阅读说明：本技术 一种具有安全的简易提手的包装袋 (Packaging bag with safe simple handle ) 是由 柴文龙 柴睿明 于 2020-12-31 设计创作，主要内容包括：一种具有安全的简易提手的包装袋,包括袋体上部设置的切口,其特征是：切口的数量有一个至多个；每个切口是曲线形状,或者是曲线与直线段组合的形状,或者是曲线与曲线组合的形状,或者是直线段与直线段组合的形状；每个切口的左侧高点与右侧高点的连线是简易提手的一根基准线,每个切口上的所有的点与该切口所对应的基准线的距离大于或者等于零；每个切口与该切口所对应的基准线围成的区域是舌形区域。舌形区域的根部以上区域是包装袋的简易提手。使用时使用者的手与舌形区域的根部接触,以很小的压力便迫使简易提手和舌形区域产生变形,从而使它们与使用者的手的接触面积大幅度增加,避免简易提手与使用者的手的接触面积太小而对手造成伤疼。(The utility model provides a wrapping bag with safe simple and easy handle, includes the incision that bag body upper portion set up, characterized by: the number of the cuts is one to more; each incision is in a curved shape, or a shape of a combination of a curved line and a straight line section, or a shape of a combination of a curved line and a curved line, or a shape of a combination of a straight line section and a straight line section; the connecting line of the left high point and the right high point of each notch is a datum line of the simple handle, and the distance between all points on each notch and the datum line corresponding to the notch is greater than or equal to zero; the area enclosed by each notch and the reference line corresponding to the notch is a tongue-shaped area. The area above the root of the tongue-shaped area is a simple handle of the packaging bag. When the simple lifting handle is used, the hand of a user is in contact with the root part of the tongue-shaped area, the simple lifting handle and the tongue-shaped area are forced to deform with small pressure, so that the contact area of the simple lifting handle and the hand of the user is greatly increased, and the hand is prevented from being hurt due to the small contact area of the simple lifting handle and the hand of the user.)

1. The utility model provides a wrapping bag with safe simple and easy handle, includes the incision that bag body upper portion set up, characterized by: the number of the incisions is one to more; each cut is a curved shape, or each cut is a shape of a combination of a curved line and a straight line section, or each cut is a shape of a combination of a curved line and a curved line, or each cut is a shape of a combination of a straight line section and a straight line section; the connecting line of the left high point and the right high point of each notch is a datum line of the simple handle, and the distance between all points on each notch and the datum line corresponding to the notch is greater than or equal to zero; the area defined by each notch and the reference line corresponding to the notch is a tongue-shaped area.

2. The package having a safe easy handle as set forth in claim 1, wherein: at least one notch in the plurality of notches comprises a left small notch from top to bottom, a left lower curve-shaped small notch, a left to right small notch, a right lower curve-shaped small notch and a right small notch from top to bottom; the upper end point of the left lower curve-shaped small notch coincides with the lower end point of the left small notch from top to bottom, and the right end point of the left lower curve-shaped small notch coincides with the left end point of the left small notch from left to right; the upper end point of the right lower curve-shaped small cut coincides with the lower end point of the right small cut from top to bottom, and the left end point of the right lower curve-shaped small cut coincides with the right end point of the left to right small cut.

3. The package having a safe easy handle as set forth in claim 1, wherein: at least one cut in the one to multiple cuts comprises a left small cut from top to bottom, a left small cut from left to right and a right small cut from top to bottom; the lower end point of the left small cut from top to bottom coincides with the left end point of the small cut from left to right, and the right end point of the small cut from left to right coincides with the lower end point of the right small cut from top to bottom.

4. The package having a safe easy handle as set forth in claim 2, wherein: the small incision on the left side from top to bottom and the small incision on the right side from top to bottom are both straight-line segment shapes in the vertical direction, the small incision on the curved shape below the left side and the small incision on the curved shape below the right side are both arc line shapes, and the small incision from left to right is a straight-line segment shape in the horizontal direction.

5. The package having a safe easy handle as set forth in claim 4, wherein: the connecting line of the upper end point of the left small cut from top to bottom and the upper end point of the right small cut from top to bottom is in the horizontal direction; the left small cut from top to bottom is tangent with the curved small cut below the left side, and the tangent point is the coincident end point of the left small cut and the curved small cut; the left lower curved small cut is tangent to the left to right small cut, and the tangent point is the coincident end point of the left lower curved small cut and the left lower curved small cut; the small cut from left to right is tangent to the curved small cut below the right side, and the tangent point is the coincident end point of the small cut and the curved small cut; the right lower curved small incision is tangent to the small incision from top to bottom, and the tangent point is the coincident end point of the two.

6. The package having a secure carrying handle as claimed in claim 3, wherein: the small incisions from top to bottom on the left side and the small incisions from top to bottom on the right side are both in the shape of straight line segments in the vertical direction, and the small incisions from left to right are in the shape of straight line segments or elliptic arc lines.

7. The package having a secure carrying handle as claimed in claim 6, wherein: the connecting line of the upper end point of the left small cut from top to bottom and the upper end point of the right small cut from top to bottom is in the horizontal direction, and the small cut from left to right is half of the cut in the shape of an ellipse; the lower end point of the left small cut from top to bottom coincides with the left end image limit point of the small cut from left to right, and the lower end point of the right small cut from top to bottom coincides with the right end image limit point of the small cut from left to right.

8. A package having a safe and easy handle as defined in claim 1, 2, 3, 4, 5, 6 or 7, wherein: arranging a left upper circular arc small notch, wherein the left upper circular arc small notch is tangent with the left small notch from top to bottom, and the tangent point is one end point of the left upper circular arc small notch and the upper end point of the left small notch from top to bottom; and arranging a right upper circular arc small notch, wherein the right upper circular arc small notch is tangent with the right small notch from top to bottom, and the tangent point is one end point of the right upper circular arc small notch and the upper end point of the right small notch from top to bottom.

9. A package having a safe and easy handle as defined in claim 1, 2, 3, 4, 5, 6 or 7, wherein: arranging a left upper calabash-shaped small notch, wherein the left upper calabash-shaped small notch consists of a large circular arc-shaped small notch, a left small circular arc-shaped small notch and a right small circular arc-shaped small notch; the left small circular arc-shaped notch is tangent to the left side of the large circular arc-shaped notch, and the tangent points are the upper endpoint of the left small circular arc-shaped notch and the left endpoint of the large circular arc-shaped notch; the left small circular arc-shaped notch is tangent with the left small notch from top to bottom, and the tangent points are the lower end point of the left small circular arc-shaped notch and the upper end point of the left small notch from top to bottom; the right small circular arc-shaped notch is tangent to the right side of the large circular arc-shaped notch, and the tangent points are the upper end point of the right small circular arc-shaped notch and the right end point of the large circular arc-shaped notch; the right small circular arc-shaped notch is tangent with the left small notch from top to bottom, and the tangent points are the lower end point of the right small circular arc-shaped notch and the upper end point of the left small notch from top to bottom;

arranging a right upper calabash-shaped small notch, wherein the right upper calabash-shaped small notch consists of a large circular arc-shaped small notch, a left small circular arc-shaped small notch and a right small circular arc-shaped small notch; the left small circular arc-shaped notch is tangent to the left side of the large circular arc-shaped notch, and the tangent points are the upper endpoint of the left small circular arc-shaped notch and the left endpoint of the large circular arc-shaped notch; the left small circular arc-shaped notch is tangent with the right small notch from top to bottom, and the tangent points are the lower end point of the left small circular arc-shaped notch and the upper end point of the right small notch from top to bottom; the right small circular arc-shaped notch is tangent to the right side of the large circular arc-shaped notch, and the tangent points are the upper end point of the right small circular arc-shaped notch and the right end point of the large circular arc-shaped notch; the small incision of the right small circular arc is tangent to the small incision on the right side from top to bottom, and the tangent point is the lower endpoint of the small incision of the right small circular arc and the upper endpoint of the small incision on the right side from top to bottom.

10. The package having a secure carrying handle as claimed in claim 8, wherein: the left upper circular arc-shaped small notch is tangent with the left small notch from top to bottom, and the tangent points are the right endpoint of the left upper circular arc-shaped small notch and the upper endpoint of the left small notch from top to bottom; the right upper circular arc small notch is tangent with the right small notch from top to bottom, and the tangent points are the left end point of the right upper circular arc small notch and the upper end point of the right small notch from top to bottom; the left upper circular arc-shaped small notch and the right upper circular arc-shaped small notch are respectively half of the circular notch; setting a left short incision and a right short incision which are small incisions in the shape of straight lines in the vertical direction; the left short notch is tangent with the upper left circular arc small notch, and the tangent points are the upper end point of the left short notch and the left end point of the left short notch; the right side short cut is tangent to the right upper circular arc small cut, and the tangent point is the upper endpoint of the right side short cut and the right endpoint of the right side short cut.

Technical Field

The invention relates to a packaging bag, in particular to the direction and shape of a cut on the packaging bag.

Background

The existing small and medium-sized packaging bags are mainly used for packaging cooked food, food raw materials, traditional Chinese medicinal materials and partial stationery, and the weight of each bag is generally hundreds of grams to thousands of grams; the small-sized packaging bag is mainly made of plastic or paper or cloth. In order to facilitate carrying and reduce the production cost of purchasers, a plurality of food producers or packaging bag producers process a notch on the upper part of each packaging bag, the area above the notch on each packaging bag is a simple handle of the packaging bag, and a user can put the hand into the notch and place fingers below the handle to conveniently carry the packaging bag. However, since the plastic or paper packing bag is thin and hard, the contact area of the handle with the user's hand is very small when the user carries the packing bag, the user's hand has a great feeling of prickling and the user's hand is easily pricked. The simple handle of the package is therefore not secure.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defect that the simple handle of the existing packaging bag is not safe, and provides a packaging bag with a safe simple handle. The technical scheme adopted by the invention is as follows:

1. the utility model provides a wrapping bag with safe simple and easy handle, includes the incision that bag body upper portion set up, characterized by: the number of the incisions is one to more; each cut is a curved shape, or each cut is a shape of a combination of a curved line and a straight line section, or each cut is a shape of a combination of a curved line and a curved line, or each cut is a shape of a combination of a straight line section and a straight line section; the connecting line of the left high point and the right high point of each notch is a datum line of the simple handle, and the distance between all points on each notch and the datum line corresponding to the notch is greater than or equal to zero; the area defined by each notch and the reference line corresponding to the notch is a tongue-shaped area.

Description 1: when the technical scheme is described in the application, the packaging bag is supposed to be in a vertical state; and assuming that the center line of the packing bag is in a vertical direction. Description 2: explanation of the "incision" in the claims: the bag body is locally broken by cutting, slicing and the like, and the contour line of the broken part is a cut. If the bag body has multiple layers, the cut can locally break the multiple layers of the bag body, or can locally break only one layer of the bag body. If the cut is not closed, no solid material is removed from the pouch. If the cut is closed, for example, the cut is in a circular shape, and the multiple layers of materials do not interfere with each other, a solid material is removed from the bag body, a circular sheet is removed, and a circular hole appears on the bag body, and the circular hole can be called a cut hole; if the bag body is provided with a plurality of layers of materials and only one layer of material is removed, the notch hole is a blind hole; the cut-out hole is a through hole if the multi-layer material of the pouch body is completely removed. The "secondary incision" appearing below is also an incision in nature, and the principle of its formation is the same as above. The primary function of the slits, however, is to form a tongue-shaped region with the root at the upper free end below, and the secondary function of the slits is to form a relatively large tongue-shaped region with the slits, which is crimped or bent to form the slit holes. If the material has more than two layers, the incision shape according to the technical scheme of the application is only used, the number of layers of the incision is less than the total number of layers, and the simple handle can still be formed, so that the protection scope of the application is still maintained. Description 3: when two incisions are provided, the tongue-shaped area is also provided with two incisions, and the two incisions can be connected or disconnected; when the number of the cuts is three, the tongue-shaped areas are also three, and the three cuts can be all connected, can be all unconnected and can be only two connected; and so on. In order to prevent the incision from contacting the user's hand and irritating the user's hand, the incision is preferably long and has only one incision. Description 4: the material in the package is generally a dosing material and requires sealing, so that the seal of the package is not affected after the cut is made in the package.

The following provides additional technical features to solution 1:

1.1, at least one cut in the cuts comprises a left small cut from top to bottom, a left lower curve-shaped small cut, a left to right small cut, a right lower curve-shaped small cut and a right small cut from top to bottom; the upper end point of the left lower curve-shaped small notch coincides with the lower end point of the left small notch from top to bottom, and the right end point of the left lower curve-shaped small notch coincides with the left end point of the left small notch from left to right; the upper end point of the right lower curve-shaped small cut coincides with the lower end point of the right small cut from top to bottom, and the left end point of the right lower curve-shaped small cut coincides with the right end point of the left to right small cut.

Description 5: the left small incision from top to bottom and the right small incision from top to bottom respectively comprise a straight line segment shape and a curve shape, and the straight line segment shape comprises a straight line segment shape in the vertical direction and a straight line segment shape in the non-vertical direction; the small incision from left to right comprises a straight line segment shape and a curve shape, and the straight line segment shape comprises a straight line segment shape in the horizontal direction and a straight line segment shape in the non-horizontal direction. The same applies below.

1.2, at least one cut in the cuts comprises a left small cut from top to bottom, a left small cut from left to right and a right small cut from top to bottom; the lower end point of the left small cut from top to bottom coincides with the left end point of the small cut from left to right, and the right end point of the small cut from left to right coincides with the lower end point of the right small cut from top to bottom.

An additional technical feature is proposed for technical solution 1.1:

1.1.1 from last little incision in left side down and from last little incision in right side down all are the straightway shape of vertical direction, the little incision of left side below curvilinear form and the little incision of right side below curvilinear form all are the circular arc shape, the little incision from left to right is the straightway shape of horizontal direction.

An additional technical feature is proposed for the technical solution 1.1.1:

1.1.1.1, wherein the connecting line of the upper end point of the left small cut from top to bottom and the upper end point of the right small cut from top to bottom is in the horizontal direction; the left small cut from top to bottom is tangent with the curved small cut below the left side, and the tangent point is the coincident end point of the left small cut and the curved small cut; the left lower curved small cut is tangent to the left to right small cut, and the tangent point is the coincident end point of the left lower curved small cut and the left lower curved small cut; the small cut from left to right is tangent to the curved small cut below the right side, and the tangent point is the coincident end point of the small cut and the curved small cut; the right lower curved small incision is tangent to the small incision from top to bottom, and the tangent point is the coincident end point of the two.

An additional technical feature is proposed for technical solution 1.2:

1.2.1, the left small incision from top to bottom and the right small incision from top to bottom are both in the shape of a straight line segment in the vertical direction, and the left small incision to the right is in the shape of a straight line segment or an elliptic arc.

An additional technical feature is proposed for the technical solution 1.2.1:

1.2.1.1, wherein the connecting line of the upper end point of the left small cut from top to bottom and the upper end point of the right small cut from top to bottom is in the horizontal direction, and the small cut from left to right is half of the cut in the shape of an ellipse; the lower end point of the left small cut from top to bottom coincides with the left end image limit point of the small cut from left to right, and the lower end point of the right small cut from top to bottom coincides with the right end image limit point of the small cut from left to right.

The technical scheme provides additional technical characteristics:

A. arranging a left upper circular arc small notch, wherein the left upper circular arc small notch is tangent with the left small notch from top to bottom, and the tangent point is one end point of the left upper circular arc small notch and the upper end point of the left small notch from top to bottom; and arranging a right upper circular arc small notch, wherein the right upper circular arc small notch is tangent with the right small notch from top to bottom, and the tangent point is one end point of the right upper circular arc small notch and the upper end point of the right small notch from top to bottom.

B. Arranging a small left upper circular notch, wherein the lowest point of the small left upper circular notch is overlapped with the upper end point of the small left upper notch from top to bottom; and arranging a right upper round small incision, wherein the lowest point of the right upper round small incision is superposed with the upper end point of the right upper round small incision from top to bottom.

C. Arranging a left upper calabash-shaped small notch, wherein the left upper calabash-shaped small notch consists of a large circular arc-shaped small notch, a left small circular arc-shaped small notch and a right small circular arc-shaped small notch; the left small circular arc-shaped notch is tangent to the left side of the large circular arc-shaped notch, and the tangent points are the upper endpoint of the left small circular arc-shaped notch and the left endpoint of the large circular arc-shaped notch; the left small circular arc-shaped notch is tangent with the left small notch from top to bottom, and the tangent points are the lower end point of the left small circular arc-shaped notch and the upper end point of the left small notch from top to bottom; the right small circular arc-shaped notch is tangent to the right side of the large circular arc-shaped notch, and the tangent points are the upper end point of the right small circular arc-shaped notch and the right end point of the large circular arc-shaped notch; the right small circular arc-shaped notch is tangent with the left small notch from top to bottom, and the tangent points are the lower end point of the right small circular arc-shaped notch and the upper end point of the left small notch from top to bottom;

arranging a right upper calabash-shaped small notch, wherein the right upper calabash-shaped small notch consists of a large circular arc-shaped small notch, a left small circular arc-shaped small notch and a right small circular arc-shaped small notch; the left small circular arc-shaped notch is tangent to the left side of the large circular arc-shaped notch, and the tangent points are the upper endpoint of the left small circular arc-shaped notch and the left endpoint of the large circular arc-shaped notch; the left small circular arc-shaped notch is tangent with the right small notch from top to bottom, and the tangent points are the lower end point of the left small circular arc-shaped notch and the upper end point of the right small notch from top to bottom; the right small circular arc-shaped notch is tangent to the right side of the large circular arc-shaped notch, and the tangent points are the upper end point of the right small circular arc-shaped notch and the right end point of the large circular arc-shaped notch; the small incision of the right small circular arc is tangent to the small incision on the right side from top to bottom, and the tangent point is the lower endpoint of the small incision of the right small circular arc and the upper endpoint of the small incision on the right side from top to bottom.

The technical scheme A is provided with the following additional technical characteristics:

D. the left upper circular arc-shaped small notch is tangent with the left small notch from top to bottom, and the tangent points are the right endpoint of the left upper circular arc-shaped small notch and the upper endpoint of the left small notch from top to bottom; the right upper circular arc small notch is tangent with the right small notch from top to bottom, and the tangent points are the left end point of the right upper circular arc small notch and the upper end point of the right small notch from top to bottom; the left upper circular arc-shaped small notch and the right upper circular arc-shaped small notch are respectively half of the circular notch.

An additional technical feature is proposed for technical solution D:

E. setting a left short incision and a right short incision which are small incisions in the shape of straight lines in the vertical direction; the left short notch is tangent with the upper left circular arc small notch, and the tangent points are the upper end point of the left short notch and the left end point of the left short notch; the right side short cut is tangent to the right upper circular arc small cut, and the tangent point is the upper endpoint of the right side short cut and the right endpoint of the right side short cut.

Description 6: the purpose of arranging the small arc-shaped notch at the upper left and the small arc-shaped notch at the upper right is to prevent stress concentration when the packaging bag is lifted. If stress concentration is caused, the packaging bag is heavy, the strength of materials for producing the packaging bag is not high, and the simple handle of the packaging bag is easy to damage when the packaging bag is lifted. And the stress concentration can be better avoided by arranging the left short incision in the straight line segment shape in the vertical direction and the right short incision in the straight line segment shape in the vertical direction.

The technical scheme 1 is provided with the following additional technical characteristics:

1.3, arranging a secondary cut below at least one of the cuts, wherein the cut and the secondary cut enclose a closed area, and the area is a cut hole.

Description 7: and the cut and the secondary cut are enclosed to form a closed area, and the bag body material in the area is cut off to form a cut hole.

The technical scheme provides additional technical characteristics:

F. the tongue-shaped area is provided with a crease.

The technical scheme provides additional technical characteristics:

G. and processing a crease on the reference line.

Description 8: the small upper left circular-arc-shaped notch and the small upper right circular-arc-shaped notch can be replaced by small elliptic-arc-shaped notches or other smooth curve segments, as long as stress concentration can be reduced. The technical requirements and terms of the horizontal direction, the vertical direction, the tangency, the circular arc, the straight line segment and the like all refer to an ideal state, and reasonable errors exist in practical use. For example, the technical scheme describes that the direction is horizontal or vertical, but the direction cannot be reached or is not required to be reached, and only the direction is close to the horizontal direction or the vertical direction. Also, the straight line section-shaped notch and the circular arc-shaped notch described in the present application have errors in actual processing.

Advantageous effects

The upper part of the bag body of the packaging bag is provided with a notch, the notch forms a tongue-shaped area with the root part below the upper free end, and after the tongue-shaped area is bent near the root part, the area above the root part of the tongue-shaped area is the simple handle of the packaging bag. When in use, the hand of a user is contacted with the root part of the tongue-shaped area, and the simple handle and the tongue-shaped area are forced to deform with smaller force, so that the contact area between the simple handle and the hand is rapidly and greatly increased and is hundreds of times larger than that between the existing simple handle and the hand; the user's hands do not feel any sharp pain because the force forcing them to deform is relatively small and the area of contact they have with the user's hands is also relatively large when deformation begins. Since the simple handle of the packing bag does not cause pain to the hand of the user, the simple handle is safe and the user can carry the packing bag comfortably.

Drawings

FIG. 1 is a front view of a first configuration of a package having a secure, simple handle;

FIG. 2 is a front view of a second configuration of a package having a secure, simple handle;

FIG. 3 is a front view of a third configuration of a package having a secure, easy-handle;

FIG. 4 is a front view of a fourth configuration of a package having a secure, easy-handle;

FIG. 5 is a front view of a fifth feature of a package having a secure, easy-handle;

FIG. 6 is a front view of a sixth configuration of a package having a secure, easy-handle;

FIG. 7 is a front view of a seventh construction of a package having a secure easy handle;

FIG. 8 is a front view of an eighth construction of a package having a secure, easy-handle;

FIG. 9 is a front view of a ninth feature of a package having a secure, simple handle;

FIG. 10 is a front view of a tenth construction of a package having a secure easy handle;

FIG. 11 is a front view of an eleventh feature of a package having a secure, easy-handle;

FIG. 12 is a front view of a twelfth feature of a package having a secure, easy-handle;

FIG. 13 is an enlarged left side view of the simple handle of the construction of FIG. 6 in use;

FIG. 14 is an enlarged left side view of the simple handle of the configuration shown in FIG. 12 in a use configuration;

FIG. 15 is a front view of a thirteenth configuration of a package having a secure, easy-handle;

FIG. 16 is a front view of a fourteenth configuration of a package having a secure, easy-handle;

FIG. 17 is a front view of a fifteenth feature of a package having a secure, easy-handle;

FIG. 18 is a front view of a sixteenth construction of a package having a secure, easy-handle;

FIG. 19 is a front view of a seventeenth construction of a package having a secure, easy handle;

FIG. 20 is a front view of an eighteenth feature of a package having a secure, simple handle;

FIG. 21 is a front view of a nineteenth feature of a package having a secure, easy-handle;

fig. 22 is a front view of a twentieth configuration of a package having a secure, simple handle.

The labels in the figure are: 1. a bag body; 01. a small arc-shaped notch with arc degree of pi; 02. a small incision in the shape of a straight line segment; 03. a small arc-shaped notch with the arc degree of 0.5 pi; 04. a circular small cut; 05. cutting a hole; 06. a small arc-shaped cut with the radian number larger than 1.5 pi but smaller than 2 pi; 07. A small arc-shaped cut with the radian less than 0.5 pi; 08. folding; 09. an elliptical arc-shaped small notch.

Detailed Description

The invention will be further explained with reference to fig. 1 to 22:

the incision of the structure shown in fig. 1 is located on the upper portion of the bag body, and consists of seven small incisions, namely a circular arc-shaped small incision with arc degrees pi above the left side, a left linear segment-shaped small incision in the vertical direction, a circular arc-shaped small incision with arc degrees 0.5 pi below the left side, a linear segment-shaped small incision in the horizontal direction, a circular arc-shaped small incision with arc degrees 0.5 pi below the right side, a right linear segment-shaped small incision in the vertical direction, and a circular arc-shaped small incision with arc degrees pi above the right side. The small cut in the shape of the circular arc with the upper arc degree of pi on the left side is tangent to the small cut in the shape of the straight line segment on the left side in the vertical direction, and the tangent point is the right endpoint of the small cut and the upper endpoint of the small cut. The left straight line section-shaped small incision in the vertical direction is tangent to the left arc-shaped small incision with the lower arc degree of 0.5 pi, and the tangent points are the lower endpoint of the left straight line section and the upper endpoint of the left arc-shaped small incision. The left side lower arc degree is 0.5 pi, the small cut in the shape of the arc is tangent to the small cut in the shape of the straight line segment in the horizontal direction, and the tangent point is the lower endpoint of the small cut and the left endpoint of the small cut. The small incision in the shape of a straight line segment in the horizontal direction is tangent to the small incision in the shape of a circular arc with the arc degree of 0.5 pi below the right side, and the tangent points are the right endpoint of the small incision and the lower endpoint of the small incision. The small cut in the shape of a circular arc with the lower arc degree of 0.5 pi on the right side is tangent to the small cut in the shape of a straight line segment on the right side in the vertical direction, and the tangent points are the upper endpoint of the small cut and the lower endpoint of the small cut. The small incision in the shape of the straight line segment on the right side in the vertical direction is tangent to the small incision in the shape of the arc with the arc degree pi on the upper part of the right side, and the tangent point is the upper endpoint of the small incision and the left endpoint of the small incision.

The difference between the structure shown in fig. 2 and the structure shown in fig. 1 is that: setting a left short incision and a right short incision which are small incisions in the shape of straight lines in the vertical direction; the left short notch is tangent with the upper left circular arc small notch, and the tangent points are the upper end point of the left short notch and the left end point of the left short notch; the right side short cut is tangent to the right upper circular arc small cut, and the tangent point is the upper endpoint of the right side short cut and the right endpoint of the right side short cut.

The difference between the structure shown in fig. 3 and the structure shown in fig. 1 is that: the small arc-shaped notch with the arc degree phi at the upper left side and the small arc-shaped notch with the arc degree phi at the upper right side are cancelled; setting a small round incision at the upper left, wherein the lowest point of the small round incision at the upper left is superposed with the upper end point of the small incision in the shape of a straight line segment at the left in the vertical direction; and arranging a right upper round small incision, wherein the lowest point of the right upper round small incision is superposed with the upper end point of the right straight line segment shaped small incision in the vertical direction.

The difference between the structure shown in fig. 4 and the structure shown in fig. 1 is that:

the small arc-shaped notch with the arc degree phi at the upper left side and the small arc-shaped notch with the arc degree phi at the upper right side are cancelled;

arranging a left upper calabash-shaped small notch, wherein the left upper calabash-shaped small notch consists of a large circular arc-shaped small notch, a left small circular arc-shaped small notch and a right small circular arc-shaped small notch; the left small circular arc-shaped notch is tangent to the left side of the large circular arc-shaped notch, and the tangent points are the upper endpoint of the left small circular arc-shaped notch and the left endpoint of the large circular arc-shaped notch; the left small circular arc-shaped notch is tangent with the left small notch from top to bottom, and the tangent points are the lower end point of the left small circular arc-shaped notch and the upper end point of the left small notch from top to bottom; the right small circular arc-shaped notch is tangent to the right side of the large circular arc-shaped notch, and the tangent points are the upper end point of the right small circular arc-shaped notch and the right end point of the large circular arc-shaped notch; the right small circular arc-shaped notch is tangent with the left small notch from top to bottom, and the tangent points are the lower end point of the right small circular arc-shaped notch and the upper end point of the left small notch from top to bottom;

arranging a right upper calabash-shaped small notch, wherein the right upper calabash-shaped small notch consists of a large circular arc-shaped small notch, a left small circular arc-shaped small notch and a right small circular arc-shaped small notch; the left small circular arc-shaped notch is tangent to the left side of the large circular arc-shaped notch, and the tangent points are the upper endpoint of the left small circular arc-shaped notch and the left endpoint of the large circular arc-shaped notch; the left small circular arc-shaped notch is tangent with the right small notch from top to bottom, and the tangent points are the lower end point of the left small circular arc-shaped notch and the upper end point of the right small notch from top to bottom; the right small circular arc-shaped notch is tangent to the right side of the large circular arc-shaped notch, and the tangent points are the upper end point of the right small circular arc-shaped notch and the right end point of the large circular arc-shaped notch; the small incision of the right small circular arc is tangent to the small incision on the right side from top to bottom, and the tangent point is the lower endpoint of the small incision of the right small circular arc and the upper endpoint of the small incision on the right side from top to bottom.

The large arc-shaped small cut is an arc-shaped small cut with the radian number larger than 1.5 pi but smaller than 2 pi; the left small circular arc-shaped small notch and the right small circular arc-shaped small notch are respectively arc-shaped small notches with radian numbers smaller than 0.5 pi.

The difference between the structure shown in fig. 5 and the structure shown in fig. 1 is that: canceling a small arc-shaped notch with the arc degree phi at the upper left side, a small arc-shaped notch with the arc degree phi at the lower left side of 0.5 pi, a small arc-shaped notch with the arc degree phi at the lower right side of 0.5 pi and a small arc-shaped notch with the arc degree phi at the upper right side of pi; the lower end point of the small incision in the shape of the straight line segment on the left side in the vertical direction is coincided with the left end point of the small incision in the shape of the straight line segment in the horizontal direction, and the right end point of the small incision in the shape of the straight line segment in the horizontal direction is coincided with the lower end point of the small incision in the shape of the straight line segment on the right side in the vertical.

The difference between the structure shown in fig. 6 and the structure shown in fig. 1 is that: and the small arc-shaped notch with the arc degree phi at the upper part of the left side and the small arc-shaped notch with the arc degree phi at the upper part of the right side are cancelled.

The difference between the structure shown in fig. 7 and the structure shown in fig. 6 is that: adding a small incision in the shape of a straight line segment at the upper left in the horizontal direction, wherein the right end point of the small incision in the shape of the straight line segment at the upper left in the horizontal direction is superposed with the upper end point of the small incision in the shape of the straight line segment at the left in the vertical direction; and adding a straight-line section-shaped small incision in the upper right horizontal direction, wherein the left end point of the straight-line section-shaped small incision in the upper right horizontal direction is superposed with the upper end point of the straight-line section-shaped small incision on the right side in the vertical direction.

The difference between the structure shown in fig. 8 and the structure shown in fig. 7 is that: a circular arc-shaped small cut with the arc degree of 0.5 pi is added between the linear section-shaped small cut at the upper left in the horizontal direction and the left linear section-shaped small cut at the left in the vertical direction; the arc-shaped small cut with the arc degree of 0.5 pi is tangent to the straight-line segment-shaped small cut in the horizontal direction at the upper left, and the tangent points are the left end point of the arc-shaped small cut and the right end point of the arc-shaped small cut; the arc-shaped small cut with the arc degree of 0.5 pi is tangent to the left straight-line segment-shaped small cut in the vertical direction, and the tangent points are the lower endpoint of the arc-shaped small cut and the upper endpoint of the arc-shaped small cut; a circular arc-shaped small cut with the arc degree of 0.5 pi is added between the straight-line-section-shaped small cut at the upper right in the horizontal direction and the right-side straight-line-section-shaped small cut in the vertical direction; the arc-shaped small cut with the arc degree of 0.5 pi is tangent to the straight-line segment-shaped small cut in the upper right horizontal direction, and the tangent points are the right end point of the arc-shaped small cut and the left end point of the arc-shaped small cut; the small circular-arc-shaped cut with the arc degree of 0.5 pi is tangent to the small straight-line segment-shaped cut on the right side in the vertical direction, and the tangent points are the lower endpoint of the small circular-arc-shaped cut and the upper endpoint of the small circular-arc-shaped cut.

The difference between the structure shown in fig. 9 and the structure shown in fig. 8 is that: a small arc-shaped notch with the arc degree of 0.5 pi is added at the upper left; the arc-shaped small cut with the arc degree of 0.5 pi is tangent to the straight-line segment-shaped small cut in the horizontal direction at the upper left, and the tangent points are the right end point of the arc-shaped small cut and the left end point of the arc-shaped small cut; the position of the other end point of the arc-shaped small cut with the arc degree of 0.5 pi is lower than that of the right end point of the small cut; a small arc-shaped notch with the arc degree of 0.5 pi is added at the upper right; the arc-shaped small cut with the arc degree of 0.5 pi is tangent to the straight-line segment-shaped small cut in the upper right horizontal direction, and the tangent points are the left end point of the arc-shaped small cut and the right end point of the arc-shaped small cut; the other end point of the arc-shaped small cut with the arc degree of 0.5 pi is lower than the left end point of the small cut.

The difference between the structure shown in fig. 10 and the structure shown in fig. 9 is that: setting a left short incision and a right short incision which are small incisions in the shape of straight lines in the vertical direction; the left short incision is tangent with the arc-shaped small incision with the radian of 0.5 pi at the tail end of the left side, and the tangent points are the upper endpoint of the left short incision and the lower endpoint of the left short incision; the right short incision is tangent with the small arc-shaped incision with the radian of 0.5 pi at the tail end of the right side, and the tangent point is the upper endpoint of the right short incision and the lower endpoint of the right short incision.

The difference between the structure shown in fig. 11 and the structure shown in fig. 1 is that: a crease is arranged on the datum line, when in use, the tongue-shaped area is bent upwards by taking the crease as an axis, and the hand is positioned below the tongue-shaped area to support the part above the tongue-shaped area. The method for processing the crease comprises the following steps: the tongue-shaped area is rotated by 180 degrees by taking the datum line as an axis and pressed on the upper part of the bag body, a certain pressure is applied to the datum line, so that a mark which cannot be eliminated is formed at the datum line, and the tongue-shaped area cannot be restored to the original position after the external force disappears. The creases described below are explained with reference to this and so on. It is of little interest to machine the crease only at the reference line.

The difference between the structure shown in fig. 12 and the structure shown in fig. 2 is that: set up first crease in the line department of the left side high point of incision and right side high point, set up the crease of second horizontal direction on tongue shape region, the distance of the regional bottom contour line of second crease and tongue shape is A, and the distance of the second crease and first crease is 0.5A. When a user carries the packaging bag, the tongue-shaped area rotates upwards by 90 degrees by taking the crease on the datum line as an axis, the tongue-shaped area rotates downwards by 180 degrees by taking the second crease as an axis, and then the tongue-shaped area is supported by the hand, so that the contact area between the tongue-shaped area and the hand is greatly increased.

Fig. 13 is an enlarged left side view of the simple handle of the structure of fig. 6 in a use position, wherein the tongue region and the simple handle are held by the user's hand and deformed by the weight of the contents of the bag, thereby rapidly and substantially increasing the contact area between the tongue region and the simple handle and the user's hand, and the pressure applied to the user's hand is very low. The upper portion of the bag, where the cut is made, is generally made of two layers of material, and the two layers are either integrally formed, for example by gluing, or by hot-pressing a plastic sheet, so that only one layer of material is shown. The same applies below.

FIG. 14 is an enlarged left side view of the simple handle of the configuration shown in FIG. 12 in a use configuration; because of the two folds, the tongue region folds into contact with the user's hand, which is thus subjected to less pressure than in the previous figure. The processing crease increases the cost, does not process the crease and also can satisfy the needs of safe handling.

The difference between the structure shown in fig. 15 and the structure shown in fig. 5 is that: the small incision with the shape of a straight line segment is replaced by a small incision with the shape of an elliptical arc. The oval arc-shaped small incision in the figure is a half of an oval-shaped small incision; the left side of the elliptic arc-shaped small incision is tangent to the vertical left side straight line segment-shaped small incision, and the tangent point is the left side quadrant point of the elliptic arc-shaped small incision and the upper endpoint of the vertical left side straight line segment-shaped small incision; the right side of the elliptical arc-shaped small incision is tangent to the vertical right side straight line segment-shaped small incision, and the tangent point is the right side quadrant point of the elliptical arc-shaped small incision and the upper endpoint of the vertical right side straight line segment-shaped small incision.

The difference between the structure shown in fig. 16 and the structure shown in fig. 15 is that: adding a small incision in the shape of a straight line segment at the upper left in the horizontal direction, wherein the right end point of the small incision in the shape of the straight line segment at the upper left in the horizontal direction is superposed with the upper end point of the small incision in the shape of the straight line segment at the left in the vertical direction; and adding a straight-line section-shaped small incision in the upper right horizontal direction, wherein the left end point of the straight-line section-shaped small incision in the upper right horizontal direction is superposed with the upper end point of the straight-line section-shaped small incision on the right side in the vertical direction.

The difference between the structure shown in fig. 17 and the structure shown in fig. 16 is that: a circular arc-shaped small cut with the arc degree of 0.5 pi is added between the linear section-shaped small cut at the upper left in the horizontal direction and the left linear section-shaped small cut at the left in the vertical direction; the arc-shaped small cut with the arc degree of 0.5 pi is tangent to the straight-line segment-shaped small cut in the horizontal direction at the upper left, and the tangent points are the left end point of the arc-shaped small cut and the right end point of the arc-shaped small cut; the arc-shaped small cut with the arc degree of 0.5 pi is tangent to the left straight-line segment-shaped small cut in the vertical direction, and the tangent points are the lower endpoint of the arc-shaped small cut and the upper endpoint of the arc-shaped small cut; a circular arc-shaped small cut with the arc degree of 0.5 pi is added between the straight-line-section-shaped small cut at the upper right in the horizontal direction and the right-side straight-line-section-shaped small cut in the vertical direction; the arc-shaped small cut with the arc degree of 0.5 pi is tangent to the straight-line segment-shaped small cut in the upper right horizontal direction, and the tangent points are the right end point of the arc-shaped small cut and the left end point of the arc-shaped small cut; the small circular-arc-shaped cut with the arc degree of 0.5 pi is tangent to the small straight-line segment-shaped cut on the right side in the vertical direction, and the tangent points are the lower endpoint of the small circular-arc-shaped cut and the upper endpoint of the small circular-arc-shaped cut.

The difference between the structure shown in fig. 18 and the structure shown in fig. 17 is that: a small arc-shaped notch with the arc degree of 0.5 pi is added at the upper left; the arc-shaped small cut with the arc degree of 0.5 pi is tangent to the straight-line segment-shaped small cut in the horizontal direction at the upper left, and the tangent points are the right end point of the arc-shaped small cut and the left end point of the arc-shaped small cut; the position of the other end point of the arc-shaped small cut with the arc degree of 0.5 pi is lower than that of the right end point of the small cut; a small arc-shaped notch with the arc degree of 0.5 pi is added at the upper right; the arc-shaped small cut with the arc degree of 0.5 pi is tangent to the straight-line segment-shaped small cut in the upper right horizontal direction, and the tangent points are the left end point of the arc-shaped small cut and the right end point of the arc-shaped small cut; the other end point of the arc-shaped small cut with the arc degree of 0.5 pi is lower than the left end point of the small cut.

The difference between the structure shown in fig. 19 and the structure shown in fig. 17 is that: only one tongue area is shown in fig. 17, while two are shown in fig. 19. If the sizes of the packing bags are the same, the distance from the left end of the notch to the right end of the notch in fig. 19 is a, and the distance from the left end of the notch to the right end of the notch in fig. 17 is B, the difference between the values of a and B is not large. The configuration shown in fig. 19 is more complex, but less valuable than the configuration shown in fig. 17 because the small incision, in the form of a straight line segment in the middle of the incision in fig. 19, is irritating to the user's hand.

The difference between the structure shown in fig. 20 and the structure shown in fig. 19 is that: the two incisions in fig. 20 are not connected. One notch in FIG. 19 can also be considered two connected notches; the tongue-shaped areas in fig. 19 and 20 are not shaped the same, but do not differ much, and they function very similarly.

The difference between the structure shown in fig. 21 and the structure shown in fig. 1 is that: the small cut in the shape of the arc with the arc degree phi at the upper left side is tangent with the small cut in the shape of the straight line segment at the left side in the vertical direction, and the tangent point is the left end point of the small cut and the upper end point of the small cut; the small cut in the shape of a circular arc with the upper arc degree pi on the right side is tangent to the small cut in the shape of a straight line segment on the right side in the vertical direction, and the tangent point is the right endpoint of the small cut and the upper endpoint of the small cut.

The difference between the structure shown in fig. 22 and the structure shown in fig. 1 is that: a secondary incision is added on the basis of the incision shown in figure 1, and the shape characteristics of the secondary incision are the same as those of the incision in figure 6. In fig. 22, the left straight line segment shaped small incision of the auxiliary incision in the vertical direction is tangent to the arc shaped small incision with the arc degree pi at the upper left, and the tangent point is the upper end point of the left straight line segment shaped small incision and the left end point of the left arc shaped small incision; the right straight line segment of the auxiliary incision in the vertical direction is in tangent with the small arc-shaped incision with the arc degree phi above the right, and the tangent points are the upper endpoint of the auxiliary incision and the right endpoint of the auxiliary incision. In fig. 22, the material in the closed area of the pouch is removed to form a cut hole, since the cut and the secondary cut enclose the closed area.