阅读说明：本技术 一种耐高温塑料袋及其制备方法 (High-temperature-resistant plastic bag and preparation method thereof ) 是由 张家刘 张攀 于 2020-04-24 设计创作，主要内容包括：本发明属于塑料袋生产使用技术领域,具体的说是一种耐高温塑料袋及其制备方法,包括盒体、切刀和转动杆；所述盒体的左右两侧侧面靠近盒体的上表面位置均固连有固定箱；所述固定箱的内部均设有四个第一伸缩杆；下方所述第一伸缩杆共同固连有同一个粘板；所述粘板数量为二,且左右对称设置；上方所述第一伸缩杆共同固连有同一个切板；所述切板数量为二,且左右对称设置；两个所述切板相对一侧侧面均设有切刀；所述盒体的右侧侧面转动连接有转动杆；通过本发明实现了快销食品的快速打包,减少了打包的人力和时间成本,且能够有效的减少食品在打包袋中的偏移现象,提高客户提携塑料袋的舒适感,同时可以有效的减少食品内洒问题的发生。(The invention belongs to the technical field of plastic bag production and use, and particularly relates to a high-temperature-resistant plastic bag and a preparation method thereof, wherein the high-temperature-resistant plastic bag comprises a box body, a cutter and a rotating rod; the left side surface and the right side surface of the box body are fixedly connected with a fixed box at positions close to the upper surface of the box body; four first telescopic rods are arranged inside the fixed box; the first telescopic rods below are fixedly connected with the same adhesive plate; the number of the adhesive plates is two, and the adhesive plates are arranged symmetrically left and right; the upper first telescopic rods are fixedly connected with the same cutting plate; the number of the cutting plates is two, and the cutting plates are arranged symmetrically left and right; the side surfaces of the two opposite sides of the cutting plates are provided with cutters; the right side surface of the box body is rotatably connected with a rotating rod; according to the invention, the fast packaging of fast selling food is realized, the labor and time cost for packaging is reduced, the food deviation phenomenon in the packaging bag can be effectively reduced, the comfort of a customer carrying the plastic bag is improved, and the problem of food internal spilling can be effectively reduced.)

1. A preparation method of a high-temperature-resistant plastic bag is characterized by comprising the following steps: the method comprises the following steps:

s1: taking low-density polyethylene, modified carbon fiber, polyethylene, urea-formaldehyde resin, filler, plasticizer, antioxidant, corn starch pasting modified master batch and calcium carbonate according to the mass ratio requirement, and adding the mixture into a mixer for fully stirring and mixing;

s2: slowly heating the mixture in the S1, and rapidly stirring the mixture while heating so that the mixture is completely melted into a molten liquid; then introducing carbon dioxide into the molten liquid, so that the temperature of the liquid is controlled to be 90-120 ℃;

s3: injecting the molten liquid obtained in the step S2 into a film blowing machine, extruding and molding to obtain strip-shaped plastic bags, and finally sealing and pressing edges, printing patterns and winding the formed plastic bags into rolls;

s4: when the packaging box is used, the rolled plastic bag is placed inside the packaging box, the end of the rolled plastic bag is pulled out upwards, and then a packaged object is placed inside the packaging box for rapid packaging;

the packaging box used in the S4 comprises a box body (1), a cutter (2) and a rotating rod (3); the box body (1) is designed to be a cube structure; a cavity is formed in the box body (1); a fixed plate (11) is horizontally and fixedly connected inside the box body (1); the number of the fixing plates (11) is two, and the fixing plates are arranged symmetrically left and right; an opening is formed in the left side face of the box body (1) at the position below the fixing plate (11); an opening plate (12) is connected to the inside of the opening in a vertical sliding manner; a roll-shaped plastic bag is arranged in the box body (1) below the fixing plates (11), and the end of the roll-shaped plastic bag passes through the gap between the two fixing plates (11) and extends to the position above the fixing plates (11); the left side surface and the right side surface of the box body (1) are fixedly connected with fixed boxes (13) close to the upper surface of the box body (1); four first telescopic rods (21) are arranged in the fixed box (13); the first telescopic rods (21) below are fixedly connected with the same adhesive plate (22) together; the number of the adhesive plates (22) is two, and the adhesive plates are arranged symmetrically left and right; the upper first telescopic rods (21) are fixedly connected with the same cutting plate (23) together; the number of the cutting plates (23) is two, and the cutting plates are arranged symmetrically left and right; the side surfaces of the two opposite sides of the cutting plates (23) are provided with cutters (2); the right side surface of the box body (1) is provided with a pressure switch.

2. The method for preparing a high temperature resistant plastic bag according to claim 1, wherein: the side surfaces of the opposite sides of the cutting plates (23) are provided with sliding grooves, and the insides of the sliding grooves are connected with the cutters (2) in a sliding manner; a second telescopic rod (24) is arranged between the bottom of each sliding groove and the corresponding cutter (2); the side surfaces of the two opposite sides of the two cutting plates (23) are close to the front end surface and the rear end surface of the corresponding cutting plate (23) and are fixedly connected with third telescopic rods (25), and the third telescopic cylinders are communicated with the corresponding second telescopic rods (24); and blocking pieces (26) are arranged on the inner surface of the box body (1) between the two corresponding third telescopic rods (25).

3. The method for preparing a high temperature resistant plastic bag according to claim 2, wherein: the side surfaces of the opposite sides of the cutting plates (23) are fixedly connected with elastic backing plates (27); the elastic cushion plate (27) is provided with avoidance holes at the corresponding sliding chute opening positions; the cavity is formed in the elastic base plate (27), and the cavity is communicated with the corresponding second telescopic rod (24).

4. The method for preparing a high temperature resistant plastic bag according to claim 1, wherein: the middle positions of the two fixing plates (11) are provided with the same mounting hole; the inner parts of the mounting holes are fixedly connected with bases (14) respectively, the two bases (14) are both in a semi-cylinder structural design, and a gap space is arranged between the two bases (14); the upper surfaces of the two bases (14) are provided with adjusting grooves; adjusting plates (15) are connected to the inner parts of the two adjusting grooves in a vertical sliding manner; first springs which are uniformly arranged are arranged between the adjusting plate (15) and the bottom of the corresponding adjusting groove; and a fourth telescopic rod (17) is arranged between the adjusting plate (15) and the bottom of the corresponding adjusting groove, and the fourth telescopic rod (17) is communicated with two first telescopic rods (21) below the corresponding adjusting groove.

5. The method for preparing a high temperature resistant plastic bag according to claim 4, wherein: the right side surface of the left fixing plate (11) is provided with guide through holes close to the front side surface and the rear side surface of the fixing plate (11); the inner parts of the two guide through holes are rotatably connected with rotating plates.

6. The method for preparing a high temperature resistant plastic bag according to claim 1, wherein: the pressurizing switch comprises a second spring (31), a fifth telescopic rod (32) and a rotating rod (3); the right side surface of the box body (1) is fixedly connected with a rotary column; the surface of the rotating column is rotatably connected with a rotating rod (3); a fifth telescopic rod (32) is fixedly connected to the right side surface of the box body (1) at the left upper position of the rotary column; the right side surface of the box body (1) is fixedly connected with a fixed block at a position right below the rotating column; and a second spring (31) is connected between the fixed block and the rotating rod (3).

7. A high temperature resistant plastic bag which is characterized in that: the high-temperature-resistant plastic bag comprises the following components in percentage by mass: 20-30 parts of low-density polyethylene, 10-20 parts of modified carbon fiber, 5-10 parts of polyethylene, 10-15 parts of urea-formaldehyde resin, 10-20 parts of filler, 1-5 parts of plasticizer, 5-10 parts of antioxidant, 5-10 parts of corn starch pasting modified master batch and 1-5 parts of calcium carbonate; the high-temperature resistant plastic bag is suitable for the preparation method of the high-temperature resistant plastic bag of any one of claims 1 to 6.

Technical Field

The invention belongs to the technical field of production and use of plastic bags, and particularly relates to a high-temperature-resistant plastic bag and a preparation method thereof.

Background

Plastic bags, which are made of thin and flammable plastic films, are used to contain other articles, are commonly found in supermarkets, traditional markets, department stores, warehouses, garbage dumps and the like, and are essential articles in daily life, are widely used due to the advantages of low price, extremely light weight, large capacity, convenience in storage and the like, and are prohibited from production and use in some countries due to the disadvantages of extremely long degradation period and difficult processing.

According to CN201810641419.3 a high temperature resistant plastic bag and its preparation method, in the prior art, when the high temperature resistant plastic bag is used in fast selling industry, such as breakfast shop or milk tea shop staff, to meet the demand of fast selling in a short time, the packaging plastic bag is completely unfolded in advance, then when in use, the food can be directly placed in the packaging plastic bag to achieve the effect of fast packaging.

In view of this, in order to overcome the above technical problems, the present company has designed and developed a high temperature resistant plastic bag and a method for making the same, and a special packing box is used to solve the above technical problems.

Disclosure of Invention

In order to make up the defects of the prior art, in the prior art, when the high-temperature resistant plastic bag is used in the fast selling industry, such as breakfast shops or milk tea shop staffs, the packaging plastic bag is completely unfolded in advance to meet the requirement of fast selling in a short time, then when the high-temperature resistant plastic bag is used, food can be directly placed in the packaging plastic bag to achieve the effect of fast packaging, on one hand, the plastic bag is unfolded in advance, time is consumed, the workload of staff is increased, on the other hand, the unfolded plastic bag is inconsistent in position, so that the plastic bag is lifted after packaging is finished, and the milk tea cup or breakfast soybean milk in the plastic bag is easy to incline, so that the problem of internal sprinkling is easily caused while carrying is influenced.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a preparation method of a high-temperature-resistant plastic bag, which comprises the following steps:

s1: taking low-density polyethylene, modified carbon fiber, polyethylene, urea-formaldehyde resin, filler, plasticizer, antioxidant, corn starch pasting modified master batch and calcium carbonate according to the mass ratio requirement, and adding the mixture into a mixer for fully stirring and mixing; the components are firstly fully stirred and mixed, and then when the components are melted, the problem that the quality stability of the blow-molded plastic bag is influenced due to uneven materials can be avoided.

S2: slowly heating the mixture in the S1, and rapidly stirring the mixture while heating so that the mixture is completely melted into a molten liquid; then introducing carbon dioxide into the molten liquid, so that the temperature of the liquid is controlled to be 90-120 ℃; carbon dioxide is continuously introduced into the molten liquid, the carbon dioxide can quickly take away the high temperature of the molten liquid, so that the temperature of the liquid is controlled in a reasonable range, and the carbon dioxide can not react with the molten liquid, therefore, the quality of the plastic bag can not be influenced, meanwhile, the manufacturing cost of the carbon dioxide is lower, and the plastic bag is suitable for mass production and use.

S3: injecting the molten liquid obtained in the step S2 into a film blowing machine, extruding and molding to obtain strip-shaped plastic bags, and finally sealing and pressing edges, printing patterns and winding the formed plastic bags into rolls; by winding the plastic bag into a roll, the plastic bag is convenient to package and greatly facilitates later use.

S4: when the packaging box is used, the rolled plastic bag is placed inside the packaging box, the end of the rolled plastic bag is pulled out upwards, and then a packaged object is placed inside the packaging box for rapid packaging; the roll-shaped plastic bag is placed in the packing box, so that the objects can be quickly packed by the packing box, and the requirement for quickly packing the commodities with high flow speed, such as milk tea, breakfast and the like, is facilitated.

The packaging box used in the S4 comprises a box body, a cutter and a rotating rod; the box body is designed in a cube structure; a cavity is formed in the box body; a fixed plate is horizontally and fixedly connected inside the box body; the number of the fixing plates is two, and the fixing plates are arranged symmetrically left and right; an opening is formed in the left side face of the box body at the position below the fixing plate; the interior of the opening is vertically and slidably connected with a plywood; a roll-shaped plastic bag is arranged in the box body below the fixing plates, and the end head of the roll-shaped plastic bag penetrates through the gap between the two fixing plates and extends to the position above the fixing plates; the left side surface and the right side surface of the box body are fixedly connected with a fixed box at positions close to the upper surface of the box body; four first telescopic rods are arranged inside the fixed box; the first telescopic rods below are fixedly connected with the same adhesive plate; the number of the adhesive plates is two, and the adhesive plates are arranged symmetrically left and right; the upper first telescopic rods are fixedly connected with the same cutting plate; the number of the cutting plates is two, and the cutting plates are arranged symmetrically left and right; the side surfaces of the two opposite sides of the cutting plates are provided with cutters; a pressure switch is arranged on the right side surface of the box body; in the prior art, in order to meet the requirement of fast selling in a short time, a breakfast food or a milk tea store worker completely unfolds a packaging plastic bag in advance, and then the food can be directly placed in the packaging plastic bag to achieve the effect of fast packaging when in use, on one hand, the plastic bag is unfolded in advance to be prepared, the time is consumed, the workload of workers is increased, on the other hand, the unfolded plastic bag is inconsistent in position, so that the plastic bag is lifted, and the milk tea cups or the soybean milk in the plastic bag are easy to incline, thereby the internal problem is easy to be caused when lifting and carrying breakfast is influenced, therefore, through the packaging box used by the invention, when food packaging needs to be carried out, the food can be directly put into the packaging box, and then staff can directly lift the plastic bag, because the plastic bag is in a roll-shaped connecting structure, the plastic bag can be taken up while the plastic bag with the food is lifted, when one plastic bag is completely pulled out, the pressure switch is started, the pressure switch can push out the first telescopic rod, the first telescopic rod can further drive the corresponding sticking plate or cutting plate to move towards the plastic bag, on one hand, the cutter on the surface of the cutting plate can cut off the two connected plastic bags, on the other hand, the films on the two sides of the next plastic bag can be respectively stuck to the surfaces of the corresponding sticking plates, therefore, when the sticking plate and the cutting plate are reset, the mouth part of the plastic bag can be rapidly unfolded, and the next food can be conveniently and rapidly packaged, the problem of a large amount of time consumed by personnel in the packaging process is solved, and the problem of serious deviation of food in the plastic bag is solved, so that the fast packaging of fast selling food is realized, the labor and time cost of packaging is reduced, the deviation phenomenon of food in the packaging bag can be effectively reduced, the comfort of carrying the plastic bag by a customer is improved, and the problem of food splashing in the plastic bag can be effectively solved.

Preferably, the side surfaces of the opposite sides of the cutting plates are provided with sliding grooves, and the insides of the sliding grooves are connected with the cutters in a sliding manner; second telescopic rods are arranged between the bottom of each sliding groove and the corresponding cutter; the side surfaces of the opposite sides of the two cutting plates, which are close to the front end surface and the rear end surface of the corresponding cutting plate, are fixedly connected with third telescopic rods, and the third telescopic cylinders are communicated with the corresponding second telescopic rods; the inner surface of the box body is provided with a baffle sheet between two corresponding third telescopic rods; the during operation, because the cutter is in the inboard of cutting plate, and the cutting plate is located the top position of adhesive plate, operating personnel is when carrying up the plastic bag, the hand can stretch into the inside of packing box, therefore the easy fish tail operating personnel hand of cutter, in order to reduce the emergence of fish tail problem, consequently, through setting up second telescopic link and third telescopic link, link to each other between second telescopic link and the third telescopic link, when extruding between third telescopic link and separation blade, gas in the third telescopic link can enter into in the second telescopic link, and then stretch out the spout through the ejecting drive cutter of second telescopic link, when meetting the inside of hand at packing box, the separation blade can not contacted to the third telescopic link, therefore the spout can not be stretched out to the cutter, the problem of cutter fish tail hand has been avoided.

Preferably, the side surfaces of the opposite sides of the cutting plates are fixedly connected with elastic backing plates; the elastic base plate is provided with avoidance holes at the corresponding chute opening positions; cavities are formed in the elastic base plates, and the cavities are communicated with the corresponding second telescopic rods; during operation, through setting up the elastic backing plate, when operating personnel's hand when the inside of packing box, the hand can extrude the elastic backing plate for in the gas in the elastic backing plate enters into the second telescopic link, make the second telescopic link adduction, further avoid the cutter to stretch out the emergence of spout fish tail hand problem.

Preferably, the two fixing plates are provided with the same mounting hole at the middle part; the inner parts of the mounting holes are fixedly connected with bases respectively, the two bases are both in a semi-cylindrical structural design, and a gap space is arranged between the two bases; the upper surfaces of the two bases are provided with adjusting grooves; adjusting plates are connected to the inner parts of the two adjusting grooves in a vertical sliding mode; first springs which are uniformly arranged are arranged between the adjusting plate and the bottom of the corresponding adjusting groove; fourth telescopic rods are arranged between the adjusting plates and the bottoms of the corresponding adjusting groove grooves, and the fourth telescopic rods are communicated with the two first telescopic rods below the corresponding adjusting plates; the during operation, when packing plastic bag need be mentioned to operating personnel, because the distance between two sticky boards is far away, need successively twice carry and draw packing plastic bag from two sticky board surfaces, consequently, mention the plastic bag for operating personnel from the packing box fast and brought the influence, for further mention the plastic bag fast, through setting up the base, the regulating plate, first spring and fourth telescopic link, when food is placed in the regulating plate surface, can compress first spring and fourth telescopic link, gas in the fourth telescopic link can enter into appointed first telescopic link in, and then drive relative motion between two sticky boards, realize reducing of distance between the sticky board, when the plastic bag is mentioned to the operating personnel, because the effect regulating plate of first spring resets, consequently first telescopic link, divide fast between the sticky board, avoid carrying the influence of drawing.

Preferably, the right side surface of the left fixing plate is provided with guide through holes close to the front side surface and the rear side surface of the fixing plate; the inner parts of the two guide through holes are rotatably connected with rotating plates; the during operation, after one roll of plastic bag used up, need the staff to trade new plastic bag again, consequently for the ease of changing the plastic bag for the end of new plastic bag upwards guides, consequently through the rotor plate, when the new plastic bag of staff's guide, can open the rotor plate, and then realizes the quick replacement of plastic bag.

Preferably, the pressure switch comprises a second spring, a fifth telescopic rod and a rotating rod; the right side surface of the box body is fixedly connected with a rotary column; the surface of the rotating column is rotatably connected with a rotating rod; the right side surface of the box body is fixedly connected with a fifth telescopic rod at the left upper position of the rotary column; the right side surface of the box body is fixedly connected with a fixed block at a position right below the rotary column; a second spring is connected between the fixed block and the rotating rod; during operation, because the sticky plate and the cutter all need certain effort just can glue and cut off the plastic bag, in order to reduce the burden that operating personnel pressed compression switch, through setting up the dwang, can easily pressurize the fifth telescopic link through rotating the dwang, accomplish the pressurization back, can make the dwang reset fast through the second spring, owing to adopted lever principle, consequently can very big reduction operating personnel's working strength.

The high-temperature-resistant plastic bag comprises the following components in parts by mass: 20-30 parts of low-density polyethylene, 10-20 parts of modified carbon fiber, 5-10 parts of polyethylene, 10-15 parts of urea-formaldehyde resin, 10-20 parts of filler, 1-5 parts of plasticizer, 5-10 parts of antioxidant, 5-10 parts of corn starch pasting modified master batch and 1-5 parts of calcium carbonate; the high-temperature-resistant plastic bag is suitable for the preparation method of the high-temperature-resistant plastic bag; during working, the quick degradation capability of the plastic bag can be improved by adding the corn starch pasting modified master batch, the raw material cost of a plastic product can be reduced by adding calcium carbonate, the plastic bag also has the effect of improving the performance of a plastic material, and the impact resistance of matrix plastic can be obviously improved.

The invention has the following beneficial effects:

1. according to the high-temperature-resistant plastic bag and the preparation method thereof, the packing box is used, and the box body, the cutter and the rotating rod are arranged; the rotating rod can be rotated to drive the cutter and the sticky plate in the box body to move, so that the plastic bag can be cut off and unfolded quickly.

2. According to the high-temperature-resistant plastic bag and the preparation method thereof, the packing box is provided with the separation blade, the second telescopic rod and the third telescopic rod are arranged, and the second telescopic rod and the third telescopic rod are connected with each other through the second telescopic rod and the third telescopic rod, so that when the third telescopic rod and the separation blade are extruded, gas in the third telescopic rod can enter the second telescopic rod, the second telescopic rod is ejected out to drive the cutter to extend out of the chute, when a hand is in the packing box, the third telescopic rod cannot contact the separation blade, the cutter cannot extend out of the chute, and the problem that the cutter scratches the hand is avoided.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a flow chart of a method of the present invention;

FIG. 2 is an external view of a box for packaging used in the present invention;

FIG. 3 is a perspective view of a packing box used in the present invention;

FIG. 4 is a top view of a packing box used in the present invention;

FIG. 5 is a cross-sectional view taken at A-A of FIG. 4;

FIG. 6 is a cross-sectional view taken at B-B of FIG. 4;

FIG. 7 is an enlarged view of a portion C of FIG. 5;

in the figure: the box body 1, the fixed plate 11, the opening plate 12, the fixed box 13, the base 14, the adjusting plate 15, the fourth telescopic link 16, the rotating plate 17, the cutter 2, the first telescopic link 21, the sticky plate 22, the cutting plate 23, the second telescopic link 24, the third telescopic link 25, the separation blade 26, the elastic base plate 27, the rotating rod 3, the second spring 31 and the fifth telescopic link 32.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 7, the method for manufacturing a high temperature resistant plastic bag according to the present invention comprises the steps of:

s1: taking low-density polyethylene, modified carbon fiber, polyethylene, urea-formaldehyde resin, filler, plasticizer, antioxidant, corn starch pasting modified master batch and calcium carbonate according to the mass ratio requirement, and adding the mixture into a mixer for fully stirring and mixing; the components are firstly fully stirred and mixed, and then when the components are melted, the problem that the quality stability of the blow-molded plastic bag is influenced due to uneven materials can be avoided.

S2: slowly heating the mixture in the S1, and rapidly stirring the mixture while heating so that the mixture is completely melted into a molten liquid; then introducing carbon dioxide into the molten liquid, so that the temperature of the liquid is controlled to be 90-120 ℃; carbon dioxide is continuously introduced into the molten liquid, the carbon dioxide can quickly take away the high temperature of the molten liquid, so that the temperature of the liquid is controlled in a reasonable range, and the carbon dioxide can not react with the molten liquid, therefore, the quality of the plastic bag can not be influenced, meanwhile, the manufacturing cost of the carbon dioxide is lower, and the plastic bag is suitable for mass production and use.

S3: injecting the molten liquid obtained in the step S2 into a film blowing machine, extruding and molding to obtain strip-shaped plastic bags, and finally sealing and pressing edges, printing patterns and winding the formed plastic bags into rolls; by winding the plastic bag into a roll, the plastic bag is convenient to package and greatly facilitates later use.

S4: when the packaging box is used, the rolled plastic bag is placed inside the packaging box, the end of the rolled plastic bag is pulled out upwards, and then a packaged object is placed inside the packaging box for rapid packaging; the roll-shaped plastic bag is placed in the packing box, so that the objects can be quickly packed by the packing box, and the requirement for quickly packing the commodities with high flow speed, such as milk tea, breakfast and the like, is facilitated.

The packaging box used in the S4 comprises a box body 1, a cutter 2 and a rotating rod 3; the box body 1 is designed to be a cube structure; a cavity is formed in the box body 1; a fixed plate 11 is horizontally and fixedly connected inside the box body 1; the number of the fixing plates 11 is two, and the fixing plates are arranged symmetrically left and right; an opening is formed in the left side face of the box body 1 at the position below the fixing plate 11; the interior of the opening is vertically connected with an opening-closing plate 12 in a sliding way; a roll-shaped plastic bag is arranged in the box body 1 below the fixing plates 11, and the end of the roll-shaped plastic bag passes through the gap between the two fixing plates 11 and extends to the upper position of the fixing plates 11; the left side surface and the right side surface of the box body 1 are fixedly connected with fixed boxes 13 close to the upper surface of the box body 1; four first telescopic rods 21 are arranged inside the fixed box 13; the first telescopic rods 21 below are fixedly connected with the same adhesive plate 22; the number of the adhesive plates 22 is two, and the adhesive plates are arranged symmetrically left and right; the upper first telescopic rods 21 are fixedly connected with the same cutting plate 23; the number of the cutting plates 23 is two, and the cutting plates are arranged symmetrically left and right; the side surfaces of the two opposite sides of the cutting plates 23 are provided with cutters 2; a pressure switch is arranged on the right side surface of the box body 1; in the prior art, in order to meet the requirement of fast selling in a short time, a breakfast food or a milk tea store worker completely unfolds a packaging plastic bag in advance, and then the food can be directly placed in the packaging plastic bag to achieve the effect of fast packaging when in use, on one hand, the plastic bag is unfolded in advance to be prepared, the time is consumed, the workload of workers is increased, on the other hand, the unfolded plastic bag is inconsistent in position, so that the plastic bag is lifted, and the milk tea cups or the soybean milk in the plastic bag are easy to incline, thereby the internal problem is easy to be caused when lifting and carrying breakfast is influenced, therefore, with the packaging box used in the invention, when food packaging needs to be performed, the food can be directly placed into the packaging box, and then staff can directly lift the plastic bag, because the plastic bag is in a roll-shaped connection structure, the plastic bag with the food can be lifted and simultaneously the next plastic bag can be taken, when one plastic bag is completely pulled out, the pressure switch is started, the pressure switch can push out the first telescopic rod 21, the first telescopic rod 21 can further drive the corresponding sticking plate 22 or cutting plate 23 to move towards the direction of the plastic bag, on one hand, the cutter 2 on the surface of the cutting plate 23 can cut off the two connected plastic bags, on the other hand, films on two sides of the next plastic bag can be respectively adhered to the surfaces of the corresponding sticking plates 22, so that when the sticking plates 22 and the cutting plate 23 are reset, the mouth part of the plastic bag can be rapidly unfolded, and the next food can be rapidly packaged, the problem of a large amount of time consumed by personnel in the packaging process is solved, and the problem of serious deviation of food in the plastic bag is solved, so that the fast packaging of fast selling food is realized, the labor and time cost of packaging is reduced, the deviation phenomenon of food in the packaging bag can be effectively reduced, the comfort of carrying the plastic bag by a customer is improved, and the problem of food splashing in the plastic bag can be effectively solved.

As an embodiment of the invention, the side surfaces of the opposite sides of the cutting plate 23 are both provided with sliding grooves, and the insides of the sliding grooves are both connected with the cutters 2 in a sliding manner; a second telescopic rod 24 is arranged between the bottom of each sliding groove and the corresponding cutter 2; the side surfaces of the two opposite sides of the two cutting plates 23, which are close to the front end surface and the rear end surface of the corresponding cutting plate 23, are fixedly connected with third telescopic rods 25, and the third telescopic cylinders are communicated with the corresponding second telescopic rods 24; blocking pieces 26 are arranged on the inner surface of the box body 1 between the two corresponding third telescopic rods 25; the during operation, because cutter 2 is in the inboard of cutting plate 23, and cutting plate 23 is located the top position of adhesive plate 22, operating personnel is when carrying up the plastic bag, the hand can stretch into the inside of packing box, consequently, cutter 2 fish tail operating personnel hand easily, in order to reduce the emergence of fish tail problem, consequently, through setting up second telescopic link 24 and third telescopic link 25, link to each other between second telescopic link 24 and the third telescopic link 25, when extruding between third telescopic link 25 and separation blade 26, gas in the third telescopic link 25 can enter into in the second telescopic link 24, and then stretch out the spout through 24 ejecting drive cutters of second telescopic link, when meetting the hand in the inside of packing box, third telescopic link 25 can not contact separation blade 26, consequently, cutter 2 can not stretch out the spout, cutter 2 fish tail hand problem has been avoided.

As an embodiment of the invention, the side surfaces of the opposite sides of the cutting plate 23 are fixedly connected with elastic backing plates 27; the elastic backing plate 27 is provided with avoidance holes at the corresponding chute opening positions; cavities are formed in the elastic backing plates 27 and communicated with the corresponding second telescopic rods 24; during operation, through setting up elastic backing plate 27, when operating personnel's hand is in the inside of packing box, the hand can extrude elastic backing plate 27 for gas in the elastic backing plate 27 enters into second telescopic link 24, makes the interior adduction of second telescopic link 24, further avoids cutter 2 to stretch out the emergence of spout fish tail hand problem.

As an embodiment of the present invention, the two fixing plates 11 have a same mounting hole at the middle position; the inner parts of the mounting holes are fixedly connected with bases 14 respectively, the two bases 14 are both in a semi-cylinder structural design, and a gap space is arranged between the two bases 14; the upper surfaces of the two bases 14 are both provided with adjusting grooves; adjusting plates 15 are connected to the inner parts of the two adjusting grooves in a vertical sliding mode; first springs which are uniformly arranged are arranged between the adjusting plate 15 and the bottom of the corresponding adjusting groove; a fourth telescopic rod 17 is arranged between each adjusting plate 15 and the bottom of the corresponding adjusting groove, and the fourth telescopic rods 17 are communicated with two first telescopic rods 21 below the corresponding adjusting grooves; when the plastic bag lifting device works, when an operator needs to lift the packaging plastic bag, the packaging plastic bag needs to be lifted and pulled from the surfaces of the two adhesive plates 22 twice due to the long distance between the two adhesive plates 22, therefore, the plastic bag is quickly lifted from the packing box by an operator, and in order to further quickly lift the plastic bag, by arranging the base 14, the adjusting plate 15, the first spring and the fourth telescopic rod 17, when food is placed on the surface of the adjusting plate 15, the first spring and the fourth telescopic rod 17 are compressed, the air in the fourth telescopic rod 17 enters the appointed first telescopic rod 21, thereby driving the two sticky boards 22 to move relatively to realize the reduction of the distance between the sticky boards 22, when the worker lifts the plastic bag, due to the action of the first spring, the adjusting plate 15 is reset, so that the first telescopic rod 21 and the sticky plate 22 are quickly separated, and the influence on lifting is avoided.

As an embodiment of the present invention, the right side surface of the left fixing plate 11 is provided with guiding through holes near the front and rear side surfaces of the fixing plate 11; the inner parts of the two guide through holes are rotatably connected with rotating plates; the during operation, after one roll of plastic bag used up, need the staff to trade new plastic bag again, consequently for the ease of changing the plastic bag for the end of new plastic bag upwards guides, consequently through the rotor plate, when the new plastic bag of staff's guide, can open the rotor plate, and then realizes the quick replacement of plastic bag.

As an embodiment of the present invention, the pressurizing switch includes a second spring 31, a fifth telescopic rod 32, and a rotating rod 3; the right side surface of the box body 1 is fixedly connected with a rotary column; the surface of the rotating column is rotatably connected with a rotating rod 3; a fifth telescopic rod 32 is fixedly connected to the right side surface of the box body 1 at the upper left position of the rotary column; a fixed block is fixedly connected to the right side surface of the box body 1 at a position right below the rotary column; a second spring 31 is connected between the fixed block and the rotating rod 3; the during operation, because sticky plate 22 and cutter 2 all need certain effort just can glue and cut off the plastic bag, in order to reduce the burden that operating personnel pressed compression switch, through setting up dwang 3, can easily pressurize fifth telescopic link 32 through rotating dwang 3, accomplish the pressurization back, can make dwang 3 reset fast through second spring 31, owing to adopted lever principle, consequently can be very big reduction operating personnel's working strength.

The high-temperature-resistant plastic bag comprises the following components in parts by mass: 20-30 parts of low-density polyethylene, 10-20 parts of modified carbon fiber, 5-10 parts of polyethylene, 10-15 parts of urea-formaldehyde resin, 10-20 parts of filler, 1-5 parts of plasticizer, 5-10 parts of antioxidant, 5-10 parts of corn starch pasting modified master batch and 1-5 parts of calcium carbonate; the high-temperature-resistant plastic bag is suitable for the preparation method of the high-temperature-resistant plastic bag; during working, the quick degradation capability of the plastic bag can be improved by adding the corn starch pasting modified master batch, the raw material cost of a plastic product can be reduced by adding calcium carbonate, the plastic bag also has the effect of improving the performance of a plastic material, and the impact resistance of matrix plastic can be obviously improved.

The specific working process is as follows:

when the fast food packaging machine works, when fast food packaging is needed, the fast food packaging machine can directly place the food into the packaging box, then staff can directly lift the plastic bag, because the plastic bag is of a rolled connecting structure, the next plastic bag can be taken while the food plastic bag is lifted, when one plastic bag is completely pulled out, a pressure switch is started, the pressure switch can enable a first telescopic rod 21 to eject out, the first telescopic rod 21 can further drive a corresponding adhesive plate 22 or a cutting plate 23 to move towards the direction of the plastic bag, on one hand, a cutter 2 on the surface of the cutting plate 23 can cut off two connected plastic bags, on the other hand, films on two sides of the next plastic bag can be respectively adhered to the surfaces of the corresponding adhesive plates 22, when the adhesive plates 22 and the cutting plate 23 reset, the fast unfolding of the mouth part of the plastic bag can be realized, the fast packaging of the next food is convenient, and the problem of a large amount of time consumed by personnel in the packaging process is reduced, and reduces the serious problem of food shifting in plastic bags; by arranging the second telescopic rod 24 and the third telescopic rod 25 and connecting the second telescopic rod 24 and the third telescopic rod 25, when the third telescopic rod 25 and the blocking piece 26 are extruded, gas in the third telescopic rod 25 can enter the second telescopic rod 24, and then the third telescopic rod 24 is ejected out to drive the cutter 2 to extend out of the chute, when a hand is in the packing box, the third telescopic rod 25 cannot contact the blocking piece 26, so that the cutter 2 cannot extend out of the chute, and the problem that the cutter 2 scratches the hand is avoided; by arranging the elastic base plate 27, when the hand of an operator is in the packing box, the hand can extrude the elastic base plate 27, so that the gas in the elastic base plate 27 enters the second telescopic rod 24, the second telescopic rod 24 is retracted, and the problem that the cutter 2 extends out of the sliding groove to scratch the hand is further avoided; through the arrangement of the base 14, the adjusting plate 15, the first spring and the fourth telescopic rod 17, when food is placed on the surface of the adjusting plate 15, the first spring and the fourth telescopic rod 17 can be compressed, gas in the fourth telescopic rod 17 can enter the appointed first telescopic rod 21, and then the two sticky plates 22 are driven to move relatively, so that the distance between the sticky plates 22 is shortened, when a worker lifts a plastic bag, the adjusting plate 15 resets under the action of the first spring, so that the first telescopic rod 21 and the sticky plates 22 are quickly separated, and the influence on lifting is avoided; through setting up dwang 3, can easily pressurize fifth telescopic link 32 through rotating dwang 3, accomplish the pressurization back, can make dwang 3 reset fast through second spring 31.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.