阅读说明：本技术 自动缠绕打包膜材料配方及生产工艺 (Formula and production process of automatic winding and packing film material ) 是由 宋林林 宋定俊 于 2020-07-07 设计创作，主要内容包括：本发明涉及农业收获作物包装材料,尤其是一种用于棉花、青贮饲料等收获打包作业时的缠绕自动打包膜的材料配方及生产工艺。缠绕自动打包膜材料配方,按质量百分比计量,包括以下原料：线性低密度聚乙烯、高压低密度聚乙烯、茂金属聚乙烯、色母、抗老化剂、紫外线吸收剂、抗静电剂；缠绕自动打包膜的生产工艺主要包括：备料；吹膜；涂胶；制作卷膜单元；卷膜单元连接成为成品卷膜。利用所述材料配方,所制成的打包膜材料厚度适中,抗老化、防静电性能稳定,抗缓冲强度高,具有良好的回缩率,抗刺穿性能好。本发明的生产工艺,流程设计合理,经济实用,使得物料包封口紧密牢固,生产出的打包膜在物料打包过程中可以快速分离。(The invention relates to a packaging material for agricultural harvested crops, in particular to a material formula for winding and automatically coating films during harvesting and packaging operations of cotton, silage and the like and a production process thereof. The formula of the winding automatic packaging film material comprises the following raw materials in percentage by mass: linear low-density polyethylene, high-pressure low-density polyethylene, metallocene polyethylene, color master batch, anti-aging agent, ultraviolet absorbent and antistatic agent; the production process of winding automatic coating mainly comprises the following steps: preparing materials; film blowing; gluing; manufacturing a film rolling unit; and connecting the film rolling units to form a finished rolled film. By utilizing the material formula, the prepared packaging film material has moderate thickness, stable ageing resistance and antistatic performance, high buffering strength, good retraction rate and good puncture resistance. The production process has reasonable flow design, is economical and practical, ensures that the material packing opening is tight and firm, and the produced packing film can be quickly separated in the material packing process.)

1. The formula of the winding automatic packaging film material is characterized by mainly comprising the following raw materials in percentage by mass: linear low-density polyethylene, high-pressure low-density polyethylene, metallocene polyethylene, color master batch, anti-aging agent, ultraviolet absorbent and antistatic agent;

the antioxidant is as follows: antioxidant 1010 is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], or antioxidant 1076 is octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate;

the ultraviolet absorbent is: 2-hydroxy-4-n-octoxybenzophenone, or 2- (2 ' -hydroxy-3 ', 5 ' -di-tert-butylphenyl) -5-chlorobenzotriazole;

the antistatic agent is: octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate;

the raw materials are uniformly stirred according to the following formula proportion, and five layers of co-extrusion film blowing machine equipment are utilized for blow molding:

wherein the raw material mixing ratio of the inner layer 1 to the inner layer 2 is as follows: 10-15% of high-pressure low-density polyethylene, 45-55% of linear low-density polyethylene, 35-45% of metallocene polyethylene, 0.5-1.5% of color master batch, 1-3% of anti-aging agent, 0.55-0.75% of ultraviolet absorbent and antistatic agent; 0.45 to 0.65 percent;

wherein the proportion of the middle layer 1 to the middle layer 2 is as follows: 5-10% of high-pressure low-density polyethylene, 50-60% of linear low-density polyethylene, 20-35% of metallocene polyethylene, 1-1.5% of color master batch, 1-3% of anti-aging agent, 0.3-0.55% of ultraviolet absorbent and antistatic agent; 0.6-0.85%;

wherein the outer layer comprises the following ingredients: 10-20% of high-pressure low-density polyethylene, 40-60% of linear low-density polyethylene, 25-40% of metallocene polyethylene, 1.5-2.0% of color master batch, 1-3% of anti-aging agent, 0.5-1% of ultraviolet absorbent and antistatic agent: 0.5 to 1.55 percent.

2. The production process of the winding automatic coating film according to claim 1, which is characterized by mainly comprising the following steps:

(1) preparing materials:

the method comprises the following raw materials: linear low-density polyethylene, high-pressure low-density polyethylene, metallocene polyethylene, color master batch, anti-aging agent, ultraviolet absorbent and antistatic agent;

the antioxidant is as follows: antioxidant 1010 is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], or antioxidant 1076 is octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate;

the ultraviolet absorbent is: 2-hydroxy-4-n-octoxybenzophenone, or 2- (2 ' -hydroxy-3 ', 5 ' -di-tert-butylphenyl) -5-chlorobenzotriazole;

the antistatic agent is: octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate;

the raw materials are uniformly stirred according to the following formula proportion, and five layers of co-extrusion film blowing machine equipment are utilized for blow molding:

wherein the raw material mixing ratio of the inner layer 1 to the inner layer 2 is as follows: 10-15% of high-pressure low-density polyethylene, 45-55% of linear low-density polyethylene, 35-45% of metallocene polyethylene, 0.5-1.5% of color master batch, 1-3% of anti-aging agent, 0.55-0.75% of ultraviolet absorbent and antistatic agent; 0.45 to 0.65 percent;

wherein the proportion of the middle layer 1 to the middle layer 2 is as follows: 5-10% of high-pressure low-density polyethylene, 50-60% of linear low-density polyethylene, 20-35% of metallocene polyethylene, 1-1.5% of color master batch, 1-3% of anti-aging agent, 0.3-0.55% of ultraviolet absorbent and antistatic agent; 0.6-0.85%;

wherein the outer layer comprises the following ingredients: 10-20% of high-pressure low-density polyethylene, 40-60% of linear low-density polyethylene, 25-40% of metallocene polyethylene, 1.5-2.0% of color master batch, 1-3% of anti-aging agent, 0.5-1% of ultraviolet absorbent and antistatic agent: 0.5-1.55%;

(2) film blowing: using a five-layer co-extrusion film blowing machine for film blowing, controlling the temperature of each of the inner layer 1, the inner layer 2, the middle layer 1, the middle layer 2 and the outer layer, controlling the extrusion amount of the five layers, and adjusting the thickness of the film to prepare a substrate roll film;

the temperature of the inner layer 1 and the inner layer 2 is controlled at 115-170 ℃, the temperature of the middle layer 1 and the middle layer 2 is controlled at 150-200 ℃, and the temperature of the outer layer is controlled at 140-210 ℃; the five-layer coextrusion mass ratio is 1: 1: 1: 1: 2, the thickness of the rolled film is 0.07mm-0.08 mm;

(3) gluing: the produced substrate roll film is placed at a discharge position and fed through each stage of parts according to the following sequence: unreeling shaft → corona machine → coating mesh line roller → glue homogenizing roller → traction rubber roller → suction box → oven → rectifying arc roller → cooling cylinder → reeling traction roller → floating pendulum roller for reeling;

the base material film rolling is composed of a plurality of same film rolling units, and in the step of coating the mesh wire roller with glue, a sticky area and a non-sticky area are arranged on each film rolling unit, and the specific distribution structure is as follows:

a non-adhesive area A, an adhesive area B, a non-adhesive area C and an adhesive area D are sequentially arranged on the same side surface of the film rolling unit in a longitudinal parallel mode, one end of the film rolling unit is the adhesive area D, the other end of the film rolling unit is the non-adhesive area A, and the total length of the adhesive area B, D is larger than that of the non-adhesive area A, C;

or, on the same side surface of the film rolling unit, one end of the film rolling unit is provided with a non-adhesive area a, the other end of the film rolling unit is provided with an adhesive area b, a plurality of adhesive strips are transversely arranged in a longitudinal area c between the non-adhesive area a and the adhesive area b at intervals, and the length of the longitudinal area c is greater than the total length of the non-adhesive area a and the adhesive area b;

or, a non-adhesive area E is provided on one side surface of the end of the roll film unit, and the front and back surfaces of the rest of the roll film substrate are provided with adhesive areas, i.e., the length of the adhesive area F1, F2, F1 or F2 is larger than that of the non-adhesive area E;

the membrane is rolled up to above-mentioned substrate after the top layer is interrupted the rubberizing, heats through the oven, lets the solidification of top layer solid glue, wherein in oven treatment step, at first opens and heats and the hair-dryer switch, preheats and heats, and there is 12 sections heating areas from the design of oven import department altogether, sets gradually 1 district from each temperature control area temperature of import department: 55-60 ℃, zone 2: 62-65 ℃, zone 3: 70-73 ℃, zone 4: 75-77 ℃, zone 5: 80-84 ℃, zone 6: 85-88 ℃, zone 7: 90-92 ℃, zone 8: 85-88 ℃, zone 9: 80-84 ℃, zone 10: 75-77 ℃, zone 11: 70-73 ℃, zone 12: 62 to 65 ℃;

after the preheating and heating temperature rises to the set temperature, starting a starting button, starting all the components to move, and finishing the gluing operation in sequence to obtain a wound semi-finished product film roll;

(4) manufacturing a film rolling unit: putting the semi-finished film coated with the glue into rewinding equipment, cutting off adjacent film rolling units according to the designed length, wherein the head and tail interfaces of the adjacent film rolling units need to be beveled, namely, the end parts of the film rolling units are provided with oblique cutting lines, and the end parts are attached with electronic tags for identification and separation;

(5) and connecting the film rolling units into finished rolled films: the non-adhesive area of the next film rolling unit is connected with the adhesive area of the previous film rolling unit end to end by using an adhesion device, the steps are repeated, and a continuous packaging finished product film is formed through a winding device;

the structure of the adhesion device comprises a double-sided adhesive tape and a separation film, wherein the double-sided adhesive tape is divided into two sections, namely a double-sided adhesive tape I section and a double-sided adhesive tape II section, the double-sided adhesive tape I section and the double-sided adhesive tape II section are both attached to the separation film, and a gap is formed between the double-sided adhesive tape I section and the double-sided adhesive tape II section; the section I of the double-sided adhesive tape and the attached separation membrane part are turned upwards by 180 degrees and are arranged in parallel with the section II of the double-sided adhesive tape and the attached separation membrane part;

the second section of the double-sided adhesive tape is adhered to the upper part of the end part of one of the film rolling units, the first section of the double-sided adhesive tape which is turned upwards is adhered to the lower part of the end part of the next film rolling unit, and connection between the film rolling units is formed.

3. The wound automatic packaging film according to claim 2, wherein the length of each of the non-adhesive area A and the non-adhesive area C is 3.5 m, and the length of each of the adhesive area B and the adhesive area D is 7 m.

4. The wound automatic taping machine according to claim 2, wherein the length of the non-adhesive area a is 7m, and the total length of the longitudinal area c and the adhesive area b is 14 m.

5. The wound automatic taping machine of claim 2, wherein the length of the non-adhesive zone E is one third of the total length of the taping unit.

6. The automatic winding and packaging film according to claim 2, 3, 4 or 5, wherein the oblique cutting line arranged at the end of the film winding unit forms an included angle a of 110-140 ° with the edge line of the end.

7. The wound automatic packaging film according to claim 2, 3, 4 or 5, wherein the length of the section I of the double-sided adhesive tape is smaller than that of the section II of the double-sided adhesive tape.

8. The wound automatic taping film of claim 6, wherein the length of the first section of double-sided tape is less than the length of the second section of double-sided tape.

Technical Field

The invention relates to the technical field of agricultural harvested crop packaging materials, in particular to a material formula for winding and automatically coating films during harvesting and packaging operations of cotton, silage and the like and a production process.

Background

The winding packaging roll film is applied to the field of packaging of crop harvesting materials, automatic packaging can be achieved through an automatic packaging machine, manual operation is not needed in the using process, packaging efficiency is greatly improved, and economic benefits are improved.

Disclosure of Invention

The invention aims to provide a formula of a winding automatic coating film material which has stable ageing resistance and antistatic performance, high anti-buffer strength, good retraction rate, no influence of the temperature of a wrapped product, low temperature resistance and good puncture resistance;

in addition, the method is simple, the production cost is reduced, the tightness and firmness of the material bag sealing are improved, the usage amount of the film rolling unit connection adhesive is reduced, each unit is integrally formed, the viscosity of the package can be accurately adjusted according to the requirements of customers, the efficiency is higher, and in the process of separating the film rolling unit in the packaging process, the winding automatic film packaging production process which is not easy to adhere is realized.

The invention discloses a formula of a winding automatic packaging film material, which is measured by mass percent and mainly comprises the following raw materials: linear low-density polyethylene, high-pressure low-density polyethylene, metallocene polyethylene, color master batch, anti-aging agent, ultraviolet absorbent and antistatic agent;

the antioxidant is as follows: antioxidant 1010 is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], or antioxidant 1076 is octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate;

the ultraviolet absorbent is: 2-hydroxy-4-n-octoxybenzophenone, or 2- (2 ' -hydroxy-3 ', 5 ' -di-tert-butylphenyl) -5-chlorobenzotriazole;

the antistatic agent is: octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate;

the raw materials are uniformly stirred according to the following formula proportion, and five layers of co-extrusion film blowing machine equipment are utilized for blow molding:

wherein the raw material mixing ratio of the inner layer 1 to the inner layer 2 is as follows: 10-15% of high-pressure low-density polyethylene, 45-55% of linear low-density polyethylene, 35-45% of metallocene polyethylene, 0.5-1.5% of color master batch, 1-3% of anti-aging agent, 0.55-0.75% of ultraviolet absorbent and antistatic agent; 0.45-0.65%.

Wherein the proportion of the middle layer 1 to the middle layer 2 is as follows: 5-10% of high-pressure low-density polyethylene, 50-60% of linear low-density polyethylene, 20-35% of metallocene polyethylene, 1-1.5% of color master batch, 1-3% of anti-aging agent, 0.3-0.55% of ultraviolet absorbent and antistatic agent; 0.6 to 0.85 percent.

Wherein the outer layer comprises the following ingredients: 10-20% of high-pressure low-density polyethylene, 40-60% of linear low-density polyethylene, 25-40% of metallocene polyethylene, 1.5-2.0% of color master batch, 1-3% of anti-aging agent, 0.5-1% of ultraviolet absorbent and antistatic agent: 0.5 to 1.55 percent.

The production process for winding automatic coating film mainly comprises the following steps:

(1) preparing materials:

the method comprises the following raw materials: linear low-density polyethylene, high-pressure low-density polyethylene, metallocene polyethylene, color master batch, anti-aging agent, ultraviolet absorbent and antistatic agent;

the antioxidant is as follows: antioxidant 1010 is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], or antioxidant 1076 is octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate;

the ultraviolet absorbent is: 2-hydroxy-4-n-octoxybenzophenone, or 2- (2 ' -hydroxy-3 ', 5 ' -di-tert-butylphenyl) -5-chlorobenzotriazole;

the antistatic agent is: octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate;

the raw materials are uniformly stirred according to the following formula proportion, and five layers of co-extrusion film blowing machine equipment are utilized for blow molding:

wherein the raw material mixing ratio of the inner layer 1 to the inner layer 2 is as follows: 10-15% of high-pressure low-density polyethylene, 45-55% of linear low-density polyethylene, 35-45% of metallocene polyethylene, 0.5-1.5% of color master batch, 1-3% of anti-aging agent, 0.55-0.75% of ultraviolet absorbent and antistatic agent; 0.45-0.65%.

Wherein the proportion of the middle layer 1 to the middle layer 2 is as follows: 5-10% of high-pressure low-density polyethylene, 50-60% of linear low-density polyethylene, 20-35% of metallocene polyethylene, 1-1.5% of color master batch, 1-3% of anti-aging agent, 0.3-0.55% of ultraviolet absorbent and antistatic agent; 0.6 to 0.85 percent.

Wherein the outer layer comprises the following ingredients: 10-20% of high-pressure low-density polyethylene, 40-60% of linear low-density polyethylene, 25-40% of metallocene polyethylene, 1.5-2.0% of color master batch, 1-3% of anti-aging agent, 0.5-1% of ultraviolet absorbent and antistatic agent: 0.5-1.55%;

(2) film blowing: using a five-layer co-extrusion film blowing machine for film blowing, controlling the temperature of each of the inner layer 1, the inner layer 2, the middle layer 1, the middle layer 2 and the outer layer, controlling the extrusion amount of the five layers, and adjusting the thickness of the film to prepare a substrate roll film;

the temperature of the inner layer 1 and the inner layer 2 is controlled at 115-170 ℃, the temperature of the middle layer 1 and the middle layer 2 is controlled at 150-200 ℃, and the temperature of the outer layer is controlled at 140-210 ℃; the five-layer coextrusion mass ratio is 1: 1: 1: 1: 2, the thickness of the rolled film is 0.07mm-0.08 mm;

(3) gluing: the produced substrate roll film is placed at a discharge position and fed through each stage of parts according to the following sequence: unreeling shaft → corona machine → coating mesh line roller → glue homogenizing roller → traction rubber roller → suction box → oven → rectifying arc roller → cooling cylinder → reeling traction roller → floating pendulum roller for reeling;

the base material film rolling is composed of a plurality of same film rolling units, and in the step of coating the mesh wire roller with glue, a sticky area and a non-sticky area are arranged on each film rolling unit, and the specific distribution structure is as follows:

a non-adhesive area A, an adhesive area B, a non-adhesive area C and an adhesive area D are sequentially arranged on the same side surface of the film rolling unit in a longitudinal parallel mode, one end of the film rolling unit is the adhesive area D, the other end of the film rolling unit is the non-adhesive area A, and the total length of the adhesive area B, D is larger than that of the non-adhesive area A, C;

the method specifically comprises the following steps: the length of the non-adhesive area A and the length of the non-adhesive area C are both 3.5 meters, and the length of the adhesive area B and the length of the adhesive area D are both 7 meters. The end adhesive area D of the previous roll of film unit is connected with the non-adhesive area A of the next roll of film unit through an adhesion device, and the roll film units are connected through the adhesion device to form a continuous finished roll film.

Or, on the same side surface of the film rolling unit, one end of the film rolling unit is provided with a non-adhesive area a, the other end of the film rolling unit is provided with an adhesive area b, a plurality of adhesive strips are transversely arranged in a longitudinal area c between the non-adhesive area a and the adhesive area b at intervals, and the length of the longitudinal area c is greater than the total length of the non-adhesive area a and the adhesive area b;

in particular, it is possible that the length of the non-adhesive zone a is 7 metres and the total length of the longitudinal zones c and of the adhesive zones b is 14 metres. The adhesive area b of the previous film rolling unit and the non-adhesive area a of the next film rolling unit are connected through the adhesion device. The film rolling units are connected through a bonding device to form a continuous finished rolled film.

Or, a non-adhesive area E is provided on one side surface of the end of the roll film unit, and the front and back surfaces of the rest of the roll film substrate are provided with adhesive areas, i.e., the length of the adhesive area F1, F2, F1 or F2 is larger than that of the non-adhesive area E;

the method specifically comprises the following steps: the length of the non-adhesive area E is one third of the total length of the film rolling unit; the sticky areas F1 and F2 account for two thirds of the length of the film rolling unit, and the sticky area of the previous film rolling unit and the non-sticky area of the next film rolling unit are connected through a sticking device.

The membrane is rolled up to above-mentioned substrate after the top layer is interrupted the rubberizing, heats through the oven, lets the solidification of top layer solid glue, wherein in oven treatment step, at first opens and heats and the hair-dryer switch, preheats and heats, and there is 12 sections heating areas from the design of oven import department altogether, sets gradually 1 district from each temperature control area temperature of import department: 55-60 ℃, zone 2: 62-65 ℃, zone 3: 70-73 ℃, zone 4: 75-77 ℃, zone 5: 80-84 ℃, zone 6: 85-88 ℃, zone 7: 90-92 ℃, zone 8: 85-88 ℃, zone 9: 80-84 ℃, zone 10: 75-77 ℃, zone 11: 70-73 ℃, zone 12: 62 to 65 ℃;

after the preheating and heating temperature rises to the set temperature, starting a starting button, starting all the components to move, and finishing the gluing operation in sequence to obtain a wound semi-finished product film roll;

(4) manufacturing a film rolling unit: putting the semi-finished film coated with the glue into rewinding equipment, cutting off adjacent film rolling units according to the designed length, wherein the head and tail interfaces of the adjacent film rolling units need to be beveled, namely, the end parts of the film rolling units are provided with oblique cutting lines, and the end parts are attached with electronic tags for identification and separation;

(5) and connecting the film rolling units into finished rolled films: the non-adhesive area of the next film rolling unit is connected with the adhesive area of the previous film rolling unit end to end by using an adhesion device, the steps are repeated, and a continuous packaging finished product film is formed through a winding device;

the structure of the adhesion device comprises a double-sided adhesive tape and a separation film, wherein the double-sided adhesive tape is divided into two sections, namely a double-sided adhesive tape I section and a double-sided adhesive tape II section, the double-sided adhesive tape I section and the double-sided adhesive tape II section are both attached to the separation film, and a gap is formed between the double-sided adhesive tape I section and the double-sided adhesive tape II section; the section I of the double-sided adhesive tape and the attached separation membrane part are turned upwards by 180 degrees and are arranged in parallel with the section II of the double-sided adhesive tape and the attached separation membrane part;

the second section of the double-sided adhesive tape is adhered to the upper part of the end part of one of the film rolling units, the first section of the double-sided adhesive tape which is turned upwards is adhered to the lower part of the end part of the next film rolling unit, and connection between the film rolling units is formed.

Preferably, the non-adhesive zones A and C are 3.5 meters in length, and the adhesive zones B and D are 7 meters in length.

Preferably, the length of the non-adhesive zone a is 7 meters and the total length of the longitudinal zones c and the adhesive zones b is 14 meters.

Preferably, the length of the non-adhesive zone E is one third of the total length of the film winding unit.

Preferably, the oblique cutting line arranged at the end part of the film rolling unit forms an included angle a of 110-140 degrees with the edge line of the end part.

Preferably, the length of the section I of the double-sided adhesive tape is smaller than that of the section II of the double-sided adhesive tape. And a long section II of double-sided adhesive tape is left on the film rolling unit which is being packed, so that the seal for the bag is firmer.

The packaging film material prepared by the formula of the winding automatic packaging film material provided by the invention has the advantages of moderate thickness, stable ageing resistance and antistatic performance, high anti-buffering strength, good retraction rate and good puncture resistance. When in use, the product is wound and packaged by virtue of the retraction force after the packaging film is stretched to form a compact cylindrical bag-shaped object occupying no space, so that the mutual dislocation and movement of the product in the transportation process can be effectively prevented, and the packaging effect is remarkable.

The production process of the automatic winding and coating film provided by the invention comprises the following steps: the winding film is placed on a film feeding shaft, is drawn to a plurality of groups of roller shafts, is conveyed to a gluing net wire grid by a conveying roller after being subjected to corona treatment (the gluing amount of each square is adjusted according to the requirements of different products on viscosity), and after the surface layer is subjected to discontinuous gluing, the surface layer solid glue is solidified after passing through a 12-section drying oven and the drying oven. And rolling the semi-finished product by a rolling machine to obtain a semi-finished product coating film.

The film coated with the glue is placed into rewinding equipment, each unit assembly of the film coating is provided with a sticky area and a non-sticky area, and the length of each unit is determined by the design length, so that the number of layers is the same when each product is packed and wound, the structure is stable, the product is not easy to fry, and the product is not easy to scatter and tightly adhere. The head-tail interface of the adjacent units also needs to be beveled to prepare for the smooth unfolding and paving of the next unit. The non-sticky area of the next unit and the sticky area of the last unit are separated by the strong sticky glue and the separation film, and the tail of each unit is provided with the electronic tag to stop the induction, so that the waste of the base material due to repeated winding is avoided.

The packaging sections of two adjacent units are cut off, the tail sticky area of the last unit and the head non-sticky area of the next unit are stuck together up and down by utilizing the adhesion device with a formulated structure, each unit is formed by head-to-tail connection of the adhesion device, the electronic identification label is stuck at the fixed position of the tail sticky area of the last unit to realize the packaging sections which are automatically separated, and the steps are repeated to form a finished packaging film through the winding device.

The working principle of the invention is as follows: the film is blown by five layers of co-extrusion equipment, the large-scale gluing equipment is used for gluing at uniform intervals, and finally, the slitting and winding equipment is used for combining a plurality of unit parts into a whole automatic coating film.

The machine can produce certain counterforce between membrane and the product of beating when packing the product, thereby the adhesion device can be because the smooth separation of counterforce and next unit section, adhesion device one end after the separation can twine the packing product and seal.

The length that will twine automatic packing membrane design into the viscidity district is longer than non-viscidity district, has improved the fastness of roll membrane process, the tip of viscidity district, non-viscidity district all sets to the bias cut line for the width of rolling up the membrane tip shortens, has overcome the width broad, and the locomotive is when advancing, when rolling up membrane unit and rolling up membrane unit separation, one end separation, and the not enough of other end adhesion, when utilizing a packing section circulation to end, the material of packing is convenient for pull open adhesion device because of the pulling force that rotation inertia produced, can reach quick separation's purpose.

In addition, an electronic label is attached to the end part of the sticky area of each film rolling unit, and the electronic identification technology can be utilized to assist in identification and separation between the film rolling units. The adhesion device comprises a double-sided adhesive tape and a separation film, the double-sided adhesive tape is designed into a two-section structure, one long and one short, when the film rolling unit is separated, the long part, namely the section II of the double-sided adhesive tape is left on the film rolling unit which is being packed, the finished material is packed into a port, and the double-sided adhesive tape guarantees the tightness of the seal; the short part, namely the section I of the double-sided adhesive is left on the next film rolling unit, so that the designed structure is simpler, the adhesive usage amount of the adhesion device is saved, and the production process is simplified while the production cost is reduced.

Compared with the prior art, the production process has the advantages that each unit of the automatic packaging film is integrally formed, the automatic packaging film is not influenced by the temperature of packaged products, is low-temperature resistant, the viscosity of the package can be accurately adjusted according to the requirements of customers, the efficiency is higher, the products can be packaged more tightly, the phenomenon of broken package and explosion can not occur, more importantly, the produced film is neat and flat, and the number of the products packaged by a single bundle of the packaging film is higher than the number of the products packaged by the existing products while the diameter of the packaged film is not changed.

The production process provided by the invention has the advantages that the flow design is reasonable, the process is economical and practical, the material packaging openings are tight and firm, the produced packaging films are not easy to adhere in the material packaging process, and when one packaging section is used for circulation, the adhesion device can be conveniently pulled open by the pulling force generated by the packaged materials due to the rotation inertia, so that the materials can be quickly separated.

Drawings

FIG. 1 is a schematic view of the structure of a rolled substrate film according to the present invention.

Fig. 2 is a schematic structural diagram of a film winding unit in embodiment 1 of the present invention.

Fig. 3 is a schematic structural diagram of the film winding unit and the film winding unit connected by the adhesion device in embodiment 1 of the present invention.

FIG. 4 is a schematic view of a partially enlarged connection structure of the adhesion device in the structure of FIG. 3 according to the present invention.

Fig. 5 is a schematic structural diagram of the adhesion device in an unseparated state when the film winding unit is used for packaging in embodiment 1 of the present invention.

Fig. 6 is a schematic structural diagram of a state after the adhesion device is separated when the film winding unit is used for packaging in embodiment 1 of the present invention.

Fig. 7 is a schematic structural diagram of a film winding unit in embodiment 2 of the present invention.

Fig. 8 is a schematic structural view of the adhesion device in an unseparated state when the film winding unit is used for packaging in embodiment 2 of the present invention.

Fig. 9 is a schematic structural diagram of a state after the adhesion device is separated when the film winding unit is used for packaging in embodiment 2 of the present invention.

Fig. 10 is a schematic structural diagram of a film winding unit in embodiment 3 of the present invention.

Fig. 11 is a schematic structural view of the adhesion device in an unseparated state when the film winding unit is used for packaging in embodiment 3 of the present invention.

Fig. 12 is a schematic structural diagram of a state after the adhesion device is separated when the film winding unit is used for packaging in embodiment 3 of the present invention.

Shown in the figure: the adhesive tape comprises a non-adhesive area A1, an adhesive area B2, a non-adhesive area C3, an adhesive area D4, an included angle a5, an electronic label 6, a diagonal line 7, a film rolling unit 8, a gap 9, a double-sided adhesive I section 10, a separating film 11, a double-sided adhesive II section 12, a finished product film rolling 13, a non-adhesive area a14, a longitudinal area C15, an adhesive strip 16, an adhesive area B17, a non-adhesive area E18, an adhesive area F1 19, an adhesive area F2, an end edge line 21, an inner layer 1-1, an inner layer 2 1-2, an intermediate layer 1-3, an intermediate layer 2 from 1 to 4 and an outer layer 1-5.

Detailed Description