Transparent packaging paper bag production process

Abstract

The invention discloses a production process of a transparent packaging paper bag. The production process comprises the following steps: S1, product design; s2, integral printing operation; s3, the manual bag is covered with a film; s4, surface finishing is conducted after film covering; s5, carrying out die cutting on the portable paper bag; s6, pasting the hand bag; s7, hand bag forming: through set selection for pattern styles, control for paper bag raw material conveying rate and adjustment for printing equipment parameters, stable and continuous printing operation is performed on paper bag raw materials, so that the problems of non-uniform product quality and reduced product production efficiency caused by participation of workers are greatly reduced; the whole printing quality is improved through control over printing equipment, the printing process and product design are integrated, paper bag raw materials can be completely separated from participation of workers after typesetting and on a machine, meanwhile, the printing quality is further improved through film covering and surface finishing after printing is completed, transparent packaging paper bag production is more convenient and safer, and the production efficiency is improved. And the labor cost is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of paper bag processing, in particular to a production process of a transparent packaging paper bag. Background Art

[0002] The four pillars of the modern packaging industry base materials are: paper, plastic, glass, and metal; among these four packaging base materials, paper products have the fastest growth and a wider source of raw materials. They are not as fragile as glass, nor as heavy and inconvenient to carry as metal materials, and they do not have as many environmental problems as plastics; compared with the three major types of packaging base materials, plastics, metals, and glass, paper packaging is one of the most promising green packaging materials using LCA, or the "eco-cycle assessment" technology for quantitative evaluation; currently, paper boxes, cartons, paper bags, paper barrels, pulp molded products, etc. have become an important part of the modern packaging industry, and are widely used in the sales, packaging and transportation packaging of food, alcohol, light industry, medicine, health products, cosmetics, electronics, home appliances, clothing, toys, stationery, etc., to ensure that these packages are harmless and safe to humans and promote environmental protection; therefore, paper packaging is widely used in daily life and is considered to be the most promising and potential packaging material.

[0003] The Chinese invention patent application number CN201110101320.2 discloses a method for producing sterilized packaging paper, and the steps are as follows: ① a process for preparing the sizing solution in the pulp; ② a process for preparing the surface sizing solution; ③ a pulp crushing process, in which the wood pulp is southern pine produced in the United States, and soda ash and carboxymethyl cellulose are added to the crushing solution; ④ a pulping process, in which a wet strength agent is added; ⑤ a screen forming process; ⑥ a surface sizing process, in which the surface sizing solution uses cassava modified starch and polyvinyl alcohol; ⑦ a completion process, so that the prepared packaging paper has a sterilization property.

[0004] The above-mentioned patents rely on manual or semi-automatic production during the production process, the process is relatively complicated, and the production efficiency is low, so a transparent packaging paper bag production process is needed now. Summary of the invention

[0005] The purpose of the present invention is to provide a production process for transparent packaging paper bags, which imposes limitations on operations to ensure that after the raw materials are put into use, the steps of printing, surface treatment, and forming are automatically completed, thereby reducing human participation and improving the production efficiency of the bags, so as to solve the technical problems mentioned in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a production process of a transparent packaging paper bag, comprising the following steps:

[0007] S1. Product design: select and design accurate graphic styles through computers, determine the graphic styles at the printing position of transparent packaging paper bags, select printing equipment parameters, plan the specifications of the raw paperboard of transparent packaging paper bags, and the layout of the raw paperboard;

[0008] S2. Overall printing operation: set the printing intensity during the printing process to control the thickness of the printing ink layer, avoid ink streaking, control the overall printing direction of the device, make the printing direction correspond to the size of the paper bag mouth, upper tongue and bottom, control the printing color difference, and improve the printing effect and graphic style integrity;

[0009] S3. Handmade bag lamination: Choose the appropriate lamination glue, especially when subsequent concave and convex processing is required;

[0010] Control the laminating speed and select the appropriate glue application amount according to the vehicle speed;

[0011] Products that need to be laminated must be completely dry after printing before lamination can be carried out. Products that have just been laminated also need to be left for a period of time before rolling, cutting, or embossing.

[0012] If the powder is too large during printing, it is necessary to remove the powder before lamination;

[0013] S4. Surface finishing after lamination: hot stamping, embossing and glazing processes can be selected, and one or more processes can be selected and used in combination according to needs;

[0014] Hot stamping processing requires selecting the printing position and making hot stamping selections based on the printed graphic style;

[0015] The concave and convex processing needs to be selected according to the lamination status, and the position is determined according to the printing position, and used in conjunction with the hot stamping or printing process;

[0016] Glazing processing needs to be selected according to printing, hot stamping and embossing processing technology to make the printed graphic style more complete, and it is necessary to fully cover the graphic style of printing, hot stamping and embossing processing technology;

[0017] S5. Die-cutting of paper bags: Choose the correct template;

[0018] Control the working pressure well; the die-cutting edge should not have burrs, the dark line should be clear and easy to fold, but the line should be avoided;

[0019] Considering the characteristics of paper, along the direction of the paper's threads, the paper is easier to fold, so the molding pressure can be smaller. On the other hand, perpendicular to the direction of the paper's threads, the paper is more difficult to fold, so the molding pressure can be increased locally.

[0020] The toughness of cardboard is poor. If there is no surface coating, special attention should be paid to the die-cutting effect;

[0021] S6. Bag pasting: Choose the right adhesive according to the paper bag material;

[0022] S7, handbag forming: the handbag forming work needs to be completed according to the layout of the paper bag paper after printing.

[0023] Preferably, the printing equipment parameters in S1 include:

[0024] Front baffle: controls the paper feed height, the gap is set to 1.5 times the paper thickness, the distance is moderate;

[0025] Side baffle: adjust the length of paper feeding, the specification on the side close to the aligning plate is 2mm more;

[0026] Side paper aligning: adjust the length of the paper feeding to align the paper, and the aligning board is inserted 10-20mm into the side baffle;

[0027] Rear baffle: adjust the paper feeding width of the cardboard. The distance between the rear baffle and the front baffle is 3mm larger than the width of the cardboard.

[0028] Paper feed roller: adjust the paper feeding distance of the cardboard. The distance adjustment should not exceed or be less than 0.1mm of the cardboard thickness after being crushed by the paper feed roller. In special circumstances, it can be adjusted according to the specific situation.

[0029] Preferably, the printing process in S2 includes:

[0030] Printing operators should pay attention to the control of ink balance, the status of equipment and printing equipment, and color difference;

[0031] When printing, pay attention to the printing position up and down and back and forth to ensure the size of the paper bag mouth, upper tongue and bottom;

[0032] If the product needs to be laminated or processed after printing, you must also pay attention to controlling the thickness of the ink layer as much as possible, reducing the use of additives, and minimizing the amount of powder spraying.

[0033] Preferably, the laminating glue in S3 includes any one of water-based laminating glue, laminating glue for ink, and hot-melt laminating glue;

[0034] The amount of glue applied is controlled according to the speed at which the printing equipment conveys the paper bag, and the printed graphic pattern position needs to be completely coated;

[0035] After the lamination printing is completed, it is necessary to wait for 10-30 minutes, and the drying time after lamination printing is changed according to the adaptability of the actual ambient temperature;

[0036] Specifically, you need to wait for 30 minutes after the lamination is completed in an environment of 15°C, 20 minutes after the lamination is completed in an environment of 25°C, and 10 minutes after the lamination is completed in an environment of 35°C.

[0037] Preferably, during the surface finishing operation in S4:

[0038] The equipment must press the paper bags tightly to ensure the surface flatness of the hot stamped products;

[0039] Post-printing treatment of the surface of hot stamping products (lamination, oiling, etc.);

[0040] The hot stamping suitability of the anodized aluminum used;

[0041] The condition of the hot stamping plates and hot stamping machines.

[0042] Preferably, the die-cutting in S5 needs to control the cutting interval according to the feeding rate of the printing equipment to ensure that the printed graphic style is complete after cutting;

[0043] The pressure standard is to adjust the overall pressure until 70%-80% of the tangent line can be cut.

[0044] Preferably, the adhesive in S6 needs to ensure the position specification to avoid a large adhesive coating range.

[0045] Preferably, the pressing pressure of the handbag molding is adjusted according to the folding model, and each folding step needs to be flattened during the molding process. After the paper bag is completely formed, it is pressed by a pressure device, and the pressing time is maintained in the range of 3-5 seconds.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] Through the selection of graphic styles, the control of the conveying rate of paper bag raw materials, and the adjustment of printing equipment parameters, the paper bag raw materials can be printed stably and continuously, which greatly reduces the problems of inconsistent product quality and reduced product production efficiency caused by staff participation. The overall printing quality is improved through the control of printing equipment, and the printing process is integrated with product design, so that the paper bag raw materials can be completely separated from the participation of workers after typesetting and loading on the machine. At the same time, after printing, the printing quality is further improved through lamination and surface finishing to ensure the quality of paper bags. By selecting cutting templates and pasting and forming steps, the production of transparent packaging paper bags is more convenient and safe, and the labor cost is greatly reduced, and the production quality and efficiency of transparent packaging paper bags are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a production process flow chart of the present invention. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] The present invention provides: a production process for a transparent packaging paper bag, such as Figure 1 As shown, the following steps are included:

[0051] S1. Product design: select and design accurate graphic styles through computers, determine that the graphic styles are located at the printing position of transparent packaging paper bags, select printing equipment parameters, plan the specifications of the raw cardboard for transparent packaging paper bags, and the layout of the raw cardboard; the brush equipment parameters include: front baffle: control the paper feeding height, the gap is set to 1.5 times the paper thickness, and the distance is relatively moderate; side baffle: adjust the length of paper feeding, and the specifications on the side of the slapping plate are 2mm more; paper aligning side slapping: adjust the length of paper feeding of the cardboard to align the effect, and the slapping plate is 10-20mm into the side baffle; rear baffle: adjust the paper feeding width of the cardboard, and the distance between the rear baffle and the front baffle is 3mm larger than the width of the cardboard; paper feeding roller: adjust the paper feeding spacing of the cardboard. The spacing adjustment cannot exceed or be less than 0.1mm of the cardboard thickness after being crushed by the paper feeding roller. In special circumstances, it can be adjusted according to the specific situation.

[0052] S2. Overall printing operation: set the printing intensity during the printing process to control the thickness of the printing ink layer, avoid ink streaking, control the overall printing direction of the device, make the printing direction correspond to the size of the paper bag mouth, upper tongue and bottom, control the printing color difference, and improve the printing effect and graphic style integrity; the printing operator should pay attention to the control of ink balance, the status of the equipment printing equipment, and the color difference problem; when printing, pay attention to the up and down and back and forth printing positions to ensure the size of the paper bag mouth, upper tongue and bottom; if the product needs to be laminated after printing, it must also pay attention to controlling the ink layer thickness as much as possible, reducing the use of additives, and minimizing the use of spray powder.

[0053] S3. Hand-made bag lamination: Choose appropriate laminating glue, especially when subsequent concave and convex processing is required; control the laminating speed and choose the appropriate amount of glue according to the vehicle speed; products to be laminated must be completely dry after printing before laminating operations can be carried out, and newly laminated products also need to be left for a period of time before rolling, cutting, and concave and convex processing; if the powder spray is too large during printing, powder removal operations must be carried out before laminating; laminating glue includes any one of water-based laminating glue, laminating glue for ink, and hot-melt laminating glue; the amount of glue applied is controlled according to the speed at which the printing equipment conveys the paper bag, and the printed graphic pattern position needs to be completely coated; after the laminating printing is completed, it is necessary to wait for 10-30 minutes, and the specific drying time after laminating printing is changed according to the actual ambient temperature adaptability; specifically, it is necessary to wait for 30 minutes after laminating is completed at 15°C, 20 minutes after laminating is completed at 25°C, and 10 minutes after laminating is completed at 35°C.

[0054] S4. Surface finishing after lamination: hot stamping, embossing and glazing processes can be selected, and one or more processes can be selected for combination as needed; hot stamping processing requires selecting the printing position, and hot stamping selection is made according to the printed graphic style; embossing processing needs to be selected according to the lamination status, and the position is determined according to the printing position, and it is used in conjunction with hot stamping or printing processes; glazing processing needs to be selected according to printing, hot stamping and embossing processing processes to make the printed graphic style more complete, and it needs to completely cover the graphic style of printing, hot stamping and embossing processing processes; during surface finishing operations: the equipment must press the paper bag tightly to ensure the surface flatness of the hot stamped product; the surface post-printing treatment process of the hot stamped product (lamination, oiling, etc.); the hot stamping suitability of the electrochemical aluminum used; the status of the hot stamping plate and hot stamping machine.

[0055] S5. Die-cutting of paper bags: choose the right template; control the working pressure; the die-cutting edge should be free of burrs, the dark lines should be clear and easy to fold, but the lines should be avoided; considering the characteristics of the paper, along the thread direction of the paper, the paper is easier to fold, and the die-pressing pressure can be smaller, while perpendicular to the thread direction of the paper, the paper is more difficult to fold and the die-pressing pressure can be increased locally; the toughness of cardboard is poor, if there is no surface coating, special attention should be paid to the die-cutting effect; die-cutting requires controlling the cutting interval, and according to the feeding rate of the printing equipment, ensure that the printed graphic style is complete after cutting; the pressure standard is to adjust the overall pressure until 70%-80% of the tangent can be cut off.

[0056] S6. Bag gluing: It is necessary to select appropriate adhesive according to the paper bag material; the adhesive needs to ensure the position is standardized to avoid a large adhesive coating range.

[0057] S7, handbag forming: the handbag forming work needs to be completed according to the paper bag layout after printing; the handbag forming pressing pressure is adjusted according to the folding model, and each folding step needs to be flattened during the forming process. After the paper bag is completely formed, it is pressed by a pressure device, and the pressing time is maintained in the range of 3-5 seconds.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A process for producing a transparent packaging paper bag, characterized in that: The following steps are involved: S1. Product design: select and design accurate graphic styles through computers, determine the graphic styles at the printing position of transparent packaging paper bags, select printing equipment parameters, plan the specifications of the raw paperboard of transparent packaging paper bags, and the layout of the raw paperboard; S2. Overall printing operation: set the printing intensity during the printing process to control the thickness of the printing ink layer, avoid ink streaking, control the overall printing direction of the device, make the printing direction correspond to the size of the paper bag mouth, upper tongue and bottom, control the printing color difference, and improve the printing effect and graphic style integrity; S3. Handmade bag lamination: Choose the appropriate lamination glue, especially when subsequent concave and convex processing is required; Control the laminating speed and select the appropriate glue application amount according to the vehicle speed; Products that need to be laminated must be completely dry after printing before lamination can be carried out. Products that have just been laminated also need to be left for a period of time before rolling, cutting, or embossing. If the powder is too large during printing, it is necessary to remove the powder before lamination; S4. Surface finishing after lamination: hot stamping, embossing and glazing processes can be selected, and one or more processes can be selected and used in combination according to needs; Hot stamping processing requires selecting the printing position and making hot stamping selections based on the printed graphic style; The concave and convex processing needs to be selected according to the lamination status, and the position is determined according to the printing position, and used in conjunction with the hot stamping or printing process; Glazing processing needs to be selected according to printing, hot stamping and embossing processing technology to make the printed graphic style more complete, and it is necessary to fully cover the graphic style of printing, hot stamping and embossing processing technology; S5. Die-cutting of paper bags: Choose the correct template; Control the working pressure well; the die-cutting edge should not have burrs, the dark line should be clear and easy to fold, but the line should be avoided; Considering the characteristics of paper, along the direction of the paper's threads, the paper is easier to fold, so the molding pressure can be smaller. On the other hand, perpendicular to the direction of the paper's threads, the paper is more difficult to fold, so the molding pressure can be increased locally. The toughness of cardboard is poor. If there is no surface coating, special attention should be paid to the die-cutting effect; S6. Bag pasting: Choose the right adhesive according to the paper bag material; S7, handbag forming: the handbag forming work needs to be completed according to the layout of the paper bag paper after printing.

2. A process for producing a transparent packaging paper bag according to claim 1, characterized in that: The printing equipment parameters described in S1 include: Front baffle: controls the paper feed height, the gap is set to 1.5 times the paper thickness, the distance is moderate; Side baffle: adjust the length of paper feeding, the specification on the side close to the aligning plate is 2mm more; Side paper aligning: adjust the length of the paper feeding to align the paper, and the aligning board is inserted 10-20mm into the side baffle; Rear baffle: adjust the paper feeding width of the cardboard. The distance between the rear baffle and the front baffle is 3mm larger than the width of the cardboard. Paper feed roller: adjust the paper feeding distance of the cardboard. The distance adjustment should not exceed or be less than 0.1mm of the cardboard thickness after being crushed by the paper feed roller. In special circumstances, it can be adjusted according to the specific situation.

3. A process for producing a transparent packaging paper bag according to claim 2, characterized in that: The printing process described in S2 includes: Printing operators should pay attention to the control of ink balance, the status of equipment and printing equipment, and color difference; When printing, pay attention to the printing position up and down and back and forth to ensure the size of the paper bag mouth, upper tongue and bottom; If the product needs to be laminated or processed after printing, you must also pay attention to controlling the thickness of the ink layer as much as possible, reducing the use of additives, and minimizing the amount of powder spraying.

4. A process for producing a transparent packaging paper bag according to claim 3, characterized in that: The laminating glue in S3 includes any one of water-based laminating glue, ink laminating glue, and hot-melt laminating glue; The amount of glue applied is controlled according to the speed at which the printing equipment conveys the paper bag, and the printed graphic pattern position needs to be completely coated; After the lamination printing is completed, it is necessary to wait for 10-30 minutes, and the drying time after lamination printing is changed according to the adaptability of the actual ambient temperature; Specifically, you need to wait for 30 minutes after the lamination is completed in an environment of 15°C, 20 minutes after the lamination is completed in an environment of 25°C, and 10 minutes after the lamination is completed in an environment of 35°C.

5. A process for producing a transparent packaging paper bag according to claim 4, characterized in that: When performing surface finishing operations as described in S4: The equipment must press the paper bags tightly to ensure the surface flatness of the hot stamped products; Post-printing treatment of the surface of hot stamping products (lamination, oiling, etc.); The hot stamping suitability of the anodized aluminum used; The condition of the hot stamping plates and hot stamping machines.

6. A process for producing a transparent packaging paper bag according to claim 5, characterized in that: Die cutting in S5 requires controlling the cutting interval according to the feeding rate of the printing equipment to ensure the integrity of the printed graphic style after cutting; The pressure standard is to adjust the overall pressure until 70%-80% of the tangent line can be cut.

7. A process for producing a transparent packaging paper bag according to claim 6, characterized in that: In S6, the adhesive needs to ensure the position specification to avoid a large area of ​​adhesive coating.

8. The process for producing a transparent packaging paper bag according to claim 7, characterized in that: The pressing pressure of the handbag forming is adjusted according to the folding model. At the same time, each folding step needs to be flattened during the forming process. After the paper bag is completely formed, it is pressed by a pressure device, and the pressing time is maintained in the range of 3-5 seconds.

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