CN114055906A - Flexible package manufacturing method for relief printing - Google Patents
Flexible package manufacturing method for relief printing Download PDFInfo
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- CN114055906A CN114055906A CN202111449208.8A CN202111449208A CN114055906A CN 114055906 A CN114055906 A CN 114055906A CN 202111449208 A CN202111449208 A CN 202111449208A CN 114055906 A CN114055906 A CN 114055906A
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- film
- laminating
- flexible package
- laminating film
- relief printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0036—Heat treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/14—Printing or colouring
- B32B38/145—Printing
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
Abstract
A flexible package manufacturing method of relief printing is characterized in that the flexible package is formed by combining a first laminating film, a second laminating film, a third laminating film and an adhesive layer, wherein the second laminating film is arranged between the first laminating film and the third laminating film, and the adhesive layer is arranged between two adjacent films. The flexible packaging film has the advantages that the relief printing plate making cost is low, the plate making period is short, the relief printing process is utilized to realize small order making on the basis of not changing the performance of the existing flexible packaging film, the reverse process production mode different from the traditional process that printing is carried out firstly and then compounding is carried out is adopted, the mode that the film is compounded and then printed is carried out firstly, the integral production period of the product is shortened, and a certain time is won for the popularization of new products researched and developed by clients at the earlier stage. Meanwhile, the invention adopts the relief printing process, applies the reverse gloss oil coating, silk screen printing and gold stamping effects which are special for the relief printing process on the product, and can improve the characteristics and the grade of the package.
Description
Technical Field
The invention relates to a flexible package manufacturing method, in particular to a flexible package manufacturing method for letterpress printing, and belongs to the technical field of plastic films.
Background
In the age of the product packaging mode changing day by day, the development investment of new products and the packaging design innovation of the new products are continuously promoted by customers. In the trial stage of a new product, due to the fact that the production quantity of the trial packaging films is small, a customer expects that the matched packaging delivery time is short, and the production cost needs to be controlled. The traditional flexible package production is generally realized by manufacturing a special gravure plate roller, then printing, and then compounding various functional materials layer by using an adhesive. The traditional flexible package manufacturing method has high gravure plate making cost, long plate making period and long film production period, and is difficult to meet the requirements of customers, especially when the customers need to finish innovative high-end package by adopting some special processes, such as reverse gloss oil coating, silk screen printing and gold stamping effects, the traditional flexible package manufacturing method cannot be realized on the gravure printing process.
Disclosure of Invention
In order to solve the defects, the invention provides a flexible package manufacturing method for relief printing.
In order to achieve the purpose, the invention adopts the technical scheme that: a flexible package manufacturing method of relief printing is disclosed, wherein the flexible package is formed by combining a first laminating film, a second laminating film, a third laminating film and an adhesive layer, the second laminating film is positioned between the first laminating film and the third laminating film, the adhesive layer is positioned between two adjacent films, and the flexible package is manufactured by adopting the following steps:
(1) carrying out surface corona treatment on the first laminating film, and coating an adhesive on the corona-treated surface;
(2) bonding the second laminating film with the corona treatment surface of the first laminating film, and laminating by pressure to obtain a first composite film;
(3) curing the first composite film obtained in the step (2) at constant temperature;
(4) combining and compounding the third laminating film and the cured first composite film, and curing at constant temperature after compounding to obtain a printing composite film;
(5) and (4) performing letterpress UV ink printing on the outer surface of the first laminating film to obtain a flexible package of letterpress printing.
Preferably, the first laminated film in step (1) is one or more of a polyethylene terephthalate film, a biaxially oriented polypropylene film, synthetic paper or a polypropylene pearlized film.
Preferably, the glue in the step (1)The adhesive is a solvent-free polyester adhesive or a solvent adhesive, wherein the gluing amount of the solvent-free polyester adhesive is 1.4-1.8 g/m2The gluing amount of the solvent type adhesive is 2.5-3.5 g/m2。
Preferably, the second laminated film of step (2) is a polypropylene pearlized film.
Preferably, the first composite film of the step (3) is cured at 40-45 ℃ for 24 hours.
Preferably, after the first composite film and the third laminating film in the step (4) are compounded, the first composite film and the third laminating film are cured at 40-45 ℃ for 24 hours.
Preferably, the third laminated film of step (4) is a polyethylene film.
Preferably, the third laminated film of step (4) is a polyethylene film and an aluminum foil.
Preferably, the polyethylene film is glued in advance, the aluminum foil and the glued polyethylene film are pressed together under pressure, and the third pressed film is obtained after the pressing and the constant-temperature curing.
Preferably, the polyethylene film and the aluminum foil are pressed under the condition that the unreeling tension is less than or equal to 40N, and are cured for 24 hours at the temperature of 40-45 ℃ after being pressed.
The flexible packaging film has the advantages that the relief printing plate making cost is low, the plate making period is short, the relief printing process is utilized to realize small order making on the basis of not changing the performance of the conventional flexible packaging film, the production cost of samples or small-batch products is favorably reduced, the reverse process production mode of compounding before printing is adopted, the overall production period of the products is shortened, and a certain time is won for the popularization of new products developed by clients at the early stage. Meanwhile, the invention adopts the relief printing process, applies the reverse gloss oil coating, silk screen printing and gold stamping effects which are special for the relief printing process on the product, and can improve the characteristics and the grade of the package.
Drawings
FIG. 1 is a schematic representation of the three-layer structure of the present invention.
Fig. 2 is a schematic diagram of a four-layer structure of the present invention.
In the figure: 1-a first laminate film; 2-a second laminate film; 3-a third laminate film; 4-adhesive layer.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A flexible package manufacturing method of relief printing comprises the following steps:
(1) performing surface corona treatment on the first laminating film 1, and coating an adhesive on the corona-treated surface, wherein the adhesive is a solvent-free polyester adhesive, and the gluing amount is 1.6g/m2；
(2) Bonding the second laminating film 2 with the corona treatment surface of the first laminating film 1, and laminating by pressure to obtain a first composite film;
(3) carrying out constant-temperature curing on the first composite film obtained in the step (2) at 40 ℃ for 24 hours;
(4) combining and compounding the third laminating film 3 and the cured first composite film through an adhesive, and curing at the constant temperature of 40 ℃ for 24 hours after compounding to obtain a printing composite film;
(5) and (3) performing letterpress UV ink printing on the outer surface of the first laminating film 1 to obtain a flexible package of letterpress printing.
The first laminating film 1 is a polyethylene terephthalate film (PET), the second laminating film 2 is a polypropylene pearlized film, and the third laminating film 3 is a polyethylene film.
Example 2
A flexible package manufacturing method of relief printing comprises the following steps:
(1) performing surface corona treatment on the first laminating film 1, and coating an adhesive on the corona-treated surface, wherein the adhesive is a solvent-free polyester adhesive, and the gluing amount is 1.8g/m2；
(2) Bonding the second laminating film 2 with the corona treatment surface of the first laminating film 1, and laminating by pressure to obtain a first composite film;
(3) carrying out constant-temperature curing on the first composite film obtained in the step (2) at 45 ℃ for 24 hours;
(4) combining and compounding the third laminating film 3 and the cured first composite film through an adhesive, and curing at the constant temperature of 45 ℃ for 24 hours after compounding to obtain a printing composite film;
(5) and (3) performing letterpress UV ink printing on the outer surface of the first laminating film 1 to obtain a flexible package of letterpress printing.
The first laminated film 1 is a biaxially oriented polypropylene (BOPP) film, the second laminated film 2 is a polypropylene pearlized film, and the third laminated film 3 is a polyethylene film.
Example 3
A flexible package manufacturing method of relief printing comprises the following steps:
(1) performing surface corona treatment on the first laminating film 1, and coating an adhesive on the corona-treated surface, wherein the corona treatment value is higher than 52 dynes, the adhesive is a solvent adhesive, and the gluing amount is 2.5g/m2；
(2) Bonding the second laminating film 2 with the corona treatment surface of the first laminating film 1, and laminating by pressure to obtain a first composite film;
(3) carrying out constant-temperature curing on the first composite film obtained in the step (2) at 43 ℃ for 24 hours;
(4) combining and compounding the third laminating film 3 and the cured first composite film through an adhesive, and curing at the constant temperature of 43 ℃ for 24 hours after compounding to obtain a printing composite film;
(5) and (3) performing letterpress UV ink printing on the outer surface of the first laminating film 1 to obtain a flexible package of letterpress printing.
Wherein, the first laminating film 1 is a polyethylene terephthalate film (PET), the second laminating film 2 is a polypropylene pearlized film, and the third laminating film 3 is formed by compounding a polyethylene film and an aluminum foil. The polyethylene film is glued in advance, the aluminum foil and the glued polyethylene film are pressed under the unreeling tension of 40N, and the constant temperature curing is carried out for 24 hours at the temperature of 40 ℃ after the pressing.
Example 4
A flexible package manufacturing method of relief printing comprises the following steps:
(1) performing surface corona treatment on the first laminating film 1, and coating an adhesive on the corona-treated surface, wherein the corona treatment value is higher than 52 dynes, the adhesive is a solvent adhesive, and the gluing amount is 3.5g/m2；
(2) Bonding the second laminating film 2 with the corona treatment surface of the first laminating film 1, and laminating by pressure to obtain a first composite film;
(3) carrying out constant-temperature curing on the first composite film obtained in the step (2) at 43 ℃ for 24 hours;
(4) combining and compounding the third laminating film 3 and the cured first composite film through an adhesive, and curing at the constant temperature of 43 ℃ for 24 hours after compounding to obtain a printing composite film;
(5) and (3) performing letterpress UV ink printing on the outer surface of the first laminating film 1 to obtain a flexible package of letterpress printing.
Wherein, the first laminating film 1 is a polyethylene terephthalate film (PET), the second laminating film 2 is a polypropylene pearlized film, and the third laminating film 3 is formed by compounding a polyethylene film and an aluminum foil. The polyethylene film is glued in advance, the aluminum foil and the glued polyethylene film are pressed under the condition of unreeling tension of 40N, and after pressing, constant-temperature curing is carried out for 24 hours at the temperature of 45 ℃.
Example 5
A flexible package manufacturing method of relief printing comprises the following steps:
(1) performing surface corona treatment on the first laminating film 1, and coating an adhesive on the corona-treated surface, wherein the corona treatment value is higher than 52 dynes, the adhesive is a solvent-free polyester adhesive, and the gluing amount is 1.4g/m2；
(2) Bonding the second laminating film 2 with the corona treatment surface of the first laminating film 1, and laminating by pressure to obtain a first composite film;
(3) carrying out constant-temperature curing on the first composite film obtained in the step (2) at 43 ℃ for 24 hours;
(4) combining and compounding the third laminating film 3 and the cured first composite film through an adhesive, and curing at the constant temperature of 43 ℃ for 24 hours after compounding to obtain a printing composite film;
(5) and (3) performing letterpress UV ink printing on the outer surface of the first laminating film 1 to obtain a flexible package of letterpress printing.
Wherein, the first laminating film 1 is a polyethylene terephthalate film (PET), the second laminating film 2 is a polypropylene pearlized film, and the third laminating film 3 is formed by compounding a polyethylene film and an aluminum foil. The polyethylene film is glued in advance, the aluminum foil and the glued polyethylene film are pressed under the unreeling tension of 38N, and after pressing, constant temperature curing is carried out for 24 hours at the temperature of 43 ℃.
As shown in fig. 1 to 2, the flexible packaging film of the present invention is provided in a multi-layered structure. The outer layer of the three-layer structure packaging film is a polyethylene terephthalate (PET) film with good heat resistance, high mechanical strength resistance and excellent chemical performance, and can be formed by compounding one or more than one of a biaxially oriented polypropylene film (BOPP), synthetic paper or a polypropylene pearlized film with high transparency and glossiness in order to improve the adhesion strength of ink patterns of letterpress printing. The middle layer adopts the polypropylene pearlized film, can increase the visual effect of packaging film, promotes the grade of whole packing. The inner layer is an anti-corrosion heat-sealing layer, the modified Polyethylene (PE) film with acid and alkali resistance, corrosion resistance and high heat-sealing strength is adopted, and the composite adhesive material is a special solvent-free medium-resistant functional adhesive for food grade, so that the strength of each layer of composite film is ensured, and a certain blocking effect can be achieved. The application can adopt solvent-based adhesive, can adjust the type of adhesive according to the actual production needs, and the practicality is better. The one deck aluminium foil is increased on three layer construction membrane's basis to four layer construction packing, can improve the bulk strength of packaging film effectively, is applicable to the packing of most food and daily use chemicals article, and this application includes but not limited to three-layer or four-layer structure.
The invention realizes the small order production by utilizing the relief printing process on the basis of not changing the performance of the existing flexible packaging film because the relief printing plate making cost is lower and the plate making period is shorter, thereby being beneficial to reducing the production cost of samples or small-batch products. Meanwhile, the invention adopts the relief printing process, applies the reverse gloss oil coating, silk screen printing and gold stamping effects which are special for the relief printing process on the product, can better improve the characteristics and the grade of the finished product bag or the packaging film which is made of the flexible packaging film, and increases the market competitiveness and the attraction of the finished product bag or the packaging film.
Claims (10)
1. A flexible package manufacturing method of relief printing is characterized in that the flexible package is formed by combining a first laminating film, a second laminating film, a third laminating film and an adhesive layer, the second laminating film is positioned between the first laminating film and the third laminating film, the adhesive layer is positioned between two adjacent films, and the flexible package is manufactured by adopting the following steps:
(1) carrying out surface corona treatment on the first laminating film, and coating an adhesive on the corona-treated surface;
(2) bonding the second laminating film with the corona treatment surface of the first laminating film, and laminating by pressure to obtain a first composite film;
(3) curing the first composite film obtained in the step (2) at constant temperature;
(4) combining and compounding the third laminating film and the cured first composite film, and curing at constant temperature after compounding to obtain a printing composite film;
(5) and (4) performing letterpress UV ink printing on the outer surface of the first laminating film to obtain a flexible package of letterpress printing.
2. The method for manufacturing a flexible package of relief printing according to claim 1, wherein the first laminating film of step (1) is one or more of a polyethylene terephthalate film, a biaxially oriented polypropylene film, a synthetic paper or a polypropylene pearlized film.
3. The method for manufacturing a flexible package by relief printing according to claim 1, wherein the adhesive in the step (1) is a solvent-free polyester adhesive or a solvent-based adhesive, wherein the gluing amount of the solvent-free polyester adhesive is 1.4 to 1.8g/m2The gluing amount of the solvent type adhesive is 2.5-3.5 g/m2。
4. The method for manufacturing a flexible package by letterpress printing as claimed in claim 1, wherein the second laminating film of the step (2) is a polypropylene pearlized film.
5. The method for manufacturing a flexible package for relief printing according to claim 1, wherein the first composite film of the step (3) is cured at 40 to 45 ℃ for 24 hours.
6. The method for manufacturing a flexible package by relief printing according to claim 1, wherein the first composite film and the third laminating film in the step (4) are cured at 40 to 45 ℃ for 24 hours after being laminated.
7. The method for manufacturing a relief printing flexible package according to claim 1 or 6, wherein the third laminated film of the step (4) is a polyethylene film.
8. The method for manufacturing a relief printing flexible package according to claim 1 or 6, wherein the third laminated film of the step (4) is a polyethylene film and an aluminum foil.
9. The method of claim 8, wherein the polyethylene film is pre-sized, and the aluminum foil and the sized polyethylene film are pressure-laminated, and then cured at a constant temperature after the lamination to obtain a third laminated film.
10. The method for manufacturing a flexible package by relief printing as claimed in claim 8 or 9, wherein the polyethylene film and the aluminum foil are laminated under an unwinding tension of 40N or less, and cured at 40-45 ℃ for 24 hours after lamination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111449208.8A CN114055906A (en) | 2021-11-30 | 2021-11-30 | Flexible package manufacturing method for relief printing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111449208.8A CN114055906A (en) | 2021-11-30 | 2021-11-30 | Flexible package manufacturing method for relief printing |
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| Publication Number | Publication Date |
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| CN114055906A true CN114055906A (en) | 2022-02-18 |
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| CN202111449208.8A Pending CN114055906A (en) | 2021-11-30 | 2021-11-30 | Flexible package manufacturing method for relief printing |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081749A (en) * | 2017-12-22 | 2018-05-29 | 澧县津溥包装制品有限责任公司 | A kind of printing process of plastic packaging bag |
| CN108454201A (en) * | 2018-04-10 | 2018-08-28 | 广州市瑞高包装工业有限公司 | Flexible package composite material and preparation method thereof and packaging tube |
| CN113103786A (en) * | 2021-04-15 | 2021-07-13 | 广州永新包装有限公司 | Pre-compounded aluminum foil surface gravure printing method |
| CN113195229A (en) * | 2019-02-28 | 2021-07-30 | 株式会社爱赛璐 | Packaging film, film bag and manufacturing method thereof |
-
2021
- 2021-11-30 CN CN202111449208.8A patent/CN114055906A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081749A (en) * | 2017-12-22 | 2018-05-29 | 澧县津溥包装制品有限责任公司 | A kind of printing process of plastic packaging bag |
| CN108454201A (en) * | 2018-04-10 | 2018-08-28 | 广州市瑞高包装工业有限公司 | Flexible package composite material and preparation method thereof and packaging tube |
| CN113195229A (en) * | 2019-02-28 | 2021-07-30 | 株式会社爱赛璐 | Packaging film, film bag and manufacturing method thereof |
| CN113103786A (en) * | 2021-04-15 | 2021-07-13 | 广州永新包装有限公司 | Pre-compounded aluminum foil surface gravure printing method |
Non-Patent Citations (1)
| Title |
|---|
| 王建清，陈金周: "《包装材料学》", 北京印刷工业出版社 * |
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