CN109203751B - Printing method of embossed laser packaging paper - Google Patents
Printing method of embossed laser packaging paper Download PDFInfo
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- CN109203751B CN109203751B CN201811206908.2A CN201811206908A CN109203751B CN 109203751 B CN109203751 B CN 109203751B CN 201811206908 A CN201811206908 A CN 201811206908A CN 109203751 B CN109203751 B CN 109203751B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
- B41M5/03—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
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- Making Paper Articles (AREA)
- Laminated Bodies (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention belongs to the technical field of packaging materials, and particularly relates to a printing method of embossed laser packaging paper. The method comprises the following steps: coating a UV coating laser imaging layer on the whole breadth or a specific position of the BOPP film; printing a pattern or character film on the surface of the BOPP film; irradiating by using a UV lamp, and drying the UV ink on the BOPP film; preparing the relief printing coating, and coating the relief printing coating on the surface of the PET film, wherein the dry coating amount is 1.3-1.7g/m2(ii) a Two surfaces of the packaging paper are respectively and closely combined with a BOPP film and a PET film, and a laser imaging layer and patterns/characters are transferred to the packaging paper by a film pressing machine; separating the packaging paper from the BOPP film and the PET film respectively; and (3) putting the obtained packaging paper into a relief mould, and pressing and forming. The embossed laser packaging paper prepared by the method has the beneficial effects of soft touch feeling of the printed embossment and good printing effect.
Description
Technical Field
The invention belongs to the technical field of packaging materials, and particularly relates to a printing method of embossed laser packaging paper.
Background
The laser printing film is widely applied to the packaging industry, has novel and bright appearance effect and high-technology anti-counterfeiting function compared with other products in the packaging industry, and is called as the forefront technical product in the world packaging printing industry. The application field of the laser printing film is very wide, and the laser printing film is mainly used for occasions such as high-grade packing boxes, high-grade cigarette packing boxes, laminating films, medicine and cosmetic packages and the like. Patent CN103612498 discloses a method for producing gravure steel plate UV cold transfer laser printing paper, which comprises the steps of coating a layer of water-based coating on a BOPP basal membrane, drying, aluminizing and molding to form a prefabricated BOPP aluminized basal membrane with holographic laser effect; coating UV gloss oil on the prefabricated PET base film with the printing pattern, and drying; and (3) impressing the BOPP basal membrane and the PET basal membrane under the action of a gravure roller, impressing the BOPP basal membrane and the PET basal membrane by the gravure roller after two-pass ultraviolet light rapid curing, cooling and stripping the BOPP basal membrane to prepare the holographic laser transfer membrane with the printing pattern.
The texture of the packaging paper embossment printed by the packaging paper embossment laser printing method in the prior art is not soft enough, and the printing effect is not good enough.
Therefore, new techniques are needed to improve the deficiencies of the prior art.
Disclosure of Invention
In order to overcome the defects of the technology, the invention provides the packaging paper embossment laser printing method which is soft in embossment texture and good in printing effect.
A printing method of embossed laser packaging paper comprises the following steps:
(1) coating a UV coating laser imaging layer on the whole breadth or a specific position of the BOPP film;
(2) printing a pattern or character film on the surface of the BOPP film;
(3) irradiating by using a UV lamp, and drying the UV ink on the BOPP film;
(4) mixing and stirring 4-6 parts of carboxymethyl cellulose, 2-4 parts of polyurethane matte resin, 12-16 parts of methylene bisacrylamide, 0.2-0.4 part of curing agent, 0.3-0.6 part of pH regulator, 0.4-0.6 part of flatting agent and 30-40 parts of water for 70-90min at the temperature of 68-72 ℃ and the rotating speed of 60-80r/min, and naturally cooling to room temperature to obtain the relief printing coating;
(5) coating the relief printing coating on the surface of the PET film by adopting a single-side coating mode, clamping edges in the middle during coating, controlling the width of the clamping edges at one side to be less than 0.7mm, and controlling the dry coating amount to be 1.3-1.7g/m2；
(6) Two surfaces of the packaging paper are respectively and closely combined with a BOPP film and a PET film, and a laser imaging layer and patterns/characters are transferred to the packaging paper by a film pressing machine;
(7) separating the packaging paper from the BOPP film and the PET film respectively;
(8) and (3) putting the obtained packaging paper into a relief mould, and pressing and forming.
In the preferred embodiment of the invention, the UV lamp in the step (3) is exposed for 1/1400 seconds under the irradiation of 3.6KW UV lamp light, and the UV ink on the BOPP film is dried.
In the preferred embodiment of the invention, the leveling agent in the step (4) is BYK-342.
In a preferred embodiment of the present invention, the pH adjusting agent in step (4) is trimethylamine.
In a preferred embodiment of the present invention, the relief printing coating in step (4) is: 4 parts of carboxymethyl cellulose, 2 parts of polyurethane matte resin, 12 parts of methylene bisacrylamide, 0.2 part of curing agent, 0.3 part of pH regulator, 0.4 part of flatting agent and 30 parts of water.
In a preferred embodiment of the present invention, the relief printing coating in step (4) is: 6 parts of carboxymethyl cellulose, 4 parts of polyurethane matte resin, 16 parts of methylene bisacrylamide, 0.4 part of curing agent, 0.6 part of pH regulator, 0.6 part of flatting agent and 40 parts of water.
In a preferred embodiment of the present invention, the relief printing coating in step (4) is: 5 parts of carboxymethyl cellulose, 3 parts of polyurethane matte resin, 14 parts of methylene bisacrylamide, 0.3 part of curing agent, 0.45 part of pH regulator, 0.5 part of flatting agent and 35 parts of water.
In the preferred embodiment of the present invention, the amount of the relief printing coating in the step (5) is 1.53g/m in dry coating2。
Advantageous effects
The invention discloses a printing method of embossed laser packaging paper, which comprises the following steps: coating a laser imaging layer, printing a film, drying UV ink, preparing a relief printing coating, coating the relief printing coating, pressing the film, separating the film from wrapping paper, and molding the relief die, and has the advantages of soft touch of the printed relief and good printing effect.
Detailed Description
The present invention will be described in detail below with reference to examples to enable those skilled in the art to better understand the present invention, but the present invention is not limited to the following examples.
Unless otherwise defined, terms (including technical and scientific terms) used herein should be construed to have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Example 1
A printing method of embossed laser packaging paper specifically comprises the following steps:
(1) coating a laser imaging layer: and coating a UV coating laser imaging layer on the whole width or a specific position of the width on the BOPP film.
(2) And (3) film printing, namely printing patterns or characters on the BOPP film in the step (1).
(3) Drying the UV ink, and exposing for 1/1400 seconds under the irradiation of 3.6KW UV light to dry the UV ink on the BOPP film;
(4) preparing a relief printing coating: adding 4 parts of carboxymethyl cellulose, 2 parts of polyurethane matte resin, 12 parts of methylene bisacrylamide, 0.2 part of curing agent, 0.3 part of pH regulator, 0.4 part of flatting agent and 30 parts of water into a container, moving the container into a digital display speed measurement constant-temperature magnetic stirrer, stirring and reacting for 70-90 minutes at 68-72 ℃ and at the rotating speed of 60-80r/min, taking out the container, naturally cooling the materials in the container to room temperature, and then charging to obtain the relief printing slurry;
(5) coating relief printing paint: coating the relief printing coating prepared in the step (4) on a PET film by adopting a single-side coating mode, clamping edges in the middle during coating, controlling the width of the clamping edges at one side to be less than 0.7mm, and controlling the dry coating amount to be 1.3g/m2；
(6) Film pressing, wherein two sides of the paper are respectively attached to a BOPP film and a PET film, and a laser imaging layer and patterns/characters are transferred to packaging paper by a film pressing machine;
(7) separating the packaging paper in the step (6) from the BOPP film and the PET film respectively;
(8) putting the packaging paper in the step (7) into a relief mould, and carrying out pressure forming;
wherein, the leveling agent in the step 4 is BYK-342.
Wherein the pH regulator in the step 4 is trimethylamine.
Example 2
A printing method of embossed laser packaging paper specifically comprises the following steps:
(1) coating a laser imaging layer: and coating a UV coating laser imaging layer on the whole width or a specific position of the width on the BOPP film.
(2) And (3) film printing, namely printing patterns or characters on the BOPP film in the step (1).
(3) The UV ink was dried and exposed to light of 3.6KW UV light for 1/1400 seconds to dry the UV ink on the BOPP film.
(4) Preparing a relief printing coating: adding 6 parts of carboxymethyl cellulose, 4 parts of polyurethane matte resin, 16 parts of methylene bisacrylamide, 0.4 part of curing agent, 0.6 part of pH regulator, 0.6 part of flatting agent and 40 parts of water into a container, moving the container into a digital display speed measurement constant-temperature magnetic stirrer, stirring and reacting for 70-90 minutes at 68-72 ℃ and at the rotating speed of 60-80r/min, taking out the container, naturally cooling the materials in the container to room temperature, and then charging to obtain the relief printing slurry;
(5) coating relief printing paint: coating the relief printing coating prepared in the step (4) on a PET film by adopting a single-side coating mode, clamping edges in the middle during coating, controlling the width of the clamping edges at one side to be less than 0.7mm, and controlling the dry coating amount to be 1.53g/m2。
(6) And (3) film pressing, wherein two sides of the paper are respectively tightly attached to the BOPP film and the PET film, and the laser imaging layer and the patterns/characters are transferred to the packaging paper through a film pressing machine.
(7) And (4) separating the packaging paper in the step (6) from the BOPP film and the PET film respectively.
(8) And (5) putting the packaging paper in the step (7) into a relief mould, and pressing and forming.
Wherein, the leveling agent in the step 4 is BYK-342.
Wherein the pH regulator in the step 4 is trimethylamine.
Example 3
A printing method of embossed laser packaging paper specifically comprises the following steps:
(1) coating a laser imaging layer: and coating a UV coating laser imaging layer on the whole width or a specific position of the width on the BOPP film.
(2) And (3) film printing, namely printing patterns or characters on the BOPP film in the step (1).
(3) The UV ink was dried and exposed to light of 3.6KW UV light for 1/1400 seconds to dry the UV ink on the BOPP film.
(4) Preparing a relief printing coating: adding 5 parts of carboxymethyl cellulose, 3 parts of polyurethane matte resin, 14 parts of methylene bisacrylamide, 0.3 part of curing agent, 0.45 part of pH regulator, 0.5 part of flatting agent and 35 parts of water into a container, moving the container into a digital display speed measurement constant-temperature magnetic stirrer, stirring and reacting for 70-90 minutes at 68-72 ℃ and at the rotating speed of 60-80r/min, taking out the container, naturally cooling the materials in the container to room temperature, and then charging to obtain the relief printing slurry;
(5) coating relief printing paint: coating the relief printing coating prepared in the step (4) on a PET film by adopting a single-side coating mode, clamping edges in the middle during coating, controlling the width of the clamping edges at one side to be less than 0.7mm, and controlling the dry coating amount to be 1.7g/m2。
(6) And (3) film pressing, wherein two sides of the paper are respectively tightly attached to the BOPP film and the PET film, and the laser imaging layer and the patterns/characters are transferred to the packaging paper through a film pressing machine.
(7) And (4) separating the packaging paper in the step (6) from the BOPP film and the PET film respectively.
(8) And (5) putting the packaging paper in the step (7) into a relief mould, and pressing and forming.
Wherein, the leveling agent in the step 4 is BYK-342.
Wherein the pH regulator in the step 4 is trimethylamine.
The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments may be made in the present invention in addition to the above embodiments. It will be understood by those skilled in the art that various changes, substitutions of equivalents, and alterations can be made without departing from the spirit and scope of the invention.
Claims (7)
1. A printing method of embossed laser packaging paper is characterized by comprising the following steps:
(1) coating a UV coating laser imaging layer on the whole breadth or a specific position of the BOPP film;
(2) printing a pattern or character film on the surface of the BOPP film;
(3) irradiating by using a UV lamp, and drying the UV ink on the BOPP film;
(4) mixing and stirring 4-6 parts of carboxymethyl cellulose, 2-4 parts of polyurethane matte resin, 12-16 parts of methylene bisacrylamide, 0.2-0.4 part of curing agent, 0.3-0.6 part of pH regulator, 0.4-0.6 part of flatting agent and 30-40 parts of water for 70-90min at the temperature of 68-72 ℃ and the rotating speed of 60-80r/min, and naturally cooling to room temperature to obtain the relief printing coating;
(5) coating the relief printing coating on the surface of the PET film by adopting a single-side coating mode, clamping edges in the middle during coating, controlling the width of the clamping edges at one side to be less than 0.7mm, and controlling the dry coating amount to be 1.3-1.7g/m2；
(6) Two surfaces of the packaging paper are respectively and closely combined with a BOPP film and a PET film, and a laser imaging layer and patterns/characters are transferred to the packaging paper by a film pressing machine;
(7) separating the packaging paper from the BOPP film and the PET film respectively;
(8) and (5) putting the packaging paper obtained in the step (7) into a relief mould, and pressing and forming.
2. The printing method of the embossed laser packaging paper as claimed in claim 1, wherein the printing method comprises the following steps: and (3) performing illumination by using a UV lamp, namely performing exposure for 1/1400 seconds under the illumination of 3.6KW UV lamp light, and drying the UV ink on the BOPP film.
3. The printing method of the embossed laser packaging paper as claimed in claim 1, wherein the printing method comprises the following steps: and (4) the leveling agent is BYK-342.
4. The printing method of the embossed laser packaging paper as claimed in claim 1, wherein the printing method comprises the following steps: the relief printing coating in the step (4) is as follows: 4 parts of carboxymethyl cellulose, 2 parts of polyurethane matte resin, 12 parts of methylene bisacrylamide, 0.2 part of curing agent, 0.3 part of PH regulator, 0.4 part of flatting agent and 30 parts of water.
5. The printing method of the embossed laser packaging paper as claimed in claim 1, wherein the printing method comprises the following steps: the relief printing coating in the step (4) is as follows: 6 parts of carboxymethyl cellulose, 4 parts of polyurethane matte resin, 16 parts of methylene bisacrylamide, 0.4 part of curing agent, 0.6 part of PH regulator, 0.6 part of flatting agent and 40 parts of water.
6. The printing method of the embossed laser packaging paper as claimed in claim 1, wherein the printing method comprises the following steps: the relief printing coating in the step (4) is as follows: 5 parts of carboxymethyl cellulose, 3 parts of polyurethane matte resin, 14 parts of methylene bisacrylamide, 0.3 part of curing agent, 0.45 part of pH regulator, 0.5 part of flatting agent and 35 parts of water.
7. The printing method of the embossed laser packaging paper as claimed in claim 1, wherein the printing method comprises the following steps: the dry coating amount of the relief printing coating in the step (5) is 1.53g/m2。
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| CN201811206908.2A CN109203751B (en) | 2018-10-17 | 2018-10-17 | Printing method of embossed laser packaging paper |
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