CN112030607B - Laser paper manufacturing technology - Google Patents
Laser paper manufacturing technology Download PDFInfo
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- CN112030607B CN112030607B CN202010940927.9A CN202010940927A CN112030607B CN 112030607 B CN112030607 B CN 112030607B CN 202010940927 A CN202010940927 A CN 202010940927A CN 112030607 B CN112030607 B CN 112030607B
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- layer
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- laser paper
- transfer
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/42—Applications of coated or impregnated materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/02—Metal coatings
- D21H19/08—Metal coatings applied as vapour, e.g. in vacuum
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Abstract
The invention relates to a laser paper manufacturing process, which is characterized in that a reusable mother film is manufactured, the mother film is compounded with paper after secondary coating and secondary aluminum plating are carried out on the mother film under the condition that the mother film is coated, molded and plated for one time, and the transfer coating used for the secondary coating has lower viscosity than that of a compound adhesive layer, so that the mother film can be peeled off and reused, the time required by the processes and the requirements on related equipment are reduced, the production space required by laser paper manufacturing can be reduced, a downstream manufacturer can directly purchase a finished product of the mother film from an upstream manufacturer to produce laser paper, the production cost of the laser paper is greatly reduced, the production cost can be reduced by about 70%, and the production benefit of the laser paper is improved.
Description
Technical Field
The invention relates to the technical field of production and manufacturing of packaging paper, in particular to a laser paper manufacturing process.
Background
The laser paper is used as a packaging material and is widely applied to packaging of high-grade commodities such as cigarettes, wine, tea, cosmetics and the like. Currently, the laser paper is mainly manufactured by a method of laminating and transferring, as shown in fig. 1, generally including the following steps:
(1) Coating and drying a base film 1' (usually a PET film) by a coater to form a coating layer 2' on the base film 1 ';
(2) Performing die pressing on the semi-finished product prepared in the step (1) through a die pressing machine to form a pattern on the coating layer 2';
(3) Aluminizing the coating layer 2 'subjected to die pressing in the step (2) to form an aluminized layer 3';
(4) Gluing the aluminum coated layer 3 'formed in the step (3), covering a glue layer 4', and then compounding the paper 5 'through the glue layer 4';
(5) And (3) peeling off the base film 1' to enable the coating layer 2' and the aluminum-plated layer 3' to be compositely transferred to the paper 5' along with the glue layer 4' in the step (4).
In the above manufacturing process of the laser paper, the base film 1' is usually disposable, and the base film 1' is discarded after the peeling of the base film 1' in the step (5) is completed. At present, in the process of continuously producing laser paper, the number of waste base films is considerable on one hand, and after the new base films are replaced every time on the other hand, the base films are required to be repeatedly coated and molded by the step (1) and the step (2), if the utilization rate of the base films can be improved, the output of the waste base films can be reduced, the time of the step (1) and the step (2) can be greatly reduced, and the production cost of the laser paper is greatly reduced.
Disclosure of Invention
The invention aims to solve the problem of providing a laser paper manufacturing process, which can simplify the manufacturing process of the laser paper, shorten the production time of the laser paper, greatly reduce the production cost of the laser paper and improve the production benefit of the laser paper. The technical scheme is as follows:
a laser paper manufacturing process is characterized by comprising the following steps:
(1) Preparing a mother film:
(1-1) coating and drying a base film through a coating machine to form a coating layer on the base film;
(1-2) performing die pressing on the semi-finished product prepared in the step (1-1) through a die pressing machine to form a pattern on the coating layer;
(1-3) aluminizing the coating layer subjected to die pressing in the step (1-2) to form a first aluminized layer, so as to finish the manufacture of the mother film;
(2) Coating transfer paint on the mother film prepared in the step (1) through a coating machine to form a transfer layer and drying the transfer layer;
(3) Aluminizing the transfer layer dried in the step (2) to form a second aluminized layer;
(4) Gluing the second aluminum-plated layer formed in the step (3), covering a glue layer, wherein the viscosity of the glue layer is greater than that of the transfer layer, and compounding the second aluminum-plated layer to the paper through the glue layer;
(5) Stripping the mother film to enable the transfer layer and the second aluminum-plated layer to be compositely transferred to the paper along with the glue layer in the step (4) to form laser paper;
(6) And (5) repeating the steps (2) to (5) on the peeled mother film, and repeatedly manufacturing the laser paper on the basis of the mother film.
The base film is generally a corona-treated PET film.
The coating used for coating in the step (1) has the characteristics of high temperature resistance (generally over 155 ℃) and solvent resistance, and currently, an aluminizing coating, a two-component coating, a UV coating and the like used in the prior art can be selected according to specific production requirements.
The transfer coating in the step (2) has the following characteristics: (1) has sufficient film-forming properties by itself; (2) the first aluminum plating layer has good stripping property; (3) the paint has the characteristics of solvent resistance and high temperature resistance; (4) The viscosity is less than that of the glue layer adopted in the step (4). For example, urethane resin, acrylic resin, cellulose resin, vinyl chloride-vinyl acetate resin, and the like can be used, and the transfer coating material used may be modified as needed or may be added with an appropriate auxiliary agent.
The mother film stripped in the step (6) has good stripping performance between the transfer coating and the first aluminum plating layer, and patterns of the mold pressing layer are still remained on the first aluminum plating layer after stripping, so that the mother film can be reused, the service life of the mother film is prolonged, and the mother film is discarded after being used for many times until the mother film does not meet production requirements any more.
As a preferable embodiment of the present invention, the dry weight of the coating of the transfer layer in the step (2) is 0.06 to 1.2 g/m 2 . In the step (2), the transfer coating is coated on the mother film, and in the actual coating process, the laser effect is reduced and the phenomenon of pattern is generated due to the fact that the transfer layer is coated too thickly; if the coating of the transfer layer is too thin, although the laser effect of the finished laser paper is good, the transfer layer has high bonding degree with the mother film and poor stripping performance, and the mother film is difficult to strip perfectly. By multiple applicationExperiments and experimental effect comparison, 0.06 to 1.2 g/m 2 The dry amount of the coating as a transfer layer is, in particular, 0.2 g/m 2 The finished laser paper has good laser effect and is easy to peel off.
Compared with the prior art, the invention has the following advantages:
(1) According to the laser paper manufacturing process, the reusable mother film is manufactured, the mother film is compounded with paper after secondary coating and secondary aluminum plating are carried out on the mother film under the condition that the mother film is coated, molded and plated for one time, and the mother film can be peeled off and reused due to the fact that the viscosity of a transfer coating used for the secondary coating is lower than that of a compound adhesive layer;
(2) The mother film does not need to carry out the processes of primary coating, die pressing and primary aluminum plating again in the process of repeated use, the time required by the processes and the requirements on related equipment are reduced, the production space required by the laser paper can be reduced, downstream manufacturers can directly purchase the finished product of the mother film from upstream manufacturers to carry out the production of the laser paper, the production cost of the laser paper is greatly reduced, about 70 percent of the production cost can be reduced, and the production benefit of the laser paper is improved;
(3) Because the mother membrane can use many times, the quantity of the produced abandonment base film of prior art reduces substantially, greatly reduced handle the required various costs of abandonment base film among the prior art, further improved radium-shine paper's productivity effect.
Drawings
FIG. 1 is a composite schematic view of a prior art laser paper manufacturing process;
fig. 2 is a composite schematic view of the laser paper manufacturing process of the present invention.
Detailed Description
The following further describes the preferred embodiments of the present invention with reference to the accompanying drawings.
Example one
As shown in fig. 2, a laser paper manufacturing process includes the following steps:
(1) Preparing a mother film 1:
(1-1) coating and drying the base film 101 by a coating machine to form a coating layer 102 on the base film 101; the coating used for the coating layer 102 is selected according to the specific requirements of laser paper making, as long as the coating of the coating layer has the characteristics of high temperature resistance (generally, the temperature is required to be more than 155 ℃) and solvent resistance, and the embodiment adopts isocyanate modified acrylic resin;
(1-2) molding the semi-finished product prepared in the step (1-1) by a molding press to form a pattern on the coating layer 102;
(1-3) aluminizing the coating layer 102 which is subjected to die pressing in the step (1-2) to form a first aluminized layer 103, so as to finish the manufacture of the mother film 1;
(2) Coating transfer paint on the mother film 1 prepared in the step (1) through a coating machine to form a transfer layer 2 and drying; the viscosity of the transfer coating is only required to be less than that of the adhesive layer 4, and the embodiment provides a formula of the transfer coating, specifically, for every 100 parts by weight of the modified acrylic resin, 60 parts by weight of ethanol, 240 parts by weight of ethyl acetate, 20 parts by weight of propylene glycol methyl ether, and 0.8 part by weight of 2,4,6, tris (dimethylaminomethyl) phenol are added as a curing agent, and the prepared transfer coating meets the requirements of the invention on the transfer coating, and the viscosity of the transfer coating is less than that of the composite adhesive layer 4 commonly used in the prior art in the technical field; the coating process of the transfer coating adopts a 250-mesh anilox roller for coating, the coating speed of a coating machine adopts 100m/min, and the coating moisture content is 4 g/m 2 (ii) a After the coating of the transfer coating is finished, the transfer coating enters an oven, the oven with 5 groups of electric heating wires adopted in the embodiment is sequentially provided with drying temperatures of 90 ℃, 130 ℃, 145 ℃, 150 ℃ and 130 ℃ according to the conveying direction of the membrane material, and the coating dry weight of the final transfer layer 2 is 0.85 g/m 2
(3) Aluminizing the transfer layer 2 dried in the step (2) to form a second aluminized layer 3;
(4) Gluing the second aluminum-plated layer 3 formed in the step (3), covering a glue layer 4, and then compounding the second aluminum-plated layer 3 to the paper 5 through the glue layer 4;
(5) Stripping the mother film 1 to enable the transfer layer 2 and the second aluminum-plated layer 3 to be compositely transferred to the paper 5 along with the glue layer 4 in the step (4) to form laser paper;
(6) And (5) repeating the steps (2) to (5) on the peeled mother film 1, and repeatedly manufacturing the laser paper on the basis of the mother film 1.
Example two
In the case that all other steps are the same as in the first embodiment, the difference is that: in this example, the coating speed of the coater in the step (2) was 110m/min, and the moisture content was 3.5 g/m 2 The final dry coating weight of the transfer layer 2 was 0.2 g/m 2 。
EXAMPLE III
In the case that the other steps are the same as the first embodiment, the difference is that: in this example, the coating speed of the coater in the step (2) was 120m/min, and the moisture content was 3 g/m 2 The final dry coating weight of the transfer layer 2 was 0.09 g/m 2 。
Example four
In the case that the other steps are the same as the first embodiment, the difference is that: in this embodiment, in the step (2), an oven with 3 groups of heating wires is used for drying the transfer layer 2, and the drying temperatures of 90 ℃, 150 ℃ and 130 ℃ are sequentially set according to the conveying direction of the film material, so that the coating dry weight of the transfer layer 2 is finally 0.95 g/m 2 。
EXAMPLE five
In the case that the other steps are the same as those in example four, the difference is that: in this example, the coating speed of the coater in the step (2) was 110m/min, and the moisture content was 3.5 g/m 2 The final dry weight of the transfer layer 2 applied was 0.15 g/m 2 。
EXAMPLE six
In the case where the other steps are the same as in example four, the difference is that: in the present example, the coating speed of the coater in the step (2) was 120m/min, and the moisture content was 3 g/m 2 The final dry coating weight of the transfer layer 2 was 0.07 g/m 2 。
EXAMPLE seven
In the case that other steps are the same as in the first embodiment, the regionThe difference lies in that: in this embodiment, an oven is used for drying the transfer layer 2 in the step (2), the drying temperatures of 90 ℃, 130 ℃ and 150 ℃ are sequentially set according to the conveying direction of the film material, and the final coating dry weight of the transfer layer 2 is 0.54 g/m 2 。
Example eight
In the case that the other steps are the same as those of the seventh embodiment, the difference is that: in the present example, the coating speed of the coater in the step (2) was 110m/min, and the moisture content was 3.5 g/m 2 The final dry coating weight of the transfer layer 2 was 0.09 g/m 2 。
Example nine
In the case that the other steps are the same as those of the seventh embodiment, the difference is that: in the present example, the coating speed of the coater in the step (2) was 120m/min, and the moisture content was 3 g/m 2 The final dry coating weight of the transfer layer 2 was 0.06 g/m 2 。
The following table is a table for evaluating the manufacturing process of the laser paper and the finished product of the laser paper in the first to ninth examples by coating speed (unit: m/min), and coating moisture (unit: g/m) 2 ) And drying temperature (unit: "c", the number between the numbers indicates the number of heating wire groups in the oven), the coating dry amount (unit: g/m 2 ) And comprehensively comparing the stripping effect of the mother film 1 (evaluated by using excellent, good, medium and poor properties) and the finished product laser effect of the laser paper (evaluated by using excellent, good, medium and poor properties):
| examples | Coating speed | Moisture content of coating | Drying temperature | Dry amount of coating | Effect of peeling mother film | Laser effect |
| A | 100 | 4 | 90-130-145-150-130 | 1.2 | Superior food | Difference (D) |
| II | 110 | 3.5 | 90-130-145-150-130 | 0.2 | Good wine | Superior food |
| III | 120 | 3 | 90-130-145-150-130 | 0.09 | In | Superior food |
| Fourthly | 100 | 4 | 90-150-130 | 0.95 | Superior food | In |
| Five are | 110 | 3.5 | 90-150-130 | 0.15 | In | Superior food |
| Six ingredients | 120 | 3 | 90-150-130 | 0.07 | Difference (D) | Superior food |
| Seven-piece | 100 | 4 | 90-130-150 | 0.54 | Good wine | Good wine |
| Eight-bar type | 110 | 3.5 | 90-130-150 | 0.09 | In | Superior food |
| Nine-piece | 120 | 3 | 90-130-150 | 0.06 | Difference between | Superior food |
From the above table, the laser paper prepared in the second embodiment has the highest comprehensive evaluation, and not only the master film has a good peeling effect during the production process, but also the finished laser paper has a good laser effect. In addition, the laser paper prepared in the seventh embodiment has good evaluation on the mother film peeling effect and the laser effect of the finished laser paper.
Furthermore, it should be noted that the names of the parts of the embodiments described in the present specification may be different, and the equivalent or simple changes of the structures, the features and the principles described in the present patent concept are included in the protection scope of the present patent. Various modifications, additions and substitutions for the specific embodiments described may occur to those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (2)
1. A laser paper manufacturing process is characterized by comprising the following steps:
(1) Preparing a mother film:
(1-1) coating and drying a base film through a coating machine to form a coating layer on the base film;
(1-2) performing die pressing on the semi-finished product prepared in the step (1-1) through a die pressing machine to form a pattern on the coating layer;
(1-3) aluminizing the coating layer subjected to die pressing in the step (1-2) to form a first aluminized layer, so as to finish the manufacture of the mother film;
(2) Coating transfer paint on the mother film prepared in the step (1) through a coating machine to form a transfer layer and drying the transfer layer; the transfer coating has film forming property and stripping property with the first aluminum plating layer;
(3) Aluminizing the transfer layer dried in the step (2) to form a second aluminized layer;
(4) Gluing the second aluminum-plated layer formed in the step (3), covering a glue layer, wherein the viscosity of the glue layer is greater than that of the transfer layer, and then compounding the second aluminum-plated layer to the paper through the glue layer;
(5) Stripping the mother film to enable the transfer layer and the second aluminum-plated layer to be compositely transferred to the paper along with the glue layer in the step (4) to form laser paper;
(6) And (6) repeating the steps (2) to (5) on the peeled mother film, and repeatedly manufacturing the laser paper on the basis of the mother film.
2. The laser paper making process of claim 1, wherein: the dry coating weight of the transfer layer in the step (2) is 0.06 to 1.2 g/m 2 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010940927.9A CN112030607B (en) | 2020-09-09 | 2020-09-09 | Laser paper manufacturing technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010940927.9A CN112030607B (en) | 2020-09-09 | 2020-09-09 | Laser paper manufacturing technology |
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| CN112030607A CN112030607A (en) | 2020-12-04 |
| CN112030607B true CN112030607B (en) | 2022-11-22 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE384818B (en) * | 1973-03-21 | 1976-05-24 | Ziristor Ab | WAY TO TRANSFER DECOR, SPEC. METAL GLOSS, FOR A PACKAGING MATERIAL PATH |
| JPH01198398A (en) * | 1988-02-04 | 1989-08-09 | Honshu Paper Co Ltd | Transfer metallized paper and manufacture thereof |
| CN102431338A (en) * | 2011-08-31 | 2012-05-02 | 福建泰兴特纸有限公司 | Polyethylene glycol terephthalate (PET) multiple aluminum plating transfer film and manufacture process thereof |
| CN107031223B (en) * | 2017-05-05 | 2024-03-19 | 苏州苏大维格科技集团股份有限公司 | Deep-grain pattern transfer film and manufacturing method thereof |
| CN109572262B (en) * | 2018-12-18 | 2021-03-26 | 东莞光群雷射科技有限公司 | Laser mother film for film pressure transfer film and preparation method and application method thereof |
| CN111636250B (en) * | 2020-05-22 | 2022-10-28 | 南京金陵金箔集团股份有限公司 | Production process of environment-friendly tipping paper |
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