CN110696537A - Production process for improving integrity and overprinting precision of hollowed-out area of local transfer aluminized paper - Google Patents
Production process for improving integrity and overprinting precision of hollowed-out area of local transfer aluminized paper Download PDFInfo
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- CN110696537A CN110696537A CN201910980731.XA CN201910980731A CN110696537A CN 110696537 A CN110696537 A CN 110696537A CN 201910980731 A CN201910980731 A CN 201910980731A CN 110696537 A CN110696537 A CN 110696537A
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- reticulate pattern
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/175—Transfer using solvent
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Abstract
The invention provides a production process capable of improving the integrity and overprint precision of a hollowed area of a local transfer aluminized paper, which comprises a manufacturing process of a transfer film, a compounding process of the transfer film and base paper and a peeling process of a transfer base film, wherein in the compounding process of the transfer film and the base paper, an anilox roller for gluing the transfer film is manufactured by the following method: (1) firstly, measuring the expansion and contraction variation of the transfer film and base paper in the compounding process, and determining the effective compounding area of the anilox roller and the transfer film; (2) and arranging a reticulate pattern area and a mirror surface area in the effective composite area according to the design requirement, wherein the reticulate pattern density, the cell depth and the width of the reticulate pattern area are designed according to gradient gradual change according to the distance between the reticulate pattern area and the edge of the mirror surface area, and the closer to the edge of the mirror surface area, the denser the reticulate pattern, the lower the cell depth and the smaller the width. The local transfer aluminized paper obtained by the process has the advantages of regular edges of hollow areas, no sawtooth edges and aluminum falling phenomena, stable overprinting effect and excellent printing adaptability.
Description
Technical Field
The invention relates to a production process of transfer paper, in particular to a production process of local transfer aluminum-plated paper, and more particularly relates to a production process capable of improving the integrity of a hollow area and overprint precision of the local transfer aluminum-plated paper.
Background
The local transfer of the aluminized paper is to transfer part of the aluminum layer on the vacuum aluminized film to the paper, so that part of the area of the paper is covered with the aluminized layer, and part of the area is not covered with the aluminized layer; the area which is not covered with the aluminum plating layer is a hollow area, and the area can be printed with patterns or hollowed out for bar code printing according to application requirements. The production process of the currently circulated and applied local transfer aluminized paper generally comprises the following steps: coating a transfer coating on a base film, then vacuum aluminizing the transfer coating or vacuum aluminizing the transfer coating after mould pressing, locally aluminizing the aluminized layer, then coating glue on the residual aluminized layer, then compounding the transfer film coated with the glue with paper and stripping the base film to form the transfer aluminized paper with a partially hollow part; this production technology is because of transfer coating and base film adhesive force are loose, and it is easy to cause the transfer coating to be destroyed to wash aluminium, leads to the radium-shine face of paper incomplete after the transfer, and in addition, it is big to wash aluminium control degree of difficulty, and the aluminium process of washing that increases can lead to product cost higher.
In view of the above, another production process appearing in recent years is to perform local mirror surface treatment on a sizing anilox roller to make the anilox part sized and the mirror surface part not sized, when a full-plate aluminized transfer film is compounded with paper through the sizing roller and a base film is peeled, an aluminized layer coated with glue is transferred onto the paper along with the glue, and an aluminized layer without glue is peeled along with the base film to form a partially hollowed laser or optical silver transfer paper; because the edge trimming effect of the paper at the hollowed-out position after the base film is peeled off in the process is extremely poor, the aluminum layer burr phenomenon caused by obvious poor edge transfer can be caused, and the hidden trouble of missing printing caused by reverse adhesion and ink piling of a rubber cloth in the printing process can be easily caused; in addition, because the base film is generally made of plastic films such as PET (polyethylene terephthalate), OPP (oriented polypropylene) and the like, the films have certain elasticity, are deformed under the influence of tension of each stroke in the compounding process, and need to be controlled by local positioning precision, the production efficiency of the process is low, and the vehicle speed is not more than 80 m/min.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a production process capable of improving the integrity and overprint precision of a hollowed-out area of local transfer aluminized paper.
In order to achieve the purpose, the production process for improving the integrity and overprint precision of the hollowed area of the local transfer aluminized paper comprises a manufacturing process of a transfer film, a compounding process of the transfer film and base paper and a peeling process of a transfer base film, and is characterized in that: in the compounding process of the transfer film and the base paper, the anilox roller for gluing the transfer film is prepared by the following method:
(1) measuring the width and the version width of the prepared transfer film, compounding the transfer film and base paper in a full-page manner, peeling off the base film, measuring the width and the version width of the transfer paper obtained after peeling off the base film, calculating the transverse and longitudinal stretching variable quantity of the transfer film and the base paper after compounding, and determining the effective compounding area of the anilox roller and the transfer film according to the variable quantity and the specification of finished paper;
(2) and arranging a reticulate pattern area and a mirror surface area in the effective composite area according to the design requirement, wherein the reticulate pattern density, the cell depth and the width of the reticulate pattern area are designed according to gradient gradual change according to the distance between the reticulate pattern area and the edge of the mirror surface area, and the closer to the edge of the mirror surface area, the denser the reticulate pattern, the lower the cell depth and the smaller the width.
Preferably, in the above production process, in the effective composite area of the anilox roller and the transfer film, the anilox region with 0-1mm distance from the edge of the mirror region has an anilox of 300-400 mesh, a cell width of 60-100um and a cell depth of 13-30 um; a mesh area 1-3mm away from the edge of the mirror area, wherein the mesh is 250-300 meshes, the cell width is 100-125um, and the cell depth is 30-40 um; the reticulate pattern area with the reticulate pattern more than 3mm from the edge of the mirror surface area has the reticulate pattern of 150-250 meshes, the cell width of 125-170 mu m and the cell depth of 40-55 mu m.
Preferably, in the production process, the glue used in the compounding process of the transfer film and the base paper comprises the following components in percentage by mass: methyl methacrylate, butyl acrylate, acrylic acid, water, ammonia water and an anionic emulsifier =22-28:3-7:8-12:55-65:0.2-0.4: 0.05-0.15.
Preferably, in the above production process, in the step of combining the transfer film and the base paper, when the transfer film is sized, the sizing amount of each anilox region of the anilox roller is as follows: the reticulate pattern is a reticulate pattern area with 300-400 meshes, and the sizing amount is 1.5-3g/m2(ii) a The reticulate pattern is a reticulate pattern area with 250-300 meshes, and the gluing amount is 3-5g/m2(ii) a The reticulate pattern is 150-250 meshes, and the sizing amount is 5-8g/m2。
Preferably, in the production process, the speed of compounding the transfer film and the base paper is 100-120 m/min.
Preferably, in the above production process, the preparation process of the transfer film includes applying a transfer coating layer on the base film and vacuum aluminizing on the transfer coating layer.
Preferably, in the above production process, the preparation process of the transfer film includes coating a transfer coating on the base film, molding the transfer layer, and vacuum aluminizing the molded transfer coating.
Preferably, in the above production process, the base film is a PET or OPP film.
Compared with the prior art of applying glue by local mirror surface treatment of an anilox roller, the production process for improving the integrity and overprint precision of the hollowed area of the local transfer aluminized paper has the following advantages:
1. the effective composite area of the anilox roller and the transfer film is limited in a targeted manner according to the stretching rule of the plastic film, so that the hollow pattern after transfer and peeling corresponds to the preset pattern position, and the problem of poor positioning overprinting precision after composite transfer caused by stress deformation of the plastic film can be effectively avoided and solved.
2. According to the distance from the edge of the mirror surface area, the gradient gradual change design is carried out on the reticulate pattern density, the cell depth and the width of the reticulate pattern area, the problem that the peeling is uneven due to the overflow and scattering during glue compounding can be effectively solved, and therefore the integrity of the hollowed area of the transfer aluminum-plated paper is guaranteed.
3. By combining the high-precision positioning size design and the high-precision gluing quantity gradient control of the anilox roller, the problems of inaccurate positioning overprinting precision and low production efficiency caused by all raw materials and process control defects can be avoided, and the speed-up and efficiency-increasing gain is realized.
Drawings
FIG. 1 is a schematic cross-sectional view of the partially transferred aluminized paper of the present invention.
Fig. 2 is a schematic cross-sectional structure of a transfer film used for partially transferring the aluminized paper of fig. 1.
FIG. 3 is a schematic view of the structure of the developed surface of an anilox roll for applying glue to a transfer film according to the present invention.
Fig. 4 is an enlarged schematic view of the region a of fig. 3.
Detailed Description
As shown in fig. 1, the local transfer aluminized paper of the present invention sequentially comprises a transfer coating 1 with a laser effect, an aluminized layer 2, an adhesive layer 3 and base paper 4 from top to bottom, and the production process of the local transfer aluminized paper comprises a manufacturing process of a transfer film, a compounding process of the transfer film and the base paper and a stripping process of a transfer base film:
1. manufacturing process of transfer film (conventional manufacturing process): coating a resin layer with a release effect on a transfer base film 5 (a PET film or an OPP film); carrying out mould pressing on the resin layer to enable the resin layer to have a laser effect; vacuum aluminizing the molded layer to form the transfer film shown in FIG. 2;
2. compounding the transfer film and the base paper:
(1) manufacturing an anilox roller:
a. measuring the width and the version width of the prepared transfer film, compounding the transfer film and base paper in a full-page manner, peeling off the base film, measuring the width and the version width of the transfer paper obtained after peeling off the base film, calculating the longitudinal and transverse expansion variation before and after compounding the transfer film and the base paper, and determining the effective compounding area of the anilox roller and the transfer film according to the variation and the specification of finished paper;
if a transfer film with the specification of 730 (width) x530 (plate width) mm is adopted, the transfer film is peeled off after being compounded with the base paper in a full plate manner, the specification of the paper after the transfer is completely measured to be 727x531mm, and the specification can be calculated to obtainThe transverse variation (730-; if the paper specification of the designed partial transfer aluminized paper finished product is 700x500mm, according to the conclusion, the effective composite area of the plate roller and the transfer film is 702.87x499.1mm2(700 +700x4.1 permillage =702.87 in the transverse direction, and 500-;
b. arranging a reticulate pattern area 6 and a mirror area 7 in the effective composite area according to the design requirement, wherein the reticulate pattern density, the cell depth and the width of the reticulate pattern area are designed in a gradient gradual change mode according to the distance between the reticulate pattern area and the edge of the mirror area, and the closer to the edge of the mirror area, the denser the reticulate pattern, the lower the depth and the smaller the width;
the design of the embodiment is that the reticulate pattern area with 0-1mm distance from the edge of the mirror surface area has 350 meshes, 65um cell width and 20um cell depth; a reticulate pattern area 1-3mm away from the edge of the mirror surface area, wherein the reticulate pattern is 280 meshes, the width of a mesh hole is 105um, and the depth of the mesh hole is 32 um; a mesh area which is more than 3mm away from the edge of the mirror surface area, wherein the mesh is 200 meshes, the width of a mesh hole is 140um, and the depth of the mesh hole is 50um, as shown in figures 3 and 4;
(2) gluing and compounding:
adopting glue with the mass ratio of methyl methacrylate, butyl acrylate, acrylic acid, water, ammonia water and alkyl alcohol ether sulfate =25:5:10:60:0.3:0.1, and the glue amount of the reticulate pattern area passing through the reticulate pattern roller and having 350 meshes is 2.5g/m2The sizing amount of the reticulate pattern area with 280 meshes is 4.5g/m2The coating amount of the reticulate pattern area with 200 meshes is 6.5g/m2Gluing the transfer film, compounding with base paper and drying;
3. a peeling process of the transfer base film: and (3) peeling a base film from the transfer aluminum-plated paper compounded with the transfer film, transferring the aluminum-plated layer coated with glue and attached to the reticulate region of the reticulate roller onto base paper along with the glue, and peeling the aluminum-plated layer without glue and attached to the mirror surface region of the reticulate roller along with the base film to form the local transfer aluminum-plated paper with the laser effect as shown in figure 1.
The transfer paper has good peeling effect, the transfer of the rubberizing area of the transfer film is complete, the edges of the positioning hollow-out area are neat after peeling, the phenomena of jagged edges and aluminum falling are avoided, the effective laser transfer area of the finished paper is 700x500mm, the registration error of the hollow-out positioning area is less than or equal to 0.1mm, the overprinting effect is stable, and the transfer paper has excellent printing adaptability; the production by using the process parameters reasonably controls the drying performance of the glue, the speed of the vehicle can reach 120m/min, the gluing area is stable in the running process of the equipment, and no glue overflow phenomenon occurs.
The above is only a specific description of an embodiment of the production process capable of improving the integrity of the hollowed-out area of the local transfer aluminized paper and the overprint precision, but the embodiment is not intended to limit the protection scope of the present invention, and equivalent implementations or modifications that do not depart from the technical scheme of the present invention, such as changes in specifications of the transfer film and the paper or changes in process parameters of the transfer film and the base paper compounding process, should be included in the scope of the present invention.
Claims (8)
1. The utility model provides an improve local production technology that shifts aluminized paper fretwork regional integrality and overprint precision, includes the preparation process of transfer film, the compound process of transfer film and body paper and the peeling off process of transfer base film which characterized in that: in the compounding process of the transfer film and the base paper, the anilox roller for gluing the transfer film is prepared by the following method:
(1) measuring the width and the version of the prepared transfer film, compounding the transfer film and base paper in a full-page manner, peeling off the base film, measuring the width and the version of the transfer paper obtained after peeling off the base film, calculating the horizontal and longitudinal expansion variation of the compound transfer film and base paper, and determining the effective compound area of the anilox roller and the transfer film according to the variation and the specification of the finished transfer paper;
(2) and arranging a reticulate pattern area and a mirror surface area in the effective composite area according to the design requirement, wherein the reticulate pattern density, the cell depth and the width of the reticulate pattern area are designed according to gradient gradual change according to the distance between the reticulate pattern area and the edge of the mirror surface area, and the closer to the edge of the mirror surface area, the denser the reticulate pattern, the lower the cell depth and the smaller the width.
2. The production process for improving the integrity and overprint precision of the hollowed-out area of the local transfer aluminized paper according to claim 1, characterized in that: in the effective composite area of the anilox roller and the transfer film, an anilox area which is 0-1mm away from the edge of the mirror area is provided, wherein the anilox is 300-400 meshes, the mesh width is 60-100um, and the mesh depth is 13-30 um; a mesh area 1-3mm away from the edge of the mirror area, wherein the mesh is 250-300 meshes, the cell width is 100-125um, and the cell depth is 30-40 um; the reticulate pattern area with the reticulate pattern more than 3mm from the edge of the mirror surface area has the reticulate pattern of 150-250 meshes, the cell width of 125-170 mu m and the cell depth of 40-55 mu m.
3. The production process for improving the integrity and overprint precision of the hollowed-out area of the local transfer aluminized paper according to claim 1 or 2, characterized in that: the glue used in the compounding process of the transfer film and the base paper comprises the following components in percentage by mass: methyl methacrylate, butyl acrylate, acrylic acid, water, ammonia water and an anionic emulsifier =22-28:3-7:8-12:55-65:0.2-0.4: 0.05-0.15.
4. The process according to any one of claims 1 to 3, wherein the process comprises the following steps: in the compounding process of the transfer film and the base paper, when the transfer film is glued, the gluing amount of each anilox area of the anilox roller is as follows: the reticulate pattern is a reticulate pattern area with 300-400 meshes, and the sizing amount is 1.5-3g/m2(ii) a The reticulate pattern is a reticulate pattern area with 250-300 meshes, and the gluing amount is 3-5g/m2(ii) a The reticulate pattern is 150-250 meshes, and the sizing amount is 5-8g/m2。
5. The production process for improving the integrity and overprint precision of the hollowed-out area of the local transfer aluminized paper according to claim 4, characterized in that: the speed of compounding the transfer film and the base paper is 100-120 m/min.
6. The production process for improving the integrity and overprint precision of the hollowed-out area of the local transfer aluminized paper according to claim 5, characterized in that: the preparation process of the transfer film comprises the steps of coating a transfer coating on a base film and vacuum aluminizing on the transfer coating.
7. The production process for improving the integrity and overprint precision of the hollowed-out area of the local transfer aluminized paper according to claim 5, characterized in that: the preparation process of the transfer film comprises the steps of coating a transfer coating on a base film, carrying out mould pressing on the transfer coating and carrying out vacuum aluminizing on the transfer coating after mould pressing.
8. The production process for improving the integrity and overprint precision of the hollowed-out area of the local transfer aluminized paper according to claim 6 or 7, characterized in that: the base film is a PET or OPP film.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112721488A (en) * | 2020-12-25 | 2021-04-30 | 浙江亚欣包装材料有限公司 | Local transfer process |
| CN113715469A (en) * | 2020-05-26 | 2021-11-30 | 应急管理部上海消防研究所 | Sizing roller, composite fabric and manufacturing method thereof |
| CN114472222A (en) * | 2022-01-14 | 2022-05-13 | 增和包装股份有限公司 | Back coating roller, roller processing method and cigarette label processing technology for controlling back coating in segmented mode |
| CN114953820A (en) * | 2022-04-20 | 2022-08-30 | 东莞市美盈森环保科技有限公司 | Manufacturing process of package with two metal effects |
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