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Thermal laminating film for printing matters

A thermal lamination, vinyl acetate technology, applied in the direction of film/sheet adhesive, adhesive type, adhesive, etc., can solve the problems of expensive materials, unsatisfactory printing layer adhesion, etc., to achieve excellent The effect of adhesion, prevention of color change, and simple production process

Inactive Publication Date: 2019-04-16
惠州艺都文化用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesion of these products to print layers printed with water-based inks is not satisfactory
In addition, when forming the adhesive layer, there are problems that extrusion coating is required at a high temperature of 180° C. to 270° C. and that materials for forming the adhesive layer are expensive.

Method used

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  • Thermal laminating film for printing matters
  • Thermal laminating film for printing matters
  • Thermal laminating film for printing matters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～12

[0075] A polyester (PET) film was used as the base layer. Table 1 shows the thickness of the base layer. The base layer was subjected to corona discharge treatment to make the surface tension 50 dyne, and then a material for forming an adhesive layer was coated on the base layer with a bar coater. As the adhesive layer material, the emulsions shown in Table 1 were used. The base layer coated with the adhesive layer material was dried in a drying oven at 70° C. for 3 minutes, thereby preparing a thermal lamination film.

[0076] Ready to print digitally printed with water-based inks. The water-based ink is produced by Zhuhai Huacai Printing Consumables Co., Ltd. (product name: "Huacai"). The printed matter is printed in black, red, cyan, green, sky blue, pink and yellow.

[0077] The laminating equipment used the YIDU SAILS-320 model, to which thermal lamination films and prints were supplied at a speed of 4 m per minute, and thermal lamination was performed at 100°C. As a ...

Embodiment 13～21

[0089] A laminated composite was prepared by the same method as in Example 1, except that a biaxially oriented polypropylene (BOPP) film with a thickness of 12 μm was used as the base layer and the experimental conditions were as shown in Table 2. Table 2 shows the evaluation of the adhesive force of the mounted composite.

[0090] Table 2

[0091]

[0092] As can be seen from Table 2, the thermal lamination films of Examples 13 to 21 have excellent adhesion to the printed matter.

Embodiment 22～23

[0094] As the base layer, a PET film having a thickness of 52 μm was used. A polyurethane (PU)-based adhesive was coated with a thickness of 2 μm on the base layer and dried to form a primer layer. PU adhesive is an ordinary water-based PU adhesive generally used as a primer when dry laminating or preparing food packaging materials, and its viscosity is 70-100cps. The adhesive layer materials shown in Table 3 were coated on the primer layer with a bar coater and dried to prepare a thermal lamination film.

[0095] Other experimental conditions were the same as in Example 1, and the thermal lamination film and the printed matter were thermally laminated at 100° C. to form a lamination composite. The adhesive force of the mounted composite was evaluated, and the results are shown in Table 3.

[0096] table 3

[0097]

[0098] As can be seen from Table 3, the thermal lamination films of Examples 22 to 23 have excellent adhesion to the printed matter.

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Abstract

The present invention relates to a laminating film, in particular to a thermal laminating film. The thermal laminating film is compounded to printing matters digitally printed with aqueous ink in a thermal laminating mode, and comprises a base layer and an adhesive layer; 70% or above of the adhesive layer is composed of, by weight, thermoplastic materials made of polyvinyl acetate, vinyl acetate-ethylene copolymer and a mixture of polyvinyl acetate and vinyl acetate-ethylene copolymer; the weight content of vinyl acetate in the vinyl acetate ethylene copolymer is 50% or above. The thermal laminating film has excellent adhesion to the printing matters digitally printed with the aqueous ink. A process of bonding the thermal laminating film to the printing matters can be automated by using existing thermal laminating equipment, through automation, the laminating speed can be increased, the labor is saved, and therefore the productivity is improved.

Description

technical field [0001] The present invention relates to a thermal lamination film for printed matter. In particular, the present invention relates to a thermal lamination film for lamination to digitally printed prints with water-based inks. Background technique [0002] Digital printing inks (toners) include solvent-based and solvent-free types. Solvent-based inks include water-based inks, organic solvent-based inks, and vegetable oil-based inks. In the ink industry, inks using only organic solvents are sometimes referred to as solvent inks. Solvent-free inks include hot-melt sol-state inks, solid inks, liquid inks, and gel-state UV-curable inks. [0003] Printing inks are mainly composed of colorants, binders, carrier liquids, and additives. [0004] The colorant is a component for expressing color, and as the colorant, a dye (dyestuff) and a pigment (pigment) are contained. Dyes are pigments that dissolve in water to maintain a monomolecular state, while pigments are...

Claims

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Application Information

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IPC IPC(8): C09J7/30C09J7/25C09J7/24C09J7/29
CPCC09J2423/106C09J2431/00C09J2467/006C09J7/24C09J7/25C09J7/29C09J7/30C09J2301/162C08J5/18C09J131/04C08J7/0427
Inventor 李玉成彭雅丽韩秀英
Owner 惠州艺都文化用品有限公司
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