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Pre-coating film and preparation method for the same

A pre-coating, flexible coating technology, applied in chemical instruments and methods, film/flake adhesives, coatings, etc. problem, to achieve the effect of simple operation, lower cost and enhanced adhesion

Active Publication Date: 2012-10-17
张家港保税区康得菲尔实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the increasingly widely used fully automatic high-speed film coating process, as well as products that undergo rolling line and concave-convex treatment after coating, ordinary pre-coating films will show quality problems such as blistering and delamination, which seriously affect the yield and work of the film coating. efficiency

Method used

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  • Pre-coating film and preparation method for the same
  • Pre-coating film and preparation method for the same
  • Pre-coating film and preparation method for the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Such as image 3 As shown, Step 1: provide a biaxially stretched polyester layer or a biaxially stretched nylon layer as the substrate layer 11 .

[0067] Step 2: Coating the flexible coating 12 comprising a mixture of polyurethane dispersion and curing agent on the first surface 111 of the substrate layer 11 by using a coating device to form the substrate 1 .

[0068] Step 3: On the second surface 112 of the substrate layer 11, apply the polyethyleneimine aqueous solution prepared according to the above ratio and dry it with a drying device, so that the polyvinyl chloride imine is solidified on the substrate layer 11 to form the intermediate layer 2 on the second surface 112 of the

[0069] Since the polyester layer and the stretched nylon layer are all polar materials, the intermediate layer 2 can be directly coated on the second surface 112 of the substrate layer 11, and the gap between the second surface 112 and the intermediate layer 2 can be guaranteed after dryi...

Embodiment 2

[0079] The difference between Embodiment 2 of the present invention and Embodiment 1 is that the substrate layer 11 adopts a biaxially stretched polypropylene layer. Since polypropylene is a non-polar material, in order to improve its surface stickability, it can be

[0080] Before step three is implemented, the second surface of the substrate layer 11 is corona treated to obtain a certain amount of polar groups such as carbonyl groups. After the corona treatment, the dyne value of the surface of the second surface 112 of the substrate layer 11 can reach 36 or more.

[0081] The polyethyleneimine aqueous solution is coated on the second surface 112 of the corona-treated substrate layer 11 and dried, and the drying temperature is 85-95°C.

[0082] The other steps in Embodiment 2 are the same as the corresponding steps in Embodiment 1, and will not be repeated here.

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Abstract

The present invention provides a pre-coating film and a preparation method for the pre-coating film. The pre-coating film comprises: a substrate layer, wherein the substrate layer comprises a bottom material layer and a flexible coat, wherein the bottom material layer is a biaxial tension polyester layer, a biaxial tension nylon layer or a biaxial tension polypropylene layer, and the flexible coat is arranged on the first surface of the bottom material layer, and is formed from a mixture comprising a polyurethane dispersion and a curing agent; a middle layer, wherein the middle layer is arranged on the second surface of the bottom material layer, and is formed from a polyethylenimine aqueous solution; a hot melt adhesive layer, wherein the hot melt adhesive layer is arranged on the middle layer, and is formed from EVA, EEA, EAA or EMA; and a viscosity increasing layer, wherein the viscosity increasing layer is arranged on the hot melt adhesive layer, and is formed from a mixture comprising a modified acrylic acid emulsion or a modified polyurethane emulsion and an assistant agent. According to the present invention, with arrangement of the flexible coat, the surface of the pre-coating film has a soft touch feeling; with the viscosity increasing layer, the adhesion between the pre-coating film and the printed product can be enhanced, the requirements of the subsequent processing steps are met, and the use range of the pre-coating film is expanded.

Description

technical field [0001] The invention relates to the technical field of printing coating, in particular to a precoating film and a preparation method of the precoating film. Background technique [0002] Printed matter lamination is an important means of post-press processing, which determines the final value of printed products. The lamination process of printed matter refers to covering the paper printed matter with a plastic film, using an adhesive in the middle, and after heat and pressure treatment, the plastic film and paper are bonded together to form a paper / plastic composite. One of the most advanced surface decoration processing technology. It protects and decorates printed matter, and is widely used in the field of packaging and printing, such as the surface processing of book covers, brochures, maps, advertising gift bags, and high-end packaging boxes. [0003] Pre-coated film can be called environmentally friendly or clean film coating technology, which can rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J123/08C09J133/00C09J175/04B32B27/08C09D175/04C09J7/29
CPCB32B27/34B32B2255/26C09J7/0296B32B27/08B32B2405/00C09J2479/026B32B27/36C09J2493/00C09J2423/106B32B2255/10C09J2201/162C09J2423/04C09J2205/114C09J2477/006C09J2467/006C09J2431/00C09J7/02C09J2201/36B32B27/32C09J7/29C09J2301/162C09J2301/208C09J2301/414
Inventor 钟玉
Owner 张家港保税区康得菲尔实业有限公司
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