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Universal precoat

A pre-coated, general-purpose technology, applied in adhesive types, film/sheet adhesives, polyurea/polyurethane adhesives, etc., can solve the problem of reducing the adhesive force of the coating layer on printed matter, Problems such as increased difficulty in laminating work, to achieve the effects of excellent bond strength, high flatness, and high tensile strength

Active Publication Date: 2014-08-13
KANGDE XIN COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, this has greatly enriched people's production and life, on the other hand, it has increased the difficulty of post-press lamination work, especially with the maturity and popularization of digital printing technology, in order to ensure that printed products have excellent color and image characteristics, Various fillers and additives are often introduced into printing inks, such as wax, silicone oil, etc., which seriously reduces the adhesion of the film coating layer to the printed matter, posing a severe challenge to the traditional film coating technology

Method used

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  • Universal precoat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: Take the biaxially oriented polypropylene (BOPP) general-purpose pre-coating film with a finished width of 1410 mm as an example to illustrate in detail.

[0020] 1) The configuration of the water-based adhesive for the tackifying layer. Use acrylic emulsion or polyurethane emulsion and adhesion promoter in proper proportion to prepare water-based adhesive with good bonding effect with ink.

[0021] 2) see figure 1 , the finished biaxially oriented polypropylene (BOPP) universal pre-coating film has four layers, the first layer is the base material 1, the second layer is the intermediate layer 2, the third layer is the hot melt adhesive layer 3, and the fourth layer is the Tackifier layer 4. The substrate 1 is made of biaxially oriented polypropylene (BOPP) film with a width of 1430 mm; the middle layer 2 is made of polyethyleneimine (PEI); the hot-melt adhesive layer 3 is made of ethylene-vinyl acetate (EVA) hot-melt adhesive.

[0022] Using a production ...

Embodiment 2

[0023] Example 2: Taking the biaxially oriented polyester (BOPET) general-purpose pre-coating film with a finished width of 1580 mm as an example, it will be described in detail.

[0024] 1) The configuration of the water-based adhesive for the tackifying layer. Use (modified) acrylic emulsion or (modified) polyurethane emulsion and adhesion promoter in proper proportion to prepare a water-based adhesive with good ink bonding effect.

[0025] 2) see figure 1 , the finished biaxially oriented polyester (BOPET) universal pre-coating film has four layers, the first layer is the base material 1, the second layer is the intermediate layer 2, the third layer is the hot melt adhesive layer 3, and the fourth layer is the Tackifier layer 4. The substrate 1 is made of biaxially oriented polyester (BOPET) film with a width of 1600 mm; the middle layer 2 is made of polyethyleneimine (PEI); the hot-melt adhesive layer 3 is made of ethylene-vinyl acetate (EVA) hot-melt adhesive.

[0026]...

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Abstract

Disclosed is a universal precoating film, comprising: a substrate (1), the substrate (1) being a biaxial stretched plastic film with a thickness of 10-30 mum; an intermediate layer (2), the intermediate layer (2) being bonded with the substrate (1), the intermediate layer (2) being polyethylenimine, with a thickness of 0.01-0.03 mum; a hot melt adhesive layer (3), the hot melt adhesive layer (3) being bonded with the intermediate layer (2), the hot melt adhesive layer (3) having a thickness of 10-35 mum; and an adhesion-promotion layer (4), the adhesion-promotion layer being bonded with the hot melt adhesive layer (3), the adhesion-promotion layer (4) being a heat-sensitive or pressure-sensitive aqueous adhesive, with a thickness of 0.01-0.08 mum.

Description

Technical field [0001] The invention relates to the technical field of printing coatings, and in particular to a printing coating with strong universality and excellent bonding strength to printed matter produced by various printing technologies, especially digital printing technologies. It is a printing coating that adopts coating, extrusion and Produces pre-coated films made with composite process technology. Background technique [0002] Laminating is an important means of post-press processing of printed matter. This technology was gradually introduced into my country in the late 1980s. Since the laminating process can not only protect the printed matter and extend its service life, but also improve the appearance of the printed matter, this process It has quickly gained popularity across the country and has been widely used in the packaging of books, periodicals, food, tobacco, alcohol, medicine, etc. [0003] The coating process is divided into instant coating and pre-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/02C09J133/00C09J175/04B32B27/08B32B27/32C09J7/29
CPCC09J175/04C09J123/0846C09J7/0296B32B27/08C09J133/00C09J2423/106C09J2479/026C09J2201/162C09J2423/04C08G2170/80C09J2205/114C09J2477/006C09J2467/006C09J7/02C09J2431/00C09J2201/36C09J2433/00B32B7/12B32B27/306B32B27/308B32B27/34B32B27/36B32B27/40B32B2307/518B32B2307/54C09J7/29C09J2301/162C09J2301/208C09J2301/414
Inventor 钟玉
Owner KANGDE XIN COMPOSITE MATERIAL CO LTD
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