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Super-sticky precoating and preparation method and application thereof

A technology of pre-coated film and polypropylene film, which is applied in the direction of chemical instruments and methods, adhesives, film/sheet adhesives, etc., can solve the problems of film release, air bubbles, and weak adhesion, etc., and achieve strong adhesion Effect

Active Publication Date: 2015-09-23
NEW ERA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the printed matter printed by the current digital printing equipment has silicone oil, toner or electronic ink on the surface. When using ordinary pre-coated film to cover the film, it is easy to produce bubbles, peeling off, and poor adhesion.

Method used

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  • Super-sticky precoating and preparation method and application thereof

Examples

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Comparison scheme
Effect test

preparation example Construction

[0025] The present invention provides a kind of preparation method of super sticky precoat film described in above-mentioned technical scheme, comprises the following steps:

[0026] Coating the hot melt adhesive on the substrate layer to obtain a super-adhesive pre-coating film intermediate;

[0027] The polyethyleneimine solution is coated on the surface of the hot-melt adhesive layer of the super-adhesive pre-coating film intermediate, and dried to obtain a super-adhesive pre-coating film.

[0028] In the invention, the hot-melt adhesive is coated on the base material to obtain a super-adhesive pre-coating film intermediate.

[0029] In the present invention, the types and sources of the hot-melt adhesive and the base material are consistent with the above-mentioned technical solutions, and will not be repeated here.

[0030] The present invention has no special limitation on the coating method, and the coating technical solution well known to those skilled in the art can ...

Embodiment 1

[0052] The number-average molecular weight is 20000g / mol ethylene-acetate copolymer (purchased from Samsung, Korea) to be coated on the biaxially oriented polypropylene film substrate (purchased from Furonghui (Fujian) Industrial Co., Ltd. ) to obtain a super-adhesive pre-coating film intermediate, the thickness of the substrate layer in the super-adhesive pre-coating film intermediate is 15 μm, and the thickness of the hot melt adhesive layer is 15 μm;

[0053] Mix 0.88 kg of polyethyleneimine (number average molecular weight: 50000 g / mol) aqueous solution with a solid content of 19%, 50 kg of methanol and 5 kg of isopropanol to obtain a polyethyleneimine solution;

[0054] After obtaining the super-adhesive pre-coating film intermediate, the above-mentioned polyethyleneimine solution is coated on the surface of the hot-melt adhesive layer of the super-adhesive pre-coating film intermediate, and the line speed of coating is 80 meters / min, and then on the coating machine Dry w...

Embodiment 2

[0057] The number-average molecular weight is 20000g / mol ethylene-acetate copolymer hot-melt adhesive (purchased in Mitsui Co., Ltd., Japan) to be coated on the biaxially oriented polyester film (purchased in Yingkou Kanghui Petrochemical Co., Ltd.) by roll coating, Obtain a super sticky precoat film intermediate, the thickness of the substrate layer in the super sticky precoat film intermediate is 15 μm, and the thickness of the hot melt adhesive layer is 15 μm;

[0058] Mix 0.82 kg of polyethyleneimine (number average molecular weight: 100000 g / mol) aqueous solution with a solid content of 19%, 45 kg of methanol and 4 kg of isopropanol to obtain a polyethyleneimine solution;

[0059] After obtaining the super-adhesive pre-coating film intermediate, the above-mentioned polyethyleneimine solution is coated on the surface of the hot-melt adhesive layer of the super-adhesive pre-coating film intermediate, and the line speed of coating is 75 meters / min, and then on the coating mac...

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Abstract

The invention provides a super-sticky precoating and a preparation method and application thereof. The super-sticky precoating comprises a base material layer, a holt-melting glue layer and a polyethyleneimine layer which are in contact in sequence. Compared with the prior art, the super-sticky precoating comprises the polyethyleneimine layer, so that the super-sticky precoating has strong bonding force, and the phenomena of bubbles, coating disengagement and infirm bonding can be avoided in the coating process; the super-sticky precoating can penetrate through silicon oil, ink and other substances, the effect of perfect bonding with a printed material can be achieved, and the service life of the printed material is prolonged. It is shown through test results that after a digital printing paper sheet is covered by the super-sticky precoating, the phenomenon of bubbling and disengaging can be avoided in the folding process, and the bonding intensity of the super-sticky precoating is larger than or equal to 3.0 N / m.

Description

technical field [0001] The invention relates to the technical field of precoating films, in particular to a super-adhesive precoating film, a preparation method and application thereof. Background technique [0002] In the printing industry, digital printing has gradually become a new industry due to its flexible personality, high efficiency and fast features. Digital printing is a comprehensive technology developed on the basis of printing technology. It is to print computer files directly on paper, that is, use electronic text as a carrier, and transmit it to digital printing equipment through the network to achieve direct printing. Digital printing is a new printing method that is different from the cumbersome process of traditional printing. Its features include: printing from one sheet, no need for plate making, immediate availability, instant error correction, variable printing, and on-demand printing. From simple printing and copying of documents, production of busin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J123/08B32B27/08
Inventor 陈世钦
Owner NEW ERA IND
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