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Pre-coating film

A technology of pre-coating film and substrate layer, which is applied in the direction of coating, film/sheet release coating, film/sheet-shaped adhesive, etc., which can solve the problem of insufficient bonding fastness between printed matter and pre-coating film Problems such as shedding of film-covered articles and high hot-melt temperature of hot-melt adhesives can achieve the effect of improving bonding durability, increasing service life, and uniform curing

Inactive Publication Date: 2017-08-04
方俸君
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current pre-coating film is not easy to combine with hot-melt adhesive. After the film is coated, the hot-melt temperature of the hot-melt adhesive is too high, and the hot-melt solidification is uneven, resulting in insufficient bonding fastness between the printed matter and the pre-coating film. After a long time, the pre-coating film is easy to bond with Coated items fall off, causing many product defects

Method used

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  • Pre-coating film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of pre-coating film, comprises the substrate layer that thickness is 0.01mm and the hot-melt adhesive layer that is coated on the substrate layer, and substrate layer is linear low-density polyethylene, between substrate layer and hot-melt adhesive layer A functional layer is provided, and the functional layer is formed by coating an aqueous solution of a functional composition with a mass fraction of 3%. 5 parts, 5 parts of sodium citrate, 3 parts of hydrolyzed polymaleic anhydride and 0.5 parts of disodium hydrogen phosphate, and then configure 3% aqueous solution with each part of 5g, and coat it on the substrate layer.

[0023] Then configure the hot-melt adhesive used for the hot-melt adhesive layer according to the following component distribution: ethylene-vinyl acetate copolymer 100g, vinyl acetate-vinyl chloride 5g, ethyl cellulose 2g, polyethyleneimine 8g, pentaerythritol stearate 1g , 3g of water-based polyurethane and 1g of hydroxypropyl-terminated fl...

Embodiment 2

[0025] A kind of pre-coating film, comprises the substrate layer that thickness is 0.03mm and the hot-melt adhesive layer that is coated on the substrate layer, and substrate layer is polypropylene, is provided with function between substrate layer and hot-melt adhesive layer layer, and the functional layer is formed by coating an aqueous solution of a functional composition with a mass fraction of 5%. 7 parts of sodium bicarbonate, 1 part of hydrolyzed polymaleic anhydride, and 1 part of disodium hydrogen phosphate, and then 5g of each part was configured into a 3% aqueous solution and coated on the substrate layer.

[0026] Then configure the hot-melt adhesive used for the hot-melt adhesive layer according to the following component distribution ratio: ethylene-vinyl acetate copolymer 100g, vinyl acetate-vinyl chloride 10g, ethyl cellulose 3g, polyethyleneimine 5g, pentaerythritol stearate 3g , 5 g of water-based polyurethane and 0.5 g of hydroxypropyl-terminated fluoropolys...

Embodiment 3

[0028] On the basis of the formula of the functional composition in Example 1, 0.2 parts of ammonium chloride were added.

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Abstract

The invention relates to the technical field of a high polymer material and specifically relates to a pre-coating film. The pre-coating film comprises a substrate layer and a hot melt adhesive layer, wherein a functional layer is arranged between the substrate layer and the hot melt adhesive layer; the functional layer is formed by coating an aqueous solution of a functional compound in mass fraction of 3-5%; the functional compound comprises the following components in parts by weight: 100 parts of carboxymethylcellulose, 33-35 parts of polyvinylpyrrolidone, 5-7 parts of sodium citrate, 1-3 parts of hydrolytic polymaleic anhydride and 0.5-1 part of disodium hydrogen phosphate. A substrate layer film of the pre-coating film prepared according to the invention has good adherence to the hot melt adhesive; after the pre-coating film is applied to a sample, the service life is longer and the endurance is greatly improved; after the hot melt adhesive is uniformly cured, the hot melt adhesive plays a positive role in the service life after coating; and meanwhile, the hot melt adhesive provided by the invention can achieve a better binding effect.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a precoating film. Background technique [0002] Lamination is a main process of post-press processing. It is to bond the plastic film coated with adhesive with the paper printed matter after heating and pressing to form a paper-plastic integrated product. It is currently a common One of the post-press processing techniques for paper printed matter. The coated printed matter has a smoother and brighter surface due to the addition of a thin and transparent plastic film on the surface, which not only improves the gloss and fastness of the printed matter, but also prolongs the service life of the printed matter. Waterproof, anti-fouling, wear-resistant, folding-resistant, chemical corrosion-resistant and other protective functions. If a transparent glossy film is used for lamination, the printed graphics and texts of the film-coated products will be more vivid and full o...

Claims

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Application Information

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IPC IPC(8): C09J7/02C09J123/08C09J11/08C09J11/06C09D101/28C09D7/12
CPCC08K2003/324C08L2205/03C08L2205/035C09D7/61C09D7/63C09D101/286C09J7/50C09J11/06C09J11/08C09J123/0853C09J2301/122C09J2301/304C09J2301/312C09J2301/408C09J2301/414C09J2401/00C09J2401/003C09J2423/006C09J2423/04C09J2431/00C09J2475/00C09J2479/00C08L87/00C08L35/00C08K3/32C08K5/098C08K3/28C08L31/04C08L1/28C08L75/04C08L79/02C08K5/103
Inventor 方俸君张增强向付龚晓丽钟新群张晓丹
Owner 方俸君
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