Self-adhesive protective film and initial adhesion regulating method of self-adhesive protective film

Abstract

The invention discloses a self-adhesive protective film and an initial adhesion regulating method of a self-adhesive protective film; the initial adhesion regulating method comprises the following steps of: processing the self-adhesive protective film with a low density polyethylene printing layer, a high density polyethylene blocking and an elastomer self-adhesive layer by adopting a three-layer co-extrusion blown film method or a three-layer flow casting method, wherein the elastomer self-adhesive layer is prepared by the following steps of: firstly mixing EVA (ethylene vinyl acetute) and PE (polyurethane), and then adding POP (4, 4'-diam-inodiphenyl ether) or POE (Polyolefin Elastomer) so as to regulate the initial adhesion of the self-adhesive protective film; wherein the higher the adhesion requirement of the initial adhesion is, the larger the addition amount of the POP (4, 4'-diam-inodiphenyl ether) or POE (Polyolefin Elastomer) is. The elf-adhesive protective film has the advantages of no peculiar smell, good stability, no addition of additive agents, easiness in tearing at high temperature, low cost compared with before and good transparency; after the self-adhesive protective film is adhered on the surface of a sheet material, the self-adhesive protective film can effectively prevent the surface of a sheet material from being damaged, and the initial adhesion of self-adhesive protective film is improved; and therefore, the film adhesion difficulty for users is small; the efficiency is high; and the cost is reduced.

Description

【Technical field】 [0001] The invention relates to a self-adhesive protective film, in particular to a self-adhesive protective film pasted on polycarbonate (PC) boards, acrylic (PMMA) and other board materials. 【Background technique】 [0002] Protective film is widely used in the process of storage and transportation of various products to avoid problems such as contamination, scratches, and scratches. The protective film covers the surface of polycarbonate (PC) sheet, acrylic (PMMA) sheet, polystyrene (PS) sheet, polypropylene (PP) sheet, which can protect during storage, transportation and construction. [0003] The current printing layer of the protective film is easy to permeate, which affects the appearance and use, and the film has peculiar smell, poor stability and high cost. Especially all self-adhesive protective films at present only consider the viscosity after the film is pasted on the product, because only a moderate viscosity after the film is pasted can have ...

AI Technical Summary

Problems solved by technology

[0004] Based on many years of practical experience, the applicant found that because the existing self-adhesive protective film did not consider the viscosity of the film at all (the applicant called it: initial viscosity), the process of applying the film was difficult for the user, and the efficiency of the film was low. Usually, heating is required. It is very inconvenient to apply the film, and the efficiency of the application is very low, especially in the severe cold area.

However, those skilled in the art have never considered the problem of different viscosities when sticking the film and after pasting, which leads to great difficulty and low efficiency when sticking the film, and it is very inconvenient for users to use.

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