Composite lamella

Abstract

The invention relates to a composite lamella which comprises a viscose layer pasted with a pasted object, a composite film layer arranged on the upper end surface of the viscose layer and used for blocking permeation, an anti-static layer arranged on the upper end surface of the composite film and used for preventing electrostatic interference, and an anti-scrape layer arranged on the upper end surface of the anti-static layer and used for preventing scrape, wherein the colloid of the viscose layer comprises the following components in parts by weight: 5-20 parts of acrylamide, 10-30 parts of ethyl methacrylate, 5-25 parts of isobutyl methacrylate, 10-25 parts of polyurethane and the balance of water; the colloid weight of the viscose layer is greater than 1g; the composite film layer is a polyester film; and the thickness of the composite lamella can be set as 0.15-0.25mm, and preferably 0.25mm. According to the invention, the viscosity with the pasted object is increased, and the thickness of the composite lamella is increased without influencing the using effect.

Description

technical field [0001] The invention relates to a composite layer, in particular to a composite sheet layer, which belongs to the field of protective film. Background technique [0002] In the existing field, the application fields of composite sheets are extensive, such as mobile phone film, computer screen film, battery waterproof film, etc. These composite sheets include an adhesive layer as a substrate, which is the part to be pasted with the pasted object. In this part, the sticking force of the adhesive layer changes with the change of its thickness, that is, the thicker the adhesive layer, the greater the viscosity, and vice versa. Therefore, if the viscosity of the composite sheet needs to be increased, the thickness of the adhesive layer needs to be increased accordingly. However, as a composite sheet as a whole, its thickness is limited to a certain extent. This is mainly because the industry reserves limited space for the composite sheet during its application. ...

AI Technical Summary

Problems solved by technology

However, as a composite sheet as a whole, its thickness is limited to a certain extent. This is mainly because the industry reserves limited space for the composite sheet during its application. If it is thicker, it will affect the touch screen response speed of the mobile phone, and at the same time, it will affect the quickness of the user's use of the man-machine interface of the touch screen mobile phone.

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