Method and equipment for gluing ASA and PMMA alloy decorative films

Abstract

The invention discloses a method and equipment for gluing ASA and PMMA alloy decorative films. The method comprises the following steps: coating a layer of base coat glue on the back surfaces of the ASA and PMMA alloy decorative films serving as base materials; respectively drying and cooling the base coat glue and the base materials, so that the base coat glue is dried to form a glue layer; and finally, obtaining the ASA and PMMA alloy decorative films with glue layers. The gluing equipment comprises a first unwinding machine, a coating system, multiple heating and drying rollers, multiple cooling rollers, a composite roller, a second unwinding machine, a winding machine and a rack. The ASA and PMMA alloy decorative films can be tightly attached to the heating and drying rollers and the cooling rollers during drying and are always in a tightened state between the rollers; and therefore, the alloy decorative films do not deform in the drying process. According to the contact-type transient heating mode, the heating temperature can be set to be extremely high, so that the ASA and PMMA alloy decorative films coated with the base coat glue are not hardened, and the original softness is maintained.

Description

technical field [0001] The invention belongs to the technical field of preparation of decorative materials, in particular to a gluing method and gluing equipment for ASA and PMMA alloy decorative films. Background technique [0002] Since 2000, plastic doors and windows have begun to develop in the direction of colorization. They are mainly made of co-extruded color profiles, full-body color profiles or ordinary white PVC profiles with a layer of color plastic decorative film on the surface. The commonly used color plastic decorative film on the market is PVC film. This film is composed of a PVC bottom layer, a printing layer and a PMMA surface layer. However, due to its complex structure and high price, it has not been widely promoted and applied. At present, the mainstream color profiles on the market are co-extruded color profiles, which are co-extruded with a thin layer of color ASA or PMMA plastic layer on the outdoor visible surface of ordinary white PVC profiles. Beca...

AI Technical Summary

Problems solved by technology

This existing gluing equipment is very mature for coating conventional plastic films. However, when using this gluing equipment to coat the primer glue on the back of ASA and PMMA alloy decorative films, it is found that the glue formed in the drying process Serious deformation has taken place in the layer, but this phenomenon does not occur when the primer glue used is used to coat other plastic films, so this existing glue coating equipment is not suitable for the glue coating of ASA and PMMA alloy decorative films

In addition, after gluing, the glue layer becomes very hard and has no flexibility. The reason is that there is serious stress between the glue layer and the ASA and PMMA alloy decorative films, so the existing gluing process must be improved And equipment to adapt to the coating of this new ASA, PMMA alloy decorative film

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