Embossing and pattern coincident long plastic layer and rolling method and equipment

Abstract

The invention discloses an embossing and pattern coincident long plastic layer and a rolling method and equipment. The method comprises the steps of feeding, wherein a plastic layer to be rolled is made to enter a rolling double roller; rolling, wherein hot rolling embossing is performed on the plastic layer. According to the step of rolling, the feeding tension of the plastic layer is adjusted according to the embossing and pattern longitudinal deviation value; the equipment comprises a first feeding device, a rolling double roller control device, a detection device and a tension controller arranged on the first feeding device; according to the embossing and pattern coincident long plastic layer manufactured through the method, embossing on the transparent plastic layer through hot rolling and patterns on the plastic layer coincide with each other. According to the method, the equipment, and the embossing and pattern coincident long plastic layer processed through the method, coincidence of the embossing on the plastic layer and the patterns on the plastic layer is achieved, the production efficiency is high, the cost is low, and energy consumption is low.

Description

[0001] technical field [0002] The invention relates to a PVC decorative material, especially a long plastic layer with overlapping embossing and patterns, and a method and equipment for rolling the continuous length of the plastic layer. The decoration material can also be other stretchable thermoplastics. Background technique [0003] PVC decoration material is a new type of light-weight floor decoration material that is very popular in the world. It is popular in Europe, America and Asia, Japan and South Korea, and is popular abroad. At present, it has also been widely recognized in large and medium-sized cities in China, and has been more and more used in homes, hospitals, schools, office buildings, factories, supermarkets, airport halls, stadiums and other places. [0004] Existing PVC decoration materials are usually composed of a transparent plastic layer on the surface (equivalent to a transparent layer, a protective layer, and a wear-resistant layer), a patterned ...

AI Technical Summary

Problems solved by technology

This traditional lamination method has great defects: one pressing board can only press two pieces of PVC decorative materials on the front and back at a time. In mass production, if you want to increase the output, you must prepare a large number of pressing boards, which is costly and energy-consuming; Aligning the pattern on the pattern with the pattern on the patterned plastic layer requires manual operation, with heavy workload and low accuracy, resulting in low production efficiency. Moreover, the length of each piece of PVC decorative material is fixed, and the pattern of the finished floor is repeated. Matches properties of natural materials

However, unfortunately, due to fatal flaws, the technical solution of this patent has not been able to be put into practical application

This fatal defect is: when the negative film, decorative layer, and wear-resistant layer are embossed synchronously by the pattern roller, the rolling pressure plus the rolling temperature (above 85 degrees) will inevitably cause the decorative layer to elongate in the longitudinal direction, while The pattern used for embossing on the pattern roller will not elongate, which will inevitably lead to coincidence deviation between the pattern on the pattern roller and the pattern on the decorative layer, which will affect the three-dimensional effect and simulation effect of PVC decorative materials, and the product quality cannot be guaranteed

It is said that it has solved the problem to a certain extent because, if during the rolling process, once the printing pattern on the printing layer and the embossing pattern on the embossing roller appear to coincide with each other in the longitudinal direction, the patented technology still cannot be rolled. This deviation is corrected by dynamic adjustment during the pressing process

Because the embossing roller presses the printing layer tightly during embossing, the relative position between the embossing roller and the printing layer cannot be achieved by adjusting the feeding speed of the printing layer and / or adjusting the rotational speed of the embossing roller ( There is the same defect as the above-mentioned U.S. Patent US005122212A)

[0008] For decades, those skilled in the art have been exploring an effective way to use the rolling method to realize the overlap of the transparent plastic layer embossing pattern and the patterned plastic layer pattern, but there has been no breakthrough. Unfortunately, so far, this field can only use The oldest lamination method mentioned above to achieve the coincidence of embossing

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