A kind of edge banding process of three-layer composite hollow plastic board

Abstract

The invention relates to an edge-banding process of a three-layer composite hollow plastic plate, wherein the three-layer composite hollow plastic plate is made of PP (Poly Propylene) or PE (Poly Ethylene) and is sequentially composited by an upper plastic surface layer, a middle reinforcing layer and a lower plastic surface layer. The edge-banding process is characterized by comprising the following steps: firstly, driving the three-layer composite hollow plastic plate to translate at a constant speed in a constant direction through a conveying device, and in the translational process, heating to-be-edge-banded parts at the edges of the three-layer composite hollow plastic plate by way of blowing hot air through a fixedly arranged heater; secondly, roller-forming the to-be-edge-banded parts in a rolling manner through forming compression rollers arranged in pairs; thirdly, after roller-forming in the second step, cutting the banded edges through a fixedly arranged cutter or a rotatably arranged cutting wheel. According to the process provided by the invention, heating and rolling are carried out in two steps, so that the to-be-banded parts can be fully heated and a better forming effect of rolling in the next step can be obtained. Therefore, finished products are reliably edge-banded, and are smooth and attractive in surface.

Description

technical field [0001] The invention relates to a hollow plastic plate manufacturing process, in particular to an edge-sealing process for a three-layer composite hollow plastic plate. Background technique [0002] Hollow plastic panels have a wide range of uses, and are suitable for building decoration materials such as roofs, wall panels, partitions, decorative materials on cars, and logistics packaging materials such as turnover box wall panels and turnover box inner compartments. [0003] The traditional plastic hollow board is integrally extruded. From the structural point of view, it is composed of two parallel surface layers and a rib connected between the two surface layers. However, a higher-strength three-layer composite hollow board was developed later. Its specific structure is as attached figure 1 And attached figure 2 As shown, it is composed of an upper plastic surface layer 1, a middle reinforcement layer 2 with a concave-convex section and a lower plastic...

AI Technical Summary

Problems solved by technology

The above-mentioned existing edge banding process is suitable for ordinary hollow plastic panels, but it is not suitable for three-layer composite hollow plastic panels, and the processed effect is much worse. This is because: three-layer composite hollow plastic panels are composed of three layers. It is thick and the heat conduction speed is slow. It is difficult to ensure that the heat can be transferred from the surface layer of the plate to the middle layer at the moment of rolling by the roller. Layer heating is not sufficient

Images