Kiinteä jäykkä muovinen PVC-levyvalmistetaan yleensä asettamalla ja kuumentamalla valssattua PVC-levyä. Kiinteä jäykkä muovinen PVC-levy on jaettu 3 lämmitysvaiheeseen, 1 säätövaiheeseen ja 1 jäähdytysvaiheeseen.
1. Matalan lämpötilan lämmitysvaihe
2. Keskilämpötilan lämmitysvaihe
3. Korkean lämpötilan lämmitysvaihe
4. Pysäytä lämmityksen säätövaihe
5. Jäähdytysvaihe
PVC rigid board is usually made by superposing and heating the rolled PVC sheet. According to needs, this solid rigid plastic PVC sheet can be flexibly made into various thicknesses. As PVC is a thermally unstable resin, it will decompose to release HCl and form a polyene structure. If processed at high temperature for a long time, it will seriously affect the performance of the product. However, PVC is also a poor heat conductor and slow heat transfer. To prepare products with good performance, the heating time is difficult to control. If the heating time is not enough, the inside of the board is easy to layer; if the heating time is too long, it will not only reduce the production efficiency, What's more serious is that PVC will decompose rapidly at high temperature for a long time, which will affect the performance of the product.
