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What are the factors that affect the smooth release of products?
The time of product demoulding is the non-production time after parison inflation molding, and the shorter the better. However, if the product can not be successfully demoulded, it not only prolongs the molding cycle, interferes with the normal molding process, but also increases the waste of the parison. The main factors affecting the smooth demoulding of the product are as follows:
1. Transition cooling of products. The increase of molding cooling time, the increase of inflation pressure, the reduction of the wall thickness of the parison, etc., is conducive to the shaping of the product and the reduction of the shrinkage of the product. However, due to the overcooling of the product, not only the production efficiency is reduced, but also the shrinkage rate of the product is reduced, the rigidity is increased, and it is difficult to demold;
2, the mold design is unreasonable. In the blowing mold design, due to various considerations, resulting in a reasonable design department. For example:
① The mold cavity is not designed with proper demoulding angle;
The mold in the handle, insert parts of the slider action is not coordinated;
The mold guide pillar installation is not appropriate;
④ There are burrs on the surface of the mold cavity, rough and uneven;
⑤ The depth/slope design of the groove in the mold cavity is unreasonable.
3. The anti-blocking and slipperiness of the raw materials of the products are poor. When these phenomena occur, the method of adding mold release agent can be used to solve the problem by spraying mold release agent in the mold cavity;
4. Operational errors. Operators in the production of products, due to careless work, resulting in mold surface damage, resulting in burrs, etc., can cause demoulding difficulties.
The above are the factors that affect the smooth demoulding of the product that we introduced. We must pay more attention to the production and use process to avoid this situation as much as possible to ensure the smooth demoulding of the product!
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