Injection molding of light guide columns brings benefits to the future development of plastic molds

During the injection molding process of plastic mold processing, the exhaust conditions of the mold are not good. Water vapor, voids, volatile gases of volatile substances in the raw material, and material decomposition gases in the melt form bubbles inside the product, or air bubbles form between the melt and the surface walls stored in the cavity, causing the surface of the product to sink.

In some cases, gas may also be present in the shrinkage holes caused by insufficient shrinkage compensation in the thick walled section. The occurrence of air foam and bubbles will further lead to insufficient charge and retention in the hollow, the increase of gas temperature caused by melt compression, plastic deterioration, discoloration or combustion and other phenomena may generate injection raw materials around air corrosion or bubbles. When there is too much water in the raw material, additives that decompose the gas and recycle the recycled material will occur, forming a gas source. Therefore, plastic raw materials must be strictly dried, and machines must have exhaust function. Reduce easily decomposable additives and reduce the use of residues or recycled materials.

As for the injection materials. When there is too much water in the raw material, additives that decompose the gas and recycle the recycled material will occur, forming a gas source. Therefore, plastic raw materials need to be strictly dried

There is not enough blank filling in the product. When the material changes from a molten state to a solidified state, the density changes, and the surface of the mold product quickly loses heat through the mold wall, causing the polymer to solidify. The result is that the polymer pulls outward, and all shrinkage is concentrated in a part of the product, leaving holes inside the product. In molded products with a thickness of more than 6mm, it is difficult to avoid gaps, and air is trapped in the molten polymer, leaving foam in the product. Plastic templates are mainly made of waste plastics, which are classified as polyethylene and polypropylene. After proportion testing, physical properties and compatibility are tested, and then mixed reasonably and crushed into particles. Add materials that are flame retardant, high-temperature, cold resistant, impact resistant, and non bending as needed, and perform a one-time molding process through plastic injection molding in a molten state.

The composite plastic templates currently developed in our country have good integrity, absorption expansion rate less than 0.06%, long-term soaking without layering, and can maintain stable board size. The plastic molds produced by plastic molds have high surface hardness, good toughness, and can be used normally at temperatures of 600130. They have good processing performance and can withstand various construction loads using any combination of connections, making them less prone to explosions during the construction process.

The production and application energy consumption of building plastic products are far lower than other materials. For example, the production energy consumption of PVC is only 1% of steel and 1/8 of aluminum, while plastic doors and windows can save 30% and air conditioning energy consumption. Therefore, applying plastic templates to template marketing is an important measure to "replace wood with plastic", "replace steel with plastic", and "save resources and energy consumption".