Silicone products from raw materials to molding, silicone molds can be described as vital, through the mold we can make silicone into any desired shape, molded silicone products beautiful appearance is not easy to deform, soft and comfortable to the touch with excellent elasticity and electrical insulation properties; according to the different silica gel molding process, silicone molds can be divided into liquid silicone molds, According to different silicone molding process, silicone molds can be divided into liquid silicone molds, molded silicone molds and extrusion silicone molds.
1, extrusion silicone mold
Extrusion silicone mold is a kind of extrusion equipment used in extrusion pipe mold, through the extruder feed silicone will be extruded into the corresponding shape and then by the hauling equipment stowage, extrusion mold development cycle is fast and low-cost, production capacity, high shipping cycle; drawbacks is that it is only suitable for tubes, strips, and other extruded silicone products, in the food, medical, chemical and mechanical fields are widely used. The disadvantage is only applicable to tube, strip and other extrusion molding silicone products, in the food, medical, chemical, mechanical and other fields widely used.
2, molding silicone mold
Molding silicone mold refers to the mixing of rubber into the silicone mold heating and pressurization vulcanization molding, silicone product output by the size of the mold and the machine tonnage limitations, molding process requires attention is the machine mold temperature, vulcanizing agent ratio and vulcanization time, commonly used in industrial miscellaneous parts and automotive parts and other fields, such as silicone gasket, Silicone suction cups, silicone dust plugs, silicone buttons, etc..
3, injection pressure liquid silicone mold
Injection pressure liquid silicone mold is called LSR, it is similar to the structure of the plastic mold, through the injection molding machine in the mold injection port will be injected into the liquid silicone silicone molding cavity heating and curing molding, high product accuracy and high yield, a lot of savings in manpower and electricity raw materials; liquid silicone products need to pay attention to the temperature of the production process, venting and vulcanization time; The disadvantage is that after curing is easy to stick in the mold cavity, the mold needs to be matched with a mature film removal process, the product is used in mother and baby, electronics, kitchenware and medical field, such as silicone diving glasses, silicone nozzle, remote control protective cover, liquid cell phone case.
Two, the characteristics and advantages of silicone products
1, high temperature: applicable temperature range -40 to 230 degrees Celsius, can be used in microwave ovens and ovens, can be put in the microwave oven bowls and plates, lunch boxes are made of silicone.
2, easy to clean: silicone production of silicone products after use in the water rinse can be restored to clean, can also be cleaned in the dishwasher.
3, long life: silicone material chemical properties are very stable, made of products, compared with other materials have a longer life.
4, soft and comfortable: thanks to the softness of the silicone material, the cake mold products are comfortable to the touch, very flexible, not deformed.
5, color variety: according to the customer's needs, can be deployed in different beautiful colors, customized personalized style.
6, environmental protection and non-toxic: from the raw materials into the factory to the finished product shipments do not produce any toxic and harmful substances.
7, electrical insulation properties: silicone rubber has a high electrical resistivity, and in a wide range of temperatures and frequency range of its resistance value can remain stable. At the same time, silicone rubber has good resistance to high-voltage corona discharge and arc discharge, such as high-voltage insulators, high-voltage caps for televisions, electrical parts and so on.
8, low-temperature resistance: ordinary rubber minimum temperature threshold for -20 degrees to -30 degrees, but the silicone rubber is -60 degrees to -70 degrees still has good elasticity, some special formulations of silicone rubber can also withstand extremely low temperatures, such as low-temperature seals.
9, conductivity: when adding conductive filler (such as carbon black), silicone rubber has good conductivity, such as keyboard conductive contacts, electric heating components, anti-static components, high-voltage cable shielding, conductive film for medical treatment.
10, marina resistance: ordinary rubber in the corona discharge generated by the rapid degradation of ozone, while the silicone rubber is not affected by ozone, and for a long time in the ultraviolet light and other climatic conditions, its physical properties have only minor changes, such as outdoor use of sealing materials.
11, thermal conductivity: when adding some thermal filler, silicone rubber has good thermal conductivity, such as heat sinks, thermal gaskets, copiers, fax machines, thermal rollers.
12, radiation resistance: containing phenyl silicone rubber radiation resistance is greatly improved, such as electrical insulation cable, nuclear power plant connectors.