Silicone products molding process
Molding, this production process is the most common. Mainly by the mold with the completion of the mold shape to determine the shape of the silicone products. Molded silicone products are usually through high-temperature molds in the addition of vulcanizing agent into the solid silicone raw materials through the vulcanizing machine to apply pressure, high-temperature vulcanization into a solid molding, molded silicone hardness is usually in the 30 ° C -70 ° C this production process is relatively simple, applicable to all silicone products.
Silicone products injection (injection) process
This process is a higher quality requirements, is a combination of liquid silicone and plastic. Its products show better thermal stability, cold resistance, excellent electrical insulation properties, combustion will not produce toxic substances. Therefore, it has become an irreplaceable material in the production and design of health products, automobiles, baby products, medical supplies, diving supplies, kitchen utensils and seals.
Silicone products extrusion process
Extrusion molding, extrusion silicone products are usually extruded through the extrusion machine extrusion silicone molding, general extrusion silicone shape is long, tube can be arbitrarily cut, the extrusion of art made out of the product shape is relatively single, mostly for the strip. Silicone tube is widely used in the field of medical, mechanical equipment. It can also be used in packaging materials to play the role of cache.
Silicone products calendering process
Silicone rubber in the addition of silica, silicone oil and other kneading and mixing made into a compound rubber and then calendered sheet. Through the calendering of the film, its longitudinal and transverse physical and mechanical properties have obvious differences, this phenomenon for the calendering effect. This phenomenon is the calendering effect. Specifically, the film longitudinal tensile strength is greater than the transverse direction, the film transverse elongation is greater than the longitudinal direction, the film longitudinal shrinkage is greater than the transverse direction. Calendering effect is the rubber in the macromolecules and needle-like, flaky with the agent in the calendering process along the calendering direction orientation results. The size of the calendering effect is related to the composition of the rubber, calendering temperature, speed, speed ratio and so on. Used for larger products, such as silicone film, silicone sheet.
Silicone products infusion process
Infusion mold or infusion mold operation: Infusion mold or infusion mold, is used for relatively smooth or simple products, there is no mold line to save labor and time, that is, you want to replicate the product or model, surrounded by adhesive board or glass plate, will be pumped through a vacuum of silica gel directly poured into the product on top of the product, to be dry and molded silica gel, take out the product, the mold will be molded (Note: Infusion molds generally use a softer hardness of silicone to do the mold, so that it is easier to take off the mold, will not damage the product inside the silicone mold). It is a combination of solid and liquid, and is used in products such as cell phone covers and luggage covers.
Silicone products coating process
Fast vulcanization; strong adhesion; good fluidity, easy to remove the bubble. Catalyzed by platinum complex, non-toxic, no odor; excellent thermal stability and cold resistance (use temperature -60 ℃ ~ 200 ℃) after molding with good air permeability, heat resistance, and a certain degree of tensile strength; anti-slip performance is excellent; non-polluting; low hardness; planting adhesion is strong. High tear strength; high transparency; good tensile properties. Wear-resistant, wash-resistant, high temperature-resistant; high three-dimensional level, smooth fabric, soft, pliable texture is excellent, good elasticity, resistant to washing and dry cleaning. Applied to the top of the cloth, it has the function of anti-aging. For example, silicone gloves, rain shoes and so on.
The above is prosperous silicone products manufacturers and technicians summarized about the silicone products process related technical knowledge!