Silica gel products injection molding equipment

Silica gel products injection molding machine

Liquid silicone rubber is also called two-component additive silicone rubber. Liquid silicone rubber (LSR) is a kind of organosilicon rubber compared with mixed semi-solid silicone rubber and common room temperature vulcanized one-component silicone rubber.
This kind of silicone rubber has good fluidity, fast vulcanization and can be poured and injected.
Liquid silicone rubber can be divided into two types: self-adhesive and non-self-adhesive. Liquid silica gel can be cured at room temperature and at high temperature. High temperature curing can complete the curing process in a few seconds.The typical liquid silicone rubber is soft,elastic, non-toxic, odorless and transparent. It has high medical safety and food safety. It can be used as artificial breast filler. When liquid silica gel is added with conductive, thermal and wave conductive functional materials, it can be endowed with corresponding
Other applications such as die manufacturing and electronic module encapsulation.There are many kinds of liquid silicone rubber. Generally, manufacturers can produce varieties with different viscosity, curing speed, color and mechanical strength according to their needs. Typical self-viscous liquid transparent silica gel models such as TG-8402 and non-self-viscous liquid silica gel such as TG-8201Liquid silicone rubber can be used in trademarks, products, nipples, medical supplies, coating, impregnation and perfusion.

Silica gel products such as crystalline glue, polyurethane, epoxy resin, injection moulding process, cake moulds, etc. are widely used in the electronic industry as moisture-proof, shipment, insulation coating and sealing materials for electronic components and assemblies.

They provide dust-proof, moisture-proof, shock-proof and insulation protection for electronic components and assemblies.If transparent gel is used to encapsulate electronic components, it can not only play a role of shockproof and waterproof
protection, but also can see components and detects the malfunction of components by using probes, and the damaged silicone gel can be re filled and repaired again.

It can also be used to make moulds for products of gypsum, wax, epoxy resin, polyester resin, polyurethane resin and low melting point alloys.

It can also be used for high frequency embossing of artificial leather, shoe upper and bottom moulding, manufacturing of Arts and crafts, replication of ceramic, toy industry, furniture, household electrical appliances and electronic components industry, moulding of gypsum,Baby pacifiers, baby supplies, medical supplies, automotive supplies,cement materials, moulding of wax products, moulding of models. Manufacturing, material moulding, etc.

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The Manufacturing Process

The manufacturing process for pacifiers is very simple. Since most are made of one-piece construction, the preferred method for safety’s sake, the production occurs in one stage using liquid injection molding. Liquid injection molding was derived from metal die casting, but unlike molten metals, polymers have a high viscosity and cannot be poured into a mold. Instead, a large force must be used to inject the polymer into a hollow mold. A great deal of melt, the name given to molten polymers, must be forced into the cavity as there is some shrinkage upon cooling.

First, the pellets of polymer must be melted at very high temperatures, usually 360-420°F (182-216°C). Pellets are fed from a hopper into a machine that liquefies the pellets. The polymer is now molten and ready for injection.

2.Next, the melt is rammed into the mold at very high speed and under intense pressure, approximately 300-700 psi. The melt fills the mold, then a bit more melt is added in order to compensate for the contraction due to cooling and solidification of the polymer.

3.Once the polymer has cooled, it is separated from the mold. This solidified part is simply ejected from the mold automatically, and the melt and injection cycle is ready to begin again. Each cycle takes between 10 and 100 seconds depending on the time it takes the polymer to cool and set.

4.The one-piece pacifier is then inspected and packaged for shipment. Pacifiers are not considered sterile when packaged but are considered clean.

Manufacturing fun, safe toys for babies and toddlers
Playing is an essential part of growing up and exploring the world, and that’s why it’s essential for little ones to have plenty of safe, fun and exciting toys around as soon as they enter the world. You can discover a wide selection of playtime essentials for newborns, older infants and toddlers that will stimulate, entertain and encourage learning and creativity during those first few formative years. Best of all, we offer them at Every Day Low Prices, so it’s easy to fill your child’s toy box with fun toys.

How to Distinguish Between Liquid Silicone Rubber and Solid Silicone Rubber?

The main difference between Liquid Silicone Rubber and solid silicone rubber is one is liquid, and the other is solid. But after processing the finished product, the two are not easy to distinguish.

1.From the shape to distinguish. Liquid Silicone is liquid state with liquidity. Solid silica gel is solid and has no fluidity.

2.Distinguish from the filed of using. Liquid silicone is generally used in infant supplies, kitchen supplies, medical supplies, which can be directly contact with food and human body. Solid silicone is generally used in industrial supplies and sundries, auto parts, etc.

3.From the molding way to distinguish. Liquid silicone is injection molding liquid silicone rubber, it is high transparency and high safety food grade material. Solid silicone is transparent material, it needs vulcanizing agent to accelerate the forming time of the mold.

4.Distinguish from the finished products. Liquid silica gel has high transparency and no peculiar smell, it has glue injection mouth. Solid silica gel has low transparent, with vulcanizing agent or other odor masking agent, and the product has no glue injection mouth.