Learn about AS (SAN) Acrylonitrile-styrene

The plastic material is a solid material which is based on a polymer and is added to the additive at a certain temperature and pressure, and is formed by solidification or cross-linking. Let us learn about the material of AS now.

AS is a copolymer of acrylonitrile (A) and styrene (S). It has moderate weather resistance, is not affected by high humidity environment, and is resistant to general greases, detergents and mild alcohols.

It has poor fatigue resistance and is not easy to be used. It can be cracked by stress, the material is highly transparent, and the fluidity is better than ABS. AS is suitable for the plastic products trays, cups, cutlery, toothbrushes, refrigerators, knobs, lighting accessories, accessories, instrument mirrors, boxes, stationery etc.

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What's the properties of POM?

Polyformaldehyde (POM) thermoplastic crystalline polymer. Known as "Super Steel" or "Sai Steel", The English abbreviation is POM. Generally, polymers obtained by formaldehyde polymerization have a low degree of polymerization and are easily thermally depolymerized. It can be used as a raw material for organic chemicals and synthetic resins, and as a fumigant for drugs. 1.General property POM is a hard, dense material with a smooth surface and gloss, light yellow or white, thin-walled partly translucent. Combustion characteristics are easy to burn, and continue to burn after leaving the ignition source. The flame is yellow at the upper end and blue at the lower end. Melting dripping occurs and has a strong pungent formaldehyde smell and fishy smell. POM is white powder, usually opaque, good coloring, specific gravity 1.41-1.43 g/cm3, molding shrinkage 1.2-3.0%, molding temperature 170-200℃, drying conditions 80-90℃ for 2 hours. POM's long-term heat resistance ...

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What is 'Catch hook and thin-wall' of plastic mold products?

What is 'Catch hook and thin-wall' of plastic mold products ? 1. The Catch hook The catch surface and the amount of catch hook are the important basis for the test data during assembe. Once made any tiny mistake about these numbers, It would become a huge mistake of the product. Therefore, during mould design, We needs to pay special attentin to the catch hook assembly and testing. 2. The thin-wall What is the big problem about thin wall? The binding point is particularly easy to press and brittle, Then could't pass the test. It will be difficult to assemble in the next step, The product will be uneven filling, shrink, and easy broken.

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Short Shot Injection Molding

Insufficient injection is also called short shot. Short shot is the phenomenon of partly incomplete at the end of the material flow, or a part of the cavity filled with dissatisfaction, especially the thin wall area or the end area of the the runner when injection molding. When the melt is cooled down without filling the mold cavity, or the melt does not fill completely after running into the cavity, it is called the short shot injection molding. The main reason for short shot is that the flow resistance is too large, which makes the melt unable to continue to flow. The factors which impact the melt flow length including: * wall thickness of parts, * mold temperature, * injection pressure, * melt temperature and material composition. If these factors are not handled properly, they will result in short shot. Green Vitality Industry Co., Ltd offers high quality plastic injection molding services to meet the injection molding needs of any custom...

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