Hollow board, PP hollow board material what are the requirements?

Hollow board turnover box is made of copolymerization polypropylene as the main raw material of injection molding plastic hollow board. Like other polypropylene plastic hollow board, hollow board turnover box is a kind of colour and lustre is bright beautiful, high strength, light quality, long service life, insect-resistant, moistureproof, mouldproof,. , clean sanitation, and easy to clean and convenient handling larger container. Turnover box structure form of the stationary and folding two kinds: stationary turnover box is in the bigger injection machine ( The injection capacity is more than 1000 cm3) A injection molding; Folding turnover box is composed of multiple parts assembly, forming in different specifications of the various parts of the injection machine, injection molding, and then together.

turnover box USES, mainly used in all kinds of food, beverages, agricultural products, industrial parts, chemical products and drugs such as turnover, transportation transfer boxes, convenient packing and all kinds of things, storage, handling and storage. 1% when, must be dry. In 70 ~ 80. C in the hot air circulation drying 2 ~ 3 h. Suitable for amorphous plastic hollow board, viscosity, liquidity, good heat stability were injected more easily. Used for injection of hollow plate relative molecular mass of about 7, one thousand, 200000, forming temperature range is wide, under the sticky flow a little fluctuations in temperature will not affect the injection process.

(2) the staining method of raw material, use float dying or add color masterbatch, in proportion to join in the aggregate, mixing stir to mix well. Such as plunger type injection machine, to avoid the color difference, should be the mix color material extrusion granulation after injection.