Guangzhou Rosin Packaging Co., Ltd
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  • November 08, 2021
    PET raw material
    1. What is PET material? PET is a polymer material, the full name is polyethylene terephthalate, which is synthesized by transesterification of dimethyl terephthalate and ethylene glycol or esterification of terephthalic acid and ethylene glycol, and then the condensation reaction. This material is a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface....
  • July 18, 2022
    1. What is the product made of : PLA, also known as polylactic acid, is a polyester made through the fermentation under controlled conditions of a carbohydrate source like corn starch, tapioca roots, or sugarcane. Plants  → sugar →fermentation(lactic acid)→monomer production (lactide)→polymer production→PLA→polumer conversion→sheet of PLA for packaging or PLA for fibers etc.   2.&nb...
  • July 27, 2022
    1. Introduction of the material:  PVC is polymerized from vinyl chloride monomer and is one of the commonly used thermoplastics. Its trade name is referred to as "Chloroplastic".  Pure polyvinyl chloride resin is a hard thermoplastic material, its decomposition temperature is very close to the plasticization temperature, and its mechanical strength is poor. Therefore, it is impossib...
  • August 04, 2022
    PP raw material
    1. What is PP material?  pp stands for polypropylene material in plastics. Polypropylene is a thermoplastic resin obtained by polymerizing propylene. The copolymer-type PP material has lower heat distortion temperature (100°C), low transparency, low gloss, and low rigidity, but has stronger impact strength. The impact strength of PP increases with the increase of ethylene content.  ...
  • August 10, 2022
    PS raw material
    1. What is the product made of : PS (polystyrene plastic) refers to a class of plastics including styrene groups in the macromolecular chain, including styrene and its copolymers. Its characteristics are colorless, odorless and tasteless. PS is a relatively old plastic. After many years, its production process is relatively perfect. PS has good transparency (light transmittance of 88%-92...
  • September 09, 2022
    Commonly used sheet materials include PVC, PET, PP, PS and flocking sheets, gold-plated sheets and anti-static sheets based on these plastic. 1. Polyviny Chloride(PVC) : PVC is the most commonly used plastic material, its texture is very soft, strong toughness, and good plasticity. This material can be made into transparent and various colors, and is often used in various electronics, cosmetics, t...
  • October 12, 2022
    After customers approve the samples, they usually place a certain number of production orders. The production dispatch meeting will decide which mold to use for mass production according to the output and the complexity of plastic forming. The blister machine heats the raw material coil through the blister forming machine, vacuum blister forming and cooling, and then automatically cuts it into a g...
  • May 27, 2023
    How long does shipping from China take? The number one question most business owners have when considering shipment from China is: how long does it take to get a package from China? Average shipping time from China to us As you might expect, the time a shipment from China takes is dependent on the shipment method you choose. While some express delivery services promise to have the goods at your do...
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