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PP Injection Molding

PP Injection Molding

Polypropylene, abbreviated as PP, is a colorless, odorless, non-toxic, translucent solid substance. Polypropylene (PP) is a thermoplastic synthetic resin with excellent properties. It is a colorless, translucent, thermoplastic and lightweight general-purpose plastic. With chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties and good high-abrasion processing properties, etc., this has made polypropylene quickly used in machinery, automobiles, electronic appliances, construction, textile, packaging , agriculture, forestry, fishery and food industry.

In recent years, with the rapid development of China's injection molding packaging, electronics injection molding, automotive injection molding and other industries, it has greatly promoted the development of China's industry. And because of its plasticity, polypropylene materials are gradually replacing wooden products, and high strength and toughness and high wear resistance, which is same with  nylon made by our nylon  plastic injection molding, have gradually replaced the mechanical functions of metals.

Polypropylene Injection Molding Material Properties

Polypropylene is a non-toxic, odorless and tasteless milky white highly crystalline polymer with a density of only 0.90- "0.91g / cm3. It is one of the lightest varieties of all plastics. It is particularly stable to water and absorbs water in water. The rate is only 0.01%, and the molecular weight is about 81.15 million. The moldability is good, but because of the large shrinkage (1% to 2.5%), thick-walled products are easy to sag, and it is difficult to meet the requirements for some parts with high dimensional accuracy , Good surface gloss.

PP Injection Molding Requirement

  • Drying Temperature 60-90 °C

  • Drying Time 2.0-6.0 hr

  • Suggested Moisture Content <=0.20 %

  • Rear Barrel Temperature 200-260 °C

  • Middle Barrel Temperature 210-270 °C

  • Front Barrel Temperature 220-280 °C

  • Nozzle Temperature 230-290 °C

  • Mold Temperature 20-90 °C

PP Plastic Injection Molding Process

The PP plastic injection molding process involves the manufacturing of products using polypropylene (PP) plastic. Feman injection mold maker china specializes in PP injection molding, offering reliable and efficient solutions. The process begins by melting the PP resin pellets, which are then injected into a mold cavity under high pressure. The molten plastic is cooled and solidified, resulting in the formation of durable and versatile plastic parts. PP plastic injection molding is widely used in various industries due to its excellent chemical resistance, high impact strength, and flexibility. It finds applications in automotive components, household appliances, packaging, medical devices, and more, providing cost-effective and reliable solutions.

Is PP Good For Injection Molding?

Yes, polypropylene (PP) is an excellent material for injection molding. It possesses several desirable characteristics that make it suitable for a wide range of applications. PP has good flow properties, allowing for easy and efficient filling of the mold cavities during injection molding. It exhibits high impact resistance, making it durable and suitable for various demanding environments. PP also has excellent chemical resistance, which is beneficial for applications that involve exposure to different substances. Feman China specializes in PP plastic injection molding, offering expertise in designing and producing high-quality PP molds. PP molding is commonly used in automotive, packaging, appliances, and other industries due to its versatility and cost-effectiveness.

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