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 moulding packaging, electronics injection moulding, automotive injection moulding 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 moulding, have gradually replaced the mechanical functions of metals.
Polypropylene Injection moulding 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 mouldability 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 moulding 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
- mould Temperature 20-90 °C
PP Plastic Injection moulding Process
The PP plastic injection moulding process involves the manufacturing of products using polypropylene (PP) plastic. PP Mouldtek injection mould maker china specializes in PP injection moulding, offering reliable and efficient solutions. The process begins by melting the PP resin pellets, which are then injected into a mould cavity under high pressure. The molten plastic is cooled and solidified, resulting in the formation of durable and versatile plastic parts. PP plastic injection moulding 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 moulding?
Yes, polypropylene (PP) is an excellent material for injection moulding. 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 mould cavities during injection moulding. 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. PP Mouldtek China specializes in PP plastic injection moulding, offering expertise in designing and producing high-quality PP moulds. PP moulding is commonly used in automotive, packaging, appliances, and other industries due to its versatility and cost-effectiveness.
