About PET Raw Material
PET stands for polyethylene terephthalate. It's a kind of thermoplastic polymer resin.
PET plastic is clear, tough, and has good gas and moisture barrier properties. It's widely used in the manufacture of beverage bottles, food containers, and other packaging materials because it can help keep the contents fresh.
It's also used to make synthetic fibers. For example, polyester fibers in clothing are often made from PET. These fibers are durable and wrinkle - resistant.
In addition, PET is recyclable. Recycling PET helps reduce waste and the demand for new raw materials.
What Kind of Product Is Made By PET Material?
PET (polyethylene terephthalate) is a very versatile material and is used to make a wide range of products:
Packaging
• Beverage Bottles: Commonly used for water bottles, soft drink bottles, and juice bottles. Its excellent barrier properties keep carbon dioxide (in carbonated drinks) and oxygen out, helping to maintain the quality and freshness of the beverages.
• Food Containers: Such as containers for salad dressings, sauces, and peanut butter. The transparency of PET allows consumers to see the contents, and its safety makes it suitable for food contact.
• Cosmetic and Toiletries Packaging: Used for bottles of shampoo, lotion, and other personal care products.
Textiles
• Polyester Fibers: PET is used to produce polyester fibers for clothing, bedding, and upholstery. Polyester clothing is known for its durability, wrinkle - resistance, and quick - drying properties. It's used to make everything from shirts and pants to sportswear and outdoor gear.
Other Applications
• Electronics: Some small electronic components and casings may use PET due to its insulating and protective properties.
• Automotive: Can be used in the manufacturing of certain interior parts, like headliners and seat covers, where its durability and flexibility come in handy.
Moulds of PET Products
PET (polyethylene terephthalate) product molds play a crucial role in shaping various PET items.
Injection Molding MoUlds
• Used for: Manufacturing small, solid PET products such as some electronic component casings made of PET. In injection molding, molten PET is injected into a mold cavity under high pressure.
• Mold Design: The molds need to have precise gates (the entry point for the molten material) to ensure even filling of the cavity. The cooling channels in the mold are designed to cool the PET quickly and uniformly to achieve the desired shape and mechanical properties.
Blow Molding MoUlds
• Used for: Creating hollow PET products, especially bottles and containers. In blow molding, a parison (a pre - formed tube - like structure of PET) is placed in the moUld and then inflated to take the shape of the mold cavity.
• Mold Features: The moulds have a split - design that allows the easy removal of the finished hollow product. They also need to provide a consistent thickness distribution during the blowing process. The inner surface of the mould determines the outer shape and finish of the PET bottle or container.
Thermoforming Moulds
• Used for: Forming thin - walled PET products such as trays and blister packs. In thermoforming, a flat PET sheet is heated until it's pliable and then drawn into the mould cavity using vacuum or pressure.
• Mould Considerations: The molds for thermoforming usually have a female cavity with a textured or smooth surface depending on the desired finish of the product. Vent holes are an important part of the mold design to ensure proper air evacuation during the forming process to achieve a well - formed product.