What are the materials of plastic water bottles?
In fact, there are many kinds of materials for plastic water cups in life, and the most common and frequently used plastic water bottles have the advantages of being light and not easy to break. Plastic water bottles can still be used twice in life, and they can be recycled and reused to reduce pollution to society. At present, the common plastic water cup materials are mainly PP, PC or tritan. According to expert surveys, tritan material does not contain any bisphenols, so it can be used safely and boldly. Therefore, the tritan material is very suitable for making plastic water bottles. Personally, I would relatively recommend tritan or PP cups. There are many types of plastics, but the quality varies. Therefore, in general, plastics labeled "Microwave Heating" will be safer;
Bisphenol A is mainly found in polycarbonate (PC) materials and is not widely used in plastic water bottles. Chinese laws and regulations prohibit the use of BPA in baby food containers. PETG material is actually a clear plastic and amorphous copolyester, PC board is a bit different from acrylic, has strong impact modification and does not require pre-drying of such boards before thermoforming. Compared with acrylic or PC board, PETG material has lower molding temperature, shorter cycle time and higher yield. A common comonomer for PETG is 1,4-cyclohexanedimethanol (CHDM), which is well known as polyethylene terephthalate-1. PETG materials are generally collected and are easy to produce with large draw ratios and complex shapes. The product. Extruded sheets of PETG sheet are typically 15 to 20 times stronger than regular acrylics and 5 to 10 times stronger than impact modified acrylics.
PETG can be quickly extruded, blow molded or thermoformed. And the viscosity will be relatively better than acrylic (acrylic). PETG has excellent secondary processing properties and can be modified by conventional processing. PETG can be used in traditional molding methods such as injection molding, extrusion molding, blister molding and blow molding, and can be widely used in markets such as high-performance shrink films, sheets, bottles and profiles. PETG panels will have adequate load-bearing capacity during transportation, processing and use, and help prevent cracking. PETG is the product of the polycondensation of ethylene glycol (eg), benzoic acid (PTA) and 1,4-cyclohexanedimethanol (CHDM). The performance of PETG is different from that of PCT and pet, and has its own unique characteristics. Compared to pet, PETG contains more 1,4-cyclohexanedimethanol comonomer and more ethylene glycol comonomer than PCT. The content of CHDM in PETG is generally 30%-40%. It also has good clarity, viscosity, chemical resistance, color and stress whitening resistance.
