Chinese plastic molding manufacturer perhaps to traditional copolyester Tritan is not strange, although they have many advantages, they also contain BPA, but Tg is not high (85 DEG C), cannot fully meet the requirements of high-temperature resistance, so it can not completely replace the PC. A new generation of copolyester Tritan not only fully inherits the advantages of traditional copolyester, and higher temperature, easy processing.
The advantages of Tritan:
1). Injection molding material contains no BPA
Tritan no BPA components in the polymerization process, in the use of the process will not release BPA, meet the requirements of environmental protection and FDA.
2). Clear light transmittance ratio > 90%, haze < 1%, crystal-like luster.
3). Impact strength excellent unnotched impact constantly, notch impact strength for different brands of between 650-980J/m, the impact strength is comparable to PC.
4). Anti-aging, anti hydrolysis properties of Tritan can resist detergent, cleaning agent, hydrocarbon solvents, oils, perfumes and other corrosion excellent; can resist hydrolysis in a hot and humid environment.
5). High-temperature resistance and low voltage heat distortion temperature (HDT @ 0.455MPa) according to the different brands of between 94 DEG -109 deg.
6). Good fluidity test conditions in the 2.16kgf pressure and 280 DEG C, melt temperature conditions, melt index (MI) according to the grade of different between 15.3-29.5.
7). Easy plastic molding manufacturing
Tritan grade available injection (injection), extrusion (extrusion), extrusion blow (EBM), injection stretch blow molding (ISBM) processing of various methods such as. In general, the normal production can die with PC, no need to change is available Tritan to production, the production cycle time is very close to them.
8). Including two easy processing methods can be applied to the processing of Tritan two: UV glue bonding, ultrasonic welding, surface printing paint, surface vacuum plating, etc..
9). Product small residual stress after injection molding, the product of residual stress is smaller than PC, no longer need to do the following annealing. Products in use process due to residual stress cracking less chance, so Tritan manufactured products are more durable. The market application of Tritan: Tritan is a new generation of copolyester, after years of research and development of Eastman, has entered the commercial application stage. The brand has become a system oneself, to meet the diverse needs of the market. Eastman first on the market in Europe and America for the popularization and application of Tritan with environmental protection, easy processing, and excellent quality, caused a positive response to the European and American markets and achieved great success.
Generally speaking, Tritan can be applied to all market applications than traditional copolyesters. Here, we will show to focuses on the market application of replacing PC by case.
Case 1: Camelbak outdoor sports bottle
traditional outdoor sports bottles generally use the PC injection molding production of the bottle body, but because of the PC BPA problem, Camelbak decided to use Tritan instead of PC bottle production. Strength, transparency of Tritan bottles is still, however, can keep the PC bottle level, the original production of PC mold making, injection molding machine are not modified, so Camelbak company didn’t add investment because of replacement of materials and production equipment. While the outdoor sports bottle products use of Eastman Tritan which is a new environmental protection material, it has a leading market advantage.
Case 2: Evenflo baby bottle
baby bottle traditional transparent general use PC production, a lot of families often cleaned or sterilized for a bottle with boiling water or a dishwasher, but PC in hot and humid conditions more susceptible to hydrolysis and the release of BPA, so the bottle manufacturers have had to give up the production of the bottle with PC. Some mold manufacturers to switch to PSU or PES, but the cost is very expensive; some to PP, but the bottle is a translucent effect. Evenflo uses Eastman Tritan production of the bottle, not only cost is changed little, and the products are welcomed by the market.
Case 3: Vita-Mix Mixer Blender or food Juicer general PC do with the transparent cup, also due to the problem of BPA, some manufacturers have to use more low-end SAN or PMMA, but the grade of products significantly reduced. Vita-Mix uses Tritan instead of PC, no need to change the original injection mold making and injection molding machine to normal production, the production cost of little change. At the same time as the Tritan cup body residual stress is small, the product life longer than PC.