Overview
Copolyester plastic raw material is a modified form of polyethylene terephthalate (PET) where glycol modifiers like cyclohexanedimethanol (CHDM) are incorporated into the polymer chain. This modification enhances properties such as clarity, toughness, and processability compared to standard PET. Primarily supplied as pellets or granules, it is compatible with injection molding, extrusion, and thermoforming. Its balanced performance makes it suitable for replacing glass, polycarbonate, or acrylic in demanding applications while maintaining recyclability.
Physical and Chemical Properties
The material exhibits excellent optical clarity (up to 90% light transmission) and UV resistance, making it ideal for transparent packaging. Its impact strength is 10-15 times higher than standard PET, with a notch-free fracture behavior. Chemically, it resists oils, alcohols, and weak acids but may degrade in strong alkalis or polar solvents. The glass transition temperature (Tg) ranges between 80-100°C, depending on the copolymer composition. Moisture absorption is low (0.2-0.3%), but pre-drying is recommended before processing.
Main Applications
In packaging, it dominates the production of clamshell containers, blister packs, and cosmetic bottles due to its shatter resistance and aesthetic appeal. The medical industry utilizes it for surgical trays and device components sterilizable by gamma radiation. Emerging uses include 3D printing filaments (PETG) and outdoor signage, where weatherability is crucial. Textile applications incorporate copolyester fibers for durable, wrinkle-resistant fabrics. Its FDA compliance expands its use in food-contact items like microwaveable trays.
Safety and Storage
While generally recognized as safe, processing at high temperatures (>280°C) may release trace acetaldehyde. Adequate ventilation is advised in manufacturing environments. The material is not classified as hazardous under GHS standards. Storage requires moisture-proof packaging with desiccants to prevent hydrolysis. Pallets should be kept away from heat sources and direct sunlight. Shelf life typically exceeds 12 months when stored below 30°C with relative humidity under 50%.
B2B Procurement Guide
Key specifications to evaluate include intrinsic viscosity (IV: 0.7-1.0 dl/g), color index (L* value >90 for clear grades), and residual acetaldehyde content (<4 ppm for food-grade). Request certificates for ISO 10993 (biocompatibility) if used in medical applications. Bulk shipments (20-25 metric tons) typically offer 5-8% cost savings. Consider regional suppliers in Asia for cost efficiency or local distributors for just-in-time delivery. Always audit suppliers for QC systems like ISO 9001 and batch traceability.
Related Manufacturers
- 主营：PC聚碳酸酯、尼龙6、尼龙66、PEEK塑胶原料、LCP塑胶原料、POK塑胶原料、EVA塑胶原料、PCTA塑胶原料、POM聚甲醛、ABS通用料、PPS聚苯硫醚、PPSU聚苯砜、PA6德国B3WG6、PMMA亚克力、PA6德国B30S、PC/ABS合金料、PFA AP-210、AC3100、PA66杜邦101L、TPU1185A10、TPU 1190A、TPEE杜邦6356、SURLYN沙林料、COC E48R、POM 100P塑料
- 主营：粘接剂、树脂粉、abs韩国、pvc塑胶、抗紫外线塑胶、纯圆棒、pok韩国、asa韩国、加铁氟龙、ppa长碳纤、abs合金料、纤导电pom、pa6长碳纤、长纤塑料、紫外线pok、塑料颗粒、分子pe粉末、韩国lg塑料、加石墨填充、食品级树脂、灰黑色塑料、导电防静电、防静电塑料、酰亚胺棒材、聚酰亚胺树脂
- 主营：POM、PA6、PA66、PC、PP
- 主营：PP、PC、PBT、ABS、POM、EVA、PE、PA6、LDPE、TPEE、TPU、PA66、LLDPE、PA46、EAA、PPO、PMMA、PET
- 主营：高尔夫球、沙林树脂、沙林塑料、易加工共聚聚酯、沙淋树脂、香水瓶盖、沙林流延薄膜
- 主营：玻璃矿物、PMMA亚克力、PA9T工程塑料、POM塑胶原料、PA66塑胶原料、LCP塑胶原料、PA12塑胶原料、PA6塑胶原料、ABS塑胶原料、PC/ABS塑胶原料、PPO塑胶原料、TPEE塑胶原料、PBT工程塑料、沙林料、PC塑料、PVA降解塑料、TPU弹性体
- 主营：PPS、PPA、PA66、PBT、PC/ABS、PC、PA12、PEEK、LCP、PPSU
- 主营：工程塑料、通用塑料、热塑性弹性体、塑胶原料、合金塑料、特种塑料
- 主营：聚丙烯PP、聚甲醛POM、聚碳酸酯PC、塑胶颗粒、ABS、PC/ABS、PA6、PA66、EVA、PCTG、PVDF、POE、工程塑料、TPU、中石化、台塑、旭化成、杜邦、宝理、韩国LG、PMMA、PA12、燕山石化
- 主营：尼龙料、均聚物、沙伯基、齿轮料、紧固件、聚甲醛、子电气、高耐磨、PC、POM、PA66、POE、ABS、PCTG、PETG、PA12
- 主营：PCTG、TPX、LDPE、耐化学塑胶原料、PA6T
- 主营：杜邦pom、pfa透明、阻燃ppsu、fep原料、pa12原料、仁集塑胶、塑胶原料、耐磨pvdf、etfe乳液、铁氟龙fep、pmma亚克力、ppsu耐高温、威格斯peek、抗静电性pfa、pbt日本宝理、pes琥珀透明、聚砜塑料psu、etfe日本大金、pctg韩国skjn200、电线电缆级pc、pa6德国巴斯夫、注塑级半透pa6、pvdf6010美国苏威、电子电器应用coc