Overview
Barrier polyester represents an advanced class of polyethylene terephthalate (PET) engineered with enhanced impermeability characteristics. Unlike standard polyester, these materials incorporate specialized molecular structures or nanocomposite additives that significantly reduce gas and vapor transmission rates. The development of barrier polyesters responds to growing industry demands for extended product shelf life and protection against environmental factors. Manufacturers achieve barrier properties through various methods including copolymerization, surface coatings, or multilayer co-extrusion technologies.
Physical and Chemical Properties
Barrier polyesters maintain the fundamental properties of PET while demonstrating exceptional resistance to oxygen (OTR <5 cc/m²/day) and water vapor (WVTR <2 g/m²/day). The materials exhibit excellent dimensional stability across a broad temperature range (-40°C to 150°C), making them suitable for demanding applications. Chemical resistance includes withstanding acids, alkalis, and most organic solvents. The inherent clarity of certain grades allows for product visibility in packaging applications, while modified versions can provide complete light blockage when required.
Main Applications
The food packaging industry accounts for approximately 60% of barrier polyester consumption, particularly for oxygen-sensitive products like coffee, snacks, and ready meals. Pharmaceutical applications utilize the material for blister packs and diagnostic device packaging where moisture protection is critical. In electronics, barrier polyester films protect sensitive components from atmospheric moisture. Emerging applications include flexible solar cell substrates and lithium-ion battery separators, where the material's dielectric properties and dimensional stability provide significant advantages.
Safety and Storage
Barrier polyesters are generally recognized as safe for food contact when complying with FDA 21 CFR or EU 10/2011 regulations. Processing temperatures should be carefully controlled to prevent thermal degradation, which may release acetaldehyde. Material storage requires protection from moisture absorption, which can affect processing characteristics. Industrial quantities are typically supplied in moisture-proof bags with desiccants, while bulk storage silos should maintain relative humidity below 30%.
B2B Procurement Guide
Industrial buyers should specify the exact barrier performance requirements, including test conditions (temperature, humidity) and measurement standards (ASTM D3985 for OTR, ASTM F1249 for WVTR). Consider the processing method (injection molding, thermoforming, extrusion) as different grades are optimized for specific techniques. Supply chain considerations include minimum order quantities (typically 5-20 metric tons for standard grades) and lead times (4-8 weeks for specialized formulations). Many manufacturers offer technical support for application development, including prototype testing and regulatory documentation assistance.
Related Manufacturers
- 主营：PEN、CBC、PTT、PA6、PA66、PES、PVDC、PA12、TPU、PMMA、EPDM、PET、PP、PE
- 主营：玻璃矿物、POM塑胶原料、PA66塑胶原料、TPU弹性体、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、PMMA亚克力、PA9T工程塑料、PBT工程塑料、沙林料、PC塑料、PVA降解塑料、TPEE塑胶原料
- 主营：PC聚碳酸酯、PEEK塑胶原料、尼龙6、PCTA出色的阻隔性、尼龙66、POM聚甲醛、LCP塑胶原料、POK塑胶原料、EVA塑胶原料、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、PCTA塑胶原料、TPU1185A10、TPU 1190A、TPEE杜邦6356、SURLYN沙林料、COC E48R、POM 100P塑料
- 主营：PA12、POM、PC、PCTA出色的阻隔性、PA66、PTFE、PFA、ETFE、PBT、TPEE、PA11、TPV、EVA、PPSU
- 主营：POM杜邦500P、POM低声无噪音、PC高冲击、PCTA美国伊士曼共聚酯、PET杜邦FR515、ABS电镀级、ABS高流动PA-765A、塑胶原料、PC沙伯基础创新、PC耐寒、PC耐油、PCABS阻燃无卤V0、PPS日本宝理1140A6、PC科思创拜耳FR6002、PCABS科思创FR2000、PPS日本宝理1140L4、PPS日本宝理1140A1、PPS菲利普R-4-200NA
- 主营：镀铝膜、镀铝薄膜、复合材料、镀铝复合膜、复合膜定制、工业包装膜、食品包装材料
- 主营：POM、PBT、PC、PC/ABS、PCTG、LCP、PPA、PPS、PETG、PCTA
- 主营：POE、OBC、TPEE、POM、PBT、PC、PC/ABS、PA66、PA6、PA12、PA9T、PET、PPS
- 主营：PVDF、PTFE、PFA、热塑性弹性体、SURLYN沙林、EVA、PA6、PA66、PC、PCTG、PEBA、ASA、PTB、PPO、LCP、PCTA、PETG、POM、EAA、特种工程塑料、合金塑料、通用塑料
- 主营：POM、PA66、TPU、PVDF
- 主营：sbs改性沥青材料防水、防水涂料、防水卷材
- 主营：铝溶胶、硅溶胶、磷酸二氢铝、绝缘性好、油酸钠、油酸钾、十八胺、甲酸钠、硫酸氢钠、碳酸铵、尿素硝铵溶液、硝酸铵钙、碳酸亚铁、甲基硅酸、二氧化硫脲、氟硅酸镁、二羟甲基丙酸、葡萄糖酸钠、二甲基甲酰胺、四氯乙烯、正丁醇、大苏打、硝酸铁、油酸甲酯
- 主营：丙纶防水卷材、sbs防水卷材、tpo防水卷材、pvc防水卷材、防水涂料
- 主营：sbs防水卷材、TPO防水卷材、PVC防水卷材、自粘聚合物改性沥青防水卷材、热塑性聚烯烃TPO防水卷材、聚氯乙烯PVC防水卷材、聚氨酯防水卷材、app防水卷材、丙纶防水卷材、涤纶防水卷材、非沥青基自粘胶膜、HDPE防水卷材、三元乙丙橡胶防水卷材
- 主营：PP、ABS、PA66、TPU、TPV、PBT、PC、POM、PPO、PC/ABS
- 主营：液体卷材、防水卷材
- 主营：防火abs、PP、尼龙、HDPE、LDPE、巴塞尔、晓星、台塑、大林
- 主营：耐高温材料、LCP、尼龙原料、PPA、PC、PC/ABS、PPS、EVA、PP、POM、POE、PA6、PA66、TPU、PET、ABS、聚丙烯、PA12、PBT、PPO、PPE、合金料、LDPE、万华化学、HDPE
- 主营：防水防腐涂料、保温隔热涂料、隔音涂料、SBS改性沥青防水卷材、屋面防水涂料、室内防水涂料、陶瓷微珠保温隔热涂料、气凝胶绝热保温涂料、反辐射隔热防水涂料、污水池防腐涂料
- 主营：sbs防水卷材、自粘防水卷材、非沥青基自粘胶膜防水卷材、自粘聚合物改性沥青防水卷材、弹性体改性沥青防水卷材、tpo防水卷材、pvc防水卷材、丙纶防水卷材、水泥基渗透结晶防水涂料、非固化防水涂料、涤纶防水卷材、聚合物水泥基js防水涂料、反应粘防水卷材、app防水卷材、乳化沥青、丙烯酸防水涂料、丁基防水胶带、聚脲防水涂料、液体卷材、合成高分子防水涂料、金属屋面防水涂料、强力交叉膜防水卷材、聚氨酯防水涂料、耐根穿刺防水卷材
- 主营：乙二醇、戊二醛、环己酮、异丙醇、二甲苯、安息油、清洗剂、正丁醇、醋酸丁酯、二氯丙烷、三氯乙烯、醋酸甲酯、无水乙醇、二氯甲烷、二氯乙烷、环保溶剂、金属洗涤剂、醋酸仲丁酯、涂料稀释剂、碳酸二甲酯、油墨稀释剂、环保化工溶剂、无色透明液体
- 主营：紫铜片、止水铜片、紫铜止水片、抗裂纤维、聚丙烯纤维、聚乙烯醇纤维、沥青木丝板、沥青木板、沥青杉木板、沥青杉板、沥青木屑板、沥青麻绳、沥青麻丝、沥青麻筋、沥青麻絮、沥青麻布
- 主营：防水涂料、隔热保温涂料、家装补漏、SBS改性沥青卷材、翻新隔热、防腐防水涂料、防水卷材、保温凝胶、路桥防水、吸音隔音涂料
- 主营：塑料原料、工程塑料、美国杜邦、PBT、德国巴斯夫、德国朗盛、PA66、PC+ABS、PET、韩国LG、日本旭化成、PC、尼龙PA、POM、PPO、PPS、奇美abs、PA6、TPU、POM100p、POM500p、pom900p、pc1100、pc/abs、日本宝理pom