Overview
Coated plastic bags are engineered packaging materials featuring a thin polymer or metallic layer applied to a base plastic film (typically PE or PP). This coating enhances functional properties such as moisture resistance, gas barrier performance, and durability. They are a critical solution for industries requiring extended shelf life or protection from environmental factors. Initially developed as an upgrade to standard plastic bags, modern variants incorporate multi-layer laminates or vacuum-deposited coatings (e.g., aluminum) for specialized applications like medical sterilization or chemical storage.
Product Features
The primary advantage of coated bags lies in their tailored barrier properties. For instance, aluminum-coated bags block UV light and oxygen, while EVOH-coated variants excel in aroma retention. Heat-sealable coatings ensure airtight closures, crucial for perishable goods. Customizability is another key feature, with options for anti-static coatings, printable surfaces, and varying thicknesses (commonly 50–200 microns). High-clarity coatings maintain product visibility, whereas metallized finishes offer a premium aesthetic for retail packaging.
Main Uses
In the food industry, these bags preserve freshness for snacks, coffee, and frozen goods. Pharmaceutical applications include blister pack backing and sterile device packaging, where coatings meet ISO 13485 standards. Industrial uses span electronics (ESD-safe coatings), agriculture (silage storage), and chemicals (corrosion-resistant liners). Their lightweight nature reduces shipping costs compared to rigid alternatives like glass or metal containers.
Culture and Development
The shift toward sustainable coatings is reshaping the market, with bio-based polymers (e.g., PLA coatings) gaining traction. Regulatory pressures, such as EU single-use plastic directives, drive innovation in recyclable mono-material coatings. Historically, Japan pioneered high-barrier coatings for instant noodles in the 1970s, while recent advances include active coatings that release preservatives or absorb ethylene to extend food freshness.
B2B Procurement Guide
Bulk buyers should specify coating thickness (measured in µm) and barrier metrics (e.g., oxygen transmission rate <5 cc/m²/day for sensitive products). MOQs typically start at 10,000 units, with lead times of 2–6 weeks for custom designs. Partner with suppliers certified for ISO 9001 and relevant industry standards (e.g., BRCGS for food). Sample testing under real-world conditions (e.g., accelerated aging) is recommended before large orders.
Related Manufacturers
- 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tpu、HDPE
- 主营：云天化pom、美国杜邦pom、日本宝理pom、日本旭化成pom、德国巴斯夫tpu、科思创tpu、奇美abs、德国朗盛pa66、美国首诺pom、泰科纳pom、韩国可隆pom、韩国工程pom、韩国乐天pc、日本三菱pom、PPO、沙伯基础pc/abs、法国阿科玛pvdf、PPA、云天化POM m90、美国陶氏poe、埃克森美孚poe、云天化聚甲醛、pom云天化m90、LCP、PTFE
- 主营：pps加纤、pbt树脂、abs塑胶、脱模pom、abs塑料、透明abs、聚丙烯、pps玻纤、阻燃abs、pp李长荣、聚乙烯pe、工程塑料、耐水解psu、PC原料、LDPE原料
- 主营：塑料颗粒、PA6、POM、PC/ABS、日本宝理pps、PBT、Pom100p、Pom500p、Pom900p、M90-44、F20-03、ABS747、abs757、美国杜邦、德国巴斯夫、日本宝理pom、ASA、PMMA、PEEK、PCTG、PPA、PPSU、PVDF、POE、乐天PC-1100
- 主营：pbt-330lc、工程pom、拜耳tpu、pa66-gf30、热熔胶、pom-tfc64、pom-ld755、高耐热、pom-500af、玻璃珠、pc-pc1800、母粒-pp、吹薄膜、pbt-303ra、pa66-r228、pbt-420hp、pom-te-24、宝理pom、耐划伤、pom-gn705、pom-lt350、pbt-3100h、pp-mf650y、pom-100st、pom-z4513
- 主营：EVA、PP、PC、PA6、PA66、POM聚甲醛、ABS、PPS、PE、PETG、PMMA、PBT
- 主营：Pa66、通用塑料、工程塑料、聚丙烯、聚乙烯、POM、聚甲醛、亚克力、弹性体、EVA
- 主营：EVA塑料、POM塑料、POM均聚、POM共聚、杜邦100P、杜邦500P、尼龙PA6-PA66、PMMA亚克力、聚碳酸酯pc、ABS塑料、科思创2805、PC/ABS合金料、透明尼龙12
- 主营：Pom美国杜邦、日本宝理pom、旭化成pom、Pom100p、Pom500p、Pom900p、M90-44、F20-03、ABS747、abs757、LCP、PA6T、PA9T、POE、PBT、PVDF、PETG、COC、HIPS、TPEE、TPU、TPV、日本旭化成pom、美国杜邦pom
- 主营：EPS粒子、相容剂、增韧剂、涂覆级PP、液体橡胶、粉末丁腈橡胶、功能助剂、工程塑料、部分通用塑料
- 主营：矿用设备、铁路设备、救援装备、防爆电器、路面机械、工程机械
- 主营：线性pe料、塑料原料、塑胶颗粒、原料颗粒、塑胶原料、塑料颗粒、ABS原料、聚丙烯pp、低压高密度聚乙烯HDPE、PA尼龙原料、POM聚甲醛原料、PC聚碳酸酯原料、PBT原料、PCTG原料、POE增韧弹性体、EVA原料、SURLYN沙林树脂、铁氟龙特种工程塑料、PBT巴斯夫、PBT美国杜邦、PCABS 沙伯基础、岳化尼龙PA6、瑞士EMS尼龙PA6、POE埃克森、聚碳酸酯原料
- 主营：聚乙烯、密封条、工程塑料、涂覆级LDPE、食品包装、通用塑料、管件袋子、照明灯具、电子电器、套管垫片、电线电缆、电子电气、橡胶塑料、电视外壳、电器用具、运动器材、食品级pctg、抗静电hips、聚丙烯粉料、电动照明工具、家具塑胶原料、家庭日用品电气
- 主营：POM、ABS、PC、PP、德国巴斯夫、日本宝理、韩国SK、PA66
- 主营：不锈钢储罐、陶瓷过滤机、冷凝水回收装置、玻璃钢罐、冷凝器、离心机、压滤机