Overview
Plastic raw materials for containers encompass a range of thermoplastic polymers engineered for packaging applications. These include polypropylene (PP), polyethylene terephthalate (PET), high-density polyethylene (HDPE), and low-density polyethylene (LDPE). Each polymer offers distinct advantages, such as PP's heat resistance for microwaveable containers or PET's clarity for beverage bottles. The global demand for container-grade plastics continues to grow, driven by their lightweight nature, cost-effectiveness, and recyclability. Manufacturers often compound these base polymers with additives like UV stabilizers or antistatic agents to enhance performance for specific use cases, such as outdoor storage or electronic component packaging.
Physical and Chemical Properties
Container-grade plastics exhibit low moisture absorption (0.01–0.5%), making them ideal for liquid packaging. Their tensile strength ranges from 20–60 MPa, with PET and HDPE offering superior rigidity for stackable containers. Oxygen barrier properties vary significantly—PET provides excellent CO2 retention for carbonated drinks, while LDPE is preferred for its flexibility in squeeze bottles. Chemically, these materials resist acids, alkalis, and alcohols but may degrade under prolonged exposure to hydrocarbons or chlorinated solvents. Thermal stability is polymer-specific; for example, PP containers withstand autoclaving at 121°C, whereas PET distorts above 70°C. UV-stabilized grades are available for outdoor applications to prevent yellowing and embrittlement.
Main Applications
In food packaging, HDPE dominates milk jugs and detergent bottles due to its stiffness, while PET is standard for water and soda bottles owing to its gas barrier properties. PP containers are ubiquitous in microwaveable meal trays and yogurt cups, leveraging their 160°C heat deflection temperature. Industrial applications include chemical drums (HDPE), pharmaceutical blister packs (PVC), and agrochemical containers (cross-linked PE). Recent innovations include monolayer PET beer bottles with oxygen scavengers and PP-based transparent containers rivaling glass clarity. The medical sector utilizes gamma-ray-sterilizable polycarbonate (PC) for specimen containers.
Safety and Storage
Food-contact plastics must comply with FDA 21 CFR or EU 10/2011 regulations, requiring migration testing for heavy metals and monomers. Bisphenol-A (BPA) free grades are now standard for polycarbonate alternatives. Storage recommendations include maintaining materials below 40°C with <50% relative humidity to prevent moisture absorption in hygroscopic polymers like PET. Processors must ensure proper ventilation during injection molding to avoid fume inhalation. Post-consumer recycled (PCR) content usage follows strict guidelines—for instance, FDA permits up to 100% PCR-HDPE in non-food containers but limits food-contact applications to 25–50% depending on purification processes.
B2B Procurement Guide
Key specifications to request include melt flow index (MFI: 2–50 g/10min for most container applications), notched Izod impact strength (>50 J/m for durable goods), and FDA/EC compliance documentation. For sustainable procurement, inquire about bio-based alternatives like PLA or PHA, though these currently command 20–30% price premiums. Bulk buyers should negotiate quarterly contracts linked to ethylene/propylene feedstock indices to mitigate price volatility. Regional considerations apply—Asian suppliers dominate PET resin production, while North America leads in HDPE due to shale gas ethane supplies. Always audit suppliers for ISO 9001 certification and batch traceability systems.
Related Manufacturers
- 主营：[]
- 主营：[]
- 主营：通用塑料、工程塑料、特种塑料
- 主营：PA66、POM、PA6、TPU
- 主营：PEI、POM、PA6、容器用应用EAA、PA66、PPS、LCP、工程塑料、PPO、POE、TPU、COC、EVA
- 主营：工程塑料
- 主营：tpu、Eva、Pom、塑胶原料LCP、Pa66、Lcp、Pa6t、Pa9t、Pa6、Poe、Hdpe、Ldpe、Lldpe、Pc、Hips、Pbt、Pctg、Pc/abs、Abs、pp、Ppsu、Pps、Para、Tpee、Pa612、Pa12
- 主营：ABS、PC、POM、塑胶原料LCP、TPU、PP、LCP、PBT、PMMA、Pom100p、Pom900p、Pom500p、M90-44、F20-03、ABS747、ABS757、PEEK、PVDF、PPSU、PPA、PARA、PCTG、PA9T、Pa12、COC
- 主营：pps加纤、pbt树脂、脱模pom、abs塑胶、PC原料、LDPE原料、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
- 主营：POM、PA66、PC、HDPE网织品应用原料、Pom100p、Pom500p、Pom900p、Pom100t、M90-44、F20-03、ABS747、abs757、TPU、美国杜邦pom、日本旭化成pom、日本宝理pom、ASA、COC、PEEK、PVDF、PCTG、PCTA、PA612、Pa6t、Pa9t
- 主营：F20-03、m90-44、m90-45、聚甲醛原料、PC-1100、pom100p、pom500p、pom900p、云天化pom、宝理pom、旭化成pom、杜邦pom、巴斯夫pa66、杜邦pa66、聚丙烯pp、埃克森美孚POE、美国苏威PPSU、科思创PC、沙伯基础PC、李长荣聚丙烯、路博润TPU、埃克森ldpe、巴塞尔ldpe、韩华ldpe、日本三菱pom
- 主营：聚烯烃、机械仪器、工业壳体、HDPE网织品应用原料、升级透明聚丙烯
- 主营：pom、杜邦pom、宝理pom、赛钢聚甲醛原料、旭化成pom、巴斯夫、pom100p、聚甲醛共聚物、pom500p、pom900p、奇美abs、浙石化、中石化、pvdf、PCTG、PARA、沙伯基础、pmma、pps、日本东丽pa66、云天化、科思创TPU、陶氏POE、埃克森美孚POE、美国苏威
- 主营：镜片料、聚苯砜、聚丙烯、HDPE网织品应用原料、聚甲醛、PA66、PA6、PPS、PBT、POM100p、Pom500p、Pom900p、M90-44、F20-03、pa9t、TPU、PPSU、PEEK、PVDF、PPA、PMMA、HIPS、LDPE、HDPE、赛刚pom
- 主营：高尔夫球、沙林树脂、沙林塑料、PETG无定形薄膜级原料、沙淋树脂、香水瓶盖、沙林流延薄膜
- 主营：POM 100P、PA66杜邦系列、POM 500P 杜邦、HDPE网织品应用原料、PC 2805科思创、PA66旭化成、沙比克pmmap20mh、Hips、PMMA、PMMA 20HR、Tpu、Pa46、Pa66、Hdpe、Ldpe、Poe、Eva、Lcp、Pbt、PP、Abs、Asa、Pctg、Para、PEEK
- 主营：POM美国杜邦、PA66杜邦、TPV塞拉尼斯、HDPE网织品应用原料、PPA瑞士EMS、ABS台湾奇美、EMA韩国sk、PETG韩国sk、PC沙伯基础、COC德国TOPAS、POK韩国晓星、PA6巴斯夫、EBA西班牙雷普索尔、EVA美国杜邦、PA12瑞士EMS、TPU德国巴斯夫、PARA比利时索尔维、PPO沙伯基础、PPS日本东丽、PPSU索尔维、PES美国索尔维、PSU索尔维、PCTG美国伊士曼、HDPE利安德巴塞尔、PMMA韩国LG、pcabs台化
- 主营：PA66、PA6、POM、塑胶原料、PC/ABS、PET、PPS、尼龙、PBT、PPA、PP、ABS、PC、道默PA66、罗地亚PA66、PCTG、PETG、POK、HIPS、工程塑料、PC/PBT、PCTA
- 主营：塑胶原料