Overview
High transparency soft PVC raw material is a formulated polyvinyl chloride compound modified with plasticizers and stabilizers to achieve exceptional clarity while maintaining flexibility. Unlike rigid PVC, this material contains 30-60% phthalate or non-phthalate plasticizers by weight, allowing for bendable applications without whitening or stress cracking. The formulation typically includes optical brighteners and impact modifiers to enhance transparency, achieving light transmission rates comparable to some engineering plastics. Developed as an alternative to rubber and silicone in see-through applications, this material combines PVC's cost-effectiveness with specialized processing characteristics. It undergoes compounding through twin-screw extrusion to ensure homogeneous dispersion of additives, with strict control of particle size and thermal history to prevent haze formation. Major producers offer customized formulations for specific processing methods like injection molding, calendering, or extrusion.
Physical and Chemical Properties
The material exhibits a unique balance of transparency (≥90% visible light transmission) and elasticity (elongation at break 200-400%). Its refractive index (1.52-1.55) can be adjusted through plasticizer selection to match application requirements. Thermal properties vary significantly by formulation, with Vicat softening points typically between 60-80°C for standard grades. Chemically, soft PVC maintains PVC's inherent resistance to acids, alkalis, and alcohols but becomes more susceptible to hydrocarbon solvents due to plasticizer migration. Key performance metrics include yellowness index (<2.0 for premium grades), tensile strength (10-20 MPa), and continuous use temperature (-20°C to +60°C). Advanced formulations incorporate UV stabilizers for outdoor applications, preventing the characteristic yellowing of conventional PVC over time.
Main Applications
Medical applications dominate the high-end market, where the material is used for IV tubing, dialysis equipment, and clear surgical drapes requiring USP Class VI or ISO 10993 certification. Food contact applications include transparent cling films, bakery product packaging, and beverage tubing, complying with FDA 21 CFR or EU 10/2011 standards. Consumer goods utilize this material for inflatable toys, clear shower curtains, and protective sleeves where clarity and soft touch are prioritized. Industrial applications include see-through conveyor belts for food processing, flexible window panels, and transparent protective covers for machinery. Emerging uses include augmented reality device components and flexible display substrates where optical properties rival more expensive thermoplastics.
Safety and Storage
Proper handling requires attention to plasticizer content - certain phthalates (e.g., DEHP) are restricted in children's products and medical devices under REACH and CPSIA regulations. Non-phthalate alternatives like DOTP or DINCH are increasingly specified, though at higher cost. Thermal degradation during processing releases HCl gas, necessitating adequate ventilation and corrosion-resistant equipment. Storage should prevent plasticizer migration by keeping materials in original sealed containers below 30°C. Bulk bags require palletization to avoid compression-induced clumping. Shelf life is typically 12 months when stored properly, though some specialty formulations may have shorter validity periods. Moisture absorption is minimal but can affect processing, recommending pre-drying at 60-80°C for 2-4 hours before use in sensitive applications.
B2B Procurement Guide
Industrial buyers should specify seven critical parameters: plasticizer type/content (e.g., 40% DINP), transparency grade (measured by ASTM D1003), regulatory certifications (FDA, ROHS, REACH), Shore hardness, thermal stabilizer package, processing method compatibility, and color stability requirements. Sample evaluation should include accelerated aging tests under UV and heat exposure. Leading manufacturers include Shin-Etsu, Formosa Plastics, and Ineos, with regional suppliers offering competitive pricing for standard grades. MOQs typically start at 5-20 tons for custom formulations, with price breaks at 50-ton increments. Just-in-time delivery is advisable due to plasticizer volatility in the market. Quality control should verify lot-to-lot consistency in haze measurement (≤5% for premium grades) and extrusion flow rates.
Related Manufacturers
- 主营：液体阻燃剂、无卤液体阻燃剂、透明液体阻燃剂、pvc液体阻燃剂、环保液体阻燃剂、液体阻燃剂厂家、磷酸酯液体阻燃剂、环氧树脂液体阻燃剂、pu液体阻燃剂、聚氯乙烯液体阻燃剂、聚氨酯液体阻燃剂、PVC阻燃剂、PVC透明阻燃剂、PVC环保阻燃剂、环保阻燃剂、无卤阻燃剂
- 主营：超细硅酸铝粉、硅藻土、膨润土、高岭土、滑石粉、彩砂、透明粉、白炭黑、金刚砂、石墨、海泡石、木粉、轻钙、重钙、玻璃粉、贝壳粉、凹凸棒土、玻璃鳞片、陶土、铝矾土、火山岩、电气石粉、合成云母、赤铁粉
- 主营：重钙粉、白云石、石英砂、高岭土、偏高岭土粉、金刚砂、陶土粉、重晶石粉、石英粉、膨润土、橡胶粉、铝矾土、麦饭石粉、蛭石、滑石粉、轻质碳酸钙、凹凸棒土、长石粉、粘土球、白云石粉、硅微粉、珍珠岩粉、氧化钙、氢氧化钙
- 主营：鹅卵石、水洗石、白石子、高岭土、玻璃砂、火山石、蛭石、雨花石、灰色石子、黑色砾石、黑色石子、圆粒砂、海沙、白沙子、粉煤灰、膨润土、沸石粉、贝壳粉、白云石粉、硅酸铝粉、硅酸铝纤维、硅灰、碳酸钙、金刚砂
- 主营：PE包装薄膜、PVC薄膜、透明PVC膜、软质薄膜、PE收缩膜、彩色PVC薄膜、尿袋膜、PVC磨砂薄膜、黑色PVC薄膜
- 主营：彩钢门窗、百叶窗、防火门窗、软质pvc、电磁屏蔽门窗、铝合金门窗、多腔隔热金属门窗、钢质防火电磁屏蔽门、彩钢复合门窗、组合式彩钢门窗
- 主营：硫酸钡、海泡石、硅藻土、高岭土、碳酸钙、滑石粉、氧化钙/氢氧化钙、氧化铁颜料、膨润土、活性钙、珍珠岩、雪花白、纳米钙、磁铁粉、活性轻钙、氧化钙颗粒、氢氧化钙
- 主营：液体橡胶、塑料增韧剂、相容剂、溶剂型TPU、橡胶粉末、英全SBS、聚丁二烯橡胶RB系列、可发性聚苯乙烯EPS、改性TPU
- 主营：异辛醇、乳化剂、乙烯醚、pvc、醚羧酸、脂肪醇、分散剂、染色助剂、聚乙二醇、异构醇醚、泊洛沙姆、椰油酰胺、基羟乙基、烷基糖苷、特辛基酚、聚氧乙烯、嵌段聚醚、单油酸酯、异构十三醇、丙烯磺酸钠、氢化蓖麻油、丙烯酰胺基、醇醚葡糖苷、低泡渗透剂、甲酯乙氧基、癸基葡糖苷
- 主营：pvc加工助剂
- 主营：台塑PVC原料、聚氯乙烯、增塑剂
- 主营：硫酸钡
- 主营：滑石粉、碳酸钙、涂料塑料、电缆塑料、橡胶塑料、无机阻燃剂、涂料油墨橡胶、硫酸钡、氢氧化镁
- 主营：保温壳、外包装、护彩壳、pvc外包、保热棉、美净壳、保温管、保护壳、保温外壳、机房设备、彩色外壳、彩壳保温、保温材料、保温外护壳、管道装饰层、管道保温防护、机房管道外护壳
- 主营：POM美国杜邦、PA66、TPU科思创、原料颗粒、TPU巴斯夫、PC-1100、PBT、pom100p、pom500p、Pom900p、M90-44、F20-03、日本旭化成pom、日本宝理、沙伯基础、德国巴斯夫、PEEK、PVDF、PCTG、PARA、PPA、PPSU、PMMA、PPS8670A64、PA9T、Pa612