Why do different batches of pvc coating film have color difference

1. Because of external factors such as room temperature, humidity, etc., plus internal factors such as operation, raw materials, etc., they are all changing. So it's hard to be consistent. 2. PVC is polyvinyl chloride, English abbreviation PVC (Polyvinylchloride), is vinyl chloride monomer (vinylchloridemonomer, referred to as VCM) in peroxides, azo compounds and other initiators; or under the action of light and heat according to free radical polymerization reaction Polymers formed by mechanism polymerization. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. Its material is an amorphous material. In practical use, PVC materials often add stabilizers, lubricants, auxiliary processing agents, pigments, impact resistance agents and other additives. It has non-flammability, high strength, weather resistance and excellent geometric stability. PVC is very resistant to oxidizing agents, reducing agents and strong acids. However, it can be corroded by concentrated oxidizing acids such as concentrated sulfuric acid and concentrated nitric acid and is not suitable for contact with aromatic hydrocarbons and chlorinated hydrocarbons. If you want to reduce the color difference, first of all, the purchase of raw materials must be fixed. Paste resins, plasticizers, stabilizers, and other auxiliaries should be selected from fixed suppliers, and the quality of each batch of suppliers should be stable. Furthermore, the control of the stretch film blow molding machine or calendering machine must be regular and form a routine, and it can be slightly adjusted according to seasonal changes. Finally, if you want to strictly control the quality, you must never use unidentified return materials. Founded in 2003, Zhongshan ZHONGSHAN LINYANG PLASTIC CO.LTD Decoration Materials Co., Ltd. is a modern enterprise specializing in the production, sales and service of PVC blister film for cabinets. The company covers an area of u200bu200b20,000 square meters and has an existing asset of 200 million yuan. It is the largest PVC sales company in the Central Plains region. At the same time, small batch delivery and 24-hour fastest delivery service are provided.