Is food grade polyethylene higher than medical grade polyethylene?
Polyvinyl chloride (PVC) resin is not toxic, vinyl chloride monomer is toxic, PVC is toxic, a look in the polymerization process of residual monomer is reduced to a certain requirement, the two is to look at the join in the process of AIDS is toxic. Such as PVC food wrap in vinyl chloride monomer if the content is too high, especially in the high temperature environment such as microwave ovens, easy to decompose carcinogenic to human body; in addition, processing PVC film with plasticizer, stabilizer, etc. if the choice is not good, it is easy to cause certain harm to human body.
It has good chemical stability, acid, alkali and some chemicals. It is resistant to moisture, aging and nonflammable. It can not be used more than 60 degrees centigrade and hardens at low temperature. PVC is divided into soft plastic and hard plastic. The soft material is mainly made of film, used as packing materials, rainproof articles, agricultural seedling raising films, etc., and can also be used as insulating layer for cables and wires and artificial leather products. Made of pipes and sheets, pipes are used as pipes and pipes for conveying corrosive fluids, and sheets are used as lining and flooring for various tanks.
Polyethylene English abbreviation PE, it is a polymer of ethylene, non-toxic. Easy to dye, chemical stability, cold resistance, radiation resistance, good electrical insulation. It is suitable for food and drug packaging materials, making utensils, medical equipment, can also be used as insulating materials such as electronic industry. Polyvinyl chloride, English abbreviation for PVC, is a polymer of vinyl chloride.
Polyvinyl chloride contains chlorine. When it is burned, polyethylene does not emit poisonous gas, and polyvinyl chloride will give off poisonous gas
