What are the ingredients in a plastic foam box?
Calcium stearate: saturated fatty acid salts, the amount of about 1%, functions as a lubricant, medical grade.Butane: saturated hydrocarbon, foaming agent. There have been some production lines using freon as foaming agent, in order to protect the ozone layer, the United Nations "Multilateral Fund" aid has all use butane foaming agent.
PS: its process is monomer styrene under high temperature, high pressure and catalyst action, in the sealed reactor polymerization. Although styrene is an aromatic compound, its reaction is carried out under sealed anaerobic conditions without producing dioxin conditions and is in line with food hygiene and requirements. Talc: it is an inorganic mineral (containing magnesium silicate hydrate), dosage of about 1%, played a nucleating role, medical grade.
The main raw material of foam polystyrene, talcum powder, calcium stearate, butane etc..
