Method of recycling a discarded polyurethane foam article
OwnerChing-Bing Changinventor
Life of this patent
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Abstract
A method of recycling discarded PU foam articles comprises a first step of grinding the discarded PU foam articles into fine particles, which are then mixed with a predetermined amount of a powdered plastic to form a mixture. The mixture is heated to become a molten mixture, which is cooled to take form. The molten mixture may be adhered to the surface of a cloth or leather material when the cooling and the forming processes of the molten mixture are under way. The final product can be burned at a high temperature to produce a high-carbon residue, which is added to the mixture to make a product having a deodorant and an antistatic effects.
Claims9
A method of recycling a discarded polyurethane foam article comprising the steps of:
- (a) grinding a predetermined amount of discarded polyurethane (PU) foam articles into fine particles having a diameter smaller than 3 mm;
- (b) making a mixture containing said fine particles and a predetermeined amount of a meltable plastic powder containing polyamide or polyester;
- (c) heating said mixture at a temperature capable of causing said mixture to become molten mixture;
- and
- (d) transferring said molten mixture through a gauge, a thickness adjusting means, a cooling device, and a conveyer, so as to form a final product.
Dependencies are inferred from the claim text.