Patent ID: 6214272
Filing Date: 2001-04-10
Classification: B29C,B29K

Abstract:
A method for rotationally molding an article in a mold having inner surface corresponding to the shape of the article comprising:adding a first resin material and a second resin material to the mold, wherein the first resin material has a first average particle size and the second resin material has a second average particle size, wherein the second average particle size is greater than the first particle size;separating the first resin material and the second resin material within the mold;heating the mold to a predetermined temperature;rotating the mold;melting the first resin material;depositing the first resin material on the inner surface of the mold, wherein the rotation of the mold evenly distributes the melted first resin material on the inner surface of the mold to form a first layer;melting the second resin material;depositing the second resin material on the first resin material within the mold, wherein the rotation of the mold evenly distributes the melted second resin material on the first resin material within the mold to form a second layer on the first layer;cooling the mold; andremoving the article from the mold.