초록 ▼

A double-walled container is formed by gas assist injection molding. Thereafter, the container is further processed by 1) inserting a gas between the container layers, 2) injecting a colored liquid between the container layers, 3) evacuating the void space between the container layers, or 4) pressur

A double-walled container is formed by gas assist injection molding. Thereafter, the container is further processed by 1) inserting a gas between the container layers, 2) injecting a colored liquid between the container layers, 3) evacuating the void space between the container layers, or 4) pressurizing the space between the container layers.

대표청구항 ▼

[ What is claimed is:] [1.] A process for preparing a double-walled container having a gas between the walls thereof, comprising:gas assist injection molding a double-layered parison, including an inner layer and an outer layer, forming the layers so that said inner layer is thinner than said outer

[ What is claimed is:] [1.] A process for preparing a double-walled container having a gas between the walls thereof, comprising:gas assist injection molding a double-layered parison, including an inner layer and an outer layer, forming the layers so that said inner layer is thinner than said outer layer;forming said parison into a double-walled container with an inner layer and an outer layer, said inner layer of said container being thinner than said outer layer of said container;injecting a gas between said inner layer and said outer layer of said container; andconfining said gas between said inner layer and said outer layer of the double-walled container.