Patent ID: 6266879
Filing Date: 2001-07-31
Classification: A47J,B29C,B29K,F25D,Y10T

Abstract:
A method for manufacturing a container for selectably changing the temperature of its contents by mixing two reactants, comprising the steps of:forming a cylindrical container body and a thermic module body made of plastic as a single unitarily molded part having a central longitudinal axis, said container body having a container body flange at one end and a material chamber for containing said contents, and said thermic module body having a thermic module flange at one end and an elongated generally cylindrical portion extending from said flange, said container and thermic module bodies being joined together at said flanges;cutting the molded part in a direction transverse to the longitudinal axis at the location of said flanges in order to separate the container body from the thermic module body at said flanges;orienting said thermic module body and said container body with said elongated generally cylindrical portion of said thermic module body extending into said material chamber and said thermic module flange abutting and in contact with said container body flange; andspin-welding said thermic module body to said container body by rotating a first one of said thermic module and said container bodies relative to a second one of said thermic module and container bodies and in contact with the second one of said bodies until said thermic module flange fuses with or welds to said container body flange.