Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By gas forming or expanding
Reexamination Certificate
2006-06-06
2006-06-06
Kuhns, Allan R. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By gas forming or expanding
C264S045100, C264S156000, C264S245000
Reexamination Certificate
active
07056459
ABSTRACT:
A method for manufacturing shoe components using EVA copolymer of film shape having a thickness of 0.01 to 2 mm, preferably 0.1 to 1.0 mm and a surface roughness variations which cannot be easily discriminated through touch or sight, and a shoe component manufactured by the method are provided. The method overcomes the drawbacks caused during the process of manufacturing a shoe component with different mechanical physical properties or colors. The method allows for ease of manufacture of a shoe component with two or more types of colors or physical properties, through a single foam molding process using a film with less variation and ease of processing, to thereby simplify manufacturing procedures and reduce manufacturing costs. In addition, a high quality shoe component with no additional seam-line is obtained.
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