3660189 is referenced by 86 patents and cites 8 patents.

Cellular cushioning material is prepared by sealing an elastic substance within cells that are formed between two flexible films. When the elastic material is a gas, means may be provided to charge the cells at superatmospheric pressure to achieve full inflation of the cells and maximum efficiency of the cushioning material.

Title
Closed cell structure and methods and apparatus for its manufacture
Application Number
04/819,719
Publication Number
3660189
Application Date
April 28, 1969
Publication Date
May 2, 1972
Inventor
Troy Constantine T
IPC
B32b 31/00
B32b 31/02
B29C 49/00
B32B 27/00
B29C 65/48
B29C 69/00
B29C 65/22
B29C 65/18
B29C 51/18
B29C 51/22
View Original Source