My dad was in the plastics business in the 1970’s, but before that he was a tinkerer and made things in the oven using a mold and a vacuum cleaner, I think they referred to it as vacuum forming. It seemed kinda dangerous to me when I was a kid, but I wish I could have worked with him to create his wonderful inventions…..
Collapsible lightweight shipping container on the google patent site.
Joseph Liggett
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