Injection Molding and Its Impact on Household Product Design (1945–1995)

1. Postwar plastics manufacturing capacity shifts to consumer goods

   Jan 1, 1945Labels: Postwar manufacturing, Injection molding

   • Britannica
   • Science Museum

2. Tupperware brings molded polyethylene food storage to market

   Jan 1, 1946Labels: Tupperware, Polyethylene

   • Lemelson
   • Tupperware

3. Tupperware patents its “burping” seal closure

   Jan 1, 1949Labels: Tupperware, Seal patent

   • Tupperware
   • Lemelson

4. ABS is patented and moves toward commercial production

   Jan 1, 1954Labels: ABS plastic, Commercial production

   • ABS
   • PlasticsToday

5. Saarinen’s Tulip chair popularizes molded plastic forms in homes

   Jan 1, 1956Labels: Eero Saarinen, Tulip chair

   • Met Museum
   • Tulip chair

6. Tupperware parties scale demand for standardized molded products

   Jan 1, 1958Labels: Tupperware, Direct sales

   • Lemelson
   • Tupperware

7. Wham-O’s Hula Hoop shows plastics’ mass-market scalability

   Jun 16, 1958Labels: Wham-O, Hula Hoop

   • Hula Hoop
   • Wham O

8. Food Additives Amendment reshapes plastics used with food

   Sep 6, 1958Labels: Food Additives, Regulation

   • Congress gov
   • FDA Amendment

9. LEGO adopts ABS, showcasing tight-tolerance injection molding

   Jan 1, 1963Labels: LEGO, ABS plastic

   • LEGO Help
   • History LEGO

10. 1970s material shifts address durability and additive concerns

    Jan 1, 1975Labels: 1970s materials, Polymer shift

    • MDPI Polymers
    • Plastics Dev

11. Resin identification codes support sorting and design-for-recycling

    Jan 1, 1988Labels: Resin identification, Society of

    • RIC
    • ANSI Blog

12. Kraft spins off Tupperware, reflecting a mature plastics-housewares market

    Jan 1, 1996Labels: Tupperware, Corporate spin-off

    • BusinessInsider
    • Tupperware