Foamable thermoplastic stick and foamed element made therefrom

Details Foamable thermoplastic stick and foamed element made therefrom Foamable thermoplastic stick and foamed element made therefrom

1978-03-13

1980-07-29

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

521 50, 206523, 206584, 206814, 428167, 428179, 428369, 428397, 428402, B32B 300, B32B 330

Patent

active

042151660

ABSTRACT:
Sticks of foamable thermoplastic material are provided with grooves in at least one surface. These grooves extend width-wise of the stick. In addition, the grooves are disposed in equi-spaced relation along one surface of the stick, or in spaced-apart series or groups on only one surface, or in series or groups on opposite surfaces and in spaced-apart relation. Upon foaming, the sticks form formed elements of various shapes, each of which has at least one curvilinear portion such as, for example, a corkscrew shape, an annular shape or shapes with reverse bends.

REFERENCES:
patent: 3135646 (1964-06-01), Hayden
patent: 3188264 (1965-06-01), Holden
patent: 3425893 (1969-02-01), Sims
patent: 3481455 (1969-12-01), Graham et al.
patent: 3723237 (1973-03-01), Fuss
patent: 3723240 (1973-03-01), Skochdopole et al.
patent: 3896934 (1975-07-01), Graham et al.
patent: 4027064 (1977-05-01), Bussey

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