Plastic article or earthenware shaping or treating: apparatus – Preform assembly means and means for bonding of plural... – Vulcanizing or curing means including a conforming preform...
Patent
1978-05-30
1979-11-20
Spicer, Jr., Robert L.
Plastic article or earthenware shaping or treating: apparatus
Preform assembly means and means for bonding of plural...
Vulcanizing or curing means including a conforming preform...
425504, 156543, 425388, B29C 2712
Patent
active
041749456
ABSTRACT:
A solar panel comprising first and second generally parallel, spaced sheets of plastic material and a corrugated sheet of plastic material sandwiched between and bonded to the first and second sheets, the spacing between adjacent corrugations in the corrugated sheet being considerably less than 50% of the distance between the first and second sheets and no greater than about 1/2 inch, the plastic material being light transmitting and characterized by resistance to ultraviolet deterioration.
REFERENCES:
patent: 3775932 (1973-12-01), Jeney
patent: 3837973 (1974-09-01), Asakura et al.
patent: 3932248 (1976-01-01), Keaton
patent: 3999928 (1976-12-01), Asakura et al.
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