Stock material or miscellaneous articles – Sheet including cover or casing
Patent
1995-07-24
1998-04-14
Ahmad, Nasser
Stock material or miscellaneous articles
Sheet including cover or casing
52785, 52790, 52794, 52795, 52796, 52800, 52806, 52808, 52809, 428 72, 428 73, 428 76, 428116, 428117, 428118, 428119, 428120, 428131, 428188, 4285371, B32B 312
Patent
active
057389241
ABSTRACT:
Sandwich construction building materials are produced using conventional facings of plywood, fiberboard, particle board, mineral board, wood, metal, plastic, etc. on both faces of the building material, the inner core therebetween being made from natural wood veneer, made from wood fibers or wood shavings combined with synthetic resin, bamboo, etc. bent into elongate strips of angular, corrugated or undulating configuration or rolled into hollow tubes. The strips or tubes may be cut transversely into strips of rings of equal height and assembled proximately of contiguously to form an inner core layer having an openwork pattern. Openwork spaces may be filled with insulation or strengthening materials, and core elements may be coated with resins or adhesives. The resulting building products may be modular and lightweight, strong and suitable for use as plywood, flooring, walls, beams, joists, trusses and posts.
REFERENCES:
patent: 2697461 (1954-12-01), Konstandt
patent: 3616119 (1971-10-01), Wukowitz
patent: 4119750 (1978-10-01), Porter
patent: 4251579 (1981-02-01), Lee
Ahmad Nasser
Altman Nathaniel
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