Sandwich material provided with a local reinforcement

Details Sandwich material provided with a local reinforcement Sandwich material provided with a local reinforcement

1990-02-07

1993-02-16

Epstein, Henry F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

428 1, 428139, 4283084, 4283197, B32B 312

Patent

active

051869993

ABSTRACT:
The invention is directed to a sheet-like sandwich material provided with a local reinforcement, comprising a core material sandwiched between two reinforced top layers, which core material is a thermoplastic, foamed core material or a core material having a honeycomb structure, and which top layers consist of a thermoplastic synthetic plastics material reinforced with fibres, preferably in the form of a woven fabric, a knitted fabric, a fibrous web, or unidirectionally applied fibres, and at least one local reinforcement consisting of an amount of plastic material injected under pressure into the core material through one of the top layers, and which plastic material has hardened after injection and to a process for providing a local reinforcement in a sheet-like sandwich material.

REFERENCES:
patent: 3301732 (1967-01-01), Kunz
patent: 3492381 (1970-01-01), Rhyne
patent: 3615975 (1971-10-01), Gillern et al.
patent: 3792141 (1974-02-01), Offutt
patent: 3886023 (1975-05-01), Deplante
patent: 3902732 (1975-09-01), Fosha, Jr. et al.
patent: 4039363 (1977-08-01), Robertson
patent: 4376003 (1983-03-01), Elbez et al.
patent: 4549915 (1985-10-01), Ritschel et al.
patent: 5032443 (1991-07-01), Rietdijk et al.
patent: 5135799 (1992-08-01), Gross et al.

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