Electronic device having a sheathed body and a method of produci

Details Electronic device having a sheathed body and a method of produci Electronic device having a sheathed body and a method of produci

1998-08-25

2000-10-31

Morris, Terrel

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283159, 4283197, 4283084, 428 68, 428 76, 428 72, 361272, 29 2542, 29598, B32B 326, B32B 312

Patent

active

061399442

ABSTRACT:
An electronic device 1 includes an electronic element 3 having an outer sheath 5 covering at least substantially the entire outer surface of the electronic element. The outer sheath 5 has three layers: a first thermoplastic layer 5a formed on at least substantially the entire outer surface of the electronic element; a thermoplastic resin layer 5a formed on at least substantially the entire outer surface of the first thermosetting layer 5a, and a second thermoplastic resin layer 5b formed on at least substantially the entire outer surface of the thermoplastic layer. The outer sheath is formed by placing an uncured thermosetting resin on the outer surface of the electronic element to form the first thermosetting resin layer placing an uncured thermosetting resin on the outer surface of the first thermosetting resin layer to form the thermoplastic layer and placing an uncured thermosetting resin layer on the thermoplastic layer to form the second thermosetting resin layer. All three layers are then heated so as to cure the first and second thermosetting resin layer and to cause the thermoplastic layer to melt and form a non-porous layer which is subsequently solidified.

REFERENCES:
patent: 3851363 (1974-12-01), Booe
patent: 4439810 (1984-03-01), Shimada et al.
patent: 4670816 (1987-06-01), Johnk
patent: 5381301 (1995-01-01), Hudis

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