US4516996A — Formation of molded glass fiber parts from glass …

Claim 1

Independent Claim 112 words

A method of forming a molded glass fiber part which comprises: (a) melting glass batch to form molten glass; (b) forming glass fibers from said molten glass, said glass fibers being discharged from a spinner; (c) contacting the discharged fibers with a binder, a phenolic resin and a liquid polyisocyanate as the discharged fibers are descending from said spinner; (d) accumulating the discharged fibers in contact with the binder, a phenolic resin and a liquid polyisocyanate on a conveyor; (e) introducing the discharged fibers from (d) into a mold; and (f) contacting the fibers within the mold with a tertiary amine while molding the fibers to form a molded glass fiber part.

Claim 2

Independent Claim 112 words

A method of forming a molded glass fiber part which comprises: (a) melting glass batch to form molten glass; (b) forming glass fibers from said molten glass, said glass fibers being discharged from a spinner; (c) contacting the discharged fibers with a binder, a phenolic resin and a liquid polyisocyanate as the discharged fibers are descending from said spinner; (d) accumulating the discharged fibers in contact with the binder, a phenolic resin and a liquid polyisocyanate on a conveyor; (e) introducing the discharged fibers from (d) into a mold; and (f) contacting the fibers within the mold with a tertiary amine while molding the fibers to form a molded glass fiber part.

Claim 3

Dependent Claim 79 words

The method of claim 1 in which said phenolic resin comprises an organic solvent solution of a non-aqueous phenolic resin which comprises a condensation of a phenol having the general formula: ##STR4## wherein A, B, and C are hydrogen, hydrocarbon radicals, oxyhydrocarbon radicals or halogen, with an aldehyde having the general formula R'CHO wherein R' is a hydrogen or hydrocarbon radical of 1 to 8 carbon atoms, said hardener component comprising liquid polyisocyanate containing at least two isocyanate groups.

Claim 4

Dependent Claim 26 words

The method of claim 1 in which said glass fibers are intermixed with organic fibers prior to the deposition of said phenolic resin and said polyisocyanate.

Claim 5

Dependent Claim 13 words

The method of claim 1 in which said polyisocyanate is an aromatic polyisocyanate.

Claim 6

Dependent Claim 16 words

The method of claim 1 in which said tertiary amine is trimethyl amine or triethyl amine.

Claim 7

Dependent Claim 12 words

The method of claim 1 in which said polyisocyanate is diphenylmethane diisocyanate.

Claim 8

Dependent Claim 76 words

A process for forming glass fiber parts comprising applying an organic solvent solution of a phenolic resin and a polyisocyanate unto glass fibers as they are emitted from a fiber forming means, accumulating said fibers and binding said accumulated fibers together by contacting said fibers, resin and polyisocynate with a vapor containing a tertiary amine curing agent at substantially room temperature whereby said resin and polyisocyanate rapidly cure at substantially room temperature to effect such binding.

Claim 9

Dependent Claim 76 words

A process for forming glass fiber parts comprising applying an organic solvent solution of a phenolic resin and a polyisocyanate unto glass fibers as they are emitted from a fiber forming means, accumulating said fibers and binding said accumulated fibers together by contacting said fibers, resin and polyisocynate with a vapor containing a tertiary amine curing agent at substantially room temperature whereby said resin and polyisocyanate rapidly cure at substantially room temperature to effect such binding.

Claim 10

Independent Claim 69 words

A method of forming a glass fiber part comprising and applying an organic solvent solution of a phenolic resin and a polyisocyanate to a glass fiber batt, wherein said fibers contain a binder to maintain the batt as a coherent mass, shaping said batt into said part and binding said shaped part by rapidly curing said phenolic and polyisocyanate with a tertiary amine curing agent at substantially room temperature.

Claim 11

Independent Claim 69 words

A method of forming a glass fiber part comprising and applying an organic solvent solution of a phenolic resin and a polyisocyanate to a glass fiber batt, wherein said fibers contain a binder to maintain the batt as a coherent mass, shaping said batt into said part and binding said shaped part by rapidly curing said phenolic and polyisocyanate with a tertiary amine curing agent at substantially room temperature.

Claim 12

Dependent Claim 35 words

A cured glass fiber part comprising glass fibers bound together with a binder formed by reacting a phenolic resin and a polyisocyanate with a gas containing a tertiary amine curing agent at substantially room temperature.

Claim 13

Dependent Claim 35 words

A cured glass fiber part comprising glass fibers bound together with a binder formed by reacting a phenolic resin and a polyisocyanate with a gas containing a tertiary amine curing agent at substantially room temperature.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1988-05-13	1988-11-12	1989-05-14	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1992-05-13	1992-11-12	1993-05-14	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1996-05-13	1996-11-12	1997-05-14	$7700.00	Window Closed / Lapsed

Formation of molded glass fiber parts from glass fiber blankets and product

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