EP0412346A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method for producing resin rich surface layer on composite thermoplastic material
Assignee: General Electric Co
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Filing: 1990-07-23
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Granted: —
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Expires: 2010-07-23
Abstract
Abstract A layer of a neat resin in powder form is deposited either on a mold surface or on a bulk thermoplastic composite fiber reinforced sheet. The resin layer is adjacent to an insulated wall of a compression mold. The bulk sheet is preheated and compression deformed with the powdered resin. The heat from the sheet flows to and melts the powder layer producing a resin rich layer. The insulated wall permits the heat of the sheet to be retained sufficiently to melt the powdered resin. In the alternative, the neat resin powder may be replaced with a preformed film of thermoplastic resin compatible with the sheet resin. A structural homogeneous integral molecular bond is formed between the neat resin layer and the sheet.
Inventors
- 👤 Bang Mo Kim
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 16:38
CPC Classifications
B; B32; B32B; B32B38/00; B32B38/08; B29; B29C; B29C33/00; B29C33/02; B29C43/00; B29C43/02; B29C43/18; B29C43/20; B29C43/203; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/086; B29C70/68; B29C70/78; B32B37/00; B32B37/04; B32B37/06; B32B37/14; B32B37/24; B29K; B29K2105/00; B29K2105/25; B29K2105/251; B29K2105/253; B29K2105/256
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
101 words
A method of making a fiber reinforced composite component having a resin rich layer at a component surface comprising: forming a fiber free layer of a first thermoplastic resin; juxtaposing with the layer at least a portion of a thermoplastic blank comprising a second thermoplastic resin and a fibrous reinforcing material, said second resin comprising material that is compatible with the first resin such that the first and second resins form a structural bond therebetween when softened and compressed together; heating and softening at least the blank; and compressing the hot softened blank and layer together to form said structural bond.
Claim 2
Independent Claim
101 words
A method of making a fiber reinforced composite component having a resin rich layer at a component surface comprising: forming a fiber free layer of a first thermoplastic resin; juxtaposing with the layer at least a portion of a thermoplastic blank comprising a second thermoplastic resin and a fibrous reinforcing material, said second resin comprising material that is compatible with the first resin such that the first and second resins form a structural bond therebetween when softened and compressed together; heating and softening at least the blank; and compressing the hot softened blank and layer together to form said structural bond.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein said forming said first thermoplastic resin layer includes depositing said first resin on said at least a portion of said blank.
Claim 4
Dependent Claim
48 words
The method of claim 1 wherein said forming said first thermoplastic resin layer includes depositing said first resin over a first insulated portion of a mold and the juxtaposing step includes placing said at least a portion of said blank adjacent to a second portion of said mold.
Claim 5
Dependent Claim
25 words
The method of claim 1 wherein said heating and softening step includes first heating the blank and then placing the heated blank in a mold.
Claim 6
Dependent Claim
24 words
The method of claim 1 wherein said heating and softening step includes first placing the blank in a mold and then heating the blank.
Claim 7
Dependent Claim
15 words
The method of claim 1 wherein said heating includes dielectric eating at least the blank.
Claim 8
Dependent Claim
29 words
The method of claim 1 wherein the heating and softening step includes heating the blank and then causing the heat from the blank to heat and soften the layer.
Claim 9
Dependent Claim
25 words
The method of claim 1 wherein said forming the first resin layer includes electrostatically depositing the first resin layer in powder form on a substrate.
Claim 10
Dependent Claim
31 words
The method of claim 1 wherein said forming the first resin layer includes forming a sheet from said first resin and the juxtaposing step includes placing the sheet over the blank.
Claim 11
Dependent Claim
15 words
The method of claim 1 wherein said first and second resins comprise the same resin.
Claim 12
Dependent Claim
13 words
The method of claim 1 wherein said first and second resins are disimilar.
Claim 13
Independent Claim
105 words
A method of making a fiber reinforced component having a resin rich layer at a component surface comprising: forming a fiber free first thermoplastic resin layer; heating and softening a composite bulk layer comprising a second thermoplastic resin and reinforcing fibers, said first and second resins comprising compatible resins; compressing the first resin layer and bulk layer together at an interface therebetween; causing the heat from the composite bulk layer to soften the fiber free resin layer at at least said interface; and cooling said fiber free resin layer and bulk layer to form an intecral substantially homogeneous structure with said first and second layers.
Claim 14
Independent Claim
105 words
A method of making a fiber reinforced component having a resin rich layer at a component surface comprising: forming a fiber free first thermoplastic resin layer; heating and softening a composite bulk layer comprising a second thermoplastic resin and reinforcing fibers, said first and second resins comprising compatible resins; compressing the first resin layer and bulk layer together at an interface therebetween; causing the heat from the composite bulk layer to soften the fiber free resin layer at at least said interface; and cooling said fiber free resin layer and bulk layer to form an intecral substantially homogeneous structure with said first and second layers.
Claim 15
Dependent Claim
22 words
The method of claim 12 wherein said causing step includes substantially thermally insulating said resin layer from the mold during said compressing.
Claim 16
Independent Claim
119 words
A method of making a fiber reinforced composite component having a resin rich layer at a component surface comprising: placing a fiber free layer of a first thermoplastic resin in a mold; placing in said mold juxtaposed with the layer at least a portion of a heat softened thermoplastic composite blank comprising a second thermoplastic resin and a fibrous reinforcing material, said second resin being compatible with the first resin which resins when soft form a structural bond when compressed together; and compressing the layer and blank against one another to cause heat to flow to the layer from the blank until the layer is softened at at least the interface between the fiber free layer and the blank.
Claim 17
Independent Claim
119 words
A method of making a fiber reinforced composite component having a resin rich layer at a component surface comprising: placing a fiber free layer of a first thermoplastic resin in a mold; placing in said mold juxtaposed with the layer at least a portion of a heat softened thermoplastic composite blank comprising a second thermoplastic resin and a fibrous reinforcing material, said second resin being compatible with the first resin which resins when soft form a structural bond when compressed together; and compressing the layer and blank against one another to cause heat to flow to the layer from the blank until the layer is softened at at least the interface between the fiber free layer and the blank.
Claim 18
Dependent Claim
42 words
The method of claim 14 wherein said placing said first resin layer in a mold includes forming a sheet of said first resin layer, placing the sheet in said mold, and placing said blank ir said mold prior to said compressing step.
Claim 19
Dependent Claim
22 words
The method claim 14 wherein said placing said first resin layer in a mold includes depositing the layer on a mold surface.
Claim 20
Dependent Claim
25 words
The method of claim 14 wherein said placing said first resin layer in a mold includes depositing the layer on a surface of said blank.
References Cited (Backward Citations)
No citation records indexed.
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