Sandwich composite material using an air-laid process and wet glass
First Claim
1. A method of forming a sandwich composite material comprising the steps of:
- positioning a core layer between major surfaces of a first skin layer and a second skin layer, said first and second skin layers each being formed of a composite material comprising dehydrated reinforcing fibers and organic fibers, and affixing said core layer to each of said first skin layer and said second skin layer to form a sandwich composite material.
1 Assignment
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Accused Products
Abstract
A sandwich composite material formed of a core layer positioned between first and second skin layers is provided. Either the core layer or the first and second skin layers are formed of a composite material that includes reinforcement fibers and organic fibers. Preferably, the reinforcing fibers are wet use chopped strand glass fibers. The composite material may be formed by opening the reinforcement fibers, blending the reinforcement and organic fibers, forming the reinforcement and organic fibers into a sheet, and bonding the sheet. The core layer and first and second skin layers may be attached by adhesives or resin tie layers. The sandwich composite material may include a facing layer affixed to an exposed major surface of one or both of the first and second skin layers. The strength, stiffness, and load deflection of the sandwich composite material may be modified by changing the amount and/or type of fibers present.
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Citations
18 Claims
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1. A method of forming a sandwich composite material comprising the steps of:
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positioning a core layer between major surfaces of a first skin layer and a second skin layer, said first and second skin layers each being formed of a composite material comprising dehydrated reinforcing fibers and organic fibers, and affixing said core layer to each of said first skin layer and said second skin layer to form a sandwich composite material. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of forming a sandwich composite material comprising the steps of:
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positioning a core layer between major surfaces of a first skin layer and a second skin layer, said core layer being formed of a composite material including dehydrated reinforcement fibers and organic fibers, and affixing said core layer to each of said first skin layer and said second skin layer to form a sandwich composite material. - View Dependent Claims (9, 10, 11, 12)
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13. A sandwich composite material comprising:
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a first skin layer having a first major surface and a second major surface;
a second skin layer having a first major surface and a second major surface; and
a core layer positioned between said first and second skin layers such that said first major surfaces of said first and second skin layers are located adjacent to said core layer;
wherein each of said first and second skin layers or said core layer is a composite material that includes dehydrated reinforcement fibers and organic fibers. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification