Ballistic laminate structure
AssigneeComposix Co.
InventorLawrence J. Dickson
Life of this patent
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Abstract
A ballistic structure having at least one laminate sheet of a plurality of fiber bundles or tapes is disclosed. In embodiments having more than one laminate sheet, the inter-laminate shear strength between the laminate sheets is controlled to control ballistic effectiveness of the ballistic structure.
Claims42
A laminate sheet for use in a ballistic structure, comprising:
- a first layer of fiber bundles having an adhesive layer or a release layer;
- at least a second layer of fiber bundles and laminated to the first layer and oriented at an angle between 0 and 180 degrees relative to the first layer to form a laminate sheet;
- and
- at least one additional adhesive layer or release layer, wherein:
- at least one of the first layer or second layer has an adhesive layer or release layer penetrating the fiber bundles;
- the laminate sheet has at least one adhesive layer or release layer adjacent to another adhesive layer or release layer;
- and
- at least one of the adjacent adhesive or release layers are chosen to control the inter-laminar shear properties between at least one of the adjacent layers in the laminate sheet.
A laminate sheet for use in a ballistic structure, comprising:
- a first layer of tapes having an adhesive layer or a release layer;
- at least a second layer of tapes laminated to the first layer and oriented at an angle between 0 and 180 degrees relative to the first layer to form a laminate sheet;
- and
- at least an additional adhesive layer or release layer, wherein the laminate sheet has at least one adhesive layer or release layer adjacent to another adhesive layer or release layer, and wherein at least one of the adjacent adhesive or release layers are chosen to control the inter-laminar shear properties between at least one of the adjacent layers in the laminate sheet.
A laminate sheet comprising at least one layer of unidirectionally-oriented fiber bundles bound together with an adhesive having a tensile modulus at 23° C. between about 7,000 psi and about 80,000 psi, wherein the adhesive penetrates the fiber bundles to form a matrix around at least one individual fiber in the fiber bundle and the adhesive comprises no more than about 30% by weight of the total laminate.
A method of making a laminate sheet comprising at least one layer of unidirectionally-oriented fiber bundles, comprising:
- positioning a layer of fiber bundles or tapes;
- applying an adhesive or a release layer to a surface of the layer of fiber bundles or tapes;
- and
- applying pressure to the fiber bundles or tape and the adhesive or release layer to laminate the fiber bundles or tapes such that a laminate sheet is formed.
Dependencies are inferred from the claim text.