Radiation barrier fabric

• US 4,980,564 A
• Filed: 12/27/1989
• Issued: 12/25/1990
• Est. Priority Date: 12/27/1989
• Status: Expired due to Fees

• Current Assignee: Southern Manufacturing Incorporated
• Original Assignee: Southern Manufacture Incorporated
• Inventors: Steelmon, George B.
• Primary Examiner(s): Berman, Jack I.
• Assistant Examiner(s): NGUYEN, KIET TUAN
• Application Number:
  US07/457,330
• Time in Patent Office: 363 Days
• Field of Search: 250/505.1, 250/506.1, 250/502.1, 250/515.1, 250/516.1, 250/517.1, 250/518.1, 250/519.1, 174/35 MS, 342/1, 342/4, 428/229, 428/242, 428/251, 428/263
• US Class Current: 250/505.1
• CPC Class Codes: G21F 1/125 comprising metals
• CPC Class Codes: Y10T 442/2607 Radiation absorptive

Abstract

A composite for blocking electromagnetic radiation includes a central layer of wire reinforced glass fabric, an outer exposure coating of materials which absorb the radiation, and an inner layer of metal.

Claims

1. A radiation barrier material comprising a central layer comprising a composite fabric of heat resistant fibers and metal wire, an outer layer bonded to said fabric comprising solids which are substantially absorptive to said radiation, and an inner layer bonded to said central layer comprising a continuous metallic sheet, said wire and metallic sheet providing conductive paths for radiation absorbed by said material.

2. The radiation barrier material of claim 1 comprising a pair of said barrier fabrics bonded together with the inner layers of said fabric facing each other.

3. The radiation barrier material of claim 1 wherein the heat resistant fibers of said composite fabric are wrapped around said metal wire in the form of a wire inserted yarn.

4. The radiation barrier material of claim 1 wherein said solids are disposed in said outer layer in a polymeric matrix.

5. The radiation barrier material of claim 1 wherein said metallic sheet is aluminum.

6. The radiation barrier material of claim 1 wherein said solids comprise metal oxides, carbonates and sulfates.

7. The radiation barrier material of claim 1 wherein said solids comprise metal flakes.

8. The radiation barrier material of claim 1 wherein said heat resistant fibers comprise glass fibers.