Fire-retardant barrier structure

• US 4,975,316 A
• Filed: 03/16/1989
• Issued: 12/04/1990
• Est. Priority Date: 03/16/1989
• Status: Expired due to Term

• Current Assignee: Academy of Applied Science
• Original Assignee: John C. Romanowski
• Inventors: Romanowski, John C.
• Primary Examiner(s): Bell, James J.
• Application Number:
  US07/324,098
• Time in Patent Office: 628 Days
• Field of Search: 428/246, 428/247, 428/920, 428/921
• US Class Current: 442/41
• CPC Class Codes: A41D 31/085 using layered materials
• CPC Class Codes: B32B 2307/3065 Flame resistant or retardant, fire resistant or retardant
• CPC Class Codes: B32B 2307/712 Weather resistant
• CPC Class Codes: B32B 2307/7242 Non-permeable
• CPC Class Codes: B32B 2307/7265 Non-permeable
• CPC Class Codes: B32B 2323/04 Polyethylene
• CPC Class Codes: B32B 2323/043 HDPE, i.e. high density polyethylene
• CPC Class Codes: B32B 2323/046 LDPE, i.e. low density polyethylene
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/20 using fillers, pigments, thixotroping agents
• CPC Class Codes: B32B 27/30 comprising vinyl (co)polymers; comprising acrylic (co)polymers
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 5/024 Woven fabric
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: Y10S 428/92 Fire or heat protection feature
• CPC Class Codes: Y10S 428/921 Fire or flameproofing
• CPC Class Codes: Y10T 442/169 Polyolefin film or sheet

Abstract

A fire-retardant laminated plastic material which includes a woven barrier layer of high-density polyethylene sandwiched between outer layers of low-density polyethylene material in which a polymer of antimony trioxide is incorporated in the outer layers. Additional outer layers may be laminated to the structure to serve as a carrier of pigments or to increase abrasion resistance of the structure.

Claims

1. A fire-retardant barrier fabric comprising a first component of polyvinyl/polyvinylidene film which includes outer layers of low-density polyethylene containing fire-retardant material, said first component being laminated to a second component which comprises a layer of scrim woven from high-density polyethylene material sandwiched between two layers of low-density polyethylene material, all said polyethylene material in said second component also containing fire-retardant material.

2. A fire-retardant barrier fabric as defined in claim 1 wherein said outer layers of said film include 10-30% fire-retardant material.

3. A fire-retardant barrier fabric as defined in claim 2 wherein said scrim comprises a substrate woven from tapes of approximately 950 denier and 10×

10 count per inch in warp and fill.

5. A fire-retardant barrier fabric as defined in claim 1 wherein said fire-retardant material in said low-density polyethylene material is composed of 10% to 30% antimony trioxide polymer.

6. A fire-retardant barrier fabric as defined in claim 1 wherein said first component is approximately 2-4 mils in thickness and said second component includes a scrim layer of approximately 3.0 mils in thickness.

7. A fire-retardant barrier fabric as defined in claim 6 and further including a top layer of 0.5 to 2.0 mils thick low-density polyethylene material laminated to the outer layer of said first component to add abrasion resistance and serve as a carrier of pigments.

4. A fire-retardant barrier fabric as defined in claim wherein said scrim includes 0.5 to 10% fire-retardant material.

8. A fire-retardant barrier fabric comprising a first component which includes a modified multi-layer polyvinyl/polyvinylidene film, the outer layers of said film including 10-30% of antimony trioxide polymer, and a second component laminated to said first component and including a scrim woven from tapes of high-density polyethylene material containing 0.5 to 10% antimony trioxide polymer, said scrim being sandwiched between two layers of low-density polyethylene containing 10-30% of antimony trioxide polymer.