Fire endurance rated plastic articles for use in fire rated assemblies

• US 5,687,532 A
• Filed: 05/06/1996
• Issued: 11/18/1997
• Est. Priority Date: 05/06/1996
• Status: Expired due to Fees

• Current Assignee: Sabic Innovative Plastics IP BV (Government of Saudi Arabia)
• Original Assignee: General Electric Company
• Inventors: Torrey, Bruce M.
• Primary Examiner(s): KENT, CHRISTOPHER T
• Application Number:
  US08/642,979
• Time in Patent Office: 561 Days
• Field of Search: 52/232, 52/656.3, 52/656.4, 52/656.5, 52/204.1, 49/504, 49/DIG. 2
• US Class Current: 52/656.3
• CPC Class Codes: B60P 3/36 Auxiliary arrangements; Arrangements of living accommodation toilet or washing arrangements B60R15/00; Details
• CPC Class Codes: B61D 17/00 Construction details of vehicle bodies for tank wagons B61D5/00; for hopper cars B61D7/00; body details specially adapted for tipping wagons B61D9/06; for mine cars B61D11/00
• CPC Class Codes: E06B 3/221 with the frame member having local reinforcements in some parts of its cross-section or with a filled cavity
• CPC Class Codes: E06B 5/16 Fireproof doors or similar closures; Adaptations of fixed constructions therefor
• CPC Class Codes: Y10S 49/02 Plastic frame components

Abstract

A plastic article such as a thermoplastic extruded door frame or laminated composite floor for railroad cars having at least one internal cavity wherein the cavity is filled with an intumescent. When exposed to fire, such an article retards or inhibits the break-through of fire into an adjoining compartment or room for a sufficient time to allow occupants thereof to evacuate the adjoining compartment or to extinguish the fire. The article has at least one internal cavity filled with an intumescent and meets the requirements of ASTM E 152. The plastics employed herein may be either thermoplastic or thermoset.

Claims

1. A thermoplastic extruded door frame having an exterior surface and an interior honeycomb configuration forming a plurality of cavities, said cavities being filled with an intrumescent material.

2. The thermoplasticarticle of claim 1, wherein the thermoplastic is acrylonitrile-butadiene-styrene.

3. The plastic article of claim 1, wherein the thermoset plastic is phenol formaldehyde.

4. A thermoplastic extruded door frame in accordance with claim 1 having a 30 minute fire endurance rating meeting ASTME 152 test wherein a door assembly is exposed to furnace temperatures of 1000°

F. at 5 minutes after start of said test, 1300°

F. at 10 minutes after start of said test, and 1550°

at 30 minutes after start of said test.