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Fire stop device with rupturable element

A technology for parts and joints, used in fire protection, building components, fire rescue, etc.

Inactive Publication Date: 2006-06-07
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But above-mentioned these devices or technology all have certain shortcoming or deficiency

Method used

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  • Fire stop device with rupturable element
  • Fire stop device with rupturable element
  • Fire stop device with rupturable element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] The structure of a fire blocking device 302 is as follows: Figure 5 As shown, two pieces of 1 / 4 inch INTERRAM G-MAT expansion cloth 304a, 304b purchased from 3M Company were obtained. The covers 306a', 306a", 306b', 306b", form a top outer layer 308a and a bottom outer layer 308b. Both the top outer layer 308a and the bottom outer layer 308b use the expansion cloth 304a, 304b as the core layer, and are respectively sandwiched between the flame-retardant polyester cover cloths 306a', 306a" and 306b', 306b". NEXTEL FLAME STOPPING DOT PAPER infrared blocking layer 310 available from 3M Company was placed on the inner surface 312 of the bottom outer layer 308b. It has been found that a layer 310 of fire resistant paper can significantly improve the fire stopping performance of the overall fire stop. Looking at the bottom from the top, the expansion cloth 304a, 304b, the mesh cloth 306a', 306a" and 306b', 306b" and the fireproof paper 310 together form a roughly rectangul...

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PUM

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Abstract

A fire-stopping device comprising an enclosure (4) with a thermally destructible component (6) and an intumescent filling material (10) placed inside the enclosure. The cladding is made of flame retardant material that retains the intumescent fill material after the rupturable part breaks. In addition, the thermally destructible member breaks when subjected to a force smaller than the expansion force of the expandable filler material. Thus, expansion occurs in a controlled manner through the rupturable member by expanding when the intumescent filler material reaches its activation temperature, generating a force greater than the strength of the destructible member, thereby causing the rupturable member to fracture.

Description

[0001] technical field of invention [0002] The present invention relates generally to fire arresting devices and more particularly to a flexible envelope comprising an intumescent material which acts to form a flame retardant barrier in the event of a fire. background of the invention [0003] The mechanism by which flames can spread from one room to another in a building is through passages or openings in floors or walls, often called through-holes. Such openings include, for example, cable access holes through which communication and power cables pass. [0004] At present, the common method to prevent the flame from spreading through this channel and the smoke from spreading through this channel is: cut two pieces of expansion material to wrap the periphery of the cable in the channel, and apply a string of moldable expansion materials along the periphery of each piece. sex seal. While this technique generally meets the need to stop flame or smoke from spreading and spre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62C2/06E04B1/94F16L5/04
CPCA62C2/065E04B1/948Y10S428/92Y10S428/921Y10T428/23Y10T428/239
Inventor M·G·德赫弗
Owner 3M INNOVATIVE PROPERTIES CO