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Fire extinguishing core

A technology of adhesive film and functional layer, which can be used in film/sheet adhesive, transportation and packaging, adhesives, etc.

Inactive Publication Date: 2013-08-28
BOSTIK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the use of flame retardants in adhesives can reduce adhesive performance
In general, as the flame retardant pigments are added to the adhesive, there will be a slight corresponding decrease in adhesion performance

Method used

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example

[0026] In an exemplary embodiment of the present invention, the fire extinguishing adhesive film 10 includes functional adhesive layers 12 and 14 made from pressure sensitive adhesives, and in particular the above mentioned ones having a dry film thickness of about 19 microns. Bostik LADH7583. In this embodiment the adhesive layers 12, 14 do not contain flame retardants. A fire suppression film core 16 having a dry film thickness of about 12.7 microns is placed between the adhesive film layers 12,14. In this exemplary embodiment, the following ingredients are mixed by shear mixing to form a homogeneous solution for the fire suppression core 16:

[0027] Table 1

[0028]

scope

2-Butoxyethanol

8.10%

4-20

MEK

3.67%

2-10

toluene

6.62%

2-10

Polyurethane solution 35.54%

MEK

4.32%

3-6

toluene

24.24%

20-30

Polyurethane

6.98%

6-20

Ethylene bis tetr...

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Abstract

A fire extinguishing adhesive film includes outer layers of adhesive and an inner fire extinguishing core comprising a layer of resin containing a high concentration of fire retardant. Low levels of fire retardant may be blended into the adhesive layers, although it is preferred that the adhesive be pure. Polyurethane resin allows for a fire retardant loading of 86% by weight in the fire extinguishing core, and therefore provides significantly higher yields of fire retardant per unit area of the film without compromising adhesive performance.

Description

technical field [0001] The present invention relates to fire extinguishing films, and more particularly to films having fire extinguishing cores containing high concentrations of flame retardant pigments. The present invention enables the fire extinguishing adhesive film to exhibit excellent adhesive performance and flame retardancy. Background technique [0002] Adhesive films having flame retardancy are known in the prior art. Commercial products are often sold in rolls and are designed to adhere to another product, such as decorative wall coverings that impart decorative coatings to walls and fire resistance to walls. The roll contained an adhesive layer containing a flame retardant dispersed uniformly throughout the layer and coated onto a release liner. For its end use, the adhesive layer is transferred to another product such as a decorative wall by bringing the adhesive film into contact with the final product and by adhering the adhesive film to the final product a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09K21/10C09J7/22
CPCC09J2433/00C09J2475/006C09J7/22Y10T428/2839
Inventor J·T·波义尔K·派奎因K·皮尔
Owner BOSTIK INC