Faced foam insulation board and froth-foaming method for making same

a foam insulation board and foam technology, applied in the field of methods, can solve the problems of material loss and contamination of equipment, impair commercial production, etc., and achieve the effect of simple and economical manner, without significant loss of foamable chemicals

a foam insulation board and foam technology, applied in the field of methods, can solve the problems of material loss and contamination of equipment, impair commercial production, etc., and achieve the effect of simple and economical manner, without significant loss of foamable chemicals

USRE36674E1Inactive Publication Date: 2000-04-25THE DOW CHEM CO
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  • Faced foam insulation board and froth-foaming method for making same
  • Faced foam insulation board and froth-foaming method for making same
  • Faced foam insulation board and froth-foaming method for making same

Examples

Experimental program
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Effect test

example i

This example illustrates the process of the present invention for producing an insulation board in a free-rise mode by reference to FIGS. 1, 2, 3 and 4 of the drawings.

A. ISOCYANURATE FORMULATION USED IN PREPARING FOAM CORE OF INSULATION BOARD

The following isocyanurate formulation was used in preparing the foam core of the insulation board.

______________________________________ Item Ingredient Parts by Weight ______________________________________ A Polymethylene polyphenyl 230 isocyanate.sup.1 B Aromatic polyester polyol.sup.2 70 C Trichloromonofluoromethane 50 D Dichlorodifluoromethane 4.4 E Polydimethylsiloxane polyoxy- 3.5 alkylene copolymers.sup.3 F 2,4,6-tris(dimethylaminomethyl) (See below) phenol.sup.4 G Potassium-2-ethylhexoate.sup.4 " H Diethylene glycol.sup.4 " ______________________________________ .sup.1 Item A is a polymethylene polyphenyl isocyanate having an equivalent weight of 140, an acidity of 0.03% HCl, and a viscosity of 200 centipoises at 25.degree. C. and is ...

example 2

This example illustrates the process of the present invention for producing two insulation boards in a restrained-rise mode by reference to FIGS. 1 and 5 of the drawings.

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Abstract

A method for continuously producing an insulation board comprising a rigid plastic foam core having two major surfaces and a facing material on one or both of the major surfaces, the method including conveying a facing material along a production line, depositing a partially expanded froth foam of a plastic mixture, which contains at least one frothing agent, on the facing material, and further expanding and curing the froth foam in contact wiht the facing material to form the insulation board. The board is particularly useful as roof insulation.

Description

FIELD OF THE INVENTIONThis invention relates to a method for continuously producing a rigid plastic foam insulation board with a facing member on at least one major surface thereof, and more particularly to a froth-foaming method for continuously producing an organic foam core faced on one or both sides with organic or inorganic fibers, preferably glass fibers. It also relates to the product formed by such a method.DESCRIPTION OF THE PRIOR ARTRigid foam products have been reinforced in various ways to give them added strength or other desirable physical properties which the foam itself is incapable of providing. These foam products have become increasingly useful in the building industry since they possess many properties which make them extremely valuable in this field. They have high structural strength coupled with relatively low density. Furthermore, the rigid foam products are excellent thermal insulators because of their fine closed cell structure. Many different techniques ha...

Claims

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Application Information

Patent Timeline
25 Apr 2000
Publication
USRE36674E1
IPC
B29C44/00; B29C44/12; B29C44/32; B29C44/02; B29C39/20; B29C44/28; B29C44/30; B32B37/00; B29K75/00; B29K105/04; B29K105/06; B29L7/00; B29L9/00; B32B5/20; C08J9/00; G03G15/01
CPC
B29C44/1209; B29C44/32; B29C67/2255; Y10T428/269; B29L2031/10; Y10S264/05; B29K2075/00; B29C44/321
Inventors
GLUCK, DAVID G.; DELEON, ALBERTO