Facing for plastic foamed construction insulation board

• US 4,640,864 A
• Filed: 05/04/1984
• Issued: 02/03/1987
• Est. Priority Date: 05/04/1984
• Status: Expired due to Fees

• Current Assignee: Bay Mills Ltd (Compagnie de Saint-Gobain SA)
• Original Assignee: Bay Mills Ltd (Compagnie de Saint-Gobain SA)
• Inventors: Porter, John F.
• Primary Examiner(s): Ives, P. C.
• Application Number:
  US06/607,287
• Time in Patent Office: 1,005 Days
• Field of Search: 428/486, 428/438, 428/514, 428/334, 428/921, 428/309.9, 428/318.4
• US Class Current: 428/334
• CPC Class Codes: B32B 2262/0238 Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: B32B 2262/0276 Polyester fibres
• CPC Class Codes: B32B 2262/101 Glass fibres
• CPC Class Codes: B32B 2305/08 Reinforcements
• CPC Class Codes: B32B 2307/304 Insulating
• CPC Class Codes: B32B 2307/3065 Flame resistant or retardant, fire resistant or retardant
• CPC Class Codes: B32B 29/007 next to a foam layer
• CPC Class Codes: B32B 29/06 specially treated, e.g. surfaced, parchmentised
• CPC Class Codes: B32B 5/18 characterised by features of a layer of foamed material
• CPC Class Codes: Y10S 428/921 Fire or flameproofing
• CPC Class Codes: Y10T 428/24996 With internal element bridging layers, nonplanar interface between layers, or intermediate layer of commingled adjacent foam layers
• CPC Class Codes: Y10T 428/249987 With nonvoid component of specified composition
• CPC Class Codes: Y10T 428/263 Coating layer not in excess of 5 mils thick or equivalent
• CPC Class Codes: Y10T 428/31634 Next to cellulosic
• CPC Class Codes: Y10T 428/31808 Cellulosic is paper
• CPC Class Codes: Y10T 428/31906 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 442/155 Including a paper layer

Abstract

Facings for plastic foamed construction insulation board are made from paper treated with a treatment comprising about 10% to 100% of the weight of the paper including polymer, water repellant, and fire retardant. A reinforcing scrim may be combined with the paper. The treatment is applied to paper, the scrim is combined with the paper, and foam-forming liquids are applied to the paper to form a facing for a plastic foamed construction insulation board.

Claims

1. A plastic foamed construction insulation board facing that is flexible, thin, and light weight and capable of use in manufacturing such board in which the plastic foam is formed on the facing during manufacture of the board consisting essentially of,

(a) paper, said paper having a basis weight of from about 10 pounds to about 20 pounds and having been treated with a treatment comprising materials whose dry weight is about 10% to 100% of the weight of the paper and which treatment coats fibers in said paper with a composition which provides means for reducing the liquid permeability of fibers of said paper, filling interstices in said paper, and imparting to the paper fire retardancy, water repellancy, reduced porosity, and reduced ability to transmit liquids through said paper,

(b) and a reinforcing scrim adhesively bonded to said paper.

12. The facing of claim 1 in which the treatment comprises (i) a water repellant which includes a dispersion of a high molecular weight wax, (ii) a fire retardant which includes a halogenated fire retardant or a halogenated phosphorous complex, and (iii) a polyvinyl chloride polymer;

and the dry weight is about 20 to 35%.

2. A plastic foamed construction insulation board facing that is flexible, thin, and light weight and capable of use in manufacturing such board consisting essentially of,

(a) paper, said paper having a basis weight of from about 10 pounds to about 20 pounds and having been treated with a treatment which comprises a polymer which provides means for reducing liquid permeability of the paper, the dry weight of such treatment being about 10% to 100% of the weight of the paper, and

(b) a reinforcing scrim adhesively bonded to said paper,

such that liquids used in preparing a plastic foamed insulation construction board do not bleed through said paper.

4. The facing of claim 2 in which the polymer is thermoplastic.

5. The facing of claim 4 in which the thermoplastic has a glass transition temperature between 0°

and 75°

C.

6. The facing of claim 2 in which the paper thickness is less than about 5 mils.

8. The facing of claim 2 in which the facing has an air permeability of less than 40 c.f./m./sq.ft.

9. The facing of claim 2 in which the scrim comprises fiberglass and polyvinyl alcohol.

10. The facing of claim 2 in which the scrim is composed primarily of polyester.

13. The facing of claim 2 in which the paper is a tissue paper.

3. A plastic foamed construction insulation board facing that is flexible, thin, and light weight and capable of use in manufacturing such board consisting essentially of, paper, said paper having a basis weight of from about 10 pounds to about 20 pounds and having been treated with a treatment which comprises a polymer, a fire retardant and a water repellant, the dry weight of which treatment is about 10% to 100% of the weight of the paper and which treatment coats fibers in said paper with a composition which provides means for imparting to said paper reduced porosity, reduced ability to transmit liquids through said paper, fire retardancy, and water repellancy.

7. The facing of claim 3 in which the paper is less than about 5 mils thick and the dry weight of the treatment is about 20 to 35%.

11. The facing of claim 3 in which the paper includes up to about 50% of glass or polyester materials.