GB1589858A - Upholstery components - Google Patents
Upholstery components Download PDFInfo
- Publication number
- GB1589858A GB1589858A GB375878A GB375878A GB1589858A GB 1589858 A GB1589858 A GB 1589858A GB 375878 A GB375878 A GB 375878A GB 375878 A GB375878 A GB 375878A GB 1589858 A GB1589858 A GB 1589858A
- Authority
- GB
- United Kingdom
- Prior art keywords
- foam
- crib
- core
- flame
- mattress
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000006260 foam Substances 0.000 claims description 40
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 29
- 239000003063 flame retardant Substances 0.000 claims description 29
- 239000000126 substance Substances 0.000 claims description 20
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 10
- 239000011496 polyurethane foam Substances 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 8
- 239000006261 foam material Substances 0.000 claims description 8
- 239000002023 wood Substances 0.000 claims description 8
- 210000002268 wool Anatomy 0.000 claims description 8
- 239000000779 smoke Substances 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 5
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 4
- 229920005862 polyol Polymers 0.000 claims description 4
- 150000003077 polyols Chemical class 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 230000003712 anti-aging effect Effects 0.000 claims description 3
- 239000012753 anti-shrinkage agent Substances 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000003607 modifier Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 230000001143 conditioned effect Effects 0.000 claims description 2
- 229920000126 latex Polymers 0.000 claims description 2
- 239000004816 latex Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229920006173 natural rubber latex Polymers 0.000 claims description 2
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 2
- 239000011122 softwood Substances 0.000 claims description 2
- 229920006174 synthetic rubber latex Polymers 0.000 claims description 2
- HIFVAOIJYDXIJG-UHFFFAOYSA-N benzylbenzene;isocyanic acid Chemical compound N=C=O.N=C=O.C=1C=CC=CC=1CC1=CC=CC=C1 HIFVAOIJYDXIJG-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 230000002009 allergenic effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000005702 oxyalkylene group Chemical class 0.000 description 1
- -1 poly(oxyalkylene) Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 125000005628 tolylene group Chemical group 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Bedding Items (AREA)
Description
(54) UPHOLSTERY COMPONENTS
(71) We, DUNLOP LIMITED, a British
Company of Dunlop House, Ryder Street,
St. James's, London S.W.1., do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to upholstery components and in particular to upholstery components which exhibit flame-retardant properties in a fire situation.
Such flame-retardant upholstery components should ideally conform to the conditions laid down by the Department of the Environment (U.K.) in its Specification No. 4. The said D.O.E. Specification prescribes that, after two minutes from the cessation of burning of an ignition source, all flaming, smoke emission and smouldering shall have ceased and that the overall structure of the component shall remain sufficiently whole to prevent combustion of its filling.
Cellular materials (e.g. foams) are well known as fillers for upholstery components and their relative ease of manufacture, together with their hygenic and non-allergenic properties, makes them ideal for this purpose.
However, increasing public awareness of the dangers associated with foam combustion (especially the rapid spread of flame and the emission of toxic products of combustion) has made it necessary to search for a foam which is both suitable for use as an upholstery filling and which exhibits a satisfactory degree of flame-retardance in a fire situation.
We have found that satisfactory flameretardance in foam-filled upholstery components may be achieved by covering a core of a flame-collapsible (as herein- defined) polyurethane foam with a further layer of foam which has been impregnated with a flame-retardant substance. The covered core may be enclosed in an outer fabric casing (which itself may have been treated with a flame-retardant substance).
Accordingly, the present invention provides a method of making a flame-retardant upholstery component having a core of a flame-collapsible (as herein defined) polyurethane foam, in which the core is covered with a layer of foam material which has been impregnated with a flame-retardant substance.
The present invention also provides a flame-retardant upholstery - component comprising a core of a flame-collapsible (as herein defined) polyurethane foam, the core being covered with a layer of foam material which has been impregnated with a flame retardant substance.
The covered core may be enclosed in a fabric casing, and the casing may itself have been treated with a flame-retardant substance.
By "flame-collapsible foam" is meant a foam which collapses on application - of a flame and thereby presents a reduced surface area to the flame without sustained burning, for example a foam as described in our U.K. Patent No. 1,339,441, comprising the reaction product of a polymeric polyol, a tolylene diisocyanate, a foam modifier, an anti-ageing additive and an anti-shrinkage agent for the foam.
Other suitable foams are the so-called "high-resilience" foams. These may be produced 'by various known methods.- Some methods make use of a reaction between an ethylene oxide-tipped poly(oxyalkylene) triol and one of the following isocyanates:
(a) Modified tólylene di-isocyanate,
(b) Tolylene di-isocyanate plus a crosslinking agent,
(c) Crude (diphenyl) methane diisocyanate
(d) A mixture of crude (diphenyl) methane diisocyanate and tolylene diisocyanate.
Alternatively, a specially-modified poly (oxyalkylene) triol (polymeric polyol) may be reacted with tolylene diisocyanate.
Suitable flame-retardant substances for imparting the layer of foam material covering the core include suspensions of a hydrated alumina in a natural or synthetic rubber latex (as described in our co-pending- Appli- cation No. 46132/75, now U.K. Specification No. 1.519.795).
Foams which are suitable for use as the core and the covering of upholstery components according to the present invention include, for example, those available from
Dunlop Limited, (Dunlopillo Division) as
DP 107 and DllR 264 (core) and as D7 (covering). DP 107 is a flame-collapsible polyurethane foam, DHR 264 is a highresilience polyurethene foam and D7 is a conventional polyurethane foam.
Tests to ensure that the upholstery components according to the present invention satisfy the conditions laid down in the aforesaid D.O.E. Specification are carried out as follows.
(i) "Large crib" test
Ten sticks of softwood, each of dimensions 80 mm x 12-5 mm x 12 5 mm and conditioned to a moisture content of 12%, are stacked 5 laycrs high, two sticks to each layer in alternate directions, and glued at the ends of the sticks by means of a p.v.a.based adhesive. Sufficient wood wool is placed in the cavity defined by the sticks to give a total "crib" weight of 75 g. The wood wool is ignited by means of a match.
(ii) "Double crib" test
Two cribs, each constructed as described in the immediately preceding paragraph and containing, in toto, sufficient wood wool to give an overall "double crib" weight of 150 g, are placed side-by-side. The wood wool is ignited by means of a match.
The present invention will be illustrated by means of the following examples. In the examples, an upholstery component in the form of a miniature mattress was supported on a metal frame. In the "large crib" and "double crib" tests, the crib was placed in the centre of the upper horizontal surface of the mattress.
EXAMPLE 1
A miniature mattress, having a core of
DP 107 foam wrapped with a 1/2" thick layer of D7 foam (previously impregnated with a suspension of hydrated alumina in a neoprene latex) and enclosed in a cotton cover treated with a flame-retardant substance, was subjected to the "large crib" test. All charring and emission of smoke ceased within 3 minutes of the crib extinguishing.
EXAMPLE 2
A miniature mattress, constructed as described in Example 1, was subjected to the "double crib" test. The performance of the sample was similar to that under the condition of the "large crib" test, but the sample continued to emit smoke for about 5 minutes after removal of the crib embers.
EXAMPLE 3
A miniature mattress, having a core of
DHR 264 foam wrapped with a 1/2" thick layer of impregnated D7 foam and enclosed in a cotton cover treated with a flameretardant substance, was subjected to the "large crib" test.
All charring and emission of smoke ceased within 3 minutes of the crib extinguishing.
In the two following "Control" examples, the "large crib" test was carried out on a miniature mattress comprising a core of a foam material which does not exhibit "flame-collapsibility".
CONTROL EXAMPLE A
A miniature mattress, comprising a core of a conventional polyurethane foam (avialable from Dunlop Limited-Dunlopillo Divi- sion as D 15) was enclosed in a cotton cover treated with a flame-retardant substance and subjected to the "large crib" test.
The cover split, allowing the burning crib to collapse into the already-ignited foam core. Complete ignition of the core occurred and the resulting fire had to be extinguished.
CONTROL EXAMPLE B
A miniature mattress, comprising a core of D15 foam wrapped with a 1/2" thick layer of the impregnated foam and enclosed in a cotton cover treated with a flameretardant substance, was subjected to the "large crib" test.
The mattress developed a self-sustaining char which continued to burn for 40 minutes before being extinguished.
Throughout the foregoing description and and Examples, the term "flame-retardant" has the meaning assigned to it in British
Standard Specification No. 4422 (Glossary of terms associated with fire).
Whilst the present invention has been described with particular reference to mattresses, it is to be understood that the concept is equally applicable to cushions, pillows, seat squabs and the like.
WHAT WE CLAIM IS:- 1. A flame-retardant upholstery component comprising a core of a flame-collapsible (as hereinbefore defined) polurethane foam, the core being covered with a layer of foam material which has been impregnated with a flame-retardant substance.
2. A component according to Claim 1, in which the core is made of a foam comprising the reaction product of a polymeric polyol, a tolylene diisocyanate, a foam modifier, an anti-ageing additive and an anti-shrinkage agent for the foam.
3. A component according to claim 1, in which the core is made of a "high-resilience" foam.
4. A component according to Claim 1, 2 or 3, in which the flame-retardant substance comprises a suspension of a hydrated
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (8)
1. A flame-retardant upholstery component comprising a core of a flame-collapsible (as hereinbefore defined) polurethane foam, the core being covered with a layer of foam material which has been impregnated with a flame-retardant substance.
2. A component according to Claim 1, in which the core is made of a foam comprising the reaction product of a polymeric polyol, a tolylene diisocyanate, a foam modifier, an anti-ageing additive and an anti-shrinkage agent for the foam.
3. A component according to claim 1, in which the core is made of a "high-resilience" foam.
4. A component according to Claim 1, 2 or 3, in which the flame-retardant substance comprises a suspension of a hydrated
aluminina in a natural or synthetic rubber latex.
5. A component according to any one of the preceding claims, in which the covered core is enclosed in a fabric casing.
6. A component according to Claim 5, in which the fabric casing has been treated with a flame-retardant substance.
7. An upholstery component, substantially as hereinbefore described, with reference to any one of Examples 1 to 3.
8. A method of making a flame-retardant upholstery component having a core of a flame-collapsible (as hereinbefore defined) polyurethane foam, in which the core is covered with a layer of foam material which has been impregnated with a flame-retardant substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB375878A GB1589858A (en) | 1978-05-19 | 1978-05-19 | Upholstery components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB375878A GB1589858A (en) | 1978-05-19 | 1978-05-19 | Upholstery components |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1589858A true GB1589858A (en) | 1981-05-20 |
Family
ID=9764407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB375878A Expired GB1589858A (en) | 1978-05-19 | 1978-05-19 | Upholstery components |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1589858A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0055081A1 (en) * | 1980-12-17 | 1982-06-30 | Enichem Elastomers Limited | Moulded foam cushioning |
| GB2116838A (en) * | 1982-03-22 | 1983-10-05 | British Vita Company Limited | Upholstery component |
| GB2157163A (en) * | 1984-04-06 | 1985-10-23 | British Vita | Upholstered articles |
| GB2162744A (en) * | 1984-06-02 | 1986-02-12 | Nottingham County Council | Flame retardant cushion and seat |
| GB2165447A (en) * | 1982-03-22 | 1986-04-16 | British Vita | Upholstery component |
| GB2181048A (en) * | 1985-10-04 | 1987-04-15 | Bernard Bedborough | Overlay |
| GB2237508A (en) * | 1989-10-27 | 1991-05-08 | Deborah Ann Powell | Baby wedge |
| GB2244000B (en) * | 1990-05-18 | 1993-09-22 | Teasdale S | Mattress |
-
1978
- 1978-05-19 GB GB375878A patent/GB1589858A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0055081A1 (en) * | 1980-12-17 | 1982-06-30 | Enichem Elastomers Limited | Moulded foam cushioning |
| GB2116838A (en) * | 1982-03-22 | 1983-10-05 | British Vita Company Limited | Upholstery component |
| GB2165447A (en) * | 1982-03-22 | 1986-04-16 | British Vita | Upholstery component |
| GB2157163A (en) * | 1984-04-06 | 1985-10-23 | British Vita | Upholstered articles |
| GB2162744A (en) * | 1984-06-02 | 1986-02-12 | Nottingham County Council | Flame retardant cushion and seat |
| GB2181048A (en) * | 1985-10-04 | 1987-04-15 | Bernard Bedborough | Overlay |
| GB2237508A (en) * | 1989-10-27 | 1991-05-08 | Deborah Ann Powell | Baby wedge |
| GB2244000B (en) * | 1990-05-18 | 1993-09-22 | Teasdale S | Mattress |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1176116A (en) | Polyurethane foam resistant to smoldering combustion and method of producing same | |
| US4504991A (en) | Fire-resistant mattress and high strength fire-retardant composite | |
| RU2040531C1 (en) | Method of preparing fireproof elastic polyurethane foam | |
| DE2618216C3 (en) | Use of a polychloroprene foam containing a charring agent and a hydrated inorganic compound to greatly reduce the flammability of upholstered furniture | |
| US3512192A (en) | Fire resistant mattress | |
| US4439472A (en) | Upholstery components | |
| DE2649222A1 (en) | IMPROVEMENTS OF OR RELATED TO FOAMS | |
| GB1589858A (en) | Upholstery components | |
| US4438220A (en) | Polyurethane foam-filled foam resistant to combustion and method of producing same | |
| US3889022A (en) | Flame retardant composite articles | |
| DE69029337D1 (en) | Zeolite-modified, water-foamed polyurethane foams | |
| US4486468A (en) | Fire retardant foam | |
| CA1248294A (en) | Polyester polyurethane foam based medical support pad | |
| US2610338A (en) | Protective fire resistant covering for matteresses | |
| EP0300708A1 (en) | Coated fire barriers for upholstered furnishings | |
| DE2734400A1 (en) | FLAME RESISTANT POLYURETHANE FOAM AND THE PROCESS FOR ITS MANUFACTURING | |
| US4294489A (en) | Upholstered furniture having improved flame resistance | |
| DE19915352A1 (en) | Extinguishing agent for extinguishing fires comprises potassium nitrate or potassium perchlorate, hydrogen-soluble fuel, and combustion rate regulator | |
| NL8004257A (en) | Fireproof polyurethane padding material - comprises polyurethane foam core sheathed in fabric impregnated with fireproofing agent | |
| GB2116838A (en) | Upholstery component | |
| DE3028254A1 (en) | Fireproof polyurethane padding material - comprises polyurethane foam core sheathed in fabric impregnated with fireproofing agent | |
| Damant et al. | Cigarette Ignition Behavior of Commercial Upholstery Cover Fabrics | |
| EP0073937A1 (en) | Polyurethane foams | |
| GB2165447A (en) | Upholstery component | |
| EP0055081B1 (en) | Moulded foam cushioning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |