GB2227206A - Thermal protection spark arresting blanket - Google Patents

Thermal protection spark arresting blanket Download PDF

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Publication number
GB2227206A
GB2227206A GB8901366A GB8901366A GB2227206A GB 2227206 A GB2227206 A GB 2227206A GB 8901366 A GB8901366 A GB 8901366A GB 8901366 A GB8901366 A GB 8901366A GB 2227206 A GB2227206 A GB 2227206A
Authority
GB
United Kingdom
Prior art keywords
thermal protection
glass
core
blanket
protection blanket
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.)
Granted
Application number
GB8901366A
Other versions
GB8901366D0 (en
GB2227206B (en
Inventor
Mark Bernard Sadler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB8901366A priority Critical patent/GB2227206B/en
Publication of GB8901366D0 publication Critical patent/GB8901366D0/en
Publication of GB2227206A publication Critical patent/GB2227206A/en
Application granted granted Critical
Publication of GB2227206B publication Critical patent/GB2227206B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/003—Fire-resistant or fire-fighters' clothes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P1/00—Safety devices independent of the control and operation of any machine
    • F16P1/06—Safety devices independent of the control and operation of any machine specially designed for welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The blanket incorporates a core of glass tear resistant cloth (1) with a layer of needled glass felt (2) (3) having a melting point high enough to resist complete thermal breakdown, but low enough to partially melt causing hot metal globules for a welding cutting or fettling operation to be encapsulated or arrested. <IMAGE>

Description

THERMAL PROTECTION SPARK ARRESTING BLANKET The invention relates to a Glass Needled Felt construction having outstanding spark and not metal globule arresting properties.
The product is designed as a Welding and Oxyacetylene protective blanket for use in the petroleum, Foundry, Automotive and Engineering Industries where for example products, equipment and personel need protection from falling hot metal globules.
At present protection is provided by oven asbestos or Glass Cloth having a smooth or semi smooth surface, hot metal is not arrested by diverted long the face of the cloth and depending on the blanket size or the globule temperature hopefully settling in a safe area.
The principle of Needling Fibres has been establisned using fan Made (nylon or similar) fibres being used as a low cost insulator in the clothing and bedding industry.
The invention utilizes the basic process on Needling Fibres but using high temperature resistant fibres specifically adapted for a purpose not previously been visualized.
Normally Needled Fibres produce a lou tear strength material the product usually being used as a filling encapsulated in a cloth beg,-for-example bedding, anoraks etc., The invention improves the process by incorporating a glass woven cloth monofilament core. A core weight in the range of 50 to 400 grams per square metre is suitable for most applications, but lighter weights eg 50 to 100 grams per square metre are sufficient.
The glass for Needling would preferably be 'Et glass because of its higher temperature resistance (6500C), but other grades of glass could also be used. The most suitable thickness found in tests is between 6mn and 12mm thick having an equal thickness of Needled glass on either side of the core cloth. Other thicknesses from 3mm to 25mm could also be used.
Needled glass without core cloth could on some occasions be satisfactorily used but where large areas are draped or suspended in the vertical position, the material weight could exceed the tear strength. For this reason uncored felt should not normally exceed 2 square metres if suspended.
The density of the Needled felt could be between 80kg M3 and 16 OKg M but preferable a density of 13OKg M is most suitable. Should the density be too low hot metal globules exceeding 12000C could penetrate the felt. It is for this reason that densities should not be below 80Kg M3 particularly where steel and stainless steel welding fallout is to be arrested.
Welding and Oxyacetylene cutting processes produce high temperature fallout, globules of molten metal on leaving the torch exceed 15000C. This temperature drops fairly rapidly dependant on ambient temperature and 9 lobule size. Because of the needled glass felt construction White/Red hot metal glohules of molten metal (normally exceeding 1200 C) are arrested on the surface of the blanket melting upto lmm of the felt (when used in the horozontal position). Lhen draped t an engle over a componant to be protected, the depth OF penetration is normally reduced, this depends on the blanket angle.
At vertical or near vertical the arresting action could be considerably reduced.
In tests the blanket showed outstanding resistance to direct flame contact, this would for example make the product suitable for use where a plumbing soldering/brezing operation is taking place. In some cases continuous flame exposure for as much as 3n minutes can be withstood without appreciable material breakdown.
OIRECT FLAME CONTACT TEST USING BUTANE TORCH AT APPROXIMATELY 1000 0C Tested Period Material Thickness 6mm 12mm 25mm 15 seconds 190 0C 850C 45 C Cold face temp.
30 seconds 345 0C 210 0C 140 C Cold face temp.
60 seconds 500 C 270 C 65 C Cold face temp.
Ped in vertical position.
HOT METAL SPRAY FALLOUT TEST Continuous flow from Oxyacetylene Torch cutting mild steel concentrated fallout on area of 50cm x 50cm placed in horozontal position in fixed flame, set at one metre from torch.
Thickness Breakthrough Minutes @Breakdown 6mm 5mm diemeter 7mins 12mm None after 12mins Approx 60, depth @ 25mm None efter 12mins Approx 30% depth * * Penetration at worst point approximately 50 mm diameter.
Under normal usage a more widespread flow of hot metal would take place extending the rate of surface breakdown.
Having high levels of flame and spark resistance the product is ideal for:a. Welding blankets for use where welding and oxyacetylene cutting processes are taking place.
b. As a thermal barrier for example as a plumbers pad where direct or indirect flame contact surrounding a soldering/brazing operation is taking place. The product has superior drape qualities compared with conventional woven cloth blankets and is easily cut and shaped to make machinery/componant production protectors.

Claims (6)

1. A thermal protection blanket comprising a core of glass tear resistant cloth enveloped by a layer of nestled glass felt.
2. A thermal protection blanket as claimed in claim (1) for use in place of existing asbestos and glass cloth products for protecting components, equipment and personel from hot metal fallout.
3. A thermal protection blanket as in claim (1) or claim (2) where the core weight is between 50 and 4no grams per square metre.
4. A thermal protection blanket as claimed in any one of claims 1-3 which has a thickness from 3-25mm.
5. A thermal protection blanket as claimed in any proceeding claim wherein the cloth core is made of woven monofilament glass yarn.
6. A thermal protection blanket as claimed in preceeding claims having tear resistant glass woven core with needled t Et glass equally coated on either face of cloth core.
-7. A thermal protection blanket comprising a sandwiched tear resistant core coated on one or both side; with needled glass felt having a thickness of from 6-12mm and a density of 80 to 160Kg 8, A thermal protection blanket substantially as herein described with reference to and as illustrated in the accompanying drawing.
GB8901366A 1989-01-23 1989-01-23 Thermal protection spark arresting blanket Expired - Lifetime GB2227206B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8901366A GB2227206B (en) 1989-01-23 1989-01-23 Thermal protection spark arresting blanket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8901366A GB2227206B (en) 1989-01-23 1989-01-23 Thermal protection spark arresting blanket

Publications (3)

Publication Number Publication Date
GB8901366D0 GB8901366D0 (en) 1989-03-15
GB2227206A true GB2227206A (en) 1990-07-25
GB2227206B GB2227206B (en) 1992-10-07

Family

ID=10650420

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8901366A Expired - Lifetime GB2227206B (en) 1989-01-23 1989-01-23 Thermal protection spark arresting blanket

Country Status (1)

Country Link
GB (1) GB2227206B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1370786A (en) * 1971-11-08 1974-10-16 Marling Ind Ltd Fabrics
GB1370787A (en) * 1971-11-08 1974-10-16 Marling Ind Ltd Sheet reinforcement materials
GB1443754A (en) * 1972-10-31 1976-07-28 Bayer Ag Composite fabric for reinforcing the outer layers of high- strength foam mouldings
GB1579630A (en) * 1976-04-27 1980-11-19 Huyck Corp Filter fabrics

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1370786A (en) * 1971-11-08 1974-10-16 Marling Ind Ltd Fabrics
GB1370787A (en) * 1971-11-08 1974-10-16 Marling Ind Ltd Sheet reinforcement materials
GB1443754A (en) * 1972-10-31 1976-07-28 Bayer Ag Composite fabric for reinforcing the outer layers of high- strength foam mouldings
GB1579630A (en) * 1976-04-27 1980-11-19 Huyck Corp Filter fabrics

Also Published As

Publication number Publication date
GB8901366D0 (en) 1989-03-15
GB2227206B (en) 1992-10-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960123