GB2081319A - Reinforced Fibrous Sheet - Google Patents

Reinforced Fibrous Sheet Download PDF

Info

Publication number
GB2081319A
GB2081319A GB8023237A GB8023237A GB2081319A GB 2081319 A GB2081319 A GB 2081319A GB 8023237 A GB8023237 A GB 8023237A GB 8023237 A GB8023237 A GB 8023237A GB 2081319 A GB2081319 A GB 2081319A
Authority
GB
United Kingdom
Prior art keywords
fibres
fabric
sheet
wet
matrix
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.)
Withdrawn
Application number
GB8023237A
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.)
Permanite Ltd
Original Assignee
Permanite Ltd
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 Permanite Ltd filed Critical Permanite Ltd
Priority to GB8023237A priority Critical patent/GB2081319A/en
Publication of GB2081319A publication Critical patent/GB2081319A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/32—Multi-ply with materials applied between the sheets
    • D21H27/34—Continuous materials, e.g. filaments, sheets, nets
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/02—Roof covering by making use of flexible material, e.g. supplied in roll form of materials impregnated with sealing substances, e.g. roofing felt

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforced Plastic Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

An integral flexible reinforced sheet comprises an open mesh reinforcing textile fabric extending through and penetrated by a matrix of a wet-laid fibrous fabric. Such a reinforced sheet is suitable for impregnation and coating with bituminous material to provide a waterproof felt, e.g. an underslating felt. For the latter purpose the matrix fabric preferably comprises waste fibres and the reinforcing fabric is preferably a glass filament crenette.

Description

SPECIFICATION Reinforced Fibrous Sheet This invention relates to reinforced fibrous sheet and provides an integral flexible reinforced sheet comprising an open mesh reinforcing textile fabric extending through and pentrated by a matrix of a wet-laid fibrous fabric.
Such a reinforced sheet can be made by continuously wet laying fibres onto an advancing support, and continuously leading the reinforcing fabric from a supply and depositing it over the wet-laid fibres, continuously wet-laying further fibres over the depositd reinforcing fabric, and dewatering the resulting composite to form a coherent integral sheet.
The reinforcing fabric might be of or include natural fibre, e.g. hessian, but is preferably rotproof, e.g. of synthetic plastics or inorganic material, preferably glass filaments. The reinforcing fabric is suitably in the form of a net, preferably of large mesh size (for example about 1 cm2). The reinforcing fabric is suitably a crenette, especially when it is of glass filaments.
The matrix fabric may be a paper, e.g. Kraft paper. Another suitable matrix fabric is a paper or like sheet comprising waste fibre, e.g. rag and/or rope fibre. The matrix fabric may comprise at least one of natural (e.g. cellulosic) fibres, synthetic plastics fibres, and inorganic (e.g. glass, asbestos, mineral wool) fibres.
The reinforced sheet according to the invention can be impregnated and/or coated with waterproofing material for a variety of purposes. It may for example be impregnated and/or coated with wax and/or synthetic plastics material to provide strong waterproof packaging sheet.
The sheet material according to the invention is also suitable for saturation and coating with bituminous or coal tar pitch-containing material for use as waterproof felt, e.g. underslating.
For the latter purposes the reinforcing fabric is suitably of glass filament crenette, and the matrix fabric may comprise waste fibres e.g. rag and/or rope hemp fibres. Currently available underslating consists of a wet-laid fibrous fabric having a reinforcing fabric (e.g. of hessian) laminated thereto, the resulting laminate being saturated and coated with bitumen. This is made by saturating the preformed wet-laid fabric with saturant bitumen, applying the reinforcing fabric thereto, and then coating the resulting composite with coating bitumen.The step of laminating the wet-laid and reinforcing fabrics poses problems, with the two fabrics tending to come out of alignment as they are fed to the lamination step, leading to the formation of some second quality product in which the reinforcement projects along one side of the laminate and has to be cut away and is absent from the other edge portion of the product. Preforming the integral reinforced sheet according to the invention avoids this problem and permits the production of saturated and coated felt of uniform quality.
Bituminous underslating felt according to the invention employing glass filament crenette as the reinforcing fabric can have the strength and handing properties of conventional laminated hessian-reinforced underslating and can be cut and trimmed readily by the installer using his conventional tools.
In a specific Example of a bituminous underslating felt according to the invention, the matrix fabric is mainly of waste-fibres and weighs about 1 50 g/m2, and the reinforcing fabric is a glass filament crenette having a mesh size of about 1 cmt062. This integral reinforced sheet is saturated with saturant bitumen accoing tt BS.747 and then coated on both faces with coating bitumen according to BS.747 to give a final product weight of about 22 kg/1 5m2.
Claims
1. An integral flexible reinforced sheet comprising an open mesh reinforcing textile fabric extending through and penetrated by a matrix of a wet-laid fibrous fabric.
2. A reinforced sheet according to claim 1 impregnated and/or coated with waterproof material.
3. A sheet according to claim 1 impregnated and coated with bituminous material.
4. A sheet according to any of claims 1 to 3 wherein the matrix fabric is of synthetic plastics or inorganic material.
5. A sheet according to claim 4 wherein the reinforcing fabric is of glass filaments.
6. A sheet according to any of claims 1 to 5 wherein the reinforcing fabric is a crenette.
7. A sheet according to any of claims 1 to 6 wherein the matrix fabric comprises at least one of cellulosic, synthetic plastics, and inorganic fibres.
8. A sheet according to claim 7 wherein the matrix fabric comprises at least one of rag waste fibres, rope fibres, synthetic plastics fibres, asbestos fibres, glass fibres, and mineral wool fibres.
9. A method of making a sheet according to claim 1, the method comprising wet-laying fibres onto an advancing support, continuously leading the reinforcing fabric from a supply and depositing it over the wet-laid fibres, continuously wet-laying further fibres over the deposited reinforcing fabric, and dewatering the resulting composite to form a coherent integral sheet.
10. A method according to claim 9 and substantially as hereinbefore described.
New Claims or Amendments to Claims filed on 8 Sept 1981.
Superseded Claims 1, 4, 7, 8, 9.
New or Amended Claims: 1, 2, 5, 8, 9. Claims remumbered-2, 3, 5 and 6. Change of appendancy-clairn 10.
1. A method of making an integral flexible reinforced sheet, the method comprising wetlaying fibres onto an advancing support, continuously leading an open mesh reinforcing
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (10)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Reinforced Fibrous Sheet This invention relates to reinforced fibrous sheet and provides an integral flexible reinforced sheet comprising an open mesh reinforcing textile fabric extending through and pentrated by a matrix of a wet-laid fibrous fabric. Such a reinforced sheet can be made by continuously wet laying fibres onto an advancing support, and continuously leading the reinforcing fabric from a supply and depositing it over the wet-laid fibres, continuously wet-laying further fibres over the depositd reinforcing fabric, and dewatering the resulting composite to form a coherent integral sheet. The reinforcing fabric might be of or include natural fibre, e.g. hessian, but is preferably rotproof, e.g. of synthetic plastics or inorganic material, preferably glass filaments. The reinforcing fabric is suitably in the form of a net, preferably of large mesh size (for example about 1 cm2). The reinforcing fabric is suitably a crenette, especially when it is of glass filaments. The matrix fabric may be a paper, e.g. Kraft paper. Another suitable matrix fabric is a paper or like sheet comprising waste fibre, e.g. rag and/or rope fibre. The matrix fabric may comprise at least one of natural (e.g. cellulosic) fibres, synthetic plastics fibres, and inorganic (e.g. glass, asbestos, mineral wool) fibres. The reinforced sheet according to the invention can be impregnated and/or coated with waterproofing material for a variety of purposes. It may for example be impregnated and/or coated with wax and/or synthetic plastics material to provide strong waterproof packaging sheet. The sheet material according to the invention is also suitable for saturation and coating with bituminous or coal tar pitch-containing material for use as waterproof felt, e.g. underslating. For the latter purposes the reinforcing fabric is suitably of glass filament crenette, and the matrix fabric may comprise waste fibres e.g. rag and/or rope hemp fibres. Currently available underslating consists of a wet-laid fibrous fabric having a reinforcing fabric (e.g. of hessian) laminated thereto, the resulting laminate being saturated and coated with bitumen. This is made by saturating the preformed wet-laid fabric with saturant bitumen, applying the reinforcing fabric thereto, and then coating the resulting composite with coating bitumen.The step of laminating the wet-laid and reinforcing fabrics poses problems, with the two fabrics tending to come out of alignment as they are fed to the lamination step, leading to the formation of some second quality product in which the reinforcement projects along one side of the laminate and has to be cut away and is absent from the other edge portion of the product. Preforming the integral reinforced sheet according to the invention avoids this problem and permits the production of saturated and coated felt of uniform quality. Bituminous underslating felt according to the invention employing glass filament crenette as the reinforcing fabric can have the strength and handing properties of conventional laminated hessian-reinforced underslating and can be cut and trimmed readily by the installer using his conventional tools. In a specific Example of a bituminous underslating felt according to the invention, the matrix fabric is mainly of waste-fibres and weighs about 1 50 g/m2, and the reinforcing fabric is a glass filament crenette having a mesh size of about 1 cmt062. This integral reinforced sheet is saturated with saturant bitumen accoing tt BS.747 and then coated on both faces with coating bitumen according to BS.747 to give a final product weight of about 22 kg/1 5m2. Claims
1. An integral flexible reinforced sheet comprising an open mesh reinforcing textile fabric extending through and penetrated by a matrix of a wet-laid fibrous fabric.
2. A reinforced sheet according to claim 1 impregnated and/or coated with waterproof material.
3. A sheet according to claim 1 impregnated and coated with bituminous material.
4. A sheet according to any of claims 1 to 3 wherein the matrix fabric is of synthetic plastics or inorganic material.
5. A sheet according to claim 4 wherein the reinforcing fabric is of glass filaments.
6. A sheet according to any of claims 1 to 5 wherein the reinforcing fabric is a crenette.
7. A sheet according to any of claims 1 to 6 wherein the matrix fabric comprises at least one of cellulosic, synthetic plastics, and inorganic fibres.
8. A sheet according to claim 7 wherein the matrix fabric comprises at least one of rag waste fibres, rope fibres, synthetic plastics fibres, asbestos fibres, glass fibres, and mineral wool fibres.
9. A sheet according to claim 8 wherein the fibrous matrix comprises at least one of rag waste fibres, rope fibres, synthetic plastics fibres, asbestos fibres, glass fibres, and mineral wool fibres.
9. A method of making a sheet according to claim 1, the method comprising wet-laying fibres onto an advancing support, continuously leading the reinforcing fabric from a supply and depositing it over the wet-laid fibres, continuously wet-laying further fibres over the deposited reinforcing fabric, and dewatering the resulting composite to form a coherent integral sheet.
10. A method according to claim 9 and substantially as hereinbefore described.
New Claims or Amendments to Claims filed on 8 Sept 1981.
Superseded Claims 1, 4, 7, 8, 9.
New or Amended Claims: 1, 2, 5, 8, 9. Claims remumbered-2, 3, 5 and 6. Change of appendancy-clairn
10.
1. A method of making an integral flexible reinforced sheet, the method comprising wetlaying fibres onto an advancing support, continuously leading an open mesh reinforcing textile fabric from a supply and depositing it over the wet-laid fibres, continuously wet-laying further fibres over the deposited reinforcing fabric, and ewatering the resulting composite to form a coherent integral sheet having the reinforcing fabric extending through and penetrated by a wetlaid and dewatered fibrous matrix.
2. A reinforced sheet obtained by a method according to claim 1.
5. A sheet according to any of claims 2 to 4 wherein the reinforcing fabric is of synthetic plastics or inorganic material.
8. A sheet according to any of claims 2 to 7 wherein the fibrous matrix comprises at least one of cellulosic, synthetic plastics, and inorganic fibres.
GB8023237A 1980-07-16 1980-07-16 Reinforced Fibrous Sheet Withdrawn GB2081319A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8023237A GB2081319A (en) 1980-07-16 1980-07-16 Reinforced Fibrous Sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8023237A GB2081319A (en) 1980-07-16 1980-07-16 Reinforced Fibrous Sheet

Publications (1)

Publication Number Publication Date
GB2081319A true GB2081319A (en) 1982-02-17

Family

ID=10514814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8023237A Withdrawn GB2081319A (en) 1980-07-16 1980-07-16 Reinforced Fibrous Sheet

Country Status (1)

Country Link
GB (1) GB2081319A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002022346A2 (en) * 2000-09-12 2002-03-21 Kemlite Company, Inc. Tear-resistant fiberglass reinforced plastic panel and method of manufacturing such panels
EP1186726A3 (en) * 2000-09-08 2003-01-08 Röttger, Wilhelm Plastically deformable web

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1186726A3 (en) * 2000-09-08 2003-01-08 Röttger, Wilhelm Plastically deformable web
WO2002022346A2 (en) * 2000-09-12 2002-03-21 Kemlite Company, Inc. Tear-resistant fiberglass reinforced plastic panel and method of manufacturing such panels
WO2002022346A3 (en) * 2000-09-12 2002-08-01 Kemlite Company Inc Tear-resistant fiberglass reinforced plastic panel and method of manufacturing such panels

Similar Documents

Publication Publication Date Title
CA1119206A (en) Fibrous sheet materials
US4245689A (en) Dimensionally stable cellulosic backing web
US2634208A (en) Building board
US4378271A (en) Starch bound paper
US4273825A (en) Electric insulating sheet
US4576858A (en) Material based on a non-woven textile lap which may be used as reinforcement for impermeable coverings
IE782286L (en) Fibrous sheet
GB1128360A (en) Clutch facing
ZA857469B (en) Laminate
WO1994014885A1 (en) Gypsum microfiber sheet material
GB1128359A (en) Clutch facing
GB2367837A (en) Method of forming a non-woven web from recycled cellulose fibres and untreated clarifier sludge
US2943010A (en) Composite fabric and method of making the same
GB2081319A (en) Reinforced Fibrous Sheet
US2272144A (en) Covering structure
US1694523A (en) Waterproof sheet structure
US2699389A (en) Reinforced paper and method of making same
CA1082088A (en) Reinforced corrugated paper board and method of producing the same
GB1146506A (en) Improvements in and relating to the manufacture of plaster and like board
US2295070A (en) Felt lining
US3252822A (en) Method of making a bituminous coated sheet of synthetic mineral wool fibers
CA2637828A1 (en) Industrial hemp low-density fiberboard
CA1147541A (en) Glass fiber mat
US1984814A (en) Composite material
GB2031043A (en) Fibrous Sheet Material

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)