WO1992003283A1 - Method of manufacturing fiber-reinforced plastics material - Google Patents

Method of manufacturing fiber-reinforced plastics material Download PDF

Info

Publication number
WO1992003283A1
WO1992003283A1 PCT/FI1991/000194 FI9100194W WO9203283A1 WO 1992003283 A1 WO1992003283 A1 WO 1992003283A1 FI 9100194 W FI9100194 W FI 9100194W WO 9203283 A1 WO9203283 A1 WO 9203283A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
foam
reinforced plastics
plastics material
web
Prior art date
Application number
PCT/FI1991/000194
Other languages
French (fr)
Inventor
Kay RÖKMAN
Original Assignee
A. Ahlstrom Corporation
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 A. Ahlstrom Corporation filed Critical A. Ahlstrom Corporation
Publication of WO1992003283A1 publication Critical patent/WO1992003283A1/en

Links

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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
    • B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
    • B29B15/10—Coating or impregnating independently of the moulding or shaping step
    • B29B15/105—Coating or impregnating independently of the moulding or shaping step of reinforcement of definite length with a matrix in solid form, e.g. powder, fibre or sheet form
    • 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
    • C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
    • D06N3/0045—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by applying a ready-made foam layer; obtained by compressing, crinkling or crushing a foam layer, e.g. Kaschierverfahren für Schaumschicht
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/38—Inorganic fibres or flakes siliceous
    • D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/35—Polyalkenes, e.g. polystyrene
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
    • D21H21/56—Foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment

Definitions

  • the present invention relates to a method of manufacturing fiber-reinforced plastics material.
  • Fiber-reinforced plastics materials can be produced by both wet and dry forming methods.
  • a wet forming method the fiber web is produced by blending a water dispersion of reinforcing fibers and particle-form plastics material and by filtering the water out.
  • a dry method a web of the reinforcing fibers is formed and onto the web a powdery plastics matrix is dosed. When the web, after it has been formed, is heated the plastics melts to an extent and is bound to the reinforcing fibers.
  • the use of the fiber-reinforced materials produced in this way has been limited by the fact that they are too thick and heavy for many purposes.
  • the object of the present invention is to provide very thin and light but strong fiber-reinforced plastics materials.
  • Bound non-woven fiber mats have been produced by forming a web of fibers, for example glass fibers, and impregnating it with a binding agent.
  • the binding agent has been sprayed onto the fiber web, or a foam has been produced of the binding agent solution or suspension which has been applied onto the fiber mat to be impregnated. After that, a bound mat has been produced by curing the binding agent by heat.
  • Mats of this kind can be used for example as a coating, facing or insulation materials.
  • the method of the present invention can be used for producing thin mouldable coating materials, such as the coating used in the ceiling of a car for example, the strength of which material is, however, remarkably better than the strenght of conventional fiber mats. Because the material is thin also costs are reduced.
  • a frothed water dispersion of a binding agent is applied onto a reinforcing fiber web, which is preferably prebound, the coated fiber web is dried, heated and pressed in order to produce a fiber-reinforced plastics material; and a characteristic feature of the method is that said foam contains a powdery thermoplastic matrix.
  • the fiber web is preferably a fiber glass mat prebound by a thermoplastic latex.
  • the mat can contain also, or alternatively, other reinforcing fibers such as carbon fiber or aramid fiber.
  • the initial surface weight of the fiber mat is 10 - 100 g m -2 .
  • the foam is preferably formed of a binding agent which is a water soluble thermoplastic latex.
  • a binding agent which is a water soluble thermoplastic latex.
  • polyvinyl acetate, ethylvinyl acetate, acrylic and corresponding materials are suitable.
  • thermoplastic materials such as polyethylene, polypropylene and corresponding agents, are suitable to be used as the matrix powder.
  • the matrix powder is added to the water solution of the latex and the mixture is frothed by mixing air into the dispersion.
  • the foam is generated by methods known per se, for example mechanically.
  • the foam is pumped onto the fiber web on a wire and applied by methods know per se, for example by a scraper knife, to form a layer of the desired thickness.
  • Foam can be applied on one or both sides of the mat.
  • the coated fiber mat is dried and heated for example in an infrared oven and pressed in a nip which gives the desired thickness and appearance depending on the surface pattern of the rolls.
  • the dispersion of the binding agent to be frothed and the matrix powder preferably contains auxiliary frothing agent and foam stabilizing agent in order to produce a foam of the desired type.
  • the density of the foam is preferably 0.05 - 0.3 kg dm -3 .
  • the foam can be either stable or non-stable.
  • a stable foam gives the fiber mat an appearance of expanded plastics.
  • the method of the present invention provides for production of thin but strong fiber-reinforced plastics materials with a surface weight of 20 - 150 g m -2 .
  • polypropylene powder and auxiliary foaming agent were added to a water solution of polyvinyl acetate latex.
  • the dispersion was frothed by mechanically mixing air with it.
  • the density of the foam was 0.3 kg m ⁇ 3 .
  • the foam was pumped onto a glass fiber felt having a surface weight of 50 g m ⁇ 2 and applied by means of a scraper on both sides of the felt to form a 0.6 mm thick layer.
  • the coated fiber mat was dried and heated to 150 °C and pressed between rolls to achieve the desired thickness and surface.
  • the produced fiber-reinforced plastics material had a thickness of approx. 0.2 mm, a surface weight of 150 g m ⁇ 2 and a tensile modulus of 50 N mm -2 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

The present invention relates to a method of manufacturing a fiber-reinforced plastics material. In this method, a foam of a binding agent containing powdery thermoplastic matrix is applied onto a reinforcing fiber web which is then dried, heated and pressed.

Description

METHOD OF MANUFACTURING FIBER-REINFORCED PLASTICS MATERIAL
TECHNICAL FIELD The present invention relates to a method of manufacturing fiber-reinforced plastics material.
BACKGROUND ART
Fiber-reinforced plastics materials can be produced by both wet and dry forming methods. In a wet forming method, the fiber web is produced by blending a water dispersion of reinforcing fibers and particle-form plastics material and by filtering the water out. In a dry method, a web of the reinforcing fibers is formed and onto the web a powdery plastics matrix is dosed. When the web, after it has been formed, is heated the plastics melts to an extent and is bound to the reinforcing fibers. However, the use of the fiber-reinforced materials produced in this way has been limited by the fact that they are too thick and heavy for many purposes.
The object of the present invention is to provide very thin and light but strong fiber-reinforced plastics materials.
Bound non-woven fiber mats have been produced by forming a web of fibers, for example glass fibers, and impregnating it with a binding agent. The binding agent has been sprayed onto the fiber web, or a foam has been produced of the binding agent solution or suspension which has been applied onto the fiber mat to be impregnated. After that, a bound mat has been produced by curing the binding agent by heat. Mats of this kind can be used for example as a coating, facing or insulation materials.
DISCLOSURE OF INVENTION
The method of the present invention can be used for producing thin mouldable coating materials, such as the coating used in the ceiling of a car for example, the strength of which material is, however, remarkably better than the strenght of conventional fiber mats. Because the material is thin also costs are reduced.
BEST MODE FOR CARRYING OUT THE INVENTION
In the method of the present invention, a frothed water dispersion of a binding agent is applied onto a reinforcing fiber web, which is preferably prebound, the coated fiber web is dried, heated and pressed in order to produce a fiber-reinforced plastics material; and a characteristic feature of the method is that said foam contains a powdery thermoplastic matrix.
The fiber web is preferably a fiber glass mat prebound by a thermoplastic latex. Besides glass fiber, the mat can contain also, or alternatively, other reinforcing fibers such as carbon fiber or aramid fiber. The initial surface weight of the fiber mat is 10 - 100 g m-2.
The foam is preferably formed of a binding agent which is a water soluble thermoplastic latex. For example polyvinyl acetate, ethylvinyl acetate, acrylic and corresponding materials are suitable.
Many thermoplastic materials such as polyethylene, polypropylene and corresponding agents, are suitable to be used as the matrix powder.
The matrix powder is added to the water solution of the latex and the mixture is frothed by mixing air into the dispersion. The foam is generated by methods known per se, for example mechanically. The foam is pumped onto the fiber web on a wire and applied by methods know per se, for example by a scraper knife, to form a layer of the desired thickness. Foam can be applied on one or both sides of the mat. The coated fiber mat is dried and heated for example in an infrared oven and pressed in a nip which gives the desired thickness and appearance depending on the surface pattern of the rolls.
The dispersion of the binding agent to be frothed and the matrix powder preferably contains auxiliary frothing agent and foam stabilizing agent in order to produce a foam of the desired type. The density of the foam is preferably 0.05 - 0.3 kg dm-3.
Depending on the density, the foam can be either stable or non-stable. The more stable the foam is the more of it remains on the surface of the mat. Thus, a stable foam gives the fiber mat an appearance of expanded plastics. A non-stable foam and thus also the matrix powder particles mostly penetrate into the fiber web whereby a thinner surface layer but a stronger matrix is produces than with a stable foam.
The method of the present invention provides for production of thin but strong fiber-reinforced plastics materials with a surface weight of 20 - 150 g m-2.
EXAMPLE
50 % by weight of polypropylene powder and auxiliary foaming agent were added to a water solution of polyvinyl acetate latex. The dispersion was frothed by mechanically mixing air with it. The density of the foam was 0.3 kg m~3. The foam was pumped onto a glass fiber felt having a surface weight of 50 g m~2 and applied by means of a scraper on both sides of the felt to form a 0.6 mm thick layer. The coated fiber mat was dried and heated to 150 °C and pressed between rolls to achieve the desired thickness and surface. The produced fiber-reinforced plastics material had a thickness of approx. 0.2 mm, a surface weight of 150 g m~2 and a tensile modulus of 50 N mm-2.

Claims

WE CLAIM:
1. A method of producing iber-reinforced plastics material in which a frothed water dispersion of a binding agent is applied in the form of a foam onto a reinforcing fiber web, the coated fiber web is dried, heated and pressed, characterized in that said foam contains a powdery thermoplastic matrix.
2. A method as claimed in claim 1, characterized in that the reinforcing fiber is glass fiber.
3. A method as claimed in claim 1, characterized in that the fiber web is prebound.
PCT/FI1991/000194 1990-08-21 1991-06-20 Method of manufacturing fiber-reinforced plastics material WO1992003283A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI904212 1990-08-21
FI904212A FI904212A (en) 1990-08-21 1990-08-21 FOERFARANDE FOER FRAMSTAELLNING AV FIBERSTAERKT PLASTMATERIAL.

Publications (1)

Publication Number Publication Date
WO1992003283A1 true WO1992003283A1 (en) 1992-03-05

Family

ID=8530975

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1991/000194 WO1992003283A1 (en) 1990-08-21 1991-06-20 Method of manufacturing fiber-reinforced plastics material

Country Status (3)

Country Link
FI (1) FI904212A (en)
NO (1) NO913261L (en)
WO (1) WO1992003283A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11255051B2 (en) 2017-11-29 2022-02-22 Kimberly-Clark Worldwide, Inc. Fibrous sheet with improved properties
US11313061B2 (en) 2018-07-25 2022-04-26 Kimberly-Clark Worldwide, Inc. Process for making three-dimensional foam-laid nonwovens
US11591755B2 (en) 2015-11-03 2023-02-28 Kimberly-Clark Worldwide, Inc. Paper tissue with high bulk and low lint

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1443732A (en) * 1973-08-03 1976-07-21 Shell Int Research Method of producing an article of fibre-reinforced polyurethane foam
EP0002464A1 (en) * 1977-12-08 1979-06-27 Bayer Ag Process for solvent-free coating of substrates
EP0156062A2 (en) * 1983-10-19 1985-10-02 Scapa-Porritt Limited Papermakers fabrics
US4791019A (en) * 1987-02-20 1988-12-13 Toyo Tire & Rubber Company Limited Polyurethane foam interior finishing material having facing and process for preparing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1443732A (en) * 1973-08-03 1976-07-21 Shell Int Research Method of producing an article of fibre-reinforced polyurethane foam
EP0002464A1 (en) * 1977-12-08 1979-06-27 Bayer Ag Process for solvent-free coating of substrates
EP0156062A2 (en) * 1983-10-19 1985-10-02 Scapa-Porritt Limited Papermakers fabrics
US4791019A (en) * 1987-02-20 1988-12-13 Toyo Tire & Rubber Company Limited Polyurethane foam interior finishing material having facing and process for preparing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11591755B2 (en) 2015-11-03 2023-02-28 Kimberly-Clark Worldwide, Inc. Paper tissue with high bulk and low lint
US11255051B2 (en) 2017-11-29 2022-02-22 Kimberly-Clark Worldwide, Inc. Fibrous sheet with improved properties
US11313061B2 (en) 2018-07-25 2022-04-26 Kimberly-Clark Worldwide, Inc. Process for making three-dimensional foam-laid nonwovens
US11788221B2 (en) 2018-07-25 2023-10-17 Kimberly-Clark Worldwide, Inc. Process for making three-dimensional foam-laid nonwovens

Also Published As

Publication number Publication date
FI904212A0 (en) 1990-08-21
NO913261L (en) 1992-02-24
FI904212A (en) 1992-02-22
NO913261D0 (en) 1991-08-20

Similar Documents

Publication Publication Date Title
US6497787B1 (en) Process of manufacturing a wet-laid veil
CA1099430A (en) Flexible building sheet products
CA1215890A (en) Method for the production of fibre composite material impregnated with resin
DE3780419T2 (en) MANUFACTURING METHOD FOR A LAMINATE.
US3661674A (en) Method for the manufacture of flexible sheet materials
US4908176A (en) Process for producing moldable non-woven fabrics
CA2522935A1 (en) Nonwoven mat, method for production thereof and fibre composite
US5302445A (en) Process for making a reinforced fibrous mat and product made therefrom
EP0237665B1 (en) Process for producing moldable non-woven fabrics
CA1113661A (en) Composite material
WO1992003283A1 (en) Method of manufacturing fiber-reinforced plastics material
US20030061768A1 (en) Composite mat product for roofing construction
JP3574209B2 (en) Lightweight stampable sheet skin bonded product
JP2003181965A (en) Papermaking-processed stampable sheet, lightweight stampable sheet molding, and lightweight stampable sheet skin-laminated product
JP3409948B2 (en) Papermaking method stampable sheet, lightweight stampable sheet molded product and lightweight stampable sheet skin bonded product
JP3623344B2 (en) Wood finish
JPS58126140A (en) Board for molding
JPS62299582A (en) Production of nonwoven fabric having excellent elasticity
JPS6335862A (en) Fiber molded body
JPS6256255B2 (en)
JPS63309659A (en) Fiber molded body
JP2585720B2 (en) Architectural material and method for producing the same
JPH01180339A (en) Preparation of laminated material
JP3623345B2 (en) Wood finish
JP3623346B2 (en) Wood finish

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

NENP Non-entry into the national phase

Ref country code: CA