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GB1455843A - Paper makers wet felts - Google Patents

Paper makers wet felts

Info

Publication number
GB1455843A
GB1455843A GB478073A GB478073A GB1455843A GB 1455843 A GB1455843 A GB 1455843A GB 478073 A GB478073 A GB 478073A GB 478073 A GB478073 A GB 478073A GB 1455843 A GB1455843 A GB 1455843A
Authority
GB
United Kingdom
Prior art keywords
fibres
polypropylene
hydrophobic
layer
treated
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
Application number
GB478073A
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.)
Scapa Blackburn Ltd
Original Assignee
Scapa Porritt 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 Scapa Porritt Ltd filed Critical Scapa Porritt Ltd
Priority to GB478073A priority Critical patent/GB1455843A/en
Priority claimed from GB913674A external-priority patent/GB1460113A/en
Priority to BE143879A priority patent/BE814507A/en
Publication of GB1455843A publication Critical patent/GB1455843A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B32B5/022—Non-woven fabric
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts
    • 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
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • 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
    • B32B2307/70—Other properties
    • B32B2307/728—Hydrophilic
    • 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
    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
    • 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
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/08—Dimensions, e.g. volume
    • B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
    • B32B2309/105—Thickness

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

1455843 Laminates SCAPA-PORRITT Ltd 24 April 1974 [31 Jan 1973] 4780/73 Heading B5N [Also in Division D1] A paper-makers felt comprises one endless belt formed from a body of non-woven fibrous material having a hydrophobic surface layer having a surface energy of less than 33 dynes/cm., and a backing layer which is thicker and of greater water take-up capacity than the surface layer. The hydrophobic layer may consist of intrinsically hydrophobic fibres (polytetrafluoroethylene, fluorinated ethylene-propylene copolymers, polypropylene or blends thereof or with non-hydrophobic fibres (wool, nylon or polyester). Hydrophobic character can alternatively or additionally be produced by the application of hydrophobic material to the fibres before formation of the layer or in the layer. A polysiloxane or fluorine containing polymer may be adhered to the fibres. Alternatively a chemical bond is effected between the fibre and the hydrophobic agent. Polyamide fibres may be treated with a solution of triphenylmethane triisocyanate or 2,4 or 2,6 tolylenediisocyanate followed by vinyl fluoride, pentadecafluorooctylacrylate or polydimethylsiloxane prepolymer. Fibres may be treated with pentadecafluorooctylacrylate, vinyl fluoride or polymethylsiloxane prepolymer in the presence of a free radical former such as t-butyl peroxide, dibenzoylperoxide, hydrogen peroxide, peracetic acid, persulphates and cerium salts or proceeded by treatment with ozone. Polyamide polyester or polyolefin fibres may be treated with difluorocarbene generated by in situ pyrolysis of sodium chlorodifluoroacetate or chlorodifluoroacetic acid. Silicone oil or a compound containing 1 to 4 fluoroalkyl groups attached to an organic radical may be added to the melted polypropylene to produce fibres having a surface energy of 26 dynes/cm. rather than 32 dynes/cm. In Example 1 the belt comprises a base layer woven from polyester and polyamide yarns, an intermediate layer formed by carding 6 cm. polyamide fibres and a surface layer formed by carding 6 cm. polypropylene fibres. The layers are laminated together by needling a solution of an air-curing polydimethylsiloxan is applied to the polypropylene surface by a lick roller. In Example 2 the polydimethylsiloxan is applied to the polypropylene fibres before they are carded. In Example 3 the surface layer consists of polyamide fibres treated with pentadecylfluorooctylacrylate and t-butyl peroxide. In Example 4 the intermediate layer comprises 60% polypropylene and 40% wool, the polypropylene fibres used to form the face and intermediate layers being treated with ozone and then with polydimethylsiloxane.
GB478073A 1973-01-31 1973-01-31 Paper makers wet felts Expired GB1455843A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB478073A GB1455843A (en) 1973-01-31 1973-01-31 Paper makers wet felts
BE143879A BE814507A (en) 1973-01-31 1974-05-03 Water-repellant fibrous felt for paper making machine - has surface under a controlled tension to remove excess water

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB478073A GB1455843A (en) 1973-01-31 1973-01-31 Paper makers wet felts
GB913674A GB1460113A (en) 1973-03-08 1974-02-28 Aerosol dispensing metal cans

Publications (1)

Publication Number Publication Date
GB1455843A true GB1455843A (en) 1976-11-17

Family

ID=26239370

Family Applications (1)

Application Number Title Priority Date Filing Date
GB478073A Expired GB1455843A (en) 1973-01-31 1973-01-31 Paper makers wet felts

Country Status (1)

Country Link
GB (1) GB1455843A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179294A (en) * 1983-05-31 1987-03-04 Albany Int Corp Wet press papermakers felt and method of fabrication
DE3741987A1 (en) * 1986-12-15 1988-06-16 Tamfelt Oy Ab TEXTILE AREA
GB2200867A (en) * 1987-01-21 1988-08-17 Tamfelt Oy Ab Papermakers felt leaving a smooth surface
EP0367738A2 (en) * 1988-10-31 1990-05-09 Albany International Corp. Fabrics having hydrophilic and hydrophobic coatings
EP0440076A2 (en) * 1990-01-31 1991-08-07 Thomas Josef Heimbach GmbH & Co. Press felt
WO1992010607A1 (en) * 1990-12-05 1992-06-25 Albany International Corp. Improvements in and relating to paper machine clothing
US5569358A (en) * 1994-06-01 1996-10-29 James River Corporation Of Virginia Imprinting felt and method of using the same
DE19820560A1 (en) * 1998-05-08 1999-11-11 Mgf Gutsche & Co Gmbh Betriebs Filter material of woven glass fibers
WO2004072368A1 (en) * 2003-02-12 2004-08-26 Huyck Austria Ges.M.B.H. Fabric belt

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179294A (en) * 1983-05-31 1987-03-04 Albany Int Corp Wet press papermakers felt and method of fabrication
US5006399A (en) * 1986-12-15 1991-04-09 Tamfelt Oy Ab Planar textile structure
DE3741987A1 (en) * 1986-12-15 1988-06-16 Tamfelt Oy Ab TEXTILE AREA
GB2198757A (en) * 1986-12-15 1988-06-22 Tamfelt Oy Ab Planar textile material
GB2198757B (en) * 1986-12-15 1991-02-13 Tamfelt Oy Ab Planar paper makers felt
GB2200867A (en) * 1987-01-21 1988-08-17 Tamfelt Oy Ab Papermakers felt leaving a smooth surface
GB2200867B (en) * 1987-01-21 1991-04-17 Tamfelt Oy Ab A process band
EP0367738A2 (en) * 1988-10-31 1990-05-09 Albany International Corp. Fabrics having hydrophilic and hydrophobic coatings
EP0367738A3 (en) * 1988-10-31 1991-03-06 Albany International Corp. Fabrics having hydrophilic and hydrophobic coatings
EP0440076A2 (en) * 1990-01-31 1991-08-07 Thomas Josef Heimbach GmbH & Co. Press felt
EP0440076A3 (en) * 1990-01-31 1991-10-16 Thomas Josef Heimbach Gmbh & Co. Press felt
WO1992010607A1 (en) * 1990-12-05 1992-06-25 Albany International Corp. Improvements in and relating to paper machine clothing
AU660632B2 (en) * 1990-12-05 1995-07-06 Albany International Corp. Improvements in and relating to paper machine clothing
US5569358A (en) * 1994-06-01 1996-10-29 James River Corporation Of Virginia Imprinting felt and method of using the same
US5591305A (en) * 1994-06-01 1997-01-07 The James River Corporation Of Virginia Imprinting felt and method of using the same
DE19820560A1 (en) * 1998-05-08 1999-11-11 Mgf Gutsche & Co Gmbh Betriebs Filter material of woven glass fibers
WO2004072368A1 (en) * 2003-02-12 2004-08-26 Huyck Austria Ges.M.B.H. Fabric belt

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee