WO1991014558A1 - Production de structures perforees - Google Patents

Production de structures perforees Download PDF

Info

Publication number
WO1991014558A1
WO1991014558A1 PCT/GB1991/000413 GB9100413W WO9114558A1 WO 1991014558 A1 WO1991014558 A1 WO 1991014558A1 GB 9100413 W GB9100413 W GB 9100413W WO 9114558 A1 WO9114558 A1 WO 9114558A1
Authority
WO
WIPO (PCT)
Prior art keywords
mask
radiation
resin material
source
support surface
Prior art date
Application number
PCT/GB1991/000413
Other languages
English (en)
Inventor
Ian Christison Sayers
James Thomas Guthrie
Gordon Glenn Alexander
Anthony Morton
Original Assignee
Scapa Group Plc
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 Group Plc filed Critical Scapa Group Plc
Publication of WO1991014558A1 publication Critical patent/WO1991014558A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/10—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation for articles of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0266—Local curing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
    • B29C41/28—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length by depositing flowable material on an endless belt
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0063—Perforated sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0045—Perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/733—Fourdrinier belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/737—Articles provided with holes, e.g. grids, sieves

Definitions

  • the invention concerns the production of perforate structures and has particular, though not exclusive, reference to flexible structures for use in the papermak- ing industry.
  • the fabric be of a predetermined and sensibly consistent permeability in order that uniformity of drainage/drying according to the particular stage of the papermaking process involved, might be achieved throughout the full areal extent of the paper sheet as it moves through the papermaking machine.
  • Conventionally papermakers fabrics include, for example, woven structures or structures defined by interdigitated helical coils to either of which structures there may be added one or more batts of textile fibres. Permeability of the fabric may be reduced by including stuffer yarns in the cross-machine direction of the fabric, be it a woven fabric or a link-belt defined by side-by-side coils, or, in the case of a link belt, by impregnating the same with a foam material or by including strips of an elongate material within some at least of the individual coils.
  • a method of producing a permeable fabric which comprises the steps of providing a layer of radiation curable polymeric resin material in fluid form, irradiating said layer of material through a mask selectively transparent to the radiation so as to effect at least partial curing of the material of the sheet in positions corresponding with transparent regions of the mask, removing uncured polymeric material and effecting any necessary full cure of the residual such material.
  • the invention also includes apparatus for use in producing the method aforesaid which comprises feed means for delivering fluid polymeric material, a support means to receive said material from the feed means, a source of radiation positioned to irradiate polymeric material present on the support means, the source of radiation being adapted to direct sensibly parallel radiation towards the support means, and a transparent mask intermediate the source of radiation and the support means and through which radiation passes to polymeric material positioned thereon, the mask being selectively transparent in accordance with opaque patterning applied thereto.
  • the support means is defined by a continuously moving band and the mask comprises an endless loop having a run arranged in spaced parallel disposition relative to the support surface and advanced at a like rate to the movement of the band.
  • the feed means comprises a curtains coater delivering • a continuous sheet of fluid polymeric material to the support surface.
  • Fig. 1 is a diagrammatic illustration of the successive steps in the method of the invention.
  • Fig. 2 is a diagrammatic view of apparatus for use in practising the invention.
  • a photopolymeric resin material 10 is applied to the surface of a moving conveyor belt 11, the viscosity of the resin being such as to form a layer 12 of uniform thickness thereon, and a selectively transparent mask 13 is brought into closely spaced relationship with respect to the upper surface of layer 12 for advancing movement therewith.
  • the band 12 includes transparent and opaque regions 14,
  • the layer ' 12 of resin material is subjected to illumination, through the mask 13, of a kind such as will effect at least a partial cure of that material in locations thereof in register with the transparent regions 14 of the mask, the illumination being in a direction normal to the surface of the mask.
  • the mask After illumination, the mask is moved away from the surface of the layer of photopolymeric material, and such material advances to be subjected to a localised jet of pressure air, as at 16, whereby uncured polymer is removed, thus creating apertures in the partially cured layer in positions corresponding to the opaque regions of the mask.
  • the apertured resin sheet is then subjected to further illumination so as fully to cure the resin, as at 17.
  • Apparatus suitable for practising the method is shown diagrammatically in Fig. 2 and will be seen to comprise a curtain coater 21 which supplies a layer 23 of a light- curable material of uniform thickness to the support surface 22 of an endless band 24, the support surface 22 having an easy release characteristic relative to the light-curable material and is typically of polytetrafluorethylene.
  • An endless mask 26 is positioned above the band 24, a lower run 27 of the mask being spaced from the support surface 22 by an amount sufficient to accommodate the material layer 23 present on the support surface 22 and to provide a small clearance between such material layer and the mask.
  • the mask 26 is driven at a like linear speed to that of the endless band 24, and the "laminate" of the lower run 27 of the mask 26, the material layer 23 and the support surface 22 of the endless band 24 move together.
  • Mask 26 is selectively transparent, in the sense that regions are provided thereon which are opaque to the radiation necessary to effect curing of the light-curable material, the regions, in the case under consideration, being circles of small diameter provided at close centres.
  • An elongated ultra violet light source 31 is provided within the loop of endless mask 26, the light source 31 further including a parabolic reflector 32 so positioned as to deliver parallel ultra voilet light to the mask in a direction perpendicular thereto.
  • the apparatus further includes pressure fluid means 33, preferably a compressed air jet, at a position downstream both of the mask 26 and the band 24, there being extractor means 34 arranged in register with the pressure fluid means 33 and at the opposite side of the layer 23 with respect thereto.
  • pressure fluid means 33 preferably a compressed air jet
  • An additional curing means 35 is included downstream of the pressure fluid means 33, the radiation supplied by said curing means being of a kind appropriate to effect curing of the photopolymeric material.
  • the apparatus is completed by a take-up roll 36 to receive fully cured apertured material.
  • the photopolymeric material used consisted of a blend of acrylated esters and/or urethanes and a photo initiator.
  • the aerylate moieties are the active centres in so far as curing is concerned and the initiator is based on acetophenone.
  • a 1 mm thick layer of the photopolymeric material was laid on the support surface and the . mask was so positioned that the lower - 6 -
  • the light source /which source was positioned 1 metre above the photopolymeric material, was such as to provide radiation of a dominant wavelength (Lambda max.) of 365 nm to give a partial core time of 30 sees.
  • the apertures in the mask were circular in form, each being 1 mm in diameter and being provided at 2 mm centres.
  • the thickness of the material layer and the geometry of the individual apertures and their disposition will be selected according to particular requirements, and that the cure, time will vary appreciably according to the intensity of the illumination and the spacing of the light source from the photopolymeric material.
  • the wavelengths of the ultra-violet light emitted by the source will extend over a range of between 250 to 400 am , although the initiator reacts to wavelengths within a narrow band of, say, 360 - 370 nm.
  • the light source will, of course, be selected having regard to the wave-lengths required to effect reaction of the initiator included in the photopolymeric material. It is to be appreciated that the method and apparatus as aforesaid will allow of the production, as a continuous process, of apertured sheet material in a simple and economic manner. The thickness of the sheet may be varied to suit particular requirements, - 7 -
  • yarns and/or fibres may be included in the mix applied to the support surface 22 of the endless band 24.
  • the facility for selective curing of the material applied to the support surface 22 of the endless band 24 which arises from the use of a mask provides for the production of apertured structures of a broad range of permeabilities and this merely by suitable selection of aperture size and spacing.
  • the method of the invention does make possible the creat- ion of a graded permeability towards the edges of the sheet merely by use of a mask of an appropriate form.
  • the form of reflector is intended to ensure that the light reaching the mask is parallel light, thereby to ensure accuracy in aperture form and size, although it is thought that, by judicious selection of the light source and reflector, apertures having cross-sectional dimensions which vary progressively in the thickness direction of the material may be possible.
  • the apertured structure as aforesaid whilst being intended primarily as a fabric for use in the papermaking and like industry, is thought to be of application in other contexts.
  • the apertured structure as aforesaid is of application as a papermakers' dryer fabric, and may be combined with a textile batt, as, for example, by applying a thin apertured structure in accordance with the invention to one or both faces of a textile batt, to form a papermakers wet felt.

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  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Toxicology (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

Procédé de production d'une feuille comportant des ouvertures selon lequel une couche (12) de résine (10) photopolymère est appliquée à une bande mobile (11), un masque (13) à ouvertures se déplaçant en synchronisation avec la surface de support est positionné pour recouvrir la résine et celle-ci est soumise à un rayonnement à travers le masque (13) pour en effectuer un traitement au moins partiel sur des zones en rapport avec les ouvertures (14) du masque (13). Après le traitement par rayonnement de la couche (12) de résine, la matière non traitée est enlevée au moyen de jets (16) de liquide sous pression et on effectue le traitement final de la résine. L'invention a également pour objet un appareil de mise en application du procédé. Ces feuilles à ouvertures s'utilisent pour produire des tissus destinés, entre autres, à l'industrie du papier.
PCT/GB1991/000413 1990-03-17 1991-03-18 Production de structures perforees WO1991014558A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9006077A GB2241915A (en) 1990-03-17 1990-03-17 Production of perforate structures.
GB9006077.3 1990-03-17

Publications (1)

Publication Number Publication Date
WO1991014558A1 true WO1991014558A1 (fr) 1991-10-03

Family

ID=10672814

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/000413 WO1991014558A1 (fr) 1990-03-17 1991-03-18 Production de structures perforees

Country Status (3)

Country Link
GB (1) GB2241915A (fr)
WO (1) WO1991014558A1 (fr)
ZA (1) ZA911987B (fr)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5334289A (en) * 1990-06-29 1994-08-02 The Procter & Gamble Company Papermaking belt and method of making the same using differential light transmission techniques
WO1996025547A1 (fr) * 1995-02-15 1996-08-22 The Procter & Gamble Company Procede pour appliquer une resine photosensible sur un support servant dans la fabrication du papier
US5549790A (en) * 1994-06-29 1996-08-27 The Procter & Gamble Company Multi-region paper structures having a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same
US5556509A (en) * 1994-06-29 1996-09-17 The Procter & Gamble Company Paper structures having at least three regions including a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same
US5580423A (en) * 1993-12-20 1996-12-03 The Procter & Gamble Company Wet pressed paper web and method of making the same
US5629052A (en) * 1995-02-15 1997-05-13 The Procter & Gamble Company Method of applying a curable resin to a substrate for use in papermaking
US5693187A (en) * 1996-04-30 1997-12-02 The Procter & Gamble Company High absorbance/low reflectance felts with a pattern layer
US5832362A (en) * 1997-02-13 1998-11-03 The Procter & Gamble Company Apparatus for generating parallel radiation for curing photosensitive resin
US5837103A (en) * 1994-06-29 1998-11-17 The Procter & Gamble Company Web patterning apparatus comprising a felt layer and a photosensitive resin layer
US5855739A (en) * 1993-12-20 1999-01-05 The Procter & Gamble Co. Pressed paper web and method of making the same
US5861082A (en) * 1993-12-20 1999-01-19 The Procter & Gamble Company Wet pressed paper web and method of making the same
US5871887A (en) * 1994-06-29 1999-02-16 The Procter & Gamble Company Web patterning apparatus comprising a felt layer and a photosensitive resin layer
US5962860A (en) * 1997-05-19 1999-10-05 The Procter & Gamble Company Apparatus for generating controlled radiation for curing photosensitive resin
US6017583A (en) * 1996-01-25 2000-01-25 Conrad Munzinger & Cie Ag Process for the production of a web of material
US6287641B1 (en) 1996-08-22 2001-09-11 The Procter & Gamble Company Method for applying a resin to a substrate for use in papermaking
US6420100B1 (en) 2000-10-24 2002-07-16 The Procter & Gamble Company Process for making deflection member using three-dimensional mask
US6576091B1 (en) 2000-10-24 2003-06-10 The Procter & Gamble Company Multi-layer deflection member and process for making same
US6576090B1 (en) 2000-10-24 2003-06-10 The Procter & Gamble Company Deflection member having suspended portions and process for making same
US6660129B1 (en) 2000-10-24 2003-12-09 The Procter & Gamble Company Fibrous structure having increased surface area
US6743571B1 (en) 2000-10-24 2004-06-01 The Procter & Gamble Company Mask for differential curing and process for making same
US7166195B2 (en) 2003-07-15 2007-01-23 Albany International Corp. Grooved and perforated layer for use in papermakers' fabric
US7799411B2 (en) 2006-10-31 2010-09-21 The Procter & Gamble Company Absorbent paper product having non-embossed surface features
US7914649B2 (en) 2006-10-31 2011-03-29 The Procter & Gamble Company Papermaking belt for making multi-elevation paper structures

Families Citing this family (7)

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EP0623440B1 (fr) * 1993-03-16 1997-09-10 Koninklijke Philips Electronics N.V. Procédé de et dispositif pour l'obtention d'un motif structuré avec une photoréserve réticulée sur la surface d'un substrat plat
GB9603575D0 (en) * 1996-02-20 1996-04-17 Scapa Group Plc Tobacco conveyor belt
FR2746519B1 (fr) * 1996-03-19 1998-06-12 Nouel Jean Marie Procede et dispositif industriels de preparation de plaques positives, destinees a l'impression offset, allegees ou pre-allegees
GB2329319A (en) * 1997-09-23 1999-03-24 Molins Plc Suction band for a cigarette making machine.
DE102004041077A1 (de) * 2004-08-25 2006-03-02 Voith Fabrics Patent Gmbh Verfahren zur Herstellung von bahnförmigen Gebilden
EP3221134A4 (fr) 2014-12-05 2018-08-22 Structured I, LLC Procédé de fabrication de courroies pour la fabrication du papier utilisant une technologie d'impression 3d
US11648703B2 (en) * 2020-07-01 2023-05-16 Xerox Corporation Vacuum belt deburring assembly

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Publication number Priority date Publication date Assignee Title
US4514345A (en) * 1983-08-23 1985-04-30 The Procter & Gamble Company Method of making a foraminous member
EP0234197A1 (fr) * 1986-01-10 1987-09-02 Scapa Group Plc Procédé pour réparer un dégât dans une toile pour machine à papier

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US4265986A (en) * 1979-11-21 1981-05-05 Uniroyal, Inc. Photopolymerizable composition containing chlorosulfonated polyethylene
US4752553A (en) * 1982-04-01 1988-06-21 M&T Chemicals Inc. High resolution solder mask photopolymers for screen coating over circuit traces
JPS59204036A (ja) * 1983-05-06 1984-11-19 Dainippon Ink & Chem Inc レジストパタ−ンの形成法
GB2176202B (en) * 1985-06-05 1989-07-26 Uniroyal Plastics Photosensitive elastomeric polymer composition for flexographic printing plate
GB2179360B (en) * 1985-08-12 1989-08-02 Uniroyal Plastics Aqueous developable photopolymeric compositions containing chlorosulfonated polyethylene

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4514345A (en) * 1983-08-23 1985-04-30 The Procter & Gamble Company Method of making a foraminous member
EP0234197A1 (fr) * 1986-01-10 1987-09-02 Scapa Group Plc Procédé pour réparer un dégât dans une toile pour machine à papier

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5514523A (en) * 1990-06-29 1996-05-07 The Procter & Gamble Company Papermaking belt and method of making the same using differential light transmission techniques
US5529664A (en) * 1990-06-29 1996-06-25 The Procter & Gamble Company Papermaking belt and method of making the same using differential light transmission techniques
US5554467A (en) * 1990-06-29 1996-09-10 The Proctor & Gamble Company Papermaking belt and method of making the same using differential light transmission techniques
US5624790A (en) * 1990-06-29 1997-04-29 The Procter & Gamble Company Papermaking belt and method of making the same using differential light transmission techniques
US5334289A (en) * 1990-06-29 1994-08-02 The Procter & Gamble Company Papermaking belt and method of making the same using differential light transmission techniques
US5637194A (en) * 1993-12-20 1997-06-10 The Procter & Gamble Company Wet pressed paper web and method of making the same
US5904811A (en) * 1993-12-20 1999-05-18 The Procter & Gamble Company Wet pressed paper web and method of making the same
US5861082A (en) * 1993-12-20 1999-01-19 The Procter & Gamble Company Wet pressed paper web and method of making the same
US5855739A (en) * 1993-12-20 1999-01-05 The Procter & Gamble Co. Pressed paper web and method of making the same
US5580423A (en) * 1993-12-20 1996-12-03 The Procter & Gamble Company Wet pressed paper web and method of making the same
US5846379A (en) * 1993-12-20 1998-12-08 The Procter & Gamble Company Wet pressed paper web and method of making the same
US5837103A (en) * 1994-06-29 1998-11-17 The Procter & Gamble Company Web patterning apparatus comprising a felt layer and a photosensitive resin layer
US5549790A (en) * 1994-06-29 1996-08-27 The Procter & Gamble Company Multi-region paper structures having a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same
US5871887A (en) * 1994-06-29 1999-02-16 The Procter & Gamble Company Web patterning apparatus comprising a felt layer and a photosensitive resin layer
US5709775A (en) * 1994-06-29 1998-01-20 The Procter & Gamble Company Paper structures having at least three regions including a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same
US5776312A (en) * 1994-06-29 1998-07-07 The Procter & Gamble Company Paper structures having at least three regions including a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same
US5556509A (en) * 1994-06-29 1996-09-17 The Procter & Gamble Company Paper structures having at least three regions including a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same
US5609725A (en) * 1994-06-29 1997-03-11 The Procter & Gamble Company Multi-region paper structures having a transition region interconnecting relatively thinner regions disposed at different elevations, and apparatus and process for making the same
US5629052A (en) * 1995-02-15 1997-05-13 The Procter & Gamble Company Method of applying a curable resin to a substrate for use in papermaking
US5817377A (en) * 1995-02-15 1998-10-06 The Procter & Gamble Company Method of applying a curable resin to a substrate for use in papermaking
WO1996025547A1 (fr) * 1995-02-15 1996-08-22 The Procter & Gamble Company Procede pour appliquer une resine photosensible sur un support servant dans la fabrication du papier
US5674663A (en) * 1995-02-15 1997-10-07 Mcfarland; James Robert Method of applying a photosensitive resin to a substrate for use in papermaking
US6017583A (en) * 1996-01-25 2000-01-25 Conrad Munzinger & Cie Ag Process for the production of a web of material
US5693187A (en) * 1996-04-30 1997-12-02 The Procter & Gamble Company High absorbance/low reflectance felts with a pattern layer
US6287641B1 (en) 1996-08-22 2001-09-11 The Procter & Gamble Company Method for applying a resin to a substrate for use in papermaking
US5832362A (en) * 1997-02-13 1998-11-03 The Procter & Gamble Company Apparatus for generating parallel radiation for curing photosensitive resin
US5962860A (en) * 1997-05-19 1999-10-05 The Procter & Gamble Company Apparatus for generating controlled radiation for curing photosensitive resin
US6271532B1 (en) 1997-05-19 2001-08-07 The Procter & Gamble Company Apparatus for generating controlled radiation for curing photosensitive resin
US6420100B1 (en) 2000-10-24 2002-07-16 The Procter & Gamble Company Process for making deflection member using three-dimensional mask
US6576091B1 (en) 2000-10-24 2003-06-10 The Procter & Gamble Company Multi-layer deflection member and process for making same
US6576090B1 (en) 2000-10-24 2003-06-10 The Procter & Gamble Company Deflection member having suspended portions and process for making same
US6660129B1 (en) 2000-10-24 2003-12-09 The Procter & Gamble Company Fibrous structure having increased surface area
US6743571B1 (en) 2000-10-24 2004-06-01 The Procter & Gamble Company Mask for differential curing and process for making same
US6913859B2 (en) 2000-10-24 2005-07-05 The Proctor & Gamble Company Mask for differential curing and process for making same
US7118647B2 (en) 2000-10-24 2006-10-10 The Procter & Gamble Company Process for producing a fibrous structure having increased surface area
US7166195B2 (en) 2003-07-15 2007-01-23 Albany International Corp. Grooved and perforated layer for use in papermakers' fabric
US7799411B2 (en) 2006-10-31 2010-09-21 The Procter & Gamble Company Absorbent paper product having non-embossed surface features
US7914649B2 (en) 2006-10-31 2011-03-29 The Procter & Gamble Company Papermaking belt for making multi-elevation paper structures
US8202605B2 (en) 2006-10-31 2012-06-19 The Procter & Gamble Company Absorbent paper product having non-embossed surface features

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GB2241915A (en) 1991-09-18
GB9006077D0 (en) 1990-05-16
ZA911987B (en) 1991-12-24

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