WO2013057018A1 - Screen cloth - Google Patents

Screen cloth Download PDF

Info

Publication number
WO2013057018A1
WO2013057018A1 PCT/EP2012/070015 EP2012070015W WO2013057018A1 WO 2013057018 A1 WO2013057018 A1 WO 2013057018A1 EP 2012070015 W EP2012070015 W EP 2012070015W WO 2013057018 A1 WO2013057018 A1 WO 2013057018A1
Authority
WO
WIPO (PCT)
Prior art keywords
screen cloth
web
support layer
cloth
cloth according
Prior art date
Application number
PCT/EP2012/070015
Other languages
French (fr)
Inventor
Elmar SIEPMANN
Original Assignee
Chemische Fabrik Gmbh
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 Chemische Fabrik Gmbh filed Critical Chemische Fabrik Gmbh
Publication of WO2013057018A1 publication Critical patent/WO2013057018A1/en

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • 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
    • D04H1/58—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • 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
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
    • 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
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/06—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
    • 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
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/02—Synthetic macromolecular fibres
    • D06N2201/0245—Acrylic resin fibres
    • 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
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/02—Synthetic macromolecular fibres
    • D06N2201/0263—Polyamide fibres

Definitions

  • the invention relates to a screen cloth, in particular for projection screens, comprising a support layer made of fibrous web, and a coating applied to at least one side of the support layer.
  • Screen cloth serve for example as projection surfaces for movie shows and slide shows and also as projection surfaces for digital image projection apparatus (beamers) for the display of TV transmissions or computer generated presentations.
  • screen cloth of the type indicated above have been used which have relatively small formats, e.g. up to about to 4 m, and wherein the support layer consists of a non-woven glass fibre mat.
  • the support layer heretofore consists of a woven fabric of cotton or polyester fibre.
  • woven fabrics may be subject to internal strains that may cause the cloth to become distorted or wavy, in particular when it is coated, so that the behaviour of the cloth when it is suspended and/or spread flat is not satisfactory.
  • the fibrous web is a web of synthetic fibre.
  • non-woven webs of synthetic fibres have a substantially increased tear resistance, and compared to woven fabrics, they have substantially improved suspension and flat spreading characteristics, because there are no differences between the thread direction and the warp direction.
  • a high elasticity and a high shape restoration capacity and break-proofness may be achieved by a suitable selection of the synthetic fibres.
  • webs of synthetic fibres are hardly inflammable and can easily be dyed.
  • the synthetic fibre webs have only a low weight per surface area, e.g. 10 to 200 g/m 2 , pre- ferably 30 to 150 g/m 2 . For these reasons, they are particularly useful as support layer for a large format projection screen cloth with a width of 5 m or more.
  • Suitable synthetic fibres for the none -woven web comprise for example fibres made of polyester, polyamide or polyacrylics.
  • the width of the screen cloth may for example amount to 5.2 m or 6 m or more.
  • Fig. 1 is a view of a projection screen
  • Fig. 2 is a schematic cross section of a screen cloth
  • Fig. 3 shows an enlarged detail of a non-woven web that forms a support layer of the screen cloth.
  • Fig. 1 shows a projection screen having a cloth 10 that is wound on a winder 12 and adapted to be drawn-out downwardly so as to be suspended from the winder.
  • the cloth 10 has a width of 5.2 m, for example.
  • the cloth 10 has a support layer 14 that is made of a non- woven web of synthetic fibres and has, for example, a thickness in the order of magnitude of about 1 mm.
  • the cloth On the front side (that is visible in Fig. 1) the cloth is preferably coated with a white, light scattering coating 16.
  • a coating 18 is also ap- plied to the back side of the support layer 14.
  • Fig. 3 shows an enlarged detail of the surface of a non-woven web 20 that forms the support layer 14, shown together with a ruler 22 for illustrating the dimensions.
  • Fig. 3 gives an impression of the posture and distribution of the synthetic fibres in the web 20.
  • the web 14 is provided in the desired width, i.e.
  • the coating 16 is formed by spreading a paste, that is based on PVC and includes softeners and chalk as filler material and Ti0 2 as white pigment, on the fibrous web by means of a doctor blade.
  • the coating 18 on the back side can be formed in a similar way.
  • the fibrous web 20 gives the cloth 10 a high tear resistance and an excellent elastic shape restoration behaviour which assure that the cloth 10, when drawn out from the winder 12, provides a flat projection surface that has no waves or warps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Woven Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

A screen cloth having a support layer (14) made of a fibrous web, and a coating (16, 18) applied at least one side of the support layer (14), characterized in that the fibrous web is a non- woven web of synthetic fibres.

Description

SCREEN CLOTH
The invention relates to a screen cloth, in particular for projection screens, comprising a support layer made of fibrous web, and a coating applied to at least one side of the support layer.
Screen cloth serve for example as projection surfaces for movie shows and slide shows and also as projection surfaces for digital image projection apparatus (beamers) for the display of TV transmissions or computer generated presentations.
In practice, screen cloth of the type indicated above have been used which have relatively small formats, e.g. up to about to 4 m, and wherein the support layer consists of a non-woven glass fibre mat.
Since electronic flat screens are increasingly used for presentations with smaller image formats, the focus in the field of projection screens shifts to larger formats. In projection screen cloths for large formats, the support layer heretofore consists of a woven fabric of cotton or polyester fibre.
However, due to a certain anisotropy between the thread and the warp direction, woven fabrics may be subject to internal strains that may cause the cloth to become distorted or wavy, in particular when it is coated, so that the behaviour of the cloth when it is suspended and/or spread flat is not satisfactory.
It is an object of the invention to provide a screen cloth with improved tear resistance and improved suspension and flat spreading characteristics.
In order to achieve this object, according to the invention, the fibrous web is a web of synthetic fibre.
Compared to non-woven glass fibre, non-woven webs of synthetic fibres have a substantially increased tear resistance, and compared to woven fabrics, they have substantially improved suspension and flat spreading characteristics, because there are no differences between the thread direction and the warp direction. As additional advantages, a high elasticity and a high shape restoration capacity and break-proofness may be achieved by a suitable selection of the synthetic fibres. Moreover, webs of synthetic fibres are hardly inflammable and can easily be dyed. For a given tear-resistance, the synthetic fibre webs have only a low weight per surface area, e.g. 10 to 200 g/m2, pre- ferably 30 to 150 g/m2. For these reasons, they are particularly useful as support layer for a large format projection screen cloth with a width of 5 m or more.
Useful embodiments of the invention are indicated in the dependent claims.
Suitable synthetic fibres for the none -woven web comprise for example fibres made of polyester, polyamide or polyacrylics.
The width of the screen cloth may for example amount to 5.2 m or 6 m or more.
An embodiment example will now be explained in conjunction with the drawings, wherein:
Fig. 1 is a view of a projection screen;
Fig. 2 is a schematic cross section of a screen cloth; and
Fig. 3 shows an enlarged detail of a non-woven web that forms a support layer of the screen cloth.
As an example for a way of using the cloth according to the invention, Fig. 1 shows a projection screen having a cloth 10 that is wound on a winder 12 and adapted to be drawn-out downwardly so as to be suspended from the winder. The cloth 10 has a width of 5.2 m, for example.
As is shown in Fig. 2, the cloth 10 has a support layer 14 that is made of a non- woven web of synthetic fibres and has, for example, a thickness in the order of magnitude of about 1 mm. On the front side (that is visible in Fig. 1) the cloth is preferably coated with a white, light scattering coating 16. In the example shown, a coating 18 is also ap- plied to the back side of the support layer 14. Fig. 3 shows an enlarged detail of the surface of a non-woven web 20 that forms the support layer 14, shown together with a ruler 22 for illustrating the dimensions. Thus, Fig. 3 gives an impression of the posture and distribution of the synthetic fibres in the web 20. For manufacturing the cloth 10, the web 14 is provided in the desired width, i.e. 5.2 m in this example, and is coated with the coatings 16, 18 in a doctor or knife coating process. As is known per-se, the coating 16 is formed by spreading a paste, that is based on PVC and includes softeners and chalk as filler material and Ti02 as white pigment, on the fibrous web by means of a doctor blade. The coating 18 on the back side can be formed in a similar way.
The fibrous web 20 gives the cloth 10 a high tear resistance and an excellent elastic shape restoration behaviour which assure that the cloth 10, when drawn out from the winder 12, provides a flat projection surface that has no waves or warps.

Claims

1. A screen cloth having a support layer (14) made of a fibrous web (20), and a coating (16, 18) applied to at least one side of the support layer (14), characterized in
5 that the fibrous web (20) is a non- woven web of synthetic fibres.
2. The screen cloth according to claim 1, wherein the web (20) includes polyester fibres.
3. The screen cloth according to claim 1 or 2, wherein the web (20) includes poly- amide fibres.
4. The screen cloth according to any of the preceding claims, wherein the web (20) includes polyacrylic fibres.
5. The screen cloth according to any of the preceding claims, having a width of 4.5 m or more, preferably 5.2 m or more.
6. The screen cloth according to any of the preceding claims, wherein the support layer (14) has a weight per surface area between 30 and 150 g/m2.
7. A projection screen comprising a winder (12) adapted to be mounted on a wall, and a cloth (10) wound on the winder and adapted to be drawn out vertically so as to be suspended from the winder (12), characterized in that the cloth (10) is a cloth according to any of the claims 1 to 6. ~ 0
PCT/EP2012/070015 2011-10-21 2012-10-10 Screen cloth WO2013057018A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201120051722 DE202011051722U1 (en) 2011-10-21 2011-10-21 Screen surface
DE202011051722.5 2011-10-21

Publications (1)

Publication Number Publication Date
WO2013057018A1 true WO2013057018A1 (en) 2013-04-25

Family

ID=47040704

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/070015 WO2013057018A1 (en) 2011-10-21 2012-10-10 Screen cloth

Country Status (2)

Country Link
DE (1) DE202011051722U1 (en)
WO (1) WO2013057018A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1063252A (en) * 1962-07-06 1967-03-30 Du Pont Improvements relating to textile materials
DE2037527A1 (en) * 1970-07-29 1972-02-03 Hendrix, Dr. Hans, 5600 Wuppertal-Barmen Flexible magnet holder panel - made of steel felt coated on both sides with plasticized pvc
JPH06230474A (en) * 1993-01-29 1994-08-19 Kyodo Printing Co Ltd Reflection type projection screen
US20060187544A1 (en) * 2005-02-23 2006-08-24 David Wiener Flexible screen for front and rear projection
US20080291537A1 (en) * 2007-05-22 2008-11-27 Hae-Yong Choi Floor projection screen and method for manufacturing the same
KR20090059098A (en) * 2009-05-21 2009-06-10 조희철 Video advertising method using glass-window
US20100053748A1 (en) * 2006-10-11 2010-03-04 Sefar Ag Rear projection fabric, rear projection screen, and rear projection system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3563838A (en) * 1968-07-09 1971-02-16 Du Pont Continuous filament nonwoven web
US5361164A (en) * 1992-06-17 1994-11-01 Walltalkers Projection markerboard
DE10251778A1 (en) * 2002-11-05 2004-05-19 Röhm GmbH & Co. KG Back projection screen including a light scattering polymethyl methacrylate layer containing spherical particles of particle size 5-35 micron gives high quality projected images with uniform brightness distribution
DE102006051415A1 (en) * 2006-10-27 2008-04-30 Basf Ag Substrate treatment for e.g. printing, dyeing or coating leather, polymer film or textile uses aqueous ethylene-(meth)acrylic acid copolymer binder formulation containing carbodiimide and diol, triol or polyol or their reaction product

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1063252A (en) * 1962-07-06 1967-03-30 Du Pont Improvements relating to textile materials
DE2037527A1 (en) * 1970-07-29 1972-02-03 Hendrix, Dr. Hans, 5600 Wuppertal-Barmen Flexible magnet holder panel - made of steel felt coated on both sides with plasticized pvc
JPH06230474A (en) * 1993-01-29 1994-08-19 Kyodo Printing Co Ltd Reflection type projection screen
US20060187544A1 (en) * 2005-02-23 2006-08-24 David Wiener Flexible screen for front and rear projection
US20100053748A1 (en) * 2006-10-11 2010-03-04 Sefar Ag Rear projection fabric, rear projection screen, and rear projection system
US20080291537A1 (en) * 2007-05-22 2008-11-27 Hae-Yong Choi Floor projection screen and method for manufacturing the same
KR20090059098A (en) * 2009-05-21 2009-06-10 조희철 Video advertising method using glass-window

Also Published As

Publication number Publication date
DE202011051722U1 (en) 2013-01-22

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