WO1989003971A1 - A camouflage covering - Google Patents
A camouflage covering Download PDFInfo
- Publication number
- WO1989003971A1 WO1989003971A1 PCT/SE1988/000577 SE8800577W WO8903971A1 WO 1989003971 A1 WO1989003971 A1 WO 1989003971A1 SE 8800577 W SE8800577 W SE 8800577W WO 8903971 A1 WO8903971 A1 WO 8903971A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fibers
- camouflage
- covering
- layer
- camouflage covering
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H3/00—Camouflage, i.e. means or methods for concealment or disguise
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/919—Camouflaged article
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/23907—Pile or nap type surface or component
- Y10T428/2395—Nap type surface
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/23907—Pile or nap type surface or component
- Y10T428/23979—Particular backing structure or composition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/654—Including a free metal or alloy constituent
- Y10T442/656—Preformed metallic film or foil or sheet [film or foil or sheet had structural integrity prior to association with the nonwoven fabric]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/659—Including an additional nonwoven fabric
- Y10T442/666—Mechanically interengaged by needling or impingement of fluid [e.g., gas or liquid stream, etc.]
- Y10T442/667—Needled
Definitions
- the two layers were then laid together, with the Dilo-needling pile outward and the said bottom layer opposite thereto.
- the two layers were needled from the underside, whereby the needles were not permitted to pierce so far that their barb points could reach into the brushy Dilo-pile layer.
Abstract
A camouflage covering intended for affixing to military objects, particularly heated surfaces of tanks. It consists of layers held together by means of needling and comprises a super-absorbent fibers, so that it can be kept cool by evaporating water previously applied. By including fibers, it may have radar camouflage properties. A substantial pile obtained by needling will give a non-reflecting surface.
Description
A Camouflage Covering
The invention regards a camouflage covering which is intended for fixing on surfaces which are likely to be heated and therefore detectable by infrared reconnais¬ sance. A particular use is for covering some or all surfaces of tanks.
It is known from US-A-4 659 602 to apply mats of carpet type for this purpose. According to W087/03082, it is also known to include in such a mat some yarn strands or natural wool, which will take up rain water or other applied moisture, which with atmospheric evaporation will give a lowered temperature signature.
It is an object of the present invention to obtain a camouflage covering having a carpet structure, and including good camouflage properties in the visible, and against radar reconnaissance, which combines particularly good IR camouflage properties and a non-prohibitive price.
According to the invention, such a mat-like camouflage covering is obtained by means of a judicious choice of layers which are bound together by means of appropriate needling methods, which are known per se in the carpet- ing industry.
For the purpose of explaining this invention, it may therefore be sufficient to remind that ordinary need¬ ling is made by sticking through a web of collected fibers with sets of needles, which on the other side pass through holes in a counterplate. Dilo needling is made by letting the needles pass through the web and end up in a brush.
According to the invention, a mat-like structure having the desired properties is obtained by needling together several webs of different materials, one of which comprises a so-called super-absorbent material. There exist several such materials, some of which have a very poor structure when wet, e.g. metoxycellulose. It is therefore preferred, to use some such material which has better structural properties when wet, e.g. an acrylic-based fiber-like Lanseal, mixed with some fibers which further improve the structure, like rayon and/or polypropene.
It is advantageous to include in the structure some fibers which are hydrophilic, as this will improve evaporation from the layer comprising super-absorbent material. It is also advantageous to comprise in all the webs, or at least some, electrically conducting fibers, as this will give a good radar absorption property. The fact that the radar absorbency is distributed in a three-dimensional structure improves substantially the radar camouflage effect.
For obtaining a good visual camouflage effect, it is a particularly advantageous feature that the outermost pile of the camouflage covering is a Dilo-made pile, which substantially diminishes light reflexion properties.
In order to obtain a long-term effect of a wetted camouflage, it is advantageous to include near the bottom a reflecting layer comprising an aluminum foil or an aluminized web of plastic material. This will also improve the radar camouflage properties. Another advantageous feature is to add a bottom layer comprising much air, such as a net or a canal structure, which will give thermal insulation and/or
a possibility of heat transport by convection traverse to the covering when situated vertically or near vertical.
The camouflage covering having the form of a web with a certain stiffness will have to be tailored in order to mount it, e.g. by means of adhesive. In order to cover e.g. surfaces with a double curvature, it may be partially cut up checker-wise, admitting a substantial conforming. It may also be affixed to a waffled web on the backside, in order to obtain thermal insulation.
The invention will be further understood by reference to an exemplary embodiment, the manufacture of which is visualized schematically in the Figure.
The Figure shows the various steps of manufacture of a camouflage covering according to the invention, by combining webs, most of them made from fibers in non- woven state. The making of webs of simply laid out fiber layers has been symbolized by simple hoppers, as the man of the art familiar with the manufacture of needle-felt and related textile structures will know how to make such layers. The Figure is also simplified in that several steps are shown as being performed at once, although naturally, in practice, there will be steps of storing on rolls between the various steps shown in the Figure.
As shown in the Figure, there is made a bottom portion 1 and a top portion 2, which are then laid together and fixed in order to obtain the final product 3-
To start the description with the bottom portion, a strength layer is made by needling together from two sides at 5 of a layer of fibers. An aluminized plastic
film 7 is laid on top from a roll 6, and a layer 8 comprising super-absorbent fibers is laid on top of the aluminized plastic film. The layers are then made to keep together by a slight needling operation at 9.
The top portion is obtained by laying two layers 10 and 11 of fibers one on top of the other. Those two layers are bound together by means of a Dilo needling device 12, in order to obtain the top portion web 2, having a typical pile structure reminding of pig's bristle.
The two composite webs 1 and 2 are then laid together and needled together from the underside with compara- tively few needle stitches and broad needles, which are not permitted to pass into the "pig's bristle", which will thus retain its substantial surface structure. Finally, at 14, the composed product is drawn through a blowing oven, blowing hot air through the structure, which will at least partly melt some of the fibers having an inferior melting-point, such that an improved mechanical resistance is obtained.
EXAMPLE
A camouflage covering was manufactured, which had a total weight of about 1200 g/m .
1. A bottom layer was made by ordinary needling of a web of polyester fibers, about 300 g/m .
2
2. A layer of Mylar film, 20 g/m , covered on both sides with an aluminum layer, was laid on top of the bottom layer.
3. A web of super absorbent fibers of the acrylic-based type (Lanseal), 255. by weight, rayon fibers 20 by weight and polypropene fibers 55!- by weight, was laid on top of the Mylar film. This sandwich was needled weakly from both sides, in order to obtain a reasonably consistent web.
4. A further web was made from two fiber layers, a top layer of "nature-colored" (green) polypropylene fibers and some 10 by weight of binding fibers K 140
_-*
(polyamide), 3% by weight of metal fibers, in total
2 150 g/m , and a bottom layer comprising more binding fibers K 140 (30 by weight). The two layers were needled together by Dilo needling from the underside, in order to obtain a consistent web having a good pile on the top side. The total weight of that combined web
2 was 300 g/m .
5. The two layers were then laid together, with the Dilo-needling pile outward and the said bottom layer opposite thereto. The two layers were needled from the underside, whereby the needles were not permitted to pierce so far that their barb points could reach into the brushy Dilo-pile layer.
6. Finally, the composed covering was blown through in an oven with air at 145°C, thus obtaining good binding in the surface layer and good mechanical resistance.
In order to obtain the full advantages of a camouflage covering according to the invention, it should be wetted at intervals by sprinkling with water. It has been shown that this covering takes up water easily and will then keep a cool surface for a substantial period of time, and will in fact keep a surface
temperature nearing the dew-point, being able to dissipate considerable heat by evaporation.
It is possible to include visual camouflage by varying the color in the surface layer, e.g. by laying pieces of black webs between the two layers which form the surface portion.
It is noted that, although the man of the art can analyze the various layers in a manufactured camouflage according to the invention, the needling will mix the layers such that they no longer present any clear inner delimitations.
Claims
1. A camouflage covering for covering military equipment, characterized in that it comprises several layers of fiber webs, including a layer (8) which comprises fibers of a super-absorbent matter, that the said layers are needled together and that an outer surface thereof has a substantial pile structure.
2. A camouflage covering according to Claim 1, characterized in that the substantial pile structure is a pig's bristle Dilo-needling pile.
3. A camouflage covering according to Claim 1 or Claim 2, characterized in that there are included, as counted from a bottom side and to said outer surface, a strength layer (4), an aluminized plastic film (7), a layer (8) comprising said super-absorbent matter, and a surface layer (10,11) presenting the said substantial pile structure.
4. A camouflage covering according to Claim 1, characterized in that the fibers include both hydrophilic fibers and hydrophobia fibers.
5. A camouflage covering according to Claim 4, characterized in that the said hydrophilic fibers comprise rayon fibers.
6. A camouflage covering according to Claim 1, characterized in that the fibers comprise electrically conducting fibers.
7. A camouflage covering according to Claim 1, characterized in that some but not all fibers have lower melting-point than other fibers included in the covering and that at least some of said lower melting- point fibers are heat-deformed and participate in holding together the covering by their permanently deformed forms.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88909632T ATE89402T1 (en) | 1987-10-28 | 1988-10-27 | CAMOUFLAGE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8704197A SE8704197D0 (en) | 1987-10-28 | 1987-10-28 | MATERIAL |
SE8704197-6 | 1987-10-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1989003971A1 true WO1989003971A1 (en) | 1989-05-05 |
Family
ID=20370037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1988/000577 WO1989003971A1 (en) | 1987-10-28 | 1988-10-27 | A camouflage covering |
Country Status (10)
Country | Link |
---|---|
US (1) | US5153045A (en) |
EP (1) | EP0378582B1 (en) |
JP (1) | JPH03502129A (en) |
AT (1) | ATE89402T1 (en) |
AU (1) | AU629188B2 (en) |
CA (1) | CA1312460C (en) |
DE (1) | DE3881054T2 (en) |
NZ (1) | NZ226777A (en) |
SE (1) | SE8704197D0 (en) |
WO (1) | WO1989003971A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0633447A1 (en) * | 1993-07-09 | 1995-01-11 | ETAT FRANCAIS Représenté par le Délégué Général pour l'Armement | Camouflage device |
GB2295665A (en) * | 1994-11-29 | 1996-06-05 | Secr Defence | Infra-red body |
EP2014814A1 (en) * | 2007-07-10 | 2009-01-14 | VERMOP Salmon GmbH | Floor mat made from fluid-absorbing non-woven material |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE469444B (en) * | 1989-11-06 | 1993-07-05 | Diab Barracuda Ab | THE MASKING MACHINE WAS TAKEN AND SET FOR ITS MANUFACTURING |
DE19524958C1 (en) * | 1995-07-08 | 1996-08-22 | Daimler Benz Aerospace Ag | Camouflage device comprising durable and rip-proof bearer sheet with adhered camouflage sheet |
US5976643A (en) * | 1996-11-06 | 1999-11-02 | Marconi Aerospace Defense Systems, Inc. | Low thermal signature camouflage garnish |
CA2208872A1 (en) * | 1997-06-13 | 1998-12-13 | Texel Inc. | Wind-resistant tarpaulin |
US6794317B2 (en) * | 2000-04-26 | 2004-09-21 | Creare Inc. | Protective cover system including a corrosion inhibitor |
US6444595B1 (en) * | 2000-04-26 | 2002-09-03 | Creare Inc. | Flexible corrosion-inhibiting cover for a metallic object |
DE102007062848B3 (en) * | 2007-12-21 | 2009-05-20 | Bundesrepublik Deutschland, vertreten durch das Bundesministerium der Verteidigung, dieses vertreten durch den Präsidenten des Bundesamtes für Wehrtechnik und Beschaffung | Tarn material has laminar carrier material, at which fibers are arranged, where fibers are adjusted outward like hair of the skin, and exterior surface of free ends of fibers is formed in hydrophilic manner |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2202127B2 (en) * | 1972-01-18 | 1976-03-25 | Oskar DiIo Maschinenfabrik, KG, 6930 Eberbach | DEVICE FOR MANUFACTURING NON-WOVEN TEXTILE FABRICS WITHOUT CARRIER MATERIAL WITH FELT-LIKE AND PATTERNED SURFACE STRUCTURE |
US4107361A (en) * | 1975-01-30 | 1978-08-15 | Chevron Research Company | Needle-punched grass-like carpets |
US4287243A (en) * | 1978-07-28 | 1981-09-01 | Gottlieb Commercial Company A/S | Mat for multispectral camouflage of objects and permanent constructions |
GB2078799A (en) * | 1980-06-24 | 1982-01-13 | Cagnoni Cesare | A process for automatically according joining together a sheet of material and a net and product so obtained |
US4389434A (en) * | 1982-02-12 | 1983-06-21 | Chevron Research Company | Permeable grass-like sport surface with fused glass membrane |
EP0114154A2 (en) * | 1983-01-14 | 1984-07-25 | Diab-Barracuda Ab | Thermal camouflage |
EP0123660A1 (en) * | 1983-03-25 | 1984-10-31 | Diab-Barracuda Ab | Thermal and optical camouflage |
EP0198283A2 (en) * | 1985-04-01 | 1986-10-22 | Pusch, Klaus-Werner | Broad band camouflage screen having a frequency dependent radar attenuation |
US4659602A (en) * | 1985-11-12 | 1987-04-21 | Jorgen Birch | Broad spectrum camouflage mat |
WO1987003082A1 (en) * | 1985-11-12 | 1987-05-21 | Jorgen Birch | Broad spectrum camouflage mat and screen |
US4676649A (en) * | 1985-11-27 | 1987-06-30 | Compact Spindle Bearing Corp. | Multi-axis gas bearing stage assembly |
WO1988001363A1 (en) * | 1986-08-21 | 1988-02-25 | Hb Radicool Research & Development | Web material for camouflage against electromagnetic radiation |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE656472A (en) * | 1963-11-29 | 1900-01-01 | ||
DE2219817C3 (en) * | 1972-01-14 | 1978-06-29 | Fa. Carl Freudenberg, 6940 Weinheim | Process for the production of a needle felt floor covering material with a pile-like surface |
US3935046A (en) * | 1972-11-06 | 1976-01-27 | Imperial Chemical Industries Limited | Non-woven fabrics |
US4096302A (en) * | 1976-09-02 | 1978-06-20 | Conwed Corporation | Backing for tufted carpet of a thermoplastic net and plurality of fibers |
US4199635A (en) * | 1979-04-20 | 1980-04-22 | Albany International Corp. | Fabric faced laminate panel and method of manufacture |
US4622253A (en) * | 1984-10-12 | 1986-11-11 | Harry Levy | Thermal laminated lining and method of manufacture |
US4818586A (en) * | 1986-01-21 | 1989-04-04 | Gates Formed-Fibre Products, Inc. | Preferentially needled textile panel and method |
-
1987
- 1987-10-28 SE SE8704197A patent/SE8704197D0/en unknown
-
1988
- 1988-10-27 DE DE88909632T patent/DE3881054T2/en not_active Expired - Fee Related
- 1988-10-27 CA CA000581414A patent/CA1312460C/en not_active Expired - Fee Related
- 1988-10-27 US US07/473,989 patent/US5153045A/en not_active Expired - Fee Related
- 1988-10-27 AT AT88909632T patent/ATE89402T1/en not_active IP Right Cessation
- 1988-10-27 EP EP19880909632 patent/EP0378582B1/en not_active Expired - Lifetime
- 1988-10-27 JP JP63508895A patent/JPH03502129A/en active Pending
- 1988-10-27 AU AU26245/88A patent/AU629188B2/en not_active Ceased
- 1988-10-27 WO PCT/SE1988/000577 patent/WO1989003971A1/en active IP Right Grant
- 1988-10-28 NZ NZ226777A patent/NZ226777A/en unknown
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2202127B2 (en) * | 1972-01-18 | 1976-03-25 | Oskar DiIo Maschinenfabrik, KG, 6930 Eberbach | DEVICE FOR MANUFACTURING NON-WOVEN TEXTILE FABRICS WITHOUT CARRIER MATERIAL WITH FELT-LIKE AND PATTERNED SURFACE STRUCTURE |
US4107361A (en) * | 1975-01-30 | 1978-08-15 | Chevron Research Company | Needle-punched grass-like carpets |
US4287243A (en) * | 1978-07-28 | 1981-09-01 | Gottlieb Commercial Company A/S | Mat for multispectral camouflage of objects and permanent constructions |
GB2078799A (en) * | 1980-06-24 | 1982-01-13 | Cagnoni Cesare | A process for automatically according joining together a sheet of material and a net and product so obtained |
US4389434A (en) * | 1982-02-12 | 1983-06-21 | Chevron Research Company | Permeable grass-like sport surface with fused glass membrane |
EP0114154A2 (en) * | 1983-01-14 | 1984-07-25 | Diab-Barracuda Ab | Thermal camouflage |
EP0123660A1 (en) * | 1983-03-25 | 1984-10-31 | Diab-Barracuda Ab | Thermal and optical camouflage |
EP0198283A2 (en) * | 1985-04-01 | 1986-10-22 | Pusch, Klaus-Werner | Broad band camouflage screen having a frequency dependent radar attenuation |
US4659602A (en) * | 1985-11-12 | 1987-04-21 | Jorgen Birch | Broad spectrum camouflage mat |
WO1987003082A1 (en) * | 1985-11-12 | 1987-05-21 | Jorgen Birch | Broad spectrum camouflage mat and screen |
US4676649A (en) * | 1985-11-27 | 1987-06-30 | Compact Spindle Bearing Corp. | Multi-axis gas bearing stage assembly |
WO1988001363A1 (en) * | 1986-08-21 | 1988-02-25 | Hb Radicool Research & Development | Web material for camouflage against electromagnetic radiation |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0633447A1 (en) * | 1993-07-09 | 1995-01-11 | ETAT FRANCAIS Représenté par le Délégué Général pour l'Armement | Camouflage device |
FR2707385A1 (en) * | 1993-07-09 | 1995-01-13 | France Etat Armement | Camouflage device. |
GB2295665A (en) * | 1994-11-29 | 1996-06-05 | Secr Defence | Infra-red body |
EP2014814A1 (en) * | 2007-07-10 | 2009-01-14 | VERMOP Salmon GmbH | Floor mat made from fluid-absorbing non-woven material |
Also Published As
Publication number | Publication date |
---|---|
EP0378582B1 (en) | 1993-05-12 |
ATE89402T1 (en) | 1993-05-15 |
JPH03502129A (en) | 1991-05-16 |
DE3881054D1 (en) | 1993-06-17 |
EP0378582A1 (en) | 1990-07-25 |
AU629188B2 (en) | 1992-10-01 |
CA1312460C (en) | 1993-01-12 |
DE3881054T2 (en) | 1993-10-21 |
SE8704197D0 (en) | 1987-10-28 |
US5153045A (en) | 1992-10-06 |
NZ226777A (en) | 1991-03-26 |
AU2624588A (en) | 1989-05-23 |
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