Patent Application
20070218253
Not Applicable.
The present invention relates to an improved three-dimensional fabric for use in the manufacture of camouflage garments and a method for making same. In particular, the present invention relates to a three-dimensional camouflage fabric employing edge strips that naturally assume a three-dimensional contour.
Camouflage fabrics are well known and are used in garments worn by hunters as well as armed forces personnel for purposes of concealment. Such fabrics are sometimes used for decorative purposes.
One known type of camouflage material is produced by stitching a sheet of camouflage fabric to a sheet of substrate material in a “quilting” fashion, wherein the sheets are stitched together by parallel spaced rows of stitches. The camouflage layer is then cut into strips having irregular, leafy edges between the rows of stitches. A problem with this type of product is that the outer layer tends to lie flat against the substrate, unless the fabric is bent around body parts when the garment is worn.
A number of efforts have been made to improve the three-dimensional effect of camouflage garments. One method is to mechanically form wrinkles in the camouflage fabric at the time it is stitched to the substrate. One such process is described in applicant's co-pending Patent Application No. 60/720,312, filed Sep. 23, 2005, which is incorporated by reference.
Another method for providing a three-dimensional contour to camouflage material is to employ a thermoplastic camouflage fabric and to heat the camouflage fabric at least at discreet locations, so as to produce heat induced deformations in the camouflage layer. One such method for producing three-dimensional camouflage material by heat deformation is shown in applicant's co-pending Patent Application Ser. No. 60/720,059, filed Sep. 23, 2005, which is incorporated by reference.
An object of the present invention is to provide an improved camouflage material, wherein a three-dimensional contour is achieved without a special manufacturing operation in attaching the camouflage fabric to the substrate or in deforming the camouflage fabric.
As used herein, the expression “camouflage material” is intended generally to apply to the composite multi-layer material. The term “fabric” may be used to refer to the camouflage or substrate layers of the composite material, with the understanding that such layers may be formed by sheet materials that do not necessarily come within the technical definition of fabric. The preferred embodiments however are technical fabrics.
Referring now to the drawings, an exemplary section of camouflage material 10 constructed in accordance with the present invention and oriented vertically is shown in
The material from which the present camouflage material is made can be conventional. The substrate material typically is a mesh or woven fabric and can include waterproofing or scent blocking material. Some substrate materials (e.g., waterproof and scent blocking materials) have a relatively low melting point and thus are sensitive to the use of some heat processes for producing a three-dimensional configuration to the camouflage layer.
The camouflage layer is formed by a plurality of strips of typically preprinted camouflage fabric. A pongee polyester material is commonly employed but is not required in the present invention. This material is a lightweight woven synthetic fabric. Such material is flexible but has sufficient stiffness that lobes formed on irregular side edges tend to be maintained in a flat orientation even when the sheet is positioned vertically, at least when lobe configurations of the type previously used are employed. In previous lobe configurations, the lobes tended to have a wide base adjacent to a central portion that is attached to the substrate, and the lobes would become irregularly narrower as they extended outwardly from the base. With a base as wide or wider than the outer tip, the lobes tended to remain flat against the substrate, unless mechanically or heat deformed.
In the camouflage material 10 of the present invention, the individual strips of camouflage fabric 14 comprise a narrow central portion 18 that is attached by stitches 16 to an underlying substrate 12. Relatively long and narrow edge strips 20 extend laterally outwardly from outer edges of the central portion. The edge strips can vary in width and length to form an irregular and natural appearing pattern in order to produce a natural-appearing random effect. Each edge strip 20 is a generally laterally extending strip of material having a body 21 that extends from a base 19 attached to central portion 18 to an outer tip or end 22.
An important feature of the edge strips of the present invention is that they are narrow enough at least some portions and are long enough that at least certain of the edge strips tend to deform under the influence of gravity out of their flat or planar configuration and bend in an arc downwardly and away from the substrate material. The edge strips thus tend to naturally deform under the influence of gravity into a three-dimensional configuration. Because the edge strips are mounted on the outer side of the substrate, the deformation of the ends or the edge strips is confined to an outward direction, away from the substrate. The edge strips are wide enough and resilient enough that they fold out in an arc and do not simply fold over flat.
The deformation of the edge strips into a three-dimensional arcuate configuration is enhanced by forming the edge strips with bulbous or enlarged ends 24 at various positions along the strips 14 of camouflage fabric. The bulbous ends provide wider edge strip width and therefore increased weight at the outer tip of the edge strips, which causes the edge strips to twist outwardly and deflect downwardly. The body and outer tip of the edge strip thus curves arcuately away from the base, giving the fabric a three-dimensional contour.
It is not necessary for every edge strip in the strip to be configured so as to be easily deformable into a three-dimensional configuration. It is sufficient that a large enough number of the edge strips are so configured to give the camouflage material an overall three-dimensional appearance.
Referring to
In the illustrated embodiment, the angle of inclination of the edge strips is about 35° for a substantial number of strips. A larger angle of up to about 45° or so is acceptable. Strips that are not straight but have upwardly extending portions also produce the desired effect. Strips formed at a smaller inclination also can be satisfactory. An inclination of as low as 15° can produce the desired effect, depending on the fabric and its length and width.
The edge strips at the right hand side of the fabric strips do not have to be inclined downwardly, as in the exemplary embodiment, but could also be inclined upwardly, so that the edge strips on both sides of a camouflage fabric strip would bend downwardly.
While the dimensions of the edge strips can vary and still produce the three-dimensional effect of the present invention, when a conventional camouflage fabric is used, one desirable configuration employs naturally deforming edge strips that are at least about two inches long and are no more than about one-half inch wide at the narrower portion intended for deflection. The narrower portion should be long enough to permit the body to twist out and down. Desirably, the edge strips are about five times longer than they are wide. Preferably, the bulbous ends are about one and one-half times the width of the body at its narrower portion, so that the additional mass will be sufficient to induce deflection. All of these dimensions can be varied to produce a desired effect with a particular fabric.
In attaching the camouflage strips to the substrate, a desirable three-dimensional effect is achieved in a camouflage material when the strips of camouflage fabric are separated by parallel rows of stitching approximately three inches apart, with each strip of camouflage fabric being approximately six inches wide or somewhat wider. The closer the strips are together and the longer that the edge strips are, the greater is the three-dimensional effect. However, with a conventional quilting machine, it is difficult to sew two strips of camouflage material together on a substrate when the outer tips of the edge strips extend outwardly beyond the distance between the lines of attachment of the adjacent strips. In such a case, the outer edges of one strip of fabric can be sewn onto the substrate material by the stitching applying the adjacent strip of fabric. To avoid that in the present invention, the sewing process desirably is conducted upside-down, as shown in
While the camouflage material of the present invention is desirably formed with some edge strips having bulbous ends formed on the ends of relatively narrower body portions of the edge strips of the camouflage fabric, the exact manner in which this is achieved and the exact number of enlarged bulbous ends is not critical, as long as the overall effect is three-dimensional. Because of this, it is possible to configure the side edges of the strips in a number of ways. For example, oak leaves 40 are shown in the garment 46 of
The present invention can also be used with unconventional edge designs. For example, camouflage fabric strips 50, shown in
The camouflage strips also can be configured to display a repetitive graphic design or logo. As shown in
The camouflage fabric can be formed into narrow strips from a wider web or roll of fabric by laser cutting, die cutting, or hot wire or hot air cutters. In the preferred practice of the invention, a series of laser cutters mounted on a movable bridge extend transversely over a cutting table, and a wide web of camouflage fabric is passed under the laser cutters, which cut the web into a series of strips. Computer controlled drive units for the fabric and lasers can be programmed to produce the side edge configuration desired.
It should be understood that the foregoing is merely representative of the preferred practice of the present invention, and that various changes in the arrangements and details of construction can be made without departing from the spirit and scope of the present invention.
This application is based on and claims the filing date of Applicant's co-pending U.S. Provisional Patent Application No. 60/752,853, filed Dec. 22, 2005, which is incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| 60752853 | Dec 2005 | US |
