EP1111124B1 - Use of spin dyed textile fibre material for producing camouflage articles - Google Patents

Description

The present invention relates to the use of textile spun-dyed fiber material of synthetic fibers or mixtures of cellulose and synthetic fibers, in which the synthetic fiber portion is colored for the production of camouflage articles.

Textile materials for the military sector are usually made of synthetic fibers, such as polyester or polyamide, or of mixtures of cellulose and synthetic fibers. In view of a sufficient camouflage effect, a remission behavior is sought mainly in the shades of light green, gray-green, olive and dark green in the short-wave infrared range, which corresponds to that of the natural leaf green, i. of chlorophyll. At the same time a high level of authenticity, in particular as regards light, chlorine, friction, washing and Scheuerechtheit required.

The fulfillment of the mentioned requirements has caused considerable problems in the past. Thus, in the case of fiber blends, both in textile printing and in dyeing, different substrate-specific dye classes must be used. In addition to a complicated selection of suitable dyes, which must not negatively influence each other neither in their IR remission properties nor in the applicability, separate fixing processes must always be carried out for each dye class. It is also known that it is particularly difficult to dye textiles of pure polyamide in conventional dyeing process. The methods of the prior art are thus time consuming and costly.

There is an urgent need for improved cost-effective method, which should also be reliable and ecologically beneficial.

It has now surprisingly been found that the problems mentioned can be solved by going out of a spun-dyed fiber material in which the synthetic fiber content is dyed with a dye having the required IR remission properties, and then overprinted or over-dyed, in the case of cellulose mixed substrates in this second step, only the cellulose content is printed or dyed.

When printing or dyeing blended fabrics thus no longer has to be used with two classes of dyes and separate fixing processes, since the synthetic fiber content is already covered by the spin dyeing and already includes the chlorophyllähnlichen IR remission course.

The present invention thus relates to the use of textile, spun-dyed fiber material of synthetic fibers for the production of military camouflage articles, wherein camouflage patterns are printed in a conventional manner.

The present invention further relates to the use of textile, spun-dyed fiber material from mixtures of cellulose and synthetic fibers for the production of military Tarnartikeln, wherein the cellulose content is dyed or printed with camouflage patterns.

The textile, spun-dyed fiber materials used according to the invention are in particular as a woven fabric and may consist of pure synthetic fibers, in particular of polyester or polyamide. Preferably, however, they are mixed fabrics with cellulose, wherein cellulose-polyester blended fabrics are particularly preferred.

With regard to the end use, the synthetic fiber content of the textile, spun-dyed fiber materials used according to the invention is usually colored in a medium gray, green or olive shade by spin dyeing. In principle, all dyes which are suitable for spin dyeing and which have the required remission course in the IR range which is similar to chlorophyll can be used. These dyes can be used alone or mixed with each other. In order to achieve the desired base shades, they can further be combined with other colorants which can be used in spin dyeing. However, it is always important to ensure that the IR remission behavior of the final product does not interfere or adversely affect the typical chlorophyll curve. If this condition is met, the proportions of the individual dyes or colorants used are not critical and are determined only by the desired basic color.
Preferred dyes which can be used for the spin-dyeing of the synthetic fiber fraction are, for example, CI Solvent Blue 122, CI Solvent Blue 132, CI Solvent Blue 104, CI Solvent Blue 45, CI Solvent Yellow 83, CI Solvent Yellow 147, CI Solvent Brown 53, CI Disperse Violet 57 and CI Pigment Blue 29.

The process of spin dyeing is known as such. In this case, the spinning solution or the spin melt pigment or soluble dyes are added, which remain in the precipitate in the fiber and thus dye them. The colorants are preferably used in the form of so-called masterbatches, which may already contain any required auxiliary agents. Details on spin dyeing are Römpp Chemielexikon, 9.Auflage, 1992, Volume 5, page 4247 and in particular the cited therein See literature.
Textile, spun-dyed fiber material used according to the invention, which consists exclusively of synthetic fibers,
is used for the production of military camouflage articles. For this, the desired camouflage patterns are printed in the corresponding camouflage shades in a second work step. In principle, the same dyes can be used, which have also been used in spin dyeing. As a rule, disperse dyes are used for polyester fibers and acid or metal complex dyes for polyamide fibers. It is advantageous in this case to produce the spin dyeing in the shade corresponding to the brightest shade of the camouflage print pattern and to print the darker patterns. The brightest shade is usually light green.

If the textile, spun-dyed fibrous material used according to the invention consists of a mixture of cellulose fibers and synthetic fibers, it can be used for the production of military camouflage articles, in which only the cellulose content is dyed or printed in a second operation.
If a plain-colored end product is to be obtained, the dyeing present in the spin dyeing is over-dyed with a dye suitable for cellulose fibers. It is advantageous if the hue produced by spin dyeing has already been set very close to the final hue.

In general, the textile, spun-dyed fiber materials used according to the invention, which consist of a mixture of cellulose fibers and synthetic fibers, but are printed in a second operation with camouflage patterns, again suitable for cellulose dyes are used. It is preferred in this case, the spin dyeing in a medium gray, green or olive tone and the subsequent printing with typical camouflage nuances such Black, brown and various olive or green tones. The middle notes of spin dyeing are superimposed by the stronger, overprinted nuances and do not disturb the overall picture of the finished product.

For the dyeing or printing of the cellulose moiety all suitable dyes for cellulose in question, although it must be ensured that their IR remission course is also similar to that of chlorophyll or at least the remission course of the dye used in the spin dyeing not too strongly adversely affected , In a variant of the present invention, however, it is also possible to print with an extremely low remitting black dye which completely eliminates the chlorophyll-like remission curve. In this case, the IR reflectance values correspond to those of the natural soil, so that also here a use for camouflage purposes is advantageous. The dyestuffs which can be used for dyeing and printing the cellulose fraction can also be used alone or in mixtures with one another in wide mixing ratios.

Preferred dyes suitable for cellulose are in particular vat dyes and sulfur dyes.
Particularly suitable dyes are CI Vat Yellow 4, CI Vat Yellow 33, CI Vat Orange 1, CI Vat Orange 7, CI Vat Orange 11, CI Vat Orange 15, CI Vat Blue 5, CI Vat Blue 19, CI Vat Blue 66 CI Vat Green 1, CI Vat Green 3, CI Vat Green 9, CI Vat Green 13, CI Vat Brown 1, CI Vat Brown 3, CI Vat Brown 57, CI Vat Black 7, CI Vat Black 8, CI Vat Black 9 CI Vat Black 19, CI Vat Black 25, CI Vat Black 27, CI Sulfur Black 1, CI Sulfur Black 6 and CI Sulfur Black 7.

The dyeing and printing of the cellulose content of the textile, spun-dyed fiber material used according to the invention can be carried out by the methods known per se for applying the various classes of dyes, as described, for example, by H. Rath, Lehrbuch der Textilchemie, Springer Verlag, Berlin, Heidelberg, New York, 3rd Edition 1972, in particular pages 557-568, 571-575, 678.683 and 703-704 or M.Peter and HKRouette, Grundlagen der Textilveredlung, Deutscher Fachverlag, 13th Revised Edition, 1989, in particular pages 500-509 and 624-625.

example 1

a) A master batch for PES spin dyeing consisting of 25% CI Solvent Blue 122, 50% CI Solvent Yellow 147 and 25% PBT carrier is used with a concentration of 2.5% as spin dyeing in the PES fiber production. The fineness of the fiber is 1.6 dtex. An olive-green PES fiber is obtained, which is mixed with cotton fibers in the ratio 50:50, spun and woven into a textile fabric or else forfeited or tiled.
b) Tarnnuancen are printed on the textile material produced according to a), wherein a printing paste of the following composition is used. 20.0 g / kg CI Vat Yellow 04 1.9 g / kg CI Vat Orange 07 6.1 g / kg CI Vat Blue 66 700.0 g / kg Thickening for 2-phase fixation 272.0 g / kg Compensation (water or thickening) 1.000,00g After a typical for vat dyes 2-phase fixation to obtain a light green shade with IR remission values, which are very close to those of natural chlorophyll.

Example 2

On the fabric produced according to Example 1a) camouflage are printed using a printing paste of the following composition is used. 13.0 g / kg CI Vat Orange 01 16.0 g / kg CI Vat Blue 66 10.0 g / kg CI Vat Black 27 700.0 g / kg Thickening for 2-phase fixation 261.0 g / kg Compensation (water or thickening) 1.000,00g After a usual for vat dyes 2-phase fixation to obtain a dark green shade with IR remission values, which are very close to those of natural chlorophyll in the dark green.

Example 3

The textile material produced according to Example 1a) is over-dyed in a continuous dyeing process with the vat dyes mentioned in Example 2.

Example 4

On the fabric produced according to Example 1a) camouflage are printed using a printing paste of the following composition is used. 100.0 g / kg CI Sulfur Black 06 700.0 g / kg Thickening for 2-phase fixation 200.0 g / kg Compensation (water or thickening) 1.000,00g After a typical for vat dyes 2-phase fixation to obtain a black shade with IR remission values, which are between 3.0% (600nm) and 10.0% (1300nm) and correspond to those of the natural soil.
The original, chlorophyll-like remission curve of the spun-dyed polyester fiber fraction is completely eliminated by the extremely low-repellency black dye.

Example 5

The textile material produced according to Example 1a) is over-dyed in a continuous dyeing process with the sulfur dyes mentioned in Example 4.

Example 6

A master batch for PA spin dyeing consisting of 40% CI Solvent Blue 132, 40% CI Solvent Yellow 83 and 20% Carrier for PA is provided with a Concentration of 2.5% used as spin dyeing in PA (PA 6 or PA6.6) fiber production.
An olive-green polyamide fiber is obtained, which is spun and woven into a textile fabric, forfeited or tiled. The fabric is uniformly colored and can then be printed in the usual way with dye classes typical for polyamide fibers, such as acid, metal complex or reactive dyes.

Example 7

The polyamide fibers obtained according to Example 6 are mixed with cotton fibers in a ratio of 50:50 and converted as described into a textile fabric. On this structure are printed analogously to Examples 1b, 2 or 4 camouflage shades.

Claims (6)

1. The use of textile spun-dyed fiber material comprising synthetic fibers spun-dyed with a dye having a chlorophyll-like reflectance in the IR region for producing military camouflage print articles, which comprises camouflage patterns being printed on.
2. The use of textile spun-dyed fiber material comprising mixtures of cellulosic and synthetic fibers wherein only the synthetic fiber fraction is spun-dyed with a dye having a chlorophyll-like reflectance in the IR region, for producing military camouflage articles, which comprises the cellulose fraction being dyed or printed with camouflage patterns.
3. The use of claim 2, wherein a textile fiber material spun-dyed in medium gray, green or olive shades is cross-printed with camouflage patterns in black, brown, olive or green shades.
4. The use of claim 2 and/or 3, wherein the cellulose fraction is dyed or printed with vat or sulfur dyes.
5. The use of claim 4, wherein the vat dyes used are C.I. Vat Yellow 4, C.I. Vat Yellow 33, C.I. Vat Orange 1, C.I. Vat Orange 7, C.I. Vat Orange 11, C.I. Vat Orange 15, C.I. Vat Blue 5, C.I. Vat Blue 19, C.I. Vat Blue 66, C.I. Vat Green 1, C.I. Vat Green 3, C.I. Vat Green 9, C.I. Vat Green 13, C.I. Vat Brown 1, C.I. Vat Brown 3, C.I. Vat Brown 57, C.I. Vat Black 7, C.I. Vat Black 8, C.I. Vat Black 9, C.I. Vat Black 19, C.I. Vat Black 25 or C.I. Vat Black 27.
6. The use of claim 4, wherein the sulfur dyes used are C.I. Sulfur Black 1, C.I. Sulfur Black 6 or C.I. Sulfur Black 7.