DE202008018139U1 - Textile fabric - Google Patents

Abstract

Textile fabric, in particular textile interlining material made of a textile fabric with an antistatic effect of threads crossing each other at right angles and / or diagonally, such as woven fabrics, knitted fabrics with weft threads, knitted fabrics with weft threads, multiaxial knitted fabrics, braiding, thread layer sewing active substance, characterized in that in weft thread and Warp thread system additionally a core-sheath yarn with in particular at least one wrapping yarn made of electrically non-conductive material wound filaments with a lobal, electrically conductive core filament is arranged so that the yarns cross and the distance between such adjacent core-sheath yarns in the warp and weft direction is at least 4 and at most 100 mm and that the mass fraction of the electrically conductive component based on the total mass of the textile interlining is 1 to 10%.

Description

The invention relates to a textile fabric, in particular a textile interlining fabric consisting of a fabric of perpendicular and / or diagonal crossing threads, such as fabric, knitted fabric with weft, knitted fabric, Multiaxialgewirke, braid, Fadenlagen-Nähwirkstoff o. exists and is used as a shaping and shape-retaining insert under textiles, in particular outer fabric for uppers, leisure, sports and workwear, protective clothing.

Textile interlining fabrics have long been mainly used in garments in the front, in collar u. Ä. Used to give the outer fabric material and thus the entire prefabricated item standing, flexibility and recovery after use stresses or after washes or other care requirements.

The appearance, feel, shape stability, and comfort of the garment or other article provided with the insert depend on the nature, construction, mass and finish of the insert. Current fashion trends, the use of new outer fabric constructions, the trend towards ever lighter outer material materials also influence the type, properties and use of such textile interlining materials.

In principle, all types of textile fabrics are used as interlining material, from woven fabric with hair yarn as weft thread material over warp knit fabrics made of synthetic textured yarns to nonwoven fabrics with strength and stiffness achieved by chemical or thermal bonding. Also product groups in the sense of a more comprehensive functional fulfillment, such as the combination of knitted fabric with a nonwoven fabric are in use.

In this case, these textile interlining materials are usually equipped free of shrinkage by chemical or thermal treatment and provided on one surface side with a usually point-like applied adhesive material, to then be connected to the corresponding upper parts in the sense of a completely effective deformation and recovery by gluing.

In general, then the interlining substances form the skeleton of the clothing items. They ensure that the shape is permanently retained, that no wrinkles form, they support the soft, flowing case and prevent unwanted compression, which can be avoided, for example. B. can be done while sitting the wearer of such items of clothing. Their shape and their weight must each match that of the outer fabric.

In clothing as a textile wrapping of the human body for protection, as an optical element, as a cladding cladding wins as a result of technical development, an integrated shielding against radiation of any kind constructive, economic and personal significance.

Now, in principle, the human body is to be regarded as an electrical conductor, while the textiles, especially those made of synthetic fibers or plastics, act as an insulator and therefore charge electrostatically. These electrostatic charges can lead to various adverse effects on humans as wearers of such textiles in many applications of textiles in home, clothing and home.

From the field of protective clothing, for example, the use of special fabrics with high surface conductivity as outer fabric is known.

So will in DE 297 20 988 U1 an arc protection clothing claimed in the form of a work suit, which consists of a textile surface, in the sense of DIN EN 1149 is electrically conductive. In this case, no specific information on the yarn construction and the type and amount of conductive fibers are made in this patent.

Water-jet-strengthened spunbonded fabrics containing a filament component with an additive additive in the form of a permanently acting antistatic agent and in an amount of up to 10 percent by weight, is after DE 199 623 58 C1 for the product pocket lining and after DE 199 623 59 A1 claimed for the product warming clothing lining.

Also, fabrics or other textile surface constructions with some surface conductivity are attributed to shielding the human body from low frequency electrical or electromagnetic radiation. This can be z. B. malfunction of pacemakers or other arranged in or on the human body diagnostic equipment, sensors o. Ä. Avoid. Also, according to research, personal well-being should increase if the body can be protected from such low-frequency electrical or electromagnetic radiation.

Since textile interlayers act as a component in the garment fabric as a surface bond between or on conductive or between conductive and non-conductive or between non-conductive textile surfaces, they are of interest with their own surface conductivity of sufficient size for diverse applications of the respective garments.

The present invention is therefore based on the technical task to develop a special textile interlining material that is inexpensive to produce and easy to process, which has a sufficient bearing capacity and elasticity in terms of basis weight or basis weight and design type broad product range of textile outer fabrics, a certain antistatic Effect as a result of sufficient surface conductivity shows and resists in all functional properties high use and care demands.

In many experiments, it has been found that when using a core-sheath yarn with filaments with a conductive core thread as the core in a certain fineness range, a textile interlining material in an average basis weight area arises, on the one hand has sufficient for this application carrying capacity and elasticity and thus on the other In a particular arrangement of these conductive core-sheath yarns, especially in terms of their distance from adjacent yarns of the same type in the warp and weft directions, sufficient conductivity also occurs in the entire surface of the interlining material.

The distances of the electrically conductive core-sheath yarns in the longitudinal or warp direction and in the transverse or weft direction responsible for the antistatic effect of the textile interlining material are determined by the number of such core sheath yarns within the warp and weft yarn density relative to 1 dm or 10 cm or procedurally after how many normal warp and weft threads in each case a core-sheath thread is entered into the fabric to be produced.

For textile surfaces with a diagonal arrangement of threads, analog arrangement approaches apply.

In this case, small distances higher and long distances lower dissipation effects.

The use of core-sheath threads in textile surface constructions for use as interlining material is new. The construction of a core-sheath filament and the resulting filament properties are not optimal for softness and conformability in the surface as an important property of interlining materials. Now it has been determined in many experiments that when using such core-sheath threads with a small proportion of the overall construction of a textile surface and with corresponding distances of such threads from each other in terms of carrying capacity, elasticity and bending stiffness with respect to an application as interlining this can have quite good values ,

According to the invention the task for a textile interlining material with antistatic effect is achieved with sufficient buoyancy and elasticity by the features indicated in claim 1. Advantageous embodiments are contained in the subclaims.

The textile Einlagestoff invention with antistatic effect consists of a fabric of perpendicular and / or diagonal crossing threads, such as fabric, knitted fabric weft, knitted fabric with weft, Multiaxialgewirke, braid, Fadenlagen-Nähwirkstoff, wherein in the weft and warp thread in addition so said core-sheath yarn is arranged with filaments with electrically conductive core material so that the distance of such adjacent core-sheath yarns in warp and weft direction is at least 4 and at most 100, in particular between 8 and 10 mm and that the mass fraction of the electric conductive component based on the total mass of the textile interliner 1 to 10, in particular 3 to 5 wt .-% is.

According to an advantageous embodiment of the invention, the core-sheath yarn with filaments with electrically conductive core material has a fineness in the range of 11 to 1100, in particular from 30 to 50 dtex and the basis weight of the insert is suitably in the range of 10 to 500, in particular from 20 to 100 g / m ² .

According to a further advantageous embodiment of the invention, a nonwoven fabric is additionally arranged on or in the textile fabric by mechanical binding or gluing or gluing and this nonwoven fabric expediently has a basis weight of 20 to 80 g / m ² .

According to a further advantageous embodiment of the invention, the conductive yarns filaments with a core of monofilament carbon filament and a sheath of plastic z. B. of polyamide or polyester. In this case, the electrically conductive, in particular formed as a core filament core material is embedded within the sheath of these two-component Garnfilamente and does not extend radially to the shell surface. Conveniently, the core filament is at least bilobal, in particular trilobal or even mehrlobal or two, three, four, five or six lobes, as in DE 690 13 395 T2 disclosed trained. Such yarns do not require grounding to dissipate electrostatic charge. They discharge by air ionization through the so-called corona effect or corona discharge.

According to a further advantageous embodiment of the invention, the interlining material at least on one surface side a flat or punctiform or linear or patterned coating of a pressure sensitive adhesive or hot melt adhesive. The adhesive points of the punctiform coating expediently have a diameter between 0.15 and 10 mm. Furthermore, it is expedient if the coating has a weight per unit area of 3 to 100 g / m ² , in particular of 6 to 20 g / m ² . In particular, the coating consists of polyester, polyamide, polyurethane or mixtures thereof.

The use of the glue dots apparently promotes the Ableitfähigkeit. The adhesive appears to absorb the water molecules and / or OH groups present in the air due to atmospheric moisture and / or those provided by body vapors, thus increasing the conductivity.

In accordance with a further advantageous embodiment of the invention, the interlining material measures an electrical shielding factor S measured EN 1149-3 2004 between 0.39 and 0.75 and preferably half-life factors t ₅₀ under 4 s.

According to a further advantageous embodiment of the invention, the half-life factors are t _{50 of} the Einlagestoffes after EN 1149-3 below 0.1 s.

According to a further advantageous embodiment of the invention, the electrically conductive yarns of the interlining material are not grounded.

According to a further advantageous embodiment of the invention, the textile fabric comprises cotton, viscose, polyester filament or polyamide yarns or polyester or polyamide fibers or mixtures thereof or Kevlar or aramid or glass or similar high performance fibers or synthetic yarns preferably having finenesses between 7 and 1100 dtex , in particular between 33 and 167 dtex.

The advantage of the invention is to be seen in the fact that conductive lattice-shaped arranged and optionally connected thread structures are arranged in a known textile surface construction by special use of material in the longitudinal and transverse directions or in special surface structures in the diagonal direction, the effect of their discharge effects with respect to electrostatic charges or have other rays and thus give the inventive textile fabric positive wearing effects of the articles of clothing produced therewith. It is also essential that the selected material use the anti-static effect even after care requirements, such as washing, chemical cleaning u. a. is fully preserved.

As already explained above, it is possible in a further development of the invention to add a nonwoven fabric to the basic construction of the textile surface made of woven, knitted or knitted fabric with additionally incorporated core-sheath threads directly in the production thereof or in an additional operation. This nonwoven fabric provides the textile interlining additional functions in terms of softness, bulk or climate behavior.

According to the electrostatic material requirements of protective clothing EN 1149-5 2005, electrostatically dissipative material must fulfill at least one of the following requirements: the half-life t ₅₀ <4 s or the screening factor S> 0.2 tested according to EN 1149-3 , Test method 2 (Influence charging).

The invention will be described below with reference to two exemplary embodiments.

In the first exemplary embodiment, the textile fabric for the textile interlining material according to the invention is a fabric of the following construction:
Warp: filament yarn 100% polyester textured, fineness 78 dtex f 24 × 1;
Weft: Filament yarn of 100% polyester textured, fineness 50 dtex f 36 × 2;
Core-sheath yarn in the warp: 39 dtex f 6 × 1 with filaments having a core of lobal, especially trilobal, monofilament carbon filament and a sheath of polyester;
Core-sheath yarn in the weft: 39 dtex f 6 × 1 with filaments having a core of lobal, especially trilobal, monofilament carbon filament and a sheath of polyester;
Tissue binding: X twill 2/2;
Warp density: 230 warp threads / dm, with the core-sheath yarn being used for every 44th warp yarn; this gives a distance between two adjacent core-sheath yarns in the warp direction of 16 mm;
Weft density: 155 wefts / dm, with the core-sheath yarn inserted for every 24th weft; this gives a distance between two adjacent core-sheath yarns in the weft direction of 16 mm;
Basis weight, finished with punctiform double-point coating (17 mesh): 70 g / m ² .

Due to the distances of the core-sheath yarns with conductive carbon monofilaments in the warp and weft directions of 16 mm each, the interlining fabric thus produced has a shielding factor as the measured value EN 1149-3 from S = 0.36 to. The half-life t ₅₀ after EN 1149-3 is 0.01 s.

In the second embodiment, the textile fabric for the textile insert fabric according to the invention is a warp knit with weft insertion. The following production parameters apply:
Warp: filament yarn made of 100% polyamide textured, fineness 11 dtex f 7;
Weft: Filament yarn of 100% polyamide textured, fineness 11 dtex f 7;
Core-sheath yarn in the warp: 39 dtex f 6 × 1 with filaments having a core of lobal, especially trilobal, monofilament carbon filament and a sheath of polyester;
Core-sheath yarn in the weft: Fineness 39 dtex f 6 × 1 with filaments having a core of lobal, especially trilobal, monofilament carbon filament and a sheath of polyester.

This warp knit has 32 gsm (32 threads per inch, 1 inch = 2.54 cm), every 30 warp threads and every 55th row of stitches is covered with the core-sheath yarn. The weft density is 340 weft threads per dm, the mass per unit area of the warp knit with punctiform double point coating is 20 g / m ² .

Due to the distances of the core-sheath yarns with conductive carbon monofilaments in the warp and weft directions of 16 mm each, the interlining fabric thus produced has a shielding factor as the measured value EN 1149-3 from S = 0.32 to. The half-life t ₅₀ is 0.01 s.

In any case, the intrinsic capacity of the interlining material is generally sufficient for sufficiently dissipating an electric charge during normal use of the outerwear by corona discharge, without requiring further dissipation.

It is within the scope of the invention to use the textile fabric of the invention as a textile fabric everywhere where electrostatic charges must be reduced, for. As in the protective coating of wire harnesses or seat cover constructions or as bedding.

In the context of the invention, in particular yarn counts or yarn counts of the electrically conductive yarns are processed which correspond to the yarn counts or yarn counts from which the combined fabric is made. These are z. B. six filaments of electrically conductive yarn wound with a Umwindungsgarn of non-conductive material, eg. B. of polyester.

In principle, the individual filaments of the electrically conductive yarns are not readily processable because of their fineness on commonly used weaving and knitting machines. For this reason, depending on the application, several filaments are combined and with at least one of the strength of the filament bundle increasing Umwindungsgarn of non-conductive material, eg. B. polyester wound.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 29720988 U1 [0010]
• DE 19962358 C1 [0011]
• DE 19962359 A1 [0011]
• DE 69013395 T2 [0024]

Cited non-patent literature

• DIN EN 1149 [0010]
• EN 1149-3 [0027]
• EN 1149-3 [0028]
• EN 1149-5 [0033]
• EN 1149-3 [0033]
• EN 1149-3 [0036]
• EN 1149-3 [0036]
• EN 1149-3 [0039]

Claims (11)

Textile fabric, in particular textile Einlagestoff from a fabric with antistatic effect of perpendicular and / or diagonal crossing threads, such as fabric, knitted fabric weft yarn with weft, Multiaxialgewirke, braid, Fadenlagen-Nähwirkstoff, characterized in that in weft and Warp system additionally a core-sheath yarn is arranged in particular with at least one Umwindungsgarn of electrically non-conductive material wound filaments with a lobal electrically conductive core filament so that the yarns intersect and the distance of such adjacent core-sheath yarns in the warp and weft directions is at least 4 and not more than 100 mm and that the mass fraction of the electrically conductive component based on the total mass of the textile interlining material is 1 to 10%. A fabric according to claim 1, characterized in that the fineness of the core-sheath yarn is in the range of 11 dtex to 1100 dtex and the basis weight of the interlining is preferably in the range of 10 to 500 g / m ² . Fabric according to claim 1 and / or 2, characterized in that on or in this textile fabric additionally a nonwoven fabric by mechanical binding or bonding or gluing is arranged and this nonwoven fabric preferably has a basis weight of 20 to 80 g / m ² . Sheet according to one or more of the preceding claims, characterized in that the conductive yarns as filaments with filaments with a lobal in particular trilobal core of monofilament carbon filament and a sheath made of plastic z. B. of polyamide or polyester. Sheet according to one or more of the preceding claims, characterized in that the interlining material has at least on one surface side a flat or punctiform coating of a pressure-sensitive adhesive or hot melt adhesive, wherein the coating preferably has a basis weight of 3 to 100 g / m ² , in particular of 6 to 20 g / m ² . Sheet according to claim 5, characterized in that the coating consists of polyester, polyamide, polyurethane or mixtures thereof. Sheet according to claim 5 and / or 6, characterized in that the adhesive points of the punctiform coating have a diameter between 0.15 and 10 mm. Sheet according to one or more of the preceding claims, characterized in that the interlining material has an electrical shielding factor S measured according to EN 1149-3 between 0.39 and 0.75 and half-life factors t ₅₀ below 4 s. Sheet material according to one or more of the preceding claims, characterized in that the half-life factors t _{50 of} the interlining material measured according to EN 1149-3 are below 0.1 s. Sheet according to one or more of the preceding claims, characterized in that the electrically conductive yarns of the interlining material are not earthed. Fabric according to one or more of the preceding claims, characterized in that the textile fabric is cotton, viscose, polyester filament or polyamide yarns or polyester or polyamide fibers or their blends or Kevlar or aramid or glass or similar high performance fibers or synthetic yarns, preferably with finenesses between 7 and 1100 dtex, in particular between 33 and 167 dtex.