Classifications

• • A—HUMAN NECESSITIES
  • A41—WEARING APPAREL
  • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
  • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
  • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
  • A41D13/08—Arm or hand
• • A—HUMAN NECESSITIES
  • A41—WEARING APPAREL
  • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
  • A41D31/00—Materials specially adapted for outerwear
  • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
  • A41D31/24—Resistant to mechanical stress, e.g. pierce-proof
  • A41D31/245—Resistant to mechanical stress, e.g. pierce-proof using layered materials
• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
  • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
  • D02G3/16—Yarns or threads made from mineral substances
  • D02G3/18—Yarns or threads made from mineral substances from glass or the like
  • D02G3/182—Yarns or threads made from mineral substances from glass or the like the glass being present only in part of the structure
  • D02G3/185—Yarns or threads made from mineral substances from glass or the like the glass being present only in part of the structure in the core
• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
  • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
  • D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
  • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
  • D02G3/442—Cut or abrasion resistant yarns or threads
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
  • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
  • D04B1/24—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel
  • D04B1/28—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel gloves
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
  • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
  • D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides

Definitions

• the invention relates to cut protection clothing made of a yarn with a core made of glass filaments and a jacket made of aramid fibers.
• US-A-5,177,948 discloses a non-metallic composite yarn and textile fabrics and protective clothing made therefrom, which are said to have increased cut resistance, flexibility and flexibility compared to cut protection yarns containing metallic wires.
• the yarn of US-A-5,177,948 contains a fiber core and a sheath that is wrapped around the core. At least one strand of the core consists of glass fibers and this strand has a titer of 375 to 1000 den, corresponding to approximately 417 to 1111 dtex.
• the sheath wrapped around the core comprises at least two strands spirally wrapped around the core in opposite directions to one another, and the non-metallic composite yarn has a total titer of 2000 to 5000 den, corresponding to 2222 to 5555 dtex.
• Aramid fibers can be used for the wrapping wrapped around the core, but polyethylene fibers are preferred.
• the composite yarn of US-A-5,177,948 is said to be processed to conventional fabrics on conventional knitting or weaving machines or to be knitted for the production of protective clothing.
• the production of the composite yarn of US-A-5,177,948 is very complex, since two strands of yarn have to be wound around a core and thus first the core, which can also consist of several strands of yarn, and the strands of yarn required for wrapping are made available separately and must be wrapped in further operations.
• this yarn should offer good cut protection, the structure of the yarn should make it difficult to process on modern knitting machines and lead to comparatively stiff cut protection articles due to the structure and thickness of the yarn.
• the present invention is therefore based on the object of providing cut protection clothing which consists of a yarn which can be produced in a simple manner and which offers high cut protection with good wearing comfort. Furthermore, the cut protection clothing should have a high abrasion resistance.
• the yarn is a thread made of glass filaments spun with aramid staple fibers, the spun thread having a total titer of 250 to 1250 dtex and the titer of the glass filaments being 150 to 450 dtex.
• the proportion by weight of the glass filaments should be 30 to 60%, preferably 40 to 50% of the total weight of the wound thread. 400 to 800 dtex are preferred as the total titer of the thread.
• the indicated titer of the glass filaments is in each case the total titer of a multifilament glass filament yarn, which according to the invention is 150 to 450 dtex, preferably 200 to 350 dtex.
• the cut protection clothing is knitted in particular from the wound thread. It is particularly advantageous if two wound threads are twisted together, since this results in a higher abrasion resistance of the cut protection clothing produced therefrom.
• the thread made of glass filaments spun with aramid staple fibers can be produced particularly advantageously by the friction spinning process. This enables inexpensive production of the thread in one operation.
• friction spinning machines such as those under the name DREF 2, DREF 2000 from the textile machine factory Dr. Ernst Fehrer AG or as described, for example, in DE-A-37 41 783, can be used.
• the cut protection clothing is in particular a cut protection glove, but arm guards or forearm protectors are also possible.
• cut protection clothing items of comparatively low weight can be produced, which increases their wearing comfort.
• the weight of a cut protection glove is 15 to 40 g, in particular only 15 to 25 g.
• Cut resistant gloves of the present invention are preferably made with 10 and 13 gauge needle pitches. These are light to very light gloves that are not made with the yarn according to US-A-5,177,948 because the yarn described therein is heavy and inherently too stiff. Processing with a needle gauge of 10 gauge and in particular of 13 gauge with a total titer of the composite yarn of at least 2000 den should hardly be possible.
• cut protection gloves are measured according to the standard DIN EN 388 (1994) "Checking protective gloves against mechanical risks", and the abrasion resistance, cut resistance, tear resistance and puncture resistance determined according to the standard are classified into performance levels 1 to 5, the properties of a protective glove the better the higher the power level into which it is classified.
• a glove was produced from the braided thread used according to the invention for the production of protective clothing with a total titer of 720 dtex, a total titer of the multifilament glass filaments of 340 dtex and a weight fraction of the glass filaments of 47%. Two wound threads were twisted together and two twisted threads were fed in parallel to a knitting machine with 7 gauge needle pitch and knitted. The weight of the glove was 35.6 g.
• the glove was tested in accordance with DIN EN 388 for cut resistance and abrasion resistance at the Institut Textile de France, an accredited certification body for personal protective equipment, and was classified for abrasion resistance in performance level 3 and for cut protection in class 5, i.e. in the highest class a glove can be classified for cut protection.
• a glove was produced from the braided thread used according to the invention for the production of protective clothing with a total titer of 720 dtex, a titer of the glass filaments of 340 dtex and a weight fraction of the glass filaments of 47%. Two of these wound threads were twisted together and the twisted thread was knitted on a knitting machine with a 10 gauge needle pitch. The weight of the glove was 22.3 g.
• This glove was also tested for cut resistance by the Institut Textile de France in accordance with DIN EN 388 and was also classified in Class 5 for cut resistance.
• This glove according to the invention is thus characterized by very high cut protection and low weight, which leads to particularly high wearing comfort.
• a cut protection glove according to the invention was produced, which had a weight of only 17.8 g.
• two wound threads with a total titer of 450 dtex, a titer of the glass filaments of 220 dtex and a weight fraction of the glass filaments of about 49% were twisted together and knitted into a glove on a knitting machine with a needle gauge of 13 gauge.
• the glove had a cut resistance according to DIN EN 388 in class 5 and an abrasion resistance in class 2.
• a glove was produced from the wound thread from Example 2 on a knitting machine with a needle gauge of 10 gauge. The glove was classified at 23.2 g in class 5 for cut resistance and in class 3 for abrasion resistance.
• a glove of 31.9 g was knitted on a knitting machine with a 7 gauge needle pitch from a thread made of glass filaments wound with aramid staple fibers, which had a total titer of 450 dtex, a titer of the glass filaments of 220 dtex and a weight fraction of the glass filaments of 49%. Two wound threads were twisted together, and 3 threads twisted together were fed into the knitting machine in parallel. According to DIN EN 388, the glove was classified in class 5 with regard to cut protection and in class 3 with regard to abrasion resistance.
• a glove was knitted on a knitting machine with 7 gauge needle pitch.
• the thread made of glass filaments wound with aramid staple fibers had a total titer of 2630 dtex.
• the titer of the glass filaments was 680 dtex and their weight fraction was 26%.
• two threads were not twisted.
• DIN EN 388 this glove, which weighed 36.6 g, could also be classified in class 5 with regard to cut protection. In terms of abrasion resistance, however, it was only classified in class 1. In practice, however, not only is a high level of cut protection important, but also a high level of abrasion resistance, since this is decisive for the life of the glove. Thus, the glove of this example does not meet the requirements for a good quality protective glove.
• a glove was knitted on a knitting machine with a 10 gauge needle pitch.
• the thread made of glass filaments spun with aramid staple fibers had a total titer of 360 dtex.
• the titer of the glass filaments was 110 dtex and their weight fraction 30%.
• Two wound threads were twisted together, and two each threads twisted together were fed in parallel to the knitting machine.
• DIN EN 388 this glove, which had a weight of about 22 g, could only be classified in class 1 with regard to cut protection, which means that the glove does not meet the cut protection standard required by industry.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Mechanical Engineering (AREA)
• General Health & Medical Sciences (AREA)
• Physical Education & Sports Medicine (AREA)
• Health & Medical Sciences (AREA)
• Gloves (AREA)
• Professional, Industrial, Or Sporting Protective Garments (AREA)
• Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
• Inorganic Insulating Materials (AREA)
• Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)
• Polishing Bodies And Polishing Tools (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=7652990

Family Applications (1)

Country Status (6)

Families Citing this family (4)

Family Cites Families (10)

• 2000
  • 2000-08-15 DE DE10040589A patent/DE10040589C1/de not_active Expired - Fee Related
  • 2000-10-25 AT AT00123111T patent/ATE286162T1/de active
  • 2000-10-25 PT PT00123111T patent/PT1180555E/pt unknown
  • 2000-10-25 ES ES00123111T patent/ES2235735T3/es not_active Expired - Lifetime
  • 2000-10-25 DK DK00123111T patent/DK1180555T3/da active
  • 2000-10-25 DE DE50009119T patent/DE50009119D1/de not_active Expired - Lifetime
  • 2000-10-25 EP EP00123111A patent/EP1180555B1/de not_active Expired - Lifetime

Also Published As

Similar Documents

Legal Events