EP2623164A1 - Coutures imperméables pour les vêtements perméable CBRN - Google Patents

Coutures imperméables pour les vêtements perméable CBRN Download PDF

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Publication number
EP2623164A1
EP2623164A1 EP13153998.3A EP13153998A EP2623164A1 EP 2623164 A1 EP2623164 A1 EP 2623164A1 EP 13153998 A EP13153998 A EP 13153998A EP 2623164 A1 EP2623164 A1 EP 2623164A1
Authority
EP
European Patent Office
Prior art keywords
thread
protective clothing
fabric
weight
clothing according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13153998.3A
Other languages
German (de)
English (en)
Other versions
EP2623164B1 (fr
Inventor
Lieven Smissaert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seyntex NV
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Seyntex NV
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Publication date
Application filed by Seyntex NV filed Critical Seyntex NV
Publication of EP2623164A1 publication Critical patent/EP2623164A1/fr
Application granted granted Critical
Publication of EP2623164B1 publication Critical patent/EP2623164B1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D5/00—Composition of materials for coverings or clothing affording protection against harmful chemical agents
    • 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
    • D02G3/46—Sewing-cottons or the like
    • 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
    • D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/01—Natural vegetable fibres
    • D10B2201/02—Cotton
    • 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
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]

Definitions

  • This invention relates to the use of a thread whereby no wicking occurs to make the stitching of CBRN clothing impermeable for chemical and/or biological agents. Furthermore, this invention relates to the use of this CBRN clothing with such stitching for protection against chemical and/or biological agents.
  • the invention relates to making stitching in CBRN clothing impermeable against chemical and/or biological agents.
  • CBRN clothing represents clothing for protection against chemical, biological, radiological and nuclear factors. This clothing must be made in such a way that none of these hazardous substances can reach the body or underwear of the relevant persons.
  • CBRN clothing There are in principle three types of CBRN clothing: air and water vapour impermeable clothing made with a layer of impermeable rubber. This type, however, rapidly builds up a large amount of heat and is uncomfortable. On the other hand, there is also air and water vapour permeable clothing that is very comfortable. Finally, there is also clothing that consists of 2 layers.
  • the first layer is an outer fabric (3) and the second layer is an inner fabric (5).
  • a membrane is present that is water vapour permeable, but said chemical and/or biological agents cannot go through.
  • the active component of the membrane is based on active charcoal (4) (powders or fibres) that absorb the chemical and/or biological agents.
  • CBRN clothing of the latter type for example trousers or vests
  • trousers or vests are made up and show seams in various places where pieces are sewn together. Seams are also found on other places in this protective clothing, for example, in zippers and pockets. These stitched components are known as the faint element in the structure of protective clothing.
  • Biological and/or chemical agents such as mustard gas
  • US6691326 describes the use of a special zipper for protection against chemical and/or biological agents.
  • a special coating is used so that the seams are densely coated.
  • EP1725127 describes the use of different laminates to cover stitched seams with an extra layer to thus use the extra layer as seal against chemical and/or biological agents. This technique is described on the use for protective clothing for the lower part of the leg.
  • the purpose of this invention is to make the stitching of CBRN clothing impermeable against chemical and/or biological agents. This is achieved by means of a sewing thread that has been treated in such a way that no wicking occurs; hence there is no absorption and spreading of liquids through the sewing thread.
  • the invention provides a piece of protective clothing in particular suitable for military use, comprising at least two layers of fabric, a first outer fabric and a second inner fabric, both with a weight of 25 to 400g/m 2 with the characteristic that the protective clothing is provided with stitching comprising thread that is oleophobic.
  • the oleophobic thread ensures that no wicking can occur in the stitching and that there is no transport of chemical and/or biological agents by the sewing thread in stitching. This way it is possible to use stitches when making military protective clothing without the need to use any additional materials to protect the stitching against breakthrough and without the loss of comfort.
  • the oleophobic thread comprises fibres selected from the group of polyester, cotton, polyamide, viscose, flax, or mixtures of two or more fibres from this group. More preferably, the thread is composed of fibres from polyester and cotton, preferably between 40-60% and 60-40% polyester-cotton, more preferably in an equal ratio.
  • the thread preferably has a weight of 20 to 200 tex, more preferably 30 to 120 tex. In a preferred implementation, the thread has a weight of 50 to 80 tex.
  • the advantage of this implementation is that the thread has a sufficient strength for making the stitches.
  • this invention provides a method for the production of protective clothing, in particular suitable for military use that comprises at least two layers of fabric, characterized in that the protective clothing is provided with stitching comprising thread that has undergone an oleophobic treatment.
  • the invention provides a piece of protective clothing in particular suitable for military use, comprising at least two layers of fabric, a first outer fabric and a second inner fabric, both with a weight of 25 to 400g/m 2 with the characteristic that the protective clothing is provided with stitching comprising thread that is oleophobic.
  • stitch refers in this invention to a place on the piece of clothing where there is a seam or stitching.
  • seam refers in this invention to a place where a connection has been made between different layers of fabric with a sewing thread.
  • stitching refers in this invention to a place where a sewing thread only connects an outer and inner fabric.
  • stitching occurs through the outer fabric (3) and the inner fabric (5) of CBRN clothing with a thread that has been functionalised in such a way that wicking of chemical and/or biological agents is non-existent in the thread.
  • wicking refers in this invention to the capillary action of a liquid in a thread. Wicking means the ability of the thread to spread liquid in the thread which comes into contact with the thread.
  • the purpose of the outer fabric (3) is keeping the chemical and/or biological agents in liquid form away by being water and oil repellent.
  • a fabric can be used for this, on the basis of cotton, cellulose acetate, flax, linen, aramid, polyester, polyamide, polyurethane, viscose, poly(meth)acrylate, polyolefin, polysulfone, polyethersulfone, polyether ether ketone, polyether ketone, polystyrene, poly para-phenylene sulphite, polytetrafluoroethylene, polyvinyl chloride or copolymers thereof and all possible mixtures of aforementioned; preferably cotton, polyester or polyamide and their mixtures are used; most preferably cotton is used.
  • the outer fabric (3) has a basic weight that is in the range of 25 to 400 g/m 2 , or preferably in the range of 75 to 300 g/m 2 , or most preferably in the range of 125 to 250 g/m 2 .
  • the inner fabric (5) and the membrane (4) are intended to stop the diffused passing of the vapour of chemical and/or biological agents. This is achieved by means of capturing through an adsorption medium which is processed in the membrane.
  • the adsorption medium can be selected from active charcoal, carbon fibres, nano fibres, lime, zeolite and other substances with a high internal surface area; preferably active charcoal or carbon fibres is used, and most preferably active charcoal is used.
  • the inner fabric (5) has a basic weight that is in the range of 25 to 400 g/m 2 , or preferably in the range of 50 to 300 g/m 2 , or most preferably in the range of 75 to 200 g/m 2 .
  • the membrane (4) with the adsorbing medium has a basic weight that is in the range of 25 to 300 g/m 2 , or preferably in the range of 50 to 275 g/m 2 , or most preferably in the range of 75 to 250 g/m 2 .
  • a suitable sewing thread (6) for the stitches is a sewing thread that does not absorb any drops of chemical and/or biological agents and does not show any wicking of these agents.
  • a treated thread can be used based on polyester, cotton, polyamide, viscose, flax and mixtures of two or more of the aforementioned materials, or preferably thread is used that consists of a mixture of polyester/cotton in a ratio between 60/40 and 40/60, or most preferably a thread is used that consists of a mixture of polyester/cotton in a 50/50 ratio.
  • the sewing thread has a weight that ranges between 20 and 200 tex, or preferably between 30 and 120 tex, or most preferably between 50 and 80 tex.
  • the treatment of the thread must be an oleophobic treatment whereby the thread undergoes a coating via a technique such as extrusion coating, slot coating, foulard coating, roller coating, spray coating, or coating through a bath.
  • a technique such as extrusion coating, slot coating, foulard coating, roller coating, spray coating, or coating through a bath.
  • the most preferential setup is by coating the thread via immersion through a bath with a fluorocarbon solution, followed by a thermal curing of the thread.
  • the fluorocarbon solution consists of a concentration between 1 and 400 ml/l, or more preferably a concentration between 5 and 200 ml/l or the most preferential between 20 and 60 ml/l.
  • the thread is then dried at a temperature between 50 and 90 °C, preferably at a temperature between 60 and 80 °C or most preferably at a temperature between 65 and 75 °C. This is achieved during a period between 10 and 50 minutes, preferably during a period between 20 and 40 minutes or most preferably during a period between 25 and 35 minutes.
  • the thread that is treated that way can undergo an after treatment where the full curing of the fluorocarbon is intended.
  • This curing is achieved by pressing the thread on a hot surface.
  • the curing is achieved at a temperature between 110 and 210 °C, preferably at a temperature between 130 and 190 °C or most preferably at a temperature between 150 and 170 °C. This is done during a period between 1 and 60 seconds, preferably during a period between 5 and 30 seconds or most preferably during a period between 10 and 20 seconds.
  • Table 1 Sewing thread no. Basic material Treated with After treatment G-01 Polyester/cotton (50/50), 60 tex - - G-02 Polyester/cotton (50/50), 60 tex Water repellent finish - G-03 Polyester/cotton (50/50), 60 tex Oil repellent finish - G-04 Polyester/cotton (50/50), 60 tex Oil repellent finish 15 sec pressing at 160 IC
  • G-01 is a comparative example, a standard polyester/cotton thread that has not been treated.
  • the finishing technique to treat the threads G-02 to G-04 is done via a bath coating in the respective solutions.
  • the outer fabric (3) that was used was a cotton fabric of 200 g/m 2 .
  • Both inner fabrics had a weight of 120 g/m 2 and consisted of polyester/cotton (50/50).
  • the first inner fabric, AK-01 has a load of active charcoal of 200 g/m 2 .
  • the second inner fabric, AK-02 has a load of 100 g/m 2 active charcoal.
  • the breakthrough is measured by means of a permeation test, the Methyl Red method with mustard gas.
  • a sample is placed on top of a glass beaker that is filled with a methyl red solution. Drops of 1 ⁇ l mustard gas are placed at the top of the test sample. Everything is sealed so that the mustard gas cannot evaporate.
  • the colour change of the Methyl Red reveals if there is breakthrough of the mustard gas through the sample. It is tested for 24 hours. Temperature is kept at 20 °C, the humidity is ambient humidity. If there is no breakthrough after 24 hours, a sufficient resistance is assumed.
  • Table 2 shows the results for breakthrough after 24 hours, and this for the seam type assembly seam.
  • X in the Table means that this type of thread in combination with this type of inner fabric does not have breakthrough of mustard gas after 24 hours.
  • Table 2 Thread type Inner fabric AK-01 Inner fabric AK-02 G-01 G-02 X X G-03 X X G-04 X X
  • Table 3 shows the results for breakthrough after 24 hours, and this for the seam type sewn seam.
  • X in the Table means that this type of thread in combination with this type of inner fabric does not have breakthrough of mustard gas after 24 hours.
  • Table 3 Thread type Inner fabric AK-01 Inner fabric AK-02 G-01 G-02 G-03 X G-04 X X
  • Table 4 shows the results for breakthrough after 24 hours, and this for stitching.
  • X in the Table means that this type of thread in combination with this type of inner fabric does not have breakthrough of mustard gas after 24 hours.
  • Table 4 Thread type Inner fabric AK-01 Inner fabric AK-02 G-01 G-02 G-03 G-04 X
  • Thread G-03 also absorbs oil drop number 4, but after a much longer period. Thread G-04 does not absorb oil drop number 4.
  • Table 5 shows the speed of the wicking behaviour of oil number 4 in the different threads.
  • Table 5 Sewing thread no. Basic material Absorption of oil drop Wicking speed G-01 Polyester/cotton (50/50), 60 tex immediately 2.1 meter/h G-02 Polyester/cotton (50/50), 60 tex immediately 0.6 meter/h G-03 Polyester/cotton (50/50), 60 tex after 10 minutes 0.001 meter/h G-04 Polyester/cotton (50/50), 60 tex > 1 hour ⁇ 0.001 meter/h
  • thread type G-04 exhibited no absorption and wicking behaviour. This ensures that there is no breakthrough of chemical and/or biological agents through the seam of the CBRN clothing.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP13153998.3A 2012-02-06 2013-02-05 Coutures imperméables pour les vêtements perméable cbrn Active EP2623164B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2012/0071A BE1019932A5 (nl) 2012-02-06 2012-02-06 Ondoordringbare naden voor permeabele cbrn kleding.

Publications (2)

Publication Number Publication Date
EP2623164A1 true EP2623164A1 (fr) 2013-08-07
EP2623164B1 EP2623164B1 (fr) 2016-11-02

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EP13153998.3A Active EP2623164B1 (fr) 2012-02-06 2013-02-05 Coutures imperméables pour les vêtements perméable cbrn

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EP (1) EP2623164B1 (fr)
BE (1) BE1019932A5 (fr)
DK (1) DK2623164T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1026462B1 (nl) 2018-12-24 2020-02-03 Concordia Textiles Nv Bedrukbaar weefsel voor multifunctionele bescherming

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3341995A1 (de) * 1982-11-24 1984-05-24 Hasso von 4000 Düsseldorf Blücher Garn mit spezifischen eigenschaften
US5626947A (en) * 1992-05-29 1997-05-06 E. I. Du Pont De Nemours And Company Composite chemical barrier fabric for protective garments
US6691326B2 (en) 2001-06-19 2004-02-17 Texplorer Gmbh Garment for protection against chemical and/or biological substances
WO2006114122A1 (fr) 2005-04-28 2006-11-02 BLüCHER GMBH Article vestimentaire textile destine au pied et comprenant une fonction de protection contre nbc
EP1725127A2 (fr) 2003-12-06 2006-11-29 Texplorer GmbH Vetement de protection du bas de la jambe
US20110123757A1 (en) * 2009-11-20 2011-05-26 Warwick Mills Inc. Breathable chembio protection fabric with carbon nanotube physical pathogen barrier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3341995A1 (de) * 1982-11-24 1984-05-24 Hasso von 4000 Düsseldorf Blücher Garn mit spezifischen eigenschaften
US5626947A (en) * 1992-05-29 1997-05-06 E. I. Du Pont De Nemours And Company Composite chemical barrier fabric for protective garments
US6691326B2 (en) 2001-06-19 2004-02-17 Texplorer Gmbh Garment for protection against chemical and/or biological substances
EP1725127A2 (fr) 2003-12-06 2006-11-29 Texplorer GmbH Vetement de protection du bas de la jambe
WO2006114122A1 (fr) 2005-04-28 2006-11-02 BLüCHER GMBH Article vestimentaire textile destine au pied et comprenant une fonction de protection contre nbc
US20110123757A1 (en) * 2009-11-20 2011-05-26 Warwick Mills Inc. Breathable chembio protection fabric with carbon nanotube physical pathogen barrier

Also Published As

Publication number Publication date
DK2623164T3 (en) 2017-01-30
EP2623164B1 (fr) 2016-11-02
BE1019932A5 (nl) 2013-02-05

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