EP0659550A1 - Gas-impermeable, chemical-resistant protective clothing - Google Patents

Gas-impermeable, chemical-resistant protective clothing Download PDF

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Publication number
EP0659550A1
EP0659550A1 EP94116741A EP94116741A EP0659550A1 EP 0659550 A1 EP0659550 A1 EP 0659550A1 EP 94116741 A EP94116741 A EP 94116741A EP 94116741 A EP94116741 A EP 94116741A EP 0659550 A1 EP0659550 A1 EP 0659550A1
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EP
European Patent Office
Prior art keywords
fleece
fabric
film
protective suit
layer
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Granted
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EP94116741A
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German (de)
French (fr)
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EP0659550B1 (en
Inventor
Wilfried Hoffmann
Günter Von Kopp
Susanne Rintelen
Stefan Dr. Zloczysti
Eugen Gutsche
Robert Schmitt
Nang Dinh-Van
Markus Weber
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Auergesellschaft GmbH
MGF Gutsche GmbH and Co KG
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Auergesellschaft GmbH
MGF Gutsche GmbH and Co KG
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/006—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes against contamination from chemicals, toxic or hostile environments; ABC suits
    • 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

Definitions

  • the invention relates to a gas-impermeable, chemical-resistant protective suit, which is made from a film-coated fleece.
  • the fabric of the protective suits is impregnated or impregnated with liquid-repellent substances.
  • Other materials that have a protective function have different polymer outer layers.
  • Protective suits are also known, the outer sides of which are rubberized.
  • a protective suit coated with butyl rubber is described in DE-OS-35 02 300.
  • a suit material which consists of several layers.
  • This material consists of a polypropylene fabric, on the one hand a coating of ethylene vinyl alcohol / nylon / polyethylene and on the other hand a coating of polyvinylidene chloride / ethylene vinyl acetate / polyethylene is applied.
  • the object of the present invention was therefore to provide a hermetically sealed protective suit which avoids the disadvantages mentioned above.
  • a protective suit made of a film-coated nonwoven is made available, in which the nonwoven is reinforced with fabric or knitted fabric, consists of polyester, polyamide, aramid or polypropylene microfibers and is capillary-active on the body side of the wearer, and wherein the film coating consists of at least five layers in a composite.
  • the polyester, polyamide, aramid or polypropylene fabrics or knits have a basis weight of 30 to 300 g / m2, preferably 80 to 160 g / m2.
  • a needle punched fleece is preferably used which has a weight per unit area of 30 to 300 g / m2, preferably 80 to 160 g / m2.
  • the individual fibers contained in the fleece have a fineness structure of 0.1 to 30 dtex.
  • the woven or knit-reinforced nonwoven is produced from the woven or knitted fabric and the individual fibers by methods known per se by means of lamination, thermal calendering or needling. Binder-free bonded nonwovens are preferred by needling.
  • the same polymer is preferably used for the woven or knitted fabric and the microfibers.
  • Polyester is particularly preferred as the nonwoven material.
  • the fleece 10 shows the schematic structure of the fleece 10 used according to the invention.
  • the fleece 10 consists of the fleece layer 1 and the composite film 11.
  • the fleece layer 1 contains a fabric reinforcement 2.
  • An inner polyethylene layer 7 is applied to the fleece layer 1, followed by an adhesive layer 6 , an EVOH layer 5, a further adhesive layer 4 and the outer polyethylene layer 3.
  • the polyethylene layer 3 faces the outside 9 of the protective suit, while the fleece layer 1 forms the body side 8 facing the body of the wearer.
  • the fleece used according to the invention has a high water absorption capacity.
  • the fleece is capillary active and changed its structure does not absorb water. There is neither swelling nor softening of the fleece.
  • the water absorption capacity was determined according to DIN 53923 and was at least 150%.
  • the fleece can be welded by high frequency. Not only is the film structure welded, but also the fleece itself. The usual effects of burning or melting away of the fleece are not observed.
  • halogen-free materials ensures that protective suits can be disposed of safely, for example by burning them.
  • protective suits according to the invention have excellent mechanical strength.
  • VFDB guideline 0801 VFDB: Association for the Promotion of German Fire Protection
  • protective suits should have a tensile strength of at least 600 N in warp and weft.
  • the protective suit according to the invention has so far met this directive as the first suit.
  • Table 1 Tear strength according to VFDB in N Direction of tearing Tensile strength standard > 600 N. Chain 620 N Shot 800 N
  • the mechanical strength of the surface fabric is higher than the adhesive strength during high-frequency welding of the film-coated nonwoven. Therefore, the material is preferably connected to one another by sewing to manufacture the protective suits.
  • the techniques of seam guidance and formation are known per se.
  • the seams can be covered with a possibly multi-layer masking tape made of film material, which can possibly be identical to that of the suit material, in order to achieve absolute gas tightness.
  • Parts of the protective suits according to the invention which are particularly mechanically stressed are preferably produced from those film-coated nonwovens in which the film coating is applied twice to the nonwoven.
  • Such heavily used areas can be found in the area of the chest, upper arms, under the armpits, on the thighs and between the legs of the suit.
  • a fleece is used, which has the film coating arranged two above one another.
  • the protective suits according to the invention also have excellent resistance to a number of frequently used chemicals.
  • the durability parameters are given in Table 2.
  • Table 2 Results of permeation measurements according to VFDB guideline 0801 chemical Breakthrough (min) acetone > 240 Acetonitrile > 240 Acetyl chloride > 240 Ammonia (gas) > 240 Ammonia, aq.
  • a film-coated fleece was used, which has the following layer sequence in the film structure from the outside in: PE 3020 D 40 ⁇ m Adhesion promoter (PVA) 10 ⁇ m EVOH 15 ⁇ m Adhesion promoter (PVA) 10 ⁇ m PE 361 HF + 4% EVA 45 ⁇ m
  • This composite film which is produced by processes known per se, is bonded by conventional processes to a polyester fabric with a basis weight of 120 g / m 2 and a suspension of polyester microfibers with an average fine structure of the individual fibers of 15 dtex by means of thermal calendering treatment.
  • the film-coated nonwoven is tested for tear strength in accordance with VFDB guideline 0801. The results are shown in Table 1.
  • the water absorption capacity is measured according to DIN 53923. The value found is more than 150%.
  • the gas tightness of the complete suit was also measured.
  • the protective suit is inflated to 25 mbar with oil-free compressed air. After a calming period the overpressure was reduced from 3 min to 16 mbar (test pressure). The observed pressure drop is within the permissible range (permissible pressure drop according to VFDB guideline 0801: 2 mbar after 3 min).

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  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Laminated Bodies (AREA)
  • Manufacturing Of Multi-Layer Textile Fabrics (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

Gas-tight, chemically resistant protective clothing is made from a film-coated non-woven fabric (1) which is reinforced with woven or knitted fabric (2) made from polyester, polyamide, aramid or polypropylene microfibres, and is capillary active on the body side (8). The film coating (11) is a composite contg. at least 5 layers (3, 4, 5, 6, 7). Pref. fabric (1) is reinforced with woven or knitted fabric (2) made from polymer fibre yarn (polymers as above), and has a water absorption of more than 150%. Film coating (11) consists of layers of polyethylene (3), adhesive (4), EVOH (5), adhesive (6) and polyethylene (7) (from the outside to the inside), each layer having a thickness of 5-100mu . The PE layer (7) in contact with fabric (1) also contains 0.1-10% EVA. Fabric (1) may be coated with two superimposed layers of film (11).

Description

Die Erfindung betrifft einen gasundurchlässigen chemikalienbeständigen Schutzanzug, der aus einem folienbeschichteten Vlies gefertigt ist.The invention relates to a gas-impermeable, chemical-resistant protective suit, which is made from a film-coated fleece.

Bei bekannten Schutzanzüge, wie sie beispielsweise bei Chemieunfällen, Havarien, Sanierungsarbeiten usw. eingesetzt werden, wird das Gewebe der Schutzanzüge mit flüssigkeitsabweisenden Stoffen imprägniert oder getränkt. Andere Materialien, die eine Schutzfunktion ausüben, weisen unterschiedliche Polymer-Außenschichten auf.In known protective suits, such as those used in chemical accidents, accidents, renovation work, etc., the fabric of the protective suits is impregnated or impregnated with liquid-repellent substances. Other materials that have a protective function have different polymer outer layers.

Ferner sind Schutzanzüge bekannt, deren Außenseiten gummiert sind. Ein mit Butylkautschuk beschichteter Schutzanzug ist in der DE-OS-35 02 300 beschrieben.Protective suits are also known, the outer sides of which are rubberized. A protective suit coated with butyl rubber is described in DE-OS-35 02 300.

Diese gummierten Anzüge weisen ein hohes Gewicht auf und verursachen erhebliche Geräusche. Diese Eigenschaften der Anzüge empfindet der Träger als unangenehm.These rubberized suits are heavy and make a lot of noise. The wearer finds these properties of the suits uncomfortable.

Ferner haben die beschriebenen Anzüge in der Regel den Nachteil, daß sie nur gegen einige Chemikalien schützen, von anderen dagegen leicht angegriffen werden.Furthermore, the suits described generally have the disadvantage that they only protect against some chemicals, but are easily attacked by others.

In der US-PS-4,833,010 wird ein Anzugmaterial beschrieben, welches aus mehreren Schichten besteht. Dieses Material besteht aus einem Polypropylengewebe, auf welches zur einen Seite eine Beschichtung aus Ethylenvinylalkohol/Nylon/Polyethylen und zur anderen Seite eine Beschichtung aus Polyvinylidenchlorid/ Ethylenvinylacetat/Polyethylen aufgebracht ist.In US-PS-4,833,010 a suit material is described which consists of several layers. This material consists of a polypropylene fabric, on the one hand a coating of ethylene vinyl alcohol / nylon / polyethylene and on the other hand a coating of polyvinylidene chloride / ethylene vinyl acetate / polyethylene is applied.

Diese bekannten Folien-Schutzanzüge weisen ein Reihe erheblicher Nachteile auf. So schwitzt der Träger leicht in Schutzanzügen der bekannten Art, da sowohl die Innenseite als auch die Außenseite der Schutzanzüge von einer undurchlässigen Kunststoffschicht gebildet werden. Ferner ist durch den Einsatz halogenierter Polymere die Entsorgung solcher Anzüge wegen der Freisetzung giftiger und ätzender Gase problematisch.These known protective films have a number of significant disadvantages. So the wearer sweats easily in protective suits of the known type, since both the inside and the outside of the protective suits are formed by an impermeable plastic layer. Furthermore, the disposal of such suits is problematic due to the release of toxic and caustic gases through the use of halogenated polymers.

Zwar werden Schutzanzüge, insbesondere hermetisch abgeschlossene, nur kurzzeitig getragen, aber durch den gefahrbehafteten Einsatz ist der Träger einer außergewöhnlichen Situation (Streß) ausgesetzt. Dies führt regelmäßig zu erhöhten Körperfunktionen, welche insbesondere durch mehr Schweißabsonderungen als gewöhnlich gekennzeichnet sind. Das Klima innerhalb des Anzuges beeinflußt aber in hohem Maße die physische und insbesondere die psychische Verfassung des Trägers. Günstige Trageeigenschaften verbessern somit die Sicherheit des Trägers und das Ergebnis der von ihm zu bewältigenden Aufgabe.Protective suits, especially hermetically sealed ones, are only worn for a short time, but due to their hazardous use, the wearer is exposed to an unusual situation (stress). This regularly leads to increased bodily functions, which are characterized in particular by more sweating than usual. The climate inside the suit, however, influences the physical and especially the mental state of the wearer to a large extent. Favorable wearing properties thus improve the safety of the wearer and the result of the task to be accomplished by him.

Aufgabe der vorliegenden Erfindung war es daher, einen hermetisch abgeschlossenen Schutzanzug zur Verfügung zu stellen, welcher die oben genannten Nachteile vermeidet.The object of the present invention was therefore to provide a hermetically sealed protective suit which avoids the disadvantages mentioned above.

Diese Aufgabe wird dadurch gelöst, daß ein aus einem folienbeschichteten Vlies gefertigter Schutzanzug zur Verfügung gestellt wird, bei dem das Vlies gewebe- oder gewirkverstärkt ist, aus Polyester-, Polyamid-, Aramid- oder Polypropylenmikrofasern besteht und zur Körperseite des Trägers kapillaraktiv ist, und wobei die Folienbeschichtung aus mindestens fünf Schichten in einem Verbund besteht.This object is achieved in that a protective suit made of a film-coated nonwoven is made available, in which the nonwoven is reinforced with fabric or knitted fabric, consists of polyester, polyamide, aramid or polypropylene microfibers and is capillary-active on the body side of the wearer, and wherein the film coating consists of at least five layers in a composite.

Weitere vorteilhafte Ausgestaltungen des erfindungsgemäßen Schutzanzuges sind in den abhängigen Schutzansprüchen wiedergegeben.Further advantageous refinements of the protective suit according to the invention are given in the dependent protective claims.

Die Polyester-, Polyamid-, Aramid- oder Polypropylengewebe oder -gewirke haben ein Flächengewicht von 30 bis 300 g/m², vorzugsweise 80 bis 160 g/m².The polyester, polyamide, aramid or polypropylene fabrics or knits have a basis weight of 30 to 300 g / m², preferably 80 to 160 g / m².

Als Vlies wird vorzugsweise ein Nadelvlies verwendet, welches ein Flächengewicht von 30 bis 300 g/m², vorzugsweise von 80 bis 160 g/m², aufweist.A needle punched fleece is preferably used which has a weight per unit area of 30 to 300 g / m², preferably 80 to 160 g / m².

Die im Vlies enthaltenen Einzelfasern weisen eine Feinheitsstruktur von 0,1 bis 30 dtex aus.The individual fibers contained in the fleece have a fineness structure of 0.1 to 30 dtex.

Das gewebe- oder gewirkverstärkte Vlies wird nach an sich bekannten Methoden mittels Kaschierung, thermischer Kalandrierung oder Vernadelung aus dem Gewebe bzw. Gewirk und den Einzelfasern hergestellt. Bevorzugt sind durch Vernadelung bindemittelfreie verbundene Vliese.The woven or knit-reinforced nonwoven is produced from the woven or knitted fabric and the individual fibers by methods known per se by means of lamination, thermal calendering or needling. Binder-free bonded nonwovens are preferred by needling.

Bevorzugterweise wird das gleiche Polymer für das Gewebe oder Gewirk und die Mikrofasern verwendet.The same polymer is preferably used for the woven or knitted fabric and the microfibers.

Besonders bevorzugt als Vliesmaterial sind Polyester.Polyester is particularly preferred as the nonwoven material.

Fig. 1 zeigt den schematischen Aufbau des erfindungsgemäß eingesetzten Vlieses 10. Das Vlies 10 besteht aus der Vliesschicht 1 und der Verbundfolie 11. Die Vliesschicht 1 enthält eine Gewebeverstärkung 2. Auf die Vliesschicht 1 ist eine innere Polyethylenschicht 7 aufgebracht, gefolgt von einer Klebeschicht 6, einer EVOH-Schicht 5, einer weiteren Klebeschicht 4 und der äußeren Polyethylenschicht 3. Die Polyethylenschicht 3 weist zur Außenseite 9 des Schutzanzuges, während die Vliesschicht 1 die zum Körper des Trägers gerichtete Körperseite 8 bildet.1 shows the schematic structure of the fleece 10 used according to the invention. The fleece 10 consists of the fleece layer 1 and the composite film 11. The fleece layer 1 contains a fabric reinforcement 2. An inner polyethylene layer 7 is applied to the fleece layer 1, followed by an adhesive layer 6 , an EVOH layer 5, a further adhesive layer 4 and the outer polyethylene layer 3. The polyethylene layer 3 faces the outside 9 of the protective suit, while the fleece layer 1 forms the body side 8 facing the body of the wearer.

Es wurde überraschenderweise gefunden, daß das erfindungsgemäß eingesetzte Vlies ein großes Wasseraufnahmevermögen aufweist. Das Vlies ist kapillaraktiv und verändert bei der Wasseraufnahme seine Struktur nicht. Es findet weder ein Aufquellen noch ein Aufweichen des Vlieses statt.It has surprisingly been found that the fleece used according to the invention has a high water absorption capacity. The fleece is capillary active and changed its structure does not absorb water. There is neither swelling nor softening of the fleece.

Dieser physikalische Vorgang der Absorption von Wasser ist leicht reversibel, so daß der Anzug durch Trocknen, gegebenenfalls in einem Umlufttrockenschrank, wieder in den ursprünglichen Zustand versetzt werden kann, ohne das Wasseraufnahmevermögen zu beeinträchtigen.This physical process of absorbing water is easily reversible, so that the suit can be restored to its original state by drying, possibly in a forced-air drying cabinet, without impairing the water absorption capacity.

Das Wasseraufnahmevermögen wurde nach der DIN 53923 bestimmt und betrug mindestens 150%.The water absorption capacity was determined according to DIN 53923 and was at least 150%.

Überraschenderweise wurde ferner gefunden, daß das Vlies hochfrequenzschweißbar ist. Dabei wird nicht nur der Folienaufbau verschweißt, sondern auch das Vlies selbst. Die üblicherweise auftretenden Effekte des Verbrennens oder Wegschmelzens des Vlieses werden nicht beobachtet.Surprisingly, it was also found that the fleece can be welded by high frequency. Not only is the film structure welded, but also the fleece itself. The usual effects of burning or melting away of the fleece are not observed.

Diese Eigenschaft hat erhebliche Konsequenzen für die Fertigung von Schutzanzügen. So lassen sich beispielsweise problemlos Sichtscheiben und gasdichte Reißverschlüsse in den Anzug einarbeiten.This property has significant consequences for the production of protective suits. For example, viewing windows and gas-tight zippers can be easily incorporated into the suit.

Durch die Verwendung halogenfreier Materialien ist die gefahrlose Entsorgung der Schutzanzüge bespielsweise durch Verbrennen gewährleistet.The use of halogen-free materials ensures that protective suits can be disposed of safely, for example by burning them.

Es wurde ferner gefunden, daß die erfindungsgemäßen Schutzanzüge eine hervorragende mechanische Festigkeit aufweisen. Nach der VFDB-Richtlinie 0801 (VFDB: Verein zur Förderung des Deutschen Brandschutzes) sollen Schutzanzüge eine Reißfestigkeit von mindestens 600 N in Kette und Schuß aufweisen. Der erfindungsgemäße Schutzanzug erfüllt bisher als erster Anzug diese Richtlinie. Die Werte sind in Tabelle 1 wiedergegeben. Tabelle 1 Reißfestigkeit nach VFDB in N Reißrichtung Reißfestigkeit Norm > 600 N Kette 620 N Schuß 800 N It was also found that the protective suits according to the invention have excellent mechanical strength. According to VFDB guideline 0801 (VFDB: Association for the Promotion of German Fire Protection), protective suits should have a tensile strength of at least 600 N in warp and weft. The protective suit according to the invention has so far met this directive as the first suit. The values are shown in Table 1. Table 1 Tear strength according to VFDB in N Direction of tearing Tensile strength standard > 600 N. Chain 620 N Shot 800 N

Die mechanische Festigkeit des Flächenstoffes ist höher als die Haftfestigkeit bei der Hochfrequenzverschweißung des folienbeschichteten Vlieses. Daher wird zur Fertigung der Schutzanzüge das Material vorzugsweise durch Nähen miteinander verbunden. Die Techniken der Nahtführung und -bildung sind an sich bekannt. Zusätzlich können die Nähte mit einem gegebenenfalls mehrschichtigen Abdeckband aus Folienmaterial, welches gegebenenfalls identisch mit dem des Anzugmaterials sein kann, abgedeckt werden, um absolute Gasdichtheit zu erzielen.The mechanical strength of the surface fabric is higher than the adhesive strength during high-frequency welding of the film-coated nonwoven. Therefore, the material is preferably connected to one another by sewing to manufacture the protective suits. The techniques of seam guidance and formation are known per se. In addition, the seams can be covered with a possibly multi-layer masking tape made of film material, which can possibly be identical to that of the suit material, in order to achieve absolute gas tightness.

Mechanisch besonders beanspruchte Teile der erfindungsgemäßen Schutzanzüge werden vorzugsweise aus solchen folienbeschichteten Vliesen hergestellt, bei denen die Folienbeschichtung zweimal übereinander auf das Vlies aufgebracht wird.Parts of the protective suits according to the invention which are particularly mechanically stressed are preferably produced from those film-coated nonwovens in which the film coating is applied twice to the nonwoven.

Solche stark beanspruchten Stellen finden sich im Bereich der Brust, der Oberarme, unter den Achseln, an den Oberschenkeln und zwischen den Beinen des Anzuges. An diesen oder anderen gefährdeten Stellen wird ein Vlies verwendet, welches die Folienbeschichtung zweimal übereinander angeordnet aufweist.Such heavily used areas can be found in the area of the chest, upper arms, under the armpits, on the thighs and between the legs of the suit. At these or other vulnerable points, a fleece is used, which has the film coating arranged two above one another.

Dies führt vorteilhafterweise nur zu einer geringen Gewichtszunahme des gesamten Anzuges und erhöht dennoch die Sicherheit des Trägers erheblich.This advantageously only leads to a slight weight gain of the entire suit and nevertheless significantly increases the safety of the wearer.

Die erfindungsgemäßen Schutzanzüge weisen ferner eine hervorragende Beständigkeit gegen eine Reihe von häufig verwendeten Chemikalien auf. Die Beständigkeitsparameter sind in Tabelle 2 angegeben. Tabelle 2 Ergebnisse der Permeationsmessungen nach VFDB-Richtlinie 0801 Chemikalie Durchbruch (min) Aceton > 240 Acetonitril > 240 Acetylchlorid > 240 Ammoniak (Gas) > 240 Ammoniak, wässr. 25% > 240 Anilin > 240 Chlor (Gas) > 240 1,2 Dichlorethan > 240 Dichlormethan > 240 N,N-Dimethylformamid > 240 Ethylacetat > 240 n-Hexan > 240 Kohlendisulfid > 240 Methanol > 240 Methylacetat > 240 Natriumhydroxid > 240 Nitrobenzol > 240 Nitromethan > 240 n-Octan > 240 Perchlorethylen > 240 Pyridin > 240 Salpetersäure (65%) > 240 Salzsäure (37%) > 240 Schwefelsäure (96%) > 240 Tetrahydrofuran > 240 Toluol > 240 Triethylamin 182 The protective suits according to the invention also have excellent resistance to a number of frequently used chemicals. The durability parameters are given in Table 2. Table 2 Results of permeation measurements according to VFDB guideline 0801 chemical Breakthrough (min) acetone > 240 Acetonitrile > 240 Acetyl chloride > 240 Ammonia (gas) > 240 Ammonia, aq. 25% > 240 aniline > 240 Chlorine (gas) > 240 1,2 dichloroethane > 240 Dichloromethane > 240 N, N-dimethylformamide > 240 Ethyl acetate > 240 n-hexane > 240 Carbon disulfide > 240 Methanol > 240 Methyl acetate > 240 Sodium hydroxide > 240 Nitrobenzene > 240 Nitromethane > 240 n-octane > 240 Perchlorethylene > 240 Pyridine > 240 Nitric acid (65%) > 240 Hydrochloric acid (37%) > 240 Sulfuric acid (96%) > 240 Tetrahydrofuran > 240 toluene > 240 Triethylamine 182

Das folgende Beispiel soll die Erfindung erläutern.The following example is intended to explain the invention.

Beispiel 1example 1

Es wurde ein folienbeschichtetes Vlies verwendet, das im Folienaufbau folgende Schichtenfolge von außen nach innen aufweist: PE 3020 D 40 µm Haftvermittler (PVA) 10 µm EVOH 15 µm Haftvermittler (PVA) 10 µm PE 361 HF + 4 % EVA 45 µm A film-coated fleece was used, which has the following layer sequence in the film structure from the outside in: PE 3020 D 40 µm Adhesion promoter (PVA) 10 µm EVOH 15 µm Adhesion promoter (PVA) 10 µm PE 361 HF + 4% EVA 45 µm

Diese nach an sich bekannten Verfahren hergestellte Verbundfolie wird nach üblichen Verfahren mit einem Polyestergewebe mit einem Flächengewicht von 120 g/m² und einer Suspension von Polyestermikrofasern mit einer mittleren Feinstruktur der Einzelfasern von 15 dtex mittels thermischer Kalandrierbehandlung verbunden.This composite film, which is produced by processes known per se, is bonded by conventional processes to a polyester fabric with a basis weight of 120 g / m 2 and a suspension of polyester microfibers with an average fine structure of the individual fibers of 15 dtex by means of thermal calendering treatment.

Das folienbeschichtete Vlies wird nach der VFDB-Richtlinie 0801 auf die Reißfestigkeit hin untersucht. Die Ergebnisse sind in Tabelle 1 dargestellt.The film-coated nonwoven is tested for tear strength in accordance with VFDB guideline 0801. The results are shown in Table 1.

Die Untersuchung des Permeationsvermögens bei Einwirkung verschiedener Chemikalien erfolgt ebenfalls nach der VFDB-Richtlinie 0801. Diese Versuchsergebnisse sind in Tabelle 2 zusammengestellt.The permeability under the action of various chemicals is also investigated in accordance with VFDB guideline 0801. These test results are summarized in Table 2.

Die Messung des Wasseraufnahmevermögens erfolgt nach der DIN 53923. Der gefundene Wert beträgt mehr als 150%.The water absorption capacity is measured according to DIN 53923. The value found is more than 150%.

Ferner wurde die Gasdichtheit der kompletten Anzuges gemessen. Dazu wird der Schutzanzug mit ölfreier Druckluft auf 25 mbar aufgeblasen. Nach einer Druckberuhigungszeit von 3 min wurde der Überdruck auf 16 mbar (Prüfdruck) abgesenkt. Der beobachtete Druckabfall liegt im zulässigen Bereich (zulässiger Druckabfall nach der VFDB-Richtlinie 0801: 2 mbar nach 3 min).The gas tightness of the complete suit was also measured. For this purpose, the protective suit is inflated to 25 mbar with oil-free compressed air. After a calming period the overpressure was reduced from 3 min to 16 mbar (test pressure). The observed pressure drop is within the permissible range (permissible pressure drop according to VFDB guideline 0801: 2 mbar after 3 min).

BezugzeichenlisteReference list

11
VliesschichtFleece layer
22nd
GewebeverstärkungTissue reinforcement
33rd
äußere Polyethylenschichtouter polyethylene layer
44th
KlebeschichtAdhesive layer
55
EVOH-SchichtEVOH layer
66
KlebeschichtAdhesive layer
77
innere Polyethylenschichtinner polyethylene layer
88th
KörperseiteBody side
99
AußenseiteOutside
1010th
folienbeschichtetes Vliesfoil-coated fleece
1111
VerbundfolieComposite film

Claims (7)

Gasundurchlässiger chemikalienbeständiger Schutzanzug, gefertigt aus einem folienbeschichteten Vlies, dadurch gekennzeichnet, daß das Vlies (1) gewebe- oder gewirkverstärkt (2) ist, aus Polyester-, Polyamid-, Aramid- oder Polypropylenmikrofasern besteht und zur Körperseite (8) des Trägers kapillaraktiv ist, und daß die Folienbeschichtung (11) aus mindestens fünf Schichten (3,4,5,6,7) in einem Verbund besteht.Gas-impermeable, chemical-resistant protective suit, made from a film-coated fleece, characterized in that the fleece (1) is reinforced with fabric or knitted fabric (2), consists of polyester, polyamide, aramid or polypropylene microfibers and is capillary-active to the body side (8) of the wearer , and that the film coating (11) consists of at least five layers (3,4,5,6,7) in a composite. Schutzanzug nach mindestens einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß das Vlies (1) mit einem Gewebe oder Gewirk (2) aus Polyester-, Polyamid-, Aramid- oder Polypropylengarn verstärkt ist.Protective suit according to at least one of the preceding claims, characterized in that the fleece (1) is reinforced with a woven or knitted fabric (2) made of polyester, polyamide, aramid or polypropylene yarn. Schutzanzug nach mindestens einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß das Vlies (10) ein Wasseraufnahmevermögen von mehr als 150 % aufweist.Protective suit according to at least one of the preceding claims, characterized in that the fleece (10) has a water absorption capacity of more than 150%. Schutzanzug nach mindestens einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Folienbeschichtung (11) in der Reihenfolge von der Außenseite zur Innenseite hin aus je einer Polyethylenschicht (3), einem Haftvermittler (4), einer EVOH-Schicht (5), einem Haftvermittler (6) und einer Polyethylenschicht (7) besteht.Protective suit according to at least one of the preceding claims, characterized in that the film coating (11) in the order from the outside to the inside each consists of a polyethylene layer (3), an adhesion promoter (4), an EVOH layer (5), an adhesion promoter (6) and a polyethylene layer (7). Schutzanzug nach mindestens einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die jeweiligen Schichten (3,4,5,6,7) der Verbundfolie (11) eine Stärke von 5 µm bis 100 µm aufweisen.Protective suit according to at least one of the preceding claims, characterized in that the respective layers (3,4,5,6,7) of the composite film (11) have a thickness of 5 µm to 100 µm. Schutzanzug nach mindestens einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die auf dem Vlies (1) liegende Polyethylenschicht (7) einen Zusatz von 0,1 bis 10 % EVA enthält.Protective suit according to at least one of the preceding claims, characterized in that the polyethylene layer (7) lying on the fleece (1) contains an addition of 0.1 to 10% EVA. Schutzanzug nach mindestens einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Folienbeschichtung (11) zweimal übereinander auf das Vlies (1) aufgebracht ist.Protective suit according to at least one of the preceding claims, characterized in that the film coating (11) is applied twice over the fleece (1).
EP94116741A 1993-10-25 1994-10-24 Gas-impermeable, chemical-resistant protective clothing Expired - Lifetime EP0659550B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4336788A DE4336788C2 (en) 1993-10-25 1993-10-25 Gas-impermeable chemical-resistant protective suit
DE4336788 1993-10-25

Publications (2)

Publication Number Publication Date
EP0659550A1 true EP0659550A1 (en) 1995-06-28
EP0659550B1 EP0659550B1 (en) 2001-05-30

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Application Number Title Priority Date Filing Date
EP94116741A Expired - Lifetime EP0659550B1 (en) 1993-10-25 1994-10-24 Gas-impermeable, chemical-resistant protective clothing

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EP (1) EP0659550B1 (en)
AT (1) ATE201630T1 (en)
DE (2) DE4336788C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107645990A (en) * 2015-03-24 2018-01-30 安塞尔有限公司 Protective composite

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009015514U1 (en) 2009-11-11 2010-02-18 Sächsisches Textilforschungsinstitut e.V. Multilayer non-woven protective suit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB783558A (en) * 1954-09-30 1957-09-25 Kimberly Clark Co Absorbent, laminated, fibrous sheet material
WO1983003205A1 (en) * 1982-03-12 1983-09-29 Henning Risvig Henriksen Protective garment
EP0294178A2 (en) * 1987-06-02 1988-12-07 E.I. Du Pont De Nemours And Company Fabric for protective garments
WO1989011392A1 (en) * 1988-05-16 1989-11-30 Bodigard Technologies, Inc. Multilayer film for chemical protective clothing
EP0360208A2 (en) * 1988-09-19 1990-03-28 E.I. Du Pont De Nemours And Company Composite chemical barrier fabric
EP0434572A1 (en) * 1989-12-22 1991-06-26 Manufacture De Vetements Paul Boye S.A. Material for the manufacture of protective equipment against nuclear, biological and chemical attacks

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB783558A (en) * 1954-09-30 1957-09-25 Kimberly Clark Co Absorbent, laminated, fibrous sheet material
WO1983003205A1 (en) * 1982-03-12 1983-09-29 Henning Risvig Henriksen Protective garment
EP0294178A2 (en) * 1987-06-02 1988-12-07 E.I. Du Pont De Nemours And Company Fabric for protective garments
WO1989011392A1 (en) * 1988-05-16 1989-11-30 Bodigard Technologies, Inc. Multilayer film for chemical protective clothing
EP0360208A2 (en) * 1988-09-19 1990-03-28 E.I. Du Pont De Nemours And Company Composite chemical barrier fabric
EP0434572A1 (en) * 1989-12-22 1991-06-26 Manufacture De Vetements Paul Boye S.A. Material for the manufacture of protective equipment against nuclear, biological and chemical attacks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107645990A (en) * 2015-03-24 2018-01-30 安塞尔有限公司 Protective composite

Also Published As

Publication number Publication date
DE4336788C2 (en) 1996-01-25
EP0659550B1 (en) 2001-05-30
ATE201630T1 (en) 2001-06-15
DE4336788A1 (en) 1995-05-11
DE59409766D1 (en) 2001-07-05

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