DE19849395A1 - Protective material against chemical poisons, used e.g. for protective clothing comprises air-permeable textile with granular adsorbent attached by mixture of plastic dispersion and hot-melt adhesive powder - Google Patents

Protective material against chemical poisons, used e.g. for protective clothing comprises air-permeable textile with granular adsorbent attached by mixture of plastic dispersion and hot-melt adhesive powder

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Publication number
DE19849395A1
DE19849395A1 DE1998149395 DE19849395A DE19849395A1 DE 19849395 A1 DE19849395 A1 DE 19849395A1 DE 1998149395 DE1998149395 DE 1998149395 DE 19849395 A DE19849395 A DE 19849395A DE 19849395 A1 DE19849395 A1 DE 19849395A1
Authority
DE
Germany
Prior art keywords
protective material
against chemical
material against
chemical poisons
adhesive
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.)
Withdrawn
Application number
DE1998149395
Other languages
German (de)
Inventor
Ernest De Ruiter
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Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE1998149395 priority Critical patent/DE19849395A1/en
Publication of DE19849395A1 publication Critical patent/DE19849395A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28016—Particle form
    • B01J20/28019—Spherical, ellipsoidal or cylindrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28026—Particles within, immobilised, dispersed, entrapped in or on a matrix, e.g. a resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/2803—Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Manufacturing Of Multi-Layer Textile Fabrics (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

A mixture of a plastic dispersion and a finely divided hot melt adhesive is used as the adhesive in a protective material against chemical poisons, consisting of granular adsorbents attached to an air-permeable textile support with the aid of small heaps of adhesive printed on the support as dots.

Description

Permeable Schutzanzüge gegen chemische Gifte verfügen über eine Adsorptionsschicht, die praktisch immer Aktivkohle enthält. Eine bekannte Adsorptionsschicht besteht aus einem luftdurchlässigen, textilen Träger, auf welchem Häufchen eines hochviskosen maskierten Isocyanats aufgedruckt werden, an denen körnige Adsorbentien zum Haften gebracht werden. Wichtig ist dabei eine hohe Anfangshaftung, damit die aufgestreuten Adsorbentien kleben bleiben, wo sie auftreffen. Das hatte zur Folge, daß billigere und leichter zu verarbeitende Dispersionskleber bisher nicht eingesetzt werden konnten.Permeable protective suits against chemical poisons have an adsorption layer that practically always contains activated carbon. A known adsorption layer consists of a air-permeable, textile carrier, on which heap of a highly viscous masked Isocyanates are printed on which granular adsorbents are adhered. It is important to have a high initial adhesion so that the scattered adsorbents stick stay where they hit. As a result, cheaper and easier to process Dispersion adhesives could not previously be used.

Es war Ziel der vorliegenden Erfindung, neue brauchbare Klebersysteme zu finden.The aim of the present invention was to find new usable adhesive systems.

Die Aufgabe wurde nach den Merkmalen des Anspruchs 1 gelöst. Es wurde gefunden, daß eine Mischung aus einer Dispersion eines klebrigen Kunststoffes, beispielsweise auf Basis von Butylacrylat, und fein vermahlenem Schmelzkleber sowohl die erforderliche Anfangshaftung wie auch eine sehr gute Endhaftung ermöglicht. Der hohe Feststoffgehalt - er sollte mindestens 40%, vorzugsweise 40-60%, betragen - macht es möglich, mit einer Rotationsdruckschablone halbkugelförmige Kleberhäufchen zu drucken, so daß eine seitlich Anbindung der körnigen, vorzugsweise kugelförmigen Adsorbentien möglich ist. Letzeres ist wichtig, um die Zwischenräume zwischen den Kleberhäufchen abzudecken. Im Festkörperanteil sollte das Verhältnis klebriger Kunststoff/Schmelzkleber mindestens 1 : 1, vorzugsweise aber 1 : 2 und selbst 1 : 3, betragen. Damit der Schmelzkleber richtig zum Zuge kommt, ist, je nach Schmelzkleber, eine Temperatur von 150-200°C erforderlich. Es ist vorteilhaft, nach einer ersten Trocknung bei ca. 160°C die mit Adsorbentien beladene Bahn über einen Thermokalander bzw. eine Heißkaschiermaschine bei 160°C zu fahren, weil der gleichzeitig angewandte Druck für eine optimale Verankerung der Teilchen sorgt. The object was achieved according to the features of claim 1. It was found that a Mixture of a dispersion of a sticky plastic, for example based on Butyl acrylate, and finely ground hotmelt both have the required initial tack also allows a very good final liability. The high solids content - it should at least 40%, preferably 40-60%, make it possible with a rotary printing stencil to print hemispherical piles of glue so that the granular, preferably spherical adsorbents is possible. The latter is important to the Cover gaps between the heaps of glue. In the solid state part that should Ratio of sticky plastic / hot melt adhesive at least 1: 1, but preferably 1: 2 and itself 1: 3. So that the hot melt adhesive really comes into play, depends on Hot melt adhesive, a temperature of 150-200 ° C required. It is beneficial to look for one first drying at approx. 160 ° C over a web loaded with adsorbents Thermal calender or a hot laminating machine to drive at 160 ° C because of the same time applied pressure ensures optimal anchoring of the particles.  

Für eine für Schutzanzüge bestimmte Adsorptionsschicht empfiehlt es sich, den textilen Träger mit 50-100 Kleberhäufchen pro cm2 zu bedrucken, wobei die Trockenauflage meist 20-50 g/m2 beträgt. Die körnigen bzw. kugelförmigen Adsorbentien können Teilchengrössen von 0,2-1,0 mm haben, vorzugsweise 0,3-0,8 mm und insbesondere 0,4-0,7 mm, mit Schwerpunkt um 0,5 mm. Grundsätzlich können bis zu 300 g Adsorbentien pro m2 aufgebracht werden (Kugelkohle). Es ist vorteilhaft, die Adsorbentien mit einem leichten textilen Flächengebilde (Vlies), welches mit etwas Schmelzkleber punktförmig beaufschlagt ist, abzudecken. Das Aufbringen der Abdeckung geschieht vorzugsweise im gleichen Arbeitsgang wie das Andrücken der Adsorbentien auf die Schmelzkleberhäufchen. Auf Grund des sehr hohen Festkörperanteils der Mischung aus Dispersion und Schmelzkleberpulver "steht" der Kleberpunkt sehr gut und hat die Form einer Halbkugel oder eines Kegels mit abgerundeter Spitze. Das ist sehr wichtig, denn nur so können sich die Adsorbentien seitlich um Kleberhäufchen anlagern und die Zwischenräume zwischen den Kleberhäufchen werden abgedeckt. Druckt man Kleberhäufchen mit 0,3-0,6 mm Durchmesser und 0,2-0,4 mm Höhe in einer Dichte von 100 Häufchen/cm2 und streut Aktivkohlekügelchen mit einem mittleren Durchmesser von 0,5 mm auf, so werden im Schnitt etwa 4 Kügelchen pro Kleberhäufchen fixiert, was zu einer vollflächigen Bedeckung mit 400 Kügelchen/cm2 führt.For an adsorption layer intended for protective suits, it is advisable to print the textile backing with 50-100 piles of adhesive per cm 2 , the dry layer usually being 20-50 g / m 2 . The granular or spherical adsorbents can have particle sizes of 0.2-1.0 mm, preferably 0.3-0.8 mm and in particular 0.4-0.7 mm, with a focus around 0.5 mm. In principle, up to 300 g adsorbents per m 2 can be applied (spherical carbon). It is advantageous to cover the adsorbents with a light textile fabric (fleece) which is punctiformly applied with a little hot melt adhesive. The cover is preferably applied in the same operation as the pressing of the adsorbents onto the hot-melt adhesive piles. Due to the very high solids content of the mixture of dispersion and hot-melt adhesive powder, the adhesive point "stands" very well and has the shape of a hemisphere or a cone with a rounded tip. This is very important because this is the only way that the adsorbents can accumulate around the side of the adhesive piles and the gaps between the adhesive piles are covered. If you print adhesive piles with a diameter of 0.3-0.6 mm and a height of 0.2-0.4 mm at a density of 100 piles / cm 2 and sprinkle with activated carbon pellets with an average diameter of 0.5 mm, the average fixed about 4 beads per heap of glue, which leads to full coverage with 400 beads / cm 2 .

Beispielexample

Herstellung der Klebermischung in folgender Reihenfolge:
250 g Acronal 500D (BASF)
230 g Wasser
350 g Platamid H106 PA < 80 µ m (ATOCHEM)
100 g M 740/1 (ATOCHEM)
Production of the adhesive mixture in the following order:
250 g Acronal 500D (BASF)
230 g water
350 g platamide H106 PA <80 µm (ATOCHEM)
100 g M 740/1 (ATOCHEM)

zusätzlich Verdicker:
10 g Ammoniak
10 g Wasser
10 g Nastrosol 250 HHR
40 g Wasser additional thickener:
10 g ammonia
10 g water
10 g Nastrosol 250 HHR
40 g water

Als Träger wurde ein ca. 100 g/m2 schweres BW-Gewebe gewählt, welches mit Hilfe einer 25 mesh Schablone mit obiger Klebermischung bedruckt wurde (Trockenauflage 41 g/m2). Danach wurde eine Kugelkohle (Hersteller Kureha, Japan) mit Durchmesser 0,56-0,63 mm aufgestreut und das Material bei 160°C getrocknet. Kohleauflage 280 g/m2, sehr gute regelmässige Belegung ohne Fehlstellen. Schließlich wurde die Kohleschicht mit einem leichten PA/PES Vlies (30 g/m2), welches mit Schmelzkleber bedruckt war (13 g/m2) und von der Fa. PERMESS (NL) stammte, durch ein Heißkaschierverfahren abgedeckt.A BW fabric weighing approximately 100 g / m 2 was selected as the carrier and was printed with the above adhesive mixture using a 25 mesh stencil (dry pad 41 g / m 2 ). A spherical carbon (manufacturer Kureha, Japan) with a diameter of 0.56-0.63 mm was then sprinkled on and the material was dried at 160.degree. Coal overlay 280 g / m 2 , very good regular occupancy without missing parts. Finally, the carbon layer was covered with a light PA / PES fleece (30 g / m 2 ), which was printed with hot-melt adhesive (13 g / m 2 ) and came from PERMESS (NL), by a hot lamination process.

Claims (7)

1. Schutzmaterial gegen chemische Gifte bestehend aus einem luftdurchlässigen textilen Träger, auf welchem mit Hilfe punktförmig aufgedruckter Kleberhäufchen körnige Adsorbentien haften, dadurch gekennzeichnet, daß der Kleber aus einer Mischung einer Kunststoffdispersion mit einem fein vermahlenen Schmelzkleber besteht.1. Protective material against chemical poisons consisting of an air-permeable textile carrier, on which granular adsorbents adhere with the help of punctually printed adhesive piles, characterized in that the adhesive consists of a mixture of a plastic dispersion with a finely ground hot-melt adhesive. 2. Schutzmaterial nach Anspruch 1, dadurch gekennzeichnet, daß bezogen auf Trockensubstanz, der Schmelzkleberanteil 50%, bevorzugterweise 67%-80%, beträgt.2. Protective material according to claim 1, characterized in that based on Dry substance, the hot melt adhesive content is 50%, preferably 67% -80%. 3. Schutzmaterial gegen chemische Gifte nach Anspruch 1 und/oder 2, dadurch gekenn­ zeichnet, daß die Kunststoffdispersion aus einem weichen, zur Klebrigkeit neigendem Kunststoff besteht.3. Protective material against chemical poisons according to claim 1 and / or 2, characterized is characterized by the fact that the plastic dispersion consists of a soft sticky material Plastic is made. 4. Schutzmaterial gegen chemische Gifte nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Kleber bereits im Naßzustand eine hohe Klebrigkeit besitzt.4. Protective material against chemical poisons according to one or more of the preceding Claims, characterized in that the adhesive has a high already in the wet state Has stickiness. 5. Schutzmaterial gegen chemische Gifte nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Kleber mit Hilfe einer Rotatations­ druckschablone in Form von halbkugelförmigen Häufchen gedruckt wird, deren Menge 50-100/cm2 und deren Durchmesser 0,3-0,6 mm bei einer Gesamtauflage von 20-60 g/m2 beträgt.5. Protective material against chemical poisons according to one or more of the preceding claims, characterized in that the adhesive is printed with the aid of a rotary printing stencil in the form of hemispherical piles, the amount 50-100 / cm 2 and the diameter 0.3-0, 6 mm with a total circulation of 20-60 g / m 2 . 6. Schutzmaterial gegen chemische Gifte nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die körnigen Adsorbentien Aktivkohlekörner oder Aktivkohlekügelchen mit Teilchengrößen von 0,2-1,0 mm, insbesondere 0,4-0,7 mm, sind.6. Protective material against chemical poisons according to one or more of the preceding Claims, characterized in that the granular adsorbents are activated carbon grains or activated carbon spheres with particle sizes of 0.2-1.0 mm, in particular 0.4-0.7 mm, are. 7. Schutzmaterial gegen chemische Gifte nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Adsorbentien durch ein leichtes, thermisch aufkaschiertes, textiles Material abgedeckt sind.7. Protective material against chemical poisons according to one or more of the preceding Claims, characterized in that the adsorbents by a light, thermal laminated, textile material are covered.
DE1998149395 1998-10-27 1998-10-27 Protective material against chemical poisons, used e.g. for protective clothing comprises air-permeable textile with granular adsorbent attached by mixture of plastic dispersion and hot-melt adhesive powder Withdrawn DE19849395A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1998149395 DE19849395A1 (en) 1998-10-27 1998-10-27 Protective material against chemical poisons, used e.g. for protective clothing comprises air-permeable textile with granular adsorbent attached by mixture of plastic dispersion and hot-melt adhesive powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1998149395 DE19849395A1 (en) 1998-10-27 1998-10-27 Protective material against chemical poisons, used e.g. for protective clothing comprises air-permeable textile with granular adsorbent attached by mixture of plastic dispersion and hot-melt adhesive powder

Publications (1)

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DE19849395A1 true DE19849395A1 (en) 2000-05-04

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DE1998149395 Withdrawn DE19849395A1 (en) 1998-10-27 1998-10-27 Protective material against chemical poisons, used e.g. for protective clothing comprises air-permeable textile with granular adsorbent attached by mixture of plastic dispersion and hot-melt adhesive powder

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8268736B2 (en) * 2005-08-10 2012-09-18 Blucher Gmbh Process for improving the breaking strength and/or tear strength of adsorptive filtering materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8268736B2 (en) * 2005-08-10 2012-09-18 Blucher Gmbh Process for improving the breaking strength and/or tear strength of adsorptive filtering materials

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