WO1997000710A1 - Protective clothing against toxic compounds - Google Patents

Protective clothing against toxic compounds Download PDF

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Publication number
WO1997000710A1
WO1997000710A1 PCT/BE1995/000060 BE9500060W WO9700710A1 WO 1997000710 A1 WO1997000710 A1 WO 1997000710A1 BE 9500060 W BE9500060 W BE 9500060W WO 9700710 A1 WO9700710 A1 WO 9700710A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
aluminium
protective material
water
layers
Prior art date
Application number
PCT/BE1995/000060
Other languages
French (fr)
Inventor
Bruno Heyndrickx
Original Assignee
Bruno Heyndrickx
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 Bruno Heyndrickx filed Critical Bruno Heyndrickx
Priority to PCT/BE1995/000060 priority Critical patent/WO1997000710A1/en
Priority to AU27089/95A priority patent/AU2708995A/en
Publication of WO1997000710A1 publication Critical patent/WO1997000710A1/en

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/24—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2437/00—Clothing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment

Definitions

  • the present invention relates to a ready-to- wear protective clothing against toxic or noxious compounds and viruses and to a stratified material suitable for said clothing. It finds its main application in chemical and pharmaceutical industries, particularly in biological laboratories specialized in the production of vaccines .
  • the protective clothing are made of a stratified protective material which consists of different layers. A protection may only be obtained if at least one of the layers is completely impermeable to gases and liquids and if this layer can offer chemical resistance over a longer period of time against the penetrating attacking compounds.
  • the invention relates to a protective suit in one piece, comprising a protective cap, a protective apron, gloves and coat for workers who are exposed to hazardous environments.
  • the invention concerns also a method of operation for the preparation of a stratified protective material against toxic compounds, especially chemical, microbiological and virological.
  • the material consists of a layer of textile fabric such as treated cotton and analogous material, an intermediate layer of mineral fibres and/or an absorbing carbon layer, a final layer of insulating and permeable foam plastic the cells of which are provided with an absorbing carbon layer. Quite often these suits have little effect against certain penetrating industrial pharmaceutical and war gases, to such an extent that the user no longer is protected, not even for a short time.
  • the present invention intends to correct these drawbacks and introduces a stratified protective material for producing ready-to-wear protective clothing against toxic or harmful compounds, offering virtually complete protection.
  • the protective material consist of several layers, such as an organic chemical layer or a layer of analogous fabrics and is distinguished because one of these layers is an aluminium layer, optionally finished with a layer of organic chemicals.
  • the ready-to-wear protective clothing includes an autonomous gasmask comprising an oxygen-source and a cartridge comprising a CO 2 - absorber of the exhaled carbon dioxide. It comprises usefully warning systems controlling the oxygen-supply and the carbon dioxide.
  • the CO 2 -absorber is preferably lime.
  • the aluminium layer consists of an extremely thin layer of aluminium foil.
  • the aluminium layer has a minimum thickness of about 8 micron.
  • the aluminium foil is glued onto a piece of fabric, or organic polymers.
  • the aluminium layer gives us a number of advantages, such as in the area of permeability to gas, chemical, microbiological or virological contamination.
  • the aluminium layer offers excellent vapour inhibiting features and possesses the property of reflecting warmth
  • the invention also concerns a method to produce the above described protective material.
  • the fabric layer is preferably heated to approximately 45°C together with the aluminium foil; after that both materials are glued together by means of water polyvinyl alcohol adhesive or analogous .
  • a thin aluminium layer 2 of minimum about 8 micron is applied, by gluing an aluminium foil onto it by means of a water polyvinyl alcohol adhesive seal 4.
  • the aluminium foil can already be adhered in advance to an existing plastic film 3 polyethylene ( ⁇ 70 micron).
  • aluminium protective material is suitable for the protection against such radioactive isotopes.
  • an aluminium layer offers the best protection, among other things : against isocyanates, extremely aggressive substances such as mustard gas; extremely penetrating substances, such as cyanides, mycotoxins, phosphorus, organic phosphoric compounds, fire bombs, lighting bombs, polymers, pyrolysis products, ⁇ - and ⁇ -rays, radioactive isotopes and radiation, etc.
  • aluminium suits produced with a protective material which consists of an aluminium layer 2, finished with organic chemical layers 1 and 3 or analogous compounds, offer almost complete protection. This depends among other things of the acidity of the aggressive substances.
  • Such material as described above is impermeable to any kind of low energetic particles. As such the material is impermeable to bacteria, spores and viruses.

Abstract

A ready-to-wear protective clothing is suitable against toxic or noxious compounds, provided: it consists of an aluminium layer (2), e.g. a complex layer of aluminium foil (2), finished with a polyester layer (1) and a layer of analogous organic compounds (polyethylene) (3) glued by means of water polyvinyl alcohol adhesive seal (4) or analogous; it includes an autonomous gasmask comprising an oxygen-source and a cartridge comprising a CO2 absorber of the exhaled carbon dioxide; it is disposable after single use.

Description

PROTECTIVE CLOTHING AGAINST TOXIC COMPOUNDS
The present invention relates to a ready-to- wear protective clothing against toxic or noxious compounds and viruses and to a stratified material suitable for said clothing. It finds its main application in chemical and pharmaceutical industries, particularly in biological laboratories specialized in the production of vaccines .
The protective clothing are made of a stratified protective material which consists of different layers. A protection may only be obtained if at least one of the layers is completely impermeable to gases and liquids and if this layer can offer chemical resistance over a longer period of time against the penetrating attacking compounds.
Such material is fit for the production of ready-to-wear labour clothing.
The invention relates to a protective suit in one piece, comprising a protective cap, a protective apron, gloves and coat for workers who are exposed to hazardous environments.
The invention concerns also a method of operation for the preparation of a stratified protective material against toxic compounds, especially chemical, microbiological and virological.
Based on the document BE-A-880.768, there exists a protective material for protective suits which consists of several layers : water resistant, non-combustible, non-flammable, insulating, impermeable to wa ter and/or to gases.
The material consists of a layer of textile fabric such as treated cotton and analogous material, an intermediate layer of mineral fibres and/or an absorbing carbon layer, a final layer of insulating and permeable foam plastic the cells of which are provided with an absorbing carbon layer. Quite often these suits have little effect against certain penetrating industrial pharmaceutical and war gases, to such an extent that the user no longer is protected, not even for a short time.
The present invention intends to correct these drawbacks and introduces a stratified protective material for producing ready-to-wear protective clothing against toxic or harmful compounds, offering virtually complete protection. The protective material consist of several layers, such as an organic chemical layer or a layer of analogous fabrics and is distinguished because one of these layers is an aluminium layer, optionally finished with a layer of organic chemicals.
In a particular embodiment, the ready-to-wear protective clothing includes an autonomous gasmask comprising an oxygen-source and a cartridge comprising a CO2- absorber of the exhaled carbon dioxide. It comprises usefully warning systems controlling the oxygen-supply and the carbon dioxide. The CO2-absorber is preferably lime.
A particularity of the invention states that the aluminium layer consists of an extremely thin layer of aluminium foil. The aluminium layer has a minimum thickness of about 8 micron. In a further development stage of an application form in accordance with the invention, the aluminium foil is glued onto a piece of fabric, or organic polymers.
As adhesive the use of a polyvinyl alcohol adhesive or analogue is recommended.
The aluminium layer gives us a number of advantages, such as in the area of permeability to gas, chemical, microbiological or virological contamination. In addition the aluminium layer offers excellent vapour inhibiting features and possesses the property of reflecting warmth
The invention also concerns a method to produce the above described protective material.
The fabric layer is preferably heated to approximately 45°C together with the aluminium foil; after that both materials are glued together by means of water polyvinyl alcohol adhesive or analogous .
These and other characteristics and particularities of the invention are hereafter demonstrated by the following accurate description of a specific method of execution, by means of the illustration enclosed, in which the only figure is a cross section of a protective material in accordance with the invention.
On a first surface of the layer 1 : polyester : ± 12 micron, a thin aluminium layer 2 of minimum about 8 micron is applied, by gluing an aluminium foil onto it by means of a water polyvinyl alcohol adhesive seal 4. The aluminium foil can already be adhered in advance to an existing plastic film 3 polyethylene (± 70 micron).
The reflecting properties of aluminium for α- and β-rays make that aluminium protective material is suitable for the protection against such radioactive isotopes.
The resistance of aluminium foil against madness and further oxidation is excellent.
In the scientific research by comparison with any type of textile fabric, plastic compounds and others, the conclusion has been reached that an aluminium layer, even a very thin one, offers the best protection, among other things : against isocyanates, extremely aggressive substances such as mustard gas; extremely penetrating substances, such as cyanides, mycotoxins, phosphorus, organic phosphoric compounds, fire bombs, lighting bombs, polymers, pyrolysis products, α- and β-rays, radioactive isotopes and radiation, etc.
A conclusion from experimental scientific research is that aluminium suits, produced with a protective material which consists of an aluminium layer 2, finished with organic chemical layers 1 and 3 or analogous compounds, offer almost complete protection. This depends among other things of the acidity of the aggressive substances.
In any case these suits offer a far better protection, they are much lighter to wear and have the great advantage, because of the low cost price, that they can also be used as a disposable suit for single use. That way it became clear that certain impure gases, such as mustard gas, are a lot more impregnating and penetrating than pure gas. Comparative research of protective suits made of different fabrics is grouped in the following charts. The tests concern the resistance of the investigated fabrics against Yperite (mustard gas 100 %). Each test was carried out three times. The average time is indicated in the last column, together with an appreciation of the efficiency of the protection.
Figure imgf000008_0001
Figure imgf000009_0001
Figure imgf000010_0001
Figure imgf000011_0001
Such material as described above is impermeable to any kind of low energetic particles. As such the material is impermeable to bacteria, spores and viruses.
It is also impermeable to wash or water vapour, implementing that bacterial contamination through transport in water is also avoided. Scientific studies have proven that a complete toxicological decontamination of protective suits is practically impossible. This disposable suit for single use gives an answer to said problem.

Claims

C L A I M S
1. Ready-to-wear protective clothing against toxic or noxious compounds, especially chemical, micro- biological and virological compounds, made of a stratified protective material consisting of several layers which are by turns water resistant, non-combustible, non-flammable, insulating, impermeable to water and/or gases, characterized in that the layers are an organic chemical layer (1) or analogous fabric and that at least one of the layers is an aluminium layer (2), optionally finished with an organic chemical layer (1) or an organic fabric.
2. Ready-to-wear protective clothing according to claim 1, characterized in that it includes an autonomous gasmask comprising an oxygen-source and a cartridge comprising a CO2 absorber of the exhaled carbon dioxide.
3. Ready-to-wear protective clothing according to claim 2, characterized in that it comprises warning systems controlling the oxygen-supply and the carbon dioxide.
4. Protective material characterized in that the aluminium layer (2) consists of an aluminium foil.
5. Protective material according to claim 4, with the property that the aluminium layer (2) consists of a glued aluminium foil or a complex aluminium foil (3).
6. Protective material according to claim 4 or 5, with the property that the aluminium layer (2) has a minimum thickness of approximately 8 micron.
7. Protective material according to one of claims 3 to 6, characterized in that it is impermeable to any kind of low energetic particles, to bacteria, spores and viruses and also impermeable to water and water vapour so that bacterial contamination through transport in water is avoided.
8. Method in order to glue a stratified protective material according to one of the preceding claims, consisting of several layers, among which an organic chemical layer (1) or analogous fabrics, characterized in that the organic chemical layer (1), together with the aluminium layer (2) is glued together gluing both layers by means of a water polyvinyl alcohol adhesive seal (4) or analogous.
9. Application of a disposable single use protec- tive clothing according to one of the claism 1 to 3, as protection against : isocyanates, mustard gas, cyanides, mycotoxins, phosphorus, organic phosphoric acid compounds, firebombs, lightning bombs, polymers, pyrolysis products, a- and β-rays, radioactive isotopes and radiation, microbiological and virological agents.
PCT/BE1995/000060 1995-06-22 1995-06-22 Protective clothing against toxic compounds WO1997000710A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/BE1995/000060 WO1997000710A1 (en) 1995-06-22 1995-06-22 Protective clothing against toxic compounds
AU27089/95A AU2708995A (en) 1995-06-22 1995-06-22 Protective clothing against toxic compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BE1995/000060 WO1997000710A1 (en) 1995-06-22 1995-06-22 Protective clothing against toxic compounds

Publications (1)

Publication Number Publication Date
WO1997000710A1 true WO1997000710A1 (en) 1997-01-09

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Family Applications (1)

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Country Status (2)

Country Link
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WO (1) WO1997000710A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6531419B1 (en) * 1999-07-01 2003-03-11 R. H. Wyner Associates, Inc. Multi-layer protective fabrics
GB2405084A (en) * 2003-07-25 2005-02-23 Bw Technologies Ltd A portable carrier for drinking fluid able to resist chemical, biological and radioactive contamination
US7553779B2 (en) 2003-12-10 2009-06-30 Shawmut Corporation Protective laminates
CN104001287A (en) * 2014-05-21 2014-08-27 苏州潮盛印花制版实业有限公司 Fireproof shell fabric

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214321A (en) * 1978-12-21 1980-07-29 Abcor, Inc. Glove for use with organic solvents
US4792480A (en) * 1987-09-14 1988-12-20 Freund Paul X Laminate material for use in protective clothing
FR2646781A1 (en) * 1989-05-12 1990-11-16 Lemasson Yves Breathing device and assembly, in particular for unbreathable atmosphere, in particular for contaminated environment
BE1003216A5 (en) * 1989-12-27 1992-01-14 Heyndrickx Bruno Layered protective material for clothing giving protection against toxicgases
DE4337014A1 (en) * 1993-07-02 1995-02-16 Rolf Mager Insulating sheet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214321A (en) * 1978-12-21 1980-07-29 Abcor, Inc. Glove for use with organic solvents
US4792480A (en) * 1987-09-14 1988-12-20 Freund Paul X Laminate material for use in protective clothing
FR2646781A1 (en) * 1989-05-12 1990-11-16 Lemasson Yves Breathing device and assembly, in particular for unbreathable atmosphere, in particular for contaminated environment
BE1003216A5 (en) * 1989-12-27 1992-01-14 Heyndrickx Bruno Layered protective material for clothing giving protection against toxicgases
DE4337014A1 (en) * 1993-07-02 1995-02-16 Rolf Mager Insulating sheet

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6531419B1 (en) * 1999-07-01 2003-03-11 R. H. Wyner Associates, Inc. Multi-layer protective fabrics
US6869900B2 (en) 1999-07-01 2005-03-22 Shawmut Corporation Multi-layer protective fabrics
GB2405084A (en) * 2003-07-25 2005-02-23 Bw Technologies Ltd A portable carrier for drinking fluid able to resist chemical, biological and radioactive contamination
GB2405084B (en) * 2003-07-25 2006-05-24 Bw Technologies Ltd Drinking fluid carriers
US7553779B2 (en) 2003-12-10 2009-06-30 Shawmut Corporation Protective laminates
CN104001287A (en) * 2014-05-21 2014-08-27 苏州潮盛印花制版实业有限公司 Fireproof shell fabric

Also Published As

Publication number Publication date
AU2708995A (en) 1997-01-22

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