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DE1103007B - Laminate, especially for conveyor belts, wall panels, floor coverings, etc. Like. With additives preventing electrostatic charge - Google Patents

Laminate, especially for conveyor belts, wall panels, floor coverings, etc. Like. With additives preventing electrostatic charge

Info

Publication number
DE1103007B
DE1103007B DEL27182A DEL0027182A DE1103007B DE 1103007 B DE1103007 B DE 1103007B DE L27182 A DEL27182 A DE L27182A DE L0027182 A DEL0027182 A DE L0027182A DE 1103007 B DE1103007 B DE 1103007B
Authority
DE
Germany
Prior art keywords
stabilizer
laminate
conveyor belts
wall panels
pvc
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.)
Pending
Application number
DEL27182A
Other languages
German (de)
Inventor
John Lewis
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.)
RUBBER IMPROVEMENT Ltd
Original Assignee
RUBBER IMPROVEMENT Ltd
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 RUBBER IMPROVEMENT Ltd filed Critical RUBBER IMPROVEMENT Ltd
Publication of DE1103007B publication Critical patent/DE1103007B/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/04—Driving-belts made of fibrous material, e.g. textiles, whether rubber-covered or not
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/04—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C09D127/06—Homopolymers or copolymers of vinyl chloride
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/06—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0005—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface
    • D06N7/0039—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface characterised by the physical or chemical aspects of the layers
    • D06N7/0042—Conductive or insulating layers; Antistatic layers; Flame-proof layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)
  • Floor Finish (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

Schichtstoff, insbesondere für Förderbänder, Wandplatten, Fußbodenbeläge u. dgl. mit eine elektrostatische Aufladung verhindernden Zusätzen Die Erfindung bezieht sich auf einen Schichtstoff, insbesondere für Förderbänder, Wandplatten, Fußbodenbeläge u. dgl., die aus plastischen Massen, Gummi oder dergleichen Werkstoffen beschränkter elektrischer Leitfähigkeit bestehen und eine elektrostatische Aufladung verhindernde Zusätze enthalten. Laminate, in particular for conveyor belts, wall panels, floor coverings and the like with electrostatic charge preventing additives The invention refers to a laminate, especially for conveyor belts, wall panels, Floor coverings and the like made of plastic masses, rubber or similar materials limited electrical conductivity and an electrostatic charge contain preventive additives.

Diese Schichtstoffe finden Verwendung in Krankenhäusern und Munitionsfabriken sowie als Überzüge für Förderbänder und Transportbehälter für den Gebrauch in Bergwerken od. dgl., wobei die Beläge, Bänder usw. in bekannter Weise vorzugsweise PVC-Deckplatten aufweisen.These laminates are used in hospitals and ammunition factories and as covers for conveyor belts and transport containers for use in mines or the like. The coverings, tapes, etc. in a known manner, preferably PVC cover plates exhibit.

Es ist bekannt, daß durch Zusetzen eines leitfähigen Kohlenrußes, wie Azetylenruß, in Plastik, Gummi oder in einem synthetischen elastischen Stoff die Möglichkeit besteht, den spezifischen Widerstand von 1011 bis 1014 Ohm/cms auf 103 bis 104 Ohm/cm3 herabzusetzen. Der Wert 105 bis 108 Ohmtzm3 wird normalerweise als den Anforderungen genügender Bereich für antielektrostatische Schichtstoffe angesehen. It is known that by adding a conductive carbon black, like acetylene black, in plastic, rubber or in a synthetic elastic material it is possible to set the resistivity from 1011 to 1014 ohm / cms 103 to 104 ohms / cm3. The value 105 to 108 ohmtm3 is usually as an area that meets the requirements for anti-static laminates viewed.

Jedoch können Schichtstoffe aus Plastik, Gummi oder synthetischen elastischen Stoffen, die Kohlenruß enthalten, nur in schwarzer Farbe hergestellt werden. However, laminates can be made of plastic, rubber, or synthetic elastic fabrics that contain carbon black are only produced in black will.

Auch beeinflußt die Beigabe der erforderlichen Mengen von Kohlenruß zu Gummi und elastischen Stoffen im allgemeinen wesentlich deren physikalische Eigenschaften.The addition of the required quantities of carbon black also has an impact to rubber and elastic materials in general their physical properties are essential.

Gemäß der Erfindung werden diese Nachteile dadurch beseitigt, daß eine innere Schicht (Platten) mit geringem spezifischem Widerstand und hierauf eine äußere Schicht (Deckplatten) mit beschränkter Leitfähigkeit angeordnet ist. According to the invention, these disadvantages are eliminated in that an inner layer (plates) with low resistivity and then a outer layer (cover plates) with limited conductivity is arranged.

Eine beschränkte Leitfähigkeit hat ein Material dann, wenn der Widerstand etwa bei 109 bis 10"Ohm/cm liegt. Einen geringen spezifischen Widerstand hat ein Material mit einem Widerstand in der Größenordnung von 10 Ohm/cm3 oder darunter. A material has a limited conductivity if its resistance is about 109 to 10 "ohms / cm. A has a low specific resistance Material with a resistance on the order of 10 ohms / cm3 or less.

Durch Mischungen aus natürlichem oder synthetischem Kautschuk mit Ruß hergestellte elektrisch leitende Elastomere werden in der Kabel-und in der Textilindustrie verwendet. Sie sind durch ihren Gehalt an Ruß schwarz gefärbt und dadurch insbesondere für die Textilindustrie wenig geeignet. Zur Herstellung elektrisch leitender, heller, rußfreier Vulkanisate von Naturkautschuk und synthetischen Elastomeren ist es bekannt, einen Gehalt an Polyglykoläthern tertiärer oder quaternärer Alkylolamine oder deren Salzen mit anorganischen oder organischen Säuren vorzusehen. Diese Substanzen verleihen den Polymerisaten schon bei verhältnismäßig geringen Zusätzen auch in trockener Atmosphäre eine ausreichende Leitfähigkeit. By blending natural or synthetic rubber with Electrically conductive elastomers made from carbon black are used in the cable and textile industries used. Due to their soot content, they are colored black and therefore especially not very suitable for the textile industry. For the production of electrically conductive, brighter, soot-free vulcanizates of natural rubber and synthetic elastomers are known to a content of polyglycol ethers of tertiary or quaternary alkylolamines or their Provide salts with inorganic or organic acids. These substances confer the polymers even in the case of relatively low additions, even in dry conditions Atmosphere has sufficient conductivity.

Solche Vulkanisate sind aber für Schichtstoffe, wie Förderbänder, Wandplatten, Fußbodenbeläge u. dgl., nicht geeignet, weil ihnen eine äußere Schicht mit beschränkter Leitfähigkeit fehlt, so daß sie der äußeren Umgebung ausgesetzt sind. Das führt aber zu einer unzulässig raschen Verteilung der elektrostatischen Aufladung und damit zu Funkenbildung. Such vulcanizates are, however, for laminates, such as Conveyor belts, Wall panels, floor coverings and the like, not suitable because they have an outer layer with limited conductivity is absent, leaving them exposed to the external environment are. However, this leads to an impermissibly rapid distribution of the electrostatic Charging and thus sparking.

In der Zeichnung sind zwei Ausführungsbeispiele der Erfindung dargestellt. Es zeigt Fig. 1 schematisch einen Schnitt durch ein Förderband, Fig. 2 einen Fußboden-oder Wandbelag. Two exemplary embodiments of the invention are shown in the drawing. It shows Fig. 1 schematically a section through a conveyor belt, Fig. 2 a floor or Wall covering.

Nach Fig. 1 besteht der Förderbandkern aus mehreren Gewebelagen 1 (aus Baumwolle oder synthetischem Material) und PVC-Zwischenlagen 2 folgender Zusammensetzung : Polyvinylchlorid............ 100 Weichmacher............... 100 Stabilisator............... 2 Auf den Bandkern 1, 2 werden zwei Deckplatten 3 aufgebracht, die einen geringen spezifischen Widerstand, eine schwarze Farbe, eine Stärke von 0,1 bis 0,5 mm und folgende Zusammensetzung aufweisen : Polyvinylchlorid............100 AzetylenruB................ 20 Pulverisierter Graphit....... 20 Stabilisator................ 2 Die äußeren Banddeckplatten 4 bestehen aus einer farbigen Mischung von beschränkter Leitfähigkeit mit folgender Zusammensetzung : Polyvinylchlorid............ 100 Weichmacher............... 90 Stabilisator................ 2 Polyäthylenglycol-Monooleat 7 Pigment.................... 1 Der zwischen zwei konzentrischen Metallelektroden, die aus einer inneren, zylindrischen Elektrode von 25,4 mm Durchmesser und einer äußeren, ringförmigen Elektrode von 127 mm Innendurchmesser bestehen, gemessene Widerstand liegt etwa zwischen 2 und 6'lys Ohm bei einer angelegten Spannung von 500 Volt Gleichstrom. According to FIG. 1, the conveyor belt core consists of several layers of fabric 1 (made of cotton or synthetic material) and PVC intermediate layers 2 of the following composition : Polyvinyl chloride ............ 100 plasticizer ............... 100 stabilizer ............... 2 On the tape core 1, 2 two cover plates 3 are applied, which have a small specific resistance, a black color, a thickness of 0.1 up to 0.5 mm and have the following composition: polyvinyl chloride ............ 100 Acetylene black ................ 20 Powdered graphite ....... 20 Stabilizer ................ 2 The outer band cover plates 4 consist of a colored mixture of limited Conductivity with the following composition: polyvinyl chloride ............ 100 plasticizers ............... 90 Stabilizer ................ 2 Polyethylene glycol monooleate 7 Pigment .................... 1 The one between two concentric metal electrodes consisting of an inner, cylindrical 25.4 mm diameter electrode and an outer, ring-shaped electrode of 127 mm inside diameter, the measured resistance is between 2 and 6'lys ohms at an applied voltage of 500 volts DC.

Nach Fig. 2 ist eine kalandrierte Platte 5 mit einer Stärke von 0,5 mm vorgesehen, die einen geringen spezifischen Widerstand und folgende Zusammensetzung aufweist : Polyvinylchlorid............ 100 Weichmacher............... 35 AzetylenruB................ 50 Mineralische Füllmasse 50 Stabilisator................ 2 Auf die Platte 5 ist eine farbige Deckplatte 6 (oder mehrere solcher Platten) in einer Stärke von 1 bis 2 mm aufgeschmolzen, die eine beschränkte Leitfähigkeit und folgende Zusammensetzung aufweist : Polyvinylchlorid............ 100 Asbest..................... 100 Weichmacher............... 20 Polyäthylenglycol-Monooleat 15 Mineralische Füllmasse 20 Stabilisator................ 2 Pigment.................... 2 Der zwischen zwei Metallelektroden von 25,4 mm Querschnitt in einem Abstand bis zu 3 m gemessene spezifische Widerstand auf der farbigen Oberfläche des Fußbodenbelages übersteigt nicht 107 Ohm. According to Fig. 2 is a calendered plate 5 with a thickness of 0.5 mm provided, which has a low specific resistance and the following composition contains: polyvinyl chloride ............ 100 plasticizers ............... 35 acetylene black ................ 50 mineral filler 50 stabilizer ................ 2 on the plate 5 is a colored cover plate 6 (or several such plates) in a thickness of 1 to 2 mm melted, which has a limited conductivity and the following composition contains: polyvinyl chloride ............ 100 asbestos ..................... 100 plasticizers .......... ..... 20 Polyethylene glycol monooleate 15 Mineral filler 20 Stabilizer ................ 2 Pigment .................... 2 The one between two metal electrodes with a cross section of 25.4 mm measured at a distance of up to 3 m specific resistance on the colored surface of the floor covering does not exceed 107 ohms.

Sämtliche obengenannten Gemische können durch gewöhnliche Aufstrich-oder Aufwalzverfahren schichtweise in jederKombination aufgebracht werden. All of the above mixtures can be made by ordinary spreads or Roll-on process can be applied in layers in any combination.

Nach Belieben können beide Schichten oder eine derselben aufgepreßt oder in einer Lösung oder Suspension in einer geeigneten flüchtigen Flüssigkeit aufgegossen werden. Both layers or one of them can be pressed on as desired or in a solution or suspension in a suitable volatile liquid to be infused.

PATENTANSPROCHE : 1. SchichtstofF, insbesondere für Förderbänder, Wandplatten, Fußbodenbeläge u. dgl., die aus plastischen Massen, Gummi oder dergleichen Werkstoffen beschränkter elektrischer Leitfähigkeit bestehen und eine elektrostatische Aufladung verhindernde Zusätze enthalten, dadurch gekennzeichnet, daß eine innere Schicht (Platten 3 bzw. 5) mit geringem spezifischem Widerstand und hierauf eine äußere Schicht (Deckplatten 4 bzw. 6) mit beschränkter Leitfähigkeit angeordnet ist. PATENT APPROACH: 1. Laminate, especially for conveyor belts, Wall panels, floor coverings and the like, made of plastic masses, rubber or the like Materials of limited electrical conductivity exist and an electrostatic Contain charge-preventing additives, characterized in that an internal Layer (plates 3 or 5) with low specific resistance and then a outer layer (cover plates 4 or 6) arranged with limited conductivity is.

Claims (1)

2. Schichtstoff nach Anspruch 1, dadurch gekennzeichnet, daß er aus dem Bandkern (1, 2) mit beidseitig aufgeklebten Bandkernplatten (3) aus PVC-Azetylenruß-pulverisiertem Graphit-Stabilisator und hierauf angeordneten Deckplatten (4) aus PVC-Weichmacher-Stabilisator-Polyäthylenglycol-Monooleat-Pigment besteht. 2. Laminate according to claim 1, characterized in that it consists of the tape core (1, 2) with tape core plates (3) made of PVC-acetylene black powdered on both sides Graphite stabilizer and cover plates (4) arranged thereon made of PVC plasticizer stabilizer polyethylene glycol monooleate pigment consists. 3. Schichtstoff nach Anspruch 1, dadurch gekennzeichnet, daß auf eine Schicht (5) aus PVC-Weichmacher-Azetylenruß-mineralischer Füllmasse-Stabilisator eine Deckplatte (6) aus PVC-Asbest-Weichmacher-Polyäthylenglykol-Monooleat-mineralische Füllmasse-Stabilisator-Pigment aufgeklebt ist. 3. Laminate according to claim 1, characterized in that on a layer (5) of PVC plasticizer-acetylene black-mineral filler stabilizer a cover plate (6) made of PVC-asbestos-plasticizer-polyethylene glycol-monooleate-mineral Filler stabilizer pigment is stuck on. In Betracht gezogene Druckschriften : Deutsche Patentschrift Nr. 864 149 ; deutsche Patentanmeldung C 3671 XI/81 e (bekanntgemacht am 19.7.1951) ; deutsches Gebrauchsmuster Nr. 1 682 637 ; USA.-Patentschrift Nr. 2 655 195. Publications considered: German Patent No. 864 149; German patent application C 3671 XI / 81 e (published on July 19, 1951) ; German utility model No. 1 682 637; U.S. Patent No. 2,655,195. In Betracht gezogene ältere Patente : Deutsches Patent Nr. 950 322. Older patents considered: German Patent No. 950 322.
DEL27182A 1956-03-23 1957-03-19 Laminate, especially for conveyor belts, wall panels, floor coverings, etc. Like. With additives preventing electrostatic charge Pending DE1103007B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB915956A GB845870A (en) 1956-03-23 1956-03-23 Improvements in or relating to anti-static belting of plastic, rubber or synthetic elastomer

Publications (1)

Publication Number Publication Date
DE1103007B true DE1103007B (en) 1961-03-23

Family

ID=9866547

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL27182A Pending DE1103007B (en) 1956-03-23 1957-03-19 Laminate, especially for conveyor belts, wall panels, floor coverings, etc. Like. With additives preventing electrostatic charge

Country Status (3)

Country Link
BE (1) BE555889A (en)
DE (1) DE1103007B (en)
GB (2) GB845871A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1217916B (en) * 1961-11-21 1966-06-02 Degussa Process for the production of substrates provided with antistatic to electrically conductive plastic coatings produced by the paste process
DE1253665B (en) * 1963-03-29 1967-11-09 Degussa Process for the production of synthetic leather-like laminates
DE2635098A1 (en) * 1976-08-04 1978-02-09 Ver Seidenwebereien Ag Coated aromatic polyamide textile fabrics - with fluorocarbon, polyimide or polyester-urea coating, useful as tank linings and for balloons, inflatable boats etc.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE864149C (en) * 1946-03-29 1953-01-22 Dunlop Rubber Co Process for the production of objects from rubber with fabric inlays or covers
US2655195A (en) * 1950-10-21 1953-10-13 Goodrich Co B F Conveyer belt and method of making same
DE1682637U (en) * 1954-01-25 1954-09-02 Continental Gummiwerke A G CONVEYOR BELT, DRIVE BELT OD. DGL.
DE950322C (en) * 1953-02-05 1956-10-04 Bayer Ag Electrically conductive vulcanizates made from natural or synthetic elastomers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE864149C (en) * 1946-03-29 1953-01-22 Dunlop Rubber Co Process for the production of objects from rubber with fabric inlays or covers
US2655195A (en) * 1950-10-21 1953-10-13 Goodrich Co B F Conveyer belt and method of making same
DE950322C (en) * 1953-02-05 1956-10-04 Bayer Ag Electrically conductive vulcanizates made from natural or synthetic elastomers
DE1682637U (en) * 1954-01-25 1954-09-02 Continental Gummiwerke A G CONVEYOR BELT, DRIVE BELT OD. DGL.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1217916B (en) * 1961-11-21 1966-06-02 Degussa Process for the production of substrates provided with antistatic to electrically conductive plastic coatings produced by the paste process
DE1253665B (en) * 1963-03-29 1967-11-09 Degussa Process for the production of synthetic leather-like laminates
DE2635098A1 (en) * 1976-08-04 1978-02-09 Ver Seidenwebereien Ag Coated aromatic polyamide textile fabrics - with fluorocarbon, polyimide or polyester-urea coating, useful as tank linings and for balloons, inflatable boats etc.

Also Published As

Publication number Publication date
BE555889A (en)
GB845870A (en) 1960-08-24
GB845871A (en) 1960-08-24

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