PT87899B - WITHOUT STRETCH BELT FOR DRIVE BELT AND TRANSPORT BELT - Google Patents

WITHOUT STRETCH BELT FOR DRIVE BELT AND TRANSPORT BELT Download PDF

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Publication number
PT87899B
PT87899B PT87899A PT8789988A PT87899B PT 87899 B PT87899 B PT 87899B PT 87899 A PT87899 A PT 87899A PT 8789988 A PT8789988 A PT 8789988A PT 87899 B PT87899 B PT 87899B
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Portugal
Prior art keywords
belt
fibers
synthetic
fleece
nonwoven fabric
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PT87899A
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Portuguese (pt)
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PT87899A (en
Original Assignee
Lohmann Gmbh & Co Kg
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Publication of PT87899A publication Critical patent/PT87899A/en
Publication of PT87899B publication Critical patent/PT87899B/en

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4242—Carbon fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4234—Metal fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/645—Impregnation followed by a solidification process
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Belt Conveyors (AREA)
  • Woven Fabrics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Artificial Filaments (AREA)
  • Package Frames And Binding Bands (AREA)
  • Laminated Bodies (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Conductive Materials (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Abstract

The invention seeks to provide a band containing non-woven fabric, for drive and conveyor belts, which band does not build up electric charges. The fibre mixture of the non-woven fabric contains about 1 to 10 % by weight of electrically conductive fibres. <IMAGE>

Description

L0HMANN GmbH & Co. KG., alemã, industrial, com sede em Irlichex Str. 55, 5450 Neuwied 12, República Federal da Alemanha, pretende obter em Portugel, para: CORREIA COM TECIDO NÃO URDIDO PARA CORREIAS DE ACCIONAMENTO E DE TRANSPORTE.L0HMANN GmbH & Co. KG., German, industrial, headquartered in Irlichex Str. 55, 5450 Neuwied 12, Federal Republic of Germany, intends to obtain in Portugel, for: BELT WITH UNDWIDED FABRIC FOR DRIVING AND TRANSPORTING BELTS.

Mod. 71 - 10 000 «X - 4-87 presente invento refere-se a uma correia com tecido não urdido para correias de accionamento e transportadoras de correia.Mod. 71 - 10 000 «X - 4-87 The present invention relates to a nonwoven belt for drive belts and belt conveyors.

As correias de accionamento e para transportadores de correia são inter alia produzidas empregando tecidos não urdidos que têm uma pequena extensibilidade e opcionalmente uma certa elasticidade a fim de se evitar o alongamento do transportador de correia durante a sua utilização e o consequente reaperto.The drive belts and for belt conveyors are inter alia produced using nonwoven fabrics that have a small extensibility and optionally a certain elasticity in order to avoid the elongation of the belt conveyor during its use and the consequent retightening.

Existe o problema de facilmente aparecerem cargas estáticas na correia, por exemplo, semelhantemente ao que se sabe acontecer no caso do funcionamento dos geradores de ven der Graff, Este efeito é particularmente indesejável para o caso do transporte de partes sensíveis, por exemplo, de partes electrónicas.There is a problem with static charges easily appearing on the belt, for example, similarly to what is known to happen in the case of the operation of the generators of ven der Graff. This effect is particularly undesirable for the transport of sensitive parts, for example, parts electronic.

Já se sabe como aplicar a tecidos não urdidos um acabamento antiestático tendo sido proposto incorporar fibras condutoras em carpetes que incluem materiais queIt is already known how to apply an antistatic finish to nonwoven fabrics and it has been proposed to incorporate conductive fibers in carpets that include materials that

-1.JULAB8®=~-1.JULAB8® = ~

59.96159,961

Ref: LOH 14/87 PERef: LOH 14/87 PE

Mod. 71 · 10 000 βχ - 4-07 contêm fibras sintéticas para evitar a acumulação de cargas eléctricas.Mod. 71 · 10,000 βχ - 4-07 contain synthetic fibers to prevent the accumulation of electrical charges.

A memória descritiva do Pedido de Patente Alemã publicado para inspecção pública N2 DE-OS propõe, para evitar a acumulação de cargas eléctricas em carpetes, o uso de um tecido básico para as carpetes de tufos e tecidos têxteis obtidos com agulhas que tem filamentos ou fios de fibras de uma mistura de fibras com fibras metálicas ou fibras metalizadas.The specification of the German Patent Application published for public inspection N 2 DE-OS proposes, to avoid the accumulation of electrical charges in carpets, the use of a basic fabric for tufted carpets and textile fabrics obtained with needles that have filaments or fiber yarns from a mixture of fibers with metallic fibers or metallic fibers.

A Patente Alemã N2 19 17 587 refere-se à adição de fibras metálicas, preferivelmente de fibras de aço a um laminado formado a partir de diferentes materiais fibrosos.German Patent No. 2 19 17 587 relates to the addition of metallic fibers, preferably steel fibers to a laminate formed from different fibrous materials.

Para evitar a formação de cargas estáticas de pratos giratórios de discos, na Patente Alemã N2 24 57 542, propôs-se a incorporação de fibras metálicas, particularmente de fibras de aço no feltro que recobre os referidos pratos giratórios.In order to avoid the formation of static charges on rotating disc plates, in German Patent N 2 24 57 542, it was proposed to incorporate metal fibers, particularly steel fibers in the felt that covers the said rotating plates.

Na revista Textile Institute and Industry, Volume 7, 1972, página 100, descrevem-se tecidos condutores feitos a partir dum velo com um certo teor de fibras metálicas para finalidades de filtração.In the Textile Institute and Industry, Volume 7, 1972, page 100, conductive fabrics made from a fleece with a certain content of metal fibers are described for filtration purposes.

A técnica anterior utiliza velos não sujeitos a quaisquer requisitos especiais relativamente à resistência ao alongamento linear e que não são apropriados para transportadores de correia.The prior art uses fleece which is not subject to any special requirements with respect to resistance to linear stretching and which are not suitable for belt conveyors.

Para evitar a acumulação de cargas, já foi proposto produzir-se esses transportadores de correia com materiais ligantes ou de revestimento a que se adicionaram substâncias condutoras, geralmente, negro de fumo ou pó de metal. É um inconveniente desta solução o facto de se obterem sempre correias transportadoras de cor escura, en2In order to avoid the accumulation of loads, it has already been proposed to produce these belt conveyors with binder or coating materials to which conductive substances have been added, usually carbon black or metal powder. A drawback of this solution is the fact that dark colored conveyor belts are always obtained, en2

59.96159,961

Ref: LOH 14/87 PERef: LOH 14/87 PE

Mod. 71 - 10 000 βχ -4-87 quanto para muitas utilizações tais como a indústria electrónica e as indústrias alimentares, se preferem correias de cores claras. As correias conhecidas são ou demasiadamente complicadas de fabricar ou inconvenientes em virtude de se desgastarem muito rapidamente. 0 problema tomou-se mais difícil com o aumento de utilização de fibras sintéticas apropriadas como resultado das suas caracteristicas favoráveis para utilização em correias transportadoras de comprimento constante que têm tendência para aumentarem de carga eléctrica.Mod. 71 - 10 000 βχ -4-87 and for many uses such as the electronics industry and the food industries, light colored belts are preferred. Known belts are either too complicated to manufacture or inconvenient because they wear out very quickly. The problem has become more difficult with the increase in the use of suitable synthetic fibers as a result of its favorable characteristics for use on conveyor belts of constant length that tend to increase in electrical charge.

problema que o presente invento pretende resolver ê proporcionar correias acabadas com um tecido não urdido para correias transportadoras e de accionamento de tal modo que se possa evitar que fiquem carregadas electri camente.The problem that the present invention aims to solve is to provide belts finished with a nonwoven fabric for conveyor and drive belts in such a way that they can be prevented from being electrically charged.

De acordo com o presente invento, este problema é resolvido mediante a utilização de um material para as correias que tem um velo em que a mistura das fibras do tecido não urdido tem aproximadamente 1 a 10% de fibras electricamente condutoras.According to the present invention, this problem is solved by using a belt material that has a fleece in which the fiber blend of the nonwoven fabric has approximately 1 to 10% electrically conductive fibers.

Os tecidos não urdidos podem ser constituídos pela maior parte dos variados velos, por exemplo, velos ponteados, velos de fibras entrelaçadas, etc.Nonwoven fabrics can be made up of most of the various fleece, for example, dotted fleece, interwoven fiber fleece, etc.

A mistura de fibras do tecido não urdido pode ter fibras sintéticas e/ou naturais e/ou semissintéticas, como por exemplo de poliéster, poliamida, polipropileno, poliacrílicas, algodão, coco e fibra de lã ou semelhantes.The fiber blend of the nonwoven fabric may have synthetic and / or natural and / or semi-synthetic fibers, such as for example polyester, polyamide, polypropylene, polyacrylics, cotton, coconut and wool fiber or the like.

É particularmente vantajoso que a correia tenha um ou mais fios de elevada resistência mecânica e pequena extensão, filamentos, tecidos ou tecidos entrançados de fibras sintéticas e/ou naturais e/ou semissintêticas. As fibras apropriadas são, entre outras, fibras de poliéster, poliamida, polipropileno, lã, poliaramida, vi- 3 59.961It is particularly advantageous that the belt has one or more strands of high mechanical resistance and small length, filaments, fabrics or fabrics braided from synthetic and / or natural and / or semi-synthetic fibers. Suitable fibers are, among others, fibers of polyester, polyamide, polypropylene, wool, polyamide, vi- 3 59,961

Ref: LOH 14/87 PE <r*JÚL. TP88 'Ref: LOH 14/87 PE <r * JÚL. TP88 '

Mod. 71 - 10 000 βχ - 4-07 dro e cerâmicas ou suas combinações.Mod. 71 - 10 000 βχ - 4-07 dro and ceramics or their combinations.

As fibras electricamente condutoras utilizadas podem ter pelo menos um metal ou carbono elementar. Por exemplo, ê apropriado usar fibras de aço ou de cobre para esta finalidade mas também é possível utilizar fibras metalizadas, por exemplo, fibras revestidas com cobre ou com prata. 0 carbono é considerado como constituído por formas alotrópicas condutoras como, por exemplo, filamentos de grafite.The electrically conductive fibers used can have at least one elemental carbon or metal. For example, it is appropriate to use steel or copper fibers for this purpose but it is also possible to use metallized fibers, for example, fibers coated with copper or silver. Carbon is considered to consist of conductive allotropic forms, such as graphite filaments.

De acordo com uma forma de realização preferida, são vantajosas fibras de aço com um título de 0,8 - 18 e preferivelmente 3-10 dtex e com um comprimento da fibra de 20 - 80 mm. É vantajoso que a resistência su2 8 perficial do tecido não urdido a 100 V seja 10 a 10 e / £ preferivelmente IO4, a 10 ohm.According to a preferred embodiment, steel fibers with a titer of 0.8 - 18 and preferably 3-10 dtex and with a fiber length of 20 - 80 mm are advantageous. It is advantageous that the perfective strength of the nonwoven fabric at 100 V is 10 to 10 and / or preferably 10 4 at 10 ohm.

É possível usar ligantes hidrofóbicos tais como borracha de nitrilo/butadieno e/ou látex de borracha/bu tadieno.It is possible to use hydrophobic binders such as nitrile / butadiene rubber and / or rubber / butadiene latex.

Um tecido condutor não urdido para correias de accionamento e transportadoras compreende um velo mecanicamente ponteado de fibras sintéticas com fibras condutoras incorporadas e um ligante, com que o velo de base é impregnado. Durante a produção de tecido não urdido que pode conter um ou mais tecidos ou tecidos entrelaçados, com o velo de fibras são misturadas fibras condutoras, o velo mecanicamente endurecido é então impregnado com uma solução de ligante e depois seca a uma temperatura de 100°C.A nonwoven conductive fabric for drive belts and conveyors comprises a mechanically dotted fleece of synthetic fibers with incorporated conductive fibers and a binder with which the base fleece is impregnated. During the production of non-woven fabric that can contain one or more interlaced fabrics or fabrics, conductive fibers are mixed with the fiber fleece, the mechanically hardened fleece is then impregnated with a binder solution and then dried at a temperature of 100 ° C .

A mistura de fibras do tecido não urdido pode conter fibras sintéticas e/ou naturais e/ou semissintéticas. As fibras sintéticas apropriadas são, por exemplo, as fibras de poliéster, fibras de polipropileno ou suas misturas, particularmente devido à sua grande estabilidadeThe fiber blend of the nonwoven fabric may contain synthetic and / or natural and / or semi-synthetic fibers. Suitable synthetic fibers are, for example, polyester fibers, polypropylene fibers or mixtures thereof, particularly due to their great stability

- 4 59.961- 4 59,961

Ref: LOH 14/87 PSRef: LOH 14/87 PS

-1. JUL.1988 ίβ->- » 000 01- U Ί e preço favorável.-1. JUL.1988 ίβ -> - »000 01- U Ί and favorable price.

As fibras electricamente condutoras particularmente preferidas são as que têm pelo menos um metal facilmente condutor e flexível tal como cobre, ferro, alumínio ou fibras cobertas com um metal condutor ou carbono elementar.Particularly preferred electrically conductive fibers are those that have at least one easily conductive and flexible metal such as copper, iron, aluminum or fibers covered with a conductive metal or elemental carbon.

Os ligantes preferidos são borracha de nitrilo/butadieno e/ou látex de borracha de estireno/butadieno. Como ligante é, por exemplo, possível usar dispersões de borracha de nitrilo/butadieno, látex de borracha de estireno/butadieno ou ligantes dissolvidos num dissolvente, como poliuretana, policloreto de vinilo, poliacrilato ou suas misturas. A proporção de fibra para ligante é preferivelmente compreendida entre 1:2 e 2:1 e, de maneira particularmente preferida, é igual a 1:1 partes em peso.Preferred binders are nitrile / butadiene rubber and / or styrene / butadiene rubber latex. As a binder, for example, it is possible to use dispersions of nitrile / butadiene rubber, styrene / butadiene rubber latex or binders dissolved in a solvent, such as polyurethane, polyvinyl chloride, polyacrylate or mixtures thereof. The ratio of fiber to binder is preferably between 1: 2 and 2: 1 and, in a particularly preferred manner, is equal to 1: 1 parts by weight.

O tecido não urdido impregnado e seco pode então ser submetido a abrasão por exemplo com papel de esmeril de um dos lados ou de ambos os lados para melhorar a superfície.The impregnated and dried nonwoven fabric can then be subjected to abrasion for example with emery paper on one side or on both sides to improve the surface.

Um velo apropriado para produzir correias de accionamento e transportadoras pode ter espessuras de 1 a 8 mm e preferivelmente 2-5 mm e um peso por unidade de área compreendido entre 300 e 6 000, preferivelmente, 1000 a 4 000 g/m2.A fleece suitable for producing drive belts and conveyors can be 1 to 8 mm and preferably 2-5 mm thick and have a weight per unit area between 300 and 6 000, preferably 1000 to 4 000 g / m 2 .

Um tecido não urdido condutor de acordo com o presente invento para correias de accionamento e transportadoras compreende um velo de fibras preferivelmente sintéticas que foi mecanicamente fortalecido, ligantes e carga, corantes e agentes de vulcanização, em que a mistura de fibras contém 1 a 10% em peso de fibras condutoras de aço, de grafite, de lã ou fibras revestidas com prata ou que contêm cobre.A conductive nonwoven fabric according to the present invention for drive belts and conveyors comprises a preferably synthetic fiber fleece which has been mechanically strengthened, binders and fillers, dyes and vulcanizing agents, wherein the fiber mixture contains 1 to 10% by weight of conductive fibers made of steel, graphite, wool or fibers coated with silver or containing copper.

- 5 59.961- 5 59,961

Ref: LOH 14/87 ΡΞRef: LOH 14/87 ΡΞ

Mod. 71 -10 000 βχ -4-87Mod. 71 -10 000 βχ -4-87

Outras características e vantagens do presente invento podem ser colhidas na seguinte descrição duma forma de realização preferida relacionada com os desenhos, nos quais a Figura 1 representa uma parte da correia de acordo com o invento em vista em planta; e a Figura 2 representa uma vista em corte da parte da correia da Figura 1.Other features and advantages of the present invention can be seen in the following description of a preferred embodiment related to the drawings, in which Figure 1 represents a part of the belt according to the invention in plan view; and Figure 2 represents a sectional view of the part of the belt of Figure 1.

Como mostra a Figura 1, uma correia de acordo com o presente invento é formada por uma camada de tecido não urdido (10) que, neste caso, possui 10% em peso de fibras de aço de 6 dtex. Na secção recta representada na Figura 2, as fibras de aço estão uniformemente distribuídas sobre toda a espessura do velo.As shown in Figure 1, a belt according to the present invention is formed by a layer of nonwoven fabric (10) which, in this case, has 10% by weight of 6 dtex steel fibers. In the straight section represented in Figure 2, the steel fibers are evenly distributed over the entire thickness of the fleece.

ExemploExample

Com um tecido de poliester ou tecido pregueado com um peso por unidade de área igual a aproximadamente 100 g/m de 6 fibras de 1100 dtex na direcção longitudinal e 3 fibras de 1100 dtex na direcção transversal são ponteadas em cada um dos lados de fibras de poliéster de 950 g/m compreendendo duas partes de 6,7 dtex e uma parte de 17 dtex, a que se misturam 2% em peso de fibras de aço de 9 dtex, de maneira que a espessura do velo é igual a 2000 g/m e o peso volúmico ê igual a 0,33 g/cm .With a polyester fabric or pleated fabric with a weight per unit area equal to approximately 100 g / m of 6 fibers of 1100 dtex in the longitudinal direction and 3 fibers of 1100 dtex in the transverse direction are stitched on each side of fibers of 950 g / m polyester comprising two parts of 6.7 dtex and a part of 17 dtex, to which 2% by weight of 9 dtex steel fibers are mixed, so that the thickness of the fleece is equal to 2000 g / The density is 0.33 g / cm.

velo de base ê subsequentemente impregnado com 100% em peso de látex de borracha de nitrilo/butadieno a que se adicionaram 25% em peso de CaCO^ como carga e 5% em peso de agentes de vulcanização formado a partir de enxofre e de óxido de zinco, seguidamente submetido a coagulação num forno de infravermelho, lavagem e escoamento e depois a secagem e vulcanização a 150°C. 0 tecido não urdido fortalecido com ligante é então submetido aThe base fleece is subsequently impregnated with 100% by weight of nitrile / butadiene rubber latex to which 25% by weight of CaCO4 was added as a filler and 5% by weight of vulcanizing agents formed from sulfur and oxide of zinc, then subjected to coagulation in an infrared oven, washing and draining and then drying and vulcanizing at 150 ° C. The nonwoven fabric strengthened with ligand is then subjected to

- 6 59.961- 6 59,961

Ref: LOH 14/87 PERef: LOH 14/87 PE

-tGJDCl388-tGJDCl388

Mod. 71 - 10 000 ax - 4-87 abrasão de ambos os lados com papel de esmeril de tamanho do grão igual a 120 que origina uma superfície lisa uniforme e uma espessura igual a 5,5 mm. 0 produto tem uma resistência superficial de 1 x 10 ohm à tensão aplicada de 100 V.Mod. 71 - 10 000 ax - 4-87 abrasion on both sides with emery paper with a grain size equal to 120 which gives a uniform smooth surface and a thickness equal to 5.5 mm. The product has a surface resistance of 1 x 10 ohm to the applied voltage of 100 V.

depósito do primeiro pedido para o invento acima descrito foi efectuado na República Federal da Alemanha em 22 de Julho de 1987 sob ο N2. P 37 24 328.4.The first application for the invention described above was filed in the Federal Republic of Germany on 22 July 1987 under ο N2. P 37 24 328.4.

Claims (4)

13 - Correia com tecido não urdido para correias de accionamento e de transporte, caracterizada pelo facto de a mistura de fibras do tecido não urdido conter aproximadamente 1 a 10% em peso de fibras electricamente condutoras.13 - Belt with nonwoven fabric for drive and transport belts, characterized by the fact that the fiber mixture of the nonwoven fabric contains approximately 1 to 10% by weight of electrically conductive fibers. 23 - Correia de acordo com a reivindicação 1, caracterizada pelo facto de a mistura de fibras conter fibras sintéticas e/ou naturais e/ou semissintéticas.23. The belt according to claim 1, characterized in that the fiber mixture contains synthetic and / or natural and / or semi-synthetic fibers. 3â - Correia de acordo com qualquer das reivindicações anteriores, caracterizada pelo facto de a resistência superficial a 100 V ser 10 a 10 , preferivelmente, 10^ a 10^ ohm.3. A belt according to any one of the preceding claims, characterized in that the surface resistance at 100 V is 10 to 10, preferably 10 ^ to 10 ^ ohm. 4- - Correia de acordo cora qualquer das reivindicações anteriores, caracterizada pelo facto de as fibras condutoras terem pelo menos um metal ou carbono elementar.4- Belt according to any of the preceding claims, characterized in that the conductive fibers have at least one elemental carbon or metal. 5â - Correia de acordo com qualquer das reivindicações, caracterizada pelo facto de ter um ou mais fios de elevada resistência mecânica e pequena extensão, filamentos, tecidos ou tecidos pregueados formados a partir de fibras sintéticas e/ou naturais e/ou semissintéti355 - belt according to any preceding claim, characterized by having one or more wires of high mechanical strength and small extent, filaments, woven or pleated fabric formed from synthetic and / or natural and / or semissintéti35 - 7 59.961- 7 59,961 Ref: LOH 14/87 PERef: LOH 14/87 PE 1 cas.1 cas. Lisboa, -1.JUL.1S88Lisbon, -1.JUL.1S88 Mod. 71 - 10 000 βχ - 4-β7Mod. 71 - 10,000 βχ - 4-β7 - 8 1/1- 8 1/1
PT87899A 1987-07-22 1988-07-01 WITHOUT STRETCH BELT FOR DRIVE BELT AND TRANSPORT BELT PT87899B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873724328 DE3724328A1 (en) 1987-07-22 1987-07-22 TAPE WITH FLEECE FOR DRIVE AND DRIVE BELTS, TRANSPORT AND CONVEYOR BELTS

Publications (2)

Publication Number Publication Date
PT87899A PT87899A (en) 1989-06-30
PT87899B true PT87899B (en) 1993-09-30

Family

ID=6332154

Family Applications (1)

Application Number Title Priority Date Filing Date
PT87899A PT87899B (en) 1987-07-22 1988-07-01 WITHOUT STRETCH BELT FOR DRIVE BELT AND TRANSPORT BELT

Country Status (9)

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EP (1) EP0300176B1 (en)
AT (1) ATE71051T1 (en)
DE (2) DE3724328A1 (en)
DK (1) DK330988A (en)
ES (1) ES2028181T3 (en)
FI (1) FI86894C (en)
IE (1) IE60892B1 (en)
NO (1) NO882960L (en)
PT (1) PT87899B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4126117C2 (en) * 1991-04-08 1994-04-07 Lohmann Gmbh & Co Kg Strength members for conveyor belts
IT1313522B1 (en) * 1999-05-27 2002-07-24 Antonio Antoniazzi ELASTIC CONVEYOR BELT WITH CONDUCTIVE FIBERS FOR STATIC DIELECTRICITY DISCHARGE AND STACKING MACHINE WITH SAID CARPET.
US20070167292A1 (en) * 2006-01-19 2007-07-19 Kuo Hai P Endless belt for treadmill
EP1813316A1 (en) * 2006-01-31 2007-08-01 Hai-Pin Kuo Endless belt for exercise treadmill

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8334233U1 (en) * 1984-03-01 Continental Gummi-Werke Ag Power transmission belts
DE1750073A1 (en) * 1963-03-27 1971-01-07 John Bright & Brothers Ltd belt
DE2016403A1 (en) * 1970-04-07 1971-10-28 Gebhard & Co AG, 5600 Wuppertal Base fabric for needled carpet and felt
FR2181564B1 (en) * 1972-04-28 1974-07-26 Boinet Manuf Gle Caoutch
US3998986A (en) * 1975-02-03 1976-12-21 Uniroyal Inc. Conveyor belt of rubber reinforced with stitch-bonded web fabric
US4154335A (en) * 1977-11-04 1979-05-15 Albany International Corp. Conveyor belting and method of manufacture
GB1589467A (en) * 1977-12-02 1981-05-13 Bright & Bros Ltd John Reinfrorced conveyor belting
DE2826953A1 (en) * 1978-06-20 1980-01-10 Bayer Ag Stable antistatic air filter - comprises needled felt made of acrylonitrile! polymer fibres with metal conducting coating
FR2511637A1 (en) * 1981-08-24 1983-02-25 Albany Int Corp METHOD FOR MANUFACTURING A CONVEYOR BELT, AND BELT THEREFOR

Also Published As

Publication number Publication date
FI883011A0 (en) 1988-06-22
EP0300176B1 (en) 1992-01-02
DK330988D0 (en) 1988-06-16
PT87899A (en) 1989-06-30
EP0300176A3 (en) 1990-04-11
NO882960D0 (en) 1988-07-01
ES2028181T3 (en) 1992-07-01
IE60892B1 (en) 1994-08-24
FI86894C (en) 1992-10-26
FI883011A (en) 1989-01-23
DE3724328A1 (en) 1989-02-09
IE881705L (en) 1989-01-22
ATE71051T1 (en) 1992-01-15
DE3724328C2 (en) 1990-02-15
DK330988A (en) 1989-01-23
EP0300176A2 (en) 1989-01-25
DE3867348D1 (en) 1992-02-13
FI86894B (en) 1992-07-15
NO882960L (en) 1989-01-23

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