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WO1996013374A1 - Bande de traitement utilisee pour compacter des matieres en vrac - Google Patents

Bande de traitement utilisee pour compacter des matieres en vrac Download PDF

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Publication number
WO1996013374A1
WO1996013374A1 PCT/CH1995/000253 CH9500253W WO9613374A1 WO 1996013374 A1 WO1996013374 A1 WO 1996013374A1 CH 9500253 W CH9500253 W CH 9500253W WO 9613374 A1 WO9613374 A1 WO 9613374A1
Authority
WO
WIPO (PCT)
Prior art keywords
process belt
layers
layer
belt according
fabric
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.)
Ceased
Application number
PCT/CH1995/000253
Other languages
German (de)
English (en)
Inventor
Hans-Rudolf Gubler
Sibylle Schunk
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.)
Habasit AG
Original Assignee
Habasit AG
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 Habasit AG filed Critical Habasit AG
Publication of WO1996013374A1 publication Critical patent/WO1996013374A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/24—Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/44—Compression means for making articles of indefinite length
    • B29C43/48—Endless belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/24—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using an endless pressing band
    • B30B9/247—Pressing band constructions
    • 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
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/30—Belts or like endless load-carriers
    • B65G15/32—Belts or like endless load-carriers made of rubber or plastics
    • B65G15/34—Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0223—Vinyl resin fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/103—Metal fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • 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
    • B32B2375/00—Polyureas; Polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/04—Bulk

Definitions

  • the invention relates to a process belt for pre-compressing bulk materials.
  • Tapes of this type are used, inter alia, in the woodworking industry, especially for producing the generally known wood chipboard and fiberboard.
  • Comparable process belts are also used for the compression of other materials, e.g. in the production of panels from mineral materials.
  • the precompression of the materials mentioned usually takes place in a continuous manner, namely between an overhead and an underlying process belt.
  • a finished press cycle is usually carried out in a downstream press, under the influence of higher temperature and high pressure.
  • the process belts are endless and are guided or driven via associated deflection drums.
  • process belts of this type must meet special mechanical and chemical requirements in order to supply a pre-pressed chip cake or pressed material mats with a uniform structure on the output side. It is particularly important that the effect of tensile stress on the chip cakes or pressed material mats is strictly limited, as otherwise cracks could form in them. This is one of the main reasons that a suitable minimum mechanical stability must be required for a process belt.
  • a process belt must have sufficient chemical resistance; at the same time, it is required that all components of a pre-pressed chip cake can be easily and largely completely removed from the process belt.
  • the physical properties of the tape remain largely constant over the entire length of the tape, so that, in particular at a joint or seam of the tape, major changes (or even discontinuities) of locally determinable characteristic values are reduced to a minimum or entirely be avoided.
  • a process belt is designed as a ventilation press belt, which has at least four layers of a polyester fabric. Coatings made of highly cross-linked polyurethane are provided between and outside these fabric layers.
  • vent holes of a suitable size and spacing are made. Furthermore, the ventilation press belt described is antistatically equipped.
  • the material thickness of the tapes mentioned is not only necessary for reasons of a necessary compressive strength during the pre-pressing process. Due to a relatively low modulus of elasticity of the known process belt materials, a certain minimum thickness must also be provided in order to keep the elongation of the belt in the longitudinal direction as low as possible under all load conditions.
  • the tape to be provided should have further specific requirements for the surface properties, which are determined on the traction side (rear side) by a sufficiently large coefficient of static friction, and on the transport side (chip or granule side) in addition to a high abrasion and scratch resistance with generally good non-stick properties, sufficient chemical stability with regard to adhesive - or have binder components of the pressed material, such as formaldehyde resins, resins or glue materials of a natural or synthetic nature.
  • the invention is based on the knowledge that a process belt with the required properties can be realized if the number of fabric layers of such a belt is reduced and, in particular, only three layers are implemented without sacrificing the strength values of such a belt must be taken.
  • a medium fabric layer for the process belt which has a particularly high modulus of elasticity and is connected to surrounding fabric layers by means of suitable plastic layers.
  • such a process belt preferably has a layer structure that is symmetrical about the central fabric layer.
  • the required mechanical characteristic values can be achieved by the fact that in particular the warp threads of a middle fabric layer consist of either aramid, glass fiber, plastic-bound carbon fiber, aluminum, steel or ramie fiber and have the highest possible modulus of elasticity.
  • the weft threads of the middle fabric layer also referred to below as the backing layer, can consist of, for example, polyester material.
  • the modulus of elasticity of the outer fabric layers deviates from that of the middle fabric layer and has comparatively low values, so that these fabric layers are characterized by a certain flexibility.
  • a further measure to achieve the required properties is to combine the band into an endlessly circulating band by means of a special end connection, as a result of which a finger-shaped or interlocking connection is created. This makes a significant contribution to realizing an almost homogeneous characteristic of mechanical parameters for the process belt.
  • the necessary precise shaping of the tooth, finger or step-shaped ends of the strip starting material is carried out by means of punching or cutting devices provided for this purpose.
  • Process belts can be created that are 4 meters wide and more.
  • plastic layers provided according to the invention bring about a connection of the fabric layers with particularly favorable adhesive properties.
  • the invention is explained in more detail below, in a preferred embodiment with possible modifications, using the attached schematic drawings and tables.
  • FIG. 1 shows a layer structure of a process belt according to the invention
  • 3 - 5 further structures of a layer structure for process tapes according to the invention.
  • Table 1 is a list of preferred materials for the individual layers or fabric layers of the embodiments of a process belt and
  • Table 2 a compilation of the layer sequence or the layer structure of further embodiments of a process belt according to the invention.
  • FIG. 1 shows an essentially symmetrically arranged layer sequence for a process belt according to the invention.
  • This consists of the three fabric layers 4, 8 and 12, with respective weft threads 41, 81 and 121, which are not drawn to scale.
  • the layer (or layer) 8 has the highest modulus of elasticity in the indicated running direction L.
  • Layer 1 represents a cover layer (for the plastic layer 2 below) which consists of cross-linked! Polyurethane material (PU), for example also consists of high-solid polyurethane material and is preferred, but not necessarily antistatic or has a certain conductivity.
  • PU polyurethane material
  • a typical layer thickness for layer 1 is ⁇ 0.2 mm.
  • Layer 1 is firmly bonded to layer 2.
  • Layer 2 can also consist of the material PEBAX based on polyether block amide.
  • Layer 3 consists of a material with adhesion-promoting properties and is of comparatively small thickness. With this material, the underlying fabric layer 4 already mentioned is firmly connected to the layer 2.
  • the adhesion promoters are commercially available products which, depending on the intended A combination of layers 2 and 4 can be specified so that maximum adhesion between these layers is achieved.
  • the fabric layer or fabric layer 4 already mentioned has warp threads made of polyester (PES) or polyamide (PA) in the running direction of the belt, optionally made monofilament or multifilament. Alternatively, natural fibers, in particular made of cotton or ramie, are also provided for the fabric layer 4.
  • PES polyester
  • PA polyamide
  • natural fibers in particular made of cotton or ramie, are also provided for the fabric layer 4.
  • the weft threads 41 of the layer 4 likewise consist of chemical or natural fibers from the materials just mentioned.
  • the weft threads can have a significantly greater thickness or diameter than that of the warp threads. Since they are oriented essentially transversely to the running direction, they do not impair the favorable bending characteristics or flexibility of the treadmill.
  • Fabric layer 4 is connected to fabric layer 8 by means of the adhesion-promoting and comparatively thin layers 5 and 7 and the plastic layer 6 lying between them.
  • one of the materials already mentioned for layer 2 is provided for layer 6, but the use of the materials PA (polyamide) and NBR is of less importance.
  • the thickness of the layer 6 is typically 0.7 to 1.4 mm.
  • the fabric layer 8 is located in the neutral bending plane of the process belt or in its immediate vicinity.
  • This layer 8 is also referred to as a carrier fabric, and consists in warp and weft of clearly different materials.
  • the fibers of the warp threads of this layer 8 consist of aramid, glass, carbon (in particular plastic-coated carbon), aluminum, Steel or Ramie.
  • the base fabric Since 8 fibers with a very high modulus of elasticity, which is at least 20 kN / mm 2 and preferably have values of 250 kN / mm 2 and more, are provided for the warp threads of this fabric layer, the base fabric is given a correspondingly high modulus of elasticity in the running direction.
  • a multifilament embodiment is preferably provided for these warp threads of layer 8, which are aligned in the running direction of the process belt.
  • Monofilament or multifilament polyester threads, glass fibers or ramie fibers are provided for the weft threads of the carrier fabric layer 8.
  • the layers 9 to 11 largely correspond to the layers 7 to 5 in structure. If necessary, a material already mentioned for layer 2 is specified for layer 10. PVDF (polyvinylidene fluoride), for example, is suitable as the fluoropolymer material for layer 10.
  • the layer thicknesses of layers 9 to 11 also compare with those of layers 7 to 5, in particular in the case of a fully symmetrical layer structure of a process belt.
  • adhesion-promoting layer 13 which corresponds to layer 3.
  • the subsequent layers 14 and 15 are correspondingly comparable to layers 2 and 1. Materials are selected for these which have already been mentioned for the corresponding layers.
  • FIG. 2 shows the layer structure of a particularly preferred exemplary embodiment. This largely corresponds to the exemplary embodiment according to FIG. 1, but is not completely symmetrical since layer 15 is omitted, so that special and advantageous contact properties of the process belt with associated drive or deflection rollers result.
  • Table 1 The preferred materials for the individual layers of this embodiment are shown in Table 1, which also shows the material properties for warp and weft threads of the individual fabric layers.
  • the layers 2, 6, 10 and 14 preferably consist of a uniform material, it is advantageous to choose a similar material composition for the adhesion-promoting layers 7 and 9, but adapted to the specific purpose as for adhesion-promoting layers 3, 5, 11 and 13. 3 shows the layer structure of a further exemplary embodiment according to the invention.
  • This process belt has a layer structure similar to that shown in FIG. 2.
  • a cover layer 1 is provided, which covers the fabric layer 4 with respect to the material to be pressed.
  • this layer (as in the aforementioned cases) is called the top coat and consists of highly cross-linked polyurethane material. It is preferably provided with an antistatic treatment by adding conductive substances and advantageously has a surface conductivity.
  • the other layers correspond to those from FIGS. 1 and 2.
  • the layer structure of a further exemplary embodiment according to FIG. 4 is similar to that of the previous figures.
  • layer 1 is omitted here, so that the belt has an open fabric on the side of the material to be pressed, which supports a ventilation function of the process belt.
  • FIG. 5 shows the layer structure of a further exemplary embodiment with a structure similar to that shown in FIGS. 3 and 4.
  • a cover layer 1 is provided from one of the materials already mentioned for such a layer.
  • the opposite surface of this band has an open fabric layer 12, which consists of the materials already described for such a fabric layer.
  • Such a construction is advantageous if the process belt has a perforation that is regular or statistically distributed according to predetermined parameters, so that air to be removed is passed through the perforation and through the fabric layer 12.
  • a perforation can be introduced by means of high-energy laser radiation.
  • Another embodiment (not shown) provides channel-like structures for air to be discharged by providing the surface on the material to be pressed with suitable grooves or grooves.
  • FIG. 6 shows the top view of a transverse end connection of a process belt according to the invention. This splicing, which interlocks like a finger or tooth, enables the endless assembly of wide process belts.
  • the ends of a precisely cut amount of roll material are precisely contoured using a punch.
  • the ends contoured in this way are placed in a special, inexpensive heating and pressing device and welded to form an endless belt, the weldability of the thermoplastic layers 2, 6, 10, 14 being used in particular.
  • the band can alternatively or additionally be carried out in such a way that its layers at the two ends of a cut piece are exposed stepwise over the band thickness and then connected to one another. In this way it is possible to provide a step-like as well as finger-shaped end connection.
  • tissue layers 4 and 12 respectively indicate whether they are in the running direction of the ribbon oriented warp threads or weft threads perpendicular to them.
  • one of the materials specified in the respective associated line is specified for the individual layers 1 to 15. so that, despite a uniform underlying structure, a sufficient variability is made available by specifying the layer area and the materials of the individual layers.
  • Table 2 shows the layer structure of preferred embodiments, specifically for variants 1 to 9, of which variants 1, 2, 5, 6 and 8 have already been described by FIGS. 1, 2, 3, 4 and 5, respectively.
  • Variant 3 is similar to variant 2; however, the top layer (top coat) 1 is omitted.
  • Variant 4 is similar to variant 5, but has an additional top line (reference number 15 in FIG. 1) on the back.
  • Variant 7 is similar to variant 8, but lacks the backstroke (reference numeral 15 in FIG. 5).
  • Variant 9 denotes a special embodiment, which is characterized by fabric layers exposed on both sides, corresponding to fabric layers 4, 8 and 12 in FIG. 1).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Belt Conveyors (AREA)
  • Laminated Bodies (AREA)

Abstract

Une bande de traitement utilisée pour compacter des matières en vrac comprend trois couches de tissu (4, 8, 12) mutuellement espacées et reliées par des couches intermédiaires (5, 6, 7, 9, 10, 11). Selon leur utilisation, les couches de tissu sont pourvues de couches intermédiaires supplémentaires (2, 3, 13, 14) ou de couches de revêtement (1, 15). La couche centrale de tissu (8) a des fils de chaîne ayant un module d'élasticité particulièrement élevé et est constituée de préférence de matériaux de type aramide. Les deux couches extérieures de tissu (4, 12) ont, dans le sens de la longueur de la bande, un module d'élasticité sensiblement inférieur à celui de la couche centrale de tissu (8).
PCT/CH1995/000253 1994-10-31 1995-10-30 Bande de traitement utilisee pour compacter des matieres en vrac Ceased WO1996013374A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH324794 1994-10-31
CH3247/94-7 1994-10-31

Publications (1)

Publication Number Publication Date
WO1996013374A1 true WO1996013374A1 (fr) 1996-05-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1995/000253 Ceased WO1996013374A1 (fr) 1994-10-31 1995-10-30 Bande de traitement utilisee pour compacter des matieres en vrac

Country Status (1)

Country Link
WO (1) WO1996013374A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997014557A1 (fr) * 1995-10-17 1997-04-24 Habasit Ag Bande de boite pliante multicouche
WO2005032983A1 (fr) * 2003-09-29 2005-04-14 Forbo International S.A. Bande multicouche comportant une couche porteuse
EP1712813A2 (fr) 2005-04-14 2006-10-18 Nitta Corporation Courroie plate
WO2014015355A1 (fr) * 2012-07-24 2014-01-30 Berndorf Band Gmbh Procédé pour structurer une courroie de presse

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944060A (en) * 1973-01-12 1976-03-16 Karl Hartmann Transversely stiff conveyor belt
DE2635116A1 (de) * 1976-08-04 1978-02-09 Ver Seidenwebereien Ag Transportband
US4371580A (en) * 1982-01-26 1983-02-01 Morrison Company, Inc. Three-ply belting material
US4705161A (en) * 1986-08-21 1987-11-10 The Goodyear Tire & Rubber Company Heat resistant belt
US4752282A (en) * 1983-01-06 1988-06-21 Habasit Ag Flat drive belt
DE4031171A1 (de) * 1990-10-03 1992-04-09 Siempelkamp Gmbh & Co Pressenanlage fuer das pressen von pressgutmatten im zuge der herstellung von spanplatten
EP0489694A1 (fr) * 1990-12-05 1992-06-10 Habasit AG Bande de processus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944060A (en) * 1973-01-12 1976-03-16 Karl Hartmann Transversely stiff conveyor belt
DE2635116A1 (de) * 1976-08-04 1978-02-09 Ver Seidenwebereien Ag Transportband
US4371580A (en) * 1982-01-26 1983-02-01 Morrison Company, Inc. Three-ply belting material
US4752282A (en) * 1983-01-06 1988-06-21 Habasit Ag Flat drive belt
US4705161A (en) * 1986-08-21 1987-11-10 The Goodyear Tire & Rubber Company Heat resistant belt
DE4031171A1 (de) * 1990-10-03 1992-04-09 Siempelkamp Gmbh & Co Pressenanlage fuer das pressen von pressgutmatten im zuge der herstellung von spanplatten
EP0489694A1 (fr) * 1990-12-05 1992-06-10 Habasit AG Bande de processus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997014557A1 (fr) * 1995-10-17 1997-04-24 Habasit Ag Bande de boite pliante multicouche
WO2005032983A1 (fr) * 2003-09-29 2005-04-14 Forbo International S.A. Bande multicouche comportant une couche porteuse
EP1712813A2 (fr) 2005-04-14 2006-10-18 Nitta Corporation Courroie plate
EP1712813A3 (fr) * 2005-04-14 2007-05-02 Nitta Corporation Courroie plate
WO2014015355A1 (fr) * 2012-07-24 2014-01-30 Berndorf Band Gmbh Procédé pour structurer une courroie de presse
US9751359B2 (en) 2012-07-24 2017-09-05 Berndorf Band Gmbh Method for structuring a press belt

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