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WO1995011795A1 - Procede de fabrication de bandes de convoyeurs et d'autres types de bandes stratifiees soudees sur les bords - Google Patents

Procede de fabrication de bandes de convoyeurs et d'autres types de bandes stratifiees soudees sur les bords Download PDF

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Publication number
WO1995011795A1
WO1995011795A1 PCT/DK1994/000397 DK9400397W WO9511795A1 WO 1995011795 A1 WO1995011795 A1 WO 1995011795A1 DK 9400397 W DK9400397 W DK 9400397W WO 9511795 A1 WO9511795 A1 WO 9511795A1
Authority
WO
WIPO (PCT)
Prior art keywords
edge
belt
groove
base web
effected
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/DK1994/000397
Other languages
English (en)
Inventor
Erik Steffenaur
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.)
Polymax AS
Original Assignee
Polymax AS
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 Polymax AS filed Critical Polymax AS
Priority to AU79900/94A priority Critical patent/AU7990094A/en
Publication of WO1995011795A1 publication Critical patent/WO1995011795A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
    • B29C70/76—Moulding on edges or extremities of the preformed part
    • B29C70/763—Moulding on edges or extremities of the preformed part the edges being disposed in a substantial flat plane
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/0026—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor an edge face with strip material, e.g. a panel edge
    • B29C63/003—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor an edge face with strip material, e.g. a panel edge continuously
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/137—Beaded-edge joints or bead seals
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of a sinusoidal wave
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
    • B29C66/4722—Fixing strips to surfaces other than edge faces
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0044—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping edges or extremities
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/681—Component parts, details or accessories; Auxiliary operations
    • B29C70/683—Pretreatment of the preformed part, e.g. insert
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/40—Applying molten plastics, e.g. hot melt
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73115—Melting point
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
    • B29C66/7311—Thermal properties
    • B29C66/73115—Melting point
    • B29C66/73116—Melting point of different melting point, i.e. the melting point of one of the parts to be joined being different from the melting point of the other part
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0072—Roughness, e.g. anti-slip
    • B29K2995/0073—Roughness, e.g. anti-slip smooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/709—Articles shaped in a closed loop, e.g. conveyor belts
    • B29L2031/7092—Conveyor belts

Definitions

  • a method of manufacturing edge sealed conveyor belts and other laminated belt products is provided.
  • the present invention relates to a method of manu ⁇ facturing conveyor belts of the type having one or more lavers of a substantially non-stretchable base web c. ered one- or double sided by a layer a thermoplastic material, whereby at least the top or outer side of the belt appears with a tight coating of a suitably friction producing type, optionally with a stamped pattern in the surface of the coating, and even with the side edges of the belt covered by a suitable plastics material.
  • the cut belt edges may be sealed be a welding-on of previously produced plastic cords, the melting point of which is lower than that of the coatings of the belt, such that the welding of the cords or cord profiles can be effected without any significant distortion impact on the outer coating layer or layers on the belt.
  • the conditions for obtaining an effective welding will of course not be the best, and because the edge cord forms a projecting side portion of the belt it will be exposed to contact with various guiding means and thus to noticeable influences, whereby the edge chord may get loose, if it is not welded with utmost care.
  • the edge sealing may be effected with increased safety of a durable result, and according to the invention this is achievable by carrying out, upon the edge cutting of the belt, a cutting-in into the belt edge so as to cut back the base web to a short distance from the belt edge, whereafter the sealing material is applied in being extruded into the cutting track.
  • the sealing material may be anchored against the inwardly facing surface of the cover layer or layers on the belt, where ⁇ by, for example, it is easier to obtain a perfect weld ⁇ ing without damaging the exterior surface of the cover layer.
  • the sealing material will be at least partly embedded in a carrier groove in the belt edge, whereby it will be much better stabilized than when just welded to the cut edge face of the belt.
  • Fig. 1 is a perspective view illustrating the manu ⁇ facture of a belt according to the invention.
  • Fig. 2 is a corresponding view illustrating a sub ⁇ sequent edge treatment of the belt.
  • Fig. 3 is a similar view illustrating a further edge treatment.
  • Figs. 4-8 are sectional views of belts with diffe ⁇ rently shaped edge areas
  • Fig. 9 is a perspective view of a belt having late ⁇ ral support means
  • Fig. 10 is a perspective view further illustrating the edge treatment
  • Fig. 11 is a plan top view of an apparatus according to the invention.
  • a conveyor belt is produced by coating a base web 2 with surface layers 4 of a thermo ⁇ plastic material.
  • Raw belts of this design can be made with different widths, whereafter ready made belts of still further different widths can be made by longitudi ⁇ nal cutting of the edge portions of the raw belt, as illustrated by the subsequent belt piece 6.
  • the cut side edges 8 will show a sharp stratification of base web 2 and coatings 4.
  • the base web 2 will have exposed edges, thus with associated possibilities of projecting fibres, between which various foreign matter may be deposited, giving rise to environmental problems which should be avoided by a sealing of the edges.
  • a groove 10 in each of the cut edges 8 of the belt e.g. as shown in Fig. 2, such that the base web is removed from these areas.
  • This may be done with rotating cutter discs 12 during a firm guiding of the belt, e.g. between supporting rollers 14.
  • One of the discs may be position adjustable for enabling working of belts of different widths.
  • the prepared belt is moved through an apparatus for introducing a suitable filler material 18 into the groove, by means of a nozzle 16 or otherwise.
  • a suitable filler material 18 into the groove, by means of a nozzle 16 or otherwise.
  • this may be done concurrently at both edges with the belt in a lying position.
  • the sealing material may have a higher melting point than the material of the layers 34 or at least be heated to a temperature higher than the latter melting point, as the process may then relatively easily be controlled such that a local melting occurs at the said edge surface areas, without this leaving noticeably traces in the outer or visible surface of the cover layers.
  • the filling 18 may bulge somewhat out from the belt edge, see Fig. 4, or it may additionally cover the remaining edge surface as shown in Fig. 5.
  • Fig. 6 it is shown that the groove 10 may be shaped with a pointed bottom, while in Fig. 7 it is shown that it may be softly curved, though in that case a welding con ⁇ nection will not exhibit any large area of contact with the outer coatings 4.
  • Fig. 7 it is shown that it may be possible to use for the edge sealing an extruded string 20 thicker than the belt 6.
  • FIG. 8 An embodiment that is advantageous in practice is shown in Fig. 8; after the formation of the groove 10 the remaining, outstanding edge parts are just pressed together and directly joined by welding, preferably with an associated template shaping of the reshaped outer edge of the belt.
  • edge strip is glued to or welded into the surface coating of the conveyor belt, whereby the lower edge will be effec ⁇ tively sealed, but it will be appreciated that according to the invention even the outer edge can be sealed, this being done prior to the strip being wave-shaped. With dotted lines it is indicated that the edge strip may be premounted on a narrow carrier belt, which is then welded to the conveyor belt. To the extent such edge or carrier strips are relevant, laminated produces, even that kind of products will be comprised by the inven ⁇ tion.
  • Fig. 10 it is shown that the belt edge, after passing the cutter disc 12, may pass a heater 22, which, in any suitable manner, will heat the belt edge locally just before it reaches the extruder nozzle 16, here with the belt in a horizontal position. It is indicated that the nozzle 16 at its rear side projects slightly into the groove 8, such that the latter is expanded a little immediately prior to the introduction of the extrusion string 18. Thereafter the belt edge passes an outer pressing or shaping roller 24, which will press the string 18 somewhat inwardly, and then a pair of pressure rollers 26 pressing the expanded belt edge back into its normal thickness, whereby a good intrusion of the string material into the groove 8 will be ensured.
  • thermo sensor 28 At the front side of the extruder nozzle a thermo sensor 28 is shown, which controls the effect of the heater 22 as well as the effect of a non-illustrated heater at the nozzle head itself.
  • the apparatus shown in Fig. 11 comprises two opposed, mutually staggered apparatus units 30 and 32, each provided with the said main parts 12,16,24,26 for concurrent working of the two belt edges.
  • the unit 32 is mounted on a chassis 34, which, by means of screw spindles 36, may be adjusted to different belt widths.
  • suitable polymers such as PVC, PU and optionally PE, will be applicable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Belt Conveyors (AREA)

Abstract

L'inconvénient des bandes de convoyeurs stratifiées consistant en une ou plusieurs couches dont une bande de base non étirable, et en une couche de finition en matière thermoplastique est que ladite bande de base s'effiloche sur les bords et devient ainsi peu hygiénique. Jusqu'à maintenant, on soudait un cordon thermoplastique sur les bords pour les sceller. Avec le procédé selon l'invention, on obtient une soudure nettement améliorée en découpant une rainure (8) dans le bord, au niveau de la bande de base, et en extrudant dans ladite rainure une charge (18) de matière thermoplastique de sorte qu'elle colle aux faces latérales de cette dernière, à l'intérieur de celle-ci.
PCT/DK1994/000397 1993-10-27 1994-10-27 Procede de fabrication de bandes de convoyeurs et d'autres types de bandes stratifiees soudees sur les bords Ceased WO1995011795A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU79900/94A AU7990094A (en) 1993-10-27 1994-10-27 A method of manufacturing edge sealed conveyor belts and other laminated belt products

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK931205A DK120593D0 (da) 1993-10-27 1993-10-27 Fremgangsmaade til fremstilling af kantforseglede transportbaand og andre laminerede baandprodukter
DK1205/93 1993-10-27

Publications (1)

Publication Number Publication Date
WO1995011795A1 true WO1995011795A1 (fr) 1995-05-04

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Application Number Title Priority Date Filing Date
PCT/DK1994/000397 Ceased WO1995011795A1 (fr) 1993-10-27 1994-10-27 Procede de fabrication de bandes de convoyeurs et d'autres types de bandes stratifiees soudees sur les bords

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AU (1) AU7990094A (fr)
DK (1) DK120593D0 (fr)
WO (1) WO1995011795A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009065367A1 (fr) * 2007-11-21 2009-05-28 Forbo Siegling Gmbh Procédé de fabrication d'une bande transporteuse/d'entraînement
WO2012052354A3 (fr) * 2010-10-22 2012-06-14 Kraussmaffei Technologies Gmbh Installation et procédé de production d'éléments en sandwich dotés d'un isolant intégré
KR102016933B1 (ko) * 2019-04-23 2019-09-02 진재경 분진 발생 차단을 위한 컨베이어벨트의 직물층 절단분리장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4667812A (en) * 1981-05-08 1987-05-26 Joy Manufacturing Company Conveyor belt assembly and method
DE3339589C2 (fr) * 1983-11-02 1988-12-01 Phoenix Ag, 2100 Hamburg, De
DE3807814C1 (en) * 1988-03-10 1989-03-23 G. Siempelkamp Gmbh & Co, 4150 Krefeld, De Process for the continuous production of a conveyor belt from rubber
EP0521245A1 (fr) * 1991-06-29 1993-01-07 FORBO International S.A. Bande transporteuse et procédé pour sa fabrication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4667812A (en) * 1981-05-08 1987-05-26 Joy Manufacturing Company Conveyor belt assembly and method
DE3339589C2 (fr) * 1983-11-02 1988-12-01 Phoenix Ag, 2100 Hamburg, De
DE3807814C1 (en) * 1988-03-10 1989-03-23 G. Siempelkamp Gmbh & Co, 4150 Krefeld, De Process for the continuous production of a conveyor belt from rubber
EP0521245A1 (fr) * 1991-06-29 1993-01-07 FORBO International S.A. Bande transporteuse et procédé pour sa fabrication

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009065367A1 (fr) * 2007-11-21 2009-05-28 Forbo Siegling Gmbh Procédé de fabrication d'une bande transporteuse/d'entraînement
US8657978B2 (en) 2007-11-21 2014-02-25 Forbo Siegling Gmbh Method for producing a transport/drive belt
WO2012052354A3 (fr) * 2010-10-22 2012-06-14 Kraussmaffei Technologies Gmbh Installation et procédé de production d'éléments en sandwich dotés d'un isolant intégré
KR102016933B1 (ko) * 2019-04-23 2019-09-02 진재경 분진 발생 차단을 위한 컨베이어벨트의 직물층 절단분리장치

Also Published As

Publication number Publication date
AU7990094A (en) 1995-05-22
DK120593D0 (da) 1993-10-27

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