WO1993017161A1 - Bande pouvant etre raccordee, comportant une matiere plastique, et son procede de fabrication - Google Patents

Bande pouvant etre raccordee, comportant une matiere plastique, et son procede de fabrication Download PDF

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Publication number
WO1993017161A1
WO1993017161A1 PCT/SE1993/000173 SE9300173W WO9317161A1 WO 1993017161 A1 WO1993017161 A1 WO 1993017161A1 SE 9300173 W SE9300173 W SE 9300173W WO 9317161 A1 WO9317161 A1 WO 9317161A1
Authority
WO
WIPO (PCT)
Prior art keywords
band
web
eyelets
region
join
Prior art date
Application number
PCT/SE1993/000173
Other languages
English (en)
Inventor
Per-Ola Lidar
Original Assignee
Scandiafelt Ab
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 Scandiafelt Ab filed Critical Scandiafelt Ab
Publication of WO1993017161A1 publication Critical patent/WO1993017161A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/10—Seams thereof
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D3/00—Woven fabrics characterised by their shape
    • D03D3/04—Endless fabrics

Definitions

  • the present invention relates to a joinable band com- prised of a textile web which is provided on at least one side and over a part of its width with a quantity of plastic material which fills-out the fabric structure of the textile web at least partially as a result of being thermally softened process, wherein one end of the band includes at the terminal edge thereof joining band joining eyelets or loops which are formed in the textile web and which are active in connecting with band-joining eyelets or loops similarly provided on the other, meet ⁇ ing end of the web.
  • the invention also relates to a suitable method of manufacturing the band.
  • Bands or belts which comprise a textile web can be filled-out with a thermoplastic material which imparts functional properties to the band, such as adapted frictional properties, adhesion, density, surface smoothness, wear strength, etc.
  • the material may be filled-out in the fabric structure across the full width of the textile web, or solely along two longitudinally extending edges thereof for instance, so as to protect the edge margins of the textile web.
  • Bands of this nature often have long lengths, which can cause diffi ⁇ culties in manufacture. When the band ends are joined together so as to obtain an endless band, difficulties are experienced in fitting the bands to the machine in which they are to be used. These difficulties can be alleviated, by making the bands joinable.
  • the join may be achieved by means of end-eyelets which are brought into register with one another and a locking wire in ⁇ serted through the channel defined by the mutually registering eyelets.
  • the object of the present invention is to enable a joinable band to be provided with a plastic filling and to be fitted to a machine in a simple manner, and so that the material in the region of the join can be given the same properties as the remainder of the band subse ⁇ quent to fitting the band to a machine.
  • Figures la, lb illustrate respectively the two meeting ends of a band that has not yet been joined and a joined band .
  • Figures 2a, 2b are views similar to Figure 1 and show respectively a band that has not yet been joined and a joined band, said bands having been completely filled- out with plastic material.
  • Figures 3a, 3b and 3c illustrate a band which has not yet been joined, a fitted band, and a joined band.
  • Figures 4a, 4b and 4c are views similar to Figures 3a, 3b and 3c, but with the difference that the fabric structure of the entire band has been filled-out with plastic material.
  • Figures 5a, 5b and 5c illustrate bands whose fabric structure has been completely filled-out with plastic material and which include two mutually meeting join covering flaps.
  • Figures 6a, 6b and 6c illustrate respective bands which have been coated on one side and where the fabric is protected by the plastic material.
  • Figures 7a, 7b, 7c illustrate a variant of the band shown in Figure 6 having two half-flaps instead of a single flap.
  • Figure la illustrates two mutually meeting ends of a joinable band.
  • the band fabric includes two layers of transverse threads 1 and longitudinally extending threads 2.
  • the ends of the longitudinally extending threads 2 are curved over so as to form eyelets or loops 3.
  • a locking wire 24 can be passed through the eyelets 3, so as to join the band ends together and therewith form an endless band.
  • the band includes a thermoplastic filling material which when softened will bind with the fabric structure.
  • the plastic material is shown in Figure 1 in the form of a layer 6, which partially fills the fabric structure but does not form a protective layer for the upper side of the textile web in Figure 1.
  • thermoplastic material is softened and allowed to fill the fabric structure, although in order to be able to join the band and to leave the eyelets 3 free, the thermoplastic material must not bind to or enclose the eyelets 3. This is because the eyelets must be capable of being brought into register with one another and a locking wire 4 inserted through the eyelets. Consequent ⁇ ly / a given region 5 of the eyelets 3 is left void of plastic material.
  • the regions 5 are shown in Figure la by a broken line which extends perpendicularly to the extension of the textile web and parallel with respec ⁇ tive end edges of the web.
  • the join region can be treated with a thermoplastic material such that the meeting layers 6 will be joined together to form a continuous layer 6 which extends over the region of the join and thus also over the locking wire and the eyelets 3.
  • the ends.of the band can be joined together by means of the locking eyelets 3 and the locking wire 4, so as to form an endless band, and the band then placed under tension, although it will be observed that the thermoplastic material has not yet filled-out the fabric structure.
  • the thermoplastic material is now applied to the tensioned band and sub ⁇ jected to heat treatment, so that the material will "run” down into the fabric structure and fill-out the structure, either completely or partially, as illustrat ⁇ ed in Figures la and lb.
  • the band is tensioned during this process, in order to prevent deformation of the band.
  • the plastic material is prevent- ed from penetrating into or adhering to the region 5 of the eyelets 3.
  • thermoplas ⁇ tic material may be applied to this region of the band.
  • the layer 6 will therefore extend along the entire band with the exception of a narrow region at the location of the join.
  • the locking wire 4 is thus free and can be withdrawn from the eyelets so as to mutually separate the band ends.
  • the band is later fitted to a ma ⁇ chine, the ends of the bands are brought together and the locking wire 4 is inserted through the eyelets 3, in a conventional manner.
  • Heat can now be applied to the fitted band so that plastic material, optionally supple ⁇ mented with additional plastic material, is able to fill-out the fabric structure in the join region if so required.
  • the two mutually meeting ends of the layer 6 may be joined so as to obtain a continu ⁇ ous layer which also extends over the locking wire 4, as shown in Figure lb.
  • the fabric structure is filled totally with the thermoplastic material and the eyelets 3 have an exposed region 5 at both ends of the band.
  • the pro ⁇ cedure earlier described with reference to Figure 1 can be applied when manufacturing this variant of the band, although it is also possible to fill-out the whole of the fabric structure with thermoplastic material in the joined state of the band without leaving an exposed region 5. Instead, a cut is made through the plastic material superficially over the locking wire 4 from both sides of the band, so that the locking wire 4 can be withdrawn from the eyelets and the two ends of the band separated before fitting the band to the machine. In order to make this possible, the seam must be so tight that an insignificant amount of thermoplastic material will be present in the region of the locking wire.
  • FIGs 3a, 3b and 3c illustrate a further variant.
  • the thermoplastic material 6 lies in the structure of the fabric, as in the earlier cases, but does not fill the fabric completely.
  • the eyelets 3 are not affected by the plastic material to any great extent.
  • the ends of the band are brought together and the locking wire 4 is inserted so as to form over the region of the join a relatively wide area which lacks plastic layer 6.
  • This region of the band is filled with a loose flap 7 which is heated so as to melt into the fabric structure and therewith complete the layer 6, as illustrated in Figure 3c.
  • FIG 4 illustrates a variant of the Figure 3 embodi ⁇ ment.
  • the whole of the fabric structure is filled-out with thermoplastic material in the form of the layer 6. Since the whole thickness of the fabric structure is to be filled-out after the two ends have been joined together, as shown in Figure 4a, a loose flap 7 is arranged on each side of the band. When the join has been made mechanically, these flaps are placed on respective sides of the join and then heated so that the molten plastic material will fill-out the entire fabric structure in the region of the join. The band will then have the form illustrated in Figure 4c.
  • the flaps 7 are thus made of the same thermoplastic material as that used to fill-out the remainder of the fabric structure in the form of the layer 6.
  • thermo ⁇ plastic material in the form of the layer 6, similar to the aforedescribed.
  • the exposed eyelet region 5 is large, as will be seen from Figures 5a and 5b.
  • a flap 8 has been provided at each end of the band. This flap is not melt-fused into the fabric structure, but physically hangs together with the layer 6 which is melted into the remainder of the structure.
  • the flaps 8 can be heat-softened and pressed down into the fabric struc ⁇ ture. In this way, the fabric structure in the region of the join will be entirely filled-out with plastic mate ⁇ rial and the band will have the appearance shown in Figure 5c.
  • the fabric structure is only partially filled with thermoplastic material.
  • the eyelets 3, however, have a large exposed region 5 and after joining the band ends together with the locking wire 4 it will be necessary to fill these regions with thermoplastic material to the same extent as the remainder of the band has been filled-out.
  • the left part of the band has been provided with a flap 9 which hangs physically together with the layer 6 on this side of the band. Subsequent to joining the band ends in accordance with Figure 6b, the flap can be melted into the fabric structure, so as to obtain the band configuration shown in Figure 6c. The thermoplastic layer 6 will then extend continuously over the region of the join.
  • Figure 7 illustrates a variant of the Figure 6 embodi ⁇ ment and differs from this latter embodiment in that instead of one flap 9 on one end of the band, there are provided two flaps 10 which together cover the join region when the two ends of the band are brought togeth ⁇ er, in accordance with Figure 7c. Subsequent to having joined the ends of the band, there is obtained a contin- uous band which has a fully penetrating covering layer 6 in accordance with Figure 7b. It will be understood that embodiments other than the aforedescribed exemplifying embodiments are conceivable.
  • thermoplastic material in the form of a layer, is intended to fill-out only a part of the fabric structure.

Landscapes

  • Treatment Of Fiber Materials (AREA)
  • Package Frames And Binding Bands (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Une bande pouvant être raccordée se compose d'une bande de textile pourvue au moins sur une face et sur une partie de sa largeur d'une quantité de matière thermoplastique qui, lorsqu'elle est assouplie par la chaleur, gonfle la structure du tissu au moins partiellement. Les bords des extrémités respectives de la bande possèdent des ÷illets (3) de raccordement qui sont formés dans la bande de textile et qui ont une action mutuelle avec des ÷illets de raccordement formés de manière similaire dans une extrémité de raccordemnt de la bande de façon à former un raccord détachable. Pour permettre à la bande de s'adapter facilement à une machine et d'obtenir dans la région du raccord les mêmes propriétés que dans le reste de la bande, on n'effectue aucun apport de matière plastique sur les éléments de raccordement de la bande de textile (3) le long d'une région (5) dont la largeur calculée à partir du bord terminal et vers l'intérieur de la bande de textile correspond au moins à l'extension des ÷illets (3) sur cette partie qui a une action mutuelle avec les ÷illets (3) de l'extrémité de raccordement e la bande de textile.
PCT/SE1993/000173 1992-02-28 1993-02-26 Bande pouvant etre raccordee, comportant une matiere plastique, et son procede de fabrication WO1993017161A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9200609-7 1992-02-28
SE9200609A SE9200609D0 (sv) 1992-02-28 1992-02-28 Skarvbart band av plastiskt material jaemte foerfarande foer dess tillverkning

Publications (1)

Publication Number Publication Date
WO1993017161A1 true WO1993017161A1 (fr) 1993-09-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1993/000173 WO1993017161A1 (fr) 1992-02-28 1993-02-26 Bande pouvant etre raccordee, comportant une matiere plastique, et son procede de fabrication

Country Status (2)

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SE (1) SE9200609D0 (fr)
WO (1) WO1993017161A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0695827A2 (fr) 1994-06-09 1996-02-07 Albany International Corp. Procédé de jonction de bandes de transfert et autres bandes pour le traitement du papier
WO2007126635A1 (fr) * 2006-04-10 2007-11-08 Albany International Corp. Courroie laminée à couture
EP2050846A3 (fr) * 2007-10-16 2010-02-24 Helmbach GmbH & Co.KG Bande de transport destinée au transport de marchandises en pièce et son procédé de fabrication
US7776187B2 (en) 2007-03-23 2010-08-17 Voith Patent Gmbh Belt having a non-linear seam and a method of on-machine joining of belt ends

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108733A2 (fr) * 1982-11-02 1984-05-16 Nordiskafilt Ab Feutre comportant une jonction à boucle, à l'usage de la section de presse des machines à papier, et son procédé de fabrication

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108733A2 (fr) * 1982-11-02 1984-05-16 Nordiskafilt Ab Feutre comportant une jonction à boucle, à l'usage de la section de presse des machines à papier, et son procédé de fabrication

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0695827A2 (fr) 1994-06-09 1996-02-07 Albany International Corp. Procédé de jonction de bandes de transfert et autres bandes pour le traitement du papier
EP0695827A3 (fr) * 1994-06-09 1997-05-21 Albany Int Corp Procédé de jonction de bandes de transfert et autres bandes pour le traitement du papier
WO2007126635A1 (fr) * 2006-04-10 2007-11-08 Albany International Corp. Courroie laminée à couture
US8640862B2 (en) 2006-04-10 2014-02-04 Albany International Corp. Seam-on laminated belt
CN104088964A (zh) * 2006-04-10 2014-10-08 阿尔巴尼国际公司 有缝层叠带
US7776187B2 (en) 2007-03-23 2010-08-17 Voith Patent Gmbh Belt having a non-linear seam and a method of on-machine joining of belt ends
EP2050846A3 (fr) * 2007-10-16 2010-02-24 Helmbach GmbH & Co.KG Bande de transport destinée au transport de marchandises en pièce et son procédé de fabrication

Also Published As

Publication number Publication date
SE9200609D0 (sv) 1992-02-28

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