US2784130A - Conveyor band for film printing machines - Google Patents

Conveyor band for film printing machines Download PDF

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US2784130A
US2784130A US447873A US44787354A US2784130A US 2784130 A US2784130 A US 2784130A US 447873 A US447873 A US 447873A US 44787354 A US44787354 A US 44787354A US 2784130 A US2784130 A US 2784130A
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Prior art keywords
layer
conveyor band
rubber
band
steel strips
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US447873A
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Kalin Erich
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Stoffel and Co
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Stoffel and Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D29/00—Producing belts or bands
    • B29D29/06—Conveyor belts
    • 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
    • B65G15/36—Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric the layers incorporating ropes, chains, or rolled steel sections
    • 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
    • B65G2201/02—Articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31707—Next to natural rubber
    • Y10T428/3171—With natural rubber next to second layer of natural rubber

Definitions

  • the endless conveyor band according to the invention is characterized in that it comprises several very thin steel bands extending side by side and an assembling layer of uniform thickness irremovably joined to the inside of the steel bands, this assembling layer extending over the whole width of conveyor band and having at least with regard to flexion in the longitudinal direction of the conveyor band a modulus of elasticity which is considerably smaller than that of the steel bands.
  • Figs. l to 4 show longitudinal section views of each of these embodiments together with the web to be printed and the layer of glue by which the web is xed thereto. The dimensions are enlarged approximately 50 times.
  • the endless conveyor band comprises several steel bands 1 extending side by side and having a thickness of only about 1A() mm.
  • These steel bands 1 are vulcanized onto a compound assembling layer 2 having a uniform thickness, extending over the whole width of the conveyor'band and comprising a special tissue embedded in soft rubber 3 and layers 4, 5 of hard rubber.
  • the warp threads 6 extending in the longitudinal direction of the conveyor band are made of a material having a low modulus of elasticity, e. g. of cotton or of an appropriate synthetic material.
  • the weft threads 7, however, are made of a material having a high modulus of elasticity, e. g. of glass or steel.
  • a very thin layer of hard rubber 8 has been deposited onto the outside of the steel bands 1.
  • a conveyor band so constructed has, when flexion in the longitudinal direction is considered, which occurs when the band runs over the deecting rolls and drums, a neutral zone which is located about in the midst of theI thickness of the steel bands 1. Since the latter are located at the outside of the conveyor band, the web to be printed, indicated at 10 and fixed by a layer of glue 9, is only subjected to weak compression and stretching effects. The deformations so caused would be several times greater if the steel bands were located on the inside of the conveyor band.
  • the second embodiment which is represented in Fig. 2 differs from that which has been described only by the fact that the layer of hard rubber 4 is somewhat thicker ⁇ and in that the layer of hard rubber 8 has been omitted.v
  • the steel bands 11 located at the outside of the endless conveyor band are vulcanised side by side onto an assembling layer 12 .
  • the special tissue 6, 7 in the embodiments of Figs. l and 2 and the wires 13 in the embodiment of Fig. 3 constitute reinforcements which act as such only in the transversal direction Iof the conveyor band and thereby hold together very closely the steel bands 1 and 1l, respectively.
  • FIG. 4 An embodiment without such reinforcement is shown in which the reference numeral 16 indicates the steel bands, 17 a compound layer for assembling them and 1S a very thin layer of hard rubber at the outside of the steel bands.
  • the assembling layer 17 consists of two layers of hard rubber 19 and of a layer of soft rubber 20 located between the layers 19.
  • the steel bands 1, 11 and 16, respectively may be made of such an alloy and be so ltreated that magnetic control signals may. be recorded thereon the utility of which has been mentioned hereab'ov'e.' s l What I claim is: 1
  • An endless conveyor band for film printing -machines comprising, in combination, a Aplurality of very thin steel strips extending longitudinally of the band in side by side relationship', and a laminated' assembling layer of uniform thickness irremovably joined* to the radially inner side only lof the steel strips, the radially outer side of said steel strips beingfree from said assembling layer., said assembling layer extending over the entire WidthV ofthe conveyor band and having. with respect to flexion vin the longitudinal direction of the conveyor band a modulus of elasticity which is substantially smaller than that of -tne' steel strips.
  • said assembling layer' includes”.transversely-extending reinforcing means.
  • said assembling loyer includes a first layer of rubber and at least one second layer of rubber having a hardness greater than the first layer of rubber, said first layer of rubber having embedded therein a transversely extending reinforcing means.
  • said assembling layer includes a first layer ofrubber and two second layers of rubber having a hardness greater than the first layer ⁇ of rubber, said second layers of rubber overlying the faces of the first layer of rubber.
  • An endless conveyor band for lm printing machines comprising, in combination, a plurality of very thin steel strips extending longitudinally of the band in side by side relationship3 and a laminated assembling layer of uniform thickness irremovablfy joined to the radially inner side only of the steel strips the radially outer side of said steel strips being free from said assembling layer, said assembling layer extending over the entire width of the conveyor band and having with respect to flexion in the longitudinal direction of the conveyor band a modulus of elasticity which is substantially smaller than that of the steel strips, said assembling layer including a first layer of rubber and at least one second layer of rubber having a hardness greater than the first layer of rubber, said second layer of rubber directly underlying said thin steel strips and said first layer of rubber underlying said second layer.
  • An endless conveyor band for film printing machines comprising, in combination, a plurality of very thin steel strips extending longitudinally of the band in side by side relationship, and a laminated assembling layer of uniform thickness irremovably joined to the radially inner side only of the steel strips, the radially outer side of said steel strips being free from said assembling layer, said assembling layer extending over the en tire Widthv of the conveyor band and having with respect to'liexion in the longitudinal direction of the conveyor band a.
  • said' assembling layer including a first layer of rubber and at least one second layer of rubber having a hardness greater than the first layer of rubber, said second layer of rubber directly underlying said thin steel strips andsaid first layer of rubber underlying said Vsecond layer, and said first layer of rubber having embedded therein a transversely-extending reinforcing means.
  • An endless conveyor band for film printing machines comprising, in combination, a plurality of very thin steel strips extending longitudinally ofthe band in side by side relationship, and al laminated assembling layer Vof uniform thickness irremovablry joined to the radially inner side only of the ste'el strips, the radially outer side of said steel strips being free from said assembling layer, said assembling layer extending over the entire width of the conveyor band and having with respect to flexion in the longitudinal direction of the conveyor band a modulus of elasticity which is substantially smaller than that of the steel strips, said assembling layer including a first layerof rubber and two second layers of rubber having a hardness greater than the first layer of rubber, said second layers of rubber overlying the faces of the rst layer of rubber and one of said second Vlayers directly underlying said thin steel strips.

Description

March 5, 1957 E. KLlN CONVEYOR BAND FOR FILM PRINTING MACHINES Filed Aug. 4,l 1954 CONVEYOR BAND FOR FILM PRINTING MACHINES Erich Klin, Netstal, Switzerland, assignor to Stotfel & Co., St. Gallen, Switzerland Application August 4, 1954, Serial No. 447,873
Claims priority, application Switzerland August 12, 1,953
11 Claims. (Cl. 154-521) In some film printing machines the web to be printed must be glued to an endless conveyor band because one must be sure that the web be not drawn wrong since it is very important that the successive imprints made on one denite repeat length of the web coincide with one another exactly. Film printing machines are known in which the web must perform several revolutions together with the conveyor band onto which it has been glued, in order that the several printing operations may be carried out. In these machines one definite repeat length which has received an imprint travels in a closed path back to the same printing station several times and during each such travel passes in adrying chamber over a great number of rolls and of drums each of which deliects the running path by 180. The diameter of these rolls and drums is chosen as small as possible to keep the dimensions of the drying chamber as small as possible.
Tests have shown that in order to avoid the web from being drawn wrong the main element of the conveyor band must be a very thin flexible steel band. However, such steel bands are only available on the market in widths not exceeding 30 cm. whilst the webs to be printed have often a width exceeding 100 cm. Therefore, I was compelled to use for the construction of the conveyor band several steel bands and to assemble the latter by an appropriate exible material.
In the rst compound conveyor bands which I have constructed, I put the steel bands on the inside and the layer of assembling material on the outside. The web to be printed was then glued onto this material. However, since this layer which consisted mainly of a web and of rubber had a thickness equal to several times that of the steel bands and a modulus of elasticity about a hundred times smaller than that of steel bands, the material located next to the outside surface of the conveyor band and the web glued to this surface were alternatively compressed and stretched on running over the dellecting rolls and drums located alternatively on the outside and inside of the conveyor band, whereby the web to be printed 'soon loosened at several places from the conveyor bands and could no longer be printed exactly and orderly.
Thus, a way had to be found to reduce to a minimum extent the several compressions and stretchings. r[he ideal would be to have the neutral zone of the bent cross section located right in the web to be printed. In practice this cannot be realised since the conveyor band must be very much stronger than the cloth to be printed to avoid the latter from being drawn wrong. However, my invention brings a solution which approaches the ideal very closely.
The endless conveyor band according to the invention is characterized in that it comprises several very thin steel bands extending side by side and an assembling layer of uniform thickness irremovably joined to the inside of the steel bands, this assembling layer extending over the whole width of conveyor band and having at least with regard to flexion in the longitudinal direction of the conveyor band a modulus of elasticity which is considerably smaller than that of the steel bands.
I have found in the course of the development and testing of the new conveyor bands that one or several of the several steel bands incorporated to it can be enabled to fulfil the task of a control tape responsible for repeatedly starting and stopping the band driving mechanism so that the repeat lengths following one another on the band or web come to be located exactly beneath the stencil or stencils of the iilm printing machine. This is obtained by having one or several of the steels provided with magnetic control signals as is well known for sound recording tapes.
The accompanying drawings represent, by way of ex,- ample, four embodiments of the invention.
Figs. l to 4 show longitudinal section views of each of these embodiments together with the web to be printed and the layer of glue by which the web is xed thereto. The dimensions are enlarged approximately 50 times.
In the embodiment of Fig. 1 the endless conveyor band comprises several steel bands 1 extending side by side and having a thickness of only about 1A() mm. These steel bands 1 are vulcanized onto a compound assembling layer 2 having a uniform thickness, extending over the whole width of the conveyor'band and comprising a special tissue embedded in soft rubber 3 and layers 4, 5 of hard rubber. In the mentioned tissue, the warp threads 6 extending in the longitudinal direction of the conveyor band are made of a material having a low modulus of elasticity, e. g. of cotton or of an appropriate synthetic material. The weft threads 7, however, are made of a material having a high modulus of elasticity, e. g. of glass or steel. A very thin layer of hard rubber 8 has been deposited onto the outside of the steel bands 1.
A conveyor band so constructed has, when flexion in the longitudinal direction is considered, which occurs when the band runs over the deecting rolls and drums, a neutral zone which is located about in the midst of theI thickness of the steel bands 1. Since the latter are located at the outside of the conveyor band, the web to be printed, indicated at 10 and fixed by a layer of glue 9, is only subjected to weak compression and stretching effects. The deformations so caused would be several times greater if the steel bands were located on the inside of the conveyor band.
The second embodiment which is represented in Fig. 2 differs from that which has been described only by the fact that the layer of hard rubber 4 is somewhat thicker` and in that the layer of hard rubber 8 has been omitted.v
In the third embodiment which is represented in Fig. 3, the steel bands 11 located at the outside of the endless conveyor band are vulcanised side by side onto an assembling layer 12 .which is Vconstituted by a layer of hard rubber 21 located immediately below the steel bands and in which reinforcing wires 13 extending in the transversal direction of the conveyor band are embedded, and furthermore by a layer of soft rubber 14 and by a layer of hard rubber 15.
The special tissue 6, 7 in the embodiments of Figs. l and 2 and the wires 13 in the embodiment of Fig. 3 constitute reinforcements which act as such only in the transversal direction Iof the conveyor band and thereby hold together very closely the steel bands 1 and 1l, respectively.
In some cases such reinforcement may be dispensed with. An embodiment without such reinforcement is shown in Fig. 4 in which the reference numeral 16 indicates the steel bands, 17 a compound layer for assembling them and 1S a very thin layer of hard rubber at the outside of the steel bands. The assembling layer 17 consists of two layers of hard rubber 19 and of a layer of soft rubber 20 located between the layers 19.
In all of` these embodiments the steel bands 1, 11 and 16, respectively (or one or some of them) may be made of such an alloy and be so ltreated that magnetic control signals may. be recorded thereon the utility of which has been mentioned hereab'ov'e.' s l What I claim is: 1
1.,An endless conveyor band for film printing -machines comprising, in combination, a Aplurality of very thin steel strips extending longitudinally of the band in side by side relationship', and a laminated' assembling layer of uniform thickness irremovably joined* to the radially inner side only lof the steel strips, the radially outer side of said steel strips beingfree from said assembling layer., said assembling layer extending over the entire WidthV ofthe conveyor band and having. with respect to flexion vin the longitudinal direction of the conveyor band a modulus of elasticity which is substantially smaller than that of -tne' steel strips.
2. An endless conveyor band as defined in claim l,
wherein said assembling layer' includes".transversely-extending reinforcing means.
3. An endless conveyor. band as defined. in claim 2, wherein said reinforcing means comprises metallic wires extending in the transversal direction of the conveyor band.
4. An endless conveyor band as defined in claim 2, wherein said reinforcing means consists of a fabric having weft' .threads formed from metallicv wires which ex tend in the transversal direction of the'conveyor band.
5. An endless conveyor band as defined in claim 2, wherein said reinforcing means consists of a fabric having weft threads formed from glass which extend inthe transversal direction of the conveyor band.
6. An endless conveyor band as definedV in claim 1, wherein said assembling layer includes a first layer of rubber and at least one second layer lof rubber having a hardness greater than the first layer of rubber.
7. An endless conveyor band as defined in claim 1, wherein said assembling loyer includes a first layer of rubber and at least one second layer of rubber having a hardness greater than the first layer of rubber, said first layer of rubber having embedded therein a transversely extending reinforcing means. i
8. An endless conveyor band as defined in claim l, wherein said assembling layer includes a first layer ofrubber and two second layers of rubber having a hardness greater than the first layer `of rubber, said second layers of rubber overlying the faces of the first layer of rubber.
9. An endless conveyor band for lm printing machines comprising, in combination, a plurality of very thin steel strips extending longitudinally of the band in side by side relationship3 and a laminated assembling layer of uniform thickness irremovablfy joined to the radially inner side only of the steel strips the radially outer side of said steel strips being free from said assembling layer, said assembling layer extending over the entire width of the conveyor band and having with respect to flexion in the longitudinal direction of the conveyor band a modulus of elasticity which is substantially smaller than that of the steel strips, said assembling layer including a first layer of rubber and at least one second layer of rubber having a hardness greater than the first layer of rubber, said second layer of rubber directly underlying said thin steel strips and said first layer of rubber underlying said second layer.
10. An endless conveyor band for film printing machines comprising, in combination, a plurality of very thin steel strips extending longitudinally of the band in side by side relationship, and a laminated assembling layer of uniform thickness irremovably joined to the radially inner side only of the steel strips, the radially outer side of said steel strips being free from said assembling layer, said assembling layer extending over the en tire Widthv of the conveyor band and having with respect to'liexion in the longitudinal direction of the conveyor band a. modulus of elasticity which is substantially smaller than that of the steel strips,` said' assembling layer including a first layer of rubber and at least one second layer of rubber having a hardness greater than the first layer of rubber, said second layer of rubber directly underlying said thin steel strips andsaid first layer of rubber underlying said Vsecond layer, and said first layer of rubber having embedded therein a transversely-extending reinforcing means.
l1. An endless conveyor band for film printing machines comprising, in combination, a plurality of very thin steel strips extending longitudinally ofthe band in side by side relationship, and al laminated assembling layer Vof uniform thickness irremovablry joined to the radially inner side only of the ste'el strips, the radially outer side of said steel strips being free from said assembling layer, said assembling layer extending over the entire width of the conveyor band and having with respect to flexion in the longitudinal direction of the conveyor band a modulus of elasticity which is substantially smaller than that of the steel strips, said assembling layer including a first layerof rubber and two second layers of rubber having a hardness greater than the first layer of rubber, said second layers of rubber overlying the faces of the rst layer of rubber and one of said second Vlayers directly underlying said thin steel strips.
References Cited in the file of`this patent UNITED STATES PATENTS Annerhed July 5, 1955

Claims (1)

1. AN ENDLESS CONVEYOR BAND FOR FILM PRINTING MACHINES COMPRISING, IN COMBINATION, A PLURALITY OF VERY THIN STEEL STRIPS EXTENDING LONGITUDINALLY OF THE BAND IN SIDE BY SIDE RELATIONSHIP, AND A LAMINATED ASSEMBLING LAYER OF UNIFORM THICKNESS IRREMOVABLY JOINED TO THE RADIALLY INNER SIDE ONLY OF THE STEEL STRIPS, THE RADIALLY OUTER SIDE OF SAID STEEL STRIPS BEING FREE FROM SAID ASSEMBLING LAYER, SAID ASSEMBLING LAYER EXTENDING OVER THE ENTIRE WIDTH OF THE CONVEYOR BAND AND HAVING WITH RESPECT TO FLEXION IN THE LONGITUDINAL DIRECTION OF THE CONVEYOR BAND A MODULUS OF ELASTICITY WHICH IS SUBSTANTIALLY SMALLER THAN THAT OF THE STEEL STRIPS.
US447873A 1953-08-12 1954-08-04 Conveyor band for film printing machines Expired - Lifetime US2784130A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077925A (en) * 1960-01-26 1963-02-19 Raybestos Manhattan Inc Suction box belt
US3297513A (en) * 1960-07-29 1967-01-10 Dunlop Rubber Co Belting
US3485707A (en) * 1966-05-31 1969-12-23 Goodrich Co B F Belt
FR2415005A1 (en) * 1978-01-18 1979-08-17 Baton Michel Endless belt printer with belt surface restorer - has cross roller supplied with adhesive to cover slowly moving belt with layers which fill belt pores
DE4418590A1 (en) * 1994-05-27 1995-11-30 Clouth Gummiwerke Ag Laminated flexible composite structure, esp. for conveyor belts and mfg. process
US20060234820A1 (en) * 2005-04-14 2006-10-19 Nitta Corporation Flat belt

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US680577A (en) * 1900-01-10 1901-08-13 Arthur C Ferguson Printer's blanket.
US1999550A (en) * 1933-02-23 1935-04-30 Samuel Heller Printing machine
US2114517A (en) * 1934-04-17 1938-04-19 Boston Woven Hose & Rubber Co Tension band
US2217133A (en) * 1938-03-16 1940-10-08 Firm Overlack & Co Kommanditge Machine for the multicolor printing of textile fabrics
US2254931A (en) * 1937-05-27 1941-09-02 Ibm Control record for accounting machines
US2313136A (en) * 1937-01-14 1943-03-09 Fischer Friedrich Ernst Apparatus for ascertaining sighting and firing errors in gunnery practice
US2511581A (en) * 1946-06-24 1950-06-13 Gail G Grigsby Conveyer belt
US2526324A (en) * 1944-08-08 1950-10-17 Lockheed Aircraft Corp Power transmitting belt
US2712332A (en) * 1952-03-14 1955-07-05 Sandvikens Jernverks Ab Conveyor belts and method of making them

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US680577A (en) * 1900-01-10 1901-08-13 Arthur C Ferguson Printer's blanket.
US1999550A (en) * 1933-02-23 1935-04-30 Samuel Heller Printing machine
US2114517A (en) * 1934-04-17 1938-04-19 Boston Woven Hose & Rubber Co Tension band
US2313136A (en) * 1937-01-14 1943-03-09 Fischer Friedrich Ernst Apparatus for ascertaining sighting and firing errors in gunnery practice
US2254931A (en) * 1937-05-27 1941-09-02 Ibm Control record for accounting machines
US2217133A (en) * 1938-03-16 1940-10-08 Firm Overlack & Co Kommanditge Machine for the multicolor printing of textile fabrics
US2526324A (en) * 1944-08-08 1950-10-17 Lockheed Aircraft Corp Power transmitting belt
US2511581A (en) * 1946-06-24 1950-06-13 Gail G Grigsby Conveyer belt
US2712332A (en) * 1952-03-14 1955-07-05 Sandvikens Jernverks Ab Conveyor belts and method of making them

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077925A (en) * 1960-01-26 1963-02-19 Raybestos Manhattan Inc Suction box belt
US3297513A (en) * 1960-07-29 1967-01-10 Dunlop Rubber Co Belting
US3485707A (en) * 1966-05-31 1969-12-23 Goodrich Co B F Belt
FR2415005A1 (en) * 1978-01-18 1979-08-17 Baton Michel Endless belt printer with belt surface restorer - has cross roller supplied with adhesive to cover slowly moving belt with layers which fill belt pores
DE4418590A1 (en) * 1994-05-27 1995-11-30 Clouth Gummiwerke Ag Laminated flexible composite structure, esp. for conveyor belts and mfg. process
US5958570A (en) * 1994-05-27 1999-09-28 Contitech Transportbandsysteme Gmbh Laminated composite body, in particular conveyor belt
US20060234820A1 (en) * 2005-04-14 2006-10-19 Nitta Corporation Flat belt

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