WO2010097478A1 - Seamless knit belt - Google Patents

Seamless knit belt Download PDF

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Publication number
WO2010097478A1
WO2010097478A1 PCT/EP2010/052571 EP2010052571W WO2010097478A1 WO 2010097478 A1 WO2010097478 A1 WO 2010097478A1 EP 2010052571 W EP2010052571 W EP 2010052571W WO 2010097478 A1 WO2010097478 A1 WO 2010097478A1
Authority
WO
WIPO (PCT)
Prior art keywords
body section
rib portions
treated
composite
seamless belt
Prior art date
Application number
PCT/EP2010/052571
Other languages
French (fr)
Inventor
Eun Kyung Lee
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
Priority to CA2753720A priority Critical patent/CA2753720A1/en
Priority to EP10706230.9A priority patent/EP2401214B1/en
Priority to JP2011551499A priority patent/JP5326000B2/en
Priority to CN201080009504.XA priority patent/CN102356032B/en
Priority to DK10706230.9T priority patent/DK2401214T3/en
Priority to ES10706230T priority patent/ES2435806T3/en
Publication of WO2010097478A1 publication Critical patent/WO2010097478A1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
    • D04B1/225—Elongated tubular articles of small diameter, e.g. coverings or reinforcements for cables or hoses
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/10—Patterned fabrics or articles
    • D04B1/12—Patterned fabrics or articles characterised by thread material

Definitions

  • the present invention pertains generally to endless belts and particularly to seamless knit belts.
  • Seamless belts are typically used where extreme flexibility or exact dimensions are required. Some common applications for seamless belts include paper and currency processing, packaging, business machines, fiber optics, general power transmission or the like. Unlike other endless belts, there is no splice or seam where the opposite ends are connected. The seamless belts are formed on tubular machines. For seamless knit belts, there is a well known issue with regard to curling along the edges because of the direction of the knitted loops. Accordingly, there is a need for a method of making seamless knit belts that addresses edge curling.
  • the present invention meets the above-described need by providing a seamless belt according to the independent claim 1 and a method of making a seamless knit belt according to the independent claim 8. Preferred embodiments will emerge from the dependent claims.
  • a seamless belt has a machine direction and a transverse direction.
  • the seamless belt comprises a body section formed from a tubular knit material having a first stiffness and a pair of rib portions disposed on opposite sides of the body section.
  • the rib portions are formed from a tubular knit material having a second stiffness that is greater than the first stiffness.
  • the body section is treated.
  • a further aspect of the invention relates to a method, which method includes forming two longitudinal rib sections that are formed from a different material than the body of the knit composite.
  • the rib sections are formed during the tubular knitting process and then the body of the knit composite is run through a polymeric treating system. After the body is treated, the rib sections are trimmed from the edges and the resulting product is a treated seamless knit belt.
  • the rib portions of the seamless belt according to the invention are knitted from monofilament yarns .
  • the rib portions of the seamless belt according to the invention are formed integrally with the body section during a single tubular knitting process.
  • the rib portions of the seamless belt according to the invention have a different knit pattern than the body section.
  • the body section of the seamless belt according to the invention is treated with a polymer.
  • the body section of the seamless belt according to the invention is treated with the polymer by coating.
  • the pair of rib portions of the seamless belt according to the invention are knitted from different materials.
  • FIG. 1 is a perspective view of a prior art tubular knit composite
  • FIG. 2 is a perspective view of an embodiment of a tubular knit composite according to the present invention.
  • Fig. 3 is a block diagram showing the steps of the method of the present invention.
  • one type of seamless belt 10 is constructed with a tubular knit composite.
  • the composite is produced on a tubular knitting machine as known to those of ordinary skill in the art based on this disclosure.
  • the knit composite is first knit into a tubular shape with a pair of edges 13, 16 disposed in spaced apart parallel relation. Because of the well known tendency of knit tubing to curl at the edges (indicated by arrows 19) due to the direction of the knitted loops, there can be difficulties with further processing of the composite.
  • the body of the composite may be treated with a rubber, silicone or similar material for some belt applications.
  • the knit composite may be run in a machine direction indicated by arrow 22 and run through a treating system containing the polymeric material.
  • the body of the composite may be treated in a rotational method such as knife coating as will be evident to those of ordinary skill in the art based on this disclosure.
  • the seamless belt 10 of the present invention is divided into three sections in the transverse direction indicated by arrow 26.
  • the first section 28 is a rib portion that is knitted from a different material such as a monofilament yarn to increase the stiffness of the composite and prevent edge curling in this area.
  • the second or body section 31 is constructed of a different material than the first section 28, and in some cases the second section 31 comprises a different knit pattern.
  • the body section 31 is constructed according to the specifications for the final seamless knit belt product.
  • the third section 34 is also knitted from a monofilament or other material that is selected for greater stiffness and resistance to edge curling. After the composite knit substrate is formed as described, the body of the composite is treated with a polymeric material as described above.
  • the web may be conveyed through the treating system in the machine direction indicated by arrow 25 by rotating it around drums or sprockets that support the web at opposite ends.
  • the first section 28 and the third section 34 are trimmed away by an edge trimming device as will be evident to those of ordinary skill in the art based on this disclosure.
  • the resulting product is a treated seamless knit belt.
  • a block diagram shows the steps of the method of the present invention.
  • step 37 the composite tubular knit is formed with a body section surrounded by two rib sections extending from the body section in the transverse direction.
  • step 40 the body of the composite is treated with a polymeric coating substance.
  • step 43 the body is cured in step 43. After the curing step, the edges are trimmed in the final step 46.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)
  • Belt Conveyors (AREA)

Abstract

A method for making a seamless knit belt (10) includes forming two longitudinal rib sections (28, 34) that are formed from a different material than the body (31) of the belt. The rib sections (28, 34) are formed during the tubular knitting process and then the body (31) of the knit composite is run through a polymeric treating system. After the body (31) is treated, the rib sections (28, 34) are trimmed from the edges and the resulting product is a coated seamless knit belt (10).

Description

SEAMLESS KNIT BELT
CROSS-REFERENCE TO RELATED APPLICATION
[0001] The present invention claims priority benefit of U.S. Provisional Patent Application No. 61/208,851 filed on February 27, 2009, which is incorporated herein by reference.
FIELD OF THE INVENTION
[0002] The present invention pertains generally to endless belts and particularly to seamless knit belts.
BACKGROUND OF THE INVENTION
[0003] Seamless belts are typically used where extreme flexibility or exact dimensions are required. Some common applications for seamless belts include paper and currency processing, packaging, business machines, fiber optics, general power transmission or the like. Unlike other endless belts, there is no splice or seam where the opposite ends are connected. The seamless belts are formed on tubular machines. For seamless knit belts, there is a well known issue with regard to curling along the edges because of the direction of the knitted loops. Accordingly, there is a need for a method of making seamless knit belts that addresses edge curling.
SUMMARY OF THE INVENTION
[0004] The present invention meets the above-described need by providing a seamless belt according to the independent claim 1 and a method of making a seamless knit belt according to the independent claim 8. Preferred embodiments will emerge from the dependent claims.
[0005] The essence of the invention consists in the following:
[0006] A seamless belt has a machine direction and a transverse direction. The seamless belt comprises a body section formed from a tubular knit material having a first stiffness and a pair of rib portions disposed on opposite sides of the body section. The rib portions are formed from a tubular knit material having a second stiffness that is greater than the first stiffness. The body section is treated.
[0007] A further aspect of the invention relates to a method, which method includes forming two longitudinal rib sections that are formed from a different material than the body of the knit composite. The rib sections are formed during the tubular knitting process and then the body of the knit composite is run through a polymeric treating system. After the body is treated, the rib sections are trimmed from the edges and the resulting product is a treated seamless knit belt.
[0008] Preferably, the rib portions of the seamless belt according to the invention are knitted from monofilament yarns .
[0009] Preferably, the rib portions of the seamless belt according to the invention are formed integrally with the body section during a single tubular knitting process. [0010] Preferably, the rib portions of the seamless belt according to the invention have a different knit pattern than the body section.
[0011] Preferably, the body section of the seamless belt according to the invention is treated with a polymer.
[0012] Preferably, the body section of the seamless belt according to the invention is treated with the polymer by coating.
[0013] Preferably, the pair of rib portions of the seamless belt according to the invention are knitted from different materials.
BRIEF DESCRIPTION OF THE DRAWING FIGURES
[0014] The invention is illustrated in the drawings in which like reference characters designate the same or similar parts throughout the figures of which:
[0015] Fig. 1 is a perspective view of a prior art tubular knit composite;
[0016] Fig. 2 is a perspective view of an embodiment of a tubular knit composite according to the present invention; and,
[0017] Fig. 3 is a block diagram showing the steps of the method of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0018] Turning to Fig. 1, one type of seamless belt 10 is constructed with a tubular knit composite. The composite is produced on a tubular knitting machine as known to those of ordinary skill in the art based on this disclosure. The knit composite is first knit into a tubular shape with a pair of edges 13, 16 disposed in spaced apart parallel relation. Because of the well known tendency of knit tubing to curl at the edges (indicated by arrows 19) due to the direction of the knitted loops, there can be difficulties with further processing of the composite. For example, after the tubular composite is formed, the body of the composite may be treated with a rubber, silicone or similar material for some belt applications. During the treating process, the knit composite may be run in a machine direction indicated by arrow 22 and run through a treating system containing the polymeric material. The body of the composite may be treated in a rotational method such as knife coating as will be evident to those of ordinary skill in the art based on this disclosure.
[0019] Turning to Fig. 2, the seamless belt 10 of the present invention is divided into three sections in the transverse direction indicated by arrow 26. The first section 28 is a rib portion that is knitted from a different material such as a monofilament yarn to increase the stiffness of the composite and prevent edge curling in this area. The second or body section 31 is constructed of a different material than the first section 28, and in some cases the second section 31 comprises a different knit pattern. The body section 31 is constructed according to the specifications for the final seamless knit belt product. The third section 34 is also knitted from a monofilament or other material that is selected for greater stiffness and resistance to edge curling. After the composite knit substrate is formed as described, the body of the composite is treated with a polymeric material as described above. The web may be conveyed through the treating system in the machine direction indicated by arrow 25 by rotating it around drums or sprockets that support the web at opposite ends. After the treating step is completed and the polymer has cured, the first section 28 and the third section 34 are trimmed away by an edge trimming device as will be evident to those of ordinary skill in the art based on this disclosure. After the first and third sections 28 and 34 are trimmed away from the body section 31, the resulting product is a treated seamless knit belt.
[0020] Turning to Fig. 3, a block diagram shows the steps of the method of the present invention. In step 37, the composite tubular knit is formed with a body section surrounded by two rib sections extending from the body section in the transverse direction. In the next step 40, the body of the composite is treated with a polymeric coating substance. Next, the body is cured in step 43. After the curing step, the edges are trimmed in the final step 46.
[0021] While the invention has been described in connection with certain embodiments, it is not intended to limit the scope of the invention to the particular forms set forth, but, on the contrary, it is intended to cover such alternatives, modifications, and equivalents as may be included within the scope of the invention as defined by the appended claims.

Claims

1. Seamless belt (10) having a machine direction and a transverse direction (26), the seamless belt comprising: a body section (31) formed from a tubular knit material having a first stiffness; a pair of rib portions (28, 34) disposed on opposite sides of the body section (31), the rib portions (28, 34) formed from a tubular knit material having a second stiffness that is greater than the first stiffness; and, wherein the body section (31) is treated.
2. Seamless belt according to claim 1, wherein the rib portions (28, 34) are knitted from monofilament yarns.
3. Seamless belt according to claim 1 or 2, wherein the rib portions (28, 34) are formed integrally with the body section (31) during a single tubular knitting process.
4. Seamless belt according to any one of claims 1 to 3, wherein the rib portions (28, 34) have a different knit pattern than the body section (31) .
5. Seamless belt according to any one of claims 1 to 4, wherein the body section (31) is treated with a polymer.
6. Seamless belt according to claim 5, wherein the body section (31) is treated with the polymer by coating.
7. Seamless belt according to any one of claims 1 to 6, wherein the pair of rib portions (28, 34) are knitted from different materials.
8. Method of forming a seamless belt (10), comprising: knitting a tubular composite (37) having a body section (31) formed from a tubular knit material having a first stiffness, a pair of rib portions (28, 34) disposed on opposite sides of the body section (31), the rib portions (28, 34) formed from a tubular knit material having a second stiffness that is greater than the first stiffness to form a tubular knit composite; and, treating (40) at least a portion of the tubular knit composite with a polymeric material to form a treated tubular knit composite; curing (43) the treated tubular knit composite web to form a cured tubular knit composite; and trimming the edges (46) of the cured tubular knit composite to remove the rib portions (28, 34) from the body section (31) .
9. Method according to claim 8, wherein the rib portions (28, 34) are knitted from monofilament yarns.
10. Method according to claim 8 or 9, wherein the rib portions (28, 34) are formed integrally with the body section (31) during a single tubular knitting process.
11. Method according to any one of claims 8 to 10, wherein the rib portions (28, 34) have a different knit pattern than the body section (31) .
12. Method according to any one of claims 8 to 11, wherein the body section (31) is treated with a polymer.
13. Method according to claim 12, wherein the body section is treated with the polymer by coating.
4. Method according to any one of claims 8 to 13, wherein the pair of rib portions (28, 34) are knitted from different materials.
PCT/EP2010/052571 2009-02-27 2010-03-01 Seamless knit belt WO2010097478A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CA2753720A CA2753720A1 (en) 2009-02-27 2010-03-01 Seamless knit belt
EP10706230.9A EP2401214B1 (en) 2009-02-27 2010-03-01 Process of forming a seamless knit belt
JP2011551499A JP5326000B2 (en) 2009-02-27 2010-03-01 Seamless belt forming method
CN201080009504.XA CN102356032B (en) 2009-02-27 2010-03-01 Seamless knit belt
DK10706230.9T DK2401214T3 (en) 2009-02-27 2010-03-01 Method of designing a seamless knit belt
ES10706230T ES2435806T3 (en) 2009-02-27 2010-03-01 Procedure to form a seamless knitted belt

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20885109P 2009-02-27 2009-02-27
US61/208,851 2009-02-27

Publications (1)

Publication Number Publication Date
WO2010097478A1 true WO2010097478A1 (en) 2010-09-02

Family

ID=42269502

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/052571 WO2010097478A1 (en) 2009-02-27 2010-03-01 Seamless knit belt

Country Status (8)

Country Link
US (2) US8607593B2 (en)
EP (1) EP2401214B1 (en)
JP (1) JP5326000B2 (en)
CN (1) CN102356032B (en)
CA (1) CA2753720A1 (en)
DK (1) DK2401214T3 (en)
ES (1) ES2435806T3 (en)
WO (1) WO2010097478A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014037774A3 (en) * 2012-09-05 2014-05-01 Maschinenfabrik Rieter Ag Belt for a lap winder for producing a lap roll

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2330405A (en) * 1941-04-14 1943-09-28 L H Gilmer Co Power transmission belt
US6572505B1 (en) * 1999-11-12 2003-06-03 The Gates Corporation Power transmission belt using stabilized open mesh textile material in overcord for enhanced rubber penetration
WO2010013020A2 (en) * 2008-08-01 2010-02-04 Engineered Fibre Structures Ltd Sleeve for transdermal patches

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US3853017A (en) * 1973-11-06 1974-12-10 Dayco Corp Endless power transmission belt
JPH0525734A (en) * 1991-07-09 1993-02-02 Atsusato Kitamura Production of seamless tubular woven fabric
EP0655095B1 (en) * 1992-07-08 1996-11-27 TECNIT-Technische Textilien und Systeme GmbH Textile material made of woven knitted fabrics
DE9414344U1 (en) * 1994-09-03 1994-10-20 Mühlen Sohn GmbH & Co., 89134 Blaustein Woven belt for a corrugated cardboard machine
US5616090A (en) * 1995-09-18 1997-04-01 Mcgee, Jr.; James N. Bias cut, knit V-belt cover
US5645504A (en) * 1995-09-29 1997-07-08 The Gates Corporation Power transmission belt with teeth reinforced with a fabric material
JPH11130221A (en) * 1997-10-30 1999-05-18 Bando Chem Ind Ltd Conveyor belt and manufacture thereof
CA2391109C (en) * 1999-11-12 2007-06-05 The Gates Corporation Power transmission belt with tubular knit overcord
JP2002211727A (en) * 2001-01-19 2002-07-31 San D Cloth:Kk Conveyor belt
US20040166753A1 (en) * 2002-06-10 2004-08-26 Millward Dan B. Modification of fabric fibers
US7523626B2 (en) * 2004-10-01 2009-04-28 Saint-Gobain Performance Plastics Corporation Conveyor belt
JP2006144847A (en) * 2004-11-17 2006-06-08 Bando Chem Ind Ltd Resin belt
JP2008156111A (en) * 2006-12-26 2008-07-10 Nitta Ind Corp Molded belt prevented from being warped and method of manufacturing the same
CN201056410Y (en) * 2007-03-14 2008-05-07 骆方宏 Silica gel coating non-joint conveying belt used for fabric luster finishing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2330405A (en) * 1941-04-14 1943-09-28 L H Gilmer Co Power transmission belt
US6572505B1 (en) * 1999-11-12 2003-06-03 The Gates Corporation Power transmission belt using stabilized open mesh textile material in overcord for enhanced rubber penetration
WO2010013020A2 (en) * 2008-08-01 2010-02-04 Engineered Fibre Structures Ltd Sleeve for transdermal patches

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014037774A3 (en) * 2012-09-05 2014-05-01 Maschinenfabrik Rieter Ag Belt for a lap winder for producing a lap roll

Also Published As

Publication number Publication date
ES2435806T3 (en) 2013-12-23
US20100218562A1 (en) 2010-09-02
DK2401214T3 (en) 2013-11-11
EP2401214B1 (en) 2013-08-21
CN102356032A (en) 2012-02-15
CN102356032B (en) 2014-05-07
CA2753720A1 (en) 2010-09-02
US20140137606A1 (en) 2014-05-22
JP2012519122A (en) 2012-08-23
EP2401214A1 (en) 2012-01-04
US8607593B2 (en) 2013-12-17
JP5326000B2 (en) 2013-10-23

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