US20020104626A1 - Pull cord for coverings for architectural openings and method of making same - Google Patents

Pull cord for coverings for architectural openings and method of making same Download PDF

Info

Publication number
US20020104626A1
US20020104626A1 US10/113,687 US11368702A US2002104626A1 US 20020104626 A1 US20020104626 A1 US 20020104626A1 US 11368702 A US11368702 A US 11368702A US 2002104626 A1 US2002104626 A1 US 2002104626A1
Authority
US
United States
Prior art keywords
cord
covering
urethane
braided
yarns
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.)
Abandoned
Application number
US10/113,687
Other languages
English (en)
Inventor
Kenneth Witherell
Klas Ivarsson
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.)
TRUNILS AB
Turnils AB
Original Assignee
Turnils 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 Turnils AB filed Critical Turnils AB
Priority to US10/113,687 priority Critical patent/US20020104626A1/en
Assigned to HUNTER DOUGLAS INC. reassignment HUNTER DOUGLAS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IVARSSON, KLAS TURE, WITHERELL, KENNETH W.
Assigned to TRUNILS AB reassignment TRUNILS AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUNTER DOUGLAS INC.
Publication of US20020104626A1 publication Critical patent/US20020104626A1/en
Priority to US10/256,503 priority patent/US20030085004A1/en
Assigned to TURNILS AB reassignment TURNILS AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUNTER DOUGLAS INC.
Abandoned legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/14—Machine details; Auxiliary devices for coating or wrapping ropes, cables, or component strands thereof
    • D07B7/145—Coating or filling-up interstices
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/06—Braid or lace serving particular purposes
    • D04C1/12—Cords, lines, or tows
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/162—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1096—Rope or cable structures braided
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/2087—Jackets or coverings being of the coated type
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2064—Polyurethane resins
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/40—Machine components
    • D07B2207/404—Heat treating devices; Corresponding methods
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2084—Mechanical controls, e.g. door lashes

Definitions

  • the present invention relates generally to pull cords used in coverings for architectural openings and more particularly to a braided pull cord and the method of making the cord.
  • the control cord or the like typically depends from one end of a headrail for the covering and extends into the headrail through a friction brake and subsequently through carrier elements and around a plurality of pulleys and the like that are associated with the operation of the covering.
  • the control cord is frictionally engaged at a number of locations and, depending upon the frequency of operation of the covering and the abrasiveness of the elements with which the cord comes into contact, the control elements can easily deteriorate.
  • a typical fiber based cord used in coverings for architectural openings is braided from polyester fibers, with the cords typically including sixteen carrier fibers. After braiding of the cord, it is heat treated and wound on storage rolls before being incorporated into a covering product. The braid is relatively tight.
  • the cord of the present invention is made from high tensile strength fibers with low abrasion characteristics, such as polyethylene fibers.
  • the fibers are braided in an eight-carrier braid that is wound under very high tension and ultimately finished with a urethane coating that is heat cured.
  • the resultant product has provided a wear cycle of many times that achieved with state-of-the-art cords thereby almost removing the problem of manufacturers in having to re-cord coverings for architectural openings.
  • high tensile strength fibers with low abrasion such as might be polyethylene fibers
  • yarn bobbins eight of the yarn bobbins are then utilized in a conventional braiding apparatus to braid the cord.
  • the braided cord is held under tension and passed through a two-stage heat setting process wherein a urethane coating is applied to the braided cord and the coating is heat cured in the final stage. After the second stage of heating, the cord is wound onto spools for storage until they are strung into coverings for architectural openings.
  • FIG. 1 is a block diagram illustrating the steps in the process of making the cord in accordance with the present invention.
  • FIG. 2 is a fragmentary diagrammatic isometric view showing yarn from which the cord will be braided being passed from supply spools under tension to bobbins.
  • FIG. 3 is a fragmentary isometric illustrating the bobbins carrying the yarns under tension and being positioned in a braiding apparatus and with the braided cord being wrapped on a storage spool.
  • FIG. 4 is a diagrammatic view showing yarn from storage spools being passed through a two-stage process for coating the yarns with urethane and heat curing the urethane on the yarn before accumulating the yarns on storage spools.
  • FIG. 5 is a fragmentary elevation showing the braided cord in accordance with the present invention.
  • FIG. 6 is a diagrammatic elevation showing a prior art braided cord.
  • FIG. 1 The method of making a braided control cord for use in coverings for architectural openings in accordance with the present invention is illustrated in a block diagram in FIG. 1. It will there be appreciated that fibers or yarns from which the cord is to be braided are first unwound from spools on which they are supplied and then wound under high tension onto bobbins. From the bobbins, eight yarns are braided into a cord also under high tension and the braided cord is subsequently wound on a transfer spool.
  • the cords are unwound from the transfer spools under tension and fed into a treating apparatus where they are coated with urethane and immediately heat cured in a two-stage process so that the urethane coating is dried and fully cured on the braided cords. After the coating has been heat cured, the yarn is stored on storage spools from which it can be removed when incorporating the cord into an operating mechanism for a covering for architectural openings.
  • a device 10 for unwinding yarn 12 from preformed spools 14 of yarn is shown in series with a conventional tensioning apparatus 16 for the yarns and a conventional apparatus 18 for wrapping the yarns on bobbins 20 under tension.
  • a conventional tensioning apparatus 16 for the yarns
  • a conventional apparatus 18 for wrapping the yarns on bobbins 20 under tension.
  • the yarns are passed through an additional but conventional washer tensioner (not shown) before they are received by the tensioning apparatus 16 .
  • the device 10 for unwinding the yarn from the spools 14 can be seen to include a plurality of spindles 22 on which the spools 12 of yarn are disposed and the yarn is threaded through low friction ceramic guides 24 associated with each spool so that they can be passed individually to the conventional tensioner (which is not shown) before passing on to the tensioning apparatus 16 .
  • the tensioning apparatus they are tensioned in a conventional manner with washer tensioners 25 so that the yarns 12 when passed down to the bobbins 20 are fed to and wound on the bobbins under tension.
  • Each of the devices and apparatuses 10 , 16 and 18 are conventional items such as manufactured by Ratera of Spain.
  • the yarns 12 have a high tensile strength in the range of 28-35 grams/denier, and preferably 30 grams/denier, and have low coefficients of friction, low abrasion characteristics and are durable from a flex fatigue standpoint.
  • Examples of yarns that would be suitable for this purpose are Kevlar manufactured by DuPont in the United States, Nomex manufactured by DuPont, Twaron manufactured by Akzo of The Netherlands, Dyneema manufactured by DSM of Holland or Spectra manufactured by the Allied Signal Division of Honeywell, Inc., Orlando, Va.
  • the yarn or fibers are preferably polyethylene.
  • the tension under which the yarns 12 are wound on the bobbins 20 is preferably in the range of 115 to 140 grams and desirably 120 grams.
  • the bobbins 20 with the yarn 12 wound thereon under tension are placed in a braiding apparatus 26 of a conventional type such as of the type manufactured by Ratera of Spain.
  • a braiding apparatus 26 of a conventional type such as of the type manufactured by Ratera of Spain.
  • eight yarns are braided into a cord 27 and after braiding, wound onto a transfer spool 28 .
  • the denier of the yarns is preferably in the range of 275 to 375, which is greater than the denier of yarns typically braided into control cords, as can be evidenced by reference to FIGS. 5 and 6, with FIG. 5 being a cord braided in accordance with the present invention and FIG. 6 a prior art braided cord.
  • the transfer rolls of braided cord are then operatively connected to a treatment apparatus 30 (FIG. 4) for final treatment of the cord.
  • a treatment apparatus 30 (FIG. 4) for final treatment of the cord.
  • Each transfer spool 28 of cord is rotatably mounted on a bracket 32 on the upstream end of the apparatus 30 so that the cord can be fed into and through the treatment apparatus under tension via a conventional tensioner 34 .
  • the tension in the cord is preferably in the range of 150-200 g, with 150 grams being ideal.
  • the braided cord 27 is first fed through a chamber 36 where the cord is padded with a urethane coating that is applied to the cord.
  • the chamber 36 is fed from a urethane reservoir 37 .
  • the coating might be either sprayed onto the cord or the cord might be drawn through a bath of the urethane in order to apply the desired coating to the cord.
  • the latter is preferred.
  • the cord is passed through a heating chamber or oven 38 where the urethane is dried.
  • the temperature in the heating chamber 38 is preferably in the range of 120-140° C. even though temperatures outside that range would work as it would primarily affect the drying time.
  • the cord is passed through another heating chamber 39 where the urethane is cured.
  • the temperature in the curing chamber 39 is preferably in the range of 100-120° C. even though, again, temperatures outside that range would work as the temperature primarily affects the curing time.
  • the total time for drying and curing should ideally be in the range of 60-120 seconds, with 90 seconds being desired.
  • the final braided cord is wrapped onto a storage spool 40 that is rotatably mounted on brackets 42 at the downstream end of the apparatus 34 .
  • the spool is removed and retained for later use in the assembly of a covering for an architectural opening.
  • the apparatus 30 for treating the cord with a urethane solution and curing the cord is conventional and may be of the type manufactured by Andersson Mek of Sweden.
  • the urethane solution is a mixture of urethane and water in a concentration of 10% urethane by volume.
  • the urethane is miscible in/with water and preferably itself comes from the chemical family of polyester, polyether polyurethane dispersions and can come from various sources but a urethane marketed under the designation Baypret DLV Dispersion Corporation by Bayer Corporation of Pittsburgh, Pa, has been found suitable for the cord of the present invention.
  • a cord formed in accordance with the present invention and as illustrated in FIG. 5, has been found to provide a wear cycle that is approximately ten times that of conventional cords that are presently in use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Textile Engineering (AREA)
  • Ropes Or Cables (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Blinds (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
US10/113,687 1999-09-07 2002-03-28 Pull cord for coverings for architectural openings and method of making same Abandoned US20020104626A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/113,687 US20020104626A1 (en) 1999-09-07 2002-03-28 Pull cord for coverings for architectural openings and method of making same
US10/256,503 US20030085004A1 (en) 1999-09-07 2002-09-26 Pull cord for coverings for architectural openings and method of making same

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US15282499P 1999-09-07 1999-09-07
US65599100A 2000-09-06 2000-09-06
US10/113,687 US20020104626A1 (en) 1999-09-07 2002-03-28 Pull cord for coverings for architectural openings and method of making same

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US65599100A Continuation 1999-09-07 2000-09-06

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/256,503 Continuation-In-Part US20030085004A1 (en) 1999-09-07 2002-09-26 Pull cord for coverings for architectural openings and method of making same

Publications (1)

Publication Number Publication Date
US20020104626A1 true US20020104626A1 (en) 2002-08-08

Family

ID=22544608

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/113,687 Abandoned US20020104626A1 (en) 1999-09-07 2002-03-28 Pull cord for coverings for architectural openings and method of making same

Country Status (3)

Country Link
US (1) US20020104626A1 (de)
EP (1) EP1083254A3 (de)
AU (1) AU768863B2 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010527413A (ja) * 2007-05-18 2010-08-12 カザール・ドラートザイルヴエルク・ザール・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 綱、プラスチック繊維と鋼線撚り線から成る組合わせ綱、及びプラスチック繊維と鋼線から成る組合わせ撚り線
US20150315730A1 (en) * 2014-05-05 2015-11-05 Cortland Line Co. Line for anchoring a hunting decoy
CN108729274A (zh) * 2018-06-26 2018-11-02 桐乡守敬应用技术研究院有限公司 一种高强防腐绳及其制备方法
EP3674058A4 (de) * 2017-08-21 2021-05-05 The Yokohama Rubber Co., Ltd. Verfahren und vorrichtung zur herstellung eines gummibeschichteten verdrillten drahtseils

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2239888A5 (de) * 1973-08-01 1975-02-28 Cordes Europ France
US4095404A (en) * 1975-10-09 1978-06-20 Hitco Method of manufacturing a high-strength, polyurethane-impregnated polyamide cable
US4534163A (en) * 1983-09-19 1985-08-13 New England Ropes, Inc. Rope or cable and method of making same
JPS6253495A (ja) * 1985-09-02 1987-03-09 帝国産業株式会社 複合紐状品
US4870887A (en) * 1988-03-18 1989-10-03 The Bentley-Harris Manufacturing Company Braided sleeve
JP3298370B2 (ja) * 1995-07-04 2002-07-02 東洋紡績株式会社 ブラインドコード用組紐

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010527413A (ja) * 2007-05-18 2010-08-12 カザール・ドラートザイルヴエルク・ザール・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 綱、プラスチック繊維と鋼線撚り線から成る組合わせ綱、及びプラスチック繊維と鋼線から成る組合わせ撚り線
US20150315730A1 (en) * 2014-05-05 2015-11-05 Cortland Line Co. Line for anchoring a hunting decoy
EP3674058A4 (de) * 2017-08-21 2021-05-05 The Yokohama Rubber Co., Ltd. Verfahren und vorrichtung zur herstellung eines gummibeschichteten verdrillten drahtseils
CN108729274A (zh) * 2018-06-26 2018-11-02 桐乡守敬应用技术研究院有限公司 一种高强防腐绳及其制备方法

Also Published As

Publication number Publication date
EP1083254A2 (de) 2001-03-14
EP1083254A3 (de) 2002-11-13
AU768863B2 (en) 2004-01-08
AU5656500A (en) 2001-03-08

Similar Documents

Publication Publication Date Title
US7159381B2 (en) Process and system for producing tire cords
EP0367187B1 (de) Zusammengesetztes Kabel und Verfahren zum Herstellen eines solchen Kabels
JP4956667B2 (ja) フィラメントの合糸方法及びそれにより製造されたフィラメント合糸物
JP5238075B2 (ja) 高テナシティーポリオレフィン繊維のモノフィラメント釣糸の製造方法
RU2702369C1 (ru) Армирующий слой для предметов из эластомерного материала, предпочтительно для пневматических шин транспортного средства, и пневматические шины транспортного средства
US2862281A (en) Treatment of filamentary material
US20020104626A1 (en) Pull cord for coverings for architectural openings and method of making same
MXPA03006191A (es) Metodo para fabricar un elemento de reforzamiento basado en fibra de carbono para neumaticos.
US20030085004A1 (en) Pull cord for coverings for architectural openings and method of making same
US4378042A (en) Foldable bicycle tire having flexible beads
US3382662A (en) Covered elastomeric yarns
JP4772678B2 (ja) タイヤキャッププライとして使用されるテープを生布から作製するための装置および方法
EA005968B1 (ru) Катушка, заполненная несколькими удлиненными элементами, намотанными близко друг к другу
CA2399693C (en) Transmission belts comprising a cord with at least two fused yarns
JPS6042301B2 (ja) 太繊度合成繊維フイラメントの延伸方法
US6066362A (en) Method of processing a filament yarn for a rubber hose
KR20010006427A (ko) 공기 타이어용 직물 코드와, 공기 타이어와, 복합 물질 플라이의 제조 방법
US5475887A (en) Method and apparatus for warping using progressively controlled tension on a dye beam and dye beam geometry therefor
US6660336B1 (en) Method for producing coated reinforcing threads made of high-performance fibers
JPH0754229A (ja) 複合糸条
JP2003129350A (ja) 簾織物、それを用いたタイヤ用のプライ材料の製造方法、及びそのプライ材料を用いたタイヤ
CA3111052C (en) Helically winding apparatus and method in a production line for manufacturing a non-metallic armature
JP2516714B2 (ja) 複合撚合型抗張力体の製造方法
JPS59137582A (ja) 繊維ケ−ブル類の被覆方法
US5179750A (en) Method for warping using progressively controlled tension on a dye beam

Legal Events

Date Code Title Description
AS Assignment

Owner name: HUNTER DOUGLAS INC., NEW JERSEY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WITHERELL, KENNETH W.;IVARSSON, KLAS TURE;REEL/FRAME:012763/0195;SIGNING DATES FROM 20001219 TO 20010115

Owner name: TRUNILS AB, SWEDEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HUNTER DOUGLAS INC.;REEL/FRAME:012763/0253

Effective date: 20011114

AS Assignment

Owner name: TURNILS AB, SWEDEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HUNTER DOUGLAS INC.;REEL/FRAME:013356/0336

Effective date: 20011114

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION