EP0456863A1 - Verfahren und Vorrichtung zur Herstellung einer Florbahn - Google Patents

Verfahren und Vorrichtung zur Herstellung einer Florbahn Download PDF

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Publication number
EP0456863A1
EP0456863A1 EP90109344A EP90109344A EP0456863A1 EP 0456863 A1 EP0456863 A1 EP 0456863A1 EP 90109344 A EP90109344 A EP 90109344A EP 90109344 A EP90109344 A EP 90109344A EP 0456863 A1 EP0456863 A1 EP 0456863A1
Authority
EP
European Patent Office
Prior art keywords
web
adhesive
attaching station
tuft
layer
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.)
Withdrawn
Application number
EP90109344A
Other languages
English (en)
French (fr)
Inventor
Thomas Walter Wild
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.)
Bondax Carpets Ltd
Original Assignee
Bondax Carpets Ltd
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 Bondax Carpets Ltd filed Critical Bondax Carpets Ltd
Publication of EP0456863A1 publication Critical patent/EP0456863A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H11/00—Non-woven pile fabrics

Definitions

  • the present invention relates to the manufacture of pile fabrics by implanting successive rows of tuft-forming lengths of yarn in a layer of a thermoplastic adhesive on one face of a pre-formed web.
  • An example of such a method is disclosed in GB 1,422,524A published 28th January 1976.
  • the web is supported at an attaching station on the circumferential surface of a roll and each length of yarn is pushed onto the layer of adhesive through a slot defined between tuft-control elements which are spaced above the roll.
  • the roll After each row of tufts have been implanted in the layer of adhesive, the roll is turned through an angle corresponding to the pitch of successive rows in the pile fabric and the next row is then implanted.
  • the adhesive is required to be in a sticky condition directly beneath the slot. This condition is attained by heating of the layer of adhesive through the web at a position upstream of the attaching station.
  • a heater having a surface over which the web moves, with the layer of adhesive facing away from the heater. After leaving the heater, the layer of adhesive begins to cool. It is therefore important that the heater is near to the attaching station. For this reason, the roll which supports the web at the attaching station is of relatively small diameter.
  • a method of manufacturing a pile fabric wherein a pre-formed web bearing a layer of thermoplastic adhesive on one of its faces is moved through an attaching station, successive rows of tuft-forming lengths of yarn are fed to the attaching station, the adhesive is at the attaching station in an adhesive condition, the lengths of each row are moved together to the layer of adhesive and mid portions of the lengths are implanted in the adhesive to form respective rows of U-shaped tufts, each row extending transversely of the direction of movement of the web through the attaching station and the two limbs of each tuft being aligned in said direction, wherein there is supported on a substantially flat surface at the attaching station a tuft-receiving portion of the web which underlies the tufts of a row being implanted in the layer of adhesive, an immediately adjacent upstream portion extending upstream from said tuft-receiving portion and an immediately adjacent downstream portion extending downstream from said tuft-receiving portion, said support surface extend
  • Supporting both the tuft-receiving portion of the web and an immediately downstream portion of the web on a flat surface improves substantially the uniformity of the attitude of the tufts with respect to the web and thereby improves the appearance of the finished fabric, particularly fabric having short tufts.
  • the invention is applicable with special advantage to the manufacture of a pile fabric wherein the pile consists of rows of U-shaped tufts with the limbs of each tuft aligned with each other in a direction transverse to the length of the row which includes that tuft.
  • the support surface is preferably at a temperature substantially above the ambient temperature, for example a temperature which is approximately equal to the temperature of the web after the web has been heated upstream of the attaching station to transfer heat to the layer of adhesive and so bring the adhesive into an adhesive condition.
  • a temperature substantially above the ambient temperature for example a temperature which is approximately equal to the temperature of the web after the web has been heated upstream of the attaching station to transfer heat to the layer of adhesive and so bring the adhesive into an adhesive condition.
  • the member which presents that surface is supplied with heat other than by the web.
  • apparatus for applying pile-forming tufts to a pre-formed web bearing on one of its faces a layer of a thermoplastics adhesive
  • the apparatus comprising guide means for guiding the web along a path which extends through an attaching station, feed means for feeding successive rows of tuft-forming lengths of yarn to the attaching station, implanting means for implanting in the layer of adhesive at the attaching station a mid portion of each length of yarn in a row and a support for the web at the attaching station, wherein the support has a substantially flat support surface facing towards the implanting means, the implanting means is guided for reciprocation along a path which approaches the support at right angles to said surface, said surface has a margin spaced from the attaching station in the direction of movement of the web, the path defined by the guide means includes a bend at said margin, the support is at the inside of the bend and wherein said margin is spaced not more than 15mm from the position occupied by the centre of a yarn length during implanting of the mid portion of
  • the apparatus illustrated in Figure 1 applies tuft-forming lengths of yarn to a pre-formed web 10.
  • the web is supplied as a roll 11 which is supported in the apparatus of Figure 1 in a known manner for unwinding.
  • the apparatus includes guide means for guiding the web from the roll 11 along a defined path through a marking station 12, a heating station 13, an attaching station 14 and a trimming station 15 to a further roll 16 formed on a take-up reel.
  • the guide means may include rolls and other known guide elements arranged in a generally known manner for guiding the web and will not be described in detail. Representative guide elements are indicated in the drawing at 17.
  • Drive means is provided for moving the web along the path in a controlled manner to the take-up reel and for driving the take-up reel.
  • a known accumulator 18 including one or more rolls which is or are driven when the length of web in the accumulator falls to a predetermined value.
  • a further accumulator 18 a which may be identical with the accumulator 18, is provided upstream of the take-up reel.
  • the take up reel may be driven in such a manner as to maintain tension in the web downstream of the second accumulator.
  • the speed at which the web moves through the attaching station is controlled by a roll 17 a which is driven intermittently and which has a carded surface to avoid slip of the web relative to the roll. Additional means for controlling the speed of the web at selected positions along the path may be incorporated, if required.
  • a pair of marking devices 19 which are operated in co-ordination with feeding of the web 10 along its path to place on respective margins of the web marks which are spaced at predetermined intervals along the margin of the web.
  • the marking devices 19 may be known devices incorporating stamps which print on the web marks, each of which is a rectilinear line of ink, the length of the line being perpendicular to a longitudinal centreline of the web. Movement of the stamps onto the web is triggered by a photodetector which responds to movement of a yarn source or other member at the attaching station which is moved intermittently.
  • the web in the roll 11 has on its upper surface a layer of a thermoplastic adhesive. This layer extends between the margins of the web but preferably does not cover the margins.
  • the marks applied by the devices 19 may be applied only to those margins of the web which do not bear the layer of adhesive. Alternatively, the marks may extend onto the layer of adhesive.
  • the marked web moves from the marking station 12 over the surface of a heating element 20 at the heating station 13.
  • the element 20 has a surface of substantial area which is in contact with the underside of the web 10 and transmits heat through the web to the layer of adhesive to soften the adhesive. This surface is convex in a direction along the web and in a direction across the web.
  • the web, bearing the layer of fluid adhesive, then moves into the attaching station 14.
  • the web 10 is supported on a heating bar 21 which engages the underside of the web and supplies additional heat to the layer of adhesive at a rate which is at least sufficient to compensate for heat losses and maintain the adhesive in a fluid-condition.
  • a slot is defined between guide members 22 and 23 which are spaced upwardly from the web 10 and the layer of adhesive thereon. The slot extends across the entire width of the web and lies directly above the heating bar 21.
  • Grippers 24 are provided for drawing lengths of tuft-forming yarn from a yarn source 25 to respective positions overlying the slot and a presser 26 is arranged for reciprocation towards and away from the web 10 through the slot to press the lengths of yarn through the slot between the members 22 and 23 into the layer of adhesive on the web 10.
  • the implanted tufts are pushed out of the slot by reciprocation of a pusher 27 across the underside of the slot. Movement of the web 10 through the attaching station is stepwise and is co-ordinated with movement of the pusher 27.
  • the general arrangement of the yarn-attaching means may be as disclosed in GB 1,422,524, to which reference should be had for further details.
  • the yarn source 25 may be a known source, for example an assembly of spools connected together in a chain so that yarn can be drawn from successive spools.
  • the tufted web passes through the trimming station 15 to the take-up roll 16.
  • the trimming station there is mounted a pair of cutting blades, one adjacent to each lateral margin of the web.
  • Each cutting blade is positioned to intersect the path of travel of the web and sever from the main body of the web either an entire margin or a part of the margin.
  • the blades are adjustable towards and away from each other according to the required separation between the lines along which the web is to be cut. Alternatively, a single blade may be provided to sever one margin only.
  • the carpet Prior to or after winding of the carpet onto the take-up reel, the carpet may be treated by re-heating as described GB 1,422,524.
  • the heated bar 21 and other members at the attaching station 14 are illustrated in greater detail in Figure 2.
  • the bar 21 is elongated, rectilinear and is arranged with its length extending at right angles to the path along which the web is moved through the attaching station.
  • the bar 21 is hollow and contains one or more electrical heating elements 29. Temperature-responsive devices may be associated with the bar and incorporated in a circuit for controlling energisation of the heating element. Alternative means for supplying heat to the bar 21 may be provided.
  • the bar 21 has a flat surface 30 which faces towards the slot defined between the guide members 22 and 23.
  • the surface 30 extends along the entire length of the bar, which is at least as great as the width of the web 10, and has an extent in the direction of movement of the web through the attaching station which is considerably greater than is the corresponding dimension of the slot.
  • the surface 30 extends both upstream and downstream from the slot.
  • the surface 30 extends downstream from a position directly beneath a longitudinal centreline of the slot defined between the guide bars 22 and 23 for a distance which is within the range three millimetre to ten millimetre and more preferably within the range four milliemtre to eight millimetre.
  • a flat surface which extends downstream from the longitudinal centreline of the slot for a distance of six millimetre gives particularly good results.
  • the bar 21 has a convex surface which extends from the upstream margin of the surface 30 and which curves away from the slot defined by the guide members 22 and 23.
  • the web approaching the attaching station rests on this convex surface and passes around a bend as the web moves moves moves from the convex surface onto the flat surface 30.
  • the upper surface of the web is at the outside of the bend.
  • the bar 21 also has a convex surface extending along the path of travel of the web from the downstream margin of the flat support surface 30. This convex surface also curves away from the guide members 22 and 23 defining the slot.
  • the convex surfaces may be part-cylindrical and may have the same radius of curvature and a common axis of curvature.
  • the web 10, bearing the pile tufts extends around a bend at the downstream margin of the flat support surface 30 and the tufts are at the outside of the bend. In the vicinity of this bend, there is ample space for the free end portions of the tufts and these free end portions do not exert any significant pressure on one another, particularly pressure acting in a direction along the path of travel of the web.
  • the free end portions of tufts in the vicinity of the bend are not subjected to pressure acting along the web such as is the case when the web is flat. Accordingly, the resistance to pushing of each newly-implanted row of tufts from the slot defined by the guide members is less than would be the case if the web continued along a rectilinear path from the implanting position for a considerable distance.
  • the guide member 23 has a lip immediately adjacent to the slot through which tufts are moved by the presser 26. This lip lies nearer to the web 10 than do the tips of the tufts, when the tufts are in an upright attitude with respect to the web. Pushing of the tufts from the slot by the pusher 27 necessarily involves bending of the tufts, in order that they can pass beneath the lip of the guide member 23. Once past the lip, the tufts can spring up behind the lip. The lip then prevents free end portions of the tufts from returning towards the slot and so being contacted by a subsequently implanted tuft.
  • the width of the support surface 30, that is the dimension extending along the path of travel of the web 10, is selected according to the pitch of successive rows of tufts, the lengths of the tufts and the thickness of the tufts.
  • the distance from a central plane of the slot defined by the guide members 22 and 23 to the upstream margin of the support surface 30 is not critical. However, it is desirable that the heating element 20 should approach closely to the attaching station and that only a very small area of the web 10 should be over the gap between the heating element 20 and the heated support bar 21.
  • the distance from the central plane of the slot to the downstream margin of the support surface 30 is not greater than five times the pitch at which the rows of tufts are implanted, is not greater than 15mm and is preferably not greater than 12.5mm. It is also preferred that the distance from the central plane of the slot to the downstream margin of the support surface 30 does not exceed five times the spacing of the guide members 22 and 23 from the support surface 30.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
EP90109344A 1988-11-10 1990-05-17 Verfahren und Vorrichtung zur Herstellung einer Florbahn Withdrawn EP0456863A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8826290A GB2225351B (en) 1988-11-10 1988-11-10 Method of and apparatus for manufacturing pile fabrics

Publications (1)

Publication Number Publication Date
EP0456863A1 true EP0456863A1 (de) 1991-11-21

Family

ID=10646621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90109344A Withdrawn EP0456863A1 (de) 1988-11-10 1990-05-17 Verfahren und Vorrichtung zur Herstellung einer Florbahn

Country Status (3)

Country Link
EP (1) EP0456863A1 (de)
GB (1) GB2225351B (de)
WO (1) WO1991018138A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2233675B (en) * 1989-06-16 1992-09-16 Bondax Carpets Ltd Apparatus and method for the manufacture of a pile fabric
US5443881A (en) * 1989-12-27 1995-08-22 Milliken Research Corporation Heat stabilized pile fabric
NZ262707A (en) * 1993-03-04 1997-07-27 Feltex Modular Carpets Pty Ltd Carpet formed by bonding yarns in zig-zag fashion to opposed faces of adhesive layers and then cutting through sandwiched layer, with yarns supplied via uniform tensioning in the yarns
KR20180079414A (ko) * 2015-11-05 2018-07-10 디에스엠 아이피 어셋츠 비.브이. 텍스타일 제품의 제조 방법, 상기 방법의 용도, 및 상기 방법을 적용하기 위한 장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1059941A (fr) * 1952-04-07 1954-03-29 Bigelow Sanford Carpet Co Perfectionnements à la fabrication de tapis de parquets
LU68840A1 (de) * 1973-01-05 1974-01-28
CH571605A5 (en) * 1972-01-21 1976-01-15 Bond Worth Ltd Pile fabric mfr - partic carpets,by the application of pile or nap fibres to an adhesive-coated substrate
US3937643A (en) * 1973-11-27 1976-02-10 Spanel Abram Nathaniel Method and means of tufting

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB435856A (en) * 1934-02-07 1935-10-01 James Graham Lambert Improvement in pile carpets and rugs and method of manufacturing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1059941A (fr) * 1952-04-07 1954-03-29 Bigelow Sanford Carpet Co Perfectionnements à la fabrication de tapis de parquets
CH571605A5 (en) * 1972-01-21 1976-01-15 Bond Worth Ltd Pile fabric mfr - partic carpets,by the application of pile or nap fibres to an adhesive-coated substrate
LU68840A1 (de) * 1973-01-05 1974-01-28
US3937643A (en) * 1973-11-27 1976-02-10 Spanel Abram Nathaniel Method and means of tufting

Also Published As

Publication number Publication date
GB2225351A (en) 1990-05-30
GB2225351B (en) 1992-05-06
GB8826290D0 (en) 1988-12-14
WO1991018138A1 (en) 1991-11-28

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