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EP0070176A2 - Etoffe étirée - Google Patents

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Publication number
EP0070176A2
EP0070176A2 EP82303632A EP82303632A EP0070176A2 EP 0070176 A2 EP0070176 A2 EP 0070176A2 EP 82303632 A EP82303632 A EP 82303632A EP 82303632 A EP82303632 A EP 82303632A EP 0070176 A2 EP0070176 A2 EP 0070176A2
Authority
EP
European Patent Office
Prior art keywords
yarns
fabric
warp
stretchable
weft
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Withdrawn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
EP82303632A
Other languages
German (de)
English (en)
Other versions
EP0070176A3 (fr
Inventor
William Hamish Tough
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.)
Scott and Fyfe Ltd
Original Assignee
Scott and Fyfe 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 Scott and Fyfe Ltd filed Critical Scott and Fyfe Ltd
Publication of EP0070176A2 publication Critical patent/EP0070176A2/fr
Publication of EP0070176A3 publication Critical patent/EP0070176A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/56—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic

Definitions

  • the present invention relates to fabric material and particularly fabric material including longitudinal extending yarns of nylon, polyester, polypropylene, polyethylene or other stretchable plastic fabric materials.
  • Fabric material comprising a warp/weft mesh of polypropylene or other plastics material; this mesh can be made by weaving polypropylene tape or can be made by fibrillating and stitch bonding a longitudinally stretched plastics film by stitching the film e.g. with plastics yarn transversely to the direction of stretch as described in the applicant's U.K. Patent 1437179. It is the principal object of the present invention to provide an improved method of manufacturing such material.
  • a method of treating fabric material having stretchable yarn comprising the steps of stretching the fabric in the longitudinal or/and the transverse directions to stretch said stretchable yarn, and setting the stretchable yarn in the stretched condition.
  • the yarns may be stretched cold or may be heated to their softening point prior to stretching.
  • the stretchable yarn comprises synthetic resinous plastics yarn.
  • the stretchable yarns can be stretched to at least 30% of the original length and preferably to at least twice the original length.
  • the fabric preferably comprises warp and weft yarns and these can be woven together: alternatively the warp yarns may be arranged as stitching to secure the weft yarns.
  • the fabric may include a base sheet such as plastic films or crepe paper.
  • a method of manufacturing a fabric material comprising the steps of forming a woven base fabric of warp and weft yarns, said warp yarns comprising stretchable yarns while said weft yarns include longidutinal zones of weakness, stretching the base fabric to stretch said stretchable warp yarns, said warp stretching serving to split said weft yarns into spaced strips, and setting the stretchable warp yarn in the stretched condition.
  • the present invention is also fabric made by any of the above inventive methods.
  • basic fabric material 1 comprises a woven construction of warp yarns 2 and weft yarns 3, which yarns 2,3 are formed from flat polypropylene tape.
  • the warp is a 111 tex tape produced with a stretch orientation ratio of 6:1 for example, while the weft tape 3 is a 111 tex tape with a stretch orientation ratio of 7 to 1 and which has been produced with localised weakened areas 4 running in the longitudinal directions by means of fibrillation, embossing or other methods.
  • 39 threads per 10 cms can be provided in the warp direction and 39 threads per 10 cms in the weft direction.
  • Fig.l shows the fabric'in the initial unstretched condition.
  • the basic fabric 1 is now tensioned and heated to approximately 160 0 C at which temperature the polypropylene yarns become softened. With the temperature controlled at the desired value of 160 0 C approximately, the fabric 1 is stretched in the warp direction (see arrow X in Fig.2) to twice its original length. It is important to control the fabric temperature within particular limits e.g. + 2 0 C for satisfactory results and the particular temperature selected will depend on the material of the yarn and other factors, such as the type of yarn bond desired.
  • the warp yarn 2 experiences a weight reduction from 111 tex to 56 tex. However, due to the increased orientation of the warp yarn 2, the tenacity of the yarn, as expressed in gms/dtex, will be increased and the extension of the yarn at breaking load will be reduced.
  • the weft yarn 3 will not be stretched longitudinally. However, due to the appropriate temperature applied to the fabric 1 and the tension and stretching which occurs in the process, the warp and weft yarns 2,3 in the fabric will bond together at their intersections 5. The degree of bonding may be adjusted by varying the conditions of temperature, tension and stretch. During the heating and stretching in the warp direction X and because of the bond achieved at the intersections 5 of warp and weft yarns 2,3, the weft tape 3 will be Extended in its crosswise direction.
  • the stretch may be applied to the base fabric in the longitudinal direction, or in both the longitudinal.and transverse directions in varying degrees from 1% upwards.
  • One commercial end use for the fabric described in this embodiment would be as a material for packing purposes, particularly for production of bags and sacks where good cover, strength and stability of the fabric is desirable at a low cost.
  • weft yarn for example in the form of tapes may be used which do not have the longitudinal weakened zones.
  • the basic fabric comprises a stitch bonded fabric having a longitudinal yarn of a flat heat stretchable plastic tape knitted into a chain stitch formation and a transverse weft of spun yarn of a non-thermoplastics material.
  • the heat stretchable thermoplastics material in the warp direction can advantageously be a polypropylene and the non-thermoplastic spun yarn in the weft direction can advantageously be of jute fibre.
  • the material in the chain in the warp direction is a 44 tex tape produced with a stretch orientation ratio of 5:1, while the weft yarn is a 276 tex spun jute yarn.
  • the rows of chain stitch in the warp direction can be provided at 32 rows per 10 cms and the weft yarns can be provided at 78 threads per 10 cms..
  • the basic fabric is now tensioned and heated to approximately 158 C, at which temperature the polypropylene tape in the chain stitch becomes softened. With the temperature controlled the basic fabric is stretched in the warp direction to twice its original length. The tape in the chain stitch experiences weight reduction from 44 tex to 22 tex. However, due to the increased orientation of the warp yarn and the equalisation of tension on the three legs of the chain, the resultant tenacity of the chain, as expressed in gms/dtex, will be considerably increased and the extension at breaking load will be reduced. The weft yarn will be unaffected by the heat applied but instead of being situated in the fabric at 32 threads per 10 cms, it will now be reduced to 16 threads per 10 cms.
  • the stretch may be applied to the base fabric in the longitudinal direction, or in both the longitudinal and transverse directions in varying degrees from 1% upwards.
  • One commercial end use for the fabric described in this embodiment would be as a secondary carpet backing which has the appearance of a traditional jute backing, with very good properties of stability and adhesion necessary for this end use, at a low cost.
  • fabric material comprises a leno woven construction of warp and weft yarns, which yarns are formed from flat polypropylene tape.
  • the ' warp tape is a 44 tex tape produced with a stretch orientation ratio of 6:1 while the weft tape is a 111 tex with a stretch orientation ratio of 7:1.
  • 2 x 24 threads per 10 cms can be provided in the warp direction and 40 threads per 10 cms in the weft direction.
  • the basic fabric is now tensioned and heated to approximately 158°C, at which temperature the polypropylene yarns become softened.
  • the basic fabric is stretched in the warp direction to twice its original length.
  • the warp experiences a weight reduction from 44 to 22 tex.
  • the tenacity of the yarn as expressed in gms/dtex, will be increased and the extension of breaking load will be reduced.
  • the weft yarn will not be stretched longitudinally but instead of being situated in the fabric at 40 threads per 10 cms, it will now be situated at 20 threads per 10 cms.
  • a base fabric containing tapes or yarns of other synthetic or natural materials of differing construction, width, orientation ratio, polymer or fibre base and situated in the base fabric with different settings of tapes or yarns per 10 cm provided the tapes or yarns used can be extended if necessary by the percentage required under the selected conditions of temperature and direction of base fabric • stretch.
  • the stretch may be applied to the base fabric in the longitudinal direction, transverse direction or in both the longitudinal and transverse directions in varying degrees from 1% upwards.
  • One commercial end use for the fabric described in this embodiment would be as a reinforcement for needled products for use as blankets and coir matress pads, where dimensional stability and strength after needling is important, along with low cost.
  • a band of longitudinally oriented polypropylene film 8 is supplied to the weft carrier 9 of a Malimo (RTM) stitch-bonding machine (not shown), which carrier traverses back and forth transversely to the direction of warp feed (arrow F Fig.3), to cross-lay the film strip 8 continuously.
  • the weft carrier 9 is modified so as to preperforate the strip at appropriate intervals, causing it to separate into short lengths about 2.5 millimetres wide, which can be looped about the hooks (not shown) which normally receive the weft.
  • the carrier motion may be such as to impale the strip 8 on the latter hooks, likewise causing short splits and narrow strands which can be looped above the hooks.
  • a continuous length of cross-laid film having upper layer 8a and lower layer 8b is fed by the hooks to the stitching needles of the machine.
  • An appropriate supply of stitching yarn 10 (Fig.4) is provided of nylon, polypropylene or other heat stretchable plastics material and the stitching yarn 10 can be in the form of tape.
  • the stitching yarn 10 should be moderately orientated to enable the stitching process to proceed satisfactorily.
  • the stitch needles are arranged to form Spaced parallel rows of chain stitches, longitudinally of the cross-laid film 8, so securing the cross-laid layers 8a, 8b together.
  • the relative angularity of the cross-laid layers 8a, 8b of the film 8 will depend on the machine settings and it will be clear that this angularity can be varied within certain limits.
  • the stitch needles, on penetrating the cross-laid double-layer film 8 cause short slits 11 on each layer 8a, 8b which extend in the direction of stretch orientation K of the layer and obliquely to the direction of movement of the double-layer film (i.e. to the warp direction), the slits (llb) of one layer extending oppositely to the slits (lla) of the superimposed layer due to the relative angular orientation of the superimposed layers 8a, 8b.
  • the stitching yarns 10 are capable of substantial further orientation and, when the stitched-bonded fabric 12 is taken from the stitch-bonding machine, the fabric 12 is passed over a heating surface (not shown) to heat the yarns 10 to a selected temperature and so as to soften the stitching yarn 10: this can be conveniently done since the stitching yarn 10 stands proud of the weft film 8. Alternatively, the fabric 12 could be completely heated causing.softening of the stitching yarn 10 if the stitching has a lower melting temperature. Simultaneously with the heat softening, the stitching yarn 10 is tensioned longitudinally and stretched. In this way, the length of the fabric 12 can be as much as doubled and there is no correcponding reduction in its width.
  • the weft film 8 employed is of weight of 50 grammes per square metre and when formed into the double layer, results in a weft direction fill weighing 100 grammes per square metre.
  • the material in the chain 10 in the warp direction is a 44 tex polypropylene tape produced with a stretch orientation ratio of 5:1.
  • the rows of chain stitch in the warp direction can be provided at 32 rows per 10 cms.
  • the length of stitch can be 3.5 mms.
  • the basic fabric when -tensioned can be heated to approximately 158 C, at which temperature the polypropylene tape 10 in the chain stitch becomes softened.
  • the basic fabric is stretched in the warp direction to twice its original length, and the tape in the chain stitch 10 experiences weight reduction from 44 tex to 22 tex.
  • the resultant tenacity of the chain as expressed in grammes per dtex, will be considerably increased and the extension at breaking load will be reduced as in the second embodiment.
  • the weft film 8 will be unaffected by the heat applied but instead of being situated in the fabric at a total weight of 100 grammes per square metre, it will not be reduced to 50 grammes per square metre.
  • a base fabric containing a weft direction oriented web, row, or film of other synthetic or natural materials of differing construction, width weight and thickness could be used and that in the warp direction, stitching yarns of other synthetic or natural materials of differing construction, width, orientation ratio, polymer or fibre base and situated in the base fabric with different settings of tapes or yarns per 10 cm provided the warp and weft direction materials can be extended if necessary by the percentage required under the selected conditions of temperature and direction of base fabric stretch. It will also be appreciated that in this embodiment stretch may be applied to the base fabric in the longitudinal direction or in both the longitudinal and transverse directions in varying degrees from 1% upwards.
  • the fabric could be used commercially for the manufacture of open weave sacks and bags for vegetables, where lightness and good stability are required in the product, along with a low cost of production.
  • a basic fabric 16 (Fig.4) comprises a stitch bonded crepe paper 17 crimped transversely with resultant longitudinal stretch, having a longitudinal warp yarn 18 of a partially oriented polyester continuous filament yarn knitted into a chain stitch formation and a transverse weft 19 of continuous filament polyester with standard orientation.
  • the yarn 18 extends transversely to the crimp.
  • the material in the chain in the warp direction is a 30 tex POY polyester yarn, while the weft yarn 19 is a 15 tex continuous filament, conventionally drawn, polyester yarn.
  • the rows of chain stitch in the warp direction can be provided at 20 rows per lO cms and the weft yarns can be provided at 15 threads per 10 cms.
  • the basic fabric 16 is now tensioned and stretched in the warp direction from the unstretched condition in Fig. 5 'to twice its original length without the application of heat i.e. to the condition in Fig.6.
  • the POY yarn 18 experiences a weight reduction from 30 tex to 15 tex.
  • the resultant tenacity of the chain as expressed in grammes per dtex, will be considerably increased and the extension at breaking load will be reduced to normal levels as explained previously.
  • the weft yarn 19 instead of being situated in the fabric at 15 threads per 10 cms, will now be reduced to 7h threads per 10 cms.
  • a base fabric containing extendable base materials other than crepe paper extendable in one or both directions may be utilised.
  • the yarns used may be of other synthetic or natural materials of differing construction, width, orientation ratio, polymer or fibre base and situated in the base fabric with different settings of tapes or yarns per 10 cm provided the tapes or yarns used can be extended if necessary by the percentage required under the selected conditions of temperature and direction of base fabric stretch.
  • stretch may be applied to the base fabric in the longitudinal or longitudinal and transverse directions in varying degrees of stretch from 1% upwards.
  • One commercial end use for the fabric described in this embodiment would be as a material for the production of base fabric for carpet underlay production, where strength and rigidity at lost cost are important.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)
EP82303632A 1981-07-14 1982-07-09 Etoffe étirée Withdrawn EP0070176A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8121705 1981-07-14
GB8121705 1981-07-14

Publications (2)

Publication Number Publication Date
EP0070176A2 true EP0070176A2 (fr) 1983-01-19
EP0070176A3 EP0070176A3 (fr) 1984-07-11

Family

ID=10523234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82303632A Withdrawn EP0070176A3 (fr) 1981-07-14 1982-07-09 Etoffe étirée

Country Status (6)

Country Link
EP (1) EP0070176A3 (fr)
AU (1) AU554812B2 (fr)
DK (1) DK313282A (fr)
FI (1) FI822488L (fr)
IE (1) IE52997B1 (fr)
NZ (1) NZ201252A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114120A3 (en) * 1983-01-18 1984-12-05 Scott & Fyfe Limited Fabric material
EP0114121A3 (en) * 1983-01-18 1984-12-12 Scott & Fyfe Limited Fabric material
EP1342824A1 (fr) * 2002-03-05 2003-09-10 Bonar Technical Fabrics Ecran réflechissant à degré de réflechissement adjustable et climatisation au moyen de cet écran
CN102677269A (zh) * 2012-05-29 2012-09-19 蔡紫林 布
CN102677263A (zh) * 2012-05-29 2012-09-19 蔡紫林 一种织物
CN102677364A (zh) * 2012-05-29 2012-09-19 蔡紫林 布
CN102677271A (zh) * 2012-05-29 2012-09-19 蔡紫林 一种纺织布
CN102677356A (zh) * 2012-05-29 2012-09-19 蔡紫林 一种窗帘布
CN102677323A (zh) * 2012-05-29 2012-09-19 蔡紫林 窗帘布料

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1194361B (de) * 1957-04-17 1965-06-10 Carl Friedrich Verfahren zur Herstellung dehnungsarmer Besatz- und Einfassbaender fuer Schuhe und Handtaschen
NL296911A (fr) * 1962-08-30
DE1244701B (de) * 1964-09-25 1967-07-20 Textiltech Forsch Verfahren zur Ausruestung eines textilen Verbundstoffes
US3769815A (en) * 1970-12-14 1973-11-06 Forsch Textiltechnologe Method of producing textiles on knitting machines
GB1437179A (en) * 1972-04-05 1976-05-26 Fyfe Ltd Scott Nonwoven sheet films

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114120A3 (en) * 1983-01-18 1984-12-05 Scott & Fyfe Limited Fabric material
EP0114121A3 (en) * 1983-01-18 1984-12-12 Scott & Fyfe Limited Fabric material
EP1342824A1 (fr) * 2002-03-05 2003-09-10 Bonar Technical Fabrics Ecran réflechissant à degré de réflechissement adjustable et climatisation au moyen de cet écran
BE1014679A3 (nl) * 2002-03-05 2004-03-02 Bonar Technical Fabrics Nv Scherm met regelbare schermingsgraad en klimaatregeling gebruik makend van zo'n scherm.
CN102677269A (zh) * 2012-05-29 2012-09-19 蔡紫林 布
CN102677263A (zh) * 2012-05-29 2012-09-19 蔡紫林 一种织物
CN102677364A (zh) * 2012-05-29 2012-09-19 蔡紫林 布
CN102677271A (zh) * 2012-05-29 2012-09-19 蔡紫林 一种纺织布
CN102677356A (zh) * 2012-05-29 2012-09-19 蔡紫林 一种窗帘布
CN102677323A (zh) * 2012-05-29 2012-09-19 蔡紫林 窗帘布料

Also Published As

Publication number Publication date
AU554812B2 (en) 1986-09-04
FI822488A0 (fi) 1982-07-13
FI822488A7 (fi) 1983-01-15
EP0070176A3 (fr) 1984-07-11
IE821672L (en) 1983-01-14
NZ201252A (en) 1985-07-12
AU8590582A (en) 1983-01-20
DK313282A (da) 1983-01-15
IE52997B1 (en) 1988-04-27
FI822488L (fi) 1983-01-15

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SCOTT & FYFE LIMITED

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Effective date: 19841213

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Effective date: 19860127

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Inventor name: TOUGH, WILLIAM HAMISH