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WO1998035574A1 - Materiau de revetement pour chaussures - Google Patents

Materiau de revetement pour chaussures Download PDF

Info

Publication number
WO1998035574A1
WO1998035574A1 PCT/GB1998/000386 GB9800386W WO9835574A1 WO 1998035574 A1 WO1998035574 A1 WO 1998035574A1 GB 9800386 W GB9800386 W GB 9800386W WO 9835574 A1 WO9835574 A1 WO 9835574A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibre
fibres
bulk
binder
lining material
Prior art date
Application number
PCT/GB1998/000386
Other languages
English (en)
Inventor
Susan Gwynneth Johnson
Original Assignee
Texon Uk Limited
Texon Materiales, S.L.
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 Texon Uk Limited, Texon Materiales, S.L. filed Critical Texon Uk Limited
Priority to AU59984/98A priority Critical patent/AU5998498A/en
Priority to EP98903159A priority patent/EP0966214A1/fr
Publication of WO1998035574A1 publication Critical patent/WO1998035574A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/07—Linings therefor

Definitions

  • the present invention relates to a footwear lining material.
  • heel grip materials have been produced from non-wovens consisting of a matrix of fibres entangled by needle punching, water jets, spin melt or similar consolidation technique.
  • This non-woven felt or fabric is then further bonded with a soft rubber impregnant as a binder.
  • a soft rubber impregnant as a binder.
  • the purpose of this binder impregnant is to strengthen, stiffen and colour the material and so improve its physical properties particularly its abrasion resistance. Finally, it is normal to provide a sueded (buffed) surface to the material to improve aesthetic
  • a lining material for footwear comprising up to 40% by weight binder fibre and the remainder substantially bulk fibre, the binder fibre having a melting temperature which is at least 70°C lower than the melting temperature of the bulk fibre and having a melting temperature of up to 200°C, said material having been heat shrunk by up to 10% in surface area at a consolidation temperature to consolidate the material by fusion incorporation of the binder fibre with the bulk fibre.
  • the binder fibre may be low melting polyester, polypropylene, bi- component polyester or any other heat shrinkable fibre type.
  • the bulk fibre may be polyester or any other suitable fibre.
  • the final weight of the material may be preferably up to 300 g per square metre.
  • the material comprises 30% polypropylene, binder, fibre with polyester, bulk, fibre, the material consolidates at a temperature of 180°C.
  • the bulk fibres have a decitex of 1.7.
  • the binder fibre may be 40% by weight bi-component polyester e.g. Hoechst T254 with a speciality fibre such as Dacron R T702W grooved polyester fibre to improve wicking.
  • the consolidation temperature is 120 °C.
  • At least one surface of the lining material may be sueded to improve wearer feel.
  • a lining material a method of making a lining material comprising the steps of:-
  • the consolidation temperamre may be up to 200 °C in a method in accordance with the invention.
  • the fabric will be exposed to the consolidation temperamre for 10 minutes to ensure complete activation through the thickness of the material.
  • the non-woven fabric or felt may be cooled after heat shrinkage about a cooling roller mangle.
  • the heat shrunk non-woven felt may be split after cooling to provide final layers of lining material.
  • the final lining material layers may be sueded upon at least one surface to improve feel.
  • a lining material is produced only from fibres with no separate binder compound added to consolidate and strengthen the material.
  • the material is strengthened and stiffened to achieve the necessary resilience for a heel grip by incorporation of binder fibres.
  • binder fibres are incorporated with bulk fibres generally of a lower decitex to provide the lining material.
  • the binder fibres have a lower melting point than the bulk fibres.
  • the bulk fibres have a low decitex in order to provide the necessary soft touch for the lining material. However, it is really important that they remain substantially unaffected by activation of the binder fibres. Thus, it has been found that there must be a temperature differential of at least 70 °C between the melting point of the binder fibres and the bulk fibres.
  • the bulk fibres constitute at least 60 % by weight of the lining material and provide the structural matrix for the lining material whilst the binder fibres upon activation become at least flaccid by application of heat or other means. However, the binder fibres do not completely melt upon activation, the objective being to create fusion incorporation of the bulk fibres with the binder fibres.
  • the bulk fibres generally become embedded within the binder fibres upon activation and as the binder fibres become heat shrunk by application of the activation heat these embedded fibres are drawn together to consolidate the lining material as required.
  • the binder fibres thus achieve the necessary fusion bonding within the lining material to give it resilient abrasion strength and also achieve consolidation by shrink displacement of the bulk fibre within the non-woven structure, the surface area of the material being reduced, so that the density measured as gsm is increased.
  • binder fibres and the bulk fibres are initially combined using known felting techniques.
  • these binder and bulk fibres are incorporated together to create a non-woven felt or fabric using needle fibre entanglement techniques or hydro-entanglement.
  • This non- woven felt is presented to heat activation apparatus in order that the binder fibres become soft or similarly activated in order to incorporate or become associated with bulk fibres.
  • the binder fibre could have a surface adhesive coating which is heat activated to which the bulk fibres become tacitly adhered.
  • a second phase in the activation of the binder fibres is heat shrinkage.
  • the incorporated or associated bulk fibres are similarly drawn with the binder fibres during the heat shrinkage stage.
  • the heat shrinkage stage may occur while the fibre is hot or during a cooling stage after heat activation, the type of heat shrinkage is dependant upon the fibre used as the binder fibre in the lining material.
  • the lining material After heat activation and resultant cooling whether forced or environmental, the lining material is substantially in a finished state (apart from splitting and/or sueding).
  • the lining material can be dyed or treated in order to improve performance as a lining for footwear.
  • the lining material may have at least one surface sueded to improve wearer feel in use.
  • the bulk fibre may comprise various speciality fibres in addition to simple structural matrix fibres.
  • grooved fibres could be incorporated in order to enhance wicking within the lining material
  • antibacterial or anti-static fibres could be incorporated to reduce bacterial activity
  • deodorant fibres could be incorporated to improve performance.
  • an alternative method and material for footwear lining is provided which removes the necessity of wet processing for incorporation by impregnation of a binder compound.
  • the dyeing stage will be performed by a wet process but nevertheless the impregnation stage has been eliminated.
  • a binder compound within the lining material it is possible to achieve full utilisation of speciality fibres incorporated into the lining material as these fibres are not covered by the binder compound.
  • the proportions of binder fibre and bulk fibre are highly regulated.
  • the proportions of respective binder fibre and bulk fibre are determined principally by the type of fibre used for each function within the lining material.
  • the binder fibre must have a lower melting temperature than the main constituent bulk fibre and after activation achieve the necessary consolidation and rigidisation of the fabric by shrink activation.
  • the amount of rigidisation i.e. consolidation of the non-woven fabric by heat activation of the binder fibre is by its nature very specific.
  • the degree of consolidation should be just sufficient to allow the finishing operations to be carried out successfully and to achieve certain physical performance targets but there should not be too much consolidation to make the lining material excessively harsh and rigid and so unacceptable for footwear.
  • the level of binder fibre and the temperamre of activation of that binder fibre required to achieve these desirable objectives differs between types of binder fibre.
  • a polypropylene binder fibre and a polyester bulk fibre are appropriately combined using known non-woven felting techniques in a ratio of 30% by weight binder fibre to 70% polyester fibre.
  • the polyester bulk fibre has a 1.7 decitex.
  • the initial carded non-woven batt is consolidated by needle punching to a weight of approximately 600 gsm and a gauge of 2 mm. After appropriate felting the non- woven fabric is presented to heat activation apparatus in order to achieve a shrinkage in surface area in the order of 6% .
  • the consolidation temperamre of the heat activation apparatus is 180°C. However, it will be appreciated that alternative consolidation temperatures could be used. By variation of the consolidation temperamre and the rate at which hot activation gas e.g.
  • a binder fibre of a bi-component polyester type e.g. Hoechst T254 is combined with a grooved polyester fibre e.g. Dacron R T702W.
  • the binder fibre constitutes 40 % by weight of the material whilst the bulk fibre grooved polyester may constitute the remainder of the material but normally would be mixed with cheaper simple polyester fibre.
  • the batt of bi-component polyester binder fibre and grooved polyester bulk fibre are combined by known non-woven felting techniques.
  • An initial batt of carded fibres is needle punch entangled to achieve a non-woven fabric of 600 gsm and a gauge of 2 mm.
  • This non- woven fabric is then presented to hot air (gas) heat activation apparatus in which hot air at a temperamre of approximately 120°C is projected on to the non-woven fabric for a period of ten minutes with the result that the non- woven fabric is heat shrunk consolidated to an approximately 8% surface area loss relative to the original non-woven material.
  • hot air gas
  • the material had a tear strength in the longitudinal axis i.e. direction of fabric making in the order of 24 Newtons whilst in a transverse direction in the order of 16 Newtons.
  • the lining material achieved significant surface wicking.
  • the gauge of the material is in the order of 1 mm; however as indicated above the gauge is achieved possibly by splitting an original consolidated material.
  • the preferred manner of heat activation is using hot air as this ensures that through depth heating is achieved. It will be understood if heated rollers are used there is a severe possibility that surface portions of the non- woven fabric will become glazed i.e. over-activated whilst central portions are less activated with resultant lower consolidation. These factors may diminish lining material appearance and lead to unequal densities of the multiple splits subsequently produced from the material.
  • the critical factor with regard to suitability for a heel grip footwear lining material is the abrasive resistance quotient in comparison with the boardiness of the material. These factors are mostly determined by the proportion of binder fibre inco ⁇ orated within the lining material and the temperamre of consolidation activation temperamre along with the period of exposure. It is important that the bulk fibres remain substantially stable and so it has been found there must be at least a 70 °C temperamre difference between melting temperatures for the bulk fibre and the binder fibre and preferably a higher difference.
  • the binder fibre it is not desirable for the binder fibre to become fluid as it is an objective of the binder fibre to capmre the bulk fibre through surface association and, due to binder fibre shrinkage, to draw the bulk fibre and binder fibre into a further consolidated non- woven fabric mass. It will be appreciated that it is also in accordance with the present invention for the binder fibre to be selectively activated in terms of surface association with the bulk fibre and for shrinkage by alternative activation techniques including solvent application. Obviously, if a solvent is used this solvent should preferably be specific to the binder fibre and have little or no effect upon the bulk fibre type.
  • the binder fibre can be coated with an activatable adhesive to achieve the appropriate association between the binder fibre and bulk fibre to enable the heat shrinkage consolidation effect described above.
  • Types of fibres that can be used for the binder fibre in the lining material include low melting polyester e.g. EMS K170, bi-component polyester fibres such as Hoechst T254 or T252 fibres, or polypropylene or other olefin based bicomponents.
  • the bulk fibre in the lining material can comprise a multitude of fibre types including speciality fibres in order to achieve desired performance within lining material.
  • polyester fibre, Coolmax fibre, Dacron R T702W grooved polyester fibre or anti-bacterial fibre or anti- static fibre or liquid transportation fibre may be included within the bulk fibre component.
  • the bulk fibres will be of a finer or lower decitex compared to the binder fibres as they constitute the bulk of the lining material and thus constitute a significant factor in the wear feel of the lining material. It will be appreciated that finer fibres generally present a softer surface to the wearer.
  • the binder fibres constimting a smaller proportion of the lining material have a less significant effect upon the lining material wear feel and this effect is further diminished by the shrinkage resultant from activation.
  • aesthetic appearance is usually important and so the lining material being visible in footwear on display will normally be dyed with vivid colours to accenmate the appearance of the footwear.
  • the lining material layer may also have various designs printed on it again to enhance footwear appearance on presentation for sale.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Laminated Bodies (AREA)

Abstract

Matériau de revêtement pour chaussures comprenant jusqu'à 40 % en poids de fibre liante, par exemple du polypropylène et le reste constitué de fibre de remplissage, telle que le polyester. La fibre liante présente une température de fusion atteignant 200 °C et inférieur d'au moins 70 °C à celle de la fibre de remplissage. Le matériau subit un retrait thermique lors de sa fabrication de manière à le renforcer au moyen d'une incorporation par fusion de la fibre liante avec la fibre de remplissage, par exposition à l'air chaud.
PCT/GB1998/000386 1997-02-14 1998-02-06 Materiau de revetement pour chaussures WO1998035574A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU59984/98A AU5998498A (en) 1997-02-14 1998-02-06 Footwear lining material
EP98903159A EP0966214A1 (fr) 1997-02-14 1998-02-06 Materiau de revetement pour chaussures

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9703111.6 1997-02-14
GBGB9703111.6A GB9703111D0 (en) 1997-02-14 1997-02-14 Footwear lining material

Publications (1)

Publication Number Publication Date
WO1998035574A1 true WO1998035574A1 (fr) 1998-08-20

Family

ID=10807683

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/000386 WO1998035574A1 (fr) 1997-02-14 1998-02-06 Materiau de revetement pour chaussures

Country Status (4)

Country Link
EP (1) EP0966214A1 (fr)
AU (1) AU5998498A (fr)
GB (1) GB9703111D0 (fr)
WO (1) WO1998035574A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999022060A1 (fr) * 1997-10-23 1999-05-06 Texon Uk Limited Materiau de renforcement pour chaussures
US6790797B1 (en) 1999-04-15 2004-09-14 Invista North America S.A.R.L. Insulating and footwear system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1421694A (en) * 1973-05-15 1976-01-21 Vyzk Ustav Pletarsky Non-woven fabric and the method of producing thesme
GB1425088A (en) * 1972-08-14 1976-02-18 Vyzk Ustav Pletarsky Multilayer stitch-knitted fabric with a supporting elastomeric foam layer and a method of producing same
EP0238422A1 (fr) * 1986-03-21 1987-09-23 Centre Technique Cuir Chaussure Maroquinerie Matériau non-tissé à base de fibres de cuir, son procédé de fabrication et ses applications

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742623A (en) * 1972-05-12 1973-07-03 Servus Rubber Co Boot with heel protection

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1425088A (en) * 1972-08-14 1976-02-18 Vyzk Ustav Pletarsky Multilayer stitch-knitted fabric with a supporting elastomeric foam layer and a method of producing same
GB1421694A (en) * 1973-05-15 1976-01-21 Vyzk Ustav Pletarsky Non-woven fabric and the method of producing thesme
EP0238422A1 (fr) * 1986-03-21 1987-09-23 Centre Technique Cuir Chaussure Maroquinerie Matériau non-tissé à base de fibres de cuir, son procédé de fabrication et ses applications

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999022060A1 (fr) * 1997-10-23 1999-05-06 Texon Uk Limited Materiau de renforcement pour chaussures
US6790797B1 (en) 1999-04-15 2004-09-14 Invista North America S.A.R.L. Insulating and footwear system

Also Published As

Publication number Publication date
EP0966214A1 (fr) 1999-12-29
AU5998498A (en) 1998-09-08
GB9703111D0 (en) 1997-04-02

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