(19)
(11) EP 1 473 396 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
09.02.2005 Bulletin 2005/06

(43) Date of publication A2:
03.11.2004 Bulletin 2004/45

(21) Application number: 04425285.6

(22) Date of filing: 23.04.2004
(51) International Patent Classification (IPC)7D04H 13/00
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL HR LT LV MK

(30) Priority: 30.04.2003 IT FI20030122

(71) Applicant: Diddi, Gabriele
59100 Prato (IT)

(72) Inventor:
  • Diddi, Gabriele
    59100 Prato (IT)

(74) Representative: Bardini, Marco Luigi et al
c/o Società Italiana Brevetti S.p.A. Corso dei Tintori, 25
50122 Firenze
50122 Firenze (IT)

   


(54) Composite synthetic fibre material for footwear insoles and production process therefor


(57) A method for the manufacture of a composite synthetic fibre material in the form of sheets or strip intended for the use in the footwear field, especially for the production of footwear insoles. The method comprises the steps of: homogenization of the fibres; carding of the fibres to obtain a fibre structure arranged in several layers; multi-phase needle punching of the layered fibre structure to obtain a felt; characterized in that said felt is subjected to a controlled surface heat treatment suitable for causing the fluff present thereon to melt, and to form partially molten clots without affecting the whole mass of said felt. The felt treated in this manner is then subjected to a finishing treatment in a bath containing an aqueous suspension of a synthetic rubber, the resulting product being subjected to drying in an hot air furnace.





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