| (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 |
| (22) |
Date of filing: 23.04.2004 |
|
| (51) |
International Patent Classification (IPC)7: D04H 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.