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Superior sole leather through combination of traditional and modern materials and processes.

Objective


At the 24 months progress meeting, held on the 28th of November in Moergestel, the Netherlands, the achieved results were presented and discussed. The general conclusion is that most of the research activities have been carried out except for parts of the tanning trials (some small scale trails and some large scale trials) and the practical shoe wear tests. On the other hand Driesen carried out more large-scale trials then originally planned.
The achieved results: improved abrasion resistance, water resistance, slip resistance, comfort - are still short of the targeted aims.
The best results have been achieved when the Acronal is introduced in a late stage of the tanning process. According to Mr. Driesen, the absorbed Acronal may completely seal the hide and block the retanning and bleaching process. The final result is sole leather with a good abrasion resistance and fair water resistance. No improvements in the equalisation of performance across best and worst areas of the bend are realised. Slip resistance properties are not yet known.

A major drawback is the appearance; the sole leather has a somewhat darker colour and defects are highlighted. From the shoe manufacturers point of view, an uneven colour is very undesirable; the sole leather would only be usable for a small market segment where the sole are painted afterwards. Other shoe manufacturing aspects like: cutting, gluing, channelling, milling, sand papering, painting of the side of the sole are all okay.

It is expected that it will be possible to alter the tanning process in such a way that good quality sole leather is produced with a uniform colour. It will probably take another 12 months of pilot trials before the right recipe is found as each trial takes about 2 months. See also section 6.1. The tanners Driesen and Cadete both intend to continue the pilot trials with Acronal in their tanneries.The shoe manufacturerers Van Bommel and Igmapa intend to carry out practical wear tests with future batches of sole leather.

Funding Scheme

CRS - Cooperative research contracts

Coordinator

SCHOENFABRIEK WED. J.P. VAN BOMMEL BV
Address
40,Oisterwijkseweg 40
5066 ZG Moergestel
Netherlands

Participants (10)

CAMILO MARTINS FERREIRA & FILHOS, LDA
Portugal
Address
R. Clube Desportivo Cucujaes
3721-908 Vila De Cucujaes
GRUPPO CONCIARIO C.M.C. INTERNATIONAL SPA
Italy
Address
Via Dei Conciatori 52-64
56024 Ponte A Egola
IGMAPA S.L.
Spain
Address
Alicante 32
02640 Almansa
INQUIMICA SA
Spain
Address
Mallorca 417
08013 Barcelona
Instituto Español del Calzado y Conexas
Spain
Address
Poligono Industrial Campo Alto S/n
03600 Elda
JOAQUIM COUTINHO CADETE & FILHOS, LDA
Portugal
Address
Vinha Do Raminho
2384-909 Alcanena
LEDERFABRIEK P. DRIESEN B.V.
Netherlands
Address
Hoge Ham 7-9
5104 JA Dongen
MASURE D'HALLUIN FILS S.A.
Belgium
Address
140,Rue Des Tanneurs 140
7730 Estaimbourg
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO*
Netherlands
Address
6,Bevesierweg, Harssens (Mml)
1780 AM Den Helder
SATRA
United Kingdom
Address
Satra House, Rockingham Road
NN16 9JH Kettering