Objective
A new method for the dyeing and drying of leather is proposed in this project. The system includes a steam purge dyeing module and a dielectric drying radiofrequency chamber both of which are innovative. Improvement of the product quality.
Final report submitted June 1992. The steampurge method is very promising with regard to the dyeing, and above all the through-dyeing of leather. Tests with various dyes and different leathers have shown that the steampurge method saves a considerable amount of time, but also poses a number of problems. Using the steampurge method, leathers wich resist conventional through-dyeing in drums can be perfectly dyed down to the grain within 2-3 seconds.
The greatest problem is encountered during the conveyance of the leather in the mulling chamber as well as in the dye box. The roller conveyors now operate perfectly but not the belts conveying into the mulling chamber and out of the dye box. The edges of the 0,25 mm thick teflonized glass fibre belts are for the guidance not stiff enough normal pu-coated fabric tabes have no temperature resistance. Now, 0,1 mm thick tapes of high grade steels are tested for the conveyance into the mulling chamber and out of the dye box a one piece conveyor belt which extends over the whole width is installed. For this one a belt control must be designed and produced because of the short length in proportion to the width.
The volume of the dye box was optimized to approx. 60 l. As premininary tests have shown, a hold-up time in the dye of 1,5 sec. at a through-feed speed of 7,5 m/min. is enough for a through-dyeing without alcohol or penetration means.
In order to avoid wrinkles when passing the sammying press, a suitable mechanism for spreading out must be designed and produced.
The project will design, build and test in an industrial environment, equipment to enable the successful dyeing, dye fixation and drying of crust leather. Furthermore, it will demonstrate on full-scale equipment, that the benefits obtained with laboratory scale machines can be equally successful in reducing energy costs and providing additional benefits in areas of chemical efficiency, pollution, production times and improved product quality.
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
6250 LIMBURG
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.