Raw materials from nature – Products and know-how from us. Sachsenleinen

moulded parts made from linen straw


The technology

The Techno Flax method is based on a patented technology of processing linen straw with a thermoplastic or thermosetting matrix for manufacturing structural components.

The method combines agricultural methods of the linen harvest with industrial processes of manufacturing nonwoven semifinished products to the production of molded parts. Focus of development is on the production of car interior parts.

Linen straw is harvested and defined on the field without using expensive special technique to finish. The stalks, that are pressed into bales, become processed to nonwovens while maintaining the wooden content on standard nonwoven plants.

According to duromeric or thermoplastic processing methods car moldings using Techno flax mats can be manufactured.

Longstanding development of the Techno Flax process has proved the requirements of the practicality in the automotive industry. In case of an industrial implementation, the method hast to become adapted to the demands of each component.


The innovation

The current market situation for fleece capable bast was the impetus for the development of Techno flax technology.

The focus of the development was a process which meets the following requirements:

regional production of natural fibers, thereby ensuring the medium to long-term fiber availability and more stable commodity prices adaptation of fiber raw materials to the current requirements of the automotive supply flexural modulus (3000 6000th.. ...... Mpa) bending strength (40 70 MPa) impact resistance (20 25 KJ / m²)

production and processing is possible on series installations - implementation without additional investment avoidance thermoplastic of the use of special harvesting equipment for agriculture, in particular the conservation of high impact strength on the field at low harvest costs reduction in weather risk with the farmer by greatly reducing the field time spent using known matrix resins such as epoxy-polyurethane resin, polyester resin or thermoplastic melt fibers such as polypropylene fogging values ​​well below the authorized limits reduce costs in the chain up to 30% not stationary treatment required as an intermediate step between harvest and web formation.


The background

Bast fibers such as flax, hemp and kenaf have been proven in the European automotive industry for the production of car interior and are increasingly in demand. The question remains of the medium-term availability and price stability.

Flaxtouw for use in the nonwoven production are the byproduct of textile long fiber production and are produced in Europe in France, Belgium and Belarus. The majority of textile yarn production of flax comes from China and India.

Hemp fibers are substantially free from market influences other processed fiber industries, since the fibers are used directly from the whole plant for technical applications in the nonwovens sector. Here they are partly in direct competition with flax tow. In order to realize the market price for hemp fiber, hemp fiber producers rely on to promote other parts of plants. This coupling use may be economically interesting and should be welcomed bioeconomy. Different accumulating amounts of plant parts or products requested carries the risk from other sectors dependencies.

Kenaf fibers are mainly imported from Bangladesh and India. Market developments in these countries are in the medium to long term difficult to predict. The fact is that the textile use of kenaf and jute, however, determine the market and thus determine the price.

Techno flax provides by the simple cost-harvesting methods, the use of all stem components and the lack of dependence on the marketing of other plant constituents such as linseed economic and strategic benefits. Competitive regional production of fiber straw allows the processing industry, to have a direct influence on the quality and security of supply of the raw material.