YARN FROM COLLAGEN FIBRE OF ANIMAL SKIN AND METHOD OF ITS MANUFACTURING Russian patent published in 2010 - IPC D02G3/04 

FIELD: textile industry.

SUBSTANCE: yarn from collagen fibre of animal skin contains 1÷100% of collagen fibre by weight, which is made of loosened collagen fibre produced by release of fibre in at least one type of finished skin or hides of at least one type of animals, and 0÷99% of textile fibre by weight. Textile fibre and collagen fibre are twisted together. Collagen fibre is produced from at least one type of animals, including cattle, sheep, horses, dogs, pigs, deer, rabbits, crocodiles and snakes. Textile fibre represents at least one type of natural or synthetic fibres, including cotton, hemp, wool, silk, terylene, acryl fibre, nylon, polyamide and viscose staple. Method for manufacturing of yarn from collagen fibre of animal skin includes selection of tanned leather materials, release of fibres, sorting, mixing, combing, drawing and twisting. Loosener is used to release fibre, and box-like separator with air flow is used for fibre sorting. In version of method realisation the following operations are carried out - selected of non-tanned leather materials, liming, washing with water, de-ashing, tanning and softening, dehydration, release of fibres, sorting, mixing, combing, drawing and twisting. Acid protease is used for de-ashing, and pH value of de-ashing solution is controlled within the limits from 3 to 6. Box-like separator with air flow is used for sorting of fibre. In other version of method realisation raw materials are selected from materials of tanned leather and at least one of synthetic textile fibres or natural textile fibres, release of collagen fibres for production of loosened collagen fibres with single thread, sorting of loosened collagen fibres, mixing of collagen fibres and textile fibres with further combing of mixed fibres for production of continuous fibre, drawing of fibre for improved homogeneity of fibres and twisting of fibres with production of yarn. Box-like separator with air flow is used for sorting of fibre.

EFFECT: produced yarn has high tensile strength, wear resistance, softness, moisture- and oil-absorption and fire-resistance, which makes it possible to use it in weaving, knitting and plaiting, it is possible to produce high-quality cloth from yarn for four seasons with high graph and high strength, which considerably widens sphere of animal skin application and improves extent of its usage.

7 cl, 1 dwg