SU1608267A1 - Method of producing nonwoven material - Google Patents

Abstract

The invention relates to the textile industry, in particular to the manufacture of nonwoven materials using their waste. The invention improves the quality of nonwovens by using 100% of waste from the production of glued bulk materials containing up to 15% by weight of polymeric binder distributed by spraying. ^-2, loosening the pulp while emulsifying aqueous 6-8% solution of an antistatic preparation and carding machines for carding x while maintaining a relative humidity of 75-80%.

Description

The invention relates to the textile industry, in particular to the manufacture of nonwoven fibrous materials using their production waste.

The aim of the invention is to improve the quality of nonwoven materials.

Fibrous canvas is formed from 100% waste production of glued bulk materials from polyester fibers containing up to 15% by weight of polymeric binder distributed by spraying, and the waste is pretreated by means of sequential deflection with splitting means provided with caulks with a density of mostly 4 cm. loosening of the fibrous mass with simultaneous emulsification with an aqueous 6-8% solution of antistatic preparation and carding on carding machines while maintaining relative air humidity within 75-80%.

Example. Waste glued bulk materials from polyester fibers containing up to 15 wt.% Binder; front ends are 10–15 cm wide, formed when cutting the finished web after drying, as well as interleaf. coals cutouts and refill tips. Waste without pre-cutting is fed to a pinching device consisting of a supply pair located in a vertical plane and a drum with a higher density of a set of pegs - 4 per cm, a prickle height of 12 mm and a prickle diameter at the base of 2.5 mm. Split into separate fiber waste is sucked off by a condenser. The average fiber length is maintained between 53-61 mm.

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Pre-scraped waste is further loosened on a Schch-140Sh pinch-sizing machine with simultaneous emu / sirovaniyu with an aqueous 6-8% solution of an antistatic preparation, for example OS-20.

Then, the regenerated fibers prepared in this way are subjected to combing on a wool-type combing machine H-11-200-III while maintaining the relative air humidity within 75-80%.

The residual binder content on regenerated polyester fibers is in the range of 13-14%. This indicates that, during the preliminary preparation of the fiber mixture, the waste is chipped into separate fibers with the binder being almost completely preserved.

The formation of the canvas is carried out on a converter of the W-III AIN-180M aggregate. The formed canvas can be mechanically fastened, in particular, on a needle punching machine or by impregnation with a polymeric binder.

Depending on the purpose, nonwoven fabric of various surface density and strength is obtained.

The proposed method, with 100% use of waste glued material, provides almost complete preservation of the primary physicomechanical properties of synthetic fibers, which are the basis of waste, and at the same time increase the quality of nonwoven materials. In addition, due to the presence of binder residues on the regenerated polyester fibers, the elasticity of the fibers increases, which, with the same surface density of the material and the same bonding parameters, is expressed in an increase in its thickness and bulkiness. Due to this, nonwoven materials obtained by the proposed method are not inferior in properties to those of the primary fiber.

According to the method, if there is a polymer binder on the fiber, processing is possible only when emulsifying

fibrous mass antistatic drug of a certain concentration (6-8%) and maintaining a relative humidity of 75-80%. At exorbitant values of these indicators, for example, in the direction of reducing the presence of static electricity on the fiber is large enough, which leads to the electrification of the fibrous mass on the removable ridge

a carding machine, in connection with which the formation of a fibrous batt does not occur. When the values change in the direction of increase, the moisture of the raw material occurs, which leads to the accumulation of fiber on

organs of the equipment and also excludes the formation of a formed fibrous batt.

Thus, with antistatic drug concentrations and relative

air humidity beyond the proposed limits, the material manufacturing process becomes practically impracticable. Only compliance with all parameters of the operations of the method allows

get a non-woven material of improved quality.

Claims (1)

Invention Formula A method of making a nonwoven material, in which the waste of adhesive nonwoven material is pretreated, forms a fibrous web and binds it, characterized in that, in order to improve the quality of the material, waste from the production of glued bulk materials from polyester fibers containing at least 15 is used as waste of glued nonwoven material % of the polymer binder distributed by spraying, while pre-treating the waste, they are disintegrated using a pinching agent with a density of caulk mostly 4 cm, then loosening while emulsifying with an aqueous 6-8% solution of antistatic preparation followed by carding at a relative humidity of 75-80%.