RU2250277C2 - Method for imparting mechanical action to semi-finished product during thermal processing - Google Patents

Abstract

FIELD: sewing industry, in particular, processes for wet-thermal processing of sewing articles.

SUBSTANCE: method involves converting fabric filaments and threads to high-elastic state on working device and exposing to loading in vertical plane for time providing for reducing of gaps between filaments of low-porosity fabrics by 10-22% at specific mechanical pressures of 0.03-0.12 MPa, with type of loading being graphically presented as second-order convex curved line; exposing semi-finished product to static loading within the same specific pressure range until warp and weft threads are deformed at points of their tangential planes by no more than 50%, with type of loading being graphically presented as straight horizontal line; unloading said semi-finished product for predetermined time so that residual deformation is 7-14%, with type of unloading being graphically presented as second-order concave curved line.

EFFECT: increased efficiency, improved quality of sewing articles due to elimination of excessive compression of semi-finished product fabric filaments and avoiding of additional steaming operation.

Description

The invention relates to the clothing industry, can be used in wet-heat treatment (WTO) of garments.

The known method [1] of mechanical action on the sleeve for outerwear in the WTO process, comprising pre-fixing the portion of the upper part of the sleeve to the front roll line and after steaming, the lower part of the sleeve is subjected to mechanical action. In addition, the mechanical action of various sections is produced at angles from 30 ° to 60 ° and 90 ° to the warp threads.

This method does not provide the required quality and performance, because mechanical action in various areas is carried out sequentially in several stages in the horizontal and vertical planes. At the same time, fixing the portion of the upper part of the sleeve causes stretching of the fibers of the fabric threads along the front roll line, which affects the quality of processing.

The closest in technical essence to the proposed invention is a method [2] the thermal effect on the semifinished product of low porosity fabric during the pressing process, comprising mechanical loading within _^1/4 the duration of steaming with the beginning through the _^3/4 transfer fabric fibers to the rubbery state. Then, simultaneously with the cessation of steaming, the semi-finished product is kept under load, acting on it with the heated working surface of the upper cushion.

This method does not fully provide the required quality and performance, because the semi-finished product is subjected to transient, rectilinear static loading (practically impact), which causes a significant deformation of the warp and weft threads at points of their tangent planes of more than 50%.

When this process is performed, significant lasogenesis is observed, which leads to the introduction of an additional steaming operation to tousle the front part of the tissue pile.

The problem to which the invention is directed, is to increase processing productivity and improve the quality of garments.

This is achieved by the fact that in the known method of mechanical action on a semifinished product during wet-heat treatment, in contrast to the prototype, a semifinished product is subjected to time loading along a convex second-order curve in a vertical plane to reduce the interfiber spaces of low-porous fabrics - 10 ... 22%, at specific mechanical pressures - 0.03 ... 0.12 MPa, then rectilinear static loading, in the same range of specific pressures and the plane, until deformation of warp and weft threads at the points of their tangent square oskost no more than 50%, after which the semi-finished product is unloaded in time along a concave second-order curve with a residual deformation of low-porous tissues of 7 ... 14%.

The proposed method is implemented as follows. The processed semi-finished product, located on the working body after transferring the tissue fibers to a highly elastic state, is subjected to loading in a vertical plane for a time that reduces the interfiber spaces of low-porous tissues - 10 ... 22%, at specific pressures 0.03 ... 0.12 MPa, while the nature of loading in the graphical representation corresponds to a convex curve of a second-order line. Then the semi-finished product is subjected to static loading in the same range of specific pressures until the warp and weft strands are reached at the points of their tangent planes of not more than 50%, while the nature of loading in a graphical representation corresponds to a straight horizontal line. After that, the semi-finished product is unloaded for a predetermined time with a residual deformation of low-porous fabrics of 7 ... 14%, while the nature of the unloading in the graphical representation corresponds to a concave curve of the second-order line.

This method avoids excessive compression of the fibers of the semi-finished fabric, to eliminate the additional operation of steaming and thereby improve the quality of clothing and increase productivity.

Sources of information

1. A.S. USSR No. 1700962, MKI D 06 F 71/00, 1988.

2. RF patent No. 2193082, MKI D 06 F 71/00, 2002.

Claims (1)

The method of mechanical action on a semi-finished product from low-porous fabrics in the process of wet-heat treatment, in which the semi-finished product is subjected to time loading by a convex second-order curve in the vertical plane to reduce the interfiber spaces of low-porous fabrics 10-22%, at specific mechanical pressures of 0.03-0 , 12 MPa, then to rectilinear static loading in the same range of specific pressures and plane until deformation of warp and weft threads at the points of their tangent planes is not more than 50%, after which the semi-finished product is unloaded in time along a concave second-order curve with a residual deformation of low-porous tissues of 7-14%.