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Home » Articles » Technology of sewing production

The procedure of admission, reception and measurement of tissue

Sewing factory receives fabric from the trading depots or directly from the textile factories on the basis of concluded contracts and production program. 

Fabric arrives at the sewing factory in soft pack - in containers, semi-rigid in bales and hard - in boxes with accompanying documents. 

Unloading of incoming fabrics and other materials from vehicles and containers with the help of various conveyors: belt, continuous, roller (roller conveyor), conveyor-shelving, as well as electric carts and forklifts.

Shipping tissue to the place of storage, sorting, measuring and the cutting Department is also using various stationary and mobile lifting vehicles. 

Upon unloading, the inspector will carefully examine the fabric in accordance with the documentation passport of each piece and article tissue. To organize accounting of each piece of fabric is assigned a serial number. 

When taking control the quality and quantity of fabric. 

The quality of the fabric is controlled on raspalovachka the machine, guided by the GOST for the grade of the fabric (Fig. 136).

Wool fabric is subjected to both quality control and measurement of the length and width of the piece. For quality control of wide fabrics used on the machine, where there is a special device for razdvigaya folded shib tissue along the entire length of the piece. The cloth is on the screen of the machine. The minimum linear feed speed of the fabric on the machine 18 m/min, maximum - 25 m/min the fabric on the machine during the sorting with fluorescent lights.

When classifying tissue detect textile defects, stains, tapered seat, raznotsvet of the fabric edges compared to the middle, raznotsvet on the length of the piece, and other defects affecting appearance of the product. 

The locations of the defects of the fabric near the edge to mark paving a colored thread or stick a strip of adhesive plaster. 

The length and width of the cloth measured on promerica the table with a smooth surface (Fig. 137). Cap length of 3 m, width 1.6 m table Cover between the points A and B may be of thick glass bottom and irradiated with a lamp or just to have a smooth surface without illumination.

The machine includes a foot pedal. Shaft speed 200 rpm Throughput table - up to 5000 m per shift (8 hours). Measure the length of each segment between the defects, the width of the fabric every 3 m. For wool fabrics derive the actual width of a piece on the most frequently used width for cotton and silk - at least a width. If the piece is sharply tapered width note the length of the cut with a narrow width. The results of the measurements per-
spisyvayut in the passport of a piece, indicating the name of the textile defect. In the interim statement record the actual measure of the piece and match it as specified by the supplier. 

The measurements of the fabric can also be produced on the machine MP (design CNIISHP). The basis of the measuring of this machine is based on a contactless method of measuring the length of the fabric.

The machine (Fig. 138) consists of the following main components: a conveyor 1 for moving tissue and supply it to the winding device, the counting device 2, the winding mechanism 3, a drive 4. Measuring the length of the piece of fabric 5 produced on the path length of the conveyor, on which is placed a cloth. Leading drum of the conveyor is associated with a counter of the number of revolutions at which to take readings. Conveyor machine made a series of cord belts, grip fabrics, measuring body (Transporter) and promotion of tissue without slipping.

Contactless method of measuring the length of the fabric increases the limit of accuracy of the measured tissue to +-0,06% +-0,5% of a conventional premaratne tables due to reduced stretching of the fabric.

Quality control and length measurement and the fabric width can be produced simultaneously on raspalovachka measuring machine RS-1 (Fig. 139). On this machine when determining quality at the same time automatically measured the length and width of the fabric and measure the data printed on the paper tape. The machine can razbrasivayutsya fabric wound into a roll, folded "book", single and double; there are special devices for unwinding and unfolding fabric, as well as lamp fluorescent light to illuminate the tissue, passing through the viewing Board.

Fabric width is measured photoelectron device, the pulses which are transmitted from the calculating apparatus pechatalsya every 2 RM. m of fabric. Measured the fabric passes between the measuring disc, the circumference of which is 500 mm, and the pressing roller. The disc measure the length of the fabric is kinematically connected with the meter standard, digital. wheels. Measurements of the length and width of the fabric printed on the same paper tape later used as a passport is measured piece.

To return the fabric when you re browsing on the machine provided for reversing the main motor with automatic shaft winding and measuring devices. The machine is designed to move the fabric at a speed from 9.8 to 24.2 m/min At the end of the measured piece of fabric the machine is automatically stopped. 

Precision length measurement is provided in that the fabric passes through the measuring device without tension.

For sorting and measuring of narrow fabrics used in the machine of the other type (Fig. 140). The work on the machine as follows. End of the fabric, if it is composed of "book", filled in as shown in the figure and down to the bottom edge of the screen; push the button include magnetic timer and counter. The width of the fabric is measured with a metal ruler, moving in the groove of the screen. 

The performance of the machine operated by one worker, 5 - 6 thousand m per shift.

Thus, the quality control of fabrics, to determine its grade and produce, if necessary, claims the manufacturer, as well as to identify fabric defects affecting the quality of the cut. At the beginning of the piece of fabric controller indicates the direction of the pile of the chalk line. 

The passport is a piece of fabric to record the length of each segment, width (without edges), textile defects makes it possible to correctly calculate the pieces of fabric for laying out. In addition, proper fixation of the width contributes to a better use of the useful area of fabric.

Reception of imported fabric produced in the same way as the fabrics of domestic production. At the same time the conditions of foreign trade organizations of the extraction, the measurement of the length and quality tested fabric should be performed in the presence of a representative of the State examination. 

Acceptance of fabrics with special impregnation for the manufacture of garments way "farnis" is produced in the following conditions:

the fabric across the entire width needs to be knurled without samenow and ticks on round liners; 

each roll should be Packed in airtight plastic cover completely on all sides.

on the shipping documents and product label should be labeled "fornis" and date of impregnation; 

grading, transportation and storage of such fabrics produced according to the instructions TSNIISHP and CNEIBP.



Category: Technology of sewing production | Added by: 19.10.2017
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