Garment production process

(I) incoming inspection of raw materials and auxiliary materials

 

 

After the fabric enters the factory, the quantity shall be counted and the inspection of appearance and inner quality shall be carried out. Only when the fabric meets the production requirements can it be put into use. Technical preparation should be carried out before mass production, including the preparation of process sheet, sample and sample making. The sample can only enter the next production process after customer's confirmation. Semi-finished fabrics are cut and sewn, and some woven fabrics are made into semi-finished products. According to special technological requirements, post-finishing processing is required, such as garment washing, garment sanding, wrinkling effect processing, etc. **** passes the auxiliary process of keyhole fastening and ironing, and is packaged and stored after passing the inspection.

 

 

 

Purpose and requirements of fabric inspection

 

 

To control the quality of fabric is an important part of the quality of finished products. Through the inspection and measurement of the incoming fabric, the rate of quality can be effectively improved.

 

 

Fabric inspection includes appearance quality and inner quality. On the appearance, the main inspection of the fabric is whether there is damage, stains, weaving defects, color difference and so on. Sand - washed fabric should also pay attention to whether there are sand - washed defects such as sand - path, dead - fold mark, crack. The defects that affect the appearance should be marked out in the inspection and avoided in the cutting.

 

 

The inner quality of fabric mainly includes shrinkage, color fastness and gram weight (mmi, ounce). During the inspection and sampling, representative samples of different varieties and colors from different manufacturers should be cut and tested to ensure the accuracy of data.

 

 

At the same time, the auxiliary materials into the factory should also be inspected, such as the shrinkage rate of elastic tape, bonding fastness of adhesive lining, smooth degree of zipper and so on. The auxiliary materials that cannot meet the requirements shall not be put into use.

 

 

(3) main contents of technical preparation

 

 

Before mass production, the technical preparation should be done by technicians. Technical preparation includes process sheet, sample making and sample making. Technical preparation is an important means to ensure smooth mass production and final products meet customer requirements.

 

 

Process sheet is a guiding document in garment processing, which puts forward detailed requirements on garment specifications, sewing, ironing, packaging, etc., and clarifies details such as garment accessories collocation and seam density. Each working procedure in garment processing should strictly follow the requirement of craft sheet.

 

 

Sample production requires accurate size, complete specifications. The contour lines of related parts were exactly matched. The sample shall be marked with garment style number, position, specification, grain direction and quality requirements, and the sample shall be stamped with a composite seal at the relevant splicing place.

 

 

After the preparation of process sheet and sample, small batch sample production can be carried out, and the discrepancies can be timely corrected according to the requirements of customers and the process, and the difficulties in the process can be tackled, so as to facilitate the smooth flow of mass production. The sample becomes one of the important inspection basis after the customer confirms and signs.

 

 

(iv) cutting process requirements

 

 

Before cutting, the layout diagram should be drawn according to the sample. "complete, reasonable and economical" is the basic principle of layout. In the cutting process, the main technological requirements are as follows :(1) the amount of spot cleaning and pay attention to avoid defects. (2) for different batches of dyed or sanding fabrics to be cut in batches, to prevent the appearance of color difference on the same garment. For a fabric in the existence of color difference phenomenon to color difference arrangement. (3) pay attention to whether the straight grain of the fabric and the direction of the silk wisps of the garment pieces are in line with the technological requirements when arranging the material, and do not arrange the material backward for the raised fabrics (such as velvet, velvet, corduroy, etc.), otherwise it will affect the depth of the clothing color. (4) for plaid fabrics, attention should be paid to the alignment and positioning of the plaid in each layer when towing materials, so as to ensure the coherence and symmetry of the plaid on clothes. (5) cutting requires accurate cutting, straight and smooth lines. Spread the shape should not be too thick, the upper and lower layers of the fabric do not bias knife. (6) cut the cutting edge according to the matching mark of the template. (7) care shall be taken not to affect the appearance of the garments when using cone hole marks. After cutting, the quantity shall be counted and the film shall be inspected, and the clothes shall be bundled in piles according to the specifications, and the ticket signature shall be attached to indicate the style number, position and specifications, etc..

 

 

 

(5) sewing

 

 

Sewing is the central process of garment processing. The sewing of garments can be divided into machine sewing and manual sewing according to styles and techniques. Streamline the sewing process.

 

 

Adhesive lining is widely used in garment processing, and its function lies in simplifying sewing process, making uniform garment quality, preventing deformation and wrinkling, and playing a certain role in garment modeling. Its kind weaves with nonwoven cloth, shuttle to taste, knitwear is bottom cloth in the majority, the use of aggrandizement line should undertake choosing according to dress fabrics and place, want to master aggrandizement time, temperature and pressure accurately, such ability achieves better result.

 

 

(6) keyhole nail buckle

 

 

The keyholes and fasteners in clothing are usually made by machine. According to their shape, the buttonholes are divided into two types: flat type and eye-type holes, commonly known as sleeping holes and pigeon eye holes.

 

 

Sleeping holes are commonly used in shirts, skirts, pants and other thin clothing products. The pigeon eye hole is mainly used for outer garment of the same thickness fabric of jacket and suit. The keyhole should pay attention to the following points :(1) whether the buttonhole position is correct. (2) whether the size of buttonhole matches the size and thickness of button. (3) whether the buttonhole opening is cut properly. (4) stretch (elastic) or very thin clothing materials, to consider the use of keyhole in the inner layer with cloth reinforcement. Button sewing should be corresponding to the position of the buttonhole, or it will cause distortion and deviation of the garment due to incorrect buttonhole position. Attention should also be paid to whether the amount and strength of the stitching thread are enough to prevent the button from falling off, and whether the number of winding of the stitching thread on the thick fabric clothing is sufficient

 

 

(7) perm

 

 

 

Perm people often use "three points sewing seven points perm" to strong adjustment perm is an important process in clothing processing.

 

 

Avoid the following phenomena :(1) aurora and scorch on the surface of clothing caused by too high ironing temperature for too long. (2) clothing surface leaving small ripples, wrinkles and other ironing defects. (3) there is hot leakage.

 

 

Inspection of garments

 

 

The inspection of garments should run through the whole process of cutting, sewing, keyhole fastening and ironing. Complete inspection of finished products should be carried out before packaging and storage to ensure product quality.

 

 

The main contents of finished product inspection include :(1) whether the style is the same as the confirmed sample. (2) whether the dimensions meet the requirements of the process sheet and sample. (3) whether the stitching is correct, whether the sewing is neat and plain. (4) check whether the check of checked fabrics is correct. (5) whether the silk wisps of the fabric are correct, whether there are defects and oil stains on the fabric. (6) whether there is any color difference in the same garment. (7) perm is good. (8) whether the adhesive lining is firm, whether the phenomenon of glue infiltration. (9) whether the thread head has been cleaned. (10) whether the accessories are complete. (11) whether the size mark, washing mark and trademark on the clothing are consistent with the actual content of the goods and the correct location. (12) whether the overall form of clothing is good. (13) whether the packaging meets the requirements.

 

 

(9) packing and warehousing

 

 

Clothing packaging can be divided into two kinds of hanging packaging and box packaging, box packaging is generally divided into internal packaging and outer packaging.

 

 

Inner packaging refers to a piece or several pieces of clothing into a plastic bag, the type number and size of the clothing should be consistent with the plastic bag, the packaging requirements flat and beautiful. Some special styles of clothing in the packaging to carry out special treatment, such as wrinkle clothing in the form of wrap-up, in order to maintain its style.