How to open a handbag

The cover, front, back, side skin and horizontal head should have lines, and the skin surface should be free of cracks, burnt flowers, root marks, scars, loose lines, tendons and spots, and the lines should be the same color. 2. Process standard of perforated lining and auxiliary materials: a) Before cutting, carefully check whether the name, specification and color of perforated materials are consistent with the paper grid mold. B) The cutting material must be punched according to the required lines. C) Materials with chromatic aberration must be punched separately, and the punched parts should be marked separately to avoid unnecessary confusion during production. D) When punching, the surface of the material should be straight, without wrinkles or folds, and the number of cutting layers should not exceed the specified number, so as to avoid mold deformation. E) During blanking, always check whether the punched parts are pulled off or loose, and whether the parts and dies are deformed. F) Pay attention to the wear degree of beer board when stamping the parts that need to be replaced, so as to avoid lace and deformation of the stamped parts. 3. Marking: Before marking, carefully check whether the position and position to be marked are correct and the marking position should be accurate. The marking temperature and intensity should be moderate, the pressed LOGO font must be complete and clear, and the depth and intensity of the LOGO font should be balanced, without rolling and ghosting. 4. Shoveling: When shoveling the skin, the thickness of the skin varies with the package type. Adjust the thickness and width of shovel skin according to the process requirements of the order. It is required that the shovel skin has a uniform thickness and width, and the bottom layer of the skin cannot be corrugated and uneven. Handbags are generally 3/8-inch inclined planes with thin corners, 3/8-inch flat-edged shovels, 5/ 16-inch inclined planes for silver bags, 5/ 16-inch edging shovels and 3/8-inch large-edged shovels. The thickness of the oversized shovel depends on the softness and hardness of the leather. Generally speaking, the shoulder strap ear and arm ear 1.4mm or more, the backing 0.4mm with chaff paper, nylon lining, silver bag 1.5mm or more, the endothelium 0.8mm or more, the foreskin 1.0mm or more, and the middle skin 0. You can try the counting method of marking materials. In order to achieve the most economical purpose, we need an effective action typesetting, also known as mark typesetting, that is, to arrange the layout in the most economical way according to certain rules. The maximum/minimum value is obtained by typesetting, which is the specification (horizontal× vertical) in material inventory. Then, according to the width of the material and the assumed length, the numerator/denominator is calculated by combining the following formula. Number of pieces = [width (length)-maximum]/minimum× 2+2 length (width) = (number of pieces -2)/2 × minimum+maximum, where the first formula is used when the width (length) of the material is known. The second formula is used to calculate the width (length) of the material after X-slice arrangement. This is a copy. I think mark method can be used to calculate irregular and special materials. I hope I can help you ask: Is there a clearer formula? A: There are usually three patterns in cutting: straight, horizontal and oblique. As we all know, straight grain materials will not elongate, while horizontal grain materials will elongate. Open twill fabric is a usage between these two fabrics. All I know seems to be only used on packaging tape, which can make up for the lack of vertical and horizontal stripes. Specifically, it is also necessary to calculate the single dosage, and then use the straight row knife to calculate-3 is the twill cutting algorithm. Of course, lapels should also be used. Generally, in the absence of special requirements, the cutting is straight (horizontal stripes in the case of wasting materials), and the cotton core of the handbag is generally horizontal stripes, so it is not easy to wrinkle. However, it should be noted that the handbag is not suitable for materials with horizontal stripes, and it is best to open diagonal stripes (it is a waste of materials and the loss is generally between 8%- 10%); Denim (wrinkle-free) should be opened when flanging. In actual cutting, it is necessary to determine whether to open horizontal stripes or straight stripes according to the direction of the material. Birds' words: Thank you, my friend!