Handbag opening method
Handbag opening method
Cover surface, front panel, back panel, side skins and horizontal heads should be lined up, without cracks, flowers, root scars, scars, pine, ribs, spots, and the color of the lines should be consistent. 2. Process standards for lining materials:
A) Before opening the material, you must carefully check whether the name, specifications, and color of the punched material are consistent with the paper grid knife mold.
B) The material to be cut must be punched according to the required texture.
C) The materials with color difference must be matched with the corresponding punching materials separately. The punched accessories should be opened and marked to avoid unnecessary confusion during production.
D) During the blanking, the material surface should be straight, without wrinkles or rolls, and the number of layers to be opened cannot exceed the specified number of layers to avoid deformation of the knife mold.
E) During the blanking process, always check whether the punched accessories are drawn, loose, and whether the accessories and the knife mold are deformed.
F) Pay attention to the degree of wear of the beer board when punching the parts that need to be changed, so as to avoid the lace and deformation of the parts that are punched out.
3. Marking: Before pressing the mark, you should carefully check whether the accessories and positions to be marked are correct, and the position of the mark should be accurate. The temperature and intensity of the marking should be moderate. The LOGO pattern fonts to be pressed must be complete and clear, and the intensity of the LOGO pattern fonts should be balanced, without pressure, ghosting and other phenomena.
4. Shoveling: The thickness of the leather material varies with the bag type when shoveling. The thickness and width of the shoveling skin are adjusted according to the order process requirements. The thickness of the shoveling skin is the same and the width is uniform. The bottom layer of the leather material must not have ripples or unevenness. Handbags generally have a 3/8-inch diagonal shovel, thin corners, flat shovel 3/8-inch, wallet shovel 5/16-inch diagonal shovel, internal folding shovel 5/16-inch, large face Folding shovel 3/8; the accessories that need an oversized shovel should be based on the softness of the leather to determine the thickness of the oversized shovel. In general, the shoulder strap ears and the handle ears are over 1.4mm, and the bottom support is 0.4mm. In paper and nylon, the large side of the wallet is over 1.5mm, the inside skin is over 0.8mm, the pouch skin is over 1.0mm, and the middle skin is over 0.6mm. There is also a calculation method for the twill bag tape. Mark calculation method can be used. For irregular cuts, in order to achieve the most economical purpose, it requires an effective action-typesetting, also known as mark typesetting, that is, arranging the patterns according to a certain rule in the most cost-effective manner. The maximum / minimum values are obtained by typesetting , Which is the specification (horizontal × straight) in the material calculation, and then calculate the numerator/denominator according to the material width and the assumed length in combination with the following formula. Number of pieces = [width (length)-maximum value] / minimum value × 2+2 length (Width)=(number of pieces-2)/2 × minimum value + maximum value The first formula is used to find how many pieces can be arranged in the direction of knowing the width (length) of the material. The second formula is used Suppose the width (length) of the material is determined after arranging the X pieces. This is copied. I think that the irregular and special requirements of the die can be calculated using the mark method. I hope you can help you to ask: I would like to ask Is there a clearer formula? Answer: There are usually three patterns of straight grain, horizontal grain, and diagonal grain. Everyone knows that straight grain material will not be stretched, horizontal grain material will be stretched, and open twill material is used between these two materials. What I know seems to be only used on the edge band, it can make up for the lack of straight, horizontal stripes. Specifically, a single amount should be calculated, and then calculated with a straight grain knife-3 is the algorithm of twill cutting. Of course, the barge is also used. Generally, if there is no special requirement, the material is opened with straight lines (when the material is wasted, the horizontal lines are opened), and the cotton bag of the handle is generally open with horizontal lines, the purpose is not easy to start Wrinkle, but it should be noted that it is not suitable to open horizontal stripes when making materials that are easy to stretch, and it is best to open diagonal stripes (more wasteful materials, the loss is generally between 8%-10%); when the edge of the package is turned, it is necessary to open diagonal stripes ( Will not wrinkle). In the actual opening, depending on the direction of the material to determine whether to open horizontal or straight lines. If you want to know more about handbags, you can directly follow the website