When we understand a product, we must first understand its basic knowledge, so that we can understand it better, or understand it more thoroughly. These are all related to basic knowledge. The same is true for EVA bags, so bags How much do you know about the basic knowledge of the production process? Let’s let the EVA factory talk about it.
1. License plate: Generally, the needle is started from the bottom of the plate. When tightening, the stitches should be 3-4 times heavier. The line should be 8-9 stitches per inch. The line should be smooth and smooth, with even seams and no skew. Users can observe the stitching around the bag’s trademark to find problems!
2. Bone pulling: The seam should be even, the corners should not be wrinkled, and the four corners should be even. The wrapping material should be close to the core of the bone, and no broken bones should occur.
3. Install the front bag: The front pinhole must be covered, and the needle should be started at the center of the girdle or bottom. The four corners of the bag should be parallel and symmetrical.
4. Winding: The stop must be uniform and even, paying special attention to the direction of the zipper. The chain sticker coming out of the car should be flat and not wavy.
5. Barge: It should be aligned with the car, the zipper cannot burst, and the double lines between the two lines should be even and straight. The effect of the barge will directly affect the quality of the buried bag. If the girth is too long or too short, the buried bag will be crooked or wrinkled. In principle, the buried bag must be tested before removing the hidden line, and it can be produced only if it is suitable.
6. Stitching technique: The stitching lines should be aligned towards the hooked edge and raw edge, parallel to the top and bottom, and cannot be skewed.
7. Double-return hemming: The hemming opening should not have large thin edges, discounts, or punctures, and the corners should be rounded and smooth.
8. Install the capping head: For the needle position car, it must be balanced and not skewed. The line must be straight and the opening must be even.
9. Install side bags: Pay attention to the direction of the slider. When pulling the buried zipper, the slider should be in the front direction. The four corners of the installed bag should be square and parallel up and down.
10. Car strap: Pay special attention to the square card and the center line. Generally, the length of the square card is 1 or 5 inches. The center line must pass through the intersection and cannot be bent. The folds on both sides of the square card must be even and uniform, and the final closing lines must coincide. .
11. Car triangle webbing: Under normal circumstances, if the ribbon is not punched with a square card, put it into the triangle material for half an inch. If you need to punch the ribbon with a square card, put about 1 inch of the triangle material.
Post time: Aug-19-2024