What are the requirements for flexible technology in the production process of ton bags?
To control the quality of products and the qualified rate of leaving the factory, requirements, and implementation standards will be made for each procedure in the production process of ton bags. What are the requirements for flexible technology in the production process of ton bags?
Soft bags used for export commodity transportation packaging must undergo jacking tests, dumping tests, vertical impact drop tests, upright tests, tear extension tests, etc. Handle-type soft bags only undergo vertical impact drop tests, dumping tests, and base fabric tests.
1. Jacking test: 6 times load pressure maintenance for 5 minutes.
2. Vertical impact drop test: free fall from a height of 0.8m.
3. Dumping test: pull down the shelf at a height of 0.8 meters, lift one end of the movable plate, and drop the sample bag on the ground.
4. Standing test: lift the single or double straps (if there are four straps) off the ground to keep the bag away from the ground. When conducting the above tests, the bag body and slings must not be damaged, and the contents must not leak.
5. Tear extension test: Draw a 100mm length on the bag, hang it off the ground at a 45-degree angle to the vertical line, apply twice the load, and keep it for 5 minutes. The incision extension length should not exceed 25% of the original incision length.
6. Appearance:
① The warp and weft of the base fabric are not allowed to have two holes in the same place, and there are no less than two loose heads within 100mm2, and no obvious misweaving.
② The base fabric coating is not allowed to have composite quality problems such as cracks, film missing, delamination, bubbles, and lumps.
③ The sewing should be straight, without loose threads, broken threads, floating threads, droppers, and over-seam, and there should be no less than 3 stitches at the needle drop.
④ The slings are required to be of equal length, with a maximum deviation of 40mm.
⑤ The printed patterns, texts, and marks are correct and clear, and the positions are accurate.,