Mimi leather factory-produce for you

1. Sewing [Joyful]

· Needle selection: The needle should not be too fine (which can cause the needle to break) nor too thick (which can create large needle holes leading to tearing). It is recommended to choose a round-tip needle based on the thickness of the leather. Round-tip needles cut through the fibers rather than tearing the coating, reducing the risk of tearing at the stitching points.🙂
· Stitch Tension: The tension of the bottom thread must be balanced. Excessively tight stitches will create “pulling” wrinkles on the PU leather that cannot be restored.🙂
· Melt Prevention: During high-speed sewing, the needle generates heat. If the temperature exceeds the melting point of the PU leather (depending on the formulation), it will cause the edges of the needle holes to melt, resulting in irreversible tearing around the holes. If necessary, use an air-cooled needle or reduce the sewing speed.
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