Custom Sewing Thread — PU Leather with Ultrasonic Welding
We supply sewing thread to garment factories and brands, built in PU Leather with ultrasonic welding for outerwear and jacket programmes. On a trim like this the specification that decides the outcome is lubrication level, because dry thread shreds at high machine speed, so that is agreed in writing before bulk — not discovered when the first carton is opened on the line. Programmes start at 1000 pieces per style per finish.
The failures here are predictable: inconsistent sizing between production runs, or shade variation within one carton. We lock material, finish, dimension and tolerance before bulk, and prepare CPSIA and California Prop 65 compliance so the shipment clears instead of sitting at port while your selling season passes.
Specification
| Product | Sewing Thread |
|---|---|
| Count | Tex 80 |
| Type | bonded nylon |
| Base material | PU Leather |
| Finish / process | Ultrasonic Welding |
| Colour options | 12 Pantone-matched shades |
| Packing | carded |
| MOQ | 1000 pieces per style per finish |
| Sampling | 10 working days, 3 days per revision |
| Bulk lead time | 25-40 days after approval |
| Compliance | CPSIA and California Prop 65 compliance; colour fastness to washing, rubbing and light |
| Ship to | Los Angeles or New York (North America) |
What buyers can customise
- Piece Dyeing — available on PU Leather, quoted per position and per colour.
- Yarn Dyeing — available on PU Leather, quoted per position and per colour.
- Epoxy Dome — available on PU Leather, quoted per position and per colour.
- Pleating — available on PU Leather, quoted per position and per colour.
- Paint Spray — available on PU Leather, quoted per position and per colour.
- Ultrasonic Welding — available on PU Leather, quoted per position and per colour.
- Heat-Cut Edge — available on PU Leather, quoted per position and per colour.
How we produce it
- Drawing or reference sample review, with size and finish confirmed
- Material selection and a finish sample or strike-off
- Prototype made to the agreed count
- Fit and wash test on the actual garment fabric, then a pre-production sample
- Bulk run with ultrasonic welding applied under controlled settings
- In-line inspection, final AQL 2.5 inspection and packing to your ratio
Where it is used
- Denim and workwear — hard-wearing finishes that survive industrial washing
- Outerwear and tailoring — matched to the shell fabric so it drapes with the garment
- Childrenswear and schoolwear — tested to the destination's safety standard
- Bridal and eveningwear — small runs with hand-finished detail
- Uniform and corporate programmes — repeatable spec held on file for reorders
Packing, testing and delivery
Trims are packed to the ratio you specify — by size, by colour or by garment set — with barcodes applied where the line needs them. Test reports for colour fastness to washing, rubbing and light are prepared for the destination market. We ship to Los Angeles or New York with the commercial invoice, packing list and certificate of origin, and hold the approved reference so reorders reproduce the same material, the same finish and the same lubrication level.
FAQ
What is the minimum order?
Programmes start at 1000 pieces per style per finish. Mixed sizes are fine within one style.
Can you match a reference sample?
Yes. Send the trim and we match material, finish and shade, then confirm on a pre-production sample before bulk.
Which compliance documents do you provide?
We prepare colour fastness to washing, rubbing and light and the supporting test reports for the destination market.
What packing options are available?
Bulk packed, carded, or packed to your own size and design ratio with barcodes applied.
Start your sewing thread programme
If you already have a supplier, send us the last problem you had with them. That is usually where we start.
