Seam-Tape Sealing

Seam-tape sealed waterproof apparel for brands and production teams.

Styleworks supports corporate production teams and designers in planning seam-tape sealed waterproof garments. We review fabric, tape specifications, sewing construction, colorways, planned quantity, factory capacity, and delivery timing together. CASE 03 records a project produced from 200 pieces; this is a case-specific result, not a standard minimum order.

Discuss your waterproof project

English inquiries: replies within 2 business days (Mon–Fri, JST).

Who this page is for

Turned away over lot size

Other OEM vendors declined your small-lot or specialty-spec waterproof project.

Planning a first production run

You are planning an initial bulk production run and need to review quantity, specifications, budget, and timing together.

Starting from materials

You want to discuss fabric structure and tape spec together, from the planning stage.

Water-repellent vs. waterproof vs. seam-taped

Water-repellent — sheds at the surface

A finish that makes the fabric surface shed water and resist soaking. It does not stop water entering through needle holes at the seams.

Waterproof — blocked by construction

A membrane or coating stops water passing through the fabric itself. Performance is measured by hydrostatic pressure testing.

Seam tape — seals the needle holes

Waterproof tape is bonded over stitched seams with heat and pressure, closing the needle holes and completing the garment's waterproof integrity.

How seam-tape sealing works

Sew the garment
Stitching leaves needle holes along the seams
Seam tape is placed over the stitch lines
Tape is bonded with heat and pressure
Waterproof integrity is secured

Performance targets by use case

	Town use	Light outdoor	Serious outdoor	Sports
Hydrostatic head	3,000–10,000 mm	10,000–15,000 mm	20,000 mm+	10,000 mm+
Breathability	Standard	Medium	High	High
Typical use	City wear / commuting	Hiking / camping	Mountaineering / snow / long exposure	Running / cycling

Planning-stage reference values. Final specs are designed around fabric, construction, and retail price point.

Production quantities and project conditions

There is no fixed company-wide minimum order. We review quantity together with materials, processing, sewing construction, factory capacity, budget, and delivery timing. Figures for CASE 03 and CASE 10 describe those projects only. An estimate or 'quantity under review' is acceptable.

Category	Published case / quantity review	Main variables
T-shirts / cut-and-sewn	Reviewed per project	Fabric inventory, number of colorways
Seam-tape sealed garments	From 200 pcs in CASE 03	Fabric, tape spec, sewing construction
Synthetic jackets / pants	Reviewed per project	Sub-materials, sewing line capacity
All-over print	From 120 pcs in CASE 10	Print method, processing facility, fabric width
Down / specialty construction	Case-by-case	Sub-materials, factory line booking

Typical lead time from first consultation to delivery is 13–21 weeks.

Frequently asked questions

What is the minimum lot?

There is no fixed company-wide minimum order. CASE 03 records a project produced from 200 pieces; that quantity is specific to the case. We review fabric, tape specifications, sewing construction, colorways, factory capacity, and delivery timing together with your planned quantity. An estimate or 'quantity under review' is acceptable.

What is the difference between water-repellent and waterproof?

Water repellency is a surface finish — it cannot stop water entering through seam needle holes. Waterproofing blocks water at the fabric construction level, and waterproof garments need seam-tape sealing to finish the job.

Can we discuss materials before specifications are finalized?

For business product development and bulk production, we can review materials and tape specifications together from the planning stage. Share the intended use, planned quantity, budget, and delivery timing. An estimate or 'quantity under review' is acceptable. Any paid work is quoted before it begins.

Discuss your waterproof apparel production plan

We focus on product development and bulk production for businesses. Sole proprietors with a bulk production plan may also inquire, subject to project conditions. Please share the intended use, planned quantity, budget, and delivery timing. An estimate or 'quantity under review' is acceptable. Paid work is quoted before it begins. Sample-only requests without a bulk production plan are not accepted.