Welding built for leak‑safe performance
HF/heat‑sealing of films and coated textiles, engineered for consistent strength, clean aesthetics, and repeatable throughput.
What we do
We design, weld, and validate air‑holding and structural seams for inflatable and soft‑goods products. From straight seams and darts to complex baffle patterns and gussets, we pair the right material stack‑up with purpose‑built electrodes and fixtures to deliver strength, aesthetics, and pressure retention—part after part.
Typical applications: air mattresses, inflatable furniture, learning‑to‑swim aids, SUP/kayak chambers and seats, bladders, covers, and multi‑material assemblies with molded parts or textiles.
Capabilities
Capabilities
- Materials: PVC and TPU films, coated/laminated textiles, foams with barrier films, fabric‑wrapped constructions
- Constructions: seams, ribs/baffles, gussets, darts, end‑caps, edge binding interfaces
- Integration: valves (Boston/one‑way/lock‑type), adapters, molded fittings, handles, straps, patches
- Tooling: custom HF electrodes, nests, heat‑seal bars; multi‑up fixtures for takt; quick changeovers
- Throughput: cell‑based lines with visual work aids, poka‑yoke features, and ergonomic jigs for consistency
- Engineering support: seam maps, baffle layout, stack‑up selection, corner radius tuning, stress‑relief design to minimize peel failure.
DFM guidelines we apply
- Choose seam types and widths appropriate to pressure and load paths
- Avoid sharp internal corners; use generous radii to reduce stress concentrations
- Plan gas relief paths and weld order to prevent trapped air and distortion
- Align electrode geometry with real‑world assembly tolerances and fabric drape
- Design for inspection: witness lines, access for gauges, and test ports where helpful
Tooling & fixtures
We build and maintain our own electrodes, nests, and alignment jigs. Each tool is proven with capability runs before release to production. Maintenance schedules and spares reduce downtime and keep weld profile and strength consistent over long runs.
- Electrode and nest design from CAD
- Gauge R&R on critical inspection fixtures
- Documented set‑ups to speed changeovers
Quality & testing
Leak‑safe performance is engineered and verified.
- In‑process controls: seam visual standards, dimensional checks, thermal profile monitoring
- Physical tests: peel/pull strength sampling, burst/pressure testing, cyclic inflation/deflation as needed
- Leak testing: 100% options (e.g., pressure‑decay or water‑bath by product type) with traceable records
- Containment: defect tagging and immediate feedback loops to stop, fix, and prevent recurrence
- Documentation: control plans, inspection records, and test reports can be shared as part of your compliance packet (e.g., CPSIA, REACH, EN‑71, Prop 65 as applicable).
Lead times & engagement
We scope the electrode/fixture set with you, produce samples for sign‑off, and then ramp using a pilot build to confirm yield and takt. Typical timelines vary by seam complexity and volume; we’ll propose a detailed schedule with your RFQ.
What we provide:
- DFM notes and a seam map
- Sample parts for function and appearance
- Golden samples and boundary samples
- A pilot build plan with acceptance criteria
FAQs
PVC and TPU films are standard for air‑holding. Coated textiles and laminates can be designed for strong bonds with the right parameters and adhesives where required.
Yes. We weld or mechanically integrate valves, fittings, and molded housings and can co‑develop the interface geometry.
For many air‑holding products, yes. We define the method (e.g., pressure‑decay) with you based on risk and volume.
Tooled fixtures, controlled parameters, documented set‑ups, and scheduled tool maintenance—plus in‑line checks and periodic capability runs.