PVC & TPU Inflatable Composite Material
Double Wall Fabric for High-Pressure Inflatable Products
DERFLEX supplies custom double wall fabric, also called drop stitch fabric or DWF, for manufacturers building flat, rigid and foldable inflatable products.
From SUP boards and air tracks to inflatable boat floors, floating docks and rescue platforms, the material can be discussed around thickness, base textile, spacer yarn structure, PVC or TPU surface, welding method, pressure target, color and OEM roll supply.
What Is Double Wall Fabric?
Double wall fabric is an inflatable spacer textile made from two parallel fabric layers connected by thousands of internal yarns. After both outer faces are coated or laminated with airtight PVC or TPU, the material can be converted into a pressure-holding inflatable panel.
Unlike tube-style inflatable fabric, the internal drop yarns restrict the top and bottom layers from expanding outward. This helps the finished product remain flat, board-like and dimensionally controlled after inflation while still being compact after deflation.
- Known as double wall fabric, DWF, drop stitch fabric, spacer fabric or dropstitch material.
- Used when a flat inflatable surface is required instead of a rounded air chamber.
- Can be developed with PVC, TPU or project-specific coating and lamination directions.
Top Airtight Surface
PVC or TPU coated/laminated face designed for welding, printing, surface appearance and air retention discussion.
Internal Spacer Yarn System
High-strength yarns connect the two fabric skins and help maintain height, panel shape and pressure stability.
Bottom Structural Surface
The lower coated face works with the top face to form an air-holding panel suitable for downstream cutting and welding.
Sidewall & Seam Package
Finished products require matched sidewall fabric, tape, valve area design and verified welding settings.
Why Product Developers Choose Double Wall Fabric
The right DWF material is selected by finished-product use, target pressure, folding behavior, welding method and service environment—not by GSM alone.
Flat, Firm Surface
The spacer yarn system allows inflatable panels to hold a controlled height and flat surface when properly fabricated and inflated.
Foldable After Deflation
Products can be packed more efficiently than rigid boards or fixed platforms, supporting portable water sports, rescue and outdoor programs.
Custom Thickness Direction
Common heights such as 50 mm, 80 mm, 100 mm, 120 mm, 150 mm, 200 mm and 300 mm can be reviewed according to product design.
PVC or TPU Surface
PVC is often selected for mature manufacturing routes, while TPU can be discussed for lightweight, soft-touch or PVC-free product positioning.
Welding-Oriented Supply
Surface selection can be discussed around hot-air welding, heat sealing or RF/HF welding trials before bulk production.
OEM Development Support
DERFLEX can support custom color, surface finish, roll packing, sample confirmation and repeat-order specification records.
Double Wall Fabric Applications for OEM Inflatable Manufacturing
DERFLEX focuses on roll goods and material development for factories, brands and project buyers that need stable conversion into finished inflatable products.
Inflatable SUP Boards
Flat board body material for paddle boards, surf-style inflatables and touring board programs.
Air Tracks & Gym Mats
Pressure-stable panels for gymnastics, training mats, yoga platforms and sports flooring.
Boat Floors & Air Decks
Rigid-feel inflatable floor panels for dinghies, rafts, kayaks and marine OEM products.
Floating Docks
High-volume panels for portable docks, water platforms, leisure islands and event structures.
Rescue Platforms
Material direction for emergency platforms, rescue mats, access panels and marine safety equipment.
Inflatable Pools & Spa Walls
Panel material for selected water-contact structures where surface finish and welding need evaluation.
Medical Air Systems
Special designs for air-supported cushions, pressure-care products and equipment panels after testing.
Custom Industrial Panels
Inflatable pads, test structures, portable partitions and engineered air-supported components.
Double Wall Fabric Specifications for Discussion
Final data should be confirmed through sampling, seam welding, inflation testing and finished-product evaluation.
| Product Name | Double Wall Fabric / DWF Fabric / Drop Stitch Fabric / PVC or TPU Dropstitch Material |
|---|---|
| Base Structure | Two parallel textile layers connected by internal spacer yarns to form a flat inflatable panel after coating or lamination. |
| Surface Material | PVC coated or laminated surface, TPU film or TPU coating direction, selected according to welding process, air retention, flexibility and product positioning. |
| Base Textile | Polyester or nylon direction can be reviewed according to strength target, weight requirement, folding behavior and end-use application. |
| Common Height | 50 mm, 80 mm, 100 mm, 120 mm, 150 mm, 200 mm, 300 mm or customized development range according to project feasibility. |
| Surface Finish | Matte, smooth, embossed, textured, colored, printable, anti-slip direction or customized visual design depending on MOQ and technical confirmation. |
| Processing Compatibility | Cutting, hot-air welding, heat sealing, RF/HF welding evaluation, lamination, printing, edge taping and finished-product assembly trials. |
| Quality Review | Thickness consistency, yarn alignment, surface appearance, peel strength, welding trial, air-holding test, roll width, packing and batch records. |
| Quotation Information | Send application, target height, drawing or finished size, pressure range, welding method, color, surface finish, roll width, quantity and destination. |
PVC Double Wall Fabric or TPU Double Wall Fabric?
Both material directions can be practical. The better choice depends on product category, market positioning, production process and long-term use conditions.
PVC Double Wall Fabric
Often selected for mature SUP, air track, dock and boat-floor production where buyers need a proven welding route, broad color options and balanced commercial cost.
- Suitable for many mainstream inflatable product lines
- Good surface design and printing discussion space
- Requires confirmation of coating adhesion, folding and weldability
TPU Double Wall Fabric
Often discussed for lightweight inflatable products, premium product positioning, soft folding feel, selected water-contact use or PVC-free development direction.
- Can support lighter and softer product development routes
- Polyether or polyester TPU can be reviewed by application
- Requires sample welding and air-holding verification before bulk order
Built for Sampling, Welding Trials and Repeat Orders
Inflatable product factories usually need more than a catalog item. A workable double wall fabric program should match the customer’s finished product size, pressure target, seam layout, sidewall material, valve area, folding method and packing requirements.
DERFLEX supports buyers with material direction discussion, sample development, specification records, surface customization, roll packing and export communication. This helps OEM teams reduce mismatch between raw material selection and downstream fabrication.
Recommended purchasing route
- Share drawings, target height and application before confirming the material structure.
- Run seam welding and inflation tests before deciding bulk specification.
- Confirm roll width, color, surface texture, packing and batch labels for repeat orders.
How to Choose Double Wall Fabric for Your Product
A practical quotation starts with real product requirements. DERFLEX can help convert these requirements into a sample route.
Define Use
SUP board, air track, boat floor, dock, rescue mat or custom panel.
Set Height
Choose target thickness based on stability, rigidity, buoyancy and packing size.
Select Surface
Compare PVC and TPU directions according to weight, feel, welding and market positioning.
Test Welding
Verify seams, sidewall fabric, valve area and edge construction with your equipment.
Confirm Supply
Lock color, roll width, packing, batch record and repeat-order specification.
Explore Materials Related to Double Wall Fabric
These internal resources help buyers compare inflatable material directions and build a more complete procurement plan.
Develop Your Custom Double Wall Fabric with DERFLEX
Tell us your finished product type, thickness, surface requirement, pressure range and welding method. DERFLEX can prepare a material direction, sample route and quotation for your inflatable product program.
- Target product and drawing or finished size
- Preferred PVC or TPU surface direction
- Height, pressure target and expected load
- Welding method and factory equipment
- Color, texture, printing and roll packing needs
Frequently Asked Questions About Double Wall Fabric
Answers for purchasing teams, OEM factories and product developers before sampling.
Is double wall fabric the same as drop stitch fabric?
In most inflatable material discussions, double wall fabric, DWF and drop stitch fabric refer to the same basic structure: two fabric layers connected by internal spacer yarns and coated or laminated to become airtight.
What is double wall fabric used for?
It is used for inflatable products that need a flat and firm surface after inflation, such as SUP boards, air tracks, inflatable boat floors, floating docks, rescue platforms, gym mats and custom air-supported panels.
Can DERFLEX supply TPU double wall fabric?
Yes. DERFLEX can discuss TPU double wall fabric for lightweight, foldable and PVC-free material directions. The final TPU type, surface and welding process should be confirmed through sample testing.
What thickness can be customized?
Common development directions include 50 mm, 80 mm, 100 mm, 120 mm, 150 mm, 200 mm and 300 mm. Project-specific heights can be discussed according to product design and production feasibility.
Can double wall fabric be welded?
Double wall fabric can be developed for hot-air welding, heat sealing, RF/HF welding evaluation or other downstream fabrication processes. Welding trials are recommended before confirming bulk production.
What information is needed for a quotation?
Please provide product application, target height, finished size or drawing, pressure range, PVC or TPU preference, welding method, surface finish, color, roll width, order quantity and destination.