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Double Flap Keder

Double Flap PVC Keder for Two-Sided Fabric Attachment

A full-bond PVC keder configuration with two coated-fabric flaps for panel constructions that need two attachment surfaces, balanced reinforcement or project-specific assembly.

Overview

Double flap keder has a PVC core with two fabric attachment flaps extending from the wrapped profile. Depending on the finished product, the flaps can support welding or sewing into a panel, connection to two fabric layers or a balanced construction around the keder edge.

Kedermaker develops the profile around the customer's rail and fabrication method. Diameter alone is not enough to confirm fit: flap width, weld area, fabric weight, coating, finished thickness and the position of both flaps must also match the assembly.

Key Advantages

Two attachment surfaces - Supports products that need fabric connection or reinforcement on both sides of the keder profile.
Application-specific geometry - Diameter, flap width and flap orientation can be reviewed against the panel drawing.
Full-bond construction options - The coated fabric can be bonded around the PVC core for a consistent wrapped profile.
Compatible with multiple fabrication routes - Suitable configurations can be developed for welding, sewing or combined assembly methods.
Custom fabrics and colours - Coating, fabric style and colour can be selected according to the approved project specification.
OEM roll and packaging formats - Roll length, labels, cartons and pallets can be arranged for production supply.

Specifications

Item	Project options
Product type	Double flap PVC keder
Core material	PVC, grade and hardness subject to approved specification
Wider diameter range	2.8mm-30 mm, subject to construction and project confirmation
Flap configuration	Two coated-fabric attachment flaps
Flap width	Custom to drawing, sample and fabrication process
Fabric	PVC-coated textile selected for the application
Attachment method	Welding, sewing or combined construction after validation
Colour	Standard or custom, subject to material availability
Supply format	Rolls with project-specific length, labels and packaging

Applications

Double flap keder can be used in tent and marquee panels, membrane and tensile structures, awnings, industrial covers, removable wall systems, reinforced edge assemblies and other products requiring attachment on both sides of the keder.
It may also support repair or transition constructions, but Repair Keder should be reviewed when the primary task is replacing a damaged edge on an existing panel.
Custom Profile Development
Provide a dimensioned cross-section showing the core position, rail channel, flap direction and required weld or stitch areas. Kedermaker can review the target diameter, flap widths, coated fabric, colour and roll format.
Where two fabric layers meet at the keder, include the full stack thickness and the required finished orientation. A prototype sample should be assembled and trial-fitted before production approval.

Quality and Compatibility Review

The review should confirm core dimensions, flap symmetry or intentional offset, coated-fabric specification, bonding appearance, roll presentation and fit in the customer's actual rail. Product acceptance criteria and tolerances should be agreed before manufacture.

What to Send for a Quote

rail drawing or rail section;
required core diameter;
both flap widths and orientations;
fabric and coating specification;
welding or sewing method;
finished panel drawing;
colour, roll length and quantity;
delivery country and packaging requirements.

FAQ

Why choose double flap keder?
Choose double flap keder when the product needs two attachment surfaces, fabric connection on both sides or a reinforced construction that cannot be achieved with a single flap.
Are both flaps always the same width?
No. Equal or different flap widths can be reviewed. The correct geometry depends on the panel design and fabrication method.
Can double flap keder be welded?
Many PVC-coated fabric configurations are developed for welding, but the fabric, coating, equipment and process settings must be validated for the project.
Can it also be sewn?
Suitable configurations can be sewn, welded or combined with both methods. Send the proposed seam construction so the flap and material can be reviewed.
What diameter should I order?
The nominal diameter must match the rail, but finished fit also depends on fabric thickness and profile construction. Send the rail and an existing sample where possible.
Can you supply custom colours and roll lengths?
Yes, subject to material availability, quantity and the approved specification. Include colour and production-line handling requirements in the enquiry.