DLT-5311
Tunnel Membrane Fabric
A PVC-faced polyester membrane for fabricating tunnel lining panels.
- Weight
- 850g(±10g)/sqm
- Width
- 1.02m-5.0m
Product images
TECHNICAL DATASHEET
| Structure: | PVC film+Polyester base fabric+PVC film |
|---|---|
| Base fabric: | 1000D |
| Width: | 1.02m-5.0m |
| Weight: | 850g(±10g)/sqm |
| Thickness: | 0.7mm |
| Colour: | Black/Yellow/RAL1018 or customized |
| Flame retardant: | Self-extinguish |
| Tensile strength: | 4400/4060(N/5cm) |
| Tearing strength: | 750/645(N/5cm) |
| Peeling off strength: | 90(N/5cm) |
| Anti-static: | ＜200 megohm or 1×10^8Ω |
| Suitable temperature: | -20° to +70° |
| Package: | Paper tube + Craft paper |
| Meter per roll: | 30m-506m |
APPLICATIONS:
Product Features
- AntistaticHelps manage electrostatic charge build-up in the fabric, giving manufacturers a material option for assemblies with specified static-control requirements.
- Abrasion resistantAn abrasion-resistant construction helps address rubbing and handling wear where the fabricated surface is exposed to repeated contact.
- Flame retardantA flame-retardant formulation for fabricators supplying projects with defined fire-behaviour requirements. Select the grade around the test method required for the finished application.
Sheet Tests Describe Different Behaviours
DLT-5311 lists tensile, tear and peeling properties for an 850gsm, 0.7mm composite. Tensile and tear behaviour concern different loading situations, while peeling concerns the bond within the sheet. None is a substitute for testing a fabricated membrane seam. Keep the directional test information with the sample and evaluate the actual panel join and attachment details separately from the underlying material figures.
Planning Panels Around an Arch
A proposed arch lining uses a flat reinforced sheet in a shaped assembly. Plan DLT-5311 panels around the curve, available width and support arrangement, including allowances for joins and retained edges. The 1000D base and PVC faces identify the starting construction, while the installation determines the fabrication details. Any required fire or static performance needs confirmation for the selected material and specified finished system.
Application requirements — Tunnel Linings
Specify the wall or roof area, panel dimensions, support spacing, edge connections and the intended lining function. Review tensile and tear properties, seam strength and the material response to moisture and repeated handling. State any project-specific fire or static-control requirements. A lining panel and a pressure-carrying ventilation duct perform different jobs and need separate selection criteria.
Finished Fabric-Lining Panel Specifications
Lining panels are made to the underground space and its supporting arrangement. There is no single standard panel size for every tunnel.
| Specification | Configuration |
|---|---|
| Finished Panel Dimensions | Project-specific length and height, taken from the lining cross-section and panel schedule |
| Panel Layout | Wall or roof sections divided around supports, access points and changes in tunnel geometry |
| Panel Connections | Welded overlaps where a continuous PVC facing is required; confirm the overlap and welding procedure on the selected assembly |
| Edge Reinforcement | Reinforced edges specified around hanging points and wall attachments |
| Mounting Details | Define each support and attachment location before cutting the panels |
| Drainage Interfaces | Coordinate drains, penetrations and termination details where the fabric is part of a lining or drainage assembly |
| Installation Format | Pre-cut sections or panels joined on site, selected around available access and handling space |
| Assembly Requirements | Confirm seam integrity, attachment strength and the project's fire and static-control requirements for the completed lining |
Construction Details
Panel Joints And Terminations
A lining layout needs continuous details at overlaps, edges and penetrations. Mark these on the drawing before setting the panel cutting dimensions.
Support And Drainage Layers
Specify the role of the fabric within the assembly, including any backing or drainage layer. The material data sheet alone does not establish permanent tunnel waterproofing performance.
Product Videos 1 video
Ventilation Fabric Production
Production & Material Footage
Discuss the application.
For tunnel membrane fabric rolls, share the arch geometry, lining function and required supporting tests.
Tunnel Membrane Fabric: The Reinforcement Behind the Panel
DLT-5311 is a PVC composite listed at 850gsm with a ±10gsm tolerance and 0.7mm thickness. A 1000D polyester base sits between PVC film faces in the documented construction. The finished sheet mass includes the covering material and reinforcement together. The yarn size identifies the textile component and should be considered alongside the complete material data.
The source lists directional tensile and tear values and an internal peeling value. These describe different aspects of the sheet, rather than interchangeable measures of strength. A membrane panel adds seams and attachment details whose performance depends on fabrication and installation. The exact coating or laminating production route is not stated, so process-specific claims need confirmation for the ordered material.
The width range is listed as 1.02m to 5.0m. Black and yellow RAL 1018 are available, with custom colour also listed. Self-extinguishing and antistatic descriptions require a defined test basis where relevant to the project. The inconsistent static-resistance expressions in the source should be resolved before a numerical requirement is placed on the order. These brief entries do not establish an installation-level approval.
For a proposed tunnel arch lining, develop the panel pattern around the actual curve, supports and edge retention. Check representative seams and any local reinforcement using the selected sheet. Thickness and weight do not establish the capacity of a supported membrane system. Define whether the lining is a surface enclosure, protective layer or another specified component, then obtain the appropriate design and material evidence for that function.