RO membrane bonding tape, also called RO element outer wrap tape, is applied around the outside of a rolled membrane assembly to retain its shape during finishing, handling and subsequent production steps. A controlled wrap helps keep the element body compact while providing a clean, consistent outer surface for product identification.
WECOME supplies 50 m rolls in BOPP, CPP, PP+PE and MOPP, with glossy or matte finishes, standard widths from 240 to 320 mm, and multiple stock colours. Width, substrate, surface finish, colour and adhesive behaviour should be matched to the element format, rolling tension and the buyer’s validated production process.
What the Outer Wrap Tape Does in RO Element Production
Match the element recipe
Choose width, film family, finish and colour according to the element drawing and winding process.
Position the leading edge
Keep the tape square to the element body to reduce telescoping, wrinkles and uneven overlap.
Control tension and overlap
Apply repeatable tension so the finished roll remains compact without distorting the membrane assembly.
Inspect the finished body
Check adhesion, colour, edge alignment, bubbles, creases and surface consistency before release.
Material and Surface Options
BOPP glossy
A clean, reflective surface for blue, white or custom-colour outer wraps. White-adhesive-backed variants are listed for selected widths.
CPP matte
A non-glossy finish available in white, blue and green for 280 mm element programs.
PP+PE matte
A multi-material film family offered in blue, white, orange and golden colour options.
MOPP matte
A matte polypropylene film option supplied in blue or white for the listed 280 mm format.
RO Membrane Bonding Tape Specifications
| Model No. | Size | Base Material | Surface / Adhesive Backing | Rolls / Box | Boxes / Pallet | Outer Carton | Gross Weight / Box |
|---|---|---|---|---|---|---|---|
| LG-255-BLUE | 255 mm × 50 m | BOPP | Glossy | 10 | 40 | 240 × 280 × 580 mm | 13 kg |
| LG-280-BLUE | 280 mm × 50 m | BOPP | Glossy | 16 | 20 | 460 × 460 × 300 mm | 23 kg |
| LG-280-WHITE | 280 mm × 50 m | BOPP | Glossy | 16 | 20 | 460 × 460 × 300 mm | 23 kg |
| LG-240-BLUE (White Based) | 240 mm × 50 m | BOPP | Glossy / white adhesive backing | 10 | 40 | 240 × 280 × 580 mm | 12 kg |
| LG-260-BLUE (White Based) | 260 mm × 50 m | BOPP | Glossy / white adhesive backing | 10 | 40 | 240 × 280 × 580 mm | 14 kg |
| LG-280-BLUE (White Based) | 280 mm × 50 m | BOPP | Glossy / white adhesive backing | 16 | 20 | 460 × 460 × 300 mm | 23 kg |
| LG-320-BLUE (White Based) | 320 mm × 50 m | BOPP | Glossy / white adhesive backing | 16 | 20 | 460 × 460 × 300 mm | 25 kg |
| LG-280-XXX (Custom Colour) | 280 mm × 50 m | BOPP | Glossy / white adhesive backing | 16 | 20 | 460 × 460 × 300 mm | 23 kg |
| PM-280-WHITE | 280 mm × 50 m | CPP | Matte | 12 | 20 | 460 × 460 × 300 mm | 25 kg |
| PM-280-BLUE | 280 mm × 50 m | CPP | Matte | 12 | 20 | 460 × 460 × 300 mm | 25 kg |
| PM-280-GREEN | 280 mm × 50 m | CPP | Matte | 12 | 20 | 460 × 460 × 300 mm | 25 kg |
| MS-280-BLUE | 280 mm × 50 m | PP+PE | Matte | 10 | 20 | 460 × 460 × 300 mm | 25 kg |
| MS-280-WHITE | 280 mm × 50 m | PP+PE | Matte | 10 | 20 | 460 × 460 × 300 mm | 25 kg |
| MS-280-ORANGE | 280 mm × 50 m | PP+PE | Matte | 10 | 20 | 460 × 460 × 300 mm | 25 kg |
| MS-280-GOLDEN | 280 mm × 50 m | PP+PE | Matte | 10 | 20 | 460 × 460 × 300 mm | 25 kg |
| MOP-280-BLUE | 280 mm × 50 m | MOPP | Matte | 12 | 20 | 460 × 460 × 300 mm | 25 kg |
| MOP-280-WHITE | 280 mm × 50 m | MOPP | Matte | 12 | 20 | 460 × 460 × 300 mm | 25 kg |
Dimensions are shown as width × roll length. Carton sizes are shown as length × width × height. “White Based” has been translated as a white adhesive backing; confirm the controlled wording on the approved technical data sheet before quotation or printing.
How to Select RO Element Outer Wrap Tape
Start with element length
Match tape width to the element drawing and the intended coverage. The listed 240-320 mm range is primarily aligned with compact household element programs.
Choose the film family
Compare BOPP, CPP, PP+PE and MOPP using actual winding tension, overlap, handling and finished-product requirements.
Define surface appearance
Select glossy or matte according to visual identity, print or label requirements, friction and process handling.
Confirm colour control
Use stock blue, white, green, orange or golden options, or approve a physical colour sample for a custom programme.
Validate adhesive behaviour
Run winding, immersion and ageing checks under the intended water chemistry and temperature rather than selecting on initial tack alone.
Approve packing and supply
Confirm rolls per carton, pallet configuration, label traceability, order volume and replenishment schedule before release.
Production Benefits
Multiple stock colours
Blue, white, green, orange and golden options support product identification and consistent presentation.
Custom width and colour
Special dimensions and colour matching can be evaluated against drawings, samples and minimum production requirements.
Controlled surface appearance
Uniform colour, clean edges and a consistent film surface help reduce visible dots, streaks and irregular finishing.
Process-ready flexibility
Film and adhesive are selected to support wrapping tension, overlap and high-throughput element production.
Water-resistance validation
Adhesion can be checked through controlled immersion and ageing tests for the buyer’s intended operating conditions.
Four substrate families
BOPP, CPP, PP+PE and MOPP options give purchasing and process teams a broader specification range.
Incoming Inspection and Process Validation
Approve the tape on the real winding process
A supplier sample should be evaluated on the intended membrane element recipe. Film appearance alone cannot confirm production compatibility or long-term adhesion.
Typical Applications
Compact spiral-wound element production
Outer wrapping for residential and household membrane formats that match the listed 240-320 mm widths.
Consistent factory production
Standard or custom-colour consumables for recurring membrane rolling, finishing and product identification.
Application-specific RO elements
Material selection for pure water, ultrapure water, wastewater reuse or desalination programmes after compatibility validation.
Frequently Asked Questions
What is RO membrane bonding tape used for?
It is wrapped around the outside of a spiral-wound RO element to retain the rolled assembly, support handling and finishing, and provide a consistent outer appearance.
Is outer wrap tape the same as central tube tape?
No. Outer wrap tape is used on the element body. Central tube tape is applied at the tube ends before rolling to isolate process adhesive from the trimming area.
Which widths and roll lengths are available?
The listed standard range includes 240, 255, 260, 280 and 320 mm widths. Every listed model is supplied in a 50 m roll.
Which base materials and finishes are listed?
The range includes BOPP glossy, CPP matte, PP+PE matte and MOPP matte models. The correct option should be validated on the buyer’s actual rolling process.
Can WECOME supply custom colours or widths?
Yes. Custom width and colour programmes can be evaluated. Buyers should provide an approved colour sample, target dimensions, annual demand and application requirements.
Can the standard range be used for 4040 or 8040 RO elements?
Do not assume full industrial coverage from width alone. Submit the element drawing and wrapping method so the required width, overlap and application pattern can be confirmed.
What should be checked before placing a bulk order?
Confirm model, width, roll length, film family, finish, colour, adhesive backing, winding tension, overlap, immersion performance, carton quantity, pallet configuration and lot-traceability requirements.
Related Products and Technical Resources
Specify the Right Outer Wrap Tape
Send the element drawing, tape width, film preference, finish, colour, wrapping method and expected order volume for model confirmation.