RO Membrane Glue Consumption Calculator
This RO membrane glue consumption calculator estimates the polyurethane glue used to roll the membrane and, for industrial elements, the epoxy resin used for the fibreglass overwrap — per element and per batch.
Estimate Your Glue Consumption
Pick an element size. PU glue is driven by membrane area; epoxy resin is added for industrial elements (0 for household). Everything is editable.
PU glue = membrane sheet area × PU rate (default 30 g/m²). Epoxy is a per-element figure for the industrial fibreglass overwrap — tune both to your process.
Estimate only. Glue use varies with bead size, process and operator — confirm with WECOME.
Two Glues, Two Jobs
RO element production uses two different adhesives, so the calculator estimates each separately:
Fit Glue Into the Whole Material Plan
Glue is one consumable among several. Roll it into the full picture with the element BOM calculator, and choose the right adhesive against the adhesive & glue data sheet.
Glue behaviour also affects quality — curing and bead consistency show up in leak testing, so keep it in your QC checklist.
Glue affects more than cost
- Sealing reliability & leak-test pass rate
- Curing time vs line speed
- Bead consistency vs scrap
- PU shelf life and mix ratio
- Epoxy only on industrial overwrap
Glue Is Small in Cost, Big in Consequence
Get the amount or the type wrong and it shows up as leaks, scrap or stalled cure — not just a line on the invoice.
Too Little Glue
Starved glue lines leave gaps that fail the leak test and scrap the element.
Too Much / Wrong Type
Excess or the wrong adhesive wastes material and can disturb rolling and cure.
Shelf-Life Slips
Out-of-date or mis-mixed glue cures poorly and undermines sealing reliability.
Need PU glue or epoxy resin for production?
Tell us your element sizes and volumes — we’ll confirm glue usage and supply the right adhesives for rolling and overwrap.
Glue Consumption FAQ
How much glue does one RO membrane element use?
For the membrane rolling, polyurethane glue use scales with membrane area at roughly 30 g/m², so a 4040 element uses about 280 g of PU. Industrial elements also use epoxy resin for the fibreglass overwrap. Use the calculator above with your own rates for a closer figure.
What glue is used to make RO membrane elements?
Two adhesives are used: polyurethane (PU) glue seals the glue lines when rolling the membrane, and epoxy resin is used for the fibreglass overwrap on industrial elements. They do different jobs and are estimated separately.
Do household RO elements use epoxy resin?
No. Household elements such as 1812 and 2521 use a tape overwrap rather than a fibreglass-and-epoxy overwrap, so they use PU glue only. The calculator sets epoxy to 0 for those sizes.
How is glue consumption calculated?
PU glue is the membrane sheet area multiplied by a glue rate in grams per square metre. Epoxy resin is added as a per-element figure for industrial overwrap. Both are summed per element and multiplied by quantity for the batch total.