tesa Platinum Partner · Adhesive tape converting in Shenzhen

Adhesive Tapes for New Energy

Battery bonding, insulation, thermal management and flame-retardant tapes for EV packs, energy storage and solar modules.

Application reviewMaterial recommendationSample testingExport documentation
Reference illustration: Adhesive Tapes for New Energy
Reference illustration of the application, not a photograph of the Xiangyu plant

What we solve

Safety and insulation

Electrical isolation and flame resistance in a compact pack.

Thermal management

Heat transfer and thermal isolation in the same assembly.

Aging and humidity

Long service life under temperature cycling and humidity.

Automation

Parts that feed, align and bond reliably on high-volume lines.

Recommended tape solutions

ApplicationTypical constructionWhy
Cell and module bondingPET double-sided tape / transfer tapeInsulation, positioning and thin bond lines
Module insulationPI tape / flame-retardant tapeHigh-temperature and electrical insulation
Busbar and tab insulationPI tape / aluminum foil tapeThermal and electrical protection
Thermal interfaceThermal conductive tapeHeat transfer between components
Pack sealingAcrylic foam tape / specialty tapeStructural bonding and sealing

Starting points only. Confirm the final grade against your substrate, load and validation plan.

Typical applications

EV battery cell and module assemblyBattery pack insulationBusbar and tab protectionThermal managementEnergy storage systemsSolar module assembly

How a typical project runs

Battery module insulation for an EV pack

01

Challenge

A module supplier needed a die-cut insulator that could withstand temperature cycling and be placed quickly on an automated line.

02

Approach

We selected a PI-based construction, laminated it with a liner for pick-and-place, and produced a die-cut part with first-article dimensional inspection.

03

Outcome

The part was validated by the customer and moved to pilot production.

FAQ

Do you supply flame-retardant tapes?
Yes. Flame-retardant and halogen-free options are available depending on the application and standard. Please share the requirement and we will confirm the available documentation.
Can you die-cut battery insulation parts?
Yes. We cut PI, PET, foil and laminated constructions into custom shapes with liners suitable for automated placement.
How do you handle traceability for battery projects?
We keep batch and work-order records and can provide the available material documentation. Additional inspection or PPAP-style documentation can be discussed.

Related products

Polyimide tape rolls

Functional Tape

Conductive, polyimide, aluminum foil and thermal tapes for grounding, shielding, insulation and high-temperature protection.

View product
Reference illustration: die-cut adhesive parts nested on a release liner after weeding

Die-Cut Parts

Custom adhesive parts from drawing to ready-to-install: flat-bed, rotary, laser cutting and kitting.

View product
Order review

What the enquiry has to state before a grade can be judged

Battery and storage programmes fail a tape for reasons that are usually stated in the enquiry rather than discovered in the trial. These are the five that decide what we can propose.

What decides the outcomeWhat to state with the enquiryWhat we send back
The surface, not the assemblyWhat each side of the bond actually is: aluminium, nickel, copper, painted housing or a coated foil, and whether a release film or primer stays in placeWhat we are willing to hold on that surface, and the cases where we would not recommend the grade, confirmed by a trial on your material rather than by a datasheet
The exposure profileWhether the heat is continuous or cycled, whether humidity is steady or seasonal, and whether ultraviolet reaches the part at allAged data for the construction where the mill publishes it, or the trial plan for the aging you run yourself
The function requiredElectrical isolation, thermal transfer, grounding or shielding. They read similarly in a specification and behave differently on a packThe constructions that perform the function you named, with the limits of each stated plainly
The cut and the drawingCritical dimensions marked on the drawing, the assembly the part goes into, and the tolerance that actually matters at fitTolerances confirmed against the drawing at quotation, with first-article results before series converting starts
The release patternPrototype, pilot or recurring release, and whether the approved construction has to be held reserved for the programmeThe minimum order and lead time that follow from that pattern, written into the quotation rather than published as one figure

What a trial should prove before tooling is committed

A new-energy component is rarely rejected because the tape carried the wrong brand name. It is rejected because a condition was never tested: the surface it met, the age it reached, or the way the joint was built. A short trial plan written before the sample request saves more time than a longer datasheet review.

The order of the tests matters as much as the tests themselves. An as-constructed bond tells you the adhesive is alive; an aged bond on the real surface tells you whether the assembly will still hold in the third year.

  • Bond to the surface you will actually use, including any coating, anodising, paint or release film left in place
  • Test after the aging the product sees, not only as-constructed, because heat and humidity move a bond line further than most other variables
  • Build one sample the way the line builds it, so the trial part and the production part are not two different assemblies
  • Photograph the failure before discussing the fix; a cohesive tear, an adhesive release and a substrate failure each need a different answer
  • Write the acceptance criteria onto the drawing, so a later substitution is judged against the same standard rather than a new opinion
Honest boundaries

Where a converter ends and the programme begins

What we take on

Selecting and converting the adhesive layer: grade proposal, slitting to the width your applicator takes, die-cutting to the drawing, incoming and first-article inspection, and the records that go with the shipment.

What we do not

Pack design, cell selection, thermal modelling, structural analysis or a signed engineering opinion on your assembly. A supplier who offers those without the equipment to run them is offering a document, not data.

What we will not claim

A flame rating, thermal conductivity figure or durability life we cannot evidence for the specific construction on your order. If the grade manufacturer publishes it, we pass it on with the source; if not, we say the number is not ours to give.

What we agree in writing

The approved construction, the surfaces it was proven on, and the substitution route if a material becomes unavailable. Those three items are what make a re-order repeatable rather than re-qualified every time.

FAQ

Battery and storage buyers ask

Can you supply a complete pack solution?
No, and it is better to say so. We work on the adhesive layer: the tapes, insulation plies, thermal interface materials and die-cut parts you specify. Your engineering team decides how they sit inside the pack, and we quote against that decision rather than pretending to make it.
Do you keep new-energy grades in stock?
It depends on the construction and the width, not on the category. Common insulation and bonding constructions are converted from material we can obtain quickly; a grade you have qualified for a programme is planned against your release pattern, and both the stock position and the lead time are stated in the quotation.
What paperwork comes with a shipment?
The datasheet for the construction quoted, lot or batch identification where the mill provides it, and the compliance statements the manufacturer publishes for that grade, REACH and RoHS among them. Where a document does not exist for a material we say so at enquiry stage; a certificate we cannot issue is worth less than a limitation stated early.
Can you manage change control on a qualified construction?
As a programme requirement rather than an assumption. If your project needs it, the notification terms are agreed at order review and the approved construction is recorded against your order, so an adhesive lot, backing supplier, liner or cut-route change is discussed before the affected rolls ship.
Can you replace a tape already qualified on a cell?
By construction rather than by name. Send the part you use, and we describe what it is, where it differs from what we can supply in backing, adhesive, thickness and liner, and which differences matter for your assembly. The final decision is made on your substrate, not on a comparison table.

Need a material that survives the climate?

Send your application and target market. We will shortlist grades for heat, humidity and UV before you commit to tooling.