Material definition
Approved material grade, complete layer stack, adhesive, carrier and liner recorded against the customer drawing
Custom product
Custom PET & PI Insulation Parts
Precision die-cut and adhesive-backed films for dielectric isolation, wrapping and barrier functions in dense electronic and battery assemblies.
Custom die-cutMulti-layer laminationPrototype supportDocumented inspection
Function
What this component solves
Creates thin electrical separation around PCBs, housings, busbars, batteries, terminals and power components.
Typical install positions
- PCB underside
- Housing wall
- Battery terminal
- Busbar
- Folded component wrap
Engineering selection
Data your engineering team can specify
We define the finished part around the selected material grade, test basis, drawing and assembly conditions. The items below can be included in the project review and data package.
Typical screening rangeCustomizable by FLEXCENDGrade-specific data availableAssembly validation required
Data pointWhat FLEXCEND can define or provide
PET film thicknessRepresentative electronics-film range: 0.012–0.500 mm; final range depends on grade, forming and die-cut geometry
PI film thicknessRepresentative high-performance film range: 0.0127–0.125 mm
Dielectric strengthSelected PI grades: about 154–315 kV/mm; selected PET dielectric grades can reach about 290–350 kV/mm under their stated tests
Dielectric constantRepresentative values at 1 kHz: PET about 3.25; PI about 3.4–3.5
Volume resistivitySelected PI reference grades: approximately 1×10¹⁷ Ω·cm under published conditions
TemperatureSelected PET dielectric films are published to about 125°C; PI may support higher-temperature designs, but adhesive and assembly set the final limit
Dielectric strength / breakdownGrade-specific values supplied with thickness and test method identified
Volume resistivity and dielectric constantElectrical data provided where relevant to the selected film grade
Temperature ratingContinuous-use, short-term and relative thermal index data matched to the exact material
Dimensional stabilityShrinkage, CTE, forming and fold behavior reviewed for the process temperature and geometry
Mechanical propertiesTensile, elongation, tear and bend requirements considered for wraps, tabs and thin webs
Flammability / complianceUL 94, RoHS, REACH and halogen documentation shown only for the chosen grade
How to read these values: Published ranges are representative design-screening windows across material families FLEXCEND can source, convert and evaluate. They are not one universal finished-part specification. Final values are confirmed against the exact grade, thickness, adhesive stack, test method, approved drawing, production lot and complete customer assembly.
Representative sample
See the material and converted geometry.
This image was extracted from the supplied product library and shows a representative part family. Exact material, grade, thickness and dimensions are defined by the approved drawing and material specification.
Engineering evidence
A project data package—not a generic material claim.
The exact content is agreed by program. Performance values stay linked to the selected material, thickness, method and test condition.
Performance evidence
Supplier TDS or relevant test data tied to the selected grade, thickness, method and test condition
Dimensional control
Critical dimensions and tolerances reviewed against material behavior, part geometry, tooling and process route
Prototype / first article
Fit samples, comparison sets and dimensional reporting can be agreed before production release
Compliance documents
RoHS, REACH, halogen, flammability or other declarations supplied only when supported by the exact selected material
Traceability and delivery
Drawing revision, material or production lot, inspection plan, liner format, kitting and packaging defined by program
Made to drawing
Configure the complete part—not just the base material.
We review how material, adhesive, liner, lamination, geometry and delivery format work together at assembly.
- Score and fold features
- Adhesive zones
- Liner and pull tab
- Lamination with foam or graphite
- Embossing / forming review
- Kiss-cut sheet or individual pieces
Fast technical response
Send the inputs engineers use to make a real selection
A drawing plus these operating conditions lets us recommend a practical construction instead of a generic material.
- Working and transient voltage
- Creepage, clearance and edge geometry
- Operating and process temperature
- Available thickness and bend requirement
- Adhesive surface and flame requirement
- Drawing, assembly sequence and annual volume
Engineering boundary
Working voltage, creepage, clearance, edge geometry and the complete assembly determine insulation performance; material data alone is not a system rating.
Application fit
Where this product is commonly considered
application
Drone Flight Controller
Integrate heat spreading, gap filling and electrical insulation around dense flight-controller electronics using die-cut parts matched to PCB layout and enclosure interfaces.
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UAV Battery Protection
Custom lightweight spacing, cushioning, insulation and thermal-interface parts for UAV battery packs designed by the customer’s battery engineering team.
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AMR / AGV Controller
Custom thermal-interface, shielding and insulation components for compact mobile-robot controllers, power electronics and communication modules.
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Manufacturing path
Slit, laminate, die-cut and inspect.
Prototype and production methods are selected around the material behavior, geometry, laminated stack and program volume.
See factory capabilitiesEngineering review
Request a custom pet & pi insulation parts review
Tell us the installation position, material challenge, environment and project stage. Our team will review the drawing and recommend a practical construction.