01 / CUSTOMER PROBLEM
Control heat and geometry
A prepreg tool must hold its surface and size through cure and later thermal cycles. A defined cure route reduces guesswork around consolidation, spring-back, voids and dimensional drift.
Product family
Tooling Prepregs
This page introduces LTP220 and LTP240 tooling prepregs. Use the technical data sheet for each grade to determine its initial cure, post-cure and service conditions.
Engineering view / Tooling prepregs
Make the cure route part of the tool design
Prepreg tooling is a controlled system: resin, reinforcement, storage, lay-up, vacuum or pressure and cure work together. EPTEK’s tooling prepreg routes distinguish practical low-temperature initial cure from higher-temperature curing for more demanding composite tools.
02 / SELECTION LOGIC
Choose the cure window
Use LTP220 and LTP240 according to the project’s cure temperature, thermal exposure, tooling size, pressure route and inspection requirement. Do not transfer a Tg or service claim from one grade to another.
03 / PROCESS CHECKPOINTS
Treat storage as process data
Record storage, conditioning, lay-up, debulk, vacuum integrity, bagging, cure, post-cure, trim and surface inspection. Keep the actual laminate thickness and cure history with the tool record.
04 / RELEASE CHECK
Verify the complete stack
Prepreg, gelcoat or surface film, backing structure, release system and repair method should be trialed together. The linked TDS remains the authority for cure and handling limits.
Keep storage, lay-up and cure in one record.Share geometry, temperature or hardness target, process route, quantity and finish requirement. The matching EPTEK TDS remains the authority for grade-specific values and handling limits.Contact us ↗
Product data
Product data
This page provides technical data and cure requirements for LTP220 and LTP240.
01 / LTP220
LTP220
Low-temperature tooling prepreg
- Cure route
- Low-temperature pre-cure route
- Service temperature
- Up to 374 °F
- Process note
- Confirm storage and cure limits in the TDS
Translated TDS · PDF ↗
02 / LTP240
LTP240
High-temperature tooling prepreg
- Cure route
- 356–392 °F cure route
- Application
- High-temperature carbon-fiber tooling
- Process note
- Confirm the selected lay-up and cure schedule in the TDS
Original TDS (Chinese) ↗
01 / PRODUCT FAMILY
LTP220
Low-temperature pre-cure tooling route; confirm cure and service limits in the TDS.
02 / PRODUCT FAMILY
LTP240
LTP240 is the high-temperature-curing tooling-prepreg version; cure and DMA reference data are defined in its technical data sheet.