Description

Corehold HB is a heat activated backing material used to stabilise and hold honeycombs on vacuum fixtures during machining operations. Corehold HB is a strong backing paper with a one side coating of modified epoxy resin. It is nontacky at room temperature.

Technical data

Carrier type	Heavy Paper
Adhesive type	Modified epoxy
Adhesive thickness	0.229 mm (0.009 inch)
Backing thickness	0.127 mm (0.005 inch)
Weight	180 g/m²
Shelf life	12 months from date of shipment when stored horizontally in original packaging at 22°C (72°F)

Sizes

Width	Length	Packaging
1.32 m (52 inches)	48 m (158 feet)	Roll

Application

• Cut to size with extra around the periphery to allow holding.

• Remove poly backer and place resin side down onto the honeycomb.

• Apply heat and light pressure. Good results can be obtained with a laundry iron to apply

heat and smooth backer onto honeycomb.

• Iron should be set to between 50°C (122°F) and 60°C (140°F). This may require adjustment depending on

honeycomb material type and weight. Once cooled the honeycomb will be strongly stuck to the Corehold.

• Removal can be achieved by warming to 50°C (122°F) to 60°C (140°F) for 5 minutes in an oven or with direct

heat from an iron or heat gun. Then peel away Corehold backer. This may require adjustment based on

material type and weight.

Sustainability

Notes

• The maximum use temperature is dependent upon the duration at maximum temperature and is process

specific, Airtech recommends testing prior to use.

• Some trace of resin will remain on the core and can not be removed by added heat, nor cured. It may be

removed using a solvent that can dissolve epoxy and meets the local environmental regulations.

Last updated : 2025-02-24

As the conditions or methods of use, including storage, are beyond our control, Airtech International, Inc. does not assume responsibility for the performance of this material for any particular use. The material is sold "as is". Airtech International, Inc. disclaims, and buyer waives, any and all implied warranties, including without limitation the implied warranties of merchantability and of fitness for particular use. The information contained herein represents typical properties and should not be used for specification purposes. Any translation is provided for your convenience only. The official language is English and the official law is California, USA.