Aluminum Hydroxide Honeycomb Core Series

The Aluminum Hydroxide Honeycomb core series is made by continuous molding lamination of paper with a mixture of aluminum hydroxide into a honeycomb shape, then formed into a hexagonal shape at the time of expanding. It is a core material with good workability which enables consecutive expanding and is used mainly as core material for fireproof doors and partitions. The materials is made from mixture of Aluminum Hydroxide paper, so it is extremely light with an appropriate strength and used in various fields.


1. It is a core material made by consecutively laminating the base paper to form a hexagonal shape at the time of expanding.
2. It uses environmentally-friendly materials and is extremely lightweight.
3. The paper made with a mixture of aluminum hydroxide qualifies as 1st class fire prevention grade, margin clearing the 40% organic or less by a wide margin.
4. Combining requested volumes and making into continuous paper leads to simplification of work and labor saving.
5. It has a thickness accuracy of -0.0mm~+0.3mm.
6. Free selection is possible to meet production systems from low to high volume production.
7. Using a honeycomb core expanding machine enables simple expanding to fit your desired size.

Typical Uses

Fireproof doors for individual houses, apartments, and buildings.
Core materials for flush structures such as partitions

Types and standards

※Cell size is the size when used with standard dimensions.

※Please take care regarding the width, length, frame material inner dimensions etc. to be used when ordering.

※Some dimensions and continuous paper can be supported. Please inquire with us.
※We also have a expanding machine to expand aluminum hydroxide honeycomb cores (expand them in a folded state).
※Strength testing methods are in accordance with JIS-A6931. Strength data is average values and not guaranteed values.

Usage illustration of the honeycomb core expanding machine
(Recommended for expanding (stretching) of continuous paper products)

4-155, Higashi Komaki Aichi 485-0831 Japan