Joining Adhering carbon (CFRP/CFRTP) to different types of material by reactive hot melt

Technical Classification:
[ Joining ]
[ Products / Processed Products ]
[ automation of adhesive application ] [ different kind of material ] [ increase of line speed ] [ Nonstructural adhesion ] [ solventless ]

Point of the Proposed Technology

In the newly developed hot melt adhesive, the merits of the conventional adhesives, such as adhesion of variousmaterials, high-speed curing and strength, have been kept and the demerits such as hydrolysis characteristic,generation of reactant gas at the time of reaction and weather resistance have been modified. In addition, it isenvironmental-friendly hot melt without discharge of amine, solvent or the like.


1. Increase of line speed
2. Solventless
3. Adhesion of dissimilar materials
4. Durability and hydrolysis resistance

Conventional Technology

The conventional hot melt is composed of an ethylene system, a rubbersystem, or an olefin system with the heat resistance up to 100°C, making itlimited to be used in the automobile industry.
In the case of the existing hot melt based on a reactive urethane system,durability is a problem due to hydrolysis.

New Technology

Because the reactive hot melt consists of only one type of liquid and has lowviscosity, it is possible to perform adhesion by use of a robot with a coatingapplicator.
Its pressing time is only several seconds, and it can be used for mass-production.
In the case of bonding to hard adhesion materials, adhesion strength can beincreased by performing plasma processing before bonding work.
In cooperation with the Shizuoka Prefectural Industrial Technology Center, wecan offer an adhesion test with plasma processing on a trial basis.

Technology Deployment and Cooperation

Development Stage
Prototyping / experimental Stage (to be completed in 2020/12; progress: 90%)
Intellectual Property Right
Joint Researchers (their role)
Not published
Example of Application
Currently proposing for the fields engaged in joining field nonstructural parts between carbon fibers anddissimilar materials used for nonstructural parts for automobiles, aircrafts and various industries.
Technical Problems
・Hot melt fusion device is separately needed. ・The hot melt production volume is limited (consult us.) ・ Use for structure is impossible.
Collaborator needed to Improve
End users who want bonding carbon fiber to dissimilar material (non-structural part)       
Technical WEB page接着剤・パテ.html


Personnel / Department
Development Dept. Head Office / Managing Director, Kengo Suzuki
120-17 Genmoku-cho, Naka-ku, Hamamatsu-shi, Shizuoka, 430-0948 Japan
Inquiry Form

Outline of Company and Organization

120-17 Genmoku-cho, Naka-ku, Hamamatsu-shi, Shizuoka, 430-0948 Japan
Capital / No. of Employees
10,000,000 yen / 35 employees
Product Line
Major Customers
Overseas Base(s)
Japan Adhesive Industry Association accredited adhesive managers: 10 people, Member of East Japan Adhesive Commerce Association, Member of NCC Research Society, Member of Japan CLT Association
Company/Organization WEB page

Update date: 2020/1/29

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