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Safety Systems Business

Nippon Kayaku has a long history and a wide variety of technologies related to the study, development, and manufacturing of explosives. Applying these technologies, we have developed our own gas generator "Inflator," which inflates automotive airbags, our small gas generator "Micro Gas Generator," which generates driving force to wind seat belts around vehicles, etc., and our squib, an ignition device, which is a key component of these products. We contribute to enhancing safety in automobile societies by providing such products to the global market.

We have plants in five countries around the world, with plans for further global expansion.

Main Products


An inflator is a gas generator that inflates the air bag. Nippon Kayaku started with inflators for driver's seat and passenger seat applications, and later expanded our scope to add inflators for side air bags, curtain air bags, and knee air bags to our portfolio. We continue to develop new products, to enhance the safety of vehicles.

Micro Gas Generators

A micro gas generator is a device that acts to retract the seatbelt (seatbelt pretensioner) in the event of a collision.
The retraction of the seatbelt fixes the body to the ideal position in relation to the inflated airbag. This increases the effectiveness of the airbag, maximizing the safety for the passenger.
As a safety device during an accident, it has begun to be used for various purposes, such as the shifting of the headrests or seats, or a system where the front hood is popped up to protect pedestrians.


A squib is an ignition part embedded in inflators and micro gas generators.
When the sensor detects a collision, an electric current is sent to the squib, and then the heat that is generated ignites the agent inside the squib, leading to its activation. Upon activation, the ignition and heat from the squib is transferred to the gas generating agent of the inflator or micro gas generator which generates the gas used to propel the device.

Operating Mechanism of Automobile Safety Parts

  1. The Collision sensor is a device embedded in the front portion of the vehicle, which detects collisions.
  2. The Diagnostic device determines whether a collision is caused by an accident or not.
  3. When determined as an accident, an electrical signal is relayed to the squib.
  4. The squib's explosive agent is ignited by the relayed electrical signal.
  5. Gas generating agent is ignited, and gas is generated.
  6. When the "airbag" is inflated, the "seatbelt pretensioner" retracts the seatbelt, absorbing the shock received by the passenger.

*This process from 1 to 6 is completed in about 0.05 seconds.

PARASAFE® - An Emergency Parachute System for Drones

Commercial drones are used in various areas, including logistics, surveying, inspections and rescue operations. Nippon Kayaku has created a parachute system for drones, PARASAFE, through the application of technologies used in the manufacturing of pyrotechnical devices, such as inflators for automotive airbags and gas generators for seatbelt pretensioners. In the even a drone inadvertently plummets while in flight, PARASAFE detects the plummet, activates a pyrotechnical device remotely in order to deploy an emergency parachute, which enables a soft landing. PARASAFE protects the drone, its payload and people on the ground, allowing use of drones in a wide range of areas and situations. In line with the needs of the drone industry, we continue to develop the system for use with various drones with the aim to launch PARASAFE in Japan in FY 2021.

Related group companies

Kayaku Safety Systems Europe a.s.
Manufacturing and sales of squibs and micro gas generators

Kayaku Safety Systems (Huzhou) Co., Ltd.
Manufacturing and sales of inflators and micro gas generators

Kayaku Safety Systems de Mexico, S.A. de C.V.
Manufacturing and sales of micro gas generators and squibs

Kayaku Safety Systems Malaysia Sdn. Bhd.
Manufacturing and sales of inflators, micro gas generators and squibs

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