Technology
Technical Information Details

Surface active rubber (Pureslime)Sintering rubber (shape retaining rubber after application of high temperature)Low elongation rubberThermal expansion sponge rubberElectrically conductive rubberShape memory sponge rubberLight storage (phosphorescent) rubberLight emitting rubber (reactive to the incoming light from LED)

Development ProcessRubber Production Work Flow and Equipment

Features, technical characteristics and dimensions that are requested by customer are diverse. Very many types of materials such as natural rubber, chloroprene rubber (CR), silicon rubber (SR), acrylic rubber (AR) and others are readily available.
As a manufacture of industrial rubber products, Hokusay Rubber Industry has been engaged in the development and proposal of new industrial rubber products based on the long years of experience in findings and knowledge of rubber materials in combination with the advanced processing technology. Single cutting edge technology can give birth to epoch making products. The industrial rubber products require a combination of technologies accumulated inside a company during long years.
Use of the advanced technologies accumulated inside a company enables us to satisfy the market needs and manufacturing of high quality industrial rubber products.

Surface active rubber (Pureslime)
Surface active rubber (Pureslime) The surface active rubber is used in many fields such as automotive materials and building materials.
Featured by the improved surface smoothness (slidability characteristics), wearabilty, anti-freezing characteristic in winter, and prevention of abnormal sound by rubbing.
[Materials]
EPDM, CR (chloroprene rubber),
SR (silicon rubber) and others

[Final Products]
Door sealing sponge, sun-roof rubber,
front door rubber and bathroom door rubber
Sintering rubber (shape retaining rubber after application of high temperature)
Sintering rubber (shape retaining rubber after application of high temperature) The people engaged in extinguishing the fires can be injured by the falling glass as the rubber used in the window frame burns in the event of housing fires and building fires. This rubber retains the original shape even in the fire so as not to fall the glass.
[Materials]
CR (chloroprene rubber)

[Final Products]
Rubber for housing and building
Low elongation rubber
Low elongation rubber Featured by the low elongation characteristics. Used to prevent the ingress of rainwater by preventing gap from occurring in the joint on the external wall of housing. This type of rubber does not elongate during construction and does not shrink even after years of service.
[Materials]
EPDM

[Final Products]
Joint rubber for the external wall of housing
Thermal expansion sponge rubber
Thermal expansion sponge rubber This rubber starts expanding at around 300 degrees to fill the clearance on the external wall of housing preventing a flame from passing through the gap thus preventing a large fire when a fire occurs. This rubber expands three times in volume and has the flame retardant characteristics. Because it is soft, it can fill any clearance with the press-fitting method.
[Materials]
EPDM

[Final Products]
Rubber joint filler , sealing sponge
Electrically conductive rubber
Electrically conductive rubber Rubber is generally recognized as an electrically non-conductive material, but can be made electrically conductive by mixing appropriate materials, for either sold rubber or sponge rubber. A good example is the rubber roll used in printers and copying machines, which transfer electric charges. Other types of this rubber are made conductive enough to discharge the static electricity.
[Materials]
EPDM, Hydrin rubber, SR (Silicon rubber)

[Final Products]
Rubber roll for printer and copying machine, antistatic rubber
Shape memory sponge rubber
Shape memory sponge rubber The sponge protector for metal pipe is an example of the shape memory sponge rubber. The shape memory sponge rubber is processed to fit the shape of the metal pipe by bending. Because the shape memory sponge is light weight and a high thermal insulation property, it is widely used for heat insulation and also as measure against freezing.
[Materials]
EPDM

[Final Products]
Heat insulation material for pipes around engine, and for water heater pipes
Light storage (phosphorescent) rubber
Light storage (phosphorescent) rubber The light storage rubber absorbs the light energy of sunlight and of fluorescent lamp, and emits light in darkness. Because it can emit light in darkness, this rubber can help protect the safety of the people in the dark when used as a material for building corner, window frame and safety guidance sign.
[Materials]
SR (Silicon rubber)

[Final Products]
Material for building corner, window frame and safety guidance sign
Light emitting rubber
(reactive to the incoming light from LED)
Light emitting rubber (reactive to the incoming light from LED) The light emitting rubber emits light when it receives the ultraviolet light. Various colors can be generated by toning the color among the three primary colors of RGB (red, green and blue). The LED or blacklight that emits the ultraviolet light is used as a light source for this rubber.
[Materials]
SR (Silicon rubber)

[Final Products]
Material for building corner, window frame, safety guidance sign and stair-step