Fukuwa Rubber Co., Ltd. sells rubber raw materials such as rubber mixers and fluororubber.

Founded 112 years ago

A track record in the rubber industry

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2025.12.17

New Year holiday notice

2025.07.18

Summer vacation notice

2024.12.04

New Year holiday notice

About Us

About

Rich knowledge and
technical capabilities
Specializes in fluoro rubber
× Products handled
fulfillment
Diverse purchasing routes both domestically and internationally

110 years of experience in the rubber industry

The Fukuwa Rubber Group, centered on Fukuwa Rubber Shoji Co., Ltd., has been dedicated to the rubber industry for 110 years since its founding.

We are a rubber-related consulting company that sells rubber raw materials and Rubber chemicals, has a rubber smelting factory in Japan, kneads various standard rubbers, prototypes, tests, and mass produces compounds that meet customer needs, and sells various rubber-related products.

Recently, we have expanded into new businesses such as sales of synthetic resins.

Quality / Environmental Policy

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Handling product

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Products developed by our company

Our Feature

Strengths of Fukuwa Rubber Shoji Co., Ltd.

About Intermix K4

There are two types of kneading machines: open kneading machines and closed kneading machines.
Open-type machines include roll machines (also called open rolls, two-roll machines, and roll mills). On the other hand, closed types include kneaders, Banbury, and Intermix. Its structure is that there is a room called a chamber containing the rubber material, and two rotors are placed inside this chamber, which kneads the rubber that is placed between them. There are two types: the tangential type, which uses the shearing force of the inner wall of the chamber within the rotor, and the meshing type, which uses the shearing force generated when the rotors mesh.Our company uses the meshing type intermix. The stronger the power during kneading, the more heat will be generated, and since the Banbury has stronger power than the kneader, it will generate more heat.

There are two types of kneading machines: open kneading machines and closed kneading machines.

Open type machines include roll machines (also called open rolls, two-roll machines, and roll mills).

On the other hand, closed types include kneaders, Banbury, and Intermix.
Its structure is that there is a room called a chamber containing the rubber material, and two rotors are placed inside this chamber, which kneads the rubber that is placed between them. There are two types: the tangential type, which uses the shearing force of the inner wall of the chamber within the rotor, and the meshing type, which uses the shearing force generated when the rotors mesh.Our company uses the meshing type intermix.
The stronger the power during kneading, the more heat will be generated, and since the Banbury has stronger power than the kneader, it will generate more heat.

Horai Rubber's Intermix K4

The intermeshing rotor has strong shearing force, and compared to the tangential type, the heat generated by power can be kept lower than that of conventional kneading machines, and it is designed to improve the dispersibility of rubber and compounding agents.
Additionally, compared to Banbury, which requires a two-story building due to its large size, the Kneader has the advantage of being easy to clean and maintain, as it only requires one floor, which helps improve quality.
We also have two lines: a phthalate-only line and a non-phthalate-only line.

Factory equipment
K4 intermix (80L) 2 units
35L kneader 1 units
22 inch roll 1 spaces
18 inch roll (for phthalate only) 1 spaces
16 inch roll 1 spaces
batch off machine 1 spaces
JSRⅡF type culastometer 1 spaces
test press 1 spaces
wallace viscometer 1 spaces
Test roll (8 inches) 1 spaces
5 type shopper 1 spaces
automatic tensile testing machine 1 spaces

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Blog

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03-3806-5811

(9:00-17:00/Closed on Saturdays, Sundays, and holidays)

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