Nakata Engineering Co.
Contact: Sales Manager
619 Kande-Cho
Minam 1,
Nishu-Ku, Kobe 652
Japan
Phone: 078 965 1015
Fax: 078 965 1020
Every day we all use numerous products made of rubber, which are indispensible to our modern way of life. Among them are tires for trucks and automobiles, belting, hose, gloves, and innumerable other items.
Since Nakata Engineering Co. was established in 1914 in Kobe, the cradle of the Japanese rubber industry, we have designed and manufactured production machinery and process control equipment to assist our rubber industry customers in achieving greater efficiency, standardization, and quality control of the products they produce.
Over the last 85 years, Nakata Engineering has earned a reputation for excellence in quality, reliability and service, and today ranks as a leading supplier of production machinery, equipment and facilities for the world-wide rubber industry. We now export to North America, Europe, the Middle East, and more than 10 other countries in Asia and around the globe.
Through the strenuous efforts of our research and development department, Nakata Engineering has always led in the deployment of state-of-the-art manufacturing and process control equipment for the rubber industry. Today, these efforts focus not only on production efficiency and quality improvement, but also on saving energy and improving the environment. In particular, our expertise in rubber extrusion technology and equipment has helped our world class tire manufacturing customers meet the increasing standards for cost, efficiency, tire/vehicle performance, and safety demanded by the global vehicle industry.
In the future, we will continue to deliver the highest quality equipment and services to meet the changing needs of our customers and society as a whole.
History of Nakata Engineering Co., Ltd.
June 1914 Masashi Nakata established Japanís first company to build machinery for the rubber manufacturing industry.
Oct. 1944 Nakata Zoki Co., Ltd. was established.
Sept. 1949 First product exports to India.
Sept. 1967 To achieve future growth, the company reorganized, with Sumitomo Electric Industries, Ltd. participating in the management.
June 1969 The company entered into a technical license agreement with Paul Troester Maschinen-Fabriken of Germany concerning cold feed type and vent type extruders, and continuous vulcanization equipment.
Sept. 1972 The company became an affiliate of Sumitomo Rubber Industries, Ltd. following the transfer of shares from Sumitomo Electric Industries, Ltd.
June 1981 The technical license agreement with Paul Troester Maschinen-Fabriken was revised to include manufacture and sales of shear head roller-head unit and calender with interchangeable roller-sleeves for roller-head.
June 1983 Entered into a patent license agreement with Uniroyal Englebert Reifen GmbH of Germany concerning pin type extruders; also entered a license agreement with Paul Troester Maschinen-Fabriken for production and sales of pin type extruders.
Dec. 1985 Completed a new head office building in Kobe.
May 1988 The license agreement with Paul Troester Maschinen-Fabriken for pin type extruders was terminated.
July 1992 Entered a business partnership with Kobe Machinery Co., Ltd. to enhance future growth.
Dec. 1992 Majority ownership (53.5%) of Kobe Machinery Co., Ltd. was acquired and directors were assigned to oversee production.
Dec. 1993 An additional 20% of the shares of Kobe Machinery Co. Ltd. was acquired.
Jan. 1995 The main production system was moved to Kobe Machinery Co., Ltd.
Apr. 1996 Kobe Machinery Co., Ltd. was merged into the company and the corporate name was changed to Nakata Engineering Co., Ltd.
June 1999 85th anniversary of the company.
June 2002 ISO9001 (Quality Management System) audit / registration
Nakata Engineering Products
Nakata Engineering designs and fabricates a wide range of machinery and line equipment for the rubber manufacturing industry.
Individual Machines
* Cold Feed Type Extruders
* Pin Type Extruders
* Duplex, Triplex, Quadruplex & Quintuplex Extruders
* Heads for Extruders
* Roller-Die Units
* Roller-Head Units
* Bale Cutters (Horizontal & Vertical Types)
* Mills (Vibro-mounted, single & twin type)
* Mill Blenders ( automatic mixing device)
* Calender Machines (2, 3 & 4 roll)
* Bias Cutters (vertical & horizontal type; auxiliary equipment)
* Presses (multiple daylight, conveyor belt curing, v-belt curing, toggle-type tube curing,
flap, bladder, and special design presses)
* Universal Type Inner Tube Splicers (for bicycle, motorcycle, passenger, truck, bus,
and OTR sizes)
* Uniformity/Balance Measurement - Combined Machines
* Miscellaneous Tire Finishing Equipment
* Continuous Vulcanizer (microwave continuous vulcanization system, salt bath
continuous vulcanization system, & hot air vulcanizers)
* Tire Building Machines
Line Equipment
* Tread/Sidewall Extrusion Lines
* Tube Extrusion Line Equipment
* Bead Equipment
* Bias Cutter Equipment
* Topping Calender Lines
* Jointless Bandage Tape Production Lines
* Multi-Slitter Equipment
* Mill Room Equipment
Nakata Engineering Multiplex Extruders
Extruders for multi-structure profiles play an extremely important role in improving tire quality. A tire consists of a tread, sidewalls and bead section. The respective components are formed from a number of rubber compounds with properties required for specific aspects of tire performance. With multiplex extruders, the rubber profile components are extrusion molded as a single air-free, multi-layer/compound unit under high pressure.
Nakata makes cold feed extruders and pin type extruders up to 250 mm. These machines are arranged in piggy back type of 2, 3 and 4 layers.
Multi-layer extrusion heads have also been developed and adapted to these units. These have also been incorporated into production lines with good results.
DUPLEX EXTRUDER
TYPICAL APPLICATIONS
TRIPLEX EXTRUDER
TYPICAL APPLICATIONS
QUADRUPLEX EXTRUDER
TYPICAL APPLICATIONS
QUINTUPLEX EXTRUDER
Nakata Engineering recently developed a quintuplex extruder in a state-of-the-art unit for extruding tread sections using five different compounds.
A split head clamping system provides separate opening and closing of the top and bottom heads, minimizing cleaning and wastage when changing compound types. In the future, this feature will be available on all Nakata multiplex extruders.
The first Nakata quintuplex extruder will primarily be used for a Silica compound tread extrusion with one compound being electro-conductive.
SPECIAL PURPOSE EXTRUDERS
While the need for large, multiplex extruders for high production applications continues to grow, smaller, special purpose extruders are also in great demand.
Nakata Engineering will develop small, multiplex extruders to meet a customer's specific requirements.
Nakata Engineering Extruder Interface Technology
Nakata Engineering has vast experience not only with extruders themselves, but also with interfacing the extruder with other Nakata equipment to produce integrated lines, such as:
* Twin Screw Roller Head Extruders (Under Banbury)
* Roller Head Extruders
* Sleeve Exchange Roller Head Extruders
* Mini Roller Head Extruders
* Bead Manufacturing Lines
* Bead Filler and Flippering Machines
* Jointless Bandage Tape Production Systems
* Tread Skivers
* Tread Auto Booking Systems
Nakata Engineering Extruders
COLD FEED TYPE EXTRUDERS
Cold feed type extruders are constructed with specially designed screws best suited for cold feeding. The primary components of each machine are an extruder unit, a temperature control unit, a drive motor, and a temperature control panel.
FEATURES & BENEFITS
*
Ordinary temperature rubber in the form of tapes, pellets or slabs can be fed directly to the extruder, with no preheating in warmingmills before the extruder.
*
A range of screws is available for a wide variety of compound and.extrusion applications.
*
During the extrusion process, uniform
temperature and plasticity is applied to the
.rubber compound to provide greater in the shape and size of extruded components.
*
Rubber feed to the extruder can be automatic, reducing the number of operating personnel.
*
An automatic temperature control unit with a circulating pump controls.barrel temperature to within ±1ºC, so the shape and size of the extruded products are uniform.
VENT TYPE EXTRUDERS
Single screw vent type extruders have screws of an original and unique design. The primary components of each machine are an extruder unit, a temperature control unit, a temperature control panel, and vacuum pump. Compound can be cold fed to the feed section.
FEATURES & BENEFITS
* A single, specialty geometry screw and vacuum pump completely vent bubbles out .of extruded components.
* Screw can be replaced quickly when .necessary.
* The machine is easy to inspect and maintain.
* An automatic temperature control unit, with a .circulating pump, controls barrel temperature to within ±1ºC, so the shape and size of the extruded products are uniform.
* Requires a small floor area.
PIN TYPE EXTRUDERS
The pin type extruder incorporates a special design with 60 to 100 pins protruding from the cylinder wall toward the screw's center. These pins enhance the mixing and dispersing of the rubber as it is kneaded between the screw and the cylinder, making the pin type extruder extremely flexible as a universal extruder that is applicable to many rubber compound formulations for diverse applications.
FEATURES & BENEFITS
* Pins enhance mixing to provide high uniformity in dispersion and plasticization of material.
* Applicable to a wide range of rubber compounds.
* Output is 20% to 60% higher than a conventional cold feed type extruder of the same size.
* Rubber can be extruded at relatively low temperatures.
* The low energy consumption (WH/KG) helps keep costs down while.conserving resources.
* System is self-cleaning.
© Copyright 2000 Nakata Engineering Co., Ltd. All Rights Reserved.
