株式会社三葉製作所

Strengths of MITSUBAREASON

7reasons why customers choose MITSUBA!!

Quality

The steel materials and electrical components we use are basically selected from reliable Japanese manufacturers, and we only use those that have passed the acceptance inspection based on the mill sheets and inspection reports from our suppliers.
Not only in-house processes, but also subcontractors comply with ISO9001 and use uncompromisingly inspected parts.
We provide high-quality products using only these inspection-passing parts.

Coordinate Measuring Machine
Screw Inspection

Extruder

We are one of the few manufacturers in the world that manufactures extruders for resin and rubber.
In recent years, the materials used by customers are increasing in non-general-purpose materials due to the improvement of required product functions.
We provide optimal extruders that meet customer needs through screw design, pressure resistance, and flow path design that utilizes the know-how we have accumulated from many years of experience working on extruders for resins and rubbers.
We are also focusing on the development of next-generation extruders such as high-discharge resin extruders and supercritical foaming extruders that are capable of micro-foaming, which have become mainstream in the world.

Three-layer fluoropolymer tubing line
high-discharge resin extruder
Three-layer rubber extruder

System construction

We also design and produce ancillary equipment other than extruders, and we propose machines that meet customer needs from a large number of product groups as a line.
In addition, we also design hardware and software in-house, and by working together with machines from the design stage, we can flexibly respond to requests such as automation, safety, recipe management, and IoT. We propose various production equipment as a system.

Wire Coating Line

All line equipment is designed, machined, and assembled in-house.

Operation screen

We also handle electrical design in-house, from circuit design of interlocks, etc., to program design of tension control/strip length control/recipes, etc.

3D Outline Drawings

3D Cad created outline drawings of equipment, It is popular among customers for its ease of checking for interference at the design stage and for providing an image of the finished product and the completion image is easy to obtain.

In-house production

In addition to design and assembly, we process major parts such as screws and heads in-house.
In order to respond to short delivery times, we regularly introduce state-of-the-art machine tools with high productivity and processing accuracy, and promote in-house production of important parts.

Screw Cutting Machine
ertical grinding machine

Delivery management

With the new production management system introduced in 2021, we constantly monitor the progress of each process and manage the entire flow from contract to delivery.

Introduction of global technology

For equipment that we do not have in-house, we have introduced equipment from European partner companies such as KraussMaffei, Corelco, and CJTEK, and provide world-class lines that combine our own equipment.

Co-directional twin-screw

extruder Application example of a KraussMaffei twin-screw extruder combined with a Mitsuba control system

Corrugated tubing line

Application example of Corelco made corrugator combined with a Mitsuba made extruder

Triple-insulated cable line

Application example of CJTEK’s three-layer alignment-free crosshead combined with equipment and devices such as Mitsuba’s extruder

Business continuity

In the extrusion equipment industry, which is called a saturated industry, we hire new employees every year and introduce the latest processing machines and systems that match the times for corporate development.
As a manufacturer that handles equipment with a long lifespan, we will continue to develop new products that meet a variety of needs while providing reliable products that can be handed down to the next generation through after-sales services such as parts supply and maintenance. We will continue to strive to play a role as a partner company that can develop together with our customers.