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Rubber extruder

Vertical Silicone Rubber Vulcanization Line

In recent years, silicone rubber material have been evaluated for their properties such as odorlessness, heat resistance, cold resistance, and flexibility, which are unlikely to cause chemical reactions with other substances other than those used for conventional industrial products. It is used in products in various fields such as electronic components, food, and medical.

Mitsuba Mfg Co. Ltd. has a silicone rubber vulcanization line that can continuously produce tubes and profile products used in these fields from extrusion to vulcanization according to the size and shape of the product.

We have two types of manufacturing equipment: a horizontal silicone rubber vulcanization line (horizontal extrusion) and vertical silicone rubber vulcanization line (upward extrusion).

This page introduces the vertical silicone rubber vulcanization line.

Click here for the horizontal silicone rubber vulcanization line.

PE2107192_1_240_173.jpg








        Vertical silicone rubber vulcanization line

【Features】

①As the work extruded upward is vulcanized without contact.

 There are no marks on the belt or guide roll.

②Since vulcanization is performed with the shape extruded from the head, crushing and deformation due to the product's own weight

    are minimized.

【Suitable product】

①Thin-walled products that may be crushed or deformed due to their own weight.

② Deformed product with uneven 凹凸on the work surface.

③ Tube with strict roundness.

Horizontal Silicone Rubber Vulcanization Line

In recent years, silicone rubber material have been evaluated for their properties such as odorlessness, heat resistance, cold resistance, and flexibility, which are unlikely to cause chemical reactions with other substances other than those used for conventional industrial products. It is used in products in various fields such as electronic components, food, and medical.

Mitsuba Mfg Co. Ltd. has a silicone rubber vulcanization line that can continuously produce tubes and profile products used in these fields from extrusion to vulcanization according to the size and shape of the product.

We have two types of manufacturing equipment: a horizontal silicone rubber vulcanization line (horizontal extrusion) and vertical silicone rubber vulcanization line (upward extrusion).

This page introduces the horizontal silicone rubber vulcanization line.

Click here for the vertical silicone rubber vulcanization line.

PE2107191_1_240_154.jpg







        Horizontal silicone rubber vulcanization line

【Features】

①It is possible to produce with the line speed increased.(Note: Depends on vulcanization conditions and installation space)

②Since the height of the equipment is low, if it is the height of a general factory, it can be installed without renovation of the

    building.

③Since you can work on the floor, maintenance and work can be done easily.

【Suitable product】

①Tubes and hoses with light product weight.

②Tape-shaped or mouth-shaped profile products with few uneven凹凸surfaces (especially the lower surface side).

Silicone Rubber Extruder
  • new

Dedicated extruder aimed at improving the quality and workability of silicone rubber products!!!

In recent years, silicone rubber materials have been used in various fields of such as electronic parts, electric vehicles, food, and medical care other than those used in conventional industrial products, due to the evaluated properties such as odorlessness, heat resistance, cold resistance, and flexibility, which are unlikely to cause chemical reactions with other substances.

Mitsuha's silicone rubber extruder is designed and manufactured as a dedicated machine with various ingenuity in order to maintain the quality and to cope with the properties peculiar to silicone rubber materials in these fields where demands are strict. 

Gear pump for rubber
  • new

Due to recent demands for quality, accuracy and yield improvement, gear pumps are becoming indispensable in the field of rubber product manufacturing such as supply to calender rolls, heating, profile extrusion, tube/hose extrusion, and pre-forming.

Mitsuba was one of the first to recognize the need for gear pumps, and has been selling rubber gear pumps originally developed since 2007.

We have a lineup of 18 models from low discharge to large discharge so that they can be used for various purposes.

In addition, based on our many years of sales performance, we are also working on improving cleaning and maintenance with reference to customer needs.

Rubber Extruder with Gear Pump
  • new

Low temperature, high discharge, high precision extrusion system

Since the rubber extruder performs the functions of transporting, heating, kneading, and weighing with screws, it was inevitable that the rubber temperature would rise due to pressure rising in the measuring section.

A rubber extruder with a gear pump is an optimal combination that takes advantage of both the weighing function of a gear pump that does not require pressure rising and the extruder's features of transfer, heat heating, and kneading.

Taking advantage of this feature, it is effective in various fields such as supply to calender, heating, profile extrusion, tube / hose extrusion, pre-forming where demands for quality improvement such as appearance, accuracy, and foreign matter removal are becoming stricter.

Cylinder Mobile Typed Extruder

The structure is such that the cylinder and gear box are separated.

Without removing the screw, cleaning can be performed so that the cleaning time can be greatly reduced when changing materials.

In Mitsuba Ueda factory, it is always available as a test machine, so you could visit to see it at any time with making a reservation.

Rubber Plastic Composite Hose Line

This equipment is a line that produces hoses that combine synthetic rubber and fluororesin.

Taking advantage of our strength of being able to manufacture both rubber extruders and plastic extruders, we have various line-ups such as a line with a mandrel like this equipment and a line that extrudes rubber and plastic at the same time.

Our fluororesin extruder uses an extruder's material with excellent corrosion resistance.

Roller head

Roller headlines are used for the continuous production of bubble-free sheets of raw rubber and synthetic rubber with a thickness of 0.5 mm to 20 mm.

A uniformly plasticized rubber compound is extruded from the extruder onto two calender rolls. The flow path inside the extrusion head is designed so that the rubber flows evenly. The calender roll works to shape the rubber extruded from the seat head and calibrate it to the required seat thickness.

By adjusting the outlet width dimension of the sheet ejection head, the edge trim amount with respect to the specified product dimension can be minimized.

Rubber Sheet Production Line

A rubber sheet extrusion line that combines a roller head and a calendar roll.

<Product Feature>

・Extruded material: EPDM, NBR, FKM

・Width 300mm x Thickness 2mm ~ 10mm

・Line speed 1.0 ~ 7.5m / min

The uniformly plasticized rubber compound is extruded from the rubber extruder onto two calendar rolls from the roller head, and the calendar rolls mold the rubber and calibrate the sheet thickness set.

The rubber extruder of this equipment adopts a structure in which the gear box and cylinder are divided into two parts, so that the setup change time during work could be significantly reduced.

Even in the flow path inside the head, the flow analysis of the material is performed based on the accumulated viscosity data of our company's capillary rheometer.

So the rubber is designed to flow uniformly.

Strainer With Large Gear Pump

In the rubber manufacturing process, the demand for quality (appearance, accuracy, sponge condition, etc.) has become more and more stringent, and the importance of straining is being reassessed. A strainer with a gear pump developed by Mitsuba enables low-temperature rubber straining. Large gear pump model: MGPR-200 /130 realizes a large amount of processing.
 * Maximum processing capacity: 2000 kg/h (varies depending on the rubber type and hardness of rubber)

Multi-Layer Extruder

By performing multi-layer extrusion, it is possible to prevent air from entering and the installation space becomes compact.

We have many achievements in body seals (metal inserts) for automobiles.

Quality can be improved by using a pin extruder for high-viscosity solid materials.

Pin type rubber extruder

Concerning the pin type extruder, dozens of pins are projected from the cylinder toward the center of the screw, and the flight part of the screw is grooved in the circumferential direction so as to avoid interference with the pins which allow the pins to pass through.
By means of attaching pins, many effects can be obtained.

      The pin immediately after the feed zone increases the coefficient of friction between the cylinder liner and the cold rubber compound, changing the ratio of the axial and circumferential flow of the rubber. This increases the carrying capacity of the screw.
      At the center of the pin cylinder where the rubber compound is heated, the rubber flow is divided by the pins, and when it passes through the pins, it come together again and flows at a relatively low shear rate.

Spiral Machines
  • new

Used for the manufacture of hoses that require strength and durability, our spiral machines are designed to accommodate the use of mandrels.

For non-mandrel type spiral hose manufacturing lines, we offer inline type spiral machines that meet the most demanding requirements in terms of high speed and large-scale bobbins (spools).

We also have braiding machines that extrude hoses in the tube + braid + cover formation without the use of mandrels.