MLCC Manufacturing Equipment

What is MLCC?

MLCC is the abbreviation for multi-layered ceramic capacitors. These chip-type capacitors are designed to be small and large-capacity thanks to multi-layered (laminated) ceramic dielectrics and metal electrodes. The compact, heat-resistant design makes MLCCs ideal for high-frequency circuits, with frequent adoption in computers, communication equipment, video equipment, automobiles and most other digital equipment.
In recent years, electronics have become more prominent in automobiles, smartphones have continued to become more sophisticated, and IoT (Internet of Things) has become increasingly popular. This has brought a rapid increase in demand for MLCCs, which have proven to be highly versatile electronic products.

Koyo Thermo Systems MLCC Production Heat Treatment Equipment

As a manufacturer of MLCC production heat treatment equipment, Koyo Thermo Systems strives to solve various customer problems by using advanced technology and high-reliability manufacturing supported by an extensive delivery history. Although the company is able to provide a wide variety of equipment as a general manufacturer of heat treatment equipment, this page introduces only two representative Koyo Thermo Systems products.

Processing Applications

Koyo Thermo Systems MLCC production heat treatment equipment is generally used for ceramic dielectric debinding and electrode firing, but equipment can also be designed to meet various customer-specific requests, including intermediate processing applications.

Features and Strengths

Manufactured according to the varied individual experiences of the manufacturer, MLCCs do not have a designated “standard” when it comes to manufacturing. In addition to its heat treatment equipment platform of simple, inert gas ovens and continuous mesh belt-type furnaces, Koyo Thermo Systems regularly provides one-of-a-kind customer-specific equipment. Koyo Thermo Systems supports high-quality MLCC manufacturing through advanced atmosphere control and heating control technology developed through years of experience.

Products

Mesh Belt Type Continuous Furnace47-MT series

With a mesh belt construction and the adoption of a muffle, these furnaces offer excellent atmosphere stability and reproducibility. This makes them ideal for MLCC debinding and electrode firing.

Since delivering the first furnace for the Japanese electronics industry in 1980, Koyo Thermo Systems has shipped over 4,000 mesh belt type continuous furnaces for manufacturing electronic components. The adoption of a metal muffle offers excellent temperature uniformity within the furnace. In addition, the created furnace atmosphere offers excellent air-tightness as well as improved stability and reproducibility. Adopting Moldatherm heaters featuring Koyo Thermo Systems’ heat insulation technology and advanced temperature variation characteristics ensures high-precision temperature control as well as excellent energy savings. This makes these products ideal for heat treatment lines in MLCC manufacturing.
An optional lineup of units for processing the organic exhaust gases generated during debinding is also available, ensuring a wide selection of processing equipment suitable for any application.

Multi-inlet/exhaust type

With a muffle structure featuring multiple inlets and exhausts according to the work being processed, these models allow for fine-tuned atmospheric adjustment.
Products can be designed according to customer requests, such as with MLCC copper electrode baking requiring highly efficient debinding, or processing requiring atmospheric changes at each step.

Processing application examples

Applications

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Industrial field Purpose of heat treatment Heat-treated product
Electronic components ・Drying
・Curing
・Debinding
・Electrode Baking
・Reoxidation
・Calcinating
・Firing
・Annealing
・Sintering
・Soldering
・Silver Brazing
・Reactor
・MLCC (Multi-Layer Ceramic Capacitor)
・Multilayer Inductor
・LTCC (Low Temperature Co-fired Ceramics)
・Hermetic Terminal
・Ferrite Core
・Piezoelectric Element
・Ceramic Package
Others ・Drying
・Curing
・Debinding
・Annealing
・Electrode Baking
・Overcoating
・Photovoltaic
・Bonded Magnet
・Sintered Magnet
・Metallic Material

Specifications

Max. operating temperature 1000℃
Transport method Mesh belt conveyance
Heating chamber Heat-resistant steel muffle
Belt width (mm) 150 to 800
Supported atmospheres N2, N2 (wet), N2 + air, Air
Options Belt cleaner, detachable air inlet/exhaust unit, exhaust gas treatment unit, workpiece conveyor
* Various other options are also available. Click here to contact Koyo Thermo Systems.

Organic exhaust gas treatment units

Inert Gas OvenINH Series

Max. operating temperature
600℃

This high-performance inert gas oven is capable of heat treatment at temperatures of up to 600°C in atmospheres with an oxygen concentration as low as 20 ppm. This makes the series ideal for MLCC debinding.

Koyo Thermo Systems developed its inert gas ovens and clean ovens following development of basic technologies cultivated from atmospheric oven production. The company has now delivered over 4,000 ovens. Featuring a proprietary chamber structure and sealing technology, these inert gas ovens provide excellent air-tightness and temperature uniformity while also ensuring improved stability and reproducibility. In addition, the adoption of an external cooling mechanism powered by a cooling blower makes it possible to perform rapid cooling without affecting the furnace atmosphere, allowing for shortened processing times.
An optional lineup is also available—including organic exhaust gas treatment units and increased-safety specifications required for equipment dedicated to debinding—to ensure safe and secure MLCC production.

Applications

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Industrial field Purpose of heat treatment Heat-treated product
Electronic components ・Debinding
・Annealing
・Curing
・Ceramic materials/sheets
・MLCC (Multi-Layer Ceramic Capacitor)
・LTCC (Low Temperature Co-fired Ceramics)
・Ceramic O2 sensor
・Ferrite Core
・FPC (Flexible printed circuits)
・Common-mode noise filter
・Thermistor
Others ・Debinding
・Curing
・Annealing
・Firing
・Drying
・Silicon carbide ceramics
・Electrostatic chucks
・Aluminum nitride
・Optical lens
・Flexible substrate
・Rechargeable battery electrode material
・Wire Harness(Copper wire)
・catalyst
・Forged products

Specifications

Method Forced air circulation (side flow)
Max. operating temperature 600℃
Regular operating temperature range RT + 60 to 600°C
Supported atmospheres N2, Air
Internal dimensions (mm) 600W × 600H × 600D (INH-21CD) to 1000W × 1000H × 1000D (INH-100CD)
Cooling mechanism Forced cooling mechanism with exterior tank
Options Oxygen analyzer, exhaust gas treatment unit, increased-safety specifications, workpiece loading lifter
* Various other options are also available. Click here to contact Koyo Thermo Systems.

Custom examples

A note on safety

In situations where binders and organic components are generated during product processing, ensure safety by performing treatment that considers the heating rate, amount of gas introduced, and other factors based on the differential thermogravimetric curve and other characteristics of the generated component.

Exhaust Gas Treatment Equipment

This equipment uses a high-temperature direct combustion method to accurately purify the organic vapor generated from the product being treated. This makes the series ideal for the exhaust gas treatment of heat treatment equipment that performs debinding.

Vapor containing organic compounds is generated from the object being treated during the temporary sintering process of ceramics and the degreasing process of electronic components. This gas, which diffuses in the furnace atmosphere, is discharged from the heat treatment equipment as exhaust gas. However, this gas has a powerfully irritating odor and is combustible, so it may lead to a poor work environment and pose fire and explosion hazards. The countermeasure against these issues is to purify the gas, but how to do so is the challenge.

Koyo Thermo Systems has released the GM Series, which uses a direct combustion method to accurately purify the exhaust gas, thereby improving both the work environment and its safety. Currently, over 700 GM Series units are in operation on production lines around the world.

The direct combustion method has a structure that is simpler than that of the catalytic combustion method and has high tolerability for tar and dust, which enables its use in the exhaust gas treatment of a wide range of objects being treated.

The GM Series adds fresh air to the exhaust gas and accurately performs direct combustion decomposition of the organic matter within the muffle heated to a temperate at or above the ignition point (up to 850°C). An electric resistance heater (a Moldatherm heater made by Koyo Thermo Systems) is used for the heat source, so there is no need to install fuel gas and other such utilities that were required for the gas burner method, which burns the target with an open flame. This reduces the cost at the time of equipment installation. Highly reliable Moldatherm heaters enable stable exhaust gas treatment with their excellent energy saving performance and temperature control.

We recommend that this equipment be used as a set with an inert gas oven, a degreasing furnace, or a mesh belt type continuous furnace. Combining this equipment with Koyo Thermo Systems heat treatment equipment enables linked operation and interlocking, which ensures more efficient and safer operation.

  • Internal structure

  • Usage example (linked with an inert gas oven)

Specifications

Exhaust gas treatment method Direct combustion by way of heating provided with an electric heater
Max. operating temperature 850°C
Heating chamber Heat-resistant steel muffle
Air to aid combustion Compressed dry air
Treated gas amount 400 L/min (GM-30C) to
800 L/min (GM-50C)
* Including the air to aid combustion

All Fit Series

To provide heat treatment technology that meets the needs of all customers, Koyo Thermo System has developed a manufacturing equipment series that utilizes a superheated steam atmosphere.

These heat treatment devices are available as batch or continuous types. Koyo Thermo System also offers a lineup of products for experimental development R&D, small-volume production, and mass production.

Superheated steam

Superheated steam is colorless, transparent, high-temperature steam gas (H2O) generated by heating saturated steam evaporated at 100°C to an even higher temperature under normal pressure.

Main features

  • Higher specific heat than heated air and better radiation effects for uniform heating in less time
  • Low-oxygen processing capabilities
  • Improved productivity and reduced running costs through accelerated hydrolytic reactions of processed products

Processing applications

  • De-binding and baking of electronic components
  • Degreasing of ceramic parts
  • Drying and degreasing of metal parts
  • Removal of resin
  • Heat treatment of products for which heating efficiency cannot be improved through conventional methods

* The effectiveness varies depending on the material being treated. We recommend testing with our demo unit first to verify effectiveness.

Example application results

  • Half the required heat-up time in de-binding of electronic components
  • Lower processing temperatures

Batch-Type

AllFit® Inert Gas Oven INH Series

Specifications

Model AF-INH21 AF-INH100
Max. temperature 600℃
Normal temperature RT + 60 to 600°C
External dimensions (mm) 1485 (W) × 1700 (H) × 2090 (D) 1850 (W) × 2425 (H) × 2593 (D)
Test area dimensions (mm) 600 (W) × 600 (H) × 600 (D) 1000 (W) × 1000 (H) × 1000 (D)
Treatment atmosphere Superheated steam, N2, Air
Residual oxygen concentration 20 ppm or less (when superheated steam is introduced; reference value)

Note: May vary depending on the amount of dissolved oxygen in the supplied water.

* Additional safety features included (relief door and reinforced door)

Batch-Type High-Temperature

AllFit® µBF Vacuum Purge Type Small Box Furnace

Specifications

Model AF-µBF
Max. temperature (*1) 1000℃
Normal temperature (*1) 400 to 900°C
Effective internal muffle dimensions 200 (W) × 200 (H) × 400 (D)
Treatment atmosphere Superheated steam, N2, Air, H2
Residual oxygen concentration 20 ppm or less (when superheated steam is introduced; reference value)

Note: May vary depending on the amount of dissolved oxygen in the supplied water.

*1 Values are for temperatures measured inside the heating chamber and outside the muffle.

Continuous-Type

AllFit® Compact Conveyor Furnace

Specifications

Model AF-810A
Max. temperature 1000℃
Normal temperature 250 to 900°C
Treatment atmosphere Superheated steam, N2, Air
Belt width (mm) 200
In-furnace passing height (mm) 30
Zone configuration Inlet/outlet purge chamber, 7 heating zones (1704 mm), cooling chamber (450 mm)
Residual oxygen concentration 20 ppm or less (when superheated steam is introduced; reference value)

Note: May vary depending on the amount of dissolved oxygen in the supplied water.

Demonstration and test areas

Comprehensive manufacturer of heat treatment equipment, which solves heat treatment problems from different fields beyond the boundaries of fields and areas

From equipment for research and development to production facilities, by assembling technicians in major business areas for vitalization of new products and technology development, and by installing our demonstration equipment for experiments and evaluations, Koyo Thermo Systems is not only developing processes of its own but also providing the system that can be used for customers’ pre-tests and for performance evaluation.

Continuous furnace area for electronic component manufacturing

Compact electric furnace & oven area

About Koyo Thermo Systems

The metallic components, ceramics, etc. of formed and fabricated materials that form the foundation of the industry; the semiconductors and electronic components that support the latest technologies; the displays that enrich people's lives and next-generation batteries that control global environment pollution; and experimental developments to create all of these industries—it is not an overstatement to say that the heat treatment equipment created by Koyo Thermo Systems is involved in all of the industries in our lives. With the unique technology created by the "Technology Tree" that fused the five pieces of "Technology Leaves" that were cultivated with a history spanning half a century, we continue to contribute to every field in the world.

International Offices

HEAD OFFICE

1. JAPAN (Tenri)

KOYO THERMO SYSTEMS CO., LTD.

  • 2. KOREA (Kyeonggi-do)

    KOYO THERMO SYSTEMS KOREA CO., LTD.

  • 3. CHINA (Shanghai)

    KOYO THERMO SYSTEMS TRADING (SHANGHAI) CO.,LTD.

  • 4. TAIWAN (Taipei)

    KOYO THERMO SYSTEMS ASIA CO., LTD.

  • 5. TAIWAN (Taichung)

    KOYO THERMO SYSTEMS ASIA TECHNICAL SERVICE OFFICE IN TAICHUNG

  • 6. THAILAND (Bangkok)

    KOYO THERMO SYSTEMS (THAILAND) CO., LTD.
    KOYO THERMO SYSTEMS CS(THAILAND)CO., LTD.

  • 7. U.S.A.

    SANDVIK THERMAL PROCESS, INC.

  • 8. GERMANY

    CRYSTEC TECHNOLOGY TRADING GmbH

International Offices

Please click here for inquiries.