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Conductive Carbon Paste Defoaming Machine


Eliminate Bubbles & Improve Dispersion for Conductive Carbon Paste · Uniform Carbon Film & Consistent Resistance

Vacuum Defoaming + Break Up Carbon Black / Graphite Agglomerates + Stable Resistance Across Batches

SIENOX conductive carbon paste defoaming solution addresses agglomeration and air entrapment issues of carbon paste containing graphite and carbon black. It realizes stirring, defoaming and dispersion simultaneously under vacuum to deliver uniformly printed carbon films with consistent resistance and reduce pinholes and resistance drift.

✓ CE certification  ✓ ISO9001 Quality System ✓ RoHS Compliance ✓ Custom voltage available (110V/220V)

Online Message Free Sample Testing Engineer Hotline: 189-2512-9293

Why Do We Need Conductive Carbon Paste Defoaming Machine

Membrane Switches & Buttons

Carbon paste is printed to form conductive contacts for membrane switches and buttons. Air bubbles and agglomerates create pinholes and uneven thickness in carbon films, resulting in contact resistance drift and button failure.

Carbon Film Resistors

Printing for carbon film resistors and heating sheets requires stable resistance values. Agglomeration and bubbles cause resistance dispersion and poor batch consistency.

EMI Shielding

EMI shielding carbon paste demands continuous and dense coatings. Bubbles and pinholes break the continuity of shielding layers and weaken shielding performance.

✨ Traditional Dilemma: Carbon black features large specific surface area and tends to agglomerate severely. Manual stirring brings air entrapment and agglomerates, leading to unstable resistance of carbon films. Vacuum defoaming with strong dispersion is required

Why Choose SIENOX Carbon Paste Defoaming Solution

Break Carbon Black Agglomerates

Rotational shear breaks up agglomerates of carbon black and graphite for continuous and uniform carbon films with consistent resistance.

Vacuum Defoaming

Trapped air generated during stirring is removed synchronously to reduce pinholes in carbon films and deliver more reliable shielding and conductivity.

Reproducible Batches

100 groups of formula storage ensures stable carbon film resistance across batches. Smooth process scale-up from lab samples to mass production.

✨

Equipment Supporting Description

Supporting Process Workflow 

Weigh resin and powder → Vacuum stirring, mixing and degassing → Discharge for compaction / casting → Curing / sintering.

Stirring and Defoaming Working Principle 03.jpg

Specifications & Parameters

Selection Guide

Carbon Paste ApplicationTypical StateRecommended Defoaming MethodRecommended Equipment
Formula R&D / SamplingSmall amount of carbon pasteCentrifugal / Vacuum Defoaming & DispersionC Series / ZK Series
Carbon Paste for Membrane SwitchHigh-viscosity pasteVacuum Stirring, Defoaming & DispersionMIX60 / MIX80
Carbon Film Resistor / Heating SheetMedium to High ViscosityVacuum Stirring, Defoaming & DispersionMIX Series / MIX1000plus
Mass Shielding CoatingMedium ViscosityVacuum Stirring & DefoamingMIX1000plus

Our Partners

Trusted by leading industrial manufacturing clusters and advanced university laboratories worldwide

Partner Showcase

FAQ - Frequently Asked Questions

Answers to common questions about product performance and everyday process selection

  • What is the working principle of a centrifugal defoaming machine?

    Principle of centrifugal defoaming machine: The bubbles are released by the downward principle of gravity.

  • How is the after-sales service?

    The company has professional after-sales service personnel, 24-hour dedicated service, and one-on-one technical support to solve your worries.

  • Why choose SIENOX?

    There are many reasons for choosing SIENOX, and the following are some of the main reasons:

    1. Professionalism: Our team consists of a group of professional individuals with rich experience and knowledge in their respective fields. We not only understand industry trends and best practices, but also provide practical and feasible solutions.

    2. Service quality: We focus on customer needs and satisfaction, and are always committed to providing high-quality services. We not only respond quickly to customer needs, but also provide customized services according to their requirements.

    3. Reliability: We adhere to the principles of integrity and professionalism, always adhering to commitments and agreements. Our work methods and deliverables comply with industry standards and best practices, enabling our clients to trust us.

    4. Innovation: We continuously explore new methods and tools to provide better services and meet customer needs. We encourage innovation and experimentation, and are willing to accept challenges and change.

    5. Cost effectiveness: We provide cost-effective services that not only help customers save costs, but also improve efficiency and productivity. We always prioritize the interests of our customers and provide them with the best solutions.

    6. Teamwork: We believe in the power and value of teamwork, and our team members support, collaborate, and respect each other. We establish close cooperative relationships with customers, partners, and other stakeholders to achieve common goals.

    The above are just some of the reasons for choosing us. We believe there are many other advantages and values that can be provided to customers. If you are looking for a professional, reliable, and high-quality service provider, we look forward to working with you.


  • How does the stirring and defoaming machine work?

    The SIENOX stirring and defoaming machine performs defoaming through centrifugal force at revolution and stirring through shear force formed by revolution and rotation,

    Assisted by a vacuum pump to extract gas and achieve a vacuum state, removing nanoscale tiny bubbles. No contact with materials, no secondary pollution, and no secondary waste.

  • What is the function of a defoaming machine?

    A defoaming machine is a device used to remove bubbles from liquids. Its function is to assist in the liquid mixing, reaction, coating, printing, infusion and other process steps in the production process, avoiding the generation of bubbles and their impact on the final product. In many industrial and laboratory environments, removing bubbles is essential as they may have a negative impact on product quality, such as affecting surface tension and stability. Defoaming machines typically use various techniques such as vibration, ultrasound, centrifugation, etc. to achieve effective bubble removal. It has a wide range of applications, including but not limited to semiconductors, solar energy, optics, biotechnology, materials science, etc.

Technical Specification List

Full‑line standardized specifications for accurate process evaluation and equipment selection

Carbon Paste ApplicationTypical StateRecommended Defoaming MethodRecommended Equipment
Formula R&D / SamplingSmall amount of carbon pasteCentrifugal / Vacuum Defoaming & DispersionC Series / ZK Series
Carbon Paste for Membrane SwitchHigh-viscosity pasteVacuum Stirring, Defoaming & DispersionMIX60 / MIX80
Carbon Film Resistor / Heating SheetMedium to High ViscosityVacuum Stirring, Defoaming & DispersionMIX Series / MIX1000plus
Mass Shielding CoatingMedium ViscosityVacuum Stirring & DefoamingMIX1000plus

Multi‑Industry Solutions

Covering stirring and debubbling applications of typical materials across six major industries

Membrane Switch.jpg

Membrane Switch

Key contacts & conductive carbon film

Carbon Film Resistor.jpg

Carbon Film Resistor

Resistor component & carbon film printing

Heating Sheet.jpg

Heating Sheet

Flexible heating sheet & electrothermal film

EMI Shielding.jpg

EMI Shielding

Electromagnetic shielding coating & grounding

Carbon Paste Manufacturer.jpg

Carbon Paste Production

R&D and filling of conductive carbon paste

Thick Film Circuit.jpg

Thick Film Circuit

Carbon thick film circuit & leads

Comprehensive Equipment Operation Demo Videos


Measured Defoaming‑Process Performance

Measured Processing Results for Six Typical Materials

Lubricant Stirring & Defoaming.jpg

Paste Materials

Photoresist Stirring & Defoaming.jpg

Adhesive with Powder

Polymer Materials.jpg

Polymer Materials

Gel Defoaming 02.jpg

Pharmaceutical Gel

Silver Paste Powder Stirring & Defoaming.jpg

Silver Paste Materials

Battery Slurry & Adhesive Stirring & Defoaming.jpg

Battery Slurry

Precautions for Use

NotesOperation Instructions
Dispersion TimeCarbon black has a large specific surface area. Control vacuum stirring duration and shear strength to balance dispersion and defoaming.
Loading & Rotation SpeedMatch loading volume and rotation speed for high-viscosity carbon paste to prevent carbon black sedimentation and re-agglomeration.
Slow Pressure ReliefRelease pressure slowly after defoaming to avoid re-foaming and splashing of paste.
Prompt PrintingPrint promptly after defoaming and dispersion to prevent re-agglomeration of carbon black upon standing.

* Internal laboratory test data. Actual results vary with paste formulation and printing process. Contact sales for real customer cases.

Customer Delivery & Application Cases

Rooted in manufacturing frontlines, empowering benchmark production lines and key national research institutions across diverse industries.


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