Waterproof sealing of substrates: Differences between traditional methods and hot melt molding methods.
"Complete sealing of electrical components in just a few dozen seconds. Ideal for waterproofing, dustproofing, and insulation!" Hot melt molding is gaining attention for the waterproof sealing of electrical components.
Numerous examples of achieving value analysis (VA) by replacing the two-component potting process with hot melt molding are published! This is a technical case study document summarizing these examples from a process perspective. ■ Currently, we are offering technical documents and various case studies for free! ■ 【Published Information】 ■ Differences between potting and hot melt molding ■ Process flow implementation - Potting process ■ Process flow implementation - Hot melt molding ■ Application 1: Waterproof sealing of LED fixtures ■ Application 2: Waterproof sealing of micro switches ■ Application 3: Waterproof sealing of temperature sensors
basic information
Hot melt molding is gaining popularity in automotive electrical components due to its excellent productivity and ability to contribute to miniaturization and lightweight design. Matsumoto Processing, after understanding the reliability requirements of our customers' products, provides optimal hot melt proposals, sealing shape modeling, analysis, mold manufacturing, and prototyping in a short period. For customers wishing to introduce hot melt sealing processes in-house, we offer comprehensive support including the manufacturing and sale of molding machines and molds, development of molding parameters, process startup assistance, and supply of hot melt materials. For customers who wish to outsource the hot melt sealing process, we provide contract molding services at our own factory.
Price range
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Model number/Brand name
Low Pressure Molding, Hot Melt Molding, Waterproof and Dustproof, Encapsulation Molding
Applications/Examples of results
- Automotive seat sensor - Automotive belt buckle sensor - Automotive power window switch - Automotive control board - Complete sealing of motor stator - Complete sealing of antenna coil etc.....
Detailed information
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Examples of waterproof sealing for agricultural machinery substrates. The left photo shows before sealing, and the right photo shows after sealing (the black part is the hot melt molding section).
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Example of waterproof sealing for motor stators. The amber-colored part covering the coil periphery on the circuit board in the photo is the hot melt molded section.
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Examples of encapsulation for industrial equipment circuit boards. The left photo shows before encapsulation, and the right photo shows after encapsulation (the black area is the hot melt molding section).
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News about this product（10）
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【Sample Giveaway】We are offering free samples of products that apply hot melt molding, a waterproof sealing method for electrical components that replaces potting, to LED substrates.
"Free Sample Presentation Campaign" This time, we are offering free samples of our LED-equipped boards that have been completely sealed using hot melt molding to customers who request them. Please feel free to take a look at the actual product. "What is Hot Melt Molding?" It is a groundbreaking sealing method that provides excellent waterproofing, dustproofing, and insulation by injecting thermoplastic adhesive around electronic components. Since it solidifies within seconds in the mold, sealing is completed in a shorter time compared to traditional two-component potting and BMC molding. Additionally, the hot melt we handle is primarily made from natural fatty acids derived from grains, making it highly sustainable. Customers who wish to receive a sample, please do not hesitate to contact us.
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We achieve cost reduction as an alternative to potting. We have summarized the waterproof sealing process using the notable electrical component sealing technology "hot melt molding" in a one-minute video. Please take a look.
"Complete sealing of electronic components in just a few dozen seconds. Ideal for waterproofing, dustproofing, and insulation!" Hot melt molding, which is gaining attention for waterproof sealing of electronic components. This technology achieves environmental protection such as waterproofing and dustproofing by low-pressure insert molding of thermoplastic adhesives on electronic components like mounted circuit boards. Compared to traditional two-component potting and conformal coating, sealing is completed in an extremely short time, leading to an expansion in its adoption as a sealing technology. We have succinctly summarized the sealing process in a one-minute video. You can watch it through the related links below. Please take a look!
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"Complete sealing of electrical components in just a few dozen seconds. Ideal for waterproofing, dustproofing, and insulation!" Hot melt molding, which is gaining attention for waterproof sealing of electrical components, introduces a hot melt with excellent optical properties that were not present in conventional products.
Complete sealing of electronic components in just a few dozen seconds. Ideal for waterproofing, dustproofing, and insulation! We have received numerous inquiries and requests regarding hot melt molding for waterproof sealing of LED lighting fixtures, electronic components, optical sensors, and more. However, conventional hot melts had a strong yellow tint and issues with light transmittance. The newly introduced hot melt has extremely high transparency and excellent UV resistance, making it suitable for applications such as lighting components and optical sensors. If you would like to see samples or need detailed information, please feel free to contact us.
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We have uploaded a video introduction page about the waterproof sealing method for electrical components, "Hot Melt Molding." Please take a look.
We will introduce the waterproof sealing method for electrical components, "Hot Melt Molding," in a video. - Video introduction of the sealing process using various molding machines - Comparison between Hot Melt Molding and Potting - Video introduction of case studies using Hot Melt Molding and more. Please take a look!
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Hot Melt Simple Molding System MK100 for Waterproofing Circuit Boards and Electrical Components - Matsumoto Processing
Today, we have released the latest model of our molding machine. ★ By minimizing functions, we have achieved a low price of 1.8 million yen. ★ The clamping stage can be easily installed on a tabletop. ★ It is ideal for sealing small items such as switches and sensors, as well as for prototyping. Despite the low price, it allows for: - Control of discharge speed - Control of discharge pressure - Control of discharge time and cooling time And it is equipped with a clamping mechanism (2.5 kN). Please feel free to download the materials.
