Waterproof sealing of electrical components: Hot melt molding
"Complete sealing of electronic components in just a few dozen seconds. Ideal for waterproofing, dustproofing, and insulation!" Hot melt molding is gaining attention for the waterproof sealing of electronic components.
Significant reduction in processing time and number of parts! Insert molding waterproof method that directly injects thermoplastic adhesive into electronic components! In recent years, adoption in automotive parts has been expanding. □ Adoption Examples Waterproofing and dustproofing of circuit boards, waterproof connectors, sensor harnesses, harnesses, switches, etc. □ Benefits of Adoption 1. Reduction in number of parts 2. Reduction in amount of resin used 3. Shortening of processing time ◆ If you would like a collection of case studies, please download the catalog.
basic information
●What is Hot Melt Molding? It is a technology that demonstrates excellent sealing performance by directly injecting hot melt adhesive into electronic components. □Advantages of Adoption 1. Reduction in Processing Time Hot melt molding completes one molding cycle in about 10 seconds to several tens of seconds. There is no need for curing time like in potting. 2. Reduction in Number of Parts Hot melt molding eliminates the need for a case. This allows for a reduction in the number of parts and production man-hours. 3. Miniaturization and Weight Reduction Hot melt molding can be shaped with minimal wall thickness along the insert components. This is expected to reduce the amount of resin used, leading to miniaturization and weight reduction. Matsumoto Processing will respond quickly to the selection of suitable hot melts, modeling of molding shapes, analysis, mold production, and prototyping after understanding the reliability required for your products. For customers wishing to introduce hot melt sealing processes in-house, we provide comprehensive support including the production and sale of molding machines and molds, development of molding parameters, process startup assistance, and supply of hot melts. For customers who wish to outsource the hot melt sealing process, we offer contract molding services.
Price range
Delivery Time
Model number/Brand name
Low Pressure Molding, Hot Melt Molding, Waterproof and Dustproof, Encapsulation Molding
Applications/Examples of results
【Automotive Interior Components】 - Waterproofing of seat occupancy detection sensor - Waterproofing of micro switch - Waterproofing of seat belt lock detection sensor - Waterproofing of harness assembly - Waterproofing of seat position sensor, etc. 【Other Automotive Components】 - Waterproofing of coil antenna - Waterproofing of camera harness - Waterproofing of ground terminal - EPS angle sensor - Waterproofing of battery current sensor, etc.
Detailed information
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LED module For waterproof protection of LED fixtures. Achieve cost reduction by switching from silicone potting!
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Waterproof protection for printed circuit boards. Achieve significant cost reduction by switching from epoxy potting. Additionally, it is a one-step process that takes only a few seconds, so no work-in-progress is needed!
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For small quantities, hot melt molding is low pressure, which means that the equipment and molds are also small and inexpensive (molds cost around 300,000 to 500,000 yen). If the production cost of resin cases is high for small-scale production, please consider hot melt molding.
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Intermediate harnesses for water-related equipment, etc. Achieve cost reduction through hot melt molding with case-less design, reduced resin usage, and shortened production time!
Related Videos
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News about this product（25）
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Introducing the waterproof, dustproof, and insulation protection technology for various electrical components called "hot melt molding." Sealing is completed in just a few dozen seconds, achieving process improvement and cost reduction.
The technology "Hot Melt Molding," which is expanding its adoption for waterproofing, dustproofing, and insulation protection of various electrical components, rapidly solidifies thermoplastic hot melt adhesives within molds, completing sealing in a short time of just a few dozen seconds. Compared to traditional urethane potting and epoxy potting, this technology allows for sealing to be completed in an ultra-short time, leading to alternatives aimed at process improvement and cost reduction. Additionally, because it involves mold forming, it offers high freedom of shape, receiving high praise for miniaturization and lightweighting of components. Our company, Matsumoto Processing, has been involved in the protection of many electrical components, including automotive electrical components, as a pioneer of this technology alongside our customers. We can achieve material selection, specification consideration, prototype shape design, mold manufacturing, and prototyping in a short time. Customers interested in this technology are encouraged to feel free to contact us.
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For waterproofing, dustproofing, and insulation of electrical components. The spotlight is on the sealing technology "Hot Melt Molding." Complete sealing of electrical components is achieved in just a few seconds.
"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, uses thermoplastic adhesives in low-pressure insert molding to achieve environmental protection such as waterproofing and dustproofing for electrical 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. Now, at Matsumoto Processing Lab, nine hot melt molding machines are installed, and you can observe the process of hot melt sealing electrical components. Customers wishing to visit are encouraged to inquire.
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Waterproof and insulation protection for small motors in a short time. The spotlighted sealing technology "Hot Melt Molding."
"Complete sealing of small motors in just a few dozen seconds. Ideal for waterproofing, dustproofing, and insulation!" Hot melt molding, which is gaining attention for waterproof sealing of small motors, is a technology that achieves environmental protection such as waterproofing and dustproofing by low-pressure insert molding of thermoplastic adhesives. Compared to traditional thermosetting resin sealing, two-component potting, and conformal coating, sealing is completed in an extremely short time, leading to its expanded adoption as a sealing technology. If you are considering waterproof sealing and protection for small motors, please feel free to contact us.
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For waterproofing, dustproofing, and insulation of electrical components. We present a small desktop molding device for the spotlighted sealing technology "hot melt molding" in a video. Complete sealing of electrical components is achieved in just a few seconds.
"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, is a technology that achieves environmental protection such as waterproofing and dustproofing by low-pressure insert molding of thermoplastic adhesives onto 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 the adoption of this sealing technology. Now, our company, Matsumoto Processing, is selling a compact tabletop molding device for hot melt molding called the "MK500." We have introduced this machine in a video on YouTube. Please take a look. (You can watch the video via the link below.) Thank you very much for your attention.
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Sustainable electrical component sealing technology "Hot Melt Molding." Suitable for waterproofing and insulation of electrical components. Achieves complete sealing in a short time.
"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, uses thermoplastic adhesives in low-pressure insert molding to achieve environmental protection such as waterproofing and dustproofing for electrical components like mounted circuit boards. Compared to traditional two-component potting and conformal coating, sealing is completed in an extremely short time, leading to its expanded adoption as a sealing technology. Additionally, due to the following features, it is also gaining attention as a sustainable sealing method: - The hot melt we handle is a solvent-free, one-component hot melt made primarily from plant-derived natural fatty acids. - The process does not require heating during the curing process, making it an energy-efficient operation. Now, at the Matsumoto Processing Lab, nine hot melt molding machines are installed, and it is possible to observe the actual process of hot melt sealing of electrical components. Customers interested in observing are encouraged to inquire.
