Waterproof sealing of substrates: Differences between traditional methods and hot melt molding methods.
Low Pressure Molding, Hot Melt Molding, Waterproof and Dustproof, Encapsulation Molding
"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
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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.
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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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Company information
Our company provides comprehensive support for the introduction of hot melt molding methods, from initial technical discussions and appropriate hot melt selection to prototype production and evaluation, optimal process considerations for mass production, proposals for optimal equipment or the design and manufacturing of dedicated machines (automated systems), hot melt supply and line support. For customers for whom equipment installation poses a barrier to adopting this method, we even offer production contracting at our facility, ensuring support from "start to finish." **Benefits of Hot Melt Molding** - Improved production efficiency and cost reduction through alternative methods to potting - Greater design flexibility due to mold forming, enabling miniaturization and lightweighting of components - Use of sustainable raw materials derived from natural fatty acids We have various molding machines and displays of adopted products available at our prototype lab in Fuji City, Shizuoka Prefecture. Please feel free to visit, even just for a tour.
