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  6. Waterproof insulation for substrates and electrical components. Sample gift of "hot melt molding."

Waterproof insulation for substrates and electrical components. Sample gift of "hot melt molding."

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Hot melt molding, low pressure molding, sealing, potting, coating.

last updated:Mar 03, 2025

Matsumoto kakou Co.,Ltd.
Matsumoto kakou Co.,Ltd.
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"Hot melt molding," which is increasingly being adopted for waterproofing and insulating sealing of substrates and electronic components. We are offering a sample of an LED substrate sealed with hot melt molding for free.

We will provide a sample of a 20×20mm substrate (with LED) molded and sealed with amber/black polyamide-based hot melt free of charge. Please feel free to check the texture in person. Additionally, a movie of the production of this sample is currently available on the YouTube video below. If you would like a sample, please do not hesitate to contact us. What is "hot melt molding"? It is a sealing method that uses a solvent-free, one-component thermoplastic adhesive to insert mold electronic components within a mold. It excels in environmental resistance characteristics such as waterproofing, dustproofing, and insulation, and it solidifies in a short time of just a few seconds, leading to its expanding adoption as a sealing method alternative to potting. Furthermore, the materials used in this method are primarily derived from natural fatty acids sourced from grains, making it an environmentally sustainable method. Examples of applications: - Automotive electronic components (interior/exterior of vehicles) - Electronic components for power tools - Electronic components for industrial equipment - Various sensors, switches, etc. - Components for outdoor equipment (such as agricultural machinery)

    Electrical equipment partsOther Auto PartsOther polymer materials
LED.jpg

Waterproof insulation for substrates and electrical components. Sample gift of "hot melt molding."

LED.jpg
LED.jpg
  • Matsumoto Processing Official Website
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basic information

LED × 3 pieces, mounting board (approximately 20 × 20 mm) Power supply: 9V

Price range

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Delivery Time

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Applications/Examples of results

- Automotive electrical components (interior/exterior) - Electric tool electrical components - Electrical components for industrial equipment - Various sensors, switches, etc. - Equipment parts for outdoor use (agricultural machinery, etc.)

Detailed information

  • PCB2.jpg

    Examples of waterproof sealing for agricultural machinery substrates (left is before sealing / right is after sealing; the black areas are the sealing agent)

  • motor.jpg

    Case of full perimeter sealing for integrated control board motor stator (the amber-colored part on the outer circumference is the sealing agent) Waterproof rating: IPX8

  • PCB.jpg

    Examples of sealing industrial equipment control circuits (left is before sealing / right is after sealing, with the black areas being the sealing agent)

catalog(3)

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"Complete sealing of electrical components in just a few dozen seconds. Waterproof, dustproof, and insulated." Case studies on hot melt molding (automotive parts) ■Matsumoto Processing■

"Complete sealing of electrical components in just a few dozen seconds. Waterproof, dustproof, and insulated." Case studies on hot melt molding (automotive parts) ■Matsumoto Processing■

TECHNICAL
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"Complete sealing of electrical components in just a few dozen seconds. Waterproof, dustproof, and insulated." Technical document: Introduction to hot melt molding. ■Matsumoto Processing■

"Complete sealing of electrical components in just a few dozen seconds. Waterproof, dustproof, and insulated." Technical document: Introduction to hot melt molding. ■Matsumoto Processing■

TECHNICAL
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"Complete sealing of electronic components in just a few dozen seconds. Waterproof, dustproof, and insulated." Differences between potting methods and hot melt molding methods.

"Complete sealing of electronic components in just a few dozen seconds. Waterproof, dustproof, and insulated." Differences between potting methods and hot melt molding methods.

TECHNICAL
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News about this product(1)

LED substrate hot melt sealing sample

【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.

  • Product news

"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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Matsumoto

Matsumoto kakou Co.,Ltd.

Manufacturing and processing contract

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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.

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