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  3. Materials
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  6. Porous chips with excellent permeability, breathability, and chemical resistance.

Porous chips with excellent permeability, breathability, and chemical resistance.

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last updated:Aug 19, 2025

Yamahachi Chemical Co., LTD.
Yamahachi Chemical Co., LTD.
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Various shapes can be processed! Custom-made porous chips with a continuous pore structure.

Our company is engaged in the development and manufacturing of porous chips called "Yamahachi Porous Chips," which are made from PE as the base material. They have features such as permeability, breathability, chemical resistance, flexibility, collectability, hydrophobicity, and low dust generation, and they also possess functions for liquid retention (reservoir), liquid application, and adsorption. It is also possible to perform assembly processing onto fiber cores using injection molding. 【What is a continuous porous body?】 A continuous porous body is made up of countless interconnected pores, with walls between adjacent pores that are open. It has unique characteristics, such as allowing liquids or gases to pass through the openings of the pores and being able to store liquids within the pores. 【Where it can be utilized! Expected applications】 Coating materials such as solutions, liquid-absorbing materials, and special applications that require porous performance. *If you would like a sample, please let us know through the contact form. *For more details, please refer to the catalog or feel free to contact us.

    plastic
poroustip_top.jpg

Porous chips with excellent permeability, breathability, and chemical resistance.

poroustip_top.jpg
poroustip_top.jpg poroustip_1.jpg poroustip_2.jpg poroustip_3.jpg poroustip_4.jpg Poroustip_5.jpg
  • Related Link - https://yamahachi-chemical.co.jp/
  • Special site - Product/service details - https://pr.mono.ipros.com/yamahachi-chemical/produ…

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basic information

【 Main Features 】 ■ Material: LDPE ■ Molding and Processing Methods: Injection molding, polishing processing, fiber core assembly, etc. ■ Average Pore Diameter: 5-30 microns (random) ■ Average Porosity: 60-80% ■ Heat Resistance Temperature: 50-80℃ 【 Options 】 ■ Material Change: HDPE, PP, EVA ■ Hardness and Pore Diameter Adjustment ■ Hydrophilization ■ Heat Resistance Grade Change (approximately 100℃) * We accommodate custom manufacturing development tailored to customer needs.

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Applications/Examples of results

【Achievements】 ■Coating materials for liquid pharmaceuticals ■Porous functional components ■Marking materials built into equipment devices *For more details, please refer to the catalog or feel free to contact us.

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[Catalog] "Porous Material" that can be molded into various shapes - Free Design of Porous Material

[Catalog] "Porous Material" that can be molded into various shapes - Free Design of Porous Material

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[Technical Information] Solutions for Problems with Porous Materials

[Technical Information] Solutions for Problems with Porous Materials

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[Catalog] Continuous Porous Body "Yamahachi Porous"

[Catalog] Continuous Porous Body "Yamahachi Porous"

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[Company Information] Yamaha Chemical Co., Ltd. Development and Manufacturing of Continuous Porous Materials

[Company Information] Yamaha Chemical Co., Ltd. Development and Manufacturing of Continuous Porous Materials

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[Catalog] A must-see for writing instrument developers! Porous pen tip for markers

[Catalog] A must-see for writing instrument developers! Porous pen tip for markers

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Company information

Yamahachi

Yamahachi Chemical Co., LTD.

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Yamahachi Chemical manufactures and sells products based on our core technology "Yamahachi Porous," an open-cell porous plastic, and supports our customers' product development. Starting in the writing-instrument and stamp fields—porous pen nibs, pre-inked stamps, and stamp foam materials—we now focus on industrial porous materials (sheets, rollers and sponge swabs) that leverage 10 basic functions such as application, wiping, and absorption. By combining these 10 basic functions with 7 proprietary processing technologies, we solve customer challenges and deliver optimized porous materials with the required use, shape, and performance—including requirements that standard products cannot meet, through our integrated in-house production.

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