Yamahachi Chemical
Our porous materials have potential applications in many fields.
Here are some examples of development solutions and challenges we have taken on.
What is porous plastic? Porous materials have a three-dimensional network of pores, or cells, inside them. When the walls between adjacent cells are partially open, the material is called open cell. Air and liquids pass through it, while particles are trapped. Sponges, pumice stones, wood and paper are all open cell materials in everyday life. Open cell porous plastics use that structure for...
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Art markers (alcohol markers) are popular for illustration and design. Many people tell us, “There are so many kinds that I don’t know which one to choose.” This article explains, in simple terms, what art markers are, the main nib shapes, and how to choose one, even if you are just starting out. What are art markers? Art markers are marker pens that...
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Pre-inked stamps let you stamp again and again without an ink pad. This article explains how pre-inked stamps work, the differences between the two types (relief type and flat type), and how each is made, using comparison tables. What is a pre-inked stamp? A pre-inked stamp is a stamp with ink stored inside the stamp surface (the text part), so you can stamp...
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These are case studies of self-inking marking pen tips for Lensmeter used in ophthalmology and other marking tips for Marking devices which are used in a wide range of fields. Special shapes, adequate hardness and durability were required. The porous tips had to absorb the special ink used by the customers and be capable of continuous marking on surfaces. Depending on the required...
Case studies
Our customer asked us to develop a porous component with a continuous protrusion shape that would readily absorb water. The component was to be used as part of a device to safely deliver a small current to non-planar surfaces. Our standard porous material is permeable and flexible, but hydrophobic, so a hydrophilic treatment was required. Once treated, the pores hold liquid, and the...
Case studies
This is a case study of the development of a porous tip that fits into pen applicators that deliver high viscosity liquids used in a variety of situations. We have developed a flexible porous tip with hollow to enable good pinpoint and uniform application of high viscosity liquids to curved and uneven surfaces. As our materials can be manufactured by injection moulding, it...
Case studies
