Custom porous plastic
for your development and innovation
What is open-cell porous plastic?
Open cell porous plastic has a three-dimensional network of pores with open walls between adjacent pores. Our porous plastic has the open cell structure which give you a chance to explore possibilities in your innovation.
Features of Yamahachi Porous
Venting, applying, absorbing, wicking and more. Yamahachi Chemical's porous plastic has great features for your innovative products. Find more about the physical properties of our porous plastic.
Manufacturing technologies
Injection moulding, extrusion and grinding. Yamahachi Chemical supports your innovation with multiple manufacturing technologies of porous plastic.
Products and applications
Writing instruments and pen-type applicators
Porous nibs and tips made to order in Japan, for markers, applicators and liquid absorbing components.
Flash foam, Stamps and porous tips for Marking devices
Flash stamp foam pads and custom pre-inked photo stamps, made in Japan for stamp makers and brand owners.
Custom porous solution
Custom porous plastic made in Japan: rollers, sheets, moulded parts and applicator tips for oil and ink.
Technical information
Columns on porous plastic technology: what open-cell porous plastic is, marker nib types and flash stamps.
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...
Columns
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...
Columns
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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