The steam vents are processed into the plastic resin by forming a drawing process in an arbitrary shape and at the same time shearing the sides. When holes are formed by general press working, scrap is generated and there is a risk of it being mixed into the container, but with this die, steam vents can be processed without generating any scrap, so production can be carried out safely. This is a patent-pending technology.

This die is used for through-hole processing of small-diameter holes (Φ0.5) in plastic resin containers using a needle-shaped punch. As it is not a shear processing structure, no scrap is generated during processing and stable production independent of press accuracy is possible.

When cutting with an engraving blade mould that punches out the contour shape of the product and a punching groove along the contour shape, the engraving blade enters the fine groove after cutting the product, enabling the product to be punched out reliably without the need for a plate or carrier sheet. As the tip of the engraving blade never touches anything other than the product, this has the effect of reducing wear and tear on the cutting edge.

A base plate of the same shape as the punching contour shape and an engraving blade of the same shape before the blade setting process are processed using a wire EDM machine, and after press-fitting into the base plate, the engraving blade is set up by cutting.
The greater the height difference of the 3D shape, the shorter the cutting process time, which enables significant cost reductions.
In the event of blade breakage, the engraving blade can be replaced, reducing the risk of rework.

The cutting edge ridge of approximately 1 µm (sharper than a Thomson blade) was successfully finished by cutting only.