ties is to fit the pointed part of the folded back portion into the folded gap that is created when assembling. A national patent for beak has already been granted, and an interna-tional PCT application has been filed.rotary die-cut machine that had been used in the production of business cards, but the die-cutting force was not strong enough, so we introduced a new Thomson press machine. The clean room, which was newly constructed last October, is equipped with an air shower, Ocean Technology’s Thom-son press ‘OT-SRP III,’ Fujifilm Business Innovation’s digital printing machine ‘Revoria Press PC1120,’ and a dust col-lector each. The room was originally used as a conference room, but we decided to turn it into a clean room because the windows were originally double-sashed and the sealing ratio was high. We decided to convert the room into a clean room. We also created a positive pressure environment in-22Cups and PlateThe bowl is large and deepOT-SRPⅢHeat, oil, and grease resistant paperboard is usedThe material is high-density cardboard made of 100% virgin pulp with heat, oil, and water resistant converting made by Daio Paper Corporation, and free of fluorescent dyes. The thickness is 0.42mm, and even when stacked 1000 sheets, it is compact, measuring only about 45cm. “This paperboard was made as a prototype, so it is only produced in small lots, and we keep most of it in stock. We have conducted water resistance tests with various types of paperboard, and while many of them become soaked with water within an hour, the paperboard used for Beak had no problem even after being soaked in water for about 30 days. With prop-er storage, the paperboard can be used without problems such as mold, but the standard storage time is five years,” says Mr. Yamada.Manufacturing is done in a newly built clean room“Concerning converting, we tried to see if we could use the
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