SUATU BODI KATUP DAN KONTAINER PENYIMPANAN ZAT CAIR UNTUK ALAT PENGELUARAN ZAT CAIR DENGAN MEMGGUNAKAN BODI KATUP

摘要

A porous material such as polyurethane foam is compressed to form skeletal portions in a three-dimensional network and mutually communicated pores or passages. The passages are closed at the skeletal portions by contacting the skeletal portions with each other so that valve caps are formed for closing the passages. Thus formed valve body is applicable to pen tips for writing instruments and printer heads for ink jet printers. IMAGE