A cartridge made of a material that does not to a significant extend absorb polar components from a dental composition stored therein. The force required to extrude a dental composition from the cartridge increases less over time in a cartridge of the invention than in a cartridge of the same configuration made of conventionally employed materials such as nylon-6.
申请公布号
US5100320(A)
申请公布日期
1992.03.31
申请号
US19900465802
申请日期
1990.01.16
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY
发明人
MARTIN, THOMAS W.;STEINMETZ, JEFFREY S.;CULLER, SCOTT R.