NIESSTOFF-PRODUKTE AUS PLEXIFILAMENTAREN-FILM-FIBRILLEN-VLIESEN
摘要
This invention relates to improved sheet products and specifically to improved nonwoven sheet products made from highly oriented plexifilamentary film-fibril webs. The improved sheet products have high opacity and strength with a much wider range of porosity or Gurley Hill Porosity Values. In particular, sheet products made in accordance with the present invention have considerably higher Gurley Hill Porosity Values than similar weight sheet products subject to the same finishing treatments in accordance with prior known sheet materials. Similarly, sheet products made in accordance with the present invention can be made which have much lower Gurley Hill Porosity Values than prior sheet materials. The invention includes numerous methods and data characterizing the webs and sheets that form the improved sheet materials.
申请公布号
DE69627869(D1)
申请公布日期
2003.06.05
申请号
DE1996627869
申请日期
1996.07.24
申请人
E.I. DU PONT DE NEMOURS AND CO., WILMINGTON
发明人
FRANKE, A.;LIM, S.;MARSHALL, RAY;MILONE, P.;RATY, GAIL;VAIDYANATHAN, G.