A non-woven fabric is produced by stretching the film with on one surface a regular pattern of raised areas such as spaced hexagonal bosses and on the other surface a plurality of parallel grooves. Stretching is carried out in the groove direction. Preferably the polymer is a mixture of incompatible polymers so that on stretching a fibrous structure is formed. The film can be produced by melt-embossing. The stretched non-woven fabric may be coated with various adhesives to provide a tape useful in a medical context.
申请公布号
US4133310(A)
申请公布日期
1979.01.09
申请号
US19750627347
申请日期
1975.10.30
申请人
SMITH & NEPHEW RESEARCH LIMITED
发明人
LLOYD, RONALD;MURPHY, WILLIAM O.;PATCHELL, ALBERT G.;HERBERT, PETER J.