| 摘要 |
1533027 Slip resistant bag WIIK & HOGLUND AB OY 26 April 1976 [28 April 1975] 16879/76 Heading B8K [Also in Division B5] A fertilizer sack is produced from a film having one, or opposed roughened surfaces which are effective against slippage, by extruding films of foamed and unfoamed polyethylene into bonding contact (see Divisions B4-B5), and then stretching the bonded films in at least one direction to break and stretch the foam cells, to produce the roughened surface comprising irregular net-like protrusions from the film. |
