| 摘要 |
FIELD: packaging industry. ^ SUBSTANCE: multilayer sack consists of at least on external and at least one internal paper layer, from one synthetic intermediate layer between external and internal layer. In paper sack from one side it is provided overlap of external paper linen and partially overlap of synthetic linen. External paper linen at section of overlap is partially glued together to itself. ^ EFFECT: ensured by interrupted longitudinal glue it is provided total yield of air at charging already. ^ 5 cl, 3 dwg |
