| 摘要 |
The invention relates to a method for manufacturing a covering structure for a cardboard package comprising a tubular body made up of one or more layers of a cardboard material and a lid sealably assembled to the tubular body, said covering structure comprising a lid cardboard and a safety membrane, said method comprising the flat assembly of three materials in sheets or strips, i.e.: a cellulosic material covered with at least one reactivatable barrier material over the face thereof oriented towards said safety membrane, making up said lid cardboard, a laminating part arranged between said lid cardboard and the safety membrane, with a shape conjugated to the shape of the opening of the tubular body, made from paper, or paper whereof the face oriented towards said lid cardboard is coated with a material having barrier and sealing properties relative to said lid cardboard, and a material forming said safety membrane, made up of a paper coated with at least one reactivatable barrier material on the surface thereof not oriented towards a laminating part. |
