Method for the treatment of packing material

Details Method for the treatment of packing material Method for the treatment of packing material

B - Operations, Transporting

31

B

93/63

B31B 1/00 (2006.01) B24B 1/00 (2006.01) B24B 19/22 (2006.01) B65D 5/42 (2006.01)

Patent

CA 1247911

ABSTRACT The invention relates to a method for carrying out along optional regions of a blank or a web of a material comprising at least one layer of paper or cardboard a local thickness reduction of the web or the blank for the purpose of obtaining visible mark- ings or of facilitating the shaping of the material and/or improving the prerequisites for manufacturing packages from the material. The said thickness reduction is achieved by passing the material over one or more die rolls, each being provided with raised portions and by bringing the material by means of the said die rolls into contact with a rapidly rotating grinding wheel with the help of which selected surfaces of the material are ground away.

494563

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