Embossing device and packaging machine comprising the device
First Claim
1. A method for identification of a section of a continuous web having a main line of extension and movable in a direction of feed according to a predetermined path, comprising:
- a step of definition on said web of a reference associated with said section,a step of reading said reference to identify said section using a contrast between said reference and said web,wherein said step of definition of the reference comprises a step of embossing said web using an embossing device,said reference comprising at least an embossed first segment and an unembossed second segment, said first segment having a contrast compared with said web which is different to the contrast of said second segment compared with said web, said first and second segments being positioned on said web along respective strips parallel with said main line of extension,said method comprising a step of reading the segment of the reference out of said first and second segments which has greatest reading contrast, said section being identified based on the segment having the greatest reading contrasts;
wherein said embossing device comprises a first embossing roller and a second embossing roller forming a passage for a web to be embossed, said first embossing roller and said second embossing roller being relatively positioned for embossing the web passing through the passage,wherein at least said first embossing roller comprises on its outer surface, an imprinting device for imprinting the reference on the web, the imprinting device comprising a first toothing having a first impression and at least a second toothing having a second impression different from the first impression, the second toothing comprising a zone without teeth; and
wherein said embossing step comprises imprinting said first segment by said first toothing according to a first pattern, imprinting a decorative pattern by said second toothing and defining said second segment by the zone without teeth.
1 Assignment
0 Petitions
Accused Products
Abstract
An embossing device comprises a first embossing roller and a second embossing roller forming a passage for a web of wrapping material to be embossed, which has a main line of extension and a direction of feed; the first embossing roller comprises on its outer surface toothings to make an imprint on the web; a first toothing having a first impression to imprint on said web a first segment of a reference for identifying a section of the web and a second toothing to imprint a decorative pattern on the web; the second toothing comprises a zone without teeth for defining on the web a second, unembossed segment of the reference; the first toothing and the zone without teeth are offset from each other along a directrix of the first roller.
34 Citations
12 Claims
-
1. A method for identification of a section of a continuous web having a main line of extension and movable in a direction of feed according to a predetermined path, comprising:
-
a step of definition on said web of a reference associated with said section, a step of reading said reference to identify said section using a contrast between said reference and said web, wherein said step of definition of the reference comprises a step of embossing said web using an embossing device, said reference comprising at least an embossed first segment and an unembossed second segment, said first segment having a contrast compared with said web which is different to the contrast of said second segment compared with said web, said first and second segments being positioned on said web along respective strips parallel with said main line of extension, said method comprising a step of reading the segment of the reference out of said first and second segments which has greatest reading contrast, said section being identified based on the segment having the greatest reading contrasts; wherein said embossing device comprises a first embossing roller and a second embossing roller forming a passage for a web to be embossed, said first embossing roller and said second embossing roller being relatively positioned for embossing the web passing through the passage, wherein at least said first embossing roller comprises on its outer surface, an imprinting device for imprinting the reference on the web, the imprinting device comprising a first toothing having a first impression and at least a second toothing having a second impression different from the first impression, the second toothing comprising a zone without teeth; and wherein said embossing step comprises imprinting said first segment by said first toothing according to a first pattern, imprinting a decorative pattern by said second toothing and defining said second segment by the zone without teeth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification