Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canada Minister of Environment
Original Assignee
Canada Minister of Environment
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canada Minister of Environment filedCriticalCanada Minister of Environment
Priority to CA000398192ApriorityCriticalpatent/CA1165666A/fr
Application grantedgrantedCritical
Publication of CA1165666ApublicationCriticalpatent/CA1165666A/fr
A moving web is cut using a knife cylinder having at least one blade and an anvil cylinder having at least one raised anvil surface, the knife cylinder is continuously rotated to effect perforation or cutting of the web