Back to results
US 9,914,234 B2Granted
Multilateral cutter
AssigneeKimberly-Clark Worldwide, Inc.
InventorsJames Leo Baggot, Robert Eugene Krautkramer, Kyle Andrew Krautkramer, Gregory Michael Bixler, Matthew Robert Wilson, Frank Stephen Hada
Life of this patent
Estimating the term…
Abstract
The present invention provides a perforating station comprising two or more discrete perforating stations, the stations synchronized with one another to cut a line of perforations across a web, such as a web of tissue paper, moving at high speeds. By providing two or more synchronized perforating stations the perforating station may increase the number of impacts per minute compared to prior art perforating devices.
Claims8
A method for intermittently cutting a moving target web, comprising:
- a. rotating a first knife roll having at least one knife member to provide an operative knife-member speed (V1);
- b. rotating a second knife roll having at least one knife member to provide an operative knife-member speed (V1);
- c. positioning the first knife roll and a first anvil member to provide a first operative nip region therebetween;
- d. positioning the second knife roll and a second anvil member to provide a second operative nip region therebetween;
- e. continuously moving the target web through the first and the second operative nip regions at a target web speed (VW) in the machine direction wherein there is some non-zero operative speed difference between the operative knife-member speed (V1) and the target web speed (VW) created by a rotational speed difference between the first and second knife members and first and second anvil members;
- and
- f. coordinating the rotational speed of the first and the second knife members to provide an operative cutting engagement between the first and the second knife members and the first and second anvil members to thereby cut the moving web while maintaining the above said non-zero operative speed difference between the first and second knife members and first and second anvil members at cut locations which are intermittently spaced along a machine-direction of the web.
4 more elements
Dependencies are inferred from the claim text.