Tissue perforating apparatus
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
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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.
Claims20
An apparatus for intermittently cutting a moving target web, comprising:
- a. a first perforating station comprising a first rotating knife roll having at least one knife member to provide an operative knife-member position and speed and a first anvil member;
- b. a second perforating station comprising a second rotating knife roll having at least one knife member to provide an operative knife-member position and speed and a second anvil member;
- c. a drive means for driving the first and second knife rolls;
- and
- d. a control means for coordinating the operative knife-member position and speed of the first and second knife members.
An apparatus for intermittently cutting a moving target web, comprising:
- a. a first perforating station comprising a first knife roll which has at least one knife member and is rotatable to provide an operative knife-member position;
- a first anvil which has at least one anvil member, the anvil positioned to provide a first operative nip region between the anvil and the knife roll;
- b. a second perforating station comprising a second knife roll which has at least one knife member and is rotatable to provide an operative knife-member position;
- a second anvil which has at least one anvil member, the anvil positioned to provide a second operative nip region between the anvil and the knife roll;
- c. a transport system which moves a substantially continuous target web at a web speed through the nip region;
- and
- d. a control system which synchronizes the rotational positioning of the first knife member with a rotational positioning of the second knife member.
An apparatus for intermittently cutting a moving target web, comprising:
- a. a first perforating station comprising a first rotating knife roll having at least one knife member to provide an operative knife-member speed and a first anvil member, the first rotating knife roll driven by a first motor;
- b. a second perforating station comprising a second rotating knife roll having at least one knife member to provide an operative knife-member speed and a second anvil member, the second rotating knife roll driven by a second motor;
- c. a pair of servo drive controllers in operative communication with each of the first and second drive motors;
- and
- d. a transport system which moves a substantially continuous target web.
Dependencies are inferred from the claim text.