US 8,539,741 B2Granted

Seal and cut method and apparatus

AssigneeTriangle Package Machinery Company

InventorsVadim A. Lubezny, Steven P. Bergholt

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Abstract

A method for forming a bag includes moving a film at a first velocity, forming a seal on the moving film with a sealing device moving at the first velocity, moving the film and the sealing device relative to each other and thereby moving the sealing device out of alignment with the seal, aligning a film separation device with the seal on the moving film, moving the film separation device with the moving film, and separating the film across the seal with the film separation device. A sealing and cutting device includes a carriage moveable along a longitudinal axis and upper and lower grippers coupled to the carriage. A sealing device and a cutting device are positioned between the upper and lower grippers.

Claims14

Dependent claims

A method for forming a bag comprising:

moving a film at a first velocity;
forming a seal on said moving film with a sealing device moving at said first velocity, wherein said sealing device comprises a pair of jaws each comprising an upper and lower gripper formed on each of said jaws and a sealing member, wherein said sealing member is positioned between said upper and lower grippers, and wherein said forming said seal on said moving film comprises closing said pair of jaws and gripping said film with said upper and lower grippers;
moving said film and said sealing device relative to each other and thereby moving said sealing device out of alignment with said seal;
aligning a film separation device with said seal on said moving film and moving said film separation device with said moving film, wherein said film separation device is coupled to at least one of said pair of jaws and is positioned between said upper and lower grippers of said at least one of said pair of jaws;
and
separating said film across said seal with said film separation device.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/703,434Filed 10 Feb 2010
Published: US 2011/0192117 A111 Aug 2011
Granted: 24 Sep 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

B65B 51/303
Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes: reciprocating along only one axis
B29C 65/02
Joining or sealing of preformed parts , e.g. welding of plastics materials; Apparatus therefor: by heating, with or without pressure
B29C 65/7451
Using a single unit having both a severing tool and a welding tool: the severing tool and the welding tool being movable with respect to one-another
B29C 66/1122
Single lapped joints: single lap to lap joints, i.e. overlap joints

Family

US 2011/0192117 A1Pre-grant publication · published 11 Aug 2011
US 8,539,741 B2This patent

From the US filing history. Foreign family members aren’t listed.

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