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US 5,081,819 AGranted
Method and apparatus for manufacture and packaging of filter packs for use in a brew basket
AssigneeCloud Corporation
InventorCharles E. Cloud
Life of this patent
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AssigneeCloud Corporation
InventorCharles E. Cloud
Estimating the term…
A packaging machine and a method for continuous forming of filled packages from relatively unstretchable roll stock of crinkled heat sealable filter paper. A series of pouch forming drum sockets are provided in an outer surface of a revolving drum and the paper is trained on the drum over the sockets. Another mechanism is provided for slitting the sheet of the filter paper along its length creating a pair of side-by-side heat sealable filter paper strips before the paper reaches the drum. A driven endless flexible before the paper reaches the drum. A driven endless flexible belt is operatively engaged with the outer drum surface. A suction device is provided for drawing overlapped belt areas of the belt into the drum sockets along with the relatively unstretchable crinkled filter paper strips sandwiched between the overlapped belt area and the pouch forming drum sockets thereby forming side-by-side continuous strips of crinkled filter paper pockets. An apparatus is provided for filling the crinkled filter paper pockets with material to be packaged while on the drum. A further apparatus is provided for training and overlapping a second sheet of heat sealable filter paper over the filled paper sockets on the pair of side-by-side paper strips. A heat sealer is provided for sealing the overlapped heat sealable sheets of filter paper in sealed connection about the filled paper sockets to form sealed filled pouches and a cutter cuts them apart and they are deposited on a conveyor.
In a packaging machine for continuous forming of filled packages from relatively unstrechable roll stock of crinkled heat sealable filter paper, the improvement of a driven revolving drum attached to the machine, a series of pouch forming drum sockets provided in an outer surface of the drum, means for training roll stock filter paper onto said drum over said sockets, means for slitting the sheet of the filter paper along its length creating a pair of side-by-side heat sealable filter paper strips before the filter paper reaches the drum, a driven endless flexible belt operatively engaged with the outer drum surface, suction means for drawing overlapped belt areas of the belt into the drum sockets along with the relatively unstretchable crinkled filter paper strips sandwiched between the overlapped belt area and the pouch forming drum sockets thereby forming side-by-side continuous strips of crinkled paper pockets, means for filling the crinkled filter paper pockets with material to be packaged while on the drum, means for training and overlapping a second sheet of heat sealable paper over the filled filter paper sockets on the pair of side-by-side filter paper strips, means for sealing the overlapped heat sealable sheet of filter paper in sealed connection about the filled paper sockets on the pair of heat sealable filter paper strips to form sealed filled pouches, conveyor means for transporting sealed filled pouches after being severed from the lapped sealed strips of filter paper, and means for severing the filled pouches from the overlapped sealed strips and depositing the severed filled pouches upon the conveyor means.
In a packaging machine for continuous forming of filled packages from relatively unstretchable roll stock of crinkled heat sealable filter paper, the improvement of a driven revolving drum attached to the machine, a series of pouch forming drum sockets provided in an outer surface of the drum, means for training roll stock filter paper onto said drum over said sockets, a driven endless flexible rubber-like belt operatively engaged with the outer drum surface, suction means for pulling overlapped belt areas of the belt into the drum sockets along with the relatively unstretchable crinkled filter paper strips sandwiched between the overlapped belt area and the pouch forming drum sockets thereby forming paper pockets along the length of the filter, said suction means being releaseable to allow the belt to elastically withdraw from the drum sockets on a successive basis after the paper pockets have been formed, means for filling the crinkled filter paper pockets with material to be packaged while on the drum, means for training and overlapping a second sheet of heat sealable paper over the filled filter paper sockets on the filter paper, means for sealing the overlapped heat sealable sheet of filter paper in sealed connection about the filled paper sockets on the pair of heat sealable filter paper strips to form sealed filled pouches, conveyor means for transporting sealed filled pouches after being severed from the lapped sealed strips of filter paper, and means for severing the filled pouches from the overlapped filter paper and depositing the severed filled pouches upon the conveyor means.
A method of forming product filled individual packages comprising the steps of moving a first continuous web of crinkle type heat sealable filter paper of a relatively nonstretchable type towards pouch forming areas, training the filter paper onto a revolving drum carrying the forming areas, comprising of circularly arranged drum sockets, training a revolving endless rubber belt over the pouch forming area, applying a releasable suction to the vented bottoms of the drum sockets drawing the crinkle type heat sealable filter paper and an engaged portion of the rubber belt into the underlying drum socket consecutively forming paper pouches in the web, releasing the suction and allowing the rubber belt to exit from the formed paper pouch, filling the pouches with product, causing a second length of paper of heat sealable filter paper to be placed against the first length of paper together, sealing together the second length of paper to the strips forming filled sealed pouch areas, and cutting out the sealed pouches from the sealed first and second lengths of filter paper to form individual product filled packages.
A method of forming product filled individual packages comprising the steps of moving a first continuous length of crinkle type heat sealable filter paper of a relatively nonstretchable type towards a forming area, simultaneously training a stretchable flexible rubber-like belt in contact with the filter paper with the filter paper being between the belt and the forming area, consecutively suction drawing spaced areas of both the filter paper and the rubber-like belt into pouch forming sockets forming side-by-side pouches from the crinkle type heat sealable filter paper spaced along the length of the paper, releasing the suction allowing the stretched areas of the belt to move out of the pockets, filling the pouches with product, causing a second length of paper of heat sealable paper to be superimposed against the first length of paper together, sealing the superimposed lengths of paper together forming filled sealed pouch areas, and cutting out the sealed pouches from the sealed first and second lengths of filter paper to form individual product filled packages.
In a pouch forming apparatus for manufacturing a filled filter pack comprising, a hollow rotatingly driven drum having an annular rim flange, circumferentially spaced drum web forming pockets provided about then circumference of said annular rim flange, circumferentially spaced drum land areas separating the web forming pockets from one another, a roll of porous relatively non-stretchable crinkled filter paper providing a porous paper web trained on said drum, an endless driven rubber belt assembly mounted radially outwardly of said hollow drum, said belt assembly including a flexible rubber belt trained to confront at least two of said drum pockets with said rubber belt extended circumferentially over said rotatively driven pockets and lands on said drum, a suction head mounted internally of said drum having releaseable suction means co-acting with said lands and said pockets and operating to generate an initial suction force to suck confronting areas of said porous paper web and said flexible rubber belt into successive drum pockets, said suction means then being releaseable to allow said rubber belt to retreat from said pockets to create a succession of filter pockets in said porous paper web for filling with product.
A method of forming product filled individual pouches comprising the steps of moving a first continuous web of crinkle type heat sealable filter paper of a relatively nonstretchable type towards a paper pouch forming area, engaging a stretchable flexible rubber-like belt against the first web of the filter paper with the filter paper being positioned between the belt and the paper pouch forming area, consecutively suction drawing spaced areas of both the filter paper and the rubber-like belt into pouch forming sockets forming side of pouches from the crinkle type heat sealable filter paper spaced along the length of the paper while reducing the width of the web on opposite sides of each pouch, releasing the suction allowing the stretched areas of the belt to move out of the pockets, filling the pouches with product, causing a second length of paper of heat sealable paper to be superimposed against the first length of paper together, heating the second length of paper and rolling it against the first web while leaving the product and the first web relatively unheated sealing the superimposed lengths of paper together forming filled sealed pouch areas, and cutting out the sealed filled pouches from the sealed together first and second lengths of filter paper to form individual product filled pouches.
Dependencies are inferred from the claim text.