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US 6,814,827 B2Granted
Apparatus and method for connecting film
AssigneeTaisei Lamick Co., Ltd.
InventorKatsunori Futase
Life of this patent
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AssigneeTaisei Lamick Co., Ltd.
InventorKatsunori Futase
Estimating the term…
There is provided an apparatus for joining films wherein a rear end portion of a preceding film and a front end portion of a trailing film are mutually joined without using a joining material such as an adhesion tape or the like to sufficiently contribute the joint portion to heat seal likewise the other portions of the films and realize excellent liquid tightness and airtightness of the joint portion itself and also tensile strength required for the film itself is given to the joint portion. The apparatus comprises a fuse seal means arranged in the vicinity of a running path of the preceding film, a film-holding means holding the front end portion of the trailing film at a side opposite to the seal means with respect to the running path, an insert plate pushing the front end portion of the film held by the film-holding means into the seal means together with the preceding film, and an extra film removing means clamping a turnup portion of the preceding film pushed over the seal means by the insert plate and separating from a fuse-sealed portion.
An apparatus for joining films by joining a front end portion of a trailing film to a rear end portion of a preceding film, comprising a sealer that fuse-seals both films at a butt-seam state in the vicinity of a film running path, a film holder that holds the front end portion of the trailing film at a side opposite to the sealer with respect to the running path, an insert plate for pushing the front end portion of the trailing film held by the film holder into the sealer together with the preceding film, and an extra film remover that separates a turnup portion of the preceeding film pushed by the insert plate over the sealer at a clamped state from a fuse-sealed portion of the films.
A method of joining films by mutually joining a rear end portion of a preceding film and a front end portion of a trailing film with an apparatus as claimed in claim I, which comprises moving forward the insert plate during the feed running of the preceding film to push the front end portion of the trailing film held by the film holder into the sealer over a given length together with the preceding film, and then clamping a turnup portion of the preceeding film pushed over the position of the sealer by the extra film remover, and thereafter moving the insert plate backward and fusing both the films in a butt-seam by the sealer and further pivotably moving the extra film remover to separate the turnup portion of the preceeding film from a fuse-sealed portion.
Dependencies are inferred from the claim text.