Coupling structure, coupling process and coupling apparatus of laminate film
AssigneeTaisei Lamick Co., Ltd.
InventorKatsunori Futase
Life of this patent
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Abstract
A coupled portion of mutual laminate films sufficiently contributes to the formation of a packaging bag in that the coupled portion itself has excellent air tightness and liquid tightness. The tensile strength required for the laminate film is given to the coupled portion, whereby a temporary stop of a packaging apparatus is useless when a connecting portion of the laminate film is passed through the apparatus, thereby enhancing the operation efficiency and improving the yield of the material. Oriented base film layers are joined in a mitre form at the coupled portion between a rear end portion and a front end portion of laminate films comprising oriented base film layers and sealant layers.
Claims9
An apparatus for coupling end portions or side portions of laminate films, wherein each laminate film comprises a thermoplastic oriented base film layer and a sealant layer, comprising a pair of bases positioned at an interval allowing insertion of the end portions or the side portions of the laminate films, at least one pusher arranged on one of the pair of bases at at least one position of the one of the pair of bases and pushing the end portions or the side portions of the laminate films toward a side of an other of the pair of bases, an upper sealer and a lower sealer arranged on the other of the pair of bases at at least one other position corresponding to the at least one pusher, and a cutter that cuts the laminate films, wherein the cutter is distinct from the upper sealer and the lower sealer and is arranged below the at least one pusher, the upper sealer and the lower sealer.
Dependencies are inferred from the claim text.