Heat sealing jaw, apparatus and method

B - Operations – Transporting – 65 – B

Patent

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B65B 51/30 (2006.01)

Patent

CA 2691858

A heat sealing jaw for use in cooperation with an opposing backing jaw for sealing layers of film together is described. The heat sealing jaw may be suitable for forming an easy-open feature on a. packaging pouch used to contain flowable material. In certain embodiments the heat sealing jaw comprises a jaw body, a heat sealing element secured to the jaw body, a support surface for clamping the layers of film together against the opposing backing jaw, and, a heat sink coupled to the heat sealing element for inducing a temperature gradient along a sealing face of the heat sealing element. The sealing face may have a protrusion for forming a notch within the layers of film. Related apparatuses and methods are also described.

L'invention porte sur une mâchoire de thermoscellage destinée à être utilisée en coopération avec une mâchoire d'appui opposée pour sceller des couches de film les unes aux autres. La mâchoire de thermoscellage peut être appropriée pour former un élément d'ouverture facile sur une poche d'emballage utilisée pour contenir un matériau pouvant s'écouler. Dans certains modes de réalisation, la mâchoire de thermoscellage comporte un corps de mâchoire; un élément de thermoscellage fixé au corps de mâchoire; une surface de support pour serrer les couches de film contre la mâchoire d'appui opposée; et un dissipateur thermique couplé à l'élément de thermoscellage pour induire un gradient de température le long d'une face de scellement de l'élément de thermoscellage. La face de scellement peut être munie d'une saillie pour former une encoche à l'intérieur des couches de film. L'invention concerne également des appareils et des procédés associés.

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