Self-closing liquid dispensing package

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 35/50 (2006.01) B65D 75/58 (2006.01) B65D 77/20 (2006.01) B65D 77/30 (2006.01)

Patent

CA 2175334

The present invention relates to a self-closing liquid dispensing package comprising a liquid container (10) and a self-closing flat channel valve (20) In liquid communication with liquid container, wherein the liquid container comprises a reservoir portion (13) for containing liquid. The reservoir portion is made of a thermoformed thermoplastic material. In one prefered embodiment of the present invention. the self-closing flat channel valve (20) comprises a first sheet member and a second sheet member (21, 22) wherein the sheets are substantially planar, are indexed face-to-face, and are sealed together along their longitudinal edges, wherein the sheet members are sufficiently flexible to arch away from each other to form a flow channel (25) therethrough to permit a flow of contained liquid in response to external pressure applied to the liquid container, and wherein at least one of the sheet members is sufficiently resilient to return the sheet members to their original planar position when the external pressure is released. In another preferred embodiment of the present invention the self-closing flat channel valve (20) is in liquid communication with the container via a connection portion wherein the connection portion comprises a stiffening crease (50). The package of the present invention is useful for multiple use of various liquid product having a wide range of viscosity.

L'invention concerne un emballage de distribution de liquide à autofermeture constitué d'un contenant à liquide (10) avec lequel une valve plate allongée de fermeture automatique (20) est en communication fluide. Ledit contenant comprend une partie réservoir (13) en matière plastique formée à chaud contenant le liquide. Dans un mode de réalisation préféré, la valve plate allongée de fermeture automatique (20) comporte un premier et un deuxième élément en feuille (21,22). Lesdites feuilles sont pratiquement planes, disposées face à face, et soudées le long de leurs bords longitudinaux. Ces éléments en feuille sont suffisamment souples pour se bomber vers l'extérieur et former entre eux un canal d'écoulement (25) permettant l'écoulement du liquide emprisonné en réponse à une pression externe appliquée sur le contenant à liquide, au moins un desdits éléments en feuille étant suffisamment élastique pour faire revenir ces derniers dans leur position plane d'origine lorsque cette pression est supprimée. Dans un autre mode de réalisation préféré, la valve plate allongée à autofermeture (20) est en communication fluide avec le contenant par l'intermédiaire d'un élément de raccord présentant un pli de renforcement (50). L'emballage selon l'invention peut servir à conditionner divers produits liquides d'usage multiple présentant une plage de viscosité étendue.

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