DISPENSERS FOR VISCOUS OR PASTY MATERIALS

摘要

A dispenser for viscous or pasty materials comprises a storage container in the form of a flexible tube (2) and an applicator (24). The tube (2) comprises an elongate, 1-piece hollow moulding of polymeric material, one end of which is closed and formed at the other end of which is an integral dispensing valve defining one or more dispensing slits (22). The or each dispensing slit is defined by a respective pair of resilient plates (18), which are opposed and inclined to one another and have a respective free edge, the two free edges defining a dispensing slit. The applicator has an applicator surface and one or more passages (30), into which the free edges of a respective pair of resilient plates is received. The width of each passage in the applicator is dimensioned such that there is a gap between the free edges of the resilient plates and the associated side surfaces of the passage, when the dispensing slit is closed and so that this gap is substantially closed, when the dispensing slit is opened by the application of pressure to the flexible tube in order to dispense material within the tube.

主权项

1. A dispenser for viscous or pasty materials comprising a storage container in the form of a flexible tube and an applicator, the flexible tube comprising an elongate, one-piece, hollow moulding of polymeric material, one end of which is closed and formed at the other end of which is an integral dispensing valve including a pair of resilient plates which are opposed and inclined to one another and have a respective free edge, the two free edges defining a single, linear dispensing slit, the applicator having an applicator surface and a single elongate passage formed in it in which the free ends of the resilient plates are received, the width of the single elongate passage being less at the ends of the passage than at the centre of the passage, whereby the application of pressure to the wall of the tube results in the free edges of the resilient plates moving apart to open the single dispensing slit and substantially abutt the side surfaces of the passage and, in use, in dispensing of a material through the dispensing slit onto the applicator surface.