Patent ID: 6315480
Filing Date: 2001-11-13
Classification: A45D,A61M,B44C,B65D

Abstract:
Device for delivering one or more doses of a fluid product, each dose being contained in a sealed reserve which is defined by an envelope at least partially made of a deformable flexible material, so that a crushing pressure exerted on the reserve causes the envelope to burst in order to release the product contained in the reserve, the envelope being provided locally with at least one region of weakness forming a pre-aperture so as to cause the envelope to burst instantly at the pre-aperture, the flow of product thus being channelled by the pre-aperture in a predetermined orientation, said envelope comprising two films made of at least one of a plastic, a metal and a composite material which are hermetically bonded to each other in a peripheral region in order to define, between the two films, the reserve containing the product characterised in that the peripheral bonding region comprises locally a weakened heat-sealing region forming said pre-aperture, while the rest of the peripheral bonding region is a definitive heat-sealing weld.