초록 ▼

A packing comprising first and second opposed surfaces in a closure area of the packing has profiled portions secured to and extending over each of the opposed surfaces, which profiled portions are adapted to be releasably interengaged to permit connection and disconnection of the opposed surfaces.

A packing comprising first and second opposed surfaces in a closure area of the packing has profiled portions secured to and extending over each of the opposed surfaces, which profiled portions are adapted to be releasably interengaged to permit connection and disconnection of the opposed surfaces. The profiled portions are each formed integrally with an outer layer of a strip material secured to the associated one of the opposed surfaces. The outer layer of the strip material is formed of a material well suited for forming a peel seal weld with the other opposed surface of the packing, such as a portion of the outer layer of the opposing strip material. The outer layer of each strip material is secured to the one of the first and second opposed surfaces via a base layer of the strip material to which the outer layer is secured by means of a non-peel seal type connection. As a result, the sheet material of the packing, a bag for example, need not be formed of a peel seal weldable material.

대표청구항 ▼

A method of manufacturing a packing adapted to be closed by a peel seal weld joint at an opening thereof and also adapted to be closed and recloseable by means of profile portions extending over opposed surfaces of the packing in a closure area thereof, comprising the steps of providing a composite

A method of manufacturing a packing adapted to be closed by a peel seal weld joint at an opening thereof and also adapted to be closed and recloseable by means of profile portions extending over opposed surfaces of the packing in a closure area thereof, comprising the steps of providing a composite strip material including a pair of opposed strip materials each comprising a base layer formed of a first material adapted to be secured to a surface of the packing and an outer layer formed of a second material adapted to form a peel seal weld with another surface, the second material of at least one of said strip materials being a peel seal mixture, each of said strip materials having at least one longitudinally extending profiled portion formed integrally therewith for forming a recloseable interlocking joint with the at least one longitudinally extending profiled portion on the opposing strip material, and said base layer and said outer layer of each strip material being securely connected to one another by means of a non-peel seal type of connection, and wherein profiled portions of the strip materials are engaged with one another and the outer layers of the strip materials are peel seal welded to one another with a peel seal weld having a bond strength on the order of 1/5 or less the strength in tension of the base layers of the strips, and securing said composite strip material to respective surfaces of packing material by connecting said base layer of each of said strip materials to a packing material surface.