초록 ▼

An easy openable closure device for a packaging container, comprising an outer layer, for instance injection moulded of plastics, and an inner layer possibly comprising several sublayers and such that it gives the closure device a specific characteristics as to welding possibilities, gas barrier and

An easy openable closure device for a packaging container, comprising an outer layer, for instance injection moulded of plastics, and an inner layer possibly comprising several sublayers and such that it gives the closure device a specific characteristics as to welding possibilities, gas barrier and light barrier. A first tearing denotation is arranged in the outer layer and merges into a second tearing denotation under a tangentially acute angle, said second denotation extending circumferentially around the closure device. At both sides of the circumferential tearing denotation, the inner layer is sealed to or connected to the outer layer. In the outer layer there is arranged an element having a portion for penetrating the first tearing denotation in the outer layer inside the said sealing region. The strength of the second tearing denotation is lower than the sealing strength between the layers and the latter strength is higher than the tearing strength of the inner layer.

대표청구항 ▼

A closure device for a packaging container, said closure device comprising: a panel for removably closing said packaging container, said panel having an outer layer and an inner layer, said outer layer and inner layer being separable from one another in a separable region so that a portion of said o

A closure device for a packaging container, said closure device comprising: a panel for removably closing said packaging container, said panel having an outer layer and an inner layer, said outer layer and inner layer being separable from one another in a separable region so that a portion of said outer layer can be penetrated and separated from said inner layer without opening the packaging container, and said outer layer and inner layer being connected in an openable region; a first tearing denotation in the outer layer to facilitate the separation of a portion of said outer layer from said inner layer in said separable region without opening the packaging container; a tearing element for initiating the tearing of said first tearing denotation in a first tearing direction; a second tearing denotation in said openable region, said first tearing denotation being connected to said second tearing denotation for initiating the tearing of said second tearing denotation upon the continued tearing of said first tearing denotation in a second tearing direction, said second tearing denotation being constructed and arranged to facilitate the penetration of said outer layer and inner layer at the connection therebetween so that the packaging container can be opened in said openable region upon the tearing of said second tearing denotation, whereby said first tearing direction and said second tearing direction are arranged so that said first tearing denotation must be torn in said second tearing direction to facilitate the penetration of said outer layer and inner layer at the connection therebetween.