Cutting device for container coverings

摘要

The present invention discloses a container cover produced from a plastics film, having a rotating closure which has a rotatable cylindrical cutting device (100, 300), wherein the latter has a lower rim (110) on which at least one cutting edge section (120) is arranged, and wherein said at least one cutting edge section (120) has at least three teeth (130) which are located on a line extending in an inclined manner in relation to the bag, and wherein the front-most tooth in the direction of rotation comes first into contact with the plastics film during the cutting operation. The cutting device (100, 300) is characterized in that the inclination of the line on which the teeth (130) of each cutting edge section are located is selected such that, in the case of at least approximately maximum deformation of the plastics film before the latter is perforated by the front-most tooth, at least two following teeth of the same cutting edge section (120) are in direct contact with the plastics film.

主权项

1. A rotatable cylindrical cutting device (100, 300) for cutting through a container covering made from plastic film having a rotating closure, wherein said cutting device has a lower rim (110) on which at least one cutting edge section (120) is located, wherein the at least one cutting edge section (120) has at least three teeth (130) which lie on a line which extends at an incline in relation to the covering, and wherein a frontmost tooth in a direction of rotation first comes into contact with the plastic film in the course of a cutting operation, characterized in that an inclination of the line on which the teeth (130) of the at least one cutting edge section lie is such that upon occurrence of at least approximately maximum deformation of the plastic film, prior to perforation thereof by the frontmost tooth, at least two subsequent teeth of the same cutting edge section (120) are in direct contact with the plastic film.