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US 5,509,885 AGranted
Creasing apparatus
AssigneeTetra Alfa Holdings & Finance S.A.
InventorJohn-Erik Brunlid
Life of this patent
Estimating the term…
Abstract
The present invention relates to a creasing apparatus with a male part with bars and a cooperating female part with grooves. Elastic material elements are inlaid in the grooves of the female part. The elements are pretensioned and locked in their grooves by means of T-shaped end pieces.
Claims10
A creasing apparatus comprising:
- a male part provided with one or more bars;
- a female part corresponding to the male part, the female part having a surface and being provided with one or more grooves formed in the surface adapted to receive the bars;
- and
- one or more elastic material elements inlaid in the grooves of the female part, the elastic material elements being compressible by the bars, when packaging material is positioned between the bars and the elastic material elements and the bars are received in the grooves, such that the elastic material elements are held in contact with one side of the packaging material to reduce stress in the packaging material,
- wherein the elements have at least two T-shaped end pieces which are inlaid in the grooves of the female part such that the elements are locked in the grooves.
2 more elements
A creasing apparatus comprising:
- a male part provided with one or more bars;
- a female part corresponding to the male part, the female part having a surface and being provided with one or more grooves formed in the surface adapted to receive the bars;
- and
- one or more elastic material elements inlaid in the grooves of the female part, the elastic material elements being compressible by the bars, when packaging material is positioned between the bars and the elastic material elements and the bars are received in the grooves, such that the elastic material elements are held in contact with one side of the packaging material to reduce stress in the packaging material,
- wherein the elements are pretensioned by 2-20% in the longitudinal direction of the grooves.
2 more elements
Dependencies are inferred from the claim text.