Method and device for manufacturing a fibre moulding and a fibre moulding manufactured using these
First Claim
1. A method for manufacturing a head or base element for drinks packaging containers formed from a fibre moulding, the method comprising the following steps:
- dipping of a moulding screen arranged on a toolholder, said moulding screen extending along an outer contour of a moulding tool, into a fibre-containing pulp slurry in order to cover the moulding screen with fibre material,lifting of the toolholder in order to move the moulding screen covered with fibre material completely out of the pulp slurry,compressing the fibre material in an area of a peripheral edge of the moulding screen through expansion of a sleeve arranged around the moulding tool and going all the way around the moulding screen,relaxing pressure in the sleeve,removing fibre moulding from the moulding screen,transferring the fibre moulding onto a press tool, andmechanically compacting the fibre moulding on the press tool with a geometry corresponding to the fibre moulding.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and a device for manufacturing a fiber molding for drinks packaging containers having an improved structure and surface quality. The method includes the following steps: dipping of a forming wire arranged on a toolholder into a pulp slurry, lifting of the toolholder in order to move the covered forming wire completely out of the pulp slurry, compressing of the fiber material in an area of the circumferential edge of the forming wire through inflating of a circumferential collar, relaxing of the pressure in the collar, and removing of the fiber molding. A device for manufacturing of a fiber molding is also provided.
33 Citations
10 Claims
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1. A method for manufacturing a head or base element for drinks packaging containers formed from a fibre moulding, the method comprising the following steps:
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dipping of a moulding screen arranged on a toolholder, said moulding screen extending along an outer contour of a moulding tool, into a fibre-containing pulp slurry in order to cover the moulding screen with fibre material, lifting of the toolholder in order to move the moulding screen covered with fibre material completely out of the pulp slurry, compressing the fibre material in an area of a peripheral edge of the moulding screen through expansion of a sleeve arranged around the moulding tool and going all the way around the moulding screen, relaxing pressure in the sleeve, removing fibre moulding from the moulding screen, transferring the fibre moulding onto a press tool, and mechanically compacting the fibre moulding on the press tool with a geometry corresponding to the fibre moulding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification