Tool or tool part, system including such a tool or tool part, method of producing such a tool or tool part and method of molding a product from a pulp slurry
AssigneeCelwise AB
InventorsJohn Andersson, Udo Vogt, David A. Pierce
Life of this patent
Estimating the term…
Abstract
The present document discloses a tool or tool part for use in a process of molding a product from a pulp slurry. The tool or tool part comprises a self-supporting tool wall portion having a product face, for contacting the product, and a back face on the other side of the wall relative to the product face. The tool wall portion presenting pores, which are provided by a plurality of channels extending through the tool wall portion, from the product face to the back face. The channels are straight or curved with no more than one point of inflection.
Claims5
A tool or tool part for use in a process of molding a product from a pulp slurry, the tool or tool part comprising:
- a self-supporting tool wall portion having a product face, for contacting the product, and a back face on the other side of the wall relative to the product face,
- the tool wall portion presenting pores, which are provided by a plurality of channels extending through the tool wall portion, from the product face to the back face,
- wherein the channels are straight or curved with no more than one point of inflection,
- wherein at least some of the channels present a cross section which tapers towards the product face,
- wherein the tool wall portion has a thickness of 0.5-10 mm, and
- wherein the tool wall portion is formed as a homogenous piece of material being at least 99% free from voids between channels.
Dependencies are inferred from the claim text.