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.
Claims11
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 the product face presents a planar surface portion and a convex surface portion, and wherein the convex surface portion presents greater porosity than the planar surface portion.
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 the product surface presents a planar surface portion and a concave surface portion, and wherein the planar surface portion presents greater porosity than the concave surface portion.
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 the product face presents a planar surface portion and a convex surface portion, and
- wherein the product face has a pair of surface portions which are substantially planar and present an angle of 45°-135° to each other, wherein the surface portion presenting the greatest angle to a horizontal plane during a principal operation of the tool or tool part presents greater porosity than the other surface portion.
Dependencies are inferred from the claim text.