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.
Claims20
1-33. (canceled)
A method of producing a porous mold, the method comprising:
- providing a porous mold comprising a tool wall portion having pores provided by a plurality of channels extending through the tool wall portion, from a product face, for contacting the product, to a back face on the other side of the wall relative to the product face, wherein the channels are straight or curved with no more than one point of inflection;
- forming the channels by use of an additive manufacturing process, and
- forming at least one recess for a heating element in said tool wall portion,
- wherein said at least one recess is formed such that it extends into the tool wall portion from the back face thereof.
The method as claimed in claim 54, wherein said heating element is a lead for resistive heating, a channel for conducting a heated liquid or gas, or a magnetic body.
A method of producing a porous tool or tool part for molding a product from a pulp slurry, the method comprising:
- providing particles of a material from which the tool or tool part is to be formed,
- successively dispensing a plurality of layers of said particles at a target surface,
- directing an energy source at locations of each dispensed layer of particles at the target surface corresponding to cross-sections of the tool or tool part to be produced therein, such that the powder particles are fused together,
- forming a tool wall portion having pores provided by a plurality of channels extending through the tool wall portion, from a product face to a back face, wherein the channels are straight or curved with no more than one point of inflection, and
- forming at least one recess for a heating element in said tool wall portion,
- wherein said at least one recess is formed such that it extends into the tool wall portion from the back face thereof.
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 tool 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, and
- wherein at least one recess for a heating element is formed in said tool wall portion such that it extends into the tool wall portion from the back face thereof.
Dependencies are inferred from the claim text.