Process for manufacturing a board element comprising cavities
AssigneeCeraloc Innovation AB
InventorsPer Josefsson, Per Nygren
Life of this patent
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Abstract
A process for manufacturing a board element including a plurality of cavities in a rear side thereof. The process includes displacing a substrate including a thermoplastic material in a feeding direction towards a pressing area of an impression device including a plurality of protruding impression elements and creating the cavities in a rear side of the substrate by impressing a substrate portion in the pressing area by the impression device, thereby obtaining the board element. An upstream thickness of the substrate upstream of the impression device exceeds a gap height of the pressing area during at least a part of an impression cycle.
Claims20
A process for manufacturing a board element comprising a plurality of cavities in a rear side of the board element, wherein the process comprises:
- displacing a substrate comprising a thermoplastic material in a feeding direction towards a pressing area of an impression device comprising a plurality of protruding impression elements;
- creating said cavities in a rear side of the substrate by impressing a substrate portion of the substrate in the pressing area by the impression device;
- and
- obtaining said board element, a depth of the cavities being at least 0.10 of a thickness of the substrate and/or of the board element,
- wherein an upstream thickness of the substrate upstream of the impression device exceeds a gap height of said pressing area during at least a part of an impression cycle, wherein the upstream thickness of the substrate is substantially constant,
- wherein the impression device comprises at least one roller comprising said impression elements, and
- wherein the impression elements are rigid.
A process for manufacturing a board element comprising a plurality of cavities in a rear side of the board element, wherein the process comprises:
- displacing a substrate comprising a thermoplastic material in a feeding direction towards a pressing area of an impression device comprising a plurality of protruding impression elements;
- creating said cavities in a rear side of the substrate by impressing a substrate portion of the substrate in the pressing area by the impression device;
- and
- obtaining said board element, a depth of the cavities being at least 0.10 of a thickness of the substrate and/or of the board element,
- wherein an upstream thickness of the substrate upstream of the impression device exceeds a gap height of said pressing area during at least a part of an impression cycle,
- wherein the impression device comprises at least one roller comprising said impression elements,
- wherein the impression elements are rigid, and
- wherein a downstream thickness of the substrate exceeds the upstream thickness of the substrate.
Dependencies are inferred from the claim text.