# US 11,298,907 B2 · Creasing plate for creasing a sheet from paper, cardboard, carton, foil or a similar material > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,298,907 B2 - Document ID: US11298907B2 - Status: Granted - Kind: B2 - Application number: 16/627,560 - Filed: 2018-06-25 - Published: 2020-07-09 - Granted: 2022-04-12 - Earliest claimed: 2017-07-06 - Assignees: Bobst Mex SA - Applicants: Bobst Mex SA - Inventors: Roberto Valterio - Web page: https://patentgrep.com/patent/US11298907B2 ## CPC - B31B 50/252: {using presses or dies} - B31B 50/25: Surface scoring - B31B 50/256: {using tools mounted on a drum} - B31F 1/08: Creasing (corrugating B31F1/20; zig-zag folding B65H45/20 {; combined with folding B31F1/0012, B31F1/0022; grooving by cutting B26D3/06, B26D3/08; by milling grooves B23C3/30; of plastics material B29C53/06}) - B31F 1/10: by rotary tools - B31B: MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER (making wound articles, e.g. wound tubes, B31C; combined making and filling B65B) - B31F: MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER (making layered products not composed wholly of paper or cardboard B32B) ## Abstract A creasing plate (24) for creasing a sheet (12) from paper, cardboard, carton, foil or a similar material, the creasing plate (24) consisting of plastically deformable material and comprising at least one creasing projection (26) formed from a plurality of small, plastically deformed areas which merge into each other so as to form the creasing projection (26). ## Claims ### Claim 1 A creasing plate for forming a crease in a sheet, the creasing plate comprising: a plastically deformable material including at least one creasing projection formed from a plurality of small, plastically deformed areas which merge into each other so as to form the at least one creasing projection, wherein the at least one creasing projection includes: a first concave portion formed in a first side of the plastically deformable material to face away from the sheet, and a first convex portion corresponding with and aligned with the first concave portion and formed in a second side of the plastically deformable material opposite to the first side to face the sheet to form a first portion of the crease. ### Claim 2 (depends on 1) The creasing plate of claim 1 wherein the creasing plate has a thickness in the range of 0.2 to 0.6 mm. ### Claim 3 (depends on 1) The creasing plate of claim 1, wherein the creasing plate is made from carbon steel or stainless steel. ### Claim 4 (depends on 1) The creasing plate of claim 1, wherein the creasing projection has a height in the order of 0.6 to 1.6 mm, in particular in the order of 1.2 mm. ### Claim 5 (depends on 1) The creasing plate of claim 1, wherein the creasing projection has a radius at its apex in the order of 0.2 to 0.8 mm, in particular in the order of 0.35 to 0.55 mm. ### Claim 6 (depends on 1) The creasing plate of claim 1, wherein the creasing projection has, in a cross section, a width at its base in the order of 1 to 3 mm, preferable approximately 2 mm. ### Claim 7 (depends on 1) The creasing plate of claim 1, wherein the creasing plate is a curved plate having a first clamping area at a forward end and a second clamping area at a rearward end. ### Claim 8 (depends on 1) The creasing plate of claim 1, wherein at least one driving fillet is provided which extends around the majority of the circumference of the creasing plate. ### Claim 9 (depends on 8) The creasing plate of claim 8, wherein the driving fillet is formed by one substantially continuous fillet. ### Claim 10 (depends on 8) The creasing plate of claim 8, wherein the driving fillet is formed by a plurality of substantially discontinuous fillets. ### Claim 11 (depends on 10) The creasing plate of claim 10, wherein the plurality of substantially discontinuous fillets are aligned in the circumferential direction. ### Claim 12 (depends on 10) The creasing plate of claim 10, wherein the plurality of substantially discontinuous fillets are orientated at an angle or at more than one angle to the circumferential direction. ### Claim 13 (depends on 8) The creasing plate of claim 8, wherein the driving fillet is added onto the creasing plate. ### Claim 14 (depends on 13) The creasing plate of claim 13 wherein the driving fillet consists of cured epoxy material. ### Claim 15 (depends on 1) The creasing plate of claim 1, wherein at least two straight creasing projections are provided, the creasing projections extending terminating in a distance from each other which is less than 3 mm. ### Claim 16 (depends on 15) The creasing plate of claim 15 wherein the creasing projections extend at an angle of 15° to 90° with respect to each other. ### Claim 17 (depends on 15) The creasing plate of claim 15, wherein the creasing projections merge with the remainder of the creasing plate according to a radius which is in the order of 0.2 to 1 mm. ### Claim 18 (depends on 1) The creasing plate of claim 1, wherein the plastically deformable material consists of sheet metal. ### Claim 19 (depends on 1) The creasing plate of claim 1, wherein the plastically deformable material consists of non-metallic material such as a polymeric material. ### Claim 20 (depends on 1) The creasing plate of claim 1, wherein the at least one creasing projection further includes: a second concave portion formed immediately adjacent to the first concave portion in the first side of the plastically deformable material to face away from the sheet, and a second convex portion corresponding with and aligned with the second concave portion and formed immediately adjacent to the first convex portion in the second side of the plastically deformable material opposite to the first side to face the sheet to form a second portion of the crease immediately adjacent to the first portion of the crease, wherein a length of the crease is greater than a width of the crease.