A creasing tool (53) configured to create a crease line (11, 12) in a fibrous substrate (35), the creasing tool comprises a contact portion (50) having a base surface (57) and a relief portion (54), the relief portion is provided as a protruding pattern extending from the base surface (57) and is configured to be pressed against said fibrous substrate, wherein the relief portion (54) comprises a crease-line forming portion (56) and a peripheral deformation portion (59), and wherein the peripheral deformation portion comprises a plurality of discrete segments in the shape of curved transverse surface areas (58) extending in a direction (E) transverse to a longitudinal direction (L) of the crease-line forming portion (56).

The invention relates to a method of creasing sheets (12) by using a creasing tool (14, 20, 21) cooperating with a counter element (22, 23), comprising the following steps: a creasing plate blank (24′) is provided with at least one creasing projection (26) by plastically deforming the material of the blank (24′) so as to form a creasing plate (24), the creasing plate (24) is mounted to a creasing tool (14, 20, 21), sheets (12) to be provided with at least one crease are advanced through a gap between the creasing tool (14, 20, 21) and the counter element (22, 23).

The invention relates to a method of creasing sheets (12) by using a creasing tool (14, 20, 21) cooperating with a counter element (22, 23), comprising the following steps: a creasing plate blank (24′) is provided with at least one creasing projection (26) by plastically deforming the material of the blank (24′) so as to form a creasing plate (24), the creasing plate (24) is mounted to a creasing tool (14, 20, 21), sheets (12) to be provided with at least one crease are advanced through a gap between the creasing tool (14, 20, 21) and the counter element (22, 23).

A sheet post-processing apparatus includes a first sheet conveyance passage, a second sheet conveyance passage, a sheet folding portion, and a merging portion. The second sheet conveyance passage branches off from a branch portion on the first sheet conveyance passage. The merging portion is located downstream of the branch portion on the first sheet conveyance passage, and there a folding conveyance passage of the sheet folding portion merges with the first sheet conveyance passage. When performing a folding process on a sheet, a controller guides the sheet conveyed from a sheet introduction port into the first sheet conveyance passage via the branch portion to the second sheet conveyance passage, then reverses the conveyance direction to guide the sheet to the sheet folding portion to perform the folding process, and passes the sheet through the folding conveyance passage, merges the sheet into the first sheet conveyance passage at the merging portion.

A sheet post-processing apparatus includes a first sheet conveyance passage, a second sheet conveyance passage, a sheet folding portion, and a merging portion. The second sheet conveyance passage branches off from a branch portion on the first sheet conveyance passage. The merging portion is located downstream of the branch portion on the first sheet conveyance passage, and there a folding conveyance passage of the sheet folding portion merges with the first sheet conveyance passage. When performing a folding process on a sheet, a controller guides the sheet conveyed from a sheet introduction port into the first sheet conveyance passage via the branch portion to the second sheet conveyance passage, then reverses the conveyance direction to guide the sheet to the sheet folding portion to perform the folding process, and passes the sheet through the folding conveyance passage, merges the sheet into the first sheet conveyance passage at the merging portion.

A scoring rule for forming a folding score on a sheet material includes a pair of score members with a scoring surface portions with individually asymmetrical flat outer surfaces extending at an angle. The score members press against a first side of the sheet material to cause a pair of laterally spaced fold score lines to be formed on the first side of the sheet material by the scoring surface portions. As the scoring rule engages the sheet material, a second, opposite side of the sheet material is compressed such that rubber-type material of an anvil of the rotary press bulges towards and forces the sheet material into an area between the pair of score members causing a self-contained single longitudinally inwardly extending groove to be formed on the second, opposite side of the sheet material along a line parallel to and positioned between the laterally spaced score lines.

A scoring rule for forming a folding score on a sheet material includes a pair of score members with a scoring surface portions with individually asymmetrical flat outer surfaces extending at an angle. The score members press against a first side of the sheet material to cause a pair of laterally spaced fold score lines to be formed on the first side of the sheet material by the scoring surface portions. As the scoring rule engages the sheet material, a second, opposite side of the sheet material is compressed such that rubber-type material of an anvil of the rotary press bulges towards and forces the sheet material into an area between the pair of score members causing a self-contained single longitudinally inwardly extending groove to be formed on the second, opposite side of the sheet material along a line parallel to and positioned between the laterally spaced score lines.

A creasing machine includes a creasing tool, a counter element cooperating with the creasing tool, and a transportation system for advancing sheets through a creasing area between the creasing tool and the counter element, wherein the creasing tool has a creasing plate provided with at least one creasing projection, and wherein the creasing projection on the creasing plate is constituted by a plurality of small, plastically deformed areas which merge into each other so as to form the creasing projection.

A creasing machine includes a creasing tool, a counter element cooperating with the creasing tool, and a transportation system for advancing sheets through a creasing area between the creasing tool and the counter element, wherein the creasing tool has a creasing plate provided with at least one creasing projection, and wherein the creasing projection on the creasing plate is constituted by a plurality of small, plastically deformed areas which merge into each other so as to form the creasing projection.

A converting machine is used to convert sheet material into packaging templates for assembly into boxes or other packaging. The converting machine includes a converting assembly that performs transverse conversion functions and longitudinal conversion functions on the sheet material to create the packaging templates. A fanfold crease sensing mechanism detects the presence and location of fanfold creases in the sheet material. Based on the location of the fanfold creases, the fanfold creases are either cut out of the sheet material, or the sheet material is cut to adjust the position of the fanfold crease in a packaging template.