A folding machine for folding fiber products and fiber products formed and stacked thereby are disclosed. The folding machine includes two folding devices, each of which includes a cutting device, a delivery wheel, a folding-line wheel, a platen wheel, and a folding wheel. The cutting device cuts the fiber product and transports the cut fiber product to the delivery wheel. The folding-line wheel is adjacent to the delivery wheel for making a first folding line on the fiber product carried by the delivery wheel, and then the platen wheel folds the fiber product along the first folding line. Subsequently, the once-folded fiber product is transported to the folding wheel. The folding wheels of the two folding devices are adjacent to each other and are used to fold the fiber product passing therethrough for a second time, and thus fiber products with three folds are formed.

A method of folding a sheet of paper. The method includes: folding the sheet of paper into an accordion shape comprising a plurality of pleats and collapsing the pleats to form a strip; folding the strip about in half to form a first folded strip; folding the first folded strip about a point that is about two-thirds a length of the first folded strip to form a second folded strip comprising an exposed portion that is about a third the length of the first folded strip; and folding the second folded strip about in half to form a third folded strip.

A method of folding a sheet of paper. The method includes: folding the sheet of paper into an accordion shape comprising a plurality of pleats and collapsing the pleats to form a strip; folding the strip about in half to form a first folded strip; folding the first folded strip about a point that is about two-thirds a length of the first folded strip to form a second folded strip comprising an exposed portion that is about a third the length of the first folded strip; and folding the second folded strip about in half to form a third folded strip.

A sheet folding device includes a folding path, a positioning member, a first folding roller, a second folding roller, a folding blade, a guide path, and a conveying roller. The positioning member is to support a leading edge of a sheet fed along the folding path and align the sheet at an initial folding position. The first folding roller is to engage with the second folding roller to form a folding nip. The folding blade is to move to an insertion position to push the sheet on the folding path into the folding nip. The guide path is provided around the first folding roller to return the sheet that has passed through the folding nip to the folding path. The conveying roller is to partially rotate around the first folding roller, to engage with the first folding roller to form a conveying nip and to feed the sheet along the guide path.

A packaging material web stock is provided. The packaging material web stock can include first and second plies overlaid and sealed to each other at a plurality of seals that include a plurality of transverse seals extending transversely across the plies, wherein a plurality of interior cavities are defined between the plies and the transverse seals, the first and second plies arranged in a web that includes a plurality of packaging units arranged longitudinally in a series along the web, wherein the first and second plies form walls of the packaging units, and at least some of the packaging units include at least one of the interior cavities, and an expansion material disposed in the interior cavities in an unexpanded configuration, wherein the expansion material is arranged within the inner cavities such that, when expanded to the expanded configuration, the expansion material is configured to provide cushioning in the walls.

A sheet folding processing apparatus performs folding processing on continuously conveyed sheets without lowering productivity. A sheet folding processing apparatus includes a conveyance roller pair, a folding roller pair forming a plurality of fold lines by bending a sheet conveyed from the conveyance roller pair in Z-shape, an additional folding roller and a lower folding guide arranged downstream of the folding roller pair to face each other and pressing the fold line of the sheet in corporation with each other, and a controller controlling operation of the above. The controller controls the folding roller pair to convey the sheet with the fold line downstream in a conveyance direction until the fold line passes through the additional folding position by a predetermined conveyance amount, to return the sheet upstream by reversely rotating the folding roller pair, and to position the fold line to the additional folding position for additional folding processing.

A sheet folding processing apparatus performs folding processing on continuously conveyed sheets without lowering productivity. A sheet folding processing apparatus includes a conveyance roller pair, a folding roller pair forming a plurality of fold lines by bending a sheet conveyed from the conveyance roller pair in Z-shape, an additional folding roller and a lower folding guide arranged downstream of the folding roller pair to face each other and pressing the fold line of the sheet in corporation with each other, and a controller controlling operation of the above. The controller controls the folding roller pair to convey the sheet with the fold line downstream in a conveyance direction until the fold line passes through the additional folding position by a predetermined conveyance amount, to return the sheet upstream by reversely rotating the folding roller pair, and to position the fold line to the additional folding position for additional folding processing.

An apparatus and method for forming zig-zag folded logs of web material is provided. The apparatus and method allows for forming logs having different sheet lengths on a same machine. Logs of web material having weakened regions at different locations between folds in the zig-zag folded web are also provided.

An apparatus and method for forming zig-zag folded logs of web material is provided. The apparatus and method allows for forming logs having different sheet lengths on a same machine. Logs of web material having weakened regions at different locations between folds in the zig-zag folded web are also provided.

To enable highly accurate fold processing by properly moving a sheet that has been subjected to fold processing. In a sheet processing apparatus that that performs fold processing in such a manner as to apply first fold processing to a sheet and then apply second fold processing at a position different from a fold line formed in the first fold processing so as to make one end of the sheet folded in the first fold processing lie inside the folded sheet, the first fold processing is applied to a sheet conveyed to an intermediate tray by a fold roller pair and, when a regulating stopper is moved to move the folded sheet that has been subjected to the first fold processing to a predetermined position of the intermediate tray, the folded sheet is gripped by a grip unit.