A method in which, while an article is carried with a main portion in contact with a carrying surface and a to-be-folded portion in contact with a folder plate, includes: a first guiding step, wherein a first guide surface guides the to-be-folded portion of the unfolded article, on a side of the carrying surface, in parallel to the carrying surface; a second guiding step, following the first guiding step, wherein a second guide surface, while being in contact with the to-be-folded portion, gradually raises the to-be-folded portion while moving downstream; and a third guiding step, following the second guiding step, wherein a third guide surface guides the to-be-folded portion so that the to-be-folded portion is folded onto the main portion.

A method in which, while an article is carried with a main portion in contact with a carrying surface and a to-be-folded portion in contact with a folder plate, includes: a first guiding step, wherein a first guide surface guides the to-be-folded portion of the unfolded article, on a side of the carrying surface, in parallel to the carrying surface; a second guiding step, following the first guiding step, wherein a second guide surface, while being in contact with the to-be-folded portion, gradually raises the to-be-folded portion while moving downstream; and a third guiding step, following the second guiding step, wherein a third guide surface guides the to-be-folded portion so that the to-be-folded portion is folded onto the main portion.

An interfolding machine (1) for producing stacks (100) of interfolded sheets according to a predetermined interfolding configuration, starting from a web (50) of paper, or similar materials, provides a feeding section (10), which provides to apply a tension on the web (50) and to move the same along a feeding direction (101) to feed the same to a cutting section (20), in which the web of paper (50) is cut into a series of sheets (11) of length predetermined, at a cutting point arranged between a cutting roller (25) and a counter-cutting element (26). Downstream of the cutting section (20) a folding section (30) is provided comprising a first and a second folding rollers (31,32) counter-rotating one with respect to the other. The first and second folding rollers (31,32) are arranged to rotate about respective rotation axes (131,132), in such a way to have a first peripheral velocity vP and are configured to fold, at a folding zone (35), the aforementioned plurality of sheets (11) in a plurality of panels and to form the stack (100) of interfolded sheets. The cutting roller (25) is configured in such a way to alternately distribute the aforementioned sheets (11) between a transfer roller (45) of transfer section (40), and the first folding roller (31).

An interfolding machine (1) for producing stacks (100) of interfolded sheets according to a predetermined interfolding configuration, starting from a web (50) of paper, or similar materials, provides a feeding section (10), which provides to apply a tension on the web (50) and to move the same along a feeding direction (101) to feed the same to a cutting section (20), in which the web of paper (50) is cut into a series of sheets (11) of length predetermined, at a cutting point arranged between a cutting roller (25) and a counter-cutting element (26). Downstream of the cutting section (20) a folding section (30) is provided comprising a first and a second folding rollers (31,32) counter-rotating one with respect to the other. The first and second folding rollers (31,32) are arranged to rotate about respective rotation axes (131,132), in such a way to have a first peripheral velocity vP and are configured to fold, at a folding zone (35), the aforementioned plurality of sheets (11) in a plurality of panels and to form the stack (100) of interfolded sheets. The cutting roller (25) is configured in such a way to alternately distribute the aforementioned sheets (11) between a transfer roller (45) of transfer section (40), and the first folding roller (31).

A sheet product package and method of making discrete plastic sheets includes a package enclosure with a dispensing opening structure and a plurality of discrete plastic sheets arranged in a stack. The plurality of discrete plastic sheets are disposed within the package enclosure, and each of the plurality of discrete plastic sheets is electrostatically charged. In the method of making the dispensable plastic sheets, electrostatically charged discrete plastic sheets are formed and arranged in a stack. The method may include forming a continuous plastic film, cutting the continuous plastic film into discrete plastic sheets, and, after cutting, electrostatically charging the discrete plastic sheets.

The invention provides a fiber product suction system, comprising a folding wheel and a plurality of valves. The folding wheel comprises a plurality of protruding wheels and a plurality of recessing wheels adjacent each other. A plurality of suction channels and at least one connecting channel are disposed within the protruding wheel, wherein the connecting channel is fluidly connected to the suction channel. The valve is disposed on the recessing wheel of the folding wheel, and includes a connecting opening, a valve channel and a plurality of valve openings, wherein the valve openings are disposed on two sides of the valve, and are fluidly connected to the connecting opening via the valve channel. An air extractor can extract the gas in each suction channel through the valve, and generate a negative pressure on part of suction channels of the protruding wheel, so that the fiber product suction system can be used to suck and fold paper.

A folding, or interfolding, unit, for folding, or interfolding, a first and a second plurality of sheets of paper in a machine for converting paper, comprises a first and a second folding, or interfolding, counter-rotating rolls configured to rotate about a respective longitudinal rotational axis and providing a plurality of suction holes. A vacuum generation device and a vacuum distribution device are, furthermore, provided for selectively putting into pneumatic communication the vacuum generation device with at least a row of the aforementioned suction holes. The folding, or interfolding, unit, comprises, furthermore, a first and a second cutting device providing, respectively, at least a first and a second cutting blade which cooperates with a first and a second plurality of counter-blades distributed along the folding, or interfolding rolls in order to cut a first and a second web of paper, in the first and in the second plurality of sheets.

A folding, or interfolding, unit, for folding, or interfolding, a first and a second plurality of sheets of paper in a machine for converting paper, comprises a first and a second folding, or interfolding, counter-rotating rolls configured to rotate about a respective longitudinal rotational axis and providing a plurality of suction holes. A vacuum generation device and a vacuum distribution device are, furthermore, provided for selectively putting into pneumatic communication the vacuum generation device with at least a row of the aforementioned suction holes. The folding, or interfolding, unit, comprises, furthermore, a first and a second cutting device providing, respectively, at least a first and a second cutting blade which cooperates with a first and a second plurality of counter-blades distributed along the folding, or interfolding rolls in order to cut a first and a second web of paper, in the first and in the second plurality of sheets.

A fiber product folding apparatus includes a first dashed-line cutting device used to form a plurality of first dashed lines on a first fiber product. Through control of the rotational speed of the first dashed-line roller, the interval between adjacent first dashed lines is adjusted. A first severing device receives the first fiber product with the first dashed lines by a predetermined length and cuts off the first fiber product. A second dashed-line cutting device is used to form a plurality of second dashed lines on a second fiber product. Through control of the rotational speed of the second dashed-line roller, the interval between adjacent second dashed lines can be adjusted. A second severing device receives the second fiber product that includes the second dashed lines by a predetermined length and cuts off the second fiber product. Finally, the first fiber product and the second fiber product are conducted to pass between a first folding roller and a second folding roller to proceed with folding. Since the dashed line interval of the fiber products is the size or length of a single sheet of fiber product, controlling the rotational speeds of the dashed-line rollers would allow for adjustment such that folding can be performed for multiple forms.

A web processing system is provided. The web processing system supplies a processed continuous web of material to a cutting arrangement. The cutting arrangement forms sheets from the continuous web of material. The sheets are then supplied to multiple folding arrangements such that a single web of material is used to supply sheets to multiple folding arrangements.