A cutting unit for providing transversal cuts and/or perforations to a string of packaging containers connected by transversal seals is provided. The cutting unit comprises a knife assembly and an anvil assembly rotatable against each other to form a nip for receiving a transversal seal of the string of packaging containers. The anvil assembly comprises an anvil blade having a first region and a second region such that when the first region is aligned with a knife blade of the knife assembly at the nip a cut is produced, and when the second region is aligned with the knife blade at the nip a perforation is produced. A method, a computer program and a computer-readable medium storing the computer program for providing transversal cuts and/or perforations to a string of packaging containers connected by transversal seals are also described.

A method for providing a nonlinear line of weakness on a web material including providing: a base, a support, a blade, and a driving means. The base may comprise at least one counter component having a length (L.sub.CC) where the counter component comprises a nonlinear shape having a shape width (W). The support may be operatively engaged with the base. The blade may have a length (L.sub.B) and may be disposed on the support so as to either contact or to come in close proximity with the counter component. At least one of the counter component and the blade may have a nonlinear shape. The driving means may be associated with one of the support or the base to reciprocally shift the one of the support or the base with respect to the other of the base or the support for a distance (D) in a shifting direction.

A method for providing a nonlinear line of weakness on a web material including providing: a base, a support, a blade, and a driving means. The base may comprise at least one counter component having a length (L.sub.CC) where the counter component comprises a nonlinear shape having a shape width (W). The support may be operatively engaged with the base. The blade may have a length (L.sub.B) and may be disposed on the support so as to either contact or to come in close proximity with the counter component. At least one of the counter component and the blade may have a nonlinear shape. The driving means may be associated with one of the support or the base to reciprocally shift the one of the support or the base with respect to the other of the base or the support for a distance (D) in a shifting direction.

The present disclosure relates to adjusting and maintaining a position of a cutting surface used to create lines of weakness for rolled products.

The present disclosure relates to adjusting and maintaining a position of a cutting surface used to create lines of weakness for rolled products.

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 method for manufacturing a fiber-reinforced resin molding material having a cut fiber tow impregnated with a resin includes a separation step of intermittently separating a fiber tow and forming at least two separation-processed lines arranged side by side in a width direction of the fiber tow and a cutting step of cutting the fiber tow at an interval in the longitudinal direction, and the separation step and the cutting step are carried out to satisfy (1) to (3). (1) 1≤c/L≤50 (2) c<a (3) b/L<1 “c” is an overlapping length of separated parts when one separation-processed line is projected to another separation-processed line adjacent thereto in the width direction, “L” is the interval in the cutting step, “a” is a length of the separated part in the separation-processed line, and “b” is a length of an unseparated part in the separation-processed line.

Packaging sheet (1) intended for packaging a food product, in particular a cheese product, the packaging sheet (1) comprising: an internal membrane (5) comprising at least one internal plastic layer (7) intended to be oriented towards the product to be packaged; and a printable external surface (10), the external surface (10) being intended to be oriented away from the product to be packaged, characterized in that the or each internal plastic layer (7) has a plurality of microperforations (8, 9) arranged in a random fashion on the or each internal plastic layer (7) in such a manner that the air permeability of the internal membrane (5) is comprised between 20 mL/min Bendtsen and 50000 mL/min Bendtsen.

Packaging sheet (1) intended for packaging a food product, in particular a cheese product, the packaging sheet (1) comprising: an internal membrane (5) comprising at least one internal plastic layer (7) intended to be oriented towards the product to be packaged; and a printable external surface (10), the external surface (10) being intended to be oriented away from the product to be packaged, characterized in that the or each internal plastic layer (7) has a plurality of microperforations (8, 9) arranged in a random fashion on the or each internal plastic layer (7) in such a manner that the air permeability of the internal membrane (5) is comprised between 20 mL/min Bendtsen and 50000 mL/min Bendtsen.

An apparatus for producing a microporous plastic film comprising a pattern roll having large numbers of high-hardness, fine particles; an anvil roll opposing the pattern roll; a conveying means for passing a plastic film through a gap of both rolls; a stationary frame rotatably supporting one of both rolls; a pair of laterally arranged movable frames rotatably supporting the other roll; and a pair of laterally arranged carriages to each of which each of the movable frames is fixed; at least one of the carriages moving in a running direction of the plastic film to generate positional difference between a pair of the movable frames, so that the center axes of both rolls are relatively inclined to each other.