An apparatus for producing a macroporous plastic film comprising a first roll rotatably supported by stationary frames; a second roll movable up and down along movable frames; a first driving means for rotating the movable frames; and second driving means mounted to the movable frames for moving the second roll up and down; one of the first and second rolls being a pattern roll having large numbers of high-hardness, fine particles on its rolling surface, and the other being an anvil roll; large numbers of fine pores being formed in the plastic film by the high-hardness, fine particles, in a state where the center axis of the second roll is inclined to the center axis of the first roll in a horizontal plane by the operation of the first driving means.

Disclosed are a corrugated paperboard cutting control apparatus and a corrugated paperboard cutting control method. Under control of a cutter control device (110), a camera (CA) images a flute arrangement state in a cut section LE of a corrugated paperboard after being cut. A lower-level management device (100) acquires a result of the imaging from the camera. Then, the lower-level management device performs: a phase determining processing of, based on the acquired imaging result, determining a flute arrangement phase located at an actual cut position within one flute pitch; a directive sheet length setting processing of adjusting a preset order-specified sheet length (L) in such a manner as to allow the flute arrangement phase determined through the phase determining processing to come closer to a preset reference flute arrangement phase, to thereby set a directive sheet length (Ln) having a value equal to an integral multiple of the flute pitch; and an instructing processing of giving an instruction to designate the directive sheet length set through the directive sheet length setting processing, to a cutting apparatus.

In one example, a rotary cutting device includes a helical cutting blade rotatable against a workpiece to cut the workpiece and translatable to engage the workpiece and to disengage the workpiece.

A method for perforating a web with a perforating apparatus includes: rotating a cylinder about a longitudinal cylinder axis, wherein the cylinder comprises at least one shaped blade; operatively engaging a moveable support with the cylinder; positioning an anvil disposed on the support so as to cooperate in contacting relationship with the shaped blade, wherein at least one of the blade and the anvil comprise a plurality of teeth, and wherein adjacent teeth are separated by a recessed portion; feeding a web between the cylinder and the support; and perforating the web as the anvil cooperates in contacting relationship with the shaped blade disposed on the rotating cylinder.

The present invention relates to a rotary cutting apparatus for cutting a web of material, including a cutting unit rotatably mounted on a support, a rotary cutter rotatably disposed in the cutting unit, the rotary cutter having a longitudinal axis, and at least one cutting edge disposed on the rotary cutter, wherein the at least one cutting edge is orientated at an angle to the longitudinal axis of the cutter. The cutting unit being counter orientated to the feed direction of the web by an adjustable angle equal to the cutting edge angle, less than the cutting edge angle or greater than the cutting edge angle.

A method for perforating a web with a perforating apparatus includes: rotating a cylinder about a longitudinal cylinder axis, wherein the cylinder comprises at least one shaped blade; operatively engaging a moveable support with the cylinder; positioning an anvil disposed on the support so as to cooperate in contacting relationship with the shaped blade, wherein at least one of the blade and the anvil comprise a plurality of teeth, and wherein adjacent teeth are separated by a recessed portion; feeding a web between the cylinder and the support; and perforating the web as the anvil cooperates in contacting relationship with the shaped blade disposed on the rotating cylinder.