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 movable 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.

A method of perforating a web includes: rotating a cylinder comprising a longitudinal cylinder axis and at least one shaped anvil disposed on the cylinder; operatively engaging a support with the cylinder, wherein the support is moveable with respect to the cylinder; positioning a blade disposed on the support so as to cooperate in contacting relationship with the anvil, wherein the blade is substantially parallel to the longitudinal cylinder axis, and 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; and feeding a web between the cylinder and the support while the blade cooperates in contacting relationship with shaped anvil to perforate the web.

A liquid container includes a brim forming a mouth opening into a product receiving chamber formed in a cup. A lid is coupled to the rim to close the mouth of the cup.

A mechanism and a method for slitting silicone membranes using automated slitting blades is presented. The pattern of slits in the membrane can be adjusted by using a cutting cylinder comprised of a plurality of circular cutting gears assembled in parallel.

The cutting cylinder is of indefinite length, but in the preferred embodiment is approximately 15″ long and 3″ in diameter. The silicone membrane can range in thickness from 0.005″ to 0.01″ inch.

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.

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 movable 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.

A device for production of bags that preferably consist mostly of paper includes a perforation device for cross perforation of a material web, a tube formation device for formation of a tube from the material web, a first separation device to separate individual tube sections, a device to form a bottom on one of the ends of the tube section, and a second separation device with which individual material sections can be torn off from the tube sections or bags.

The invention provides a piercing system for piercing at least one sealing membrane (18) closing off at least one cavity (14) of a receptacle, said system including a piercing member (110) configured to puncture the sealing membrane (18) and an ionizing device for removing the electrostatic charges that might be carried by said cavity (14). In accordance with the invention, said ionizing device comprises the piercing member (110) that is adapted to present ionizing properties. The invention also provides a method of piercing at least one sealing membrane (18) closing off at least one cavity (14) of a receptacle, said method comprising piercing the sealing membrane (18) in order to open up said cavity (14), and removing the electrostatic charges that might be carried by said cavity (14), wherein the sealing membrane (18) is pierced and the electrostatic charges is removed by a piercing member (110) adapted to present ionizing properties.

A punching device includes a punching unit, a driving unit, an edge detecting unit, a punching position setting unit, and a punching controlling unit. The punching unit punches three holes in a transported sheet along its transport direction. The driving unit moves the punching unit in an orthogonal direction. The edge detecting unit detects, in at least two locations separated from each other in the transport direction, an edge position of an edge of the sheet on one side in the orthogonal direction. The punching position setting unit sets a punching position corresponding to a hole to be punched by the punching unit in the orthogonal direction, on the basis of an amount of change in the orthogonal direction between the two edge positions. The punching controlling unit causes the punching unit to move to the punching position and punch a hole in the sheet.

The problem of penetrating through nets and other objects is solved by cutting the object using various cutter systems, which include, for example a track and a moving carriage containing a cutter, a stationary carriage with a fixed or rotating arm, and/or abrasive cutters. The object is cut by a severing, slicing, or wearing action caused by a moveable blade or abrasive surface. An underwater vehicle incorporating an embodiment of the cutter system can cut a sufficiently large opening in the object to allow the vehicle to pass through.