Apparatus for subdividing a running web into narrower webs has a counterknife which is driven to rotate about a substantially horizontal axis. A second knife is freely rotatably mounted in a holder at a level above the counterknife. The holder is carried by the lower end of a vertically movable and turnable rod-like guide which can be moved up and down by a single-acting fluid-operated motor in cooperation with two springs or sets of springs. When the guide reaches its lower end position, the mo...

A crosscutting device for webs of material, particularly textile webs includes a web feed with a web buffer arranged on a common frame with the cutting station, a cutting station with a rotating disk cutter, driven transport nippers and a tray for stacking the cut material, the rotating disk cutter being automatically moved back and forth across the web by means of a disengageable belt in one of the operating modes and in a second operating mode the disk cutter being movable manually across the ...

A barrier web comprising a fabric that has been treated with a curable shear thinned thixotropic polymer composition, the fabric being adapted to be substantially impermeable to liquids, permeable to gases and impermeable to microorganisms. The barrier webs of the present invention are either impermeable to all microorganisms or are impermeable to microorganisms of certain sizes. The present invention also includes fabrics that are capable of either selectively binding certain microorganisms, pa...

A carrier web having at least one surface that is multiple, sequentially embossed, wherein depressions created from the prior embossing patterns(s) are preserved during the subsequent embossing pattern(s) even though the subsequent embossing pattern(s) are superimposed on the depressions from the prior embossing pattern(s). The patterns of embossing can be Euclidean or fractal created from machine tools produced using microreplication and other techniques. The carrier webs are useful for release...

An apparatus and method for joining webs has clamp assemblage which includes a pair of clamp members for securing and moving a trailing end of an expiring web into a spaced relations with the leading end of a fresh web. An actuator moves the clamp members securing the expiring web along guide rails to a predetermined position for setting the gap width between the ends of web.

Apparatus and method for aligning webs, such as photographic film or paper, where the trailing edge of an expiring web is spliced to the lead edge of a fresh web. A supporting means having the fresh web thereon in a fixed position is caused to move by sensor means transmitting a signal corresponding to precise positioning of the expiring relative to the fixed position of the fresh web. According to the invention, a programmable controller is used to analyze the signals received from the sensors ...

A non-woven fibre web comprising a plurality of first fibres of amorphous silica, said first fibres being orientated in the x-, y- and optionally z-direction, and optionally being bonded with one or more binder substances, characterised in that one or more continuous strands are embedded within the non-woven fibre web, each continuous strand comprising one or more second fibres of amorphous silica, and a method for the manufacture thereof is disclosed. Also disclosed is an ion-conducting membran...

The present invention concerns a method for treating the surface of a fibrous web by mechanical grinding. According to the invention, the grinding is performed at substantially dry state by removing only the higher parts of the paper surface without substantially increasing the density of the web. By reducing the roughness of the surface by a maximum of 90%, the strength properties of the web remain essentially unchanged or they are even improved. Thus, when the roughness of the surface is reduc...

Roll and process of producing roll that includes hard roll core, a resilient covering layer located on an outer side of said hard roll core, and a metallic top layer located on an outside of said resilient covering layer. The metallic top layer includes fibers that include at least one of metal fibers and metal-coated fibers. The process includes applying a resilient covering layer onto an outer side of the hard roll core, and winding a metallic top layer comprising a plurality of fibers of at l...

A high bulk tissue web is made by depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a web, drying the web, winding the dried web to form a plurality of large diameter parent rolls wound on a core, and transporting the parent rolls to an unwind stand having torque transmitting clamping means for engaging opposite end surfaces of the parent rolls. A backing plate is connected to and rotatable with an unwind shaft connected to an electric drive. An inflatable blad...