The present invention discloses a method of producing at least a pair of interlocking adjacent layers of a paper packaging product, the pair of interlocking adjacent layers being formed of a sheet of slit paper having a slit pattern, the slit pattern upon expansion, forming cells that include land regions that are inclined with respect to a plane of an unexpanded sheet. The method comprises slitting the sheet of slit paper with beveled blades that have a first wedge angle on one side of the blades and a second wedge angle on the other side of the blades, wherein the first wedge angle is wider than the second wedge angle to produce slits that upon expansion, produce the lands regions that have angles of inclination in a range for 50 to 85 degrees.

A cutting die for rotary die-cutting of a label laminates is described herein. The cutting tools of the die include at least one of the following cutting edge parameters: effective height, shape and bevel angle arranged to be different in a first direction when compared to a second direction of the cutting die. The use of the cutting die, a method for designing a cutting die and a method for die-cutting a label laminate are also described.

The invention relates to a ultrasonic cutter for the cutting of edge chamfers of plate-shaped workpieces, having a cutter head (1) which forms an axis of rotation (6) and having a blade (2), which extends from the cutter head (1) and forms a cutting wedge, terminating in a straight cutting edge (5), between flank and contact faces (3, 4) determined by the wedge angle. In order to create advantageous structural conditions, it is proposed that the axis of rotation (6) extending on the blade side of the flank face (3) is at a distance (e) from the flank face (3) which is equal to or greater than the distance (s) of the centre of mass (S) of the blade (2) from the flank face (3), and that the cutting edge (5) extending in the direction of the axis of rotation (6) extends at a distance (a) from the axis of rotation (6) which corresponds at most to the blade thickness (d).

A chemically etched needle is provided herein. The chemically etched needle includes a metal base having a first side and a second side. The chemically etched needle also includes a chemically etched blade at one end of the metal base and formed at an intersection of a distal diverging surface and a proximal diverging surface, at least one of the diverging surfaces slopes inward towards the second side.

Systems and methods related to cutting electrodes (e.g. lithium metal) and electrode precursors are generally provided. The electrodes or electrode precursors may involve, for example, a lithium metal electrode or a lithium composite electrode, e.g., for use in an electrochemical cell or battery.

A process and system provides for atraumatic preparation of morcelized Tissue Particles (MTPs), such as Full Thickness Skin Graft Particles (FTSGPs), cartilage particles and other organ tissue particles, in a liquid medium. The resultant tissue product may be a suspension of Tissue Particles in an aqueous solution and containing highly viable cells and may be rapidly prepared at bedside or in the operating room and conveniently delivered to a patient through a syringe or similar applicator. The MTPs may be used for surgical applications including wound healing, cosmetic surgery, and orthopedic cartilage repairs.

The grinding unit includes at least one grinding wheel adapted to rotate around a respective rotation axis, and a thrust actuator adapted to push the grinding wheel against a cutting edge of a disc-shaped cutting blade. A load cell is also provided for detecting an axial thrust exerted on the grinding wheel.

A cutting blade has two ends and two sides and includes a mounting hole mounted on a front housing of a brush cutter; a convex member on a central portion of either side and having two notches at two ends respectively and an intermediate, curved cutting edge; and two cutting edges on either side with the convex member disposed between, each cutting edge having a first end terminated at the notch and a second end terminated at either end. Two cutting edges of different sides with the mounting hole disposed between comprise a plurality of groups of an outward inclined cutting member and a cavity. The other two cutting edges of different sides with the mounting hole disposed between comprise a plurality of groups of an inward inclined cutting member and a recess.

A helicoidal blade system is presented having an armature to facilitate bending of metal stock to form helicoidal blades. In one or more embodiments, the armature has an exterior surface that is generally conical in shape and includes a guide structure and an engagement track. The helicoidal blade system also includes drive coupler and motor that are operably coupled together. The drive coupler is configured to engage the engagement track of the conical armature and rotate the conical armature when the motor is operated. A blade metal feed apparatus is configured to feed the metal stock into the helical shaped guide structure as the conical armature is rotated. As the conical armature is rotated, the metal stock is bent around the armature within the helical shaped guide structure to form one or more helicoidal blades.

Building panels provided with a locking system for vertical and horizontal locking of a first edge and a second edge of adjacent panels. The locking system includes a displaceable tongue at least partly arranged in a displacement groove, a tongue groove, a cavity provided in a strip at the first edge, and a protrusion extending downwards at the second edge. The displaceable tongue is arranged to be displaced at least partly into the tongue groove during locking, and wherein the protrusion is arranged to be located in least a portion of the cavity when the panels are locked vertically and horizontally.