The present disclosure relates to a heat shrinkable wrap comprising a body comprising two longitudinal edges and two transverse edges; a first locking feature which expands along a first longitudinal edge and a second locking feature which expands along a second longitudinal edge; wherein the body comprises a heat shrink material; wherein the first locking feature at the first longitudinal edge comprises at least two first locking elements which expand along the first longitudinal edge and the second locking feature at the second longitudinal edge 8, 80 comprises at least two second locking elements which expand along the second longitudinal edge; wherein the first locking elements and the second locking elements are adapted for engaging with each other, for establishing, in an engaged state, at least two connections between the first locking feature and the second locking feature; wherein, when the connection between the first locking feature and the second locking feature is established, the body and the locking features form a tubular structure.

In various examples, the subject matter of this disclosure relates to heat-shrinkable films and systems and methods for manufacturing and recycling heat-shrinkable films. A heat-shrinkable film can include: a first layer having a first copolymerized polyester resin; and a second layer disposed on the first layer and having a second copolymerized polyester resin, wherein the heat-shrinkable film is predisposed to either (i) curl towards the first layer when heat is applied or (ii) not curl towards the second layer when heat is applied. A layer of ink can be disposed on the second layer.

A heat shrink tubing, which can be readily peeled in the longitudinal direction after use (e.g., to remove the heat shrink tubing from an underlying material) is provided herein. The heat shrink tubing can be of various compositions, and generally is produced from at least one fluorinated, copolymeric resin. The tubing can exhibit desirable physical properties such as good optical clarity (e.g., translucency or transparency) and/or peelability, exhibiting one or more of complete, straight, and even peeling along a given length of tubing.

The invention provides a roll of a white heat-shrinkable polyester-based film containing titanium oxide which can suppress occurrence of a processing trouble of a label or the like cut out from the roll, even when widening the roll. The roll of the white heat-shrinkable polyester-based film satisfies the following requirements: (1) the length of the film is 1,000-20,000 m and the width of the film is 400-10,000 mm, (2) the heat-shrinkage ratio in a main shrinkage direction is 50-85%, (3,4) the difference between the maximum and minimum heat-shrinkage ratio in the main shrinkage direction is 0-3% among samples which are sampled in each of the width and longitudinal directions of the film, and (5,6) the difference between the maximum and minimum apparent specific gravity is 0-0.01 g/cm.sup.3 among samples which are sampled in each of the width and longitudinal directions of the film.

Curved heat shrink tubing and methods of making the same are described herein. An example method includes inserting heat shrink tubing into a tube, curving the tube, and deforming the heat shrink tubing, inside of the tube, to have a curved shape along a length of the heat shrink tubing where a first length of the heat shrink tubing along an outer radius of the curved shape is longer than a second length of the heat shrink tubing along an inner radius of the curved shape.

Presented is a method for making a flexible container. The method implements an injection mold having a collapsible core that expands/moves to define the apertures and, in some embodiments, holds a flexible film in place during the injection mold process and collapses/moves back post-injection molding to allow for the flexible container to be readily removed from the die. In addition, the method described includes a post-injection molding anneal process that is implemented to allow the flexible film to shrink so as to provide for the form-fitting of the film to the molded portion of the container.

An oral-care implement including a filament comprising an external material and at least a first internal material. The filament includes an elongated flexible body having a length, a longitudinal axis, and a longitudinal outer surface comprising the external material, the elongated body terminating with a tip having a tip surface comprising the external material, wherein the tip surface has therein a plurality of craters distributed throughout the tip surface in a predetermined pattern, each of the craters having a surface edge of a predetermined size and a predetermined shape, walls extending longitudinally from the surface edge and comprising the external material, and a bottom comprising the at least first internal material and situated at a depth from the surface edge, the surface edge being formed by the walls and the tip surface.

A heat-shrinkable polyester-based film is provided, which is heat-shrinkable in the longitudinal direction and which is freed from various problems, particularly curling-up or peeling in a bonded area. The heat-shrinkable polyester-based film is characterized by an A1/A2 (absorbance) ratio in the longitudinal direction, which is the main shrinking direction of the film, of 0.55 to 1, with an A1/A2 ratio in the width direction perpendicular to the main shrinking direction of 0.5 to 0.9, wherein A1 is the absorbance of the film at 1340 cm.sup.1 and A2 is the absorbance of the film at 1410 cm.sup.1 as determined by polarized ATR-FTIR spectroscopy, and a hot-water shrinkage of 35 to 60% in the longitudinal direction of the film and 3 to 12% in the width direction of the film, wherein the hot-water shrinkage is determined by dipping the film in hot water at 90 C. for 10 seconds.

A portable device for attaching a connector to an optical fiber, the optical fiber having an end, the device comprising means for receiving the optical fiber at the end of the optical fiber; and a connector station for autonomously attaching the connector to the optical fiber.

This invention relates to processes for collation shrink packaging of one or more items with a thermally insulating film, to films for such processes, to packages so made, and to methods for extruding such films. The one or more items packaged may be cans, bottles, pouches and other carriers of liquid or solids.