A heat shrinkable tube has a hollow tubular shape and includes an outer peripheral surface, an inner peripheral surface, and a plurality of protruded portions provided on the inner peripheral surface and extending in directions intersecting with each other.

A heat shrinkable tube has a hollow tubular shape and includes an outer peripheral surface, an inner peripheral surface, and a plurality of protruded portions provided on the inner peripheral surface and extending in directions intersecting with each other.

Variably porous panels and panel assemblies incorporating shape memory alloy components along with methods for actuating the shape memory alloys are disclosed to predictably alter the porosity of a substrate surface, with the shape memory alloy maintained in an orientation relative to the panel that is in-plane with a mold-line of the panel outer surface.

Disclosed is a joining element (10), especially a suture material for surgical use. The joining element (10) is composed of a first material (12) that is essentially rigid during impingement by a relatively short-lasting tensile load on opposite sides as well as a second material (11) which is connected to the first material. The second material is substantially rigid during impingement by said tensile load on opposite sides while contracting slowly during a second period of time that is longer than the first period of time.

Origami- and Kirigami-inspired assembly of predetermined three-dimensional forms is presented in comprehensive theoretical and experimental studies, with examples of a broad range of topologies and material compositions. The resulting engineering options in the construction of functional 3D structures have important implications for advanced microsystem technologies.

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.

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.

A method of producing nanoscale features on a pre-stressed polymer film is described herein. The method includes: imprinting the pre-stressed polymer film with a nanoscale or microscale pattern; constraining the pre-stressed polymer film in a first direction with a first constraint; shrinking the pre-stressed polymer film in a second direction with a first heat treatment process; releasing the first uniaxial constraint; constraining the pre-stressed polymer film in a third direction with a second constraint, the third direction being different than the first direction; shrinking the pre-stressed polymer film in a fourth direction with a second heat treatment process; and releasing the second constraint to produce the nanoscale features on the pre-stressed polymer film.

A method of producing nanoscale features on a pre-stressed polymer film is described herein. The method includes: imprinting the pre-stressed polymer film with a nanoscale or microscale pattern; constraining the pre-stressed polymer film in a first direction with a first constraint; shrinking the pre-stressed polymer film in a second direction with a first heat treatment process; releasing the first uniaxial constraint; constraining the pre-stressed polymer film in a third direction with a second constraint, the third direction being different than the first direction; shrinking the pre-stressed polymer film in a fourth direction with a second heat treatment process; and releasing the second constraint to produce the nanoscale features on the pre-stressed polymer film.

A device for moulding at least one bladed part of a turbine engine, including a base; a mould formed from a plurality of parts nested inside one another, this mould being applied to the base. A first seal is mounted between the mould and the base; and a bell is mounted on the mould and around the mould, this bell being applied to the base. A second seal is mounted between the bell and the base, this bell being configured to be held tight against the base and having interior surfaces engaging by wedge effect with complementary exterior surfaces of the mould in order to apply a clamping force on the parts of this mould.