It is possible to achieve reduction in the occurrence of tension decrease at fiber bundles in a sheet. A method of manufacturing a tank includes several steps. A feed step is carried out of feeding a sheet including aligned fiber bundles while applying tension to the sheet in the longitudinal directions of the fiber bundles. The method further includes a detection step of detecting a decreased tension part subjected to tension decrease in the sheet being fed and a tension recovery step of compensating for the tension decrease at the decreased tension part by spraying an organic solvent if the decreased tension part is detected in the detection step. The method also includes a winding step of winding the sheet having been fed on a liner.

It is possible to achieve reduction in the occurrence of tension decrease at fiber bundles in a sheet. A method of manufacturing a tank includes several steps. A feed step is carried out of feeding a sheet including aligned fiber bundles while applying tension to the sheet in the longitudinal directions of the fiber bundles. The method further includes a detection step of detecting a decreased tension part subjected to tension decrease in the sheet being fed and a tension recovery step of compensating for the tension decrease at the decreased tension part by spraying an organic solvent if the decreased tension part is detected in the detection step. The method also includes a winding step of winding the sheet having been fed on a liner.

The present invention discloses a method for preparing stable 3D polymer objects with surface micro-nanostructures. The method includes the following steps: Step (1): Synthesizing a thermoset 2D polymer object with surface microstructures. The polymer network contains reversible exchangeable bonds. Step (2): deforming synthesized polymer to an arbitrary desired shape above the reshaping temperature with an external force applied. The permanent reshaping temperature falls in the range of 50-130 C. and external stress is held for 5 min-24 hours Step (3): after cooling, a permanent 3D polymer object with surface microstructure is obtained. Step (2-3) can be repeated for many cycles and the 2D polymer object can be arbitrarily and cumulatively deformed to get a complex 3D structures. The polymer networks contain reversible exchangeable bonds and bond exchange catalysts in the present invention. The method disclosed in present invention is simple and efficient for preparing complex 3D polymer objects with surface micro-nanostructures.

The invention relates to a method of shaping products made of HDPE or PA, particularly spatial shaping of HDPE or PA tubes, in which HDPE or PA semi-finished product is shaped. A semi-finished product from HDPE or PA is first heated to temperature T close to melting temperature T.sub.g of the material so that the material remains in a solid state, T the semi-finished product made of HDPE or PA is left at this temperature for time period t.sub.1 required to obtain plasticity and to disrupt completely or partially the crystalline or semi-crystalline structure of the HDPE or PA material and for relaxing the internal tension of the HDPE or PA material and for restoring the amorphous or partially amorphous state of the material, whereupon the HDPE or PA semi-finished product is inserted into a shaping fixture and the temperature of the HDPE or PA material gradually decreases to ambient temperature.

The invention also relates to a device for performing the method.

A method for forming a heated thermoplastic composite material into a closed profile using a tooling includes a) forming, during a first forming stage, a heated thermoplastic composite in a first space between a male tooling part and a female tooling part, b) forming, during a second forming stage, the thermoplastic composite material by engaging a first segment and/or second segment of the thermoplastic composite material with at least one auxiliary tooling part to thereby bring the first and second segments closer together, and c) forming, during a third forming stage, the thermoplastic composite material by pressing, using a pressing tooling part, the thermoplastic composite material around the male tooling part thereby creating a seam between the first and second segment.

A tooling for deforming a fibrous blank includes at least a first and a second arch extending along a circumferential direction between a first end and a second end, the first ends of the arches being present in a first area and the second ends of the arches being present in a second area, the first end of at least one of the arches having a fixed position along the transverse direction and the second ends of the arches being able to move along the transverse direction, the first and the second arch being intended to be in contact with the surface of the fibrous blank.

Implantable medical constructs formed by winding using winding support structures that can be flexible and can be integrated into the medical construct with biocompatible fiber(s) and/or yarn(s) and at least one continuous length collagen fiber. The implantable medical construct can include open suture anchor apertures formed using posts during a winding sequence.

Example embodiments relate to a manufacturing device of an anti-reflecting structure and a method for manufacturing the anti-reflecting structure. The manufacturing device of an anti-reflecting structure includes a carrier film on which a stamp structure is formed, an unwinding unit which unwinds the carrier film, a substrate support unit which provides a target substrate to the carrier film, a pressing unit which applies pressure to the carrier film so that a resin provided in the stamp structure is provided to the target substrate, and a winding unit which winds the carrier film from which an anti-reflecting pattern is transferred to the target substrate, wherein the pressing unit includes a chamber which stores the target substrate, and a vent hole formed in the chamber, and air within the chamber is discharged through the vent hole to lower the air pressure in the chamber and apply pressure to the carrier film.

In some examples, a catheter comprises an inner liner, an outer jacket, and a structural support member positioned between at least a portion of the inner liner and the outer jacket. The inner liner, the outer jacket, and the structural support member define a catheter body that comprises a proximal portion having a first outer diameter, a distal portion having a second outer diameter less than the first outer diameter, the distal portion including a distal end of the catheter body, and a medial portion positioned between the proximal portion and the distal portion, the medial portion tapering from the first outer diameter to the second outer diameter.

In some examples, a catheter comprises an inner liner, an outer jacket, and a structural support member positioned between at least a portion of the inner liner and the outer jacket. The inner liner, the outer jacket, and the structural support member define a catheter body that comprises a proximal portion having a first outer diameter, a distal portion having a second outer diameter less than the first outer diameter, the distal portion including a distal end of the catheter body, and a medial portion positioned between the proximal portion and the distal portion, the medial portion tapering from the first outer diameter to the second outer diameter.