A water-soluble film includes a polyvinyl alcohol resin (A) as a main component, wherein the ratio (X.sub.TD/X.sub.MD) of a degree of elongation (X.sub.TD) in the transverse direction (TD) of the water-soluble film to a degree of elongation (X.sub.MD) in the machine direction (MD) thereof when the water-soluble film is floated on the surface of water at 20° C. for 60 seconds is from 1.05 to 1.5. The water-soluble film exhibits reduced curling, exhibits reduced positional shift, and shows satisfactory sealability while forming a package.

A polyimide precursor solution is disclosed, and a colorless transparent polyimide film manufactured from the polyimide precursor solution. The polyimide precursor solution has diamines, a first dianhydride represented by biphenyl dianhydride, a second dianhydride represented by rigid alicyclic dianhydride, a third dianhydride represented by non-alicyclic dianhydrides and organic solvent. The colorless polyimide films have a modulus of 4.5 GPa or higher, a glass-transition temperature (T.sub.g) of 370° C. or higher, and a yellow index of 3.0 or lower. These polyimide films can be used as substrates for thin film transistor (TFT), touch sensor panel (TSP), and cover window applications in flexible display such as organic light-emitting diode (OLED), flexible liquid crystal display (LCD) and other fields.

The present invention relates to a method for manufacturing polylactide-based articles by rotational molding and also to the articles obtained by the method.

The present invention relates to a method for manufacturing polylactide-based articles by rotational molding and also to the articles obtained by the method.

The technical solution relates to the field of processing polymers and can be used in various branches of the national economy for manufacturing hollow articles of the bodies-of-revolution type (tubes), and in particular for manufacturing semifinished biodegradable polymeric stents which are usable in medicine for replacing hollow organs, for example blood vessels. The apparatus for manufacturing thin-walled bodies of revolution comprises a heatable expander which is mounted rotatably about a longitudinal axis, and a feeder for supplying mouldable material, said feeder being mounted above the expander so as to be movable therealong, wherein the lower part of the feeder is heatable, the expander is hollow with a reflective internal surface, and the heater of the expander is in the form of a laser, the radiation of which is transported into the expander. The use of the apparatus will make it possible to reduce the thermal action on a polymer when producing semi-finished articles with defined geometrical dimensions from polymeric materials.

The technical solution relates to the field of processing polymers and can be used in various branches of the national economy for manufacturing hollow articles of the bodies-of-revolution type (tubes), and in particular for manufacturing semifinished biodegradable polymeric stents which are usable in medicine for replacing hollow organs, for example blood vessels. The apparatus for manufacturing thin-walled bodies of revolution comprises a heatable expander which is mounted rotatably about a longitudinal axis, and a feeder for supplying mouldable material, said feeder being mounted above the expander so as to be movable therealong, wherein the lower part of the feeder is heatable, the expander is hollow with a reflective internal surface, and the heater of the expander is in the form of a laser, the radiation of which is transported into the expander. The use of the apparatus will make it possible to reduce the thermal action on a polymer when producing semi-finished articles with defined geometrical dimensions from polymeric materials.

Methods for making inflatable interior panel arrangements for motor vehicles are provided. In one example, a method for making inflatable interior panel arrangement for a motor vehicle includes introducing a molding material into a molding tool that has tooling surfaces. The molding material is contacted with a first tooling surface of the tooling surfaces having a tooling surface temperature different than tooling surface tempe. The molding tool is closed such that the tooling surfaces define a substantially enclosed cavity in the molding tool. An inflatable interior panel is formed comprising rotating the molding tool to cover the tooling surfaces of the substantially enclosed cavity with the molding material. The inflatable interior panel comprises an inflatable bladder section and an outer panel section that is integrally coupled to the inflatable bladder section and that has a panel portion stiffness greater than a bladder portion stiffness of the inflatable bladder section.

Methods for making inflatable interior panel arrangements for motor vehicles are provided. In one example, a method for making inflatable interior panel arrangement for a motor vehicle includes introducing a molding material into a molding tool that has tooling surfaces. The molding material is contacted with a first tooling surface of the tooling surfaces having a tooling surface temperature different than tooling surface tempe. The molding tool is closed such that the tooling surfaces define a substantially enclosed cavity in the molding tool. An inflatable interior panel is formed comprising rotating the molding tool to cover the tooling surfaces of the substantially enclosed cavity with the molding material. The inflatable interior panel comprises an inflatable bladder section and an outer panel section that is integrally coupled to the inflatable bladder section and that has a panel portion stiffness greater than a bladder portion stiffness of the inflatable bladder section.

A rotomoulded product and a method of making a rotomoulded product via rotational moulding, the rotomoulded product including at least two layers of material that form a wall of the product, at least one of the layers including post-consumer recyclate (PCR), and at least one of the layers including virgin PE.

A rotomoulded product and a method of making a rotomoulded product via rotational moulding, the rotomoulded product including at least two layers of material that form a wall of the product, at least one of the layers including post-consumer recyclate (PCR), and at least one of the layers including virgin PE.