Disclosed are biaxially stretched polyolefin films containing a) 10 to 45% by weight of a cycloolefin polymer with a glass transition temperature between 120 and 170 C., and b) 90 to 55% by weight of a semi-crystalline alpha-olefin polymer with a crystallite melting temperature between 150 and 170 C., wherein the glass transition temperature of component a) being less than or equal to the crystallite melting temperature of component b), and wherein the polyolefin film has a shrinkage at 130 C. after 5 minutes, as measured according to ISO 11501, of less than or equal to 2%. These polyolefin films are excellent suited as dielectrics for capacitors but also for other applications and are distinguished by a low shrinkage at high temperatures.

A method for producing a seat cushion includes a molten filament supplying step of discharging a plurality of molten filaments of a thermoplastic resin or the like downward in a thermal vertical direction from a plurality of nozzle holes, a three-dimensional filaments fused body forming step of fusion-bonding contact points between the plurality of molten filaments while three-dimensionally entangling the molten filaments to form a three-dimensional filaments fused body, and a three-dimensional filaments-linked structure forming step of cooling and solidifying the three-dimensional filaments fused body while drawing the three-dimensional filaments fused body with an underwater drawing machine provided in cooling water to thereby form a three-dimensional filaments-linked structure, the three-dimensional filaments-linked structure forming step includes a three-dimensional filaments-linked structure density controlling step of controlling a density of the three-dimensional filaments fused body by varying a drawing speed of the underwater drawing machine.

A method for producing a seat cushion includes a molten filament supplying step of discharging a plurality of molten filaments of a thermoplastic resin or the like downward in a thermal vertical direction from a plurality of nozzle holes, a three-dimensional filaments fused body forming step of fusion-bonding contact points between the plurality of molten filaments while three-dimensionally entangling the molten filaments to form a three-dimensional filaments fused body, and a three-dimensional filaments-linked structure forming step of cooling and solidifying the three-dimensional filaments fused body while drawing the three-dimensional filaments fused body with an underwater drawing machine provided in cooling water to thereby form a three-dimensional filaments-linked structure, the three-dimensional filaments-linked structure forming step includes a three-dimensional filaments-linked structure density controlling step of controlling a density of the three-dimensional filaments fused body by varying a drawing speed of the underwater drawing machine.

A method and an extrusion or pultrusion device for forming a profile product made from a material in a production direction, said device comprising a rotating die, extending in a radial direction and a width direction, having two opposite first and second side walls and an outer circumferential surface extending in the width direction therebetween, wherein the rotating die comprises a first side portion in connection to the first side wall and a second side portion in connection to the second side wall and a mid-portion extending between the first and second side portions, and a profile definition zone having a longitudinal direction coinciding with the production direction, a height direction and a width direction being perpendicular to the height direction, comprising a through channel comprising a first channel section followed by a second channel section downstream the first channel section with reference to the production direction, wherein the rotating die is rotatable about an axis extending across the production direction and arranged to allow the outer circumferential surface to, while the rotating die rotates, exert a pressure onto a surface of the material when fed through the profile definition zone.

Methods, systems, and devices for changing cross-sectional sizes and/or shapes of flat braided sutures and the resulting constructs are disclosed. The flat braided sutures can have a textile first cross-sectional shape that can be changed to a textile second cross-sectional shape. The systems can have a heater and a die. The flat braided sutures can be movable through the heater and the die. When the flat braided sutures are in the heater, the flat braided sutures can be heatable from a textile first temperature to a textile second temperature greater than the textile first temperature. When the flat braided sutures are at the textile second temperature, the textile first cross-sectional shape can be changeable to the textile second cross-sectional shape.

Methods, systems, and devices for changing cross-sectional sizes and/or shapes of flat braided sutures and the resulting constructs are disclosed. The flat braided sutures can have a textile first cross-sectional shape that can be changed to a textile second cross-sectional shape. The systems can have a heater and a die. The flat braided sutures can be movable through the heater and the die. When the flat braided sutures are in the heater, the flat braided sutures can be heatable from a textile first temperature to a textile second temperature greater than the textile first temperature. When the flat braided sutures are at the textile second temperature, the textile first cross-sectional shape can be changeable to the textile second cross-sectional shape.