A method of manufacturing multi-ply separable textured yarn, the method comprising, passing a multi-ply separable interlaced filament yarn through a texturizing unit to form a multi-ply separable draw textured yarn, wherein the multi-ply separable interlaced filament yarn is separable in to at least two separable interlaced filament yarn, wherein the interlacing of the filaments within each separable interlaced filament yarn is retained during further processing of the yarn to fabric and in the fabric.

A method of manufacturing multi-ply separable textured yarn, the method comprising, passing a multi-ply separable interlaced filament yarn through a texturizing unit to form a multi-ply separable draw textured yarn, wherein the multi-ply separable interlaced filament yarn is separable in to at least two separable interlaced filament yarn, wherein the interlacing of the filaments within each separable interlaced filament yarn is retained during further processing of the yarn to fabric and in the fabric.

The present invention is directed to a process for the preparation of a tube with an outer diameter in the range of from 10 m to 250 m consisting of a composition comprising a thermoplastic polyurethane as well as to a tube with an outer diameter in the range of from 10 m to 250 m consisting of a composition comprising a thermoplastic polyurethane obtained or obtainable by the process according to the invention. The invention is further directed to the use of a tube according to the invention as a tube for the transportation of a fluid or as gas membrane tube or as an elastic fiber.

A thermoplastic elastomer-based multifilament yarn and a method of making a thermoplastic elastomer-based multifilament yarn are disclosed. The multifilament yarn comprises a first filament that is at least partially adhered to a second filament. The first filament and the second filament are each formed from a thermoplastic elastomer composition comprising a thermoplastic elastomer that exhibits a flexural modulus of about 300 MPa or less as determined in accordance with ISO 178:2019 at a temperature of about 23 C. The yarn has a linear density of from about 1 to about 500 denier per filament and exhibits an elongation at break of about 300% or more as determined in accordance with ASTM D2653-07 (2018) at a temperature of about 23 C.

A thermoplastic elastomer-based multifilament yarn and a method of making a thermoplastic elastomer-based multifilament yarn are disclosed. The multifilament yarn comprises a first filament that is at least partially adhered to a second filament. The first filament and the second filament are each formed from a thermoplastic elastomer composition comprising a thermoplastic elastomer that exhibits a flexural modulus of about 300 MPa or less as determined in accordance with ISO 178:2019 at a temperature of about 23 C. The yarn has a linear density of from about 1 to about 500 denier per filament and exhibits an elongation at break of about 300% or more as determined in accordance with ASTM D2653-07 (2018) at a temperature of about 23 C.

A thermoplastic copolyester elastomer-based yarn and a method of making a thermoplastic copolyester elastomer-based yarn are disclosed. The yarn comprises a filament that is formed from a thermoplastic copolyester elastomer composition comprising a thermoplastic copolyester elastomer containing hard segments and soft segments. The thermoplastic copolyester elastomer exhibits a flexural modulus of about 300 MPa or less as determined in accordance with ISO 178:2019 at a temperature of about 23 C. and a melting temperature of from about 100 C. to about 230 C. as determined in accordance with ISO 11357-3:2018. The yarn has a linear density of from about 1 to about 2000 denier per filament and exhibits an elongation at break of about 300% or more as determined in accordance with ASTM D2653-07(2018) at a temperature of about 23 C.

A thermoplastic copolyester elastomer-based yarn and a method of making a thermoplastic copolyester elastomer-based yarn are disclosed. The yarn comprises a filament that is formed from a thermoplastic copolyester elastomer composition comprising a thermoplastic copolyester elastomer containing hard segments and soft segments. The thermoplastic copolyester elastomer exhibits a flexural modulus of about 300 MPa or less as determined in accordance with ISO 178:2019 at a temperature of about 23 C. and a melting temperature of from about 100 C. to about 230 C. as determined in accordance with ISO 11357-3:2018. The yarn has a linear density of from about 1 to about 2000 denier per filament and exhibits an elongation at break of about 300% or more as determined in accordance with ASTM D2653-07(2018) at a temperature of about 23 C.

Techniques for melt spinning and cooling of multifilament polyamide threads are described. The process involves multiple filament bundles spun alongside one another and cooled down separately by streams of cooling air flowing radially from the outside to the inside. Streams of cooling air are produced from a blowing chamber connected to a pressure source. Exhaust gases that occur during the spinning are removed through exhaust openings before the cooling of the filament bundles. An air pressure is set within the blowing chamber in such a way that the exhaust gases in the vicinity of the filament bundles are blown out through the exhaust openings from the inside outwards. A blowing box is assigned a pressure setting means for setting an air pressure within the blowing chamber, by which an air pressure for blowing out the exhaust gases can be set at the exhaust openings of a connection adapter.

Techniques for melt spinning and cooling of multifilament polyamide threads are described. The process involves multiple filament bundles spun alongside one another and cooled down separately by streams of cooling air flowing radially from the outside to the inside. Streams of cooling air are produced from a blowing chamber connected to a pressure source. Exhaust gases that occur during the spinning are removed through exhaust openings before the cooling of the filament bundles. An air pressure is set within the blowing chamber in such a way that the exhaust gases in the vicinity of the filament bundles are blown out through the exhaust openings from the inside outwards. A blowing box is assigned a pressure setting means for setting an air pressure within the blowing chamber, by which an air pressure for blowing out the exhaust gases can be set at the exhaust openings of a connection adapter.

A system for making a nonwoven nonwoven spun-bond or melt-blown fabric has a spinneret for spinning fibers or filaments, a cooler downstream of the spinneret for cooling the spun fibers or filaments, a stretcher downstream of the cooler for stretching the cooled fibers or filaments, and a conveyor downstream of the stretcher. The stretched and cooled fibers or filaments are deposited as a nonwoven web on the conveyor. Sensors measure input parameters at the spinneret, at the cooler, at the stretcher, and/or at at least one diffuser or at the conveyor. An evaluating unit for determining an output parameter from the measured input parameter with respect to a predetermined reference parameter.