摘要:
The invention relates to a method for the production and winding of pre-oriented polyester filaments, comprising at least 90 wt. %, based on the total weight of polyester filament, polybutylene terephthalate (PBT) and/or polytrimethylene terephthalate (PTMT), preferably PTMT, characterised in that a) the spinning draft is set in the range 70 to 500, b) directly after exiting the spinning nozzle, the filaments run through a cooling delay zone of 30 mm to 200 mm in length, c) the filaments are cooled to below the solidification temperature, d) the filaments are bundled at a separation of between 500 mm and 2500 mm from the bottom face of the nozzle, e) the thread tension, before and between the drawing galettes is set to between 0.05 cN/dtex and 0.20 cN/dtex, f) the threads are wound with a thread tension of between 0.025 cN/dtex and 0.15 cN/dtex, g) the winding speed is set to between 2200 m/min and 6000 m/min and h) a polyester is used with 0.05 wt. % to 2.5 wt. %, based on the total weight of the filament, of added additive polymer as extensibility improver.
摘要:
The invention relates to a method for producing synthetic fibres from a melt blend that is based on fibre-forming matrix polymers. According to said method, at least one second amorphous additive polymer is added to the fibre-forming matrix polymers, said additive polymer being incompatible with the fibre-forming matrix polymer, in a quantity of 0.05 to 5 wt.- %, relative to the combined total weight of fibre-forming matrix polymer and the additive polymer with which it is incompatible. The method is characterized in that an additive polymer, which can be obtained by multiple initiation, is added. The invention also relates to synthetic fibres obtained by said method and to the further processing of the same.
摘要:
The invention relates to a method for producing synthetic fibres from a melt blend that is based on fibre-forming matrix polymers. According to said method, at least one second amorphous additive polymer is added to the fibre-forming matrix polymers, said additive polymer being incompatible with the fibre-forming matrix polymer, in a quantity of 0.05 to 5 wt.- %, relative to the combined total weight of fibre-forming matrix polymer and the additive polymer with which it is incompatible. The method is characterized in that an additive polymer, which can be obtained by multiple initiation, is added. The invention also relates to synthetic fibres obtained by said method and to the further processing of the same.
摘要:
The synthetic threads are produced from a polymer mixture consisting of polyamide, which serves as a base polymer, and of at least one additive polymer, whereby the polymer mixture, provided in the form of a polymer melt, is forced through nozzle openings with injection velocities (s) ranging from 18 to 160 m/min. The filaments formed in this manner are cooled, whereby they combine to form threads, which are then drawn off and wound while forming at least one thread spool. The content of additive polymer in the polymer mixture is a minimum of M wt. % and a maximum of 2.5 wt. %, whereby M results from 0.001 . v - 0.4, v being the draw-off velocity of the thread, whereby v ranges from 4,500 to 8,000 m/min. The additive polymer is amorphous and is practically insoluble in the polymer melt. When the thread is in a wounded state, the additive polymer in the base polymer exists with a fibril structure, and the ratio s: v ranges from 1: 50 to 1: 250. After winding, the thread spool preferably has a wound thread weight of at least 4 kg.
摘要:
The synthetic threads are produced from a polymer mixture consisting of polyamide, which serves as a base polymer, and of at least one additive polymer, whereby the polymer mixture, provided in the form of a polymer melt, is forced through nozzle openings with injection velocities (s) ranging from 18 to 160 m/min. The filaments formed in this manner are cooled, whereby they combine to form threads, which are then drawn off and wound while forming at least one thread spool. The content of additive polymer in the polymer mixture is a minimum of M wt. % and a maximum of 2.5 wt. %, whereby M results from 0.001 . v - 0.4, v being the draw-off velocity of the thread, whereby v ranges from 4,500 to 8,000 m/min. The additive polymer is amorphous and is practically insoluble in the polymer melt. When the thread is in a wounded state, the additive polymer in the base polymer exists with a fibril structure, and the ratio s: v ranges from 1: 50 to 1: 250. After winding, the thread spool preferably has a wound thread weight of at least 4 kg.
摘要:
The invention relates to an elongation-increasing agent which can be processed in an amorphous and thermoplastic manner, is made of radically polymerized, vinylic monomers, and is used for producing synthetic threads from a melt-spinnable fiber-forming matrix polymer that is incompatible with the elongation-increasing agent. The invention is characterized in that the elongation-increasing agent is thermally stabilized by adding an antioxidant substance such that said elongation-increasing agent is provided with a maximum total monomer content of 6 percent by weight after being thermally loaded at 290 °C for 30 minutes in an argon atmosphere. The invention further relates to granular plastic materials containing said elongation-increasing agent and a method for the production thereof. Also disclosed is a method for producing synthetic threads from a polymer mixture of a melt-spinnable, fiber-forming matrix polymer and an elongation-increasing agent in a melt-spinning process, and the subsequent use of said synthetic threads.
摘要:
The invention relates to a method for production and winding of pre-oriented, non-crystalline filaments, comprising at least 90 wt. % PET, based on the total weight of the filaments, with a spinning draw speed of greater than 3800 m/min.
摘要:
The invention relates to a method for the production and winding of pre-oriented polyester filaments, comprising at least 90 wt. %, based on the total weight of polyester filament, polybutylene terephthalate (PBT) and/or polytrimethylene terephthalate (PTMT), preferably PTMT, characterised in that a) the spinning draft is set in the range 70 to 500, b) directly after exiting the spinning nozzle, the filaments run through a cooling delay zone of 30 mm to 200 mm in length, c) the filaments are cooled to below the solidification temperature, d) the filaments are bundled at a separation of between 500 mm and 2500 mm from the bottom face of the nozzle, e) the thread tension, before and between the drawing galettes is set to between 0.05 cN/dtex and 0.20 cN/dtex, f) the threads are wound with a thread tension of between 0.025 cN/dtex and 0.15 cN/dtex and g) the winding speed is set to between 2200 m/min and 3500 m/min.