TH77359A - Methods of producing fine fibers - Google Patents

Abstract

DC60 (20/10/47) A method for producing ultra-fine low-tension yarn (LOY's). From polyester For further processing To a short fiber through the manipulation of the spin Which consists of - at least one spin pack (2) with a (3) spinnerate plate with a small hole arranged in a ring for the melt yarn to come out, - a radial symmetrical cooling system ( 4,5) in which the yarn inside will be Cooled by cooling gas That were directed from the outside to the inside Compared to Bundle of yarn, and -application (6) for the application of a preparation medium to a bundle of long fibers (9), in which (a) the melt is fed to the spinpack (2) and It is extruded from 7500 to 14,250 small holes in the spinneret plate in the form of molten yarn (9), (b). Ring surface There is a small hole at the solution for the melt, which appears at the density of between 8 and 28 small holes per square centimeter of spinnerate area, (c) hydraulic diameter. Of each spinner hole's small hole It is selected so that it is between 0.13 and 0.24 mm per small hole, (d) the cooled thread. Is fed across the gaps in the application machine (6) of the annular preparation medium. Where the gap is directed towards the inner loop and where the applicator is positioned 650 to 1200 mm from the bottom of the spinneret plate, and the media mixture. Of preparation / water Will be measured through a meter on a bundle of yarn through a gap Where the diameter of the bundle of threads will be narrowed into place Application machine In such a way that the connection lines are straight from the small holes of Spinner rate to band Which yarn touches the machine This creates an angle between 1.5 degrees and 9 degrees with the vertical line. Perpendicular to the application, (e) the bundle of yarn being prepared It is pulled via at least one godet roller driven at speeds between 800 and 1550 m / min, and (f) each thread. There will be a tie between 1.5 and 4 denier and at least 300% elongation at break, but suitable 310 to 500%. Methods for producing finely spun-bonded yarn (LOY's). From polyester For further processing To a short fiber through the manipulation of the spin Which consists of - at least one spin pack (2) with a (3) spinnerate plate with a small hole arranged in a ring for the melt yarn to come out, - a radial symmetrical cooling system ( 4,5) in which the yarn inside will be Cooled by cooling gas That were directed from the outside to the inside Compared to Bundle of yarn, and -application (6) for the application of a preparation medium to a bundle of long fibers (9), in which (a) the melt is fed to the spinpack (2) and It is extruded from 7500 to 14,250 holes in the spinneret plate in the form of molten yarn (9), (b) .The melt wetted the ring surface of the spinneret plates on the source side by At the surface of the ring There is a small hole at the solution for the melt, which appears at the density of between 8 and 28 small holes per square centimeter of the spinnerate area, (c) hydraulic diameter. Of each spinner hole's small hole It is selected so that it is between 0.13 and 0.24 mm per small hole, (d) the cooled thread. Is fed across the gaps in the application machine (6) of the annular preparation medium. Where the gap is directed towards the inner loop and where the applicator is positioned 650 to 1200 mm from the bottom of the spinneret plate, and the media mixture. Of preparation / water Will be measured through a meter on a bundle of yarn through a gap Where the diameter of the bundle of threads will be narrowed into place Application machine In such a way that the connection lines are straight from the small holes of Spinner rate to band Which yarn touches the machine This creates an angle between 1.5 ํ and 9 ํ with the vertical line. Perpendicular to the application, (e) the bundle of yarn being prepared It is pulled via at least one godet roller driven at speeds between 800 and 1550 m / min, and (f) each thread. There will be a tie between 1.5 and 4 denier and at least 300% elongation at break, but a reasonable 310 to 500%.

Claims (1)

: DC60 (20/10/47) A method of producing fine melt spun low draw yarns (LOY's) from polyesters for further processing into staple fibers through a spinning arrangement comprising - at least one spin pack (2) having a spinneret plate (3) having holes arranged in a ring for the ejection of the melt yarn, - a radially symmetrical cooling system (4,5) within which the yarn is cooled by a cooling gas directed from the outside towards the inside, as opposed to - a helical gear (3) through which the yarn is cooled by a helical gear (4,5) directed from the outside towards the inside, as shown in the figure. Yarn bundles, and -application apparatus (6) for the application of the preparation medium to the bundles of filaments (9), in which (a) the melt is fed into a spin pack (2) and extruded from 7500 to 14250 holes in the spinneret plate in the form of melted yarn (9), (b) the melt wets the annular surface of the spinneret plate on the upstream side, where the annular surface has outlet holes for the melt, which appear at a hole density of between 8 and 28 holes per square centimeter of spinneret area, (c) the hydraulic diameter of each spinneret hole is chosen so as to be between 0.13 and 0.24 mm per hole, (d) the cooled yarn is fed across the gap in the application apparatus (6) of the annular preparation medium. in which the gap is directed towards the inner ring and the applicator is arranged 650 to 1200 mm from the bottom of the spinneret plate, and the preparation medium/water mixture is measured through a meter onto the bundle of yarn through the gap, whereby the diameter of the bundle of yarn is shrunk into the applicator in such a way that a straight line connection from the small hole of the spinneret to the ring where the yarn contacts the applicator forms an angle between 1.5° and 9° with the vertical perpendicular to the applicator, (e) the bundle of yarn to be prepared is drawn through at least one speed-controlled roller (godet) driven at a speed between 800 and 1550 m/min, and (f) each yarn has a titer between 1.5 and 4 denier and an elongation at break of at least 300%, but preferably 310 to 500%. Methods of producing fine melt spun LOY's. From polyester for further processing to staple fibers through a spinning arrangement comprising - at least one spin pack (2) having a spinneret plate (3) having small holes arranged in a ring for the ejection of the melted yarn, - a radially symmetrical cooling system (4,5) inside which the yarn is cooled by a cooling gas directed from outside to inside with respect to the yarn bundle, and - an applicator (6) for the application of the preparation medium to the bundle of staple fibers (9), in which (a) the melt is fed to the spin pack (2) and extruded from 7500 to 14250 small holes in the spinneret plate in the form of melted yarn (9), (b) the melt impregnates the annular surface of the spinneret plate on the upstream side, whereby the annular surface There shall be outlet holes for the melt, which shall be present at a hole density between 8 and 28 holes per cm2 of spinneret area, (c) the hydraulic diameter of each spinneret hole shall be chosen so as to be between 0.13 and 0.24 mm per hole, (d) the cooled yarn is fed across a gap in the applicator (6) of the preparation medium in a ring, the gap being directed towards the inner ring and the applicator being arranged 650 to 1200 mm from the bottom of the spinneret plate, and the preparation medium/water mixture is measured through a meter onto the bundle of yarn through the gap, where the diameter of the bundle of yarn is shrunk into the applicator in such a way that a straight line connection from the spinneret hole to the loop where the yarn contacts the applicator forms an angle between 1.5° and 9° with the vertical line. (e) the bundle of yarns to be prepared is drawn through at least one godet driven roller at a speed between 800 and 1550 m/min, and (f) each yarn has a titer between 1.5 and 4 denier and an elongation at break of at least 300%, but preferably 310 to 500%. Claim (1) which appears on the advertising page: 1. A method of producing fine melt spun low draw yarns (LOY's) from polyesters for further processing into staple fibers through a spinning arrangement comprising - at least one spin pack (2) having a spinneret plate (3) having holes arranged in a ring for the melt yarn to be ejected.&nbTags :