JP2020033655A - Opened fiber body, apparatus for manufacturing opened fiber body, and method for manufacturing opened fiber body - Google Patents

Abstract

To provide an apparatus for manufacturing an opened fiber body capable of making a required opened fiber article easy to manufacture when manufacturing the opened fiber article using the opened fiber body, and a method of manufacturing.SOLUTION: The apparatus for manufacturing an opened fiber body 1 includes: a plurality of individual conveying paths R1 for individually conveying a plurality of tow bands 7 respectively containing a plurality of crimped cellulose acetate fibers, and conveyed; at least one fiber-opening device 9 for opening a plurality of the cellulose acetate fibers contained in a plurality of the tow bands; and a guiding device 5 for guiding and integrating a plurality of the tow bands passing through a plurality of the individual conveying paths R1 to form an opened fiber body 40.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to an opened body including a crimped cellulose acetate fiber, an opened body manufacturing apparatus, and a method for manufacturing an opened body.

This document uses the following defined terms:
TD: Total fiber degree (total denier), indicating the fiber degree of the tow band (grams per 9000 m).

  FD: Single fiber degree (filament denier), indicating the fiber degree (grams per 9000 m) of a single fiber (one filament). Also referred to as single fiber denier.

  Filament: Refers to a continuous long fiber. Particularly, it refers to a single fiber discharged from a spinning hole of a spinneret.

  Tow band: yarns, which are aggregates of filaments (single fibers) discharged from each spinneret of a plurality of spinning cylinders, are united, a plurality of yarns are united, and TD is set to a predetermined numerical value to be an end. . This end is crimped. This crimped end (filament aggregate) is referred to as a tow band. That is, the tow band has a TD and a number of crimps. The toe band is packed in a bale.

  Cellulose acetate fibers, which are semi-synthetic fibers different from so-called synthesized chemical fibers, are spun by a dry spinning method using, for example, a spinning solution containing cellulose acetate and an organic solvent. The cellulose acetate fibers include, for example, cellulose triacetate fibers and cellulose diacetate fibers. Cellulose triacetate fibers are mainly used for woven or knitted fabrics. Cellulose diacetate fibers are mainly used for cigarette filters.

  When fabrics or knits are manufactured from cellulose acetate fibers, the fibers used in the fabrics or knits may cause a problem such as breakage in the process of fabricating or knitting unless the FD is large to some extent. For this reason, for example, when fabrics or fabrics are manufactured using cellulose acetate fibers, for example, as disclosed in Non-Patent Document 1, 15 or more fibers whose FD is set to a value in the range of 40 or more and 600 or less are used. A fiber bundle configured by bundling the fibers in a range of 600 or less is used. The TD of the fiber bundle is a value in the range of 600 to 360,000 as a calculated value from the number of fibers disclosed in Non-Patent Document 1.

  In the case where a cigarette filter is manufactured using cellulose acetate fibers, for example, an opened body obtained by opening crimped cellulose acetate fibers is used. When producing a cigarette filter, the FD of the fiber contained in the spread body is necessarily set to a relatively small value in order to remove components such as nicotine and tar contained in the smoke. For example, when the filter diameter is set to a value of about 25 mm, the FD of the fiber is set to a value in the range of 3 or more and 4 or less. If the filter diameter is smaller than this, the FD of the fiber is set to a relatively large value to reduce the airflow resistance of the filter as disclosed in Patent Document 1, for example.

  When manufacturing a cigarette filter, the spread body is formed into a rod shape. Therefore, for example, when the FD is set to 3.0, the TD of the tow band serving as the material of the spread body is set to a value of about 30,000. Further, as disclosed in Patent Document 2, for example, a tow band used for a cigarette filter is opened by a gas such as air to adjust a width dimension. At the time of manufacturing the spread body, a plurality of fibers included in the toe band are spread by the spreader while the bale-shaped tow band is transported.

  In addition, the spread body made of a tow band of cellulose acetate fiber is manufactured by applying, for example, a tow band for a cigarette filter, and is used for manufacturing an absorbent article such as a disposable diaper or a pad for preventing urine leakage.

Macromolecular Symposia 208, March 2004, WILEY-VCH, pp.255-265

WO 2016/084120 JP 2014-221960 A

  Here, when manufacturing a cigarette filter, the size of the spreader body that can be used for manufacturing may be limited depending on the size of the final filter. In addition, the maximum size (for example, the maximum width size), the shape, and the like of the absorbent article may be restricted depending on the spread body used for manufacturing. As a result, the degree of freedom in designing the cigarette filter and the absorbent article (hereinafter, collectively referred to as “spread products”) may be reduced, and it may be difficult to manufacture the spread products as required.

  Therefore, the present invention facilitates the production of a spread article according to demand by improving the degree of freedom of design of the spread body and the spread article when producing a spread article using the spread body. The purpose is to:

  In order to solve the above problems, an opened body manufacturing apparatus according to one embodiment of the present invention includes a plurality of tow bands each including and transporting a plurality of crimped cellulose acetate fibers, and a plurality of tow bands individually transported. An individual conveying path, at least one opening device for opening the plurality of cellulose acetate fibers included in the plurality of tow bands, and a uniting unit that guides the plurality of tow bands passing through the plurality of individual conveying paths to unite; And a guide device for forming a spread body.

  According to the above configuration, the plurality of tow bands supplied by each of the plurality of individual transport paths are guided by the guide device after passing through the individual transport paths, and are united to form the spread body. For this reason, at least one of the width dimension and the thickness dimension of the spread body to be manufactured can be adjusted relatively easily by uniting the plurality of tow bands. Thereby, the degree of freedom of design of the spread body can be improved, so that the degree of freedom of design of a spread article using the spread body can be improved. Therefore, it is possible to easily manufacture a spread article according to a request.

  A plurality of the spreaders are arranged in each of the plurality of individual transport paths, and the guide device is arranged downstream of the plurality of individual transport paths in the transport direction of the tow band; The plurality of tow bands that have passed through the device may be guided by the guiding device and united.

  According to the configuration, the plurality of tow bands spread by the spreader in each of the individual transport paths are guided by the guide device and united, for example, a width dimension larger than the width dimension of each tow band. Can be produced relatively easily.

  The opening device is arranged at intervals in each of the plurality of individual transport paths, a plurality of opening roll pairs for opening the plurality of cellulose acetate fibers included in the tow band, and the plurality of A gas opening device that is disposed in each of the individual transport paths and opens the plurality of cellulose acetate fibers included in the tow band that has passed through the plurality of opening roll pairs with a gas. .

  According to the above configuration, the plurality of tow bands spread by the spread roller pair and the gas spreading device arranged in each of the plurality of individual transport paths can be guided and united by the guide device. Therefore, for example, while using a plurality of conventional opening devices having an opening roll pair and a gas opening device, it is possible to efficiently manufacture an opened body having a width larger than the width of each tow band.

  It is further arranged on the upstream side in the transport direction of the tow band than the plurality of individual transport paths, and further includes a common transport path in which the plurality of tow bands are transported in an overlapped manner, and the spreader has an interval in the common transport path. And a plurality of opening roll pairs for opening the plurality of cellulose acetate fibers included in the plurality of tow bands, and each of the plurality of individual transport paths are included in the tow band. A gas opening device for opening the plurality of cellulose acetate fibers by gas may be provided.

  According to the above configuration, by using a plurality of spread roll pairs arranged in the common transport path, while reducing the size and cost of the spreader, while reducing the cellulose acetate fibers included in the tow band, Efficient fiber opening can be achieved by a plurality of fiber opening roll pairs and a gas fiber opening device.

  The guide device is configured such that a first sheet portion and a second sheet portion formed by uniting the plurality of tow bands are stacked on each other, and a boundary position between the tow bands forming the first sheet portion and the second sheet portion are formed. The plurality of tow bands may be guided such that the boundary positions of the tow bands to be configured are shifted from each other.

  According to the above configuration, the thickness dimension of the spread body can be easily adjusted by forming and laminating the first sheet portion and the second sheet portion. Further, since the boundary position of the first sheet portion and the boundary position of the second sheet portion are shifted from each other, the boundary position of the toe band in the thickness direction of the spread body is prevented from continuing. Thereby, even when pressure is applied to the plurality of tow bands in the thickness direction of the first sheet portion and the second sheet portion, it is possible to easily maintain the arrangement of the plurality of tow bands.

  In the guide device, a first block group and a second block group in which the plurality of tow bands are arranged with a gap in one direction perpendicular to the transport direction of the tow band are stacked on each other, and the first block group is The plurality of tow bands may be guided such that the positions of the tow bands forming the second block group and the positions of the tow bands forming the second block group are shifted from each other. Thus, by disposing the first block group and the second block group, the density of the spread body can be easily adjusted while easily maintaining the arrangement of the plurality of tow bands.

  The plurality of individual transport paths are further arranged downstream of the tow band in the transport direction than the plurality of individual transport paths, further comprising a common transport path in which the plurality of tow bands are transported in an overlapping manner, the spreader includes a plurality of the individual transport paths. A plurality of opening roll pairs arranged at intervals to open the plurality of cellulose acetate fibers included in the tow band, and the plurality of opening roll pairs arranged on the common conveyance path. And a gas opening device for introducing the plurality of tow bands that have passed through the unity and introducing the plurality of cellulose acetate fibers contained in the plurality of tow bands with a gas.

  According to the above configuration, it is possible to open the plurality of tow bands conveyed through the plurality of individual conveyance paths while unifying the plurality of tow bands by the common gas opening apparatus while opening the plurality of tow bands by the opening roll pair. For this reason, a plurality of tow bands can be efficiently opened by a plurality of opening roll pairs and a gas opening device while reducing the size and cost of the opening device. In addition, by simultaneously opening a plurality of tow bands with a common gas opening device, the density and bulkiness of the spread body obtained by passing the tow band through the gas opening device can be easily adjusted.

  It is further arranged on the downstream side in the transport direction of the tow band than the plurality of individual transport paths, and further includes a common transport path in which the plurality of tow bands are transported in an overlapped manner, and the spreader has an interval in the common transport path. And a plurality of opening roll pairs for opening the plurality of cellulose acetate fibers included in the plurality of tow bands conveyed by each of the plurality of individual conveying paths, and arranged on the common conveying path. The apparatus may further include a gas opening device that opens the plurality of cellulose acetate fibers included in the plurality of tow bands that have passed through the plurality of opening roll pairs with gas.

  According to the above configuration, a plurality of tow bands conveyed through a plurality of individual conveying paths can be opened by a plurality of opening roll pairs and a gas opening apparatus in a common conveying path. For this reason, a plurality of tow bands can be efficiently opened by a plurality of opening roll pairs and a gas opening device while reducing the size and cost of the opening device. In addition, by simultaneously opening a plurality of tow bands with a common gas opening device, the density and bulkiness of the spread body obtained by passing the tow band through the gas opening device can be easily adjusted.

  The method for manufacturing an opened fiber according to one embodiment of the present invention includes a plurality of tow bands each including and transporting a plurality of crimped cellulose acetate fibers, and individually transporting the tow bands to a plurality of individual transport paths, The plurality of cellulose acetate fibers contained in the plurality of tow bands are spread, and the plurality of tow bands that have passed through the plurality of individual transport paths are guided and united to form a spread body.

  In each of the plurality of individual transport paths, the tow band that is transported in the individual transport path is spread, and the plurality of tow bands that are opened in the plurality of individual transport paths are more than the plurality of individual transport paths. The toe band may be guided and united on the downstream side in the transport direction.

  At positions spaced apart from each other of the plurality of individual transport paths, the plurality of cellulose acetate fibers included in the tow band are opened by a plurality of opening roll pairs, and in each of the plurality of individual transport paths, The plurality of cellulose acetate fibers contained in the tow band that has passed through the plurality of opening roll pairs may be opened by gas.

  The plurality of tow bands are transported by overlapping the plurality of tow bands on a common transport path arranged on the upstream side in the transport direction of the tow band from the plurality of individual transport paths, and at a position spaced by the common transport path, the plurality of tow bands are The plurality of cellulose acetate fibers included are spread by a plurality of opening roll pairs, and in each of the plurality of individual transport paths, the plurality of cellulose acetate fibers included in the tow band that has passed through the plurality of opening roll pairs. Cellulose acetate fibers may be opened by gas.

  A first sheet portion and a second sheet portion formed by uniting the plurality of tow bands are stacked on each other, and a boundary position between the tow bands forming the first sheet portion and the toe bands forming the second sheet portion The plurality of toe bands may be guided such that the boundary positions of the toe bands are shifted from each other.

  A first block group and a second block group in which the plurality of tow bands are arranged with a gap therebetween in one direction perpendicular to the transport direction of the tow band, and the positions of the tow bands forming the first block group are stacked on each other; The plurality of tow bands may be guided such that the positions of the tow bands constituting the second block group deviate from each other.

  At positions spaced apart from each other of the plurality of individual transport paths, the plurality of cellulose acetate fibers included in the tow band are opened by a plurality of opening roll pairs, and the tow band is more than the plurality of individual transport paths. Along with transporting the plurality of tow bands on a common transport path disposed on the downstream side in the transport direction, and in the common transport path, uniting the plurality of tow bands that have passed through the plurality of individual transport paths, The plurality of cellulose acetate fibers contained in the tow band may be opened by gas.

  Along with transporting the plurality of tow bands on a common transport path arranged on the downstream side in the transport direction of the tow band from the plurality of individual transport paths, the plurality of The plurality of cellulose acetate fibers included in the tow band are spread by a plurality of spread roll pairs, and, in the common transport path, the plurality of tow bands that have passed through the plurality of spread roll pairs are united. The plurality of cellulose acetate fibers contained in the tow band may be opened by gas.

  The spread body according to one embodiment of the present invention includes a plurality of band-shaped spread blocks formed by spreading a tow band including a plurality of crimped cellulose acetate fibers, and the spread block is arranged in a longitudinal direction. They are arranged side by side in one vertical direction.

  According to the above configuration, since the band-shaped spread blocks are arranged in one direction perpendicular to the longitudinal direction, the width of the spread body is compared with a width larger than the width of each spread block. Can be set easily. Thereby, the degree of freedom in designing the spread body can be improved.

  A first sheet portion and a second sheet portion in which the plurality of opening blocks are arranged in the one direction; the first sheet portion and the second sheet portion are stacked on each other to form the first sheet portion; A boundary position between the opened fiber blocks constituting the second opening and a boundary position between the opened fiber blocks constituting the second sheet portion may be shifted from each other.

  According to the above configuration, since the first sheet portion and the second sheet portion are arranged in an overlapping manner, the thickness dimension of the spread body can be easily adjusted. In addition, since the boundary position of the first sheet portion and the boundary position of the second sheet portion are displaced from each other, it is possible to prevent the boundary position of the spread block from continuing in the thickness direction of the spread body. Accordingly, even when pressure is applied to the plurality of spread blocks in the thickness direction of the first sheet portion and the second sheet portion, the arrangement of the plurality of spread blocks can be easily maintained.

  A first block group and a second block group in which the plurality of spread blocks are arranged with a gap in the one direction; the first block group and the second block group are stacked on each other; The position of the spread block forming the block group and the position of the spread block forming the second block group may be shifted from each other. By arranging the first block group and the second block group in this manner, the density of the spread body can be easily adjusted while easily maintaining the arrangement of the plurality of spread blocks.

  An open fiber according to another aspect of the present invention is an open fiber obtained by uniting and crimping a plurality of cellulose acetate fibers, and has a total denier set to a value of 50,000 or more, and a filament denier. Is set to a value greater than 0 and less than 40.0.

  According to the above configuration, for example, as an opened body for an opened article, it is possible to obtain an opened body in which the total denier is significantly larger than the conventional one and the filament denier is smaller than the fiber bundle for woven or knitted applications. it can. Therefore, for example, even when a relatively large-sized opened article is manufactured, it is possible to easily manufacture an opened article according to a request.

  According to each aspect of the present invention, in the case of manufacturing a spread article using the spread body, by improving the degree of freedom in designing the spread body and the spread article, a spread fiber article according to demand can be obtained. It can be easily manufactured.

It is a schematic diagram of the spread body manufacturing device concerning a 1st embodiment. FIG. 2 is a vertical cross-sectional view perpendicular to a conveying direction of the spread body manufactured by the spread body manufacturing apparatus of FIG. 1. It is a schematic diagram of the spread body manufacturing device concerning a 2nd embodiment. It is a vertical sectional view perpendicular to the conveyance direction of the spread body concerning a 3rd embodiment. It is a vertical sectional view perpendicular to the conveyance direction of the spread body concerning a 4th embodiment. It is a schematic diagram of a spread body manufacturing device according to a fifth embodiment. It is a schematic diagram of the spread body manufacturing device concerning a 6th embodiment.

  Hereinafter, each embodiment will be described with reference to the drawings. “Upstream” referred to below refers to the upstream of the tow band 7 in the transport direction P, and “downstream” refers to the downstream of the tow band 7 in the transport direction P.

(1st Embodiment)
[Spread body production equipment]
FIG. 1 is a schematic diagram of an opened body manufacturing apparatus 1 (hereinafter, simply referred to as a manufacturing apparatus 1) according to the first embodiment. FIG. 1 corresponds to a diagram (here, a top view) viewed from a direction perpendicular to each axial direction of the spreading roll pairs 2 and 3 of the manufacturing apparatus 1.

  A bale-shaped tow band 7 stored in a plurality of packing containers is fed to the manufacturing apparatus 1 and fed out. The tow band 7 includes a plurality of crimped cellulose acetate fibers. Here, the cellulose acetate fiber contained in the tow band 7 is a long fiber of cellulose diacetate. As an example, in the manufacturing apparatus 1, the toe band 7 is transported in a predetermined transport direction P while keeping the width direction horizontal.

  The manufacturing apparatus 1 includes at least one (here, a plurality of) opening devices 9, a guide device 5, a plasticizer adhering device 6, a plurality of individual transport paths R1, and a single common transport path R2. The plurality of individual conveyance paths R1 individually convey a plurality of tow bands 7 including and conveyed a plurality of crimped cellulose acetate fibers, respectively. The opening device 9 opens a plurality of cellulose acetate fibers contained in the plurality of tow bands 7. In the manufacturing apparatus 1, the plurality of tow bands 7 that have passed through the plurality of individual transport paths R1 are guided and united, so that the spread body 40 is formed.

  As a specific configuration, the individual transport path R1 and the common transport path R2 extend in the transport direction P. In the manufacturing apparatus 1, the plurality of individual transport paths R1 are arranged in parallel on the upstream side of the common transport path R2. The number of the individual transport paths R1 is not limited.

  The plurality of fiber opening devices 9 are arranged in each of the plurality of individual transport paths R1. The opening device 9 includes a plurality of first opening roll pairs 2, a plurality of second opening roll pairs 3, and a plurality of gas opening devices 4. The first opening roll pair 2 and the second opening roll pair 3 are arranged at intervals in each of the plurality of individual transport paths R1 to open a plurality of cellulose acetate fibers included in the tow band 7. . The second spread roll pair 3 is disposed downstream of the first spread roll pair 2.

  The first opening roll pair 2 has rolls 15 and 16 that are supported in parallel and arranged with their peripheral surfaces facing each other. The second spreading roll pair 3 has rolls 17 and 18 that are supported in parallel and arranged with their peripheral surfaces facing each other. The second spread roll pair 3 rotates at a higher peripheral speed than the peripheral speed of the first spread roll pair 2.

  The toe band 7 transported in the transport direction P in each individual transport path R1 is inserted between the rolls 15 and 16 and between the rolls 17 and 18. The tow band 7 is tensioned in the transport direction P by the first opening roll pair 2 and the second opening roll pair 3 while being in contact with the peripheral surfaces of the rolls 15 to 18, and the bulk is spread.

  On the peripheral surface of one of the rolls 15 and 16 or one of the rolls 17 and 18, a groove for opening the tow band 7 in the width direction is formed in a spiral around the rotation axis. It may be.

  The plurality of gas opening devices 4 are arranged in each of the plurality of individual transport paths R1 and open the plurality of cellulose acetate fibers contained in the tow band 7 that has passed through the plurality of opening roll pairs 2 and 3 with the gas G. Delicate.

  The gas opening device 4 is formed in a cylindrical shape as a whole. The gas opening device 4 has an opening chamber for opening the tow band 7 with the gas G and a transport path for transporting the tow band 7 in the transport direction P. The gas opening device 4 includes, as an example, an introduction unit 13 into which the tow band 7 is introduced, and a jet generation unit 14 that generates a jet of the gas G and mixes with the tow band 7 on the downstream side of the introduction unit 13.

  An inlet 14 a into which the gas G is introduced is provided on a side surface of the jet generating unit 14. On the downstream side of the jet generating section 14, a stay section for forming the tow band 7 by staying may be provided.

  Here, for details of the structure of the gas opening device 4, for example, the description in Japanese Patent Application Laid-Open No. 2012-239337 can be referred to. The gas G may be a gas other than air. Further, on the downstream side of the gas opening device 4, there may be provided an adapter part having an internal space surrounded by an inner wall and forming the tow band 7 in accordance with the shape of the internal space.

  The guide device 5 forms the spread body 40 by guiding and uniting the plurality of tow bands 7 that have passed through the plurality of spread devices 9. The guide device 5 of the present embodiment transports the toe band 7 in a first direction (transport direction P) and unites in a second direction perpendicular to the first direction. As an example, the second direction is a horizontal direction (the width direction of the toe band 7).

  The guide device 5 has a plurality of guide members. The guide member is disposed so as to be able to contact the toe band 7. The guide member includes, for example, at least one of a guide roll, a guide pin, and a guide plate.

  The guide device 5 converges and converges the plurality of tow bands 7 conveyed. The guide device 5 of the present embodiment is disposed downstream of the plurality of individual transport paths R1. Thereby, the plurality of tow bands 7 that have passed through the plurality of opening devices 9 are guided and united by the guide device 5 to form a sheet-like tow band assembly 8.

  The plasticizer attaching device 6 joins the plurality of tow bands 7 included in the tow band assembly 8 by applying a plasticizer to the tow band assembly 8 guided by the guide device 5. Known plasticizers can be used as appropriate. The plasticizer of the present embodiment is triacetin. As an example, the plasticizer application device 6 applies a plasticizer to the tow band assembly 8 by applying a liquid plasticizer to the peripheral surface of the tow band assembly 8 with a brush.

  The plasticizer impregnating device 6 may be arranged on the upstream side of the first opening roll pair 2, or may be arranged between the second opening roll pair 3 and the gas opening device 4. Good. Alternatively, the plasticizer impregnating device 6 may be disposed between the gas opening device 4 and the guide device 5. The plasticizer applying device 6 may apply a plasticizer to the tow band assembly 8 by spraying. Further, the plasticizer attachment device 6 may be omitted as appropriate.

  By using the tow band assembly 8, a sheet-like spread body 40 is obtained. The absorbent body is manufactured by cutting the spread body 40 into a predetermined length. For example, an absorbent article, which is an open fiber article, is manufactured by arranging an absorber between a back sheet having air permeability and a top sheet having air permeability and liquid permeability.

  As described above, in the present embodiment, the spread body 40 is manufactured by using the manufacturing apparatus 1. In the manufacturing method of the spread body 40 of the present embodiment, the plurality of tow bands 7 to be conveyed are individually conveyed to the plurality of individual conveyance paths R1, and the plurality of cellulose acetate fibers included in the plurality of tow bands 7 are opened. The plurality of tow bands 7 that have passed through the plurality of individual transport paths R1 are guided and united to form the spread body 40.

  In the present embodiment, in each of the plurality of individual transport paths R1, the tow band 7 transported in the individual transport path R1 is spread, and the plurality of tow bands 7 opened in the plurality of individual transport paths R1 are separated into a plurality of It is guided and united on the downstream side of the individual transport path R1. In the present embodiment, a plurality of cellulose acetate fibers included in the tow band 7 are spread by a plurality of spread roll pairs 2 and 3 at positions spaced apart from each other in the plurality of individual transport paths R1. In each of the individual transport paths R1, a plurality of cellulose acetate fibers contained in the tow band 7 that has passed through the plurality of opening roll pairs 2 and 3 are opened by gas.

  FIG. 2 is a vertical sectional view perpendicular to the transport direction P of the spread body 40 manufactured by the manufacturing apparatus 1 of FIG. As shown in FIG. 2, the spread body 40 includes a plurality of band-shaped spread blocks 45 formed by spreading a tow band 7 including a plurality of crimped cellulose acetate fibers. The spread block 45 is arranged in one direction perpendicular to the longitudinal direction of the spread body 40. This one direction coincides with the axial direction of the rolls 15-18. The two opening blocks 45 arranged in one direction are connected by the plasticizer attached by the plasticizer attaching device 6. As described above, the spread body 40 is configured by spreading and uniting the plurality of tow bands 7.

  Thus, the spread body 40 has a width dimension larger than the width dimension of at least one spread block 45. The width of the spread body 40 can be easily adjusted by changing the number of spread blocks 45.

  As described above, in the spreader 40, the band-shaped spreader blocks 45 are arranged side by side in one direction perpendicular to the longitudinal direction, so that the width of the spreader 40 is set to be larger than the width of each spreader block 45. Can be set relatively easily to a large width dimension. Thereby, the degree of freedom in designing the spread body 40 can be improved.

  The FD and TD of the spread body 40 can be set as appropriate. By using the manufacturing apparatus 1, the degree of freedom in designing the TD of the spread body 40 is greatly improved. Specifically, in the present embodiment, the number of fibers included in the spread body 40 can be significantly increased as compared with the conventional spread body.

  Here, as an example, in the spread body 40, the FD is set to a value in a range of greater than 0 and less than 40, and the TD is set to a value of 50,000 or more. The spread body 40 is a fiber bundle (fiber aggregate) in which crimped cellulose acetate fibers are spread and united.

  Each dimension of the spread is affected by the number of fibers used in its manufacture. Therefore, in order to produce the target spread, it takes time to select fibers to be used for producing the spread. On the other hand, in the present embodiment, since the degree of freedom in designing the TD of the spread body 40 is greatly improved, for example, at least one of the thickness dimension and the width dimension of the spread body 40 is changed to a conventional spread fiber The value can be easily set to a value larger than that of the body, and the trouble can be reduced.

  As described above, according to the manufacturing apparatus 1, the plurality of tow bands 7 supplied by each of the plurality of individual transport paths R1 are guided and united by the guide device 5 after passing through the individual transport path R1. Thus, the spread body 40 is formed. Therefore, at least one of the width dimension and the thickness dimension of the spread body 40 to be manufactured can be relatively easily adjusted by uniting the plurality of tow bands 7. Thereby, the degree of freedom of design of the spread body 40 can be improved, so that the degree of freedom of design of the spread article using the spread body 40 can be improved. Therefore, it is possible to easily manufacture a spread article according to a request.

  Further, in the manufacturing apparatus 1, the plurality of opening devices 9 are disposed in each of the plurality of individual transport paths R1, the guide device 5 is disposed downstream of the plurality of individual transport paths R1, and the plurality of opening devices are provided. The plurality of toe bands 7 that have passed through 9 are guided by the guiding device 5 and united.

  In this way, the plurality of tow bands 7 spread by the spreader 9 in each of the individual transport paths R1 are guided by the guide device 5 to be united, for example, to be smaller than the width dimension of each tow band 7. The spread body 40 having a large width can be manufactured relatively easily.

  In addition, the opening device 9 includes a plurality of opening roll pairs 2 and 3 arranged at intervals in each of the plurality of individual conveyance paths R1 and a gas opening device arranged in each of the plurality of individual conveyance paths R1. And 4.

  Thereby, the plurality of tow bands 7 opened by the opening roll pairs 2 and 3 and the gas opening device 4 arranged in each of the plurality of individual transport paths R1 can be guided and united by the guide device 5. . Therefore, for example, while using a plurality of conventional opening devices having the opening roll pairs 2 and 3 and the gas opening device 4, the opening device 40 having a width larger than the width of each tow band 7 is used. It can be manufactured efficiently.

  Further, the opened body 40 of the present embodiment is an opened body 40 obtained by uniting and crimping a plurality of cellulose acetate fibers, TD is set to 50,000 or more, and FD is set to 0 or more. The value is largely set to a value less than 40.0.

  In this case, the lower limit of the TD of the spreader 40 can be appropriately set within the above range, but as an example, a value of 70,000 or more is preferable, a value of 100,000 or more is more preferable, and 150,000 or more. Values are more preferred. Further, the upper limit of the TD of the spread body 40 can be appropriately set within the above range, but as an example, a value of less than 3,600,000 is preferable, and a value of less than 1,800,000 is more preferable.

  As the cellulose acetate fiber contained in the spread fiber 40, a cellulose diacetate fiber is preferable. As the degree of substitution (average degree of substitution) of the cellulose diacetate fiber, for example, a value in the range of 2.2 or more and 2.6 or less is preferable.

  Thereby, for example, as an opened body for an opened article, an opened body 40 having a significantly larger TD than before and a smaller FD than a fiber bundle for woven or knitted fabric can be obtained. Therefore, for example, even when a relatively large-sized opened article is manufactured, it is possible to easily manufacture an opened article according to a request. Hereinafter, other embodiments will be described focusing on differences from the first embodiment.

(2nd Embodiment)
FIG. 3 is a schematic diagram of the manufacturing apparatus 11 according to the second embodiment. As shown in FIG. 3, the manufacturing apparatus 11 includes a common transport path R3 that is disposed upstream of the plurality of individual transport paths R1 and through which the plurality of toe bands 7 are transported in a stacked manner. The common transport path R3 extends in the transport direction P. The common transport path R2 is disposed downstream of the common transport path R3 with the individual transport path R1 interposed therebetween.

  The opening device 19 of the manufacturing apparatus 11 includes a plurality of opening roll pairs 2 and 3 arranged at intervals in the common conveyance path R3 and a plurality of gas opening arrangements arranged in each of the plurality of individual conveyance paths R1. Device 4.

  In the method for manufacturing the spread body 40 according to the second embodiment, a plurality of tow bands 7 are stacked and conveyed on a common conveyance path R2 arranged upstream of the plurality of individual conveyance paths R1, and the interval between the common conveyance paths R2 is reduced. At the position, the plurality of cellulose acetate fibers contained in the plurality of tow bands 7 are spread by the plurality of spreading roll pairs 2 and 3, and in each of the plurality of individual transport paths R1, the plurality of spreading roll pairs 2 and A plurality of cellulose acetate fibers contained in the tow band 7 that has passed through 3 are opened by gas.

  According to the second embodiment, by using a plurality of opening roll pairs 2 and 3 arranged in the common transport path R2, the opening device 19 is included in the toe band 7 while reducing the size and cost of the opening device 19. A plurality of cellulose acetate fibers can be efficiently opened by the plurality of opening roll pairs 2 and 3 and the gas opening device 4.

(Third embodiment)
FIG. 4 is a vertical sectional view perpendicular to the transport direction P of the spread body 41 according to the third embodiment. As shown in FIG. 4, the spread body 41 includes two sheet portions 46 (a first sheet portion 46A and a second sheet portion 46A) in which a plurality of band-shaped spread blocks 45 are arranged in one direction perpendicular to the longitudinal direction. The seat portion 46B) is provided.

  In the spreader 41, the first sheet portion 46A and the second sheet portion 46B are stacked on each other, and the boundary position S between the spreader blocks 45 forming the first sheet portion 46A and the spreader forming the second sheet portion 46B. The boundary positions S between the blocks 45 are shifted from each other. The number of first sheet portions 46A and second sheet portions 46B is not limited as long as the number is one or more. The spread body 41 is configured by spreading and uniting a plurality of tow bands 7, similarly to the spread body 40.

  In order to manufacture such a spread body 41, the guide device 5 of the third embodiment is configured such that a first sheet portion 46A and a second sheet portion 46B obtained by combining a plurality of tow bands 7 are laminated on each other, and The plurality of tow bands 7 are guided such that the boundary position (boundary position S) between the tow bands 7 forming the seat portion 46A and the boundary position (boundary position S) between the tow bands 7 forming the second seat portion 46B are shifted from each other. I do.

  That is, in the method of manufacturing the spread body 41 according to the third embodiment, the first sheet portion 46A and the second sheet portion 46B formed by uniting the plurality of tow bands 7 are stacked on each other to form the first sheet portion 46A. The plurality of tow bands 7 are guided such that the boundary positions between the toe bands 7 and the boundary positions between the tow bands 7 forming the second seat portion 46B are shifted from each other. Such an arrangement method of the first sheet portion 46A and the second sheet portion 46B is realized by adjusting the arrangement of each guide member included in the guide device 5.

  According to the third embodiment, the thickness dimension of the spread body 41 can be easily adjusted by arranging the first sheet portion 46A and the second sheet portion 46B in an overlapping manner. Further, since the boundary position S of the first sheet portion 46A and the boundary position S of the second sheet portion 46B are shifted from each other, the boundary position S of the spread block 45 is continuous in the thickness direction of the spread body 41. Is avoided. Thereby, even when pressure is applied to the plurality of spread blocks 45 in the thickness direction of the first sheet portion 46A and the second sheet portion 46B, the arrangement of the plurality of spread blocks 45 can be easily maintained.

  In the case where the arrangement of the plurality of opening blocks 45 is relatively firmly held or the case where the opening body 41 is held by another member, two sheet portions adjacent in the thickness direction of the sheet portion 46 are used. At 46, the boundary positions S may be matched.

(Fourth embodiment)
FIG. 5 is a vertical cross-sectional view perpendicular to the transport direction P of the spread body 42 according to the fourth embodiment. As shown in FIG. 5, the spread body 42 has a structure partially common to the spread body 41, but a plurality of spread blocks 45 are arranged with a gap Q in the one direction. It includes two block groups 47 (a first block group 47A and a second block group 47B).

  The first block group 47A and the second block group 47B are stacked on each other. The position of the spread block 45 forming the first block group 47A and the position of the spread block 45 forming the second block group 47B are shifted from each other. The gap Q is constant as an example. The number of the first block group 47A and the second block group 47B is not limited as long as the number is one or more.

  In order to manufacture such a spread body 42, the guide device 5 of the fourth embodiment includes a first block group 47A and a second block 47A in which a plurality of tow bands 7 are arranged with a gap Q in the one direction. The groups 47B are stacked on each other, and the plurality of toe bands 7 are guided such that the positions of the toe bands 7 constituting the first block group 47A and the positions of the toe bands 7 constituting the second block group 47B are shifted from each other.

  That is, in the method of manufacturing the spread body 42 according to the fourth embodiment, the first block group 47A and the second block group 47B in which the plurality of tow bands 7 are arranged with the gap Q in the one direction are stacked on each other, The plurality of tow bands 7 are guided such that the positions of the toe bands 7 forming the first block group 47A and the positions of the tow bands 7 forming the second block group 47B are shifted from each other.

  According to such a fourth embodiment, the same effects as in the third embodiment can be obtained. Further, by arranging the first block group 47A and the second block group 47B in this manner, the density of the spread body 42 can be easily adjusted while easily maintaining the arrangement of the plurality of spread blocks 45. Note that the spread bodies 41 and 42 of the third and fourth embodiments may have the same FD and TD as the spread body 40 of the first embodiment.

(Fifth embodiment)
FIG. 6 is a schematic diagram of a manufacturing apparatus 21 according to the fifth embodiment. As shown in FIG. 6, the manufacturing apparatus 21 includes a common transport path R2 that is disposed downstream of the plurality of individual transport paths R1 and through which the plurality of toe bands 7 are transported in an overlapping manner.

  The opening device 29 includes a plurality of opening roll pairs 2 and 3 arranged at intervals in each of the plurality of individual conveying paths R1 and a plurality of opening roll pairs 2 and 2 arranged on a common conveying path R2. A plurality of tow bands 7 having passed through 3 are united and introduced, and a single gas opening device 4 for opening a plurality of cellulose acetate fibers contained in the plurality of tow bands 7 with gas G.

  When the plurality of tow bands 7 pass through the gas opening device 4, the plurality of tow bands 7 are united and opened by the gas G, whereby the tow band aggregate 10 is obtained. In the fifth embodiment, the gas opening device 4 also serves as a guiding device that guides and unites the plurality of tow bands 7 to form the opening body 40.

  In the manufacturing method of the spread body 40 according to the fifth embodiment, the plurality of cellulose acetate fibers included in the tow band 7 are separated into the plurality of spread roll pairs 2 at positions spaced apart from each other in the plurality of individual transport paths R1. 3, the plurality of tow bands 7 are stacked and conveyed on a common conveyance path R2 arranged downstream of the plurality of individual conveyance paths R1, and passed through the plurality of individual conveyance paths R1 in the common conveyance path R2. A plurality of tow bands 7 are united, and a plurality of cellulose acetate fibers contained in the tow bands 7 are opened by gas.

  According to the fifth embodiment, the plurality of tow bands 7 conveyed through the plurality of individual conveyance paths R1 are spread by the spreading roll pairs 2 and 3, and the plurality of tow bands 7 are combined by the common gas spreading device 4. You can open while you are. Therefore, the plurality of tow bands 7 can be efficiently opened by the plurality of opening roll pairs 2 and 3 and the gas opening device 4 while reducing the size and cost of the opening device 29. In addition, by simultaneously opening a plurality of tow bands 7 with the common gas opening device 4, the density and bulkiness of the spread body 40 obtained by passing the tow band 7 through the gas opening device 4 can be easily adjusted. it can.

(Sixth embodiment)
FIG. 7 is a schematic diagram of a manufacturing apparatus 31 according to the sixth embodiment. As illustrated in FIG. 7, the manufacturing apparatus 31 includes a common transport path R2 that is disposed downstream of the plurality of individual transport paths R1 and through which the plurality of toe bands 7 are transported in a stacked manner.

  The opening device 39 is arranged at intervals in the common transport path R2, and opens a plurality of cellulose acetate fibers included in the plurality of tow bands 7 transported by the plurality of individual transport paths R1. A single gas opening that opens a plurality of cellulose acetate fibers included in the tow band 7 that is disposed on the roll pair 2 and 3 and the common transport path R2 and that has passed through the plurality of opening roll pairs 2 and 3 with gas. And a fiber device 4.

  In the opening device 39, the plurality of tow bands 7 transported by each of the plurality of individual transport paths R1 are introduced into the plurality of opening roll pairs 2 and 3. In the sixth embodiment, the plurality of opening roll pairs 2 and 3 and the gas opening device 4 also serve as a guide device for forming the opening body 40 by guiding and uniting the plurality of tow bands 7. .

  In the manufacturing method of the spread body 40 according to the sixth embodiment, the plurality of tow bands 7 are stacked and conveyed on the common conveyance path R2 arranged downstream of the plurality of individual conveyance paths R1, and each of the common conveyance paths R2 is conveyed. At spaced positions, a plurality of cellulose acetate fibers included in a plurality of tow bands 7 are spread by a plurality of spread roll pairs 2 and 3, and a plurality of spread roll pairs 2 are shared in a common transport path R2. , 3 are united, and a plurality of cellulose acetate fibers contained in the tow band 7 are opened by gas.

  According to the sixth embodiment, the plurality of tow bands 7 conveyed through the plurality of individual conveyance paths R1 are opened by the plurality of opening roll pairs 2 and 3 in the common conveyance path R2, and the gas opening apparatus 4 is used. Can be opened. Therefore, the plurality of tow bands 7 can be efficiently opened by the plurality of opening roll pairs 2 and 3 and the gas opening device 4 while reducing the size and cost of the opening device 39. In addition, by simultaneously opening a plurality of tow bands 7 with the common gas opening device 4, the density and bulkiness of the spread body 40 obtained by passing the tow band 7 through the gas opening device 4 can be easily adjusted. it can.

  In the example shown in FIG. 7, a plurality of toe bands 7 are guided and united, but a single toe band 7 may be provided. In this case, the single tow band 7 is preset so as to have the FD and TD of the spread body 40 to be manufactured. In other words, the spread body 40 in this case is configured by spreading a single tow band 7.

  The dry spinning device included in the tow band manufacturing apparatus that manufactures such a tow band 7 is different from the dry spinning apparatus included in the conventional tobacco filter tow band manufacturing apparatus. It is configured by being connected and arranged. By using such a dry spinning device, the tow band 7 is manufactured so as to have the above-described FD and TD of the spread body 40 while being a single tow band.

  As described above, if the opened body 40 is manufactured by the single tow band 7, for example, by manufacturing the opened body 40 having a large TD in advance, a plurality of small opened bodies are united and the desired opened state is obtained. It also saves you the trouble of manufacturing the body.

  The present invention is not limited to the above embodiments, and the configuration and method thereof can be changed, added, or deleted without departing from the spirit of the present invention. The above embodiments may be arbitrarily combined with each other, and for example, a part of the configuration or method in one embodiment may be applied to another embodiment.

  ADVANTAGE OF THE INVENTION As mentioned above, according to this invention, in the case of manufacturing an open fiber article which uses an open fiber, the degree of freedom of design of an open fiber and an open fiber article is improved, Has an excellent effect that can be easily produced. Therefore, it is useful to apply the present invention to a wide spread body manufacturing apparatus, a spread body manufacturing method, and a spread body that can exhibit the significance of this effect.

G Gas P Transport direction Q Gap R1 Individual transport path R2, R3 Common transport path S Boundary position 1,11,21,31 Spread body manufacturing device 2 First spread roll pair (spread roll pair)
3 Second spread roll pair (spread roll pair)
4 Gas opening device 5 Guide device 7 Tow band 9,19,29,39 Spreading device 40-42 Spreading body 45 Spreading block 46A First sheet portion 46B Second sheet portion 47A First block group 47B Second block group

Claims (20)

A plurality of tow bands each containing and transporting a plurality of crimped cellulose acetate fibers, a plurality of individual transport paths for individually transporting,
At least one opening device for opening the plurality of cellulose acetate fibers included in the plurality of tow bands,
A spreader manufacturing apparatus, comprising: a guide device configured to guide and unite the plurality of tow bands that have passed through the plurality of individual transport paths to form a spread body. A plurality of opening devices are arranged in each of the plurality of individual transport paths,
The guide device is disposed downstream of the plurality of individual transport paths in the transport direction of the tow band,
The spreader manufacturing apparatus according to claim 1, wherein the plurality of tow bands that have passed through the plurality of spreaders are guided and united by the guide device. The opening device,
A plurality of opening roll pairs that are arranged at intervals in each of the plurality of individual transport paths and open the plurality of cellulose acetate fibers included in the tow band,
A gas opening device that is arranged in each of the plurality of individual transport paths and opens the plurality of cellulose acetate fibers included in the tow band that has passed through the plurality of opening roll pairs by gas. Item 3. An apparatus for manufacturing an opened fiber according to Item 2. It further comprises a common transport path, which is disposed on the upstream side in the transport direction of the tow band from the plurality of individual transport paths, and in which the plurality of tow bands are transported in an overlapping manner.
The opening device,
A plurality of opening roll pairs that are arranged at intervals in the common transport path and open the plurality of cellulose acetate fibers included in the plurality of tow bands,
3. The spreader manufacturing apparatus according to claim 2, further comprising: a gas spreader that is arranged in each of the plurality of individual transport paths and spreads the plurality of cellulose acetate fibers included in the tow band with a gas. 4. .   The guide device is configured such that a first sheet portion and a second sheet portion formed by uniting the plurality of tow bands are stacked on each other, and a boundary position between the tow bands forming the first sheet portion and the second sheet portion are formed. The spread fiber manufacturing apparatus according to any one of claims 2 to 4, wherein the plurality of tow bands are guided so that a boundary position between the tow bands to be configured is shifted from each other.   In the guide device, a first block group and a second block group in which the plurality of tow bands are arranged with a gap in one direction perpendicular to the transport direction of the tow band are stacked on each other, and the first block group is The spreader according to any one of claims 2 to 4, wherein the plurality of tow bands are guided such that a position of the tow band configuring the tow band and a position of the tow band configuring the second block group are shifted from each other. manufacturing device. It further comprises a common transport path, which is arranged downstream of the plurality of individual transport paths in the transport direction of the tow band and in which the plurality of tow bands are transported in an overlapping manner,
The opening device,
A plurality of opening roll pairs that are arranged at intervals in each of the plurality of individual transport paths and open the plurality of cellulose acetate fibers included in the tow band,
The plurality of tow bands arranged in the common transport path and passing through the plurality of opening roll pairs are united and introduced, and the plurality of cellulose acetate fibers included in the plurality of tow bands are opened by gas. The opened fiber manufacturing apparatus according to claim 1, further comprising a gas opening apparatus that performs the opening. It further comprises a common transport path, which is arranged downstream of the plurality of individual transport paths in the transport direction of the tow band and in which the plurality of tow bands are transported in an overlapping manner,
The opening device,
A plurality of opening roll pairs for opening the plurality of cellulose acetate fibers contained in the plurality of tow bands carried by each of the plurality of individual carrying paths, which are arranged at intervals in the common carrying path. ,
2. A gas opening device that is disposed on the common transport path and opens the plurality of cellulose acetate fibers included in the plurality of tow bands that have passed through the plurality of opening roll pairs with gas. The spread fiber manufacturing apparatus according to any one of claims 1 to 4. The plurality of tow bands each including and being conveyed including the plurality of crimped cellulose acetate fibers are individually conveyed to a plurality of individual conveyance paths, and the plurality of cellulose acetate fibers included in the plurality of tow bands are opened. Delicate,
A method of manufacturing an opened body, wherein the plurality of tow bands that have passed through the plurality of individual transport paths are guided and united to form an opened body. In each of the plurality of individual transport paths, open the tow band transported in the individual transport path,
The spread body according to claim 9, wherein the plurality of tow bands spread in the plurality of individual transport paths are guided and united on the downstream side in the transport direction of the tow band from the plurality of individual transport paths. Manufacturing method. At positions spaced apart from each other of the plurality of individual transport paths, the plurality of cellulose acetate fibers included in the tow band are spread by a plurality of spread roll pairs,
The production of the spread body according to claim 10, wherein in each of the plurality of individual transport paths, the plurality of cellulose acetate fibers included in the tow band that has passed through the plurality of spread roll pairs are opened by gas. Method. The plurality of tow bands are transported by overlapping the tow bands on a common transport path arranged on the upstream side in the transport direction of the tow band from the plurality of individual transport paths,
At a position spaced by the common transport path, the plurality of cellulose acetate fibers contained in the plurality of tow bands are spread by a plurality of spread roll pairs,
The production of the spread body according to claim 10, wherein in each of the plurality of individual transport paths, the plurality of cellulose acetate fibers included in the tow band that has passed through the plurality of spread roll pairs are opened by gas. Method.   A first sheet portion and a second sheet portion formed by uniting the plurality of tow bands are stacked on each other, and a boundary position between the tow bands forming the first sheet portion and the toe bands forming the second sheet portion The method according to any one of claims 10 to 12, wherein the plurality of tow bands are guided so that the boundary positions of the tow bands are shifted from each other.   A first block group and a second block group in which the plurality of tow bands are arranged with a gap therebetween in one direction perpendicular to the transport direction of the tow band, and the positions of the tow bands forming the first block group are stacked on each other; The method for manufacturing an opened fiber according to any one of claims 10 to 12, wherein the plurality of tow bands are guided so that a position of the tow band configuring the second block group is shifted from each other. At positions spaced apart from each other of the plurality of individual transport paths, the plurality of cellulose acetate fibers included in the tow band are spread by a plurality of spread roll pairs,
Along with transporting the plurality of tow bands on a common transport path arranged downstream of the plurality of individual transport paths in the transport direction of the tow band, the common transport path has passed through the plurality of individual transport paths. The method for producing an opened body according to claim 9, wherein a plurality of tow bands are united, and the plurality of cellulose acetate fibers contained in the tow band are opened with a gas.   Along with transporting the plurality of tow bands on a common transport path arranged on the downstream side in the transport direction of the tow band from the plurality of individual transport paths, the plurality of The plurality of cellulose acetate fibers included in the tow band are spread by a plurality of spread roll pairs, and, in the common transport path, the plurality of tow bands that have passed through the plurality of spread roll pairs are united. The method according to claim 9, wherein the plurality of cellulose acetate fibers contained in the tow band are opened with a gas. Equipped with a plurality of band-shaped fiber opening blocks in which a tow band including a plurality of crimped cellulose acetate fibers is spread,
An opened body in which the opened blocks are arranged in one direction perpendicular to the longitudinal direction. A first sheet portion and a second sheet portion in which the plurality of opening blocks are arranged in the one direction;
The first sheet portion and the second sheet portion are stacked on each other, and a boundary position between the spread blocks forming the first sheet portion and a boundary position between the spread blocks forming the second sheet portion are different from each other. The spread body according to claim 17, which is shifted from each other. A first block group and a second block group in which the plurality of spread blocks are arranged with a gap in the one direction;
The first block group and the second block group are stacked on each other, and the position of the spread block forming the first block group and the position of the spread block forming the second block group are shifted from each other. The spread body according to claim 17, which is provided. An unfolded body obtained by combining and crimping a plurality of cellulose acetate fibers,
An open fiber, wherein the total denier is set to a value of 50,000 or more, and the filament denier is set to a value in a range of more than 0 and less than 40.0.

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