CN109097885B - Opening device for multi-hydrogen bond fiber tows - Google Patents
Opening device for multi-hydrogen bond fiber tows Download PDFInfo
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- CN109097885B CN109097885B CN201810770212.6A CN201810770212A CN109097885B CN 109097885 B CN109097885 B CN 109097885B CN 201810770212 A CN201810770212 A CN 201810770212A CN 109097885 B CN109097885 B CN 109097885B
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- disc
- action
- hydrogen bond
- feeding
- opening
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/18—Separating or spreading
Abstract
Discloses an opening device of a multi-hydrogen bond fiber tow, belonging to the technical field of textile equipment. The opening and closing device comprises a feeding disc, an action disc and a wire outlet disc, wherein the feeding disc, the action disc and the wire outlet disc form an opening disc group, a plurality of feeding holes are distributed in the feeding disc, a plurality of action holes are distributed in the action disc, a plurality of wire outlet holes are distributed in the wire outlet disc, the feeding disc, the action disc and the wire outlet disc are identical in specification, the feeding holes, the action holes and the wire outlet holes are identical in number and specification, the arrangement positions of the feeding holes on the feeding disc, the arrangement positions of the action holes on the action disc and the arrangement positions of the wire outlet holes on the wire outlet disc are in one-to-one correspondence, the planes of the feeding disc, the action disc and the wire outlet disc are parallel to each other, multi-hydrogen-bond fiber tows sequentially penetrate through the feeding holes, the action holes and the wire outlet holes, and in the application process. When the opening device is used for opening the multi-hydrogen bond fiber tows, the operation is convenient, the environment is protected, and the cost is low.
Description
Technical Field
The invention relates to the technical field of textile equipment, in particular to an opening device for a multi-hydrogen bond fiber tow.
Background
The multi-hydrogen bond fiber refers to a fiber material containing hydrogen bond groups in a high molecular structure repeating unit forming the fiber, and natural regenerated fibers usually belong to the fiber material, such as regenerated cellulose fibers, alginate fibers, chitin fibers and the like. Such fibers tend to exhibit a semi-blocking and stiff state immediately after formation and drying, which is caused by localized blocking between the fiber surfaces. The adhesion and the hardened state bring troubles to the subsequent cutting, spinning, weaving, non-weaving and other processing processes and application development. At present, the method for solving the problem is generally to adopt a method of oiling, namely, a certain amount of surfactant and dispersant are attached to the surface of the fiber to destroy the hydrogen bond action among molecules, so that the adhesion effect among the fibers is eliminated, and the possibility is provided for the development of the subsequent cutting, spinning and weaving processes. Because the technological cost of oiling is relatively low and the implementation difficulty is small, the oiling method is basically implemented in the production of the multi-hydrogen bond fiber at present. However, the process of applying the preparation also has the following disadvantages: 1. the production cost is increased, and the production method is embodied in the aspects of raw materials of the oil agent, equipment and process for applying the oil agent and the like; 2. chemical oil components are adhered to the surface of the fiber, so that adverse effects are brought to the life and the environment of people; 3. limiting the use of the fibers in certain applications, such as in medical and hygiene applications.
Disclosure of Invention
In view of this, the invention provides an opening device for a multi-hydrogen bond fiber tow, which is convenient to operate, green and environment-friendly and low in cost when being applied to open the multi-hydrogen bond fiber tow, so that the opening device is more practical.
In order to achieve the purpose, the technical scheme of the opening device for the multi-hydrogen bond fiber tows is as follows:
the opening device for the multi-hydrogen bond fiber tows comprises a feeding disc (1), an action disc (3) and a wire outlet disc (5), wherein the feeding disc (1), the action disc (3) and the wire outlet disc (5) form an opening disc group,
a plurality of feeding holes (2) are distributed on the feeding plate (1),
a plurality of action holes (4) are distributed on the action disc (3),
a plurality of filament outlet holes (6) are distributed on the filament outlet disc (5),
the specifications of the feeding disc (1), the action disc (3) and the wire outlet disc (5) are the same,
the number and the specification of the feeding holes (2), the action holes (4) and the silk outlet holes (6) are the same,
the arrangement positions of the feeding holes (2) on the feeding disc (1), the arrangement positions of the action holes (4) on the action disc (3) and the arrangement positions of the wire outlet holes (6) on the wire outlet disc (5) are in one-to-one correspondence,
the planes of the feeding disc (1), the action disc (3) and the silk outlet disc (5) are parallel to each other, the multi-hydrogen bond fiber tows (7) sequentially pass through the feeding hole (2), the action hole (4) and the silk outlet hole (6),
during application, the action disc (3) can act.
The opening device for the multi-hydrogen bond fiber tows provided by the invention can be further realized by adopting the following technical measures.
Preferably, the opening device of the multi-hydrogen bond fiber tows further comprises a driving device,
the output shaft of the driving device is fixedly connected with the action disc (3).
Preferably, the opening disc group comprises a plurality of groups, and the plurality of groups of opening disc groups are connected in series.
Preferably, the opening device of the multi-hydrogen bond fiber tows further comprises a first tow inlet roller (8), a second tow inlet roller (9), a first drafting roller (10) and a second drafting roller (11),
the first wire inlet roller (8) and the second wire inlet roller (9) are arranged in front of the opening disc group, and the multi-hydrogen bond fiber tows (7) are guided into the opening disc group from a gap between the first wire inlet roller (8) and the second wire inlet roller (9);
the first drafting roller (10) and the second drafting roller (11) are arranged behind the opening disc group, and the multi-hydrogen bond fiber tows (7) are led out from a gap between the first drafting roller (10) and the second drafting roller (11).
Preferably, the feeding disc (1), the action disc (3) and the wire outlet disc (5) are all made of materials with smooth surfaces.
Preferably, the material with a smooth surface is selected from glass or ceramic.
Preferably, the driving device is a rotating motor, and an output shaft of the rotating motor is located in a central connecting direction of the feeding disc (1), the action disc (3) and the wire discharging disc (5), so that the action disc (3) rotates periodically by taking the central connecting direction of the feeding disc (1), the action disc (3) and the wire discharging disc (5) as a rotating shaft.
Preferably, the total titer of the single tows in the multi-hydrogen bond fiber tows (7) is less than or equal to 400000 dtex.
Preferably, the multi-hydrogen bond fiber tows (7) are selected from one of natural regenerated fiber tows of regenerated cellulose fibers, alginate fibers, chitin fibers and protein fibers.
Preferably, the diameter of the multi-hydrogen bond fiber tows (7) is defined as R, and the diameters of the feeding hole (2), the action hole (4) and the filament outlet hole (6) are all R, so that R is less than or equal to R and less than or equal to 3R.
Preferably, R is not more than R not more than (1.1 to 1.5) R.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of an opening device for a multi-hydrogen bond fiber tow according to an embodiment of the present invention, in which an action disc is in a stationary position during an application process;
fig. 2 is a schematic structural diagram of an action disc in an action position in an application process of the opening device for the multi-hydrogen bond fiber tows, provided by the embodiment of the invention;
fig. 3 is a schematic state diagram of the multi-hydrogen bond fiber tow when the action disc is in a stationary position in an application process of the opening device for the multi-hydrogen bond fiber tow according to the embodiment of the present invention;
fig. 4 is a schematic diagram of a state of a multi-hydrogen bond fiber tow when an action disc is in an action position in an application process of the opening device for the multi-hydrogen bond fiber tow according to the embodiment of the invention;
fig. 5 is a schematic diagram of a series structure of the opening device for the multi-emotion fiber tows, provided by the embodiment of the present invention, when 2 action points are provided in an application process;
fig. 6 is a schematic diagram of a state of a multi-hydrogen bond fiber tow when the opening device for the multi-hydrogen bond fiber tow provided by the embodiment of the invention has 2 action points in an application process;
FIG. 7 is a schematic structural diagram of a feeding disc applied to an opening device of a multi-hydrogen bond fiber tow provided by an embodiment of the invention;
fig. 8 is a schematic diagram illustrating the result of an action plate applied in an opening device of a multi-hydrogen bond fiber tow provided by an embodiment of the invention;
fig. 9 is a schematic structural diagram of a filament outlet disc applied to an opening device of a multi-hydrogen bond fiber tow provided by an embodiment of the invention;
fig. 10 is a schematic structural diagram of an opening device for a multi-hydrogen bond fiber tow provided by an embodiment of the invention when the opening device is applied in cooperation with a fiber feeding roller and a drafting roller.
Detailed Description
The invention aims to solve the problems in the prior art, and provides the opening device for the multi-hydrogen bond fiber tows.
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the device for opening a multi-hydrogen bond fiber tow according to the present invention, with reference to the accompanying drawings and preferred embodiments, will be made in detail. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, with the specific understanding that: both a and B may be included, a may be present alone, or B may be present alone, and any of the three cases can be provided.
Referring to attached drawings 1-10, the opening device for the multi-hydrogen bond fiber tows provided by the embodiment of the invention comprises a feeding disc 1, an action disc 3 and a wire outlet disc 5, wherein the feeding disc 1, the action disc 3 and the wire outlet disc 5 form an opening disc group. The feeding disc 1 is provided with a plurality of feeding holes 2, the action disc 3 is provided with a plurality of action holes 4, the filament outlet disc 5 is provided with a plurality of filament outlet holes 6, the specifications of the feeding disc 1, the action disc 3 and the filament outlet disc 5 are the same, the number and the specification of the feeding holes 2, the number and the specification of the action holes 4 and the filament outlet holes 6 are the same, the arrangement positions of the feeding holes 2 on the feeding disc 1, the arrangement positions of the action holes 4 on the action disc 3 and the arrangement positions of the filament outlet holes 6 on the filament outlet disc 5 are in one-to-one correspondence, the planes of the feeding disc 1, the action disc 3 and the filament outlet disc 5 are parallel to each other, and the multi-hydrogen bond fiber tows 7 sequentially pass through the feeding holes 2, the action holes 4 and the filament outlet holes 6. During application, the action disk 3 can act.
The opening device of the multi-hydrogen bond fiber tows further comprises a driving device. The output shaft of the drive device is fixedly connected to the operating disk 3. In this case, the operation panel 3 can be operated by the driving device without manually operating the operation panel 3, and therefore, human resources can be saved.
Wherein, opening the dish group and including the multiunit, establish ties between the multiunit opening dish group. In this case, the opening operation can be carried out simultaneously for a plurality of points of action on the multi-hydrogen bond fiber tow 7.
The opening device for the multi-hydrogen bond fiber tows further comprises a first tow inlet roller 8, a second tow inlet roller 9, a first drafting roller 10 and a second drafting roller 11. The first silk feeding roller 8 and the second silk feeding roller 9 are arranged in front of the opening disc group, and the multi-hydrogen bond fiber tows 7 are guided into the opening disc group from a gap between the first silk feeding roller 8 and the second silk feeding roller 9; the first drafting roller 10 and the second drafting roller 11 are arranged behind the opening disc group, and the multi-hydrogen bond fiber tows 7 are led out from a gap between the first drafting roller 10 and the second drafting roller 11. In this case, the multi-hydrogen bond fiber tows 7 are not required to be manually guided into the feeding disc 1, the action disc 3 and the filament outlet disc 5, but the multi-hydrogen bond fiber tows 7 can be fixed through the feeding roller consisting of the first filament inlet roller 8 and the second filament inlet roller 9 and the drafting roller consisting of the first drafting roller 10 and the second drafting roller 11, so that the manpower resource can be saved, and the multi-hydrogen bond fiber tows 7 can be uniformly stressed on the stroke passing through the feeding disc 1, the action disc 3 and the filament outlet disc 5.
Wherein, the feeding disc 1, the action disc 3 and the silk outlet disc 5 are all made of materials with smooth surfaces. In this case, because the feeding disc 1, the action disc 3 and the filament output disc 5 are all made of materials with smooth surfaces, when the multi-hydrogen bond fiber tows 7 pass through the feeding disc 1, the action disc 3 and the filament output disc 5, the multi-hydrogen bond fiber tows 7 are not interfered, and the multi-hydrogen bond fiber tows 7 are not broken in the process of being opened by the opening device due to overlarge friction between the multi-hydrogen bond fiber tows 7 and the feeding disc 1, the action disc 3 and the filament output disc 5. The material with smooth surface used in this embodiment is selected from glass or ceramic.
The driving device is a rotating motor, an output shaft of the rotating motor is positioned in the direction of a central connecting line of the feeding disc 1, the action disc 3 and the wire discharging disc 5, so that the action disc 3 rotates periodically by taking the direction of the central connecting line of the feeding disc 1, the action disc 3 and the wire discharging disc 5 as a rotating shaft. In this case, it is convenient to operate the rotating electrical machine without converting the rotating motion of the rotating electrical machine by the motion converting assembly.
Wherein the total titer of single tows in the multi-hydrogen bond fiber tow 7 is less than or equal to 400000 dtex.
Wherein the diameter of the multi-hydrogen bond fiber tows 7 is defined as R, the diameters of the feeding hole 2, the action hole 4 and the filament outlet hole 6 are all R, and R is not less than R and not more than 3R. In the embodiment, R is not less than R and not more than 1.1-1.5R.
The invention discloses a using method of the opening device, which comprises the following steps:
1) the tows sequentially pass through a feeding roller (comprising a first tow inlet roller 8 and a second tow inlet roller 9), a feeding disc 1, a motion disc 3, a tow outlet disc 5 and a drafting roller (comprising a first drafting roller 10 and a second drafting roller 11), and each tow passes through holes at the same position of each disc;
2) the tows keep moving forward under the driving of a drafting roller (comprising a first drafting roller 10 and a second drafting roller 11), and the action disc 3 makes periodic relative motion relative to the feeding disc 1 and the filament discharging disc 5;
3) the tension of the tows in the device is adjusted, so that the multi-hydrogen bond fiber tows 7 are tightly contacted with the circular holes of the feeding disc 1, the action disc 3 and the filament outlet disc 5 without obviously damaging the tows.
4) The motion frequency of the action disc 3 is adjusted, so that the multi-hydrogen bond fiber tows 7 are sequentially bent in different directions, adhesion among fibers is effectively prevented or disassembled, and the purpose of opening is achieved.
In the method, the periodic relative motion of the action disc 3 is the circular motion taking the central connecting line of the feeding disc 1 and the wire outlet disc 5 as the shaft. In this case, the operation is simple and easy to realize.
The multi-hydrogen bond fiber tow 7 is selected from fiber varieties containing hydrogen bond action, and in the embodiment, the multi-hydrogen bond fiber tow 7 is selected from one of natural regenerated fiber tows of regenerated cellulose fibers, alginate fibers, chitin fibers and protein fibers.
The multi-hydrogen bond fiber tows refer to fiber tows of which the total titer of single tows is less than or equal to 400000 dtex.
During the drying process after the fibers are formed, hydrogen bonding exists between macromolecules in the contact area between the fibers, and the macromolecules are retained along with the completion of the drying. This action falls into the category of physical forces that can be effectively broken down by applying relative motion between the fibers, thereby improving the previously sticky and stiff state.
The equipment for opening the multi-hydrogen bond fiber tows is based on the following principle: the tow with a certain thickness changes the relative position of the fibers inside and outside the curvature when being bent by external force. The equipment bends the fiber tows point by point for many times, so that all fibers in the tows can slide relatively, the formation of adhesion points among the fibers is prevented or the adhesion points formed among the fibers are disassembled, and the purpose of opening the fibers is achieved.
Compared with the currently generally adopted oiling agent method, the equipment and the using method have the following advantages: 1. no micromolecular chemical substance is attached to the fiber, so that the auxiliary agent cost is saved, and the fiber has the advantage of environmental protection; 2. the application field of the promotion fiber can be directly and conveniently extended to the medical and sanitary fields; 3. simple process equipment, convenient operation, low cost and huge application potential.
Example 1:
setting the distance between an action disc of an opening device and a feeding disc and a silk outlet disc to be 1cm, setting the hole diameters of a feeding hole, an action hole and a silk outlet hole to be 5mm, taking 50000dtex alginate fiber tows which are in a dried unopened state and have obvious adhesion and hardness characteristics, sequentially passing the tows through the feeding hole, the action hole and the silk outlet hole of the device after passing through a feeding roller, drawing by a drawing roller, keeping the fiber tension at 200g, starting a tow drawing device to enable the tows to move forward at the speed of 10m/min, then starting the opening device, periodically rotating the action disc at the speed of 40 revolutions per second along a circumferential track with the diameter of 2cm, enabling the tows to become soft after sequentially passing through the opening device, and basically eliminating the adhesion and hardness phenomena before opening, so that the fibers are well opened.
Example 2:
the method comprises the steps of adopting an opening device which is formed by serially arranging two sets of feeding disks, action disks and a silk outlet disk, setting the distance between the action disks and the feeding disks and the silk outlet disk to be 1cm, setting the hole diameters of a feeding hole, an action hole and a silk outlet hole to be 1cm, taking 100000dtex regenerated cellulose fiber tows, enabling the tows to pass through the feeding hole, the action hole and the silk outlet hole of the device in sequence after passing through a feeding roller, drawing the tows by a drawing roller, keeping the fiber tension at 1000g, opening a tow drawing device to enable the tows to move forward at the speed of 30m/min, then the opening device is started, the action disc periodically oscillates along a circumference track with the diameter of 5cm at the speed of 60 revolutions per second, the tows become soft after sequentially passing through the opening device, the phenomena of adhesion and induration before opening are basically eliminated, and the fibers are well opened.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The opening device for the multi-hydrogen bond fiber tows is characterized by comprising a feeding disc (1), an action disc (3) and a wire outlet disc (5), wherein the feeding disc (1), the action disc (3) and the wire outlet disc (5) form an opening disc group,
a plurality of feeding holes (2) are distributed on the feeding plate (1),
a plurality of action holes (4) are distributed on the action disc (3),
a plurality of filament outlet holes (6) are distributed on the filament outlet disc (5),
the specifications of the feeding disc (1), the action disc (3) and the wire outlet disc (5) are the same,
the number and the specification of the feeding holes (2), the action holes (4) and the silk outlet holes (6) are the same,
the arrangement positions of the feeding holes (2) on the feeding disc (1), the arrangement positions of the action holes (4) on the action disc (3) and the arrangement positions of the wire outlet holes (6) on the wire outlet disc (5) are in one-to-one correspondence,
the planes of the feeding disc (1), the action disc (3) and the silk outlet disc (5) are parallel to each other, the multi-hydrogen bond fiber tows (7) sequentially pass through the feeding hole (2), the action hole (4) and the silk outlet hole (6),
during application, the action disc (3) can act.
2. The opening device of the multi-hydrogen bond fiber tows as claimed in claim 1, further comprising a driving device,
the output shaft of the driving device is fixedly connected with the action disc (3).
3. The opening device of multi-hydrogen bond fiber tows as claimed in claim 1, wherein the opening disc groups comprise a plurality of groups, and the groups of opening disc groups are connected in series.
4. The opening device of the multi-hydrogen bond fiber tows, according to the claim 1, is characterized by further comprising a first tow inlet roller (8), a second tow inlet roller (9), a first drafting roller (10) and a second drafting roller (11),
the first wire inlet roller (8) and the second wire inlet roller (9) are arranged in front of the opening disc group, and the multi-hydrogen bond fiber tows (7) are guided into the opening disc group from a gap between the first wire inlet roller (8) and the second wire inlet roller (9);
the first drafting roller (10) and the second drafting roller (11) are arranged behind the opening disc group, and the multi-hydrogen bond fiber tows (7) are led out from a gap between the first drafting roller (10) and the second drafting roller (11).
5. The opening device of the multi-hydrogen bond fiber tows, according to the claim 1, is characterized in that the feeding disc (1), the action disc (3) and the silk outlet disc (5) are all made of materials with smooth surfaces.
6. The multi-hydrogen bond fiber tow opening device according to claim 5, wherein the material with a smooth surface is selected from glass or ceramic.
7. The opening device of the multi-hydrogen bond fiber tows, according to the claim 2, is characterized in that the driving device is a rotating motor, an output shaft of the rotating motor is located in the central connecting line direction of the feeding disc (1), the action disc (3) and the output disc (5), so that the action disc (3) rotates periodically by taking the central connecting line direction of the feeding disc (1), the action disc (3) and the output disc (5) as a rotating shaft.
8. Device for opening of a bundle of multi-hydrogen bond fibers according to claim 1, characterized in that the bundle of multi-hydrogen bond fibers (7) has a total titer of the bundle of single fibers of 400000 dtex.
9. Device for opening multi-hydrogen bond fiber tows according to claim 1, characterized in that the multi-hydrogen bond fiber tows (7) are selected from one of regenerated cellulose fibers, alginate fibers, chitin fibers, protein fibers.
10. The device for opening a multi-hydrogen bond fiber tow according to claim 1,
the diameter of the tows in the multi-hydrogen bond fiber tows (7) is defined as R, the diameters of the feeding hole (2), the action hole (4) and the filament outlet hole (6) are all R, and R is larger than or equal to R and smaller than or equal to 3R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810770212.6A CN109097885B (en) | 2018-07-13 | 2018-07-13 | Opening device for multi-hydrogen bond fiber tows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810770212.6A CN109097885B (en) | 2018-07-13 | 2018-07-13 | Opening device for multi-hydrogen bond fiber tows |
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| Publication Number | Publication Date |
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| CN109097885A CN109097885A (en) | 2018-12-28 |
| CN109097885B true CN109097885B (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810770212.6A Active CN109097885B (en) | 2018-07-13 | 2018-07-13 | Opening device for multi-hydrogen bond fiber tows |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2737688A (en) * | 1953-05-25 | 1956-03-13 | Eastman Kodak Co | Tow opening device |
| US3796035A (en) * | 1967-07-03 | 1974-03-12 | Celanese Corp | Semi-continuous filament combination yarn |
| JPS52148229A (en) * | 1976-04-27 | 1977-12-09 | Tokyo Kougiyou Daigakuchiyou | Defiberizing apparatus for tow *bundle of filament* |
| DE3277865D1 (en) * | 1982-07-19 | 1988-02-04 | Boeing Co | Method and apparatus for fiber lamination |
| US5101542A (en) * | 1989-04-05 | 1992-04-07 | Ube Industries, Ltd. | Fiber separator for producing fiber reinforced metallic or resin body |
| US5944949A (en) * | 1997-11-12 | 1999-08-31 | Lucent Technologies Inc. | Method and apparatus for separating one or more optical fibers from an optical fiber ribbon |
| JP5326170B2 (en) * | 2009-05-25 | 2013-10-30 | 福井県 | Fiber bundle opening method, spread yarn sheet, and fiber reinforced sheet manufacturing method |
| DE102013218102A1 (en) * | 2013-09-10 | 2015-03-12 | Thermoplast Composite Gmbh | Device for the twist-free width change of a sliver passing through the device as well as a system comprising a plurality of such devices |
| JP6203644B2 (en) * | 2014-01-06 | 2017-09-27 | 株式会社ダイセル | Spreading body widening unit, width adjusting jig, and opening body manufacturing method |
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