JP7446712B2 - Sheet member manufacturing method and sheet member manufacturing device - Google Patents

Description

The present invention relates to a sheet member manufacturing method and a sheet member manufacturing apparatus.

In order to make absorbent articles such as sanitary napkins and disposable diapers soft to the touch, Patent Document 1 discloses the use of a nonwoven composite low-density fabric in which a woven fabric and a nonwoven fabric are intertwined.

Japanese Patent Application Publication No. 11-170413

However, in the manufacturing process of a nonwoven composite low-density fabric as shown in Patent Document 1, the fibers constituting the nonwoven fabric that are intertwined with the fabric are light materials and are susceptible to external influences such as during transportation. Unevenness is likely to occur due to differences in color, which may impair the aesthetic appearance.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to reduce the possibility of uneven fiber density of fiber aggregates intertwined in a woven fabric.

The main invention for achieving the above purpose is:
A method for producing a sheet member for an absorbent article comprising a woven fabric and a fiber aggregate intertwined with the woven fabric, the method comprising:
The sheet member is a sanitary napkin, a vaginal discharge sheet, a urine absorbing pad, or a top sheet of a disposable diaper,
a first conveyance step of conveying at least the fiber aggregate using a conveyor;
a second conveyance step of further conveying the textile and the fiber aggregate conveyed in the first conveyance step using a rotating body having a suction mechanism,
In the first conveyance step,
The conveyor does not convey the textile,
In the second conveyance step,
Conveying the textile in contact with the peripheral surface of the rotating body,
injecting fluid from the outside in the radial direction of the rotating body to the inside to entangle the fiber aggregate in the textile;
In the first conveyance step, a process is performed to reduce the thickness of the fiber aggregate,
The treatment for reducing the thickness of the fiber aggregate is a fluid injection treatment,
The pressure of the fluid injected by the upstream injection port disposed on the upstream side in the rotational direction of the rotating body is
The pressure is equal to or lower than the pressure of the fluid injected by a downstream injection port disposed on the downstream side in the rotational direction of the rotating body,
The length of the textile in the direction of the rotational axis of the rotating body is shorter than the length of the fiber aggregate in the direction of the rotational axis,
After the second conveyance step, there is a cutting step of cutting both ends of the fiber aggregate in the direction of the rotation axis along a pair of cutting lines located inside both ends of the fabric.
This is a method of manufacturing a sheet member characterized by the following.
Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

According to such a method of manufacturing a sheet member, it is possible to reduce the risk of uneven fiber density of the fiber aggregate entangled in the fabric.

FIG. 1 is a plan view of the sanitary napkin 1 viewed from the skin side. FIG. 2 is a plan view of the sanitary napkin 1 viewed from the non-skin side. FIG. 3 is a sectional view taken along line XX in FIG. FIG. 4 is a partially enlarged view of the topsheet 3. FIG. 5 is a diagram showing a state in which the topsheet 3 is separated into a fabric 40 and a fiber aggregate 50. FIG. 6 is a diagram schematically showing a part of the manufacturing apparatus 100 used in the method for manufacturing the sheet member 70 of the first embodiment. FIG. 7 is a diagram schematically showing the water supply device 200. FIG. 8 is a diagram schematically showing a cross section of the first rotating body 150. FIG. 9a is a diagram schematically showing the injection nozzle 302. FIG. 9b is a diagram schematically showing a configuration example of the nozzle hole of the injection nozzle 302. FIG. 10 is a diagram schematically showing a cross section of the sheet 60 in the CD direction at A in FIG. 6. As shown in FIG. FIG. 11 is a diagram schematically showing a part of the manufacturing apparatus 101 used in the method of manufacturing the sheet member 70 of the second embodiment. FIG. 12 is a diagram schematically showing a part of the manufacturing apparatus 102 used in the method for manufacturing the sheet member 70 of the third embodiment. FIG. 13 is a diagram schematically showing a cross section in the CD direction of a sheet 60 in another embodiment.

From the description of this specification and the attached drawings, at least the following matters will become clear.
A method for producing a sheet member for an absorbent article comprising a woven fabric and a fiber aggregate intertwined with the woven fabric, the first conveying step of conveying at least the fiber aggregate using a conveyor. and a second conveyance step of further conveying the textile and the fiber aggregate conveyed in the first conveyance step using a rotating body having a suction mechanism, and in the second conveyance step, A sheet characterized in that the textile is conveyed in contact with the circumferential surface of the rotating body, and a fluid is jetted from the outside in the radial direction of the rotating body to the inside to entangle the fiber aggregate with the textile. This is a method for manufacturing a member.

According to such a method of manufacturing a sheet member, it is possible to reduce the risk of uneven fiber density of the fiber aggregate intertwined in the fabric.

In this method of manufacturing a sheet member, it is preferable that the circumferential speed of the rotating body is higher than the moving speed of the conveyor.

According to such a method of manufacturing a sheet member, the fibers of the fiber assembly can be easily moved in the conveying direction, thereby reducing the possibility of uneven fiber density of the fiber assembly intertwined with the fabric.

In the method for manufacturing such a sheet member, the pressure of the fluid injected by the upstream injection port disposed on the upstream side of the rotation of the rotary body is increased by the pressure of the fluid injected by the upstream injection port disposed on the downstream side of the rotation of the rotary body. It is desirable that the pressure be less than or equal to the pressure of the fluid ejected by the mouth.

According to such a method of manufacturing a sheet member, the fibers of the fiber assembly can be entangled with the woven fabric while reducing the fear that the fibers will be blown away by the jetted fluid.

In this method of manufacturing a sheet member, the conveyance surface of the conveyor is provided at the same height as the rotation center of the rotating body or at a position higher than the rotation center, and immediately after the start of conveyance in the second conveyance step, Preferably, the fiber aggregate is conveyed upward along the rotational direction of the rotating body.

According to such a method of manufacturing a sheet member, it is possible to reduce the possibility that fibers in the fiber assembly become uneven due to conveyance.

In this method of manufacturing a sheet member, it is preferable that the length of the fabric in the direction of the rotation axis of the rotating body is equal to or less than the length of the fiber aggregate in the direction of the rotation axis.

According to such a method of manufacturing a sheet member, even if the fiber density at the ends in the width direction of the fiber aggregate is not stable, it is possible to reduce the risk of cutting off the fabric.

In this method of manufacturing a sheet member, the conveying surface of the conveyor is provided below the rotation center of the rotating body, and the rotating body is disposed between the first conveying step and the second conveying step. It is desirable to further include a passing step in which the fiber aggregate passes through a position closest to the transport conveyor.

According to such a method of manufacturing a sheet member, it is possible to reduce the possibility that fibers in the fiber assembly become uneven due to conveyance.

In this method of manufacturing a sheet member, it is desirable that the length of the textile in the direction of the rotational axis of the rotating body is equal to or longer than the length of the fiber aggregate in the direction of the rotational axis.

According to such a method of manufacturing a sheet member, the fiber aggregate conveyed by the rotating body is placed on a fabric having a width equal to or larger than that of the fiber aggregate, so that the fiber aggregate can be conveyed in a more stable state.

In this method of manufacturing a sheet member, in the first conveying step, the conveyor does not convey the textile, and before the second conveying step, a supplying step of supplying the textile to the rotating body is performed. It is desirable to have one.

According to such a method of manufacturing a sheet member, it is possible to reduce the possibility that fibers in the fiber assembly become uneven due to conveyance.

In the method for manufacturing such a sheet member, it is preferable that in the supplying step, the woven fabric fed out by rotation of a supply rotary body is supplied to the rotary body with a constant tension.

According to such a method of manufacturing a sheet member, it is possible to reduce the risk of uneven fiber density of the fiber aggregate entangled in the fabric.

In this method of manufacturing a sheet member, the circumferential speed of the supply rotating body is equal to the circumferential speed of the rotating body, and the circumferential speed of the rotating body is faster than the moving speed of the conveyor. desirable.

According to such a method of manufacturing a sheet member, it is possible to reduce the possibility that fibers in the fiber assembly become uneven due to conveyance.

In this method of manufacturing a sheet member, it is desirable that a process for reducing the thickness of the fiber aggregate be performed in the first conveyance step.

According to such a method of manufacturing a sheet member, it is possible to reduce the possibility that unevenness of fibers in the fiber aggregate will occur.

In the method for manufacturing such a sheet member, it is preferable that the treatment for reducing the thickness of the fiber aggregate is a fluid injection treatment.

According to such a method of manufacturing a sheet member, it is possible to reduce the possibility that the fibers of the fiber aggregate will be uneven.

In the method for manufacturing such a sheet member, the treatment for reducing the thickness of the fiber aggregate may include passing the fiber aggregate between the conveyor and the rotating body that face each other. desirable.

According to such a method of manufacturing a sheet member, it is possible to reduce the possibility that unevenness of fibers in the fiber aggregate will occur.

An apparatus for manufacturing a sheet member for an absorbent article comprising a woven fabric and a fiber aggregate intertwined with the woven fabric, the apparatus comprising: a conveyor for conveying at least the fiber aggregate; the woven fabric; and the conveyor. A rotary body equipped with a suction mechanism that conveys the fiber aggregate conveyed by a conveyor with the fabric in contact with the peripheral surface, and a fluid is jetted from the outside in the radial direction of the rotary body toward the inside. An apparatus for producing a sheet member, comprising: an interlacing section that intertwines the fiber aggregate with the woven fabric.

According to such a sheet member manufacturing apparatus, it is possible to reduce the possibility of uneven fiber density of the fiber aggregate intertwined in the fabric.

===Embodiment===
<Configuration of sanitary napkin 1>
Hereinafter, embodiments will be described using sanitary napkins as an example of the absorbent article of the present invention, but the present invention is not limited thereto, and other absorbent articles such as vaginal discharge sheets, urine absorbing pads, disposable diapers, etc. It is also applicable to

FIG. 1 is a plan view of a sanitary napkin 1 (hereinafter also referred to as "napkin 1") viewed from the skin side. FIG. 2 is a plan view of the sanitary napkin 1 viewed from the non-skin side. FIG. 3 is a sectional view taken along line XX in FIG. The napkin 1 has a front-rear direction, a width direction, and a thickness direction that are orthogonal to each other. In the front-back direction, the side that comes into contact with the wearer's lower abdomen is called the front side, and the side that comes into contact with the buttocks is called the back side. In the thickness direction, the side that contacts the wearer is called the skin side, and the opposite side is called the non-skin side.

As shown in FIGS. 1, 2, and 3, the napkin 1 has a pair of side sheets 5, a top sheet 3, an absorbent body 2, and a back sheet 4 laminated in order from the skin side in the thickness direction. ing. The topsheet 3 and the absorbent core 2 are bonded to each other using a known bonding means such as hot melt adhesive. The top sheet 3 and the back sheet 4 have a planar size larger than the absorbent core 2 and cover the entire flat surface of the absorbent core 2. Further, the top sheet 3, back sheet 4, and side sheet 5 that are stacked on each other are joined to each other via an outer peripheral seal portion 8 along the outer peripheral edge of the napkin 1. The pair of side sheets 5 are provided on both sides in the width direction, are arranged along the front-rear direction on the skin side of the top sheet 3, and are joined to the top sheet 3 by known adhesive means or welding means.

The napkin 1 has a pair of wing portions 6 extending from the central region of the napkin 1 in the front-rear direction to both outer sides in the width direction. The wing portion 6 is formed by a side sheet 5 and a back sheet 4 extending outward from both sides of the top sheet 3 in the width direction. Note that the napkin 1 may have a form without the wing portions 6.

The non-skin side of the napkin 1 (the non-skin side of the back sheet 4) is provided with an adhesive area 11 to which an adhesive is applied. The adhesive area 11 is attached to the side of the skin of underwear or the like when the napkin 1 is used, thereby fixing the napkin 1 to the underwear or the like. The shape and number of adhesive areas 11 can be changed arbitrarily.

Similarly, a wing adhesive region 12 is provided on the non-skin side surface of each wing portion 6 (the non-skin side surface of the back sheet 4). The wing adhesive region 12 is attached to the non-skin side of underwear or the like when the napkin 1 is used, and the napkin 1 is fixed to the underwear or the like. The shape and number of wing adhesive regions 12 can be changed as desired.

The top sheet 3 is liquid permeable and is composed of a fabric 40 and a fiber aggregate 50. The back sheet 4 can be formed from a liquid-impermeable and moisture-permeable plastic film, a liquid-impermeable nonwoven fabric, a laminate sheet thereof, or the like. For the side sheet 5, a known nonwoven fabric can be used.

The absorbent body 2 is a member that absorbs excrement such as menstrual blood and holds it inside, and includes an absorbent core 10 that absorbs liquid and a liquid-permeable core wrap sheet 20 that covers the entire absorbent core 10. have. The absorbent core 10 is made by adding liquid-absorbing granules such as superabsorbent polymer (so-called SAP) to liquid-absorbing fibers such as pulp fibers and cellulose-based absorbent fibers, and forming the mixture into a predetermined shape. There is. The core wrap sheet 20 is a liquid-permeable sheet, and examples thereof include tissue and airlaid.

<Configuration of top sheet 3>
FIG. 4 is a partially enlarged view of the topsheet 3 viewed from the skin side, and FIG. 5 is a diagram showing the topsheet 3 separated into a fabric 40 and a fiber aggregate 50. As shown in FIGS. 4 and 5, the top sheet 3 is a sheet member in which the textile fabric 40 and the fibers of the fiber aggregate 50 are intertwined with each other (the textile fabric 40 and the fiber aggregate 50 are intertwined). be. A method for manufacturing the sheet member 70 in which the woven fabric 40 and the fiber aggregate 50 are intertwined will be described later.

As shown in FIG. 4, the fabric 40 is composed of constituent threads 41 woven in a lattice pattern. The constituent yarn 41 has a plurality of warps 42 and a plurality of wefts 43 that intersect with the warps 42, and is formed by intersecting each other in the thickness direction and is surrounded by the warps 42 and wefts 43. A plurality of textures 45, which are regions, are formed. The constituent threads 41 of the fabric 40 are twisted threads formed by twisting raw threads made of cotton threads (cotton fibers). In addition to cotton fibers, cellulose-based fibers such as natural cellulose fibers such as hemp and pulp fibers, regenerated cellulose fibers such as rayon, and semi-synthetic cellulose fibers such as acetate are preferably used as materials for the yarn. The cotton yarn used as the raw yarn preferably has a thickness of 10 to 100 cotton. By using the fabric 40 mainly made of cotton material etc. for the top sheet 3, the wearer can feel comfortable to the touch and skin problems are less likely to occur. Note that the weaving method of the fabric 40 is not limited to a plain weave woven in a lattice pattern, and any known weaving method such as a twill weave, a satin weave, or a entangled weave can be appropriately employed.

The fiber aggregate 50 is made of fibers formed by a known manufacturing method such as a spunbond method using long fibers or a dry method in which short fibers are carded in a certain direction with a carding machine and the fibers are arranged to form a web. It is an aggregate and is in a state before being formed into a nonwoven fabric. Further, the fiber assembly 50 is formed from constituent fibers 51 including hydrophilic fibers. The constituent fibers 51 are a soft and light material, and are irregularly assembled aggregates. Examples of the hydrophilic fibers include regenerated cellulose fibers such as rayon and fibrillar rayon, natural cellulose fibers such as cotton and pulverized pulp, and semi-synthetic celluloses such as acetate. Furthermore, the fiber aggregate 50 is not limited to the one formed by a carding method using a carding machine, but may also be a fiber aggregate 50 formed by an air-laid method, a wet method, a spunbond method, a melt-blown method, or the like. The fiber density of the fiber aggregate 50 is, for example, 2.8 to 3.5×10 ⁻³ g/cm ³ , and the basis weight (weight per unit area) is, for example, 20 to 70 g/m ² . The thickness of the fiber assembly 50 is, for example, 7 to 20 mm, and the length of the fibers of the fiber assembly 50 is, for example, 1 to 100 mm. Further, the fineness of the fiber aggregate 50 is, for example, 0.1 to 6 dtex.

<Method for manufacturing sheet member 70 of first embodiment>
A continuous sheet member 70 is manufactured by intertwining and integrating a continuous woven fabric 40 with a fiber aggregate 50 manufactured by a fiber aggregate manufacturing apparatus (not shown), and then producing a continuous sheet member 70. The top sheet 3 is formed by performing a cutting process to form the member 70 into a predetermined shape. However, there is a risk that the sheet member 70 after manufacturing may have unevenness due to the difference in fiber density of the fiber aggregates 50. In this regard, a method for manufacturing the sheet member 70 that reduces unevenness will be described below. In addition, in the following description, the woven fabric 40 and the sheet member 70 will be described as being in a continuous state.

FIG. 6 is a diagram schematically showing a part of the manufacturing apparatus 100 used in the method for manufacturing the sheet member 70 of the first embodiment. The manufacturing apparatus 100 is an apparatus that manufactures a sheet member 70 in which a fiber aggregate 50 and a fabric 40 are entangled and integrated. The manufacturing apparatus 100 includes, from the upstream side in the conveying direction, an upstream conveying device 130, a water supply device 200, a first rotating body 150 and a first injection device 300, a second rotating body 160 and a second injection device 400, and a downstream conveying device. 140, a dehydrator 250, and a cutting device 500. The manufacturing apparatus 100 transports the fabric 40 and the fiber aggregate 50 in a transport direction, and the direction perpendicular to the transport direction is referred to as the "CD direction".

<<First transport step>>
The first conveyance step is a step of conveying at least the fiber aggregate 50 using the upstream conveyance device 130. The upstream conveyance device 130 includes an upstream conveyor belt 130a (also referred to as a "conveyor") and rolls 130b. The upstream conveyance belt 130a is a conveyance section that conveys the fabric 40 and the fiber aggregate 50 along a predetermined conveyance path. The fabric 40 and the fiber aggregate 50 are conveyed by placing the fabric 40 in contact with the upstream conveyor belt 130a, and further placing the fiber aggregate 50 thereon. Then, it passes under the roll 130b and is conveyed toward the first rotating body 150. Note that the length of the fabric 40 in the CD direction is shorter than the length of the fiber aggregate 50 in the CD direction. In other words, when the upstream conveyor belt 130a is viewed from above, the fabric 40 is conveyed in a state where substantially the entire area thereof is covered with the fiber aggregate 50.

The water supply device 200 is a device that sprays water f, which is a fluid, and is provided above the upstream conveyor belt 130a. FIG. 7 is a diagram schematically showing the water supply device 200. In FIG. 7, the upstream conveyance device 130 and the like are omitted. The water supply device 200 supplies water f toward the upstream conveyor belt 130a to moisten the fiber aggregate 50 being conveyed by the upstream conveyor belt 130a, thereby reducing the thickness of the fiber aggregate 50. The fibers of the fiber assembly 50 are a light and soft material, and to put it simply, they are in a fluffy state, so they may move during transportation until the fabric 40 is intertwined, or they may be moved by the first injection device 300 in a later step. The fibers may be blown away by the pressure of the jet of water, and there is a risk that the number of fibers may increase or decrease in some areas. Therefore, it is preferable to wet the fibers by spraying water f onto the fiber aggregate 50 in advance in the first conveyance step to reduce the thickness of the fiber aggregate 50, thereby making it difficult for the fibers to move. That is, since the purpose of the water supply device 200 is to impregnate the fiber aggregate 50 with water, the fiber aggregate 50 is not intertwined with the fabric 40 at this point. Thereby, it is possible to reduce the possibility that the fibers in the fiber aggregate 50 of the manufactured sheet member 70 will be uneven due to uneven fiber density due to the conveyance during the first conveyance step. Note that the fiber aggregate 50 may be moistened with water by dropping water, spraying water, or submerging the fiber aggregate 50 in a container filled with water.

Further, when delivering the fabric 40 and the fiber aggregate 50 from the upstream conveyance device 130 to the first rotating body 150, the fiber aggregate 50 is passed through the gap between the roll 130b and the upstream conveyance belt 130a, which face each other. let By sandwiching the fiber aggregate 50 between the roll 130b and the upstream conveyor belt 130a, the fiber aggregate 50 can be crushed in the thickness direction, the thickness of the fiber aggregate 50 can be reduced, and the movement of the fibers can be calmed. good. As a result, it is possible to reduce the possibility that the fibers move during the first conveyance step and cause uneven fiber density, and also to reduce the possibility that the fibers of the fiber aggregate 50 of the sheet member 70 after manufacturing are uneven. can.

In addition, in this embodiment, although the thickness of the fiber aggregate 50 was made thin using the water supply device 200 and the roll 130b, it is not restricted to this. Further, the manufacturing apparatus 100 may not include the water supply device 200, and may not have a configuration in which the roll 130b and the upstream conveyance belt 130a face each other with the fiber aggregate 50 interposed therebetween.

<<Second transport step>>
The second conveyance step is a step in which the fiber aggregate 50 and the fabric 40 conveyed in the first conveyance step are further conveyed by the rotation of the first rotating body 150, and the fibers of the fiber aggregate 50 are intertwined with the fabric 40. be. The step of entangling and intertwining the fibers of the fiber aggregate 50 with the fabric 40 is also referred to as the "entanglement step." The intertwined fabric 40 and fiber aggregate 50 are referred to as a sheet 60. The sheet 60 indicates a state from a state in which at least a portion of the fiber aggregate 50 is intertwined with the fabric 40 to a state in which cutting processing is performed in a cutting step to be described later. In FIG. 6, the sheet 60 and the sheet member 70 are indicated by diagonal lines slanting downward to the right.

Since the fibers of the fiber aggregate 50 are light and have a high degree of freedom, the woven fabric 40 and the fiber aggregate are transferred from the upstream conveyance device 130 to the first rotating body 150 during conveyance from the first conveyance step to the second conveyance step. When the body 50 is delivered, the fiber density tends to change depending on the change in the conveyance state. In particular, as shown in FIG. 6, when the conveyance path has a slope, the conveyance of the fiber aggregate 50 is carried out near the roll 130b that transfers the fabric 40 and the fiber aggregate 50 from the upstream conveyor 130 to the first rotating body 150. There is a risk that the fiber density may change. If the sheet member 70 is manufactured through the interlacing step as it is, there is a risk that unevenness will occur.

In this regard, in the second conveyance step, when the textile 40 is conveyed in contact with the outer peripheral surface 150a of the first rotating body 150 and the fiber aggregate 50 is conveyed at the outermost side with respect to the conveyance surface, the fiber aggregate 50 The outer surface (the surface opposite to the side facing the fabric 40) is not restrained and is transported with a high degree of freedom. Therefore, while being transported using the first rotating body 150, the fibers of the fiber aggregate 50 are easily transported while being spread out along the transport direction. As a result, by injecting high-pressure water f using the first injection device 300 to the fiber aggregate 50 in which the fibers are more spread out with respect to the fabric 40, the fibers of the fiber aggregate 50 are uniformly spread over the fabric 40. This makes it easier to entangle the fibers in the fiber aggregate 50 that occurs in the sheet member 70 after manufacture.

Further, when the textile 40 in contact with the outer circumferential surface 150a, which is the conveying surface, is conveyed, the fiber aggregate 50 is disposed on the outer side of the first rotating body 150 in the radial direction. At this time, the fibers of the fiber aggregate 50 are in a state where they can move freely, so by making the fiber aggregate 50 easier to spread during conveyance by the first rotating body 150, the fibers of the fiber aggregate 50 can be easily moved. It is possible to reduce unevenness due to differences in fiber density of the fiber aggregate 50. Moreover, since the fiber aggregate 50 is conveyed radially outward from the fabric 40, the fibers of the fiber aggregate 50 are easily stretched in the conveyance direction. By making it easier for the fibers to spread in the transport direction, it becomes easier to reduce unevenness in fiber density.

Further, it is preferable that the circumferential speed of the first rotating body 150 is higher than the moving speed of the upstream conveyor belt 130a, and it is more preferable that the circumferential speed of the first rotating body 150 is faster than the moving speed of the upstream conveying belt 130a. If the circumferential speed of the first rotating body 150 is slower than the moving speed of the upstream conveyor belt 130a, the fabric 40 may become loose in the upstream conveyor 130, or the fibers placed on the fabric 40 may become loose. The conveyance of the aggregate 50 may also be delayed, resulting in uneven fiber density. In order to prevent this, the circumferential speed of the first rotating body 150 is set to be higher than the moving speed of the upstream conveyor belt 130a to convey the fabric 40 with appropriate tension, thereby making it easier to convey the fiber aggregate 50 in the conveying direction. It can be a state. Furthermore, by making it easier to transport the fiber aggregate 50, it becomes easier to reduce the possibility of uneven fiber density.

FIG. 8 is a diagram schematically showing a cross section of the first rotating body 150. The outer circumferential surface 150a of the first rotating body 150 is continuously driven to rotate in the circumferential direction Dc1 (for example, clockwise) about a horizontal axis C150. Note that the circumferential direction Dc1 is also the conveyance direction, and the CD direction is orthogonal to the circumferential direction Dc1. The first rotating body 150 is a substantially cylindrical body, and a plurality of intake holes 151 are provided on the circumferential surface thereof. The inner circumferential side and the outer circumferential side of the first rotating body 150 communicate with each other through an intake hole 151 so that liquid or gas can pass therethrough.

Note that it is preferable that the conveying surface of the upstream conveying belt 130a is at least the same height as the axis C150, and it is more preferable that the conveying surface of the upstream conveying belt 130a is provided at a higher position than the axis C150. By doing so, it is possible to further reduce the height difference when the fabric 40 and the fiber aggregate 50 are transferred from the upstream conveyance belt 130a to the first rotating body 150, and to further reduce the gradient that occurs in the conveyance path. Therefore, it becomes easier to reduce the deviation in the fiber density of the fiber aggregate 50.

The first rotating body 150 includes a suction mechanism. A cylindrical partition wall 152 is provided on the inner peripheral side of the first rotating body 150 and coaxially with the first rotating body 150 . On the inner peripheral side of the first rotating body 150, a donut-shaped substantially closed space SP is divided into a first region SP1, a second region SP2, and a third region SP3 in order of the circumferential direction Dc1 by a plurality of partition walls 153, 153, 153. It is sectioned. The first region SP1 and the second region SP2 on the upstream side are maintained at a negative pressure state with a pressure lower than the outside pressure, and the third region SP3 is maintained at the same pressure as the outside pressure, or the same pressure as the first region SP1 and the second region SP2. The atmospheric pressure between the outside pressure and the atmospheric pressure value. By bringing the first region SP1 and the second region SP2 into a negative pressure state, the sprayed water f is sucked toward the inner circumferential side while the woven fabric 40 and the fiber aggregate 50 are held under suction. Note that the rotation of the first rotating body 150 refers to a state in which the outer peripheral surface 150a is rotated, and the cylindrical partition wall 152 and the partition walls 153, 153, and 153 are each fixed.

A first injection device 300 is provided outside the first rotating body 150 in the radial direction. The first injection device 300 includes injection nozzles 301, 302, and 303 in order from the upstream side in the conveyance direction. The first injection device 300 injects water f toward the fabric 40 held on the outer peripheral surface 150a of the first rotating body 150 and the fiber aggregate 50 from the outside in the radial direction of the first rotating body 150 to the inside. do.

The injection nozzles 301, 302, and 303 are arranged at different positions in the conveyance direction. Since the injection nozzles 301, 302, and 303 have substantially the same basic configuration, the injection nozzle 302 will be described below. FIG. 9a is a diagram schematically showing the injection nozzle 302. FIG. 9b is a diagram schematically showing a configuration example of the nozzle hole of the injection nozzle 302. In addition, in FIG. 9a, the first rotating body 150, the injection nozzle 302, the injection nozzles 301, 303, etc. other than the textile 40, the fiber aggregate 50, etc. are omitted.

The injection nozzle 302 is arranged perpendicularly to the outer circumferential surface 150a of the first rotating body 150, and injects water f at high pressure toward the first rotating body 150. As shown in FIGS. 9a and 9b, the member 401a of the injection nozzle 302 facing the outer peripheral surface 150a is provided with a plurality of nozzle holes 301b arranged linearly and at a constant pitch in parallel to the CD direction. The water f sent from the upper part of the injection nozzle 302 is injected from the plurality of nozzle holes 301b over the entire fabric 40 and fiber aggregate 50 in the CD direction. The diameter of the nozzle holes 301b is, for example, 50 to 200 μm, and the distance between the centers of adjacent nozzle holes 301b in the CD direction is, for example, 0.2 to 2.0 mm.

In the first injection device 300, it is preferable that the pressure of the water f injected on the upstream side (injection pressure of the water stream) is equal to or lower than the pressure of the water stream injected on the downstream side, and more preferably, the injection pressure of the water stream on the upstream side is It is preferable that the injection pressure is lower than the injection pressure of the water stream on the downstream side. Specifically, the injection pressure of the water stream from the injection nozzle 301 is lower than the injection pressure of the water stream from the injection nozzle 303. In addition, in this embodiment, the injection pressure of the water stream from the injection nozzles 301, 302, and 303 increases in order from the upstream side to the downstream side in the conveyance direction. Note that the injection pressure of each water stream is preferably set within the range of 1.0 to 7.0 MPa.

When the fibers of the fiber assembly 50 are not entangled with the textile 40, the outer surface of the fiber assembly 50 (the surface opposite to the side facing the textile 40) is not constrained and has a high degree of freedom. Therefore, if the injection pressure of the water stream on the upstream side is increased, the fibers may be blown away by the injected water stream, which may damage the fiber assembly 50 or cause the fiber density of the fiber assembly 50 to become unbalanced. In this regard, the jetting pressure of the upstream water stream is set lower to reduce the risk of the fibers being blown away, while making it easier to entangle the fibers in the fabric 40 more reliably. On the other hand, on the downstream side, at least a portion of the fibers are entangled with the fabric 40, so it is necessary to further intertwine the fiber aggregate 50 with the fabric 40. Therefore, by applying a higher water jet pressure than the upstream side, more fibers of the fiber aggregate 50 can be easily entangled with the fabric 40.

Subsequently, the sheet 60 is transferred from the first rotating body 150 to the second rotating body 160, and the sheet 60 is conveyed by the rotation of the second rotating body 160. The second rotating body 160 has an outer circumferential surface 160a driven to continuously rotate in the circumferential direction Dc2 (for example, counterclockwise) about a horizontal axis C160. The circumferential direction Dc2 is also the transport direction, and the CD direction is orthogonal to the circumferential direction Dc2. The second rotating body 160 has the same configuration as the first rotating body 150, and detailed description thereof will be omitted.

A second injection device 400 is provided outside the second rotating body 160 in the radial direction. The second injection device 400 includes one injection nozzle, and sprays water f from the outside in the radial direction of the second rotary body 160 to the sheet 60 held on the outer peripheral surface 160a of the second rotary body 160. Inject. The configuration of the injection nozzle of the second injection device 400 is similar to that of the injection nozzle 302. By jetting the water f by the second jetting device 400, the sheet 60 can be brought into a state in which the fibers of the fiber assembly 50 are more entangled. Note that the second injection device 400 does not necessarily need to be provided, and can be installed as appropriate depending on the intertwined state of the sheets 60. Further, dehydration and drying processing may be performed in the second rotating body 160 to suck moisture from the sheet 60.

<<Dehydration step>>
After being conveyed by the rotation of the second rotating body 160, the sheet 60 is transferred from the second rotating body 160 to the downstream conveying device 140, and then conveyed to the dewatering device 250. The downstream conveyance device 140 includes a downstream conveyance belt 140a, receives the sheet 60 conveyed by the rotation of the second rotating body 160, and conveys it toward the dewatering device 250.

The dewatering device 250 includes a conveyor belt 250a and a plurality of suction units 250b, and conveys the sheet 60 conveyed from the downstream conveyor 140 toward the cutting device 500 by the conveyor belt 250a. When the sheet 60 passes through the plurality of suction sections 250b during conveyance by the conveyance belt 250a, moisture in the sheet 60 on the conveyance belt 250a is sucked from below.

<<Cutting step>>
After the sheet 60 is dehydrated, a cutting process is performed. Sheet 60 is delivered from dewatering device 250 to cutting device 500. The cutting device 500 includes a cutter roll 501 and an anvil roll 502. The cutter roll 501 and the anvil roll 502 are rotating bodies each equipped with a drive source such as a motor and driven to rotate in the circumferential direction Dc2 and the circumferential direction Dc1, respectively, around rotational axes C501 and 502. Further, the outer peripheral surface of the cutter roll 501 is provided with a plurality of protrusions (not shown). The cutter roll 501 and the anvil roll 502 are arranged with the axial directions of the rotational shaft C501 and the rotational shaft C502, respectively, facing the CD direction, and their outer peripheral surfaces facing each other. Then, when the sheet 60 is passed through the roll gap between the drive-rotating cutter roll 501 and the anvil roll 502, the sheet member 70 is manufactured by cutting along the cutting lines S at both ends of the sheet 60 in the CD direction. Ru.

FIG. 10 is a diagram schematically showing a cross section of the sheet 60 in the CD direction at A in FIG. 6. As shown in FIG. As described above, in the first conveyance step, the length of the fabric 40 in the CD direction is shorter than the length of the fiber aggregate 50 in the CD direction. Therefore, in the entangled sheet 60, as shown in FIG. 10, the fiber aggregate 50 has regions at both ends in the CD direction that do not overlap with the fabric 40 in the CD direction. That is, the length W50 of the fiber aggregate 50 in the CD direction is longer than the length W40 of the fabric 40 in the CD direction. Since the outer shape of the fiber aggregate 50 is not determined, the fiber densities at both ends in the CD direction of the sheet 60 tend to be uneven. Therefore, in manufacturing the sheet member 70, it is necessary to cut off both ends of the fiber aggregate 50. On the other hand, since the woven fabric 40 has a predetermined outer shape, it is not necessarily necessary to cut it off unlike the fiber aggregate 50. Therefore, in order to reduce the risk of cutting off the fabric 40 excessively, the length W40 of the fabric 40 in the CD direction is made shorter than the length W50 of the fiber aggregate 50 in the CD direction (W40<W50). While cutting off both ends in the CD direction of the fiber aggregate 50 whose density is unstable, it is possible to reduce the risk of cutting off the fabric 40 excessively.

<Method for manufacturing sheet member 70 of second embodiment>
FIG. 11 is a diagram schematically showing a part of the manufacturing apparatus 101 used in the method of manufacturing the sheet member 70 of the second embodiment. The manufacturing device 101, like the manufacturing device 100, is a device that manufactures a sheet member 70 in which a fiber aggregate 50 and a continuous woven fabric 40 are intertwined and integrated. The manufacturing apparatus 101 includes, from the upstream side in the conveying direction, an upstream conveying device 130, a water supply device 200, a first rotating body 150 and a first injection device 300, a second rotating body 160 and a second injection device, and a downstream conveying device 140. , a dewatering device 250, and a cutting device 500. In the following description, the same members and the like as those in the manufacturing apparatus 100 of the first embodiment are given the same reference numerals, and the description of the parts common to the first embodiment will be omitted.

In the manufacturing apparatus 101, the conveying surface of the upstream conveying belt 130a is provided below the center C130 of the first rotating body 130, and the first rotating body 150 is arranged above the upstream conveying device 130. The upstream conveyor belt 130a and the outer circumferential surface 150a of the first rotating body 150 have opposing portions. The portion where the upstream conveyance belt 130a and the outer circumferential surface 150a of the first rotary body 150 face each other is the closest position between the upstream conveyance device 130 and the first rotary body 150. Further, a second rotating body 160 is arranged above the first rotating body 150.

<<First transport step>>
In the first conveyance step, the fiber aggregate 50 and the fabric 40 placed on the fiber aggregate are conveyed toward the first rotating body 150 using the upstream conveyance device 130 including the upstream conveyor belt 130a.

Using the water supply device 200 (see FIG. 7) provided above the upstream conveyor belt 130a, water f is sprayed to moisten the fabric 40 and the fiber aggregate 50, thereby reducing the thickness of the fiber aggregate 50. By making it thinner, it is possible to make it difficult for the fibers to move.

Subsequently, when delivering the fabric 40 and the fiber aggregate 50 from the upstream conveying device 130 to the first rotating body 150, the gap between the opposing upstream conveying belt 130a and the outer circumferential surface 150a, that is, the upstream conveying device The textile fabric 40 and the fiber aggregate 50 are passed through the closest position between the first rotating body 130 and the first rotating body 150 (passing step). As a result, it is sandwiched between the upstream conveyor belt 130a and the outer circumferential surface 150a. The woven fabric 40 and the fiber aggregate 50 crushed in the thickness direction make the fiber aggregate 50 thinner, allowing the fibers to settle down. This can reduce the possibility that the fibers will move and the fiber density of the fiber assembly 50 will be uneven.

<<Second transport step>>
When the textile fabric 40 and the fiber aggregate 50 are delivered from the upstream conveyance device 130 to the first rotating body 150, the fiber density tends to change depending on the change in the conveyance state. In the manufacturing apparatus 101 shown in FIG. 11, when the first rotating body 150 is used to convey the fabric 40 in contact with the first rotating body 150, the fiber aggregate 50 is conveyed at the outermost side with respect to the conveying surface. and transported with a high degree of freedom. At this time, since the fiber aggregate 50 is conveyed so as to be lifted upward from the bottom along the arc of the first rotating body 150, the fibers of the fiber aggregate 50, which have a high degree of freedom, tend to spread in the conveyance direction. Since the water f is injected to the fiber aggregate 50 in which the fibers are spread in the transport direction in the interlacing step, it is easy to reduce the unevenness of the fibers in the fiber aggregate 50 that occurs in the sheet member 70 after manufacturing. Can be done.

The first injection device 300 sprays water f from the outside in the radial direction of the first rotary body 150 toward the textile fabric 40 held on the outer circumferential surface 150a of the first rotary body 150 and toward the fiber aggregate 50. Inject. The first injection device 300 in the manufacturing apparatus 101 includes two injection nozzles, including an injection nozzle 301 and an injection nozzle 302 in order from the upstream side. By the water jet f from the first jetting device 300, at least some of the fibers of the fiber assembly 50 are intertwined with the fabric 40 to form a sheet 60.

Subsequently, the sheet is transferred from the first rotating body 150 to the second rotating body 160, and the sheet 60 is conveyed by the rotation of the second rotating body 160. The second injection device 400 injects water f toward the seat 60 from the outside in the radial direction of the second rotating body 160 to the inside. The second injection device 400 includes two injection nozzles, including an injection nozzle 401 and an injection nozzle 402 in order from the upstream side. By spraying the water f by the second spraying device 400, the sheet 60 can be brought into a state in which more fibers of the fiber aggregate 50 are entangled with the fabric 40. Note that it is preferable that the injection pressure of the water stream to be injected is set to be the lowest at the injection nozzle 301, and increased in the order of the injection nozzle 302, the injection nozzle 401, and the injection nozzle 402. This is because more fibers can be entangled with the fabric 40 on the downstream side while reducing the risk of the fibers of the fiber assembly 50 being blown away by the water flow on the upstream side.

<<Dehydration step>>
After being conveyed by the rotation of the second rotating body 160, the sheet 60 is transferred from the second rotating body 160 to the downstream conveying device 140, and then conveyed to the dewatering device 250, as in the first embodiment. Perform dehydration treatment.

<<Cutting step>>
After the sheet 60 is dehydrated, a cutting process is performed. Similarly to the first embodiment, the sheet 60 delivered from the dewatering device 250 is cut into a sheet member 70 by the cutting device 500 along the cutting lines S at both ends in the CD direction (see FIG. 10).

<Method for manufacturing sheet member 70 of third embodiment>
FIG. 12 is a diagram schematically showing a part of the manufacturing apparatus 102 used in the method for manufacturing the sheet member 70 of the third embodiment. The basic configuration of the manufacturing apparatus 102 is the same as that of the manufacturing apparatus 101. In the manufacturing apparatus 102 , the fabric 40 is not conveyed in the upstream conveyance device 130 , but the fabric 40 is conveyed toward the first rotary body 150 by the rotation of the supply rotary body 180 .

<<First conveyance step>>
In the first conveyance step, the upstream conveyance device 130 conveys the fiber aggregate 50 toward the first rotating body 150, and the supply rotating body 180 supplies the fabric 40 to the first rotating body 150 by its rotation. Note that the supply rotating body 180 is a so-called raw fabric roll obtained by winding up the continuous fabric 40 into a roll shape. By conveying the woven fabric 40 using the supply rotary body 180, the upstream conveyance belt 130a can convey only the fiber aggregate 50, and the conveyance state in which the fiber density is stabilized can be extended for a longer period of time. Therefore, it becomes easier to maintain uniform fiber density.

It is desirable to convey the fabric 40 to the first rotating body 150 at a constant speed, but if a raw fabric roll is used as the supply rotating body 180, the circumferential speed of the supply rotating body 180 Even if it is controlled to be the same speed as the circumferential speed of the first rotating body 150, the two are not necessarily the same in reality. If these two speeds are not the same, variations in tension may occur. Therefore, as shown in FIG. 12, it is preferable to provide a tension control device 800 for the fabric 40 between the supply rotary body 180 and the first rotary body 150.

The tension control device 800 adjusts the tension of the textile 40 to a predetermined value when it is supplied to the first rotating body 150. The tension control device 800 includes a pair of fixed rolls 801 and a dancer roll 802 provided between the pair of fixed rolls 801. A dancer roll 802 is provided so as to be able to reciprocate in the vertical direction, and by moving the dancer roll 802 in the vertical direction under its own weight, the tension for unwinding the fabric 40 is kept constant. By moving the dancer roll 802 in the vertical direction, the difference between the circumferential speed of the supply rotary body 180 and the circumferential speed of the first rotary body 150 is absorbed, and the tension of the fabric 40 supplied to the first rotary body 150 is kept constant. Make it easier to maintain. In this way, by providing the tension control device 800, it is possible to prevent the textile fabric 40 from sagging and to overlap the textile fabric 40 and the fiber aggregate 50 with the tension kept constant. The fiber density of the fiber aggregate 50 of the sheet member 70 after manufacture can be easily made uniform, and the unevenness due to the fiber density of the fiber aggregate 50 of the sheet member 70 after manufacture can be easily reduced.

Note that it is preferable that the circumferential speed of the supply rotary body 180 is equal to the circumferential speed of the first rotary body 150. It is possible to reduce the possibility that the fabric 40 will loosen during transportation. Further, it is preferable that the circumferential speed of the first rotating body 150 is equal to or higher than the moving speed of the upstream conveyor belt 130a. As the fiber aggregate 50 is conveyed by the first rotating body 150 at a speed higher than the upstream conveying belt 130a, the fibers of the fiber aggregate 50 are spread in the conveying direction on the outer peripheral surface 150a of the first rotating body 150. Easier to transport. Therefore, it becomes easier to alleviate the deviation in the fiber density of the fiber aggregate 50 that occurs when the fiber aggregate 50 is transferred from the upstream conveyor belt 130a to the first rotating body 150.

===Other embodiments===
Although the embodiments of the present invention have been described above, the above-described embodiments are intended to facilitate understanding of the present invention, and are not intended to be interpreted as limiting the present invention. Further, the present invention can be modified and improved without departing from the spirit thereof, and it goes without saying that the present invention includes equivalents thereof. For example, the following modifications are possible.

In the embodiment described above, in the first conveyance step, the length of the fabric 40 in the CD direction is made shorter than the length of the fiber aggregate 50 in the CD direction, so that the fiber aggregate of the sheet 60 is formed as shown in FIG. Although the length W50 of the fabric 40 in the CD direction is longer than the length W40 of the fabric 40 in the CD direction, the present invention is not limited thereto. The length W50 of the fiber aggregate 50 of the sheet 60 in the CD direction may be equal to or less than the length W40 of the fabric 40 in the CD direction. FIG. 13 is a diagram schematically showing a cross section in the CD direction of a sheet 60 in another embodiment. As shown in FIG. 13, the fiber aggregate 50 overlaps the fabric 40 in substantially the entire area in the CD direction. By doing so, in the interlacing step in which the textile fabric 40 is conveyed while being in contact with the first rotating body 150 to intertwine the fibers, substantially the entire area of the fiber assembly 50 is placed on the textile fabric 40. In the interlacing step, the fibers can be entangled with the fabric 40 while transporting the fiber aggregate 50 in a stable state.

In the above embodiment, the first injection device 300 is provided with a plurality of injection nozzles, but the present invention is not limited thereto. For example, the first injection device 300 may be provided with one injection nozzle, or a plurality of injection devices may be provided that inject a water stream toward the first rotating body 150. Moreover, the number of injection nozzles provided in the first injection device 300 can also be changed arbitrarily. The same applies to the second injection device 400.

Furthermore, in the above embodiment, water f is used as the fluid to be injected from the first injection device 300 and the second injection device 400, but the present invention is not limited to this. For example, it may be a gas, or it may be not limited to water, but may be a liquid having predetermined components and viscosity.

1 Sanitary napkin (napkin, absorbent article), 2 Absorbent body, 3 Top sheet (sheet member), 4 Back sheet, 5 Side sheet, 6 Wing portion, 8 Peripheral seal portion, 10 Absorbent core, 11 Adhesive area, 12 Adhesive area for wing section, 20 Core wrap sheet, 40 Fabric, 41 Constituent yarn, 42 Warp, 43 Weft, 45 Weave, 50 Fiber aggregate, 51 Constituent fiber, 60 Sheet, 70 Sheet member, 100 Manufacturing device, 101 manufacturing device, 102 manufacturing device, 120 direction change roll, 130 upstream conveyance device, 130a upstream conveyance belt (conveyor), 130b roll, 140 downstream conveyance device, 140a downstream conveyance belt, 150 first rotating body ( rotating body), 150a outer circumferential surface, 151 intake hole, 152 cylindrical partition, 153 partition, 160 second rotating body, 160a outer circumferential surface, 180 supply rotating body, 200 water supply device, 250 dewatering device, 250a conveyor belt, 250b suction part, 300 first injection device, 301 injection nozzle, 302 injection nozzle, 303 injection nozzle, 400 second injection device, 500 cutting device, 501 cutter roll, 502 anvil roll, 800 tension control device, 801 fixed roll, 802 dancer roll , f water, S cutting line, SP almost closed space

Claims (8)

A method for producing a sheet member for an absorbent article comprising a woven fabric and a fiber aggregate intertwined with the woven fabric, the method comprising:
The sheet member is a sanitary napkin, a vaginal discharge sheet, a urine absorbing pad, or a top sheet of a disposable diaper,
a first conveyance step of conveying at least the fiber aggregate using a conveyor;
a second conveyance step of further conveying the textile and the fiber aggregate conveyed in the first conveyance step using a rotating body having a suction mechanism,
In the first conveyance step,
The conveyor does not convey the textile,
In the second conveyance step,
Conveying the textile in contact with the peripheral surface of the rotating body,
injecting fluid from the outside in the radial direction of the rotating body to the inside to entangle the fiber aggregate in the textile;
In the first conveyance step, a process is performed to reduce the thickness of the fiber aggregate,
The treatment for reducing the thickness of the fiber aggregate is a fluid injection treatment,
The pressure of the fluid injected by the upstream injection port disposed on the upstream side in the rotational direction of the rotating body is
The pressure is equal to or lower than the pressure of the fluid injected by a downstream injection port disposed on the downstream side in the rotational direction of the rotating body,
The length of the textile in the direction of the rotational axis of the rotating body is shorter than the length of the fiber aggregate in the direction of the rotational axis,
After the second conveyance step, there is a cutting step of cutting both ends of the fiber aggregate in the direction of the rotation axis along a pair of cutting lines located inside both ends of the fabric.
A method for manufacturing a sheet member, characterized in that: A method for manufacturing a sheet member according to claim 1, comprising:
A method for manufacturing a sheet member, characterized in that the circumferential speed of the rotating body is higher than the moving speed of the conveyor. A method for manufacturing a sheet member according to claim 1 or 2 , comprising:
The conveyance surface of the conveyor is provided at the same height as the rotation center of the rotating body or at a position higher than the rotation center,
Immediately after the start of conveyance in the second conveyance step, the fiber aggregate is conveyed upward along the rotational direction of the rotating body. A method for manufacturing a sheet member according to claim 1 or 2 , comprising:
The conveyance surface of the conveyor is provided below the rotation center of the rotating body,
Between the first conveyance step and the second conveyance step,
A method for manufacturing a sheet member, further comprising a passing step in which the fiber aggregate passes through a position where the rotating body and the conveyor are closest to each other. A method for manufacturing a sheet member according to claim 4 , comprising:
A method for producing a sheet member, comprising a supplying step of supplying the textile to the rotating body before the second conveyance step. A method for manufacturing a sheet member according to claim 5 , comprising:
A method for producing a sheet member, characterized in that, in the supplying step, the woven fabric fed out by rotation of a supply rotary body is supplied to the rotary body with a constant tension. A method for manufacturing a sheet member according to claim 6 , comprising:
The circumferential speed of the supply rotating body is equal to the circumferential speed of the rotating body,
A method for manufacturing a sheet member, characterized in that the circumferential speed of the rotating body is higher than the moving speed of the conveyor. An apparatus for producing a sheet member for an absorbent article comprising a woven fabric and a fiber aggregate intertwined with the woven fabric,
The sheet member is a sanitary napkin, a vaginal discharge sheet, a urine absorbing pad, or a top sheet of a disposable diaper,
a conveyor that conveys the fiber aggregate but does not convey the textile;
a rotating body equipped with a suction mechanism that transports the textile and the fiber aggregate transported by the transport conveyor with the textile in contact with a peripheral surface;
an intertwining section that injects fluid from the outside in the radial direction of the rotating body to the inside to intertwine the fiber aggregate with the fabric;
a liquid injection unit that performs a process to reduce the thickness of the fiber aggregate by injecting a liquid toward the fiber aggregate conveyed by the conveyor;
has
The pressure of the fluid injected by the upstream injection port disposed on the upstream side in the rotational direction of the rotating body is
The pressure is equal to or lower than the pressure of the fluid injected by a downstream injection port disposed on the downstream side in the rotational direction of the rotating body,
The length of the textile in the direction of the rotational axis of the rotating body is shorter than the length of the fiber aggregate in the direction of the rotational axis,
A sheet having a cutting section that cuts both ends of the fiber aggregate in the direction of the rotational axis along a pair of cutting lines located inside both ends of the fabric after being conveyed by the rotating body. Part manufacturing equipment.

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