TW202031471A - Method for manufacturing sheet member, and apparatus for manufacturing sheet member - Google Patents

Abstract

Provided is a method for manufacturing a sheet member (70) for absorbent articles, the sheet member (70) having a woven fabric (40) and a fiber assembly (50) entangled with the woven fabric (40). The method is characterized by comprising: a first conveying step in which at least the fiber assembly (50) is conveyed using a conveyor (130a); and a second conveying step in which the woven fabric (40), and the conveyed fiber assembly (50) from the first conveying step are further conveyed using a rotating body (150) having a suction mechanism, wherein in the second conveying step, the woven fabric (40) is conveyed in contact with the circumferential surface of the rotating body (150), and a fluid is jetted in the radially inward direction of the rotating body (150) to entangle the fiber assembly (50) with the woven fabric (40).

Description

Method for manufacturing sheet member and manufacturing device for sheet member

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

Patent Document 1 discloses the use of a non-woven composite low-density fabric in which a woven fabric and a non-woven fabric are intertwined in order to soften the feel of absorbent articles such as sanitary napkins and disposable diapers. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 11-170413

[Problem to be solved by invention]

However, in the manufacturing process of the non-woven composite low-density fabric shown in Patent Document 1, the fibers constituting the non-woven fabric intertwined with the fabric are light materials and are easily affected by external influences during transportation. Therefore, the fiber density The unevenness caused by the difference is easy to produce, and there is a concern that the appearance will be damaged.

The present invention was developed in view of the above-mentioned problems, and its purpose is to alleviate concerns about uneven fiber density of fiber aggregates intertwined with fabrics. [Technical means to solve the problem]

The main invention for achieving the above-mentioned objects is a method for manufacturing a sheet member, which is a method for manufacturing a sheet member for absorbent articles having a fabric and a fiber assembly in a state intertwined with the fabric, characterized by: 1 conveying step, which is to convey at least the aforementioned fiber assembly using a conveying belt, and a second conveying step, which uses a rotating body with a suction mechanism to further convey the aforementioned fabric and the aforementioned fiber assembly conveyed in the aforementioned first conveying step In the second conveying step, the fabric is transported by contacting the peripheral surface of the rotating body, and spraying fluid from the radially outer side of the rotating body toward the inner side so that the fiber assembly and the fabric are entangled. The other features of the present invention can be understood from the description in this specification and the attached drawings. [Effects of the invention]

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

[Forms for implementing invention]

According to the description in this manual and attached drawings, at least the following items are understood. A method of manufacturing a sheet member, a method of manufacturing a sheet member for an absorbent article having a fabric and a fiber assembly in a state intertwined with the fabric, characterized by having: a first conveying step, which uses conveying The belt conveys at least the fiber assembly and the second conveying step, which further conveys the fabric and the fiber assembly conveyed in the first conveying step using a rotating body with a suction mechanism, and in the second conveying step, The woven fabric is brought into contact with the peripheral surface of the rotating body to be transported, and fluid is sprayed from the radially outer side of the rotating body toward the inner side so that the fiber assembly and the woven fabric are intertwined.

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

In the manufacturing method of such a sheet member, it is desirable that the peripheral speed of the said rotating body is more than the moving speed of the said conveyance belt.

According to the manufacturing method of such a sheet member, it is easy to move the fibers of the fiber assembly in the conveying direction, and it is possible to reduce the concern about uneven fiber density of the fiber assembly intertwined with the fabric.

In such a method of manufacturing a sheet member, the pressure of the fluid ejected by the upstream injection port arranged on the upstream side of the rotation of the rotating body is determined by being arranged downstream on the downstream side of the rotation of the rotating body It is desirable that the pressure of the fluid ejected from the side injection port is lower than that.

According to the manufacturing method of such a sheet member, the fear that the fibers of the fiber assembly are blown away by the sprayed fluid can be alleviated, and the fabric can be more entangled with the fabric.

Such a method of manufacturing a sheet member, wherein the conveying surface of the conveying conveyor belt is set at the same height as the rotation center of the rotating body or a position higher than the rotation center, and the conveying in the second conveying step starts After that, it is desired that the fiber assembly is conveyed upward along the rotation direction of the rotating body.

According to such a method of manufacturing a sheet member, it is possible to alleviate concerns about fiber unevenness in the fiber assembly due to transportation.

In the method of manufacturing such a sheet member, it is desirable that the length of the rotating body of the woven fabric in the direction of the rotation axis is equal to or less than the length of the fiber assembly in the direction of the rotation axis.

According to such a method of manufacturing a sheet member, even when the fiber density at the end in the width direction of the fiber assembly is unstable, the fear of cutting into the fabric can be reduced.

In such a method of manufacturing a sheet member, wherein the conveying surface of the conveying conveyor belt is provided below the center of rotation of the rotating body, and the fiber is further provided between the first conveying step and the second conveying step. It is desirable that the assembly passes through the closest position of the rotating body and the conveyor belt.

According to such a method of manufacturing a sheet member, it is possible to alleviate concerns about fiber unevenness in the fiber assembly due to transportation.

In the method of manufacturing such a sheet member, it is desirable that the length of the rotating body of the woven fabric in the direction of the rotation axis is greater than or equal to the length of the fiber assembly in the direction of the rotation axis.

According to the manufacturing method of such a sheet member, since the fiber assembly conveyed by the rotating body is placed on a woven fabric larger than the width, it can be conveyed in a more stable state.

In the manufacturing method of such a sheet member, in the first conveying step, the conveying belt does not convey the fabric, and it is desirable to have a supply step of supplying the fabric to the rotating body before the second conveying step.

According to such a method of manufacturing a sheet member, it is possible to alleviate concerns about fiber unevenness in the fiber assembly due to transportation.

In the manufacturing method of such a sheet member, in the supply step, the fabric continuously released by the rotation of the supply rotating body is supplied to the rotating body with a certain tension.

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

In the manufacturing method of such a sheet member, it is desirable that the peripheral speed of the supply rotating body is equal to the peripheral speed of the rotating body, and the peripheral speed of the rotating body is a speed equal to or higher than the moving speed of the conveyor belt.

According to such a method of manufacturing a sheet member, it is possible to alleviate concerns about fiber unevenness in the fiber assembly due to transportation.

In the manufacturing method of such a sheet member, it is desirable to perform the process which reduces the thickness of the said fiber assembly in the said 1st conveyance process.

According to such a method of manufacturing a sheet member, it is possible to reduce the fear of uneven fibers in the fiber assembly.

In the method of manufacturing such a sheet member, it is desirable that the treatment for reducing the thickness of the aforementioned fiber assembly is fluid jet treatment.

According to such a method of manufacturing a sheet member, it is possible to reduce the fear of uneven fibers in the fiber assembly.

In the manufacturing method of such a sheet member, it is desirable that the process for reducing the thickness of the fiber assembly is to allow the fiber assembly to pass between the opposing conveyor belt and the rotating body.

According to such a method of manufacturing a sheet member, it is possible to reduce the fear of uneven fibers in the fiber assembly.

A manufacturing apparatus for a sheet member is a manufacturing apparatus for a sheet member for an absorbent article having a fabric and a fiber assembly in a state intertwined with the fabric, characterized by having: a conveying belt that conveys at least the fiber assembly Body, a rotating body equipped with a suction mechanism, which conveys the fabric in a state where the fabric is in contact with the peripheral surface, and the fiber assembly conveyed by the conveying conveyor belt, and the entanglement part, which is from the rotating body The fluid is jetted from the outer side in the radial direction toward the inner side so that the fiber assembly and the fabric are intertwined.

According to the manufacturing apparatus of such a sheet member, it is possible to reduce concerns about uneven fiber density of the fiber assembly intertwined with the fabric.

===Implementation form === <The structure of sanitary napkin 1> Hereinafter, the absorbent article of the present invention will be described with a sanitary napkin as an example, but it is not limited to this, such as secretion sheets, urine absorbent pads, disposable diapers, etc. The absorbent article can also be applied.

Fig. 1 is a plan view of a sanitary napkin 1 (hereinafter also referred to as "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 cross-sectional view taken along line X-X in Fig. 1. The sanitary napkin 1 has a front-rear direction, a width direction, and a thickness direction orthogonal to each other. In the front-rear direction, the side that abuts the lower abdomen of the wearer is called the front side, and the side that abuts the buttocks is called the back side. In the thickness direction, the side contacting 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 sanitary napkin 1 has a pair of side sheets 5, a top sheet 3, an absorber 2, and a back sheet 4 laminated in this order from the skin side in the thickness direction. The surface sheet 3 and the absorber 2 are joined to each other by a well-known joining means such as a hot melt adhesive. The surface sheet 3 and the back sheet 4 have a larger plane size than the absorber 2 and cover the entire plane of the absorber 2. In addition, the top sheet 3, the back sheet 4, and the side sheet 5 laminated on each other are joined to each other via an outer peripheral sealing portion 8 along the outer peripheral edge of the sanitary napkin 1. The pair of side sheets 5 are provided on both sides in the width direction, are arranged on the skin side of the surface sheet 3 along the front-rear direction, and are joined to the surface sheet 3 using a well-known adhesive means or fusion means.

The sanitary napkin 1 has a pair of wings 6 extending from a central area in the front-rear direction of the sanitary napkin 1 toward 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 in the width direction of the front sheet 3. In addition, the sanitary napkin 1 may be in a form without the wings 6.

The non-skin side of the sanitary napkin 1 (the non-skin side of the back sheet 4) is provided with an adhesive area 11 coated with an adhesive. When the tampon 1 is used, the adhesive area 11 is adhered to the skin side of the underwear or the like, and the sanitary napkin 1 is fixed to the underwear or the like. The shape and number of the adhesive area 11 can be changed arbitrarily.

Similarly, the non-skin side of each wing 6 (the non-skin side of the back sheet 4) is provided with an adhesive region 12 for the wing. When using the sanitary napkin 1, the wing adhesive region 12 is adhered to the non-skin side of the underwear or the like, and the sanitary napkin 1 is fixed to the underwear or the like. The shape and number of the wing adhesive regions 12 can be changed arbitrarily.

The surface sheet 3 is liquid-permeable and is composed of a fabric 40 and a fiber assembly 50. The back sheet 4 may be formed of a liquid-impermeable and moisture-permeable plastic film, a liquid-impermeable non-woven fabric, laminated sheets of these, and the like. For the side sheet 5, a well-known nonwoven fabric can be used.

The absorber 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-cladding sheet 20 that covers the entire absorbent core 10. The absorbent core 10 is formed into a predetermined shape by adding a superabsorbent polymer (so-called SAP) as a liquid-absorbent granular material to pulp fibers, cellulose-based absorbent fibers, etc., which are liquid-absorbent fibers. The core-cladding sheet 20 is a liquid-permeable sheet, and can exemplify tissue paper, air-laid and the like.

＜Structure of surface sheet 3＞ FIG. 4 is a partially enlarged view of the surface sheet 3 when viewed from the skin side, and FIG. 5 shows a state where the surface sheet 3 is separated into a woven fabric 40 and a fiber assembly 50. As shown in FIGS. 4 and 5, the surface sheet 3 is a sheet member in which the fibers of the fabric 40 and the fiber assembly 50 are intertwined (the fabric 40 and the fiber assembly 50 are intertwined) to form an integrated sheet member. The manufacturing method of the sheet member 70 which entangles the woven fabric 40 and the fiber assembly 50 is mentioned later.

As shown in FIG. 4, the fabric 40 is composed of constituent yarns 41 woven into a lattice shape. The constituent yarn 41 has a plurality of warp yarns 42 and a plurality of weft yarns 43 intersecting with the warp yarns 42. They are formed by crossing each other in the thickness direction to form a plurality of weaves surrounded by the warp yarns 42 and the weft yarns 43 as penetrating areas. Item 45. The constituent yarn 41 of the fabric 40 is a twisted yarn formed by twisting a raw yarn formed of cotton yarn (cotton fiber). In addition to cotton fibers, the raw yarn is suitably used cellulose 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. For the cotton yarn used in the raw yarn, it is ideal to use the cotton yarn with a thickness of 10-100. The fabric 40 mainly made of cotton material or the like is used for the surface sheet 3, so that the wearer can obtain a comfortable skin touch, and skin problems are unlikely to occur. In addition, the weaving method of the woven fabric 40 is not limited to a plain weave that is woven into a lattice shape, and a well-known weaving method such as twill weave, satin weave, and rib weave can be appropriately used.

The fiber assembly 50 is an assembly of fibers formed by a known manufacturing method such as a spunbond method using long fibers, carding short fibers in a certain direction with a carding machine, and finishing the fibers to form a fiber web. The body is formed into the state of the previous stage of the non-woven fabric. In addition, the fiber assembly 50 is formed of constituent fibers 51 containing hydrophilic fibers. The constituent fibers 51 are soft and light materials, and are aggregates that are gathered irregularly. Hydrophilic fibers include, for example, regenerated cellulose fibers such as rayon and fibrillated rayon, natural cellulose fibers such as cotton and ground pulp, and semi-synthetic cellulose such as acetate. In addition, the fiber assembly 50 is not limited to the fiber assembly 50 formed by the carding method using a carding machine, and the fiber assembly 50 formed by methods such as an air forming method, a wet method, a spunbond method, and a meltblown method may be used. The fiber density of the fiber assembly 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 fiber length of the fiber assembly 50 is, for example, 1 to 100 mm. In addition, the fineness of the fiber assembly 50 is set to, for example, 0.1 to 6 dtex.

<The manufacturing method of the sheet member 70 of the first embodiment> The fabric 40 in a continuous state is produced, and the fiber assembly 50 manufactured by the fiber assembly manufacturing device (not shown) is intertwined to form a sheet member 70 in an integrated continuous state, and the sheet in a continuous state is applied The member 70 is carded into a predetermined shape to form the surface sheet 3. However, the sheet member 70 after manufacture may have unevenness due to the difference in the fiber density of the fiber assembly 50. In this regard, the method of 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 in a continuous state.

FIG. 6 is a diagram schematically showing a part of the manufacturing apparatus 100 used in the method of manufacturing the sheet member 70 according to the first embodiment. The manufacturing apparatus 100 is an apparatus for manufacturing a sheet member 70 in which the fiber assembly 50 and the fabric 40 are intertwined and integrated. The manufacturing apparatus 100 includes an upstream conveying device 130 and a water supply device 200, a first rotating body 150 and a first spraying device 300, a second rotating body 160 and a second spraying device 400, and a downstream conveying device 140 from the upstream side in the conveying direction. , Dehydration device 250, cutting device 500. The manufacturing apparatus 100 conveys the fabric 40 and the fiber assembly 50 in the conveyance direction, and the direction orthogonal to the conveyance direction is called "CD direction".

＜＜The first transportation step＞＞ The first conveying step is a step of conveying at least the fiber assembly 50 using the upstream conveying device 130. The upstream conveying device 130 includes an upstream conveying belt 130a (also referred to as a "conveyor belt") and rollers 130b. The upstream conveyance belt 130a is a conveyance part that conveys the fabric 40 and the fiber assembly 50 along a predetermined conveyance path. The fiber 40 is placed in a state in which the fiber 40 is in contact with the upstream conveyor belt 130a, and the fabric 40 and the fiber assembly 50 are transported in a state where the fiber assembly 50 is further placed thereon. Then, it is conveyed toward the first rotating body 150 under the roller 130b. In addition, the length of the woven fabric 40 in the CD direction is shorter than the length of the fiber assembly 50 in the CD direction. That is, when the upstream conveying belt 130a is viewed in a plan view, the fabric 40 is conveyed in a state in which substantially the entire area thereof is covered by the fiber assembly 50.

The water supply device 200 is a device that sprays water f as a fluid, and is provided above the upstream conveyor 130a. FIG. 7 is a diagram schematically showing the water supply device 200. In FIG. 7, the upstream conveying device 130 and the like are omitted and shown. The water supply device 200 supplies water f toward the upstream conveying belt 130a to wet the fiber assembly 50 conveyed on the upstream conveying belt 130a and reduce the thickness of the fiber assembly 50. The fibers of the fiber assembly 50 are light and soft materials. Simply put, because they are in a fluffy state, they will move during transportation until they are entangled with the fabric 40, or the water caused by the first spray device 300 in the subsequent steps. The fiber is sprayed under the spray pressure of f, and there is a concern that the fiber part will increase or decrease. Here, it is desirable to spray water f on the fiber assembly 50 in the first conveying step to wet the fibers, and to reduce the thickness of the fiber assembly 50 so that the fibers are not easily moved. That is, because the purpose of the water supply device 200 is only to make the fiber assembly 50 contain water, the fiber assembly 50 and the fabric 40 are not entangled at this point in time. Thereby, by the conveying in the first conveying step, it is possible to reduce the fear of unevenness in the fibers of the fiber assembly 50 of the sheet member 70 after manufacture due to the deviation of the fiber density. In addition, as a method of wetting the fiber assembly 50 with water, dripping water, spraying spray-like water, or soaking the fiber assembly 50 in a container containing water may be used.

When the fabric 40 and the fiber assembly 50 are delivered to the first rotating body 150 from the upstream conveying device 130, the fiber assembly 50 is passed through the gap between the roller 130b and the upstream conveying belt 130a facing each other. The fiber assembly 50 is sandwiched between the roller 130b and the upstream conveying belt 130a, and the fiber assembly 50 is crushed in the thickness direction, so that the thickness of the fiber assembly 50 is reduced, and the movement of the fibers can be stabilized. Thereby, the fiber moves in the first conveying step, the fear of fiber density deviation can be reduced, and the fear of fiber unevenness of the fiber assembly 50 of the sheet member 70 after manufacture can be reduced.

In addition, in this embodiment, although the thickness of the fiber assembly 50 is made thin using the water supply device 200 and the roller 130b, it is not limited to this. Moreover, the manufacturing apparatus 100 which does not have the water supply apparatus 200 may be sufficient, and it does not need to have the structure which the roller 130b and the upstream conveyance belt 130a oppose with the fiber assembly 50 interposed.

＜＜The second transport step＞＞ The second conveying step is a step in which the fiber assembly 50 and the woven fabric 40 conveyed in the first conveying step are further conveyed by the rotation of the first rotating body 150, and the fibers of the fiber assembly 50 and the woven fabric 40 are intertwined. The step of entanglement of the fibers of the fiber assembly 50 and the fabric 40 is also referred to as "entanglement step". The woven fabric 40 and the fiber assembly 50 in an entangled state are referred to as a sheet 60. The sheet 60 shows a state from a state where at least a part of the fiber assembly 50 is entangled with the woven fabric 40 to a state where the cutting process is performed in a cutting step described later. In FIG. 6, the sheet 60 and the sheet member 70 are indicated by diagonal lines toward the lower right.

Because the fibers of the fiber assembly 50 are light and have a high degree of freedom, in the transportation from the first transportation step to the second transportation step, the fabric 40 and fibers are delivered from the upstream transportation device 130 to the first rotating body 150 When the assembly 50 is assembled, the fiber density tends to change easily in response to changes in the conveying state. In particular, as shown in FIG. 6, when there is a gradient in the conveyance path, there is a fiber assembly 50 near the roller 130b that delivers the fabric 40 and the fiber assembly 50 from the upstream conveying device 130 to the first rotating body 150. Conveyance is prone to stagnation, and there are concerns about fiber density changes. In this way, after the entanglement step, there is a concern about unevenness when the sheet member 70 is manufactured.

In this regard, in the second transport step, the fabric 40 is transported in a state where the outer peripheral surface 150a of the first rotating body 150 is in contact, and if the fiber assembly 50 is transported at the outermost side with respect to the transport surface, the fiber assembly 50 The outer surface (the surface opposite to the side opposite to the fabric 40) is not restricted, but is conveyed in a state with a high degree of freedom. Therefore, when the first rotating body 150 is used for transportation, it is easy to spread the fibers of the fiber assembly 50 along the transportation direction for transportation. As a result, the first spray device 300 is used to spray high-pressure water f on the fiber assembly 50 that is more spread out with respect to the fabric 40, and it is easy to form the fabric 40 so that the fibers of the fiber assembly 50 are uniformly intertwined. The fiber unevenness of the fiber assembly 50 generated by the subsequent sheet member 70 is reduced.

In addition, when the fabric 40 contacting the outer peripheral surface 150a as the conveying surface is conveyed, the fiber assembly 50 is arranged further outside in the radial direction of the first rotating body 150. At this time, because the fibers of the fiber assembly 50 are in a freely movable state, the fiber assembly 50 is easily spread during the conveyance of the first rotating body 150, and the fiber assembly formed in the sheet member 70 after manufacture The unevenness caused by the difference in fiber density of 50 is reduced. Furthermore, since the fiber assembly 50 is conveyed on the radially outer side of the fabric 40, the fibers of the fiber assembly 50 are easily spread in the conveying direction. It is easy to spread the fiber with respect to the conveying direction, and it is easy to reduce the unevenness of the fiber density.

In addition, it is desirable that the peripheral speed of the first rotating body 150 is equal to or higher than the moving speed of the upstream conveyor belt 130a, and it is more desirable that the peripheral speed of the first rotating body 150 is faster than the moving speed of the upstream conveyor belt 130a. Suppose that when the peripheral speed of the first rotating body 150 is slower than the moving speed of the upstream conveyor belt 130a, there may be a problem of the fabric 40 slack in the upstream conveyor 130, or the fiber assembly 50 placed on the fabric 40 Conveying is also stagnant, and there is a concern about deviation in fiber density. In order to prevent this, the peripheral speed of the first rotating body 150 is set to be higher than the moving speed of the upstream conveyor belt 130a, and the fabric 40 is conveyed with appropriate tension. As a result, the fiber assembly 50 can be easily conveyed in the conveying direction. status. In addition, the formation of the fiber assembly 50 is easy to convey, and it is easy to reduce the worry of uneven fiber density.

FIG. 8 is a diagram schematically showing a cross section of the first rotating body 150. The outer peripheral surface 150a of the first rotating body 150 continuously drives and rotates in the circumferential direction Dc1 (for example, in the clockwise direction) with the horizontal axis C150 as the center of rotation. In addition, the circumferential direction Dc1 is also the conveying direction, and the CD direction and the circumferential direction Dc1 are orthogonal. The first rotating body 150 has a substantially cylindrical shape, and a plurality of suction holes 151 are provided on its peripheral surface. The inner peripheral side and the outer peripheral side of the first rotating body 150 communicate with each other via the suction hole 151 so that liquid and gas can pass therethrough.

In addition, it is preferable that the conveying surface of the upstream conveying belt 130a and the axis C150 are at the same height or more, and it is more preferable that the conveying surface of the upstream conveying belt 130a be provided at a higher position than the axis C150. In this way, the height difference when the fabric 40 and the fiber assembly 50 are delivered from the upstream conveyor belt 130a to the first rotating body 150 can be further reduced. Therefore, the gradient generated in the conveying path can be further reduced. The bias of fiber density is reduced.

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 coaxially with the first rotating body 150. On the inner peripheral side of the first rotating body 150, the ring-shaped substantially closed space SP is sequentially divided into a first area SP1, a second area SP2, and a third area by a plurality of partition walls 153, 153, 153 in the circumferential direction Dc1 SP3. The first area SP1 and the second area SP2 on the upstream side are maintained at a negative pressure state that is lower than the outside air pressure. The third area SP3 is at the same pressure as the outside air pressure, or is a combination of the first area SP1 and the second area SP2 and the outside air pressure. The air pressure value between. The first area SP1 and the second area SP2 are set in a negative pressure state, and while sucking and holding the fabric 40 and the fiber assembly 50, the sprayed water f is sucked toward the inner peripheral side. In addition, the rotation of the first rotating body 150 refers to a state where the outer peripheral surface 150a is rotated, and the cylindrical partition wall 152 and the partition walls 153, 153, and 153 are each fixed.

The first injection device 300 is provided on the outer side of the first rotating body 150 in the radial direction. The first spray device 300 includes spray nozzles 301, 302, and 303 in this order from the upstream side in the conveying direction. The first spray device 300 sprays water f on the fabric 40 and the fiber aggregate 50 held on the outer peripheral surface 150 a of the first rotating body 150 from the outside in the radial direction of the first rotating body 150.

The spray nozzles 301, 302, and 303 are respectively arranged at different positions in the conveying direction. Since the basic structures of the injection nozzles 301, 302, and 303 are almost the same, the injection nozzle 302 will be described below. FIG. 9a is a diagram schematically showing the injection nozzle 302. FIG. FIG. 9b is a diagram schematically showing a configuration example of the injection hole of the injection nozzle 302. FIG. In addition, FIG. 9a shows that the nozzles 301, 303, etc. other than the first rotating body 150, the nozzle 302, the fabric 40, and the fiber assembly 50 are omitted.

The spray nozzle 302 is arranged perpendicular to the outer peripheral surface 150a of the first rotating body 150, and sprays water f toward the first rotating body 150 at a high pressure. 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 injection holes 301b arranged in a straight line and at a constant pitch parallel to the CD direction. The water f sent from the upper part of the spray nozzle 302 is sprayed to the entire CD direction of the fabric 40 and the fiber assembly 50 from the plurality of spray holes 301b. The hole diameter of the injection hole 301b is set to, for example, 50 to 200 μm, and the distance between the centers of the injection hole 301b adjacent to the CD direction is set to, for example, 0.2 to 2.0 mm.

In the first spray device 300, it is desirable that the pressure of the water f sprayed on the upstream side (the spray pressure of the water flow) is lower than the pressure sprayed on the downstream side, and it is more desirable that the spray pressure of the water flow on the upstream side is higher than that of the water flow on the downstream side. The injection pressure is small. Specifically, the spray pressure of the water flow from the spray nozzle 301 is lower than the spray pressure of the water flow from the spray nozzle 303. In addition, in the present embodiment, the spray pressure of the water flow of the spray nozzles 301, 302, and 303 is sequentially increased from the upstream side to the downstream side in the conveying direction. In addition, it is desirable to set the injection pressure of each water stream in the range of 1.0 to 7.0 MPa, respectively.

In a state where the fibers of the fiber assembly 50 are not entangled with the woven fabric 40, the outer surface of the fiber assembly 50 (the surface opposite to the side opposite to the woven fabric 40) is not restricted, and the degree of freedom is high. Therefore, if the spray pressure of the water stream on the upstream side is increased, the fibers may be blown away by the sprayed water stream, and the fiber assembly 50 may be damaged or the fiber density of the fiber assembly 50 may be biased. In this regard, setting the jet pressure of the upstream water stream to be lower can reduce the worry of blowing the fiber, and it is easier to more reliably entangle the fiber and the fabric 40. On the other hand, on the downstream side, since at least a part of the fiber is entangled with the fabric 40, the fiber assembly 50 must be further entangled with the fabric 40. Therefore, in addition to applying a higher jet pressure of the water stream on the upstream side, more fibers of the fiber assembly 50 and the fabric 40 are easily entangled.

Next, the sheet 60 is delivered 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 a horizontal axis C160 as the center of rotation, and continuously drives and rotates the outer peripheral surface 160a in the circumferential direction Dc2 (for example, in the counterclockwise direction). The circumferential direction Dc2 is also the conveying direction, and the CD direction is orthogonal to the circumferential direction Dc2. The second rotating body 160 has the same structure as the first rotating body 150, and detailed description is omitted.

A second injection device 400 is provided on the outer side of the second rotating body 160 in the radial direction. The second spraying device 400 includes one spray nozzle, and sprays water f from the outside in the radial direction of the second rotating body 160 to the sheet 60 held on the outer peripheral surface 160 a of the second rotating body 160. The structure of the spray nozzle of the second spray device 400 is the same as that of the spray nozzle 302. By the spraying of the water f by the second spraying device 400, the sheet 60 can be made into a state in which the fibers of the fiber assembly 50 are more entangled. In addition, the second spraying device 400 does not necessarily have to be installed, and it can be appropriately installed according to the entangled state of the sheet 60. In addition, the second rotating body 160 may be subjected to dehydration and drying processes that suck the moisture of the sheet 60.

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

The dewatering device 250 includes a conveying belt 250a and a plurality of suction units 250b, and the sheet 60 conveyed from the downstream conveying device 140 is conveyed toward the cutting device 500 by the conveying belt 250a. When a plurality of suction parts 250b are being transported by the transport belt 250a, the moisture of the sheet 60 on the transport belt 250a is sucked from below.

＜＜Cut step＞＞ The cutting process is performed after the dehydration process of the sheet 60. The sheet 60 is delivered from the dehydration device 250 to the cutting device 500. The cutting device 500 includes a cutting roller 501 and an anvil roller 502. The cutting roller 501 and the anvil roller 502 are respectively provided with a drive source such as a motor, and are rotating bodies that are driven to rotate in the circumferential direction Dc2 and the circumferential direction Dc1, respectively, centering on the rotating shafts C501 and 502. In addition, the outer peripheral surface of the cutting roller 501 is provided with a plurality of protrusions (not shown). The cutting roller 501 and the anvil roller 502 are arranged such that the axial directions of the rotating shaft C501 and the rotating shaft C502 are directed toward the CD direction, and the outer peripheral surfaces of each other are arranged to face each other. Then, when the sheet 60 passes through the roller gap between the cutting roll 501 and the anvil roll 502 that is driven to rotate, the sheet 60 is cut at the cutting lines S at both ends of the CD direction of the sheet 60 to produce the sheet member 70.

FIG. 10 is a view schematically showing a cross section in the CD direction of the sheet 60 of A in FIG. 6. As described above, in the first conveying step, the length of the fabric 40 in the CD direction is shorter than the length of the fiber assembly 50 in the CD direction. Therefore, as shown in FIG. 10 for the entangled sheet 60, the fiber assembly 50 has regions that do not overlap with the fabric 40 in the CD direction at both ends in the CD direction. That is, the length W50 of the fiber assembly 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 assembly 50 is not a predetermined one, both ends in the CD direction in the state of the sheet 60 tend to have different fiber densities. Therefore, in the manufacture of the sheet member 70, both ends of the fiber assembly 50 must be cut off. On the other hand, since the outer shape of the fabric 40 has a predetermined shape, it is not necessary that the fiber assembly 50 must be cut off. Therefore, in order to reduce the worry of excessively cutting off the fabric 40, the length W40 in the CD direction of the fabric 40 is made shorter than the length W50 in the CD direction of the fiber assembly 50 (W40<W50), except for fibers with unstable fiber density. Except for the ends of the assembly 50 in the CD direction, the fear of excessively cutting off the fabric 40 can be reduced.

<The manufacturing method of the sheet member 70 of the 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 according to the second embodiment. The manufacturing apparatus 101 is an apparatus for manufacturing the sheet member 70 in which the fiber assembly 50 and the fabric 40 in a continuous state are intertwined and integrated in the same manner as the manufacturing apparatus 100. The manufacturing device 101 includes an upstream conveying device 130 and a water supply device 200, a first rotating body 150 and a first spraying device 300, a second rotating body 160 and a second spraying device, and a downstream conveying device 140 from the upstream side in the conveying direction. Dewatering device 250 and cutting device 500. In the following description, members and the like that are the same as those of the manufacturing apparatus 100 of the first embodiment are denoted by the same reference numerals, and the description of the parts common to the first embodiment is omitted.

In the manufacturing apparatus 101, the conveying surface of the upstream conveying belt 130 a is provided below the center C150 of the first rotating body 150, and the first rotating body 150 is arranged above the upstream conveying device 130. The upstream conveyor belt 130a and the outer peripheral surface 150a of the first rotating body 150 have portions facing each other. The portion where the upstream conveying belt 130a and the outer peripheral surface 150a of the first rotating body 150 face each other is the position where the upstream conveying device 130 and the first rotating body 150 are closest. In addition, a second rotating body 160 is arranged above the first rotating body 150.

＜＜The first transportation step＞＞ The first transport step is to transport the fiber assembly 50 and the fabric 40 placed on the fiber assembly toward the first rotating body 150 using the upstream transport device 130 equipped with the upstream transport belt 130a.

Using the water supply device 200 (refer to FIG. 7) installed above the upstream conveyor belt 130a, spray water f to wet the fabric 40 and the fiber assembly 50, and reduce the thickness of the fiber assembly 50 to make fibers A state that is not easy to move.

Next, when the fabric 40 and the fiber assembly 50 are delivered to the first rotating body 150 from the upstream conveying device 130, the fabric 40 and the fiber assembly 50 are passed through the gap between the opposing upstream conveyor belt 130a and the outer peripheral surface 150a , That is, pass the closest position of the upstream conveying device 130 and the first rotating body 150 (passing step). Thereby, it is sandwiched between the upstream conveyor belt 130a and the outer peripheral surface 150a. The fabric 40 and the fiber assembly 50 that are crushed in the thickness direction have a thinner thickness of the fiber assembly 50, and the fibers can be stabilized. Thereby, the fear that the fiber can be moved and the fiber density of the fiber assembly 50 will vary is reduced.

＜＜The second transport step＞＞ When the fabric 40 and the fiber assembly 50 are delivered from the upstream conveying device 130 to the first rotating body 150, the fiber density tends to change easily in response to changes in the conveying state. In the manufacturing apparatus 101 shown in FIG. 11, when the fabric 40 is in contact with the first rotating body 150, if the first rotating body 150 is used for conveying, the fiber assembly 50 is conveyed on the outermost side with respect to the conveying surface. It is transported in a state with a high degree of freedom. At this time, since the fiber assembly 50 is transported along the arc of the first rotating body 150 from bottom to top, the fibers of the fiber assembly 50 with a high degree of freedom are easily spread in the transport direction. Then, since water f is sprayed on the fiber assembly 50 in the state where the fibers are spread in the conveying direction in the entanglement step, the unevenness of the fibers of the fiber assembly 50 generated in the sheet member 70 after manufacture can be easily reduced.

The first spray device 300 sprays water f toward the fabric 40 and the fiber assembly 50 held on the outer peripheral surface 150 a of the first rotor 150 from the radially outer side of the first rotor 150 to the inner side. The first injection device 300 in the manufacturing apparatus 101 includes two injection nozzles, and includes an injection nozzle 301 and an injection nozzle 302 in this order from the upstream side. By the jetting of the water f by the first jetting device 300, at least a part of the fibers of the fiber assembly 50 and the fabric 40 are entangled to form a sheet 60.

Next, the sheet is delivered 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 spray device 400 sprays the water f toward the sheet 60 from the outer side in the radial direction of the second rotating body 160 to the inner side. The second injection device 400 includes two injection nozzles, and includes an injection nozzle 401 and an injection nozzle 402 in this order from the upstream side. By the spraying of the water f by the second spraying device 400, the sheet 60 can be made into a state in which more fibers of the fiber assembly 50 are entangled with the fabric 40. In addition, it is more desirable to set the spray pressure of the sprayed water stream to be the smallest in the spray nozzle 301, and to increase the spray nozzle 302, the spray nozzle 401, and the spray nozzle 402 in this order. On the upstream side, since the fear of flying the fibers of the fiber assembly 50 due to the water jet is reduced, it is possible to make more fibers and the fabric 40 entangled on the downstream side.

＜＜Dehydration step＞＞ After the conveyance by the rotation of the second rotating body 160, the sheet 60 is conveyed from the second rotating body 160 to the downstream conveying device 140 as in the first embodiment, and then conveyed to the dehydrating device 250 for dehydration processing.

＜＜Cut step＞＞ The cutting process is performed after the dehydration process of the sheet 60. As in the first embodiment, the sheet 60 delivered from the dehydration device 250 is cut by the cutting device 500 at both ends in the CD direction at the cutting line S to form sheet members 70 (see FIG. 10).

<The manufacturing method of the sheet member 70 of the third embodiment> FIG. 12 is a diagram schematically showing a part of the manufacturing apparatus 102 used in the method of manufacturing the sheet member 70 according to the third embodiment. The basic structure of the manufacturing apparatus 102 is the same as that of the manufacturing apparatus 101. In the manufacturing device 102, the upstream conveying device 130 does not convey the fabric 40, but conveys the fabric 40 toward the first rotating body 150 by the rotation of the supply rotating body 180.

＜＜The first transportation step＞＞ In the first conveying step, the upstream conveying device 130 conveys the fiber assembly 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. In addition, the supply rotating body 180 is a so-called raw material roll that winds the continuous fabric 40 into a reel shape. The fabric 40 is conveyed by the supply rotating body 180, and the upstream conveying belt 130a can convey only the fiber assembly 50, which can further increase the conveying state to stabilize the fiber density. Therefore, it is easy to keep the fiber density uniform.

In addition to feeding the fabric 40 to the first rotating body 150 at a constant speed, it is desirable. For example, when the supply rotating body 180 uses a raw material roll, it is assumed that even if the peripheral speed of the supply rotating body 180 is controlled to be the same as that of the first rotating body 150 The peripheral speed becomes the same speed, but in fact the two will not always be the same. If these two speeds cannot be the same, uneven tension may occur. Therefore, as shown in FIG. 12, it is desirable to provide a tension control device 800 of the fabric 40 between the supply rotating body 180 and the first rotating body 150.

The tension control device 800 adjusts the tension of the fabric 40 when it is supplied to the first rotating body 150 to a predetermined value. The tension control device 800 includes a pair of fixed rollers 801 and a jumping roller 802 provided between the pair of fixed rollers 801. The jumping roller 802 is set to be able to reciprocate in the vertical direction, and the jumping roller 802 moves in the vertical direction by its own weight to keep the tension of the continuously released fabric 40 constant. With the movement of the dancer roller 802 in the vertical direction, the difference between the peripheral speed of the supply rotating body 180 and the peripheral speed of the first rotating body 150 is absorbed, and the tension of the fabric 40 supplied to the first rotating body 150 can be easily kept constant. . The tension control device 800 is provided in this way to prevent the fabric 40 from sagging, and because the fabric 40 and the fiber assembly 50 that maintain a constant tension can be laminated, it is easy to make the fiber density of the fiber assembly 50 uniform, allowing the fabric 40 to be made uniform. The unevenness due to the fiber density of the fiber assembly 50 of the sheet member 70 is reduced.

In addition, it is desirable that the peripheral speed of the supply rotating body 180 is equal to the peripheral speed of the first rotating body 150. The worry about loosening of the fabric 40 during transportation can be reduced. In addition, it is desirable that the peripheral speed of the first rotating body 150 is equal to or higher than the moving speed of the upstream conveyor belt 130a. The fiber assembly 50 is conveyed by the first rotating body 150 at a speed higher than the upstream conveying belt 130a, and the fiber assembly 50 is easily conveyed while spreading the fibers of the fiber assembly 50 in the conveying direction on the outer peripheral surface 150a of the first rotating body 150. Therefore, it is easy to alleviate the deviation of the fiber density of the fiber assembly 50 generated when the fiber assembly 50 is delivered to the first rotating body 150 from the upstream conveying belt 130a.

===Other embodiments === Although the embodiments of the present invention have been described above, the above-mentioned embodiments are intended to facilitate the understanding of the present invention, and are not intended to limit the explanation of the present invention. In addition, the present invention can be modified and improved as long as it does not deviate from its spirit, and it goes without saying that the present invention also includes equivalents. For example, there may be such a deformation as shown below.

In the above-mentioned embodiment, in the first transport step, the length of the fabric 40 in the CD direction is set to be shorter than the length of the fiber assembly 50 in the CD direction. As shown in FIG. 10, although the sheet 60 is opposite to the fiber assembly 50 The length W50 in the CD direction is set to be longer than the length W40 in the CD direction of the fabric 40, but it is not limited to this. The length W50 of the sheet 60 in the CD direction of the fiber assembly 50 may be set to be 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 related to another embodiment. As shown in FIG. 13, the fiber assembly 50 overlaps the aforementioned woven fabric 40 in the CD direction substantially over the entire area. In this way, the entanglement step of conveying and intertwining the fibers is carried out while the fabric 40 is in contact with the first rotating body 150, and substantially the entire area of the fiber assembly 50 is placed on the fabric 40. Therefore, in the entanglement step, the fibers are stabilized The fibers of the assembly 50 can be entangled with the fabric 40 while being transported.

In the above-mentioned embodiment, although a plurality of injection nozzles are provided in the first injection device 300, it is not limited to this. For example, the first spray device 300 may be provided with one spray nozzle, or a plurality of spray devices that spray water streams toward the first rotating body 150 may be provided. In addition, the number of injection nozzles included in the first injection device 300 may be arbitrarily changed. The same applies to the second injection device 400.

In addition, in the above-mentioned embodiment, although water f is used as the fluid sprayed from the first spray device 300 and the second spray device 400, it is not limited to this. For example, it may be a gas, and may not be limited to water but a liquid having a predetermined composition and viscosity.

1: Sanitary napkins (sanitary napkins, absorbent articles) 2: absorber 3: Surface sheet (sheet member) 4: back sheet 5: Side sheet 6: Wings 8: Outer peripheral seal 10: Absorbent core 11: Adhesion area 12: Adhesive area for wings 20: core cladding sheet 40: fabric 41: Composition yarn 42: warp 43: Weft 45: Weaving 50: Fiber assembly 51: constituent fiber 60: flakes 70: sheet member 100: Manufacturing device 101: Manufacturing Device 102: Manufacturing Device 120: Roller for direction change 130: Upstream conveying device 130a: Upstream conveyor belt (conveyor belt) 130b: Roll 140: Downstream conveyor 140a: Downstream conveyor belt 150: The first rotating body (rotating body) 150a: outer peripheral surface 151: Suction Hole 152: Cylindrical partition 153: Next Door 160: The second rotating body 160a: outer peripheral surface 180: supply rotating body 200: water supply device 250: dehydration device 250a: conveyor belt 250b: Attraction Department 300: The first injection device 301: Jet nozzle 302: Jet nozzle 303: Jet nozzle 400: The second spray device 500: cutting device 501: Cutting Roll 502: Anvil Roll 800: Tension control device 801: fixed roller 802: Dancing roller f: water S: cut line SP: roughly enclosed space Dc1: circumferential Dc2: circumferential C150: Horizontal axis C160: horizontal axis C502: Rotation axis C501: Rotation axis

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 cross-sectional view taken along line X-X in Fig. 1. [Fig. [FIG. 4] is an enlarged view of a part of the surface sheet 3. [Fig. 5] A diagram showing a state where the surface sheet 3 is separated into a woven fabric 40 and a fiber assembly 50. Fig. 6 is a diagram schematically showing a part of the manufacturing apparatus 100 used in the method of manufacturing the sheet member 70 according to 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. 9] FIG. 9A thereof is a diagram schematically showing the injection nozzle 302. [FIG. FIG. 9B is a diagram schematically showing a configuration example of the injection hole of the injection nozzle 302. Fig. 10 is a diagram schematically showing a cross section in the CD direction of the sheet 60 of A in Fig. 6. Fig. 11 is a diagram schematically showing a part of the manufacturing apparatus 101 used in the method of manufacturing the sheet member 70 according to the second embodiment. Fig. 12 is a diagram schematically showing a part of the manufacturing apparatus 102 used in the method of manufacturing the sheet member 70 according to the third embodiment. Fig. 13 is a diagram schematically showing a cross section in the CD direction of a sheet 60 related to another embodiment.

40: fabric

50: Fiber assembly

70: sheet member

100: Manufacturing device

130: Upstream conveying device

130a: Upstream conveyor belt (conveyor belt)

130b: Roll

140: Downstream conveyor

140a: Downstream conveyor belt

150: The first rotating body (rotating body)

150a: outer peripheral surface

160: The second rotating body

160a: outer peripheral surface

200: water supply device

250: dehydration device

250a: conveyor belt

250b: Attraction Department

300: The first injection device

301: Jet nozzle

302: Jet nozzle

303: Jet nozzle

400: The second spray device

500: cutting device

501: Cutting Roll

502: Anvil Roll

C150: Horizontal axis

C160: horizontal axis

C501: Rotation axis

C502: Rotation axis

Dc1: circumferential

Dc2: circumferential

Claims (14)

A method for manufacturing a sheet member, which is a method for manufacturing a sheet member for absorbent articles having a fabric and a fiber assembly in a state intertwined with the fabric, characterized by: The first conveying step is to convey at least the aforementioned fiber assembly using a conveying conveyor belt, and The second transport step is to further transport the fabric and the fiber assembly transported in the first transport step using a rotating body having a suction mechanism, In the aforementioned second transport step, The fabric is transported by contacting the peripheral surface of the rotating body, The fluid is sprayed from the radially outer side to the inner side of the rotating body so that the fiber assembly and the fabric are intertwined. The method of manufacturing a sheet member according to claim 1, wherein The peripheral speed of the rotating body is equal to or higher than the moving speed of the conveyor belt. The method of manufacturing a sheet member according to claim 1 or 2, wherein The pressure of the fluid injected by the upstream injection port arranged on the upstream side of the rotation of the rotating body is less than the pressure of the fluid injected by the downstream injection port arranged on the downstream side of the rotation of the rotating body . The method of manufacturing a sheet member described in any one of claims 1 to 3, wherein: The conveying surface of the conveying conveyor belt is set at the same height as the rotation center of the rotating body, or a position higher than the rotation center, After the start of the conveyance in the second conveyance step, the fiber assembly is conveyed upward along the rotation direction of the rotating body. The method of manufacturing a sheet member described in claim 4, wherein: The length of the rotating body of the woven fabric in the direction of the rotation axis is equal to or less than the length of the fiber assembly in the direction of the rotation axis. The method of manufacturing a sheet member described in any one of claims 1 to 3, wherein: The conveying surface of the conveying conveyor belt is arranged below the rotation center of the rotating body, Between the aforementioned first transport step and the aforementioned second transport step, Furthermore, there is a passing step of the fiber assembly passing the closest position of the rotating body and the conveying belt. The method of manufacturing a sheet member according to claim 6, wherein The length of the rotating body of the woven fabric in the direction of the rotation axis is greater than or equal to the length of the fiber assembly in the direction of the rotation axis. The method of manufacturing a sheet member according to claim 6 or 7, wherein In the first conveying step, the conveying belt does not convey the fabric, There is a supply step of supplying the fabric to the rotating body before the second conveying step. The method of manufacturing a sheet member according to claim 8, wherein In the supply step, the fabric continuously released by the rotation of the supply rotating body is supplied to the rotating body with a certain tension. The method of manufacturing a sheet member according to claim 9, wherein The peripheral speed of the aforementioned supply rotating body is equal to the peripheral speed of the aforementioned rotating body, The peripheral speed of the rotating body is a speed equal to or higher than the moving speed of the conveyor belt. The method of manufacturing a sheet member described in any one of claims 1 to 10, wherein: In the first conveying step, a process of reducing the thickness of the fiber assembly is performed. The method of manufacturing a sheet member according to claim 11, wherein The treatment for reducing the thickness of the aforementioned fiber assembly is fluid jet treatment. The method of manufacturing a sheet member according to claim 11, wherein The process for reducing the thickness of the fiber assembly is to allow the fiber assembly to pass between the facing conveyor belt and the rotating body. A manufacturing device for a sheet member is a manufacturing device for a sheet member for absorbent articles having a fabric and a fiber assembly in a state intertwined with the fabric, characterized in that: Conveyor belt, which conveys at least the aforementioned fiber assembly, A rotating body provided with a suction mechanism, which conveys the fabric in a state where the fabric is in contact with the peripheral surface, and the fiber assembly that is transported by the transport conveyor belt, and The entanglement part injects fluid from the outer side to the inner side of the rotating body in the radial direction so that the fiber assembly and the fabric are entangled.

Images