Facial mask sheet rolling device and facial mask sheet rolling method

Abstract

To obtain a cylindrical sheet winding body more reliably without losing its shape in a winding device in which a face pack sheet is wound to obtain a sheet winding body.SOLUTION: A winding device of the present invention includes: a hollow cylindrical winding shaft 21 that extends in a left-right direction and winds a sheet body 13; and a drive mechanism 22 that rotates the winding shaft 21 around an axial direction thereof. A slit 29 extending in the left-right direction is formed on a cylindrical surface of the winding shaft 21 so as to be communicated with an opening 28 on a play end side. After the sheet body 13 is pushed into a hollow 27 of the winding shaft 21 through the slit 29, the winding shaft 21 is rotated to wind the sheet body 13 on an outer peripheral surface of the winding shaft 21, thereby a cylindrical sheet winding body 3 is produced.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a device for rolling a face pack sheet and a method for rolling a face pack sheet. [Background technology]

[0002] In the winding device and the winding method of the present invention, a face pack sheet is wound in a spiral shape to produce a cylindrical sheet roll, and the method of winding a face pack sheet in a spiral shape to produce a cylindrical sheet roll itself is disclosed in, for example, Patent Documents 1 to 3. In Patent Document 1, a face pack sheet in two folded shape made by punching a nonwoven fabric is further folded in the short direction, and then one of the longitudinal directions of the folded face pack sheet is used as the winding start end to wind it in a spiral shape to produce a cylindrical sheet roll. In Patent Document 2, a support sheet is superimposed on a face pack sheet folded in two, and these are wound around a rod-shaped core to produce a cylindrical sheet roll. In Patent Document 3, a face pack sheet is introduced between an upper rotating belt and a lower rotating belt like a belt conveyor that are arranged opposite each other and rotate in opposite directions, and the face pack sheet is wound in a spiral shape to produce a cylindrical sheet roll. The cylindrical sheet roll thus formed is carried in the form of a sheet package sealed and packaged in a packaging bag together with a drug solution. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-81612 [Patent Document 2] JP 2011-189990 A [Patent Document 3] JP 2017-52532 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the winding method of Patent Document 1, it is difficult to automate the procedure of gripping the start of the roll of the folded face pack sheet and the procedure of winding the face pack sheet from the gripped start of the roll. For this reason, it is difficult to obtain a sheet roll with good productivity by this method. The same is true for the winding method of Patent Document 2, and it is difficult to automate the procedure of winding the face pack sheet around a rod-shaped core body, so it is difficult to obtain a sheet roll with good productivity by this method. If the winding method of Patent Document 3 is adopted, it is possible to automate the process, but in reality, it is difficult to feed the face pack sheet in the same direction as the rotation direction of the belt (the direction defined by the rotation direction of the upper rotating belt), and if the posture of the face pack sheet when fed is inclined, the face pack sheet will be wound in an oblique direction and will lose its shape. Thus, in the winding method of Patent Document 3, it is difficult to uniform the shape of the obtained sheet roll, and it is difficult to reliably obtain a cylindrical sheet roll.

[0005] To provide a winding device and a winding method for winding a face pack sheet to obtain a rolled sheet body, which can be automated and can more reliably obtain a cylindrical rolled sheet body without losing its shape. [Means for solving the problem]

[0006] The present invention is directed to a face pack sheet winding device that spirally winds a sheet body 13 formed by folding a face pack sheet 2 into a cylindrical roll-shaped sheet body 3. The winding device includes a hollow cylindrical winding shaft 21 that extends in the left-right direction and winds up the sheet body 13, a drive mechanism 22 that supports the winding shaft 21 in a cantilevered manner and rotates the winding shaft 21 about its axial center direction, an attachment means 23 that is responsible for attaching the sheet body 13 to the winding shaft 21, and a separation means 24 that is responsible for separating the sheet body 13 from the winding shaft 21. A slit 29 that extends in the left-right direction is formed on the cylindrical surface of the winding shaft 21 and communicates with an opening 28 on the free end side. The mounting means 23 includes a blade 30 that pushes a portion of the sheet body 13 into the hollow portion 27 of the winding shaft 21 through a slit 29, and an inward / outward moving means that moves the blade 30 between an operating position where its tip is inserted into the slit 29 and a standby position where its tip is located outside the winding shaft 21. The separating means 24 includes a holder 35 that holds the sheet roll 3 wound around the outer periphery of the winding shaft 21, and a moving means that moves the sheet roll 3 held by the holder 35 relatively toward the free end side in the axial direction of the winding shaft 21 to separate the sheet roll 3 from the winding shaft 21. The sheet roll 3 is pushed into the hollow portion 27 of the winding shaft 21 by the blade 30, and then the winding shaft 21 is rotated to wind the sheet body 13 around the outer periphery of the winding shaft 21, thereby forming a cylindrical sheet roll 3. In the present invention, the "hollow cylindrical shape" of the winding shaft 21 is a concept that includes not only a hollow cylindrical shape as shown in Fig. 5, but also a columnar shape having a space inside as shown in Fig. 10(a) to (c). Also, the "cylindrical surface" of the winding shaft 21 in the present invention is a concept that includes the side surface (outer peripheral surface) of the columnar shape.

[0007] The winding shaft 21 may be configured to include a pressing means 25 that applies a pressing force to the outer peripheral surface of the sheet body 13 wound around the winding shaft 21 in a direction toward the winding center C of the winding shaft 21.

[0008] The pressing means 25 can be configured to have a roller 38 that is freely rotatable around a rotation axis 36 extending in the left-right direction, a guide 39 that guides and supports the roller 38 so that it can move toward the winding center C, and a biasing member 40 that biases the roller 38 in the direction toward the winding center C along the guide 39.

[0009] A liquid supplying means 26 for supplying a chemical solution to the sheet body 13 may be provided.

[0010] The present invention also relates to a method for winding a face pack sheet, in which a sheet body 13 obtained by folding a face pack sheet 2 is spirally wound to produce a cylindrical roll-shaped sheet body 3. This winding method is characterized by including an arrangement step of arranging the folded sheet body 13 near a hollow cylindrical winding shaft 21 extending in the left-right direction; a holding step of pushing a part of the sheet body 13 into a hollow portion 27 of the winding shaft 21 through a slit 29 formed in the cylindrical surface of the winding shaft 21, the slit 29 communicating with an opening 28 at the end of the tube, and holding the sheet body 13 in the hollow portion 27 of the winding shaft 21; a winding step of rotating the winding shaft 21 and winding the sheet body 13 around the outer circumferential surface of the winding shaft 21 to produce a cylindrical roll-shaped sheet body 3; and a separation step of engaging the sheet body 3 formed on the outer periphery of the winding shaft 21, and then moving the sheet body 3 relatively toward the free end side in the axial direction of the winding shaft 21 to separate the sheet body 3 from the winding shaft 21.

[0011] Prior to the winding step or during the winding step, a liquid supplying step can be included in which a chemical solution is supplied to the sheet body 13 to impregnate it. Effect of the Invention

[0012] In the winding device 20 of the present invention, the sheet body 13 formed by folding the face pack sheet 2 so as to cover the slit 29 of the winding shaft 21 is placed, and then the advance / retraction means constituting the mounting means 23 is driven to move the blade 30 from the standby position to the operating position, and the sheet body 13 is pushed into the hollow portion 27 of the winding shaft 21. Next, the winding shaft 21 is rotated about its axis by the drive mechanism 22, and the sheet body 13 is wound around the outer circumferential surface of the winding shaft 21, to produce a cylindrical sheet roll 3. Then, after the winding, the sheet roll 3 is moved to the free end side in the axial direction of the winding shaft 21 while being held by the holder 35 constituting the separating means 24, and the sheet roll 3 is separated from the winding shaft 21. As described above, according to the present invention, a series of winding operations from mounting the sheet body 13 on the winding shaft 21 to winding by the winding shaft 21 and then separation from the winding shaft 21 can be automated.

[0013] In this manner, a portion of the sheet body 13 is pushed into the hollow portion 27 of the winding shaft 21 through the slit 29 of the winding shaft 21, the sheet body 13 is attached and held in the hollow portion 27 of the winding shaft 21, and the winding shaft 21 is then rotated about its axial direction to wind up the sheet body 13 on the outer circumferential surface of the winding shaft 21 to produce the sheet roll 3. By simply optimizing the posture of the sheet body 13 when it is pushed into the hollow portion 27 through the slit 29, it is possible to prevent the obtained sheet roll 3 from losing its shape, and to obtain a cylindrical sheet roll 3 more easily and reliably. Specifically, the shape of the sheet body 13 obtained by folding the face pack sheet 2 can be various shapes derived from the shape and folding method of the face pack sheet 2, such as the shape shown in Fig. 3(b) and the shape shown in Fig. 8(b), but in any case, the winding operation can be carried out without the left and right edges of the sheet body 13 being misaligned in the left and right direction simply by aligning the width direction of the sheet body 13 when it is pushed onto the winding shaft 21 with the left and right direction that is the axial direction of the winding shaft 21, so that the sheet roll 3 can be prevented from losing its shape and the sheet roll 3 can be made cylindrical. However, the sheet body 13 may be wound with the length direction aligned with the left and right direction that is the axial direction of the winding shaft 21, and this also prevents the sheet roll 3 from losing its shape and allows the obtained sheet roll 3 to be made cylindrical.

[0014] If the sheet body 13 is held by the winding shaft 21 by pushing a part of the sheet body 13 into the hollow portion 27 of the winding shaft 21 through the slit 29 of the winding shaft 21 with the blade 30, the sheet body 13 can be securely attached and held in the hollow portion 27, and therefore it is possible to prevent the sheet body 13 from accidentally slipping out of the hollow portion 27. Therefore, the winding operation of the sheet body 13 can be carried out more efficiently, and the sheet roll 3 can be reliably obtained.

[0015] If the pressing means 25 is provided to apply a pressing force to the outer peripheral surface of the sheet body 13 wound by the winding shaft 21 in the direction toward the winding center C of the winding shaft 21, the sheet body 13 wound by the sheet roll 3 during winding can be prevented from floating off the sheet roll 3. Therefore, it is possible to prevent the sheet body 13 from shifting during winding and the sheet roll 3 from losing its shape. In addition, the phenomenon in which the sheet body 13 floats off during winding is likely to occur when the rotation speed of the winding shaft 21 is increased, but if the pressing means 25 is provided in this manner, it is possible to prevent the sheet body 13 from shifting during winding and prevent the sheet roll 3 from losing its shape even when the rotation speed of the winding shaft 21 is increased. In addition, if the winding operation is carried out while applying a pressing force to the outer peripheral surface of the sheet body 13 by the pressing means 25, the outer diameter dimension of the obtained sheet roll 3 can be made smaller, in other words, it can be wound up thinner, so that the obtained sheet roll 3 can be made more compact.

[0016] If the pressing means 25 has a roller 38 rotatable about a rotary shaft 36 extending in the left-right direction, a guide 39 that guides and supports the roller 38 so that it can move toward the winding center C, and a biasing member 40 that biases the roller 38 along the guide 39 in a direction toward the winding center C, even when the winding of the sheet body 13 progresses and the outer diameter dimension of the sheet roll 3 increases, the roller 38 moves along the guide 39 in a direction away from the winding center C while resisting the biasing force of the biasing member 40, so that the roller 38 is always pressed against the outer circumferential surface of the sheet roll 3 in the middle of being wound, and the winding operation can be carried out with the roller 38 in close contact with the outer circumferential surface of the sheet roll 3. This makes it possible to prevent the sheet body 13 from floating off during winding, and therefore to prevent the sheet body 13 from shifting during winding and the resulting sheet roll 3 from losing its shape. Since the roller 38 is configured to be freely rotatable around the rotating shaft 36, the roller 38 can be rotated in accordance with the winding of the sheet body 13 by the winding shaft 21. Therefore, even if the biasing force of the biasing member 40 is increased and the roller 38 is pressed against the sheet body 13 with a greater force, damage to the sheet body 13 by the roller 38 can be prevented.

[0017] If the liquid supplying means 26 for supplying the chemical solution to the sheet body 13 is provided, the chemical solution can be supplied to the sheet body 13 prior to winding, or the chemical solution can be supplied to the sheet body 13 during winding, so that the winding operation can be carried out with the sheet body 13 impregnated with the chemical solution. This can improve the adhesion between the sheet bodies 13 located on the inner and outer peripheries of the sheet roll 3, so that the sheet body 13 on the outer periphery can be prevented from accidentally floating off the sheet roll 3, and the sheet body 13 can be maintained in a wound state, and the sheet roll 3 can be prevented from losing its shape. There is also the advantage that the sheet roll 3 is less likely to lose its shape even when the rotation speed of the winding shaft 21 is increased, and the winding operation can be carried out more efficiently. [Brief description of the drawings]

[0018] [Figure 1]1A to 1D are diagrams showing the main parts of a rolling device and a rolling method for a face pack sheet according to a first embodiment of the present invention, in which (a) is a plan view showing the rolling device in a positioning process, (b) is a side view showing the rolling device in a holding process, (c) is a side view showing the rolling device in a rolling process, and (d) is a plan view showing the rolling device in a separation process. [Diagram 2] FIG. 2 is a diagram for explaining a rolling method of the face pack sheet according to the first embodiment. [Diagram 3] 1A and 1B are plan views for explaining a method for folding the face pack sheet, FIG. 1C is a plan view for explaining a method for rolling the sheet body, and FIG. 1D is an external perspective view of the produced rolled sheet body. [Figure 4] FIG. 2 is a perspective view of a main part of the winding device. [Diagram 5] FIG. 2 is a vertical sectional side view of a main part of the winding device. [Figure 6] FIG. 4 is a plan view showing a state in which the sheet roll is packaged in a packaging bag. [Figure 7] 7 is a cross-sectional view taken along line AA in FIG. 6. [Figure 8] 13(a) and (b) are plan views for explaining a method for folding a face pack sheet in a rolling device and rolling method for a face pack sheet in a second embodiment of the present invention, (c) is a plan view for explaining a rolling method for a sheet body, and (d) is an external perspective view of the produced rolled sheet body. [Figure 9] FIG. 2 is a vertical sectional side view of a main part of the winding device. [Figure 10] FIG. 11 is a side view showing another embodiment of the winding shaft. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] (First embodiment) Figures 1 to 7 show a first embodiment in which a rolling device and a rolling method for a face pack sheet according to the present invention are applied to the manufacture of a face pack sheet package. As shown in Figures 6 and 7, the face pack sheet package 1 is composed of a rolled sheet 3 obtained by rolling a face pack sheet 2 (see Figure 3(a)) into a spiral shape, a tray 4 long in the left-right direction for accommodating the rolled sheet 3, and a packaging bag 5 for sealingly packaging the rolled sheet 3 and the tray 4. Note that the terms front-rear, left-right, and up-down in this embodiment refer to the arrows shown in Figures 1, 3, 4, etc., and the indications of front-rear, left-right, and up-down indicated near each arrow.

[0020] As shown in FIG. 3(a), the face pack sheet 2 in the developed state is made of nonwoven fabric and is punched to have a flat circular outer shape, and the sheet surface has openings 7, 8, and 9 corresponding to the eyes, nose, and mouth. More specifically, the outer shape of the face pack sheet 2 is formed in an elliptical shape with different curvatures at the front and rear, and is formed in line symmetry with the center in the left-right direction as the axis of symmetry. A horizontal U-shaped cut is provided at approximately the center of the sheet surface to form an opening 8 corresponding to the nose, and horizontally elongated elliptical openings 7, 7 corresponding to the eyes are formed at the left and right rear sides. In addition, a total of ten linear cuts 10 are formed on the sheet periphery of the left and right rear sides and the left and right front sides to bring the sheet surface into close contact with the facial skin. The front-to-back dimension of the face pack sheet 2 in this embodiment is 210 mm, and the left-to-right dimension is 240 mm.

[0021] As shown in Fig. 3(a), a total of four fold lines 11 (11a-11b)-12 (12a-12b), two on each side, are set at symmetrical positions on the left and right of the face pack sheet 2 in the unfolded state, and by folding the face pack sheet 2 along these fold lines 11-12, a rectangular sheet body 13 with the longitudinal direction being the front-rear direction as shown in Fig. 3(b) can be obtained. More specifically, as shown in Fig. 3(a), first fold lines 11a-11b are set on the left and right outer sides of the central symmetrical axis in the left-right direction of the face pack sheet 2 in the unfolded state, and second fold lines 12a-12b are set on the left and right outer sides of these first fold lines 11a-11b. Then, the sheet is folded in a valley along the first fold line 11a on the left side, then in a mountain along the second fold line 12a on the left side, then in a valley along the first fold line 11b on the right side, and then in a mountain along the second fold line 12b on the right side, to obtain a rectangular sheet body 13 with the longitudinal direction in a plan view as shown in Fig. 3(b). As shown in the front view of Fig. 3(b), the sheet body 13 has a flat surface 14 on the lower side and a pair of left and right folding pieces 15·15 extending upward from the left and right ends of the flat surface 14. In the front view, each folding piece 15 is composed of a first folding piece 15a extending inward in the left and right direction from the left and right ends of the flat surface 14, and a second folding piece 15b extending from the left and right center of the first folding piece 15a to the left and right ends.

[0022] 1(a) to 1(c), 3(c), and 4 show an overview of the winding device 20. The winding device 20 winds the sheet body 13 in a spiral shape to produce a cylindrical roll-shaped sheet body 3, and includes a hollow cylindrical winding shaft 21 that extends in the left-right direction and winds up the sheet body 13, a drive mechanism 22 that supports the winding shaft 21 in a cantilevered manner and rotates the winding shaft 21 about its axis, an attachment section (attachment means) 23 that attaches the sheet body 13 to the winding shaft 21, a separation section (separation means) 24 that separates the sheet body 3 from the winding shaft 21, a pressing section (pressing means) 25 that applies a pressing force to the outer circumferential surface of the sheet body 3 wound by the winding shaft 21, and a liquid supplying section (liquid supplying means) 26 (see FIG. 2) that supplies a chemical solution to the sheet body 13.

[0023] The base end side (the right end side in FIG. 1(a)) of the winding shaft 21 is connected and held by the drive mechanism 22, and an opening 28 that communicates with the hollow portion 27 is formed in the cylindrical end of the free end side (the left end side in FIG. 1) of the winding shaft 21. A slit 29 that communicates with the opening 28 and extends in the left-right direction is formed in the cylindrical surface of the winding shaft 21. The left-right opening dimension of the slit 29 is set to be larger than the left-right width dimension of the sheet body 13. As shown in FIG. 5, a corner portion 29a, which is the outer opening edge in the front-rear direction of the cylindrical wall of the winding shaft 21 that defines the slit 29, is chamfered into an arc shape.

[0024] 4 and 5, the mounting section 23 has a blade 30 that pushes a portion of the sheet body 13 into the hollow section 27 of the winding shaft 21 through a slit 29, and an advancing / retracting mechanism (advancing / retracting means) not shown that moves the blade 30 between an operating position (see FIG. 5) where the tip of the blade 30 is inserted into the slit 29 and a standby position (see FIG. 4) where the tip of the blade 30 is positioned outside the winding shaft 21. In this embodiment, the sheet body 13 is configured so that a portion near one end in the longitudinal direction (front-rear direction) is pushed into the hollow section 27.

[0025] 1(b) and 5 show a state in which the blade 30 has moved to the operating position, and the blade 30 has pushed the sheet body 13 into the hollow portion 27 of the winding shaft 21, so that the sheet body 13 is attached to the winding shaft 21, in which the sheet body 13 is biased in this state, with a short piece portion 32 having a small length dimension in the front-to-rear direction and a long piece portion 33 having a large length dimension in the front-to-rear direction, with a holding portion 31 held by the slit 29 and the hollow portion 27 as a boundary. In this embodiment, in the attached state, the vicinity of the front end of the sheet body 13 is held by the winding shaft 21, and the short piece portion 32 is formed on the front side, and the long piece portion 33 is formed on the rear side.

[0026] As shown in Figs. 1(a)(d) and 4, the separation section 24, which is responsible for separating the sheet roll 3 from the winding shaft 21, is formed on the outer periphery of the winding shaft 21 and is composed of a holder 35 that holds the sheet roll 3, and a moving section (moving means) (not shown) that moves the holder 35 along the axial direction of the winding shaft 21. The holder 35 is formed in a cylindrical shape with an axial hole 35a at the center that allows the winding shaft 21 to pass through, and is moved in the left-right direction by the moving section between a standby position shown in Fig. 1(a) located on the base end side (right side) of the winding shaft 21 and an operating position shown in Fig. 1(d) located on the free end side (left side) of the winding shaft 21. When the holder 35 is in the standby position, the winding operation of the sheet body 13 by the winding shaft 21 proceeds, and the holder 35 moves to the operating position, so that the sheet roll 3 is positioned to the left of the free end of the winding shaft 21, and the sheet roll 3 can be separated from the winding shaft 21. In order to avoid contact interference with rollers 38 (described later) of pressing portion 25 when holder 35 moves left and right, a semicircular arc-shaped escape recess 35b is cut out over the entire peripheral surface of holder 35 in the left and right direction.

[0027] As shown in Fig. 1(a) to (c), a pressing unit 25 is provided obliquely below the winding shaft 21 in order to apply a pressing force to the outer peripheral surface of the sheet roll 3 wound by the winding shaft 21. The pressing unit 25 is composed of a rotating shaft 36 extending in the left-right direction, a float base 37 supporting the rotating shaft 36, a cylindrical roller 38 long in the left-right direction configured to be rotatable relative to the float base 37 around the rotating shaft 36, a guide 39 guiding and supporting the float base 37 and the roller 38 so that they can move toward the winding center C of the winding shaft 21, and a spring (urging member) 40 that urges the roller 38 in a direction toward the winding center C (diagonally upward) along the guide 39. The spring 40 is a torsion coil type compression spring, and is disposed between a base piece 39a of the guide 39 and the float base 37, and urges the roller 38 upward toward the winding center C via the float base 37. The guide 39 is made up of a base piece 39a fixed to a frame 41 of the winding device, and leg pieces 39b, 39b protruding from above and below the base piece 39a and supporting the top and bottom of the float base 37. A rotating shaft 36 made of a round shaft protrudes from the left and right ends of the roller 38, and bearing holes 37b for receiving the rotating shaft 36 are formed in the float frames 37a located on the left and right sides of the upper end of the float base 37.

[0028] 2, liquid supply unit 26 that supplies chemical liquid to sheet body 13 is composed of nozzle 44 that sprays chemical liquid onto the upper surface of sheet body 13 before it is wound around winding shaft 21, and a pump, tank, tube, etc. (not shown) that supply chemical liquid to nozzle 44. In this embodiment, the chemical liquid is sprayed from nozzle 44 onto the entire upper surface of sheet body 13.

[0029] Next, a method for producing the mask sheet packaging body 1 including the rolling device 20 will be described with reference to FIG.

[0030] (Punching Process P1) In this process, a face pack sheet 2 is punched out using a roll cutter 47 from a nonwoven sheet material 46 continuously supplied from an original roll 45. At this time, the front and rear directions of the face pack sheet 2 are punched out along the conveying direction of the sheet material 46, and at the same time, openings 7, 8, 9 corresponding to the eyes, nose, and mouth, and a cut 10 are formed. After punching, the sheet material 46 is taken up and collected by a collection roll 48, and the punched face pack sheet 2 is transferred to a folding process P2 by a first conveyor C1 that runs horizontally.

[0031] (Folding process P2) In this process, the face pack sheet 2 is folded at a total of four fold lines 11 (11a, 11b) and 12 (12a, 12b) that extend in the front-rear direction and are parallel to the conveying direction (see FIG. 3(a)). As a result, the face pack sheet 2 is formed into a rectangular sheet body 13 whose outer shape is elongated in the front-rear direction (see FIG. 3(b)). The sheet body 13 has a flat surface 14 on the lower side and folding pieces 15, 15 on the upper side.

[0032] (First liquid supplying step P3) In this step, a predetermined amount of liquid is sprayed from the nozzle 44 of the liquid supplying unit 26 onto the upper surface side of the rectangular sheet body 13 that is long in the front-rear direction, so that the sheet body 13 is impregnated. The amount of liquid impregnated in this step is such that the upper folded pieces 15·15 come into close contact with the flat surface 14 when the sheet body 13 is rolled in the subsequent rolling step P4. This prevents the folded pieces 15·15 from moving away from the flat surface 14 and unintentionally unfolding, so that the rolling work can be carried out more efficiently while maintaining the shape of the sheet body 13. In addition, by carrying out the rolling work in a state where the sheet body 13 is impregnated with the liquid, the adhesion between the sheet bodies 13 located on the inner and outer peripheries that constitute the sheet roll 3 is improved, and the sheet body 13 located on the outer periphery side is prevented from unintentionally floating off the sheet roll 3, so that the sheet roll 3 can be prevented from losing its shape.

[0033] (Winding process P4) In this process, the winding device 20 winds the rectangular sheet body 13 impregnated with a predetermined amount of chemical solution to obtain a sheet roll 3. The sheet body 13 obtained in the liquid supplying process P3 is moved to a mounting position by the first conveyor C1 and the second conveyor C2 installed at a predetermined distance forward from the front end of the first conveyor C1. Here, the sheet body 13 is disposed above the winding shaft 21 provided between the first conveyor C1 and the second conveyor C2 (disposing process). Next, the sheet body 13 is inserted and mounted in the hollow portion 27 of the winding shaft 21 by the mounting section 23 including the blade 30, thereby holding a part of the sheet body 13 on the winding shaft 21 (holding process). Then, the winding shaft 21 is rotated counterclockwise to wind the sheet body 13 around the outer circumferential surface of the winding shaft 21 to obtain a sheet roll 3 (winding process in a narrow sense). Since the winding shaft 21 rotates counterclockwise, the short piece 32 located on the front side is swung and oscillated largely backward in the initial rotation, but the entire short piece 32 is wound up on the winding shaft 21 while the winding shaft 21 makes about one rotation. Meanwhile, as the winding shaft 21 rotates, the long piece 33 located on the rear side is wound up on the winding shaft 21 one by one, starting from the part close to the holding part 31. At this time, the winding operation is proceeded while the roller 38 of the pressing part 25 applies a pressing force to the outer circumferential surface of the sheet roll 3 in the middle of being wound. In addition, as the winding of the sheet body 13 proceeds, the outer diameter dimension of the sheet roll 3 increases, but even at this time, the roller 38 moves along the guide 39 in a direction away from the winding shaft 21 while resisting the biasing force of the spring 40, so the winding operation is proceeded while the roller 38 is always pressed against the outer circumferential surface of the sheet roll 3 in the middle of being wound. After the winding is completed, the holder 35 is moved to the operating position, whereby the sheet roll 3 is separated from the winding shaft 21 (separation process).

[0034] (Storage step P5) In this step, the cylindrical roll-shaped sheet roll 3 produced by the winding device 20 is stored in the storage chamber 50 of the tray 4. In this embodiment, the sheet roll 3 separated from the winding shaft 21 by the separation section 24 is received by the tray 4, and the sheet roll 3 is stored in the storage chamber 50. At this time, the sheet roll 3 impregnated with the chemical solution is in a state in which the sheet end portion at the winding termination side is stuck to the wound part by the chemical solution, so that the sheet roll 3 is difficult to unwind and the rolled shape is maintained. The sheet roll 3 stored in the tray 4 is transferred to the liquid supply step P6 by the third conveyor C3.

[0035] (Second liquid supplying step P6) In this step, the chemical liquid is supplied from the nozzle 49 to the sheet roll 3 stored in the tray 4. The amount of chemical liquid impregnated into the sheet body 13 in the previous first liquid supplying step P3 and the amount of chemical liquid supplied to the sheet roll 3 in this liquid supplying step P6 constitute the total amount of chemical liquid supplied to the pack sheet packaging body 1. Any chemical liquid that is not impregnated into the sheet roll 3 during supply accumulates in the storage chamber 50 of the tray 4. The tray 4 and the sheet roll 3 that have undergone the second liquid supplying step P6 are transferred to the sealing step P7 by the fourth conveyor C4.

[0036] (Sealing process P7) In this process, the upper opening 51 of the tray 4 in which the sheet roll 3 is accommodated is closed with a sealing film 52. As shown in FIG. 7, the tray 4 is a resin molded product having a rectangular bottom wall 53 elongated from left to right and a peripheral wall 54 erected from the four peripheral edges of the bottom wall 53, and a flange wall 55 for welding the sealing film 52 is formed on the upper end of the peripheral wall 54 by protruding. The tray 4 is made of a transparent resin such as polyethylene, polypropylene, or polyethylene terephthalate, and is molded by a vacuum molding method, an injection molding method, a blow molding method, or the like. The sealing film 52 is formed by punching a transparent plastic film into a horizontally elongated rectangular shape one size larger than the upper opening 51. The sealing film 52 is formed of a soft plastic film having gas barrier properties and resistance to chemicals, and its peripheral edge is welded to the flange wall 55 of the tray 4.

[0037] (Packaging process P8) In this process, the tray 4 containing the rolled sheet 3 and having its upper opening 51 sealed with a sealing film 52 is sealed and packaged in a packaging bag 5. The packaging is performed using a known continuous pillow packaging machine, whereby the cylindrical rolled sheet 3 impregnated with the drug solution and the tray 4 containing the rolled sheet 3 are sealed and packaged in the packaging bag 5 to complete the pack sheet packaging 1. C5 denotes a fifth conveyor that transports the pack sheet packaging 1.

[0038] As described above, in this embodiment, a part of the sheet body 13 is pushed into the hollow portion 27 of the winding shaft 21 through the slit 29 of the winding shaft 21, the sheet body 13 is held in the hollow portion 27, and the winding shaft 21 is rotated about its axial direction to wind the sheet body 13 on the outer circumferential surface of the winding shaft 21 to produce the sheet roll 3. Therefore, by simply optimizing the posture of the sheet body 13 when it is pushed into the hollow portion 27 through the slit 29, it is possible to prevent the obtained sheet roll 3 from losing its shape, and to obtain a cylindrical sheet roll 3 more easily and reliably. Specifically, by simply aligning the posture of the sheet body 13 when it is pushed into the winding shaft 21 so that its width direction coincides with the left-right direction, the winding operation can be carried out without the left-right edges of the sheet body 13 being misaligned from the left-right direction, and the cylindrical end faces of the obtained sheet roll 3 are aligned. This prevents the rolled sheet body 3 from losing its shape (for example, from losing its shape like a bamboo shoot), and ensures that the rolled sheet body 3 is cylindrical.

[0039] The blade 30 pushes the vicinity of one longitudinal end of the sheet body 13 into the hollow portion 27 of the winding shaft 21 through the slit 29 of the winding shaft 21, thereby causing the sheet body 13 to be held by the winding shaft 21, so that the sheet body 13 can be made to overlap within the hollow portion 27 of the winding shaft 21. This prevents the sheet body 13 from accidentally slipping out of the hollow portion 27 and ensures that the sheet body 13 is securely attached to the hollow portion 27 of the winding shaft 21, so that the winding operation of the sheet body 13 can be carried out more efficiently and the sheet roll 3 can be reliably obtained.

[0040] Since the chemical solution is sprayed onto the upper surface of the sheet body 13 prior to the blade 30 pushing the sheet body 13 into the hollow portion 27 of the winding shaft 21, the winding operation can be performed with the sheet body 13 wet. This improves the adhesion of the folded pieces 15 constituting the sheet body 13 to the flat surface 14, and the winding operation can be performed while preventing the folded pieces 15 from unfolding inadvertently, so that the winding operation can be performed more efficiently.

[0041] Since the winding operation is carried out while pressing the roller 38 of the pressing unit 25 against the outer peripheral surface of the sheet roll 3 in the middle of winding, the wound sheet body 13 is prevented from floating off the sheet roll 3, and the sheet body 13 is prevented from shifting during winding, which causes the sheet roll 3 to lose its shape. Even when the winding of the sheet body 13 by the winding shaft 21 progresses and the outer dimensions of the sheet roll 3 become larger, the roller 38 moves along the guide 39 in a direction away from the winding center C while resisting the biasing force of the spring 40, so that the winding operation can be carried out while always pressing the roller 38 against the outer peripheral surface of the sheet body 13 wound by the winding shaft 21. If the winding operation is carried out while pressing the roller 38 of the pressing unit 25 against the outer peripheral surface of the sheet roll 3 in the middle of winding, the outer diameter dimension of the obtained sheet roll 3 can be made smaller, in other words, the sheet roll can be wound up thinner, so that the obtained sheet roll 3 can be made more compact. Since the roller 38 rotates in accordance with the rotation of the sheet roll 3, the sheet body 13 is not damaged by the roller 38.

[0042] 8 and 9 show a second embodiment of a rolling device and rolling method for a face pack sheet according to the present invention. This second embodiment differs from the first embodiment in the shape of the face pack sheet 2 and the folding method thereof, the mounting position of the sheet body 13 in the hollow part 27 of the winding shaft 21 by the mounting part 23, and the method of supplying the medicinal liquid by the liquid supply part 26.

[0043] As shown in FIG. 8(a), the face pack sheet 2 in this embodiment has a crescent-shaped outer shape in the unfolded state, and openings 7 corresponding to human eyes are punched out on the sheet surface. More specifically, the outer shape of the face pack sheet 2 is a crescent shape with uneven curved edges at the front and rear and sharp points at the left and right. The face pack sheet 2 is also formed in line symmetry with the center in the left-right direction as the axis of symmetry. On the left and right sides of the rear side in the front-rear direction, horizontally elongated elliptical openings 7·7 corresponding to human eyes are formed. A total of six linear cuts 10 are formed on the left and right sides of the rear side in the front-rear direction and on the left and right sides of the center in the front-rear direction on the sheet periphery to bring the sheet surface into close contact with the facial skin.

[0044] As shown in Fig. 8(a), two fold lines 11 and 12 are set at symmetrical positions on the left and right of the face pack sheet 2 in an unfolded state, and by folding the face pack sheet 2 along these fold lines 11 and 12, a rectangular sheet body 13 with the longitudinal direction as shown in Fig. 8(b) can be obtained. More specifically, as shown in Fig. 8(a), the fold lines 11 and 12 are set at positions that divide the width dimension in the lateral direction of the face pack sheet 2 in an unfolded state into thirds, and by folding the sheet along the fold line 11 on the right side and then along the fold line 12 on the left side, a vertically elongated sheet body 13 with the longitudinal direction as viewed from the front and rear can be obtained as shown in Fig. 8(b). As shown in the front view of Fig. 8(b), the sheet body 13 is folded in an inverted Z shape with a flat surface 14 in the center and two folding pieces 15 and 15 extending upward and downward from the left and right ends of the flat surface 14.

[0045] As shown in Fig. 8(c), in this embodiment, the central portion of the longitudinal direction (front-rear direction) of the sheet body 13 is attached to the winding shaft 21, and the winding operation is carried out by rotating the winding shaft 21 from this attached state, to produce the sheet roll 3. Fig. 9 shows the state of the sheet roll 3 in the middle of winding, and in this embodiment, the winding operation is carried out in a state in which the front and rear parts (see Fig. 8(c)) of the sheet body 13 are overlapped.

[0046] As shown in FIG. 9, in this embodiment, a nozzle 44 is installed adjacent to the winding shaft 21, and a predetermined amount of chemical solution is sprayed onto the overlapping portion. That is, in this embodiment, the first liquid supplying step P3 in FIG. 2 is omitted, and in the winding step P4, the sheet body 13 is impregnated with the chemical solution just before winding by the winding shaft 21. According to this, as in the first embodiment, the sheet body 13 is impregnated with the chemical solution, and the sheet body 13 located on the inner and outer peripheries constituting the sheet roll 3 is improved in adhesion with each other by proceeding with the winding operation in a state where the sheet body 13 located on the outer periphery side is prevented from accidentally floating off from the sheet roll 3, and therefore the sheet roll 3 can be prevented from losing its shape. In this embodiment, the winding shaft 21 is rotated clockwise.

[0047] Points other than those mentioned above are the same as those in the first embodiment, so a description thereof will be omitted.

[0048] (Other embodiments) The cross-sectional shape of the winding shaft 21 according to the present invention is not limited to that shown in the first embodiment, and may be, for example, as shown in the side views of Figs. 10(a) to (c). Specifically, as shown in Figs. 10(a) and (b), the cylindrical winding shaft 21 may be provided with a sinkhole 60 communicating with the slit 29, thereby forming the hollow portion 27. In Fig. 10(a), the inner wall surface extends straight, the distance between the opposing wall surfaces is uniform, and the sinkhole 60 is formed in a straight shape in cross section, and the sinkhole 60 is defined as the "hollow portion 27" of the present invention. In Fig. 10(b), the inner wall surface is a curved surface, the distance between the opposing wall surfaces is wide in the center, and the sinkhole 60 is formed in an egg shape in cross section, and the sinkhole 60 is defined as the "hollow portion 27" of the present invention. In FIG. 10(c), a through hole 61 that is straight in cross section and has a uniform distance between opposing wall surfaces is drilled in the winding shaft 21, and this through hole 61 is defined as the "hollow portion 27" of the present invention.

[0049] The shape of the face pack sheet 2 in the present invention is not limited to that shown in the embodiment. The folding method of the face pack sheet 2 is not limited to that shown in the embodiment, and the shape of the sheet body 13 is not limited to that shown in the embodiment. The timing of supplying the chemical liquid by the nozzle 44 constituting the liquid supply unit 26 is not limited to that shown in the embodiment, and may be, for example, a form in which only the start end of the sheet body 13 is impregnated with the chemical liquid prior to rolling, or a form in which only the end end of the sheet body 13 is impregnated with the chemical liquid immediately before the rolling is completed. The biasing member 40 may be an air cylinder. [Explanation of symbols]

[0050] 1 pack sheet packaging 2 Face mask sheets 3. Sheet roll 13 Sheet body 20 Winding device 21 Winding shaft 22 Drive mechanism 23 Attachment means (attachment part) 24 Separation means (separation section) 25 Pressing means (pressing part) 26 Liquid supply means (liquid supply section) 27 Hollow part 28 Opening 29 Slit 30 Blades 35 Holder 36 Rotation Axis 38 Lola 39 Guide 40 Spring C Winding center of winding shaft

Claims

1. A winding device for producing a cylindrical roll-shaped sheet body (3) by spirally winding a sheet body (13) obtained by folding a face pack sheet (2), comprising: The sheet winding device includes a hollow cylindrical winding shaft (21) that extends in the left-right direction and winds up the sheet body (13), a drive mechanism (22) that supports the winding shaft (21) in a cantilevered manner and rotates the winding shaft (21) about its axis, an attachment means (23) that is responsible for attaching the sheet body (13) to the winding shaft (21), and a separation means (24) that is responsible for separating the sheet roll (3) from the winding shaft (21), A slit (29) extending in the left-right direction is formed on the cylindrical surface of the winding shaft (21) and communicates with an opening (28) on the free end side. The mounting means (23) includes a blade (30) that pushes a portion of the sheet body (13) into the hollow portion (27) of the winding shaft (21) through a slit (29), and an inward / outward moving means that moves the blade (30) between an operating position where its tip is inserted into the slit (29) and a standby position where its tip is positioned outside the winding shaft (21); The separation means (24) includes a holder (35) that holds the sheet roll (3) wound around the outer periphery of the winding shaft (21), and a moving means that relatively moves the sheet roll (3) held by the holder (35) toward the free end side in the axial direction of the winding shaft (21) to separate the sheet roll (3) from the winding shaft (21), The face pack sheet winding device is configured to produce a cylindrical sheet roll (3) by pushing the sheet body (13) into a hollow portion (27) of a winding shaft (21) with a blade (30), and then rotating the winding shaft (21) to wind up the sheet body (13) on the outer circumferential surface of the winding shaft (21).

2. 2. The face pack sheet winding device according to claim 1, further comprising a pressing means (25) for applying a pressing force to the outer peripheral surface of the sheet body (13) wound by the winding shaft (21) in a direction toward the winding center (C) of the winding shaft (21).

3. 3. The face pack sheet rolling device according to claim 2, wherein the pressing means (25) comprises a roller (38) configured to be rotatable about a rotation axis (36) extending in the left-right direction, a guide (39) that guides and supports the roller (38) so that the roller (38) can move toward the winding center (C), and a biasing member (40) that biases the roller (38) in a direction toward the winding center (C) along the guide (39).

4. 3. The face pack sheet rolling device according to claim 1, further comprising a liquid supplying means (26) for supplying a medicinal liquid to the sheet body (13).

5. A method for producing a cylindrical roll-shaped sheet body (3) by spirally winding a sheet body (13) obtained by folding a face pack sheet (2), comprising the steps of: a placement step of placing the folded sheet body (13) in the vicinity of a hollow cylindrical winding shaft (21) extending in the left-right direction; a holding step in which a slit (29) extending in the left-right direction is formed on the cylindrical surface of the winding shaft (21) and connected to an opening (28) at the end of the cylinder, and a part of the sheet body (13) is pushed through the slit (29) into a hollow portion (27) of the winding shaft (21) to hold the sheet body (13) in the hollow portion (27) of the winding shaft (21); a winding step of rotating the winding shaft (21) and winding the sheet body (13) around the outer peripheral surface of the winding shaft (21) to produce a cylindrical roll-shaped sheet body (3); a separation process in which the sheet roll (3) formed on the outer periphery of the winding shaft (21) is engaged and then the sheet roll (3) is relatively moved toward the free end side in the axial direction of the winding shaft (21) to separate the sheet roll (3) from the winding shaft (21); A method for rolling a face pack sheet, comprising the steps of:

6. 6. The method for rolling a face pack sheet according to claim 5, further comprising a liquid supplying step of supplying a chemical solution to the sheet body (13) to impregnate the sheet body (13) prior to or during the rolling step.

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