WO2016199543A1 - 複合シート並びに複合シートの製造装置及び製造方法 - Google Patents
複合シート並びに複合シートの製造装置及び製造方法 Download PDFInfo
- Publication number
- WO2016199543A1 WO2016199543A1 PCT/JP2016/064428 JP2016064428W WO2016199543A1 WO 2016199543 A1 WO2016199543 A1 WO 2016199543A1 JP 2016064428 W JP2016064428 W JP 2016064428W WO 2016199543 A1 WO2016199543 A1 WO 2016199543A1
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- WO
- WIPO (PCT)
- Prior art keywords
- roll
- sheet
- curved portion
- outer peripheral
- peripheral surface
- Prior art date
Links
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
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- 230000002093 peripheral effect Effects 0.000 claims description 71
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- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000007493 shaping process Methods 0.000 description 43
- 239000000463 material Substances 0.000 description 14
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- 230000002745 absorbent Effects 0.000 description 3
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- 238000004049 embossing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
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Images
Classifications
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- A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
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- A61F2013/51338—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability having improved touch or feeling, e.g. smooth film
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Definitions
- the present invention relates to a composite sheet, a composite sheet manufacturing apparatus, and a manufacturing method. More specifically, the present invention relates to a composite sheet in which a first sheet and a second sheet are joined, and a composite sheet manufacturing apparatus and manufacturing method.
- the first sheet 3 is formed with a recessed portion 3b along the joining portion 8, and is formed with a protruding portion 3a that relatively protrudes around the recessed portion 3b.
- the second sheet 6 is formed with a convex portion 6a that protrudes on the opposite side of the first sheet 3 along the joint portion 8, and a recess portion 6b that is relatively recessed is formed in the other portion. Yes.
- FIG. 10 is an explanatory diagram of a composite sheet manufacturing apparatus.
- a first roll 21 having a large number of concave portions 24 disposed on the surface
- a second roll 22 having a large number of convex portions 25 disposed on the surface
- a large number of concave portions 26 on the surface and a third roll 23 arranged.
- the first sheet 3 is passed between the first roll 21 and the second roll 22, and an embossing process is performed by meshing the concave portion 24 and the convex portion 25.
- the second sheet 6 is introduced to the outer periphery, and the sheets 3 and 6 are connected to the second roll 22 and the third roll.
- the embossing process is performed by meshing the convex portion 25 and the concave portion 26, and at the same time, the joint portion 8 is formed at the tip of the convex portion 25 of the second roll 22 (for example, , See Patent Document 1).
- the first sheet 3 side is in contact with the skin.
- the first sheet 3 and the second sheet 6 have cushioning properties because portions other than the joint portion 8 protrude to the same side and are in a floating state.
- the touch when in contact with the skin tends to be hard. If the material of the sheet is softened to obtain a soft feel, the uneven shape tends to be crushed, resulting in poor air permeability and a sticky feeling. For this reason, it is difficult to make the uneven shape difficult to be crushed while maintaining the soft touch when touching the skin.
- the problem to be solved by the present invention is to provide a composite sheet that can easily prevent crushing of an uneven shape while maintaining the softness of touch when touching the skin, and a composite sheet manufacturing apparatus and manufacturing Is to provide a method.
- the present invention provides a composite sheet configured as follows in order to solve the above-described problems.
- the composite sheet includes: (a) a first sheet having a curved portion where one surface is raised and the other surface is depressed; and a boundary portion adjacent to the curved portion; and (b) the curved portion of the first sheet.
- the first sheet is joined to the boundary portion of the first sheet so as to form a space between the curved portion and the first portion so as to approach the curved portion in a region facing the curved portion.
- a second sheet having a protrusion with a recessed outer surface on the opposite side to the first sheet, and a flat part surrounding the protrusion.
- the periphery of the protruding portion is surrounded between the first sheet and the second sheet. It is easy to form a space appropriately and soften the feel when one surface of the curved portion of the first sheet is in contact with the skin. Further, when the bending portion of the first sheet is deformed, the bending portion is supported by the protrusion portion of the second sheet. By providing the flat portion around the protrusion portion of the second sheet, the protrusion portion can be made difficult to be crushed. Therefore, it is easy to make the curved portion of the first sheet difficult to be crushed while maintaining the soft touch when touching the skin.
- the height of the protrusion from the surface of the flat portion on the first sheet side is the height of the other surface of the curved portion from the surface of the flat portion on the first sheet side. 30% or more.
- the present invention provides a composite sheet manufacturing apparatus configured as follows in order to solve the above-mentioned problems.
- the composite sheet manufacturing apparatus includes: (a) a first outer peripheral surface having a cylindrical shape, and a first roll that has a recess that recedes radially inward from the first outer peripheral surface; and (b) A cylindrical second outer peripheral surface that rotates in synchronization with the rotation of the first roll and faces the first outer peripheral surface; and the first roll that protrudes radially outward from the second outer peripheral surface.
- the curved portion of the first sheet having a curved portion where one surface is raised and the other surface is recessed and a boundary portion adjacent to the curved portion is accommodated in the concave portion of the first roll.
- the pressing portion of the second roll causes the second sheet to move.
- the inner surface on the first sheet side is raised so that the curved portion is surrounded by a flat portion in a region facing the curved portion of the second sheet by being pushed and deformed into the concave portion.
- the outer surface opposite the first sheet is recessed. It is possible to form a raised portion.
- the pressing portion of the second roll is inserted in a state where there is play in the concave portion of the first roll, so that a space is formed between the curved portion of the first sheet and the second sheet, A flat portion and a protrusion surrounded by the flat portion can be formed in a region of the second sheet that faces the curved portion.
- the composite sheet manufacturing apparatus further includes (c) a first heating unit that heats the pressing unit.
- the second sheet can be deformed while being heated by the pressing portion, and the protrusion can be easily formed on the second sheet.
- the composite sheet manufacturing apparatus includes (d) a third roll that has a cylindrical third outer peripheral surface facing the first outer peripheral surface, and rotates while synchronizing with the first roll. And (e) a second heating unit that heats either one or both of the first roll and the third roll.
- the first and second sheets are sandwiched between the first roll and the third roll and heated, while being between the first roll and the third roll. By passing through, the boundary portion of the first sheet and the second sheet can be joined to each other.
- the boundary portion of the first sheet and the second sheet can be joined before or after pressing the pressing portion into the second sheet.
- the composite sheet manufacturing apparatus (f) rotates in synchronization with the rotation of the first roll, and has a cylindrical fourth outer peripheral surface facing the first outer peripheral surface, and the fourth And a fourth roll that protrudes radially outward from the outer peripheral surface and has a convex portion that is inserted into the concave portion of the first roll.
- the first sheet in an unprocessed state before the curved portion and the boundary portion are formed is placed along the first outer peripheral surface so as to cover the concave portion of the first roll, and the first sheet
- the convex portion of the fourth roll moves the first sheet to the first roll.
- the curved portion and the boundary portion are formed in the first sheet by being pushed and deformed into the concave portion.
- the curved portion, the boundary portion, and the concave portion can be formed by using the unprocessed first sheet.
- the present invention provides a method for manufacturing a composite sheet configured as follows.
- the composite sheet manufacturing method includes: (i) an outer peripheral surface of a first roll having the curved portion of the first sheet having a curved portion in which one surface is raised and the other surface is recessed and a boundary portion adjacent to the curved portion. In a recess that recedes inward in the radial direction, the boundary portion extends along the outer peripheral surface of the first roll, and the second sheet is overlaid on the first sheet to cover the curved portion.
- the pressing portion that protrudes, the concave portion of the first roll By inserting in a state where there is play, the pressing portion of the second roll pushes and deforms the second sheet into the concave portion, and the flat portion of the second sheet faces the curved portion.
- the pressing portion of the second roll is in a heated state.
- the second sheet can be deformed while being heated by the pressing portion, and the protrusion can be easily formed on the second sheet.
- the first and second sheets conveyed in the first step are passed between the first roll and the third roll, and the first step And the second sheet is sandwiched between the first roll and the third roll and heated to join the boundary portion of the first sheet and the second sheet.
- first and second sheets can be joined using the first roll.
- the first sheet in an unprocessed state before the curved portion and the boundary portion are formed, While passing along the first outer peripheral surface so as to cover the recess, the first roll and the fourth roll are passed through, and the fourth roll is synchronized with the first roll.
- the convex portion of the fourth roll is inserted into the concave portion of the first roll by inserting a convex portion protruding radially outward from the outer peripheral surface of the fourth roll into the concave portion of the first roll.
- a fourth step of forming the curved portion and the boundary portion in the first sheet by pressing and deforming the sheet into the concave portion.
- the curved portion and the boundary portion can be formed using the first sheet in an unprocessed state.
- the composite sheet can easily make the uneven shape difficult to be crushed while maintaining the softness of the touch when in contact with the skin.
- FIG. 1 is an image diagram of a composite sheet.
- Example 1 is a cross-sectional view of the main part of the composite sheet.
- Example 1 is a cross-sectional view of the main part of the composite sheet.
- FIG. 2 is a cross-sectional view of the main part of the composite sheet.
- FIG. 5 is an explanatory view of a composite sheet manufacturing apparatus.
- Example 2 is a sectional view of an essential part of the composite sheet manufacturing apparatus.
- FIG. 7 is a sectional view of an essential part of the composite sheet manufacturing apparatus.
- FIG. 8 is a development of a main part of the outer peripheral surface of the first roll.
- FIG. 9 is a cross-sectional view of the main part of the composite sheet.
- FIG. 10 is an explanatory diagram of a composite sheet manufacturing apparatus.
- Conventional example 1 is an explanatory diagram of a composite sheet manufacturing apparatus.
- Conventional example 1 is an explanatory diagram of a composite sheet manufacturing apparatus.
- Conventional example 1 is
- Example 1 The composite sheet 50 of Example 1 will be described with reference to FIGS.
- FIG. 1 is an image diagram of the composite sheet 50.
- FIG. 2 is a cross-sectional view of the main part of the composite sheet 50.
- the composite sheet 50 has a first sheet 52 and a second sheet 54 joined together.
- An appropriate material may be selected for the first and second sheets 52 and 54.
- the materials of the first and second sheets 52 and 54 may be the same or different.
- the composite sheet 50 can be used for the surface sheet which touches the skin of absorbent articles, such as a sanitary napkin, an incontinence pad, a disposable diaper, for example.
- the first sheet 52 has a curved portion 53 in which one surface 53 s is raised and the other surface 53 t is recessed, and a boundary portion 53 k adjacent to the curved portion 53.
- FIG. 1 illustrates the case where the curved portions 53 are arranged in a lattice shape, the curved portions may be arranged in other patterns such as a staggered shape or a honeycomb shape, or a plurality of types having different shapes and sizes.
- the curved portion may be arranged.
- the second sheet 54 is joined to the boundary portion 53k of the first sheet 52 so as to cover the curved portion 53 of the first sheet 52 and form a space 51 between the second sheet 54 and the curved portion 53.
- joint portions 58 for joining the boundary portion 53k of the first sheet 52 and the second sheet 54 are formed intermittently, for example, by thermal welding.
- a continuous joint portion along the boundary portion 53k of the first sheet 52 may be formed.
- the shape of the joint 58 is not limited to the illustrated circle, and an appropriate shape such as a rectangle, a cross, or a star shape can be selected.
- the second sheet 54 has a protruding portion 55 and a flat portion 56 in a region 54p facing the curved portion 53 of the first sheet 52.
- the protrusion 55 has an inner surface 55 s on the first sheet 52 side that rises so as to approach the curved portion 53, and an outer surface 55 t on the opposite side to the first sheet 52 is recessed.
- the flat portion 56 surrounds the protruding portion 55 and extends flat together with a region 54q of the second sheet 54 that faces the boundary portion 53k of the first sheet 52.
- the space 51 surrounds the protrusion 55.
- FIG. 3 and 4 are cross-sectional views of main parts of the composite sheets 50x and 50y showing modifications of the protrusions 55x and 55y.
- the tip 55a of the protrusion 55x may be in contact with the other surface 53t of the curved portion 53 of the first sheet.
- an opening 55k may be formed at the tip of the protrusion 55y.
- the composite sheets 50, 50x, 50y can be selected from the first sheet 52 by selecting the material of the first and second sheets 52, 54 and the size and shape of the curved portion 53 and the protruding portions 55, 55x, 55y.
- a space 51 surrounding the protrusions 55, 55x, and 55y is appropriately formed between the second sheet 54 and the raised surface 53s of the curved portion 53 of the first sheet 52 is in contact with the skin. It is easy to soften the feel of time. Further, when the bending portion 53 of the first sheet 52 is deformed, the bending portion 53 is supported by the protruding portions 55, 55 x, 55 y of the second sheet 54.
- the protrusions 55, 55x, 55y can be prevented from being crushed. Therefore, the composite sheets 50, 50x, and 50y can easily make the uneven shape difficult to be crushed while maintaining the softness of touch when in contact with the skin.
- the height of the other surface 53t of the curved portion 53 from the surface 56s on the first sheet 52 side of the flat portion 56 is H1
- the first sheet of the flat portion 56 of the second sheet 54 is.
- H2 it is preferable that H2 ⁇ 0.3 ⁇ H1.
- Example 2 Next, a composite sheet manufacturing apparatus 10 (hereinafter also simply referred to as “manufacturing apparatus 10”) and a manufacturing method of Example 2 will be described with reference to FIGS.
- the composite sheet 50 of Example 1 can be manufactured using the manufacturing apparatus 10 of Example 2.
- FIG. 5 is an explanatory diagram of the composite sheet manufacturing apparatus 10.
- FIG. 6 is a cross-sectional view of the main part taken along the line AA in FIG.
- FIG. 7 is a cross-sectional view of the main part taken along the line BB in FIG.
- the first shaping roll 30, the first sealing roll 16, the second shaping roll 40, and the second shaping roll are uniformly distributed around the first roll 12, that is, every 90 °.
- the seal roll 18 is arranged.
- the first and second shaping rolls 30 and 40 are arranged symmetrically with respect to the first roll 12, and the first and second seal rolls 16 and 18 are arranged symmetrically with respect to the first roll 12. .
- Each roll 12, 16, 18, 30, 40 is rotationally driven in synchronization with the directions of arrows 12r, 16r, 18r, 30r, 40r.
- Each of the rolls 12, 16, 18, 30, and 40 includes heaters 13, 17, 19, 38, and 48 that are schematically illustrated as heating units.
- the first and second sealing rolls 16 and 18 and the first and second shaping rolls 30 and 40 may not be evenly arranged around the first roll 12. .
- the second shaping roll 40 is the “second roll” of the present invention.
- the heater 48 incorporated in the second shaping roll 40 is the “first heating unit” of the present invention.
- the first and second seal rolls 16 and 18 are “third rolls” of the present invention.
- the heater 13 built in the first roll 12 and the heaters 17 and 19 built in the first and second seal rolls 16 and 18 are the “second heating section” of the present invention.
- the first shaping roll 30 is the “fourth roll” of the present invention.
- a second guide roll 15 for introducing the second sheet 54 onto one sheet 52 is arranged.
- the first sheet 52 introduced along the outer peripheral surface of the first roll 12 is conveyed along with the rotation of the first roll 12, and between the first roll 12 and the first shaping roll 30.
- the second sheet 54 is overlaid on the first sheet 52.
- the first and second sheets 52 and 54 are disposed between the first roll 12 and the first seal roll 16, between the first roll 12 and the second shaping roll 40, and between the first roll 12 and the first shaping roll 40. It passes between the roll 12 and the second seal roll 18 and becomes a composite sheet 50 and is carried out of the first roll 12.
- the first roll 12 includes a recess 12 b that retreats radially inward from the cylindrical outer peripheral surface 12 a of the first roll 12 and a suction flow that communicates with the bottom of the recess 12 b.
- Paths 12c and 12d and cylindrical seal projections 12x projecting radially outward from the outer peripheral surface 12a of the first roll 12 are formed.
- the outer peripheral surface 12a of the first roll 12 is the “first outer peripheral surface” of the present invention.
- FIG. 8 is a development view of the main part of the outer peripheral surface 12a of the first roll 12.
- FIG. 8 As shown by reference numeral 12z in FIG. 8, five seal projections 12x are provided as a set in the axial direction (vertical direction in FIG. 8) of the first roll 12 at regular intervals.
- the rows 12u to 12w in which the set 12z of seal projections 12x are arranged in the axial direction are adjacent to each other in the circumferential direction (left and right in FIG. 8) of the first roll 12 with a substantially half-pitch deviation.
- a concave portion (not shown in FIG.
- first roll 12 formed in a substantially rhombic region 12k surrounded by twelve seal protrusions 12x arranged in a substantially rhombus, and the position of the center of the concave portion is , Which coincide with the midpoints 13a to 13c between the sets 12z of the axially adjacent seal projections 12x.
- the first shaping roll 30 protrudes radially outward from the cylindrical outer peripheral surface 30 a of the first shaping roll 30 corresponding to the recess 12 b of the first roll 12.
- a truncated pyramid-shaped convex portion 32 having a flat tip 34 is formed.
- the shape of the convex portion 32 of the first shaping roll 30 may be, for example, a rectangular parallelepiped shape or a cylindrical shape other than the truncated pyramid shape.
- the outer peripheral surface 30a of the first shaping roll 30 is the “fourth outer peripheral surface” of the present invention.
- the convex portion 32 of the first shaping roll 30 is formed on the first roll 12 in the first sheet (not shown in FIG. 7) arranged along the outer peripheral surface 12 a of the first roll 12.
- the portion covering the recess 12b is heated and pressed into the recess 12b of the first roll 12 to form a curved portion in the first sheet.
- the first sheet 52 includes a resin material so that the curved portion can be formed while being heated, and the heating temperature is lower than the melting point of the resin material of the first sheet 52.
- the concave portion 12b of the first roll 12 is connected to a negative pressure source via suction channels 12c and 12d.
- a negative pressure source via suction channels 12c and 12d.
- the second shaping roll 40 has a conical pressing portion 42 that protrudes radially outward from the cylindrical outer peripheral surface 40 a corresponding to the concave portion 12 b of the first roll 12. Is formed.
- the outer peripheral surface 40a of the second shaping roll 40 is the “second outer peripheral surface” of the present invention.
- the tip 44 of the pressing part 42 may be sharp or round.
- the pressing portion 42 of the second shaping roll 40 has the first and second sheets (not shown in FIG. 6) arranged along the outer peripheral surface 12a of the first roll 12 as the first.
- the central portion of the region of the second sheet that faces the curved portion of the first sheet is placed on the curved portion side of the first sheet.
- the second sheet is deformed to form a protrusion.
- the second sheet 54 is preferably made of a resin material so that the protrusions can be formed while being heated, and the heating temperature is preferably lower than the melting point of the resin material of the second sheet 54.
- a protrusion 55 can be formed at the center of the region of the first sheet 52 that faces the curved portion 53, and the periphery of the protrusion 55 can be surrounded by the flat portion 56.
- the first and second seal rolls 16, 18 are composed of first and second sheets 52, 54 arranged along the outer peripheral surface of the first roll 12. 12 and the first and second seal rolls 16, 18, the cylindrical outer peripheral surfaces of the first and second seal rolls 16, 18 and the seal protrusions 12 x of the first roll 12 ( 6 and 7), the first and second sheets 52 and 54 are sandwiched and heated, and the first and second sheets 52 and 54 are thermally welded to form the first and second sheets. A joining portion 58 (see FIGS. 1 to 4) for joining the sheets 52 and 54 is formed.
- the outer peripheral surfaces of the first and second seal rolls 16 and 18 are the “third outer peripheral surface” of the present invention.
- first and second sheets 52 and 54 By repeating the thermal welding of the first and second sheets 52 and 54 using the first and second seal rolls 16 and 18, a hole is opened in the joint 58 of the first and second sheets 52 and 54.
- the first and second sheets 52 and 54 can be surely joined to each other while avoiding the problem.
- the 1st shaping roll 30 can be abbreviate
- the first and second shaping rolls 30 and 40 are heated by a heating unit such as a heater provided outside the first and second shaping rolls 30 and 40. You may comprise so that the convex part 32 of the shaping roll 30 and the press part 42 of the 2nd shaping roll 40 may be heated.
- seal protrusion 12x on the first roll 12
- seal protrusions on the outer peripheral surfaces of the first and second seal rolls 16 and 18, It is also possible to form seal protrusions on both the first and second seal rolls 16 and 18.
- the curved portion of the first sheet 52 is accommodated in the recess 12b of the first roll 12, and the boundary portion of the first sheet 52 is set along the outer peripheral surface 12a of the first roll 12, and the first In a state where the second sheet 54 containing the resin material is overlapped on the first sheet 52 and the curved portion of the first sheet 52 is covered, the first roll 12 is rotated, and the first and second sheets 52, 54 is conveyed.
- the first sheet 52 guided by the first guide roll 14 is disposed along the outer peripheral surface 12a of the first roll 12, and the first roll 12 and the first roll
- the first shaping roll 30 is rotated while being synchronized with the first roll 12, and the convex portion 32 of the first shaping roll 30 is moved to the first roll. 12 are inserted into the recesses 12b.
- the heated convex portion 32 of the first shaping roll 30 is pushed into the portion covering the concave portion 12 b of the first roll 12, thereby deforming the first sheet 52.
- a curved portion is formed in the sheet 52.
- a portion of the first sheet 52 along the outer peripheral surface 12a of the first roll 12 around the curved portion becomes a boundary portion.
- the first sheet 52 is conveyed in a state where the curved portion is accommodated in the concave portion 12 b of the first roll 12.
- the second sheet 54 guided by the second guide roll 15 is overlaid on the first sheet 52 so as to cover the curved portion of the first sheet 52, and the first roll 12 is rotated. Then, the first and second sheets 52 and 54 are conveyed.
- first and second sheets 52 and 54 are passed between the first roll 12 and the first seal roll 16, and the first and second sheets 52 and 54 are moved to the first roll 12.
- the boundary portion of the first sheet 52 and the second sheet 54 are joined by sandwiching and heating the seal protrusion 12x of the first roll 12 and the outer peripheral surface of the first seal roll 16.
- the heated pressing portion 42 of the second shaping roll 40 presses the second sheet 54 into the recess 12b while heating the second sheet 54, deforms the second sheet 54, and the second sheet 54 out of the second sheet 54
- a projection in which the inner surface on the first sheet 52 side rises in the center of the region facing the curved portion of the first sheet 52 so that the outer surface on the side opposite to the first sheet 52 rises so as to approach the curved portion Part is formed. Since the protrusion is formed only in the central portion of the region facing the curved portion of the first sheet 52, the protrusion is surrounded by the flat portion of the second sheet 54.
- first and second sheets 52, 54 are passed between the first roll 12 and the second seal roll 18, and the first and second sheets 52, 54 are moved to the first roll 12.
- the boundary portion of the first sheet 52 and the second sheet 54 are further joined by sandwiching and heating between the seal protrusion 12x of the second roll 12 and the outer peripheral surface of the second seal roll 18.
- the composite sheet 50 can be manufactured through the above steps.
- step (1-2) is the “first step” of the present invention.
- steps (2) and (4) are the “third step” of the present invention.
- the step (3) is the “second step” in the present invention.
- the step (1-1) is the “fourth step” of the present invention.
- seats 52 and 54 can be joined using the 1st roll 12 by the process of said (2) and (4). Only one of the steps (2) and (4) may be used. In this case, one of the first and second seal rolls 16 and 18 can be omitted.
- a second apparatus is used.
- the boundary portion of the first sheet 52 and the second sheet 54 may be joined.
- the first and second sheets 52 and 54 are sandwiched and heated between the outer peripheral surface 12a of the first roll 12 and the outer peripheral surface 40a of the second shaping roll 40. You may join the boundary part of the 1st sheet
- the “third step” of the present invention is performed simultaneously with the “second step” of the present invention, and the first and second seal rolls 16 and 18 can be omitted.
- the boundary portion of the first sheet on which the curved portion is formed in advance is aligned with the outer peripheral surface 12a of the first roll 12, and the first In the state where the curved portion of one sheet is accommodated in the recess 12b of the first roll 12, the second sheet is stacked on the first sheet, and the curved portion is covered with the second sheet, the first roll 12
- the first and second sheets may be conveyed while synchronizing with the rotation of the first and second sheets. In this case, it is also possible to use a first sheet that does not contain a resin material.
- the shape and size of the concave portion 12 b of the first roll 12, the convex portion 32 of the first shaping roll 30, the pressing portion 42 of the second shaping roll 40, and the rolls 12, 16, 18, 30, 40 Manufacturing by appropriately selecting the number of rotations (conveying speed of the first and second sheets 52 and 54), the temperature of the convex portion 32 and the pressing portion 42, the material of the first and second sheets 52 and 54, etc.
- a composite sheet in which the uneven shape is not easily crushed while maintaining the softness of touch when touching the skin can be produced.
- the composite sheet 50 described above can easily make the uneven shape difficult to be crushed while maintaining the softness of the touch when in contact with the skin.
- the composite sheet of the present invention can be used for a surface sheet in contact with the skin other than the absorbent article, and can also be used for a surface sheet in contact with the skin.
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Abstract
Description
12 第1のロール
12a 外周面(第1の外周面)
12b 凹部
13 ヒータ(第2の加熱部)
16 第1のシールロール(第3のロール)
17 ヒータ(第2の加熱部)
18 第2のシールロール(第3のロール)
19 ヒータ(第2の加熱部)
30 第1の賦形ロール(第4のロール)
30a 外周面(第4の外周面)
40 第2の賦形ロール(第2のロール)
40a 外周面(第2の外周面)
42 押圧部
48 ヒータ(第1の加熱部)
50,50x,50y 複合シート
51 空間
52 第1のシート
53 湾曲部
53k 境界部
53s 一方の面
53t 他方の面
54 第2のシート
54p 湾曲部に対向する領域
55,55x,55y 突起部
55s 内側面
55t 外側面
56 平坦部
56s 第1のシート側の面
Claims (10)
- 一方の面が盛り上がり他方の面がくぼんだ湾曲部と、前記湾曲部に隣接する境界部と有する第1のシートと、
前記第1のシートの前記湾曲部を覆い前記湾曲部との間に空間を形成するように、前記第1のシートの前記境界部に接合され、前記湾曲部に対向する領域に、前記湾曲部に接近するように、前記第1のシート側の内側面が盛り上がり前記第1のシートとは反対側の外側面がくぼんだ突起部と、前記突起部を取り囲む平坦部とを有する第2のシートと、
を備えたことを特徴とする複合シート。 - 前記平坦部の前記第1のシート側の面からの前記突起部の高さは、
前記平坦部の前記第1のシート側の前記面からの前記湾曲部の前記他方の面の高さの30%以上であることを特徴とする、請求項1に記載の複合シート。 - 円筒状の第1の外周面と、前記第1の外周面から径方向内側に後退する凹部とを有し、回転する第1のロールと、
前記第1のロールの回転と同期しながら回転し、前記第1の外周面に対向する円筒状の第2の外周面と、前記第2の外周面から径方向外側に突出し前記第1のロールの前記凹部に遊びのある状態で挿入される押圧部とを有する第2のロールと、
を備え、
一方の面が盛り上がり他方の面がくぼんだ湾曲部と前記湾曲部に隣接する境界部と有する第1のシートの前記湾曲部を前記第1のロールの前記凹部に収容し、前記境界部を前記第1のロールの前記第1の外周面に沿わせるとともに、前記第1のシートに第2のシートを重ねて前記湾曲部を覆う状態で、
前記第1のロールの回転に伴って、前記第1及び第2のシートが前記第1のロールと前記第2のロールとの間を通過するとき、前記第2のロールの前記押圧部が、前記第2のシートを前記凹部に押し込み変形させ、
前記第2のシートのうち前記湾曲部に対向する領域に、平坦部に取り囲まれ、前記湾曲部に接近するように前記第1のシート側の内側面が盛り上がり、前記第1のシートとは反対側の外側面がくぼんだ突起部を形成することができることを特徴とする、複合シートの製造装置。 - 前記押圧部を加熱する第1の加熱部を、さらに備えたことを特徴とする、請求項3に記載の複合シートの製造装置。
- 前記第1の外周面に対向する円筒状の第3の外周面を有し、前記第1のロールと同期しながら回転する第3のロールと、
前記第1のロールと前記第3のロールとのいずれか一方又は両方を加熱する第2の加熱部と、
をさらに備え、
前記第1及び第2のシートが、前記第1のロールと前記第3のロールとに挟まれ加熱されながら、前記第1のロールと前記第3のロールとの間を通過することによって、前記第1のシートの前記境界部と前記第2のシートとを互いに接合することができることを特徴とする、請求項3又は4に記載の複合シートの製造装置。 - 前記第1のロールの回転と同期しながら回転し、前記第1の外周面に対向する円筒状の第4の外周面と、前記第4の外周面から径方向外側に突出し前記第1のロールの前記凹部に挿入される凸部とを有する第4のロールを、さらに備え、
前記湾曲部と前記境界部が形成される前の未加工状態の前記第1のシートを、前記第1のロールの前記凹部を覆うように前記第1の外周面に沿わせ、前記第1のシートが、前記第1のロールの回転に伴って前記第1のロールと前記第4のロールとの間を通過するとき、前記第4のロールの前記凸部が、前記第1のシートを前記凹部に押し込み変形させて、前記第1のシートに前記湾曲部と前記境界部を形成することを特徴とする、請求項3乃至5のいずれか一つに記載の複合シートの製造装置。 - 一方の面が盛り上がり他方の面がくぼんだ湾曲部と前記湾曲部に隣接する境界部と有する第1のシートの前記湾曲部を第1のロールの外周面から径方向内側に後退する凹部に収容し、前記境界部を前記第1のロールの前記外周面に沿わせるとともに、前記第1のシートに第2のシートを重ねて前記湾曲部を覆う状態で、前記第1のロールを回転させて、前記第1及び第2のシートを搬送する第1の工程と、
前記第1の工程によって搬送されている前記第1及び第2のシートを、前記第1のロールと第2のロールとの間を通過させるとともに、前記第2のロールを前記第1のロールと同期しながら回転させ、前記第2のロールの外周面から径方向外側に突出する押圧部を、前記第1のロールの前記凹部に遊びのある状態で挿入することによって、前記第2のロールの前記押圧部が前記第2のシートを前記凹部に押し込み変形させ、
前記第2のシートのうち前記湾曲部に対向する領域に、平坦部に取り囲まれ、前記湾曲部に接近するように前記第1のシート側の内側面が盛り上がり、前記第1のシートとは反対側の外側面がくぼんだ突起部を形成する第2の工程と、
前記第2の工程の前、前記第2の工程の後、及び前記第2の工程と同時のうち、少なくともいずれかにおいて、前記第1のシートの前記境界部と前記第2のシートとを接合する第3の工程と、
を備えたことを特徴とする、複合シートの製造方法。 - 前記第2の工程において、前記第2のロールの前記押圧部は、加熱された状態であることを特徴とする、請求項7に記載の複合シートの製造方法。
- 前記第3の工程において、
前記第1の工程によって搬送されている前記第1及び第2のシートを、前記第1のロールと第3のロールとの間を通過させ、前記第1及び第2のシートを、前記第1のロールと前記第3のロールとで挟み加熱することによって、前記第1のシートの前記境界部と前記第2のシートとを接合することを特徴とする、請求項7又は8に記載の複合シートの製造方法。 - 前記第1の工程の前に、前記湾曲部と前記境界部が形成される前の未加工状態の前記第1のシートを、前記第1のロールの前記凹部を覆うように前記第1の外周面に沿わせた状態で、前記第1のロールと第4のロールとの間を通過させるとともに、前記第4のロールを前記第1のロールと同期しながら回転させ、前記第4のロールの外周面から径方向外側に突出する凸部を、前記第1のロールの前記凹部に挿入することによって、前記第4のロールの前記凸部が前記第1のシートを前記凹部に押し込み変形させて、前記第1のシートに前記湾曲部と前記境界部を形成する第4の工程を、さらに備えたことを特徴とする、請求項7乃至9のいずれか一つに記載の複合シートの製造方法。
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MYPI2017704660A MY182647A (en) | 2015-06-08 | 2016-05-16 | Composite sheet, and device and method for manufacturing composite sheet |
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US (2) | US11596560B2 (ja) |
EP (1) | EP3305260B1 (ja) |
JP (2) | JP6472516B2 (ja) |
CN (1) | CN107735061B (ja) |
BR (1) | BR112017025279B1 (ja) |
MY (1) | MY182647A (ja) |
WO (1) | WO2016199543A1 (ja) |
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CN107616874A (zh) * | 2017-09-07 | 2018-01-23 | 安徽舒源妇幼用品有限公司 | 一种干爽型尿不湿 |
WO2018163879A1 (ja) | 2017-03-07 | 2018-09-13 | 株式会社瑞光 | 賦形シートおよびその製造方法 |
WO2019069751A1 (ja) | 2017-10-06 | 2019-04-11 | 株式会社瑞光 | 複合シートの製造装置及び製造方法 |
WO2020085460A1 (ja) | 2018-10-24 | 2020-04-30 | 株式会社瑞光 | 賦形シートの製造方法 |
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GB201613051D0 (en) * | 2016-07-28 | 2016-09-14 | Landa Labs (2012) Ltd | Applying an electrical conductor to a substrate |
CN114654818B (zh) * | 2022-01-18 | 2023-12-05 | 江苏锦琪昶新材料有限公司 | 一种纤维材料、制备方法、装置以及卫生用品 |
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WO2018163879A1 (ja) | 2017-03-07 | 2018-09-13 | 株式会社瑞光 | 賦形シートおよびその製造方法 |
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KR20190118584A (ko) | 2017-03-07 | 2019-10-18 | 가부시키가이샤 즈이코 | 부형 시트 및 그 제조 방법 |
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JPWO2019069751A1 (ja) * | 2017-10-06 | 2020-11-26 | 株式会社瑞光 | 複合シートの製造装置及び製造方法 |
CN111201123A (zh) * | 2017-10-06 | 2020-05-26 | 株式会社瑞光 | 复合片材制造装置和制造方法 |
WO2019069751A1 (ja) | 2017-10-06 | 2019-04-11 | 株式会社瑞光 | 複合シートの製造装置及び製造方法 |
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JP7236457B2 (ja) | 2018-10-24 | 2023-03-09 | 株式会社瑞光 | 賦形シートの製造方法 |
Also Published As
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US20180140478A1 (en) | 2018-05-24 |
US20200237578A1 (en) | 2020-07-30 |
US11497660B2 (en) | 2022-11-15 |
JPWO2016199543A1 (ja) | 2018-03-01 |
EP3305260A1 (en) | 2018-04-11 |
MY182647A (en) | 2021-01-27 |
JP6660456B2 (ja) | 2020-03-11 |
EP3305260B1 (en) | 2020-10-14 |
EP3305260A4 (en) | 2018-12-19 |
CN107735061A (zh) | 2018-02-23 |
BR112017025279A2 (ja) | 2018-08-07 |
BR112017025279B1 (pt) | 2022-06-28 |
CN107735061B (zh) | 2021-04-30 |
JP2019063581A (ja) | 2019-04-25 |
JP6472516B2 (ja) | 2019-02-20 |
US11596560B2 (en) | 2023-03-07 |
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