[Technical Field]
[0001] The present invention relates to a method and an apparatus for manufacturing wet
wipes.
[Background Art]
[0002] As a method for manufacturing wet wipes formed of a laminated body of sheets impregnated
with a predetermined chemical, there are known methods disclosed in Patent Literatures
1 and 2.
[0003] A method disclosed in Patent Literature 1 has: a step of impregnating an original
fabric with part of a predetermined chemical during conveyance of the original fabric
before lamination; a step of squeezing out an excess of the predetermined chemical
impregnated in the original fabric during conveyance of the original fabric; a step
of laminating a plurality of original fabrics during conveyance of the original fabrics;
and a step of impregnating the original fabrics with the rest of the predetermined
chemical during conveyance of the original fabrics after lamination.
[0004] Further, a method disclosed in Patent Literature 2 has: a step of impregnating an
original fabric with a predetermined chemical during conveyance of the original fabric
before lamination; a step of laminating the original fabric while folding it back
during conveyance of the original fabric; a step of conveying the original fabric
after lamination while compressing it in a thickness direction and thereafter cutting
the original fabric; and the like.
[0005] The wet wipes manufactured by the methods disclosed in Patent Literatures 1 and 2
have a configuration of a so-called pop-up type that when one sheet is taken out of
a container, the next one is also pulled out together and protruded from an outlet
of the container.
[Citation List]
[Patent Literature]
[0006]
Patent Literature 1: Japanese Patent Publication No. H7-204118
Patent Literature 2: Japanese Patent Publication No. 2007-144053
[Summary of Invention]
[0007] However, the pop-up type wet wipes described above have a problem that if an impregnation
rate of a predetermined chemical to an original fabric is increased, the original
fabrics are interconnected by means of a water screen of the predetermined chemical,
which makes it difficult to take sheets out of the container one by one, so that the
impregnation rate of the predetermined chemical to the original fabric has to be kept
relatively low.
[0008] Furthermore, the method disclosed in Patent Literature 1 has a problem that the impregnation
step of a predetermined chemical requires two stages to be taken before and after
lamination of the original fabric, thereby increasing the size of apparatus, and since
the original fabric after lamination is impregnated with the predetermined chemical,
the impregnation amount of the predetermined chemical has variability between the
surface part and the center part of the laminated body of sheets.
[0009] Furthermore, the method disclosed in Patent Literature 2 has a problem that the predetermined
chemical is squeezed out of the original fabric because the original fabric is folded
back and compressed after impregnation with the predetermined chemical, thereby leading
to a possibility that a product containing a desired amount of the predetermined chemical
cannot be manufactured.
[0010] Thus, the present invention has been achieved in view of the aforementioned problem,
and an object thereof is to provide a method and an apparatus for manufacturing wet
wipes, by which such wet wipes can be manufactured, that are capable of preventing
variability in an impregnation amount of a predetermined chemical and reduction in
the easiness of taking sheets out, which is caused by increasing an impregnation rate
of the predetermined chemical.
[0011] A fist feature of the present invention is summarized as a method for manufacturing
wet wipes formed of a laminated body of sheets impregnated with a predetermined chemical,
the method comprising: a step of cutting an original fabric of a plurality of sheets
at a predetermined interval in a cross direction perpendicular to a conveyance direction,
the plurality of sheets being continuously conveyed by a conveyance device in a laminated
state while being impregnated with the predetermined chemical and folded back; and
a step of conveying the laminated body of the cut-out sheets while pressing both ends
in the conveyance direction of the laminated body from a side not in contact with
the conveyance device.
[0012] Moreover, the feature of the present invention is summarized as a manufacturing device
that manufactures wet wipes formed of a laminated body of sheets impregnated with
a predetermined chemical, the manufacturing device comprising: a cutting unit that
cuts a plurality of sheets at a predetermined interval in a cross direction perpendicular
to a conveyance direction, the plurality of sheets being continuously conveyed by
a conveyance device in a laminated state while being impregnated with the predetermined
chemical and folded back; and the conveyance device that conveys the laminated body
of the cut-out sheets while pressing both ends in the conveyance direction of the
laminated body by means of a pressing portion, from a side not in contact with the
conveyance device.
[Brief Description of Drawings]
[0013]
[Fig. 1] Fig. 1 is a perspective view of a package body of wet wipes manufactured
by a manufacturing apparatus according to a first embodiment of the present invention.
[Fig. 2] Fig. 2 is a view for showing a state in which the wet wipes manufactured
by the manufacturing apparatus according to the first embodiment of the present invention
are contained inside the package body.
[Fig. 3] Fig. 3 is a view for showing a state in which the wet wipes manufactured
by the manufacturing apparatus according to the first embodiment of the present invention
are contained inside the package body.
[Fig. 4] Fig. 4 is a schematic view of the manufacturing apparatus according to the
first embodiment of the present invention.
[Fig. 5] Fig. 5 is a view for illustrating devices used in a laminating step and a
pressing step of the manufacturing apparatus according to the first embodiment of
the present invention.
[Fig. 6] Fig. 6 is a view for illustrating a configuration of a pressing device according
to the first embodiment of the present invention.
[Fig. 7] Fig. 7(a) shows results of a taking-out test for a package body to which
a pressing step was not performed by the pressing device; Fig. 7(b) shows results
of a taking-out test for a package body in which the entire surface of a laminated
body was pressed; and Fig. 7(c) shows results of a taking-out test for a package body
to which the pressing step was performed by the pressing device according to the embodiment.
[Description of Embodiments]
(First Embodiment of Present Invention)
[0014] With reference to Figs. 1 to 3, wet wipes manufactured by a manufacturing apparatus
10 according to a first embodiment of the present invention are explained. Such wet
wipes are formed of a laminated body of sheets 710, 720 impregnated with a predetermined
chemical.
[0015] As shown in Fig. 1, a package body 100 of the wet wipes has: a package main body
20 having an opening portion 21; a label member 22 attached to the exterior face of
the package main body 20 to cover the opening portion 21; and a laminated body of
the sheets 710, 720 contained inside the package main body 20.
[0016] Each of the sheets 710, 720 is contained inside the package main body 20 in a state
where these sheets are folded back as shown in Figs. 2 and 3.
[0017] As shown in Figs. 2 and 3, the sheet 720 has regions 31A, 32A, 33A, 34A, 35A, whereas
the sheet 710 has regions 31B, 32B, 33B, 34B, 35B.
[0018] Herein, in the sheet 720, the regions 31A, 32A are folded back along a folding line
1A; the regions 32A, 33A are folded back along a folding line 2A; the regions 33A,
34A are folded back along a folding line 3A; and the regions 34A, 35A are folded back
along a folding line 4A.
[0019] Similarly, in the sheet 710, the regions 31B, 32B are folded back along a folding
line 1B; the regions 32A, 33A are folded back along a folding line 2B; the regions
33A, 34A are folded back along a folding line 3B; and the regions 34A, 35A are folded
back along a folding line 4B.
[0020] Note that in the sheet 720, the folding lines 1A, 2A are provided between the folding
lines 3A, 4A in a widthwise direction W, whereas in the sheet 710, the folding lines
1B, 2B are provided between the folding lines 3B, 4B in the widthwise direction W.
[0021] That is, in the sheet 720, a region between the folding lines 1A, 2A in the widthwise
direction W has a four-layered structure formed by folding back the regions 31A, 32A,
33A, 34A, whereas the other region has a two-layered structure formed by folding back
the regions 33A, 34A.
[0022] Therefore, the regions 31A, 32A rise in a lamination direction S of the laminated
body while extending in one direction L of the laminated body.
[0023] That is, the regions 31A, 32A are folded back along the folding lines 1A, 2A to thereby
configure a rising region PA which is formed in the laminated body so as to rise in
the lamination direction S while extending in the one direction L.
[0024] Similarly, in the sheet 710, a region between the folding lines 1B, B in the widthwise
direction W has a four-layered structure formed by folding back the regions 31B, 32B,
33B, 34B, whereas the other region has a two-layered structure formed by folding back
the regions 33B, 34B.
[0025] Therefore, the regions 31B, 32B rise in a lamination direction S of the laminated
body while extending in the one direction L of the laminated body.
[0026] That is, the regions 31B, 32B are folded back along the folding lines 1B, 2B to thereby
configure a rising region PB which is formed in the laminated body so as to rise in
the lamination direction S while extending in the longitudinal direction L.
[0027] Furthermore, one region (that is, the rising region PA) between the folding lines
1B, B in the widthwise direction W is arranged so as not to be overlapped with the
other region (that is, the rising region PB) between the folding lines 1B, B in the
direction W.
[0028] Furthermore, in the rising regions PA, PB, the sheets 710, 720 adjacent to each other
in the lamination direction S are laminated in close contact with each other with
a predetermined chemical intervened therebetween.
[0029] Herein, in regions RA, RB, RC adjacent to the rising regions PA, PB, since a gap
is formed between the sheets 710, 720 adjacent to each other in the lamination direction
S, these sheets are not laminated in close contact with each other with the predetermined
chemical intervened therebetween.
[0030] Note that the wet wipes manufactured with the manufacturing apparatus 10 according
to the first embodiment of the present invention are not configured as the aforementioned
pop-up type. Therefore, even in a case where the sheet 720 is taken out through the
opening portion 21 of the package main body 20, the sheet 710 is not pulled up together
to be protruded from the opening portion 21.
[0031] That is, after taking out the sheet 720 through the opening portion 21 of the package
main body 20 by grabbing and pulling up the regions 31A, 32A (that is, the rising
region PA of the sheet 720), a user can take out the sheet 710 by grabbing and pulling
up the regions 31B, 32B (that is, the rising region PB of the sheet 70).
[0032] Hereinafter, with reference to Fig. 4, a method for manufacturing wet wipes according
to the present embodiment is briefly explained.
[0033] As shown in Fig. 4, in step S101, the folding unit 5 folds respective sheets 71,
72 having been sent out from a wound state in a roller shape, into a predetermined
shape (specifically, a shape shown in Figs. 2 and 3) on a side not in contact with
a conveyance device.
[0034] For example, the sheets 71, 72 have a basis weight of 25 g/m
2 to 100 g/m
2, and are made of: fibers made of a hydrophilic fiber such as rayon, cotton, or pulp,
and a simple substance such as PET, PP, PE, or acrylic; or hydrophobic composite fibers
having a sheath-core structure or a side-by-side structure.
[0035] Furthermore, the sheets 71, 72 are a nonwoven fabric shaped in a sheet-like form
by a spun lace method, an air-laid method, a direct spinning method, or the like,
and these sheets are required to include a hydrophilic fiber in terms of permeability
of the predetermined chemical at the time of impregnation of the predetermined chemical.
[0036] In step S102, an impregnating unit 1 impregnates each of the folded sheets 71, 72
with a predetermined amount of predetermined chemical from a side in contact with
the conveyance device (a side of a conveyance roller 2).
[0037] In step S103, each of the sheets 71, 72 impregnated with the predetermined chemical
is conveyed in contact with the surface of the conveyance roller 2.
[0038] In step S104, a conveyer 3 laminates each of the sheets 71, 72 impregnated with the
predetermined chemical.
[0039] Specifically, with the conveyer 3, the sheet 72 with its surface impregnated with
the predetermined chemical being faced to the side in contact with the conveyance
device is laminated from the side not in contact with the conveyance device, on the
sheet 71 with its surface impregnated with the predetermined chemical being faced
to the side in contact with the conveyance device.
[0040] In step S105, a cutting unit 4 cuts the sheets 71, 72 conveyed by the conveyer 3,
into the sheets 710, 720 with a predetermined size.
[0041] Thereafter, after a laminated body 800 formed by laminating a predetermined number
of the cut-out sheets 710, 720 is obtained in laminating step S106, the laminated
body 800 is conveyed in pressing step S107 while both outer end portions in the widthwise
direction of the laminated body 800 formed of the cut-out sheets 710, 720 are pressed
from a side not in contact with the conveyer 14. In packaging step S108, the laminated
body 800 is packaged in the package main body 20.
[0042] Hereinafter, with reference to Figs. 4 to 6, each function of the manufacturing apparatus
10 according to the present embodiment is explained.
[0043] As shown in Fig. 4, the manufacturing apparatus 10 has: the folding unit 5; the
impregnating unit 1; the conveyance roller 2; conveyors 3, 9, 11, 12; the cutting
unit 4; the pusher 13; and a pressing device 15. Herein, in the manufacturing apparatus
10, the conveyance roller 2 and the conveyors 3, 9 make up a conveyance device configured
to continuously convey the plurality of sheets 71, 72. Furthermore, the conveyers
11, 12, 14 make up a conveyance device configured to continuously convey the laminated
body 800.
[0044] The folding unit 5 is configured to fold back each of the sheets 71, 72 on a side
not in contact with the conveyance device. Specifically, the folding unit 5 is configured
to fold back each of the sheets 71, 72 so that the sheets 71, 72 are formed in a shape
shown in Figs. 2 and 3.
[0045] Specifically, the folding unit 5 is configured so that: the regions 31A, 32A, 33A
(or 31B, 32B, 33B) including one side edge of the sheet 72 (or 71) are folded back
on a side not in contact with the conveyance device, along the folding line 3A (or
3B) in a conveyance direction MD; thereafter the regions 31A, 32A (or 31B, 32B) including
one side edge of the sheet 72 (or 71) are folded back on the side not in contact with
the conveyance device, along the folding line 2A (or 2B) in the conveyance direction
MD; and thereafter, the region 31A (or 31B) including one side edge of the sheet 72
(or 71) is folded back on the side not in contact with the conveyance device, along
the folding line 1A (or 1B) in the conveyance direction MD.
[0046] Furthermore, the folding unit 5 is configured so that the region 35A (or 35B) including
the other side edge of the sheet 72 (or 71) is folded back on a side in contact with
the conveyance device, along the folding line 4A (or 4B) in the conveyance direction
MD.
[0047] The impregnating unit 1 is configured to impregnate each of the folded sheets 71,
72 with the predetermined chemical, from the side in contact with the conveyance device.
[0048] For example, the impregnating unit 1 may be configured to push out the predetermined
chemical by a predetermined amount from a chemical tank by using a proportioning pump.
As a result, the predetermined amount of predetermined chemical is discharged from
a pore provided in the impregnating unit 1 and comes in contact with the sheets 71,
72, so that each of the sheets 71, 72 is impregnated with the predetermined amount
of predetermined chemical.
[0049] Furthermore, the impregnating unit 1 may be configured to impregnate the sheets 71,
72 with the predetermined chemical having weight of 3.5 (between 3 and 4) times heavier
than the sheets 71, 72, for example.
[0050] Note that a weight rate (that is, an impregnation rate) of the predetermined chemical
to be impregnated, with respect to the sheets 71, 72 is appropriately adjustable by
the impregnating unit 1.
[0051] Herein, an impregnation rate required for the sheets 71, 72 to adhere to the surface
of the conveyance roller 2 and for the sheet 72 to adhere to the top of the sheet
71 is 1.5 times or more in a case of using as the sheets 71, 72, a spun lace nonwoven
fabric of 38 g/m
2 having a rayon fiber as a main constituent, for example.
[0052] Furthermore, as a method for applying a predetermined chemical, the impregnating
unit 1 may adopt a method for attaching a predetermined chemical in a droplet form
or in a mist form to the sheets 71, 72. However, the above-described method is preferable
in consideration of impregnation efficiency and process pollution of chemical at the
time when surfaces of the sheets 71, 72, which are impregnated with the predetermined
chemical, are brought in contact with the surface of the conveyance roller 2.
[0053] The conveyance roller 2 is connected to a driving source and is a driving roller
with a smooth surface, configured to rotate by itself.
[0054] The conveyor 3 is configured to convey each of the sheets 71, 72 at an approximately
equal conveyance speed to the conveyance roller 2.
[0055] The cutting unit 4 is configured to cut the laminated body formed by laminating the
plurality of sheets 71, 72 in a state where the sheets 71, 72 impregnated with the
predetermined chemical are folded back. For example, the cutting unit 4 is configured
so that a cutter roller having a cutting blade on its surface and an anvil roller
having a smooth surface cut the plurality of continuously-conveyed sheets at a predetermined
interval in a direction perpendicular to the conveyance direction.
[0056] Furthermore, like the conveyor 3, the conveyor 9 may be provided at both the upside
and downside. In such a case, the laminated body of the sheets 710, 720 is conveyed
while being sandwiched between an upper conveyer arranged at the upside and a lower
conveyer arranged at the downside. This upper conveyor may be provided with a concave
portion and a convex portion.
[0057] As a result, the laminated body of the sheets 710, 720 after being cut by the cutting
unit 4 is improved in its transfer ability and conveyance stability with respect to
the conveyer 9.
[0058] Herein, a conveyance speed of the conveyor 9 is 3% higher than the conveyor 3 and
the cutting unit 4.
[0059] The conveyer 11 has conveyers 11a, 11b arranged at a predetermined interval in a
cross direction CD intersecting with the conveyance direction MD. The conveyers 11a,
11b are provided with a suction mechanism (not shown) to enable the cut-out sheets
710, 720 conveyed by the conveyer 9 to be conveyed with their outer ends in the widthwise
direction being adsorbed to the conveyance surface. The pusher 13 is arranged between
the conveyers 11a, 11b.
[0060] The pusher 13 is arranged movably in a direction of pushing down the sheets 710,
720 conveyed by the conveyer 11, that is, in a direction of detaching the sheets 710,
720 from the conveyance surfaces of the conveyers 11a, 11b.
[0061] After the laminated body 800 is formed by laminating the predetermined number of
sheets 710, 720 detached from the conveyers 11a, 11b, a stopper S is released and
the laminated body 800 is conveyed by the conveyer 12 toward the pressing device 15.
[0062] The pressing device 15 is configured so that the laminated body 800 formed by laminating
the cut-out sheets 710, 720 is conveyed while both end portions in the conveyance
direction of the laminated body 800 are pressed by a pressing portion from a side
not in contact with the conveyer 14.
[0063] The pressing device 15 has a plurality of rollers 201, 202, 203; press belts 204a,
204b wound around the plurality of rollers 201, 202, 203; and conveyance belts 205,
206 for conveying the laminated body 800.
[0064] Any one of the plural rollers 201, 202, 203 is connected to a driving source and
controlled so as to drive the press belts 204a, 204b at a predetermined speed in the
conveyance direction. The conveyance belt 205 corresponds to the conveyance belt 14.
[0065] The press belts 204a, 204b are wound around the rollers 201, 202, 203 and configured
to be driven in association with the conveyance speed and the conveyance direction
of the laminated body 800. The press belts 204a, 204b are arranged to be interspaced
from each other at a predetermined interval in the cross direction CD intersecting
with the conveyance direction MD. Herein, the predetermined interval is an interval
that allows the press belts 204a, 204b to come in contact with both end portions 800A,
800B in the cross direction CD of the laminated body 800.
[0066] The press belts 204a, 204b according to the present embodiment are formed in a round
tubular shape. That is, the press belts 204, 204b have a cross section in a substantially
circular shape.
[0067] Interval D2 between the outermost periphery of the press belts 204a, 204b wound around
the rollers 201, 202, 203, the outer most periphery which is most distant from the
rotation axes of the rollers 201, 202, 203, and the conveyance surface of the conveyance
belt 205 is made shorter than lamination height D1 of the laminated body 800. The
interval D2 is adjusted to a height that the chemical is prevented from being squeezed
out more than necessary.
[0068] The press belts 204a, 204b are inclined so as to gradually decrease the interval
from D1 to D2, between the outermost periphery of the press belts 204a, 204b and the
conveyance belt 205. Accordingly, a force is gradually applied to the both outer end
portions 800A, 800B in the widthwise direction of the laminated body 800 to be conveyed.
[0069] With the manufacturing method and the manufacturing apparatus 10 according to the
present embodiment, by means of the pressing device 15 configured as described above,
the laminated body 800 can be conveyed while pressing the both end portions 800A,
800B, other than a central region 800C, of the laminated body 800.
[0070] In the manufacturing method according to the present embodiment, the sheets 71, 72
are conveyed in a stacked state, and after cutting, the predetermined number of sheets
are laminated. The sheets 71, 72 which are stacked during conveyance are pressed against
each other by means of the conveyer 3. However, a force of pressing in the laminating
step S106 after cutting is smaller than a force of pressing by the conveyer 3 during
conveyance.
[0071] This is partially because the pressing force cannot be increased for the reason that
the entire surface of the laminated body 800 could be pressed after the laminating
step S106 but in such a case, the chemical would be undesirably shifted to the lower
layer side of the laminated body 800 to cause the shortage of the chemical amount
in sheets at the upper layer side.
[0072] As described above, if there is a difference between an adhesion force between the
sheets which are stacked during conveyance and an adhesion force between the sheets
which are stacked in the laminating step S106, the plurality of sheets pressed strongly
may possibly be taken out all stuck together.
[0073] On the other hand, in the manufacturing method according to the present embodiment,
after the laminating step S107, the laminated body 800 formed by laminating the predetermined
number of sheets is pressed not by uniformly pressing the entire surface but pressing
the both end portions 800A, 800B.
[0074] Therefore, adhesion between the sheets 710, 720 of the laminated body 800 after lamination
of the plural sheets is not increased more than necessary, and adhesion to the sheet
710 subsequent to the sheet 720 can be maintained, thereby being able to avoid the
situation that a plurality of sheets is undesirably taken out all stuck together.
[0075] Furthermore, since the surface of the laminated body 800 is not entirely pressed,
it is possible to prevent variability in an impregnation amount which is caused by
the fact that the chemical is shifted from sheets in the upper layer to sheets in
the lower layer of the laminated body 800.
[0076] With the manufacturing method and the manufacturing apparatus 10 according to the
present embodiment, the amount of predetermined chemical to be impregnated in the
sheets can be uniformed between sheets in the upper layer side and sheets in the lower
layer side. Furthermore, it is also possible to prevent reduction in the easiness
of taking sheets out, which is caused by increase of the amount of predetermined chemical
to be impregnated in the sheets.
[0077] In the manufacturing apparatus 10 according to the present embodiment, the press
belts 204a, 204b are formed in a round tubular shape. This allows release between
sheets in the upper surface side making up the laminated body 800 and the rollers
202, 203 making up the pressing device 15, thereby being able to prevent the sheets
in the upper surface side from being wound around the rollers 202, 203.
[0078] Thus, the present invention has been explained in detail by using the above-described
embodiments; however, it is obvious that for persons skilled in the art, the present
invention is not limited to the embodiments explained herein. The present invention
can be implemented as corrected and modified modes without departing from the gist
and the scope of the present invention defined by the claims. Therefore, the description
of the specification is intended for explaining the example only and does not impose
any limited meaning to the present invention.
[Examples]
[0079] A take-out test was performed by packaging the laminated body formed of seventy-two
sheets in the package main body and taking sheets out one by one. The results are
shown in Figs. 7(a) to 7(c). Specifically, a manufacturing line that one set was formed
by stacking four sheets was made. That is, the laminated body formed of eighteen sets
was produced and sealed in the package body.
[0080] Fig. 7(a) shows the results of a take-out test performed to the laminated body to
which the pressing step was not performed. Fig. 7(b) shows the results of a take-out
test performed to the laminated body in which the entire surface was pressed. Fig.
7(c) shows the results of a take-out performed to the laminated body to which the
pressing step was performed by the pressing device according to the embodiment. In
Figs. 7(a) to 7(c), the vertical axis shows the amount of a pulled-out portion of
subsequent sheet in the event of pop-up (a phenomenon that a subsequent sheet is pulled
out in association with a prior sheet). A portion is length (mm).
[0081] According to the results, it turned out that the laminated body to which the pressing
step was not performed has a strong tendency that four sheets are taken out at one
time. That is, it turned out that one set of sheets stacked in the manufacturing line
is prone to be taken out all stuck together. Furthermore, it turned out that even
in a case of a laminated body with its entire surface being pressed, one set of sheets
stacked in the manufacturing line is prone to be taken out all together.
[0082] On the other hand, it turned out that a laminated body to which the pressing step
is performed by the pressing device according to the embodiment hardly causes the
pop-up and has a strong tendency that all of sheets can be taken out one by one.
[Industrial Applicability]
[0084] According to the present invention, it is possible to provide a method and an apparatus
for manufacturing wet wipes, by which such wet wipes can be manufactured, that are
capable of preventing variability in an impregnation amount of a predetermined chemical
and reduction in the easiness of taking sheets out, which is caused by increasing
an impregnation rate of the predetermined chemical.
[Reference Signs List]
[0085] 1...Impregnating unit, 2...Conveyance roller, 3...Conveyer, 4...Cutting unit, 5...Folding
unit, 9...Conveyer, 10...Manufacturing apparatus, 11...Conveyer, 11a, 11b...Conveyer,
12...Conveyer, 13...Pusher, 14...Conveyance belt, 15...Pressing device, 20...Package
main body, 21...Opening portion, 22...Label member, 70...Sheet, 71, 72...Sheet, 100...Package
body, 201, 202, 203...Roller, 204a, 204b...Press belt, 205, 206...Conveyance belt,
710, 720...Sheet, 800...Laminated body, 800A, 800B...Both end portions, 800C ... Central
region