WO2019069751A1 - 複合シートの製造装置及び製造方法 - Google Patents
複合シートの製造装置及び製造方法 Download PDFInfo
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- WO2019069751A1 WO2019069751A1 PCT/JP2018/035514 JP2018035514W WO2019069751A1 WO 2019069751 A1 WO2019069751 A1 WO 2019069751A1 JP 2018035514 W JP2018035514 W JP 2018035514W WO 2019069751 A1 WO2019069751 A1 WO 2019069751A1
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- roll
- sheet
- recess
- peripheral surface
- outer peripheral
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15699—Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
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- A—HUMAN NECESSITIES
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- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
-
- A—HUMAN NECESSITIES
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- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
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-
- A—HUMAN NECESSITIES
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- A61F13/00—Bandages or dressings; Absorbent pads
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- A61F13/15577—Apparatus or processes for manufacturing
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- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
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- A61F13/00—Bandages or dressings; Absorbent pads
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- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations
- A61F13/5123—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations the apertures being formed on a multilayer top sheet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/222—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length characterised by the shape of the surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/30—Making multilayered or multicoloured articles
- B29C43/305—Making multilayered articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/70—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
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- B29C66/729—Textile or other fibrous material made from plastics
- B29C66/7294—Non woven mats, e.g. felt
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- A—HUMAN NECESSITIES
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
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- A—HUMAN NECESSITIES
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- A—HUMAN NECESSITIES
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- A61F13/00—Bandages or dressings; Absorbent pads
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Definitions
- the present invention relates to a device and method for producing a composite sheet, and more particularly to a device and method for producing a composite sheet having an uneven shape on the surface.
- corrugated shape on the surface is used for the skin contacting surface of absorbent articles, such as a disposable diaper and a sanitary napkin.
- absorbent articles such as a disposable diaper and a sanitary napkin.
- Such a composite sheet is manufactured, for example, using the apparatus shown in the schematic of FIG.
- a first roll 81 whose circumferential surface has a concavo-convex shape and a second roll 82 which has a concavo-convex shape that meshes with the concavo-convex shape of the first roll 81.
- the first sheet 84 passes between them, and the first sheet 84 is embossed.
- the second sheet 85 is superimposed on the unevenly shaped first sheet 84, and the two sheets 84 and 85 are joined by heat fusion when passing between the first roll 81 and the third roll 83.
- the composite sheet 86 is completed (see, for example, Patent Document 1).
- a composite sheet 150 in which both the first sheet 152 and the second sheet 154 are shaped has been proposed.
- the first sheet 152 has a raised portion 153 formed by shaping and a boundary portion 153 k adjacent to the raised portion 153.
- the second sheet 154 has a projection 155 formed by shaping and a flat portion 156 adjacent to the projection 155.
- the protrusion 155 protrudes on the same side as the protrusion 153 of the first sheet 152 inside the protrusion 153 of the first sheet 152.
- first sheet 152 and the second sheet 154 are bonded to the boundary 153k of the first sheet 152 by heat fusion, ultrasonic welding, or adhesion using an adhesive.
- a plurality of junctions 158 are spaced apart from one another, ie, formed intermittently.
- Such a composite sheet 150 is manufactured using an apparatus 110 shown schematically in FIG. As shown in FIG. 10, the device 110 has a plurality of play in and out of the recess of the first roll 112 around the first roll 112 having a plurality of recesses (not shown).
- a second roll 130 having a first protrusion 132, a third roll 116, and a fourth having a plurality of second protrusions 142 that enter and leave the recess of the first roll 112 with play.
- a roll 140 and a fifth roll 118 are arranged.
- the first sheet 152 is shaped as it passes between the first roll 112 and the second roll 130, and the second sheet 154 is superimposed thereon.
- the two superimposed sheets 152 and 154 are joined together as they pass between the first roll 112 and the third roll 116.
- both sheets 152, 154 pass between the first roll 112 and the fourth roll 140, the second sheet 154 is shaped.
- both sheets 152, 154 pass between the first roll 112 and the fifth roll 118, and the bonding of the both sheets 152, 154 is strengthened (see, for example, Patent Document 2).
- the composite sheet When producing the composite sheet, the composite sheet can be produced at higher speed by increasing the rotation speed of the first roll.
- the problem to be solved by the present invention is that it is easy to manufacture a composite sheet at a higher speed, and it is possible to manufacture a composite sheet of stable quality even if the composite sheet is manufactured at a higher speed. It is an object of the present invention to provide an apparatus and method for producing a composite sheet that can
- the present invention provides a composite sheet manufacturing apparatus configured as follows in order to solve the above problems.
- the composite sheet manufacturing apparatus comprises: (a) a first roll having a first outer peripheral surface and a plurality of recesses receding from the first outer peripheral surface; (b) adjacent to the first roll Are arranged so as to fit, rotate in synchronization with the first roll, and project from a second outer peripheral surface facing the first outer peripheral surface of the first roll and the second outer peripheral surface, (C) a second roll having a plurality of first projections entering and exiting said recess of said first roll with play between said recess of said first roll and (c) said A third roll disposed adjacent to the first roll, rotating in synchronization with the first roll, and having a third outer peripheral surface facing the first outer peripheral surface of the first roll And.
- a first sheet is supplied between the first roll and the second roll, conveyed while being supported by the first outer peripheral surface of the first roll, Of the second roll as it passes between the second roll and (ii) the first sheet passes between the first roll and the second roll.
- the first protrusion pushes the first sheet into the recess of the first roll to shape the first sheet, and (iii) the second sheet is formed.
- (1) being superimposed on one sheet and conveyed with the first sheet, passing between the first roll and the third roll;
- the first sheet and the second When the sheet passes between the first roll and the third roll, the first roll and the third roll
- the first sheet and the second sheet are configured to sandwich the first sheet and the second sheet, and to bond the first sheet and the second sheet to each other.
- the first roll and the third roll have the same outer diameter
- (B) the third roll rotates at the same rotation speed as the first roll. As such, it is coupled to the first roll via a first gear pair.
- the first and third rolls rotate at the same number of rotations, the first number of rotations of the third roll is larger than the number of rotations of the first roll. It is easy to increase the number of revolutions of the roll.
- the composite sheet can be produced at higher speed as the rotation speed of the first roll is increased.
- first roll and the third roll are coupled to each other via the gear, relative rotational errors between the first roll and the third roll do not change even if the number of rotations changes. Therefore, even if the number of rotations is increased, the quality of the composite sheet can be maintained.
- first and third rolls joined with the first and second sheets interposed therebetween have the same outer diameter, rotate at the same number of rotations, and always have the same position. Because they face each other, they are easy to get familiar with. Therefore, a good bonding state between the first sheet and the second sheet can be maintained.
- the outer diameters of the first and third rolls are the same size, and the portions where the first and third rolls face each other are always the same, readjustment at the time of parts replacement is easy. Yes, it is easy to maintain assembly accuracy. As a result, the quality of the manufactured composite sheet can be kept constant.
- the outer diameter of the second roll is the same size as the outer diameter of each of the first roll and the third roll.
- the second roll is coupled to the first roll via a second gear pair so as to rotate at the same rotational speed as the first roll.
- the relative rotation between the first roll and the second roll even if the number of rotations changes.
- the error does not change.
- the recess of the first roll and the first protrusion of the second roll entering and exiting the recess correspond to each other in a one-to-one manner. Therefore, it is possible to maintain a good shaping state of the first sheet.
- the composite sheet manufacturing apparatus (d) is disposed adjacent to the first roll, rotates in synchronization with the first roll, and rotates the first of the first roll.
- a fourth roll having a second protrusion to move in and out and (e) being disposed adjacent to the first roll, and rotating in synchronization with the rotation of the first roll, the first outer periphery And a fifth roll having a fifth outer peripheral surface facing the surface.
- the outer diameter of the fifth roll is the same size as the outer diameter of each of the first roll and the third roll, and (D) the fifth roll is It is coupled to the first roll via a third gear pair so as to rotate at the same rotation speed as the one roll.
- the outer diameter of the fourth roll is the same size as the outer diameter of each of the first roll and the third roll.
- the fourth roll is coupled to the first roll via a fourth gear pair so as to rotate at the same rotation speed as the first roll.
- the relative rotation between the first roll and the fourth roll even if the number of rotations changes.
- the error does not change.
- the recess of the first roll and the second protrusion of the fourth roll entering and exiting the recess correspond to each other one by one. Therefore, it is possible to maintain a good shape of the second sheet.
- the outer diameters of the first and fourth rolls are the same size, and the parts where the first and fourth rolls face each other are always the same, readjustment at the time of parts replacement is easy. Yes, it is easy to maintain assembly accuracy. As a result, the quality of the manufactured composite sheet can be kept constant.
- this invention provides the manufacturing method of the composite sheet comprised as follows, in order to solve the said subject.
- a roll and a third roll are disposed, and the first roll, the second roll and the third roll are rotated in synchronization with each other, and the first protrusion of the second roll is rotated.
- the first roll and the third roll perform the first process.
- (A) outer diameters of the first roll and the third roll are set to the same size
- (B) the third roll is coupled via the first gear pair. Coupled to the first roll, the third roll is rotated at the same rotational speed as the first roll.
- the first roll is compared with the case where the number of rotations of the third roll is larger than the number of rotations of the first roll.
- the number of rotations of can be easily increased.
- the composite sheet can be produced at higher speed as the rotation speed of the first roll is increased.
- the first roll and the third roll are connected to each other via the gear, even if the number of rotations changes, the relative relation between the first roll and the third roll The rotation error does not change. Therefore, even if the number of rotations is increased, the quality of the composite sheet can be maintained.
- first and third rolls joined with the first and second sheets interposed therebetween have the same outer diameter, rotate at the same number of rotations, and always have the same position. Because they face each other, they are easy to get familiar with. Therefore, a good bonding state between the first sheet and the second sheet can be maintained.
- the outer diameters of the first and third rolls are the same size, and the opposing portions of the rolls are always the same, readjustment at the time of parts replacement is easy, and assembly accuracy can be maintained. It is easy. As a result, the quality of the manufactured composite sheet can be kept constant.
- the outer diameter of the second roll is the same size as the outer diameter of each of the first roll and the third roll, and the second roll is Coupled to the first roll via two gear pairs, the second roll is rotated at the same rotational speed as the first roll.
- the relative rotation between the first roll and the second roll even if the number of rotations changes.
- the error does not change.
- the recess of the first roll and the first protrusion of the second roll entering and exiting the recess correspond to each other in a one-to-one manner. Therefore, it is possible to maintain a good shaping state of the first sheet.
- the method for producing a composite sheet comprises: (iv) arranging a fourth roll having a second protrusion and a fifth roll so as to be adjacent to the first roll; The fifth roll and the fifth roll in synchronization with the first roll, and the second projection of the fourth roll is played between the recess of the first roll and the second roll of the fourth roll.
- a fourth step of moving in and out of the recess of the first roll and (v) the first step passing between the first roll and the third roll and joined to each other And the second sheet are conveyed while being supported by the outer peripheral surface of the first roll, and passed between the first roll and the fourth roll, and then the first A fifth step of passing between a roll and the fifth roll; (vi) the first step When the sheet and the second sheet pass between the first roll and the fourth roll, the second sheet of the fourth roll is subjected to the first sheet by the second protrusion of the fourth roll.
- the outer diameter of the fifth roll is made the same size as the outer diameter of each of the first roll and the third roll, and (D) the fifth roll Is coupled to the first roll via a third gear pair, and the fifth roll is rotated at the same rotational speed as the first roll.
- the outer diameter of the fourth roll is equal to the outer diameter of each of the first roll and the third roll, and the fourth roll is a fourth roll.
- the fourth roll is coupled to the first roll via a gear pair of the second set of gears, and the fourth roll is rotated at the same rotational speed as the first roll.
- the relative rotational error between the first roll and the fourth roll does not change even if the number of rotations changes.
- the recess of the first roll and the second protrusion of the fourth roll entering and exiting the recess correspond to each other one by one. Therefore, it is possible to maintain a good shape of the second sheet.
- the outer diameters of the first and fourth rolls are the same size, and the parts where the first and fourth rolls face each other are always the same, readjustment at the time of parts replacement is easy. Yes, it is easy to maintain assembly accuracy. As a result, the quality of the manufactured composite sheet can be kept constant.
- FIG. 1 is a schematic view of a composite sheet manufacturing apparatus.
- Example 1 FIG. 2 is a schematic view of a drive mechanism of a composite sheet manufacturing apparatus.
- Example 1 FIG. 3 is a cross-sectional view taken along the line AA of FIG.
- Example 1 FIG. 4 is a principal part expanded sectional view of the manufacturing apparatus of a composite sheet.
- Example 1 FIG. 5 is a schematic view of a composite sheet manufacturing apparatus.
- FIG. 6 is a schematic view of a drive mechanism of a composite sheet manufacturing apparatus.
- Example 2 is a schematic view of a composite sheet manufacturing apparatus.
- FIG. 7 is a schematic view of a composite sheet manufacturing apparatus.
- FIG. 8 is a cross-sectional view of a composite sheet.
- FIG. 9 is an image diagram of a composite sheet.
- FIG. 10 is a schematic view of a composite sheet manufacturing apparatus.
- Example 1 An apparatus and a method for producing a composite sheet of Example 1 will be described with reference to FIGS. 1 to 4.
- FIG. 1 is a schematic view showing the configuration of a composite sheet manufacturing apparatus 10.
- second to fifth rolls 22, 24, 26, 28 are arranged in order so as to be adjacent to the first roll 20.
- the first to fifth rolls 20, 22, 24, 26, 28 have rotation center lines 20x, 22x, 24x, 26x, 28x parallel to one another, and are indicated by arrows 20r, 22r, 24r, 26r, 28r, respectively. It rotates in synchronization with the direction shown.
- the second to fifth rolls 22, 24, 26, 28 can be arranged at appropriate intervals around the first roll 20, but if they are equally arranged as shown in FIG. Because it is good, the high speed rotation of the first to fifth rolls 20, 22, 24, 26, 28 is facilitated.
- FIG. 4 is a principal part expanded sectional view of the manufacturing apparatus 10 of a composite sheet.
- the first roll 20 has a cylindrical first outer circumferential surface 20 s, a plurality of recesses 20 a receding radially inward from the first outer circumferential surface 20 s, and a first outer circumferential surface. And a plurality of sealing protrusions 20b protruding radially outward from the surface 20s.
- the second roll 22 projects radially outward from the cylindrical second outer peripheral surface 22s facing the first outer peripheral surface 20s of the first roll 20 and the second outer peripheral surface 22s, and the first roll And a first projection 22a that enters and exits the recess 20a of the first roll 20 with play between the 20 recesses 20a.
- the third roll 24 has a cylindrical third outer circumferential surface 24 s facing the first outer circumferential surface 20 s of the first roll 20.
- the fourth roll 26 has a diameter from the cylindrical fourth outer peripheral surface 26s facing the first outer peripheral surface 20s of the first roll 20 and the fourth outer peripheral surface 26s.
- the second protrusion 26 a protrudes outward in the direction and enters and exits the recess 20 a of the first roll 20 with play between the recess 20 a (see FIG. 4) of the first roll 20.
- the second protrusion 26 a is preferably smaller in height and width than the first protrusion 22 a of the second roll 22.
- the fifth roll 28 has a cylindrical fifth outer circumferential surface 28 s facing the first outer circumferential surface 20 s of the first roll 20.
- the outer diameters of the first to fifth rolls 20, 22, 24, 26, 28 have the same size.
- the outer diameter of the first roll 20 is twice the radius 20k (see FIG. 4) from the rotation center line 20x of the first roll 20 to the tip of the seal projection 20b (see FIG. 4) of the first roll 20. is there.
- the outer diameter of the second roll 22 is twice the radius 22k (see FIG. 4) from the rotation center line 22x of the second roll 22 to the tip of the first projection 22a of the second roll 22.
- the outer diameter of the third roll 24 is the diameter of the third outer circumferential surface 24 s of the third roll 24.
- the outer diameter of the fourth roll 26 is twice the radius from the rotation center line 26 x of the fourth roll 24 to the tip of the second projection 26 a of the fourth roll 26.
- the outer diameter of the fifth roll 28 is the diameter of the fifth outer circumferential surface 28s of the fifth roll 28.
- FIG. 2 is a schematic view of the drive mechanism 11 of the composite sheet manufacturing apparatus 10 as seen parallel to the rotation center lines 20x, 22x, 24x, 26x, 28x (see FIG. 1).
- second to fifth gears 32, 34, 36, 38 are arranged around the first gear 30 so as to mesh with the first gear 30.
- the rotations of the first to fifth gears 30, 32, 34, 36, 38 are configured to be transmitted to the first to fifth rolls 20, 22, 24, 26, 28, respectively.
- a plurality of first gears 30 are provided, and one of the second to fifth rolls 22, 24, 26, 28 meshes with one of the first gears, and the second to fifth rolls 22, 24,.
- the other one of the gears 26 and 28 may be configured to mesh with the other one of the first gear.
- FIG. 3 is a cross-sectional view taken along the line AA of FIG.
- the first gear 30 is fixed to a first rotation shaft 40 rotatably supported by a frame 41 of the composite sheet manufacturing apparatus 10 via a bearing 41.
- the first rotation shaft 40 is coupled to the first roll 20 via a shaft coupling, although not shown, and the rotation of the first gear 30 is transmitted to the first roll 20, and the first rotation shaft 40
- the roll 20 is configured to rotate at the same rotational speed as the first gear 30.
- the second to fifth gears 32, 34, 36, 38 are respectively connected to the frame 12 of the composite sheet manufacturing apparatus 10 via bearings 43, 45, 47, 48 (43, 47 are not shown). It is being fixed to the 2nd-5th axis of rotation 42, 44, 46, 48 (42 and 46 not shown) supported rotatably.
- the second to fifth rotation shafts 42, 44, 46, 48 are respectively coupled to the second to fifth rolls 22, 24, 26, 28 via a shaft joint (not shown), and
- the five rolls 22, 24, 26, 28 are configured to rotate at the same rotational speed as the second to fifth gears 32, 34, 36, 38. That is, the third roll 24 is coupled to the first roll 20 via the first gear pair 30, 34 so as to rotate at the same rotational speed as the first roll 20.
- the second roll 22 is coupled to the first roll 20 via the second gear pair 30, 32 so as to rotate at the same rotational speed as the first roll 20.
- the fifth roll 28 is coupled to the first roll 20 via the third gear pair 30, 38 so as to rotate at the same rotational speed as the first roll 20.
- the fourth roll 26 is coupled to the first roll 20 via the fourth gear pair 30, 36 so as to rotate at the same rotational speed as the first roll 20.
- first to fifth gears 30, 32, 34, 36, 38 and the first to fifth rolls 20, 22, 24, 26, 28 each have the same reduction ratio reduction mechanism or acceleration. It may be coupled via a mechanism.
- a pulley 46 is fixed to the first rotation shaft 40.
- the pulley 46 transmits the rotation of a drive motor (not shown) via the timing belt 48.
- the number of teeth of the first to fifth gears 30, 32, 34, 36, 38 is the same, and the first gear 30 and the second to fifth gears 32, 34, 36, 38 mesh with each other. Therefore, when rotation is transmitted to the pulley 46 by a drive motor (not shown), the first gear 30 rotates and the second to fifth gears 32, 34, 36, 38 rotate the same as the first gear 30. As a result, the first to fifth rolls 20, 22, 24, 26, 28 rotate at the same rotational speed.
- the rotation of the drive motor may be distributed from the first rotation shaft 40 to the other rotation shafts 42, 44, 46, 48, but the balance is good, but the rotation of the drive motor is the first rotation shaft. It is also possible to be configured to be transmitted to one or more of the rotating shafts 42, 44, 46, 48 other than 40 and distributed from the rotating shaft to the other rotating shaft.
- the composite sheet manufacturing apparatus 10 is supplied with the first sheet 2 and the second sheet 4 to manufacture and discharge the composite sheet 6.
- the composite sheet 6 has a configuration similar to that of the composite sheet 150 shown in FIGS. 8 and 9, and both the first sheet 2 and the second sheet 4 are shaped, and the first sheet 2 and the second sheet 4 are formed.
- the two sheets 4 are intermittently joined.
- the first sheet 2 and the second sheet 4 may be selected from appropriate materials, for example, use a material that deforms or fuses when heated, such as a non-woven fabric containing a resin material. Is preferred.
- the first sheet 2 is supplied between the first roll 20 and the second roll 22 via the first guide roll 50 as shown by the arrow 2 f.
- the first sheet 2 is supported by the first outer circumferential surface 20 s of the first roll 20 and conveyed in synchronization with the rotation of the first roll 20.
- the second sheet 4 is superimposed on the first sheet 2 via the second guide roll 52 and conveyed together with the first sheet 2 as indicated by the arrow 4 f.
- the completed composite sheet 6 is discharged through the third guide roll 54 as indicated by the arrow 6f.
- the first sheet 2 When passing between the first roll 20 and the second roll 22, the first sheet 2 is pushed into the recess 20 a of the first roll 20 by the first projection 22 a of the second roll 22. It is deformed and shaped into a predetermined shape.
- the first sheet 2 passes between the first roll 20 and the second roll 22, the first sheet 2 has the first outer circumferential surface 20 s of the first roll 20 and the second roll 22.
- the first sheet 2 can be easily shaped if it is sandwiched between the second outer peripheral surface 22s and the second outer peripheral surface 22s, which is preferable.
- the first sheet 2 is configured to pass between the first outer peripheral surface 20s of the first roll 20 and the second outer peripheral surface 22s of the second roll 22 with a gap therebetween. It is also possible to shape the first sheet 2.
- the first roll 20 is preferably configured to hold the first sheet 2 by suction.
- an air suction hole (not shown) is provided in the first outer peripheral surface 22s of the first roll 20 and the recess 20a (see FIG. 4).
- a recess 20 a of the first roll 20 is formed by the second projection 26 a of the fourth roll 26 (see FIG. 4) to be deformed, and shaped into a predetermined shape.
- the tip of the second projection 26a of the fourth roll 26 is sharpened, and the second projection 26a of the fourth roll 26 is configured to form a through hole in the shaping portion of the second sheet 4 May be
- the first roll 20, the third roll 24, and the fifth roll 28 have heaters (not shown) provided therein. Thereby, when the first sheet 2 and the second sheet 4 are sandwiched between the seal projection 20b (see FIG. 4) of the first roll 20 and the outer peripheral surface 24s of the third roll 24, They are joined together by heat sealing. Further, the first sheet 2 and the second sheet 4 joined to each other are sandwiched between the seal projection 20b (see FIG. 4) of the first roll 20 and the outer peripheral surface 28s of the fifth roll 28. Sometimes, the bonds between each other are strengthened.
- first roll 20 it is also possible to provide a heater only on the first roll 20 or to provide a heater only on the third roll 24 and the fifth roll 28. Further, at least one of the first roll 20, the third roll 24 and the fifth roll 28 can also be configured to be heated by a heating unit such as a heater provided outside.
- the seal protrusion 20b By providing a plurality of seal protrusions 20b (see FIG. 4) on the first outer peripheral surface 20s of the first roll 20, the area in which the first sheet 2 and the second sheet 4 are in contact with each other is intermittent Can be joined together.
- the seal projection 20b (see FIG. 4) is eliminated, and the first sheet 2 and the second sheet 2 are interposed between the first outer peripheral surface 20s of the first roll 20 and the third outer peripheral surface 24s of the third roll 24. It is also possible to sandwich the entire sheet 4 and the entire contact area of the first sheet 2 and the second sheet 4 continuously.
- the second roll 22 having the first protrusion 22a so as to be adjacent to the first roll 20 in which the plurality of recesses 20a are formed in the outer peripheral surface 20s, and the third roll 24 and rotates the first roll 20, the second roll 22 and the third roll 24 in synchronization with each other, and rotates the first projection 22a of the second roll 22 to the first roll 20.
- the recess 20a of the first roll 20 is moved in and out with play between the recess 20a and the recess 20a.
- the outer diameter of each of the first roll 20 and the third roll 24 is made the same size, and the third roll 24 is coupled to the first roll 20 via the first gear pair 30, 34, The third roll 24 is rotated at the same rotation speed as the first roll 20.
- the outer diameter of the second roll 22 is made the same size as the outer diameter of each of the first roll 20 and the third roll 24, and the second roll 22 is interposed between the second gear pair 30, 32.
- the second roll 22 is rotated at the same rotation speed as the first roll 20. This is the first step.
- the fourth roll 26 having the second projection 26 a and the fifth roll 28 are disposed adjacent to the first roll 20, and the fourth roll 26 and the fifth roll 26 are arranged.
- the recess 20 a of the first roll 20 is moved in and out.
- the outer diameter of the fifth roll 28 is made the same size as the outer diameter of each of the first roll 20 and the third roll 24, and the fifth roll 28 is moved by the third gear pair 30, 38.
- the fifth roll 28 is rotated at the same rotation speed as the first roll 20 by being coupled to the first roll 20.
- the outer diameter of the fourth roll 26 is made the same size as the outer diameter of each of the first roll 20 and the third roll 24, and the fourth roll 26 is interposed between the fourth gear pair 30, 36.
- the fourth roll 26 is rotated at the same number of revolutions as the first roll 20. This is the fourth step.
- the first sheet 2 is supplied between the rotating first roll 20 and the second roll 22 and conveyed while being supported by the outer peripheral surface 20s of the first roll 20 , Between the first roll 20 and the third roll 24.
- the first projection 22 a of the second roll 22 causes the first sheet 2 to move to the first roll 20.
- the first sheet 2 is shaped by being pushed into the recess 20a. This is the second step.
- the second sheet 4 is stacked on the shaped first sheet 2 and conveyed together with the first sheet 2 to form the first roll 20 and the third roll 24. Pass between.
- the first sheet 2 and the second sheet 4 pass between the first roll 20 and the third roll 24, the first sheet by the first roll 20 and the third roll 24
- the first sheet 2 and the second sheet 4 are joined to each other by sandwiching the second sheet 2 and the second sheet 4. This is the third step.
- the outer peripheral surface 20s of the first roll 20 supports the first sheet 2 and the second sheet 4 which are passed through the first roll 20 and the third roll 24 and joined to each other.
- the sheet is conveyed while passing between the first roll 20 and the fourth roll 26 and then between the first roll 20 and the fifth roll 28. This is the fifth step.
- the first sheet 2 is raised at the position corresponding to the recess 20 a of the first roll 20 by the first protrusions 22 a of the second roll 22. A part is formed. Further, at a position corresponding to the seal projection 20b of the first roll 20, a joined portion in which the first sheet 2 and the second sheet 4 are joined to each other is formed. For example, the joints may be distributed around the ridges. Inside the ridges of the first sheet 2, a portion in which the second sheet 4 is shaped by the second projections 26 a of the fourth roll 26 is arranged.
- the first to fifth rolls 20, 22, 24, 26, 28 having the same outer diameter have gears 30, 32, 34,. They are connected to one another via 36, 38 and are configured to rotate at the same rotational speed.
- the composite sheet manufacturing apparatus 10 it is easy to manufacture the composite sheet 6 at a higher speed, and even if the composite sheet 6 is manufactured at a higher speed, the composite sheet 6 of stable quality can be manufactured.
- the rotation speed of the other rolls 22, 24, 26, 28 is configured to be larger than the rotation speed of the first roll 20
- the first rotation speed of the first roll 20 may be increased by increasing the rotation speed of the first roll 20. Because of the technical obstacles that arise with respect to the other rolls 22, 24, 26, 28 rotating at a higher speed than the roll 20 of FIG. 1, the rotational speed of the first roll 20 is technical at the other rolls 22, 24, 26, 28 It is restricted by the number of rotations smaller than the upper limit number of rotations which failure does not occur.
- the number of revolutions of the first roll 20 is equal to that of the other rolls 22, 24, 26, , 28 can be increased to the same rotation speed as the upper limit rotation speed. Therefore, it is easy to increase the number of rotations of the first roll 20.
- the composite sheet 6 can be manufactured at higher speed as the rotation speed of the first roll 20 is increased.
- the relative rotational error between the first roll 20 and the other rolls 22, 24, 26, 28 becomes large, the quality of the composite sheet 6 is lowered due to the shaping or the positional deviation of bonding.
- the first roll 20 and the other rolls 22, 24, 26, 28 are separately driven to rotate and controlled so as to be synchronized with each other, when the number of rotations is increased, the first roll 20 is delayed due to control delay or the like. And the relative rotation error with the other rolls 22, 24, 26, 28 becomes large, making it difficult to maintain the quality of the composite sheet 6.
- the first roll 20 and the other rolls 22, 24, 26, 28 are connected to each other via the gears 30, 32, 34, 36, 38, the first rotation is changed even if the number of rotations changes. Because the relative rotational error between the roll 20 and the other rolls 22, 24, 26, 28 does not change, the quality of the composite sheet 6 can be maintained even if the number of rotations of the first roll 20 is increased. .
- first roll 20 and the third and fifth rolls 24 and 28, which sandwich and join the first and second sheets 2 and 4 have the same outer diameter, and the same number of rotations Because it rotates at the same point always opposite each other, it is easy to get familiar. Therefore, it is possible to maintain a good bonding state between the first sheet 2 and the second sheet 4.
- the recess 20a of the first roll 20 and the first and second projections 22a, 26a of the second and fourth rolls 22, 26 inserted into the recess 20a correspond to each other one to one. . Therefore, the first and second sheets 2 and 4 can be maintained in a good shape.
- first to fifth rolls 20, 22, 24, 26, 28 have the same outer diameter, and the first roll 20 and the second to fifth rolls 22, 24, 26, 28 have the same size. Since the parts facing each other are always the same, readjustment at the time of part replacement is easy, and it is easy to maintain the assembly accuracy. As a result, the quality of the manufactured composite sheet 6 can be kept constant.
- the composite sheet 6 of stable quality can be manufactured.
- Modification 1 In Modification 1, the fourth roll 26 and the fifth roll 28 are not included in the configuration of the first embodiment.
- the second roll 22 and the third roll 24 may be arranged around the first roll 20 at an appropriate angle.
- the fifth to seventh steps are not included in the steps of manufacturing the composite sheet described above.
- the first modification as in the first embodiment, it is easy to manufacture a composite sheet at a higher speed, and a composite sheet of stable quality can be manufactured even if the composite sheet is manufactured at a higher speed.
- Example 2 An apparatus and a method for producing a composite sheet of Example 2 will be described with reference to FIGS. 5 and 6.
- the second embodiment differs from the first embodiment in that the outer diameters of the second and fourth rolls are different from the outer diameter of the first roll.
- the following description will be made while paying attention to the difference from the first embodiment, and the same reference numerals as the first embodiment are used for the same components as the first embodiment.
- FIG. 5 is a schematic view showing the configuration of a composite sheet manufacturing apparatus 10a.
- the composite sheet manufacturing apparatus 10 a has the second to fifth rolls 23 in order so as to be adjacent to the first roll 20 as in the composite sheet manufacturing apparatus 10 of the first embodiment.
- 24, 27, 28 are arranged.
- the first to fifth rolls 20, 23, 24, 27, 28 have rotation center lines 20x, 23x, 24x, 27x, 28x parallel to one another, and are indicated by arrows 20r, 23r, 24r, 27r, 28r, respectively. It rotates in synchronization with the direction shown.
- the first and second sheets 2 and 4 are supplied through the first and second guide rolls 50 and 52 as shown by arrows 2f and 4f, while being synchronized with the rotation of the first roll 20.
- the first and second protrusions 23a and 27a are conveyed along a predetermined path along the outer peripheral surface 20s of the first roll 20 and project radially outward from the outer peripheral surface 22s of the second and fourth rolls 23 and 27. Are shaped into a predetermined shape and joined together.
- the completed composite sheet 6 is discharged through the third guide roll 54, as indicated by the arrow 6f.
- the outer diameters of the third and fifth rolls 24 and 28 are the same as the outer diameter of the first roll 20. Unlike the first embodiment, the outer diameters of the second and fourth rolls 23 and 27 are different from the outer diameter of the first roll 20, and preferably smaller than the outer diameter of the first roll 20. For example, the outer diameters of the second and fourth rolls 23 and 27 are about 1/3 of the outer diameter of the first roll 20.
- FIG. 6 is a schematic view of the drive mechanism 11a of the composite sheet manufacturing apparatus 10a, viewed in parallel with the rotation center lines 20x, 23x, 24x, 27x, 28x (see FIG. 5).
- the drive mechanism 11a like the drive mechanism 11 of the first embodiment, has second to fifth gears 33, so as to mesh with the first gear 30 around the first gear 30.
- 34, 37, 38 are arranged.
- the rotations of the first to fifth gears 30, 33, 34, 37, 38 are configured to be transmitted to the first to fifth rolls 20, 23, 24, 27, 28, respectively.
- the number of teeth of the first, third and fifth gears 30, 34, 38 is the same.
- the number of teeth of the second and fourth gears 33 and 37 is different from the number of teeth of the first gear 30, and preferably smaller than the number of teeth of the first gear 30.
- a timing belt or the like may be used instead of the second and fourth gears 33 and 37. Further, the second and fourth rolls 23 and 27 and the first, third and fifth rolls 20, 24 and 28 may be separately driven.
- the fourth roll 26 having the second projection 26 a and the fifth roll 28 are disposed adjacent to the first roll 20, and the fourth roll 26 and the fifth roll 26 are arranged.
- the recess 20 a of the first roll 20 is moved in and out.
- the outer diameter of the fifth roll 28 is made the same size as the outer diameter of each of the first roll 20 and the third roll 24, and the fifth roll 28 is moved by the third gear pair 30, 38.
- the fifth roll 28 is rotated at the same rotation speed as the first roll 20 by being coupled to the first roll 20. This is the fourth step.
- the first sheet 2 is supplied between the rotating first roll 20 and the second roll 23 and conveyed while being supported by the outer circumferential surface 20s of the first roll 20 , Between the first roll 20 and the third roll 24.
- the first protrusion 23 a of the second roll 23 makes the first sheet 2 of the first roll 20.
- the first sheet 2 is shaped by being pushed into the recess 20a. This is the second step.
- the second sheet 4 is stacked on the shaped first sheet 2 and conveyed together with the first sheet 2 to form the first roll 20 and the third roll 24. Pass between.
- the first sheet 2 and the second sheet 4 pass between the first roll 20 and the third roll 24, the first sheet by the first roll 20 and the third roll 24
- the first sheet 2 and the second sheet 4 are joined to each other by sandwiching the second sheet 2 and the second sheet 4. This is the third step.
- the outer peripheral surface 20s of the first roll 20 supports the first sheet 2 and the second sheet 4 which are passed through the first roll 20 and the third roll 24 and joined to each other.
- the sheet is conveyed while passing between the first roll 20 and the fourth roll 26 and then between the first roll 20 and the fifth roll 28. This is the fifth step.
- the composite sheet 6 can be manufactured by the steps (1) to (6).
- the first, third, and fifth rolls 20, 24, and 28 having the same outer diameter have the first, third, and fifth rolls. It is configured to rotate at the same rotational speed via the gears 30, 34, and 38 of FIG.
- the composite sheet manufacturing apparatus 10a it is easy to manufacture the composite sheet 6 at a higher speed, and even if the composite sheet 6 is manufactured at a higher speed, the composite sheet 6 of stable quality can be manufactured.
- the third and fifth rolls 24, 28 sandwich the first and second sheets 2, 4 with the first roll 22, whereas the second and fourth rolls 23, 27 sandwich the first and second sheets 2, 4. Since the projections 23a and 27a are moved in and out with play between the first roll 22 and the recess 20a of the first roll 22, the upper limit number of rotations of the third and fifth rolls 24 and 28 is the second and fourth Lower than the upper limit number of rotations of the rolls 23 and 27. Therefore, compared with the conventional configuration in which the rotation speed of the other roll is larger than the rotation speed of the first roll, the rotation speeds of the third and fifth rolls 24 and 28 are the same as the rotation speed of the first roll 20 As well, the number of rotations of the first roll can be made larger than that of the conventional configuration.
- the rotation speed of the second and fourth rolls 23 and 27 can be made larger than the rotation speed of the first roll 20, so the second and fourth rolls 23, 27 and the second and fourth rolls Gears 33 and 37 transmitting rotation to 23 and 27 can be made smaller. Therefore, the composite sheet manufacturing apparatus 10 a can be smaller than the composite sheet manufacturing apparatus 10 of the first embodiment.
- the relative rotational error between the first roll 20 and the other rolls 23, 24, 27, 28 becomes large, the quality of the composite sheet 6 is lowered due to the forming, the positional deviation of bonding, and the like.
- the first roll 20 and the other rolls 23, 24, 27, 28 are separately driven to rotate and controlled so as to be synchronized with each other, when the number of rotations is increased, the first roll 20 may be delayed due to control delay or the like.
- the relative rotation error with the other rolls 23, 24, 27, 28 becomes large, and it becomes difficult to maintain the quality of the composite sheet 6.
- the first roll 20 and the other rolls 23, 24, 27, 28 are coupled to each other via the gears 30, 33, 34, 37, 38, the first rotation is changed even if the number of rotations changes. Because the relative rotational error between the roll 20 and the other rolls 23, 24, 27, 28 does not change, the quality of the composite sheet 6 can be maintained even if the number of rotations of the first roll 20 is increased. .
- first roll 20 and the third and fifth rolls 24 and 28, which sandwich and join the first and second sheets 2 and 4 have the same outer diameter, and the same number of rotations Because it rotates at the same point always opposite each other, it is easy to get familiar. Therefore, it is possible to maintain a good bonding state between the first sheet 2 and the second sheet 4.
- the outer diameter of the 1st, 3rd and 5th rolls 20, 24 and 28 is the same size, and the portion where the 1st roll 20 and the 3rd and 5th rolls 24 and 28 mutually face each other is Since it is always the same, readjustment at the time of parts replacement is easy, and it is easy to maintain assembly accuracy. As a result, the quality of the manufactured composite sheet 6 can be kept constant.
- the composite sheet 6 of stable quality can be manufactured.
- Modification 2 the fourth roll 27 and the fifth roll 28 are not included in the configuration of the second embodiment.
- the second roll 23 and the third roll 24 may be arranged around the first roll 20 at an appropriate angle.
- the fifth to seventh steps are not included in the steps of manufacturing the composite sheet described above.
- the composite sheet As in the second embodiment, it is easy to manufacture the composite sheet at a higher speed, and a composite sheet of stable quality can be manufactured even if the composite sheet is manufactured at a higher speed.
- the apparatus and method for producing a composite sheet described above make it easy to produce a composite sheet at high speed, and produce a composite sheet of stable quality even when producing a composite sheet at high speed. be able to.
- the present invention is not limited to the above embodiment, and can be implemented with various modifications.
- first sheet 4 second sheet 6 composite sheet 10 composite sheet manufacturing apparatus 20 first roll 20 a recess 20 s first outer peripheral surface 22, 23 second roll 22 a first protrusion 22 s second outer periphery Surface 24 third roll 24s third outer peripheral surface 26, 27 fourth roll 26a second protrusion 26s fourth outer peripheral surface 28 fifth roll 28s fifth outer peripheral surface 30, 32, 33, 34, 36 , 37, 38 gears
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Abstract
Description
4 第2のシート
6 複合シート
10 複合シートの製造装置
20 第1のロール
20a 凹所
20s 第1の外周面
22,23 第2のロール
22a 第1の突起
22s 第2の外周面
24 第3のロール
24s 第3の外周面
26,27 第4のロール
26a 第2の突起
26s 第4の外周面
28 第5のロール
28s 第5の外周面
30,32,33,34,36,37,38 歯車
Claims (8)
- 第1の外周面と、前記第1の外周面から後退した複数個の凹所とを有する第1のロールと、
前記第1のロールと隣り合うように配置され、前記第1のロールと同期しながら回転し、前記第1のロールの前記第1の外周面に対向する第2の外周面と、前記第2の外周面から突出し、前記第1のロールの前記凹所との間に遊びのある状態で、前記第1のロールの前記凹所に出入りする複数個の第1の突起とを有する第2のロールと、
前記第1のロールと隣り合うように配置され、前記第1のロールと同期しながら回転し、前記第1のロールの前記第1の外周面に対向する第3の外周面を有する第3のロールと、
を備え、
第1のシートが、前記第1のロールと前記第2のロールとの間に供給され、前記第1のロールの前記第1の外周面に支持されながら搬送されて、前記第1のロールと前記第2のロールとの間を通過し、
前記第1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に、前記第2のロールの前記第1の突起が前記第1のシートを前記第1のロールの前記凹所に押し込んで、前記第1のシートを賦形し、
第2のシートが、賦形された前記第1のシートの上に重ね合わされ、前記第1のシートとともに搬送されて、前記第1のロールと前記第3のロールとの間を通過し、
前記第1のシートと前記第2のシートとが前記第1のロールと前記第3のロールとの間を通過するときに、前記第1のロールと前記第3のロールとが前記第1のシートと前記第2のシートとを挟み込んで、前記第1のシートと前記第2のシートとを互いに接合する、ように構成された複合シートの製造装置であって、
前記第1のロールと前記第3のロールとは、それぞれの外径が同じ大きさであり、
前記第3のロールは、前記第1のロールと同じ回転数で回転するように第1の歯車対を介して前記第1のロールに結合されていることを特徴とする、複合シートの製造装置。 - 前記第2のロールの外径は、前記第1のロールと前記第3のロールとのそれぞれの前記外径と同じ大きさであり、
前記第2のロールは、前記第1のロールと同じ回転数で回転するように第2の歯車対を介して前記第1のロールに結合されていることを特徴とする、請求項1に記載の複合シートの製造装置。 - 前記第1のロールと隣り合うように配置され、前記第1のロールと同期しながら回転し、前記第1のロールの前記第1の外周面に対向する第4の外周面と、前記第4の外周面から突出し、前記第1のロールの前記凹所との間に遊びのある状態で、前記第1のロールの前記凹所に出入りする第2の突起とを有する第4のロールと、
前記第1のロールと隣り合うように配置され、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第5の外周面を有する第5のロールと、
をさらに備え、
前記第1のロールと前記第3のロールとの間を通過して互いに接合された前記第1のシートと前記第2シートとが前記第1のロールの前記第1の外周面に支持されながら搬送され、前記第1のロールと前記第4のロールとの間を通過した後、前記第1のロールと前記第5のロールとの間を通過し、
前記第1のシートと前記第2シートとが前記第1のロールと前記第4のロールとの間を通過するときに、前記第4のロールの前記第2の突起が前記第2のシートを前記第1のロールの前記凹所に押し込んで、前記第2のシートを賦形し、
前記第1のシートと前記第2シートとが前記第1のロールと前記第5のロールとの間を通過するときに、前記第1のロールと前記第5のロールとが前記第1のシートと前記第2のシートとを挟み込んで、前記第1のシートと前記第2のシートとの互いの接合を強化する、ように構成され、
前記第5のロールの外径が、前記第1のロールと前記第3のロールとのそれぞれの前記外径と同じ大きさであり、
前記第5のロールは、前記第1のロールと同じ回転数で回転するように第3の歯車対を介して前記第1のロールに結合されていることを特徴とする、請求項1又は2に記載の複合シートの製造装置。 - 前記第4のロールの外径が、前記第1のロールと前記第3のロールとのそれぞれの前記外径と同じ大きさであり、
前記第4のロールは、前記第1のロールと同じ回転数で回転するように第4の歯車対を介して前記第1のロールに結合されていることを特徴とする、請求項3に記載の複合シートの製造装置。 - 外周面に前記第1の外周面から後退した複数個の凹所が形成された第1のロールと隣り合うように、第1の突起を有する第2のロールと、第3のロールとを配置し、前記第1のロールと前記第2のロール及び前記第3のロールとを互いに同期させながら回転させ、前記第2のロールの前記第1の突起を、前記第1のロールの前記凹所との間に遊びのある状態で、前記第1のロールの前記凹所に出入させる第1の工程と、
第1のシートを、回転している前記第1のロールと前記第2のロールとの間に供給し、前記第1のロールの前記外周面で支持しながら搬送して、前記第1のロールと前記第2のロールとの間を通過させ、
前記第1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に、前記第2のロールの前記第1の突起で前記第1のシートを前記第1のロールの前記凹所に押し込んで、前記第1のシートを賦形する第2の工程と、
第2のシートを、賦形された前記第1のシートの上に重ね合わせ、前記第1のシートとともに搬送して、前記第1のロールと前記第3のロールとの間を通過させ、
前記第1のシートと前記第2のシートとが前記第1のロールと前記第3のロールとの間を通過するときに、前記第1のロールと前記第3のロールとで前記第1のシートと前記第2のシートとを挟み込んで、前記第1のシートと前記第2のシートとを互いに接合する第3の工程と、
を備え、
前記第1の工程において、前記第1のロールと前記第3のロールとのそれぞれの外径を同じ大きさとし、前記第3のロールを第1の歯車対を介して前記第1のロールに結合して、前記第3のロールを、前記第1のロールと同じ回転数で回転させることを特徴とする、複合シートの製造方法。 - 前記第1の工程において、前記第2のロールの外径は、前記第1のロールと前記第3のロールとのそれぞれの前記外径と同じ大きさとし、前記第2のロールを第2の歯車対を介して前記第1のロールに結合して、前記第2のロールを、前記第1のロールと同じ回転数で回転させることを特徴とする、請求項5に記載の複合シートの製造方法。
- 前記第1のロールと隣り合うように、第2の突起を有する第4のロールと、第5のロールとを配置し、前記第4のロールと前記第5のロールとを、前記第1のロールと同期させながら回転させ、前記第4のロールの前記第2の突起を、前記第1のロールの前記凹所との間に遊びのある状態で、前記第1のロールの前記凹所に出入させる第4の工程と、
前記第1のロールと前記第3のロールとの間を通過させて互いに接合した前記第1のシートと前記第2シートとを、前記第1のロールの前記外周面で支持しながら搬送し、前記第1のロールと前記第4のロールとの間を通過させた後、前記第1のロールと前記第5のロールとの間を通過させる第5の工程と、
前記第1のシートと前記第2シートとが前記第1のロールと前記第4のロールとの間を通過するときに、前記第4のロールの前記第2の突起で前記第2のシートを前記第1のロールの前記凹所に押し込んで、前記第2のシートを賦形する第6の工程と、
前記第1のシートと前記第2シートとが前記第1のロールと前記第5のロールとの間を通過するときに、前記第1のロールと前記第5のロールとで前記第1のシートと前記第2のシートとを挟み込んで、前記第1のシートと前記第2のシートとの互いの接合を強化する第7の工程と、
をさらに備え、
前記第4の工程において、前記第5のロールの外径を、前記第1のロールと前記第3のロールとのそれぞれの前記外径と同じ大きさとし、前記第5のロールを第3の歯車対を介して前記第1のロールに結合して、前記第5のロールを、前記第1のロールと同じ回転数で回転させることを特徴とする、請求項5又は6に記載の複合シートの製造方法。 - 前記第4の工程において、前記第4のロールの外径を、前記第1のロールと前記第3のロールとのそれぞれの前記外径と同じ大きさとし、前記第4のロールを第4の歯車対を介して前記第1のロールに結合して、前記第4のロールを、前記第1のロールと同じ回転数で回転させ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。
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