WO2015056535A1 - 吸収性物品の製造装置、及び製造装置の改造方法 - Google Patents
吸収性物品の製造装置、及び製造装置の改造方法 Download PDFInfo
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- WO2015056535A1 WO2015056535A1 PCT/JP2014/075115 JP2014075115W WO2015056535A1 WO 2015056535 A1 WO2015056535 A1 WO 2015056535A1 JP 2014075115 W JP2014075115 W JP 2014075115W WO 2015056535 A1 WO2015056535 A1 WO 2015056535A1
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- Prior art keywords
- woven fabric
- heating unit
- absorbent article
- transport
- path
- Prior art date
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Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
-
- 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
- A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
- A61F13/15731—Treating webs, e.g. for giving them a fibrelike appearance, e.g. by embossing
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/015—Floor coverings, e.g. bedding-down sheets ; Stable floors
- A01K1/0157—Mats; Sheets
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/01—Removal of dung or urine, e.g. from stables
- A01K1/0107—Cat trays; Dog urinals; Toilets for pets
-
- 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
- A61F13/15203—Properties of the article, e.g. stiffness or absorbency
-
- 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
- A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
Definitions
- the present invention relates to an apparatus for manufacturing an absorbent article such as a pet sheet and a method for modifying the apparatus.
- sanitary napkins and disposable diapers are used as absorbent articles.
- pet sheets included in the same category are also popular as toilets for pets.
- a liquid-permeable top sheet is provided in a portion where the skin of the user or the like hits.
- the top sheet is required to have high liquid removability from the viewpoint of reducing stickiness to the skin and the like, and a bulky non-woven fabric is considered to be suitable as the material.
- the non-woven fabric is manufactured in a strip shape by an appropriate method such as a card method, and thereafter wound in a roll and stored in the form of a non-woven fabric. Then, when it is time to use, the non-woven fabric raw material is carried into the production line of the absorbent article, and the non-woven fabric is unwound from the same fabric at the same line and used as a top sheet material.
- the non-woven fabric when winding the non-woven fabric around the non-woven fabric raw fabric, the non-woven fabric is wound while applying tension in the winding direction in order to prevent meandering of the non-woven fabric. Therefore, the non-woven fabric is usually tightened due to the tension. That is, the non-woven fabric is compressed in the thickness direction to reduce its bulk. Therefore, even if the nonwoven fabric is fed from the nonwoven fabric in the production line of the absorbent article, the bulk reduced nonwoven fabric is only fed out and supplied, that is, the above-mentioned bulky nonwoven fabric can not be met. .
- Patent Document 1 discloses that a bulk recovery apparatus be installed upstream of a production line of absorbent articles. Specifically, it is disclosed that when the nonwoven fabric drawn from the nonwoven fabric passes through a predetermined transport path, hot air is blown and heated by the bulk recovery device, thereby recovering the bulk of the nonwoven fabric. Also, it is disclosed that the non-woven fabric after the heating is sent as it is to the next treatment device of the same production line without being wound up.
- the production line has, besides the bulk recovery device, a plurality of processing devices for producing the absorbent article, and in these processing devices, an intermediate product such as an absorbent for the absorbent article is conveyed Are arranged along the first transport path.
- the first transport path is arranged in a straight line along a predetermined first direction in a plan view.
- the heating unit of the bulk recovery apparatus heats the non-woven fabric to recover the bulk
- the heating unit itself is also at a high temperature, and heat can be emitted toward the surroundings.
- the intermediate product and the processing device of the first transport path may be thermally affected, which may cause trouble. That is, the ambient air heated by the heat emitted by the heating unit rises based on the decrease in specific gravity. Therefore, if the heating unit is disposed immediately below the first conveyance path, the heated air rises toward the intermediate product and the processing device of the first conveyance path located immediately above the heating unit, The intermediate product and the processing apparatus may be heated, which may cause troubles.
- the present invention has been made in view of the conventional problems as described above, and its object is to provide an intermediate product and a processing apparatus for the thermal influence of the heating unit for recovering the bulk of the non-woven fabric related to the absorbent article. The thing is to prevent effectively.
- the main invention to achieve the above object is A first transport path disposed in a straight line along the first direction in plan view; A plurality of processing devices that process intermediate products related to the absorbent article transported along the first transport path; A heating unit configured to heat the non-woven fabric by blowing hot air to the non-woven fabric while conveying a strip-like non-woven fabric to be a component of the absorbent article in a continuous direction of the non-woven fabric; And When a direction intersecting with the first direction in plan view is a second direction, The apparatus is a manufacturing apparatus of an absorbent article, wherein the heating unit is disposed at a position immediately above the first conveyance path or a position deviated from the first conveyance path in the second direction.
- An absorbent article is manufactured by processing an intermediate product of an absorbent article conveyed along a first conveyance path arranged in a straight line along a first direction in plan view with a plurality of processing devices. How to modify the device, Setting a direction intersecting with the first direction in plan view as a second direction; A heating unit for recovering the bulk of the non-woven fabric by heating the non-woven fabric by blowing hot air onto the non-woven fabric while conveying a strip-like non-woven fabric to be a component of the absorbent article in a continuous direction of the non-woven fabric; (1) A method of manufacturing an absorbent article according to the present invention, comprising: disposing at a position immediately above the transport path or at a position displaced from the first transport path in the second direction.
- the present invention it is possible to effectively prevent the thermal influence of the heating unit for recovering the bulk of the non-woven fabric from affecting the intermediate product and the processing device related to the absorbent article.
- FIG. 1A is an external perspective view of the pet sheet 1, and FIG. 1B is an enlarged perspective view of the same sheet 1 cut along the line BB in FIG. 1A.
- FIG. 1 is a schematic side view of a production line 10 for producing a pet sheet 1; It is an III-III arrow line view in FIG. It is the schematic plan view which looked at the subline 30 for top sheets 3a from upper direction. It is the schematic side view which connected and showed the AA arrow view in FIG. 4, and the BB arrow view in FIG.
- FIG. 6A is a schematic side view of the bulk recovery apparatus 60
- FIG. 6B is a cross-sectional view taken along the line BB in FIG. 6A.
- FIG. 10 It is a VIII-VIII arrow line view in FIG. 10 is a schematic cross-sectional view of a cooling unit 71 additionally provided immediately downstream of the heating unit 61.
- FIG. FIG. 18 is a schematic cross-sectional view of a configuration in which the hot air having flowed in forward and backward spaces SP62a and SP62b in the heating unit 61 is collected and returned to the suction side portion 67bs of the blower 67b.
- FIG. 6 is a schematic side view of an absorber manufacturing apparatus 111.
- a first transport path disposed in a straight line along the first direction in plan view;
- a plurality of processing devices that process intermediate products related to the absorbent article transported along the first transport path;
- a heating unit configured to heat the non-woven fabric by blowing hot air to the non-woven fabric while conveying a strip-like non-woven fabric to be a component of the absorbent article in a continuous direction of the non-woven fabric;
- the apparatus is a manufacturing apparatus of an absorbent article, wherein the heating unit is disposed at a position immediately above the first conveyance path or a position deviated from the first conveyance path in the second direction.
- the heating unit is disposed at a position immediately above the first transport path or a position shifted in the second direction from the first transport path.
- the thermal influence of the heating unit is effectively prevented from affecting the intermediate products and the processing equipment. That is, although the air heated by the heat emitted from the heating unit rises based on the reduction of the specific gravity thereof, here, the first transport path is not present immediately above the heating unit. Therefore, it is possible to suppress the thermal influence that such heated air may have on the intermediate product and the processing device of the first conveyance path.
- the heating unit is disposed at a position shifted from the first conveyance path in the second direction, It is preferable that the non-woven fabric which has been heated by the heating unit and the bulk has been recovered is transported in the second direction by the second transport path and is introduced into the first transport path.
- the nonwoven fabric heated by the heating unit and recovered in bulk is cooled while being transported in the second direction by the above-described second transport path. Therefore, the thermal influence of the heated non-woven fabric on the intermediate product and the processing device of the first conveyance path is effectively prevented.
- an empty space remains at a position shifted in the second direction from the first transport path in plan view. Therefore, for example, when adding a heating unit to a manufacturing apparatus of the existing absorptive article by remodeling construction, the space for installation of a heating unit can be secured easily.
- the heating unit is disposed immediately above the first transport path, As for the conveyance path of the nonwoven fabric in the heating unit, it is desirable to be along the horizontal direction.
- the manufacturing apparatus of such an absorbent article since the conveyance path of the nonwoven fabric in a heating unit is along the horizontal direction, the size of the heating unit in the vertical direction can be reduced. And thereby, it becomes possible to avoid the trouble that may occur due to the heating unit being disposed immediately above the first conveyance path. For example, when the dimension in the vertical direction of the heating unit is large, it easily interferes with the existing installation object such as an appropriate duct located above the first conveyance path, but according to the above configuration, the upper and lower sides of the heating unit Since the size of the direction can be reduced, interference with the existing installation above can be avoided.
- the heating unit has a case member having an inlet for the non-woven fabric and an outlet for the non-woven fabric, One of the part on the inlet side and the part on the outlet side of the case member has an injection port for injecting the hot air into the space in the case member toward the other, It is desirable that the other has a discharge port for discharging the hot air flowing from the case member while flowing in contact with one of the two surfaces of the non-woven fabric.
- the hot air is jetted from the jet port so as to flow from one to the other in the transport direction, and while flowing from one to the other, the hot air is one of both surfaces of the non-woven fabric.
- the nonwoven fabric is heated while being in contact with the surface of the nonwoven fabric.
- the bulk of the non-woven fabric can be reliably recovered.
- a cooling unit configured to cool the non-woven fabric heated by the hot air before being introduced into the first conveyance path;
- the cooling unit has a case member having an inlet for the non-woven fabric and an outlet for the non-woven fabric, One of the part on the inlet side and the part on the outlet side of the case member has an injection port for injecting a cooling air into the space in the case member toward the other, It is desirable that the other has a discharge port for discharging the air flowing from the case member while flowing in contact with one of the both surfaces of the non-woven fabric.
- the cooling unit cools the non-woven fabric heated by the hot air.
- the cooling unit cools the non-woven fabric heated by the hot air.
- the cooling air is jetted from the injection port so as to flow from one side to the other in the transport direction, and while flowing from one side to the other, the wind is in contact with one side of both sides of the non-woven fabric , Cool the non-woven fabric.
- the non-woven fabric can be reliably cooled.
- An absorbent article is manufactured by processing an intermediate product of an absorbent article conveyed along a first conveyance path arranged in a straight line along a first direction in plan view with a plurality of processing devices. How to modify the device, Setting a direction intersecting with the first direction in plan view as a second direction; A heating unit for recovering the bulk of the non-woven fabric by heating the non-woven fabric by blowing hot air onto the non-woven fabric while conveying a strip-like non-woven fabric to be a component of the absorbent article in a continuous direction of the non-woven fabric; (1) A method of manufacturing an absorbent article according to the present invention, comprising: disposing at a position immediately above the transport path or at a position displaced from the first transport path in the second direction.
- the heating unit is disposed at a position immediately above the first transport path or a position shifted in the second direction from the first transport path. Therefore, the manufacturing apparatus can be remodeled to a specification in which the thermal influence of the heating unit is less likely to reach the intermediate product and the processing apparatus of the first transport path. That is, the air heated by the heat emitted by the heating unit rises based on the decrease in specific gravity, but here, the manufacturing apparatus is remodeled so that the first conveyance path does not exist above the heating unit. Be done. Therefore, even in the modified manufacturing apparatus, the intermediate products and the processing apparatus of the first transport path are prevented from being thermally affected.
- the manufacturing apparatus 10 of the absorbent article of 1st Embodiment manufactures the pet sheet 1 as an example of an absorbent article.
- FIG. 1A is an external perspective view of the pet sheet 1
- FIG. 1B is an enlarged perspective view of the same sheet 1 cut along the line BB in FIG. 1A.
- the pet sheet 1 is used for excretion treatment of animals such as dogs and cats, and is used by being laid on a floor or the like as shown in FIG. 1A.
- the pet sheet 1 is, for example, a liquid-permeable top sheet 3 having a rectangular shape in plan view, a liquid-impermeable back sheet 5 having substantially the same shape, and liquid absorption interposed between the sheets 3 and 5.
- a sex absorbent body 4 The absorbent body 4 is joined to both the top sheet 3 and the back sheet 5 with a hot melt adhesive, and the top sheet 3 and the back sheet 5 protrude laterally from the absorbent body 4, that is, The outer peripheral portions 3e and 5e of the respective sheets 3 and 5 are joined by a hot melt adhesive.
- the hot melt adhesive as referred to herein is a thermoplastic adhesive which is melted by heating and can be applied in a fluid state.
- the absorbent core 4 includes, for example, an absorbent core 4c formed by laminating a liquid absorbent fiber such as pulp fiber and a super absorbent polymer (so-called SAP) in a substantially rectangular shape in plan view, And 4c.
- the covering sheet is, for example, a liquid-permeable sheet such as tissue paper, and in this example, two covering sheets 4t1 and 4t2 are provided. That is, it is covered with one covering sheet 4t1 from the skin side, and is covered with another covering sheet 4t2 from the non-skin side.
- cover sheet 4t1 covering from the skin side of the former is referred to as “skin side cover sheet 4t1"
- non-skin side cover sheet 4t2 the cover sheet 4t2 covering from the non-skin side of the latter.
- both the skin side and the non-skin side may be covered with a single covering sheet, and in some cases, these covering sheets 4t1 and 4t2 may be omitted.
- the back sheet 5 is, for example, a film material such as polyethylene (hereinafter, PE), polypropylene (hereinafter, PP), and polyethylene terephthalate (hereinafter, PET).
- PE polyethylene
- PP polypropylene
- PET polyethylene terephthalate
- the sheet is not limited to these, and any sheet impermeable to liquid can be used.
- the top sheet 3 is made of the non-woven fabric 3.
- one surface 3sb of both surfaces 3sa and 3sb of the nonwoven fabric 3 is a substantially flat surface, while the other surface 3sa has a corrugated shape. That is, linear grooves 3t and linear projections 3p are alternately formed.
- the protruding portion 3p is formed by blowing the fiber originally existing in the groove portion 3t sideways and raising it by a well-known air flow blowing process (refer to JP-A 2009-11179 and the like).
- the inter-fiber gap is formed in a large sparse state. And thereby, the said nonwoven fabric 3 is bulky as a whole.
- a plurality of through holes 3h, 3h,... Penetrating in the thickness direction may be formed in the groove 3t, and in this example, this is the case.
- the average basis weight of the non-woven fabric 3 is, for example, 10 to 200 (g / m 2 ), and the average basis weight of the central portion of the protrusion 3 p is, for example, 15 to 250 (g / m 2 ).
- the average basis weight of the bottom is 3 to 150 (g / m 2 ).
- thermoplastic resin fibers other than this may be used.
- it may be a composite fiber of core-sheath structure with a core of PP and a sheath of PE, or a fiber with a side-by-side structure, or a single fiber made of a single thermoplastic resin.
- the nonwoven fabric 3 may have crimped fibers.
- the crimped fiber is a fiber having a crimped shape such as a zigzag shape, an ⁇ shape, or a spiral shape.
- the fiber length of the fibers contained in the non-woven fabric 3 is selected, for example, from the range of 20 to 100 mm, and the fineness is selected, for example, from the range of 1.1 to 8.8 (dtex).
- FIG. 2 is a schematic side view of a production line 10 for producing such a pet sheet 1.
- FIG. 3 is a view on arrow III-III in FIG.
- the production line 10 of the pet sheet 1 has a main line 11 and a plurality of sub lines 30 and 90.
- the main line 11 conveys the absorbent body 4 as an intermediate product 1m, which is the main part of the pet sheet 1, and to the same absorbent body 4 of the parts 3a and 5a supplied from the respective sublines 30 and 90.
- each of the sub lines 30 and 90 basically, the corresponding components 3a and 5a are subjected to the pretreatment.
- the parts 3a and 5a are a continuous sheet 3a of the top sheet 3 (hereinafter simply referred to as the top sheet 3a) and a continuous sheet 5a of the back sheet 5 (hereinafter simply referred to as the back sheet 5a)
- the pretreatment is, for example, application of a hot melt adhesive to the top sheet 3a or the back sheet 5a, bulk recovery processing of the non-woven fabric 3a to be the material of the top sheet 3a, or the like. Therefore, in this example, the subline 30 for the top sheet 3 a and the subline 90 for the back sheet 5 a are provided as the sub lines 30 and 90.
- the main line 11, the subline 30 for the top sheet 3a, and the subline 90 for the back sheet 5a will be described.
- the three directions orthogonal to each other in the manufacturing line 10 will be referred to as the X direction, the Y direction, and the Z direction, respectively.
- the X direction and the Y direction are directed in the horizontal direction, but as shown in FIG. 2, the Z direction is directed in the vertical direction.
- the X direction and the Y direction are orthogonal to each other, and the X direction corresponds to the “first direction” according to the claims, and the Y direction relates to the claims. This corresponds to the “second direction”.
- the main line 11 has a straight conveyance path R11 along the X direction in plan view. That is, when the main line 11 is viewed from the upper side in the vertical direction with a line of sight parallel to the vertical direction, there is a straight conveyance path R11 (corresponding to the first conveyance path) along the X direction (corresponding to the first direction). doing.
- the conveyance route R11 is referred to as "main conveyance route R11."
- a suitable transport device such as a transport conveyor 12CV or transport roller 12R is provided for transporting the intermediate product 1m related to the pet sheet 1 such as the absorber 4 or the continuum 1a of pet sheets 1. It is done.
- the conveyance conveyor 12CV has a basic configuration in which the outer circumferential surface of the endless belt which drives and circulates is a conveyance surface.
- the intermediate product 1m may be conveyed while being adsorbed by attaching the suction function to the same conveyance surface, or the two endless belts may be disposed to face each other in the vertical direction.
- the intermediate product 1 m may be conveyed while being slightly pinched with each other.
- the transport roller 12R may be a drive roller that is driven to rotate by obtaining a rotational force from an appropriate drive source such as a servomotor or may obtain a rotational force by contact with the intermediate product 1m to be transported. It may be a driven roller which rotates.
- the respective devices 14, 15, 16, 17, 18 (corresponding to processing devices) belonging to the main line 11 including the transport devices 12CV and 12R are appropriate supporting members (not shown) provided on the manufacturing line 10. Supported on the same line 10.
- a so-called mirror plate (not shown) is used as an example of the support member.
- the end plate is a plate member vertically erected on the floor portion 10b of the manufacturing line 10, and the end plate has a vertical surface (surface in which the normal direction is directed in the horizontal direction), and each device in the vertical surface ..
- the normal direction of the vertical plane is in the Y direction, and in FIG. 2, the Y direction is in the direction of penetrating the sheet of FIG. 2.
- such a supporting member is not limited to any mirror plate, and other supporting members may be used.
- each absorber 4 may change the position in the Z direction (vertical direction) according to the position in the X direction.
- the top sheet 3a (corresponding to a part) is introduced from the subline 30 for the top sheet 3a at a predetermined position in the X direction into the main transport path R11, and the subline 90 for the backsheet 5a at the same predetermined position.
- the back sheet 5a is thrown in from.
- the joining apparatus 14 is arrange
- the bonding device 14 has a pair of upper and lower rolls 14a and 14b that are driven to rotate about a rotation axis along the Y direction.
- the drive source of the pair of rolls 14a and 14b is, for example, a servomotor.
- a pair of rolls 14a and 14b rotate so that the absorber 4 may be sent out to the downstream of a X direction by the said motor, making each outer peripheral surface oppose.
- the peripheral speed values V14a and V14b of the rolls 14a and 14b are controlled in conjunction with each other so as to be substantially the same as the transfer speed value V4 of the absorber 4 on the main transfer path R11.
- the top sheet 3 a introduced from the subline 30 for the top sheet 3 a is wound around the upper roll 14 a of the pair of upper and lower rolls 14 a and 14 b of the joining device 14 while being wound around the pair of rolls 14 a.
- the back sheet 5a introduced from the subline 90 for the back sheet 5a is wound around the lower roll 14b of the pair of upper and lower rolls 14a, 14b while being wound around the pair of rolls 14a, 14b, It is sent in between 14b.
- the three members, the top sheet 3a, the absorbent body 4 and the back sheet 5a pass together between the pair of rolls 14a and 14b, and in that case, are pinched by the pair of rolls 14a and 14b, These three parties 3a, 4 and 5a are joined. And thereby, the continuous body 1a of the pet sheet 1 is manufactured as 1 m of intermediate products in which the form changed from the absorber 4. Moreover, as shown in FIG.
- the hot melt adhesive is applied to the top sheet 3a and the back sheet 5a, respectively, in order to use for the above bonding. This will be described later.
- three pressing devices 15, 16, 17 are used for the purpose of making such bonding more reliable.
- the 1st press apparatus 15 is what is called a light press apparatus, and presses the substantially whole surface of the continuous body 1a of the pet sheet 1 very lightly.
- the second press device 16 is a so-called end press device, and in the continuous body 1a of the pet sheet 1, a portion without the absorber 4 which is a portion between the absorbers 4 and 4 adjacent in the transport direction Selectively press.
- the final third pressing device 17 is a so-called side edge pressing device, and selectively presses portions of the continuous body 1a of the pet sheet 1 where there are no absorbers 4 which are both end portions in the Y direction.
- the light pressing device 15 a device having a pair of upper and lower rolls 15a and 15b which rotate with their smooth outer peripheral surfaces facing each other can be exemplified.
- the end press apparatus 16 and the side edge press apparatus 17 the following apparatuses can be illustrated, respectively.
- the end press device 16 has a pair of upper and lower rolls 16a and 16b that rotate with the outer peripheral surfaces facing each other, and the outer peripheral surface of at least one of the pair of rolls 16a and 16b has the above-described
- the protrusions 16 ap and 16 ap are provided corresponding to the portions between the absorbers 4 and 4.
- the side edge press device 17 has a pair of rolls 17a and 17b that rotate with the outer circumferential surfaces facing each other, and at least one of the upper and lower rolls 17a and 17b has an outer circumferential surface.
- a pair of annular projections 17 ap and 17 ap are respectively provided at both ends in the Y direction in the above, and the projections 17 ap and 17 ap allow the absorber 4 to be both ends in the Y direction of the continuous body 1 a of the pet sheet 1.
- a rotary cutter device 18 is provided at a position downstream of the side edge press device 17 in the main conveyance path R ⁇ b> 11. Then, the continuous body 1 a of the pet sheet 1 pressed by the side edge pressing device 17 passes through the rotary cutter device 18.
- the rotary cutter device 18 (corresponding to a processing device) has a pair of upper and lower rolls 18a and 18b. Each of the rolls 18a and 18b rotates about the rotation axis along the Y direction, and thereby rotates so as to feed the continuum 1a of the pet sheet 1 downstream in the X direction.
- the drive source of rotation is a servomotor.
- one roll 18a of the pair of upper and lower rolls 18a and 18b is a cutter blade roll 18a having a cutter blade 18c on the outer peripheral surface
- the other roll 18b is a cutter blade 18c on the smooth outer peripheral surface.
- Anvil roll 18b that receives the And, when a portion between the absorbers 4 and 4 in the continuum 1a of the pet sheet 1 passes between the rolls 18a and 18b, the cutter blade 18c of the cutter blade roll 18a is on that portion.
- the continuum 1a is cut by hitting, whereby the pet sheet 1 is manufactured.
- FIG. 4 is a schematic plan view of the subline 30 for the top sheet 3a as viewed from above, and FIG. 5 is a view taken along arrows AA in FIG. 4 and a view taken along arrows BB in FIG. It is the schematic side view shown connected.
- the sub-line 30 for the top sheet 3a is provided with a transport device 31 for delivering the non-woven fabric 3a serving as the material of the top sheet 3a from the non-woven fabric raw fabric 3aR and transporting it to the main transport path R11.
- a bulk recovery device 60 for recovering the bulk of the non-woven fabric 3a by heating the non-woven fabric 3a drawn from the non-woven fabric raw fabric 3aR and bonding for applying the above-mentioned hot melt adhesive for bonding to the non-woven fabric 3a And agent applying devices 81 and 82.
- the top sheet 3a is simply referred to as "non-woven fabric 3a".
- the heating unit 61 forming the main part of the bulk recovery device 60 extends from the main conveyance path R11 of the main line 11 to the Y direction. It is disposed at a position shifted to (corresponding to the second direction). That is, when viewed in a plan view, the heating unit 61 is disposed at a position not overlapping the main conveyance path R11 of the main line 11 described above.
- the heating unit 61 is disposed at a position deviated from the main conveyance path R11 of the main line 11 in the Y direction. Therefore, before introducing the non-woven fabric 3a heated by the heating unit 61 into the main transfer route R11 of the main line 11, the transfer route R31Yd (to the second transfer route) transfers the high-temperature non-woven fabric 3a along the Y direction. Corresponding), whereby the high temperature non-woven fabric 3a can be naturally cooled while passing through the transport route R31Yd.
- the temperature-reduced nonwoven fabric 3a can be introduced into the main conveyance route R11, whereby the thermal influence of the nonwoven fabric 3a affects the intermediate product 1m of the main conveyance route R11 and the respective devices 14, 15. Is also effectively prevented.
- an empty space remains at a position shifted in the Y direction from the main conveyance path R11 in plan view. Therefore, for example, when adding the bulk recovery apparatus 60 to the existing manufacturing line 10, the installation space for the heating unit 61 can be easily secured.
- the heating unit 61 of the bulk recovery device 60 is disposed at a position deviated from the main conveyance path R11 in the Y direction” is “when viewed in plan, that is, viewed from above In this case, this means that the heating unit 61 is disposed at a position such that a part of the heating unit 61 does not overlap the main transport path R11. More specifically, this means that the heating unit 61 is disposed at a position such that a part of the heating unit 61 does not overlap with the movement locus R11 of the intermediate product 1m.
- the transport device 31 has two types of transport paths R31X and R31Y as a transport path of the nonwoven fabric 3a. That is, as the transfer route, a Y-direction transfer route R31Y for transferring the non-woven fabric 3a along a Y direction in plan view and an X-direction transfer route R31X for transferring a non-woven fabric 3a along a X direction in plan view have.
- the Y-direction transport path R31Y is located upstream of the X-direction transport path R31X in the transport direction. Therefore, the nonwoven fabric 3a drawn out from the nonwoven fabric raw fabric 3aR first passes the Y-direction transport path R31Y.
- the transport direction of the nonwoven fabric 3a is converted from the Y direction to the X direction, whereby the nonwoven fabric 3a is transported in the X-direction. Get into R31X.
- the X-direction transport route R31X when the X-direction transport route R31X is viewed in a plan view, the X-direction transport route R31X overlaps the main transport route R11 of the main line 11 over substantially the entire length thereof. Therefore, it passes through the X-direction transport route R31X to reach a position immediately above the bonding device 41 of the main transport route R11 (FIG. 2), and in that position, the non-woven fabric 3a promptly passes from above the main transport route R11. Input to R11.
- the above-mentioned 45 ° turn bar TB is, for example, a cylindrical rod member having a smooth outer peripheral surface, such as a metal polishing rod made of stainless steel or the like, or a round rod having improved slipperiness of the outer peripheral surface by surface treatment. It is produced as a material.
- the direction of central axis CTB which penetrates the circle which is the cross-sectional center of the said turn bar TB has faced the middle direction of the X direction and the Y direction in the horizontal surface. Therefore, the nonwoven fabric 3a is wound around the outer peripheral surface of the turn bar TB, and the nonwoven fabric 3a slides on the outer peripheral surface, whereby the transport direction of the nonwoven fabric 3a is rapidly converted from the Y direction to the X direction.
- the two types of transport paths R31X and R31Y are respectively formed by a plurality of transport rollers 32X, 32X,..., 32Y, 32Y,.
- the Y-direction transport roller 32Y that forms the Y-direction transport path R31Y is rotatably supported about the rotation axis along the X direction, whereby the non-woven fabric 3a is oriented such that its width direction is in the X direction In the Y direction.
- the X-direction transport roller 32X which forms the X-direction transport path R31X, is rotatably supported about the rotation axis along the Y direction, whereby the nonwoven fabric 3a has its width direction oriented in the Y direction. In the X direction.
- the Y-direction transport path R31Y includes the delivery devices 35 and 35, the material joining device 36, the accumulator device 37, and the upstream pinch roll device 38, from the upstream side to the downstream side in the transport direction. It has side by side in this order.
- the X-direction transport path R31X includes a tension control device 39 and a downstream pinch roll device 41 in this order from the upstream side to the downstream side in the transport direction.
- Adhesive application devices 81 and 82 are provided on the downstream side of the downstream pinch roll device 41 in the X-direction transport path R31X in order to apply the adhesive to the non-woven fabric 3a.
- each of the devices 39, 41 belonging to the X-direction transport route R31X, including the X-direction transport rollers 32X, 32X,..., Is supported by the above-mentioned end plate that supports the respective devices 14, 15 ... of the main transport route R11.
- the devices 35, 35, 36, 37, 38 belonging to the Y-direction transport path R31Y, including the Y-direction transport rollers 32Y, 32Y,... are supported by supporting members other than the end plate of the main transport path R11 described above. It is supported.
- Such a support member (not shown) is, for example, an end plate disposed on the floor 10 b of the manufacturing line 10 along the Y direction, and has a vertical surface with the normal direction facing the X direction.
- the respective devices 35, 35, 36, 37, 38 belonging to the Y-direction transport path R31Y are supported, for example, in a cantilever state on the vertical surface.
- the delivery device 35 is a device that forms an end of the Y-direction transport path R31Y, that is, the non-woven fabric 3a is delivered from the non-woven fabric raw fabric 3aR along the Y-direction transport path R31Y. Therefore, it has a rotating shaft along the X direction, and the nonwoven fabric raw fabric 3aR is rotatably supported on the rotating shaft.
- the rotation shaft is driven and rotated by, for example, a servomotor (not shown) as a drive source, and thereby the nonwoven fabric 3a is unwound from the nonwoven fabric raw fabric 3aR.
- the servomotor performs a feeding operation in cooperation with the accumulator device 37. This will be described later.
- Two such delivery devices 35, 35 are provided as a plurality of examples. And basically, it is switched and used alternately. That is, while one delivery device 35 is delivering the non-woven fabric 3a, the other delivery device 35 is in the standby state, and when the non-woven fabric fabric 3aR of one delivery device 35 is exhausted, the delivery device 35 in the standby state. Are configured to start the feeding of the non-woven fabric 3a. In addition, since this delivery apparatus 35 is known, it abbreviate
- the material bonding device 36 is also a device provided in the Y-direction transport path R31Y. Then, the material bonding device 36 feeds the tail end 3aee of the non-woven fabric 3a of the original fabric 3aR a little while waiting for the non-woven fabric 3aR of the non-woven fabric 3aR to finish delivering the nonwoven fabric 3a of the non-woven fabric 3aR. It is joined to the tip 3 aes of the nonwoven fabric 3 a of the nonwoven fabric raw fabric 3 aR attached to the device 35. And thereby, nonwoven fabric 3a can be drawn out continuously without interruption. In addition, since this material bonding apparatus 36 is also known, the detailed description thereof will be omitted.
- the accumulator device 37 is also a device provided in the Y-direction transport path R31Y, and accumulates the non-woven fabric 3a fed out from the delivery device 35 so as to be able to be discharged downstream in the transport direction. Then, when the non-woven fabric 3a is not fed out from the feeding device 35 as in the case of the bonding process by the material bonding device 36 described above, the non-woven fabric 3a accumulated in the accumulator device 37 itself is discharged downstream. Do not have the influence of 35 feed stop downstream. It should be noted that, when the feeding stop of the feeding device 35 is released, the feeding device 35 sets the transfer speed value (m / min) of the non-woven fabric 3a at the position immediately downstream of the accumulator device 37 until reaching the prescribed accumulation amount. The non-woven fabric 3a is fed out at a high speed value (m / min), whereby the non-woven fabric 3a of the portion paid out while the feeding is stopped is accumulated in the accumulator device 37.
- the accumulator device 37 comprises a fixed roller group G37s consisting of a plurality of rollers 37s, 37s... Fixed at a fixed position, and a plurality of rollers 37m, 37m. And a movable roller group G37m.
- the non-woven fabric 3a is alternately wound around each roller 37s belonging to the fixed roller group G37s and each roller 37m belonging to the movable roller group G37m, thereby forming a loop L3a of the non-woven fabric 3a to form the non-woven fabric 3a. Accumulate.
- the movable roller group G37m reciprocates in the vertical direction in accordance with the magnitude (N) of the tension of the non-woven fabric 3a. That is, when the magnitude of the tension of the non-woven fabric 3a is larger than the preset tension setting value (N), the movable roller group G37m moves so as to reduce the loop L3a, thereby accumulating The non-woven fabric 3a is dispensed and supplied downstream. On the other hand, when the magnitude of the tension of the non-woven fabric 3a is smaller than the above-mentioned set value, the loop L3a is moved so as to be large, whereby the non-woven fabric 3a is accumulated.
- the accumulator device 37 is similar to the tension control device 39 described later. It also plays the function of Since such an accumulator device 37 is also well known, further detailed description will be omitted.
- the upstream pinch roll device 38 is also a device provided in the Y-direction transport path R31Y, and feeds the nonwoven fabric 3a to the heating unit 61 of the bulk recovery device 60.
- a drive roll having a pair of rolls 38a and 38b disposed with their outer peripheral surfaces facing each other, at least one of the rolls 38a and 38b being driven and rotated by a servomotor (not shown) as a drive source 38a (38b). Then, the non-woven fabric 3a is sent out to the heating unit 61 by this driving rotation.
- the drive roll 38 a (38 b) is driven to rotate in conjunction with a drive roll 39 k of a tension control device 39 located downstream of the heating unit 61 in the transport direction.
- the pinch is performed such that the ratio R between the circumferential speed value V39k of the drive roll 39k of the tension control device 39 and the circumferential speed value V38a (V38b) of the drive roll 38a (38b) of the pinch roll device 38 is constant.
- the drive roll 38a (38b) of the roll device 38 is driven to rotate.
- the tension control device 39 is a device provided in the X-direction transport path R31X, and is disposed downstream of the heating unit 61 in the transport direction. Then, the tension control device 39 adjusts the magnitude (N) of the tension of the non-woven fabric 3a at the position immediately downstream of the device 39 to a predetermined target value (N).
- the tension control device 39 is configured using a so-called dancer roll 39dn. That is, it is provided at a position between a pair of fixed rolls 39s and 39s fixed at a fixed position at a predetermined distance in the transport direction and a pair of fixed rolls 39s and 39s, and can reciprocate in the vertical direction It has a dancer roll 39dn provided, and a drive roll 39k provided on the upstream side in the transport direction from the dancer roll 39dn. Then, the nonwoven fabric 3a is wound around the three members of the pair of fixed rolls 39s and 39s, the dancer roll 39dn, and the drive roll 39k, and is wound around the pair of fixed rolls 39s and 39s and the dancer roll 39dn.
- the non-woven fabric 3a thus formed forms a loop L3adn. Then, a force corresponding to twice the target value of the tension of the non-woven fabric 3a is applied to the dancer roll 39dn in the direction in which the loop L3adn increases in the reciprocating movement direction. Therefore, when the magnitude of the tension of the non-woven fabric 3a is larger than the target value, the dancer roll 39dn moves so that the loop L3adn becomes smaller, while the magnitude of the tension of the non-woven fabric 3a is smaller than the target value. , The dancer roll 39dn moves so that the loop L3adn becomes large.
- the drive roll 39k is driven and rotated by a servomotor (not shown), but the motor rotates the drive roll 39k so that the size of the loop L3adn becomes a predetermined value, and feeds out the non-woven fabric 3a.
- the circumferential speed value (m / min) of the drive roll 39k is decreased, while when it is smaller than the predetermined value, the circumferential speed value of the drive roll 39k is increased.
- tensile_strength of the nonwoven fabric 3a of the position immediately downstream of the tension control apparatus 39 is adjusted so that it may become a target value.
- the downstream pinch roll device 41 is also a device provided in the X-direction transport path R31X, and feeds the non-woven fabric 3a to the bonding device 14 of the main line 11. More specifically, it has a pair of rolls 41a and 41b disposed with their outer peripheral surfaces facing each other, and at least one of the rolls 41a (41b) is driven and rotated by a servomotor (not shown) as a drive source. It is a roll 41a (41b). Then, the non-woven fabric 3a is sent out to the bonding device 14 of the main conveyance path R11 of the main line 11 by this driving rotation (FIG. 2). The drive roll 41 a (41 b) is driven to rotate in conjunction with the bonding device 14.
- the downstream side pinch roll such that the peripheral speed values of the rolls 14a and 14b of the bonding device 14 and the peripheral speed value of the drive roll 41a (41b) of the downstream side pinch roll device 41 become substantially the same value.
- the drive roll 41a (41b) of the device 41 is driven to rotate.
- FIG. 6A is a schematic side view of the bulk recovery apparatus 60
- FIG. 6B is a cross-sectional view taken along the line BB in FIG. 6A.
- the heating unit 61 which makes the principal part of the volume recovery apparatus 60 is shown by the cross sectional view.
- the bulk recovery device 60 includes a heating unit 61 for blowing hot air onto the non-woven fabric 3a to heat the non-woven fabric 3a while passing the non-woven fabric 3a inside, and a hot air supply device 67 for supplying the hot air to the heating unit 61; Have.
- the heating unit 61 is provided in the Y-direction transport path R31Y, and thereby disposed at a position deviated from the main transport path R11 in the Y direction in plan view (FIG. 4) . Therefore, it is effectively prevented that the heat emitted from heating unit 61 itself exerts a thermal influence on intermediate product 1m etc. of main conveyance path R11. Further, the transport route R31Yd of the non-woven fabric 3a heated by the heating unit 61 can be easily secured along the Y direction, whereby natural cooling of the non-woven fabric 3a can be rapidly performed (FIG. 4) .
- the path length of the transport path R31Yd in FIG. 4 is determined by carrying out an actual machine experiment, temperature analysis, or the like. For example, based on these actual machine experiments and temperature analysis, the temperature of the non-woven fabric 3a when the non-woven fabric 3a passes through the respective devices 14, 15, 16, 17, 18 of the main transport route R11 is the respective devices 14, 15, 16 , 17 and 18 lower than the upper limit value of the allowable temperature, and the temperature when the non-woven fabric 3a is joined to the intermediate product 1m (in this example, the absorbent 4) is the upper limit of the allowable temperature of the intermediate product 1m
- the path length of the above-mentioned transport path R31Y is determined so that the temperature is lower than the value.
- the following may be performed. That is, a plurality of Y-direction transport rollers 32Y, 32Y... Having different vertical positions are alternately arranged at the position of the transport path R31Yd, and the non-woven fabric 3a is wound on the plurality of Y-direction transport rollers 32Y, 32Y. To form a plurality of loops, thereby securing the path length in the transport path R31Yd.
- the heating unit 61 is provided outside the case member 62 with the case member 62 opened at both ends in the longitudinal direction, and the non-woven fabric 3a reciprocates in the case member 62. And a plurality of guiding rollers 64, 64, 64 for guiding. And in the case member 62, the going path and the return path of the conveyance path of the nonwoven fabric 3a are respectively formed in the shape of a straight line by guide rollers 64, 64, and 64.
- the case member 62 has a partition member 63 inside, and by the partition member 63, the space in the case member 62 is a space SP62a for the forward path and a space SP62b for the return path. It is divided. That is, the space SP62a for the forward path and the space SP62b for the return path are mutually isolated so that the air can not travel. Further, due to the separation by the partition member 63, both the entrance 62ain for the forward pass of the non-woven fabric 3a and the exit 62bout for the return pass are respectively formed at one end of both ends in the longitudinal direction of the case member 62. In the other end, the outlet 62aout for the forward pass of the nonwoven fabric 3a and the inlet 62bin for the return pass are respectively formed.
- the wall surface 63wa (hereinafter, also referred to as the forward wall surface 63wa) adjacent to the forward path space SP62a of the both wall surfaces 63wa and 63wb of the bulkhead member 63, and the return space space of the both wall surfaces 63wa and 63wb
- the wall surface 63wb adjacent to the SP 62b (hereinafter, also referred to as return surface wall 63wb) is provided in parallel with the transport direction and the X direction, respectively, whereby the forward path wall 63wa and the return channel wall 63wb are each of the non-woven fabric 3a. It is almost parallel to each surface.
- a slit-like injection port 63Na elongated in the X direction is provided in a portion on the upstream side of the forward path (corresponding to the “inlet side of the case member”) of the forward path wall surface 63wa.
- a slit-shaped injection port 63Nb elongated in the X direction is also provided in a portion on the upstream side of the return path (corresponding to "a portion on the inlet side of the case member") of the return path wall surface 63wb.
- the partition wall member 63 has pressure chambers R63a and R63b inside corresponding to the above-described portions. Then, hot air is supplied from the above-described hot air supply device 67 to the pressure chambers R63a and R63b. Further, the cross-sectional shapes of the pressure chambers R63a and R63b (shapes in the X-direction as a normal direction) respectively have tapered shapes that become thinner toward the downstream side in the transport direction, The front end portion of the shape communicates with the corresponding forward path or return path spaces SP62a and SP62b, respectively, whereby the front end portion functions as the above-described injection ports 63Na and 63Nb.
- the hot air is directed toward the downstream side in the transport direction at an acute inclination angle ⁇ with respect to one surface of the nonwoven fabric 3a while facing one surface of the both surfaces. Inject.
- the hot air injected from the forward path injection port 63Na contacts the surface of the non-woven fabric 3a with the velocity component on the downstream side in the transport direction, and flows on the same surface as it is. It is discharged to the outside from an outlet 62aout (corresponding to a discharge port) located at the most downstream in the transport direction. Further, the hot air jetted from the backward path injection port 63Nb comes in contact with the surface of the nonwoven fabric 3a with the velocity component on the downstream side in the transport direction, and flows as it is, in the space SP62b for return path. It is discharged to the outside from an outlet 62bout (corresponding to a discharge port) located at the most downstream in the transport direction.
- the wind speed value Vw (m / min) of the hot air can be made larger than the transport speed value V3 (m / min) of the non-woven fabric 3a. Then, the hot air jetted from the jet ports 63Na and 63Nb passes over the non-woven fabric 3a so as to slide on the surface of the non-woven fabric 3a and is finally discharged to the outside from the respective outlets 62aout and 62bout. . Therefore, based on the relative velocity difference between the hot air and the non-woven fabric 3a, the hot air can be reliably brought into a turbulent state.
- the heat transfer efficiency can be dramatically improved, the nonwoven fabric 3a can be efficiently heated, and the bulk can be recovered quickly.
- the fibers of the non-woven fabric 3a are randomly loosened by the turbulent hot air, this also promotes the recovery of bulk.
- the wind speed value Vw (m / min) of the hot air means, for example, the air volume (m 3 / min) supplied to the forward space SP62a or the return space SP62b, the forward space SP62a or the return space It is a value obtained by dividing by the cross-sectional area of SP 62 b (that is, the area of the cross section whose normal direction is the transport direction).
- the magnitude relationship between the wind speed value Vw and the transport speed value V3 as described above is established over the entire length in the transport direction of each space SP62a, SP62b for forward pass or return pass.
- it does not necessarily have to hold for the entire length. That is, even in a part of the spaces SP62a and SP62b, if the above magnitude relationship is established, it is possible to appropriately enjoy the operation and effect according to the turbulent flow state.
- the shapes of the injection ports 63Na and 63Nb for the forward pass and the return pass are respectively rectangular shapes whose longitudinal direction is in the X direction.
- the dimension in the X direction of the forward path injection port 63Na is equal to the dimension in the X direction of the forward path space SP62a, and the dimension in the X direction of the return path injection port 63Nb is the same as the backward path space SP62b. It is considered to be equivalent to the dimension in the X direction, but it is not limited thereto.
- the injection ports 63Na and 63Nb may be smaller.
- the dimension in the X direction of each jet port 63Na, 63Nb is preferably larger than the dimension in the width direction (the dimension in the X direction) of the non-woven fabric 3a. Be suppressed.
- each of the injection ports 63Na and 63Nb is set by selecting an arbitrary value from the range of 1 mm to 10 mm, for example.
- the angle ⁇ that the hot air jet direction makes with the conveyance direction of the non-woven fabric 3a at the position of the jet openings 63Na and 63Nb preferably falls within the range of 0 ° to 30 °, more preferably, It is preferable to be within the range of 0 ° to 10 ° (FIG. 6A). And if it becomes like this, hot air can be flowed along the surface of nonwoven fabric 3a certainly.
- the heating unit 61 is of a vertically-mounted type in which the longitudinal direction of the case member 62 is directed in the vertical direction, whereby the forward and return paths related to the transport path of the non-woven fabric 3a are made vertically. It is along.
- a route directed downward from above is taken as a forward route
- a route directed upward from below is taken as a return route. Therefore, as shown in FIG. 5, the Y-direction transport route R31Y can be connected to the X-direction transport route R31X in a state where the vertical height position of the Y-direction transport route R31Y is high.
- such a vertical installation type is also excellent in that the flat space required for the installation of the heating unit 61 can be small.
- the arrangement of the heating unit 61 is not limited to any vertical installation type, and may be a horizontal installation type. That is, the longitudinal direction of the case member 62 may be directed in the horizontal direction, whereby the forward path and the return path relating to the transport path of the non-woven fabric 3a may be in the horizontal direction. Furthermore, the longitudinal direction of the case member 62 may be inclined from the vertical direction and the horizontal direction depending on the layout and the like.
- the hot air supply apparatus 67 has the air blower 67b and the heater 67h. Then, the air generated by the blower 67b is heated by the heater 67h to generate hot air, and the pressure chamber of the partition member 63 in the case member 62 related to the heating unit 61 described above via the appropriate pipe member 67p. Supply to R63a and R63b. Then, hot air is injected from the injection ports 63Na and 63Nb via the pressure chambers R63a and R63b.
- the blower 67 b includes, for example, an impeller 67 i that rotates using a motor as a drive source, and an inverter (not shown) that adjusts the number of revolutions (rpm) of the motor.
- VVVF inverter control can be performed, and as a result, the air volume (m 3 / minute) can be adjusted to an arbitrary value through the change of the rotational speed (rpm) of the impeller 67i.
- the heater is, for example, an electric heater that heats with power (kW), and the temperature of the hot air can be adjusted to an arbitrary value by changing the amount of power input.
- the temperature of the hot air it is preferable that the temperature at the position of the injection ports 63Na and 63Nb be 50 ° C. or more lower than the melting point of the thermoplastic resin fiber contained in the non-woven fabric 3a and be less than the melting point . And if it sets to such a range, bulk can be reliably recovered
- the heater 67h may be built in the blower 67b, or may be provided outside the blower 67b. In the case where the heater 67h is provided outside, it is preferable that the heaters 67ha and 67hb be disposed close to the case member 62 of the heating unit 61, as indicated by a two-dot chain line virtually in FIG. 6A. When adjusting the temperature, the response can be enhanced. Further, in this case, it is more preferable to provide the heaters 67ha and 67hb respectively for the injection ports 63Na and 63Nb.
- the heater 67ha in correspondence with the forward path injection port 63Na, and to separately provide the heater 67hb in correspondence to the return path injection port 63Nb. Then, in this way, the temperature of the hot air can be adjusted individually for each of the injection ports 63Na and 63Nb, and as a result, the condition setting of the bulk recovery process can be performed more finely.
- the heaters 67h, 67ha, and 67hb are not limited to electric heaters, and any heater can be used as long as it can heat a gas such as air.
- wind refers to the flow of air, but in a broad sense, it also includes the flow of gas such as nitrogen gas or inert gas, in addition to the flow of air. That is, nitrogen gas or the like may be sprayed from the injection ports 63Na and 63Nb.
- gas such as nitrogen gas or inert gas
- the hot air supply device 67 may be disposed at a position deviated from the main conveyance path R11 in the Y direction. If so, the hot air supply device 67 detects surrounding air. The thermal effect on the intermediate product 1m of the main conveyance route R11 due to heating is also effectively prevented (3)
- Adhesive application devices 81, 82 In the examples of FIGS. 2 and 5, two types of adhesive application devices 81 and 82 are provided to apply the hot melt adhesive to the nonwoven fabric 3a. And both coating devices 81 and 82 are provided in X direction conveyance path R31X. More specifically, the adhesive is applied to the non-woven fabric 3a at a position from the position downstream of the heating unit 61 in the transport direction to the bonding device 14 of the main line 11.
- Each of the coating devices 81 and 82 has a discharge unit 81a and 82a for discharging an adhesive and a pump (not shown). Then, the pump press-feeds the hot melt adhesive in a fluid state to the discharge parts 81a and 82a, whereby the adhesive in a fluid state is discharged from the discharge parts 81a and 82a.
- one of the two types of coating devices 81 is a contact-type coating device, and the other coating device 82 is a non-contact-type coating device.
- the contact type coating device 81 applies an adhesive to the discharge unit 81a in contact with or in proximity to the application target, while the non-contact type coating device 82 sufficiently separates the discharge unit 82a from the application target In the state, the adhesive is flowed down from the discharge part 82a and applied.
- the contact type coating device 81 first applies the adhesive to the non-woven fabric 3a, and thereafter the non-contact type coating device 82 applies the adhesive at the downstream position. It has become.
- the contact type coating device 81 applies a solid coating to a portion not covering the absorbers 4 and 4 in one side of the non-woven fabric 3a, that is, a portion to be joined to the back sheet 5a in one side of the non-woven fabric 3a. Apply the adhesive in the application pattern. Therefore, the coating device 81 has a slit-shaped nozzle long in the Y direction as the discharge part 81a, and thereby applies the adhesive to the non-woven fabric 3a over substantially the entire length in the Y direction. The adhesive is intermittently discharged to selectively apply the adhesive only to the application target site.
- the non-contact type coating device 82 applies the adhesive in a predetermined coating pattern, with the substantially entire surface on one side of the non-woven fabric 3 a as the coating target portion.
- a coating pattern is a pattern in which a plurality of linear portions continuous along the transport direction are arranged in the Y direction, and as an example of such linear portions, a straight line along the transport direction or a transport direction There may be mentioned a spiral curve along, a waveform curve along the transport direction, and the like.
- the application device 82 has a plurality of substantially circular hole-shaped nozzles arranged in the Y direction as the discharge part 82a, and the adhesive flows down continuously from each nozzle. By doing this, the adhesive is applied to substantially the entire surface on one side of the non-woven fabric 3a in the above-mentioned application pattern.
- Second line 90 for back sheet 5a >>> As shown in FIG. 2, the sub line 90 for the back sheet 5 a is provided immediately below the main transport path R ⁇ b> 11 of the main line 11. Then, the back sheet 5a is inserted into the main transport path R11 from the lower side of the main transport path R11 of the main line 11.
- the sub-line 90 for the back sheet 5a includes the conveying device 91 for drawing out the film material 5a to be the material of the back sheet 5a from the film material original fabric 5aR and conveying it to the main conveyance path R11 and the film material original film 5aR
- the transport device 91 includes a plurality of transport rollers 92X, 92X ... forming the transport path R5a of the back sheet 5a, two delivery devices 95, 95, a material contacting device 96, an accumulator device 97, and an upstream pinch roll device And 98, a tension control device 99, and a downstream pinch roll device 101.
- the configurations of any of the devices 95, 95, 96, 97, 98, 99, 101 are the same as the devices 35, 35, 36, 37, 38, 39, 41 of the subline 30 for the top sheet 3a described above. It is almost the same.
- the configuration of the adhesive application device 103 is also substantially the same as that of the non-contact application device 82 described above. Therefore, the description is omitted.
- the transport path R5a of the back sheet 5a when the transport path R5a of the back sheet 5a is viewed in a plan view, the transport path R5a forms a straight line along the X direction, and the same In the case where it sees, the conveyance route R5a overlaps the main conveyance route R11 over substantially the entire length thereof. Therefore, as shown in FIG. 2, if the conveyance direction of the back sheet 5a which is the film material 5a is directed upward at the downstream end R5ad in the conveyance path R5a, the back sheet 5a can be promptly conveyed to the main conveyance path R11. Can be
- the transport route R5a of the sub-line 90 for the back sheet 5a is not limited to the above. That is, as in the transport path of the subline 30 for the top sheet 3a in FIG. 4, the Y-direction transport path and the X-direction transport path are provided, and the Y-direction transport path and the X-direction transport path It may be connected by a transfer direction changing mechanism such as a turn bar TB.
- the Y-direction transport path includes the feeding devices 95 and 95, the material contacting device 96, the accumulator device 97, and the upstream pinch roll device 98
- the X-direction transport path includes You may have the tension control apparatus 99 and the downstream pinch roll apparatus 101.
- the manufacturing line 10 of 1st Embodiment was demonstrated, when newly installing this manufacturing line 10, if the said volume recovery apparatus 60 is also installed together, in the manufacturing line 10, it is a top sheet from the beginning of operation. Bulk recovery processing can be performed on the nonwoven fabric 3a for 3a. Further, when the bulk recovery device 60 is installed, as shown in FIG. 4, if the heating unit 61 of the same device 60 is disposed on the Y-direction transport path R31Y, the thermal influence of the heating unit 61 is the main line 11. It is also effectively prevented that the intermediate product 1m of the main transport path R11 and the devices 14, 15, 16, 17, 18 are extended.
- the middle of the main conveyance route R11 The same device 60 can be added according to the specification which does not thermally affect the product 1 m and the respective devices 14, 15.
- the existing production line 10 already has all the configurations except for the bulk recovery device 60 before remodeling (FIG. 2).
- the main line 11 has all the devices 14, 15, 16, 16, 17, 18, 12 CV, 12 R. All the devices 95, 95, 96, 97, 98, 99, 101, 92X,... And about secondary line 30 for top sheet 3a, all devices 35, 35, 36, 37, 38, 39, 41, 32X, 32Y ... except heating unit 61 and hot-air supply device 67 concerning bulk recovery device 60. have. That is, as shown in FIGS. 4 and 5, the sub-line 30 includes a plurality of Y-direction transport rollers 32Y, 32Y... Forming the Y-direction transport path R31Y, and a plurality forming the X-direction transport path R31X.
- the Y-direction transport path R31Y includes the delivery devices 35 and 35, the material joining device 36, the accumulator device 37, and the upstream pinch roll device 38.
- the X-direction transport path R31X also includes a tension control device 39 and a downstream pinch roll device 41.
- the heating unit 61 is disposed at the position of. Then, if the heating unit 61 is disposed at such a position, the heating unit 61 is disposed at a position deviated from the main conveyance path R11 of the main line 11 in the Y direction. Is prevented from reaching the intermediate product 1m of the main transport route R11. Further, at the time of the modification, the hot air supply device 67 is also disposed at a position deviated from the main conveyance path R11 in the Y direction. And if it arrange
- FIG. 7 is a schematic side view of the manufacturing line 10 of the second embodiment.
- FIG. 8 is a view on arrow VIII-VIII in FIG. In addition, in FIG. 8, the nonwoven fabric 3a is not shown.
- the heating unit 61 of the bulk recovery device 60 has the purpose of suppressing the thermal influence exerted on the intermediate product 1m and the like of the main line 11, as shown in FIG. 61 is disposed at a position deviated from the main conveyance path R11 of the main line 11 in the Y direction.
- the same object is achieved by arranging the heating unit 61 directly above the main transport path R11 of the main line 11. The details are as follows.
- the air heated by the heat generated by the heating unit 61 rises based on the decrease in specific gravity.
- the heating unit 61 is disposed above the main conveyance path R11, so that the main conveyance path R11 does not exist immediately above the heating unit 61. Therefore, the heating air is effectively prevented from heating the intermediate product 1m and the devices 14, 15 ... of the main conveyance path R11, that is, the thermal influence of the heating unit 61 is effectively prevented. it can.
- the conveyance path R31X of the subline 30 for the top sheet 3a is main along the entire length. It is disposed immediately above the transport route R11. That is, in the second embodiment, the Y-direction transport route R31Y is eliminated and only the X-direction transport route R31X is provided, whereby the X-direction transport route R31X is provided by the subline 30 for the top sheet 3a. It is the only transport route. Then, as described above, the X-direction transport route R31X is set in a straight line along the X direction when viewed in a plan view, and the route R31X overlaps the main transport route R11. There is.
- Such an X-direction transport path R31X is formed by the plurality of X-direction transport rollers 32X, 32X.
- the devices 35, 35, 36, 37, 38, 61, 39, 41, 81, 82 of the subline 30 are arranged as follows from the upstream side to the downstream side in the transport direction. Arranged in order. That is, first, the two feeding devices 35, 35 which form the end of the transport path R31X are disposed, and subsequently, the material joining device 36, the accumulator device 37, the upstream pinch roll device 38, the heating unit 61, The tension control device 39 and the downstream side pinch roll device 41 are arranged in this order from the upstream side to the downstream side in the transport direction. And in this order, the nonwoven fabric 3a passes each apparatus 35, 35, 36 ... one by one, and, after that, is thrown into the main conveyance path R11 of the main line 11.
- the meaning of “directly above” in the description “the heating unit 61 of the bulk recovery device 60 is disposed immediately above the main conveyance path R11” may of course be interpreted in a general sense, but here If it is intended to define it, it means an arrangement relationship in which at least a part of the heating unit 61 appears to be superimposed above the main transport path R11 when viewed in a plan view, that is, viewed from above. More specifically, it is an arrangement relationship in which at least a part of the heating unit 61 appears to overlap above the movement trajectory R11 of the intermediate product 1m.
- the heating unit 61 is disposed above the accumulator device 37, but the arrangement position of the heating unit 61 is not limited to this. For example, it may be disposed above the delivery devices 35, 35.
- the heating unit 61 is of a horizontally set type. That is, the heating unit 61 is disposed in a posture in which the forward path and the return path of the transport path of the non-woven fabric 3a are horizontally aligned. And according to this horizontal installation type, the size in the vertical direction can be reduced.
- the heating unit 61 being disposed immediately above the main conveyance path R11.
- utility equipment such as a duct is often already disposed.
- the heating unit 61 disposed immediately above the main transport route R11 may interfere with existing utility equipment, thereby heating the building indoors. It becomes difficult to accommodate the unit 61.
- the differences from the first embodiment have been mainly described above, but the devices 35, 35, 36, 37, 38, 61, 39, 41, 81, 82 belonging to the subline 30 for the top sheet 3a
- the configuration is substantially the same as that of the first embodiment.
- the configuration of the main line 11 and the configuration of the sub line 90 for the back sheet 5a are also substantially the same as those of the first embodiment. Therefore, these explanations are omitted.
- the bulk recovery device 60 when newly installing the production line 10 of the second embodiment, if the bulk recovery device 60 is also installed together, in the production line 10, bulk relative to the nonwoven fabric 3a for the top sheet 3a from the beginning of operation. Recovery can be performed. Further, at that time, if the heating unit 61 of the bulk recovery apparatus 60 is disposed immediately above the main conveyance path R11 of the main line 11, the thermal influence of the heating unit 61 is an intermediate product 1m of the main conveyance path R11. .. Can be effectively prevented.
- the bulk recovery device 60 when adding the bulk recovery device 60 to the existing production line 10 not having the bulk recovery device 60, if the production line 10 is modified as follows, the middle of the main conveyance route R11 The bulk recovery device 60 can be added with a specification that does not thermally affect the product 1 m and the devices 14, 15.
- the existing production line 10 already has all the devices 14, 15, 16, 16, 17, 18, 12 CV, 12R ... for the main line 11 before the remodeling.
- the auxiliary line 90 for the back sheet 5a also has all the devices 95, 95, 96, 97, 98, 99, 101, 92X.
- adhesive application devices 81 and 82 are arranged.
- the heating unit 61 is disposed at the position of. Then, if the heating unit 61 is disposed at such a position, the heating unit 61 is disposed immediately above the main conveyance path R11 of the main line 11, so the thermal influence of the heating unit 61 causes the main conveyance path R11. It becomes difficult to reach intermediate product 1m etc. Further, at the time of the modification, the hot air supply device 67 is also disposed at a position deviated from the main conveyance path R11 in the Y direction. And if it arrange
- the manufacturing line 10 of pet sheet 1 was illustrated as an example of a manufacturing device of an absorptive article, it is not restricted to this at all.
- the concept of the present invention may be applied to a diaper or sanitary napkin manufacturing apparatus.
- a nonwoven fabric for top sheets can be mentioned about both a sanitary napkin and a diaper.
- the heating target of the heating unit 61 is not limited to the nonwoven fabric for the top sheet at all. That is, the non-woven fabric of the material of the other part of which bulkiness is required may be heated by the heating unit 61.
- the non-woven fabric 3 (3a) for the top sheet 3 (3a) having a plurality of linear protrusions 3p, 3p.
- it is not restricted to this at all.
- it may be a non-woven fabric of a normal form, that is, a non-woven fabric of which both surfaces are substantially flat.
- the heating unit 61 of the bulk recovery device 60 heats the nonwoven fabric 3 a in both the forward path and the return path, but it is not limited thereto.
- the heating unit 61 when the bulk recovers sufficiently with only one of the forward path and the return path, either one of the forward path injection port 63Na and the return path injection port 63Nb may be omitted.
- the heating unit 61 is not one but a plurality of non-woven fabrics 3a are heated by three or more passes. good.
- the transfer path length of the non-woven fabric 3a necessary for bulk recovery is secured while the dimension of the heating unit 61 in the longitudinal direction It is preferable because it can be shortened.
- heating unit 61 was constituted by the method different from the existing air through method, it is not restricted to this at all. That is, the heating unit may be configured by the existing air through method.
- the heating unit configured by the existing air through method is, for example, as follows. The heating unit is provided so as to face the other surface of the two surfaces of the non-woven fabric 3a conveyed along the transport direction, and the hot-air jet port provided opposite to one surface of the non-woven fabric 3a. And a suction port for hot air.
- the hot air is made to penetrate in the thickness direction of the non-woven fabric 3a by heating the non-woven fabric 3a by forming a streamline which sucks the hot air injected from the injection port with the suction port by both the injection port and the suction port.
- a suction belt conveyor apparatus places and conveys the non-woven fabric 3a on the outer peripheral surface of the endless belt which is driven to rotate, the outer peripheral surface is provided with a plurality of intake holes. Functions as the above suction port for sucking hot air. Further, the suction drum device winds and conveys the non-woven fabric 3a around the outer peripheral surface of the rotating rotating drum, and the outer peripheral surface is provided with a plurality of intake holes. It functions as the above suction port for suction.
- the non-woven fabric 3a which has passed through the heating unit 61 of the bulk recovery apparatus 60 is naturally cooled as it were, but depending on the case, as shown in FIG.
- a cooling device 70 may be additionally provided to forcibly cool the non-woven fabric 3a.
- the cooling device 70 is disposed at a position immediately downstream of the heating unit 61, and supplies a cooling air to the cooling unit 71, which cools the nonwoven fabric 3a by blowing a cooling air, and supplies the cooling air to the cooling unit 71.
- a wind supply device (not shown).
- the thermal influence of the non-woven fabric 3a affects the intermediate product 1m of the main conveyance path R11 of the main line 11 and the respective devices 14,15. Can be reliably prevented.
- the cooling unit 71 includes the case member 62, the partition member 63, and the guide rollers 64, 64, and 64. However, from the slit-like injection ports 63Na and 63Nb provided on the both wall surfaces 63wa and 63wb of the partition wall member 63, a wind having a temperature capable of cooling the non-woven fabric 3a is injected, respectively.
- the wind supply device has at least a blower, and preferably has a cooler for cooling the wind generated by the blower.
- the temperature of the above-mentioned wind can cool the non-woven fabric 3a if it is lower than the temperature of the non-woven fabric 3a just after coming out of the case member 62 of the heating unit 61, so even if it is higher than normal temperature (20 ° C ⁇ 15 ° C) For example, it may be an arbitrary value in the range of 5 ° C.
- cooling unit 71 having such a configuration, since the cooling air jetted from the jet ports 63Na and 63Nb flows on the surface of the non-woven fabric 3a, compressing the non-woven fabric 3a in the thickness direction is effectively prevented Be done. Therefore, crushing the restored bulk with the wind is effectively avoided.
- the hot air having flowed through the forward and return spaces SP62a and SP62b is directly discharged from the outlets 62aout and 62bout of the non-woven fabric 3a of the case member 62 (FIG. 6A).
- the hot air having flowed through the spaces SP62a and SP62b may be recovered and returned to the suction side portion 67bs of the blower 67b.
- openings 63ha and 63hb are provided in the downstream portion of the partition member 63 in the transport direction, and one of the pipes of the recovery pipe member 69 is provided in the openings 63ha and 63hb.
- the end openings are connected to communicate the space in the pipe member 69 with at least one of the downstream end SP62ae of the forward space SP62a and the downstream end SP62be of the return space SP62b, and
- the other tube end opening of the tube member 69 may be in communication with the suction side portion 67bs of the blower 67b.
- the forward path injection port 63Na is provided on the upstream side of the forward path of the forward path wall surface 63wa, and the return path injection port 63Nb is Although it was provided in the part by the side of the upper stream of the return path among wall faces 63wb, it is not restricted to this at all.
- the forward path injection port 63Na is provided in the downstream portion of the forward path wall surface 63wa (corresponding to "the portion on the outlet side of the case member")
- the return path injection port 63Nb is You may provide in the part (equivalent to "the part by the side of the exit in a case member") of the downstream path of the return path among the wall surfaces 63wb.
- both forward and backward injection ports 63Na and 63Nb are directed toward the upstream side in the transport direction at an acute inclination angle with respect to one of both surfaces of the nonwoven fabric 3a.
- the hot air injected from the jet orifice 63Na for the forward pass contacts the surface of the non-woven fabric 3a with the velocity component on the upstream side in the transport direction, and flows as it is on the surface of the non-woven fabric 3a upstream Finally, the air is discharged to the outside from the forward passage inlet 62ain located at the uppermost stream of the forward passage space SP62a.
- the hot air jetted from the ejection port 63Nb for the return path contacts the surface of the non-woven fabric 3a with the velocity component on the upstream side in the transport direction, and flows as it is on the surface of the non-woven fabric 3a upstream
- the air is discharged from the return path inlet 62bin located on the most upstream side in the transport direction in the space SP62b for return path.
- the same applies to the cooling unit 71 described above.
- the solid member which does not have space other than pressure chamber R63a, R63b inside fundamentally was used as a material of the partition member 63, it does not restrict to this at all.
- a hollow member having a space inside may be used.
- the hollow member for example, a stainless steel flat plate member (not shown) forming the forward path wall surface 63wa in FIG. 6A, a stainless steel flat plate member (not shown) forming the return path wall surface 63wb, and these flat plate members
- a combination member having a prismatic member (not shown) which intervenes between and connects these flat plate members to each other can be exemplified.
- the X direction is illustrated as the first direction
- the Y direction is illustrated as the second direction.
- the X direction and the Y direction are orthogonal to each other, but the present invention is not limited thereto. That is, it is sufficient if they intersect with each other in the horizontal plane.
- the main line 11 of FIG. 2 does not have the absorber manufacturing apparatus 111 for manufacturing the absorber 4, but may have the absorber manufacturing apparatus 111.
- FIG. 11 is a schematic side view of the absorber manufacturing apparatus 111. As shown in FIG. The conveyance route R111 of the absorber manufacturing apparatus 111 is also a straight line along the X direction in plan view, and the conveyance route R111 is connected in a straight line upstream of the main conveyance route R11 of the main line 11 described above. It is done.
- a non-skin side covering sheet supply device 114 for supplying a continuous sheet 4t2a of the non-skin side covering sheet 4t2 (hereinafter, simply referred to as non-skin side covering sheet 4t2a) to the same conveyance route R111 ,
- a stacking drum device 115 for laminating the continuous body 4ca of the absorbent core 4c on the upper surface of the non-skin side covering sheet 4t2a, and a continuous sheet 4t1a of the strip-like skin side covering sheet 4t1 from above the continuous body 4ca of the absorbent core 4c
- the skin-side covering sheet supply device 116 for supplying the skin-side covering sheet 4t1a (hereinafter simply referred to as "skin-side covering sheet 4t1a”) and the Y-direction ends of the non-skin-side covering sheet 4t2a are folded back so as to cover the skin-side covering sheet 4t1a.
- Absorbent body by cutting the continuous member 4a of the absorbent body 4 in which the respective end portions of the folded guide device 117 and the non-skin side covering sheet 4t2a are folded back
- a rotary cutter device 118 for generating are provided side by side in this order and from upstream to downstream in the transport direction.
- the conveyance speed value of absorber 4 in conveyance conveyor 112CV located in the nearest downstream side of rotary cutter device 118 is made larger than the conveyance speed value of absorber 4 in rotary cutter device 118, and, thereby, .. Are sent to the main conveyance path R11 of the main line 11 in a state in which a space is opened between the adjacent absorbers 4 in the conveyance direction and the space is opened.
- Each of the devices 114, 115, 116, 117, 118 is also supported by the end plate of the main transport path R11 described above, for example.
- non-skin-side covering sheet supply device 114 and the skin-side covering sheet supply device 116 are the same devices as the respective devices 95, 95, 96 ... provided in the sub-line 90 for the back sheet 5a in FIG. Since it is clear that it is realizable by using, it abbreviate
- the stacking drum device 115 can also be realized by using the rotating drum 115D that has the function of absorbing liquid absorbent fibers and SAP on the outer peripheral surface and rotates, and thus the description thereof is also omitted.
- the folding guide device 117 can be realized by arranging appropriate plate members on both sides in the Y direction, the description thereof will be omitted.
- the rotary cutter device 118 can also be realized by using the same kind of device as the rotary cutter device 18 (FIG. 2) provided in the main conveyance path R11 of the main line 11 described above. Also omitted.
- the stacking drum apparatus 115 was manufacturing the continuous body 4ca of the absorptive core 4c, it is not restricted to this at all. That is, the co-stacking fiber drum device 115 may be manufactured in a state where the plurality of absorbent cores 4c, 4c,... Are arranged at intervals in the transport direction.
- one or more pressing devices may be provided at a position between the folding guide device 117 and the rotary cutter device 118 in the transport path R111, and You may press the body 4a from the up-down direction which is a thickness direction.
- this press apparatus the structure having a pair of upper and lower rotating rolls can be illustrated.
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Abstract
Description
平面視で第1方向に沿って一直線に配された第1搬送経路と、
前記第1搬送経路に沿って搬送される吸収性物品に係る中間製品に対して処理を行う複数の処理装置と、
前記吸収性物品の部品となる帯状の不織布を当該不織布が連続する方向に搬送しながら、前記不織布に熱風を吹き付けることによって前記不織布を加熱して前記不織布の嵩を回復する加熱ユニットと、を有し、
平面視で前記第1方向と交差する方向を第2方向とした場合に、
前記加熱ユニットが、前記第1搬送経路の直上の位置、又は前記第1搬送経路から前記第2方向にずれた位置に配置されていることを特徴とする吸収性物品の製造装置である。
平面視で第1方向に沿って一直線に配された第1搬送経路に沿って搬送される吸収性物品の中間製品に対して複数の処理装置で処理を行うことによって吸収性物品を製造する製造装置の改造方法であって、
平面視で前記第1方向と交差する方向を第2方向とすることと、
前記吸収性物品の部品となる帯状の不織布を当該不織布が連続する方向に搬送しながら、前記不織布に熱風を吹き付けることによって前記不織布を加熱して前記不織布の嵩を回復する加熱ユニットを、前記第1搬送経路の直上の位置、又は前記第1搬送経路から前記第2方向にずれた位置に配置することと、を有することを特徴とする吸収性物品の製造装置の改造方法である。
前記第1搬送経路に沿って搬送される吸収性物品に係る中間製品に対して処理を行う複数の処理装置と、
前記吸収性物品の部品となる帯状の不織布を当該不織布が連続する方向に搬送しながら、前記不織布に熱風を吹き付けることによって前記不織布を加熱して前記不織布の嵩を回復する加熱ユニットと、を有し、
平面視で前記第1方向と交差する方向を第2方向とした場合に、
前記加熱ユニットが、前記第1搬送経路の直上の位置、又は前記第1搬送経路から前記第2方向にずれた位置に配置されていることを特徴とする吸収性物品の製造装置である。
前記加熱ユニットは、前記第1搬送経路から前記第2方向にずれた位置に配置されており、
前記加熱ユニットで加熱されて前記嵩が回復された前記不織布は、第2搬送経路によって前記第2方向へ搬送されて、前記第1搬送経路に投入されるのが望ましい。
前記加熱ユニットは前記第1搬送経路の直上に配置されており、
前記加熱ユニットでの前記不織布の搬送経路は、水平方向に沿っているのが望ましい。
前記加熱ユニットは、前記不織布の入口及び前記不織布の出口を具備したケース部材を有し、
前記ケース部材における前記入口側の部分及び前記出口側の部分のうちの一方は、他方に向けて前記熱風を前記ケース部材内の空間に噴射する噴射口を有し、
前記他方は、前記不織布の両面のうちの一方の面に接触しながら流れた前記熱風を、前記ケース部材から排出する排出口を有するのが望ましい。
前記熱風によって加熱された前記不織布を、前記第1搬送経路に投入する前に冷却する冷却ユニットを有し、
前記冷却ユニットは、前記不織布の入口及び前記不織布の出口を具備したケース部材を有し、
前記ケース部材における前記入口側の部分及び前記出口側の部分のうちの一方は、他方に向けて冷却用の風を前記ケース部材内の空間に噴射する噴射口を有し、
前記他方は、前記不織布の両面のうちの一方の面に接触しながら流れた前記風を、前記ケース部材から排出する排出口を有するのが望ましい。
平面視で第1方向に沿って一直線に配された第1搬送経路に沿って搬送される吸収性物品の中間製品に対して複数の処理装置で処理を行うことによって吸収性物品を製造する製造装置の改造方法であって、
平面視で前記第1方向と交差する方向を第2方向とすることと、
前記吸収性物品の部品となる帯状の不織布を当該不織布が連続する方向に搬送しながら、前記不織布に熱風を吹き付けることによって前記不織布を加熱して前記不織布の嵩を回復する加熱ユニットを、前記第1搬送経路の直上の位置、又は前記第1搬送経路から前記第2方向にずれた位置に配置することと、を有することを特徴とする吸収性物品の製造装置の改造方法である。
第1実施形態の吸収性物品の製造装置10は、吸収性物品の一例としてペットシート1を製造する。
図3に示すように、主ライン11は、平面視でX方向に沿った一直線の搬送経路R11を有している。すなわち、鉛直方向の上方から鉛直方向に平行な視線で主ライン11を見た場合に、X方向(第1方向に相当)に沿った一直線の搬送経路R11(第1搬送経路に相当)を有している。以下、この搬送経路R11のことを「メイン搬送経路R11」と言う。
図4は、トップシート3a用の副ライン30を上方から見た概略平面図であり、図5は、図4中のA-A矢視図と図4中のB-B矢視図とを接続して示した概略側面図である。
図4に示すように、搬送装置31は、不織布3aの搬送経路として2種類の搬送経路R31X,R31Yを有する。すなわち、当該搬送経路として、平面視でY方向に沿って一直線に不織布3aを搬送するY方向搬送経路R31Yと、平面視でX方向に沿って一直線に不織布3aを搬送するX方向搬送経路R31Xとを有している。そして、Y方向搬送経路R31Yの方がX方向搬送経路R31Xよりも搬送方向の上流側に位置している。よって、不織布原反3aRから繰り出された不織布3aは、先ず、Y方向搬送経路R31Yを通過する。そして、Y方向搬送経路R31YとX方向搬送経路R31Xとの境界に配された45°ターンバーTBで不織布3aの搬送方向はY方向からX方向に変換され、これにより、不織布3aはX方向搬送経路R31Xに入る。ここで、かかるX方向搬送経路R31Xを平面視で見た場合には、その略全長に亘って主ライン11のメイン搬送経路R11と重なっている。よって、当該X方向搬送経路R31Xを通過して、メイン搬送経路R11の接合装置41の直上の位置に至り(図2)、当該位置において、不織布3aは速やかにメイン搬送経路R11の上方から同経路R11に投入される。
図6Aは、嵩回復装置60の概略側面図であり、図6Bは、図6A中のB-B断面図である。なお、図6Aでは、嵩回復装置60の要部をなす加熱ユニット61を断面視で示している。
(3)接着剤塗布装置81,82
この図2及び図5の例では、不織布3aにホットメルト接着剤を塗布すべく、2種類の接着剤塗布装置81,82が設けられている。そして、どちらの塗布装置81,82も、X方向搬送経路R31Xに設けられている。より詳しくは、加熱ユニット61よりも搬送方向の下流側の位置から、主ライン11の接合装置14までの間の位置において、不織布3aに接着剤を塗布するようになっている。
図2に示すように、バックシート5a用の副ライン90は、主ライン11のメイン搬送経路R11の直下に設けられている。そして、これにより、主ライン11のメイン搬送経路R11の下方から、同メイン搬送経路R11にバックシート5aを投入する。
図7は、第2実施形態の製造ライン10の概略側面図である。また、図8は、図7中のVIII-VIII矢視図である。なお、図8中では、不織布3aを不図示としている。
以上、本発明の実施形態について説明したが、上記の実施形態は、本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。また、本発明は、その趣旨を逸脱することなく、変更や改良され得るとともに、本発明にはその等価物が含まれるのはいうまでもない。例えば、以下に示すような変形が可能である。
1m 中間製品、
3 トップシート(不織布)、3sa 面、3sb 面、3e 外周縁部、
3h 貫通孔、3p 突部、3t 溝部、
3a トップシートの連続シート(不織布)、3aR 不織布原反、
3aes 先端部、3aee 尾端部、
4 吸収体、4ca 吸収体の連続体、
4c 吸収性コア、4ca 吸収性コアの連続体、
4t1 肌側被覆シート、4t1a 肌側被覆シートの連続シート、
4t2 非肌側被覆シート、4t2a 非肌側被覆シートの連続シート、
5 バックシート(フィルム材)、5a バックシートの連続シート、
5aR フィルム材原反、
10 製造ライン、10b 床部、
11 主ライン、12CV 搬送コンベア、12R 搬送ローラー、
14 接合装置(処理装置)、14a 上ロール、14b 下ロール、
15 軽プレス装置(処理装置、第1のプレス装置)、
15a 上ロール、15b 下ロール、
16 エンドプレス装置(処理装置、第2のプレス装置)、
16a 上ロール、16b 下ロール、16ap 突部、
17 サイドエッジプレス装置(処理装置、第3のプレス装置)、
17a 上ロール、17b 下ロール、17ap 突部、
18 ロータリーカッター装置(処理装置)、
18a カッター刃ロール、18b アンビルロール、18c カッター刃、
30 トップシート用の副ライン、
31 搬送装置、
32X X方向搬送ローラー、32Y Y方向搬送ローラー、
35 繰り出し装置、
36 資材接ぎ装置、
37 アキュムレータ装置、
37m 可動ローラー、G37m 可動ローラー群、
37s 固定ローラー、G37s 固定ローラー群、
38 上流側ピンチロール装置、
38a ロール、38b ロール、
39 テンションコントロール装置、
39dn ダンサーロール、39k 駆動ロール、
39s 固定ロール、
41 ピンチロール装置、
41a ロール、41b ロール、
60 嵩回復装置、61 加熱ユニット、
62 ケース部材、
62ain 入口、62aout 出口(排出口)、
62bin 入口、62bout 出口(排出口)、
63 隔壁部材、
63Na 往路用の噴射口、63Nb 復路用の噴射口、
63ha 開口、63hb 開口、
63wa 往路用壁面、63wb 復路用壁面、
64 案内ローラー、
67 熱風供給装置、
67b 送風機、67bs 吸い込み側部分、
67h ヒーター、67ha ヒーター、67hb ヒーター、
67i インペラ、67p 管部材、67pc 管部材、69 回収用管部材、
70 冷却装置、71 冷却ユニット、
81 接触式の接着剤塗布装置、81a 吐出部、
82 非接触式の接着剤塗布装置、82a 吐出部、
90 バックシート用の副ライン、
91 搬送装置、
92X 搬送ローラー、
95 繰り出し装置、
96 資材接ぎ装置、
97 アキュムレータ装置、
98 上流側ピンチロール装置、
99 テンションコントロール装置、
101 下流側ピンチロール装置、
103 接着剤塗布装置、
111 吸収体製造装置、
112CV 搬送コンベア、112R 搬送ローラー、
114 非肌側被覆シート供給装置、
115 積繊ドラム装置、115D 回転ドラム、
116 肌側被覆シート供給装置、
117 折り返しガイド装置、
118 ロータリーカッター装置、
TB ターンバー、CTB 中心軸、
R11 メイン搬送経路(第1搬送経路)、
R31X X方向搬送経路、
R31Y Y方向搬送経路、R31Yd 下流端部(第2搬送経路)、
R5a バックシートの搬送経路、R5ad 下流端部、
R111 吸収体製造装置の搬送経路、
SP62a 往路用の空間、SP62ae 下流端部、
SP62b 復路用の空間、SP62be 下流端部、
R63a 圧力室、R63b 圧力室、
L3a ループ、L3adn ループ、
Claims (6)
- 平面視で第1方向に沿って一直線に配された第1搬送経路と、
前記第1搬送経路に沿って搬送される吸収性物品に係る中間製品に対して処理を行う複数の処理装置と、
前記吸収性物品の部品となる帯状の不織布を当該不織布が連続する方向に搬送しながら、前記不織布に熱風を吹き付けることによって前記不織布を加熱して前記不織布の嵩を回復する加熱ユニットと、を有し、
平面視で前記第1方向と交差する方向を第2方向とした場合に、
前記加熱ユニットが、前記第1搬送経路の直上の位置、又は前記第1搬送経路から前記第2方向にずれた位置に配置されていることを特徴とする吸収性物品の製造装置。 - 請求項1に記載の吸収性物品の製造装置であって、
前記加熱ユニットは、前記第1搬送経路から前記第2方向にずれた位置に配置されており、
前記加熱ユニットで加熱されて前記嵩が回復された前記不織布は、第2搬送経路によって前記第2方向へ搬送されて、前記第1搬送経路に投入されることを特徴とする吸収性物品の製造装置。 - 請求項1に記載の吸収性物品の製造装置であって、
前記加熱ユニットは前記第1搬送経路の直上に配置されており、
前記加熱ユニットでの前記不織布の搬送経路は、水平方向に沿っていることを特徴とする吸収性物品の製造装置。 - 請求項1乃至3の何れかに記載の吸収性物品の製造装置であって、
前記加熱ユニットは、前記不織布の入口及び前記不織布の出口を具備したケース部材を有し、
前記ケース部材における前記入口側の部分及び前記出口側の部分のうちの一方は、他方に向けて前記熱風を前記ケース部材内の空間に噴射する噴射口を有し、
前記他方は、前記不織布の両面のうちの一方の面に接触しながら流れた前記熱風を、前記ケース部材から排出する排出口を有することを特徴とする吸収性物品の製造装置。 - 請求項1乃至4の何れかに記載の吸収性物品の製造装置であって、
前記熱風によって加熱された前記不織布を、前記第1搬送経路に投入する前に冷却する冷却ユニットを有し、
前記冷却ユニットは、前記不織布の入口及び前記不織布の出口を具備したケース部材を有し、
前記ケース部材における前記入口側の部分及び前記出口側の部分のうちの一方は、他方に向けて冷却用の風を前記ケース部材内の空間に噴射する噴射口を有し、
前記他方は、前記不織布の両面のうちの一方の面に接触しながら流れた前記風を、前記ケース部材から排出する排出口を有することを特徴とする吸収性物品の製造装置。 - 平面視で第1方向に沿って一直線に配された第1搬送経路に沿って搬送される吸収性物品の中間製品に対して複数の処理装置で処理を行うことによって吸収性物品を製造する製造装置の改造方法であって、
平面視で前記第1方向と交差する方向を第2方向とすることと、
前記吸収性物品の部品となる帯状の不織布を当該不織布が連続する方向に搬送しながら、前記不織布に熱風を吹き付けることによって前記不織布を加熱して前記不織布の嵩を回復する加熱ユニットを、前記第1搬送経路の直上の位置、又は前記第1搬送経路から前記第2方向にずれた位置に配置することと、を有することを特徴とする吸収性物品の製造装置の改造方法。
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2014
- 2014-09-22 WO PCT/JP2014/075115 patent/WO2015056535A1/ja active Application Filing
- 2014-09-22 US US15/029,626 patent/US10449096B2/en active Active
- 2014-09-22 EP EP14854715.1A patent/EP3058909B1/en active Active
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BR112016008398A2 (ja) | 2020-04-28 |
US10449096B2 (en) | 2019-10-22 |
CN104499236B (zh) | 2016-05-11 |
JP5707467B2 (ja) | 2015-04-30 |
EP3058909A4 (en) | 2016-09-14 |
JP2015077330A (ja) | 2015-04-23 |
EP3058909B1 (en) | 2019-03-06 |
CN104499236A (zh) | 2015-04-08 |
US20160228301A1 (en) | 2016-08-11 |
EP3058909A1 (en) | 2016-08-24 |
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