TWI694813B - Manufacturing method and manufacturing device of composite sheet related to absorbent articles - Google Patents
Manufacturing method and manufacturing device of composite sheet related to absorbent articles Download PDFInfo
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- TWI694813B TWI694813B TW104111626A TW104111626A TWI694813B TW I694813 B TWI694813 B TW I694813B TW 104111626 A TW104111626 A TW 104111626A TW 104111626 A TW104111626 A TW 104111626A TW I694813 B TWI694813 B TW I694813B
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- 239000002250 absorbent Substances 0.000 title claims abstract description 92
- 230000002745 absorbent Effects 0.000 title claims abstract description 91
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 69
- 239000002131 composite material Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 36
- 230000008602 contraction Effects 0.000 claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims description 64
- 238000005304 joining Methods 0.000 claims description 31
- 230000015572 biosynthetic process Effects 0.000 claims description 18
- 238000002360 preparation method Methods 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 description 108
- 230000007246 mechanism Effects 0.000 description 64
- 230000037303 wrinkles Effects 0.000 description 37
- 239000000835 fiber Substances 0.000 description 21
- 238000005520 cutting process Methods 0.000 description 18
- 238000003466 welding Methods 0.000 description 17
- 239000004745 nonwoven fabric Substances 0.000 description 16
- 230000008569 process Effects 0.000 description 15
- 238000011144 upstream manufacturing Methods 0.000 description 14
- 239000004743 Polypropylene Substances 0.000 description 10
- 239000011162 core material Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 229920001155 polypropylene Polymers 0.000 description 10
- 230000032258 transport Effects 0.000 description 10
- 238000007789 sealing Methods 0.000 description 7
- 238000004080 punching Methods 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 229920001169 thermoplastic Polymers 0.000 description 4
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 238000002788 crimping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000004177 elastic tissue Anatomy 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000013001 point bending Methods 0.000 description 3
- 230000001568 sexual effect Effects 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- 210000002700 urine Anatomy 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004750 melt-blown nonwoven Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 0 CCI[C@](CCCC(C1)C1C(C)CC*=C)CCN Chemical compound CCI[C@](CCCC(C1)C1C(C)CC*=C)CCN 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 0.000 description 1
- 239000004583 superabsorbent polymers (SAPs) Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Laminated Bodies (AREA)
Abstract
本發明的複合薄片的製造方法為具有:吸收性物品相關的伸縮性薄片,及伸長性比上述伸縮性薄片低的低伸長性薄片的複合薄片的製造方法。該方法具有:準備使得朝預定方向延伸的第1部份與較第1部份不延伸的第2部份在上述預定方向交互排列所形成的低伸長性薄片的步驟,及以在上述伸縮性薄片朝著伸縮方向伸長的狀態,使上述伸縮方向在上述預定方向一致並對上述低伸長性薄片透過複數接合部固定上述伸縮性薄片的步驟。上述固定步驟是將上述複數接合部朝著上述伸縮方向及與上述伸縮方向交叉的方向的兩方向呈非連續分散地設置,並設置上述接合部,使得在上述複數接合部之中位在與上述伸縮方向相鄰的接合部彼此之間的非接合部,分別至少包含有各一個上述第1部份的上述預定方向的中央位置與上述第2部份的上述預定方向的中央位置。 The method of manufacturing a composite sheet of the present invention is a method of manufacturing a composite sheet having an elastic sheet related to an absorbent article and a low-elongation sheet having a lower extensibility than the above-mentioned elastic sheet. The method includes the steps of preparing a low-elongation sheet formed by alternately arranging a first portion extending in a predetermined direction and a second portion not extending from the first portion in the predetermined direction, and In a state where the sheet is stretched in the stretch direction, the stretch direction is aligned in the predetermined direction, and the low stretch sheet is fixed to the stretch sheet through a plurality of joints. The fixing step is to disperse the plurality of joints discontinuously in both directions of the telescopic direction and the direction intersecting the telescopic direction, and provide the joints so that The non-joint portions between the joint portions adjacent to each other in the expansion and contraction direction respectively include at least one central position of the first portion in the predetermined direction and a central position of the second portion in the predetermined direction.
Description
本發明是關於用後即棄式紙尿片等的吸收性物品相關之複合薄片的製造方法及製造裝置。 The present invention relates to a method and apparatus for manufacturing composite sheets related to absorbent articles such as disposable diapers.
作為吸收性物品之一例的用後即棄式紙尿片的製造生產線是進行將低伸長性薄片重疊並固定在以預定伸長倍率的伸長狀態朝著搬運方向搬運的伸縮性薄片來生成複合薄片。並且,相關的複合薄片是通常一邊維持著上述的伸長狀態並朝著下步驟搬運,該下步驟是對相關伸長狀態的複合薄片,依序進行安裝吸收液體之吸收性主體等的適當加工處理,最後裁斷成為製品的紙尿片的單位來製造同紙尿片。 A production line for disposable diapers as an example of an absorbent article is to produce a composite sheet by stacking and fixing low-elongation sheets to a stretchable sheet that is conveyed in the conveying direction in an extended state at a predetermined rate of expansion. In addition, the related composite sheet is usually transported toward the next step while maintaining the above-mentioned extended state, and this next step is to sequentially perform appropriate processing on the related extended sheet in order to mount an absorbent body that absorbs liquid, etc., Finally, the unit of the paper diaper that becomes the product is cut to manufacture the same paper diaper.
在此,伴隨著相關的裁斷處理,解除複合薄片的伸長朝著搬運方向收縮時,在以該複合薄片為主材的紙尿片的外包裝部份,賦予沿著與搬運方向交叉之方向的複數皺摺。並且,藉此所製造的紙尿片至少可將該皺摺收縮至完全伸展地伸長的形態提供至市場。其結果,著用人等的使用者可使用具伸展收縮規格的紙尿片。 Here, when the extension of the composite sheet is released and contracted in the conveying direction along with the related cutting process, the outer portion of the diaper that uses the composite sheet as the main material is given along the direction crossing the conveying direction. Plural folds. In addition, the diaper manufactured by this method can provide the market with at least the form in which the wrinkle is contracted to be fully extended. As a result, a user such as a user can make the tool expand and contract a paper diaper of a specification.
[專利文獻1]日本特開2007-105453號公報 [Patent Document 1] Japanese Patent Laid-Open No. 2007-105453
在此,相關的皺摺是形成在眼睛可看見的部份。因此,只要賦予美觀的該皺褶,即可以使紙尿片美觀而提升購買人的吸引力。 Here, the relevant wrinkles are formed in the visible part of the eye. Therefore, as long as the wrinkle is given a beautiful appearance, the diaper can be made beautiful and the attractiveness of the purchaser can be enhanced.
本發明是鑒於如上述習知的問題所研創而成,其目的是對吸收性物品相關的複合薄片形成美觀的皺摺。 The present invention was developed in view of the above-mentioned conventional problems, and its purpose is to form beautiful wrinkles on composite sheets related to absorbent articles.
為達成上述目的之主要發明的吸收性物品相關之複合薄片的製造方法,具有:吸收性物品相關的伸縮性薄片,及伸長性比上述伸縮性薄片低的低伸長性薄片的複合薄片的製造方法,其特徵為:該方法具有:準備使得朝預定方向延伸的第1部份與較第1部份不延伸的第2部份在上述預定方向交互排列所形成的上述低伸長性薄片的步驟,及以在上述伸縮性薄片朝著伸縮方向伸長的狀態,使上
述伸縮方向在上述預定方向一致並對上述低伸長性薄片透過複數接合部固定上述伸縮性薄片的步驟,上述固定步驟是將上述複數接合部朝著上述伸縮方向及與上述伸縮方向交叉的方向的兩方向呈非連續分散地設置,並設置上述接合部,使得在上述複數接合部之中位在與上述伸縮方向相鄰的接合部彼此之間的非接合部,分別至少包含有各一個上述第1部份的上述預定方向的中央位置與上述第2部份的上述預定方向的中央位置。
A method of manufacturing a composite sheet related to an absorbent article of the main invention for achieving the above object includes a method of manufacturing a composite sheet having an elastic sheet related to an absorbent article and a low-elongation sheet having a lower extensibility than the above-mentioned elastic sheet The method is characterized in that the method has the steps of preparing the low-elongation sheet formed by alternately arranging the first portion extending in a predetermined direction and the second portion not extending than the first portion in the predetermined direction, And in a state where the above-mentioned stretchable sheet is stretched in the stretching direction, the upper
The stretching direction coincides with the predetermined direction and the step of fixing the stretchable sheet through the plurality of joints of the low-elongation sheet, the fixing step is to move the plurality of joints toward the stretching direction and a direction crossing the stretching direction The two directions are arranged discontinuously dispersed, and the joint portions are provided so that the non-joint portions between the joint portions adjacent to the telescopic direction among the plurality of joint portions each include at least one of the first The central position of the
並且,複合薄片的製造裝置,具有:吸收性物品相關的伸縮性薄片,及伸長性比上述伸縮性薄片低的低伸長性薄片的複合薄片的製造裝置,其特徵為,具有:準備使得朝預定方向延伸的第1部份與較第1部份不延伸的第2部份在上述預定方向交互排列所形成的上述低伸長性薄片的裝置,及以在上述伸縮性薄片朝著伸縮方向伸長的狀態,使上述伸縮方向在上述預定方向一致並對上述低伸長性薄片透過複數接合部固定上述伸縮性薄片的裝置,上述固定裝置是將上述複數接合部朝著上述伸縮方向及與上述伸縮方向交叉的方向的兩方向呈非連續分散地設置,並設置上述接合部,使得在上述複數接合部之中位在與上述伸縮方向相鄰的接合部彼此之間的非接合部,分別至少包含有各一個上述第1部份的上述預定方向的中央位置與上述第2部份的上述預定方向的中央位置。 Furthermore, a manufacturing device of a composite sheet includes an elastic sheet related to an absorbent article, and a manufacturing device of a composite sheet of a low-elongation sheet having a lower extensibility than the above-mentioned elastic sheet, characterized by having: The first portion extending in the direction and the second portion not extending than the first portion are arranged alternately in the predetermined direction to form the low-elongation sheet, and the stretchable sheet extends in the stretching direction In the state, the stretching direction is aligned with the predetermined direction, and the low-elongation sheet is fixed to the stretchable sheet through a plurality of joints, and the fixing device is to move the plurality of joints in the stretching direction and cross the stretching direction The two directions of the direction are discontinuously dispersed, and the joint portions are provided so that the non-joint portions between the joint portions adjacent to the telescopic direction among the plurality of joint portions each include at least each A central position in the predetermined direction of the first part and a central position in the predetermined direction of the second part.
對於本發明的其他特徵根據本說明書及添附圖式的記 載可得以明確。 Other features of the present invention are based on the description of this specification and attached drawings It can be made clear.
根據本發明,在吸收性物品相關的複合薄片可形成美觀的皺摺。 According to the present invention, the composite sheet related to the absorbent article can form an aesthetic wrinkle.
1‧‧‧用後即棄式紙尿片(吸收性物品) 1‧‧‧ disposable diapers (absorbent articles)
3‧‧‧吸收性主體 3‧‧‧ Absorbent subject
3e‧‧‧端部 3e‧‧‧End
3a‧‧‧吸收性主體的連續體 3a‧‧‧Continuous body of absorptive subject
3c‧‧‧吸收性芯子 3c‧‧‧absorbent core
4‧‧‧上層薄片 4‧‧‧ Upper slice
4eL‧‧‧突出的部份 4eL‧‧‧ Highlighted part
5‧‧‧防漏薄片 5‧‧‧Leakproof sheet
5eL‧‧‧突出的部份 5eL‧‧‧ Highlighted part
5eW‧‧‧突出的部份 5eW‧‧‧ Highlighted parts
7‧‧‧外包裝薄片 7‧‧‧Outer packaging sheet
7HL‧‧‧腳周圍開口部 7HL‧‧‧Opening around the foot
7f‧‧‧腹側部 7f‧‧‧ ventral
7b‧‧‧背側部 7b‧‧‧Back side
7c‧‧‧***部 7c‧‧‧Lower crotch
7eW‧‧‧端部 7eW‧‧‧End
7a‧‧‧外包裝薄片的連續薄片(複合薄片、外包裝薄片、基材薄片) 7a‧‧‧Continuous sheet of outer packaging sheet (composite sheet, outer packaging sheet, substrate sheet)
8‧‧‧內層薄片(伸縮性薄片) 8‧‧‧Inner sheet (stretchable sheet)
8a‧‧‧伸縮性薄片的連續薄片(伸縮性薄片) 8a‧‧‧Continuous sheet of stretchable sheet (stretchable sheet)
8a’‧‧‧伸縮性薄片的連續薄片(伸縮性薄片) 8a’‧‧‧Continuous sheet of stretchable sheet (stretchable sheet)
9‧‧‧外層薄片(低伸長性薄片) 9‧‧‧Outer sheet (low elongation sheet)
9a‧‧‧低伸長性薄片的連續薄片(低伸長性薄片) 9a‧‧‧Continuous sheet of low-elongation sheet (low-elongation sheet)
9a’‧‧‧低伸長性薄片的連續薄片(低伸長性薄片) 9a’‧‧‧Continuous sheet of low-elongation sheet (low-elongation sheet)
9a1‧‧‧第1部份
9a1‧‧‧
9a1’‧‧‧第1部份
9a1’‧‧‧
9a2‧‧‧第2部份
9a2‧‧‧
9a2’‧‧‧第2部份
9a2’‧‧‧
10‧‧‧外包裝薄片生成處理部 10‧‧‧Outer packaging sheet generation and processing department
11‧‧‧加工裝置 11‧‧‧Processing device
12‧‧‧搬運機構 12‧‧‧Handling mechanism
12R‧‧‧搬運輥 12R‧‧‧handling roller
13‧‧‧波形輥機構 13‧‧‧wave roller mechanism
13u‧‧‧波形輥(輥) 13u‧‧‧wave roller (roller)
13u’‧‧‧輥 13u’‧‧‧roll
13d‧‧‧波形輥(輥) 13d‧‧‧wave roller (roller)
13d’‧‧‧輥 13d’‧‧‧roll
13m‧‧‧山部 13m
13m’‧‧‧大徑部份 13m’‧‧‧large diameter part
13v‧‧‧谷部 13v‧‧‧Tanibu
13v’‧‧‧小徑部份 13v’‧‧‧path part
14a‧‧‧預熱輥 14a‧‧‧Preheating roller
15‧‧‧接合裝置 15‧‧‧joining device
16‧‧‧夾輥機構 16‧‧‧pinch mechanism
16R‧‧‧夾輥 16R‧‧‧Pinch roller
17‧‧‧超音波熔敷裝置 17‧‧‧Ultrasonic welding device
17a‧‧‧鑽輥 17a‧‧‧Drill roll
17at‧‧‧突部 17at
17an‧‧‧非存在部分 17an‧‧‧non-existent part
17h‧‧‧發聲器 17h‧‧‧Sound generator
17hs‧‧‧振動面 17hs‧‧‧Vibration surface
18R‧‧‧搬運輥 18R‧‧‧handling roller
19u‧‧‧上輥 19u‧‧‧up roller
19d‧‧‧下輥 19d‧‧‧Lower roller
20‧‧‧腳周圍開口部形成處理部 20‧‧‧The opening around the foot forms the treatment part
21‧‧‧衝切裝置 21‧‧‧Punching device
21c‧‧‧刀刃 21c‧‧‧Blade
21u‧‧‧衝切輥 21u‧‧‧Cutting roller
21d‧‧‧鑽輥 21d‧‧‧Drill roll
30‧‧‧外包裝薄片收縮處理部(收縮裝置) 30‧‧‧Shrink processing section of outer packaging sheet (shrinking device)
30’‧‧‧外包裝薄片收縮處理部(收縮裝置) 30’‧‧‧Shrink processing section (shrinking device)
31‧‧‧上游側夾輥機構 31‧‧‧Upstream side pinch mechanism
31u‧‧‧上夾輥 31u‧‧‧Up pinch roller
31d‧‧‧下夾輥 31d‧‧‧Lower nip roller
33‧‧‧下游側夾輥機構 33‧‧‧ Downstream nip roller mechanism
33u‧‧‧上夾輥 33u‧‧‧Pinch roller
31’‧‧‧S鈎掛輥機構 31’‧‧‧S hook roller mechanism
31u’‧‧‧上輥 31u’‧‧‧up roller
31d’‧‧‧下輥 31d’‧‧‧Lower roller
33’‧‧‧S鈎掛輥機構 33’‧‧‧S hook roller mechanism
33u’‧‧‧上輥 33u’‧‧‧upper roller
33d’‧‧‧下輥 33d’‧‧‧Lower roller
40‧‧‧吸收性主體安裝處理部 40‧‧‧ Absorbent body installation and processing department
42‧‧‧旋轉滾筒 42‧‧‧Rotating drum
43‧‧‧保持墊 43‧‧‧Retaining pad
45‧‧‧裁斷裝置 45‧‧‧Cutting device
50‧‧‧二折處理部 50‧‧‧Two-fold processing department
60‧‧‧端密封處理部 60‧‧‧End Sealing Department
61‧‧‧熱密封加工裝置 61‧‧‧Heat seal processing device
61u‧‧‧上輥 61u‧‧‧upper roll
61d‧‧‧下輥 61d‧‧‧Lower roller
61sp‧‧‧密封圖案部 61sp‧‧‧Seal Design Department
70‧‧‧分割處理部 70‧‧‧Division Processing Department
71‧‧‧旋轉切削裝置 71‧‧‧Rotary cutting device
71c‧‧‧切削刃 71c‧‧‧Cutting edge
71u‧‧‧上輥(切削輥) 71u‧‧‧upper roller (cutting roller)
71d‧‧‧下輥(鑽輥) 71d‧‧‧lower roller (drill roller)
HB‧‧‧胴周圍開口部 HB‧‧‧Opening around the trunk
HL‧‧‧腳周圍開口部 HL‧‧‧Opening around the foot
CV‧‧‧搬運機構 CV‧‧‧carrying mechanism
j‧‧‧接合部 j‧‧‧Joint
j’‧‧‧接合部 j’‧‧‧Joint
jn‧‧‧非接合部 jn‧‧‧non-joint part
jn’‧‧‧非接合部 jn’‧‧‧non-joint part
Rj‧‧‧非接合部列 Rj‧‧‧non-joined series
j3‧‧‧接合部 j3‧‧‧Joint
j3L‧‧‧縱長帶狀部份 j3L‧‧‧Longitudinal band
j3W‧‧‧橫長帶狀部份 j3W‧‧‧horizontal strip
j3C‧‧‧接合部 j3C‧‧‧Joint
C9a1‧‧‧第1部份的中央位置
C9a1‧‧‧Central position of
C9a1’‧‧‧第1部份的中央位置
C9a1’‧‧‧ Central position of
C9a2‧‧‧第2部份的中央位置
C9a2‧‧‧Central position of
C9a2’‧‧‧第2部份的中央位置
C9a2’‧‧‧Central position of
Ab‧‧‧一部份 Ab‧‧‧Part
LM‧‧‧製造生產線 LM‧‧‧Manufacturing production line
Pk‧‧‧預定位置 Pk‧‧‧predetermined location
S1‧‧‧第1位置 S1‧‧‧First position
S2‧‧‧第2位置 S2‧‧‧ 2nd position
jes‧‧‧端密封部 jes‧‧‧End seal
R30‧‧‧搬運路徑 R30‧‧‧Handling path
第1A圖是作為本實施形態相關的吸收性物品之一例的褲子型紙尿片1的概略透視圖,第1B圖是從肌膚側顯示展開狀態之紙尿片1的概略上視圖。
Fig. 1A is a schematic perspective view of a pants-
第2圖為分解展開狀態之紙尿片1表示的概略透視圖。
Fig. 2 is a schematic perspective view showing the
第3圖為賦予美觀皺褶而設法的說明圖,從外層薄片9側顯示伸長狀態的外包裝薄片7的概略放大圖。 FIG. 3 is an explanatory view for trying to give a beautiful wrinkle, and shows a schematic enlarged view of the outer packaging sheet 7 in an extended state from the outer layer sheet 9 side.
第4A圖為製造紙尿片1的製造生產線LM的概略側視圖,第4B圖為製造紙尿片1的樣子的概略上視圖。
FIG. 4A is a schematic side view of the manufacturing line LM for manufacturing the
第5圖為外包裝薄片生成處理部10的概略側視圖。
FIG. 5 is a schematic side view of the packaging sheet
第6圖為部份放大表示之加工裝置11的概略側視圖。
FIG. 6 is a schematic side view of the
第7圖為第6圖中的VII-VII箭頭方向圖。 FIG. 7 is a VII-VII arrow direction diagram in FIG. 6.
第8圖是將鑽輥17a的外圍面朝旋轉方向展開顯示的放大圖。
Fig. 8 is an enlarged view showing the outer peripheral surface of the
第9圖是以設有熱密封加工裝置或壓接加工裝置來取
代外包裝薄片生成處理部10之超音波熔敷裝置17的構成的概略側視圖。
Figure 9 is taken with a heat sealing processing device or a crimping processing device
A schematic side view of the configuration of the
第10圖為其他實施形態的說明圖,表示使伸縮性薄片8a的伸縮方向沿著CD方向時的處理狀態的透視影像圖。
Fig. 10 is an explanatory diagram of another embodiment, and is a perspective image view showing a processing state when the stretching direction of the
第11A圖是從MD方向的下游側顯示該其他實施形態相關的輥機構13’的概略前視圖,第11B圖為第11A圖中的B-B箭頭方向圖。 Fig. 11A is a schematic front view showing the roller mechanism 13' according to this other embodiment from the downstream side in the MD direction, and Fig. 11B is a B-B arrow direction view in Fig. 11A.
第12圖為外包裝薄片收縮處理部30的變形例30’的概略側視圖。
Fig. 12 is a schematic side view of a modified example 30' of the outer packaging sheet
根據本說明書及添附圖示的記載,至少可使以下的事項獲得明確。 According to the description in this specification and the accompanying drawings, at least the following matters can be clarified.
一種吸收性物品相關之複合薄片的製造方法為具有:吸收性物品相關的伸縮性薄片,及伸長性比上述伸縮性薄片低的低伸長性薄片的複合薄片的製造方法,其特徵為:該方法具有:準備使得朝預定方向延伸的第1部份與較第1部份不延伸的第2部份在上述預定方向交互排列所形成的上述低伸長性薄片的步驟,及以在上述伸縮性薄片朝著伸縮方向伸長的狀態,使上述伸縮方向在上述預定方向一致並對上述低伸長性薄片透過複數接合部固定上述伸縮性薄片的步驟,上述固定步驟是將上述複數接合部朝著上述伸縮方向 及與上述伸縮方向交叉的方向的兩方向呈非連續分散地設置,並設置上述接合部,使得在上述複數接合部之中位在與上述伸縮方向相鄰的接合部彼此之間的非接合部,分別至少包含有各一個上述第1部份的上述預定方向的中央位置與上述第2部份的上述預定方向的中央位置。 A method of manufacturing a composite sheet related to an absorbent article is a method of manufacturing a composite sheet having a stretchable sheet related to an absorbent article and a low-elongation sheet having a lower extensibility than the above-mentioned stretchable sheet, characterized by the method The method includes: preparing the first portion extending in a predetermined direction and the second portion not extending from the first portion to alternately arrange the formed low-elongation sheet in the predetermined direction, and the stretchable sheet A state of being stretched toward the stretching direction, making the stretching direction coincide with the predetermined direction, and fixing the stretchable sheet through the plural joint portions of the low-stretchable sheet, the fixing step is to move the plural joint portions toward the stretching direction And two directions intersecting the telescopic direction are provided in a discontinuously dispersed manner, and the joint portion is provided so that the non-joint portion between the joint portions adjacent to the telescopic direction among the plural joint portions , Each of which includes at least one central position of the first portion in the predetermined direction and a central position of the second portion in the predetermined direction.
根據以上的吸收性物品相關之複合薄片的製造方法,可在複合薄片形成美觀的皺摺。詳細是如以下說明。 According to the manufacturing method of the composite sheet related to the above absorbent article, it is possible to form a beautiful wrinkle on the composite sheet. The details are as follows.
首先,上述的準備步驟雖是準備具有上述第1部份與第2部份的低伸長性薄片,但是同薄片根據該第1部份的延伸量與第2部份的延伸量的差而具有剛性差。因此,根據相關的剛性差容易將低伸長性薄片朝著上述預定方向壓曲。 First of all, although the above preparation step is to prepare the low-elongation sheet having the first and second parts, the same sheet has a difference according to the difference between the elongation of the first part and the elongation of the second part Poor rigidity. Therefore, it is easy to buckle the low-elongation sheet in the above-mentioned predetermined direction according to the related rigidity difference.
另一方面,上述的固定步驟雖是對該低伸長性薄片固定已伸長狀態的伸縮性薄片,但相關的固定後,一旦解除該已伸長的狀態時,伸縮性薄片朝著成為低伸長性薄片的上述預定方向收縮。如此一來,透過兩薄片的接合部賦予從伸縮性薄片朝著低伸長性薄片之上述預定方向的收縮力,但相關的收縮力是以壓縮的外力沿上述預定方向朝著低伸長性薄片作用。因此,該低伸長性薄片根據上述的剛性差被壓曲而賦予皺摺。 On the other hand, although the above-mentioned fixing step is to fix the stretchable sheet in the stretched state to the low-elongation sheet, when the stretched state is released after the related fixation, the stretchable sheet becomes a low-stretchable sheet The above-mentioned predetermined direction shrinks. In this way, the contraction force from the stretchable sheet toward the low-elongation sheet in the above-mentioned predetermined direction is imparted through the junction of the two sheets, but the relevant contraction force acts on the low-elongation sheet in the above-mentioned predetermined direction by the external force of compression . Therefore, the low-elongation sheet is buckled according to the above-mentioned difference in rigidity to give wrinkles.
在此,如上述,相關的剛性差雖是根據第1部份與第2部份的兩者而產生,但相關的第1部份的中央位置與第2部份的中央位置是分別至少各一個包含於上述非接合 部。因此,根據相關的剛性差,低伸長性薄片中的非接合部可迅速被壓曲,其結果,可對該非接合部迅速賦予皺摺。並且,可在複合薄片形成美觀的皺褶。 Here, as described above, although the related rigidity difference is generated based on both the first part and the second part, the central position of the related first part and the central position of the second part are at least respectively One included in the above non-joint unit. Therefore, the non-joined portion in the low-elongation sheet can be quickly buckled according to the related stiffness, and as a result, the non-joined portion can be quickly wrinkled. Moreover, beautiful wrinkles can be formed on the composite sheet.
上述吸收性物品相關之複合薄片的製造方法中,上述準備步驟是以準備形成有使複數的上述第2部份沿著上述預定方向以預定的形成間距排列的上述低伸長性薄片,上述固定步驟是以設置上述接合部使得上述非接合部的上述伸縮方向的長度大於上述形成間距為佳。 In the method for manufacturing a composite sheet related to the absorbent article, the preparation step is to prepare the low-elongation sheet in which a plurality of the second portions are arranged at a predetermined formation pitch along the predetermined direction, and the fixing step It is preferable to provide the joining portion so that the length of the non-joining portion in the direction of expansion and contraction is greater than the formation pitch.
根據上述吸收性物品相關的複合薄片的製造方法,非接合部的長度大於第2部份沿著預定方向排列的上述形成間距。因此,在非接合部份至少可包含各一個第1部份的中央位置與第2部份的中央位置,藉此,可對低伸長性薄片中的非接合部迅速賦予皺摺。 According to the method of manufacturing a composite sheet related to the above-mentioned absorbent article, the length of the non-joint portion is larger than the above-mentioned forming pitch where the second portion is arranged along the predetermined direction. Therefore, the non-joined portion may include at least a central position of the first portion and a central position of the second portion, whereby the non-joined portion in the low-elongation sheet can be quickly wrinkled.
上述吸收性物品相關之複合薄片的製造方法中,設置上述接合部,以使得上述第1部份的上述預定方向的中央位置與上述第2部份的上述預定方向的中央位置分別各複數個包含於上述非接合部為佳。 In the method for manufacturing a composite sheet related to the absorbent article, the joining portion is provided so that the central position in the predetermined direction of the first portion and the central position in the predetermined direction of the second portion each include a plurality of It is preferable for the non-joining part.
根據上述吸收性物品相關的複合薄片的製造方法,在非接合部分別各複數個包含有第1部份的中央位置與第2部份的中央位置。因此,相關的非接合部在上述預定方向的複數位置產生剛性差,因此,低伸長性薄片中的非接合部在複數位置可迅速被壓曲,其結果,可對該非 接合部賦予較多皺摺。 According to the method for manufacturing a composite sheet related to the above-mentioned absorbent article, each of the non-joint portions includes a central position of the first portion and a central position of the second portion. Therefore, the relevant non-joined portion has a difference in rigidity at a plurality of positions in the predetermined direction. Therefore, the non-joined portion in the low-elongation sheet can be quickly buckled at the plurality of positions, and as a result, The joint portion gives more wrinkles.
相關之複合薄片的製造方法中,上述準備步驟是以準備形成有使複數的上述第2部份沿著上述預定方向以預定的形成間距排列的上述低伸長性薄片,上述固定步驟是以設置上述接合部使得上述非接合部的上述伸縮方向的長度是大於上述形成間距的複數倍大為佳。 In a related method of manufacturing a composite sheet, the preparation step is to prepare the low-elongation sheet in which a plurality of the second portions are arranged at a predetermined formation pitch along the predetermined direction, and the fixing step is to provide the The joining portion preferably has a length in the expansion and contraction direction of the non-joining portion that is greater than a multiple of the forming pitch.
根據如以上吸收性物品相關的複合薄片的製造方法,非接合部的長度為大於上述第2部份的形成間距的整數倍大。因此,在非接合部至少可分別包含各複數個第1部份的中央位置與第2部份的中央位置,藉此,可對低伸長性薄片中的非接合部迅速賦予皺摺。 According to the method of manufacturing a composite sheet related to an absorbent article as described above, the length of the non-joint portion is greater than an integral multiple of the formation pitch of the second portion. Therefore, the non-joined portion can include at least a plurality of central positions of the first portion and the second portion, respectively, thereby allowing wrinkles to be quickly provided to the non-joined portions in the low-elongation sheet.
上述吸收性物品相關的複合薄片的製造方法中,上述低伸長性薄片是以連續於上述第1預定方向的連續薄片,上述準備步驟是以上述預定方向為搬運方向進行上述低伸長性薄片的搬運,並在該搬運中的上述低伸長性薄片形成上述第1部份與上述第2部份,不捲繞形成有上述第1部份與上述第2部份的上述低伸長性薄片,朝著進行上述固定步驟的位置搬運為佳。 In the method of manufacturing a composite sheet related to the absorbent article, the low-elongation sheet is a continuous sheet that is continuous in the first predetermined direction, and the preparation step is to transport the low-elongation sheet with the predetermined direction as the transport direction , And the low-elongation sheet in the conveyance forms the first part and the second part, without winding the low-elongation sheet formed with the first part and the second part, toward The location where the above fixing steps are carried is preferred.
根據如以上吸收性物品相關的複合薄片的製造方法,準備步驟中,在低伸長性薄片形成第1部份與第 2部份。因此,即使是從最初不具有第1部份與第2部份的規格的低伸長性薄片,仍可作為該複合薄片的材料使用。又,在上述第1部份及第2部份的形成後不捲繞低伸長性薄片,可將同薄片的狀態朝著進行上述固定步驟的位置搬運。因此,可有效防止伴隨上述第1部份及第2部份的形成所增加之低伸長性薄片的高度,因捲繞而被壓潰,結果,可將低伸長性薄片加工成具備源於精度高之柔軟度的薄片。 According to the manufacturing method of the composite sheet related to the absorbent article as above, in the preparation step, the first part and the first 2 parts. Therefore, even a low-elongation sheet that does not originally have the specifications of the first and second parts can still be used as the material of the composite sheet. Moreover, after forming the first part and the second part, the low-elongation sheet is not wound, and the state of the same sheet can be transported toward the position where the fixing step is performed. Therefore, it is possible to effectively prevent the height of the low-elongation sheet that is increased due to the formation of the above-mentioned first and second parts from being crushed by winding, and as a result, the low-elongation sheet can be processed to have accuracy derived from Highly soft flakes.
上述吸收性物品相關的複合薄片的製造方法中,上述低伸長性薄片是以連續於上述預定方向的連續薄片,上述伸縮性薄片是以連續於上述伸縮方向的連續薄片,在上述固定步驟中,上述伸縮性薄片是以上述伸縮方向為搬運方向進行搬運,固定有上述低伸長性薄片的上述伸縮性薄片,在上述固定步驟之後通過上述搬運方向的預定位置時,上述伸縮性薄片之中以使得通過上述預定位置的部份依序朝上述伸縮方向收縮為佳。 In the method of manufacturing a composite sheet related to the absorbent article, the low-elongation sheet is a continuous sheet continuous in the predetermined direction, and the stretchable sheet is a continuous sheet continuous in the stretching direction. In the fixing step, The stretchable sheet is transported with the stretchable direction as the transport direction, and the stretchable sheet to which the low-elongation sheet is fixed is passed through a predetermined position in the transport direction after the fixing step. It is preferable that the portion passing through the predetermined position sequentially shrinks in the direction of expansion and contraction.
根據如以上吸收性物品相關的複合薄片的製造方法,固定有低伸長性薄片的伸縮性薄片,在通過搬運方向的上述預定位置時,伸縮性薄片之中使得通過上述預定位置的部份依序朝上述伸縮方向收縮。藉此,低伸長性 薄片的第1部份及第2部份通過該預定位置時,在同薄片上依序形成皺摺,其結果,複合薄片可美觀地形成整齊的皺摺。 According to the method of manufacturing a composite sheet related to an absorbent article as described above, when the stretchable sheet to which the low-elongation sheet is fixed passes through the predetermined position in the conveying direction, the portion of the stretchable sheet that passes the predetermined position in order Shrink in the direction of expansion and contraction. With this, low elongation When the first part and the second part of the sheet pass through the predetermined position, wrinkles are sequentially formed on the same sheet, and as a result, the composite sheet can form neat wrinkles beautifully.
上述吸收性物品相關的複合薄片的製造方法中,上述準備步驟是以在和上述預定方向交叉的方向的預定位置,一邊產生不朝著上述預定方向延伸的部份,並在上述低伸長性薄片形成上述第1部份與上述第2部份為佳。 In the method of manufacturing a composite sheet related to the absorbent article, the preparation step is to generate a portion that does not extend in the predetermined direction at a predetermined position in a direction that intersects the predetermined direction. It is preferable to form the first part and the second part.
根據如以上吸收性物品相關的複合薄片的製造方法,相對於低伸長性薄片在將第1部份及第2部份排列於預定方向形成時,在與同預定方向交叉的方向的預定位置,產生不朝著同預定方向延伸的部份。並且,在該未延伸的部份未發現有伸縮性。因此,可一邊整體地抑制低伸縮性薄片之伸縮性的發現,並可在同薄片上形成上述第1部份及第2部份。 According to the method of manufacturing a composite sheet related to an absorbent article as described above, when forming the first part and the second part in a predetermined direction with respect to the low-elongation sheet, it is at a predetermined position in a direction crossing the predetermined direction, A portion that does not extend in the same predetermined direction is generated. In addition, no stretchability was found in the unstretched portion. Therefore, it is possible to suppress the discovery of the stretchability of the low-stretchable sheet as a whole, and it is possible to form the first part and the second part on the same sheet.
上述吸收性物品相關的複合薄片的製造方法中,上述低伸長性薄片是以連續於上述預定方向的連續薄片,在一邊使彼此的外圍面相對並使得上述低伸長性薄片通過沿著上述搬運方向旋轉的一對輥彼此之間,藉此形成上述第1部份及上述第2部份,上述一對輥是以分別沿著旋轉方向而在各外圍面交互 形成有山部與谷部波形輥,並且上述一對輥彼此是使彼此的上述山部咬合旋轉而進入上述谷部,上述一對輥之中的至少一方的輥的上述山部是以非連續設置在沿著上述輥的轉軸的方向為佳。 In the method for manufacturing a composite sheet related to the absorbent article, the low-elongation sheet is a continuous sheet continuous in the predetermined direction, and the peripheral surfaces of the low-elongation sheet are opposed to each other and the low-elongation sheet passes along the conveying direction A pair of rotating rollers form the first part and the second part, and the pair of rollers interact with each other along the rotation direction on each peripheral surface A mountain portion and a valley portion wave roller are formed, and the pair of rollers mutually engage the mountain portions to rotate into the valley portion, and the mountain portion of at least one of the pair of rollers is discontinuous It is preferably arranged in the direction along the rotation axis of the roller.
根據如以上吸收性物品相關的複合薄片的製造方法,使得連續於預定方向的低伸長性薄片通過一對輥彼此之間時,可形成第1部份及第2部份。因此,可相對於該低伸長性薄片效率良好地形成第1部份及第2部份。 According to the method for manufacturing a composite sheet related to an absorbent article as described above, when a low-elongation sheet continuous in a predetermined direction passes between a pair of rollers, the first part and the second part can be formed. Therefore, the first part and the second part can be efficiently formed with respect to the low-elongation sheet.
又,一對輥之中的至少一方的輥的山部中形成非連續的部份可確實不朝著低伸長性薄片延伸。藉此,在該部份可確實產生上述不延伸的部份。其結果,可確實抑制形成第1部份及第2部份時可能引起之低伸長性薄片的伸縮性的發現。 In addition, the discontinuous portion of the mountain portion of at least one of the pair of rollers does not extend toward the low-elongation sheet. Thereby, the above-mentioned non-extended part can be surely generated in this part. As a result, the discovery of the stretchability of the low-elongation sheet that may be caused when forming the first part and the second part can be surely suppressed.
上述吸收性物品相關的複合薄片的製造方法中,上述一對輥之中的另一方輥的上述山部是以和沿著上述輥的轉軸的方向連續地設置為佳。 In the method for manufacturing a composite sheet related to the absorbent article, it is preferable that the mountain portion of the other roller among the pair of rollers is provided continuously in the direction along the rotation axis of the roller.
根據如以上吸收性物品相關的複合薄片的製造方法,對於一對輥之中的另一方輥的山部,不需施以使該山部成為非連續的加工即可。因此,可獲得成本刪減。 According to the method for manufacturing a composite sheet related to an absorbent article as described above, the mountain portion of the other roller of the pair of rollers need not be processed to make the mountain portion discontinuous. Therefore, cost reduction can be obtained.
上述吸收性物品相關的複合薄片的製造方法中,上述固定步驟是以將上述伸縮性薄片與上述低伸長性薄片在彼此的厚度方向重疊的狀態,從厚度方向藉一對夾 壓構件夾壓上述伸縮性薄片與上述低伸長性薄片,藉此形成上述接合部,上述一對夾壓構件之中的一方的夾壓構件是在與上述低伸長性薄片相對的面上,以形成有上述複數接合部的模式具有複數突部,另一方的夾壓構件是在與上述伸縮性薄片相對的面上,具有比承接上述突部的頂面的上述頂面大的面部為佳。 In the method of manufacturing a composite sheet related to the absorbent article, the fixing step is a state in which the stretchable sheet and the low-elongation sheet are overlapped in the thickness direction of each other, and a pair of clips are borrowed from the thickness direction The pressing member presses the stretchable sheet and the low-elongation sheet to form the joint portion, and one of the pair of pressing members is on a surface opposite to the low-elongation sheet, The mode in which the plurality of joints are formed has a plurality of protrusions, and the other clamping member preferably has a face larger than the top surface that receives the top surface of the protrusions on the surface opposed to the stretchable sheet.
根據如以上吸收性物品相關的複合薄片的製造方法,突部是與伸長性薄片相對設置,藉此,突部可透過低伸長性薄片夾壓伸縮性薄片。因此,藉突部的頂面可有效抑制伸縮性薄片局部變薄而延伸的狀況。另一方面,位在突部側的低伸長性薄片的伸長性是低於伸縮性薄片。因此,因突部的頂面使得低伸長性薄片局部變薄而延伸的狀況,可依據同薄片的低伸長性而有效的避免,藉此,可在突部的頂面殘留足夠量的低伸長性薄片。並且,其結果,低伸長性薄片與伸縮性薄片可以高的接合強度接合。 According to the method of manufacturing a composite sheet related to an absorbent article as described above, the protrusion is provided opposite to the stretchable sheet, whereby the protrusion can sandwich the stretchable sheet through the low-elongation sheet. Therefore, the top surface of the protrusion can effectively suppress the situation where the stretchable sheet is locally thinned and extended. On the other hand, the stretchability of the low-elongation sheet on the protrusion side is lower than that of the stretchable sheet. Therefore, the situation in which the low-elongation sheet is locally thinned and extended due to the top surface of the protrusion can be effectively avoided according to the low extensibility of the same sheet, by which a sufficient amount of low elongation can remain on the top surface of the protrusion Sexual flakes. In addition, as a result, the low-elongation sheet and the stretchable sheet can be bonded with high bonding strength.
又,具有吸收性物品相關的伸縮性薄片,及伸長性比上述伸縮性薄片低的低伸長性薄片的複合薄片的製造裝置,其特徵為,具有:準備使得朝預定方向延伸的第1部份與較上述第1部份不延伸的第2部份在上述預定方向交互排列所形成的上述低伸長性薄片的裝置,及以在上述伸縮性薄片朝著伸縮方向伸長的狀態,使上述伸縮方向在上述預定方向一致並對上述低伸長性薄片透 過複數接合部固定上述伸縮性薄片的裝置,上述固定的裝置是將上述複數接合部朝著上述伸縮方向及與上述伸縮方向交叉的方向的兩方向呈非連續分散地設置,並設置上述接合部,使得在上述複數接合部之中位在與上述伸縮方向相鄰的接合部彼此之間的非接合部,分別至少包含有各一個上述第1部份的上述預定方向的中央位置與上述第2部份的上述預定方向的中央位置。 In addition, a manufacturing device of a composite sheet having an elastic sheet related to an absorbent article and a low-elongation sheet having a lower extensibility than the above-mentioned elastic sheet is characterized by having a first part prepared to extend in a predetermined direction The device for arranging the formed low-elongation sheet alternately with the second part that does not extend compared to the first part in the predetermined direction, and in the state where the stretchable sheet is stretched toward the stretch direction, the stretch direction Consistent in the above predetermined direction and transparent An apparatus for fixing the stretchable sheet through a plurality of joints, the fixing means is arranged to disperse the plurality of joints in a discontinuous manner in both directions of the telescopic direction and the direction crossing the telescopic direction, and the joint is provided , So that the non-joint portions between the joint portions adjacent to the telescopic direction among the plurality of joint portions respectively include at least one central position of the first portion in the predetermined direction and the second Part of the central position in the above predetermined direction.
根據如以上吸收性物品相關的複合薄片的製造裝置,與上述的製造方法中所說明的相同理由,可在複合薄片形成美觀的皺摺。 According to the apparatus for manufacturing a composite sheet related to the above absorbent article, for the same reason as described in the above-described manufacturing method, a beautiful wrinkle can be formed in the composite sheet.
本實施形態之吸收性物品相關的複合薄片的製造方法是使用於作為吸收性物品之一例的褲子型用後即棄式紙尿片1的製造生產線LM。並且,同生產線LM是製造紙尿片1的基材薄片7a作為上述的複合薄片。
The manufacturing method of the composite sheet related to the absorbent article of this embodiment is used in the production line LM of the
第1A圖為褲子型的紙尿片1的概略透視圖。第1B圖是從肌膚側顯示展開狀態之紙尿片1的概略上視圖。第2圖為分解展開狀態之紙尿片1表示的概略透視圖。
FIG. 1A is a schematic perspective view of a pants-
並且,以下的說明是紙尿片1裝設於著用人時,將位在該著用人的肌膚側的一側僅稱為「肌膚側」,另一方,位於該著用人的非肌膚側的一側僅稱為「非肌膚側」。
In the following description, when the
如第1B圖及第2圖表示,該紙尿片1是例如兩片式的紙尿片1。亦即,同紙尿片1具有作為第1零組件的吸收尿等***液的例如平面顯示大致呈長方形狀的吸收性主體3,並具有作為包覆上述吸收性主體3的非肌膚側面設置而成為紙尿片1外包裝之平面顯示大致呈沙漏形狀的外包裝薄片7的第2零組件。
As shown in FIGS. 1B and 2, the
如第2圖表示,吸收性主體3具有吸收***液的吸收性芯子3c。吸收性芯子3c是將紙漿纖維等的液體吸收性纖維或高吸收性聚合物等的液體吸收性粒狀物成形作為預定形狀之一例的平面顯示大致呈長方形狀。再者,上述吸收性芯子3c也可根據需要而以紙巾等透液性的包覆薄片包覆。
As shown in FIG. 2, the
在上述吸收性芯子3c的肌膚側面設有覆蓋該面的不織布等透液性的上層薄片4,同樣在同一吸收性芯子3c的非肌膚側面設有全面覆蓋該面的薄膜等不透液性的防漏薄片5。
A liquid-permeable
在此,該例中,任一的薄片4、5皆是形成平面顯示大致呈長方形狀,又,任一薄片4、5皆是從吸收性芯子3c的長方向的各端部向外方突出。並且,上層薄片4中突出的部份4eL與防漏薄片5中突出的部份5eL是彼此以黏著或熔敷等所接合。又,有關寬度方向是設僅防漏薄片5從吸收性芯子3c的兩側向外方突出的尺寸,該突出的各部份5eW、5ew分別在肌膚側被回折,以包覆上層薄片4的寬方向各端部的狀態藉黏著或熔敷等固定。並且,藉
以使吸收性芯子3c成被上層薄片4與防漏薄片5所包覆的狀態,其結果,成為吸收性主體3的形態。
Here, in this example, any of the
外包裝薄片7在第1B圖的展開狀態為平面顯示大致呈沙漏形狀的柔軟薄片,同一薄片7彼此正交的三方向具有厚度方向與長方向與寬方向。又,該外包裝薄片7是在長方向區分成三個部份7f、7b、7c。亦即,外包裝薄片7被區分成:配置在著用人腹側的腹側部7f;配置在著用人背側的背側部7b;及配置在著用人胯間的***部7c。並且,***部7c是當然位於腹側部7f與背側部7b之間,藉此,該***部7c在平面顯示大致呈沙漏形狀中成為捆包寬方向形狀的部份7c。
In the expanded state of FIG. 1B, the outer packaging sheet 7 is a flexible sheet having a substantially hourglass shape in plan view, and three directions in which the same sheet 7 is orthogonal to each other have a thickness direction, a longitudinal direction, and a width direction. The outer packaging sheet 7 is divided into three
如第2圖表示,在上述外包裝薄片7使用兩層構造的所謂層疊薄片7。亦即,該外包裝薄片7具有:紙尿片1著用時朝著用人的肌膚側成為內層的內層薄片8,及同樣著用時朝著用人的非肌膚側成為外層的外層薄片9,上述內層薄片8與外層薄片9是在厚度方向一邊重疊並以黏著或熔敷等接合。再者,該例是將接合後的部份所成的接合部j、j…以非連續分散而成的預定的接合圖案熔敷(參閱第3圖),對此如後述。
As shown in FIG. 2, a so-called laminated sheet 7 having a two-layer structure is used for the outer packaging sheet 7. That is, the outer packaging sheet 7 has an
上述內層薄片8的材料是使用在紙尿片1的寬方向具有伸縮性的伸縮性薄片8,另一方面,外層薄片9的材料是使用紙尿片1的寬方向為低伸長性的低伸長性薄片9。並且,伸縮性的內層薄片8在寬方向被伸長為如自然長度的2.5倍等的預定的伸長倍率為止的狀態(以
下,也稱伸長狀態),重疊在同樣張貼於寬方向的狀態的低伸長性的外層薄片9,該等兩薄片8、9是以上述的接合圖案成一體固定。
The material of the
因此,上述伸長狀態一旦被解除時,內層薄片8會根據本身的伸縮性而朝著紙尿片1的寬方向收縮,但此時,針對低伸長性的外層薄片9,會成複數皺褶狀被朝向紙尿片1的寬方向彎折,藉此,同一外層薄片9會迅速追隨著內層薄片8的收縮,使寬方向的全長縮短。並且,其結果,在外力不作用於紙尿片1的無負載狀態下,外包裝薄片7會以整體朝著寬方向短縮,並且同一外包裝薄片7的外面也會起因於外層薄片9的上述彎折而成為複數皺褶聚集的狀態。但是,對上述外包裝薄片7賦予寬方向的拉伸的外力時,可使該外包裝薄片7大致呈彈性伸長至上述皺褶的完全伸展為止,藉此,紙尿片1的外包裝薄片7成為在寬方向具有伸縮性的設計。
Therefore, once the above-mentioned stretched state is released, the
再者,上述外包裝薄片7中的外層薄片9的皺褶是左右紙尿片1的外觀。因此,本實施形態為設法賦予上述皺摺美麗的外觀。第3圖為賦予美觀皺褶而設法的說明圖,從外層薄片9側顯示皺摺完全伸展而張貼於寬方向的伸長狀態(後述的第1伸長狀態)的外包裝薄片7的概略放大圖。
In addition, the wrinkles of the outer layer sheet 9 in the outer packaging sheet 7 are the appearance of the left and
同第3圖表示,首先,根據上述的接合圖案在外層薄片9形成與內層薄片8接合用的複數接合部j、j…,但是上述的複數接合部j、j…在上述寬方向及上述長方向的兩
方向是以非連續分散地設置。第3圖的例中,複數接合部j、j…是以所謂鋸齒狀圖案配置。亦即,鋸齒狀圖案具有複數列之複數的接合部j、j…在寬方向一邊隔開間隔並在寬方向以預定的間距PjW排列所成的接合部列Rj,並且該等複數列接合部列Rj、Rj…是分別在與長方向相鄰的接合部列Rj之間,在寬方向僅偏離半間距(=PjW/2)配置。
As shown in FIG. 3, first, a plurality of bonding parts j, j for bonding to the
又,各接合部j、j…是起因於該接合而成為高剛性,因此賦予皺褶困難,相對於此,位在與寬方向相鄰的接合部j、j…彼此之間的非接合部jn(未接合的部份jn)則是起因於該非接合而成為低剛性。因此,在外層薄片9朝著寬方向收縮時,主要是對非接合部jn、jn…賦予皺褶。並且,此時只要將該皺褶賦予各非接合部jn、jn…,即可獲得外層薄片9良好的外觀。亦即,在非接合部jn未賦予皺褶較少側,其外觀變得良好。又,通常皺褶容易賦予具剛性差的部份。 In addition, since the joints j, j... are highly rigid due to the joint, it is difficult to impart wrinkles. On the other hand, the joints j, j... which are adjacent to the width direction are non-joint parts between each other jn (unjoined part jn) is due to the non-joint and becomes low rigidity. Therefore, when the outer layer sheet 9 shrinks in the width direction, wrinkles are mainly given to the non-joined portions jn, jn... In this case, as long as the wrinkles are given to the non-joint portions jn, jn, etc., a good appearance of the outer layer sheet 9 can be obtained. That is, the appearance is improved on the side where the wrinkle is not imparted to the non-joint portion jn. In addition, wrinkles are usually easily given to parts with poor rigidity.
為此,該例是以對各非接合部jn、jn…分別確實賦予皺褶的目的,對接合於內層薄片8的前一外層薄片9預先將剛性差賦予各非接合部jn。並且,剛性差的賦予是如以下得以實現。即,對外層薄片9,在寬方向交互形成朝著寬方向延伸的第1部份9a1及比該第1部份9a1較不延伸的第2部份9a2,但此時,至少分別在各一個各非接合部jn包含有該第1部份9a1的寬方向的中央位置C9a1與第2部份9a2的寬方向的中央位置C9a2。並且,藉此各非接
合部jn中,根據第1部份9a1與第2部份9a2的剛性差,使得各皺褶的賦予變得容易。並且,其結果,上述寬方向的收縮力一旦作用於外層薄片9時,在各非接合部jn分別形成有皺褶,因此,整體可成為紙尿片1之外層薄片9的良好外觀。
Therefore, in this example, for the purpose of providing wrinkles to each of the non-joined parts jn, jn..., the difference in rigidity is given to the non-joined parts jn in advance before the outer layer sheet 9 joined to the
再者,第3圖的例中,複數列的接合部列Rj、Rj是在上述的長方向以預定間距PRj排列,針對上述間距PRj例如是從1.5mm~5mm的範圍來選擇任意值,較佳是從2mm~4mm的範圍,更佳的是從2mm~3mm的範圍選擇任意值。並且,小於各範圍的下限值時,在非接合部jn確保形成皺褶用的足夠的尺寸會變得困難,另一方面,大於各範圍的上限值時,伸縮性薄片8a與低伸長性薄片9at的固定會減弱。因此,以納入於上述的範圍為佳。但是,不僅只限於上述的範圍。
Furthermore, in the example of FIG. 3, the joint row Rj and Rj of the plural rows are arranged at a predetermined pitch PRj in the above-mentioned long direction. For the pitch PRj, for example, an arbitrary value is selected from the range of 1.5 mm to 5 mm. Preferably, the range is from 2mm to 4mm, and more preferably, any value is selected from the range of 2mm to 3mm. In addition, when it is less than the lower limit value of each range, it becomes difficult to secure a sufficient size for forming wrinkles in the non-joint portion jn. On the other hand, when it is greater than the upper limit value of each range, the
又,針對形成上述第1部份9a1與第2部份9a2的形成處理或形成接合部j、j…的接合處理等是如後述。 In addition, the forming process for forming the first part 9a1 and the second part 9a2 or the bonding process for forming the bonding parts j, j... will be described later.
但是,在此所謂的「伸縮性」,即是一旦有拉伸的外力作用時,會朝著外力的作用方向大致彈性地伸長,並且在解除該外力時,大致彈性收縮的性質。又,雖然重複,但具有上述伸縮性的薄片即是上述的「伸縮性薄片8」。
However, the so-called "stretchability" refers to the property that when an external force of stretching is applied, it elastically expands in the direction in which the external force acts, and when the external force is relieved, it contracts substantially elastically. Although repeated, the sheet having the above-mentioned stretchability is the above-mentioned "
上述伸縮性薄片8是以滿足以下的條件為佳。亦即,短方向的尺寸是分別在上述短方向以25mm的全長均等把
持25mm的帶狀薄片的長方向兩端部的狀態,以1.0(N)的外力分別以上述兩端部為力點朝著長方向拉伸時的伸長率(%)成為50%~300%的範圍的任意值,並在解除上述外力收縮後不收縮而殘餘伸長變形率(%)成為0%~40%的範圍的任意值即可。又,更理想的是上述伸長率成為70%~200%的範圍的任意值,並且殘餘伸長變形率成為0%~30%的範圍的任意值即可。附帶一提,上述的伸長率(%)即是將以1.0(N)的外力拉伸時的帶狀薄片的長度L1減去拉伸前的無負載時之帶狀薄片長度的自然長度L0所成的減法值△L1(=L1-L0)以上述自然長度L0除後所成的除法值(=△L1/L0)的百分比表示值。又,上述的殘餘伸長變形率(%)是以從上述的外力拉伸時的長度L1減去上述自然長度L0所成的減法值△L1(=L1-L0)除以從上述1.0(N)的外力解除後的長度L2減去上述拉伸前的自然長度L0所成的減法值△L2(=L2-L0)的除法值(=△L2/△L1)的百分比表示值。
The above-mentioned
又,「低伸長性薄片9」是指伸長性較上述伸縮性薄片8低的薄片。亦即,預定大小拉伸的外力作用時的伸長率(%)是比上述伸縮性薄片8的伸長率(%)低的薄片。並且,上述低伸長性薄片9是以滿足以下的條件為佳。亦即,短方向的尺寸是分別在上述短方向以25mm的全長均等把持25mm的帶狀薄片的長方向兩端部的狀態,以1.0(N)的外力分別以上述兩端部為力點朝著長方向拉伸時的伸長率(%)成為0%~20%的範圍的任意值
即可。又,更理想的是上述伸長率成為0%~10%的範圍的任意值。
The "low-elongation sheet 9" refers to a sheet having lower extensibility than the above-mentioned
再者,上述伸縮性薄片8及低伸長性薄片9
的形態也可以是不織布,也可以是織布或薄膜。
Furthermore, the above-mentioned
針對可利用於伸縮性薄片8的不織布的具體例,可以例示如可對具有顯示大致彈性的熱塑性彈性體製纖維與顯示大致非彈性的熱塑性樹脂製纖維的不織布施以齒輪延伸處理等的適當延伸處理的不織布。亦即,藉上述延伸處理的進行,使不織布所包含的大致非彈性的熱塑性彈性體製纖維塑性變形,或將同一纖維彼此的接合點破壞等,可對阻礙熱塑性彈性體製纖維的大致彈性的伸縮變形困難的構造使得該不織布變化,藉此,發現該不織布的伸縮性而成為可作為伸縮性薄片8使用的狀態。
Specific examples of the nonwoven fabric that can be used for the
再者,作為大致彈性的熱塑性彈性體可例示如聚氨酯系彈性體、聚苯乙烯系彈性體、聚烯烴系彈性體、聚醯胺系彈性體等。又,大致非彈性的熱塑性樹脂製纖維可例示如含聚烯烴系樹脂的纖維等,另外作為聚烯烴系樹脂可例示如聚乙烯(PE)、聚丙烯(PP)、乙烯-α烯烴共聚物等。附帶一提,該例中,作為伸縮性薄片8是使用對具有聚氨酯系彈性體製纖維與PP纖維的混纖類型的不織布施以齒輪延伸的薄片。
In addition, examples of the substantially elastic thermoplastic elastomer include polyurethane-based elastomers, polystyrene-based elastomers, polyolefin-based elastomers, and polyamide-based elastomers. In addition, the substantially inelastic thermoplastic resin fiber can be exemplified by fibers containing polyolefin-based resins, and the polyolefin-based resin can be exemplified by polyethylene (PE), polypropylene (PP), ethylene-α-olefin copolymer, etc. . Incidentally, in this example, as the
又,針對可利用於低伸長性薄片9的不織布的具體例是可例示如PE、PP、聚酯、聚醯胺等的纖維所成的紡黏型不織布、熔噴型不織布、層疊紡黏型不織布、 熔噴型不織布與紡黏型不織布而成的所謂SMS不織布、通氣型不織布等。再者,對於纖維的構造可不限於如上述任意的單一熱塑性樹脂所成的單獨纖維。例如,芯材為PP而鞘材為PE的芯鞘構造的複合纖維,也可以是該等以外構造的纖維。附帶一提,該例中,低伸長性薄片9是使用PP纖維的紡黏型不織布。 In addition, specific examples of the nonwoven fabric that can be used for the low-elongation sheet 9 are spunbond nonwoven fabric, meltblown nonwoven fabric, and laminated spunbond type that can be exemplified by fibers such as PE, PP, polyester, and polyamide. Non-woven, The so-called SMS non-woven fabric and vented non-woven fabric made of melt-blown non-woven fabric and spun-bonded non-woven fabric. Furthermore, the structure of the fibers may not be limited to the individual fibers made of any single thermoplastic resin as described above. For example, a composite fiber of a core-sheath structure in which the core material is PP and the sheath material is PE may be fibers of other structures. Incidentally, in this example, the low-elongation sheet 9 is a spunbonded non-woven fabric using PP fibers.
如第1B圖及第2圖表示,在以上雙重構造的外包裝薄片7的肌膚側面,即內層薄片8的肌膚側面的寬方向的中央位置,上述吸收性主體3是以使彼此的長方向一致的狀態安裝。上述的安裝是至少將吸收性主體3的長方向的各端部3e、3e與外包裝薄片7進行接合,該例是如第2圖表示,在各端部3e、3e分別將接合吸收性主體3與外包裝薄片7的接合部j3、j3形成為大致T字型。亦即,各接合部j3、j3分別具有在紙尿片1的寬方向較長的橫長帶狀部份j3W及以該橫長帶狀部份j3W的上述寬方向的中央部為起點而向***部7c一側延伸的縱長帶狀部份j3L。並且,藉此,可有效避免吸收性主體3與外包裝薄片7彼此受到所需以上的彼此限制。但是,上述接合部j3的形狀不受該等任何的限制。例如,也可以在T字型的一對接合部j3、j3彼此之間的位置進一步追設點狀的接合部j3C,或者也可在各端部3e、3e分別形成跨吸收性主體3的各端部3e、3e的大致全區域之寬廣的大致矩形形狀的接合部(未圖示),也可形成現在所述形狀以外形狀的接合部。另外,該例中,上述接合部j3的形成雖是以熱熔
融接著劑的接著來實現,但不限於此,例如也可以進行熔敷。
As shown in FIG. 1B and FIG. 2, at the center position in the width direction of the skin side of the outer packaging sheet 7 of the above dual structure, that is, the skin side of the
並且,該例中,上述吸收性主體3與外包裝薄片7的安裝是在使外包裝薄片7之寬方向的伸長狀態比固定上述外層薄片9及內層薄片8時之內層薄片8的伸長狀態(相當於後述的「第1伸長狀態」)緩和的伸長狀態(相當於後述的「第2伸長狀態」)進行。並且,藉此,最終可減輕成為褲子型的紙尿片1時在吸收性主體3產生的皺褶。其結果,可有效抑制吸收性主體3的吸收性的降低及漏尿。附帶一提,對於以此緩和後的伸長狀態將吸收性主體3安裝於外包裝薄片7則是在此後的製造生產線LM的說明中敘述。
Moreover, in this example, the attachment of the
並且,安裝有如第1B圖的吸收性主體3的外包裝薄片7是在***部7c彎折為二使得腹側部7f與背側部7b重疊。並且,在該重疊的狀態下,以寬方向的各端部7eW分別接合腹側部7f與背側部7b,藉此成為形成有如第1A圖表示的胴周圍開口部HB與一對腳周圍開口部HL、HL的褲子型的紙尿片1的形態。
In addition, the outer packaging sheet 7 to which the
第4A圖為製造上述紙尿片1的製造生產線LM的概略側視圖。又,第4B圖與第4A圖對應,以概略上視圖表示製造紙尿片1的狀況。
FIG. 4A is a schematic side view of a manufacturing line LM for manufacturing the above-mentioned
該製造生產線LM在最初生成紙尿片1的基
材薄片7a(相當於複合薄片)。並且,將上述基材薄片7a藉著適當的搬運機構CV、CV…等,沿著預定的搬運方向連續地搬運,但在上述搬運中,對該等基材薄片7a施以衝壓或零組件的安裝等的種種加工,且每次基材薄片7a會依序改變狀態,最終製造出第1A圖的狀態的紙尿片1。附帶一提,如第4B圖表示,該例中,基本上基材薄片7a是以所謂橫向流動的樣態搬運。亦即,一邊使得相當於紙尿片1寬方向的方向與搬運方向一致,並以將成為紙尿片1的部份成一列排列於搬運方向的狀態,搬運基材薄片7a。
The manufacturing line LM initially produced the base of the
供上述搬運的搬運機構CV是例如使用搬運輥或在成為載放面的皮帶面具有吸附保持功能的吸附帶式輸送機、以上下成對配置的環狀帶彼此之間為基材薄片7a的搬運路徑的皮帶式輸送機等。
The conveying mechanism CV for conveying is, for example, a conveying roller or a suction belt conveyor having a suction holding function on a belt surface serving as a placement surface, and the endless belts arranged in pairs above and below are the
製造生產線LM上,在搬運方向排列配置有可進行上述種種加工處理的複數處理部10、20…。該例中,作為複數處理部10、20…,具有外包裝薄片生成處理部10、腳周圍開口部形成處理部20、外包裝薄片收縮處理部30、吸收性主體安裝處理部40、二折處理部50、端密封處理部60、分割處理部70。
On the manufacturing line LM, a plurality of
以下,雖針對各處理部10~70進行說明,但以下的說明中,設定在製造生產線LM上的上述搬運方向稱為「MD方向」。又,稱與MD方向正交的方向的兩方向之中的一方為「CD方向」,另一方為「Z方向」。並
且,CD方向是與基材薄片7a的寬方向平行,第4A圖中,朝向貫穿紙面的方向。又,Z方向是與基材薄片7a的厚度方向平行。並且,如後述即可得知,但MD方向是相當於「伸縮方向」和「預定方向」的兩者,CD方向則是相當於「與伸縮方向交叉的方向」和「與預定方向交叉的方向」的兩者。
Hereinafter, although each processing part 10-70 is demonstrated, in the following description, the said conveyance direction set on the manufacturing line LM is called "MD direction." In addition, one of the two directions orthogonal to the MD direction is referred to as the "CD direction" and the other is referred to as the "Z direction". and
In addition, the CD direction is parallel to the width direction of the
第5圖是成為最初處理部的外包裝薄片生成處理部10的概略側視圖。
FIG. 5 is a schematic side view of the packaging sheet
該處理部10是使用加工裝置11與接合裝置15,生成與MD方向連續而成的外包裝薄片7的連續薄片7a(以下,僅稱為外包裝薄片7a)作為紙尿片1的基材薄片7a。
This
亦即,前者的加工裝置11是一邊沿著MD方向搬運成為外層薄片9的低伸長性薄片9的連續薄片9a(以下,僅稱為「低伸長性薄片9a」),並相對於同一薄片9a在與MD方向交互地形成上述第1部份9a1與第2部份9a2(相當於「準備步驟」。
That is, the
另一方面,後者的接合裝置15是將使得伸縮方向沿著MD方向搬運成為內層薄片8的伸縮性薄片8的連續薄片8a(以下,僅稱為「伸縮性薄片8a」),從大致自然長度的狀態朝MD方向伸長至預定的伸長倍率為止,並以此伸長狀態將上述低伸長性薄片9a從厚度方向重疊接合
於同一薄片8a(相當於「固定步驟」)。並且,藉此,生成外包裝薄片7a。以下,針對各裝置11、15詳細說明。
On the other hand, the latter joining
第6圖為部份放大表示之加工裝置11的概略側視圖。又,第7圖為第6圖中的VII-VII箭頭方向圖。
FIG. 6 is a schematic side view of the
如第6圖表示,加工裝置11具有:沿著MD方向搬運低伸長性薄片9a的搬運機構12,及波形輥機構13。
As shown in FIG. 6, the
搬運機構12是例如具有沿著CD方向圍繞轉軸旋轉的複數搬運輥12R、12R…,各搬運輥12R分別是沿著低伸長性薄片9a的搬運路徑配置。又,各搬運輥12R的周速值V12R(m/分鐘)是與自上游步驟搬運而來的低伸長性薄片9a的搬運速度值(m/分鐘)大概同值。並且,藉此,該搬運機構12可以大致不使低伸長性薄片9a伸長且不致鬆弛程度的貼合狀態進行搬運。
The
另一方面,如同第6圖表示,波形輥機構13具有一邊使彼此的外圍面相對並沿著CD方向的圍繞轉軸旋轉的上下一對的波形輥13u、13d。並且,在各波形輥13u、13d的外圍面,分別沿著旋轉方向交互形成山部13m與谷部13v,並且各山部13m及各谷部13v是分別沿著CD方向形成。又,如第6圖中的放大圖表示,在各波形輥13u、13d旋轉時,將彼此的山部13m與谷部13v以若干的間隙咬合使得一方的波形輥13u(13d)的山部
13m進入另一方波形輥13d(13u)的谷部13v。並且,該旋轉中,低伸長性薄片9a沿著MD方向通過波形輥13u、13d彼此之間。
On the other hand, as shown in FIG. 6, the
因此,該通過中的低伸長性薄片9a是藉著一方波形輥13d(13u)中彼此相鄰的山部13m、13m彼此與進入該山部13m、13m彼此之間的谷部13v的另一方波形輥13u(13d)的山部13m,變形成三點彎曲狀(第6圖)。並且,此時,在低伸長性薄片9a中與一方波形輥13d(13u)的山部13m的頂面抵接的部份9a2是與該頂面大致不能相對移動地抵接,藉此,大致不延伸地成為上述第2部份9a2,又,同樣在同薄片9a中與另一方波形輥13u(13d)的山部13m的頂面抵接的部份9a2也是與該頂面大致不能相對移動地抵接,因此,大致不延伸地成為上述第2部份9a2。但是,該等兩個第2部份9a2、9a2彼此之間的部份9a1是依據上述山部13m的進入量而延伸,藉此,該部份9a1是成為上述的第1部份9a1。並且,其結果,低伸長性薄片9a在MD方向交互形成有第1部份9a1與第2部份9a2,然後,同薄片9a藉著搬運輥12R,以貼合的狀態送至接合裝置15。
Therefore, the low-
再者,當然,谷部13v的旋轉方向的形成間距Pv(在相當於山部13m頂面的位置的間距Pv)是與山部13m的旋轉方向的形成間距Pm(山部13m的頂面的間距Pm)同值,又,山部13m的形成間距Pm在上下波形輥13d、13d彼此為彼此同值。此外,該例中,該等一對
波形輥13u、13d彼此一邊旋轉,使得另一方的輥13u(13d)的山部13m的旋轉方向的中央位置定位於一方的輥13d(13u)中的旋轉方向相鄰的山部13m與山部13m之間的中間位置。藉此,如第3圖表示,上述第2部份9a2是在MD方向以預定的間距P9a2所形成。
Furthermore, of course, the formation pitch Pv (the pitch Pv at a position corresponding to the top surface of the
相關山部13m之旋轉方向的形成間距Pm是例如從0.5mm~3.0mm的範圍選擇任意值,以0.7mm~2.0mm的範圍的任意值較佳,並以1.0mm~1.5mm的範圍的任意值更佳。並且,只要進入相關範圍,即可在外層薄片9a形成表面看來舒適的大小的皺褶。
The formation pitch Pm of the rotation direction of the
但是,該例中,如第7圖表示,以CD方向(相當於「與預定方向交叉的方向」及「沿著轉軸的方向」)的預定位置Pk、Pk…將一對波形輥13u、13d之中的一方的波形輥13u的山部13m形成缺口。並藉此,山部13m為非連續設置,該理由是如下述。
However, in this example, as shown in FIG. 7, a pair of
首先,該例中,由於是使用PP纖維的不織布作為低伸長性薄片9a,因此無須將山部13m部份地形成缺口,亦即,即使使用完全無缺口之山部13m的一對波形輥13u、13d,大致不會發現低伸長性薄片9a的伸縮性。因此,即使在第1部份9a1及第2部份9a2的形成後,低伸長性薄片9a仍可依然維持著伸長性低的狀態,即具有伸長性低的薄片的功能。
First, in this example, since the PP fiber non-woven fabric is used as the low-
但是,根據場合,作為低伸長性薄片9a,也可加入於PP纖維使用含適當彈性體製纖維的薄片。並且,此
時,一旦使用無缺口之跨CD方向全長的完全連續的山部13m的波形輥13u、13d時,同薄片9a發現有伸縮性,其結果,即不能維持伸長性低的狀態。
However, depending on the occasion, as the low-
亦即,藉上述三點彎曲狀的延伸處理,使同薄片9a中的大致非彈性的PP纖維塑性變形時,完全伸展的PP纖維成為阻礙彈性體製纖維之大致彈性的伸縮變形的狀態。如此一來,以後,同薄片9a會大致僅根據彈性體製纖維成為可自由伸縮變形的狀態,即成為發現伸縮性的狀態。
That is, when the substantially inelastic PP fibers in the
因此,該例是以對不論任何組成之低伸長性薄片9a皆可抑制波形輥機構13的通過後所引起之上述伸縮性的發現為目的,如第7圖表示,使一對波形輥13u、13d中的一方波形輥13u的山部13m在CD方向的預定位置Pk、Pk…缺口,藉此非連續設置該山部13m。亦即,如上述,在該預定位置Pk不存在有山部13m,在同位置Pk不進行上述的三點彎曲狀的延伸處理,結果,至少在該位置Pk不會發現有伸縮性,可抑制低伸長性薄片9a整體之伸縮性的發現。
Therefore, the purpose of this example is to find the above-mentioned stretchability caused by the passage of the
附帶一提,針對另一方的波形輥13d,也可以如第7圖表示跨CD方向連續設置山部13m,也可非連續設置。但是,連續設置山部13m,無需施以使得山部13m非連續的加工,因此可獲得成本的刪減。
Incidentally, as for the other
又,較理想的是在上下一對波形輥13u、13d中的至少一方或雙方的波形輥13u、13d,內置加熱器,藉此,可調整波形輥13u、13d的山部13m的溫度。並
且,如上述,介由山部13m的加熱使低伸長性薄片9a軟化,因此可有效防止延伸時所引起的第2部份9a2的斷裂。再者,加熱溫度的調整參考值為可例示山部13m的溫度為25℃~40℃的範圍的任意值。
In addition, it is preferable that at least one or both of the pair of upper and lower
另外,根據場合,以和上述相同的目的,如第5圖表示,也可較波形輥機構13更在MD方向上游側的位置配置預熱輥14a、14b。預熱輥14a、14b也是沿著CD方向的轉軸周圍旋轉的輥,但是在同一輥14a、14b的內部設有加熱器,可藉同加熱器將輥14a、14b的外圍面加熱。並且,低伸長性薄片9a藉著以捲繞在預熱輥14a、14b的外圍面的狀態使得同一輥14a、14b旋轉,朝著MD方向搬運,但在此捲繞的期間,低伸長性薄片9a被加熱。加熱溫度調整的參考值為可例示同一輥14a、14b的外圍面溫度為25℃~40℃的範圍的任意值。再者,該第5圖的例中,雖配置有兩個預熱輥14a、14b,並對該等兩個預熱輥14a、14b的外圍面掛設S字型的低伸長性薄片9a,但不為該等所限制。
In addition, depending on the occasion, for the same purpose as described above, as shown in FIG. 5, the preheating
如同第5圖表示,接合裝置15具有:夾輥機構16,及較同機構16配置在MD方向的下游的超音波熔敷裝置17。並且,該接合裝置15是將上游步驟以大致自然長度的狀態所搬運的伸縮性薄片8a,在夾輥機構16與超音波熔敷機構17之間朝著MD方向伸長至上述的伸長倍率為
止,並且,一邊維持著該伸長狀態,並藉著超音波熔敷裝置17將同薄片8a熔敷於上述波形輥機構13所傳送的低伸長性薄片9a後接合。
As shown in FIG. 5, the
夾輥機構16具有在沿著CD方向的轉軸周圍旋轉的一對夾輥16R、16R。並且,以一對夾輥16R、16R彼此的外圍面一邊夾入從上游步驟連續所搬運的伸縮性薄片8a,並藉著作為驅動源的伺服馬達(未圖示)賦予驅動力而驅動旋轉,使同薄片8a以和夾輥16R、16R的周速值V16R大致同值的搬運速度值朝著超音波熔敷裝置17送出。
The
另一方面,超音波熔敷裝置17具有:例如以20kHz~35kHz的預定頻率且1微米~30微米的預定振幅朝著法線方向振動的振動面17hs的發聲器17h,及以外圍面承受發聲器17h的上述振動面17hs的振動的鑽輥17a。鑽輥17a是在沿著CD方向的轉軸周圍可旋轉地被支撐著,並且,從作為驅動源的伺服馬達(未圖示)賦予驅動力而驅動旋轉。又,在鑽輥17a的外圍面上,以相對於同外圍面大致不相對滑動的例如45°以上的捲繞角度捲繞從波形輥機構13所傳送的低伸長性薄片9a,及從夾輥機構16所傳送的伸縮性薄片8a的兩者。
On the other hand, the
因此,藉鑽輥17a的驅動旋轉,以和鑽輥17a的周速值V17a相同的搬運速度值V8a9a,沿著同一輥17a的外圍面搬運伸縮性薄片8a與低伸長性薄片9a的兩者。
Therefore, both the
再者,上述搬運速度值V8a9a是如上述為夾輥機構
16的夾輥16R的周速值V16R之伸長倍率倍的大小。因此,對於伸縮性薄片8a,可伸長至上述伸長倍率而可捲繞於鑽輥17a的外圍面。另一方面,同搬運速度值V8a9a是與低伸長性薄片9a的搬運輥12R的周速值V12R大致同值。因此,對於低伸長性薄片9a則大致不會伸長,並以不鬆弛程度張貼的狀態捲繞在鑽輥17a的外圍面上。
In addition, the conveying speed value V8a9a is the pinch roller mechanism as described above
The
並藉此,伸長至伸長倍率為止的伸縮性薄片8a與張貼狀態的低伸長性薄片9a是在鑽輥17a的外圍面上彼此重疊於厚度方向,並在該重疊後的狀態,藉鑽輥17a的旋轉,在該等薄片8a、9a通過發聲器17h的配置位置時,對同薄片8a、9a從發聲器17h的振動面17hs投入超音波振動能而發熱熔融,藉此,以如上述的複數接合部j、j…呈非連續分散的接合圖案接合兩薄片8a、9a,生成外包裝薄片7a。並且,鑽輥17a將上述外包裝薄片7a朝著MD方向的下游送出,藉以使所送出的外包裝薄片7a,以和該周速值V17a大致同值的搬運速度值V8a9a朝著MD方向下游的腳周圍開口部形成處理部20搬運。
And by this, the
再者,該例中,發聲器17h的振動面17hs是以振動方向為法線方向的平面。另一方面,在鑽輥17a的外圍面,以上述接合圖案形成接合部j、j…的應以對應上述接合圖案的配置圖案配置有複數突部17at、17at…(參閱在旋轉方向將第8圖的鑽輥17a的外圍面展開表示的放大圖)。並且,在低伸長性薄片9a中,將發聲器17h的振動面17hs選擇性抵接在與上述突部17at的頂面抵接的
部份,藉此投入超音波振動能而熔融,藉此,在與各突部17at的頂面對應的位置分別形成接合部j、j…。又,該例中,接合圖案是如已說明從鋸齒圖案(第3圖),如第8圖表示,也在鑽輥17a的外圍面以鋸齒圖案設有上述複數的突部17at、17at…。另外,由於進行橫向流動,紙尿片1的寬方向是沿著MD方向及鑽輥17a的旋轉方向。
In this example, the vibration surface 17hs of the
為此,在上述低伸長性薄片9a的非接合部jn,至少包含有各一個同薄片9a之第1部份9a1的寬方向的中央位置C9a1與第2部份9a2的寬方向的中央位置C9a2的關係(第3圖)是與MD方向相關而成立的方式,配置有各突部17at、17at…。例如,該例中,使上述關係成立地配置有各突部17at、17at…,以使得第3圖的非接合部jn的MD方向的長度Ljn比同薄片9a的第2部份9a2的形成間距P9a2大。亦即,第8圖的例是將位在突部17at、17at彼此之間的突部17at的非存在部份17an的MD方向的長度L17an形成比上述的第2部份9a2的形成間距P9a2大(第3圖)。
Therefore, the non-joint portion jn of the low-
藉此,在上述接合後,解除伸縮性薄片8a的伸長狀態時,依據上述第1部份9a1與第2部份9a2的剛性差,低伸長性薄片9a的各非接合部jn會迅速地壓曲,其結果,確實賦予各該非接合部jn皺褶,使整體的外層薄片9a的外觀變得良好。
Thereby, when the stretched state of the
附帶一提,該例是如第3圖表示,雖是將非接合部jn的長度Ljn形成為第2部份9a2之間距P9a2的 兩倍大小以下,但不為該等有所限制。 Incidentally, this example is shown in FIG. 3, although the length Ljn of the non-joining portion jn is formed as the distance P9a2 between the second portion 9a2 Less than twice the size, but there are no restrictions for such.
例如,只要使非接合部jn的MD方向的長度Ljn大於第2部份9a2之MD方向的形成間距P9a2的複數倍即可。並且,根據上述,第1部份9a1的MD方向的中央位置C9a1與第2部份9a2的MD方向的中央位置C9a2形成分別有複數個包含於非接合部jn。並且,藉此非接合部jn之中在MD方向的複數位置有剛性差產生,低伸長性薄片9a的非接合部jn在複數位置迅速地被壓曲,其結果,可對於該非接合部jn賦予較多的皺褶。
For example, the length Ljn of the non-joining portion jn in the MD direction may be greater than a multiple of the formation pitch P9a2 of the second portion 9a2 in the MD direction. Further, according to the above, the central position C9a1 of the first portion 9a1 in the MD direction and the central position C9a2 of the second portion 9a2 in the MD direction are each formed plurally and included in the non-joint portion jn. In addition, due to this, there is a difference in rigidity at plural positions in the MD direction among the non-joined portions jn, and the non-joined portions jn of the low-
再者,該例是如第8圖表示,雖例示正方形作為鑽輥17a的突部17at的頂面的平面形狀,但不為此所限制,例如可以是正五角形以上的正多角形,也可以是正圓形,也可以是該等以外的形狀。
In addition, this example is shown in FIG. 8, although a square is exemplified as the planar shape of the top surface of the protrusion 17at of the
又,如第5圖表示,該例雖是與鑽輥17a(相當於「一方的夾壓構件」)的外圍面相對地配置低伸長性薄片9a,與發聲器17h(相當於「另一方的夾壓構件」)的振動面17hs(相當於「面部」)相對地配置伸縮性薄片8a,但不為此所限制,也可以相反配置。亦即,也可以和鑽輥17a的外圍面相對地配置伸縮性薄片8a,與發聲器17h的振動面17hs相對地配置低伸長性薄片9a。但是,從接合部j的接合強度提升的觀點是以前者為佳。亦即,根據前者的本實施形態的構成,首先,在伸縮性薄片8a使發聲器17h的振動面17hs相對,並且,上述振動面17hs的面積是比鑽輥17a的外圍面的突部17at的頂面面
積大。又,鑽輥17a的外圍面的突部17at是與低伸長性薄片9a相對而設置,藉此,突部17at是透過低伸長性薄片9a夾壓伸縮性薄片8a。因此,藉突部17at的頂面可有效抑制使伸縮性薄片8a局部地變薄伸展而穿透等的狀況。並且,藉此,在突部17at的頂面殘留足夠量的伸縮性薄片8a。另一方面,位於突部17at側的低伸長性薄片9a的伸長性是比伸縮性薄片8a低。因此,藉著突部17at的頂面可有效避免使得低伸長性薄片9a局部地變薄而伸展的狀況。藉此,在突部17at的頂面可殘留足夠量的低伸長性薄片9a。並且,其結果,可以高的接合強度接合低伸長性薄片9a與伸縮性薄片8a。
Also, as shown in FIG. 5, in this example, although the low-
另外,該例是如第5圖表示,即使在伸縮性薄片8a從發聲器17h的振動面17hs離開之後,該伸縮性薄片8a與低伸長性薄片9a接合所成的外包裝薄片7a,在短暫的期間維持著捲繞於鑽輥17a的狀態。並藉此,有效抑制外包裝薄片7a之CD方向的收縮變形。附帶一提,同第5圖的例是將上述捲繞的實現,藉著在MD方向下游側的位置與鑽輥17a的外圍面相對配置搬運輥18R來進行。亦即,將外包裝薄片7a相對於鑽輥17a與搬運輥18R呈S字型掛設,藉此即使在比振動面17hs位於MD方向下游側的位置仍可維持著外包裝薄片7a捲繞於鑽輥17a的狀態。但是,不為此所限制。
In addition, in this example, as shown in FIG. 5, even after the
但是,上述中,雖已說明「位在低伸長性薄片9a貼合的狀態」,但是上述貼合的狀態中,低伸長薄
片9a是形成根據其低伸長性伸長至較此以上的狀態困難的所謂伸展停止狀態。因此,假如即使在以後的搬運中有假設外的大張力作用的場合,可以該低伸長性薄片9a抵抗上述張力以使得外包裝薄片7a的MD方向的長度不會變化。因此,在此後可以高位置精度進行相對於外包裝薄片7a所進行的腳周圍開口部7HL的形成處理,附帶一提,假設定義上述「伸展停止狀態」時,例如可稱為「薄片在不破損的狀態,並一邊保持著薄片的狀態,不致從該等時間點的狀態進一步以伸長率5%以上伸長的狀態」。
However, in the above, although the "position in which the low-
又,所謂上述的「伸長倍率」是表示伸長狀態的伸縮性薄片8a的全長伸長至伸長前的自然長度的數倍,並且,上述,伸長倍率是規定完成狀態的紙尿片1的外包裝薄片7(7a)從無負載狀態朝著寬方向是如何伸長。亦即,伸縮性薄片8a是被設定成預定伸長倍率而製造的紙尿片1是可使外包裝薄片7(7a)朝著紙尿片1的寬方向伸長至相當於該伸長倍率的伸長狀態為止。上述伸長倍率是例如設定成1.5倍~4倍的範圍的任意值,該例中,伸長倍率是設定為2.5倍。再者,以下稱伸縮性薄片8a伸長至該外包裝薄片生成處理部10所設定的伸長倍率為止的狀態為「第1伸長狀態」。
In addition, the above-mentioned "stretch ratio" means that the entire length of the
接著的腳周圍開口部形成處理部20也是外包裝薄片7a的伸長狀態維持著上述的第1伸長狀態。並且,如第
4A圖及第4B圖表示,該腳周圍開口部形成處理部20是對此第1伸長狀態所搬運的外包裝薄片7a,以預定的第1間距P1衝壓形成腳周圍開口部7HL。
The subsequent foot-peripheral opening
在此,上述第1間距P1是相當於第1伸長狀態之MD方向的紙尿片1的一份的長度。因此,外包裝薄片7a在成為紙尿片1的各部份各形成有一個腳周圍開口部7HL。附帶一提,該紙尿片1的一份的長度是根據外包裝薄片7a的伸長狀態而變化。例如,伸長狀態緩和而外包裝薄片7a收縮時,僅其收縮量縮短MD方向之紙尿片1的一個量的長度。
Here, the first pitch P1 is a length corresponding to one portion of the
上述腳周圍開口部7HL的形成處理是藉衝切裝置21進行。衝切裝置21具有一邊使外圍面相對並沿著CD方向的轉軸周圍旋轉的上述一對的輥21u、21d。並且,上輥21u是在外圍面具有刀刃21c的衝切輥21u,另一方,下輥21d是以平滑的外圍面承接刀刃21c的鑽輥21d。又,刀刃21c是對應腳周圍開口部7HL的形狀的環狀的所謂衝切刃,從衝切輥21u的外圍面突出。因此,外包裝薄片7a通過該等上下輥21u、21d彼此之間的輥間隙時,在外包裝薄片7a中從同薄片7a衝切出對應環狀的刀刃21c內周圍側的部份,藉此,在外包裝薄片7a形成腳周圍開口部7HL。
The process of forming the opening 7HL around the foot is performed by the punching
附帶一提,該例中,上下輥21u、21d的驅動旋轉的驅動源為伺服馬達(未圖示)。又,刀刃21c是在上輥21u的外圍面僅設有一個。因此,外包裝薄片7a在
MD方向僅上述的第1間距P1的長度每通過衝切裝置21時,上輥21u及下輥21d分別進行一旋轉,藉此,在外包裝薄片7a以第1間距P1形成腳周圍開口部7HL。並藉此,以相當於第1伸長狀態的紙尿片1的一個量的長度的間距,在外包裝薄片7a形成腳周圍開口部7HL,然後,將同薄片7a以第1伸長狀態朝MD方向下游的外包裝薄片收縮處理部30送出。
Incidentally, in this example, the driving source for driving the upper and
接著的外包裝薄片收縮處理部30是如第4A圖及第4B圖表示,將第1伸長狀態所搬運的外包裝薄片7a朝著MD方向收縮,藉此,將外包裝薄片7a設成比第1伸長狀態的伸長倍率小的伸長倍率的伸長狀態(以下,稱第2伸長狀態)。例如,該例是減小外包裝薄片7a的延伸量,以使得在第1伸長狀態中的2.5倍的伸長倍率成為僅減小10%的2.25倍。並藉此,抑制在此之後安裝於外包裝薄片7a之吸收性主體3所產生的皺摺。再者,以下,稱第1伸長狀態的伸長倍率為「第1伸長倍率M1」,稱第2伸長狀態的伸長倍率為「第2伸長倍率M2」。
Next, as shown in FIGS. 4A and 4B, the outer packaging sheet shrinking
上述外包裝薄片7a的收縮處理是藉著排列設置於MD方向的兩個夾輥機構31、33來進行。亦即,在MD方向的預定位置配置有上游側的夾輥機構31,並在較該上游側夾輥機構31的下游側的位置配置有下游側的夾輥機構33。並且,任意的夾輥機構31、33皆大致為相同
機構。
The shrinking process of the
亦即,上游側的夾輥機構31具有在沿著CD方向的轉軸周圍旋轉的上下一對夾輥31u、31d,又,下游側的夾輥機構33也具有在沿著CD方向的轉軸周圍旋轉的上下一對夾輥33u、33d。並且,上游側夾輥機構31的一對夾輥31u、31d,分別是以彼此的外圍面一邊夾入外包裝薄片7a,並使得該夾輥31u、31d從作為驅動源的伺服馬達(未圖示)賦予驅動力而旋轉驅動,藉此將外包裝薄片7a朝著MD方向的下游送出。又,同樣地,下游側夾輥機構33的一對夾輥33u、33d,分別是以彼此的外圍面一邊夾入外包裝薄片7a,並使得該夾輥33u、33d從作為驅動源的伺服馬達(未圖示)賦予驅動力而旋轉驅動,藉此將外包裝薄片7a朝著MD方向的更下游送出。
That is, the upstream
在此,上游側夾輥機構31的夾輥31u、31d的周速值V31(m/分鐘)是與上述超音波熔敷裝置17的鑽輥17a的周速值V17a(m/分鐘)大致同值,因此,該夾輥31u、31d的周速值V31於其最近上游側中在第1伸長狀態所搬運成為外包裝薄片7a之搬運速度值(m/分鐘)的第1搬運速度值大致同值。相對於此,下游側夾輥機構33的夾輥33u、33d的周速值V33(m/分鐘)是設成比上游側夾輥機構31的夾輥31u、31d的周速值V31僅小10%的值。因此,外包裝薄片7a在通過上游側夾輥機構31與下游側夾輥機構33之間的搬運路徑R30的期間,同薄片7a的伸長狀態是朝著比第1伸長狀態的伸長倍率僅
小10%的伸長倍率的第2伸長狀態收縮。並且,該第2伸長狀態的外包裝薄片7a被送出至MD方向之下游側的吸收性主體安裝處理部40。
Here, the peripheral speed value V31 (m/min) of the
附帶一提,在外包裝薄片7a通過上游側夾輥機構31的夾輥31u、31d的位置時,如上述,使得伸縮性薄片8a之中通過上述位置的部份依序朝MD方向收縮。因此,低伸長性薄片9a的第1部份9a1及第2部份9a2通過上述位置時,在同薄片9a上依序形成皺褶,其結果,可在外包裝薄片7a形成美觀整齊的皺褶。
Incidentally, when the
但是,該例中,該收縮處理以後的外包裝薄片7a的搬運雖基本上大致是在第2伸長狀態下進行,但上述的搬運,可以使得外包裝薄片7a的搬運速度值大致維持在比上述第1搬運速度值僅對應上述收縮之比例小的搬運速度值(以下,稱第2搬運速度值)來實現。附帶一提,換言之,上述第2搬運速度值也可稱為「將第2伸長倍率以第1伸長倍率除後所成的除法值乘以第1搬運速度值的值」。
However, in this example, the conveyance of the
又,在此,定義作為表示外包裝薄片7a的上述收縮程度之值得收縮率(%)時,成為如下。即,將第1伸長倍率M1減去第2伸長倍率M2所成減法值(=M1-M2)以第1伸長倍率M1除後所成的除法值(=(M1-M2)/M1)的百分率記數值是成為上述的收縮率(%)。該例中,如已說明,上述收縮率雖為10%,但不限於此。亦即,只要一邊維持著外包裝薄片7a貼合的狀態,且是可
收縮的範圍,即可設定任意的值,例如,可以是2%~80%範圍的任意值,也可以是較窄的5%~50%範圍的任意值,或進一步更窄的7%~30%範圍的任意值。
In addition, here, when it is defined as the value of the shrinkage rate (%) indicating the degree of shrinkage of the
接著的吸收性主體安裝處理部40是如第4A圖及第4B圖表示,對以第2伸長狀態所搬運的外包裝薄片7a在MD方向以第2間距P2安裝吸收性主體3。在此,上述第2間距P2是相當於第2伸長狀態之MD方向的紙尿片1的一個量的長度,但上述第2伸長狀態是如已說明,處於比第1伸長狀態更為收縮的狀態。因此,該第2間距P2是形成僅較上述第1間距P1小於上述收縮率的量的值。又,吸收性主體3是於外包裝薄片7a中安裝在與MD方向相鄰的腳周圍開口部7HL、7HL彼此之間的位置。
The following absorbent body
上述吸收性主體3的安裝處理是例如藉旋轉滾筒裝置41進行。旋轉滾筒裝置41具有:沿著CD方向的轉軸周圍旋轉的旋轉滾筒42;作為使旋轉滾筒42驅動旋轉之驅動源的伺服馬達(未圖示);及在旋轉方向排列設置於旋轉滾筒42的外圍面的複數保持墊43、43…。各保持墊43具有可吸附吸收性主體3的保持面,各保持面是朝著旋轉滾筒42的旋轉半徑方向的外方。並且,藉著在位於保持面之面心的自轉軸周圍的自轉,各保持墊43可以從MD方向朝著CD方向變更保持面保持中的吸收性主體3的長方向的朝向。
The above-mentioned attaching process of the
又,各保持墊43是跨相對於旋轉滾筒42可相對旋轉方向的預定範圍構成可往返移動,並且,上述往返移動動作是藉著未圖示的適當凸輪機構從旋轉滾筒42的旋轉動作所製作出。因此,可對應旋轉滾筒42旋轉方向的位置,變更在旋轉方向相鄰之保持墊43、43彼此的間距。亦即,旋轉方向的第1位置S1中,可使得相鄰的保持墊43、43彼此之間的間距成緊湊的狀態,並且旋轉方向的第2位置S2中,可使得保持墊43、43彼此之間的間距成為大的開放狀態。
In addition, each holding
在此,對於上述第1位置S1,以和MD方向連續之連續體3a的形態供應複數吸收性主體3。並且,在各保持墊43通過該第1位置S1時,同墊43吸附並承接吸收性主體的連續體3a,並以位在其附近的裁斷裝置45分割吸收性主體的連續體3a在保持墊43上生成單張狀的吸收性主體3。並且,在其狀態下,保持墊43雖是藉旋轉滾筒42的旋轉動作朝著旋轉方向的上述第2位置S2移動,但在其移動中,保持墊43進行上述的自轉動作而將吸收性主體3長方向的朝向從MD方向變更為CD方向。又,與此一併於同移動中,保持墊43進行上述的往返移動動作,將相鄰的保持墊43、43彼此的間距變更為第2間距P2。另外,將外包裝薄片7a的搬運路徑接近配置在同第2位置S2。藉此,旋轉滾筒裝置41可以第2間距P2相對於第2伸長狀態的外包裝薄片7a將吸收性主體3安裝在MD方向。
Here, for the first position S1, the plural
接著的二折處理部50是將吸收性主體3安裝後的外包裝薄片7a以相當於紙尿片1的***部7c的CD方向大致中央部為折疊位置而在CD方向折疊為二。並藉以使外包裝薄片7a成為在厚度方向重疊同薄片7a的CD方向之一端部與另一端部的狀態。附帶一提,一端部最終是成為紙尿片1的腹側部7f,而另一端部是成為紙尿片1的背側部7b。
The next two-
上述外包裝薄片7a的二折處理是藉著配置在MD方向的預定位置的二折引導構件(未圖示)來進行。二折引導構件為習知構成,例如是組合適當的複數棒材所構成。並且,在外包裝薄片7a在通過該二折引導構件的配置位置時,藉著同引導構件使外包裝薄片7a以CD方向的大致中央部為折疊位置緩緩地折曲,在通過二折引導構件之後,外包裝薄片7a成為二折狀態。
The two-fold processing of the above-mentioned
附帶一提,該二折處理部50的外包裝薄片7a的伸長狀態是維持著上述的第2伸長狀態,並且,在此伸長狀態下同外包裝薄片7a被送出至MD方向的下方。亦即,兩折處理部50的外包裝薄片7a的搬運速度值是大概維持著與上述第2搬運速度值同值。
Incidentally, the extended state of the
接著的端密封處理部60中,外包裝薄片7a也是維持
著第2伸長狀態。並且,該端密封處理部60是將二折後的外包裝薄片7a固定於該二折狀態。亦即,將藉著二折在厚度方向重疊的外包裝薄片7a之CD方向的一端部與另一端部,在與MD方向相鄰的吸收性主體3、3彼此之間的位置熔敷,固定於二折狀態。再者,所熔敷的部份是作為端密封部jes而殘留在外包裝薄片7a上。並且,上述端密封部jes的形成對象位置為外包裝薄片7a處於第2伸長狀態,因此在MD方向以第2間距P2呈現。因此,同處理部60是在外包裝薄片7a以第2間距P2形成端密封部jes。
In the next end
上述端密封部jes的形成處理是藉熱密封加工裝置61來進行。熱密封加工裝置61具有一邊使外圍面彼此相對,並在沿著CD方向的轉軸周圍旋轉驅動的上下一對輥61u、61d。
The formation process of the end seal portion jes is performed by the heat seal processing device 61. The heat seal processing device 61 has a pair of upper and
上輥61u具有在外圍面被加熱之凸狀的密封圖案部61sp,下輥61d具有承接該密封圖案部61sp的平滑的外圍面。又,密封圖案部61sp是以對應端密封部jes的形狀從上輥61u的外圍面突出。因此,在二折狀態的外包裝薄片7a通過該等上下輥61u、61d彼此之間的輥間隙時,在外包裝薄片7a之中與MD方向相鄰的吸收性主體3、3彼此之間的部份一邊被密封圖案部61sp與下輥61d的外圍面所夾壓而加熱,藉此,在外包裝薄片7a中使得成為紙尿片1寬方向的端部的部份熔融而在該部份形成端密封部jes。
The
附帶一提,該例中,上下輥61u、61d的驅動旋轉的驅動源為伺服馬達(未圖示)。又,在上輥61u的外圍面僅設有一個上述密封圖案部61sp。因此,上輥61u在外包裝薄片7a僅第2間距P2的長度每通過熱密封加工裝置61時進行一旋轉,藉此,以第2間距P2形成端密封部jes。並且,其結果,以相當於第2伸長狀態之紙尿片1的一個量的長度的間距,在外包裝薄片7a有形成端密封部jes。
Incidentally, in this example, the driving source for driving the upper and
接著的分割處理部70中,外包裝薄片7a是維持著第2伸長狀態。因此,以第2間距P2分割固定成二折狀態的外包裝薄片7a,藉此,從外包裝薄片7a以該第2間距P2切離下游端部來生成紙尿片1。
In the next
上述外包裝薄片7a的分割處理是以旋轉切斷裝置71來進行。旋轉切斷裝置71具有使外圍面一邊彼此相對並在沿著CD方向的轉軸周圍驅動旋轉的上下一對輥71u、71d。並且,上輥71u是在外圍面具有切削刃71c的切削輥71u,下輥71d為平滑的外圍面承接切削刃71c的鑽輥71d。又,切削刃71c是例如沿著CD方向延伸的平滑刃,從切削輥71u的外圍面突出。因此,在固定成二折狀態的外包裝薄片7a通過該等上下輥71u、71d彼此之間的輥間隙時,該外包裝薄片7a在端密封部jes的位置被分割,藉此,將外包裝薄片7a的下游端部切離,並使得該
切離後的下游端部成為紙尿片1。
The dividing process of the
附帶一提,該例中,上下輥71u、71d的曲動旋轉的驅動源為伺服馬達(未圖示)。又,切削刃71c是在上輥71u的外圍面僅設有一個。另外,外包裝薄片7a是以第2伸長狀態搬運。因此,每在外包裝薄片7a僅上述第2間距P2的長度通過旋轉切斷裝置71時,使上輥71u及下輥71d分別進行一旋轉,藉此,從外包裝薄片7a僅分割生成一個紙尿片1。並且,所生成的各紙尿片1藉著輸送帶等的適當搬運機構CV送至MD方向的下游側。
Incidentally, in this example, the driving source for the curved rotation of the upper and
以上,雖針對本發明的實施形態已作說明,但上述的實施形態是為容易進行本發明的理解,並非解釋為對本發明的限定。又,本發明在不脫離其主旨的範圍可進行變更或改良,並且本發明當然也包括其等價物。例如,可進行如以下表示的變形。 Although the embodiments of the present invention have been described above, the above embodiments are for easy understanding of the present invention and are not to be construed as limiting the present invention. In addition, the present invention can be changed or improved without departing from the gist thereof, and of course the present invention also includes equivalents thereof. For example, the following modifications can be made.
上述的實施形態是如第5圖表示,紙尿片1的製造生產線LM的外包裝薄片生成處理部10具有波形輥機構13。並藉此,該波形輥機構13在低伸長性薄片9a形成第1部份9a1與第2部份9a2之後,不捲繞同薄片9a而是以其狀態搬運至同處理部10的接合裝置15,但不為此所限定。
In the above-described embodiment, as shown in FIG. 5, the outer packaging sheet
亦即,也可以取代紙尿片1的製造生產線LM具備上述波形輥機構13而在未圖示的其他製造生產線具備同機
構13。再者,在其場合,雖是藉著該其他的製造生產線的波形輥機構13,在低伸長性薄片9a形成第1部份9a1與第2部份9a2,但是在該形成後,一旦將同薄片9a捲繞成滾子狀而成為薄片輥的形態之後,以適當的保管場所保管。並且,在來到使用時期將同薄片輥從保管場所朝著紙尿片1的製造生產線LM移動,並安裝於同製造生產線LM的外包裝薄片生成處理部10具備的適當的送出裝置(未圖示),而從同薄片輥送出低伸長性薄片9a(相當於「準備步驟」),藉此將已形成有第1部份9a1及第2部份9a2的低伸長性薄片9a供應到同處理部10的接合裝置15。
That is, it is also possible to replace the manufacturing line LM of the
但是,如上述,在捲繞形成有第1部份9a1及第2部份9a2的低伸長薄片9a時,因捲繞張力等,會有壓潰低伸長性薄片9a的高度之虞。因此,從利用波形輥機構13不至壓潰賦予低伸長性薄片9a之上述高度的觀點,如上述的本實施形態,以將波形輥13設置在外包裝薄片生成處理部10為佳。
However, as described above, when the low-
上述的實施形態是如第5圖表示,超音波熔敷裝置17的發聲器17h本身構成為非旋轉,並且,其振動面17hs雖是形成平面,但不為此所限制。例如,對於發聲器17h,也可以是和鑽輥17a同樣為輥構成。詳細而言,將該發聲器17h構成為可在沿著CD方向的轉軸周圍旋轉的輥(以下,稱發聲器輥,未圖示),具有以其外圍面作為振動面的功能。再者,此時,成為發聲器輥的外圍
面的振動面是相對於鑽輥17a的外圍面,在接近及分離的方向振動。又,在發聲器輥或鑽輥17a的至少一方的輥的外圍面上,以對應上述接合圖案的配置圖案設置上述的複數突部17at、17at…。
In the above embodiment, as shown in FIG. 5, the
上述的實施形態是如第5圖表示,雖以超音波熔敷裝置17進行外包裝薄片生成處理部10所進行的伸縮性薄片8a與低伸長性薄片9a的接合,但不為此所限制。例如第9圖表示,也可以使用熱密封加工裝置或壓接加工裝置來取代超因波熔敷裝置17。再者,熱密封加工裝置的構成與壓接加工裝置的構成是彼此類似。亦即,兩者構成上的不同點,主要只在於有無輥的加熱的點,任一裝置皆具有在沿著CD方向的轉軸周圍驅動旋轉的上下一對輥19u、19d,並且,該等輥19u、19d是分別構成以和上述超音波熔敷裝置17的場合之鑽輥17a的周速值V17a同值的周速值旋轉。又,在上下一對輥19u、19d之中的至少一方的輥19u(19d)的外圍面上,以對應於上述接合圖案的配置圖案配置有複數突部(未圖示)。
The above-described embodiment is shown in FIG. 5. Although the
因此,根據上述的構成,以伸長至第1伸長狀態為止的伸縮性薄片8a與形成有第1部份9a1及第2部份9a2的低伸長性薄片9a彼此重疊的狀態通過輥19u、19d彼此之間的輥間隙,但在該通過時,藉該等的輥19u、19d兩薄片8a、9a被各突部所夾壓,藉此,在兩薄片8a、9a形成有作為依據上述接合圖案的接合部j、j…的熔敷部或壓接部。
Therefore, according to the aforementioned configuration, the
上述的實施形態雖例示鋸齒圖案作為接合伸縮性薄片8a與低伸長性薄片9a的接合圖案,但不為此所限制。例如,也可以在格眼的各交點分別形成有接合部j、j…的格子狀圖案,也可以此之外的圖案。
Although the above-mentioned embodiment exemplifies a zigzag pattern as a joint pattern for joining the
上述的實施形態是使伸縮性薄片8a的伸縮方向沿著MD方向,因此在低伸長性薄片9a於MD方向交替第1部份9a1與第2部份9a2。並且,在與MD方向相鄰的接合部j、j彼此之間的非接合部jn至少各包含一個第1部份9a1的中央位置C9a1與第2部份9a2的中央位置C9a2地形成接合部j,藉此,在MD方向的收縮時,可確實在非接合部jn形成皺褶,但不限於此。例如,可以如下進行。
In the above-described embodiment, the direction of expansion and contraction of the
首先,如第10圖的透視影像圖表示,使伸縮性薄片8a’的伸縮方向一邊沿著CD方向並將同薄片8a’朝著MD方向搬運,但在該搬運中將同薄片9a’朝CD方向伸長至預定的伸長倍率為止。並且,對於低伸長性薄片9a’也是朝著MD方向一邊搬運,並在同薄片9a’上,使得朝CD方向延伸的第1部份9a1’及比第1部份9a1’較不延伸的第2部份9a2’在CD方向交替排列地形成該等部份9a1’、9a2’。並且,將形成有該第1部份9a1’及第2部份9a2’的低伸長性薄片9a接合於朝上述CD方向伸長狀態的伸縮性薄片8a,。但是,此接合時,在與CD方向相鄰的接合部j’、j’彼此之間的非接合部jn’至少各包含一個第1部份9a1’的中央位置C9a1’與第2部份9a2’的中央位置
C9a2’地形成接合部j’。並且,如此一來,解除CD方向的伸長狀態而朝CD方向收縮時,可確實在非接合部jn’形成沿MD方向的皺褶。
First, as shown in the perspective image view of FIG. 10, the
附帶一提,該例雖是以格子狀圖案形成接合部j’、j’…,但不限於此,也可形成上述的鋸齒圖案。 Incidentally, in this example, although the bonding portions j', j'... are formed in a lattice pattern, it is not limited to this, and the aforementioned zigzag pattern may be formed.
又,相對於低伸長性薄片9a’在CD方向交替形成第1部份9a1’及第2部份9a2’的裝置,可例示如第11A圖及第11B圖表示的輥機構13’。再者,第11A圖是從MD方向的下游側顯示輥機構13’的概略前視圖,第11B圖為第11A圖中的B-B箭頭方向圖。
In addition, the roller mechanism 13' shown in Figs. 11A and 11B can be exemplified for an apparatus in which the first portion 9a1' and the second portion 9a2' are alternately formed in the CD direction with respect to the low-
該輥機構13’具有沿CD方向在轉軸周圍旋轉的上下一對輥13u’、13d’。上輥13u’在CD方向交替地具有大徑部份13m’與小徑部份13v’,同樣地,下輥13d’也在CD方向交替地具有大徑部份13m’與小徑部份13v’。並且,該等輥13u’、13d’是彼此將本身的大徑部份13m’一邊***相對之小徑部份13v’的附近空間並成上下配置,藉此在輥13u’、13d’的旋轉方向的一部份Ab使得彼此的大徑部份13m’、13m’咬合。又,使低伸長性薄片9a沿著MD方向通過該等輥13u’、13d’彼此之間。
The roller mechanism 13' has a pair of upper and
因此,該通過中的低伸長性薄片9a,藉著在一方的輥13u’(13d’)彼此相鄰的大徑部份13m’、13m’彼此,及進入該等大徑部份13m’、13m’彼此之間的小徑部份13v’的另一方的輥13d’(13u’)的大徑部份13m’,變形成三點彎曲狀。並且,此時,在低伸長性薄片9a’與一方的
輥13u’(13d’)的大徑部份13m’的頂面抵接的部份9a2’是與該頂面大致不能相對移動地抵接,藉此,大致不延伸地成為上述的第2部份9a2’,且同樣地,在同薄片9a’與另一方的輥13d’(13u’)的大徑部份13m’的頂面抵接的部份9a2’也是與該頂面大致不能相對移動地抵接,藉此,大致不延伸地成為上述的第2部份9a2’。但是,該等兩個第2部份9a2’、9a2’彼此之間的部份9a1’是根據上述的大徑部份13m’的進入量而延伸,因此,該部份9a1’成為上述第1部份9a1’。並且,藉此,低伸長性薄片9a’在CD方向交替形成有第1部份9a1’與第2部份9a2’。
Therefore, the low-
再者,上述的本實施形態是以抑制低伸長性薄片9a之伸縮性的發現為目的,如第7圖表示,雖是將波形輥13u的山部13m在CD方向的預定位置Pk形成缺口,但也可將與此類似的構成,運用在該第11A圖及第11B圖的輥機構13’。亦即,如第11B圖表示,也可以使一對輥13u’、13d’之中的至少一方的輥13u’的各大徑部份13m’在旋轉方向的預定位置Pk’形成缺口,藉此非連續地設置大徑部份13m’。並且,如此一來,由於在該預定位置Pk’不存在有大徑部份13m’,所以在同位置Pk’不進行上述三點彎曲狀的延伸處理,因此,至少該位置Pk’可抑制伸縮性的發現。其結果,可整體抑制低伸長性薄片9a’之CD方向伸縮性的發現。
Furthermore, the present embodiment described above is for the purpose of suppressing the discovery of the stretchability of the low-
又,將伸縮性性薄片8a朝CD方向伸長的裝置,可例示如適當的加寬裝置(未圖示)。例如,加寬裝置具有
分別對應伸縮性薄片8a的CD方向的各端部而設置的一對滾筒,各滾筒驅動旋轉使得本身的外圍面一邊抵接於伸縮性薄片8a,並將同薄片8a送出朝著MD方向的下游側送出。又,在與同薄片8a抵接的位置,各滾筒的旋轉方向是比沿著MD方向的方向更若干朝向CD方向的外側。因此,在通過各滾筒的位置時,同薄片8a被各滾筒朝著CD方向的兩側所拉伸,藉以使得同薄片8a朝著CD方向的兩側伸長。
In addition, a device that extends the
上述實施形態是如第4A圖表示,外包裝薄片收縮處理部30具有一對夾輥機構31、33以作為使第1伸長狀態的外包裝薄片7a收縮的機構,但只要可使外包裝薄片7a收縮的機構,則不受此所限制。例如,也可設置如第12圖表示的一對S鉤掛輥機構31’、33’來取代上述的一對夾輥機構31、33。亦即,各S鉤掛輥機構31’(33’)具有一邊使得彼此的外圍面相對並在沿著CD方向的轉軸周圍驅動旋轉的一對輥31u’、31d’(33u’、33d’),並且,構成相對於該一對輥31u’、31d’(33u’、33d’)呈S字型掛外包裝薄片7a。因此,藉上述構成,可以一對輥31u’、31d’(33u’、33d’)的外圍面大致不相對滑動地保持著外包裝薄片7a,根據該等輥31u’、31d’(33u’、33d’)的驅動旋轉,可以輥31u’、31d’(33u’、33d’)的周速值作為外包裝薄片7a的搬運速度值來搬運同薄片7a。可使用上述S鉤掛輥機構31’、33’來取代上述的夾輥機構31、33。附帶一提,第12圖的例是將一對
夾輥機構31、33的雙方分別置換成S鉤掛輥機構31’、33’,但可根據場合,僅將任一方的夾輥機構31(33)置換成S鉤掛輥機構31’(33’)。
In the above embodiment, as shown in FIG. 4A, the outer packaging sheet shrinking
j‧‧‧接合部 j‧‧‧Joint
jn‧‧‧非接合部 jn‧‧‧non-joint part
9a2‧‧‧第2部份
9a2‧‧‧
C9a1‧‧‧第1部份的中央位置
C9a1‧‧‧Central position of
C9a2‧‧‧第2部份的中央位置
C9a2‧‧‧Central position of
Ljn‧‧‧長度 Ljn‧‧‧Length
P9a2‧‧‧間距 P9a2‧‧‧spacing
PRj‧‧‧間距 PRj‧‧‧spacing
PjW‧‧‧間距 PjW‧‧‧spacing
Rj‧‧‧非接合部列 Rj‧‧‧non-joined series
Claims (9)
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JPH07213554A (en) * | 1994-02-04 | 1995-08-15 | New Oji Paper Co Ltd | Manufacture of sheet-type elastic combination |
WO2008066007A1 (en) * | 2006-11-27 | 2008-06-05 | Uni-Charm Corporation | Absorbent article and composite sheet |
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US7833917B2 (en) * | 2004-12-30 | 2010-11-16 | Kimberly-Clark Worldwide, Inc. | Extensible and stretch laminates with comparably low cross-machine direction tension and methods of making same |
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JPH07213554A (en) * | 1994-02-04 | 1995-08-15 | New Oji Paper Co Ltd | Manufacture of sheet-type elastic combination |
WO2008066007A1 (en) * | 2006-11-27 | 2008-06-05 | Uni-Charm Corporation | Absorbent article and composite sheet |
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