CN101785727A - The manufacture method of absorbent commodity and absorbent commodity - Google Patents

The manufacture method of absorbent commodity and absorbent commodity Download PDF

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Publication number
CN101785727A
CN101785727A CN201010126065A CN201010126065A CN101785727A CN 101785727 A CN101785727 A CN 101785727A CN 201010126065 A CN201010126065 A CN 201010126065A CN 201010126065 A CN201010126065 A CN 201010126065A CN 101785727 A CN101785727 A CN 101785727A
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CN
China
Prior art keywords
mentioned
flaky material
absorbent commodity
manufacture method
egative film
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201010126065A
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Chinese (zh)
Inventor
奥友美
坂口智
小笠原吉一
伊藤则昭
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Unicharm Corp
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Unicharm Corp
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Filing date
Publication date
Application filed by Unicharm Corp filed Critical Unicharm Corp
Publication of CN101785727A publication Critical patent/CN101785727A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15731—Treating webs, e.g. for giving them a fibrelike appearance, e.g. by embossing
    • 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
    • A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
    • A61F13/15593—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons
    • 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
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/56—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/62—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder
    • B26D1/626—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/18—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets by squeezing between surfaces, e.g. rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B32B2038/0028—Stretching, elongating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/10—Fibres of continuous length
    • B32B2305/20—Fibres of continuous length in the form of a non-woven mat

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

The invention provides a kind of manufacture method of absorbent commodity and the absorbent commodity of making by the manufacture method of absorbent commodity, also can not reduce product quality even improve speed of production, and can reduce manufacturing cost.The manufacture method of absorbent commodity of the present invention is made and to be had back sheet (20) that stickup egative film (120A) and non-woven fabric plate (120B) form and the absorbent commodity (1) that is attached to the absorber (30) on the back sheet (20) at least.The manufacture method of absorbent commodity has: sheet extension process (S20), utilize mold pressing roll mechanism (520) that egative film (120A) is carried along predetermined operating direction (MD) and extend egative film (120A) simultaneously; With sheet bonding process (S40), egative film (120A) is attached on the non-woven fabric plate (120B), form composite sheet (120).

Description

The manufacture method of absorbent commodity and absorbent commodity
Technical field
The present invention relates to the manufacture method of absorbent commodity and the absorbent commodity of making by the manufacture method of absorbent commodity, this absorbent commodity has the composite sheet of posting a plurality of flaky materials and the absorber that is attached on the composite sheet at least.
Background technology
Absorbent commodities such as disposable diaper have the surface patch that contacts with the skin of user, apart from user farthest back sheet and be arranged on surface patch and back sheet between absorber.These surface patch or back sheet exist by a plurality of different forms that constitute of material.For example, back sheet is overlapping does not see through the lamellar bottom thin film of opaque liquid of liquid and the lamellar bottom non-woven fabrics that is arranged on the outside of bottom thin film.
The method that two different sheets of overlapping this material are made composite sheet is disclosed (for example with reference to patent documentation 1).In patent documentation 1 disclosed technology, under the state of the different flaky material of overlapping material, extend by the gear extension method.
The flaky material of general opaque liquid is harder, but can deliquescing by composite sheet is implemented to extend processing.In addition,, then can increase the size of width, therefore can reduce the quantity of material of the line that puts into production, realize the reduction of manufacturing cost if composite sheet is implemented to extend processing.
Patent documentation 1: TOHKEMY 2002-316359 communique (page 4, Fig. 1 etc.)
Summary of the invention
But, in the manufacture method of above-mentioned composite sheet, exist and can't fully tackle the worry of the high speed of speed of production.Constitute the value difference of the flaky material so-called percentage elongation separately of composite sheet, therefore the boundary value difference of elongation in extending processing.
If the speed of production high speed, then the load that applies on the flaky material that production line is carried becomes big, so near the flaky material that elongation extends to the boundary value sustains damage easily.Thereby fabrication yield reduces, and therefore needs to suppress the elongation of flaky material.So, in the manufacture method of in the past composite sheet, be difficult to take into account the high speed of speed of production and the reduction of manufacturing cost.
Therefore, the object of the present invention is to provide a kind of manufacture method of absorbent commodity and the absorbent commodity of making by the manufacture method of absorbent commodity, also can not reduce product quality even improve speed of production, and can reduce manufacturing cost.
In order to address the above problem, the present invention has following feature.At first, first feature of the present invention is a kind of manufacture method of absorbent commodity, this absorbent commodity has composite sheet (back sheet 20) and absorber (absorber 30) at least, this composite sheet has been pasted first flaky material (egative film 120A) with predetermined elongation rate and has been had second flaky material (non-woven fabric plate 120B) less than the percentage elongation of above-mentioned first flaky material, this absorber is attached on the above-mentioned composite sheet, described manufacture method has following operation: operation A (sheet extension process S20), utilize pair of rolls mechanism (mold pressing roll mechanism 520) when carrying above-mentioned first flaky material, to extend above-mentioned first flaky material along predetermined throughput direction (operating direction MD), this pair of rolls mechanism forms a plurality of protuberances in periphery, and clips above-mentioned composite sheet the opposing party's protuberance (protuberance 542) is embedded between a side the protuberance (protuberance 532); And process B (sheet bonding process S40), first flaky material of above-mentioned extension is attached on above-mentioned second flaky material, form above-mentioned composite sheet.
According to the present invention, a kind of manufacture method of absorbent commodity and the absorbent commodity of making by the manufacture method of absorbent commodity can be provided, product quality can be do not reduced even improve speed of production yet, and manufacturing cost can be reduced.
Description of drawings
Fig. 1 is the vertical view of the absorbent commodity 1 of expression present embodiment.
Fig. 2 is the profile (the A-A profile of Fig. 1) of the absorbent commodity 1 of expression present embodiment.
Fig. 3 is the profile (the B-B profile of Fig. 1) of the absorbent commodity 1 of expression present embodiment.
Fig. 4 (a) is the table of percentage elongation of the back sheet 20 of expression present embodiment, and Fig. 4 (b) is the chart of percentage elongation of the back sheet 20 of expression present embodiment.
Fig. 5 (a) is the vertical view of the back sheet 20 of expression present embodiment, and Fig. 5 (b) is the amplification profile (the A-A profile of Fig. 5 (a)) of the back sheet 20 of expression present embodiment.
Fig. 6 is the vertical view that the bottom thin film 20A of present embodiment only is shown.
Fig. 7 is the key diagram of manufacture method of the absorbent commodity of present embodiment.
Fig. 8 (a) is the enlarged perspective of a part of the extension apparatus 500 of expression present embodiment, and Fig. 8 (b) is the axial section of the mold pressing roll mechanism 520 of present embodiment.
Fig. 9 is the axonometric chart of the spreading roll mechanism 600 of expression present embodiment.
Figure 10 is the axial section of the 520A of mold pressing roll mechanism of expression modification.
Symbol description
1... absorbent commodity, 10... surface patch, 20... back sheet, 20A... bottom thin film, 20B... bottom non-woven fabrics, 20E... edge part, 21... extension, 21A... central extension, 21B... extension, end, 21L... part of rarefaction, 21T... compact part, 22... non-extension, 30... absorber, 30A... mixed powder, 30B... coating member, 40... waist alar part, 40A... preceding flank section, 40B... rear side alar part, 41... fastening portion, 50... flank section, 51 (51A～51D) ... thread like body, 60... lateral plate, 120... composite sheet, 120A... egative film (first flaky material), 120B... non-woven fabric plate (second flaky material), 120E 1, 120E 2... sidepiece, 500... extension apparatus, 510... warm-up mill, 520... mold pressing roll mechanism, 532,542... protuberance, 600... spreading roll mechanism, the 610... first spread rolls mechanism, 611... first upside are pressed pressure roller, 612... first downside and are pressed that pressure roller, the 620... second spread rolls mechanism, 621... second upside are pressed pressure roller, 622... second downside is pressed pressure roller
The specific embodiment
With reference to the accompanying drawings the manufacture method of absorbent commodity of the present invention and the embodiment of absorbent commodity are described.In the record of accompanying drawing, identical or similar part is adopted identical or similar symbol.But, should be noted in the discussion above that accompanying drawing is that schematically the ratio of each size etc. are different with reality.
Therefore, should judge concrete size etc. with reference to following explanation.In addition, size relationship each other, part that ratio is different have certainly also been comprised each other at accompanying drawing.
At first, with reference to the structure of description of drawings by the absorbent commodity 1 of the manufacture method manufacturing of the absorbent commodity of present embodiment.Fig. 1 is the vertical view of the absorbent commodity 1 of expression present embodiment.Fig. 2 is the profile (the A-A profile of Fig. 1) of the absorbent commodity 1 of expression present embodiment.Fig. 3 is the profile (the B-B profile of Fig. 1) of the absorbent commodity 1 of expression present embodiment.In the present embodiment, absorbent commodity 1 is the diaper of deploying type.
Shown in Fig. 1～3, absorbent commodity 1 have towards from the preceding waistline (abdominal part side) of user backward the direction of waistline (posterior dorsal) (hereinafter referred to as length direction L) be the shape of lengthwise.
Absorbent commodity 1 has Attacking Midfielder's region S1 corresponding to the preceding waistline of user at length direction L, corresponding to the low back region S2 of the back waistline of user and under and the crotch zone territory S3 between Attacking Midfielder's region S1 and low back region S2 corresponding to the crotch of user.
In addition, absorbent commodity 1 has a pair of lateral region C2 of middle section C1 that comprises absorber 30 described later and the outside that is positioned at middle section C1 with respect to width W at the width W with length direction L-orthogonal.
This absorbent commodity 1 has surface patch 10, back sheet 20 and absorber 30.On absorbent commodity 1, be provided with waist alar part 40 and flank section 50.
Surface patch 10 is arranged on a side that contacts with the skin of user.Surface patch 10 disposes in the mode that wraps into absorber 30.Surface patch 10 is formed by liquid permeability sheets such as hydrophilic non-woven or fabric, opening plastic sheeting, opening hydrophobicity non-woven fabrics.
Back sheet 20 is provided with the outside of absorbent commodity 1 in use.Back sheet 20 is formed by the flaky bottom thin film 20A (first flaky material) of the opaque liquid (for example polyethylene) that does not see through liquid and the flaky bottom non-woven fabrics 20B (second flaky material) that is arranged on the outside of bottom thin film.
Bottom thin film 20A has been implemented the length of the width W of extension described later processing back (extending the back), shorter than the length of the width W of bottom non-woven fabrics 20B, and longer than the length of the width W of absorber 30.This back sheet 20 constitutes the composite sheet that is fitted with a plurality of flaky materials.To describe back sheet 20 in detail later on.
Absorber 30 is arranged between surface patch 10 and the back sheet 20.Absorber 30 absorbs the body fluid of user.Absorber 30 is formed by the coating member 30B of the mixed powder 30A of pulverizing slurry, superabsorbent polymer etc. and the thin paper of covering mixed powder 30A etc.
Waist alar part 40 is arranged on the Attacking Midfielder's region S1 and low back region S2 on the length direction L.Waist alar part 40 has a pair of preceding flank section 40A that is positioned at Attacking Midfielder's region S1 and a pair of rear side alar part 40B that is positioned at low back region S2.
Preceding flank section 40A forms by the lateral plate 60 that is attached on the back sheet 20 is stretched out towards the width W outside.As substituting of lateral plate 60, preceding flank section 40A also can form by bottom non-woven fabrics 20B is stretched out.
With preceding flank section 40A similarly, rear side alar part 40B forms by lateral plate 60 is stretched out towards the width W outside.With preceding flank section 40A similarly, as substituting of lateral plate 60, rear side alar part 40B also can form by bottom non-woven fabrics 20B is stretched out.On the face that absorber 30 1 sides are set of rear side alar part 40B, be provided for the fastening portion 41 of fastening in Attacking Midfielder's region S1.
Fastening portion 41 is for example formed by the face securing member.At this moment, the face securing member is a male parts, and the zone that the fastening portion 41 of pro-waistline region S 1 wants fastening is as by fastening portion female part being set.If Attacking Midfielder's region S1 is made of non-woven fabrics, then Attacking Midfielder's region S1 self also can play by the effect of fastening portion.
Flank section 50 is than absorber 30 L setting alongst outside width W.The thread like body 51 that is made of the rubber that has retractility on length direction L (for example polyurethane) is being set on the flank section 50.Thread like body 51 is to be engaged in back sheet 20 at the tensile state of length direction L.Thread like body 51 is made of the first thread like body 51A, the second thread like body 51B, the 3rd thread like body 51C and the 4th thread like body 51D laterally from width W inboard.
The structure of above-mentioned back sheet 20 is described below with reference to accompanying drawings.Fig. 4 (a) is the table of percentage elongation of the back sheet 20 of expression present embodiment.Fig. 4 (b) is the chart of percentage elongation of the back sheet 20 of expression present embodiment.Fig. 5 (a) is the vertical view of the back sheet 20 of expression present embodiment.Fig. 5 (b) is the amplification profile (the A-A profile of Fig. 5 (a)) of the back sheet 20 of expression present embodiment.
Shown in Fig. 4 (a) and Fig. 4 (b), the percentage elongation of the bottom non-woven fabrics 20B of formation back sheet 20 is less than the percentage elongation of bottom thin film 20A.
Shown in Fig. 5 (a), the bottom thin film 20A that constitutes back sheet 20 has extension 21 and non-extension 22.The bottom non-woven fabrics 20B that constitutes back sheet 20 does not implement to extend processing.
Extension 21 is to push the zone that bottom thin film 20A forms by the thickness direction T at bottom thin film 20A.That is to say that extension 21 is zones of lacking than non-extension 22 by the weight per unit area (quality of per unit area) that enforcement extension processing forms.
Shown in Fig. 5 (b), extension 21 alternately forms the big part of rarefaction 21L of elongation and the elongation compact part 21T less than part of rarefaction 21L.Part of rarefaction 21L and compact part 21T with on the length direction L continuously and on width W, arrange a plurality of state configuration.
Extension 21 has extension, the end 21B on a central extension 21A that is positioned at middle section C1 and the part that is positioned at lateral region C2.The elongation of preferred central extension 21A is greater than the elongation of extension, end 21B.In the present embodiment, the part of lateral region C2 is meant the crotch zone territory S3 except the edge portion zone C 3 that comprises edge part 20E that is positioned at the width W outside.
At this, extension, end 21B needn't non-ly be arranged on the part of lateral region C2, also can be arranged on whole lateral region C2, as shown in Figure 6, also can not be arranged on crotch zone territory S3.In addition, the extension 21A of central authorities also needn't non-ly be arranged on whole middle section C1, as long as be arranged at least a portion of middle section C1, for example as shown in Figure 5, can be arranged on the middle section C1 except the edge portion zone C 4 that comprises edge part 20E that is positioned at the length direction L outside.
This extension 21 is preferably expanded with the multiplying power below 3.0 times with respect to back sheet 20 is implemented to extend the preceding back sheet 20 of processing.In addition, extension 21 is being engaged in bottom non-woven fabrics 20B (with reference to Fig. 7) under by the expanding and the smooth state that flattening on the width W.
Non-extension 22 is the zones of not pushing bottom thin film 20A at thickness direction T.That is to say that non-extension 22 is the zones except extension 21.Non-extension 22 is different from extension 21, does not extend at width W.Non-extension 22 is arranged at a pair of lateral region C2.
The manufacture method of the absorbent commodity of above-mentioned absorbent commodity 1 is made in explanation with reference to the accompanying drawings.Fig. 7 is the key diagram of manufacture method of the absorbent commodity of present embodiment.
As shown in Figure 7, in the manufacture method of absorbent commodity, make the absorbent commodity 1 that has back sheet 20 and absorber 30 at least.Specifically, the manufacture method of absorbent commodity comprises that sheet heating process S10, sheet extension process S20, sheet expanding operation S30, sheet bonding process S40, absorber engage operation S50, thread like body arrangement step S60, flank section forms operation S70, waist alar part arrangement step S80 and product cuts off operation S90.
In sheet heating process S10, utilize warm-up mill 510 described later, at heating egative film 120A in the successive egative film 120A of throughput direction (hereinafter referred to as operating direction MD) feeding bottom thin film 20A.
In sheet extension process S20, utilize mold pressing roll described later mechanism 520 to push the egative film 120A that has heated at the thickness direction T of egative film 120A.Thereby, extend egative film 120A at the width W of egative film 120A (promptly with the orthogonal crisscross CD of operating direction MD), on egative film 120A, form extension 21 and non-extension 22.Preferred in addition, the elongation of central extension 21A is greater than the elongation of extension, end 21B.
In sheet expanding operation S30, utilize egative film 120A expanding (expansion) that spreading roll described later mechanism 600 will extend to the width W outside of egative film 120A to becoming flat condition.
In sheet bonding process S40, paste the egative film 120A and the successive non-woven fabrics 120B of bottom non-woven fabrics 20B of expanding, form composite sheet 120.At this moment, egative film 120A is attached on the non-woven fabrics 120B under the width W expanding extension 21 and the smooth state that flattening.
Engage among the operation S50 at absorber, on the composite sheet 120 that forms, engage the absorber 30 that (mounting) engages surface patch 10.
In thread like body arrangement step S60, under the operating direction MD with respect to composite sheet 120 has stretched the state of thread like body 51, this thread like body 51 is configured on the composite sheet 120 corresponding with the width W outside of absorber 30.
Form among the operation S70 in flank section, by the non-woven fabric plate 120B that turns back and stretch out to width W than egative film 120A to width W inboard, 120B encases thread like body 51 with this non-woven fabric plate, and forms flank section 50.
In waist alar part arrangement step S80, flank section 40A before preformed and the rear side alar part 40B that fastening portion 41 has been installed are engaged in composite sheet 120.
Cut off among the operation S90 at product, the composite sheet 120 that disposing absorber 30, flank section 50 and waist alar part 40 along the size that width W cuts into a product, thus, is made absorbent commodity 1.
The structure of the extension apparatus 500 that uses in above-mentioned heating process S10 and sheet extension process S20 is described with reference to the accompanying drawings.Fig. 8 (a) is the amplification stereogram of a part of the extension apparatus 500 of expression present embodiment.Fig. 8 (b) is the axial section of the mold pressing roll mechanism 520 of expression present embodiment.
Shown in Fig. 8 (a), extension apparatus 500 is extending this egative film 120A on crisscross CD when operating direction MD carries egative film 120A.Extension apparatus 500 has warm-up mill 510 and mold pressing roll mechanism 520.
Warm-up mill 510 is arranged on the upstream side of operating direction MD than mold pressing roll mechanism 520.Warm-up mill 510 heated egative film 120A before egative film 120A is by mold pressing roll mechanism 520 along operating direction MD rotation simultaneously.The temperature that warm-up mill 510 is configured to be scheduled to (for example 100 degree).
The egative film 120A that 520 pairs in mold pressing roll mechanism has passed through warm-up mill 510 heats and push egative film 120A on the thickness direction T of egative film 120A.The temperature that mold pressing roll mechanism 520 is configured to be scheduled to (for example 60 degree).
Shown in Fig. 8 (b), such mold pressing roll mechanism 520 is made of pair of rolls mechanism, and this pair of rolls mechanism forms a plurality of protuberances (so-called extension sword) in periphery, is entrenched between a side the protuberance 532 at the protuberance 542 of the opposing party under the state that clips egative film 120A.
The shape of protuberance 532 and protuberance 542 periphery from roller mechanism in the section of the axis direction of roller mechanism is tapered toward the outer side.In the present embodiment, the shape of protuberance 532 and protuberance 542 is general triangular in the section of the axis direction of roller mechanism.
Protuberance 532 and protuberance 542 use ferritic stainless steel with excellent formability (SUS4302B).For example, the thickness t 2 of the thickness t 1 of protuberance 532 and protuberance 542 is respectively 0.7～1.0mm.In addition, preferably implement attrition process at the outer surface of protuberance 532 and protuberance 542.
In such extension apparatus 500, for example the temperature of warm-up mill 510 is 100 degree.The temperature of mold pressing roll 520 is 60 degree.Be 1.6mm along length (L) when protuberance 532 and protuberance 542 are chimeric with the orthogonal direction of axis direction of roller mechanism.The interval (p2) of the interval of a plurality of protuberances 532 (p1) and a plurality of protuberance 542 is 2.5mm.According to this condition, extension apparatus 500 can be implemented 1.3 times expansion processing with respect to egative film 120A being implemented extend the preceding egative film 120A of processing.
In extension apparatus 500,, can change the multiplying power (extension ratio) that egative film 120A extends on width W by suitably changing above-mentioned each condition.In addition, also can be different with the height of the corresponding protuberance 532 of the middle section C1 of egative film 120A and lateral region C2, protuberance 542.Thus, can change extension ratio among the middle section C1 and the extension ratio among the lateral region C2.
Structure to the spreading roll mechanism 600 that uses in above-mentioned expanding operation S30 describes with reference to the accompanying drawings.Fig. 9 is the axonometric chart of the spreading roll mechanism 600 of expression present embodiment.
As shown in Figure 9, spreading roll mechanism 600 will become flat condition by the egative film 120A expanding that mold pressing roll mechanism 520 has extended towards the crisscross CD outside of egative film 120A.As a result, the extension 21 (part of rarefaction 21L and compact part 21T) that is arranged at extension 21 becomes smooth, extension 21 expandings.Spreading roll mechanism 600 has the first spread rolls mechanism 610 and the second spread rolls mechanism 620.
The sidepiece 120E of the 610 clamping egative film 120A of the first spread rolls mechanism 1The first spread rolls mechanism 610 have first upside by pressure roller 611 and first downside by pressure roller 612.
First upside is disposed at the one side side (upper face side) of egative film 120A by pressure roller 611.First upside by pressure roller 611 with state of contact above the egative film 120A under be that the center is along the transport direction rotation of sending egative film 120A with the axle center.
First downside clips egative film 120A by pressure roller 612 and is configured in the opposition side (following side) of first upside by pressure roller 611.Press pressure roller 612 and first upside is pressed clamping egative film 120A between the pressure roller 611 at first downside.First downside under state of contact below egative film 120A is that the center is along the transport direction rotation of sending egative film 120A with the axle center by pressure roller 612.
Press pressure roller 611 and first downside is pressed in the pressure roller 612 at first upside, the centre line C L side of egative film 120A is positioned at the forward position on the operating direction MD.That is to say, first upside by pressure roller 611 and first downside by pressure roller 612 in the overlooking of egative film 120A, tilt with respect to crisscross CD.Thereby first upside can with egative film 120A expanding become flat condition with first downside by pressure roller 612 by pressure roller 611.
The other side 120E of the 620 clamping egative film 120A of the second spread rolls mechanism 2The second spread rolls mechanism 620 have second upside by pressure roller 621 and second downside by pressure roller 622.The structure of the second spread rolls mechanism 620 is identical with the first spread rolls mechanism 610.Therefore, omission is to the explanation of the second spread rolls mechanism 620.
In such spreading roll mechanism 600, by suitably change first upside by pressure roller 611 and first downside by pressure roller 612 with respect to the inclination angle of crisscross CD, second upside by pressure roller 621 and second downside by the inclination angle of pressure roller 622 with respect to crisscross CD, can change the expanding degree of egative film 120A.
In the present embodiment of above explanation, after having extended egative film 120A, the egative film 120A that has extended is attached on the non-woven fabric plate 120B.That is to say, be not that percentage elongation different egative film 120A and non-woven fabric plate 120B are extended processing together, but only egative film 120A extended processing.Thus, because percentage elongation do not extend less than the non-woven fabric plate 120B of egative film 120A, so non-woven fabric plate 120B is difficult to be subjected to the damage that the high speed because of speed of production produces.Therefore, the manufacturing that can reduce non-woven fabric plate 120B is bad, suppresses the decline of fabrication yield.Thereby can in the high speed of realizing speed of production, make back sheet 20 (egative film 120A) softness, can suppress the reduction of product quality.
In addition, in technology in the past, add man-hour in that egative film 120A and non-woven fabric plate 120B are extended, need extend processing corresponding to the percentage elongation of non-woven fabric plate 120B.Relative with it, in the present embodiment,, therefore can further increase the elongation of egative film 120A owing to only percentage elongation is extended processing greater than the egative film 120A of non-woven fabric plate 120B.Therefore, can reduce the quantity of material of the egative film 120A of the line that puts into production, realize the reduction of manufacturing cost.
In the present embodiment, the elongation of preferred central extension 21A is greater than the elongation of extension, end 21B.Egative film 120A is transferred being pulled under the state of operating direction MD.Therefore, egative film 120A has been acted on tension force on operating direction MD, so the edge portion of egative film 120A enters (being easy to generate so-called indentation phenomenon) easily towards the width inboard.Therefore, be difficult on the 21B of the extension, end of egative film 120A, extend processing equably.So, can increase the elongation of central extension 21A energetically, make egative film 120A integral body constant to the extent of width W.
In the present embodiment, the length of the width W after bottom thin film 20A extends, shorter than the length of the width W of bottom non-woven fabrics 20B, and longer than the length of the width W of absorber 30.That is to say, bottom thin film 20A and bottom non-woven fabrics 20B non-overlapping portions are set.Thus, the body fluid of the user that is absorbed by absorber 30 can not leak to bottom non-woven fabrics 20B side (being the outside of absorbent commodity 1), and can improve the aeration among the lateral region C2.
In the present embodiment, bottom thin film 20A (the egative film 120A after the extension) is arranged on crotch zone territory S3.Thus,, can reduce the quantity of material of egative film 120A, realize the reduction of manufacturing cost, and improve the aeration among pro-waistline region S 1, the low back region S2 not having pro-waistline region S 1, low back region S2 to be provided with under the situation of bottom thin film 20A.
In the present embodiment, between sheet extension process S20 and sheet bonding process S40, carry out sheet expanding operation S30.That is, egative film 120A is pushed by mold pressing roll mechanism 520, thereby forms the extension 21 that is provided with small concavo-convex (part of rarefaction 21L and compact part 21T).Then, the egative film 120A small concavo-convex expanding that will temporarily form become to become smooth (flat condition) by spreading roll mechanism 600.Then, egative film 120A is to engage with non-woven fabric plate 120B under the state of flat condition at temporary transient form small concavo-convex.
Egative film 120A is being transferred under the state of operating direction MD tractive, therefore produces the phenomenon (so-called indentation phenomenon) of the narrowed width of egative film 120A sometimes.But, in the present embodiment, as mentioned above, become in expansion and engage non-woven fabric plate 120B on the egative film 120A of flat condition.That is to say, before the narrowed width of the egative film 120A that temporarily becomes flat condition, non-woven fabric plate 120B is engaged in egative film 120A.Therefore, the small concavo-convex flat condition that is maintained.Therefore, can reduce the quantity of material of the egative film 120A of the line that puts into production, even and also can suppress effectively to bring sense of discomfort under sheet 20 and the situation that user contacts overleaf to user.
In addition, protuberance 532 and protuberance 542 use ferritic stainless steel with excellent formability (SUS4302B).For example, the thickness t 2 of the thickness t 1 of protuberance 532 and protuberance 542 is respectively 0.7～1.0mm.Thus, can in the durability of having considered protuberance 532 and protuberance 542, realize the high speed of speed of production, and make back sheet 20 (egative film 120A) softness.
Especially preferably implement attrition process at the outer surface of protuberance 532 and protuberance 542.Thus, compare with the situation that does not have to implement attrition process at the outer surface of protuberance 532 and protuberance 542, the friction between protuberance 532 and protuberance 542 and the egative film 120A reduces.Therefore, can be suppressed at egative film 120A and go up generation opening (pin hole).
(modification)
The mold pressing roll mechanism 520 of above-mentioned embodiment can followingly change.The part identical with the mold pressing roll mechanism 520 of above-mentioned embodiment is marked with identical symbol, serves as main describing with different parts.
Figure 10 is the axial section of the 520A of mold pressing roll mechanism of modification.In the above-described embodiment, the shape of protuberance 532 and protuberance 542 is general triangular in the section of the axis direction of roller mechanism.Relative with it, in modification, shown in Figure 10 (a), the shape of protuberance 532 and protuberance 542 is essentially rectangular in the section of the axis direction of roller mechanism.Protuberance 532 and protuberance 542 have been implemented surface chamfer R (for example R0.2mm).Certainly, and nonessential protuberance 532 and protuberance 542 implemented surface chamfer R.
At this, shown in Figure 10 (b), the shape of protuberance 532 and protuberance 542 in the section of the axis direction of roller mechanism for roughly trapezoidal.This moment is preferred, forms each side of protuberance 532 and protuberance 542, with respect to having tilted relative under the state of predetermined angle (for example 30～90 degree) with the orthogonal direction of the axis direction of roller mechanism.
(other embodiments)
As mentioned above, disclose content of the present invention, but should not be understood as and be used for limiting the present invention becoming the argumentation of a part of the disclosure and accompanying drawing by embodiments of the present invention.For a person skilled in the art, according to the disclosure, be easy to expect various displaced embodiments, embodiment and application technology.
For example, embodiments of the present invention can be carried out following change.Specifically,, be not limited to the article that illustrate in the embodiment especially, can set according to purpose about the structure of absorbent commodity 1.For example, be that the diaper of deploying type is illustrated to absorbent commodity 1, but be not limited thereto that absorbent commodity 1 also can be diaper, sanitary napkin, liner of pants type etc.
The structure that surface patch 10, back sheet 20, absorber 30, waist alar part 40 and flank section 50 are not limited to illustrate in the embodiment also can be different structure, can suitably change according to purpose.For example, be by being illustrated that the face securing member forms to the fastening portion 41 that is arranged at rear side alar part 40B, but be not limited thereto, also can form by adhesive tape etc.And, be that rubber is illustrated to thread like body 51, but be not limited thereto, can be sheet also for example with retractility, get final product so long as have the parts of retractility.
In addition, extension apparatus 500 is illustrated as an example that is used for formation extension 21 on bottom thin film 20A, can certainly adopt other structures, as long as form extension 21 on the sheet 20 overleaf.For example, extension apparatus 500 needn't have warm-up mill 510 and mold pressing roll mechanism 520, can only be made of mold pressing roll mechanism 520.
In addition, spreading roll mechanism 600 is had the first spread rolls mechanism 610 and the second spread rolls mechanism 620 is illustrated, but be not limited thereto, have any one party at least and get final product, also can be at the sidepiece 120E of egative film 120A 1Or the other side 120E 2Side expanding egative film 120A.
In addition, the manufacture method of absorbent commodity is had sheet heating process S10～product to be cut off operation S90 and is illustrated, but be not limited thereto,, can suitably set according to purpose as long as have sheet extension process S20, sheet bonding process S40 and absorber joint operation S50 at least.
In addition, in the manufacture method of absorbent commodity, the situation of bottom thin film 20A being implemented to extend processing has been described, but has been not limited thereto, except bottom thin film 20A, also can also implement to extend processing to bottom non-woven fabrics 20B dividually with bottom thin film 20A.At this moment, preferably, change extent according to the percentage elongation of bottom non-woven fabrics 20B of the percentage elongation that is different from bottom thin film 20A.
In addition, in the manufacture method of absorbent commodity, the situation of bottom thin film 20A being implemented to extend processing has been described, but has been not limited thereto, also can implement to extend processing other sheets.For example, when surface patch 10 is made of 2 sheets, can implement to extend processing to the big sheet of arbitrary percentage elongation.
Like this, the present invention comprises various embodiments that are not recorded in this etc. certainly.Therefore, from above-mentioned explanation, technical scope of the present invention is only limited by the technical scheme of claims.

Claims (8)

1. the manufacture method of an absorbent commodity, this absorbent commodity has composite sheet and absorber at least, this composite sheet has been pasted first flaky material with predetermined elongation rate and has been had second flaky material less than the percentage elongation of above-mentioned first flaky material, this absorber is attached on the above-mentioned composite sheet, and described manufacture method has following operation:
Operation A, utilize pair of rolls mechanism when carrying above-mentioned first flaky material, to extend above-mentioned first flaky material along predetermined throughput direction, this pair of rolls mechanism forms a plurality of protuberances in periphery, and clips above-mentioned composite sheet the opposing party's protuberance is embedded between a side the protuberance; And
Process B is attached to first flaky material of above-mentioned extension on above-mentioned second flaky material, forms above-mentioned composite sheet.
2. the manufacture method of absorbent commodity as claimed in claim 1 is characterized in that, above-mentioned first flaky material is the opaque liquid sheet that does not see through liquid,
Above-mentioned second flaky material is a non-woven fabrics.
3. the manufacture method of absorbent commodity as claimed in claim 1 is characterized in that, in above-mentioned operation A, extends the length of the width of above-mentioned first flaky material.
4. the manufacture method of absorbent commodity as claimed in claim 3, it is characterized in that, the elongation that above-mentioned first flaky material extends in the middle section of width is greater than the elongation that extends in the edge portion zone that is arranged in the width outside than above-mentioned middle section.
5. as the manufacture method of each described absorbent commodity in the claim 1 to 4, it is characterized in that, also has following operation, this operation is carried out between above-mentioned operation A and above-mentioned process B, at least one side's the spreading roll mechanism of sidepiece of the width of above-mentioned first flaky material is located in utilization, and above-mentioned first flaky material is become flat condition towards the width outside of above-mentioned first flaky material expanding.
6. absorbent commodity, have the surface patch that contacts with the skin of user, apart from user farthest back sheet and be arranged on above-mentioned surface patch and above-mentioned back sheet between absorber;
At least one side of above-mentioned surface patch or above-mentioned back sheet has first flaky material that possesses the predetermined elongation rate and second flaky material that possesses less than the percentage elongation of above-mentioned first flaky material;
Above-mentioned first flaky material overlaps on above-mentioned second flaky material under the state that has been extended.
7. absorbent commodity as claimed in claim 6 is characterized in that, the length of the width after the extension of above-mentioned first flaky material is shorter than the length of the width of above-mentioned second flaky material, and longer than the length of the width of above-mentioned absorber.
8. absorbent commodity as claimed in claim 6 is characterized in that, above-mentioned first flaky material after the extension be set at corresponding to the corresponding position, crotch zone territory under the crotch of user.
CN201010126065A 2009-08-31 2010-02-26 The manufacture method of absorbent commodity and absorbent commodity Pending CN101785727A (en)

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CN106937903A (en) * 2017-03-07 2017-07-11 广东鑫雁科技有限公司 A kind of amenities core material hot pressing complex method
CN111432767A (en) * 2017-12-08 2020-07-17 王子控股株式会社 Apparatus and method for forming compressed groove, and absorbent article

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JP5291224B1 (en) * 2012-04-27 2013-09-18 ユニ・チャーム株式会社 Disposable diaper and method for manufacturing disposable diaper
JP6018164B2 (en) * 2014-12-09 2016-11-02 ユニ・チャーム株式会社 Absorbent article manufacturing method and absorbent article manufacturing apparatus

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CN104825278A (en) * 2011-12-08 2015-08-12 尤妮佳股份有限公司 Disposable clothing article
CN106937903A (en) * 2017-03-07 2017-07-11 广东鑫雁科技有限公司 A kind of amenities core material hot pressing complex method
CN111432767A (en) * 2017-12-08 2020-07-17 王子控股株式会社 Apparatus and method for forming compressed groove, and absorbent article

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TW201117780A (en) 2011-06-01

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Application publication date: 20100728