CN108938212A

CN108938212A - The manufacturing method and manufacturing device of sheet component relevant to absorbent commodity

Info

Publication number: CN108938212A
Application number: CN201810881787.5A
Authority: CN
Inventors: 赤野行功; 嵯峨知行
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2014-11-06
Filing date: 2014-11-06
Publication date: 2018-12-07
Anticipated expiration: 2034-11-06
Also published as: JP5779738B1; CN108938212B; JPWO2016071981A1; WO2016071981A1; CN107072825A; CN107072825B

Abstract

The manufacturing method of sheet component relevant to absorbent commodity has follow steps: conveying utilizes the fixed composite sheet of thermoplastic adhesive in the conveying direction；By cutting off elastomeric element at least one position in the conveying direction of region corresponding with low stretching region, to be arranged in composite sheet along conveying direction and form high stretching region and low stretching region.In the step of forming high stretching region and low stretching region, heating element heats the rotary body of at least one party in cutting rotary body and anvil block rotary body, so that the fusing point of the temperature deficiency bonding agent of rotary body, cutting rotary body and anvil block rotary body are rotated in the opposite mode of mutual outer peripheral surface and when composite sheet pass through between cutting rotary body and anvil block rotary body along conveying direction, the cutter and anvil block rotary body for cutting the outer peripheral surface of rotary body clamp composite sheet, to form the pressure contact portion of the first serialgram and the second serialgram at the position of composite sheet clamped and cut off elastomeric element.

Description

The manufacturing method and manufacturing device of sheet component relevant to absorbent commodity

The application is entitled " manufacturing method and manufacturing device of sheet component relevant to absorbent commodity ", the world The applying date is that November 6, international application no PCT/JP2014/079417, national application number in 2014 are 201480083184.0 application for a patent for invention divisional application.

Technical field

The present invention relates to the manufacturing methods of sheet component relevant to the absorbent commodities such as disposable diaper and manufacture to fill It sets.

Background technique

In the past, piece was being used in the manufacture of known disposable diaper as the absorbent commodities of discharged liquids such as urine are absorbed Shape component, the sheet component have the high stretching region arranged along prescribed direction and compared with high stretching region in prescribed direction The low low stretching region of retractility.

Sheet component 20s' is generated as described below.Fig. 1 is the skeleton diagram that its generating process is indicated with top view.

Firstly, as shown in Fig. 1, the composite sheet 20s1' of the material as sheet component 20s' is conveyed along the direction MD.? This, composite sheet 20s1' is following composite sheet: the lastex (elastic as continuous elastomeric element in the MD direction String non-individual body 27s', 27s' ...) is inserted in continuous first company in the MD direction in the MD direction with elongation state Continuous piece 21s' and in the MD direction between continuous second serialgram 22s'.In addition, the non-individual body 27s' of the lastex, Fixation of the 27s' ... to each serialgram 21s', 22s' discontinuously carries out in the MD direction.That is, the non-individual body of the lastex 27s', 27s' ... are in region AH1' corresponding with above-mentioned high stretching region AH', using as an example of thermoplastic adhesive Hot-melt adhesive is fixed, but is not fixed in region AL1' corresponding with above-mentioned low stretching region AL'.

Moreover, utilizing the cutter of the cutting roller of device 50' when composite sheet 20s1' passes through cutter device 50' (not shown) and anvil roller (not shown) clamp the region AL1' corresponding with low stretching region AL' in composite sheet 20s1', by This, cuts off non-individual body 27s', 27s' ... of lastex at a position PC in the MD direction.Then, it has been cut off Lastex 27sd', 27sd' ... are shunk to region AH1', AH1' corresponding with high stretching region AH', AH' respectively, high as a result, Stretching region AH' and low stretching region AL' is arranged along the direction MD and is formed in composite sheet 20s1'.In addition, and handling above Generate above-mentioned sheet component 20s'.

Citation

Patent document

Patent document 1: Japanese Unexamined Patent Application Publication 2014-511753

Subject to be solved by the invention

Here, preferably, at the position PC1 clamped, only being cut from the viewpoint of inhibiting sheet component 20s' damage Non-individual body 27s', 27s' ... of disconnected lastex, and do not cut off the first and second serialgram of composite sheet 20s1' as much as possible 21s', 22s', moreover, in situation as described above, will form at the position PC1 clamped the first serialgram 21s' and The pressure contact portion j of second serialgram 22s'.

But in patent document 1 and it is not disclosed in the case where forming pressure contact portion j at the PC1 of the position.

In addition, the countermeasure of the cutting damage about the non-individual body 27s' for inhibiting lastex, also not public in patent document 1 It opens.Here, as one of its countermeasure, it is contemplated that following countermeasure: by being heated to cutting roller or anvil roller, when clamping Promote the softening of thermoplastic first and second serialgram 21s', 22s', power when being easy as a result, by above-mentioned cramping clamps Power acts on the non-individual body 27' of lastex.

But if these rollers are excessively heated, when being contacted by the composite sheet 20s1' of the device with the roller etc., greatly The heat of amount may be transmitted from the roller to composite sheet 20s1', and the hot-melt adhesive in piece 20s1' can melt as a result,.Then, should Bonding agent has high fluidity under its molten condition and adheres to and be piled up in roller, moreover, continuing in the accumulation and making Attachment, which becomes, to be fallen etc. when being involved on composite sheet 20s1' after big bulk, will lead to the volume on composite sheet 20s1' The diaper for having entered the part of the attachment becomes rejected product.Therefore, expect a kind of to be able to suppress attachment of the bonding agent to roller Technology.

Summary of the invention

The present invention is made in view of existing issue as described above, its object is to: it is loose when being cut off in composite sheet Thermoplastic first serialgram and thermoplastic second is formed while the elastomeric elements such as the non-individual body of stringing at this location to connect When the pressure contact portion of continuous piece, the cutting damage of the elastomeric element can not only be inhibited, and can effectively prevent from composite sheet Thermoplastic adhesive adheres to cutting rotary body or anvil block rotary body.

Solution for solving the problem

Main inventive for achieving the above object is the manufacturing method of sheet component relevant to absorbent commodity, described Sheet component has the high stretching region and low stretching region arranged along prescribed direction, and the low stretching region is in the regulation side Upward retractility is lower than the high stretching region, and the manufacturing method of the sheet component is characterized in that, has follow steps:

The prescribed direction is conveyed into composite sheet as conveying direction, the composite sheet is configured to, in the regulation side Continuous elastomeric element is inserted in the prescribed direction continuous heat in the prescribed direction with elongation state upwards First serialgram of plasticity and in the prescribed direction between continuous thermoplastic second serialgram, also, the elasticity Component is at least fixed in region corresponding with the high stretching region using thermoplastic adhesive；

By being cut off at least one position on the conveying direction of region corresponding with the low stretching region The elastomeric element, to be arranged in the composite sheet along the conveying direction and form the high stretching region and described low Stretching region；

In the step of forming the high stretching region and the low stretching region, heating element is to cutting rotary body and anvil The rotary body of at least one party in seat rotary body heats, so that the insufficient bonding agent of the temperature of the rotary body is molten Point, the cutting rotary body and the anvil block rotary body are rotated in the opposite mode of mutual outer peripheral surface, also, described compound When piece is passed through between the cutting rotary body and the anvil block rotary body along the conveying direction, outside the cutting rotary body The cutter of circumferential surface and the anvil block rotary body clamp the composite sheet, thus the shape at the position of the composite sheet clamped At the pressure contact portion of first serialgram and second serialgram and the elastomeric element is cut off,

The rotary body heated by the heating element is the cutting rotary body and the anvil block rotary body both sides.

In addition, being related to a kind of manufacturing device of sheet component relevant to absorbent commodity, the sheet component has edge The high stretching region and low stretching region of prescribed direction arrangement, retractility ratio of the low stretching region in the prescribed direction The high stretching region is low, and the manufacturing device of the sheet component is characterized in that, comprising:

Conveying device, the prescribed direction is conveyed composite sheet as conveying direction by the conveying device, described compound Piece is configured to, and continuous elastomeric element is inserted in elongation state in institute in the prescribed direction in the prescribed direction State in prescribed direction continuous first serialgram and in the prescribed direction between continuous second serialgram, also, described Elastomeric element is at least fixed in region corresponding with the high stretching region using thermoplastic adhesive；And

Cutter device, the cutter device by region corresponding with the low stretching region on the conveying direction At least one position at the cutting elastomeric element, to be arranged in the composite sheet along the conveying direction and form institute State high stretching region and the low stretching region；

The cutter device has cutting rotary body, anvil block rotary body and heating element, the cutting rotary body and institute It states anvil block rotary body to rotate in the opposite mode of mutual outer peripheral surface, the heating element is to the cutting rotary body and described The rotary body of at least one party in anvil block rotary body heats, so that the insufficient bonding agent of the temperature of the rotary body is molten Point,

When the composite sheet passes through between the cutting rotary body and the anvil block rotary body along the conveying direction, The cutter and the anvil block rotary body of the outer peripheral surface of the cutting rotary body clamp the composite sheet, thus in the composite sheet The position clamped at form the pressure contact portion of first serialgram and second serialgram and cut off the elastomeric element,

About other features of the invention, it is apparent from according to the record of this specification and attached drawing.

The effect of invention

According to the present invention, the shape at this location while cutting off the elastomeric elements such as non-individual body of lastex in composite sheet When at the pressure contact portion of thermoplastic first serialgram and thermoplastic second serialgram, cutting for the elastomeric element can not only be inhibited Damage is cut, and the thermoplastic adhesive from composite sheet can be effectively prevent attached to cutting rotary body or anvil block rotary body ?.

Detailed description of the invention

Fig. 1 is the general of the generating process for indicating to have the sheet component 20s' of high stretching region AH' and low stretching region AL' Slightly top view.

Fig. 2 is the diagrammatic perspective of the disposable diaper 1 of 3 chips of an example of the absorbent commodity as present embodiment Figure.

Fig. 3 is the approximate vertical view of the diaper 1 of the unfolded state from skin side.

Fig. 4 is the approximate vertical view of the diaper 1 from non-skin side.

Fig. 5 A is that A-A cross-sectional view, Fig. 5 B in Fig. 3 are B-B cross-sectional views in Fig. 3.

Fig. 6 is the VI-VI cross-sectional view in Fig. 3.

Fig. 7 is the approximate vertical view of the veutro tape member 20a from non-skin side.

Fig. 8 is from non-skin side by the approximate vertical view of the veutro tape member 20a before lastex 27s cutting.

Fig. 9 A be the sheet component 20as before will being conveyed to the manufacturing device 30 of present embodiment approximate vertical view, Fig. 9 B is the diagrammatic top that the sheet component 20as of stretching region AH, AH and non-telescoping region AL are formed with by the manufacturing device 30 Figure.

Figure 10 A is that the outline side view of the manufacturing device 30, Figure 10 B are B-B direction views in Figure 10 A.

Figure 11 is the explanatory diagram for being set to the configuration status of cutter C, C ... of cutting cube 54 of cutting roller 51d, be by The figure that ground indicates is unfolded in the outer peripheral surface 51da of roller 51d in the plane.

Figure 12 is to indicate that the outline of the clearance G formed between the point of a knife of cutter C and the outer peripheral surface 51ua of anvil roller 51u is put Big side view.

Figure 13 A is that outline longitudinal section view, Figure 13 B for illustrating the cutting roller 51d and anvil roller 51u of heating mechanism are figures B-B cross-sectional view in 13A.

Figure 14 A is to indicate for hot-melt adhesive to be coated on the outline side view of the situation of the non-individual body 27s of lastex, figure 14B is the B-B direction view in Figure 14 A.

Figure 15 is the outline side view for indicating for sheet component 20as to be wound in the situation of cutting roller 51d.

Figure 16 A and Figure 16 B are in region AL1 corresponding with non-telescoping region AL by the non-individual body 27s of each lastex points Not in the explanatory diagram of the example of the place multiple position PC, PC ... the cutting of direction of rotation Dc51d.

Specific embodiment

According to the record of this specification and attached drawing, item at least below is apparent from.

A kind of manufacturing method of sheet component relevant to absorbent commodity, the sheet component has to be arranged along prescribed direction The high stretching region and low stretching region of column, retractility of the low stretching region in the prescribed direction are high more flexible than described Region is low, and the manufacturing method of the sheet component is characterized in that, has follow steps: using the prescribed direction as conveying side Always composite sheet is conveyed, the composite sheet is configured to, and continuous elastomeric element is in the prescribed direction in the prescribed direction On continuous thermoplastic first serialgram is inserted in the prescribed direction with elongation state and in the prescribed direction Between upper continuous thermoplastic second serialgram, also, the elastomeric element is at least corresponding with the high stretching region Region is fixed using thermoplastic adhesive；By in region corresponding with the low stretching region on the conveying direction The elastomeric element is cut off at least one position, thus described in arranging and being formed along the conveying direction in the composite sheet High stretching region and the low stretching region；In the step of forming the high stretching region and the low stretching region, heating Component heats the rotary body of at least one party in cutting rotary body and anvil block rotary body, so that the temperature of the rotary body The fusing point of the insufficient bonding agent, the cutting rotary body and the anvil block rotary body are revolved in the opposite mode of mutual outer peripheral surface Turn, also, when the composite sheet passes through between the cutting rotary body and the anvil block rotary body along the conveying direction, The cutter and the anvil block rotary body of the outer peripheral surface of the cutting rotary body clamp the composite sheet, thus in the composite sheet The position clamped at form the pressure contact portion of first serialgram and second serialgram and cut off the elastomeric element.

According to the manufacturing method of such sheet component relevant to absorbent commodity, heating element to cutting rotary body and The rotary body of at least one party in anvil block rotary body heats, so that the insufficient above-mentioned bonding agent of the temperature of the rotary body is molten Point.Therefore, the softening of the thermoplastic first and second serialgram can be promoted based on the heating, and make power when clamping I.e. clamping force is easy to act on the non-individual body of lastex, and thereby, it is possible to inhibit the cutting damage of elastomeric element.

In addition, it is limited in the above-mentioned rotary body of the temperature of insufficient fusing point according to heating as described above, it can also be generally Prevent the heat input due to the contact by rotary body with composite sheet from the hot-melt adhesive in composite sheet being caused to melt.Cause This, also can be effectively prevented above-mentioned bonding agent and adhere to from composite sheet to the rotary body.

In the manufacturing method of sheet component relevant to the absorbent commodity, preferably by the adhesive applicating in institute State elastomeric element.

According to the manufacturing method of such sheet component relevant to absorbent commodity, by above-mentioned adhesive applicating in elasticity Component.Therefore, compared with the case where being coated on first and the second serialgram, elastomeric element can be carried out with fewer amount It is fixed.Fixing for elastomeric element is helpless to and the amount of the bonding agent that remains on composite sheet i.e., it is possible to be greatly decreased.Moreover, it is tied Fruit is the hardening that can inhibit the composite sheet that may be generated in the case that coating amount is excessive, it is easy to ensure that the composite sheet is soft It is soft.

In the manufacturing method of sheet component relevant to the absorbent commodity, preferably heated by the heating element The rotary body is the cutting rotary body.

According to the manufacturing method of such sheet component relevant to absorbent commodity, the also transmitting rapidly of the heat of above-mentioned heating To cutter, therefore, which can be effectively facilitated the soft of the first and second serialgram at the position abutted with cutter Change.Thus, it is possible to make above-mentioned clamping force be easy to act on elastomeric element at this location, as a result, it is possible to improve elastic portion The cuttability of part.In addition, due to the temperature of cutter also insufficient fusing point, the melting of above-mentioned bonding agent can be inhibited, by This, by preventing bonding agent from adhering to cutter, so as to which the cuttability of cutter is maintained good state for a long time.

In the manufacturing method of sheet component relevant to the absorbent commodity, preferably, heated by the heating element The rotary body around along the direction CD intersected with the conveying direction rotary shaft rotation, the heating element is with defined Heating mode heats the rotary body, so that the temperature difference of the rotary body on the direction CD becomes smaller.

According to the manufacturing method of such sheet component relevant to absorbent commodity, above-mentioned rotary body is in the cd direction The temperature difference becomes smaller.Therefore, the deviation of the gap size between cutter and anvil block rotary body can be reduced in the cd direction, as a result, The formation accuracy of pressure contact portion can be improved.

In the manufacturing method of sheet component relevant to the absorbent commodity, preferably, the heating mode is by institute Heat (W/m) regulation for stating per unit length investment per second on the direction CD, is based on the heating mode, exists compared to the rotary body More heats (W/m) are put into the rotary body described by the central portion on the direction CD, the heating element End on the direction CD.

According to the manufacturing method of such sheet component relevant to absorbent commodity, on the direction temperature ratio CD of end Central portion temperature it is low in the case where, can reduce the temperature difference of above-mentioned rotary body in the cd direction.

In the manufacturing method of sheet component relevant to the absorbent commodity, preferably, the cutter are via cutting The outer peripheral surface of the cutting rotary body is arranged in block, and the region locating for the cutting cube is provided on the direction CD The temperature sensor of thermometric is carried out to the cutting rotary body, the thermometric value based on the temperature sensor revolves the cutting The heating amount of swivel is adjusted.

According to the manufacturing method of such sheet component relevant to absorbent commodity, to the temperature close to the position of cutter Degree carries out thermometric, and is adjusted based on heating amount of the thermometric value to cutting rotary body.Therefore, it can more efficiently prevent from Bonding agent is stated to adhere to cutter.

In the manufacturing method of sheet component relevant to the absorbent commodity, preferably, heated by the heating element The rotary body be the cutting rotary body and the anvil block rotary body both sides.

According to the manufacturing method of such sheet component relevant to absorbent commodity, effectively prevent above-mentioned bonding agent to While cutting rotary body and anvil block rotary body both sides attachment, the cuttability of elastomeric element can also be improved based on the heating.

In the manufacturing method of sheet component relevant to the absorbent commodity, preferably by the composite sheet wound on quilt On the rotary body of the heating element heating.

According to the manufacturing method of such sheet component relevant to absorbent commodity, pass through the volume to above-mentioned rotary body Around, so as to seek composite sheet transport status stabilisation, as a result, can more effectively inhibit cutting for elastomeric element Cut damage.By the way, in this case, the fusing point of insufficient above-mentioned bonding agent is also maintained to the heating of the rotary body Temperature is based on this, and above-mentioned bonding agent also can be effectively prevented and adhere to the rotary body.

In the manufacturing method of sheet component relevant to the absorbent commodity, the preferably described composite sheet has lubrication Agent.

According to the manufacturing method of such sheet component relevant to absorbent commodity, since composite sheet has lubricant, Therefore, when being clamped with cutter, the lubricant can play rapidly lubricating action.The cutter are crimped without cutting off as a result, Relevant to composite sheet first and second serialgram, and easily choosing property cut off elastomeric element.

In addition, a kind of manufacturing device of sheet component relevant to absorbent commodity, the sheet component has along regulation The high stretching region and low stretching region of direction arrangement, the low stretching region is described in the retractility ratio in the prescribed direction High stretching region is low, and the manufacturing device of the sheet component is characterized in that, comprising: conveying device, the conveying device is by institute Prescribed direction is stated as conveying direction to convey composite sheet, the composite sheet is configured to, the continuous bullet in the prescribed direction Property component in the prescribed direction with elongation state be inserted in the prescribed direction continuous first serialgram and In the prescribed direction between continuous second serialgram, also, the elastomeric element at least with the high stretching region pair The region answered is fixed using thermoplastic adhesive；And cutter device, the cutter device by with the low breathing zone The elastomeric element is cut off at least one position of the corresponding region in domain on the conveying direction, thus in the composite sheet On along the conveying direction arrange and form the high stretching region and the low stretching region；The cutter device has cutting Rotary body, anvil block rotary body and heating element, the cutting rotary body and the anvil block rotary body are with mutual outer peripheral surface phase To mode rotate, the heating element to it is described cutting rotary body and the anvil block rotary body at least one party rotation Body is heated, so that the fusing point of the insufficient bonding agent of the temperature of the rotary body, in the composite sheet along the conveying Direction pass through between the cutting rotary body and the anvil block rotary body when, it is described cutting rotary body outer peripheral surface cutter with The anvil block rotary body clamps the composite sheet, so that it is continuous to form described first at the position of the composite sheet clamped The pressure contact portion of piece and second serialgram simultaneously cuts off the elastomeric element.

According to the manufacturing device of such sheet component relevant to absorbent commodity, can play and above-mentioned manufacturing method The case where identical function and effect.

===present embodiment===

The manufacturing method of the sheet component 20as relevant to absorbent commodity of present embodiment and manufacturing device 30 Such as used on the production line of the disposable diaper 1 of an example as absorbent commodity.Fig. 2 is as the disposable diaper 1 The approximate stereogram of the disposable diaper 1 of 3 chips of an example.In addition, Fig. 3 is the diaper 1 of the unfolded state from skin side Approximate vertical view, Fig. 4 are the approximate vertical views of the diaper 1 from non-skin side.Also, Fig. 5 A is the A-A section view in Fig. 3 Figure, Fig. 5 B are that B-B cross-sectional view, Fig. 6 in Fig. 3 is VI-VI cross-sectional view in Fig. 3.

As shown in Fig. 3, Fig. 5 A and Fig. 6, which has longitudinally, laterally and thickness direction is as mutually orthogonal Three directions.In addition, since the diaper 1 is so-called 3 chip, there is the hip crotch for being attached to wearer as the first component Portion absorbs the absorbent main bodies 10 of the excretas such as urine, has as second component the waist that the wearer is covered from veutro Veutro tape member 20a has the back side tape member 20b for the waist that the wearer is covered from back side as third member.

Moreover, under the unfolded state of Fig. 3, veutro tape member 20a and back side tape member 20b between each other across In the state that ground is arranged in parallel, absorbent main body 10 is erected between veutro tape member 20a and back side tape member 20b, also, Each end 10ea, 10eb of the length direction of the absorbent main body 10 engage respectively and are fixed on nearest tape member 20a, 20b, Its face shaping is in generally H shape when looking down.In addition, the state rise by the length direction of absorbent main body 10 substantially in Centre portion CL10 as folding position by 1 doubling of diaper, also, in the state of the doubling by opposite each other tape member 20a, 20b is melted in part 20ae, the 20be (that is, lateral each end 20ae, 20be) that should be abutted with the flank of wearer each other When applying grade and linking, these tape members 20a, 20b are annularly connected each other, and the formation become as a result, as shown in Figure 2 has waistline The diaper 1 of the pants type of opening 1HB and a pair of leg circumference opening 1HL, 1HL.

Absorbent main body 10 includes absorbent core 11；The core 11 is covered from skin side and constitutes the skin of absorbent main body 10 The surface patch 13 of the liquid permeability of skin side surface；And the core 11 is covered from non-skin side and constitutes the non-skin of absorbent main body 10 The back sheet 15 of the opaque liquid of side surface.Absorbent core 11 be will as an example of liquidabsorbing fibres paper pulp fiber and The absorbent core of general hourglass shape isotactic setting shape when the liquid-absorbents raw material such as superabsorbent polymer is shaped to overlook.Separately Outside, in this example embodiment, which is covered by the emulsion sheet 12 of liquid permeability, moreover, back sheet 15 become have non-woven fabrics 15nw and The two-layer structure of resin film 15f, but it is not limited to above structure.

In addition, absorbent main body 10 can also be for the purpose for preventing transverse leakage and in cross as shown in Fig. 3 and Fig. 5 B To each end there is three-dimensional rivel LSG, LSG as leakproof wall portion, moreover, passing through the both lateral sides in absorbent main body 10 Part be respectively configured the elastomeric elements 17r such as lastex, as shown in Fig. 2, can also be in diaper 1 and leg-openings 1HL, 1HL Comparable part forms calf circumference rivel LG, the LG that can be stretched.

On the other hand, as shown in Figure 3 and 4, veutro tape member 20a and back side tape member 20b is in transverse direction respectively When long vertical view it is the sheet component of rectangular shape, as shown in Fig. 5 A and Fig. 6, has and be stacked in a thickness direction Outer-skin sheet 21 and inner layer piece 22.In addition, inner layer piece 22 is located at the skin side of thickness direction compared to outer-skin sheet 21.In addition, no matter which One piece 21,22 is all formed by thermoplastic of the softness such as non-woven fabrics, in this example embodiment, uses spun bond nonwoven fabric.But It is not limited to above-mentioned example, be also possible to the non-woven fabrics of other type, and be also possible to resin film or woven fabric etc..In addition, In this example embodiment, the single fiber of polypropylene (PP) is used as the structural fibers of non-woven fabrics, but is not limited to above-mentioned example, Also the single fiber of other thermoplastic resins such as polyethylene (PE) can be used, and the core sheath of PE and PP can be used The composite fibre of structure etc..

Moreover, the longitudinal direction of lateral middle section 20ac, 20bc and absorbent main body 10 of each tape member 20a, 20b is each The non-skin side surface of end 10ea, 10eb are overlapped and are engaged.

By the way, in this example embodiment, as shown in Fig. 3 and Fig. 6, the planar dimension of outer-skin sheet 21 is from inner layer piece 22 To the prominent such size in longitudinal outside, the part 21p outstanding of outer-skin sheet 21 turned back to the inside of longitudinal direction and in covering Longitudinal end 22e of synusia 22, but it is not limited to above-mentioned example.

In addition, the tape member 20a, 20b are endowed lateral retractility, so as to when dressing diaper 1 tape member 20a, 20b can firmly hold the waist of wearer.But it is produced at the position of the absorbent core 11 of absorbent main body 10 from inhibition From the viewpoint of giving birth to fold and preventing its absorbency and anti-leakage from reducing, as shown in figure 4, in tape member 20a, 20b especially It is region 20ac, the 20bc Chong Die with the absorbent core 11 of absorbent main body 10, is formed with almost without the non-telescoping of retractility Region AL.

Hereinafter, be explained, here, the basic structure of veutro tape member 20a and back side tape member 20b phase each other Together.Therefore, in the following description, only veutro tape member 20a is illustrated, omits the explanation of back side tape member 20b.Separately Outside, for ease of description, hereinafter, as shown in the approximate vertical view of Fig. 7, veutro tape member 20a is divided into two in the longitudinal direction AU, AD are illustrated in region.That is, the region AU for being located at the waistline opening side 1HB in the longitudinal direction is known as " upper area AU ", by position Region AD in the side leg-openings 1HB is known as " lower area AD ".

As shown in fig. 7, the absorbent core 11 and upper area AU of absorbent main body 10 are underlapped.Therefore, in region AU, Retractility is endowed throughout lateral overall length.In addition, the imparting of retractility is by being arranged in the vertical direction horizontally with elongate A plurality of lastex 25,25 ... that state transversely configures simultaneously is fixed in region AU and realizes, in addition, lastex 25 to this The fixation of region AU is for example fixed using the hot-melt adhesive for being applied to lastex 25 or region AU.By the way one Under, as the fiber number of lastex 25, for example, may be exemplified 400dtex~1000dtex, in addition, as the specific of lastex 25 Example, may be exemplified LYCRA (trade mark) etc..In addition, above situation is for being set to the elastic of the lower area AD illustrated hereafter Line 27 is same.

On the other hand, the lateral middle section ADc of the absorbent core 11 with lower area AD of absorbent main body 10 is Chong Die, Therefore, it is formed in middle section ADc and (is equivalent to low breathing zone almost without the non-telescoping region AL of lateral retractility Domain), moreover, absorbent core 11 and each end side region ADe, ADe of the two sides positioned at middle section ADc be not substantially be overlapped, because This, in the end side region, ADe, Ade are formed with stretching region AH, AH with the retractility than non-telescoping region AL high (quite In high stretching region).

Here, stretching region AH, AH of the non-telescoping region AL of middle section ADc and each end side region ADe, ADe are such as Under the formation.Firstly, as shown in figure 8, horizontally with elongation state along the lateral edge a plurality of lastex 27s, 27s ... Longitudinal arrangement and configure between outer-skin sheet 21 and inner layer piece 22.In addition, each lastex 27s in the Ade of end side region with stretch The corresponding region AH1 of contracting region AH, is substantially fixed using hot-melt adhesive, in middle section ADc with non-telescoping region The corresponding region AL1 of AL is not fixed substantially.Therefore, it in region AL1 corresponding with non-telescoping region AL, is cut using aftermentioned It cuts device 50 and clamps tape member 20a from the two sides of thickness direction, as a result, when each lastex 27s, 27s ... are cut off, such as scheme Shown in 7, the lastex 27,27 ... that has been cut off is shunk to lateral end side, in the Ade of end side region with stretching region AH Corresponding region AH1 is substantially stopped and the region AL1 corresponding with non-telescoping region AL in middle section ADc does not stop substantially It stays, forms non-telescoping region AL in middle section ADc as a result, also, form stretching region AH in end side region ADe.

By the way, in this example embodiment, when cutting off each lastex 27s, 27s ..., in veutro tape member 20a It is respectively formed with linear pressure contact portion j from each position PC1 that the two sides of thickness direction are clamped, it will be discussed later.

It is raw as an example of sheet component 20as in the manufacturing device 30 of the sheet component 20as of present embodiment The non-individual body 20as for being horizontally connected at multiple above-mentioned veutro tape member 20a and constituting.Fig. 9 A is for illustrating to the manufacture Device 30 will convey before sheet component 20as approximate vertical view.At the moment, sheet component 20as becomes following shape State: multiple veutro tape member 20a, 20a ... in the state that each lastex 25s, 27s are not cut off are horizontally connected.That is, should Sheet component 20as is in the state of following composite sheet 20as, in the composite sheet 20as, the non-individual body of multiple lastexes The serialgram 21s that non-individual body 27s, 27s ... of 25s, 25s ... and multiple lastexes are plugged in outer-skin sheet (is equivalent to the One serialgram) and the serialgram 22s (being equivalent to the second serialgram) of inner layer piece between and two serialgram 21s, 22s engaged. In addition, non-individual body 27s, 27s ... of non-individual body 25s, 25s ... of multiple lastexes and multiple lastexes are respectively in sheet The state extended on the continuous direction of component 20as (being equivalent to composite sheet) along while the continuous direction in sheet component It arranges and configures in the width direction of 20as.Moreover, the region of a side side of the width direction of sheet component 20as is equivalent to abdomen The upper area AU of side tape member 20a, the region of another party side are equivalent to the lower area AD of veutro tape member 20a.Therefore, exist The region AU of the former a side side, in order to form stretching region throughout the overall length in continuous direction, corresponding multiple lastexes Non-individual body 25s, 25s ... throughout continuous direction overall length and be fixed on involved in sheet component 20as using hot-melt adhesive Each serialgram 21s, 22s.On the other hand, exist in the region AD of another party side of the latter, stretching region AH and non-telescoping region AL It arranges and is formed on continuous direction, therefore, non-individual body 27s, 27s ... of corresponding multiple lastexes are utilized on continuous direction Hot-melt adhesive is fixed on each serialgram 21s, 22s involved in sheet component 20as by phased manner.That is, in each continuous of Fig. 9 A The region AH1 corresponding with stretching region AH of piece 21s, 22s, non-individual body 27s, 27s ... of lastex utilize hot-melt adhesive It is fixed, but is not fixed in region AL1 corresponding with non-telescoping region AL.In addition, at this point, as shown in Fig. 9 A, in each company On continuous piece 21s, 22s, and the corresponding region AH1 and region AL1 corresponding with non-telescoping region AL of stretching region AH is with 2 to 1 Ratio arranges on continuous direction and is shown, this is because in non-telescoping region on the veutro tape member 20a of the single sheet of Fig. 7 The lateral two sides of AL are respectively present stretching region AH, AH.But here, due to do not need yet in figure 9 a with mutual neighbour Two stretching regions AH, AH connect corresponding each region AH1, AH1 are distinguished and are illustrated, therefore, hereinafter, by the two regions AH1, AH1 are illustrated included together as a region AH2.Moreover, in this case, as shown in Fig. 9 A, in tabs On part 20as, and the corresponding region AH2 and region AL1 corresponding with non-telescoping region AL of stretching region AH, AH is in continuous direction On alternately show.In addition, region AL1 corresponding with non-telescoping region AL is aobvious with the product spacing of diaper 1 on continuous direction On present sheet component 20as.Therefore, in the manufacturing device 30, with the product spacing of diaper 1 by piece on continuous direction Non-individual body 27s, 27s ... of each lastex of shape component 20as are cut off, as a result, as shown in Figure 9 B, on sheet component 20as Stretching region AH, AH and non-telescoping region AL are alternately formed on continuous direction.In addition, generating the figure and handling above The non-individual body 20as of such veutro tape member 20a, 20a ... shown in 9B.

In addition, in the following description, the continuous direction of sheet component 20as is also referred to as " direction MD ", by sheet component The width direction of 20as is also referred to as " direction CD ".By the way, the thickness direction of sheet component 20as, above-mentioned continuous direction are The direction MD and this three of above-mentioned width direction, that is, direction CD are in mutually orthogonal relationship.

Figure 10 A is that the outline side view of manufacturing device 30, Figure 10 B are B-B direction views in Figure 10 A.

As shown in Figure 10 A, manufacturing device 30 has conveying device 40 and cutter device 50, and the conveying device 40 is by the direction MD The above-mentioned sheet component 20as of non-individual body 27s, 27s ... with lastex, the cutter device are conveyed as conveying direction 50 cut off non-individual body 27s, 27s ... (being equivalent to elastomeric element) of the above-mentioned lastex of above-mentioned sheet component 20as.

Conveying device 40 has for example multiple conveying roller 40R, 40R ....Moreover, in multiple conveying roller 40R, 40R ... At least one be around along the direction CD rotary shaft rotation driving driven roller, in addition, the conveying roller 40R other than driven roller is Such as rotary force is obtained from sheet component 20as and follows the driven voller rotated.In addition, also to can replace this defeated for conveying device 40 It send roller 40R and there is lace conveying device, or also there is lace conveying device in addition to roller 40R.

There is cutter device 50 metal rolls 51u, 51d and shell 55, the roller 51u, the 51d such as upper and lower a pair of of steel to make each other Outer peripheral surface 51ua, 51da it is opposite and around the rotary shaft rotation along the direction CD, the shell 55 for bear cut off it is elastic The reaction force of the cutting of the roller 51u, 51d is acted on when non-individual body 27s, 27s ... of line.

Upper and lower a pair of rolls 51u, 51d is supported by parts of bearings 52u, 52d for being set to shell 55 respectively, thereby, it is possible to around The rotary shaft parallel with the direction CD is rotated.In addition, the parts of bearings 52d of lower roll 51d is fixed on shell 55 immovablely, The parts of bearings 52u of upper roller 51u by the actuator 53 appropriate such as the hydraulic cylinder or pneumatic cylinder for being fixed on shell 55, can with It is gone up and down in lower roll 51d contact or isolated direction, that is, up and down direction.Moreover, can be adjusted by controlling the actuator 53 Save the power of the size at the interval between outer peripheral surface 51ua, 51da of a pair of rolls 51u, 51d and contact or detaching direction up and down That is the size of crimp force (N).

In addition, each roller 51u, 51d are rotated by the servo motor (not shown) driving as driving source around above-mentioned rotary shaft. That is, carrying out rotation driving as direction of rotation Dc51u, Dc51d for the direction of the rotating shaft direct cross.Therefore, it is fed to Sheet component 20as between outer peripheral surface 51ua, 51da of upper and lower a pair of rolls 51u, 51d, in the outer peripheral surface 51ua, 51da Each other by being sent to the downstream in the direction MD.

Here, in this example embodiment, lower roll 51d is cutting roller (being equivalent to cutting rotary body), upper roller 51u is that anvil roller is (suitable In anvil block rotary body).That is, on the outer peripheral surface 51da of lower roll 51d, on the Dc51d of direction of rotation between the product of diaper 1 Corresponding angle is provided at least one cutting cube 54.Specifically, in this example embodiment, as shown in hacures in Figure 10 A, Two metal cutting cubes 54,54 are arranged on the Dc51d of direction of rotation across 180 ° of angle.In addition, in each cutting cube It is prominent on 54 to be formed with multiple cutter C, C ..., also, anvil roller, that is, upper roller 51u outer peripheral surface 51ua is even surface to accept Above-mentioned cutter C, C ....In addition, these rollers 51u, 51d be controlled as based on synchronization signal etc. it is defeated with sheet component 20as Movement is sent linkedly to rotate, cutting roller 51d is as a result, with the cutting when region AL1 corresponding with non-telescoping region AL passes through every time The mode opposite with region AL1 of block 54 is rotated.

Therefore, pass through the outer of above-mentioned a pair of rolls 51u, 51d every time in region AL1 corresponding with the non-telescoping region AL of Fig. 9 A When between circumferential surface 51ua, 51da, region AL1 is by cutter C, C ... and anvil roller of the cutting cube 54 of cutting roller 51d 51u is clamped.Moreover, non-individual body 27s, 27s ... of each lastex are cut off respectively at each position PC1 clamped, as a result, As shown in Figure 9 B, the lastex 27 being cut off is shunk to region AH1 corresponding with high stretching region AH, as a result, in piece Non-telescoping region AL and stretching region AH is formed on shape component 20as.

As shown in figure 11, on cutting cube 54, as multiple cutter C, C ..., shape is straight line when the vertical view of point of a knife Cutter C, C ... of shape are made of metals such as superhard alloys.Moreover, the length LC of the point of a knife in the direction of extension for example from It is selected in the range of 4mm~30mm, the size WC on the tread direction orthogonal with extending direction is for example from the model of 0.1mm~1mm Enclose middle selection.But the shape of point of a knife is not limited to as described above linearly, such as is also possible to the broken line of zigzag fashion Shape is also possible to the curve-likes such as circular arc threadiness.Each cutter C, C ... for lastex non-individual body 27s, 27s ... it is every One is accordingly each provided with one.Therefore, each lastex can be assuredly shut off at a position PC in the MD direction Non-individual body 27s, 27s ....

By the way, in the example of the Figure 11, make the direction of cutter C, C from the direction CD with appropriate other than 90 ° The inclined angle alpha of size tilts, also, is directed to all cutter C, C ..., not only makes the size of the inclined angle alpha, but also make it Inclined direction is all consistent.Specifically, in this example embodiment, make 30 ° of size of inclined angle alpha, also, about inclined direction, It is configured to being promoted to the downstream side of direction of rotation Dc51d, each point of a knife of all cutter C, C ... are mutually to the side CD To same side be displaced.But it is not limited to above-mentioned example.That is, the size of inclined angle alpha is not limited to above-mentioned 30 °, moreover, the inclination The size of angle α can also be inconsistent for all cutter C, C ..., also, inclined direction can also be cut for all Cutter C, C ... are inconsistent.

In addition, as shown in Figure 10 B, which is respectively provided with side ring in each end in the direction CD of cutting roller 51d 51SR,51SR.Each side ring 51SR, 51SR are the complete cycle that direction of rotation Dc51d is spread from the outer peripheral surface 51da of cutting roller 51d respectively And circular protrusion outstanding annular in shape.Moreover, the outer peripheral surface of outer peripheral surface 51Sra and anvil roller 51u in side ring 51SR In the state that 51ua is abutted, as shown in the outline enlarged side view of Figure 12, become cutter C point of a knife and anvil roller 51u it is outer The state of clearance G is formed between circumferential surface 51ua.Specifically, the size of the clearance G is for example set as 1 μm~20 μm, preferably It is set as 5 μm~15 μm, is set as 10 μm in this embodiment.

Moreover, if constituting as described above, when sheet component 20as passes through cutter device 50, the cutting of cutting roller 51d The outer peripheral surface 51ua of knife C and anvil roller 51u clamps sheet component 20as with the state each other with clearance G, so, when It, can be at this when non-individual body 27s, 27s ... of lastex are cut off at the position PC1 clamped in sheet component 20as The pressure contact portion j of the serialgram 21s of outer-skin sheet and the serialgram 22s of inner layer piece are quickly formed at the PC1 of position.That is, by cutter C When cutting off the non-individual body 27s of lastex, serialgram 21s and serialgram 22s can enter the clearance G, thus, it is possible in the gap For example in 10 μm of thickness of the pressure contact portion j for substantially forming two panels 21s, 22s in a thin film in G.Moreover, as a result, it is possible to having Avoid following situation to effect: with the cutting of the non-individual body 27s of the lastex, two serialgrams at the position PC1 clamped 21s, 22s are partly cut off and run through in a thickness direction, as a result, it is possible to inhibit the sheet component 20as ultimately generated That is the damage of the non-individual body 20as of veutro tape member 20a.

In addition, the actuators such as hydraulic cylinder above-mentioned 53 apply the pressure of up and down direction for cutting roller 51d and anvil roller 51u both sides Relay, to realize the state that side ring 51SR, 51SR and anvil roller 51u are abutted, according to the state of the abutting, by cutter C and When anvil roller 51u clamps sheet component 20as, the size of above-mentioned clearance G can also be maintained into approximately constant value.In addition, at this point, About various other gaps of above-mentioned clearance G, the parts of bearings of such as cutting roller 51d and anvil roller 51u may be influenced The gap (gap etc. between outer ring (not shown) or inner ring and rolling element) that 52d, 52u have in inside is based on actuator 53 Above-mentioned crimp force, as it is so-called it is " anti-loosening " also reduce.Moreover, such case can also be contributed effectively to above-mentioned The size of gap G maintains steady state value.

By the way, in this example embodiment, side ring 51SR is set to cutting roller 51d, but is not limited to above-mentioned example.That is, Also it can replace cutting roller 51d and be set to anvil roller 51u, or be also provided at anvil roller 51u in addition to being set to cutting roller 51d.

In addition, in the present embodiment, being provided with the heater for being heated to cutting roller 51d and anvil roller 51u Structure.Thus, it is possible to which the cutter C for improving cutting roller 51d is directed to the cuttability of the non-individual body 27s of lastex.That is, by cutting Roller 51d is heated, and the temperature of cutter C also increases, therefore, can be from this when clamping sheet component 20as using knife C The serialgram 21s of the outside synusia of the knife C and serialgram 22s of inner layer piece promptly inputs heat appropriate so that these pieces 21s, 22s softening.Push-in cutter C is easy in a thickness direction as a result, as a result, it is possible to which the clamping force of cutter C is made to be easy to make For the non-individual body 27s of lastex, so as to improve lastex non-individual body 27s cuttability.

But if excessive elevated temperature, the hot-melt adhesive in sheet component 20as can be generated and be attached to roller 51u, 51d The problem of.That is, as it was noted above, in order to fix the non-individual body 27s of lastex and using hot-melt adhesive, but because to the bonding agent Heat input and cause the bonding agent melt, bonding agent mobility with higher and be easy the thickness to sheet component 20as The outside in direction is oozed out, as a result, the bonding agent may adhere to and be piled up in cutting when contacting with sheet component 20as Outer peripheral surface 51da, outer peripheral surface 51ua of anvil roller 51u of knife C and cutting roller 51d etc..Moreover, continuing in the accumulation and making Attachment, which becomes, to be fallen etc. when being involved on sheet component 20as after big bulk, will lead on sheet component 20as The part for being involved in the attachment becomes rejected product.

Then, in the present embodiment, carry out the heating of each roller 51d, 51u in following range, i.e. cutter C and Each temperature of the outer peripheral surface 51ua of the anvil roller 51u accepted to it is respectively that insufficient hot-melt adhesive (it is viscous to be equivalent to thermoplasticity Connect agent) fusing point temperature.For example, in this example embodiment, rubber based hot melt bonding agent, fusing point are used as hot-melt adhesive It is 95 DEG C.Therefore, heating adjusting is carried out by temperature of the heating mechanism to each roller 51d, 51u, so that at the temperature of each roller 51d, 51u Range in 50 DEG C or more and less than 95 DEG C.By the way, 50 DEG C of the lower limit value for the range that above-mentioned temperature is adjusted are set For temperature for example higher than the ambient temperature (temperature of the atmosphere of surrounding) of roller 51d, 51u.In addition, according to the kind of hot-melt adhesive Class, it is also possible to there is a situation where that the nominal value of fusing point is not known, it in this case, can also be with passing through the ring based on JISK2351 The value for the softening point that ball measures replaces the value of its fusing point.

Figure 13 A and Figure 13 B are the explanatory diagrams of heating mechanism.Figure 13 A is that the outline of cutting roller 51d and anvil roller 51u is vertical Cross-sectional view, Figure 13 B are the B-B cross-sectional views in Figure 13 A.In addition, partial structurtes 71p is shown in Figure 13 A with splitting.

As shown in FIG. 13A, heating mechanism includes the hair for being individually inserted in the inside of cutting roller 51d and anvil roller 51u Hot body 71,71 (being equivalent to heating element), the temperature sensor 75 that the temperature of each roller 51d, 51u are measured, 75, Yi Jiji In the temperature control part that the temperature signal exported from temperature sensor 75,75 controls the calorific value of each heater 71,71 77。

Heater 71,71 and temperature sensor 75,75 correspond to each other ground for each roller 51d, 51u and are arranged.Moreover, warm While degree control unit 77 makes temperature sensor 75,75 and corresponding heater 71,71 respectively, the temperature based on temperature sensor 75 Signal controls the calorific value of corresponding heater 71.That is, the temperature signal of the temperature sensor 75 of cutting roller 51d is for cutting The temperature of heater 71 in roller 51d controls, and the temperature signal of the temperature sensor 75 of anvil roller 51u is for the hair in anvil roller 51u The temperature of hot body 71 controls.

In addition, whether cutting roller 51d is used or anvil roller 51u is used, the structure of heater 71 and temperature sensor 75 is all It is roughly the same.Therefore, hereinafter, being only illustrated the heater 71 of cutting roller 51d and temperature sensor 75 without explanation The heater 71 and temperature sensor 75 of anvil roller 51u.

Heater 71 is, for example, the electro-thermic heater to be generated heat based on the electric power being supplied to, is tool more specifically There is axial rodlike cartridge heater 71.Moreover, the heater 71 and roller 51d are coaxially inserted into the rotation with roller 51d Shaft is coaxially opened in the accepting hole 51dh of roller 51d, to spread the whole of direction of rotation Dc51d using the heater 71 Week and equably heat cutting roller 51d.Moreover, the heat generated by the heater 71 is in radiation along the direction of the rotating radius of roller 51d It transmits to shape, finally reaches cutter C via cutting cube 54.

In addition, the cartridge heater 71 is known features.Therefore, the following description is only limitted to understand the model that the present invention is required It encloses, without being described in detail.Firstly, the heater 71 includes the tubing 71p as shell and is accommodated in the pipe Material 71p and the line with heating function 71c wound with constant radius in coiled type using above-mentioned rotary shaft as winding center.Moreover, When each conducting wire 71L, the 71L connecting with the both ends of line with heating function 71c are connected to power supply via temperature control part 77 above-mentioned, the fever Line 71c is generated heat with calorific value (W) corresponding with supplying electric power from power supply (W).By the way, in this example embodiment, pass through The number of turns N (circle number/m) of the line with heating function 71c of the size supplied electric power and the per unit length on axial (direction CD) is changed, So as to change the per unit length in axial direction in calorific value (W/m) per second.

Moreover, according to this structure, the adjusting to above-mentioned temperature range carries out as follows.For example, coming from temperature sensor 75 Temperature signal indicated value lower than in the case where above-mentioned temperature range, temperature control part 77 is powered to heater 71, another party Face stops power supply in the case where the indicated value is more than above-mentioned temperature range.Thus, it is possible to by the roller 51d's at temperature measurement location Temperature is substantially converged in the temperature range i.e. 50 DEG C or more and less than 95 DEG C.By the way, temperature control part 77 is, for example, to count Calculation machine or PLC (programmable logic controllers) etc., that is, program appropriate is read simultaneously from memory by the processor being had by itself The program is executed, to carry out powered operation as described above.

As temperature sensor 75, such as use thermocouple.In addition, the temperature measurement location of thermocouple is the back side of cutting cube 54 Position.That is, being the position between cutting cube 54 and heater 71 for the position in direction of the rotating radius as shown in Figure 13 B It sets, is the specified position in region A54 locating for cutting cube 54 for the position on the direction CD as shown in FIG. 13A.Into one For step, in the example of Figure 13 A, be assumed to be above-mentioned zone A54 is divided into two in the cd direction in the case where, temperature The above-mentioned specified position of sensor 75 includes to be not contained in that there is no cutter C's in region A54E locating for cutter C In the A54N of region.

Therefore, which can carry out thermometric to the temperature close to the position of cutter C, moreover, utilizing the thermometric The heating amount of cutting roller 51d is adjusted in value, therefore, can be with precision appropriate and responsiveness appropriate is to the temperature of roller 51d Degree is adjusted.Thus, it is possible to temperature be substantially reliably converged in above-mentioned temperature range, as a result, it is possible to more effectively Ground prevents hot-melt adhesive from adhering to cutter C and cutting cube 54, the outer peripheral surface 51da of cutting roller 51d etc..But temperature sensing The temperature measurement location of device 75 is not limited to the position of the back side of foregoing illustrative cutting cube 54, in addition, the sensor 75 is also and unlimited In thermocouple.

By the way, the heating mechanism is also as making the temperature distribution homogenization of each roller 51d (51u) in the cd direction Evenly heating device plays a role, and is explained below.Firstly, on each roller 51d (51u) of Figure 13 A, due to thermal diffusivity According to the position on the direction CD without square one, Temperature Distribution in the cd direction is deposited, more specifically, is had on the direction CD Central portion 51dc (51uc) temperature than end 51de (51ue) temperature height as temperature difference Tce.Moreover, the temperature difference Δ Tce may bring adverse effect to the formation of stablizing of pressure contact portion j above-mentioned.For example, as it was noted above, in order to form crimping Portion j needs clearance G (Figure 12) between cutter C and the outer peripheral surface 51ua of anvil roller 51u, but with the temperature difference as described above When Δ Tce, end 51de (51ue) in the cd direction is even if be formed with appropriately sized clearance G, in central portion 51dc The size that (51dc) also results in clearance G is too small, it is thereby possible to will lead in a thickness direction through without forming pressure contact portion j. Therefore, make each roller 51d using above-mentioned heating mechanism for the purpose for the size constant for making the clearance G in the cd direction The temperature distribution homogenization of (51u) in the cd direction.

Hereinafter, the research for making the heating mechanism also function and carry out as evenly heating device is illustrated, The research is whether directed to cutting roller 51d or to be directed to anvil roller 51u all identical.Therefore, hereinafter, being carried out by taking cutting roller 51d as an example Explanation.

In the example of Figure 13 A, it is based on defined heating mode, heater 71 is changed according to the position on the direction CD Calorific value (W/m).That is, locating the calorific value (W/m) at the 51de of end than central portion 51dc for the heating mode Calorific value (W/m) greatly, as a result, compensates above-mentioned temperature difference Tce.In addition, the difference of the calorific value is by end 51de The number of turns N of above-mentioned line with heating function 71c (circle number/m) is set as with matching with temperature difference Tce between central portion 51dc Difference, so as to realize.That is, in this example embodiment, making the number of turns N (circle number/m) at the 51de of end than the number of turns at the place central portion 51dc N (circle number/m) greatly, increases the calorific value of end 51de compared to the calorific value at central portion 51dc as a result,.But make calorific value In end, method 51de different with central portion 51dc is not limited to this method, and method in addition to this also can be used.For example, It is different with central portion 51dc in end 51de by making the resistance of line with heating function 71c, so that calorific value can also be made different.

By the way, preferably, sheet component 20as has lubricant.Moreover, if constituting in this way, with cutter The lubricant can play rapidly lubricating action when C is clamped, and be crimped as a result, with cutter C without cutting off outer-skin sheet And inner layer piece each serialgram 21s, 22s and the non-individual body 27s of lastex can be cut off.In addition, as the lubricant An example may be exemplified surfactant or finish, more specifically, oleamide, erucyl amide, stearic amide can be used Deng alternatively, the vegetable and animals oils such as the silicone oil such as the modified silicon oil containing amino acid, olive oil, atoleine etc. can be used.But It is not limited to above-mentioned material.That is, as long as the friction system being coated at the position of prescribed material on sheet component 20as can be made Number is reduced compared to the coefficient of friction before coating, then the material can also play above-mentioned lubricating action.Therefore, which can also be with As above-mentioned lubricant.By the way, about the measurement of coefficient of friction, automatic surface ability meter can be used (KES-FB4-AUTO-A) or friction fremitus tester (KES-SE) (being all that Japan adds technology strain formula corporation) is implemented, separately Outside, as the method for making lubricant be contained in sheet component 20as, it may be exemplified the well-known coating method such as slot coating.

Additionally, it is preferred that being, the coating of hot-melt adhesive is not each serialgram 21s, 22s for outer-skin sheet and inner layer piece But it is applied for the non-individual body 27s of lastex.Moreover, if as described above constitute, with coated on each serialgram 21s, The case where 22s, is compared, and the fixation of the non-individual body 27s of lastex can be carried out with fewer amount.I.e., it is possible to be greatly decreased helpless In the amount for the bonding agent of the non-individual body 27s of lastex fixed and remain on sheet component 20as.Moreover, as a result, can The hardening for the sheet component 20as that may be generated in the case where to inhibit coating amount excessive, it is easy to ensure that sheet component 20as Flexibility.

By the way, about coating method, following methods be may be exemplified.Figure 14 A is the outline for indicating the situation of coating Side view, Figure 14 B are the B-B direction views in Figure 14 A.Firstly, for the non-individual body of the transported lastex on continuous direction 27s, from the spray-hole N of the hot-melt adhesive being positioned above by the bonding agent of substantially molten condition as shown in Figure 14B with Ω Shape or spiral helicine modes of application are continuously sprayed.Then, as shown in Figure 14 A, the bonding agent is from the non-individual body 27s's of lastex Top is wrapped in the outer peripheral surface of non-individual body 27s, rapidly around the lower section of the outer peripheral surface, as a result, the bonding agent is throughout pine The complete cycle of the outer peripheral surface of the non-individual body 27s of stringing is coated.

In addition, according to different situations, it, can also be by sheet component 20as with defined as shown in the outline side view of Figure 15 Winding angle α w is wound in the roller 51d (51u) for being heated mechanism heats.In the present embodiment, cutting roller 51d and anvil roller Which of 51u roller 51d, 51u are heated, and therefore, any one roller 51d (51u) can be wound in, in the example of the Figure 15 In, it is wound in cutting roller 51d.Moreover, the stabilization of the transport status of sheet component 20as can be sought if constituting as described above Change, thereby, it is possible to more effectively inhibit the cutting damage of the non-individual body 27s of lastex.Additionally, it is preferred that be, it will be elastic comparing The position PZ of the non-individual body 27s cutting of line is wound at the position of the upstream side of direction of rotation Dc51d, if structure as described above At, then cutting lastex non-individual body 27s before sheet component 20as can sufficiently be heated.As a result, being based on Such, clamping force described previously is easy to act on the mechanism of non-individual body 27s, can more effectively inhibit non-individual body 27s Cutting damage.

In addition, in this case, as winding angle α w, such as may be exemplified 10 °~60 °, preferably may be exemplified 20 ° ~40 °.By the way, the definition as winding angle α w, such as may be exemplified " between the first line segment and second line segment The angle α w of formation, first line segment are that the outer peripheral surface 51da (51ua) with roller 51d (51u) is started the position Pss contacted With the line segment of the rotation axis connection of roller 51d, the second line segment is the position Pse that will be initially moved off from roller 51d (51u) and the rotation The line segment of shaft connection ".

===other embodiments===

More than, embodiments of the present invention are illustrated, but above embodiment is for becoming understanding of the invention It must be easy, explain the present invention to being not intended to limit property.In addition, the present invention changes or changes in which can not depart from its purport It is good, also, the self-evident present invention also includes its equivalent structure.For example, being able to carry out such deformation as shown below.

In the above-described embodiment, rubber based hot melt bonding agent is illustrated as thermoplastic adhesive, fusing point is 95 DEG C. But as long as thermoplastic adhesive, however it is not limited to above-mentioned rubber based hot melt bonding agent.For example, as the bonding agent, The olefines hot-melt adhesive etc. that fusing point is 110 DEG C can be used.

In the above-described embodiment, both cutting roller 51d and anvil roller 51u are respectively provided with adds as the cartridge type of heating element Hot device 71, but it is not limited to this.For example, it is also possible to the roller tool either being configured in only cutting roller 51d and anvil roller 51u There is the cartridge heater 71 as heating element, can also correspondingly realize cutting for the non-individual body 27s of lastex in this case Cut the inhibiting effect of damage.

In the above-described embodiment, it is formed with the concentric rotation axis of each roller 51d (51u) and is added as the cartridge type of heating element The accepting hole 51dh (51uh) of hot device 71 a, moreover, cartridge heater 71 is inserted into accepting hole 51dh (51uh), but simultaneously It is without being limited thereto.For example, it is also possible to be configured to, around direction of rotation Dc51d (Dc51u) equal part and revolved by each roller 51d (51u) Turn to be respectively formed accepting hole 51dh (51uh) at a distance of the equidistant position of rotary shaft on radial direction, moreover, in each receiving Cartridge heater 71 is accommodated respectively in hole 51dh (51uh).

In the above-described embodiment, cartridge heater 71 is instantiated as an example of heating element, but as long as can add Each roller 51d (51u) of heat, however it is not limited to above-mentioned cartridge heater.For example, induction heating also can be used as heating element Device.In addition, induction heating apparatus is for example non-contiguously matched with the outer peripheral surface 51da (51ua) with each roller 51d (51u) in opposite directions The dynamic magnetic field generating unit set.Moreover, the dynamic magnetic field generating unit applies the dynamic magnetic field of high frequency to outer peripheral surface 51da (51ua), To generate electric current in the inside of each roller 51d (51u), roller 51d (51u) is heated as a result,.

In the above-described embodiment, in region AL1 corresponding with non-telescoping region AL in a portion of direction of rotation Dc51d Non-individual body 27s of the cutting as each lastex of elastomeric element, makes the company of lastex cut off at the position PC (Figure 11) of position Continuous body 27s is shunk to region AH1 corresponding with stretching region AH, to form non-telescoping region AL, but it is not limited to this.

For example, being also configured to as shown in Figure 16 A and Figure 16 B, in region AL1 corresponding with non-telescoping region AL The non-individual body 27s for cutting off each lastex at the place multiple position PC, PC ... of direction of rotation Dc51d respectively, thus in the region The non-individual body 27s of lastex is cut to fragment shape by AL1, makes the non-telescoping region AL of region AL1 as a result,.In addition, in the feelings Under condition, the non-individual body 27s of the lastex before cutting not only in region AH1 corresponding with stretching region AH, but also with it is non-telescoping AL corresponding region AL1 in region also can use hot-melt adhesive bonding and be fixed.

In the above-described embodiment, cutting roller 51d has side ring 51SR, but as long as can be in the cutter C of cutting roller 51d Clearance G above-mentioned (Figure 12) is formed between the outer peripheral surface 51ua of anvil roller 51u, can also not have side ring 51SR.For example, passing through Position control is carried out to the actuators such as hydraulic cylinder above-mentioned 53 shown in Figure 10 B and comes contact or isolated side to cutting roller 51d It is adjusted to the position of i.e. up and down direction, so that the size steady state value of above-mentioned clearance G can also be made.By the way, exist In this case, also can be used using servo motor as driving source as above-mentioned actuator 53 and be able to carry out position control Feed screw mechanism.

In the above-described embodiment, as shown in figure 11, the continuous of multiple lastexes is instantiated as multiple elastomeric elements Body 27s, 27s ..., moreover, each for non-individual body 27s, 27s ... of above-mentioned multiple lastexes, accordingly each setting One cutter C, C ..., but it is not limited to this.For example, it is also possible to for two or three as more than two an examples The non-individual body 27s of lastex is arranged in correspondence with a cutter C.That is, also can with across the non-individual body 27s of two lastexes, A cutter C is arranged in the mode of non-individual body 27s, 27s, 27s of 27s or three lastex.

In the above-described embodiment, sheet component 20as has the serialgram 21s of outer-skin sheet and the serialgram of inner layer piece 22s, but can also further be laminated with other serialgram.

In the above-described embodiment, the non-individual body 27s of lastex is instantiated as elastomeric element, but it is not limited to this. For example, it can be the band-like elastomeric elements such as the non-individual body of flat rubber.

In the above-described embodiment, cutting roller 51d is instantiated as cutting rotary body, is illustrated as anvil block rotary body Anvil roller 51u, but it is not limited to this.For example, as cutting rotary body and anvil block rotary body, it can also be respectively using annular Band.

In the above-described embodiment, the disposable diaper 1 of 3 chips is instantiated as an example of absorbent commodity, but simultaneously It is without being limited thereto.For example, it is also possible to be breaking at tabs used in the disposable diaper of 2 chips with cutter device 50 above-mentioned The non-individual body 27s for the lastex being arranged on part.By the way, the disposable diaper of 2 chips refers to following types of diaper: There is the outer load of two-layer structure as the first component, which has veutro portion, crotch and drosal part, as second Component and have be fixed in the outer load skin-side surface absorbent main body 10.Moreover, in this case, above-mentioned is outer The serialgram of load is equivalent to above-mentioned sheet component 20as, and non-individual body 27s, 27s ... of each lastex are plugged in exterior Between two layers that the serialgram of piece has.

In the above-described embodiment, the disposable diaper 1 of pants type is instantiated as an example of absorbent commodity, but simultaneously It is without being limited thereto.That is, being also possible to the disposable diaper of belt.In addition, the disposable diaper of belt refers to urinating following types of Cloth: there is the drosal part for covering the waist from the veutro portion of the waist of veutro covering wearer and from back side, use restraint zone Veutro portion and drosal part are linked.Furtherly, about absorbent commodity, it is also not limited to above-mentioned disposable diaper 1.That is, only If sheet component 20as as described above to be used as to the absorbent commodity of material, the manufacturing method of the present invention and system can be applied Make device 30.Therefore, the concept of the absorbent commodity also includes diaper and sanitary napkin.

Description of symbols

1 disposable diaper (absorbent commodity), 1HB waistline opening, 1HL leg-openings, 10 absorbent main bodies, the end 10ea Portion, the end 10eb, 11 absorbent cores, 12 emulsion sheets, 13 surface patch, 15 back sheets, 15f resin film, 15nw non-woven fabrics, 17r Elastomeric element, 20a veutro tape member, 20ac middle section, the end 20ae, 20as sheet component, 20b back side tape member, 20ae End, 21 outer-skin sheets, the part 21p, the serialgram (the first serialgram) of 21s outer-skin sheet, 22 inner layer pieces, the end 22e, 22s internal layer The serialgram of piece, 25 lastexes, the non-individual body of 25s lastex, 27 lastexes, 27s lastex non-individual body (elastomeric element), 27sd lastex, 30 manufacturing devices, 40 conveying devices, 40R conveying roller, 50 cutter devices, 51SR side ring, 51Sra outer peripheral surface, 51d cutting roller (cutting rotary body), 51da outer peripheral surface, 51dc central portion, the end 51de, 51dh accepting hole, 51u anvil roller (anvil block Rotary body), 51ua outer peripheral surface, 51uh accepting hole, 52d parts of bearings, 52u parts of bearings, 53 actuators, 54 cutting cubes, 55 shells Body, 71 cartridge heaters (heater), 71c line with heating function, 71p tubing, 75 temperature sensors, 77 temperature control parts, C cutter, j Linear pressure contact portion, the gap G, N spray-hole, AU upper area, AD lower area, ADc middle section, the end side Ade region, AH are flexible Region (high stretching region), the region AH1, the region AH2, the non-telescoping region AL (low stretching region), the region AL1, the position PC, PC1 Position, the position PZ, the position Pss, the position Pse, LSG solid rivel, LG calf circumference rivel, CL10 substantially central portion, the region A54, The region A54E, the region A54N.

Claims

1. a kind of manufacturing method of sheet component relevant to absorbent commodity, the sheet component has to be arranged along prescribed direction High stretching region and low stretching region, retractility of the low stretching region in the prescribed direction is than the high breathing zone Domain is low, and the manufacturing method of the sheet component has follow steps:

The prescribed direction is conveyed into composite sheet as conveying direction, the composite sheet is configured to, in the prescribed direction Continuous elastomeric element is inserted in the continuous thermoplasticity in the prescribed direction in the prescribed direction with elongation state The first serialgram and in the prescribed direction between continuous thermoplastic second serialgram, also, the elastomeric element At least it is fixed in region corresponding with the high stretching region using thermoplastic adhesive；

By described in the cutting at least one position on the conveying direction of region corresponding with the low stretching region Elastomeric element, to be arranged in the composite sheet along the conveying direction and form the high stretching region and flatness contracting Region；

In the step of forming the high stretching region and the low stretching region, heating element revolves cutting rotary body and anvil block The rotary body of at least one party in swivel heats, so that the fusing point of the insufficient bonding agent of the temperature of the rotary body, institute It states cutting rotary body and the anvil block rotary body is rotated in the opposite mode of mutual outer peripheral surface, also, on the composite sheet edge The conveying direction pass through between the cutting rotary body and the anvil block rotary body when, it is described cut rotary body outer peripheral surface Cutter and the anvil block rotary body clamp the composite sheet, to form institute at the position of the composite sheet clamped It states the pressure contact portion of the first serialgram and second serialgram and cuts off the elastomeric element,

The manufacturing method of the sheet component is characterized in that,

2. the manufacturing method of sheet component relevant to absorbent commodity as described in claim 1, which is characterized in that

By the adhesive applicating in the elastomeric element.

3. the manufacturing method of sheet component relevant to absorbent commodity as claimed in claim 1 or 2, which is characterized in that

The heating mode by the direction CD per unit length investment per second heat (W/m) provide,

Based on the heating mode, compared to central portion of the rotary body on the direction CD, the heating element will be more The heat (W/m) put into end of the rotary body on the direction CD.

4. the manufacturing method of sheet component relevant to absorbent commodity as claimed in claim 1 or 2, which is characterized in that

The outer peripheral surface of the cutting rotary body is arranged in via cutting cube for the cutter,

The region locating for the cutting cube is provided with the temperature that thermometric is carried out to the cutting rotary body on the direction CD Sensor,

The heating amount of the cutting rotary body is adjusted in thermometric value based on the temperature sensor.

5. the manufacturing method of sheet component relevant to absorbent commodity as claimed in claim 1 or 2, which is characterized in that

By the composite sheet on the rotary body heated by the heating element.

6. the manufacturing method of sheet component relevant to absorbent commodity as claimed in claim 1 or 2, which is characterized in that

The composite sheet has lubricant.

7. a kind of manufacturing device of sheet component relevant to absorbent commodity, the sheet component has to be arranged along prescribed direction High stretching region and low stretching region, retractility of the low stretching region in the prescribed direction is than the high breathing zone Domain is low, and the manufacturing device of the sheet component includes

The prescribed direction is conveyed composite sheet, the composite sheet structure as conveying direction by conveying device, the conveying device Become, continuous elastomeric element is inserted in elongation state in the rule in the prescribed direction in the prescribed direction Determine on direction continuous first serialgram and in the prescribed direction between continuous second serialgram, also, the elasticity Component is at least fixed in region corresponding with the high stretching region using thermoplastic adhesive；And

Cutter device, the cutter device by region corresponding with the low stretching region on the conveying direction extremely The cutting elastomeric element at a few position, to be arranged in the composite sheet along the conveying direction and form the height Stretching region and the low stretching region；

The cutter device has cutting rotary body, anvil block rotary body and heating element, the cutting rotary body and the anvil Seat rotary body is rotated in the opposite mode of mutual outer peripheral surface, and the heating element is to the cutting rotary body and the anvil block The rotary body of at least one party in rotary body heats, so that the fusing point of the insufficient bonding agent of the temperature of the rotary body,

It is described when the composite sheet passes through between the cutting rotary body and the anvil block rotary body along the conveying direction The cutter and the anvil block rotary body for cutting the outer peripheral surface of rotary body clamp the composite sheet, thus in the quilt of the composite sheet The pressure contact portion of first serialgram and second serialgram is formed at the position of cramping and cuts off the elastomeric element,

The manufacturing device of the sheet component is characterized in that,