CN1240636A

CN1240636A - Absorbent article having double side cuffs

Info

Publication number: CN1240636A
Application number: CN 99110114
Authority: CN
Inventors: S·波伊瑟; T·J·赫尔姆斯特特
Original assignee: McNeil PPC Inc
Current assignee: Johnson and Johnson Consumer Inc
Priority date: 1998-06-30
Filing date: 1999-06-30
Publication date: 2000-01-12

Abstract

An absorbent article having both outwardly extending and upwardly extending side cuffs is disclosed. The article has a perimeter defined at least in part by a pair of oppositely disposed ends and oppositely disposed sides that extend substantially between the ends. A pair of side flanges extends from a proximal portion adjacent an absorbent structure to a distal portion proximate one of the article sides. Each side flange has a base element, an outer zone disposed adjacent the perimeter and an inner zone disposed between the outer zone and the absorbent structure. There is an elastically extensible element having a width sufficient to span at least the inner zone and a portion of the outer zone, a thickness, and a length. Each elastically extensible element is laminated to the cover material to form a cuff laminate.

Description

Absorbent product with double side cuffs

The present invention relates to have the absorbent product of double side cuffs, specifically, relate to absorbent product with outward extending and upwardly extending side rib collar to reduce to sew.

Developing department is making great efforts to improve the liquid-keeping and comfortableness as diaper, incontinence protection and sanitary towel and so on absorbent product always.They solve the problem that side is sewed by setting up softish normally elastic extension leg cuffs, for example, disclosed in people's such as the U.S. Patent No. 4938754 of the U.S. Patent No. 4388075 of Mesek etc., Mesek and Menard the European patent 05 34 488.

Recently, product development department has set up upwardly extending " barrier layer rib collar " near the side of the absorbent structure of absorbent product.The example of this barrier layer rib collar sees in people's such as the U.S. Patent No. 4900317 of U.S. Patent No. 4695278, Buell of U.S. Patent No. 4695278, the Lawson of Enloe and LeMahieu the U.S. Patent No. 5620431.The common conduct of this barrier layer rib collar independently parts is set up, and must be attached on the absorbent product after handling.Such rib collar also comprises single or multiple elastic strips or band, and they apply contractility in discrete separation region.

For this reason, need the absorbent product of such novelty, its existing outward extending lateral flanges has upwardly extending barrier layer rib collar again, and it makes the user comfortable, simultaneously easily by successive industrial making method production.

Disclose to have at this and stretched out and the absorbent product of upwardly extending side rib collar.This absorbent product has at least partially by the end limit of pair of opposing and the determined periphery of the side that is oppositely arranged that roughly extends between this limit, opposite end.These goods have cover material, the adjacent perimeter of liquid thoroughly and are attached to the lyophoby barrier material on this cover material and are located at absorbent structure between this cover material and the barrier material.There is a pair of side flange to extend to the contiguous distal part of a side of goods therewith from the contiguous nearly portion of absorbent structure.Each side flange has end part, and the outskirt of the adjacent setting of above-mentioned periphery and the inner region that is provided with between this outskirt and absorbent structure.Be provided with possess width, the elastic telescopic spare of thickness and length, it is above-mentioned inner region and a part of outskirt at least that its width then is enough to cross over.Described each elastic telescopic spare connects with each side flange, and the length of this elastic telescopic spare is significantly greater than its width, and this width is significantly greater than its thickness.Each elastic telescopic spare is laminated to and forms the rib collar laminate on the aforementioned cover material.Each rib collar laminate is attached on the end part of side flange of described outskirt, but is not attached on the described intrinsic pressure bottom.At last, described cover material is that central area at these goods is attached on the absorbent structure at least.Like this, when described elastic telescopic spare is under the relaxed state, at least a portion that just can allow each rib collar laminate is from going out with the end part upper deflecting of contiguous each side flange of described inner region.The invention still further relates to the method that is used for forming this goods.

Fig. 1 is the perspective view of absorbent product of the present invention;

Fig. 2 is the side view of absorbent product among Fig. 1;

Fig. 3 is the cross-sectional figure along the intercepting of the 3-3 line among Fig. 1;

Fig. 4-6 shows the part figure of three different embodiment in the cross section of Fig. 3; With

Fig. 7 generally shows the method that forms absorbent product of the present invention.

Referring to Fig. 1-3, absorbent product 10 has at least partially by the end limit 12 of pair of opposing and is the periphery that the side that is oppositely arranged 14 that extends between this limit, opposite end 12 is determined basically.Goods 10 have towards the surface 16 of health with towards the surface 18 of wearing clothes.Goods 10 have liquid cover 20 and liquid-tight barrier layer 22.Cover 20 and barrier layer 22 are attached on the most contiguous periphery of goods 10.Be provided with absorbent structure 24 between cover 20 and the barrier layer 22.

Side flange 26 stretches out along each side 14 of goods 10.Each side flange 26 is from extending to distal part 30 with the adjacent nearly portion 28 of absorbent structure 24.Each side flange 26 have bottom parts 32, and the peripheral adjacent outskirt 34 of goods 10 and be located at outskirt 34 and absorbent structure 24 between inner region 36.

Elastic extension part 38 is connected in each side flange 26 effectively.Elastic extension part 38 is formed within the rib collar laminate 39 by cover 20, is at least and side 14 next-door neighbours.One first surface 40 of elastic extension part 38 preferably is laminated to and forms above-mentioned rib collar laminate 39 on the cover 20.Rib collar laminate 39 is attached on the end part 32 in the outskirt 34, but directly is not attached on the end part 32 of inner region 36.Preferably by one with above-mentioned first 40 second 42 relative expose portion that forms rib collar laminate 39.It is attached to the part on the end part 32 of outskirt 34.Like this, at least a portion of rib collar laminate 39 is gone out from end part 32 upper deflectings of each side flange 26 of adjacency inner region and is formed upwardly extending block piece rib collar 44.

Cover 20 is liquid-tight spares, can be used to comprise absorbent structure 24, allows the body transudate to enter absorbent structure 24, and the shield transudate provides the comfortable surface 16 towards body simultaneously at least partially.Cover 20 can be got any structure, as long as it has sufficient softness with absorbent product 10 bendings, and can allow the body transudate may to get final product by active parts by wherein comprising simultaneously any of absorbent structure 24 in fact.Representative but and more unrestriced useful structures comprise Woven fabric, supatex fabric, porose or perforated membrane, sponge plastics (comprising porose foam plastics), sintered plastics, or the like.Representative but and the more unrestriced material that forms this structure that is suitable for comprise: cellulosics, as cotton, artificial silk, wooden Time of Fluff Slurry, or the like; The hydrocarbon synthesis thing, as polyolefin, polyester, polyurethane, polyimides, polytetrafluoroethylene (PTFE), or the like; Organosilicon is as polysiloxanes or the like; Binding agent soaks agent, as surfactant; And other any materials of making the absorbent product parts that are suitable for.One or more of above-mentioned material can be included in and form cover 20 in the laminar structure.

Cover 20 is preferably formed by such lamellar flexible material, and the basic weight of this material is less than about 60 gram/rice ²(gsm), better basic weight is the best about 35gsm of the about 15-of basic weight of the about 60gsm of about 10-.

Barrier layer 22 is the liquid-tight parts preferably, and it is used for comprising absorbing structure 24, prevent that the body transudate from flowing out to the clothing of user from absorbent structure 24, perhaps are used to provide the comfortable surface 18 towards clothing.Barrier layer 22 desirable any structures are as long as it can stop the body transudate may to get final product by active parts by also comprising any of absorbent structure 24 equally in fact with absorbent product 10 bendings.Representative but more unrestriced useful structures comprise: fabric, as supatex fabric and Woven fabric; Film comprises the film of foraminous, porous or micropore, foam plastics foam plastics such as porous or micropore, closed pore, and sintered plastics, or the like.Can be used for forming the representative of this spline structure but more unrestriced materials comprise: cellulosics, as cotton, artificial silk, wooden Time of Fluff Slurry (comprising paper and coating or otherwise laminated paper) etc.; The hydrocarbon synthesis thing is as polyolefin, polyester, polyurethane, polyimides, polytetrafluoroethylene (PTFE) etc.; Organosilicon is as polysiloxanes etc.; Binding agent; Protective agent and other material processed agent, and other any materials that can be used as the absorbent product parts.In these materials one or more can be included in the laminar structure or form barrier layer 22.

Barrier layer 22 preferably by thickness in the lamellar flexible material less than the forming of about 2mm, preferably best film less than about 0.01-0.05mm forms this impedance layer less than about 0.1mm by thickness.

Absorbent structure 24 is to be used for the body fluid that obtains and keep oozing out.Absorbent structure 24 can be single basic structure uniformly, maybe can be complicated multilamellar or asymmetrical structure.In the embodiment that selects the superior, absorbent structure 24 comprises at least one intermediate layer 46 and at least one keeper 48.Intermediate layer 46 can be arranged and be constructed to be permeable to obtain, distributes, temporarily preserve and/or shield transudate and help to stablize whole absorbent structure 24, and keeper then generally is used for taking out from the intermediate layer this body transudate.In the embodiment that optimizes especially shown in Figure 3, be located at keeper 48 and cover first intermediate layer, 1 between 20 wideer than keeper 48, and extend at least in the inner region 36 of side flange 26, and this helps the stable keeper 48 of living.In another embodiment shown in Figure 4, absorbent structure 24 ' be monolayer.In another embodiment again shown in Figure 5, intermediate layer 46 " is located at keeper 48 " and barrier layer 22 " between and can be used as moisture absorption layer or stabilizing member.

Absorbent structure 24 and/or each layer (intermediate layer 46 and/or keeper 48) can be got any structure, as long as the abundant absorber transudate of energy, the effect of playing sanitary towel, incontinence article, diaper or similar products gets final product.Representative but more unrestriced useful structures comprise: Woven fabric, supatex fabric (comprise fibrous batt, chiffon, or the like), and porose or perforated membrane, porose foam plastics, sintered plastics, or the like.This structure also can comprise foam plastics, pellet, fiber, film, sheet of traditional hygroscopic material and high hygroscopic material such as superabsorbent or the like.Can be used for forming the representative of this structure but more unrestriced materials comprise: cellulosics is as cotton, artificial silk, wooden Time of Fluff Slurry, bog moss, or the like.Hydrocarbon synthesis thing such as polyolefin, polyester, polyurethane, polyimides, PTFE, or the like; Super wet stock such as hydrolysis and crosslinked polyacrylate, polyacrylonitrile, acrylic compounds, the graft polymers of absorbing, or the like; Stink controlling agent such as aromatic, zeolite, sequestering agent, or the like, and any other can be used as any other material of absorbent product parts.

The length of elastic telescopic spare 38 is significantly greater than its width, and this width is again significantly greater than its thickness.Elastic telescopic spare 38 desirable any elastic telescopic structures are as long as it can flexibly pass to goods 10 with the rib collar and the buckling of swelling.Representative but more unrestriced useful structures comprise: sheet, film, foam, band, Woven fabric or non-woven fabric, or the like.The material that can be used for forming this structure comprises: the hydrocarbon synthesis thing, as polyolefin, polyester, polyurethane, polyimides, PTFE, block polymer (as s-B-S and styrene-isoprene-styrol copolymer), ethylene vinyl acetate copolymer, synthetic rubber etc.; Organosilicon such as polysiloxanes etc.; Natural rubber and other any materials that can be used as the absorbent product parts.

The character of elastic telescopic spare 38 keeps balance with the character of all the other materials that are used for making absorbent product 10.This just allows elastic telescopic spare 38 that goods 10 bending is longitudinally formed simultaneously along the barrier layer rib collar 44 of the side 14 of goods.Elastic telescopic spare 38 be by the lamellar tensile strength less than 200psi, be more preferably about 10-100psi and the flaky elastic material of the about 50psi of preferably about 25-forms.In addition, the elongation at break of this elastomeric material is at least about 100%, and better about 200-is about 350%, and preferably about 250-about 300%.This material can be by ASTM D-357495 test, and the response rate of this material is with at least about 60%, better at least about 80%, preferably at least about 90%.

Though we do not wish to adhere to following opinion, can believe, flaky elastomeric material or similarly geometry be to have to make superior character that the present invention is achieved.At first, when extending under tension force, the thickness of material and width can reduce.When the some parts of this material fixing in the tension conditions and when allaying tension force subsequently, can think that it is some thickness and width at least that this material can attempt to recover it.Like this, this material will be wrinkling and with end part 32 separately, form the barrier layer rib collar of erectting 24.For making the The above results optimization, elastic telescopic spare 38, inner region 36 and outskirt 34 threes' width will be kept in balance so that the barrier layer rib collar 44 of setting to be provided.If inner region 36 does not have enough width, can be very little barrier layer rib collar 44 only also even have.On the contrary, if the width of outskirt 34 is insufficient, in fact just do not have the side rib collar.

As mentioned above, can form rib collar laminate 39, it comprises the first surface 40 and the cover 20 of elastic telescopic spare 38.Elastic telescopic spare 38 best incorporated are in the rib collar laminate 39 of stretched condition.This rib collar laminate 39 is attached on the end part 32 in the outskirt 34 of side flange 26, but is not on the end part 32 that directly is attached in the inner region 36.Like this, when elastic telescopic spare 38 was returned to relaxed state, this rib collar laminate just can be separated within outskirt 34 with end part 32, and forms upwardly extending barrier layer rib collar 44.

Part 32 material therefors in the end can be similar to and aforementionedly be used to cover 20 and/or the material of block piece 22.End part 32 itself can be the parts of independent attachment.But it preferably becomes the extendible portion on barrier layer 22 as shown in Figure 3.Can see that in this embodiment side flange 26 is to be formed by the material that the remainder of warm goods is inhaled in body plan, do not need to this product utilization and be attached extra structure form stretch out side flange 26 and extend upward barrier layer rib collar 44 both.

Nature is if end part 32 ' " be to be formed by individual components, this individual components then can be attached on the remainder of absorbent product 10, as shown in Figure 6.In this embodiment, cover 20 ' " and elastic telescopic spare 38 ' " only extends to goods 10 ' " side 14 ' ".The method useful binders of attachment, ultrasonic, make or other bindiny mechanisms that the one skilled in the art knows.

Can make rib collar laminate 39 separately with several method with the end part in the inner region 36 32.If these two parts be with binding agent in conjunction with the time, the method for separating can be that (1) stops coating adhesive material between the parts in inner region 36; (2) make any binding agent unsticking that exists in the inner region 36; (3) barrier is lived this binding agent; Or the additive method known to (4) one skilled in the art.Engage if these two parts are logical heating and/or pressurization, the method for then separating can be that (1) makes the temperature of inner region and/or pressure remain to be lower than to engage required numerical value; (2) they are kept separately in inner region 36; Or the additive method known to (3) one skilled in the art.Other associated methods is that the expert is known with relevant separating method equally.

Absorbent product 10 can be by making by hand, the also method manufacturing that can generally show according to Fig. 7, and the method is described below.At first on the donor rollers with under cover material 100 unwindings.One first lamination adhesive material 102 is applied on the surface of cover material 100, and tensile elasticity telescopic material 104 also is adhered to it on the cover material 100.This has just formed the rib collar laminate in one or more district of cover material 100.Elastic flexible material 104 stretches at least about 10% better about 10-40%, and preferably about 15-30% before being preferably in and adhering to cover material.

Intermediate layer 106 can be adhered on the cover material 100 in the mode that overlaps onto on the elastic flexible material 104 then.Because above-mentioned overlapping rib collar laminate and the end part of just preventing is superimposed afterwards.After on intermediate layer 106 is adhered to cover material 100, can be applied to one second adhesive material 108 on this structure.It is the intermediate layer 106 of part at least that this second adhesive material 108 can cover.Can be placed to a keeper 110 on this structure and adhere on the intermediate layer 106 this moment.At last barrier material 112 is applied on this structure.It is the narrowest that barrier material 112 cans be compared to cover material 100 most, can wrap up on the side 114 of putting barrier material 112 on the spot and the exposed surface that is fixed to barrier material 112 with the limit portion that allows the rib collar laminate, and this for example can carry out at folded section 118 places.The top of barrier material 112 can be provided with construction adhesive 116.Each absorbent product 120 can for example be formed by reciprocating type cutting knife 122 or rotary cutting knife (not showing bright) by the final structure of the vertical end that is close to absorbent structure 110.At this moment can be deployed to binding agent on the part of all the other exposed regions of barrier material 112 by taking off the joint of releasing liner protector.Can and store for future use this final products packing then.

In another embodiment between keeper 110 and barrier material 112 of intermediate layer, said method can be revised slightly.Keeper 110 can be placed into slightly lapping on second jointing material 108 between the elastic flexible material 104.Laminating adhesive 116 can be applied on the barrier material 112 once more.One intermediate layer wideer than keeper can be deployed on the barrier layer.Then can be coated with another hereinto among the interbed presses binding agent to guarantee the excellent bonds of keeper layer by layer.Then this structure is attached on cover/elastic component/maintenance layer.This part the intermediate layer passivation wideer than keeper binding agent, formed massif 44 thus.

In second kind of other method that has removed in the intermediate layer, said method will remake correction.Specifically, keeper 110 can be set to (slightly lapping) on second adhesive material 108 between the elastic flexible material 104.But this second adhesive material 108 becomes to make to have two zones uncoated binding agent on the both sides of keeper 110 through being coated with.Continue the method, as mentioned above, barrier material 112 is applied on keeper 110 and the cover/elastic component structure.In addition, this barrier material 112 should not have binding agent in the zone corresponding to the no covered portion of cover material 100.The no covered portion of cover material 100 and barrier material 112 has prevented that these two parts from engaging and formation barrier layer rib collar 44 at inner region.

During use, can from its packing, take out this product, then for example after the binding agent of combination usefulness is exposed, this product is attached in the crotch part of underwear of user.When being attached like this, elastic telescopic spare 38 can loosely make crooked longitudinal axis transmission along product, simultaneously rib collar laminate 39 is pushed open from end part 32 and is formed upwardly extending barrier layer rib collar 44, with help to prevent the body transudate be leaked to goods 10 vertical side 14 around.

Top explanation and example are with helping improve and understand without limitation invention disclosed herein.Owing to make the present invention that numerous modification and form of implementation can be arranged under the prerequisite that does not break away from spirit of the present invention and scope, the present invention should be understood according to the accompanying Claim book.

Claims

1. absorbent product, it has at least partially by the end limit of pair of opposing and the determined periphery of the side that is oppositely arranged that roughly extends between this limit, opposite end, and these goods comprise: (a) cover material of liquid thoroughly; (b) adjacent perimeter is attached to the lyophoby barrier material on this cover material effectively; (c) be located at absorbent structure between this cover material and the barrier material; (d) a pair of side flange, each side flange is from extending outwardly into the distal part of a side adjacency of goods therewith with the contiguous nearly portion of absorbent structure, and each side flange has end part, and the outskirt of the adjacent setting of above-mentioned periphery and the inner region that is provided with between this outskirt and absorbent structure; (e) possess the elastic telescopic spare of width, thickness and length, it is above-mentioned inner region and a part of outskirt at least that its width then is enough to cross over, and its length connects with each side flange effectively; The length of this elastic telescopic spare is significantly greater than its width, and this width is significantly greater than its thickness; Wherein each elastic telescopic spare is laminated to and forms the rib collar laminate on the aforementioned cover material; Each rib collar laminate is attached on the end part of side flange of described outskirt, and each rib collar laminate is not attached on the bottom of described inner region; Described cover material is that the central area at these goods is attached on the absorbent structure at least; And being in relaxed state following time when described elastic telescopic spare, at least a portion of each rib collar laminate just can be from going out with the end part upper deflecting of contiguous each side flange of described inner region.

2. absorbent product as claimed in claim 1, wherein, described each elastic telescopic spare comprises flexible foam.

3. absorbent product as claimed in claim 2, wherein, it is banded that described flexible foam is.

4. absorbent product as claimed in claim 2, wherein, described flexible foam in the form of sheets.

5. absorbent product as claimed in claim 1, wherein, the width of described elastic telescopic spare is enough to cross over described inner region and outskirt.

6. absorbent product as claimed in claim 1, wherein, described rib collar laminate is attached to the side towards clothing of part of the aforementioned end, is equivalent to the surface of described goods towards clothing.

7. elongated shape absorbent product that is used for the absorber exudate, these goods have at least partially by the end limit of pair of opposing and the determined periphery of the side that is oppositely arranged that roughly extends between this limit, opposite end, and in use have towards the surface of body with towards the surface of clothing, these goods comprise: (a) liquid cover material thoroughly; (b) liquid-tight barrier material, it is attached on this cover material at contiguous above-mentioned periphery place; (c) absorbent structure, it is arranged between cover material and the barrier material, and it comprises keeper and between this keeper and cover material and be attached to middleware on the keeper; (d) a pair of side flange, each side flange extends outwardly into the distal part of one of contiguous this goods dual-side from the nearly portion with the absorbent structure adjacency, and each side flange has end part, and the outskirt of peripheral adjacent setting and the inner region that is provided with between this outskirt and absorbent structure; (e) elastic telescopic spare, it has, and to be enough to cross over be width, the thickness of described inner region and part outskirt and the length that allows to be connected effectively each side flange at least, the length of this elastic telescopic spare is significantly greater than its width, and this width is significantly greater than its thickness; Wherein each elastic telescopic spare is laminated to and forms the rib collar laminate on the cover material; Each rib collar laminate is attached on the end part of the side flange in the outskirt and is not attached on the bottom in the inner region; Described cover material is to be attached on the intermediate layer in the intermediate layer is stacked to the zone of keeper at least; When elastic telescopic spare was in relaxed state, each rib collar laminate had at least a part to go out from the end part upper deflecting of each side flange of contiguous inner region simultaneously.

8. absorbent product as claimed in claim 7, wherein, described rib collar laminate is attached to the side towards clothing of part of the aforementioned end, is equivalent to the surface towards clothing of described goods.

9. absorbent product as claimed in claim 7, wherein, described intermediate layer is wideer than keeper, and then is attached on the barrier material above the intermediate layer part of this keeper.

10. absorbent product as claimed in claim 7, wherein, described elastic extension part is not attached on the intermediate layer in fact.

11. a method that forms absorbent product, the method comprise the steps: that (a) stretch one first elastic flexible material and it is attached to has on the cover material of continuous length basically; Form one first rib collar laminate with edge place, a first side at contiguous cover material; (b) independently one section absorbent structure that will have vertical end and a cross side is contiguous on the elastic flexible material, and making this elastic flexible material is not that absorbent structure covers basically; (c) will be actually successive one section barrier material and be attached on the absorbent structure, be attached on the part cover material adjacent, be attached on the part rib collar laminate that the lateral edges of cover material is close to therewith with vertical end of absorbent structure; And allow the part between the lateral edges of the lateral edges of rib collar material and absorbent structure of rib collar laminate in the inner region not be attached barrier material basically; (d) from successive one section cover material, absorbent product is separated.

12. method as claimed in claim 11, the method one second elastic flexible material that also comprises the steps: to stretch, it is attached to comes down on successive one section cover material, to form the second rib collar laminate in connection with the second side edge relative with a first side edge of cover material.

13. method as claimed in claim 12, the method also include following step: between first and second elastic flexible materials, the intermediate layer is attached on the cover material.

14. method as claimed in claim 11, the method also are included in following step: the intermediate layer is attached on the barrier material.

15. method as claimed in claim 11, the method is also comprising following step: by at least a pattern of avoiding engaging whole cover material with adhesive material be applied on the cover material, on first and second elastic flexible materials and on the barrier material, also with on the barrier material of adhesive coated at least one and the inner region of elastic telescopic material.