CN203107437U - Continuous lamination - Google Patents

Abstract

The utility model provides a continuous lamination. The continuous lamination consists of a first layer, a second layer, triangular or trapeziform absorbing cores, gaps and stretched elastic elements; the staggerly arranged triangular or trapeziform absorbing cores are sandwiched between the first layer and the second layer; the non-continuous absorbing cores are partitioned by the gaps; and the stretched elastic elements are located in the centers of the gaps.

Description

Continuous laminate

Technical field

This utility model relates to the continuous laminating thing for the production of novel insertion sheet.

Background technology

The reusable diaper of being made by cloth uses for many years.But reusable cloth diaper has the effort of processing, need effectively wash and sterilize and pollute diaper with shortcomings such as repeated uses.

The disposable urine napkin of introducing decades solves these problems to a certain extent recently.Usually, but former state is abandoned the disposable urine napkin of pollution after use, and does not need washing or sterilization.In addition, multiple existing disposable urine napkin is considered to leave skin and/or be better than cloth diaper aspect skin care compositions and methods protection skin in transmission and storage of urine, can help to avoid for example diaper rash of dermatosis thus.

Because economic cause, the existing material that is the most of origin of disposable urine napkin comes from oil is mostly made, for example polypropylene and/or polyethylene.These materials occur with the form of non-woven fabrics, layer or film usually.

The concern of having risen relevant environment in more nearest years.The increase of Number of infants is especially considered in the production of diaper and use no exceptionly.A kind of viewpoint is to use disposable urine napkin harmful to environment, because the material source that is commonly used to make diaper is in non-renewable resources, and needs a large amount of energy in its manufacture process.In addition, because the common not reproducible use of disposable urine napkin or recovery, some people thinks that their use can form burden dissatisfactory to treatment facility such as refuse landfill.

The two-piece type absorbent article has been known in the art for many years.For example, WO2010/083290, WO2010/083287, WO2010/083260 and WO2010/083293 disclose the two-piece type absorbent article that comprises outer covering piece and absorb insert, wherein insert can have the effluent that prevents the wearer make dirty containing of described outer covering piece and absorption piece, make described outer covering piece flow out and after described plug-in unit is replaced, can reuse at effluent, and described plug-in unit and/or described outer covering piece can have the property contained of raising, absorbability, the parts of material economy and/or stickiness, it makes that they are asymmetric with respect to its corresponding axis of pitch, and can have and instruct user according to the parts that are orientated to install plug-in unit and/or outer covering piece with respect to wearer's correct front and back.

Consider above-described problem, advantageously can obtain wearable absorbent articles, it provides the advantage that can bear for the care-giver, overcomes its each defective simultaneously.The structure that can simplify production process and/or reduce cost is provided also advantageously.

The utility model content

Therefore, the purpose of this utility model is to provide a kind of absorbent article that can solve the above problem, and it provides the advantage that can bear for the care-giver, and the structure that can simplify production process and/or reduce cost also is provided simultaneously.

For achieving the above object, an aspect of the present utility model relates to continuous laminate, and it comprises:

Ground floor and the second layer,

Staggered triangle or trapezoidal absorbent cores, it is clipped between ground floor and the second layer,

The gap of separating discontinuous absorbent cores,

Be positioned at the flexible member of the stretching of gap core, the longitudinal direction that each flexible member that stretches has the machine direction of being basically perpendicular to.

In one embodiment, laminate also comprises any or multiple following element: fixed system, the absorption and distribution layer between absorbent cores and the second layer.

Employing is according to continuous laminate of the present utility model, make the absorbent article of producing that the advantage that can bear is provided for the care-giver, overcome the defective of absorbent article of the prior art simultaneously, and the structure that can simplify production process and/or reduce cost is provided.

Description of drawings

Fig. 1 has shown the laminate that forms in this utility model production method, and wherein downward layer is ground floor, and the layer that makes progress is the second layer.

The specific embodiment

Definition

For illustrative purposes, following term has described implication:

" insertion sheet " used herein refers to the element of absorbent article, and it is applicable to and holds and/or absorb urine, feces, menstruation or any its combination, is applicable to that can be used as modular unit is mounted to the main leaf of absorbent article and can separates with it.

" machine direction " used herein refers to the direction of material flow in this utility model production method.In addition, staggered relatively and mobile also can be described as towards machine direction circulation of material, i.e. downstream from the upstream flow of this utility model method to this utility model method.

" fixed system " used herein refers to realize first structure fixed movably, connects or remain to the second structural system.Described system can have single retaining element, for example is bonded in one or more surperficial bonding sheets on second structure first structural being applicable to, or is applicable on first structure and is buckled in one or more surperficial hooks or hook sheet on second structure.In the mode of example, be applicable to all or part of any structure of catching and keeping second structure on first structure, for example pocket, band, hook, clasp etc. all are " fixed systems " used herein.Described system also can comprise two or more retaining elements, for example each element (as VELCRO) of hook-loop fixed system but, have each surface, convex-concave button retaining element, button and buttonhole, groove or ring, other secure fit parts etc. of applying the jointing material on it.Other embodiment of retaining element comprise slide fastener elements, " zip " co-operating member, ring, post, bag, rope or bar, little fixture, big fixture and as disclosed retaining element among WO1998/029081, the WO2002/047597 etc.

" user " used herein refers to the people of wearable absorbent article as herein described.

Fig. 1 has shown that this utility model inserts the vertical view of sheet, and its part as the two-piece type absorbent article is used.Downward layer is ground floor, and the layer that makes progress is the second layer.

With reference to figure 1, demonstrated machine direction MD.Ground floor is along machine direction MD circulation, namely from the below of figure to the top of figure.Ground floor is continuous when supplying with, and therefore inserts sheet and can produce in a continuous manner.

Ground floor can be top layer or the bottom that inserts sheet.

" bottom " used herein refers to liquid, for example urinates, can not be from the lamella that passes perpendicular to the direction of this layer plane at the liquid contact point under normal service condition.It can be the monolayer of liquid impermeability material, or can be wherein the laminated multi-layer structure that one deck does not at least see through liquid.As known in the state of the art, bottom can comprise the outer and liquid impermeability internal layer of fluid permeability, and they are by suitable the combining of layer binding agent.Binding agent can apply continuously, or can be used as discontinuous coatings such as globule, spraying, parallel eddy current.Suitable bonding is known in the state of the art and commercially available obtainable, for example can obtain from German Henkel AG﹠amp; Co. or U.S. 3M Corporate.The fluid permeability skin can be any suitable material that conventional cloth specimen quality is provided.The example of a this material is the spunbond polypropylene non-woven fabric of 20gsm (gram/square metre).Skin also can be made by the material of making the fluid permeability internal layer.And, but the outer liquid permeability that is not necessary for is still wished it provides relative cloth specimen for user quality.

" top layer " used herein refers to the permeable non-woven fabrics of liquid, and it is shaped to and covers the surface of inserting sheet and contact skin.Natural fiber or synthetic fibers can be used for forming the non-woven fabrics on top layer.Natural fiber comprises for example cotton, cellulose (wood pulp), Pilus Caprae seu Ovis or silk etc.Synthetic fibers can comprise for example polypropylene (PP), polyethylene (PE), nylon, polyester (PET) or acrylic aldehyde.Synthetic fibers also can comprise PE/PP hybrid nonwoven cloth, PE/PET hybrid nonwoven cloth or see through the biconstitutent fibre (composite fibre mixed fiber) that suitably mixes the above-mentioned material acquisition.

With reference to figure 1, discontinuous absorbent cores is fixed on the ground floor.Absorbent cores is triangle or trapezoidal, is staggered on ground floor.In other words, absorbent cores forms a line, and wherein each absorbent cores is in the direction horizontal with machine direction MD, and the direction of the absorbent cores adjacent with each is opposite.In this way, not waste of the ground floor in this utility model production method and the second layer.Therefore form the gap of strip between absorbent cores, this gap is not orthogonal to machine direction MD.

The absorbent cores useful binders is fixed.Binding agent can apply continuously, or can be used as discontinuous coatings such as globule, spraying, parallel eddy current.Suitable bonding is known in the state of the art and commercially available obtainable, for example can obtain from German Henkel AG﹠amp; Co. or U.S. 3M Corporate.Absorbent cores can be fixed by each fixing point, the pattern of fixing point make that the shape of absorbent cores is indeformable when skin stretches.

The flexible member that stretches is fixed on the ground floor, and its direction is basically perpendicular to machine direction MD.The core in the gap of flexible member between adjacent absorbent cores that stretches is to form Hookean region A.Flexible member A also useful binders fixes.The binding agent that is used for flexible member also is known in the state of the art and commercially available obtainable, can be identical or different with the binding agent that is used for absorbent cores.

Term used herein " elasticity " refers to any material, it is stretchable to when being subjected to bias force at least about the extended length of 110% its lax raw footage (being stretchable to above raw footage 10%), and do not break or rupture, and when removing suffered power, recover its extended length at least about 40%.For example, a kind of material of the 100mm of having initial length may extend to 110mm at least, and can be retracted to the length of 106mm after the power of removing.

Before being fixed on the ground floor, flexible member can be used as continuous elastic omentum and provides, and cutly then becomes suitable sheet.After this, flexible member is stretched with suitable stretch ratio, thinks that inserting sheet provides power.The stretch ratio of the flexible member that stretches is 1.5-4.0, preferred 1.75-2.5." stretch ratio " used herein refer to stretch the back flexible member length with stretch before the ratio of length of flexible member.

Flexible member is well known in the prior art, and is commercially available.The optional own elasticity foam of flexible member, elastica, elastica and its combination.

The second layer is laminated on ground floor, absorbent cores and the flexible member.Preferably, the second layer has the width identical with ground floor, makes the second layer can cover ground floor, absorbent cores and flexible member well, and without any waste or not enough.

The second layer can be top layer or the bottom that inserts sheet, and condition is that ground floor and the second layer are not top layer or bottom simultaneously.In other words, when ground floor was the top layer, the second layer was bottom; Vice versa.

Second layer useful binders is fixed to ground floor, absorbent cores and flexible member.Binding agent can be identical or different with the binding agent that is used for absorbent cores and flexible member.In this way, form the laminate of ground floor, the second layer, absorbent cores and flexible member therebetween.

Laminate is cut into the individual sheet that inserts.Cutting is carried out along the line of cut 1 in the gap between absorbent cores, respectively inserts sheet thus and has a complete absorbent cores, and all have Hookean region A at two sides.

In one embodiment, through Hookean region A cutting laminate.After through Hookean region A cutting, producing asymmetric contractility with the uneven direction in absorbent cores edge, referring to Fig. 1.Therefore, absorbent cores and insertion sheet is crooked better.Flexible member extends to the edge of top layer or bottom, and described edge rises and at the intermediate formation barrier of product.

Another aspect of the present utility model relates to continuous laminate, comprising: ground floor and the second layer; Staggered triangle or trapezoidal absorbent cores, it is clipped between ground floor and the second layer; The gap of separating discontinuous absorbent cores; The flexible member that stretches is positioned at the core in gap, and each flexible member that stretches has the longitudinal direction that is basically perpendicular to machine direction MD.

Ground floor, the second layer, absorbent cores, gap and flexible member are as mentioned above.

In a preferred embodiment, laminate also comprises any one or a plurality of following element: fixed system, the absorption and distribution layer between absorbent cores and the second layer.

" fixed system " used herein refers to realize first structure fixed movably, connects or remain to the second structural system.Described system can have single retaining element, for example is bonded in one or more surperficial bonding sheets on second structure first structural being applicable to, or is applicable on first structure and is buckled in one or more surperficial hooks or hook sheet on second structure.In the mode of example, be applicable to all or part of any structure of catching and keeping second structure on first structure, for example pocket, band, hook, clasp etc. all are " fixed systems " used herein.Described system also can comprise two or more retaining elements, for example each element (as VELCRO) of hook-loop fixed system but, have each surface, convex-concave button retaining element, button and buttonhole, groove or ring, other secure fit parts etc. of applying the jointing material on it.Other embodiment of retaining element comprise slide fastener elements, " zip " co-operating member, ring, post, bag, rope or bar, little fixture, big fixture and as disclosed retaining element among WO1998/029081, the WO2002/047597 etc.

The absorption and distribution layer is as known in the art, is the subgrade that is designed to improve liquid management in the health product.The absorption and distribution layer accelerates liquid to the obtaining and distribute of absorbed layer, to increase comfort level and the degree of freedom of consumer.It typically is fluffy softness, have three dimensional structure and be dispensed to most of absorption and distribution laminar surface near internal layer (it is again near the skin of user) to promote body fluid before absorbing big quantity of fluid in the absorbent cores that is positioned at absorption and distribution layer opposite side.Otherwise liquid can flood absorbing material at narrow relatively absorption point, rather than spreads with better absorption in the vast zone on absorbent cores surface.The absorption and distribution layer can be made by various method, for example chemical adhesion and heat bonding, and this all is well known in the prior art.

The patent of all patents, patent application and the mandate of mentioning in this utility model application thereof, the disclosed foreign patent of any correspondence disclose and publication is attached to herein by reference.But, show that hereby this is not to recognize that these file instructions of any combination by reference or discloses this utility model.Show hereby that also this is not to recognize that any commercially available material or the product instruction of describing herein or discloses this utility model.

Though described and shown specific embodiments of the present utility model, it will be apparent for a person skilled in the art that the spirit and scope that to carry out various changes and modification and not depart from this meal.Therefore, claim is intended to cover all this change and the modifications in this utility model scope.

Claims (2)

1. a continuous laminate is characterized in that, comprising:

Ground floor and the second layer,

Staggered triangle or trapezoidal absorbent cores, it is clipped between ground floor and the second layer,

The gap of separating discontinuous absorbent cores,

Be positioned at the flexible member of the stretching of gap core, the longitudinal direction that each flexible member that stretches has the machine direction of being basically perpendicular to.

2. continuous laminate according to claim 1 is characterized in that, described laminate also comprises any or multiple following element: fixed system, the absorption and distribution layer between absorbent cores and the second layer.

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