CN1242740A - Improved composite elastic material and process for producing same - Google Patents
Improved composite elastic material and process for producing same Download PDFInfo
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- CN1242740A CN1242740A CN 97181146 CN97181146A CN1242740A CN 1242740 A CN1242740 A CN 1242740A CN 97181146 CN97181146 CN 97181146 CN 97181146 A CN97181146 A CN 97181146A CN 1242740 A CN1242740 A CN 1242740A
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Abstract
The present invention relates to dimensionally stable and/or latent composite elastic laminate materials. The method of manufacturing the composite elastic laminate materials includes providing a polymeric material having a first length, stretching the polymeric material to a second length and bonding at least one non-woven facing to the polymeric material in a calender consisting of two smooth-surfaced rolls, such that the elastic component is not damaged or preconditioned to damage during the use of the personal care article in which the composite elastic material is used.
Description
FIELD OF THE INVENTION
The present invention relates to the composite elastic material of improved stress relaxation and improved dimensional stability.The invention still further relates to the stable method with potential composite elastic material of manufacturing dimension, this material has improved stress relaxation performance.
Background of the present invention
The present invention relates to dimensionally stable and/or potential composite elastic material, this material has improved stress relaxation and creep-resistant property and is lamination.The invention still further relates to the method for making it.
Term as used herein " composite elastic material " refers to the elastomeric material of multicomponent or multilayer, and wherein one deck is flexible.The composite elastic material of " dimensionally stable " is such material, and it keeps its size, i.e. length and width under actual service conditions.Service condition generally comprises body temp, humidity and heat." potential elastic laminate material " refers to laminated material, and it has a kind of component that can elastification that is in resting state, it can be activated if desired, general use as hot stimulus.In other words, potential elastic laminate material will become flexible when being activated.
Term " stress relaxation " is defined as the constant required load of elongation of maintenance in a period of time.Term " creep " is defined as under constant load or active force and since some irreversible flow or structure break the shape of article or the loss of size.Two class creeps are arranged: (1) and time are irrelevant, under constant load or active force since irreversible flowing or the breaking of structure produce the variation of shape, and after active force is cancelled, can not recover; (2) depend on the time, after active force is cancelled, can recover some shape.
Composite elastic material and its laminate have been widely used, particularly in the field of absorbing articles and one-off.As used herein like that term " absorbing articles " refers to the device that can absorb and keep bodily exudate, especially refers to can be placed on or near wearer's health, so that absorption and maintenance are from the device of the various exudates of health discharge.Term " absorbing articles " plan comprises product and the analog that diaper, training pants, absorption underpants, incontinent person use.What the term of usefulness " disposable " was said here is not plan washing or recovery in addition, or the absorbing articles that uses as absorbing articles again.
In general, composite elastic material is continuous long filament type structure, and wherein the calender roll and the anvil roller of the continuous general parallel elastic yarn utilization heating of one deck are adhered at least one finish coat.The continuous fibers laminate is disclosed in authorizes Fitts, No. 5,366,793, people's such as Jr United States Patent (USP) and authorizing in No. 5,385,775, the United States Patent (USP) of Wright, and both whole contents are here quoted as a reference.
Generally, the pattern that calender roll is made in some way makes that final laminated material is not all to be bonded together on its whole surface.If desired, anvil roller also can be shaped on pattern, generally is no more than about 50% of total surface area for the bounding point surface area of the maximum of the given surface area on the side of laminate.Generally, the percentage of bond area is that about 10% of laminated material area changes to about 30%.For example, No. 5,385,775, the United States Patent (USP) of authorizing Wright with authorize in people's such as Brock No. 4,041,203, the United States Patent (USP) and disclose such method, both whole contents are here quoted as a reference.
A shortcoming of this laminating method is that figuratum roller has seriously damaged elastic yarn.To the damage effect of elastic yarn elastic characteristic, thereby influence its performance to composite elastic material and its laminate.This is owing in use under the condition of body temperature and stretching, cause what fibrous fracture caused.
Therefore, need a kind of method of making composite elastic material, the size of material is stable.In addition, also need a kind of method of making composite elastic material, make the strand that in manufacture process, can not damage polymer.
Summary of the present invention
The invention provides a kind of method of producing elastic laminate material dimensionally stable and/or potential, method comprises following each step: the polymeric material that provides one first length, oriented polymeric material to one second length, the non-woven facing of one deck is adhered on the polymeric material with inciting somebody to action at least in the calender roll that two smooth flat are arranged, so that reduce the infringement to elastic material structure.The present invention also provides a kind of method, and the surface area of its central roll 100% contacts with elastomeric material.Therefore the single composite elastic material of the present invention's production by calendering polymeric material between level and smooth surface roll and at least one non-woven facing, makes it little of ignoring to the infringement of polymer.
Method of the present invention has not only overcome the problem of prior art, and several advantages are provided.These advantages comprise: (1) improves the performance of resulting laminate to dimensional stability greatly; (2) under the practical application condition, reduced the load loss a period of time of in; (3) by in final laminate, using more a spot of elastomeric material might save cost; (4) produce potential and/or heat-shrinkage material; (5) in the laminate that obtains, utilize whole potential of elastomeric polymer.The present invention also provides the method for making low-cost non-woven elastic.
Can be according to the composite elastic material that the present invention produces as the elastic component of individual absorbent article, for example in the limit, side of diaper and training pants.They also can be used as the elastic component and the diaper of trouser legs, training pants, the liner of incontinent person's device and analog.
Aforesaid and other characteristics and the advantage of the present invention, when each detailed description of the preferred embodiments below attached example is read, it is clearer to become.
Brief description of the drawings
Fig. 1 is a schematic diagram of making the composite elastic material method according to the present invention;
Fig. 2 is the perspective view of exemplary disposable use clothes, is training pants in this case, and it uses according to laminated material of the present invention;
Fig. 3 is the stress relaxation modulus to the curve map of time, and the time is definite in the stress relaxation test of the composite elastic lamination material that has pattern roller to produce and the composite elastic lamination testing of materials of producing with two smooth roll.
Detailed description of the preferred embodiments
The object of the invention is to has the creep-resistant property that improved pressure is loose and improve, the composite elastic material of dimensionally stable and its laminate. The present invention also relates to form method dimensionally stable and the potential composite elastic material that improved stress relaxation characteristic is arranged.
Referring now to accompanying drawing,, wherein identical reference marker represents structure identical or of equal value, and in Fig. 1, the method for composite elastic material is made in mark 10 explanations with level and smooth roller calendering especially.
According to the present invention, elastic fabric 12 is from feed rolls 14 debatchings, and when feed rolls 14 was rotated along the direction of arrow associated with it, fabric 12 was along the specified direction operation of arrow associated with it. The physical arrangement of elastic fabric 12 can be film, non-woven fabric or strand. The roll gap 16 that elastic fabric 12 is arranged by the S forming roll that is formed by overlapping roller 20 and 22.
Elastic fabric 12 also can be made in continuous process, the process that for example the following describes, and by roll gap 16, rather than be stored on the feed rolls.
One first shrinkable layers 24 is from feed rolls 26 debatchings, when feed rolls 26 when the specified direction of the arrow that is associated with it is rotated, this shrinkage layer is along the specified direction operation of the arrow that is associated with it.One second shrinkable layers 28 is from 30 debatchings of one second feed rolls, when feed rolls 30 when the specified direction of the arrow that is associated with it is rotated, this shrinkage layer is along the specified direction operation of the arrow that is associated with it.First shrinkable layers 24 and second shrinkable layers 28 are arranged 34 roll gap 32 by the calender roll that is formed by calender roll 36 and 38.First shrinkable layers 24 and/or second shrinkable layers 28 can be made by pressing method, for example meltblown, spun-bond process or film extrusion, and they are directly by roll gap 32, rather than at first be stored on the feed rolls.
Elastic fabric 12 is arranged 18 roll gap 16 by the S forming roll, as specified with the arrow of overlapping roller 20 and 22 direction of rotation that are associated along reverse S path.Arrange 18 from the S forming roll, elastic fabric 12 is by arranging 34 pressure nip that form 32 by calender roll.Additional S forming roll arranges that (not shown) also can be incorporated into S forming roll layout 18 and calender roll is arranged between 34, so that stable material that is stretched and control amount of tension.Because control S forming roll is arranged 18 roller outer peripheral lines speed, make its outer peripheral lines speed less than the roller of calender roll layout 34, the elastic fabric 12 between the pressure nip of S forming roll layout 18 and calender roll layout 34 is stretched.Importantly, elastic fabric 12 will move along the direction that film is stretched with the silk of thigh form, thereby make silk can provide required tensile properties in final composite.Speed by regulating each roller poor, elastic omentum 12 is stretched, make its stretch required amount and maintaining under such stretching condition, first shrinkable layers 24 and second shrinkable layers 28 combine formation composite elastic material 40 by calender roll 36 and with elastic omentum 12 at them at 38 o'clock simultaneously.Calender roll 36 and 38 surface are smooth and do not have pattern.Because the surface of two calender rolls all is ganoid, the bond area of composite elastic material 40 is 100% like this.
Best, the length that is stretched of polymeric material is about 50% of raw footage at least.Best, the length that is stretched is high to about 95% of the final elongation of elastomer.It should be noted that different elastomers has different elongations.More preferably, the length that is stretched should arrive in about 600% the scope about 200%, and elongation defines according to the following equation in the formula:
Referring again to Fig. 1, composite elastic material 40 arranges that in S forming roll layout 18 and bond roll 34 tensile forces that provide are loose at once after discharging, thereby first shrinkable layers 24 and second shrinkable layers 28 are shunk in composite elastic material 40.Be preferably in the loose permanent elongation length that keeps about 1.5 times of original lengths afterwards of the film that is stretched.
Then composite elastic material 40 is wound up on the up-coiler 42.Composite elastic material 40 can or not have to reel under the tension force under tension force.If do not reel under the tension force having, composite elastic material will be stored on the roller with its state that is not stretched, and makes material at any time to be stretched.If use tension winding, composite elastic material is to be stored under the condition of being stretched.The elastic characteristic that is stored in the material under the condition of being stretched can make its reactivation with heat or other conditions.Another kind is that composite elastic material 40 can continue on production line, so that further process or transform (not shown).
Useful polymeric material is commonly referred to as " elastomer " in forming elastic fabric 12.A kind of elastomer is a rubber elastic material, can be elongated to several times of its original loose length, tends to recover fully its elongation behind the bias force that discharges elongation.As used herein, term " recovery " refers to, and stops the contraction that bias force makes the material that is stretched make the material elongation with bias force after.McGraw-Hill.Inc.1991 indicates as " elastomer " these examples of material in the material handbook 284-290 page or leaf that people such as Bradley compile, and it is hereby incorporated by.
Useful elastomer can comprise in one group of material of elasticity thermoplastic polymer and selecting among the present invention.Elastomeric physical arrangement can be strand, casting or the blown film, curling of the fiber of required thermoplastic polymer or their combination, any supatex fabric.
Suitable elasticity thermoplastic polymer comprises styrene block copolymer, and for example (Shell Chemical Company of Houstan, registration mark Texas) on sale is KRATON from the shell chemical company of Texas, Houston
Copolymer.KRATON
Block copolymer has several different prescriptions, in United States Patent (USP) 4,663,220; 4,323,534; 4,834,738; 5,093,422; With 5,304, can find many such prescriptions in No. 599, they are hereby incorporated by.
Operable another group example resilient material comprises the polyurethane elastomeric material, and for example from the Michigan, the road chemical company of Midland (Dow Chemical Company of MidlandMichigan) registration mark on sale is PELLATHANE
Elastomeric material and Ohio, the B.F. Gu Deliqi ﹠amp of Akron; (the B.F.Goodrich ﹠amp of company; Company of Arron Ohio) registration mark is ESTANE
Elastomeric material or the registration mark of Morton Theo Cauer company (MortonThiokol Corporation) be MORTHANE
Elastomeric material; The polyester elastomeric material, moral Bill Rammell for example, the De Nimangsi of E.I. Du Pont of Wilmington; (the E.I.Dupontde Nemours ﹠amp of company; Company of Wilmington Delaware) the commercial trade mark is the elastomeric material of HYTREL and originally from Holland, Aksu Plastics Company of Arnhem (Akzo Plastics ofArnhem, Holland) ARNITEL that is known as on sale
(registration mark), now from Holland, (based on the polymer that the catalytic reaction of metallocene is produced, sell has the Michigan to the big special DSM N. V. in west for DSM of Sittard, Holland) elastomeric material on sale, and the road chemical company of Midland is called ENGAGE
The polyethylene of (registration mark) is a polymer based, and Texas, and the registration mark of the exxon chemical company (Exxon Chemical Company of BaytownTexas) that shellfish is honest is ACHIEVE
Polypropylene be that polymer based and registration mark are EXACT
And EXCEED
Polyethylene be that the basis is for polymer.
Shrinkable layers or facing 24 and 28 can be fibrous non-woven materials, for example nonwoven fabric or meltblown fabric.Supatex fabric, as described herein, refer to fabric have each fiber or spin constantly to repeat a kind of structure of the mutual afterturn of undistinguishable mode.Unit Weight according to used non-woven material also can use many fibrous nonwoven facings 24 and 28, as Fig. 1 represents.
Shrinkable layers 24 and 28 can be made by the whole bag of tricks, this including, but not limited to, meltblown and spun-bond process.The fiber that melts and sprays is to make like this, the thermoplastic material of fusion is pressed through a plurality of very thin pore that is generally circle of melt blown die, make the line of fusion or the high speed that silk enters into convergence, normally in Re gas (as the air) stream, the silk that squeezes out of the flow direction of air-flow and melting heat moulding material or the direction of line are identical, thereby the silk or the line that squeeze out are attenuated, promptly stretch or elongation, so that reduce their diameter.Line or silk can taper to the diameter of microfibre, mean that the average diameter of line or silk is not more than about 75 microns (microns), generally from 0.5 micron to 50 microns about, especially from 2 microns to 40 microns about.Then, carry meltblown fibers, and be placed into the collection surface, so that make the fabric of the meltblown fibers of random distribution by high velocity air.Meltblown is well-known, description is all arranged in various patents and publication, this comprises the B.A. Wen De of the state-run scientific research experiment institute of the U.S. (NRL), E.L. No. 4364 of cloth grace and D.D. Fu Lihadi (B.A.Wendt, E.L.Boone and D.D.Fluharty) reports " manufacturing of ultra-fine organic fiber "; The K.D. Lao Lunsi of NRL, No. 5265 reports " modifying device that ultra-fine thermoplastic fibres is shaped " of R.T. Lucas and J.A. poplar lattice (K.D.Lawrence, R.T.Lukas and J.A.Young); 3,849, No. 241 above-mentioned lists of references of United States Patent (USP) of No. 3,676,242, the United States Patent (USP) of Prentice (Prentice) and this front yard people such as (Buntin).Their full content is hereby incorporated by.Meltblown fibers is a microfibre, and it can be continuous or discontinuous, and generally its average diameter is less than 10 microns, and they generally felt like jelly when went up on the collection surface when being deposited on.
Spun-bonded fibre is the fiber of minor diameter, and they are made like this, and thermoplastic material extruding from the many thin normally circular pore of spinning head of fusion is come out to become silk.The fluid that sprays or spray stretches or the diameter of the silk that other spunbond mechanisms of being familiar with reduce rapidly to squeeze out by not having then.No. 4,340,563, A Paner people's such as (Appel) United States Patent (USP); No. 3,802,817, Ma Chuji people's such as (Matsuki) United States Patent (USP); Execute people's such as (Dorschner) how No. 3,692,618, United States Patent (USP) more; No. 3,562,615, the United States Patent (USP) of many glass (Bobo); No. 3,502,763, the United States Patent (USP) of Ha Tuoman (Hartman); No. 3,502,538, Peter's gloomy (Peterson) United States Patent (USP); Jane's (Kinney) United States Patent (USP) 3,341,394 and 3,338, No. 992; The production of spunbonded non-woven fabrics all has been described in No. 803,714, the Canadian Patent of No. 3,276,944, the United States Patent (USP) of Li Wei (Levy) and Harmon (Harmon).The disclosure of these patents all is incorporated herein as a reference.Spun-bonded fibre generally cannot not be sticking when go up on the surface when being deposited on to collect.Spun-bonded fibre generally is continuous, and its average diameter (from being 10 sample at least) is greater than 7 microns, particularly at about 10 microns to about 20 microns.
Best, non-woven shrinkable layers comprises spun-bonded fibre.Concerning great majority were used, the gross weight of spunbond finishing material was every square yard about 0.4 ounce.
Can use various technology elastic fabric 12 is fixed on non-woven facing 24 and 28, for example bonding by adhesive.In adhesive was bonding, adhesive was applied between polymeric material and the facing as hot melt, pressure-sensitive adhesive, so that polymeric material and facing are bonded together.For example can spray, print or melt and spray and apply adhesive by fusing.Various types of adhesives all have sale, this comprises those adhesives and the Texas that produces for the heat fusing on basis from amorphous polyalphaolefin, ethylene-vinyl acetate, the shell chemical company of Houston (ShellChemical Company of Houston, Texas) adhesive of the KRATON trade mark of Xiao Shouing.
The composite elastic material 40 that obtains has the elastic characteristic identical with pure polymeric material.The laminated material that obtains does not have flexible loss, and provides than the laminated material that the production of pattern calender roll is arranged with one or several better physical fitness is arranged.In the laminated material of the present invention the silk also more I haven't seen you for ages the fracture.
The stress relaxation of the composite elastic material 40 that obtains at the stress relaxation that pattern bonded material is arranged of the heat of internal ratio like combinations in about 8 hours to 1psi (pound/square inch) when young.Be preferably in about 8 hours stress relaxation ratios pattern bonded material 2psi is extremely when young arranged.
Referring now to Fig. 2,, the disposable use clothing 50 of the elastic laminate of making according to the present invention is inserted in explanation among the figure.Though what represent in Fig. 2 is training pants, to understand the use of the elastic laminate of producing according to the present invention, be not limited to such articles for use, also can act in the various widely application, include but are not limited to: this, as the device and the analog of diaper, incontinent person's use.
Referring again to Fig. 2, disposable use clothing 50 comprises two side parts 54 and 56 of excreta containing portion 52 and definite waist opening 58 and a pair of leg opening 60 and 62.Fig. 2 illustrates that disposable use clothing 50 is fixed on the wearer's who is represented by dotted lines the trunk 64.Side part 54 comprises stretchable side component 66 and stretchable side component 68, uses the intermediate member of being made by non-stretchable material 70 to connect.Equally, side part 56 comprises stretchable side component 72 and stretchable side component 74, uses the intermediate member of being made by non-stretchable material 74 to connect.Disposable use clothing 50 also comprises Attacking Midfielder's elastomeric element 78 and low back elastomeric element 80, is used to provide the additional elasticity along waist opening 58.Excreta containing portion 52 between side part 54 and 56 is provided with leg elastic 82.
Composite elastic material of the present invention can be used for making the various piece, particularly side part 54 and 56 of disposable use clothing 50.In the leg elastic 82 of disposable use clothing 50, also can use laminated material.
Example
Composite elastic material is to make with the calender roll of two smooth surfaces according to the present invention.The control material is to make with pattern roller according to the prior art method.Two kinds of materials are made by same polymeric blends.
Stress relaxation
From the Massachusetts, (Sintech, Inc.ofStaughton Massachusetts) measure the stress relaxation of the sample of control sample and invention on the Xin Taike 1/S tension test frame of Gou Maiing in Xintek Inc. of Si Taogedun.The size of sample is about 3 inches wide, and 7 inches long.Each sample is clamped between the jaw, and the distance that clips to folder is 3 inches.Each sample and clamping device are enclosed in the environmental chamber, be equilibrated at 100 °F about 3 minutes.Each sample under the displacement of 20 inches of crosshead per minutes, stretch then to about 4.5 inches of final constant elongation (50% elongation).To each sample, need to keep the load of 50% elongation to observe about 8 hours as the function of time.
Deduct according to the long-pending engineering stress that calculates of the initial cross sectional of each sample (pound/per square inch, or psi) from the data of Xin Taike (Sintech) 1/S system.Calculate strain or elongation from the distance that initially clips to folder and constant elongation.The ratio of stress and strain draws stress relaxation modulus (psi).To the composite elastic lamination material of control and invention, produce the curve of stress relaxation modulus to the time with these data.Fig. 3 is the composite elastic lamination material (A) produced with pattern roller and with the stress relaxation modulus of the composite elastic lamination material (B) of two the smooth roll productions curve map to the time.
Obtain data adapting and be applied to following model by the power function rule, so that try to achieve index, m:
σ=(σ
The t=0.1 branch) (t
-m) σ is a stress in the formula, t is that to represent material be load or the elastic characteristic that how soon loses it for time and m.Table 1 expression actual load loss late or slope, 100 following actual load losses as calculating and in 8 hours with above-mentioned formula.From table 1, as seen, use level and smooth calender roll advantageously to reduce the amplitude of slope and the load loss of percentage.
Table 1
| Sample number | Slope | The % load loss |
| Pattern roller | -0.13 | ?68％ |
| Flat roll | -0.10 | ?55％ |
Certainly, should be appreciated that change and the modification that to carry out wide range to each above-mentioned embodiment.Therefore, what say is that top description is the explanation of this invention rather than to its restriction, and following claim comprises all equivalents, is the definition of this invention.
Claims (28)
1. method of producing the composite elastic material of dimensionally stable, it comprises:
Provide the polymeric material of one first length;
Described polymeric material is stretched to one second length; With
In the calender roll of forming by two smooth surface rollers, at least one facing is adhered to described polymeric material.
2. the method for claim 1, wherein described polymeric material comprises the elasticity thermoplastic polymer from one group to be selected.
3. method as claimed in claim 2, wherein, described elasticity thermoplastic polymer comprises block copolymer, pi, polyester and selects from the catalytic reaction polymer of metallocene for the basis from one group.
4. method as claimed in claim 3, wherein, described elasticity thermoplastic polymer is a block copolymer.
5. method as claimed in claim 3, wherein, described elasticity thermoplastic polymer is a pi.
6. method as claimed in claim 3, wherein, described elasticity thermoplastic polymer is a polyester.
7. method as claimed in claim 3, wherein, described elasticity thermoplastic polymer is from the polymer of metallocene for the catalytic reaction generation on basis.
8. the method for claim 1, wherein described second length of described polymeric material is at least 50% of described first length.
9. the method for claim 1, wherein the elongation of described polymeric material is from about 200% to about 600%.
10. the method for claim 1, wherein described facing is fibrous supatex fabric.
11. method as claimed in claim 10, wherein, described fibrous nonwoven fabric comprises the fabric of meltblown fibers.
12. method as claimed in claim 10, wherein, described fibrous nonwoven fabric comprises the fabric of spun-bonded fibre.
13. method as claimed in claim 12, wherein, the base unit weight of described fibrous nonwoven fabric is 0.4 ounce every square yard approximately.
14. the method for claim 1, wherein described polymeric material is to bond to described facing with adhesive.
15. a method of producing dimensionally stable and/or potential elastic laminate material, it comprises:
Provide the polymeric material of one first length;
Described polymeric material is stretched to one second length;
Adhesive is added on the facing; With
In the calender roll of forming by two smooth surface rollers, described facing is bonded to described polymeric material.
16. method as claimed in claim 15, wherein, described adhesive is the pressure sensitive adhesive of hot melt.
17. method as claimed in claim 15, wherein, described polymeric material comprises the elasticity thermoplastic polymer from one group to be selected.
18. method as claimed in claim 17, wherein, described elasticity thermoplastic polymer comprises block copolymer, pi, polyester and selects from the catalytic reaction polymer of metallocene for the basis from one group.
19. method as claimed in claim 17, wherein, this facing is the fibrous nonwoven fabric.
20. method as claimed in claim 19, wherein, described fibrous nonwoven fabric comprises the fabric of meltblown fibers.
21. method as claimed in claim 19, wherein, described fibrous nonwoven fabric comprises the fabric of spun-bonded fibre.
22. a dimensionally stable composite elastic material, it comprises polymeric material and fibrous nonwoven facing, and wherein, the stress relaxation of described composite elastic material has the stress relaxation of bond pattern material than same composition, in about 8 hours, and about at least less 1psi.
23. dimensionally stable composite elastic material as claimed in claim 22, wherein, the stress relaxation of described composite elastic material has the stress relaxation of bond pattern material than same composition, in about 8 hours, and about at least less 2psi.
24. disposable use personal care absorbent agent articles for use, it comprises fluid permeable lining and enclosing cover, and there is absorbent core to be placed in the middle of them, wherein said enclosing cover is to make like this, make its stress relaxation that the stress relaxation of bond pattern material be arranged than same composition, in about 8 hours, about at least less 1psi.
25. disposable use absorbent articles for use as claimed in claim 24, wherein, the enclosing cover of described absorbent articles for use is to make like this, makes its stress relaxation than same composition the stress relaxation of bond pattern material be arranged, in about 8 hours, and about at least less 2psi.
26. disposable use absorbent articles for use as claimed in claim 24, wherein said articles for use are diapers.
27. disposable use absorbent articles for use as claimed in claim 24, wherein said articles for use are training pants.
28. disposable use absorbent articles for use as claimed in claim 24, wherein said articles for use are adult-incontinence person's clothing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97181146 CN1242740A (en) | 1996-12-30 | 1997-12-22 | Improved composite elastic material and process for producing same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/777,505 | 1996-12-30 | ||
| US08/854,934 | 1997-05-13 | ||
| CN 97181146 CN1242740A (en) | 1996-12-30 | 1997-12-22 | Improved composite elastic material and process for producing same |
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| CN1242740A true CN1242740A (en) | 2000-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 97181146 Pending CN1242740A (en) | 1996-12-30 | 1997-12-22 | Improved composite elastic material and process for producing same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100564018C (en) | 2003-12-31 | 2009-12-02 | 金伯利-克拉克环球有限公司 | Single sided stretch bonded laminates and preparation method thereof |
| CN101590710B (en) * | 2004-09-21 | 2013-05-08 | 屈德加薄膜产品股份有限公司 | Composite elastic web |
| CN104249543A (en) * | 2013-05-03 | 2014-12-31 | 盟迪格罗瑙有限公司 | Method of making elastic laminate |
-
1997
- 1997-12-22 CN CN 97181146 patent/CN1242740A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100564018C (en) | 2003-12-31 | 2009-12-02 | 金伯利-克拉克环球有限公司 | Single sided stretch bonded laminates and preparation method thereof |
| CN101590710B (en) * | 2004-09-21 | 2013-05-08 | 屈德加薄膜产品股份有限公司 | Composite elastic web |
| CN104249543A (en) * | 2013-05-03 | 2014-12-31 | 盟迪格罗瑙有限公司 | Method of making elastic laminate |
| CN104249543B (en) * | 2013-05-03 | 2017-08-08 | 盟迪格罗瑙有限公司 | The method for manufacturing the layered product of elasticity |
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