WO2013168701A1 - 複合伸縮性材料 - Google Patents
複合伸縮性材料 Download PDFInfo
- Publication number
- WO2013168701A1 WO2013168701A1 PCT/JP2013/062834 JP2013062834W WO2013168701A1 WO 2013168701 A1 WO2013168701 A1 WO 2013168701A1 JP 2013062834 W JP2013062834 W JP 2013062834W WO 2013168701 A1 WO2013168701 A1 WO 2013168701A1
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- WO
- WIPO (PCT)
- Prior art keywords
- sheet portion
- stretchable material
- nonwoven fabric
- fabric sheet
- composite
- Prior art date
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 178
- 239000000463 material Substances 0.000 title claims abstract description 155
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Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/913—Material designed to be responsive to temperature, light, moisture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/601—Nonwoven fabric has an elastic quality
Definitions
- the present invention relates to a composite stretchable material.
- a composite stretchable material that can stretch in the first direction is known (see Patent Document 1).
- the composite stretchable material includes a first nonwoven fabric sheet and a second nonwoven fabric sheet that are overlapped with each other, and a plurality of elastic members that are disposed between the first nonwoven fabric sheet and the second nonwoven fabric sheet.
- the first nonwoven fabric sheet and the second nonwoven fabric sheet are joined to each other at joint portions provided discontinuously in the first direction and in the second direction orthogonal to the first direction.
- the elastic member extends in the first direction while being separated from each other in the second direction without passing through the joint portion, and the first nonwoven fabric sheet and the second nonwoven fabric at both ends of the composite stretchable material in the first direction. Fixed to the sheet.
- the first nonwoven fabric sheet portion between two joint portions adjacent in the first direction is deformed into a convex shape outward in the thickness direction on one side surface of the composite stretchable material
- the second nonwoven fabric sheet portion between two joint portions adjacent to each other in the direction is deformed in a convex shape outward in the thickness direction on the other side surface of the composite stretchable material.
- the above-mentioned composite stretchable material is used for a member that touches or is visually recognized on the wearer's skin when worn, such as a waistline member of a disposable diaper positioned around the wearer's waist.
- the composite stretchable material is preferably more flexible.
- the heat retention function of the composite stretchable material is high, the body surface temperature of the wearer increases, which may cause stuffiness or skin trouble. Therefore, it is preferable that the heat retaining function of the composite stretchable material is low. That is, it is preferable that the thickness of the composite stretchable material is smaller.
- the composite stretchable material preferably has a better tactile sensation. Furthermore, from the viewpoint of being visually recognized, the composite stretchable material preferably has better aesthetics. That is, it is preferable that wrinkles formed in the composite stretchable material are smaller or more uniform.
- one wrinkle having a relatively high height is formed by the first nonwoven fabric sheet portion between two joint portions adjacent in the first direction, and the second nonwoven fabric sheet portion increases the height. It is believed that a single ridge is formed. However, it is difficult to form one wrinkle between the joint portions, and actually, a plurality of wrinkles having relatively low heights tend to be formed unevenly. That is, there is a possibility that a portion where the nonwoven fabric sheets are overlapped may be formed in the composite stretchable material, and the flexibility of the portion is inferior, so it is difficult to obtain a uniform excellent flexibility.
- the thickness of the composite stretchable material described in Patent Document 1 is roughly the height of wrinkles formed by the first nonwoven fabric sheet on one side of the composite stretchable material and the other side of the composite stretchable material. Corresponds to the total height of the wrinkles formed by the second nonwoven fabric sheet. Therefore, it is difficult to reduce the thickness of the composite stretchable material. And since an air layer is formed between a 1st nonwoven fabric sheet and a 2nd nonwoven fabric sheet by wrinkles, there exists a possibility that the heat retention function of a composite elastic
- the distance between the joints in the first direction is reduced, a uniform wrinkle may be formed.
- the interval is reduced, the area or number of joints per unit area of the composite stretchable material increases, and the flexibility of the composite stretchable material may be reduced.
- the area of each joint portion is reduced in order to suppress a decrease in flexibility, the first nonwoven fabric sheet and the second nonwoven fabric sheet are easily separated from each other.
- a composite stretchable material that is stretchable in a first direction, the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion overlapped with each other, and the first nonwoven fabric.
- a plurality of elastic members disposed between the sheet portion and the second nonwoven fabric sheet portion, wherein the elastic members are spaced apart from each other in a second direction orthogonal to the first direction.
- a composite stretch material is provided that extends and the first nonwoven sheet portion and the second nonwoven sheet portion are joined together by an adhesive applied to the elastic member.
- a composite stretchable material that is stretchable in a first direction, the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion overlapped with each other, and the first nonwoven fabric.
- a plurality of elastic members disposed between the sheet portion and the second nonwoven fabric sheet portion, wherein the elastic members are spaced apart from each other in a second direction orthogonal to the first direction.
- the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion are joined to each other by an adhesive applied to the elastic member, and a pressure of 3 gf / cm 2 is applied to the composite stretchable material in the thickness direction in a stretched state of 50%.
- a composite stretchable material having a thickness when applied of 2.0 mm or less and a root mean square height of a cross-sectional curve in a 50% stretched state is 0.4 mm or less is provided.
- a composite stretchable material that is stretchable in a first direction, the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion that are superimposed on each other, and the first nonwoven fabric.
- a plurality of elastic members disposed between the sheet portion and the second nonwoven fabric sheet portion, wherein the elastic members are spaced apart from each other in a second direction orthogonal to the first direction.
- the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion are joined to each other by an adhesive applied to the elastic member, and the variation coefficient of the length of the cross-sectional curve element in the 50% stretched state is 0.2 or less.
- the composite elastic material which can be expanded-contracted in a 1st direction, Comprising: The 1st nonwoven fabric sheet part and the 2nd nonwoven fabric sheet part which were mutually piled up, and a 1st nonwoven fabric A plurality of elastic members disposed between the sheet portion and the second nonwoven fabric sheet portion, wherein the elastic members are spaced apart from each other in a second direction orthogonal to the first direction.
- a composite stretchable material is provided in which the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion are joined to each other by an adhesive applied to the elastic member, and the heat retention rate in a 50% stretched state is 40% or less. Is done.
- a composite stretchable material that is stretchable in a first direction, the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion overlapped with each other, and the first nonwoven fabric.
- a plurality of elastic members disposed between the sheet portion and the second nonwoven fabric sheet portion, wherein the elastic members are spaced apart from each other in a second direction orthogonal to the first direction.
- the first nonwoven sheet portion and the second nonwoven sheet portion are joined together by an adhesive applied to the elastic member, and the density of the cross-sectional curve elements in the 50% stretched state is 8 to 15 pieces / cm,
- a composite stretch material is provided.
- a composite stretchable material that is stretchable in the first direction, the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion overlapped with each other, and the first nonwoven fabric.
- a plurality of elastic members disposed between the sheet portion and the second nonwoven fabric sheet portion, wherein the elastic members are spaced apart from each other in a second direction orthogonal to the first direction.
- the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion are bonded to each other by an adhesive applied to the elastic member, and a load applied to the composite stretchable material in a 50% stretched state is 0.5 gf / cm.
- the composite stretchable material When the composite stretchable material is compressed in the thickness direction so as to vary from 2 to 50 gf / cm 2, the average compression pressure is less than 15 gf / cm 2 and the root mean square height of the cross-sectional curve in the 50% stretched state is 0. mm or less, the composite elastic material is provided.
- a composite stretchable material having a smaller thickness and more uniform wrinkles can be provided.
- FIG. 2 is a cross-sectional view taken along line II-II in FIG. It is a partial disassembled perspective view of a composite elastic material. It is a partial section perspective view of a composite elastic material. It is a fragmentary sectional view of a composite elastic material. It is a partial expanded view of a composite elastic material. It is the schematic of a shaping apparatus. It is a schematic sectional drawing of the uneven
- FIG. 6 is a perspective view of Comparative Example 1.
- FIG. It is a diagram which shows a measurement result. It is a diagram which shows a measurement result. It is a diagram which shows a measurement result. It is a diagram which shows a measurement result. It is a diagram which shows a measurement result.
- FIG. 1 and 2 show a composite stretchable material 1 according to an embodiment of the present invention.
- This composite stretchable material 1 is used to manufacture absorbent articles such as paper diapers and sanitary napkins.
- the composite stretchable material 1 is used for a member that touches or is visually recognized on the wearer's skin when worn, such as a waistline member positioned around the wearer's waistline.
- the composite stretchable material 1 has a sheet shape extending in a first direction D1 and a second direction D2 orthogonal to the first direction D1.
- the composite stretchable material 1 is stretchable in the first direction D1, and therefore the first direction D1 corresponds to the stretch direction of the composite stretchable material 1.
- FIG. 1 shows a state in which the composite stretchable material 1 is stretched in the first direction D1.
- the composite stretchable material 1 is disposed between the first nonwoven fabric sheet portion 2A and the second nonwoven fabric sheet portion 2B, and the first nonwoven fabric sheet portion 2A and the second nonwoven fabric sheet portion 2B, which are overlapped with each other.
- a plurality of, for example, four elastic members 3 are provided.
- the elastic members 3 extend in the first direction D1 while being spaced apart from each other at equal intervals in the second direction D2.
- Each of the first nonwoven fabric sheet portion 2A and the second nonwoven fabric sheet portion 2B includes a plurality of concave and convex regions 5A and 5B, and at least one non-concave portion that separates the concave and convex regions 5A and 5B from each other in the second direction D2. Regions 4A and 4B are provided. In the embodiment shown in FIGS. 1 and 2, three uneven regions 5A and 5B and four non-recessed regions 4A and 4B are provided.
- the length L4 in the second direction D2 of the non-concave areas 4A and 4B is, for example, about 1 mm
- the length L5 in the second direction D2 of the uneven areas 5A, 5B is, for example, about 4 mm.
- the uneven region 5A of the first nonwoven sheet portion 2A includes convex portions 6A and concave portions 7A that are alternately repeated in the first direction D1 and are continuous in the second direction D2.
- Each of the convex portions 6A protrudes from the non-concave region 4A in the thickness direction DT.
- Each of the concave portions 7A reaches the non-concave region 4A between two adjacent convex portions 6A.
- the non-concave region 4A does not include a convex portion and a concave portion.
- the non-concave area 4A is located on one side of the first nonwoven sheet portion 2A, in the embodiment shown in FIG. 3, and the uneven area 5A is on the other side of the first nonwoven sheet portion 2A, FIG. In the embodiment shown, it is located on the lower side.
- the uneven region 5B of the second nonwoven fabric sheet portion 2B includes convex portions 6B and concave portions 7B that are alternately repeated in the first direction D1 and are continuous in the second direction D2.
- Each of the convex portions 6B protrudes from the non-concave region 4B in the thickness direction DT.
- Each of the concave portions 7B reaches the non-concave region 4B between two adjacent convex portions 6B.
- the non-concave region 4B does not include a convex portion and a concave portion.
- the non-concave area 4B is located on one side of the second nonwoven sheet portion 2B, in the embodiment shown in FIG. 3, and the uneven area 5B is on the other side of the second nonwoven sheet portion 2B, FIG. In the embodiment shown, it is located on the upper side.
- a reference surface is not necessarily a flat surface.
- the first nonwoven sheet portion 2A and the second nonwoven sheet so that the uneven regions 5A and 5B are adjacent to each other and the non-recessed regions 4A and 4B are separated from each other. Portions 2B are overlaid.
- the uneven regions 5A and 5B are aligned with each other, and the non-recessed regions 4A and 4B are aligned with each other.
- the convex portion 6A of the first nonwoven fabric sheet portion 2A is opposed to the concave portion 7B of the second nonwoven fabric sheet portion 2B, and the convex portion 6B of the second nonwoven fabric sheet portion 2B is the first It faces the recess 7A of the nonwoven fabric sheet portion 2A.
- the convex portion 6A of the first nonwoven fabric sheet portion 2A enters the concave portion 7B of the second nonwoven fabric sheet portion 2B
- at least a portion of the convex portion 6B of the second nonwoven fabric sheet portion 2B is the first. 1 of the non-woven fabric sheet portion 2A enters the recess 7A.
- the non-concave regions 4A and 4B are separated from each other in the thickness direction DT. Accordingly, as shown in FIG. 5, a space SP is formed between the non-concave regions 4A and 4B facing each other, and the elastic member 3 is arranged in the space SP.
- An adhesive 8 is applied in advance to the peripheral surface of the elastic member 3, and the first nonwoven fabric sheet portion 2 ⁇ / b> A and the second nonwoven fabric sheet portion 2 ⁇ / b> B are joined to each other by the adhesive 8. In another embodiment, the adhesive 8 is partially applied to the peripheral surface of the elastic member 3.
- the first nonwoven sheet portion 2A and the second nonwoven sheet portion 2B are indirectly joined to each other by the elastic member 3. Further, there is no adhesive in the uneven regions 5A and 5B, and therefore the first nonwoven sheet portion 2A and the second nonwoven sheet portion 2B are not directly joined to each other. If it does in this way, it will suppress that the softness
- the composite stretchable material 1 is given stretchability in the first direction D1.
- the composite stretchable material 1 is formed with a large number of wrinkles that are continuous in the second direction D2 due to the convex portions 6A and 6B and the concave portions 7A and 7B.
- the first nonwoven fabric sheet portion 2A and the second nonwoven fabric sheet portion 2B in the non-concave regions 4A and 4B each include a portion that is not joined to the elastic member 3. In this case, when the composite stretchable material 1 is contracted, the portion may be lifted.
- the first nonwoven sheet portion 2A and the second nonwoven sheet portion 2B are provided. Compared with the inner surface of the nonwoven fabric sheet portion 2B, that is, the surface facing the elastic member 3, the fibers constituting the nonwoven fabric sheet are relatively free.
- the fibers on the outer surface may float.
- a ridge extending from one uneven region 5A, 5B across the non-recessed region 4A, 4B to another uneven region 5A, 5B is formed.
- the diameter of the elastic member 3 is preferably slightly smaller than the height HSP of the space SP. This is because if the diameter of the elastic member 3 is larger than the height HSP, the elastic member 3 or the cured adhesive 8 protrudes in the thickness direction DT in the non-recessed regions 4A and 4B, which may give the wearer a sense of incongruity.
- the first nonwoven fabric sheet portion 2 ⁇ / b> A and the second nonwoven fabric sheet portion 2 ⁇ / b> B are formed in the same nonwoven fabric sheet 10. That is, the nonwoven fabric sheet 10 has a fold line FL extending in the first direction D1, the first nonwoven sheet portion 2A is formed on one side of the fold line FL, and the second line on the other side of the fold line FL. Nonwoven fabric sheet portion 2B is formed.
- the non-concave areas 4A and 4B of the first nonwoven sheet portion 2A and the second nonwoven sheet portion 2B adjacent to the folding line FL are referred to as the innermost non-recessed areas 4Ain and 4Bin, these innermost non-recessed areas 4Ain and 4Bin. Are connected to each other.
- non-concave area 4A of the first nonwoven fabric sheet portion 2A and the non-concave area 4B of the second nonwoven fabric sheet portion 2B are located on the same surface of the nonwoven fabric sheet 10, in the lower surface side in the embodiment shown in FIG. is doing.
- uneven area 5A of the first nonwoven fabric sheet portion 2A and the uneven area 5B of the second nonwoven fabric sheet portion 2B are located on the same surface of the nonwoven fabric sheet 10, in the embodiment shown in FIG. is doing.
- the non-concave areas 4A and 4 and the uneven areas 5A and 5B are formed by a shaping device 20 as shown in FIG.
- the shaping device 20 includes a pair of continuous gear rolls 21 and a partless gear roll 22 that are rotatable around rotation axes 21A and 22A parallel to each other in opposite directions and meshing with each other.
- the continuous gear roll 21 includes a plurality of teeth 21T extending continuously along the rotation axis 21A.
- the toothless gear roll 22 includes a plurality of teeth 22T extending discontinuously along the rotation axis 22A. That is, the teeth 22T are separated from each other in the direction of the rotation axis 22A by the missing tooth portion 22TL.
- An unshaped nonwoven fabric sheet 10N is passed between the continuous gear roll 21 and the missing gear roll 22.
- the conveyance direction MD of the nonwoven fabric sheet 10N corresponds to the first direction D1
- the rotation axes 21A and 22A directions of the continuous gear roll 21 and the non-tooth gear roll 22 correspond to the second direction D2.
- the nonwoven fabric sheet 10N is partially stretched along the first direction D1, that is, shaped.
- the convex portions 6A and 6B and the concave portions 7A and 7B are alternately and repeatedly formed. That is, the uneven regions 5A and 5B are formed.
- the convex portions and the concave portions are not formed, and therefore the non-concave regions 4A and 4B are formed.
- the 1st nonwoven fabric sheet part 2A and the 2nd nonwoven fabric sheet part 2B can be formed simultaneously by the shaping process once.
- the first nonwoven sheet portion 2A and the second nonwoven sheet portion 2B are formed in separate nonwoven sheets and overlap each other.
- the elastic member 3 is attached to the nonwoven fabric sheet 10 while the nonwoven fabric sheet 10 is being conveyed.
- the elastic member 3 to which the adhesive 8 has been applied in advance is disposed in the stretched state, for example, in the non-recessed region 4B of the second nonwoven fabric sheet portion 2B.
- the sticking magnification of the elastic member 3 (the length in the stretched state of the elastic member 3 attached to the nonwoven fabric sheet 10 having the unit length in the conveying direction MD / the length in the natural state of the elastic member 3) is, for example, 3 Is set.
- the composite stretchable material 1 is pressed in the thickness direction DT by, for example, a press roller.
- the convex portion 6A of the first nonwoven fabric sheet portion 2A enters the concave portion 7B of the second nonwoven fabric sheet portion 2B
- at least a portion of the convex portion 6B of the second nonwoven fabric sheet portion 2B is the first. 1 of the non-woven fabric sheet portion 2A enters the recess 7A.
- the first nonwoven fabric sheet portion 2A and the second nonwoven fabric sheet portion 2B are joined to each other by the adhesive 8 (FIG. 5) applied to the elastic member 3. In this way, the composite stretchable material 1 is formed.
- the convex portion 6A of the first nonwoven fabric sheet portion 2A faces the concave portion 7B of the second nonwoven fabric sheet portion 2B and the second nonwoven fabric sheet portion.
- One of the first nonwoven fabric sheet portion 2A and the second nonwoven fabric sheet portion 2B is in the first direction D1 so that the convex portion 6B of 2B faces the recess 7A of the first nonwoven fabric sheet portion 2A. Moved slightly. This movement can be obtained, for example, by making the tensions of the first nonwoven fabric sheet portion 2A and the second nonwoven fabric sheet portion 2B different during conveyance.
- the convex portion 6A of the first nonwoven fabric sheet portion 2A enters the concave portion 7B of the second nonwoven fabric sheet portion 2B, and the convex portion 6B of the second nonwoven fabric sheet portion 2B is the first nonwoven fabric sheet portion 2A.
- the pitch PP of the convex portions 6A, 6B or the concave portions 7A, 7B in the composite stretchable material 1 in a contracted state or in a natural state is set to four nonwoven fabric sheet portions. It is necessary to set more than the thickness.
- the shaping process that is, the state of the nonwoven fabric sheet 10 before the elastic member 3 is attached
- the first nonwoven fabric when the composite stretchable material 1 is extended to the maximum in the first direction D1. This corresponds to the state of the sheet portion 2A and the second nonwoven sheet portion 2B. Therefore, when the maximum expansion ratio in the first direction of the composite stretchable material 1 is expressed by ERM, the pitch PP0 of the convex portions 6A and 6B or the concave portions 7A and 7B in the nonwoven fabric sheet 10 before the elastic member 3 is attached is PP. -Represented by ERM.
- the thickness of the nonwoven fabric sheet 10 before the shaping treatment is tS0
- the stretching ratio of the shaping device 20 is expressed by DR
- the thickness tS of the nonwoven fabric sheet 10 after the shaping process is expressed by tS0 / DR.
- the pitch PP0 needs to satisfy the following formula (1).
- the pitch PP0 is determined from tS0, DR, ERM set in advance so as to satisfy the expression (1).
- the first nonwoven sheet portion 2A and the second nonwoven sheet portion 2B are formed from a spunbond nonwoven fabric having a basis weight of 17 g / m 2 .
- the first nonwoven sheet portion 2A and the second nonwoven sheet portion 2B include, for example, a meltblown nonwoven fabric, an SMS nonwoven fabric combining a spunbond nonwoven fabric and a meltblown nonwoven fabric, a heat roll nonwoven fabric, an air-through nonwoven fabric, and a spunlace. It is formed from a nonwoven fabric, an airlaid nonwoven fabric, or the like.
- the nonwoven fabric is formed from polyethylene, polypropylene, polyester, acrylic or the like.
- the elastic member 3 is formed of Lycra (registered trademark) having a fineness of 470 dtex. In another embodiment, it is formed from synthetic rubber such as styrene-butadiene, butadiene, isoprene, neoprene, natural rubber, EVA, SIS, SEBS, SEPS, stretchable polyolefin, polyurethane, and the like.
- the fineness of the elastic member 3 is preferably 30 to 1500 dtex. In another embodiment, one or both of the material and the fineness of the elastic member 3 are different from each other.
- the non-recessed regions 4A and 4B are formed at equal intervals in the second direction D2, and therefore the elastic members 3 are arranged at equal intervals in the second direction D2. .
- the non-convex regions 4A and 4B are formed at unequal intervals in the second direction D2, and the elastic members 3 are arranged at unequal intervals in the second direction D2.
- FIG. 9 shows another embodiment according to the present invention.
- the composite stretchable material 1 is formed from the nonwoven fabric sheet 10 shown in FIG.
- the first nonwoven fabric sheet portion 2A and the second nonwoven fabric sheet portion 2B are overlapped so that the uneven regions 5A and 5B are separated from each other and the non-recessed regions 4A and 4B are adjacent to each other.
- the uneven regions 5A and 5B are aligned with each other, and the non-recessed regions 4A and 4B are aligned with each other.
- the elastic members 3 are arranged at equal intervals in the second direction D2 between the first nonwoven fabric sheet portion 2A and the second nonwoven fabric sheet portion 2B, and the first nonwoven fabric sheet portion 2A and the second nonwoven fabric sheet.
- the portions 2B are joined to each other via the elastic member 3.
- the elastic member 3 is preferably disposed between the non-concave regions 4A and 4B.
- the first nonwoven fabric sheet portion 2A and the second nonwoven sheet portion 2A and the second nonwoven fabric portion 4A and the second non-concave regions 4A and 4B are not aligned with each other.
- the nonwoven fabric sheet portion 2B is overlaid.
- the elastic members 3 are arranged at unequal intervals in the second direction D2.
- the composite stretchable material according to the first aspect of the present invention is a composite stretchable material that can stretch in the first direction, and the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion that are overlapped with each other, A plurality of elastic members disposed between the one nonwoven fabric sheet portion and the second nonwoven fabric sheet portion, wherein the elastic members are separated from each other in a second direction orthogonal to the first direction.
- the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion are joined to each other by an adhesive applied to the elastic member.
- the composite stretchable material according to the second aspect of the present invention has a thickness t of 2. when a pressure of 3 gf / cm 2 (0.3 kPa) is applied in the thickness direction to the composite stretchable material in a 50% stretched state.
- the root-mean-square height Pq of the cross-sectional curve in the 50% stretched state is 0.4 mm or less.
- the coefficient of variation CV of the length of the cross-sectional curve element in the 50% stretched state is 0.2 or less.
- Composite elastic material according to the second aspect of the present invention further, the load applied to the composite elastic material is from 0.5 gf / cm 2 (0.05 kPa) at 50% elongation state until 50gf / cm 2 (5kPa)
- the average compression pressure CP when the composite stretchable material is compressed in the thickness direction so as to change is preferably less than 15 gf / cm 2 (1.5 kPa).
- the composite stretchable material according to the second aspect of the present invention preferably further has a heat retention ratio HR of 40% or less in a 50% stretched state.
- the density D of the cross-sectional curve elements in the 50% stretched state is 8 to 15 pieces / cm.
- the 50% stretched state is a state where the composite stretchable material is stretched in the stretch direction so that the stretch rate is 50%.
- LM Stretching direction length of the stretched composite stretchable material portion
- LM0 Stretching direction length of the composite stretchable material portion in the natural state
- the thickness t is measured by a thickness measuring instrument.
- the root mean square height Pq of the cross-sectional curve is obtained as follows. That is, first, a cross-sectional curve along the stretch direction in the uneven region of the composite stretchable material is measured by the shape measuring instrument. The cross-sectional shape is preferably measured approximately at the center between two adjacent elastic members. Next, the height Z (x) of the sectional curve element at the reference length is obtained from the sectional curve (see FIG. 10). Next, the root mean square height Pq of the cross-section curve is calculated from the height Z (x) of the cross-section curve element (see JIS B0601: 2001 (ISO 4287: 1997), JIS B0651: 2001 (ISO 3274: 1996)). The x-axis direction corresponds to the expansion / contraction direction.
- the root mean square height Pq of the cross-section curve represents the uniformity of wrinkles formed on the composite stretchable material. Specifically, as the root mean square height Pq decreases, the wrinkles become smaller and more uniform. Therefore, when the thickness t is 2.0 mm or less and the root mean square height Pq is 0.4 mm or less, a composite stretchable material having a smaller thickness and a more uniform wrinkle is provided. When the thickness is smaller, the heat retaining function of the composite stretchable material is lowered, and stuffiness or skin trouble is suppressed. In addition, the flexibility of the composite stretchable material is increased. On the other hand, when the wrinkles are more uniform, the touch and aesthetics of the composite stretchable material are improved. Moreover, the uniformity of the characteristics of the composite stretchable material such as tactile sensation and flexibility is further improved.
- the length Xs of the cross-sectional curve element represents the interval or size of the folds of the composite stretchable material
- the variation coefficient CV of the length Xs represents the uniformity of the folds. Specifically, wrinkles become more uniform as the coefficient of variation CV decreases. Therefore, when the coefficient of variation CV is 0.2 or less, a composite stretchable material with more uniform wrinkles is provided. In other words, a composite stretch material having better tactile sensation and aesthetics is provided. Moreover, the uniformity of the characteristics of the composite stretchable material such as tactile sensation and flexibility is further improved.
- the average compression pressure CP represents the flexibility of the composite stretchable material. Specifically, the flexibility of the composite stretchable material improves as the average compression pressure CP decreases. Therefore, when the average compression pressure CP is less than 15 gf / cm 2 , a composite stretchable material having better flexibility is provided. Further, when the average compression pressure CP is less than 15 gf / cm 2 and the root mean square height Pq is 0.4 mm or less, more excellent flexibility can be obtained uniformly.
- the heat retention rate HR is 40% or less, the body surface temperature of the wearer is kept low, and stuffiness or skin troubles are suppressed.
- the density D of the cross-sectional curve element represents the size or uniformity of wrinkles formed in the composite stretchable material. Specifically, as the density D increases, the wrinkles become smaller and more uniform. Therefore, when the density D is 8 to 15 pieces / cm, a composite stretchable material with more uniform wrinkles is provided. In other words, a composite stretch material having better tactile sensation and aesthetics is provided. Moreover, the uniformity of the characteristics of the composite stretchable material such as tactile sensation and flexibility is further improved. In addition, since the wrinkles are not excessively small, it is easy to produce a composite stretchable material.
- the coefficient of variation CV of the length Xs of the cross-sectional curve element is 0.2 or less.
- the composite stretchable material according to the third aspect of the present invention preferably further has a root mean square height Pq of 0.4 mm or less.
- the composite stretchable material according to the fourth aspect of the present invention has a heat retention rate HR of 40% or less.
- the composite stretchable material according to the fourth aspect of the present invention preferably further has a thickness t of 2.0 mm or less.
- the composite stretchable material according to the fifth aspect of the present invention has a density D of 8 to 15 pieces / cm.
- the composite stretchable material according to the fifth aspect of the present invention preferably further has a root mean square height Pq of 0.4 mm or less.
- Composite elastic material changes the load applied to the composite stretch material from 0.5gf / cm 2 (0.05kPa) at 50% elongation state until 50gf / cm 2 (5kPa)
- the average compression pressure CP is less than 15 gf / cm 2 (1.5 kPa)
- the root mean square height Pq of the cross-sectional curve in the 50% stretched state is 0. 4 mm or less.
- the composite stretchable material according to the sixth aspect of the present invention further has a thickness t of 2.0 mm when a pressure of 3 gf / cm 2 (0.3 kPa) is applied in the thickness direction to the composite stretchable material in a 50% stretched state. It is preferable that:
- the coefficient of variation CV of the length of the cross-sectional curve element in the 50% stretched state is 0.2 or less.
- the composite stretchable material according to the sixth aspect of the present invention preferably further has a heat retention rate HR of 40% or less in a 50% stretched state.
- the density D of the cross-sectional curve elements in the 50% stretched state is 8 to 15 pieces / cm.
- Example 1 to 9 were made according to Table 1.
- Examples 1 to 8 have a configuration corresponding to the embodiment shown in FIGS. 1 to 5, and Example 9 has a configuration corresponding to the embodiment shown in FIG. 9.
- Comparative Example 1 was produced according to Table 1. Comparative Example 1 had a configuration corresponding to the composite stretchable material described in Patent Document 1 described above. That is, as shown in FIG. 13, the comparative example 1 includes a first non-woven fabric sheet portion 2 ⁇ / b> A ′ and a second non-woven fabric sheet portion 2 ⁇ / b> B ′ that are overlapped with each other and the first non-woven fabric sheet. A plurality of elastic members 3 ′ arranged between the portion 2A ′ and the second nonwoven sheet portion 2B ′ were provided.
- 1st nonwoven fabric sheet part 2A 'and 2nd nonwoven fabric sheet part 2B' are the junction parts 8 each provided discontinuously in the 1st direction D1 and the 2nd direction D2 orthogonal to a 1st direction. 'Were joined together.
- the elastic member 3 ′ extends in the first direction D1 while being separated from each other in the second direction D2 without passing through the joint portion 8 ′, and at the first ends E ′ in the first direction of the composite stretchable material.
- the non-woven fabric sheet portion 2A ′ and the second non-woven fabric sheet portion 2B ′ were fixed.
- Comparative Example 2 Comparative Example 2 was made according to Table 1.
- the comparative example 2 is arranged between the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion that are overlapped with each other and are not shaped, and between the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion.
- a plurality of elastic members An adhesive was applied to the peripheral surface of the elastic member, and the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion were fixed to each other via the elastic member.
- the thickness t was measured by a thickness measuring device FS-60DS manufactured by Daiei Scientific Instruments.
- the pressure plate area was 20 cm 2 (circular), and the measurement load was 3 gf / cm 2 (0.3 kPa). Measurements were performed 10 times on a sample of composite stretchable material (width 120 mm x length 1000 mm). The arithmetic average of the measured data was obtained, and the thickness t was obtained.
- the cross-sectional curve was measured by a shape measurement system KS-1100 manufactured by Keyence Corporation, a laser sensor LK-G30 (spot diameter 30 ⁇ m), and a controller LK-GD500.
- the measurement range was 0 to 30000 ⁇ m
- the measurement pitch was 5 ⁇ m
- the number of measurement points was 6001
- the stylus movement direction was the expansion / contraction direction
- the stylus movement speed was 50 ⁇ m / sec.
- a test piece to be described later was prepared from a sample (width 120 mm ⁇ length 200 mm). Measurements were then made on the test specimen. A moving average of ⁇ 12 was performed once, and cross-sectional curve data was obtained. Further, the root mean square height Pq, the arithmetic mean value PSm of the length Xs of the cross section curve element, the standard deviation ⁇ , the variation coefficient CV, and the density D of the cross section curve element were calculated from the cross section curve data.
- Specimens were prepared as follows. That is, as shown in FIG. 12A, a rectangular fixing jig 30 having an opening 30a was prepared. As shown in FIG. 12B, which is a cross-sectional view taken along line BB in FIG. 12A, hook tapes 31 were respectively attached to the two opposite sides 30b of the fixing jig 30. . Further, as shown in FIG. 12C, a pair of hook tapes 33 was attached to the table 32 at intervals of 200 mm. Further, as shown in FIG. 12D, a sample 34 (width 120 mm ⁇ length 200 mm) of a composite stretchable material was prepared, and marks 35 at intervals of 100 mm were attached to the sample 34 in the stretch direction.
- the sample 34 was uniformly extended in the expansion / contraction direction so that the interval between the marks 35 was 150 mm, and was affixed to the hook tape 33 on the table 32.
- the fixing jig 30 is arranged on the sample 34 so that the two sides 30b are orthogonal to the expansion / contraction direction of the sample 34, and the sample 34 is attached to the hook tape 31. It was.
- the sample 34 was peeled off from the hook tape 33 on the table 32, and the sample 34 was attached to the hook tape 31 so as to be wound around the two sides 30 b of the fixing jig 30.
- the sample 34 protruding from the fixing jig 30 was removed.
- a test piece 36 as shown in FIG. 12 (G) was formed. The measurement of the test piece 36 was performed on the composite stretchable material located in the opening 30 a of the fixing jig 30.
- the average compression pressure PC was measured by an automated compression tester KES-FB3-AUTO-A manufactured by Kato Tech Co., Ltd.
- the compression distance was from thickness T0 to thickness Tm
- the pressure plate area was 2 cm 2 (circular)
- the compression speed was 0.02 mm / second
- the amplifier setting was SENS2.
- a test piece was prepared from the sample (width 120 mm ⁇ length 200 mm) (see FIGS. 12A to 12G). The test piece was then measured three times. The arithmetic average of the measured data was determined, and the average compression pressure PC was obtained.
- the heat retention rate HR was measured by a precision rapid thermal property measuring device KES-F7-Thermo Lab II manufactured by Kato Tech Co., Ltd.
- the hot plate size was 10 cm ⁇ 10 cm.
- a test piece was prepared from the sample (width 120 mm ⁇ length 200 mm) (see FIGS. 12A to 12G). The test piece was then measured three times. The arithmetic average of the measured data was calculated
- FIGS. 16A and 16B show cross-sectional curves of Comparative Examples 1 and 2, respectively.
- FIG. 17A shows the relationship between the root mean square height Pq and the thickness t
- FIG. 17B shows the relationship between the root mean square height Pq and the coefficient of variation CV
- FIG. 17C shows the square
- FIG. 17D shows the relationship between the average square root height Pq and the average compression pressure CP
- FIG. 17D shows the relationship between the thickness t and the heat retention rate HR
- FIG. 17E shows the root mean square height Pq and the density of the cross-sectional curve elements.
- the relationship with D is shown respectively.
- ⁇ indicates Examples 1 to 4
- ⁇ indicates Examples 5 to 8
- ⁇ indicates Example 9
- ⁇ indicates Comparative Example 1
- Example 2 is shown respectively.
- Examples 1 to 9 were within the range defined by Pq ⁇ 0.4 (mm) and t ⁇ 2.0 (mm). On the other hand, Comparative Examples 1 and 2 were outside the range.
- Examples 1 to 8 were within the range defined by Pq ⁇ 0.4 (mm) and CV ⁇ 0.2.
- Comparative Examples 1 and 2 were outside the range.
- Examples 1 to 9 were within the range defined by Pq ⁇ 0.4 (mm) and CP ⁇ 15 (gf / cm 2 ). On the other hand, Comparative Examples 1 and 2 were outside the range.
- Examples 1 to 9 were within the range defined by t ⁇ 2.0 (mm) and HR ⁇ 40 (%). On the other hand, Comparative Examples 1 and 2 were outside the range.
- Examples 1 to 9 were within the range defined by Pq ⁇ 0.4 (mm) and 8 ⁇ D (pieces / cm) ⁇ 15.
- Comparative Examples 1 and 2 were outside the range.
- the present invention is defined as follows. (1) A composite stretchable material capable of stretching in a first direction, A first nonwoven sheet portion and a second nonwoven sheet portion superimposed on each other; A plurality of elastic members disposed between the first nonwoven sheet portion and the second nonwoven sheet portion; With The elastic members extend in the first direction while being separated from each other in a second direction orthogonal to the first direction, The first non-woven fabric sheet portion and the second non-woven fabric sheet portion are composite stretchable materials that are joined together by an adhesive applied to the elastic member.
- Each of the first nonwoven sheet portion and the second nonwoven sheet portion is A plurality of concave and convex regions comprising convex portions and concave portions that are alternately repeated along the first direction and are continuous in the second direction; At least one non-recessed region that separates these uneven regions from each other in the second direction; With Each convex part protrudes in the thickness direction from the non-concave area, Each of the recesses reaches a non-concave region between two adjacent protrusions.
- the composite stretchable material according to any one of (2) to (9).
- the composite stretchable material according to (1) which is less than 15 gf / cm 2 and has a root mean square height of a sectional curve in a 50% stretched state of 0.4 mm or less.
- Each of the first nonwoven sheet portion and the second nonwoven sheet portion is A plurality of concave and convex regions comprising convex portions and concave portions that are alternately repeated along the first direction and are continuous in the second direction; At least one non-recessed region that separates these uneven regions from each other in the second direction; With Each convex part protrudes in the thickness direction from the non-concave area, Each of the recesses reaches a non-concave region between two adjacent protrusions.
- the composite stretchable material according to any one of (12) to (15).
Abstract
Description
=4・(tS0/DR)・ERM (1)
伸長率(%)=(LM-LM0)/LM0・100
ここで、LM:伸長させた複合伸縮性材料部分の伸縮方向長さ
LM0:自然状態にある当該複合伸縮性材料部分の伸縮方向長さ
表1に従って実施例1から9が作製された。実施例1から8は図1から図5に示される実施形態に対応する構成を備え、実施例9は図9に示される実施形態に対応する構成を備えていた。
表1に従って比較例1が作製された。比較例1は上述の特許文献1に記載の複合伸縮性材料に対応する構成を備えていた。すなわち、比較例1は、図13に示されるように、互いに重ね合わされた、賦形処理されていない第1の不織布シート部分2A’及び第2の不織布シート部分2B’と、第1の不織布シート部分2A’と第2の不織布シート部分2B’との間に配置された複数の弾性部材3’とを備えていた。第1の不織布シート部分2A’及び第2の不織布シート部分2B’は、第1の方向D1と、第1の方向に直交する第2の方向D2とにそれぞれ不連続に設けられた接合部8’において互いに接合されていた。弾性部材3’は、接合部8’を通ることなく、第2の方向D2に互いに離間されつつ第1の方向D1に延びると共に、複合伸縮性材料の第1の方向の両端E’において第1の不織布シート部分2A’及び第2の不織布シート部分2B’に固定されていた。
表1に従って比較例2が作製された。比較例2は、互いに重ね合わされた、賦形処理されていない第1の不織布シート部分及び第2の不織布シート部分と、第1の不織布シート部分と第2の不織布シート部分との間に配置された複数の弾性部材とを備えていた。弾性部材の周面に接着剤が適用され、弾性部材を介して、第1の不織布シート部分及び第2の不織布シート部分が互いに固定されていた。
厚みtは、大栄科学精機製作所製の厚さ測定器FS-60DSにより測定された。加圧板面積は20cm2(円形)、測定荷重は3gf/cm2(0.3kPa)であった。複合伸縮性材料のサンプル(幅120mmx長さ1000mm)について、測定が10回行われた。測定したデータの算術平均が求められ、厚みtが得られた。
表2は測定結果を示している。
(1)第1の方向に伸縮可能な複合伸縮性材料であって、
互いに重ね合わされた第1の不織布シート部分及び第2の不織布シート部分と、
第1の不織布シート部分と第2の不織布シート部分との間に配置された複数の弾性部材と、
を備え、
弾性部材は、第1の方向に直交する第2の方向に互いに離間されつつ第1の方向に延び、
第1の不織布シート部分及び第2の不織布シート部分は、弾性部材に適用された接着剤により互いに接合される、複合伸縮性材料。
(2)50%伸長状態において複合伸縮性材料に3gf/cm2の圧力を厚み方向に印加したときの厚みが2.0mm以下であり、かつ
50%伸長状態における断面曲線の二乗平均平方根高さが0.4mm以下である、(1)に記載の複合伸縮性材料。
第1の方向に沿って交互に繰り返されると共に第2の方向に連続する凸部及び凹部を備える複数の凹凸領域と、
これら凹凸領域を第2の方向に互いに離間させる少なくとも1つの非凹凸領域と、
を備え、
凸部はそれぞれ、非凹凸領域から厚み方向に突出し、
凹部はそれぞれ、互いに隣接する2つの凸部同士の間で非凹凸領域まで到っている、
(2)から(9)までのいずれか一つに記載の複合伸縮性材料。
互いに整列された非凹凸領域同士間に弾性部材が配置される、
(10)に記載の複合伸縮性材料。
50%伸長状態における断面曲線の二乗平均平方根高さが0.4mm以下である、(1)に記載の複合伸縮性材料。
第1の方向に沿って交互に繰り返されると共に第2の方向に連続する凸部及び凹部を備える複数の凹凸領域と、
これら凹凸領域を第2の方向に互いに離間させる少なくとも1つの非凹凸領域と、
を備え、
凸部はそれぞれ、非凹凸領域から厚み方向に突出し、
凹部はそれぞれ、互いに隣接する2つの凸部同士の間で非凹凸領域まで到っている、
(12)から(15)までのいずれか一つに記載の複合伸縮性材料。
互いに整列された非凹凸領域同士間に弾性部材が配置される、
(16)に記載の複合伸縮性材料。
2A 第1の不織布シート部分
2B 第2の不織布シート部分
3 弾性部材
4A,4B 非凹凸領域
5A,5B 凹凸領域
6A,6B 凸部
7A,7B 凹部
8 接着剤
20 賦形装置
21 連続ギアロール
22 欠歯ギアロール
Claims (17)
- 第1の方向に伸縮可能な複合伸縮性材料であって、
互いに重ね合わされた第1の不織布シート部分及び第2の不織布シート部分と、
第1の不織布シート部分と第2の不織布シート部分との間に配置された複数の弾性部材と、
を備え、
弾性部材は、第1の方向に直交する第2の方向に互いに離間されつつ第1の方向に延び、
第1の不織布シート部分及び第2の不織布シート部分は、弾性部材に適用された接着剤により互いに接合される、複合伸縮性材料。 - 50%伸長状態において複合伸縮性材料に3gf/cm2の圧力を厚み方向に印加したときの厚みが2.0mm以下であり、かつ
50%伸長状態における断面曲線の二乗平均平方根高さが0.4mm以下である、
請求項1に記載の複合伸縮性材料。 - 更に、50%伸長状態における断面曲線要素の長さの変動係数が0.2以下である、請求項2に記載の複合伸縮性材料。
- 更に、50%伸長状態において複合伸縮性材料に印加される荷重が0.5gf/cm2から50gf/cm2まで変化するように複合伸縮性材料を厚み方向に圧縮したときの平均圧縮圧力が15gf/cm2未満である、請求項2又は3に記載の複合伸縮性材料。
- 更に、50%伸長状態における保温率が40%以下である、請求項2から4までのいずれか一項に記載の複合伸縮性材料。
- 更に、50%伸長状態における断面曲線要素の密度が8から15個/cmである、請求項2から5までのいずれか一項に記載の複合伸縮性材料。
- 50%伸長状態における断面曲線要素の長さの変動係数が0.2以下である、請求項1に記載の複合伸縮性材料。
- 50%伸長状態における保温率が40%以下である、請求項1に記載の複合伸縮性材料。
- 50%伸長状態における断面曲線要素の密度が8から15個/cmである、請求項1に記載の複合伸縮性材料。
- 第1の不織布シート部分及び第2の不織布シート部分がそれぞれ、
第1の方向に沿って交互に繰り返されると共に第2の方向に連続する凸部及び凹部を備える複数の凹凸領域と、
これら凹凸領域を第2の方向に互いに離間させる少なくとも1つの非凹凸領域と、
を備え、
凸部はそれぞれ、非凹凸領域から厚み方向に突出し、
凹部はそれぞれ、互いに隣接する2つの凸部同士の間で非凹凸領域まで到っている、
請求項2から9までのいずれか一項に記載の複合伸縮性材料。 - 凹凸領域同士が互いに隣接しかつ非凹凸領域同士が互いに離間するように、かつ第2の方向に関し凹凸領域同士及び非凹凸領域同士がそれぞれ互いに整列されるように、第1の不織布シート部分及び第2の不織布シート部分が重ね合わされ、
互いに整列された非凹凸領域同士間に弾性部材が配置される、
請求項10に記載の複合伸縮性材料。 - 50%伸長状態において複合伸縮性材料に印加される荷重が0.5gf/cm2から50gf/cm2まで変化するように複合伸縮性材料を厚み方向に圧縮したときの平均圧縮圧力が15gf/cm2未満であり、かつ
50%伸長状態における断面曲線の二乗平均平方根高さが0.4mm以下である、
請求項1に記載の複合伸縮性材料。 - 更に、50%伸長状態における断面曲線要素の長さの変動係数が0.2以下である、請求項12に記載の複合伸縮性材料。
- 更に、50%伸長状態における保温率が40%以下である、請求項12又は13に記載の複合伸縮性材料。
- 更に、50%伸長状態における断面曲線要素の密度が8から15個/cmである、請求項12から14までのいずれか一項に記載の複合伸縮性材料。
- 第1の不織布シート部分及び第2の不織布シート部分がそれぞれ、
第1の方向に沿って交互に繰り返されると共に第2の方向に連続する凸部及び凹部を備える複数の凹凸領域と、
これら凹凸領域を第2の方向に互いに離間させる少なくとも1つの非凹凸領域と、
を備え、
凸部はそれぞれ、非凹凸領域から厚み方向に突出し、
凹部はそれぞれ、互いに隣接する2つの凸部同士の間で非凹凸領域まで到っている、
請求項12から15までのいずれか一項に記載の複合伸縮性材料。 - 凹凸領域同士が互いに隣接しかつ非凹凸領域同士が互いに離間するように、かつ第2の方向に関し凹凸領域同士及び非凹凸領域同士がそれぞれ互いに整列されるように、第1の不織布シート部分及び第2の不織布シート部分が重ね合わされ、
互いに整列された非凹凸領域同士間に弾性部材が配置される、
請求項16に記載の複合伸縮性材料。
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US20150140278A1 (en) | 2015-05-21 |
US9463606B2 (en) | 2016-10-11 |
AU2013260616B2 (en) | 2016-03-24 |
KR102070473B1 (ko) | 2020-01-29 |
CN104271343B (zh) | 2017-02-22 |
AU2013260616A1 (en) | 2014-11-27 |
KR20150008107A (ko) | 2015-01-21 |
CN104271343A (zh) | 2015-01-07 |
EP2848400A4 (en) | 2015-12-09 |
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EP2848400B1 (en) | 2017-03-01 |
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