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WO2016167246A1 - Stratifié à expansion/contraction et produit comprenant celui-ci - Google Patents

Stratifié à expansion/contraction et produit comprenant celui-ci Download PDF

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Publication number
WO2016167246A1
WO2016167246A1 PCT/JP2016/061797 JP2016061797W WO2016167246A1 WO 2016167246 A1 WO2016167246 A1 WO 2016167246A1 JP 2016061797 W JP2016061797 W JP 2016061797W WO 2016167246 A1 WO2016167246 A1 WO 2016167246A1
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WO
WIPO (PCT)
Prior art keywords
layer
elastomer
stretchable laminate
laminate according
nonwoven fabric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/061797
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English (en)
Japanese (ja)
Inventor
翔 内田
公平 武田
宗重 中川
生島　伸祐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nitto Denko Corp
Original Assignee
Nitto Denko Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2016058093A external-priority patent/JP6718272B2/ja
Application filed by Nitto Denko Corp filed Critical Nitto Denko Corp
Priority to PL16780037.4T priority Critical patent/PL3284595T3/pl
Priority to EP16780037.4A priority patent/EP3284595B1/fr
Priority to US15/566,042 priority patent/US20180127620A1/en
Publication of WO2016167246A1 publication Critical patent/WO2016167246A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment

Definitions

  • the present invention relates to an elastic laminate and an article including the same.
  • an elastic laminate composed of two or more layers including an elastomer layer has been proposed.
  • an elastic laminate having a nonwoven fabric layer on at least one side of the elastomer layer has been proposed.
  • the elastomer layer and the nonwoven fabric layer are generally bonded to each other with an adhesive or a pressure-sensitive adhesive.
  • JP 2012-187857 A Japanese Patent No. 3830818
  • the present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a stretchable laminate composed of two or more layers including an elastomer layer, Delamination is unlikely to occur between adjacent layers, the generation of unique odors derived from adhesives and pressure-sensitive adhesives is suppressed, and obstruction of air permeability due to bonding between the elastomer layer and the adjacent layer is prevented. Furthermore, it is providing the stretchable laminated body which can be manufactured at lower cost than before. Moreover, it is providing the articles
  • the stretchable laminate of the present invention is An elastic laminate comprising two or more layers including an elastomer layer, The elastomer layer and its adjacent layer are directly laminated.
  • the elastomer layer and its adjacent layer contain the same kind of material.
  • the elastomer layer has a three-layer structure.
  • the three-layer structure has a layer in which two or more types of elastomers are blended as an intermediate layer, and a layer containing one type of elastomer of the same type as the elastomer contained in the intermediate layer as both surface layers. .
  • the elastomer layer has a thickness of 20 ⁇ m to 200 ⁇ m.
  • the elastomer layer has a thickness of 30 ⁇ m to 100 ⁇ m.
  • the elastomer layer contains an olefin elastomer.
  • the olefin elastomer includes an ⁇ -olefin elastomer.
  • the ⁇ -olefin elastomer includes at least one selected from ethylene elastomer, propylene elastomer, and 1-butene elastomer.
  • the elastomer layer and the adjacent layer are directly fusion-bonded.
  • the fusion bonding is an ultrasonic fusion bonding.
  • the adjacent layer is a nonwoven fabric layer.
  • the nonwoven fabric layer contains polyolefin fibers.
  • the polyolefin is polypropylene.
  • the basis weight of the nonwoven fabric constituting the nonwoven fabric layer is 150 gsm or less.
  • the nonwoven fabric has a basis weight of 50 gsm or less.
  • the nonwoven fabric has a basis weight of 10 gsm to 30 gsm.
  • the stretchable laminate of the present invention has a region C having a through hole.
  • the stretchable laminate of the present invention has a region A having no through hole at one end and a region B having no through hole at the other end.
  • a region C having a through hole is provided between A and the region B.
  • the article of the present invention includes the stretchable laminate of the present invention.
  • an elastic laminate comprising two or more layers including an elastomer layer, and delamination hardly occurs between the elastomer layer and its adjacent layer.
  • a stretchable laminate that suppresses the generation of a unique odor derived from the agent, prevents the air permeability from being impaired by joining the elastomer layer and its adjacent layer, and can be manufactured at a lower cost than in the past. Can be provided.
  • goods containing such a stretchable laminated body can be provided.
  • the stretchable laminate of the present invention is a stretchable laminate comprising two or more layers including an elastomer layer. If the stretchable laminate of the present invention is a stretchable laminate comprising two or more layers including an elastomer layer, it includes any other appropriate layer other than the elastomer layer as long as the effects of the present invention are not impaired. May be. Such any other appropriate layer may be only one layer or two or more layers.
  • the elastomer layer and the adjacent layer are directly laminated. That is, in the stretchable laminate of the present invention, the elastomer layer and its adjacent layer are directly connected between these two layers without any other layer such as an adhesive layer or an adhesive layer. It means that it is laminated.
  • the stretchable laminate of the present invention hardly causes delamination between the elastomer layer and the adjacent layer, and suppresses the generation of a unique odor derived from an adhesive or a pressure-sensitive adhesive. Further, it is possible to prevent the air permeability from being hindered due to the bonding between the elastomer layer and the adjacent layer, and it can be manufactured at a lower cost than in the past.
  • FIG. 1 is a schematic cross-sectional view of a stretchable laminate according to a preferred embodiment of the present invention.
  • the elastic laminate 100 shown in FIG. 1 has an elastomer layer 10 and a nonwoven fabric layer 20 provided only on one side of the elastomer layer 10.
  • the elastomer layer 10 and the nonwoven fabric layer 20 are directly laminated.
  • FIG. 2 is a schematic cross-sectional view of another stretchable laminate according to a preferred embodiment of the present invention.
  • the stretchable laminate 100 shown in FIG. 2 includes an elastomer layer 10, a nonwoven fabric layer 20a provided on one side of the elastomer layer 10, and a nonwoven fabric layer provided on the opposite side of the elastomer layer 10 to the nonwoven fabric layer 20a. 20b.
  • the elastomer layer 10 and the nonwoven fabric layer 20a are directly laminated.
  • the elastomer layer 10 and the nonwoven fabric layer 20b are directly laminated.
  • FIG. 3 is a schematic cross-sectional view of still another stretchable laminate according to a preferred embodiment of the present invention.
  • the stretchable laminate 100 shown in FIG. 3 includes an elastomer layer 10, a nonwoven fabric layer 20a provided on one side of the elastomer layer 10, and a nonwoven fabric layer provided on the opposite side of the elastomer layer 10 to the nonwoven fabric layer 20a. 20b and a region C having a through hole 30.
  • FIG. 4 is a schematic plan view of the stretchable laminate 100 shown in FIG.
  • the stretchable laminate 100 shown in FIG. 4 has a region C having through holes 30.
  • the stretchable laminate of the present invention can exhibit better air permeability in the region C by having a through hole in the region C.
  • FIG. 5 is a schematic cross-sectional view of still another stretchable laminate according to a preferred embodiment of the present invention.
  • the stretchable laminate 100 shown in FIG. 5 includes an elastomer layer 10, a nonwoven fabric layer 20a provided on one side of the elastomer layer 10, and a nonwoven fabric layer provided on the opposite side of the elastomer layer 10 to the nonwoven fabric layer 20a. 20b, a region A having no through hole at one end, a region B having no through hole at the other end, and between the region A and the region B, A region C having a through hole 30 is provided.
  • FIG. 6 is a schematic plan view of the stretchable laminate 100 shown in FIG.
  • the stretchable laminate 100 shown in FIG. 6 has a region A that does not have a through-hole at one end, a region B that does not have a through-hole at the other end, and the region A and the region Between B, a region C having a through hole 30 is provided.
  • the stretchable laminate as shown in FIGS. 5 and 6 has a region A that does not have a through hole at one end, and a region B that does not have a through hole at the other end.
  • a region C having a through hole is provided between A and the region B.
  • the stretchable laminate of the present invention can exhibit better air permeability in the region C by having a through hole in the region C.
  • the edge part of the stretchable laminated body of this invention can be strengthened more by having the area
  • the thickness of the stretchable laminate of the present invention depends on the thickness of the elastomer layer and the thickness of other layers such as a nonwoven fabric layer, but is preferably 1.0 mm to 0.1 mm, more preferably 0.8 mm. 0.15 mm, more preferably 0.6 mm to 0.15 mm, particularly preferably 0.5 mm to 0.2 mm, and most preferably 0.45 mm to 0.2 mm.
  • the thickness of the stretchable laminate of the present invention falls within such a range, it becomes easy to use as a member used for articles such as sanitary goods such as diapers and masks.
  • the elastomer layer and its adjacent layer are directly fusion-bonded, and more preferably, the fusion-bonding is ultrasonic fusion bonding.
  • the stretch laminate of the present invention is less likely to cause delamination between the elastomer layer and its adjacent layer,
  • the generation of unique odors derived from adhesives and pressure-sensitive adhesives can be further suppressed, and the inhibition of air permeability due to the bonding between the elastomer layer and its adjacent layer can be further prevented, and at a lower cost than in the past. Can be manufactured.
  • the elastomer layer and the adjacent layer thereof preferably contain the same type of material (for example, the polyolefin-based elastomer layer and the polyolefin-based adjacent layer), more preferably the same type of material.
  • the main component By using the same kind of material, delamination is less likely to occur between the elastomer layer and the adjacent layer.
  • any appropriate ultrasonic fusion bonding can be adopted as long as the effects of the present invention are not impaired.
  • a member to be bonded sends a vibration energy by ultrasonic waves and is generally called a “horn” and generally called an “anvil”. It is arranged between the rolled parts.
  • the horn is arranged vertically above the member to be joined and the anvil.
  • the horn normally vibrates at 20000 Hz to 40000 Hz, and transmits energy to the members to be joined under pressure, usually in the form of frictional heat. Due to frictional heat and pressure, a portion of at least one of the members to be welded softens or melts, thereby joining the materials.
  • Continuous ultrasonic fusion bonding is usually used for sealing members to be bonded that can be supplied into a bonding apparatus substantially continuously.
  • the horn is usually fixed, and the member to be bonded moves directly below.
  • One type of continuous ultrasonic fusion bonding uses a fixed horn and a rotating anvil surface. During continuous ultrasonic fusion bonding, the member to be bonded is pulled between the horn and the rotating anvil. The horn normally extends in the longitudinal direction toward the member to be joined, and the vibration moves to the material in the axial direction along the horn.
  • the horn is a rotary type, is cylindrical and rotates about the longitudinal axis. Input vibration is in the axial direction of the horn and output vibration is in the radial direction of the horn.
  • the horn is disposed proximate to the anvil, and the anvil can also usually rotate so that the members to be joined pass between the cylindrical surfaces at a linear velocity substantially equal to the tangential velocity of the cylindrical surfaces.
  • Ultrasonic fusion bonding is disclosed in, for example, JP 2008-526552 A, JP 2010-195044 A, JP 2013-231249 A, JP 2015-16294 A, US Pat. No. 5,976,316, and the like. The disclosure of which is incorporated herein by reference.
  • elastomer layer Any appropriate elastomer layer can be adopted as the elastomer layer as long as the effects of the present invention are not impaired.
  • the elastomer resin that is the main component of such an elastomer layer include olefin elastomers, styrene elastomers, vinyl chloride elastomers, urethane elastomers, ester elastomers, amide elastomers, and the like.
  • the content of the elastomer resin as a main component in the elastomer layer is preferably 50% by weight to 100% by weight, more preferably 70% by weight to 100% by weight, and still more preferably 90% by weight to 100% by weight. %, Particularly preferably 95% to 100% by weight, most preferably 98% to 100% by weight.
  • the elastomer layer can exhibit sufficient elastomer characteristics.
  • the elastomer layer may be one layer or two or more layers.
  • the elastomer layer has a three-layer structure, for example, a layer in which two or more kinds of elastomers are blended in the intermediate layer, and one type of elastomer of the same type as the elastomer contained in the intermediate layer is used in both surface layers.
  • a three-layer structure is preferred.
  • the elastomer resin as the main component in the elastomer layer is preferably an olefin-based elastomer.
  • an olefin-based elastomer as the elastomer resin, the thermal stability is improved as compared with other elastomer resins (for example, styrene-based elastomer).
  • elastomer resins for example, styrene-based elastomer
  • the storage stability is improved as compared with other elastomer resins (for example, styrene-based elastomer), and the physical properties during storage of the stretchable laminate of the present invention are improved. It becomes possible to suppress the fluctuation of the value.
  • the process for producing the elastomer layer can be simplified and the processing cost can be suppressed.
  • another elastomer resin for example, styrene elastomer
  • olefin-based elastomer When an olefin-based elastomer is employed as the elastomer resin, it is possible to perform extrusion molding by reducing the types of resins used in the production of the elastomer layer, and it may not be necessary to prepare a master batch.
  • the olefin-based elastomer when employed as the elastomer resin, the olefin-based elastomer may be a single type or a blend of two or more types.
  • olefin elastomers examples include olefin block copolymers, olefin random copolymers, ethylene copolymers, propylene copolymers, ethylene olefin block copolymers, propylene olefin block copolymers, ethylene olefin random copolymers, propylene olefin random copolymers, ethylene propylene random copolymers, ethylene (1 -Butene) random copolymer, ethylene (1-pentene) olefin block copolymer, ethylene (1-hexene) random copolymer, ethylene (1-heptene) olefin block copolymer, ethylene (1-octene) olefin block copolymer, ethylene (1-nonene) ) Olefin block copolymer, ethylene (1-decene) ole Block copolymer, propylene ethylene olefin block cop
  • the olefin-based elastomer may be employed as the elastomer resin, its density, preferably 0.890g / cm 3 ⁇ 0.830g / cm 3, more preferably 0.888g / cm 3 ⁇ 0. 835 g / cm 3 , more preferably 0.886 g / cm 3 to 0.835 g / cm 3 , particularly preferably 0.885 g / cm 3 to 0.840 g / cm 3 , and most preferably 0.8. 885 g / cm 3 to 0.845 g / cm 3 .
  • the olefin elastomer that can be used as the elastomer resin has an MFR at 230 ° C. of 2.16 kgf of preferably 1.0 g / 10 min to 25.0 g / 10 min, more preferably 2. 0 g / 10 min to 23.0 g / 10 min, more preferably 2.0 g / 10 min to 21.0 g / 10 min, particularly preferably 2.0 g / 10 min to 20.0 g / 10 min. And most preferably from 2.0 g / 10 min to 19.0 g / 10 min.
  • the olefin-based elastomer that can be employed as the elastomer resin is specifically preferably an ⁇ -olefin-based elastomer.
  • ⁇ -olefin elastomers more preferably at least one selected from ethylene elastomers, propylene elastomers, and 1-butene elastomers.
  • the thermal stability is further improved, for example, it is possible to further suppress thermal deterioration during film formation when the stretch laminate of the present invention is produced, and other elastomer resins (for example, styrene)
  • the storage stability is further improved as compared to the system elastomer), and it is possible to further suppress fluctuations in physical property values during storage of the stretchable laminate of the present invention. It is possible to further simplify and further reduce the processing cost.
  • ⁇ -olefin elastomers that can be employed as elastomer resins
  • ethylene elastomers and propylene elastomers are particularly preferable.
  • an ethylene-based elastomer or a propylene-based elastomer as an olefin-based elastomer
  • other elastomer resins for example, styrene-based elastomers
  • the thermal stability is further improved compared to, for example, it becomes possible to further suppress thermal degradation during film formation when producing the stretch laminate of the present invention, and other elastomer resins (for example, , Styrene-based elastomers), the storage stability is further improved, and it is possible to further suppress fluctuations in physical properties during storage of the stretchable laminate of the present invention.
  • the manufacturing process can be further simplified, and the processing cost can be further suppressed.
  • the ⁇ -olefin elastomer can be obtained as a commercial product.
  • commercially available products include some of “Tuffmer” (registered trademark) series (for example, Tuffmer PN-2070, Toughmer PN-3560, etc.) manufactured by Mitsui Chemicals, Inc., “ Some of the “Vistamaxx” (registered trademark) series (for example, Vistamax 3000, Vistamax 6202, Vistamax 7010, etc.).
  • the ⁇ -olefin-based elastomer that can be employed as the elastomer resin is preferably produced using a metallocene catalyst.
  • An ⁇ -olefin elastomer produced using a metallocene catalyst can provide an elastic laminate having a very good fit, and can be used in comparison with other elastomer resins (for example, styrene elastomer).
  • the thermal stability is further improved, and for example, it is possible to further suppress thermal degradation during film formation when the stretch laminate of the present invention is produced, and other elastomer resins (for example, styrene)
  • the storage stability is further improved as compared with the base elastomer), and it is possible to further suppress fluctuations in physical properties during storage of the stretchable laminate of the present invention.
  • the process can be further simplified, and the processing cost can be further suppressed.
  • the elastomer layer may contain any appropriate other component as long as the effects of the present invention are not impaired.
  • other components include other polymers, tackifiers, plasticizers, deterioration inhibitors, pigments, dyes, antioxidants, antistatic agents, lubricants, foaming agents, heat stabilizers, and light stabilizers.
  • An agent, an inorganic filler, an organic filler, etc. are mentioned. These may be only one type or two or more types.
  • the content of other components in the elastomer layer is preferably 10% by weight or less, more preferably 7% by weight or less, still more preferably 5% by weight or less, and particularly preferably 2% by weight or less. Most preferably, it is 1% by weight or less.
  • the thickness of the elastomer layer is preferably 20 ⁇ m to 200 ⁇ m, more preferably 30 ⁇ m to 160 ⁇ m, still more preferably 30 ⁇ m to 140 ⁇ m, particularly preferably 30 ⁇ m to 120 ⁇ m, and most preferably 30 ⁇ m to 100 ⁇ m.
  • the thickness of the elastomer layer is within such a range, it is possible to provide a stretchable laminate having better fit.
  • the stretchable laminate of the present invention comprises two or more layers including an elastomer layer, and preferably includes a nonwoven fabric layer as a layer other than the elastomer layer. More preferably, the adjacent layer of the elastomer layer is a nonwoven fabric layer.
  • any appropriate nonwoven fabric layer can be adopted as long as the effects of the present invention are not impaired. Only 1 type may be sufficient as the nonwoven fabric which comprises a nonwoven fabric layer, and 2 or more types may be sufficient as it.
  • nonwoven fabric constituting the nonwoven fabric layer examples include a spunbond nonwoven web, a fluffed nonwoven fabric (for example, a nonwoven fabric obtained by a thermal bond method, an adhesive bonding method, and a spunlace method), a melt blown nonwoven web, a spunlace nonwoven web, Spunbond meltblown spunbond nonwoven web, spunbond meltblown meltblown spunbond nonwoven web, non-bonded nonwoven web, electrospun nonwoven web, flashspun nonwoven web (eg DuPont TYVEKTM), carded nonwovens, etc. It is done.
  • a spunbond nonwoven web for example, a nonwoven fabric obtained by a thermal bond method, an adhesive bonding method, and a spunlace method
  • a melt blown nonwoven web for example, a nonwoven fabric obtained by a thermal bond method, an adhesive bonding method, and a spunlace method
  • melt blown nonwoven web for example, a nonwoven fabric obtained by a thermal bond method, an adhesive bonding method, and a spunlace method
  • the nonwoven fabric constituting the nonwoven fabric layer includes, for example, polyolefin fibers such as polypropylene, polyethylene, polyester, polyamide, polyurethane, elastomer, rayon, cellulose, acrylic, copolymers thereof, blends thereof, or mixtures thereof. Also good. Among these, the fiber of polyolefin, such as a polypropylene and polyethylene, is preferably included at the point which can exhibit the effect of this invention more.
  • the nonwoven fabric comprising the nonwoven layer may include fibers that are uniform structures, and may include two-component structures such as sheath / core, side-by-side, sea-island structures, and other two-component structures. .
  • two-component structures such as sheath / core, side-by-side, sea-island structures, and other two-component structures.
  • the basis weight of the nonwoven fabric constituting the nonwoven fabric layer is preferably 150 gsm or less, more preferably 100 gsm or less, still more preferably 50 gsm or less, and particularly preferably 10 gsm to 30 gsm.
  • a method for producing the stretchable laminate of the present invention as long as it is a method capable of producing a stretchable laminate in which the elastomer layer and its adjacent layer are directly laminated, the effects of the present invention are not impaired. Any suitable manufacturing method may be employed. As such a production method, preferably, the method described in detail above is a method in which the elastomer layer and its adjacent layer are directly fusion-bonded. More preferably, this fusion-bonding is performed by ultrasonic fusion. It is a junction.
  • the stretchable laminate of the present invention When the stretchable laminate of the present invention is a stretchable laminate as shown in FIGS. 3 and 4, it has a region C having a through hole.
  • the stretchable laminated body of the present invention having such a configuration preferably sends out ultrasonic waves from the horn so that vibration energy is applied intensively to a place where a through hole is to be formed when the region C is joined. To.
  • the stretchable laminate of the present invention is a stretchable laminate as shown in FIGS. 5 and 6, a region A having no through hole at one end and a through hole at the other end. A region B that does not exist is provided, and a region C having a through hole is provided between the region A and the region B.
  • the stretchable laminate of the present invention having such a configuration, preferably, when joining the region A and the region B, ultrasonic waves are sent out from the horn so that vibration energy is uniformly applied to the entire joint surface. At the same time, when the region C is joined, ultrasonic waves are sent out from the horn so that vibration energy is given intensively to the place where the through hole is to be formed.
  • the stretchable laminate of the present invention can be subjected to a treatment called pre-stretching or activation treatment after lamination.
  • a stretching process can be performed in the width direction of the stretchable laminate, or, for example, a process of mechanically breaking the fiber structure in a partial region of the nonwoven fabric layer can be performed. By performing such treatment, the stretchable laminate can be stretched with a smaller force.
  • the stretchable laminate of the present invention can be used for any appropriate article that can effectively use the effects of the present invention. That is, the article of the present invention includes the stretchable laminate of the present invention.
  • a typical example of such an article is a sanitary product. As such sanitary goods, a diaper (especially ear part of a disposable diaper), a supporter, a mask etc. are mentioned, for example.
  • ⁇ Delamination test> In the delamination test, the stretchable laminates obtained in Examples and Comparative Examples were evaluated as follows. The stretchable laminate was cut into a width of 30 mm and a length of 10 cm so that the film flow direction (MD) and the vertical direction (CD) were long sides. The obtained stretchable laminate is set on a tensile tester (manufactured by Shimadzu Corporation: AG-IS 50 kN) with a rubber plate so that the distance between chucks is 50 mm, and the tensile speed is 300 mm / min and the moving distance is 50 mm (100% elongation). Stopped.
  • a tensile tester manufactured by Shimadzu Corporation: AG-IS 50 kN
  • the stretchable laminate was taken out and the state of peeling (delamination) of the nonwoven fabric was confirmed.
  • the non-woven fabric peeled from the elastic film by 1 cm 2 or more was marked with x, and the others were marked with ⁇ .
  • an elastomer layer (hereinafter also referred to as an elastic film) was extruded using a two-type three-layer (A layer / B layer / A layer) extrusion T-die molding machine.
  • the extrusion temperature was carried out under the following conditions.
  • both sides of the elastic film shown in the examples and comparative examples and the hot-melt adhesive shown in the examples and comparative examples are striped (adhesive layer width: 1 mm, interval: 1 mm, applied)
  • a non-woven fabric applied in an amount of 8 g / m 2 ) was bonded to obtain an elastic laminate.
  • Olefin resin (ExxonMobil, product name: Vistamax 6202): 90 parts by weight and olefin resin (BOREALIS, product name: Borstar (registered trademark) FB2230, LLDPE): 10 parts by weight of the extruder A
  • olefin resin (ExxonMobil, product name: Vistamax 6202): 65 parts by weight
  • olefin resin (Mitsui Chemicals, product name: Toughmer PN-3560): 30 parts by weight
  • the elastic film (1) was extruded.
  • the elastic film (7) was extruded.
  • An elastic laminate (7) was obtained in the same manner as in Example 1 except that the elastic film (7) was used instead of the elastic film (1). The results
  • Example 8 Olefin-based resin (ExxonMobil, product name: PP9513): 100 parts by weight in the layer A of the extruder, Olefin-based resin (ExxonMobil, product name: Vistamax 6202): 65 parts by weight, Olefin-based resin (Mitsui Chemicals Co., Ltd., trade name: Tuffmer PN-3560): 30 parts by weight, white pigment (titanium oxide, manufactured by DuPont, trade name: Ti-Pure R103): 5 parts by weight blended with extruder B
  • the elastic film (8) of A layer / B layer / A layer 6 ⁇ m / 48 ⁇ m / 6 ⁇ m, total 60 ⁇ m was extruded.
  • An elastic laminate (8) was obtained in the same manner as in Example 1 except that the elastic film (8) was used in place of the elastic film (1). The results are shown in Table 1.
  • the elastic film (9) was extruded.
  • An elastic laminate (9) was obtained in the same manner as in Example 1 except that the elastic film (9) was used instead of the elastic film (1). The results are shown in Table 1.
  • SIS resin manufactured by ZEON CORPORATION, trade name: QUINTAC 3399
  • SIS resin manufactured by ZEON CORPORATION, trade name: quinac 3399
  • the white pigment titanium oxide, manufactured by DuPont, trade name: Ti-Pure R103
  • a layer / B layer / A layer 9 ⁇ m / 42 ⁇ m / 9 ⁇ m, A total of 60 ⁇ m elastic film (C2) was extruded.
  • the stretchable laminate of the present invention can be used for any appropriate article that can effectively use the effects of the present invention. That is, the article of the present invention includes the stretchable laminate of the present invention.
  • a typical example of such an article is a sanitary product. As such sanitary goods, a diaper (especially ear part of a disposable diaper), a supporter, a mask etc. are mentioned, for example.

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  • Laminated Bodies (AREA)

Abstract

[Problème] L'invention a pour objet de fournir un stratifié à expansion/contraction comprenant deux ou plusieurs couches qui comprennent des couches en élastomère, dans lequel un délaminage des couches ne se produit pas facilement entre les couches en élastomère et les couches adjacentes, l'odeur particulière provenant d'un agent adhésif ou d'un agent de liaison n'est pas dégagée, il est possible d'empêcher que la perméabilité à l'air soit affectée par la liaison des couches en élastomère et des couches adjacentes, et le stratifié à expansion/contraction peut être fabriqué à un coût inférieur à ce qui était possible par le passé. L'invention a pour objet d'obtenir un produit comprenant un tel stratifié à expansion/contraction. [Solution] Le stratifié à expansion/contraction selon l'invention comprend deux ou plusieurs couches qui comprennent des couches en élastomère, les couches en élastomère et les couches adjacentes étant directement stratifiées.
PCT/JP2016/061797 2015-04-15 2016-04-12 Stratifié à expansion/contraction et produit comprenant celui-ci Ceased WO2016167246A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL16780037.4T PL3284595T3 (pl) 2015-04-15 2016-04-12 Ekspandujący/kurczący się laminat i zawierający go produkt
EP16780037.4A EP3284595B1 (fr) 2015-04-15 2016-04-12 Stratifié à expansion/contraction et produit comprenant celui-ci
US15/566,042 US20180127620A1 (en) 2015-04-15 2016-04-12 Expanding/contracting laminate and product including same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2015082963 2015-04-15
JP2015-082963 2015-04-15
JP2016-058093 2016-03-23
JP2016058093A JP6718272B2 (ja) 2015-04-15 2016-03-23 伸縮性積層体およびそれを含む物品

Publications (1)

Publication Number Publication Date
WO2016167246A1 true WO2016167246A1 (fr) 2016-10-20

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PL (1) PL3284595T3 (fr)
WO (1) WO2016167246A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020183119A (ja) * 2019-04-26 2020-11-12 日東電工株式会社 伸縮性積層体、および、その製造方法
CN113370630A (zh) * 2021-04-28 2021-09-10 广州市兴世电子有限公司 口罩用弹性耳带材料的生产方法及设备

Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2008213284A (ja) * 2007-03-02 2008-09-18 Mitsui Chemicals Inc 不織布積層体
WO2014025849A1 (fr) * 2012-08-08 2014-02-13 3M Innovative Properties Company Procédé de réalisation de stratifiés de film extensibles
JP2014180461A (ja) * 2013-03-19 2014-09-29 Oji Holdings Corp 吸収性物品

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008213284A (ja) * 2007-03-02 2008-09-18 Mitsui Chemicals Inc 不織布積層体
WO2014025849A1 (fr) * 2012-08-08 2014-02-13 3M Innovative Properties Company Procédé de réalisation de stratifiés de film extensibles
JP2014180461A (ja) * 2013-03-19 2014-09-29 Oji Holdings Corp 吸収性物品

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020183119A (ja) * 2019-04-26 2020-11-12 日東電工株式会社 伸縮性積層体、および、その製造方法
CN113727840A (zh) * 2019-04-26 2021-11-30 日东电工株式会社 伸缩性层叠体及其制造方法
US20220212451A1 (en) * 2019-04-26 2022-07-07 Nitto Denko Corporation Stretchable laminate and method for manufacturing same
CN113370630A (zh) * 2021-04-28 2021-09-10 广州市兴世电子有限公司 口罩用弹性耳带材料的生产方法及设备

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