WO2016093302A1 - Elastic laminate and article containing same - Google Patents

Elastic laminate and article containing same Download PDF

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Publication number
WO2016093302A1
WO2016093302A1 PCT/JP2015/084623 JP2015084623W WO2016093302A1 WO 2016093302 A1 WO2016093302 A1 WO 2016093302A1 JP 2015084623 W JP2015084623 W JP 2015084623W WO 2016093302 A1 WO2016093302 A1 WO 2016093302A1
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WO
WIPO (PCT)
Prior art keywords
olefin
elastomer
layer
stretchable laminate
laminate according
Prior art date
Application number
PCT/JP2015/084623
Other languages
French (fr)
Japanese (ja)
Inventor
公平 武田
生島　伸祐
翔 内田
Original Assignee
日東電工株式会社
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 JP2015005165A external-priority patent/JP2016112877A/en
Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to RU2017124446A priority Critical patent/RU2017124446A/en
Priority to CN201580067738.2A priority patent/CN107000392A/en
Priority to KR1020177014118A priority patent/KR20170094154A/en
Priority to BR112017010925-5A priority patent/BR112017010925A2/en
Priority to EP15867891.2A priority patent/EP3231605B1/en
Priority to US15/526,100 priority patent/US20170313034A1/en
Priority to PL15867891T priority patent/PL3231605T3/en
Publication of WO2016093302A1 publication Critical patent/WO2016093302A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • 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
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin

Definitions

  • the present invention relates to an elastic laminate and an article including the same.
  • Articles such as sanitary goods such as diapers and masks generally do not like the appearance of being wet because of their use. That is, low glossiness is required.
  • elastomeric resins for example, olefin-based elastomers and styrene-based elastomers
  • elastomeric resins for example, olefin-based elastomers and styrene-based elastomers
  • 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 having excellent low glossiness and excellent blocking resistance. Moreover, it is providing the articles
  • the stretchable laminate of the present invention is An elastic laminate having an olefinic resin layer on at least one side of the elastomer layer,
  • the stretchable laminate has a 60 ° gloss value of 10 or less.
  • the elastomer layer has the olefin resin layer on both sides.
  • the olefin resin layer is directly laminated on at least one side of the elastomer layer.
  • the stretch laminate of the present invention has a thickness of 10 ⁇ m to 500 ⁇ m.
  • the olefin resin layer contains a non-elastomeric olefin resin.
  • the content ratio of the non-elastomeric olefin resin in the olefin resin layer is 50% by weight to 100% by weight.
  • the content ratio of the non-elastomeric olefin resin in the olefin resin layer is 95% by weight to 100% by weight.
  • the non-elastomeric olefin resin contains an ⁇ -olefin homopolymer.
  • the ⁇ -olefin homopolymer is at least one selected from polyethylene and homopolypropylene.
  • the polyethylene is high density polyethylene.
  • the olefin resin layer has a thickness of 2 ⁇ m to 50 ⁇ m.
  • the olefin resin layer has a thickness of 2 ⁇ m to 8 ⁇ m.
  • the elastomer layer contains an olefin elastomer.
  • the content of the olefin-based elastomer in the elastomer layer is 50% by weight to 100% by weight.
  • the content of the olefin elastomer in the elastomer layer is 95% by weight to 100% by weight.
  • the olefin elastomer is an ⁇ -olefin elastomer.
  • the ⁇ -olefin elastomer is at least one selected from ethylene elastomer and propylene elastomer.
  • the ⁇ -olefin-based elastomer is produced using a metallocene catalyst.
  • the elastomer layer has a thickness of 8 ⁇ m to 450 ⁇ m.
  • the elastomer layer has a thickness of 8 ⁇ m to 67 ⁇ m.
  • the stretchable laminate is formed by pre-extension.
  • the stretch laminate of the present invention is used for sanitary goods.
  • the article of the present invention includes the stretchable laminate of the present invention.
  • the present invention it is possible to provide a stretchable laminate that is excellent in low gloss and excellent in blocking resistance. Moreover, the articles
  • the stretchable laminate of the present invention has an olefin resin layer on at least one side of the elastomer layer. That is, the stretchable laminate of the present invention may have an olefin resin layer only on one side of the elastomer layer, or may have an olefin resin layer on both sides of the elastomer layer. . When the stretchable laminate of the present invention has such a configuration, the stretchable laminate of the present invention can be excellent in low gloss and excellent in blocking resistance.
  • the stretchable laminate of the present invention may contain any other appropriate layer as long as the effects of the present invention are not impaired.
  • Such any other appropriate layer may be only one layer or two or more layers.
  • the olefin resin layer is preferably laminated directly on the elastomer layer. That is, one of the preferred embodiments of the stretchable laminate of the present invention is a form in which an olefin resin layer is directly laminated on at least one side of the elastomer layer.
  • the stretch laminate of the present invention can be excellent in low gloss and can be excellent in blocking resistance.
  • FIG. 1 is a schematic cross-sectional view of a stretchable laminate according to a preferred embodiment of the present invention.
  • the stretchable laminate 100 shown in FIG. 1 is provided on the opposite side of the elastomer layer 10 and the olefin resin layer 20a provided on one side of the elastomer layer 10 and the olefin resin layer 20a of the elastomer layer 10. And the obtained olefin resin layer 20b.
  • a material for adhering both may exist between the elastomer layer 10 and the olefin resin layer 20a and / or between the elastomer layer 10 and the olefin resin layer 20b. Examples of such a material include an adhesive, a pressure-sensitive adhesive, and a hot melt pressure-sensitive adhesive.
  • the thickness of the stretchable laminate of the present invention depends on the thickness of the elastomer layer and the thickness of the olefin resin layer, but is preferably 10 ⁇ m to 500 ⁇ m, more preferably 10 ⁇ m to 250 ⁇ m, and even more preferably 10 ⁇ m. ⁇ 200 ⁇ m, particularly preferably 10 ⁇ m to 100 ⁇ m.
  • the stretch laminate of the present invention has a 60 ° gloss value of 10 or less, preferably 8 or less, more preferably 6 or less, still more preferably 5 or less, and particularly preferably 4 or less. Most preferably, it is 3 or less.
  • a stretch laminate excellent in low gloss can be provided.
  • the stretchable laminate of the present invention is preferably formed by pre-extension.
  • This pre-elongation is pre-elongation in the sense that the stretchable laminate of the present invention may be re-elongated in the final use (for example, when manufacturing diapers and when using diapers).
  • any suitable conditions are adopted for the prestretching conditions (stretching direction, stretching speed, stretching ratio, etc.). Can do.
  • the pre-extension is preferably performed after the elastic laminate of the present invention is produced and sufficiently solidified.
  • the pre-extension may be performed on the entire length or width in at least one direction, or may be performed partially.
  • the pre-extension can be performed in any direction.
  • Pre-stretching is preferably performed on its original length or width in at least one direction.
  • the degree of extension in the pre-extension is preferably 50% or more and less than 150% (typically 100%), more preferably 150% or more and less than 250% (typically 200%), and further preferably 250% or more and 350%. Less (typically 300%), particularly preferably 350% or more and less than 450% (typically 400%).
  • 100% pre-extension means to extend twice.
  • the pre-elongation is preferably performed at a temperature below the melting point of either the elastomer layer or the olefin resin layer.
  • the stretchable laminate of the present invention can exhibit more excellent elastic performance.
  • the stretch laminate of the present invention preferably has an excellent error because the olefinic resin layer is plastically deformed or stretched beyond the brittle fracture point of the olefinic resin layer by pre-elongation in this way. Can exhibit stick performance. That is, the stretchable laminate of the present invention is preferably less elastic due to the presence of the olefin-based resin layer before being pre-stretched, and therefore has good handleability, while pre-stretching. After being made, excellent elastic performance can be developed.
  • the stretch laminate of the present invention is preferably stretched in advance, so that the olefin resin layer is plastically deformed or stretched beyond the brittle fracture point of the olefin resin layer.
  • the glossiness of the olefin resin layer that has been plastically deformed or stretched beyond the brittle fracture point can be preferably reduced.
  • high-gloss members are misunderstood as being wet and are difficult to adopt.
  • the stretchable laminate of the present invention is preferably used as a member for articles such as diapers and masks, such as sanitary goods, because the glossiness can be reduced by pre-stretching.
  • ⁇ Elastomer layer Any appropriate number of elastomer layers may be adopted.
  • the number of such elastomer layers is preferably 1 to 5 layers, more preferably 1 to 3 layers, still more preferably 1 to 2 layers, and particularly preferably 1 layer.
  • each of these layers may be the same type of layer, or at least two layers may be different types of layers.
  • the elastomer layer may contain any appropriate resin as long as the effects of the present invention are not impaired.
  • resins include olefin elastomers and styrene elastomers.
  • the elastomer layer includes an olefin-based elastomer.
  • the stretch laminate of the present invention can be more excellent in low gloss.
  • olefin-based elastomer Only one type of olefin-based elastomer may be used, or a blend of two or more types may be used.
  • the thermal stability can be improved, and for example, thermal degradation during the production of the stretchable laminate of the present invention can be suppressed.
  • thermal stability improves and the fluctuation
  • the process for producing the elastomer layer can be simplified and the processing cost can be suppressed. This is because when an olefin-based elastomer is employed, 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 masterbatch.
  • the content of the olefin-based elastomer 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, from the viewpoint that the effects of the present invention are more manifested. Is 80% to 100% by weight, particularly preferably 90% to 100% by weight, and most preferably 95% to 100% by weight.
  • 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 Fin block copolymers, propylene-ethylene-olefin block
  • the olefin-based elastomer its density, preferably 0.890g / cm 3 ⁇ 0.830g / cm 3, more preferably 0.888g / cm 3 ⁇ 0.835g / 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 0.885 g / cm 3 to 0.845 g / cm 3. 3 .
  • the stretchable laminate of the present invention can be further improved due to low gloss.
  • the MFR at 2.16 kgf at 230 ° C. is 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, most preferably 2.0 g / 10 min. Min to 19.0 g / 10 min.
  • the stretchable laminate of the present invention can be further improved due to low gloss.
  • the olefin elastomer is preferably an ⁇ -olefin elastomer. That is, it is a copolymer of two or more ⁇ -olefins and has elastomeric properties.
  • ⁇ -olefin elastomers more preferably selected from ethylene elastomers, propylene elastomers, and 1-butene elastomers.
  • ethylene elastomers and propylene elastomers are particularly preferable.
  • the stretchable laminate of the present invention can be further improved due to low gloss.
  • the ⁇ -olefin elastomer can be obtained as a commercial product.
  • Commercially available products include some of “Tuffmer” (registered trademark) series manufactured by Mitsui Chemicals, Inc. (for example, Tuffmer PN-3560, etc.), “Vistamaxx” manufactured by ExxonMobil, Inc. "(Registered trademark) series (for example, Vistamax 6202, Vistamax 7010, etc.).
  • the ⁇ -olefin elastomer is preferably produced using a metallocene catalyst.
  • a metallocene catalyst By employing an ⁇ -olefin elastomer produced using a metallocene catalyst, the stretch laminate of the present invention can be more excellent in low gloss.
  • 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 8 ⁇ m to 450 ⁇ m, more preferably 8 ⁇ m to 220 ⁇ m, still more preferably 8 ⁇ m to 180 ⁇ m, particularly preferably 8 ⁇ m to 90 ⁇ m, and most preferably 8 ⁇ m to 67 ⁇ m.
  • ⁇ Olefin resin layer Any appropriate number can be adopted as the number of olefin-based resin layers.
  • the number of such olefin-based resin layers is preferably 1 to 5 layers, more preferably 1 to 3 layers, still more preferably 1 to 2 layers, and particularly preferably 2 layers ( For example, one layer on each side of the elastomer layer).
  • all of these layers may be the same type of layers, or at least two layers may be different types of layers.
  • the olefin-based resin layer may contain any appropriate resin as long as the effects of the present invention are not impaired.
  • the olefin resin layer preferably contains a non-elastomeric olefin resin.
  • a non-elastomeric olefin resin means an olefin resin that is not an elastomeric olefin resin.
  • the non-elastomeric olefin resin may be only one kind, or may be a blend or copolymer of two or more kinds.
  • the content ratio of the non-elastomeric olefin resin in the olefin resin layer is preferably 50% by weight to 100% by weight, more preferably 70% by weight to 100% by weight, from the viewpoint that the effect of the present invention is more manifested. More preferably, it is 80% by weight to 100% by weight, particularly preferably 90% by weight to 100% by weight, and most preferably 95% by weight to 100% by weight.
  • non-elastomeric olefin resins include ⁇ -olefin homopolymers, copolymers of two or more ⁇ -olefins, block polypropylene, random polypropylene, one or more ⁇ -olefins and other vinyls. Examples thereof include a monomer copolymer. Examples of the copolymerization form in the copolymer include a block form and a random form.
  • ⁇ -olefins examples include ⁇ -olefins having 2 to 12 carbon atoms. Examples of such ⁇ -olefins include ethylene, propylene, 1-butene and 4-methyl-1-pentene.
  • Examples of the ⁇ -olefin homopolymer include polyethylene (PE), homopolypropylene (PP), poly (1-butene), poly (4-methyl-1-pentene), and the like.
  • PE polyethylene
  • LDPE low density polyethylene
  • LLDPE linear low density polyethylene
  • MDPE medium density polyethylene
  • HDPE high density polyethylene
  • the structure of homopolypropylene (PP) may be any of isotactic, atactic and syndiotactic.
  • the non-elastomeric olefin-based resin preferably includes an ⁇ -olefin homopolymer, more preferably at least selected from polyethylene (PE) and homopolypropylene (PP), from the viewpoint that the effects of the present invention can be further expressed.
  • 1 type is included, More preferably, at least 1 type chosen from a high density polyethylene (HDPE) and a homo polypropylene (PP) is included.
  • HDPE high density polyethylene
  • PP homo polypropylene
  • the non-elastomeric olefin-based resin can provide a stretch laminate that is more excellent in low gloss.
  • the content ratio of the homopolymer of ⁇ -olefin in the non-elastomeric olefin resin is preferably 50% by weight to 100% by weight, more preferably 70% by weight or more, from the viewpoint that the effect of the present invention can be expressed more. 100 wt%, more preferably 80 wt% to 100 wt%, even more preferably 90 wt% to 100 wt%, particularly preferably 95 wt% to 100 wt%, most preferably substantially 100% by weight.
  • Examples of the copolymer of two or more kinds of ⁇ -olefins include, for example, an ethylene / propylene copolymer, an ethylene / 1-butene copolymer, an ethylene / propylene / 1-butene copolymer, an ethylene / carbon number of 5 to 12 ⁇ -olefin copolymers, propylene / ⁇ -olefin copolymers having 5 to 12 carbon atoms, and the like.
  • Examples of the copolymer of one or more ⁇ -olefins and other vinyl monomers include, for example, ethylene / vinyl acetate copolymer, ethylene / acrylic acid alkyl ester copolymer, ethylene / methacrylic acid alkyl ester copolymer And an ethylene-nonconjugated diene copolymer.
  • a commercially available non-elastomeric olefin resin may be used.
  • the olefin-based resin layer may contain any appropriate other component as long as the effects of the present invention are not impaired.
  • examples of such other components include mold release agents, ultraviolet absorbers, heat stabilizers, fillers, lubricants, colorants (dyes, etc.), antioxidants, anti-smudge agents, anti-blocking agents, and foams.
  • the content of other components in the olefin resin 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. And most preferably 1% by weight or less.
  • the release agent examples include fatty acid amide release agents, silicone release agents, fluorine release agents, and long-chain alkyl release agents. From the viewpoint that an excellent release layer can be formed due to a balance between releasability and contamination due to bleed-out, a fatty acid amide release agent is preferable, and a saturated fatty acid bisamide is more preferable.
  • Arbitrary appropriate content can be employ
  • the ultraviolet absorber examples include benzotriazole compounds, benzophenone compounds, benzoate compounds, and the like. Any appropriate content can be adopted as the content of the ultraviolet absorber as long as it does not bleed out during molding. Typically, it is preferably 0.01% by weight to 5% by weight with respect to the resin component in the olefin resin layer (preferably a non-elastomeric olefin resin).
  • the heat stabilizer examples include hindered amine compounds, phosphorus compounds, and cyanoacrylate compounds. Any appropriate content can be adopted as the content of the heat-resistant stabilizer as long as it does not bleed out during molding. Typically, it is preferably 0.01% by weight to 5% by weight with respect to the resin component in the olefin resin layer (preferably a non-elastomeric olefin resin).
  • the filler examples include inorganic fillers such as talc, titanium oxide, calcium oxide, magnesium oxide, zinc oxide, titanium oxide, calcium carbonate, silica, clay, mica, barium sulfate, whisker, and magnesium hydroxide.
  • the average particle diameter of the filler is preferably 0.1 ⁇ m to 20 ⁇ m.
  • Arbitrary appropriate content can be employ
  • the amount is preferably 1% by weight to 200% by weight with respect to the resin component (preferably non-elastomeric olefin resin) in the olefin resin layer.
  • the thickness of the olefin resin layer is preferably 2 ⁇ m to 50 ⁇ m, more preferably 2 ⁇ m to 30 ⁇ m, still more preferably 2 ⁇ m to 20 ⁇ m, particularly preferably 2 ⁇ m to 10 ⁇ m, and most preferably 2 ⁇ m to 8 ⁇ m. is there.
  • any method for producing the stretchable laminate of the present invention any method can be used as long as the structure having an olefin-based resin layer on at least one side of the elastomer layer can be constructed without impairing the effects of the present invention. Any suitable method can be employed.
  • a method for producing the stretchable laminate of the present invention a method of producing a laminate by using a multilayer extrusion T-die molding machine is typically mentioned.
  • a stretchable laminate comprising a laminate structure of an olefin resin layer / elastomer layer / olefin resin layer
  • the roll material of the stretchable laminate can be manufactured by co-extrusion of the molding material / the molding material of the olefin resin layer from the T-die and integrating them, and then winding up into a roll shape.
  • an inflation method or the like can be employed.
  • the stretchable laminate of the present invention has an olefin resin layer on at least one side of the elastomer layer.
  • the stretchable laminate of the present invention can preferably exhibit excellent anti-blocking performance.
  • the stretchable laminate of the present invention has an olefin-based resin layer on both sides of the elastomer layer, it can exhibit very excellent blocking resistance.
  • the stretchable laminate of the present invention can exhibit better blocking resistance by including the filler as described above in the olefin resin layer.
  • the stretchable laminate of the present invention can exhibit excellent anti-blocking performance even when the olefin resin layer does not contain the filler as described above.
  • 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.
  • the stretchable laminate of the present invention is used as a stretchable member (waistband or gathers) in diapers (particularly the ear (ear) portion, waist or leg opening). Diapers), supporters and masks.
  • ⁇ 60 ° gloss value> The 60 ° gloss value of the stretchable laminates or laminates obtained in Examples and Comparative Examples was measured according to JIS Z 8741. Specifically, micro-TRI-gloss, Cat., Available from BYK-Gardner GmbH. No. Measurements were made using 4446. Ten 60 ° gloss values were measured, and the average of these 10 measurements was taken as the 60 ° gloss value in the present invention.
  • stretchable laminates or laminates were molded using a three-type three-layer (A layer / B layer / C layer) extrusion T-die molding machine.
  • the extrusion temperature was carried out under the following conditions.
  • the stretchable laminate or laminate was sufficiently solidified, it was rolled into a roll shape.
  • pre-stretching the stretchable laminate or laminate that was drawn out from the roll body was pre-stretched 400% in the width direction.
  • ⁇ SS data measurement method> The stretchable laminates or laminates obtained in the examples and comparative examples were cut to 30 mm in the width direction, and set in a tensile tester (manufactured by Shimadzu Corporation: AG-20kNG) with a chuck distance of 40 mm in the longitudinal direction. After stretching to 400% at a pulling speed of 1000 mm / min, the stretching was returned to 0% at a pulling speed of 1000 mm / min.
  • ⁇ Hysteresis data measurement method> The stretchable laminates or laminates obtained in the examples and comparative examples were cut to 30 mm in the width direction, and set in a tensile tester (manufactured by Shimadzu Corporation: AG-20kNG) with a chuck distance of 40 mm in the longitudinal direction. After stretching to 100% at a pulling speed of 500 mm / min, the stretching was returned to 0% at a pulling speed of 500 mm / min.
  • Example 1 100 parts by weight of HDPE (trade name: Nipolon Hard 1000) as a non-elastomeric olefin resin is used as the A layer of the extruder and 100 parts by weight of EPR (product name: Vistamax 6202) as an olefin elastomer.
  • HDPE trade name: Nipolon Hard 1000
  • EPR product name: Vistamax 6202
  • the stretchable laminate (1) having a thickness of 2 ⁇ m / 36 ⁇ m / 2 ⁇ m and a total thickness of 40 ⁇ m was extruded.
  • the results are shown in Table 1.
  • the obtained stretchable laminate (1) was pre-stretched in the width direction at a magnification of 400%.
  • the SS data at the time of pre-extension of the stretchable laminate (1) was measured as shown in FIG. Further, when the hysteresis loop after the pre-extension of the stretchable laminate (1) was measured, it was as shown in FIG.
  • Example 2 A stretchable laminate (2) was obtained in the same manner as in Example 1 except that HDPE (manufactured by Basell, trade name: 52518) was used as the non-elastomeric olefin resin. The results are shown in Table 1.
  • Example 3 A stretchable laminate (3) was obtained in the same manner as in Example 1 except that PP (manufactured by Nippon Polypro Co., Ltd., trade name: Novatec PP BC03C) was used as the non-elastomeric olefin resin. The results are shown in Table 1.
  • Example 4 A blend of 95 parts by weight of EPR (trade name: Vistamax 6202, manufactured by ExxonMobil Corp.) as an olefin elastomer and 5 parts by weight of (titanium oxide, manufactured by Dupont, trade name: Ti-Pure R103) as a white pigment.
  • EPR trade name: Vistamax 6202, manufactured by ExxonMobil Corp.
  • Ti-Pure R103 titanium oxide
  • Example 8 Except for using non-elastomeric olefin resin blended with 80 parts by weight of HDPE (manufactured by Tosoh Corporation, trade name: Nipolon Hard 1000) and 20 parts by weight of PP (trade name: Novatec PP BC03C, made by Nippon Polypro) In the same manner as in Example 1, an elastic laminate (8) was obtained. The results are shown in Table 1.
  • HDPE manufactured by Tosoh Corporation, trade name: Nipolon Hard 1000
  • PP trade name: Novatec PP BC03C, made by Nippon Polypro
  • Example 9 Example except that 70 parts by weight of EPR (ExxonMobil Corp., trade name: Vistamax 6202) and 30 parts by weight of Tuffmer PN-3560 (Mitsui Chemicals Co., Ltd.) as olefin elastomer were added to the B layer. In the same manner as in Example 1, an elastic laminate (9) was obtained. The results are shown in Table 1.
  • EPR ExxonMobil Corp., trade name: Vistamax 6202
  • Tuffmer PN-3560 Mitsubishi Chemicals Co., Ltd.
  • Example 10 A stretchable laminate (10) was obtained in the same manner as in Example 1 except that 100 parts by weight of EPR (exxon mobile, trade name: Vistamax 7010) was used as the olefin elastomer. The results are shown in Table 1.
  • EPR exxon mobile, trade name: Vistamax 7010
  • Example 11 A stretchable laminate (11) was obtained in the same manner as in Example 1 except that nothing was added to the C layer. The results are shown in Table 1.
  • Example 12 A stretchable laminate (12) was prepared in the same manner as in Example 1 except that 100 parts by weight of SIS (manufactured by Nippon Zeon Co., Ltd., trade name: QUINTAC 3399) was used as a styrene elastomer instead of the olefin elastomer. Obtained. The results are shown in Table 1.
  • SIS manufactured by Nippon Zeon Co., Ltd., trade name: QUINTAC 3399
  • Example 13 A stretchable laminate (13) was obtained in the same manner as in Example 1 except that 100 parts by weight of SBS (manufactured by Kraton Polymer, trade name: Kraton D1191): 100 parts by weight was used as the styrene elastomer instead of the olefin elastomer. The results are shown in Table 1.
  • SBS manufactured by Kraton Polymer, trade name: Kraton D1191
  • 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.
  • the stretchable laminate of the present invention is used as a stretchable member (waistband or gathers) in diapers (particularly the ear (ear) portion, waist or leg opening). Diapers), supporters and masks.

Abstract

Provided is an elastic laminate that has excellent low glossiness and excellent blocking resistance. Also provided is an article containing the elastic laminate. The elastic laminate comprises an olefin resin layer on at least one side of an elastomer layer. The 60° gloss value of the elastic laminate is 10 or less.

Description

伸縮性積層体およびそれを含む物品Stretchable laminate and article containing the same
　本発明は、伸縮性積層体およびそれを含む物品に関する。 The present invention relates to an elastic laminate and an article including the same.
　おむつやマスクなどの衛生用品等の物品には、種々の伸縮性積層体が提案されている。 Various stretchable laminates have been proposed for articles such as sanitary goods such as diapers and masks.
　このような部材として、エラストマー層の少なくとも一方の側にエラストマー性樹脂層を有する伸縮性積層体が提案されている（例えば、特許文献１）。 As such a member, an elastic laminate having an elastomeric resin layer on at least one side of the elastomer layer has been proposed (for example, Patent Document 1).
　おむつやマスクなどの衛生用品等の物品は、一般に、その用途のために、濡れているように見える外観が好まれない。すなわち、低光沢性が求められる。 衛生 Articles such as sanitary goods such as diapers and masks generally do not like the appearance of being wet because of their use. That is, low glossiness is required.
　また、エラストマー性を有する樹脂（例えば、オレフィン系エラストマーやスチレン系エラストマーなど）からなる層は、それ同士が積層された場合にブロッキングが起こりやすい。このため、例えば、エラストマー性を有する樹脂からなる層同士が積層されるような状態で伸縮性積層体をロール体とした場合には、エラストマー性を有する樹脂からなる層同士が容易にブロッキングしてしまい、巻戻しが困難になりやすい。 In addition, layers made of elastomeric resins (for example, olefin-based elastomers and styrene-based elastomers) are likely to be blocked when they are laminated. For this reason, for example, when the stretchable laminate is made into a roll body in a state where layers made of elastomeric resin are laminated, the layers made of elastomeric resin are easily blocked. Therefore, rewinding tends to be difficult.
米国特許出願公開第２０１１／０１７７７３５号明細書US Patent Application Publication No. 2011/0177735
　本発明は上記従来の課題を解決するためになされたものであり、その目的とするところは、低光沢性に優れるとともに、耐ブロッキング性に優れる、伸縮性積層体を提供することにある。また、そのような伸縮性積層体を含む物品を提供することにある。 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 having excellent low glossiness and excellent blocking resistance. Moreover, it is providing the articles | goods containing such a stretchable laminated body.
　本発明の伸縮性積層体は、
　エラストマー層の少なくとも一方の側にオレフィン系樹脂層を有する伸縮性積層体であって、
　該伸縮性積層体の６０°光沢度値が１０以下である。 The stretchable laminate of the present invention is
An elastic laminate having an olefinic resin layer on at least one side of the elastomer layer,
The stretchable laminate has a 60 ° gloss value of 10 or less.
　好ましい実施形態においては、上記エラストマー層の両側に上記オレフィン系樹脂層を有する。 In a preferred embodiment, the elastomer layer has the olefin resin layer on both sides.
　好ましい実施形態においては、上記オレフィン系樹脂層が上記エラストマー層の少なくとも一方の側に直接に積層されている。 In a preferred embodiment, the olefin resin layer is directly laminated on at least one side of the elastomer layer.
　好ましい実施形態においては、本発明の伸縮性積層体は、厚みが１０μｍ～５００μｍである。 In a preferred embodiment, the stretch laminate of the present invention has a thickness of 10 μm to 500 μm.
　好ましい実施形態においては、上記オレフィン系樹脂層が非エラストマー性オレフィン系樹脂を含む。 In a preferred embodiment, the olefin resin layer contains a non-elastomeric olefin resin.
　好ましい実施形態においては、上記オレフィン系樹脂層中の上記非エラストマー性オレフィン系樹脂の含有割合が５０重量％～１００重量％である。 In a preferred embodiment, the content ratio of the non-elastomeric olefin resin in the olefin resin layer is 50% by weight to 100% by weight.
　好ましい実施形態においては、上記オレフィン系樹脂層中の上記非エラストマー性オレフィン系樹脂の含有割合が９５重量％～１００重量％である。 In a preferred embodiment, the content ratio of the non-elastomeric olefin resin in the olefin resin layer is 95% by weight to 100% by weight.
　好ましい実施形態においては、上記非エラストマー性オレフィン系樹脂が、α－オレフィンのホモポリマーを含む。 In a preferred embodiment, the non-elastomeric olefin resin contains an α-olefin homopolymer.
　好ましい実施形態においては、上記α－オレフィンのホモポリマーが、ポリエチレン、ホモポリプロピレンから選ばれる少なくとも１種である。 In a preferred embodiment, the α-olefin homopolymer is at least one selected from polyethylene and homopolypropylene.
　好ましい実施形態においては、上記ポリエチレンが高密度ポリエチレンである。 In a preferred embodiment, the polyethylene is high density polyethylene.
　好ましい実施形態においては、上記オレフィン系樹脂層の厚みが２μｍ～５０μｍである。 In a preferred embodiment, the olefin resin layer has a thickness of 2 μm to 50 μm.
　好ましい実施形態においては、上記オレフィン系樹脂層の厚みが２μｍ～８μｍである。 In a preferred embodiment, the olefin resin layer has a thickness of 2 μm to 8 μm.
　好ましい実施形態においては、上記エラストマー層がオレフィン系エラストマーを含む。 In a preferred embodiment, the elastomer layer contains an olefin elastomer.
　好ましい実施形態においては、上記エラストマー層中の上記オレフィン系エラストマーの含有割合が５０重量％～１００重量％である。 In a preferred embodiment, the content of the olefin-based elastomer in the elastomer layer is 50% by weight to 100% by weight.
　好ましい実施形態においては、上記エラストマー層中の上記オレフィン系エラストマーの含有割合が９５重量％～１００重量％である。 In a preferred embodiment, the content of the olefin elastomer in the elastomer layer is 95% by weight to 100% by weight.
　好ましい実施形態においては、上記オレフィン系エラストマーがα－オレフィン系エラストマーである。 In a preferred embodiment, the olefin elastomer is an α-olefin elastomer.
　好ましい実施形態においては、上記α－オレフィン系エラストマーが、エチレン系エラストマー、プロピレン系エラストマーから選ばれる少なくとも１種である。 In a preferred embodiment, the α-olefin elastomer is at least one selected from ethylene elastomer and propylene elastomer.
　好ましい実施形態においては、上記α－オレフィン系エラストマーが、メタロセン触媒を用いて製造されたものである。 In a preferred embodiment, the α-olefin-based elastomer is produced using a metallocene catalyst.
　好ましい実施形態においては、上記エラストマー層の厚みが８μｍ～４５０μｍである。 In a preferred embodiment, the elastomer layer has a thickness of 8 μm to 450 μm.
　好ましい実施形態においては、上記エラストマー層の厚みが８μｍ～６７μｍである。 In a preferred embodiment, the elastomer layer has a thickness of 8 μm to 67 μm.
　好ましい実施形態においては、上記伸縮性積層体が事前伸長により形成されたものである。 In a preferred embodiment, the stretchable laminate is formed by pre-extension.
　好ましい実施形態においては、本発明の伸縮性積層体は、衛生用品に用いられる。 In a preferred embodiment, the stretch laminate of the present invention is used for sanitary goods.
　本発明の物品は、本発明の伸縮性積層体を含む。 The article of the present invention includes the stretchable laminate of the present invention.
　本発明によれば、低光沢性に優れるとともに、耐ブロッキング性に優れる、伸縮性積層体を提供することができる。また、そのような伸縮性積層体を含む物品を提供することができる。 According to the present invention, it is possible to provide a stretchable laminate that is excellent in low gloss and excellent in blocking resistance. Moreover, the articles | goods containing such a stretchable laminated body can be provided.
本発明の好ましい実施形態による伸縮性積層体の概略断面図である。It is a schematic sectional drawing of the elastic laminated body by preferable embodiment of this invention. 本発明の伸縮性積層体の事前伸長時のＳ－Ｓデータ図である。It is an SS data figure at the time of prior extension of the elastic layered product of the present invention. 本発明の伸縮性積層体の事前伸長後のヒステリシスループ図である。It is a hysteresis loop figure after the prior expansion | extension of the elastic laminated body of this invention.
≪≪伸縮性積層体≫≫
　本発明の伸縮性積層体は、エラストマー層の少なくとも一方の側にオレフィン系樹脂層を有する。すなわち、本発明の伸縮性積層体は、エラストマー層の片方の側のみにオレフィン系樹脂層を有していても良いし、エラストマー層の両方の側にオレフィン系樹脂層を有していても良い。本発明の伸縮性積層体がこのような構成を有することにより、本発明の伸縮性積層体は、低光沢性に優れ得るとともに、耐ブロッキング性に優れ得る。 ≪≪Elastic laminate >> ≫
The stretchable laminate of the present invention has an olefin resin layer on at least one side of the elastomer layer. That is, the stretchable laminate of the present invention may have an olefin resin layer only on one side of the elastomer layer, or may have an olefin resin layer on both sides of the elastomer layer. . When the stretchable laminate of the present invention has such a configuration, the stretchable laminate of the present invention can be excellent in low gloss and excellent in blocking resistance.
　本発明の伸縮性積層体は、本発明の効果を損なわない範囲で、他の任意の適切な層を含んでいても良い。このような他の任意の適切な層は、１層のみでも良いし、２層以上でも良い。 The stretchable laminate of the present invention may contain any other appropriate layer as long as the effects of the present invention are not impaired. Such any other appropriate layer may be only one layer or two or more layers.
　本発明の伸縮性積層体においては、オレフィン系樹脂層は、好ましくは、エラストマー層に直接に積層されている。すなわち、本発明の伸縮性積層体の好ましい実施形態の一つは、エラストマー層の少なくとも一方の側にオレフィン系樹脂層が直接に積層されている形態である。このように、オレフィン系樹脂層がエラストマー層に直接に積層されていることによって、本発明の伸縮性積層体は、低光沢性により優れ得るとともに、耐ブロッキング性により優れ得る。 In the stretchable laminate of the present invention, the olefin resin layer is preferably laminated directly on the elastomer layer. That is, one of the preferred embodiments of the stretchable laminate of the present invention is a form in which an olefin resin layer is directly laminated on at least one side of the elastomer layer. Thus, when the olefin resin layer is directly laminated on the elastomer layer, the stretch laminate of the present invention can be excellent in low gloss and can be excellent in blocking resistance.
　図１は、本発明の好ましい実施形態による伸縮性積層体の概略断面図である。図１に示す伸縮性積層体１００は、エラストマー層１０と該エラストマー層１０の一方の側に設けられたオレフィン系樹脂層２０ａと、該エラストマー層１０の該オレフィン系樹脂層２０ａの反対側に設けられたオレフィン系樹脂層２０ｂとを有する。エラストマー層１０とオレフィン系樹脂層２０ａとの間、および／または、エラストマー層１０とオレフィン系樹脂層２０ｂとの間には、これら両者を接着するための材料が存在していても良い。このような材料としては、例えば、接着剤、粘着剤、ホットメルト粘着剤などが挙げられる。 FIG. 1 is a schematic cross-sectional view of a stretchable laminate according to a preferred embodiment of the present invention. The stretchable laminate 100 shown in FIG. 1 is provided on the opposite side of the elastomer layer 10 and the olefin resin layer 20a provided on one side of the elastomer layer 10 and the olefin resin layer 20a of the elastomer layer 10. And the obtained olefin resin layer 20b. A material for adhering both may exist between the elastomer layer 10 and the olefin resin layer 20a and / or between the elastomer layer 10 and the olefin resin layer 20b. Examples of such a material include an adhesive, a pressure-sensitive adhesive, and a hot melt pressure-sensitive adhesive.
　本発明の伸縮性積層体の厚みは、エラストマー層の厚みや、オレフィン系樹脂層の厚みによって左右されるが、好ましくは１０μｍ～５００μｍであり、より好ましくは１０μｍ～２５０μｍであり、さらに好ましくは１０μｍ～２００μｍであり、特に好ましくは１０μｍ～１００μｍである。本発明の伸縮性積層体の厚みをこのような範囲内に調整することにより、おむつやマスクなどの衛生用品等の物品に用いる部材として用いやすくなる。 The thickness of the stretchable laminate of the present invention depends on the thickness of the elastomer layer and the thickness of the olefin resin layer, but is preferably 10 μm to 500 μm, more preferably 10 μm to 250 μm, and even more preferably 10 μm. ˜200 μm, particularly preferably 10 μm to 100 μm. By adjusting the thickness of the stretchable laminate of the present invention within such a range, it becomes easy to use as a member used for articles such as sanitary goods such as diapers and masks.
　本発明の伸縮性積層体は、６０°光沢度値が１０以下であり、好ましくは８以下であり、より好ましくは６以下であり、さらに好ましくは５以下であり、特に好ましくは４以下であり、最も好ましくは３以下である。本発明の伸縮性積層体の６０°光沢度値を上記範囲内に調整することにより、低光沢性に優れる伸縮性積層体を提供することができる。特に、本発明の伸縮性積層体の６０°光沢度値を上記範囲内に調整することにより、おむつやマスクなどの衛生用品等の物品に組み込まれた際に目立ち難く、また、濡れているように見え難い。 The stretch laminate of the present invention has a 60 ° gloss value of 10 or less, preferably 8 or less, more preferably 6 or less, still more preferably 5 or less, and particularly preferably 4 or less. Most preferably, it is 3 or less. By adjusting the 60 ° gloss value of the stretch laminate of the present invention within the above range, a stretch laminate excellent in low gloss can be provided. In particular, by adjusting the 60 ° gloss value of the stretchable laminate of the present invention within the above range, it is not noticeable when it is incorporated in articles such as sanitary goods such as diapers and masks, and seems to be wet. It is hard to see.
　本発明の伸縮性積層体は、好ましくは、事前伸長により形成されたものである。なお、この事前伸長は、本発明の伸縮性積層体が最終利用（例えば、オムツの製造時およびオムツの使用時）において再度伸長されることがあるという意味の事前伸長である。また、事前伸長を行うことで、その後、本発明の伸縮性積層体が伸縮性を発現できる限り、事前伸長の条件（延伸方向、延伸速度、延伸倍率等）は、任意の適切な条件を採用し得る。 The stretchable laminate of the present invention is preferably formed by pre-extension. This pre-elongation is pre-elongation in the sense that the stretchable laminate of the present invention may be re-elongated in the final use (for example, when manufacturing diapers and when using diapers). In addition, as long as the stretchable laminate of the present invention can exhibit stretchability by performing prestretching, any suitable conditions are adopted for the prestretching conditions (stretching direction, stretching speed, stretching ratio, etc.). Can do.
　事前伸長は、好ましくは、本発明の伸縮性積層体を製造して十分に固化した後に行う。 The pre-extension is preferably performed after the elastic laminate of the present invention is produced and sufficiently solidified.
　事前伸長は、少なくとも１方向において、その元の長さまたは幅に対して全体に行っても良いし、部分的に行っても良い。また、事前伸長は、任意の方向に行うことができる。事前伸長は、好ましくは、少なくとも１方向において、その元の長さまたは幅に対して行う。 The pre-extension may be performed on the entire length or width in at least one direction, or may be performed partially. The pre-extension can be performed in any direction. Pre-stretching is preferably performed on its original length or width in at least one direction.
　事前伸長の伸長度合は、好ましくは５０％以上１５０％未満（代表的には１００％）、より好ましくは１５０％以上２５０％未満（代表的には２００％）、さらに好ましくは２５０％以上３５０％未満（代表的には３００％）、特に好ましくは３５０％以上４５０％未満（代表的には４００％）である。なお、例えば、１００％の事前伸長とは、２倍に伸長することを意味する。このような伸長度合で事前伸長することにより、本発明の伸縮性積層体は、より優れたエラスティック性能を発現し得る。 The degree of extension in the pre-extension is preferably 50% or more and less than 150% (typically 100%), more preferably 150% or more and less than 250% (typically 200%), and further preferably 250% or more and 350%. Less (typically 300%), particularly preferably 350% or more and less than 450% (typically 400%). In addition, for example, 100% pre-extension means to extend twice. By pre-extension at such an extension degree, the stretchable laminate of the present invention can exhibit more excellent elastic performance.
　事前伸長は、好ましくは、エラストマー層またはオレフィン系樹脂層のいずれかの融点未満の温度で実施される。このような温度で事前伸長することにより、本発明の伸縮性積層体は、より優れたエラスティック性能を発現し得る。 The pre-elongation is preferably performed at a temperature below the melting point of either the elastomer layer or the olefin resin layer. By pre-stretching at such a temperature, the stretchable laminate of the present invention can exhibit more excellent elastic performance.
　本発明の伸縮性積層体は、好ましくは、このように事前伸長させることにより、オレフィン系樹脂層が塑性変形したりオレフィン系樹脂層の脆性破壊点を超えて伸長されたりして、優れたエラスティック性能を発現し得る。すなわち、本発明の伸縮性積層体は、好ましくは、事前伸長させる前においてはオレフィン系樹脂層の存在によってエラスティック性が発現され難く、このために、取り扱い性が良好であり、一方、事前伸長させた後においては、優れたエラスティック性能が発現され得る。 The stretch laminate of the present invention preferably has an excellent error because the olefinic resin layer is plastically deformed or stretched beyond the brittle fracture point of the olefinic resin layer by pre-elongation in this way. Can exhibit stick performance. That is, the stretchable laminate of the present invention is preferably less elastic due to the presence of the olefin-based resin layer before being pre-stretched, and therefore has good handleability, while pre-stretching. After being made, excellent elastic performance can be developed.
　本発明の伸縮性積層体は、好ましくは、事前伸長させることにより、オレフィン系樹脂層が塑性変形したりオレフィン系樹脂層の脆性破壊点を超えて伸長されたりする。このように塑性変形したり脆性破壊点を超えて伸長されたりしたオレフィン系樹脂層は、好ましくは、光沢度が低減され得る。おむつやマスクなどの衛生用品等の物品においては、高光沢部材は、濡れていると誤認されるために、採用し難い。本発明の伸縮性積層体は、好ましくは、事前伸長させることにより光沢度が低減され得るので、おむつやマスクなどの衛生用品等の物品に用いる部材として好ましい。 The stretch laminate of the present invention is preferably stretched in advance, so that the olefin resin layer is plastically deformed or stretched beyond the brittle fracture point of the olefin resin layer. The glossiness of the olefin resin layer that has been plastically deformed or stretched beyond the brittle fracture point can be preferably reduced. In articles such as sanitary goods such as diapers and masks, high-gloss members are misunderstood as being wet and are difficult to adopt. The stretchable laminate of the present invention is preferably used as a member for articles such as diapers and masks, such as sanitary goods, because the glossiness can be reduced by pre-stretching.
≪エラストマー層≫
　エラストマー層の層数は、任意の適切な数を採用し得る。このようなエラストマー層の層数は、好ましくは１層～５層であり、より好ましくは１層～３層であり、さらに好ましくは１層～２層であり、特に好ましくは１層である。 ≪Elastomer layer≫
Any appropriate number of elastomer layers may be adopted. The number of such elastomer layers is preferably 1 to 5 layers, more preferably 1 to 3 layers, still more preferably 1 to 2 layers, and particularly preferably 1 layer.
　エラストマー層の層数が複数である場合、それらの各層は、全て同種の層であっても良いし、少なくとも２層が異種の層であっても良い。 When the number of elastomer layers is plural, each of these layers may be the same type of layer, or at least two layers may be different types of layers.
　エラストマー層は、本発明の効果を損なわない範囲で任意の適切な樹脂を含み得る。このような樹脂としては、オレフィン系エラストマー、スチレン系エラストマーなどが挙げられる。好ましくは、エラストマー層はオレフィン系エラストマーを含む。エラストマー層がオレフィン系エラストマーを含むことによって、本発明の伸縮性積層体は、低光沢性により優れ得る。 The elastomer layer may contain any appropriate resin as long as the effects of the present invention are not impaired. Examples of such resins include olefin elastomers and styrene elastomers. Preferably, the elastomer layer includes an olefin-based elastomer. When the elastomer layer contains an olefin-based elastomer, the stretch laminate of the present invention can be more excellent in low gloss.
　オレフィン系エラストマーは、１種のみであっても良いし、２種以上のブレンドであっても良い。 Only one type of olefin-based elastomer may be used, or a blend of two or more types may be used.
　エラストマー層がオレフィン系エラストマーを含むことによって、熱安定性が向上し、例えば、本発明の伸縮性積層体を製造する際の熱劣化を抑制し得る。また、エラストマー層がオレフィン系エラストマーを含むことによって、保存安定性が向上し、本発明の伸縮性積層体を保存している間における物性値の変動を抑制し得る。 When the elastomer layer contains an olefin-based elastomer, the thermal stability can be improved, and for example, thermal degradation during the production of the stretchable laminate of the present invention can be suppressed. Moreover, when an elastomer layer contains an olefin-type elastomer, storage stability improves and the fluctuation | variation of the physical-property value can be suppressed during the preservation | save of the stretchable laminated body of this invention.
　また、エラストマー層がオレフィン系エラストマーを含むことによって、エラストマー層の製造における工程が簡素化でき、加工費を抑制し得る。これは、オレフィン系エラストマーを採用すると、エラストマー層の製造において用いる樹脂の種類を少なくして押出成形することが可能となり、マスターバッチを作製する必要がなくなり得るからである。 In addition, when the elastomer layer contains an olefin-based elastomer, the process for producing the elastomer layer can be simplified and the processing cost can be suppressed. This is because when an olefin-based elastomer is employed, 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 masterbatch.
　エラストマー層中のオレフィン系エラストマーの含有割合は、本発明の効果がより発現する点で、好ましくは５０重量％～１００重量％であり、より好ましくは７０重量％～１００重量％であり、さらに好ましくは８０重量％～１００重量％であり、特に好ましくは９０重量％～１００重量％であり、最も好ましくは９５重量％～１００重量％である。エラストマー層中のオレフィン系エラストマーの含有割合を上記範囲内に調整することにより、本発明の伸縮性積層体は、低光沢性により一層優れ得る。 The content of the olefin-based elastomer 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, from the viewpoint that the effects of the present invention are more manifested. Is 80% to 100% by weight, particularly preferably 90% to 100% by weight, and most preferably 95% to 100% by weight. By adjusting the content ratio of the olefin-based elastomer in the elastomer layer within the above range, the stretchable laminate of the present invention can be more excellent in low gloss.
　オレフィン系エラストマーとしては、例えば、オレフィンブロックコポリマー、オレフィンランダムコポリマー、エチレンコポリマー、プロピレンコポリマー、エチレンオレフィンブロックコポリマー、プロピレンオレフィンブロックコポリマー、エチレンオレフィンランダムコポリマー、プロピレンオレフィンランダムコポリマー、エチレンプロピレンランダムコポリマー、エチレン（１－ブテン）ランダムコポリマー、エチレン（１－ペンテン）オレフィンブロックコポリマー、エチレン（１－ヘキセン）ランダムコポリマー、エチレン（１－ヘプテン）オレフィンブロックコポリマー、エチレン（１－オクテン）オレフィンブロックコポリマー、エチレン（１－ノネン）オレフィンブロックコポリマー、エチレン（１－デセン）オレフィンブロックコポリマー、プロピレンエチレンオレフィンブロックコポリマー、エチレン（α－オレフィン）コポリマー、エチレン（α－オレフィン）ランダムコポリマー、エチレン（α－オレフィン）ブロックコポリマー、またはこれらの組み合わせ、などが挙げられる。 Examples of olefin elastomers 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 Fin block copolymers, propylene-ethylene-olefin block copolymers, ethylene (alpha-olefin) copolymers, ethylene (alpha-olefin) random copolymer, ethylene (alpha-olefin) block copolymers or combinations thereof, and the like.
　オレフィン系エラストマーとしては、その密度が、好ましくは０．８９０ｇ／ｃｍ３～０．８３０ｇ／ｃｍ３であり、より好ましくは０．８８８ｇ／ｃｍ３～０．８３５ｇ／ｃｍ３であり、さらに好ましくは０．８８６ｇ／ｃｍ３～０．８３５ｇ／ｃｍ３であり、特に好ましくは０．８８５ｇ／ｃｍ３～０．８４０ｇ／ｃｍ３であり、最も好ましくは０．８８５ｇ／ｃｍ３～０．８４５ｇ／ｃｍ３である。密度が上記範囲に収まるオレフィン系エラストマーをエラストマー層中に含有させることにより、本発明の伸縮性積層体は、低光沢性により一層優れ得る。 The olefin-based elastomer, its density, preferably 0.890g / cm 3 ~ 0.830g / cm 3, more preferably 0.888g / cm 3 ~ 0.835g / 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 0.885 g / cm 3 to 0.845 g / cm 3. 3 . By containing an olefin elastomer having a density within the above range in the elastomer layer, the stretchable laminate of the present invention can be further improved due to low gloss.
　オレフィン系エラストマーとしては、その２３０℃で２．１６ｋｇｆにおけるＭＦＲが、好ましくは１．０ｇ／１０分～２５．０ｇ／１０分であり、より好ましくは２．０ｇ／１０分～２３．０ｇ／１０分であり、さらに好ましくは２．０ｇ／１０分～２１．０ｇ／１０分であり、特に好ましくは２．０ｇ／１０分～２０．０ｇ／１０分であり、最も好ましくは２．０ｇ／１０分～１９．０ｇ／１０分である。ＭＦＲが上記範囲に収まるオレフィン系エラストマーをエラストマー層中に含有させることにより、本発明の伸縮性積層体は、低光沢性により一層優れ得る。 As the olefin elastomer, the MFR at 2.16 kgf at 230 ° C. is 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, most preferably 2.0 g / 10 min. Min to 19.0 g / 10 min. By including an olefin-based elastomer having an MFR within the above range in the elastomer layer, the stretchable laminate of the present invention can be further improved due to low gloss.
　オレフィン系エラストマーとしては、具体的には、好ましくは、α－オレフィン系エラストマーである。すなわち、２種以上のα－オレフィンの共重合体であって、エラストマー特性を有するものである。このようなα－オレフィン系エラストマーの中でも、より好ましくは、エチレン系エラストマー、プロピレン系エラストマー、１－ブテン系エラストマーから選ばれるいずれかである。このようなα－オレフィン系エラストマーをオレフィン系エラストマーとして採用することにより、本発明の伸縮性積層体は、低光沢性により一層優れ得る。 Specifically, the olefin elastomer is preferably an α-olefin elastomer. That is, it is a copolymer of two or more α-olefins and has elastomeric properties. Among such α-olefin elastomers, more preferably selected from ethylene elastomers, propylene elastomers, and 1-butene elastomers. By employing such an α-olefin elastomer as the olefin elastomer, the stretch laminate of the present invention can be further improved due to its low gloss.
　α－オレフィン系エラストマーの中でも、特に、エチレン系エラストマー、プロピレン系エラストマーが好ましい。エチレン系エラストマー、プロピレン系エラストマーをオレフィン系エラストマーとして採用することにより、本発明の伸縮性積層体は、低光沢性により一層優れ得る。 Among the α-olefin elastomers, ethylene elastomers and propylene elastomers are particularly preferable. By adopting an ethylene-based elastomer or a propylene-based elastomer as an olefin-based elastomer, the stretchable laminate of the present invention can be further improved due to low gloss.
　α－オレフィン系エラストマーとしては、市販品として入手することも可能である。このような市販品としては、例えば、三井化学株式会社製の「タフマー」（登録商標）シリーズの中のいくつか（例えば、タフマーＰＮ－３５６０等）、エクソンモービル社製の「ビスタマックス（Ｖｉｓｔａｍａｘｘ）」（登録商標）シリーズの中のいくつか（例えば、ビスタマックス６２０２、ビスタマックス７０１０等）が挙げられる。 The α-olefin elastomer can be obtained as a commercial product. Examples of such commercially available products include some of “Tuffmer” (registered trademark) series manufactured by Mitsui Chemicals, Inc. (for example, Tuffmer PN-3560, etc.), “Vistamaxx” manufactured by ExxonMobil, Inc. "(Registered trademark) series (for example, Vistamax 6202, Vistamax 7010, etc.).
　α－オレフィン系エラストマーは、好ましくは、メタロセン触媒を用いて製造されたものである。メタロセン触媒を用いて製造されたα－オレフィン系エラストマーを採用することにより、本発明の伸縮性積層体は、低光沢性により一層優れ得る。 The α-olefin elastomer is preferably produced using a metallocene catalyst. By employing an α-olefin elastomer produced using a metallocene catalyst, the stretch laminate of the present invention can be more excellent in low gloss.
　エラストマー層は、本発明の効果を損なわない範囲で、任意の適切な他の成分を含んでいても良い。このような他の成分としては、例えば、他のポリマー、粘着付与剤、可塑剤、劣化防止剤、顔料、染料、酸化防止剤、帯電防止剤、滑剤、発泡剤、熱安定化剤、光安定化剤、無機フィラー、有機フィラーなどが挙げられる。これらは、１種のみであっても、２種以上であっても良い。エラストマー層中の他の成分の含有割合は、好ましくは１０重量％以下であり、より好ましくは７重量％以下であり、さらに好ましくは５重量％以下であり、特に好ましくは２重量％以下であり、最も好ましくは１重量％以下である。 The elastomer layer may contain any appropriate other component as long as the effects of the present invention are not impaired. Examples of such 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.
　エラストマー層の厚みは、好ましくは８μｍ～４５０μｍであり、より好ましくは８μｍ～２２０μｍであり、さらに好ましくは８μｍ～１８０μｍであり、特に好ましくは８μｍ～９０μｍであり、最も好ましくは８μｍ～６７μｍである。エラストマー層の厚みをこのような範囲内に調整することにより、より優れたフィット性を有する伸縮性積層体を提供することが可能となる。 The thickness of the elastomer layer is preferably 8 μm to 450 μm, more preferably 8 μm to 220 μm, still more preferably 8 μm to 180 μm, particularly preferably 8 μm to 90 μm, and most preferably 8 μm to 67 μm. By adjusting the thickness of the elastomer layer within such a range, it is possible to provide a stretchable laminate having better fit.
≪オレフィン系樹脂層≫
　オレフィン系樹脂層の層数は、任意の適切な数を採用し得る。このようなオレフィン系樹脂層の層数は、好ましくは１層～５層であり、より好ましくは１層～３層であり、さらに好ましくは１層～２層であり、特に好ましくは２層（例えば、エラストマー層の両側に１層ずつ）である。 ≪Olefin resin layer≫
Any appropriate number can be adopted as the number of olefin-based resin layers. The number of such olefin-based resin layers is preferably 1 to 5 layers, more preferably 1 to 3 layers, still more preferably 1 to 2 layers, and particularly preferably 2 layers ( For example, one layer on each side of the elastomer layer).
　オレフィン系樹脂層の層数が複数である場合、それらの各層は、全て同種の層であっても良いし、少なくとも２層が異種の層であっても良い。 When there are a plurality of olefin-based resin layers, all of these layers may be the same type of layers, or at least two layers may be different types of layers.
　オレフィン系樹脂層は、本発明の効果を損なわない範囲で任意の適切な樹脂を含み得る。オレフィン系樹脂層は、好ましくは、非エラストマー性オレフィン系樹脂を含む。非エラストマー性オレフィン系樹脂とは、エラストマー性オレフィン系樹脂ではないオレフィン系樹脂を意味する。オレフィン系樹脂層が非エラストマー性オレフィン系樹脂を含むことによって、本発明の伸縮性積層体は、低光沢性により優れ得るとともに、耐ブロッキング性により優れ得る。 The olefin-based resin layer may contain any appropriate resin as long as the effects of the present invention are not impaired. The olefin resin layer preferably contains a non-elastomeric olefin resin. A non-elastomeric olefin resin means an olefin resin that is not an elastomeric olefin resin. When the olefin resin layer contains a non-elastomeric olefin resin, the stretchable laminate of the present invention can be excellent in low gloss and excellent in blocking resistance.
　非エラストマー性オレフィン系樹脂は、１種のみであっても良いし、２種以上のブレンドや共重合体であっても良い。 The non-elastomeric olefin resin may be only one kind, or may be a blend or copolymer of two or more kinds.
　オレフィン系樹脂層中の非エラストマー性オレフィン系樹脂の含有割合は、本発明の効果がより発現する点で、好ましくは５０重量％～１００重量％であり、より好ましくは７０重量％～１００重量％であり、さらに好ましくは８０重量％～１００重量％であり、特に好ましくは９０重量％～１００重量％であり、最も好ましくは９５重量％～１００重量％である。オレフィン系樹脂層中の非エラストマー性オレフィン系樹脂の含有割合を上記範囲内に調整することにより、本発明の伸縮性積層体は、低光沢性により一層優れ得るとともに、耐ブロッキング性により一層優れ得る。 The content ratio of the non-elastomeric olefin resin in the olefin resin layer is preferably 50% by weight to 100% by weight, more preferably 70% by weight to 100% by weight, from the viewpoint that the effect of the present invention is more manifested. More preferably, it is 80% by weight to 100% by weight, particularly preferably 90% by weight to 100% by weight, and most preferably 95% by weight to 100% by weight. By adjusting the content ratio of the non-elastomeric olefin resin in the olefin resin layer within the above range, the stretch laminate of the present invention can be further improved by low gloss and further improved by blocking resistance. .
　非エラストマー性オレフィン系樹脂としては、例えば、α－オレフィンのホモポリマー、２種類以上のα－オレフィンの共重合体、ブロックポリプロピレン、ランダムポリプロピレン、１種または２種以上のα－オレフィンと他のビニルモノマーの共重合体などが挙げられる。共重合体における共重合の形態としては、例えば、ブロック形態やランダム形態が挙げられる。 Examples of non-elastomeric olefin resins include α-olefin homopolymers, copolymers of two or more α-olefins, block polypropylene, random polypropylene, one or more α-olefins and other vinyls. Examples thereof include a monomer copolymer. Examples of the copolymerization form in the copolymer include a block form and a random form.
　α－オレフィンとしては、例えば、炭素原子数２～１２のα－オレフィンが挙げられる。このようなα－オレフィンとしては、例えば、エチレン、プロピレン、１－ブテン、４－メチル－１－ペンテンなどが挙げられる。 Examples of α-olefins include α-olefins having 2 to 12 carbon atoms. Examples of such α-olefins include ethylene, propylene, 1-butene and 4-methyl-1-pentene.
　α－オレフィンのホモポリマーとしては、例えば、ポリエチレン（ＰＥ）、ホモポリプロピレン（ＰＰ）、ポリ（１－ブテン）、ポリ（４－メチル－１－ペンテン）などが挙げられる。 Examples of the α-olefin homopolymer include polyethylene (PE), homopolypropylene (PP), poly (1-butene), poly (4-methyl-1-pentene), and the like.
　ポリエチレン（ＰＥ）としては、例えば、低密度ポリエチレン（ＬＤＰＥ）、直鎖状低密度ポリエチレン（ＬＬＤＰＥ）、中密度ポリエチレン（ＭＤＰＥ）、高密度ポリエチレン（ＨＤＰＥ）などが挙げられる。 Examples of polyethylene (PE) include low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), and high density polyethylene (HDPE).
　ホモポリプロピレン（ＰＰ）の構造は、アイソタクチック、アタクチック、シンジオタクチックのいずれであってもよい。 The structure of homopolypropylene (PP) may be any of isotactic, atactic and syndiotactic.
　本発明の効果をより発現させ得る点で、非エラストマー性オレフィン系樹脂は、好ましくは、α－オレフィンのホモポリマーを含み、より好ましくは、ポリエチレン（ＰＥ）、ホモポリプロピレン（ＰＰ）から選ばれる少なくとも１種を含み、さらに好ましくは、高密度ポリエチレン（ＨＤＰＥ）、ホモポリプロピレン（ＰＰ）から選ばれる少なくとも１種を含む。非エラストマー性オレフィン系樹脂が、高密度ポリエチレン（ＨＤＰＥ）、ホモポリプロピレン（ＰＰ）から選ばれる少なくとも１種を含むことにより、低光沢性により一層優れた伸縮性積層体を提供することができる。非エラストマー性オレフィン系樹脂中のα－オレフィンのホモポリマーの含有割合は、本発明の効果をより発現させ得る点で、好ましくは５０重量％～１００重量％であり、より好ましくは７０重量％～１００重量％であり、より好ましくは８０重量％～１００重量％であり、さらに好ましくは９０重量％～１００重量％であり、特に好ましくは９５重量％～１００重量％であり、最も好ましくは実質的に１００重量％である。 The non-elastomeric olefin-based resin preferably includes an α-olefin homopolymer, more preferably at least selected from polyethylene (PE) and homopolypropylene (PP), from the viewpoint that the effects of the present invention can be further expressed. 1 type is included, More preferably, at least 1 type chosen from a high density polyethylene (HDPE) and a homo polypropylene (PP) is included. By including at least one selected from high-density polyethylene (HDPE) and homopolypropylene (PP), the non-elastomeric olefin-based resin can provide a stretch laminate that is more excellent in low gloss. The content ratio of the homopolymer of α-olefin in the non-elastomeric olefin resin is preferably 50% by weight to 100% by weight, more preferably 70% by weight or more, from the viewpoint that the effect of the present invention can be expressed more. 100 wt%, more preferably 80 wt% to 100 wt%, even more preferably 90 wt% to 100 wt%, particularly preferably 95 wt% to 100 wt%, most preferably substantially 100% by weight.
　２種類以上のα－オレフィンの共重合体としては、例えば、エチレン／プロピレン共重合体、エチレン／１－ブテン共重合体、エチレン／プロピレン／１－ブテン共重合体、エチレン／炭素原子数５～１２のα－オレフィン共重合体、プロピレン／炭素原子数５～１２のα－オレフィン共重合体などが挙げられる。 Examples of the copolymer of two or more kinds of α-olefins include, for example, an ethylene / propylene copolymer, an ethylene / 1-butene copolymer, an ethylene / propylene / 1-butene copolymer, an ethylene / carbon number of 5 to 12 α-olefin copolymers, propylene / α-olefin copolymers having 5 to 12 carbon atoms, and the like.
　１種または２種以上のα－オレフィンと他のビニルモノマーの共重合体としては、例えば、エチレン／酢酸ビニル共重合体、エチレン／アクリル酸アルキルエステル共重合体、エチレン／メタクリル酸アルキルエステル共重合体、エチレン－非共役ジエン共重合体などが挙げられる。 Examples of the copolymer of one or more α-olefins and other vinyl monomers include, for example, ethylene / vinyl acetate copolymer, ethylene / acrylic acid alkyl ester copolymer, ethylene / methacrylic acid alkyl ester copolymer And an ethylene-nonconjugated diene copolymer.
　非エラストマー性オレフィン系樹脂は市販品を用いてもよい。 A commercially available non-elastomeric olefin resin may be used.
　オレフィン系樹脂層は、本発明の効果を損なわない範囲で、任意の適切な他の成分を含んでいても良い。このような他の成分としては、例えば、離型剤、紫外線吸収剤、耐熱安定化剤、充填剤、滑剤、着色剤（染料など）、酸化防止剤、目ヤニ防止剤、アンチブロッキング剤、発泡剤、ポリエチレンイミンなどが挙げられる。これらは、１種のみであっても、２種以上であっても良い。オレフィン系樹脂層中の他の成分の含有割合は、好ましくは１０重量％以下であり、より好ましくは７重量％以下であり、さらに好ましくは５重量％以下であり、特に好ましくは２重量％以下であり、最も好ましくは１重量％以下である。 The olefin-based resin layer may contain any appropriate other component as long as the effects of the present invention are not impaired. Examples of such other components include mold release agents, ultraviolet absorbers, heat stabilizers, fillers, lubricants, colorants (dyes, etc.), antioxidants, anti-smudge agents, anti-blocking agents, and foams. Agents, polyethyleneimine and the like. These may be only one type or two or more types. The content of other components in the olefin resin 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. And most preferably 1% by weight or less.
　離型剤としては、例えば、脂肪酸アマイド系離型剤、シリコーン系離型剤、フッ素系離型剤、長鎖アルキル系離型剤等が挙げられる。剥離性とブリードアウトによる汚染性のバランスにより優れた剥離層を形成し得るという観点からは、好ましくは脂肪酸アマイド系離型剤であり、より好ましくは飽和脂肪酸ビスアマイドである。離型剤の含有量は、任意の適切な含有量を採用し得る。代表的には、オレフィン系樹脂層中の樹脂成分（好ましくは、非エラストマー性オレフィン系樹脂）に対して、好ましくは０．０１重量％～５重量％である。 Examples of the release agent include fatty acid amide release agents, silicone release agents, fluorine release agents, and long-chain alkyl release agents. From the viewpoint that an excellent release layer can be formed due to a balance between releasability and contamination due to bleed-out, a fatty acid amide release agent is preferable, and a saturated fatty acid bisamide is more preferable. Arbitrary appropriate content can be employ | adopted for content of a mold release agent. Typically, it is preferably 0.01% by weight to 5% by weight with respect to the resin component in the olefin resin layer (preferably a non-elastomeric olefin resin).
　紫外線吸収剤としては、例えば、ベンゾトリアゾール系化合物、ベンゾフェノン系化合物、ベンゾエート系化合物等が挙げられる。紫外線吸収剤の含有量は、成形時にブリードアウトしない限りにおいて、任意の適切な含有量を採用し得る。代表的には、オレフィン系樹脂層中の樹脂成分（好ましくは、非エラストマー性オレフィン系樹脂）に対して、好ましくは０．０１重量％～５重量％である。 Examples of the ultraviolet absorber include benzotriazole compounds, benzophenone compounds, benzoate compounds, and the like. Any appropriate content can be adopted as the content of the ultraviolet absorber as long as it does not bleed out during molding. Typically, it is preferably 0.01% by weight to 5% by weight with respect to the resin component in the olefin resin layer (preferably a non-elastomeric olefin resin).
　耐熱安定化剤としては、例えば、ヒンダードアミン系化合物、リン系化合物およびシアノアクリレート系化合物等が挙げられる。耐熱安定化剤の含有量は、成形時にブリードアウトしない限りにおいて、任意の適切な含有量を採用し得る。代表的には、オレフィン系樹脂層中の樹脂成分（好ましくは、非エラストマー性オレフィン系樹脂）に対して、好ましくは０．０１重量％～５重量％である。 Examples of the heat stabilizer include hindered amine compounds, phosphorus compounds, and cyanoacrylate compounds. Any appropriate content can be adopted as the content of the heat-resistant stabilizer as long as it does not bleed out during molding. Typically, it is preferably 0.01% by weight to 5% by weight with respect to the resin component in the olefin resin layer (preferably a non-elastomeric olefin resin).
　充填剤としては、例えば、タルク、酸化チタン、酸化カルシウム、酸化マグネシウム、酸化亜鉛、酸化チタン、炭酸カルシウム、シリカ、クレー、マイカ、硫酸バリウム、ウィスカー、水酸化マグネシウム等の無機充填剤が挙げられる。充填剤の平均粒径は、好ましくは、０．１μｍ～２０μｍである。充填剤の含有量は、任意の適切な含有量を採用し得る。代表的には、オレフィン系樹脂層中の樹脂成分（好ましくは、非エラストマー性オレフィン系樹脂）に対して、好ましくは１重量％～２００重量％である。 Examples of the filler include inorganic fillers such as talc, titanium oxide, calcium oxide, magnesium oxide, zinc oxide, titanium oxide, calcium carbonate, silica, clay, mica, barium sulfate, whisker, and magnesium hydroxide. The average particle diameter of the filler is preferably 0.1 μm to 20 μm. Arbitrary appropriate content can be employ | adopted for content of a filler. Typically, the amount is preferably 1% by weight to 200% by weight with respect to the resin component (preferably non-elastomeric olefin resin) in the olefin resin layer.
　オレフィン系樹脂層の厚みは、好ましくは２μｍ～５０μｍであり、より好ましくは２μｍ～３０μｍであり、さらに好ましくは２μｍ～２０μｍであり、特に好ましくは２μｍ～１０μｍであり、最も好ましくは２μｍ～８μｍである。オレフィン系樹脂層の厚みをこのような範囲内に調整することにより、おむつやマスクなどの衛生用品等の物品に用いる部材として用いやすくなる。 The thickness of the olefin resin layer is preferably 2 μm to 50 μm, more preferably 2 μm to 30 μm, still more preferably 2 μm to 20 μm, particularly preferably 2 μm to 10 μm, and most preferably 2 μm to 8 μm. is there. By adjusting the thickness of the olefin-based resin layer within such a range, it becomes easy to use as a member used for articles such as sanitary goods such as diapers and masks.
≪伸縮性積層体の製造≫
　本発明の伸縮性積層体を製造する方法としては、エラストマー層の少なくとも一方の側にオレフィン系樹脂層を有するような構成を構築できる方法であれば、本発明の効果を損なわない範囲で、任意の適切な方法を採用し得る。 << Manufacture of stretchable laminate >>
As a method for producing the stretchable laminate of the present invention, any method can be used as long as the structure having an olefin-based resin layer on at least one side of the elastomer layer can be constructed without impairing the effects of the present invention. Any suitable method can be employed.
　本発明の伸縮性積層体を製造する方法としては、代表的には、多層押し出しＴダイ成形機を用いて積層体を成型して製造する方法が挙げられる。例えば、オレフィン系樹脂層／エラストマー層／オレフィン系樹脂層の積層構成からなる伸縮性積層体を製造する場合は、３層押し出しＴダイ成形機を用いて、オレフィン系樹脂層の成型材料／エラストマー層の成型材料／オレフィン系樹脂層の成型材料を、Ｔダイから共押出して一体化させ、その後、ロール状に巻き取ることによって、伸縮性積層体のロール体を製造することができる。Ｔダイを用いるＴダイ法以外に、インフレーション法なども採用し得る。 As a method for producing the stretchable laminate of the present invention, a method of producing a laminate by using a multilayer extrusion T-die molding machine is typically mentioned. For example, in the case of producing a stretchable laminate comprising a laminate structure of an olefin resin layer / elastomer layer / olefin resin layer, a molding material / elastomer layer of the olefin resin layer using a three-layer extrusion T-die molding machine The roll material of the stretchable laminate can be manufactured by co-extrusion of the molding material / the molding material of the olefin resin layer from the T-die and integrating them, and then winding up into a roll shape. In addition to the T-die method using a T-die, an inflation method or the like can be employed.
≪本発明の伸縮性積層体の耐ブロッキング性能≫
　本発明の伸縮性積層体は、エラストマー層の少なくとも一方の側にオレフィン系樹脂層を有する。本発明の伸縮性積層体は、このようなオレフィン系樹脂層を有することにより、好ましくは、優れた耐ブロッキング性能を発現し得る。特に、本発明の伸縮性積層体が、エラストマー層の両側にオレフィン系樹脂層を有する場合には、非常に優れた耐ブロッキング性能を発現し得る。 ≪Blocking resistance of the stretch laminate of the present invention≫
The stretchable laminate of the present invention has an olefin resin layer on at least one side of the elastomer layer. By having such an olefin resin layer, the stretchable laminate of the present invention can preferably exhibit excellent anti-blocking performance. In particular, when the stretchable laminate of the present invention has an olefin-based resin layer on both sides of the elastomer layer, it can exhibit very excellent blocking resistance.
　オレフィン系樹脂層を最外層に有さない伸縮性積層体、特に、エラストマー層を両最外層に有する伸縮性積層体は、ロール体とした場合に、エラストマー層同士が容易にブロッキングしてしまい、巻戻しが困難になりやすい。本発明の伸縮性積層体は、エラストマー層の少なくとも一方の側にオレフィン系樹脂層を有するので、ロール体とした場合に、ブロッキングを抑制でき、巻戻しを容易に行い得る。 Stretch laminates that do not have an olefin-based resin layer as the outermost layer, in particular, stretch laminates that have an elastomer layer in both outermost layers, when made into a roll body, the elastomer layers easily block, Rewinding tends to be difficult. Since the stretchable laminate of the present invention has an olefin resin layer on at least one side of the elastomer layer, blocking can be suppressed and rewinding can be easily performed when a roll body is used.
　本発明の伸縮性積層体は、オレフィン系樹脂層中に前述したような充填剤を含むことにより、より優れた耐ブロッキング性能を発現し得る。しかしながら、本発明の伸縮性積層体は、オレフィン系樹脂層中に前述したような充填剤を含まなくても、優れた耐ブロッキング性能を発現し得る。 The stretchable laminate of the present invention can exhibit better blocking resistance by including the filler as described above in the olefin resin layer. However, the stretchable laminate of the present invention can exhibit excellent anti-blocking performance even when the olefin resin layer does not contain the filler as described above.
≪本発明の伸縮性積層体の用途≫
　本発明の伸縮性積層体は、本発明の効果を有効に利用できる任意の適切な物品に用いることができる。すなわち、本発明の物品は、本発明の伸縮性積層体を含む。このような物品としては、代表的には、例えば、衛生用品などが挙げられる。このような衛生用品としては、例えば、おむつ（特に、イヤー（耳）部分や、腰周りや脚周りの開口部分の伸縮性部材（ウエストバンドやギャザー）として本発明の伸縮性積層体が使用されたおむつ）、サポーター、マスクなどが挙げられる。 ≪Use of stretch laminate of the present invention≫
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, for example, the stretchable laminate of the present invention is used as a stretchable member (waistband or gathers) in diapers (particularly the ear (ear) portion, waist or leg opening). Diapers), supporters and masks.
　以下、実施例により本発明を具体的に説明するが、本発明はこれら実施例になんら限定されるものではない。なお、実施例等における、試験および評価方法は以下のとおりである。また、特に断りがない限り、部は重量部を意味し、％は重量％を意味する。 Hereinafter, the present invention will be specifically described by way of examples, but the present invention is not limited to these examples. In addition, the test and evaluation method in an Example etc. are as follows. Moreover, unless otherwise indicated, a part means a weight part and% means weight%.
＜ブロッキング性の評価＞
　実施例および比較例にて得られた伸縮性積層体または積層体のロール体を幅方向で３０ｍｍに切断し、２３℃×５０ＲＨ％の状態で２４時間保存した後、巻戻速度３００ｍｍ／ｍｉｎにて巻き戻した。その巻き戻しの際に、伸縮性積層体または積層体が破断したものを×、破断しなかったものを○とした。 <Evaluation of blocking properties>
The elastic laminates or laminate rolls obtained in Examples and Comparative Examples were cut to 30 mm in the width direction and stored for 24 hours in a state of 23 ° C. × 50 RH%, and then the unwinding speed was 300 mm / min. And rewinded. At the time of rewinding, the stretched laminate or the laminate that was broken was marked with ×, and the one that was not broken was marked with ○.
＜６０°光沢度値＞
　実施例および比較例にて得られた伸縮性積層体または積層体の６０°光沢度値をＪＩＳ　Ｚ　８７４１に準拠して測定した。具体的には、ＢＹＫ－Ｇａｒｄｎｅｒ　ＧｍｂＨから入手できるｍｉｃｒｏ－ＴＲＩ－ｇｌｏｓｓ，Ｃａｔ．Ｎｏ．４４４６を用いて測定を行った。１０回の６０°光沢度値測定を行い、これらの１０回の測定の平均を、本発明における６０°光沢度値とした。 <60 ° gloss value>
The 60 ° gloss value of the stretchable laminates or laminates obtained in Examples and Comparative Examples was measured according to JIS Z 8741. Specifically, micro-TRI-gloss, Cat., Available from BYK-Gardner GmbH. No. Measurements were made using 4446. Ten 60 ° gloss values were measured, and the average of these 10 measurements was taken as the 60 ° gloss value in the present invention.
＜エラスティック性試験＞
　実施例および比較例にて得られた伸縮性積層体または積層体を幅方向で３０ｍｍに切断し、長手方向にチャック間４０ｍｍにて引張試験機（島津製作所製：ＡＧ－２０ｋＮＧ）にセットし、引張速度３００ｍｍ／ｍｉｎにて１００％伸長した。１００％伸長後、伸長状態にて固定し、１０分間室温にて保持した。１０分後、伸長状態を解放し、初期チャック間距離４０ｍｍ（Ａ）、試験後フィルム長さ（４０＋α）ｍｍ（Ｂ）を計測後、［｛（Ｂ）－（Ａ）｝／（Ａ）］×１００にて変動率を計測した。変動率が２０％を超えたものを×、２０％以下のものを○とした。 <Elasticity test>
The stretchable laminates or laminates obtained in the examples and comparative examples were cut to 30 mm in the width direction, and set in a tensile tester (manufactured by Shimadzu Corporation: AG-20kNG) with a chuck distance of 40 mm in the longitudinal direction. The film was stretched 100% at a tensile speed of 300 mm / min. After 100% elongation, it was fixed in the stretched state and kept at room temperature for 10 minutes. Ten minutes later, the stretched state is released, and after measuring the initial chuck distance 40 mm (A) and the post-test film length (40 + α) mm (B), [{(B)-(A)} / (A)] The variation rate was measured at × 100. Those with a variation rate exceeding 20% were marked with x, and those with a variation rate of 20% or less were marked with ◯.
＜成形条件＞
　実施例および比較例において、３種３層（Ａ層／Ｂ層／Ｃ層）押し出しＴダイ成形機を用いて伸縮性積層体または積層体を成形した。その押出温度は以下の条件にて実施した。
　Ａ層：２００℃
　Ｂ層：２００℃
　Ｃ層：２００℃
　ダイス温度：２００℃
　Ｔダイから共押出成形して一体化させ、得られた伸縮性積層体または積層体が十分に固化した後に、ロール形状に巻き取ることによってロール体とした。
　事前伸長する場合は、ロール体から繰り出した伸縮性積層体または積層体を幅方向に４００％事前伸長させた。 <Molding conditions>
In Examples and Comparative Examples, stretchable laminates or laminates were molded using a three-type three-layer (A layer / B layer / C layer) extrusion T-die molding machine. The extrusion temperature was carried out under the following conditions.
A layer: 200 ° C
B layer: 200 ° C
C layer: 200 ° C
Die temperature: 200 ° C
After the T-die was co-extruded and integrated, and the resulting stretchable laminate or laminate was sufficiently solidified, it was rolled into a roll shape.
In the case of pre-stretching, the stretchable laminate or laminate that was drawn out from the roll body was pre-stretched 400% in the width direction.
＜Ｓ－Ｓデータ測定方法＞
　実施例および比較例にて得られた伸縮性積層体または積層体を幅方向で３０ｍｍに切断し、長手方向にチャック間４０ｍｍにて引張試験機（島津製作所製：ＡＧ－２０ｋＮＧ）にセットし、引張速度１０００ｍｍ／ｍｉｎにて４００％まで伸長した後、引張速度１０００ｍｍ／ｍｉｎにて０％まで伸長を戻した。 <SS data measurement method>
The stretchable laminates or laminates obtained in the examples and comparative examples were cut to 30 mm in the width direction, and set in a tensile tester (manufactured by Shimadzu Corporation: AG-20kNG) with a chuck distance of 40 mm in the longitudinal direction. After stretching to 400% at a pulling speed of 1000 mm / min, the stretching was returned to 0% at a pulling speed of 1000 mm / min.
＜ヒステリシスデータ測定方法＞
　実施例および比較例にて得られた伸縮性積層体または積層体を幅方向で３０ｍｍに切断し、長手方向にチャック間４０ｍｍにて引張試験機（島津製作所製：ＡＧ－２０ｋＮＧ）にセットし、引張速度５００ｍｍ／ｍｉｎにて１００％まで伸長した後、引張速度５００ｍｍ／ｍｉｎにて０％まで伸長を戻した。 <Hysteresis data measurement method>
The stretchable laminates or laminates obtained in the examples and comparative examples were cut to 30 mm in the width direction, and set in a tensile tester (manufactured by Shimadzu Corporation: AG-20kNG) with a chuck distance of 40 mm in the longitudinal direction. After stretching to 100% at a pulling speed of 500 mm / min, the stretching was returned to 0% at a pulling speed of 500 mm / min.
〔実施例１〕
　非エラストマー性オレフィン系樹脂としてＨＤＰＥ（東ソー社製、商品名：ニポロンハード１０００）１００重量部を押出機のＡ層に、オレフィン系エラストマーとしてＥＰＲ（エクソンモービル社製、商品名：ビスタマックス６２０２）１００重量部を押出機のＢ層に、非エラストマー性オレフィン系樹脂としてＨＤＰＥ（東ソー社製、商品名：ニポロンハード１０００）１００重量部を押出機のＣ層に投入し、Ａ層／Ｂ層／Ｃ層＝２μｍ／３６μｍ／２μｍ、計４０μｍの厚みの伸縮性積層体（１）を押し出した。
　結果を表１に示した。
　得られた伸縮性積層体（１）を、幅方向に４００％の倍率で事前伸長した。
　伸縮性積層体（１）の事前伸長時のＳ－Ｓデータを測定すると図２のようになった。また、伸縮性積層体（１）の事前伸長後のヒステリシスループを測定すると図３のようになった。 [Example 1]
100 parts by weight of HDPE (trade name: Nipolon Hard 1000) as a non-elastomeric olefin resin is used as the A layer of the extruder and 100 parts by weight of EPR (product name: Vistamax 6202) as an olefin elastomer. Parts into the B layer of the extruder, and 100 parts by weight of HDPE (trade name: Nipolon Hard 1000, manufactured by Tosoh Corporation) as the non-elastomeric olefin resin is put into the C layer of the extruder, and A layer / B layer / C layer = The stretchable laminate (1) having a thickness of 2 μm / 36 μm / 2 μm and a total thickness of 40 μm was extruded.
The results are shown in Table 1.
The obtained stretchable laminate (1) was pre-stretched in the width direction at a magnification of 400%.
The SS data at the time of pre-extension of the stretchable laminate (1) was measured as shown in FIG. Further, when the hysteresis loop after the pre-extension of the stretchable laminate (1) was measured, it was as shown in FIG.
〔実施例２〕
　非エラストマー性オレフィン系樹脂としてＨＤＰＥ（Ｂａｓｅｌｌ社製、商品名：５２５１８）を使用した以外は実施例１と同様にして、伸縮性積層体（２）を得た。
　結果を表１に示した。 [Example 2]
A stretchable laminate (2) was obtained in the same manner as in Example 1 except that HDPE (manufactured by Basell, trade name: 52518) was used as the non-elastomeric olefin resin.
The results are shown in Table 1.
〔実施例３〕
　非エラストマー性オレフィン系樹脂としてＰＰ（日本ポリプロ社製、商品名：ノバテックＰＰ　ＢＣ０３Ｃ）を使用した以外は実施例１と同様にして、伸縮性積層体（３）を得た。
　結果を表１に示した。 Example 3
A stretchable laminate (3) was obtained in the same manner as in Example 1 except that PP (manufactured by Nippon Polypro Co., Ltd., trade name: Novatec PP BC03C) was used as the non-elastomeric olefin resin.
The results are shown in Table 1.
〔実施例４〕
　オレフィン系エラストマーとしてＥＰＲ（エクソンモービル社製、商品名：ビスタマックス６２０２）９５重量部、および、白色顔料として（酸化チタン、Ｄｕｐｏｎｔ製、商品名：Ｔｉ－Ｐｕｒｅ　Ｒ１０３）５重量部を配合したものをＢ層に投入した以外は実施例１と同様にして、伸縮性積層体（４）を得た。
　結果を表１に示した。 Example 4
A blend of 95 parts by weight of EPR (trade name: Vistamax 6202, manufactured by ExxonMobil Corp.) as an olefin elastomer and 5 parts by weight of (titanium oxide, manufactured by Dupont, trade name: Ti-Pure R103) as a white pigment. A stretchable laminate (4) was obtained in the same manner as in Example 1 except that it was added to the B layer.
The results are shown in Table 1.
〔実施例５〕
　Ａ層／Ｂ層／Ｃ層＝４μｍ／６４μｍ／４μｍ、計７２μｍの厚みとした以外は実施例１と同様にして、伸縮性積層体（５）を得た。
　結果を表１に示した。 Example 5
A stretchable laminate (5) was obtained in the same manner as in Example 1 except that the thickness of A layer / B layer / C layer = 4 μm / 64 μm / 4 μm, 72 μm in total.
The results are shown in Table 1.
〔実施例６〕
　Ａ層／Ｂ層／Ｃ層＝２μｍ／２０μｍ／２μｍ、計２４μｍの厚みとした以外は実施例１と同様にして、伸縮性積層体（６）を得た。
　結果を表１に示した。 Example 6
A stretchable laminate (6) was obtained in the same manner as in Example 1 except that A layer / B layer / C layer = 2 μm / 20 μm / 2 μm, and the total thickness was 24 μm.
The results are shown in Table 1.
〔実施例７〕
　Ａ層／Ｂ層／Ｃ層＝８μｍ／２０μｍ／８μｍ、計３６μｍの厚みとした以外は実施例１と同様にして、伸縮性積層体（７）を得た。
　結果を表１に示した。 Example 7
A stretchable laminate (7) was obtained in the same manner as in Example 1 except that A layer / B layer / C layer = 8 μm / 20 μm / 8 μm, and the total thickness was 36 μm.
The results are shown in Table 1.
〔実施例８〕
　非エラストマー性オレフィン系樹脂としてＨＤＰＥ（東ソー社製、商品名：ニポロンハード１０００）８０重量部、ＰＰ（日本ポリプロ社製、商品名：ノバテックＰＰ　ＢＣ０３Ｃ）２０重量部を配合したものを使用した以外は実施例１と同様にして、伸縮性積層体（８）を得た。
　結果を表１に示した。 Example 8
Except for using non-elastomeric olefin resin blended with 80 parts by weight of HDPE (manufactured by Tosoh Corporation, trade name: Nipolon Hard 1000) and 20 parts by weight of PP (trade name: Novatec PP BC03C, made by Nippon Polypro) In the same manner as in Example 1, an elastic laminate (8) was obtained.
The results are shown in Table 1.
〔実施例９〕
　オレフィン系エラストマーとしてＥＰＲ（エクソンモービル社製、商品名：ビスタマックス６２０２）７０重量部、タフマーＰＮ－３５６０（三井化学株式会社製）３０重量部を配合したものをＢ層に投入した以外は実施例１と同様にして、伸縮性積層体（９）を得た。
　結果を表１に示した。 Example 9
Example except that 70 parts by weight of EPR (ExxonMobil Corp., trade name: Vistamax 6202) and 30 parts by weight of Tuffmer PN-3560 (Mitsui Chemicals Co., Ltd.) as olefin elastomer were added to the B layer. In the same manner as in Example 1, an elastic laminate (9) was obtained.
The results are shown in Table 1.
〔実施例１０〕
　オレフィン系エラストマーとしてＥＰＲ（エクソンモービル社製、商品名：ビスタマックス７０１０）：１００重量部を使用した以外は実施例１と同様にして、伸縮性積層体（１０）を得た。
　結果を表１に示した。 Example 10
A stretchable laminate (10) was obtained in the same manner as in Example 1 except that 100 parts by weight of EPR (exxon mobile, trade name: Vistamax 7010) was used as the olefin elastomer.
The results are shown in Table 1.
〔実施例１１〕
　Ｃ層に何も投入しなかった以外は実施例１と同様にして、伸縮性積層体（１１）を得た。
　結果を表１に示した。 Example 11
A stretchable laminate (11) was obtained in the same manner as in Example 1 except that nothing was added to the C layer.
The results are shown in Table 1.
〔実施例１２〕
　オレフィン系エラストマーの代わりにスチレン系エラストマーとしてＳＩＳ（日本ゼオン株式会社製、商品名：クインタック３３９９）：１００重量部を使用した以外は実施例１と同様にして、伸縮性積層体（１２）を得た。
　結果を表１に示した。 Example 12
A stretchable laminate (12) was prepared in the same manner as in Example 1 except that 100 parts by weight of SIS (manufactured by Nippon Zeon Co., Ltd., trade name: QUINTAC 3399) was used as a styrene elastomer instead of the olefin elastomer. Obtained.
The results are shown in Table 1.
〔実施例１３〕
　オレフィン系エラストマーの代わりにスチレン系エラストマーとしてＳＢＳ（クレイトンポリマー製、商品名：クレイトン　Ｄ１１９１）：１００重量部を使用した以外は実施例１と同様にして、伸縮性積層体（１３）を得た。
　結果を表１に示した。 Example 13
A stretchable laminate (13) was obtained in the same manner as in Example 1 except that 100 parts by weight of SBS (manufactured by Kraton Polymer, trade name: Kraton D1191): 100 parts by weight was used as the styrene elastomer instead of the olefin elastomer.
The results are shown in Table 1.
〔比較例１〕
　Ａ層およびＢ層およびＣ層の全てにおいて非エラストマー性オレフィン系樹脂としてＨＤＰＥ（東ソー社製、商品名：ニポロンハード１０００）：１００重量部を使用した以外は実施例１と同様にして、積層体（Ｃ１）を得た。
　結果を表１に示した。 [Comparative Example 1]
In all of the A layer, the B layer, and the C layer, a laminate (in the same manner as in Example 1 except that HDPE (trade name: Nipolon Hard 1000): 100 parts by weight was used as a non-elastomeric olefin resin. C1) was obtained.
The results are shown in Table 1.
〔比較例２〕
　Ａ層およびＢ層およびＣ層の全てにおいてスチレン系エラストマーとしてＳＩＳ（日本ゼオン株式会社製、商品名：クインタック３３９９）：１００重量部を使用した以外は実施例１と同様にして、積層体（Ｃ２）を得た。
　結果を表１に示した。 [Comparative Example 2]
In all of the A layer, the B layer and the C layer, the laminate ( C2) was obtained.
The results are shown in Table 1.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　本発明の伸縮性積層体は、本発明の効果を有効に利用できる任意の適切な物品に用いることができる。すなわち、本発明の物品は、本発明の伸縮性積層体を含む。このような物品としては、代表的には、例えば、衛生用品などが挙げられる。このような衛生用品としては、例えば、おむつ（特に、イヤー（耳）部分や、腰周りや脚周りの開口部分の伸縮性部材（ウエストバンドやギャザー）として本発明の伸縮性積層体が使用されたおむつ）、サポーター、マスクなどが挙げられる。 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, for example, the stretchable laminate of the present invention is used as a stretchable member (waistband or gathers) in diapers (particularly the ear (ear) portion, waist or leg opening). Diapers), supporters and masks.
１００　　伸縮性積層体
１０　　　エラストマー層
２０ａ　　オレフィン系樹脂層２０
２０ｂ　　オレフィン系樹脂層２０ 100 Elastic laminate 10 Elastomer layer 20a Olefin resin layer 20
20b Olefin resin layer 20

Claims (23)

  1. 　エラストマー層の少なくとも一方の側にオレフィン系樹脂層を有する伸縮性積層体であって、
    　該伸縮性積層体の６０°光沢度値が１０以下である、
    　伸縮性積層体。     An elastic laminate having an olefinic resin layer on at least one side of the elastomer layer,
    The 60 ° gloss value of the stretchable laminate is 10 or less,
    Elastic laminate.
  2. 　前記エラストマー層の両側に前記オレフィン系樹脂層を有する、請求項１に記載の伸縮性積層体。 The stretchable laminate according to claim 1, comprising the olefin resin layer on both sides of the elastomer layer.
  3. 　前記オレフィン系樹脂層が前記エラストマー層の少なくとも一方の側に直接に積層されている、請求項１に記載の伸縮性積層体。 The stretchable laminate according to claim 1, wherein the olefin-based resin layer is directly laminated on at least one side of the elastomer layer.
  4. 　厚みが１０μｍ～５００μｍである、請求項１に記載の伸縮性積層体。 2. The stretchable laminate according to claim 1, wherein the thickness is 10 μm to 500 μm.
  5. 　前記オレフィン系樹脂層が非エラストマー性オレフィン系樹脂を含む、請求項１に記載の伸縮性積層体。 The stretchable laminate according to claim 1, wherein the olefin resin layer contains a non-elastomeric olefin resin.
  6. 　前記オレフィン系樹脂層中の前記非エラストマー性オレフィン系樹脂の含有割合が５０重量％～１００重量％である、請求項５に記載の伸縮性積層体。 The stretchable laminate according to claim 5, wherein the content ratio of the non-elastomeric olefin resin in the olefin resin layer is 50 wt% to 100 wt%.
  7. 　前記オレフィン系樹脂層中の前記非エラストマー性オレフィン系樹脂の含有割合が９５重量％～１００重量％である、請求項５に記載の伸縮性積層体。 The stretchable laminate according to claim 5, wherein the content of the non-elastomeric olefin resin in the olefin resin layer is 95 wt% to 100 wt%.
  8. 　前記非エラストマー性オレフィン系樹脂が、α－オレフィンのホモポリマーを含む、請求項５に記載の伸縮性積層体。 6. The stretchable laminate according to claim 5, wherein the non-elastomeric olefin resin contains an α-olefin homopolymer.
  9. 　前記α－オレフィンのホモポリマーが、ポリエチレン、ホモポリプロピレンから選ばれる少なくとも１種である、請求項８に記載の伸縮性積層体。 The stretchable laminate according to claim 8, wherein the α-olefin homopolymer is at least one selected from polyethylene and homopolypropylene.
  10. 　前記ポリエチレンが高密度ポリエチレンである、請求項９に記載の伸縮性積層体。 The stretchable laminate according to claim 9, wherein the polyethylene is high-density polyethylene.
  11. 　前記オレフィン系樹脂層の厚みが２μｍ～５０μｍである、請求項１に記載の伸縮性積層体。 2. The stretchable laminate according to claim 1, wherein the olefin resin layer has a thickness of 2 μm to 50 μm.
  12. 　前記オレフィン系樹脂層の厚みが２μｍ～８μｍである、請求項１に記載の伸縮性積層体。 2. The stretchable laminate according to claim 1, wherein the olefin resin layer has a thickness of 2 μm to 8 μm.
  13. 　前記エラストマー層がオレフィン系エラストマーを含む、請求項１に記載の伸縮性積層体。 The stretchable laminate according to claim 1, wherein the elastomer layer contains an olefin-based elastomer.
  14. 　前記エラストマー層中の前記オレフィン系エラストマーの含有割合が５０重量％～１００重量％である、請求項１３に記載の伸縮性積層体。 The stretchable laminate according to claim 13, wherein the content of the olefinic elastomer in the elastomer layer is 50 wt% to 100 wt%.
  15. 　前記エラストマー層中の前記オレフィン系エラストマーの含有割合が９５重量％～１００重量％である、請求項１３に記載の伸縮性積層体。 The stretchable laminate according to claim 13, wherein the content of the olefinic elastomer in the elastomer layer is 95 wt% to 100 wt%.
  16. 　前記オレフィン系エラストマーがα－オレフィン系エラストマーである、請求項１３に記載の伸縮性積層体。 The stretchable laminate according to claim 13, wherein the olefin elastomer is an α-olefin elastomer.
  17. 　前記α－オレフィン系エラストマーが、エチレン系エラストマー、プロピレン系エラストマーから選ばれる少なくとも１種である、請求項１６に記載の伸縮性積層体。 The stretchable laminate according to claim 16, wherein the α-olefin elastomer is at least one selected from ethylene elastomer and propylene elastomer.
  18. 　前記α－オレフィン系エラストマーが、メタロセン触媒を用いて製造されたものである、請求項１６に記載の伸縮性積層体。 The stretchable laminate according to claim 16, wherein the α-olefin-based elastomer is produced using a metallocene catalyst.
  19. 　前記エラストマー層の厚みが８μｍ～４５０μｍである、請求項１に記載の伸縮性積層体。 2. The stretchable laminate according to claim 1, wherein the elastomer layer has a thickness of 8 μm to 450 μm.
  20. 　前記エラストマー層の厚みが８μｍ～６７μｍである、請求項１に記載の伸縮性積層体。 2. The stretchable laminate according to claim 1, wherein the elastomer layer has a thickness of 8 μm to 67 μm.
  21. 　前記伸縮性積層体が事前伸長により形成されたものである、請求項１に記載の伸縮性積層体。 The stretchable laminate according to claim 1, wherein the stretchable laminate is formed by pre-extension.
  22. 　衛生用品に用いられる、請求項１に記載の伸縮性積層体。 The stretchable laminate according to claim 1, which is used for sanitary products.
  23. 　請求項１に記載の伸縮性積層体を含む物品。
     
     

          An article comprising the stretchable laminate according to claim 1.



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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03128234A (en) * 1988-03-22 1991-05-31 Exxon Chem Patents Inc Low glossiness film and manufacture thereof
JPH0694188B2 (en) * 1989-11-17 1994-11-24 ミネソタ マイニング アンド マニュファクチャリング カンパニー Elastomer laminate having a fine texture skin layer
JP2003311884A (en) * 2002-04-22 2003-11-06 Chisso Corp Stretched multilayered film
JP2008001104A (en) * 2006-06-22 2008-01-10 Tredegar Film Products Corp Elastic film having low tensile property in machine direction
JP2009519844A (en) * 2005-12-15 2009-05-21 キンバリー クラーク ワールドワイド インコーポレイテッド Transverse elastic film with machine direction stiffness

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03128234A (en) * 1988-03-22 1991-05-31 Exxon Chem Patents Inc Low glossiness film and manufacture thereof
JPH0694188B2 (en) * 1989-11-17 1994-11-24 ミネソタ マイニング アンド マニュファクチャリング カンパニー Elastomer laminate having a fine texture skin layer
JP2003311884A (en) * 2002-04-22 2003-11-06 Chisso Corp Stretched multilayered film
JP2009519844A (en) * 2005-12-15 2009-05-21 キンバリー クラーク ワールドワイド インコーポレイテッド Transverse elastic film with machine direction stiffness
JP2008001104A (en) * 2006-06-22 2008-01-10 Tredegar Film Products Corp Elastic film having low tensile property in machine direction

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