WO2016093303A1 - Stratifié élastique, article le contenant, article stratifié élastique étiré et article le contenant - Google Patents

Stratifié élastique, article le contenant, article stratifié élastique étiré et article le contenant Download PDF

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Publication number
WO2016093303A1
WO2016093303A1 PCT/JP2015/084624 JP2015084624W WO2016093303A1 WO 2016093303 A1 WO2016093303 A1 WO 2016093303A1 JP 2015084624 W JP2015084624 W JP 2015084624W WO 2016093303 A1 WO2016093303 A1 WO 2016093303A1
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WIPO (PCT)
Prior art keywords
stretchable laminate
olefin
elastomer
layer
laminate according
Prior art date
Application number
PCT/JP2015/084624
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English (en)
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 JP2015005169A external-priority patent/JP2016112878A/ja
Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to PL15866721T priority Critical patent/PL3231604T3/pl
Priority to US15/528,248 priority patent/US20170320304A1/en
Priority to EP15866721.2A priority patent/EP3231604B1/fr
Priority to RU2017124228A priority patent/RU2017124228A/ru
Priority to KR1020177014119A priority patent/KR20170094155A/ko
Priority to CN201580067719.XA priority patent/CN107000391B/zh
Priority to BR112017010898A priority patent/BR112017010898A2/pt
Publication of WO2016093303A1 publication Critical patent/WO2016093303A1/fr

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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.
  • the present invention also relates to a stretchable laminate extension and an article containing the same.
  • Patent Document 1 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).
  • Such a conventional stretchable laminate exhibits an elastic property immediately after it is manufactured, so that the handleability is poor and, for example, it is difficult to perform an operation of incorporating it into an article such as a sanitary article such as a diaper or a mask. There is a problem.
  • 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 handling properties 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 elongation rate starts from 0%.
  • the difference between the yield stress at the upper yield point and the yield stress at the lower yield point is 0.05 N / 30 mm width or more.
  • 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 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 stretch laminate of the present invention is obtained by pre-stretching the stretch laminate of the present invention.
  • the stretchable laminate extension of the present invention is used for hygiene products.
  • the article of the present invention includes the stretch laminate of the present invention.
  • the present invention it is possible to provide a stretchable laminate having excellent handling properties and excellent blocking resistance. Moreover, the articles
  • FIG. 3 is an SS data diagram of a stretchable laminate according to a preferred embodiment of the present invention. It is a SS data figure at the time of the pre-extension of the elastic laminated body by preferable embodiment of this invention. It is a hysteresis loop figure after the pre-extension of the elastic laminated body by preferable embodiment of this invention.
  • 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 handleability 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 stretchable laminate of the present invention can be excellent in handling properties and 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 stretchable laminate of the present invention has an elongation rate of 0 in the SS data diagram of the operation of stretching the elongation rate to 400% at a tensile rate of 1000 mm / min and then returning the elongation to an elongation rate of 0% at a tensile rate of 1000 mm / min. It has an upper yield point while extending from% to 100%, and has a lower yield point while extending from the upper yield point to an elongation rate of 400%. By having such properties, the stretchable laminate of the present invention can be excellent in handleability.
  • FIG. 2 shows the SS of the stretchable laminate according to the preferred embodiment of the present invention, which is stretched to a stretch rate of 400% at a stretch rate of 1000 mm / min and then returned to a stretch rate of 0% at a stretch rate of 1000 mm / min.
  • a data diagram is shown.
  • the stretchable laminate according to the preferred embodiment of the present invention has an upper yield point A while the elongation percentage is elongated from 0% to 100%.
  • the stretchable laminate according to the preferred embodiment of the present invention has a lower yield point B while extending from the upper yield point A to an elongation ratio of 400%.
  • the difference between the yield stress at the upper yield point and the yield stress at the lower yield point (in FIG. 2, the yield stress P at the upper yield point A and the yield stress at the lower yield point B).
  • the difference in stress Q) is 0.05 N / 30 mm width or more, preferably 0.05 N / 30 mm width to 10 N / 30 mm width, more preferably 0.05 N / 30 mm width to 5 N / 30 mm width,
  • the width is preferably 0.05 N / 30 mm width to 2 N / 30 mm width, and particularly preferably 0.1 N / 30 mm width to 2 N / 30 mm width.
  • 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.
  • the pre-extension conditions are not limited to the above-described conditions, that is, the operation of extending the elongation rate to 400% at a tensile speed of 1000 mm / min and then returning the elongation to the elongation rate of 0% at a tensile speed of 1000 mm / min. As described above, any appropriate conditions can be adopted as long as the effects of the present invention are not impaired.
  • the stretch 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, After pre-stretching, excellent elastic performance can be developed.
  • the presence of the olefin-based resin layer creates an upper yield point, and the upper yield point is a manifestation of resistance stress until the elastic performance is exhibited by elongation.
  • a laminate having an upper yield point is less likely to exhibit elastic properties, and therefore has better handleability.
  • the presence of the lower yield point is a manifestation of the disappearance of the above-mentioned resistance stress, and the elongation after the lower yield point is extended beyond the brittle fracture point of the olefin resin layer or plastic deformation of the olefin resin layer. In other words, it is a manifestation that excellent elastic performance can be expressed.
  • ⁇ 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 stretchable laminate of the present invention can be more excellent in handleability.
  • 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 in handleability.
  • 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 in handleability.
  • 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 in handleability.
  • 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-based elastomer produced using a metallocene catalyst, the stretchable laminate of the present invention can be further improved in handleability.
  • 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.
  • a stretch laminate that is more excellent in handleability can be provided.
  • 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 extension product of the present invention can exhibit excellent elastic performance.
  • the stretch laminate of the present invention is obtained by pre-stretching the stretch laminate of the present invention.
  • this pre-extension is again extended when the stretch laminate of the present invention is pre-stretched to obtain a stretch laminate laminate (for example, when manufacturing a diaper and when using a diaper).
  • Pre-extension in the sense that
  • the pre-extension conditions are any appropriate conditions as long as the stretchable laminate of the present invention can exhibit stretchability after pre-stretching. Can be adopted.
  • 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 is preferably preliminarily stretched in this way, so that the olefin resin layer is plastically deformed or stretched beyond the brittle fracture point of the olefin resin layer. It becomes a stretchable laminate and can exhibit excellent elastic 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 the treatment, the stretchable laminate of the present invention is obtained, and excellent elastic performance can be exhibited.
  • 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. It becomes a body extension product.
  • 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.
  • 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.
  • the stretchable laminate stretched product of the present invention can be used for any appropriate article that can effectively utilize the effects of the present invention. That is, the article of the present invention includes the stretchable laminate extension of the present invention.
  • a typical example of such an article is a sanitary product.
  • the stretchable laminate extension of the present invention can be used as a stretchable member (waistband or gather) of a diaper (particularly, an ear (ear) portion or an opening portion around a waist or a leg). Used diapers), supporters, masks, etc.
  • 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. The upper yield point can be confirmed from the measurement of SS data. During the elongation from 0% to 100%, when there is no upper yield point, the elongation stress at 100% strain is the highest, and when it has the upper yield point, the elongation stress at strain less than 100% is the highest.
  • ⁇ 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, and it was as shown in FIG. Moreover, 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 and the stretched 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 stretch laminate of the present invention and / or the stretch laminate of the present invention.
  • a typical example of such an article is a sanitary product.
  • the stretchable laminate of the present invention and / or the stretchable member are used as such sanitary goods.
  • the stretchable laminate of the present invention and / or the stretchable member (waistband or gathers) of the diaper particularly the ear (ear) portion, the waist or the leg
  • Diapers in which the stretchable laminate of the present invention is used supporters, masks and the like.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un stratifié élastique qui possède d'excellentes propriétés de manipulation et une excellente résistance à l'adhérence. L'invention concerne également un article contenant le stratifié élastique. L'invention concerne en outre un article stratifié élastique étiré, obtenu par pré-étirement du corps stratifié élastique. L'invention concerne en plus un article contenant l'article stratifié élastique étiré. Le stratifié élastique comprend une couche de résine oléfine sur au moins un côté d'une couche élastomère. Dans un graphique contrainte-déformation représentant un procédé dans lequel le stratifié élastique est étiré à un taux d'étirement de 400 % à une vitesse d'étirement de 1000 mm/minute, puis ramené à un taux d'étirement de 0 % à une vitesse de traction de 1000 mm/minute, une limite d'élasticité supérieure est présente dans l'intervalle allant d'un taux d'étirement de 0 % à un taux d'étirement de 100 %, une limite d'élasticité inférieure est présente dans l'intervalle allant de la limite d'élasticité supérieure à un taux d'étirement de 400 %, et la différence entre l'effort de déformation permanente de la limite d'élasticité supérieure et l'effort de déformation permanente de la limite d'élasticité inférieure est de 0,05 N/30 mm de largeur ou plus.
PCT/JP2015/084624 2014-12-12 2015-12-10 Stratifié élastique, article le contenant, article stratifié élastique étiré et article le contenant WO2016093303A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PL15866721T PL3231604T3 (pl) 2014-12-12 2015-12-10 Elastyczny laminat, zawierający go wyrób, rozciągnięty elastyczny laminat i zawierający go wyrób
US15/528,248 US20170320304A1 (en) 2014-12-12 2015-12-10 Elastic laminate, article containing same, stretched elastic laminate article, and article containing same
EP15866721.2A EP3231604B1 (fr) 2014-12-12 2015-12-10 Stratifié élastique, article le contenant, article stratifié élastique étiré et article le contenant
RU2017124228A RU2017124228A (ru) 2014-12-12 2015-12-10 Эластичный ламинат, содержащее его изделие, растянутый эластичный ламинат и содержащее его изделие
KR1020177014119A KR20170094155A (ko) 2014-12-12 2015-12-10 신축성 적층체, 이를 포함하는 물품, 신축성 적층체 신장물 및 이를 포함하는 물품
CN201580067719.XA CN107000391B (zh) 2014-12-12 2015-12-10 伸缩性层叠体、包含其的制品、伸缩性层叠体伸长物及包含该伸缩性层叠体伸长物的制品
BR112017010898A BR112017010898A2 (pt) 2014-12-12 2015-12-10 laminado elástico, artigo contendo o mesmo, artigo laminado elástico alongado e artigo contendo o laminado

Applications Claiming Priority (4)

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JP2014251362 2014-12-12
JP2014-251362 2014-12-12
JP2015005169A JP2016112878A (ja) 2014-12-12 2015-01-14 伸縮性積層体、それを含む物品、伸縮性積層体伸長物、および、それを含む物品
JP2015-005169 2015-01-14

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CN113727852A (zh) * 2019-04-17 2021-11-30 日东电工株式会社 多层共挤出膜和包括该多层共挤出膜的制品

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JPH0694188B2 (ja) * 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 微細組織スキン層を有するエラストマー積層体
JP2003311884A (ja) * 2002-04-22 2003-11-06 Chisso Corp 延伸多層フィルム
JP2008001104A (ja) * 2006-06-22 2008-01-10 Tredegar Film Products Corp 機械方向に低引張り性質を示す弾性フィルム
JP2009519844A (ja) * 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 機械方向剛性を有する横方向弾性フィルム

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JPH03128234A (ja) * 1988-03-22 1991-05-31 Exxon Chem Patents Inc 低光沢フィルムおよびその製造方法
JPH0694188B2 (ja) * 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 微細組織スキン層を有するエラストマー積層体
JP2003311884A (ja) * 2002-04-22 2003-11-06 Chisso Corp 延伸多層フィルム
JP2009519844A (ja) * 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 機械方向剛性を有する横方向弾性フィルム
JP2008001104A (ja) * 2006-06-22 2008-01-10 Tredegar Film Products Corp 機械方向に低引張り性質を示す弾性フィルム

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Publication number Priority date Publication date Assignee Title
CN113727852A (zh) * 2019-04-17 2021-11-30 日东电工株式会社 多层共挤出膜和包括该多层共挤出膜的制品
US11707917B2 (en) 2019-04-17 2023-07-25 Nitto Denko Corporation Multilayer co-extruded films and article containing same

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