WO2016167241A1 - Film poreux élastique et article - Google Patents

Film poreux élastique et article Download PDF

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Publication number
WO2016167241A1
WO2016167241A1 PCT/JP2016/061787 JP2016061787W WO2016167241A1 WO 2016167241 A1 WO2016167241 A1 WO 2016167241A1 JP 2016061787 W JP2016061787 W JP 2016061787W WO 2016167241 A1 WO2016167241 A1 WO 2016167241A1
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WIPO (PCT)
Prior art keywords
porous film
stretchable porous
air permeability
film according
present
Prior art date
Application number
PCT/JP2016/061787
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English (en)
Japanese (ja)
Inventor
安洋 武田
義武 重松
公平 武田
翔 内田
宗重 中川
生島　伸祐
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.)
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Publication date
Priority claimed from JP2015232629A external-priority patent/JP6726953B2/ja
Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to CN202310898756.1A priority Critical patent/CN116903958A/zh
Priority to EP16780032.5A priority patent/EP3296349B1/fr
Priority to CN201680021971.1A priority patent/CN107428980A/zh
Priority to US15/564,090 priority patent/US10772984B2/en
Publication of WO2016167241A1 publication Critical patent/WO2016167241A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066—Use of inorganic compounding ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/08—Copolymers of ethene

Definitions

  • the present invention relates to a stretchable porous film and an article.
  • Various elastic films are used for elastic articles such as hygiene products such as adhesive bandages.
  • Such a stretchable film is required not only to have excellent stretchability but also to have excellent breathability depending on the application.
  • a conventional representative bandage (see, for example, Patent Document 1) uses polyvinyl chloride as a polymer component of the stretchable film that it has. There is a problem that a maceration phenomenon occurs in which the skin of the affixed portion is steamed and whitened while it is affixed to the abdomen.
  • the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a stretchable porous film having excellent stretchability and excellent breathability. Moreover, it is providing the articles
  • the stretchable porous film of the present invention is A stretchable porous film having voids on the surface,
  • the air permeability measured by the Oken air permeability meter is less than 99999 sec / 100 cc
  • the air permeability measured by the Oken air permeability meter in a state of 100% extension has an extension direction that is less than 60000 sec / 100 cc
  • the residual strain when the inter-chuck distance is removed is 10 mm or less.
  • the air permeability measured by the Oken air permeability meter is less than 60000 sec / 100 cc.
  • the air permeability measured by the Oken air permeability meter is less than 40000 sec / 100 cc.
  • the air permeability measured by the Oken air permeability meter in the 100% stretched state is less than 30000 sec / 100 cc.
  • the air permeability measured by the Oken air permeability meter in the 100% stretched state is less than 5000 sec / 100 cc.
  • the residual strain is 8 mm to 1 mm.
  • the residual strain is 6 mm to 2 mm.
  • the stretchable porous film of the present invention has a thickness of 30 ⁇ m to 300 ⁇ m.
  • the stretchable porous film of the present invention has a thickness of 50 ⁇ m to 150 ⁇ m.
  • the stretchable porous film of the present invention includes a polymer component and a filler.
  • the polymer component includes a propylene-based elastomer.
  • the content of the propylene-based elastomer in the polymer component is 30% by weight to 100% by weight.
  • the propylene-based elastomer has an MFR of 0.1 g / 10 min to 18 g / 10 min.
  • the propylene-based elastomer has an MFR of 2 g / 10 min to 5 g / 10 min.
  • the propylene elastomer is a metallocene elastomer.
  • the polymer component includes linear low density polyethylene.
  • the content of the linear low-density polyethylene in the polymer component is 5% by weight to 60% by weight.
  • the filler is at least one selected from inorganic particles and organic particles.
  • the article of the present invention includes the stretchable porous film of the present invention.
  • the article of the present invention has an adhesive layer.
  • a stretchable porous film having excellent stretchability and excellent breathability can be provided.
  • goods containing such a stretchable porous film can be provided.
  • FIG. 1 It is a schematic plan view of an example of the elastic porous film by one embodiment of the present invention. It is a schematic plan view of another example of the stretchable porous film according to one embodiment of the present invention. The figure showing the relationship between the stress and distortion of a hysteresis test at the time of measuring a residual distortion.
  • the stretchable porous film of the present invention is a stretchable porous film having voids on the surface.
  • the stretchable porous film of the present invention has excellent air permeability by having voids on the surface.
  • the stretchable porous film of the present invention has an air permeability of less than 99999 sec / 100 cc, preferably less than 80000 sec / 100 cc, more preferably less than 70000 sec / 100 cc, as measured by the Oken air permeability meter. More preferably, it is less than 60000 sec / 100 cc, particularly preferably less than 50000 sec / 100 cc, and most preferably less than 40000 sec / 100 cc. If the air permeability measured by the Oken air permeability meter of the stretchable porous film of the present invention is within the above range, the stretchable porous film of the present invention can have excellent air permeability. .
  • the stretchable porous film of the present invention has an extension direction in which the air permeability measured by the Oken air permeability meter in a state of 100% extension is less than 60000 sec / 100 cc.
  • This air permeability is preferably less than 50000 sec / 100 cc, more preferably less than 40000 sec / 100 cc, still more preferably less than 30000 sec / 100 cc, particularly preferably less than 10000 sec / 100 cc, and most preferably 5000 sec / Less than 100cc.
  • the stretchable porous film of the present invention has an elongation direction in which the air permeability measured by the Oken type air permeability meter in a state of 100% elongation is in the above range, the stretchable porous film of the present invention.
  • the quality film can have excellent air permeability in the stretched state.
  • the stretchable porous film of the present invention may have at least one extension direction in which the air permeability falls within the above range.
  • an extension direction typically, when the stretchable porous film of the present invention is an unstretched film, all directions of the film are preferably exemplified. In the case of a uniaxially stretched film, a direction orthogonal to the direction of stretching (CD direction when stretched in the longitudinal (MD) direction) is preferably exemplified.
  • the stretchable porous film of the present invention is a biaxially stretched film, the air permeability is within the above range depending on various conditions such as simultaneous stretching or sequential stretching or a difference in biaxial stretching ratio.
  • the inner extension direction is determined.
  • the stretchable porous film of the present invention has a tensile strength of 20 mm and a distance between chucks of 30 mm to a distance between chucks of 60 mm at a tensile speed of 50 mm / min and is held for 1 minute in a hysteresis test.
  • the tensile strain is such that the residual strain is 10 mm or less.
  • This residual strain is preferably 9 mm to 1 mm, more preferably 8 mm to 1 mm, still more preferably 7 mm to 1 mm, particularly preferably 6 mm to 2 mm, and most preferably 5 mm to 3 mm. If the stretchable porous film of the present invention has a tensile direction in which the residual strain falls within the above range, the stretchable porous film of the present invention can have excellent stretchability.
  • the term “having a tensile direction” means that the stretchable porous film of the present invention only needs to have at least one tensile direction in which the residual strain falls within the above range.
  • a pulling direction typically, when the stretchable porous film of the present invention is an unstretched film, all directions of the film are preferably mentioned, and the stretchable porous film of the present invention is In the case of a uniaxially stretched film, a direction orthogonal to the direction of stretching (CD direction when stretched in the longitudinal (MD) direction) is preferably exemplified.
  • the stretchable porous film of the present invention is a biaxially stretched film, the residual strain is within the above range depending on various conditions such as simultaneous stretching or sequential stretching or a difference in biaxial stretching ratio. The pulling direction is determined.
  • the thickness of the stretchable porous film of the present invention is preferably 30 ⁇ m to 300 ⁇ m, more preferably 40 ⁇ m to 200 ⁇ m, still more preferably 50 ⁇ m to 150 ⁇ m, particularly preferably 60 ⁇ m to 140 ⁇ m, and most preferably. 70 ⁇ m to 120 ⁇ m. If the thickness of the stretchable porous film of the present invention is within the above range, the stretchable porous film of the present invention can have better stretchability and better breathability.
  • the stretchable porous film of the present invention preferably contains a polymer component and a filler.
  • FIG. 1 is a schematic plan view of an example of a stretchable porous film according to one embodiment of the present invention.
  • the stretchable porous film 100 includes a polymer component 10 and a filler 20.
  • FIG. 2 is a schematic plan view of another example of a stretchable porous film according to one embodiment of the present invention.
  • the stretchable porous film 100 includes a polymer component 10 and a filler 20, and further includes a void 30.
  • the stretchable porous film of the present invention is an embodiment as shown in FIG. 1, it can be an embodiment as shown in FIG. 2 by stretching. That is, when the stretchable porous film of the present invention is an embodiment as shown in FIG. 1, the stretchable porous film of the present invention can generate an appropriate void on the surface by stretching. Due to this appropriate gap, the stretchable porous film of the present invention can exhibit sufficient air permeability. Furthermore, it can also have waterproofness like a conventional typical bandage.
  • the presence of the filler causes the presence of an interface between the polymer component and the filler. Sex can be expressed.
  • the stretchable porous film of the present invention can adopt an embodiment as shown in FIG. 1 or an embodiment as shown in FIG. 2 according to the required performance of the part to be used.
  • any appropriate polymer component can be adopted as the polymer component as long as the effects of the present invention are not impaired.
  • the polymer component preferably contains a propylene-based elastomer.
  • the stretchable porous film of the present invention can exhibit more excellent stretchability. Moreover, the stretchable porous film of this invention can express the more outstanding air permeability by combining with a filler because a polymer component contains a propylene-type elastomer.
  • propylene-based elastomer Only one type of propylene-based elastomer may be used, or two or more types may be used.
  • the stretchable porous film of the present invention contains a propylene-based elastomer
  • the thermal stability is improved, and for example, the thermal deterioration during the production of the stretchable porous film of the present invention can be suppressed.
  • the stretchable porous film of the present invention contains a propylene-based elastomer
  • storage stability is improved, and fluctuations in physical property values during storage of the stretchable porous film of the present invention can be suppressed.
  • the production process of the stretchable porous film of the present invention can be simplified and the processing cost can be suppressed by including the propylene-based elastomer in the stretchable porous film of the present invention. This is because when a propylene-based elastomer is employed, it is possible to perform extrusion molding when producing the stretchable porous film of the present invention, and it becomes unnecessary to produce a masterbatch.
  • the content of the propylene-based elastomer in the polymer component is preferably 30% by weight to 100% by weight, more preferably 40% by weight to 95% by weight, and still more preferably, from the viewpoint that the effects of the present invention are more manifested. Is 50% to 90% by weight, particularly preferably 55% to 85% by weight, and most preferably 60% to 80% by weight.
  • the stretchable porous film of the present invention can exhibit more excellent stretchability.
  • the stretchable porous film of this invention can express the more superior air permeability by combining with a filler.
  • propylene elastomer examples include propylene copolymer, propylene olefin block copolymer, propylene olefin random copolymer, propylene ethylene olefin block copolymer, and amorphous polypropylene.
  • the propylene-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 density of the propylene-based elastomer is within the above range, the stretchable porous film of the present invention can exhibit more excellent stretchability.
  • the stretchable porous film of this invention can express the more outstanding air permeability by combining with a filler.
  • the propylene elastomer has an MFR at 230 ° C. of 2.16 kgf of preferably 0.1 g / 10 min to 18 g / 10 min, more preferably 0.5 g / 10 min to 15 g / 10 min. More preferably, it is 1.0 g / 10 min to 10 g / 10 min, particularly preferably 1.5 g / 10 min to 7 g / 10 min, and most preferably 2 g / 10 min to 5 g / 10 min.
  • the stretchable porous film of the present invention can exhibit more excellent stretchability.
  • the stretchable porous film of the present invention can exhibit better air permeability when combined with a filler.
  • Propylene elastomer can be obtained as a commercial product.
  • Commercially available products include, for example, some of “Tafmer” (registered trademark) series manufactured by Mitsui Chemicals, Inc., and “Vistamaxx” (registered trademark) series manufactured by ExxonMobil. Some (for example, Vistamax 7010) can be mentioned.
  • the propylene-based elastomer is preferably a metallocene-based elastomer (a propylene-based elastomer that is a metallocene-based elastomer may be referred to as a metallocene polypropylene-based elastomer).
  • the metallocene elastomer is an elastomer produced using a metallocene catalyst.
  • the polymer component preferably contains linear low density polyethylene.
  • the stretchable porous film of the present invention can exhibit more excellent stretchability. Moreover, the stretchable porous film of this invention can express the more outstanding air permeability by combining with a filler because a polymer component contains a linear low density polyethylene with a propylene-type elastomer.
  • the linear low density polyethylene may be only one kind or two or more kinds.
  • the thermal stability is improved, for example, the thermal deterioration during the production of the stretchable porous film of the present invention is suppressed. Can do.
  • the stretchable porous film of the present invention contains linear low-density polyethylene together with the propylene-based elastomer, the storage stability is improved, and the physical property values during storage of the stretchable porous film of the present invention Fluctuations can be suppressed.
  • the stretchable porous film of the present invention contains linear low density polyethylene together with a propylene-based elastomer, whereby the production process of the stretchable porous film of the present invention can be simplified and processing costs can be suppressed. This is because when a linear low density polyethylene is used together with a propylene-based elastomer, it becomes possible to extrude when producing the stretchable porous film of the present invention, and there is no need to prepare a masterbatch. .
  • the content of the linear low density polyethylene in the polymer component is preferably 0% by weight to 70% by weight, more preferably 5% by weight to 60% by weight, from the viewpoint that the effect of the present invention is more manifested. More preferably, it is 10 to 50% by weight, particularly preferably 15 to 45% by weight, and most preferably 20 to 40% by weight. If the content rate of the linear low density polyethylene in a polymer component shall be in the said range, the stretchable porous film of this invention can express the more excellent stretchability. Moreover, if the content rate of the linear low density polyethylene in a polymer component shall be in the said range, the stretchable porous film of this invention can express the more outstanding air permeability by combining with a filler.
  • the linear low density polyethylene preferably has a density of 0.910 g / cm 3 to 0.940 g / cm 3 . If the density of the linear low-density polyethylene is within the above range, the stretchable porous film of the present invention can exhibit more excellent stretchability. Moreover, if the density of linear low density polyethylene is made into the said range, the stretchable porous film of this invention can express the more outstanding air permeability by combining with a filler.
  • the MFR at 2.16 kgf at 230 ° C. is preferably 1 g / 10 min to 50 g / 10 min. If the MFR of the linear low density polyethylene is within the above range, the stretchable porous film of the present invention can exhibit more excellent stretchability. Moreover, if the said MFR of linear low density polyethylene is made into the said range, the stretchable porous film of this invention can express the more excellent air permeability by combining with a filler.
  • Linear low density polyethylene can also be obtained as a commercial product.
  • Commercially available products include some of the “Ultzex” (registered trademark) series manufactured by Prime Polymer Co., Ltd.
  • the linear low density polyethylene is preferably a metallocene linear low density polyethylene.
  • the metallocene-based linear low density polyethylene is a linear low density polyethylene produced using a metallocene catalyst.
  • the stretchable porous film of the present invention preferably contains a filler.
  • the filler is preferably at least one selected from inorganic particles and organic particles. Only one type of filler may be used, or two or more types may be used. When the stretchable porous film of the present invention contains a filler, the stretchable porous film of the present invention can exhibit better air permeability.
  • examples of the inorganic particles include talc, titanium oxide, calcium oxide, magnesium oxide, zinc oxide, titanium oxide, calcium carbonate, silica, clay, mica, barium sulfate, whisker, and magnesium hydroxide.
  • organic particles examples include acrylic beads, styrene beads, and silicone resin particles.
  • the average particle diameter of the filler any appropriate average particle diameter can be adopted as long as the effects of the present invention are not impaired.
  • the average particle size of such a filler is preferably 0.5 ⁇ m to 50 ⁇ m.
  • Arbitrary appropriate content can be employ
  • the content of such a filler is preferably 50 to 400 parts by weight with respect to 100 parts by weight of the polymer component in the stretchable porous film.
  • the stretchable porous film of the present invention can exhibit better air permeability.
  • the filler may be coated with a release agent to prevent aggregation.
  • release agents include fatty acid amide release agents, silicone release agents, fluorine release agents, and long chain alkyl release agents.
  • a fatty acid amide release agent is preferable, and a saturated fatty acid bisamide is more preferable.
  • Arbitrary appropriate usage-amount can be employ
  • the stretchable porous film of the present invention may contain any appropriate other component as long as the effects of the present invention are not impaired. These may be only one kind or two or more kinds.
  • Such other components include, for example, ultraviolet absorbers, heat stabilizers, fillers, lubricants, colorants (dyes, etc.), antioxidants, anti-glare agents, antiblocking agents, foaming agents, and the like. Examples thereof include polymers, tackifiers, plasticizers, deterioration inhibitors, antistatic agents, and light stabilizers. These may be only one kind or two or more kinds.
  • 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.
  • 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.
  • a method for producing the stretchable porous film of the present invention a method of producing by molding using a T-die molding machine is typical.
  • a roll body of a stretchable porous film can be produced by extruding the material of the stretchable porous film of the present invention from a T die using a T-die molding machine and then winding it into a roll. it can.
  • an inflation method or the like can be employed.
  • the stretchable porous film of the present invention may be obtained by stretching an unstretched film. Such stretching of an unstretched film may be referred to as pre-stretching.
  • the stretchable porous film of the present invention can exhibit more excellent stretchability when the unstretched film is stretched.
  • the stretchable porous film of the present invention is a film obtained by stretching an unstretched film, so that it can exhibit more excellent air permeability when combined with a filler.
  • Pre-stretching is pre-stretching in the sense that the stretchable porous film of the present invention is stretched in advance with respect to being stretched again in the final use (post-stretching).
  • the pre-stretching is preferably performed after the elastic porous film of the present invention is produced and sufficiently solidified.
  • the pre-stretching may be performed for the entire length or width in at least one direction, or may be performed partially.
  • the pre-stretching can be performed in any direction.
  • Pre-stretching is preferably performed on its original length or width in at least one direction.
  • the extension degree of the pre-extension is preferably 1.5 times or more and less than 2.5 times (typically 2.0 times), more preferably 2.5 times or more and less than 3.5 times (typically 3.times. 0 times), more preferably 3.5 times or more and less than 4.5 times (typically 4.0 times), particularly preferably 4.5 times or more and less than 5.5 times (typically 5.0 times) ).
  • the 2.0-fold pre-extension means that the original length is L, and the extension is 2 L (sometimes referred to as stretching).
  • the stretchable porous film of this invention can exhibit more excellent stretchability.
  • the stretchable porous film of this invention can express the more outstanding air permeability by combining with a filler by extending
  • Pre-extension is preferably performed at a temperature below the melting point of the polymer component.
  • the stretchable porous film of the present invention can exhibit more excellent stretchability.
  • the stretchable porous film of the present invention can exhibit better air permeability when combined with a filler.
  • the stretchable porous film of the present invention preferably exhibits excellent stretchability because the polymer component is plastically deformed or stretched beyond the brittle fracture point of the polymer by pre-stretching in this way. obtain.
  • the stretchable porous film 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 porous film of the present invention.
  • a typical example of such an article is an adhesive bandage.
  • Air permeability> The air permeability was measured using an Oken type air permeability meter (sec / 100cc) (manufactured by Asahi Seiko Co., Ltd., trade name: EG01-7-7MR). Those exceeding 99999 sec / 100 cc were judged as “no breathability”.
  • ⁇ Residual strain> A hysteresis test as shown in FIG. 3 is performed on a test piece having a width of 20 mm, from a distance between chucks of 30 mm to a distance between chucks of 60 mm at a pulling speed of 50 mm / min, held for 1 minute, and then the tension between the chucks is eliminated. The residual strain when the tension between the chucks was removed was measured. Regarding the measurement of residual strain, when the produced film is a uniaxially stretched film, the tensile direction is the direction orthogonal to the direction of the stretching (CD direction when stretched in the longitudinal (MD) direction). did.
  • ⁇ Evaluation of maceration phenomenon Prepare 100 parts of Quintac 3433N manufactured by Nippon Zeon Co., Ltd., 50 parts of Clearon M105 manufactured by Yasuhara Chemical Co., Ltd., and 150 parts of YS Resin TO-L manufactured by Yasuhara Chemical Co., Ltd. to prepare a hot melt adhesive (A). did.
  • the hot melt pressure-sensitive adhesive (A) is spray-coated on one side of the film to be evaluated, cut into a CD direction of 80 mm ⁇ longitudinal direction of 20 mm, wrapped around a fingertip, and observed for the state of the skin at the wound part after 24 hours. Evaluated by criteria. If the skin is not normal: ⁇ If skin is white: ⁇
  • the stretchable porous film 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 porous film of the present invention.
  • a typical example of such an article is an adhesive bandage.
  • Polymer component 10 Filler 20 Air gap 30 Elastic porous film 100

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

L'invention concerne un film poreux élastique ayant d'excellentes propriétés élastiques et une excellente respirabilité. L'invention concerne également un article comprenant un tel film poreux élastique. Ledit film poreux élastique comporte des vides à sa surface et sa perméabilité à l'air, mesurée par un testeur de perméabilité d'air de type Oken, est inférieure à 99999 sec/100 cc. Ledit film poreux élastique présente une direction d'allongement dans laquelle la perméabilité à l'air mesurée dans un état 100 % allongé par un testeur de perméabilité d'air de type Oken est inférieure à 60000 sec/100 cc, et lors d'un test d'hystérésis, le film poreux élastique a une direction de traction dans laquelle la contrainte résiduelle est de 10 mm ou moins lorsque le film poreux élastique est étiré à partir d'une largeur de 20 mm et d'une distance inter-mandrin de 30 mm jusqu'à une distance inter-mandrin de 60 mm, à une vitesse de traction de 50 mm/minute, et maintenu pendant 1 minute, la traction exercée sur la distance inter-mandrin étant ensuite relâchée.
PCT/JP2016/061787 2015-04-15 2016-04-12 Film poreux élastique et article WO2016167241A1 (fr)

Priority Applications (4)

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CN202310898756.1A CN116903958A (zh) 2015-04-15 2016-04-12 伸缩性多孔膜和制品
EP16780032.5A EP3296349B1 (fr) 2015-04-15 2016-04-12 Film poreux élastique et article
CN201680021971.1A CN107428980A (zh) 2015-04-15 2016-04-12 伸缩性多孔膜和制品
US15/564,090 US10772984B2 (en) 2015-04-15 2016-04-12 Elastic porous film and article

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JP2015082962 2015-04-15
JP2015-082962 2015-04-15
JP2015-232629 2015-11-30
JP2015232629A JP6726953B2 (ja) 2015-04-15 2015-11-30 伸縮性多孔質フィルムおよび物品

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Publication number Priority date Publication date Assignee Title
US20190309164A1 (en) * 2016-08-31 2019-10-10 Toray Industries, Inc. Resin composition and molded article thereof
US11305034B2 (en) 2015-04-15 2022-04-19 Nitto Denko Corporation Stretchable film and product including same

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JPH05310980A (ja) * 1992-05-11 1993-11-22 Nitto Denko Corp 伸縮性多孔質フィルム・シートの製造方法
JPH11240984A (ja) * 1992-12-28 1999-09-07 Mitsubishi Chemical Corp 延伸フィルム
JP2002316359A (ja) * 2001-04-23 2002-10-29 Mitsui Chemicals Inc 多孔フィルム・不織布複合シート及びその製造方法
JP2008179757A (ja) * 2006-12-28 2008-08-07 Nippon Polyethylene Kk 通気性フィルム
JP2010065088A (ja) * 2008-09-09 2010-03-25 Toray Ind Inc 多孔性フィルムおよび蓄電デバイス
JP2012177106A (ja) * 2011-02-03 2012-09-13 Toray Ind Inc 多孔性ポリプロピレンフィルム

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Publication number Priority date Publication date Assignee Title
JPH05310980A (ja) * 1992-05-11 1993-11-22 Nitto Denko Corp 伸縮性多孔質フィルム・シートの製造方法
JPH11240984A (ja) * 1992-12-28 1999-09-07 Mitsubishi Chemical Corp 延伸フィルム
JP2002316359A (ja) * 2001-04-23 2002-10-29 Mitsui Chemicals Inc 多孔フィルム・不織布複合シート及びその製造方法
JP2008179757A (ja) * 2006-12-28 2008-08-07 Nippon Polyethylene Kk 通気性フィルム
JP2010065088A (ja) * 2008-09-09 2010-03-25 Toray Ind Inc 多孔性フィルムおよび蓄電デバイス
JP2012177106A (ja) * 2011-02-03 2012-09-13 Toray Ind Inc 多孔性ポリプロピレンフィルム

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11305034B2 (en) 2015-04-15 2022-04-19 Nitto Denko Corporation Stretchable film and product including same
US20190309164A1 (en) * 2016-08-31 2019-10-10 Toray Industries, Inc. Resin composition and molded article thereof
US10626273B2 (en) * 2016-08-31 2020-04-21 Toray Industries, Inc. Resin composition and molded article thereof

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