WO2017196268A1 - Pellicule de polyoléfine perméable à l'air - Google Patents

Pellicule de polyoléfine perméable à l'air Download PDF

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Publication number
WO2017196268A1
WO2017196268A1 PCT/TH2017/000037 TH2017000037W WO2017196268A1 WO 2017196268 A1 WO2017196268 A1 WO 2017196268A1 TH 2017000037 W TH2017000037 W TH 2017000037W WO 2017196268 A1 WO2017196268 A1 WO 2017196268A1
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WO
WIPO (PCT)
Prior art keywords
breathable
film
building materials
polyolefin film
materials according
Prior art date
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Ceased
Application number
PCT/TH2017/000037
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English (en)
Inventor
Wissanee CHAROENPINIJKARN
Wilasa Vichit-Vadakan
Charkrid PATAMATAMKUL
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SCG Chemicals PCL
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SCG Chemicals PCL
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Publication of WO2017196268A1 publication Critical patent/WO2017196268A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms
    • C08L23/0815—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms with aliphatic 1-olefins containing one carbon-to-carbon double bond
    • 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
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B13/12—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/102—Oxide or hydroxide
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/584—Scratch resistance
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/712—Weather resistant
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • 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
    • B32B2419/00—Buildings or parts thereof
    • B32B2419/04—Tiles for floors or walls
    • 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
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • 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
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/08—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
    • 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
    • C08J2423/06—Polyethene
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films

Definitions

  • the present invention relates to breathable polyolefin film for building materials.
  • Background art Wallboard or gypsum board is a building material for wall, ceiling, and partition systems in residential structure. It normally consists of a rigid core and papers surfacing on the face back and long edges.
  • wallboard or gypsum board has been developed in many ways. For example, viscoelastic layer was inserted in the board for acoustically enhancement.
  • the paper facer has poor weatherability and resistance to water which make it low durability. Uncontrolled excess moisture passing through wallboard can lead to fungal growth in buildings.
  • Breathable film is well known technology in the field of food packaging to keep food fresh, extend shelf life and maintain organoleptic properties. Breathable film is also used in hygiene and medical applications. Water vapor transmission rates (WVTR) and Oxygen transmission rate (OTR) are the two key factor which determine the permeability or barrier performance of materials. These two factors are correlated with each other.
  • WVTR Water vapor transmission rates
  • OTR Oxygen transmission rate
  • US 20130295364A1 disclosed films and more particularly to polyolefin-based films having medium to high WVTR. Such films are suited for fresh produce packaging applications, breathable films used in baby diapers or adult incontinence products and breathable bather surgical gowns.
  • US2016176168 disclosed a breathable multilayer film comprising: (a) a monolithic core layer comprising at least one core-layer highly breathable polymer; and (b) a first skin layer comprising at least one first-skin-layer highly breathable polymer, a first-skin-layer filler, and a first-skin-layer non-breathable material.
  • the breathable multilayer film is suitable for a wide variety of uses e.g., protective apparel, surgical gowns, surgical drapes, aprons, roofing material, house wrap, etc.
  • Breathable film is normally produced from polyolefm e.g. high density polyethylene, low density polyethylene, polypropylne with an amount of filler.
  • a breathable film comprises a resin composition comprising (1) 100 parts by weight of a linear low- density polyethylene resin having a density of from 0.870 to 0.915 g/cm3 and containing from 15 to 50% by weight of a component which is extractable with xylene at room temperature and which has a weight average molecular chain length of from 1,000 to 9,000 A; and (2) from 50 to 400 parts by weight of a filler.
  • the breathable film shows good breathability, touch and appearance as well as balanced strength.
  • OTR for wallboard or gypsum board which can inhibit fungal growth is not disclosed enough. It is therefore the object of the present invention to provide breathable polyolefm film which shows good weatherability, water resistance and inhibits fungal growth with suitable physical properties. It will be benefits for using in construction materials i.e. laminated on wallboard or gypsum board.
  • the present invention related to a breathable polyolefm film for building materials comprising (a) 20 - 70 parts by weight of low density polyethylene, (b) 30 - 80 parts by weight of linear low density polyethylene, and (c) 0.1 - 5.0 parts by weight of filler; wherein the breathable film has oxygen transmission rate (OTR) in a range of 5000 - 50000 cc/(m 2 .day), preferably 5000 - 10000 cc/(m 2 .day).
  • OTR oxygen transmission rate
  • Figure 1 shows Tensile strength at yield (Machine direction) of the breathable film having thickness of 30 micron and 1 part by weight of silica and having various amount of LLDPE.
  • the term 'polyolefin' refers to any polymerized olefin, which can be linear, branched, cyclic, aliphatic, aromatic, substituted, or unsubstituted.
  • the present invention relates to a breathable polyolefin film comprising (a) 20 - 70 parts by weight of low density polyethylene (LDPE), (b) 30 - 80 parts by weight of linear low density polyethylene (LLDPE), and (c) 0.1 - 5.0 parts by weight of filler; wherein the breathable film has oxygen transmission rate (OTR) in a range of 5000 - 50000 cc/(m 2 .day), preferably 5000- 10000 cc/(m 2 .day).
  • OTR oxygen transmission rate
  • the LDPE is preferably in an amount of 30 - 70 parts by weight and LLDPE is preferably in an amount of 30 - 70 parts by weight.
  • Silica is preferably in an amount of 0.2 - 4 parts by weight, more preferably in an amount of 0.3-3 parts by weight.
  • the LDPE has preferably melt flow index (MI) in a range of 1 to 5, preferable 1 to 3, more preferable 1 to 2.
  • MI melt flow index
  • the LDPE having MI in this range improves melt strength of the compo- sition for easier processing by blown film extrusion. Lower MI causes difficulties in processing.
  • the melt flow index is measured according to ASTM D 1238. If there is no LDPE in the polyolefin composition, the thickness of the blown film will be difficult to be controlled and poor bubble stability will occur.
  • the LLDPE has preferably density in a range of 0.80 to 0.94 g/cc, preferable 0.87 to 0.91 g/cc. While stretching the preferably low densi- ty film, pores are easily formed then the breathable polyolefin film is obtained.
  • the LLDPE is preferably a copolymer of ethylene and olefin comonomer.
  • the olefin comonomers are 1-butene, 1-hexene, 1-octene and 4-methyl-pentene-l, preferable 1-butene and 1-octene, more preferable 1-octene.
  • the polyolefin composition has preferably melt flow index in a range of 1 to 7, preferable 1 to 5, more preferable 1 to 3.
  • the filler is preferably inorganic filler.
  • the inorganic filler preferably selected from calcium carbonate, carbon black, silica, clay, etc.
  • the filler is preferably dispersed throughout the polymer matrix so pores are easily formed at the interface between filler particle and polymer matrix during film stretching.
  • the most preferred filler is silica.
  • the breathable polyolefin film comprising silica is clear whereas comprising CaC0 3 is white.
  • the polyolefin composition further preferably comprising ethylene vinyl acetate (EVA).
  • EVA ethylene vinyl acetate
  • the preferable amount could include the EVA 0.1 to 30 parts by weight, more preferable 10 to 20 parts by weight with respect to the total weight of the polyolefin composition.
  • the breathable polyolefin film consists of LDPE, LLDPE and filler and, optionally, ethylenevinylacetate, preferably in the amounts mentioned to be preferred above.
  • the breathable polyolefin film has preferably a thickness in the range of 20 to 60 microns, more preferably 30 to 40 microns.
  • the breathable polyolefin film is preferably produced by various methods such as blown film process, cast film process.
  • the blow-up ratio (BUR) for preparing the breathable polyolefin film is preferably in the range of 2 to 6, more preferable 3 to 5.
  • the stretching ratio for preparing the breathable polyolefin film is preferably in the range of 4 to 7. Lower BUR or stretching ratio than this range causes the film having low OTR.
  • the breathable polyolefin film preferably has tensile strength at least 200 kg/cm 2 . Poorer tensile strength is not suitable for using in building material application.
  • the present invention preferably relates to a building material comprising the breathable polyolefin film described above, wherein the breathable polyolefin film is coated on at least one surface of the building material.
  • building material refers to any material which is used for construction purposes including naturally occurring substances, synthetic substances, man-made products, and building products.
  • the invention relates in a preferred embodiment to a gypsum board coated with a breathable polyolefin film.
  • the breathable polyolefin film is preferably to coat or laminate directly on gypsum and/or on paper that coated on gypsum of a gypsum board to improve the water resistance properties of the gypsum board.
  • the gypsum board coated with the breathable polyolefin film has high water resistance and scratch resistance compared with the gypsum board without the breathable polyolefin film.
  • the breathable polyolefin film also allows vapor and air permeabil- ity. So the gypsum board coated with breathable polyolefin film can be used outdoor while the conventional gypsum board coated with paper cannot due to its poor water resistance.
  • the suitable OTR value of the breathable polyolefin film allow moisture inside the gypsum board to evaporate. This result in preventing the gypsum board from arching or bending due to the difference evaporation rate between each side of the board, especially when the gypsum board is one-side coated.
  • Low density polyehtylene (LDPE), Linear low density polyethylene (LLDPE) and silica as an additive were blended at various ratio as shown in Table 1.
  • the obtained blend has melt flow index in the range of 1 to 3, measured according to ASTM D 1238.
  • the film samples were prepared by blow molding process at blow-up ratio of 3 and tested for mechanical properties, permeability and fungal growth properties.
  • Oxygen transmission rate was tested by using oxygen transmission rate test instrument (OX-TRAN - 2/21 Module MT) following ASTM D3958.
  • WVTR Water vapor transmission rate
  • thinner film shows higher OTR and WVTR value.
  • Sample 1 with thickness of 30 micron shows higher OTR and WVTR value comparing to sample 2 with thick- ness of 90 micron.
  • Figure 1 shows tensile strength in machine direction of the breathable film having the thickness of 30 micron and 1 part by weight of silica at various amount of LLDPE (Sample 3, 4 and 5). Tensile strength tends to increase when there is increase in an amount of LLDPE.
  • Gypsum board was attached with the breathable film having thickness of 30 micron on its surfaces for fungal growth testing compared to the gypsum board without breathable film (comparative sample). The results show that fungal growth can be observed on gypsum board of comparative sample, while no fungal growth on gypsum board attached with the breathable film was observed.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

La présente invention concerne un film perméable à l'air pour matériaux de construction comprenant : (a) 20 à 70 parties en masse de polyéthylène basse densité, (b) 30 à 80 parties en masse de polyéthylène linéaire basse densité, et (c) 0,1 à 5,0 parties en masse de charge ; où la pellicule perméable à l'air présente un taux de transmission d'oxygène (OTR) dans une plage de 5000 à 50 000 cc/(m2.jour). La pellicule de polyoléfine perméable à l'air présente une bonne résistance aux intempéries ainsi qu'une résistance à l'eau, et inhibe la croissance fongique avec des propriétés physiques adaptées.
PCT/TH2017/000037 2016-05-12 2017-05-09 Pellicule de polyoléfine perméable à l'air Ceased WO2017196268A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EPEP16169418 2016-05-12
EP16169418 2016-05-12
EP16169672 2016-05-13
EPEP16169672 2016-05-13

Publications (1)

Publication Number Publication Date
WO2017196268A1 true WO2017196268A1 (fr) 2017-11-16

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0253667A2 (fr) * 1986-07-16 1988-01-20 Sumitomo Chemical Company, Limited Feuille perméable au gaz et son procédé de fabrication
EP0409615A2 (fr) * 1989-07-20 1991-01-23 E.I. Du Pont De Nemours And Company Pellicule monocouche rétractable tenace pour produits humides
WO1998005501A1 (fr) 1996-07-31 1998-02-12 Exxon Chemical Patents Inc. Feuils charges en polyolefine presentant une vitesse accrue de transmission de vapeur d'eau et leur procede de fabrication
WO2002066547A2 (fr) * 2001-02-16 2002-08-29 Kimberly-Clark Worldwide, Inc. Films respirants amincis par etirage dotes d'une meilleure respirabilite
US20130295364A1 (en) 2012-05-01 2013-11-07 Dow Global Technologies Llc Polyolefin based films with improved water vapor transmission rates
US20160176168A1 (en) 2014-12-19 2016-06-23 Polymer Group, Inc. Monolithic Breathable Film and Composite Manufactured Therefrom

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0253667A2 (fr) * 1986-07-16 1988-01-20 Sumitomo Chemical Company, Limited Feuille perméable au gaz et son procédé de fabrication
US4829096A (en) 1986-07-16 1989-05-09 Sumitomo Chemical Company, Limited Breathable film and process for production of the same
EP0409615A2 (fr) * 1989-07-20 1991-01-23 E.I. Du Pont De Nemours And Company Pellicule monocouche rétractable tenace pour produits humides
WO1998005501A1 (fr) 1996-07-31 1998-02-12 Exxon Chemical Patents Inc. Feuils charges en polyolefine presentant une vitesse accrue de transmission de vapeur d'eau et leur procede de fabrication
WO2002066547A2 (fr) * 2001-02-16 2002-08-29 Kimberly-Clark Worldwide, Inc. Films respirants amincis par etirage dotes d'une meilleure respirabilite
US20130295364A1 (en) 2012-05-01 2013-11-07 Dow Global Technologies Llc Polyolefin based films with improved water vapor transmission rates
US20160176168A1 (en) 2014-12-19 2016-06-23 Polymer Group, Inc. Monolithic Breathable Film and Composite Manufactured Therefrom

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