WO2022153893A1 - 延伸フィルム、積層体および包装体 - Google Patents
延伸フィルム、積層体および包装体 Download PDFInfo
- Publication number
- WO2022153893A1 WO2022153893A1 PCT/JP2022/000092 JP2022000092W WO2022153893A1 WO 2022153893 A1 WO2022153893 A1 WO 2022153893A1 JP 2022000092 W JP2022000092 W JP 2022000092W WO 2022153893 A1 WO2022153893 A1 WO 2022153893A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stretched film
- resin composition
- polyethylene
- load
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
-
- 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
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- C—CHEMISTRY; METALLURGY
- 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
-
- 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
- B32B2307/51—Elastic
-
- 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
Definitions
- the present invention relates to stretched films, laminates and packages.
- a film made of various resins is used as a base material for general packaging materials, and the properties required for an ALLPE base material include rigidity, low shrinkage, and strength.
- High-density polyethylene (HDPE) is suitable as a resin from the viewpoint of rigidity and low shrinkage, but there is a problem that the vertical tear strength of HDPE is very weak.
- the stretched film of the present invention is characterized by comprising a polyethylene-based resin composition satisfying the following requirements (1) to (3).
- the melt flow rate (190 ° C., 2.16 kg load) is 0.01 g / 10 min or more and 2.0 g / 10 min or less.
- the density is 935 kg / m 3 or more and 970 kg / m 3 or less.
- the ratio I 21 / I 2 of the melt index (I 21 : 190 ° C., 21.6 kg load) and the melt index (I 2 : 190 ° C., 2.16 kg load) is 80 or more.
- the stretched film of the present invention has an excellent balance of rigidity, low shrinkage and longitudinal tear strength, it can be suitably used as a recyclable packaging material.
- the stretched film of the present invention comprises a polyethylene-based resin composition (hereinafter, also simply referred to as “resin composition”) that satisfies the following requirements (1) to (3).
- the melt flow rate (MFR: 190 ° C., 2.16 kg load) is 0.01 g / 10 min or more and 2.0 g / 10 min or less.
- the density is 935 kg / m 3 or more and 970 kg / m 3 or less.
- the ratio I 21 / I 2 of the melt index (I 21 : 190 ° C., 21.6 kg load) and the melt index (I 2 : 190 ° C., 2.16 kg load) is 80 or more.
- the lower limit of the MFR (190 ° C., 2.16 kg load) of the resin composition is usually 0.01 g / 10 min or more, preferably 0.02 g / 10 min or more, and the upper limit is usually 2.0 g / 10 min or less, preferably 2.0 g / 10 min or more. Is 1.5 g / 10 min or less, more preferably 1.0 g / 10 min or less.
- the lower limit of the density of the resin composition is usually 935 kg / m 3 or more, preferably 938 kg / m 3 or more, more preferably 940 kg / m 3 or more, and the upper limit is usually 970 kg / m 3 or less, preferably 968 kg / m 3. It is m 3 or less, more preferably 965 kg / m 3 or less.
- the density is a value measured in accordance with JIS K7112 (density gradient tube method).
- the lower limit of the ratio I 21 / I 2 of the melt index (I 21 : 190 ° C., 21.6 kg load) and the melt index (I 2 : 190 ° C., 2.16 kg load) of the resin composition is usually 80 or more, preferably 80 or more. Is 100 or more, more preferably 120 or more, and the upper limit is preferably 300 or less, more preferably 250 or less. When I 21 / I 2 of the resin composition is within the above range, strength and extrudability can be obtained.
- the melt index I 21 is a value measured at 190 ° C. and a load of 21.6 kg according to JIS K7210
- the melt index I 2 is a value measured at 190 ° C. and a load of 2.16 kg according to JIS K7210. It is a value measured by.
- the resin composition is not particularly limited as long as it is a polyethylene-based resin composition satisfying the above requirements (1) to (3), but the polyethylene-based polymer as a resin component contained in the resin composition is ethylene alone. It may be a polymer, or it may be an ethylene-based copolymer of ethylene and other monomers. As the ethylene-based copolymer, a copolymer of ethylene and an ⁇ -olefin having 3 or more carbon atoms (ethylene / ⁇ -olefin copolymer) is particularly preferable.
- ⁇ -olefin in the ethylene / ⁇ -olefin copolymer examples include propylene, butene, 1-octene, and 1-hexene.
- a copolymer can be produced by using a known catalyst such as a Ziegler-Natta catalyst or a metallocene catalyst.
- other low-density polyethylene may be used.
- one or a combination of two or more types of polyethylene satisfying each of the above characteristics can be selected from commercially available polyethylene-based resins and used as a resin component.
- the polyethylene-based resin containing an ethylene / ⁇ -olefin copolymer examples include linear low-density polyethylene.
- the polyethylene-based polymer may contain a structural unit derived from one or more types of biomass-derived monomers (ethylene).
- the same type of monomer constituting the polymer may be only a biomass-derived monomer, or may be both a biomass-derived monomer and a fossil fuel-derived monomer.
- a biomass-derived monomer is a monomer made from any renewable natural raw material such as plant-derived or animal-derived, including fungi, yeasts, algae and bacteria, and its residue, and contains 1 ⁇ 14C isotope as carbon. It is contained in a ratio of about 10 to -12 , and the biomass carbon concentration (pMC) measured according to ASTM D6866 is about 100 (pMC).
- the biomass-derived monomer (ethylene) can be obtained, for example, by a conventionally known method.
- the polyethylene-based polymer contains a structural unit derived from a biomass-derived monomer from the viewpoint of reducing the environmental load. If the polymer production conditions such as the polymerization catalyst and the polymerization temperature are the same, even if the raw material olefin contains a biomass-derived olefin, the molecular structure other than that containing the 14C isotope at a ratio of about 1 ⁇ 10 -12 is , Equivalent to a polyethylene-based polymer composed of fossil fuel-derived monomers. Therefore, it is said that these performances do not change.
- the ratio (molecular weight distribution; Mw / Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) measured by gel permeation chromatography (GPC) may exceed 20. It is preferably 21 or more, more preferably 22 or more, and particularly preferably 22 or more. The upper limit is not particularly limited, but is preferably 50 or less, and more preferably 48 or less. When Mw / Mn of the resin composition is in the range as described above, a stretched film having excellent tear strength can be obtained.
- the resin composition contains various additives, for example, weather-resistant stabilizers, heat-resistant stabilizers, and antistatic agents, which are added to general polyolefin-based resin compositions, if necessary, as long as the object of the present invention is not impaired. It may contain at least one of an inhibitor, an anti-fog agent, an anti-blocking agent, a slip agent, a lubricant, a pigment, a drip agent, a nucleating agent and the like.
- the stretched film of the present invention is characterized by comprising the polyethylene-based resin composition of the present invention described above.
- the stretched film of the present invention may be a uniaxially stretched film or a biaxially stretched film.
- the draw ratio in the stretched film of the present invention is preferably 2.0 times or more, more preferably 2.5 times or more, particularly preferably 3.0 times or more, and most preferably 3.1 times or more.
- the upper limit of the draw ratio is not particularly limited, but is preferably 60 times or less, more preferably 50 times or less. When the draw ratio is within the above range, rigidity and strength can be obtained.
- the thickness of the stretched film of the present invention may be appropriately set according to various uses, but in general, the lower limit is preferably 5 ⁇ m or more, more preferably 10 ⁇ m or more, and the upper limit is preferably 150 ⁇ m or less. More preferably, it is 100 ⁇ m or less. When the thickness of the stretched film is within the above range, the rigidity and strength of the packaging material can be balanced.
- the method for producing the stretched film of the present invention is not particularly limited, and examples thereof include a method of stretching a film (stretched raw fabric) obtained by a known melt extrusion molding method.
- a method of stretching the stretched raw film a method of simultaneously or sequentially biaxially stretching in the vertical and horizontal directions by the tenter method, a method of simultaneously biaxially stretching in the vertical and horizontal methods by the tubular method, or a difference in the rotation speed ratio of two or more rolls.
- a method of uniaxially stretching the film in the flow direction of the film can be mentioned.
- the uniaxial stretching is carried out in a roll stretching machine, preheated by a preheating roll, and then uniaxially stretched in the MD direction (take-up speed direction). From the viewpoint of increasing the production efficiency, it is preferable to preheat the stretched raw fabric and immediately uniaxially stretch it in the MD direction.
- the uniaxial stretching in the present invention means stretching in the uniaxial direction, but may be stretched in a direction different from the uniaxial direction to the extent that the effect of the present invention is not impaired. This is because, depending on the stretching equipment used, even if an attempt is made to stretch in the uniaxial direction, the stretching may be substantially performed in a direction different from the uniaxial direction.
- the stretched film after stretching may be annealed if necessary.
- the annealing treatment can be performed by bringing the stretched sheet into contact with a heating roll.
- the stretched film of the present invention preferably has an elastic modulus in the MD direction of more than 1600 MPa, more preferably 1700 MPa or more.
- the upper limit of the elastic modulus is not particularly limited, but in reality, it is 7,000 MPa or less.
- the elastic modulus in the MD direction is in the range as described above, the rigidity of the film can be obtained.
- the laminate of the present invention is characterized by including a layer made of the stretched film of the present invention described above.
- the laminate of the present invention may include a plurality of layers made of the stretched film of the present invention.
- the stretched film of the present invention described above is preferably used as a base material in a laminate. As another layer in the laminated body of the present invention, it can be appropriately adopted depending on the intended use.
- the laminate of the present invention can be produced by a known method, and examples thereof include coextrusion molding of one or more types of thermoplastic resins, extrusion lamination, dry lamination, and thermal lamination.
- the package of the present invention is characterized by including a layer made of the stretched film of the present invention described above.
- a layer made of the stretched film of the present invention described above For example, it can be obtained by forming the above-mentioned laminate of the present invention into a bag-shaped container, filling it with an object to be packaged (contents) for various purposes, and heat-sealing it.
- MFR melt index
- density density
- molecular weight distribution Mw / Mn
- elastic modulus tear strength and heat shrinkage
- melt index I 21 was measured at 190 ° C. and a load of 21.6 kg according to JIS K7210, and the melt index I 2 was measured at 190 ° C. and a load of 2.16 kg according to JIS K7210. From these, the melt index ratio I 21 / I 2 was calculated.
- Mw / Mn ⁇ Molecular weight distribution (Mw / Mn)>
- the weight average molecular weight (Mw), number average molecular weight (Mn), and molecular weight distribution (Mw / Mn) are polystyrene-equivalent numerical values measured by gel permeation chromatography (GPC).
- the measuring device and conditions are as follows.
- the molecular weight was calculated based on a conversion method by preparing a calibration curve using commercially available monodisperse polystyrene.
- the Elmendorf tear strength was measured according to JIS K 7128-2 using an Elmendorf tear tester manufactured by Toyo Seiki Seisakusho Co., Ltd. The case where the cut is made in the film pick-up direction is defined as the MD direction.
- Heat shrinkage rate (100 mm-length after heating) / 100 mm x 100
- Example 1 As a polyethylene-based resin composition, "HIZEX 7000F" manufactured by Prime Polymer Co., Ltd. having an MFR of 0.04 g / 10 min, a density of 952 kg / m 3 , I 21 / I 2 of 178, and Mw / Mn of 42 was used. After melt-kneading at 200 ° C. with an extruder, a raw film having a thickness of 125 ⁇ m was formed by an inflation molding machine. This raw film was uniaxially stretched with a heating roll at a draw ratio of 5 times while heating at 115 ° C. to obtain a uniaxially stretched film having a thickness of 25 ⁇ m. The elastic modulus, tear strength and heat shrinkage of the obtained stretched film were measured. The results are shown in Table 1.
- Example 2 As the polyethylene-based resin composition, "HIZEX 6300M” manufactured by Prime Polymer Co., Ltd. having an MFR of 0.1 g / 10 min, a density of 950 kg / m 3 , I 21 / I 2 of 222, and Mw / Mn of 27 was used. Except for this, a stretched film was obtained in the same manner as in Example 1 and evaluated. The results are shown in Table 1.
- Example 3 As the polyethylene-based resin composition, "HIZEX GE100" manufactured by Prime Polymer Co., Ltd. having an MFR of 0.09 g / 10 min, a density of 954 kg / m 3 , I 21 / I 2 of 167, and Mw / Mn of 31 was used. A stretched film was obtained and evaluated in the same manner as in Example 1 except that the raw film was heated to 120 ° C. with a heating roll. The results are shown in Table 1.
- Molding machine 65mm ⁇ inflation molding machine made by Modern Machinery Die: 125mm ⁇ (diameter) 4.0mm (lip width) Molding temperature: 190 ° C Extrusion amount: 50 kg / h Pick-up speed: 20.5 m / min
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
本発明の延伸フィルムは、下記要件(1)~(3)を満たすポリエチレン系樹脂組成物(以下、単に「樹脂組成物」ともいう。)からなる。(1)メルトフローレート(MFR:190℃、2.16kg荷重)が0.01g/10min以上2.0g/10min以下である。(2)密度が935kg/m3以上970kg/m3以下である。(3)メルトインデックス(I21:190℃、21.6kg荷重)とメルトインデックス(I2:190℃、2.16kg荷重)の比I21/I2が80以上である。
<要件(1)>
前記樹脂組成物のMFR(190℃、2.16kg荷重)の下限は、通常0.01g/10min以上、好ましくは0.02g/10min以上であり、上限は、通常2.0g/10min以下、好ましくは1.5g/10min以下、より好ましくは1.0g/10min以下である。前記樹脂組成物のMFRが前記範囲内であることにより、強度と押出性が得られる。
前記樹脂組成物の密度の下限は、通常935kg/m3以上、好ましくは938kg/m3以上、より好ましくは940kg/m3以上であり、上限は、通常970kg/m3以下、好ましくは968kg/m3以下、より好ましくは965kg/m3以下である。前記樹脂組成物の密度が前記範囲内であることにより、剛性と強度が得られる。なお、前記密度は、JIS K7112(密度勾配管法)に準拠して測定される値である。
前記樹脂組成物のメルトインデックス(I21:190℃、21.6kg荷重)とメルトインデックス(I2:190℃、2.16kg荷重)の比I21/I2の下限は、通常80以上、好ましくは100以上、より好ましくは120以上であり、上限は、好ましくは300以下、より好ましくは250以下である。前記樹脂組成物のI21/I2が前記範囲内であることにより、強度と押出性が得られる。
前記樹脂組成物は、上記要件(1)~(3)を満たすポリエチレン系樹脂組成物であれば特に限定されないが、前記樹脂組成物に含まれる樹脂成分としてのポリエチレン系重合体は、エチレンの単独重合体であってもよいし、エチレンとその他のモノマーとのエチレン系共重合体であってもよい。エチレン系共重合体としては、特に、エチレンと炭素原子数3以上のα-オレフィンの共重合体(エチレン・α-オレフィン共重合体)が好ましい。エチレン・α-オレフィン共重合体におけるα-オレフィンの具体例としては、プロピレン、ブテン、1-オクテン、1-ヘキセンが挙げられる。このような共重合体は、チーグラーナッタ触媒やメタロセン触媒といった公知の触媒を用いて製造することができる。また、樹脂成分としてエチレンとα-オレフィンの共重合体に加えて、他の低密度ポリエチレンを用いてもよい。本発明では、市販のポリエチレン系樹脂から、上記各特性を満足するポリエチレンの1種または2種以上の組合せを選択して樹脂成分として使用することができる。エチレン・α-オレフィン共重合体を含むポリエチレン系樹脂としては、直鎖状低密度ポリエチレンを挙げることができる。
本発明の延伸フィルムは、上述した本発明のポリエチレン系樹脂組成物からなることを特徴とする。本発明の延伸フィルムは、一軸延伸フィルムでも二軸延伸フィルムでもよい。
本発明の積層体は、上述した本発明の延伸フィルムからなる層を含むことを特徴とする。本発明の積層体は、本発明の延伸フィルムからなる層を複数備える態様であってもよい。上述した本発明の延伸フィルムは積層体における基材として用いることが好ましい。本発明の積層体における他の層としては、用途に応じて適宜採用することができる。
本発明の包装体は、上述した本発明の延伸フィルムからなる層を含むことを特徴とする。例えば、上述した本発明の積層体を袋状容器にし、これに各種用途における被包装物(内容物)を充填してヒートシールすることによって得られる。
以下の実施例において、MFR、メルトインデックス、密度、分子量分布(Mw/Mn)、弾性率、引裂強度および加熱収縮率は、下記のように測定した。
JIS K7210に準拠し、190℃、2.16kg荷重(kgf)の条件下で測定した。
メルトインデックスI21は、JIS K7210に準拠して、190℃、21.6kg荷重にて測定し、メルトインデックスI2は、JIS K7210に準拠して、190℃、2.16kg荷重にて測定し、これらからメルトインデックス比I21/I2を算出した。
JIS K7112に準拠し、メルトインデックス測定時に得られるストランドを100℃で1時間熱処理し、更に室温で1時間放置した後に密度勾配管法で測定した。
重量平均分子量(Mw)、数平均分子量(Mn)、および分子量分布(Mw/Mn)は、ゲルパーミエイションクロマトグラフィー(GPC)で測定されるポリスチレン換算の数値である。測定装置および条件は、以下のとおりである。また、分子量は、市販の単分散ポリスチレンを用いて検量線を作成し、換算法に基づいて算出した。
装置:ゲル透過クロマトグラフ Alliance GP2000型(Waters社製)、
解析装置:Empower2(Waters社製)、
カラム:TSKgel GMH6-HT×2+TSKgel GMH6-HTL×2(7.5mmI.D.×30cm、東ソー社製)、
カラム温度:140℃、
移動相:o-ジクロロベンゼン(0.025%BHT含有)、
検出器:示差屈折計(RI)、流速:1.0mL/min、
注入量:400μL、
サンプリング時間間隔:1s、
カラム較正:単分散ポリスチレン(東ソー社製)、
分子量換算:旧法EPR換算/粘度を考慮した較正法。
フィルムからJIS K6781に準ずる大きさのダンベルを打ち抜き試験片とし、フィルムの引取方向と平行に打ち抜く場合をMD(縦方向)とした。万能材料試験機のエアチャックに試験片をセットし、チャック間距離80mm、引張速度200mm/分で引張試験を行い、初期応力の変位に対する傾きを弾性率とした。
エルメンドルフ引裂強度は、JIS K 7128-2に準じ、株式会社東洋精機製作所のエルメンドルフ引裂試験機を用いて測定した。切れ目をフィルムの引き取り方向に入れる場合をMD方向とする。
延伸フィルムを10mm幅×100mm長さの短冊状にカットし、長手方向を引き取り方向(MD)とした。カットしたフィルムを100℃に熱したエアオーブンに入れ、15分間加熱し、フィルムの長さを確認した。加熱収縮率は以下の通り算出した。
加熱収縮率[%]=(100mm-加熱後の長さmm)/100mm×100
ポリエチレン系樹脂組成物として、MFRが0.04g/10min、密度が952kg/m3、I21/I2が178、Mw/Mnが42である(株)プライムポリマー製「ハイゼックス7000F」を用いて、押出機にて200℃で溶融混練した後、厚さ125μmの原反フィルムをインフレーション成形機にて製膜した。この原反フィルムを、加熱ロールにて、115℃に加熱しながら延伸倍率5倍で一軸延伸して、厚さ25μmの一軸延伸フィルムを得た。得られた延伸フィルムの弾性率、引裂強度および加熱収縮率を測定した。結果を表1に示す。
ポリエチレン系樹脂組成物として、MFRが0.1g/10min、密度が950kg/m3、I21/I2が222、Mw/Mnが27である(株)プライムポリマー製「ハイゼックス6300M」を用いたこと以外は、実施例1と同様にして延伸フィルムを得て、評価を行った。結果を表1に示す。
ポリエチレン系樹脂組成物として、MFRが0.09g/10min、密度が954kg/m3、I21/I2が167、Mw/Mnが31である(株)プライムポリマー製「ハイゼックスGE100」を用いたこと、および、原反フィルムを加熱ロールにて120℃に加熱したこと以外は、実施例1と同様にして延伸フィルムを得て、評価を行った。結果を表1に示す。
ポリエチレン系樹脂組成物として、MFRが0.04g/10min、密度が952kg/m3、I21/I2が178、Mw/Mnが42である(株)プライムポリマー製「ハイゼックス7000F 」を用いて、インフレーション成形装置により、以下の条件で空冷インフレーション成形を行い、肉厚40μmのフィルム(無延伸)を製造した。得られた無延伸フィルムの弾性率および引裂強度を測定した。なお、無延伸フィルムのため、加熱収縮率については測定を行わなかった。結果を表1に示す。
成形機:モダンマシナリー製65mmφインフレーション成形機
ダイス:125mmφ(径)、4.0mm(リップ幅)
成形温度:190℃
押出し量:50kg/h
引取速度:20.5m/min
ポリエチレン系樹脂組成物として、MFRが1.1g/10min、密度が950kg/m3、I21/I2が32、Mw/Mnが6である(株)プライムポリマー製「ハイゼックス3300F 」を用いたこと以外は、比較例1と同様にして無延伸フィルムを製造し、評価を行った。結果を表1に示す。
ポリエチレン系樹脂組成物として、MFRが0.75g/10min、密度が926kg/m3、I21/I2が31、Mw/Mnが11である(株)プライムポリマー製「エボリューSP3010 」を用いたこと以外は、比較例1と同様にして無延伸フィルムを製造し、評価を行った。結果を表1に示す。
ポリエチレン系樹脂組成物として、MFRが1.1g/10min、密度が950kg/m3、I21/I2が32、Mw/Mnが6である(株)プライムポリマー製「ハイゼックス3300F」を用いたこと以外は、実施例1と同様にして延伸フィルムを得て、評価を行った。結果を表1に示す。
ポリエチレン系樹脂組成物として、MFRが0.75g/10min、密度が926kg/m3、I21/I2が31、Mw/Mnが11である(株)プライムポリマー製「エボリューSP3010 」を用いたこと以外は、実施例1と同様にして延伸フィルムを得て、評価を行った。結果を表1に示す。
Claims (6)
- 下記要件(1)~(3)を満たすポリエチレン系樹脂組成物からなる延伸フィルム:(1)メルトフローレート(190℃、2.16kg荷重)が0.01g/10min以上2.0g/10min以下である;(2)密度が935kg/m3以上970kg/m3以下である;(3)メルトインデックス(I21:190℃、21.6kg荷重)とメルトインデックス(I2:190℃、2.16kg荷重)の比I21/I2が80以上である。
- 前記ポリエチレン系樹脂組成物におけるゲルパーミエイションクロマトグラフィー(GPC)により測定される重量平均分子量(Mw)と数平均分子量(Mn)との比(分子量分布;Mw/Mn)が20を超える請求項1に記載の延伸フィルム。
- 延伸倍率が2.0倍以上である請求項1に記載の延伸フィルム。
- MD方向の弾性率が1600MPaを超える請求項1に記載の延伸フィルム。
- 請求項1~4のいずれか1項に記載の延伸フィルムからなる層を含む積層体。
- 請求項1~4のいずれか1項に記載の延伸フィルムからなる層を含む包装体。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022575537A JP7638303B2 (ja) | 2021-01-14 | 2022-01-05 | 延伸フィルム、積層体および包装体 |
| CN202280007340.XA CN116457186A (zh) | 2021-01-14 | 2022-01-05 | 拉伸膜、叠层体和包装体 |
| EP22739303.0A EP4279248A4 (en) | 2021-01-14 | 2022-01-05 | STRETCHED FILM, LAMINATED AND PACKAGING |
| US18/260,605 US20240052117A1 (en) | 2021-01-14 | 2022-01-05 | Stretched film, laminate, and package |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021004287 | 2021-01-14 | ||
| JP2021-004287 | 2021-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022153893A1 true WO2022153893A1 (ja) | 2022-07-21 |
Family
ID=82447348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2022/000092 Ceased WO2022153893A1 (ja) | 2021-01-14 | 2022-01-05 | 延伸フィルム、積層体および包装体 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240052117A1 (ja) |
| EP (1) | EP4279248A4 (ja) |
| JP (1) | JP7638303B2 (ja) |
| CN (1) | CN116457186A (ja) |
| WO (1) | WO2022153893A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024203194A1 (ja) | 2023-03-29 | 2024-10-03 | 株式会社プライムポリマー | フィルム、積層体および包装材 |
| WO2025028357A1 (ja) * | 2023-07-28 | 2025-02-06 | 株式会社プライムポリマー | 二軸延伸フィルムおよびその製造方法 |
| EP4516842A4 (en) * | 2022-06-02 | 2025-08-13 | Ci Takiron Corp | STRETCHED FILM |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08300439A (ja) * | 1995-05-10 | 1996-11-19 | Susumu Sakai | 管状二軸延伸フイルムの製造方法 |
| JPH10292059A (ja) * | 1997-02-19 | 1998-11-04 | Mitsui Chem Inc | 通気性フィルムの製造方法 |
| JP2005538218A (ja) * | 2002-09-05 | 2005-12-15 | エクソンモービル・ケミカル・パテンツ・インク | 延伸フィルム |
| JP2007269917A (ja) * | 2006-03-30 | 2007-10-18 | Mitsui Chemicals Inc | 延伸フィルムの製造方法 |
| JP2007529618A (ja) * | 2004-03-19 | 2007-10-25 | ダウ グローバル テクノロジーズ インコーポレイティド | ポリマー配合物から製造されるフィルム層 |
| JP2007297583A (ja) * | 2006-04-03 | 2007-11-15 | Mitsubishi Plastics Ind Ltd | 多孔質フィルム |
| WO2019172375A1 (ja) * | 2018-03-09 | 2019-09-12 | 株式会社プライムポリマー | シーラント用樹脂組成物、シーラント用多層フィルム、熱融着性積層フィルムおよび包装体 |
| JP2020121455A (ja) | 2019-01-30 | 2020-08-13 | 凸版印刷株式会社 | 包装材料およびリサイクル方法 |
| US20200369841A1 (en) * | 2016-10-14 | 2020-11-26 | Exxonmobil Chemical Patents Inc. | Oriented Films Comprising Ethylene-Based Polymers and Methods of Making the Same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1039453A (ja) * | 1996-07-18 | 1998-02-13 | Fuji Photo Film Co Ltd | 易開封性感光材料包装体及びその製造方法 |
| JP2001131356A (ja) | 1999-11-02 | 2001-05-15 | Bando Chem Ind Ltd | カレンダー加工用ポリオレフィン樹脂とそれより得られるフィルム |
| JP4468303B2 (ja) * | 2003-09-19 | 2010-05-26 | 株式会社プライムポリマー | 延伸フィルム |
| CN100543049C (zh) * | 2004-08-16 | 2009-09-23 | 三井化学株式会社 | 乙烯系聚合物及其用途 |
| JP5316671B2 (ja) | 2012-04-20 | 2013-10-16 | 三菱樹脂株式会社 | 非水系電解液二次電池用セパレータ及びそれを用いた非水系電解液二次電池 |
-
2022
- 2022-01-05 US US18/260,605 patent/US20240052117A1/en active Pending
- 2022-01-05 WO PCT/JP2022/000092 patent/WO2022153893A1/ja not_active Ceased
- 2022-01-05 CN CN202280007340.XA patent/CN116457186A/zh active Pending
- 2022-01-05 JP JP2022575537A patent/JP7638303B2/ja active Active
- 2022-01-05 EP EP22739303.0A patent/EP4279248A4/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08300439A (ja) * | 1995-05-10 | 1996-11-19 | Susumu Sakai | 管状二軸延伸フイルムの製造方法 |
| JPH10292059A (ja) * | 1997-02-19 | 1998-11-04 | Mitsui Chem Inc | 通気性フィルムの製造方法 |
| JP2005538218A (ja) * | 2002-09-05 | 2005-12-15 | エクソンモービル・ケミカル・パテンツ・インク | 延伸フィルム |
| JP2007529618A (ja) * | 2004-03-19 | 2007-10-25 | ダウ グローバル テクノロジーズ インコーポレイティド | ポリマー配合物から製造されるフィルム層 |
| JP2007269917A (ja) * | 2006-03-30 | 2007-10-18 | Mitsui Chemicals Inc | 延伸フィルムの製造方法 |
| JP2007297583A (ja) * | 2006-04-03 | 2007-11-15 | Mitsubishi Plastics Ind Ltd | 多孔質フィルム |
| US20200369841A1 (en) * | 2016-10-14 | 2020-11-26 | Exxonmobil Chemical Patents Inc. | Oriented Films Comprising Ethylene-Based Polymers and Methods of Making the Same |
| WO2019172375A1 (ja) * | 2018-03-09 | 2019-09-12 | 株式会社プライムポリマー | シーラント用樹脂組成物、シーラント用多層フィルム、熱融着性積層フィルムおよび包装体 |
| JP2020121455A (ja) | 2019-01-30 | 2020-08-13 | 凸版印刷株式会社 | 包装材料およびリサイクル方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4279248A4 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4516842A4 (en) * | 2022-06-02 | 2025-08-13 | Ci Takiron Corp | STRETCHED FILM |
| WO2024203194A1 (ja) | 2023-03-29 | 2024-10-03 | 株式会社プライムポリマー | フィルム、積層体および包装材 |
| EP4692182A1 (en) | 2023-03-29 | 2026-02-11 | Prime Polymer Co., Ltd. | Film, laminate, and packaging material |
| WO2025028357A1 (ja) * | 2023-07-28 | 2025-02-06 | 株式会社プライムポリマー | 二軸延伸フィルムおよびその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116457186A (zh) | 2023-07-18 |
| US20240052117A1 (en) | 2024-02-15 |
| JP7638303B2 (ja) | 2025-03-03 |
| EP4279248A4 (en) | 2024-11-27 |
| EP4279248A1 (en) | 2023-11-22 |
| JPWO2022153893A1 (ja) | 2022-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11858243B2 (en) | Multi-layered films oriented in the machine direction and articles comprising the same | |
| US12304179B2 (en) | Multi-layered polyethylene films oriented in the machine direction and articles comprising the same | |
| JP7638303B2 (ja) | 延伸フィルム、積層体および包装体 | |
| EP3317101B1 (en) | Multi-layered films oriented in the machine direction and articles comprising the same | |
| CN110621501A (zh) | 用于柔性封装的聚乙烯层板 | |
| CN104768754A (zh) | 适用于热成形的聚烯烃基膜 | |
| JP7238779B2 (ja) | ポリプロピレン系積層フィルム | |
| CN113302054A (zh) | 多层膜 | |
| JP6454171B2 (ja) | 二軸延伸エチレン重合体多層フィルム | |
| CN112469567B (zh) | 具有改善的抗穿刺性能的多层热塑性薄膜 | |
| WO2024203194A1 (ja) | フィルム、積層体および包装材 | |
| US20230119372A1 (en) | Ethylene resin composition and film | |
| EP4678398A1 (en) | Multilayer stretched film | |
| WO2023195382A1 (ja) | 延伸フィルム | |
| JP2024049161A (ja) | 包装フィルム、包装材および食品包装体 | |
| JP2005298642A (ja) | 二軸延伸エチレン重合体フィルム | |
| JP2024022655A (ja) | 延伸フィルム、積層体および包装体 | |
| JP2026011030A (ja) | フィルムおよび積層体 | |
| WO2025028357A1 (ja) | 二軸延伸フィルムおよびその製造方法 | |
| JP2010270227A (ja) | 二軸延伸エチレン系共重合体フィルム | |
| WO2024070894A1 (ja) | 包装フィルム、包装材および食品包装体 | |
| WO2025163458A1 (en) | Machine direction oriented film | |
| JP2024049105A (ja) | 二軸延伸ポリプロピレンフィルム、食品用包装体および食品包装体 | |
| JP2024049102A (ja) | 二軸延伸ポリプロピレンフィルム、食品用包装体および食品包装体 | |
| WO2025205975A1 (ja) | フィルム、積層体、包装材およびフィルムの製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22739303 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202280007340.X Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202317037966 Country of ref document: IN |
|
| ENP | Entry into the national phase |
Ref document number: 2022575537 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 18260605 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2022739303 Country of ref document: EP Effective date: 20230814 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 11202305089R Country of ref document: SG |
