JP5264176B2 - 生分解性樹脂発泡体および生分解性樹脂成形容器 - Google Patents
生分解性樹脂発泡体および生分解性樹脂成形容器 Download PDFInfo
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- JP5264176B2 JP5264176B2 JP2007542674A JP2007542674A JP5264176B2 JP 5264176 B2 JP5264176 B2 JP 5264176B2 JP 2007542674 A JP2007542674 A JP 2007542674A JP 2007542674 A JP2007542674 A JP 2007542674A JP 5264176 B2 JP5264176 B2 JP 5264176B2
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- biodegradable resin
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- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 1
- MMHWNKSVQDCUDE-UHFFFAOYSA-N hexanedioic acid;terephthalic acid Chemical compound OC(=O)CCCCC(O)=O.OC(=O)C1=CC=C(C(O)=O)C=C1 MMHWNKSVQDCUDE-UHFFFAOYSA-N 0.000 description 1
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- 229960001545 hydrotalcite Drugs 0.000 description 1
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- YPJCVYYCWSFGRM-UHFFFAOYSA-H iron(3+);tricarbonate Chemical compound [Fe+3].[Fe+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O YPJCVYYCWSFGRM-UHFFFAOYSA-H 0.000 description 1
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
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- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
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- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
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- 239000004745 nonwoven fabric Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
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- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
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- 150000002989 phenols Chemical class 0.000 description 1
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- 239000004632 polycaprolactone Substances 0.000 description 1
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- 239000004417 polycarbonate Substances 0.000 description 1
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- 229920000570 polyether Polymers 0.000 description 1
- 229920000379 polypropylene carbonate Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920005650 polypropylene glycol diacrylate Polymers 0.000 description 1
- 229920005651 polypropylene glycol dimethacrylate Polymers 0.000 description 1
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- 230000001737 promoting effect Effects 0.000 description 1
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- 235000015067 sauces Nutrition 0.000 description 1
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- 150000004760 silicates Chemical class 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 239000000429 sodium aluminium silicate Substances 0.000 description 1
- 235000012217 sodium aluminium silicate Nutrition 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 235000014214 soft drink Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 235000013555 soy sauce Nutrition 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
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- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
- 229940070710 valerate Drugs 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 238000004736 wide-angle X-ray diffraction Methods 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
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- 239000002023 wood Substances 0.000 description 1
- 239000011667 zinc carbonate Substances 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
- 229910000010 zinc carbonate Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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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
- C08J9/22—After-treatment of expandable particles; Forming foamed products
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
-
- 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
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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
- C08J9/0061—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
- 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
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- 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
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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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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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
- 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
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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
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
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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
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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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
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
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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
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L91/06—Waxes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1376—Foam or porous material containing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
Landscapes
- 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)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Biological Depolymerization Polymers (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
生分解性樹脂中のポリ乳酸の含有量が70質量%以上であり、
生分解性樹脂組成物中のワックスの含有量が0.2〜10質量%であり、
ワックスが天然のキャンデリラワックスまたはパラフィンワックスであり、
この発泡体を構成する生分解性樹脂の結晶化度が10%以上であり、
40℃、100%RHにおける水蒸気透過度が50g・mm/m 2 /day以下であることを特徴とする生分解性樹脂発泡体。
生分解性樹脂中のポリ乳酸の含有量が70質量%以上であり、
生分解性樹脂組成物中のワックスの含有量が0.2〜10質量%であり、
ワックスが天然のキャンデリラワックスまたはパラフィンワックスであり、
この容器を構成する生分解性樹脂の結晶化度が10%以上であり、
40℃、100%RHにおける水蒸気透過度が50g・mm/m 2 /day以下であることを特徴とする生分解性樹脂成形容器。
(1)グリコール酸、乳酸、ヒドロキシブチルカルボン酸などのヒドロキシアルキルカルボン酸、
(2)グリコリド、ラクチド、ブチロラクトン、カプロラクトンなどの脂肪族ラクトン、
(3)エチレングリコール、プロピレングリコール、ブタンジオールなどの脂肪族ジオール、
(4)ジエチレングリコール、トリエチレングリコール、エチレン/プロピレングリコール、ジヒドロキシエチルブタンなどのようなポリアルキレンエーテルのオリゴマ−、および、ポリエチレングリコール、ポリプロピレングリコール、ポリブチレンエーテルなどのポリアルキレングリコール、
(5)ポリプロピレンカーボネート、ポリブチレンカーボネート、ポリヘキサンカーボネート、ポリオクタンカーボネート、ポリデカンカーボネート等のポリアルキレンカーボネートグリコールおよびそれらのオリゴマ−、
(6)コハク酸、アジピン酸、スベリン酸、アゼライン酸、セバシン酸、デカンジカルボン酸などの脂肪族ジカルボン酸など、脂肪族ポリエステル重合原料に由来する成分を主成分として70質量%以上有するものであって、脂肪族ポリエステルのブロックおよび/またはランダム共重合体、および脂肪族ポリエステルに他の成分、例えば芳香族ポリエステル、ポリエーテル、ポリカーボネート、ポリアミド、ポリウレタン、ポリオルガノシロキサン等を30質量%以下(ブロックまたはランダム)共重合したもの、および/またはそれらの混合したもの、
をすべて包含することができる。
示差屈折率検知器を備えたゲル浸透クロマトグラフィー(GPC)装置(島津製作所社製)を用い、テトラヒドロフラン(THF)を溶出液として40℃で分析を行い、標準ポリスチレン換算で試料の分子量を求めた。なおTHFに溶けにくい試料は、少量のクロロホルムに溶解後、THFで希釈し、サンプルとした。
パ−キンエルマー社製の示差走査型熱量計DSC−7型を用い、試料を昇温速度20℃/分で測定したときの融解吸収曲線の初期極値を与える温度をガラス転移温度(Tg)とし、最大値を与える温度を融点(Tm)とした。
パーキンエルマー社製の示差走査型熱量計DSC−7型を用い、試料を昇温速度20℃/分でTm+30℃まで昇温した後、降温速度20℃/分で−50℃まで降温した際の融解吸収曲線の初期極値を与える温度を結晶化温度(Tc)とした。
DSC装置(パーキンエルマー社製、Pyrisl DSC)を用い、試料を20℃から200℃まで+500℃/分で昇温し、その後200℃で5分間保持し、結晶化させた。最終的に到達する結晶化度を1としたとき、結晶化度が0.5に達するまでの時間を結晶化速度指数(分)として求めた。
発泡体、成形容器から試料片を採取し、RAD−rBX線回折装置(理学電機工業社製)を用い、WAXD反射粉末法(X線:Cu−Kα線/50kV/200mA、スキャンスピード:2°/min)により測定した。
1.245(1−X/100)+1.29・X/100=A
の式から求め、密度法により結晶化度を決定した。そしてこの試料のX線強度を測定し、密度法の結晶化度とX線での測定との相関関係を求めた。
JIS K7210のD条件に記載の方法に準じて、温度190℃にて測定した。
得られた発泡体を水中に浸漬した際に増加する体積で、発泡体の質量を割り算して、見掛け密度を算出し、そして発泡体を構成する樹脂の真密度を見掛け密度で割り算して発泡倍率を求めた。
モコン社製の透湿度測定器(PERMATRAN−W3/31MW)を用いて、40℃、100%RHにおける水蒸気透過度(g/m2/day)を測定し、試料の厚み(mm)で換算した値(g・mm/m2/day)を求めた。この値が小さいほど防湿性が優れる。
モコン社製の酸素透過度測定器(OX−TRAN 2/20MH)を用いて、20℃、90%RHにおける酸素透過度(ml/m2/day/MPa)を測定した。この値が小さいほどガスバリア性が優れる。
押出発泡装置を用い、発泡体を製造する際の操業状態とシートの状態を観察して、下記のように評価した。
真空・圧空成形機(浅野研究所社製)を用い、容器を成形した時の成形性をみて、下記のように評価した。
シートから縦20cm×横20cmの試料片を作製し、熱風型乾燥機を用いて、温度100℃、処理時間30分で熱処理し、試料片の収縮率の測定とその状態の観察とを行い、下記ように評価した。
試料としての容器に常温の水50mlを入れ、食品包装用ラップフィルムで容器の開口をシールし、500Wの電子レンジで2分間温め、温めた後の容器の状態を目視観察し、下記ように評価した。
○:表面が若干肌荒れしているものの、変形していない。
ガラス転移温度(Tg)が57℃、融点(Tm)が168℃、重量平均分子量が10万であるポリL−乳酸(ネイチャー・ワークス社製、以下「PLA」と記す)を用い、これに平均粒径2.5μmタルクを2.0質量%ドライブレンドしたのち、温度200℃の二軸混練機(池貝社製、型番:PCM−45)に供給した。一方、架橋剤としてのエチレングリコールジメタクリレートと、ラジカル重合開始剤としてのジブチルパーオキサイドと(混合溶液の質量比率が1:2)を用い、樹脂成分100質量部に対し、それぞれ0.15質量部、0.30質量部になるよう二軸混練機の途中より注入混練して、生分解性樹脂のペレットを採取した。
キャンデリラワックスに代えて、パラフィンワックス(日本精ろう社製、パラフィンワックス155)を使用した。また炭酸ガスの添加量を1.5質量%とした。そして、それ以外は実施例2と同様にして、発泡シートを作製した。得られた発泡シートは、独立気泡からなる発泡倍率7倍相当、厚み2.0mmの均一なシートであった。
実施例2、7の発泡体の製造時に得られた発泡シートを使用して、真空・圧空成形機(浅野研究所社製)に供給し、食品用どんぶり型容器(開口部内径=150mm、底部内径=60mm、容器の絞り比(L/D)=0.5)を表2に示す条件で成形した。
Claims (2)
- 生分解性樹脂とワックスとを含有する生分解性樹脂組成物にて形成された発泡シートにより形成された発泡体であって、
生分解性樹脂中のポリ乳酸の含有量が70質量%以上であり、
生分解性樹脂組成物中のワックスの含有量が0.2〜10質量%であり、
ワックスが天然のキャンデリラワックスまたはパラフィンワックスであり、
この発泡体を構成する生分解性樹脂の結晶化度が10%以上であり、
40℃、100%RHにおける水蒸気透過度が50g・mm/m 2 /day以下であることを特徴とする生分解性樹脂発泡体。 - 生分解性樹脂とワックスとを含有する生分解性樹脂組成物にて形成された発泡シートにて成形された成形容器であって、
生分解性樹脂中のポリ乳酸の含有量が70質量%以上であり、
生分解性樹脂組成物中のワックスの含有量が0.2〜10質量%であり、
ワックスが天然のキャンデリラワックスまたはパラフィンワックスであり、
この容器を構成する生分解性樹脂の結晶化度が10%以上であり、
40℃、100%RHにおける水蒸気透過度が50g・mm/m 2 /day以下であることを特徴とする生分解性樹脂成形容器。
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- 2006-10-27 WO PCT/JP2006/321469 patent/WO2007052543A1/ja active Application Filing
- 2006-10-27 JP JP2007542674A patent/JP5264176B2/ja not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
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EP1944333A4 (en) | 2009-12-02 |
US7972669B2 (en) | 2011-07-05 |
US20090258175A1 (en) | 2009-10-15 |
KR101376642B1 (ko) | 2014-03-20 |
WO2007052543A1 (ja) | 2007-05-10 |
KR20080072815A (ko) | 2008-08-07 |
CN101268125B (zh) | 2013-03-27 |
CN101268125A (zh) | 2008-09-17 |
JPWO2007052543A1 (ja) | 2009-04-30 |
EP1944333A1 (en) | 2008-07-16 |
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