JP5941045B2 - 収縮フィルム及びその製造方法 - Google Patents
収縮フィルム及びその製造方法 Download PDFInfo
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- 229910052751 metal Inorganic materials 0.000 claims description 16
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- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 24
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- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
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- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
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- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 2
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- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
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- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
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- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
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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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
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- 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
- B29C55/08—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique transverse to the direction of feed
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- 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B32B15/09—Layered products comprising a layer of metal comprising metal 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 comprising polyesters
-
- 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
- B32B27/08—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 synthetic resin
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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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
- C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
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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
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/20—Metallic material, boron or silicon on organic substrates
-
- 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
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
-
- 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
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
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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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T428/31565—Next to polyester [polyethylene terephthalate, etc.]
-
- 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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T428/31605—Next to free metal
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Biological Depolymerization Polymers (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Description
原料樹脂であるポリ乳酸樹脂とポリラクトン(株式会社ダイセル、Celgreen)60重量%及び平均粒径2.7μmの二酸化ケイ素を、最終フィルムで450ppmになるように添加し、ブレンドしてマスターバッチを製造した。前記マスターバッチを熱風乾燥器で110℃で2時間乾燥した後、これを200℃で溶融押出し、25℃の冷却ローラを介して急冷させることにより、固形化された未延伸フィルムを製造した。
ポリラクトンの含量を45重量%にしてマスターバッチを製造したことを除き、上記の実施例1と同様の方法でフィルムを製造して、フィルムの物性を表1に示した。
ポリラクトンの含量を30重量%にしてマスターバッチを製造したことを除き、上記の実施例1と同様の方法でフィルムを製造して、フィルムの物性を表1に示した。
ポリラクトンの代りにポリブチレンサクシネート樹脂を用いてマスターバッチを製造したことを除き、上記の実施例1と同様の方法でフィルムを製造して、フィルムの物性を表1に示した。
金属蒸着層の厚さが200Åであることを除き、上記の実施例1と同様の方法でフィルムを製造して、フィルムの物性を表1に示した。
インラインコーティング工程を省略し、熱処理区間の温度が30℃であることを除き、上記の実施例1と同様の方法でフィルムを製造して、フィルムの物性を表1に示した。
インラインコーティング工程を省略し、熱処理区間の温度が150℃であることを除き、上記の実施例1と同様の方法でフィルムを製造して、フィルムの物性を表1に示した。
自動旋光計(Automatic Polarimeter、P‐1020)を用いてナトリウムランプの589nm波長で測定した値をソフトウェアで計算して乳酸の含有量を計算した。
ASTM D 882に基づいて測定し、引張試験機(Tensile Test Machine)を利用してフィルムの幅方向に対する引張強度を測定した。
フィルムの長さ方向(MD)と幅方向(TD)に対して15mm(MD)×400mm(TD)サイズの長方形に裁断し、TD方向の両端から50mm地点でMD方向に実線を引いて有効測定長さが300mmの試験片を製作した。その後、ピンセットなどを用いて、左右に関わらず試験片の一端から50mm以内の地点を取って、全体試験片を90℃±0.5℃の温水中に無荷重状態にして完全に浸した状態で10秒間熱収縮させた後、常温で1分間放置した。初期の実線で表示したTD方向の300mm間隔の減少された長さを測定し、フィルムの幅(TD)方向の熱収縮率を下記式1で求めた。
熱収縮率(%)=(300mm−収縮後の長さ)/300mm×100
ASTM D‐1003に基づいて測定し、生分解性柔軟/収縮フィルムの辺部2ヶ所、中心部1ヶ所で無作為に七つの部分を抽出し、それぞれ5cm×5cmのサイズに切片した後、不透明度測定機(Film Haze Meter、NDH‐5000)に入れて不透明度(Haze、%)を測定し、最大値及び最小値を除いた五つの値の平均値を求めることにより、不透明度(Haze、%)を算出した。
KS M3100‐1(2003)に基づいて測定した生分解度値の標準物質との比を下記式2で求めた。
生分解率(%)=(試験片の生分解度/標準物質の生分解度)*100
蒸着フィルムのアルミニウム蒸着層において、熱硬化性ポリウレタン系接着剤(Neoforce、KUB‐338S)50wt%と、溶剤として酢酸エチル50wt%を用いて、ポリウレタン系硬化剤(Neoforce、CL‐100)を接着剤100wt%に対して11wt%を用いる。ラミネート時、5Kgのロールを用いてラミネート区間を二回往復することにより1次ラミネートした後、1次ラミネートされたサンプルをラミネータに無熱、Speed Level3で2次ラミネートする。このサンプルを16g/cm2の圧力下で60℃の熱風オーブンで15時間硬化させる。このようにラミネートされたサンプルを幅1cm間隔で切片した後、摩擦係数測定機を利用して180゜peel方式でアルミニウム蒸着層とポリウレタンコーティング層との間の剥離強度(g/cm)を測定した。
ASTM D‐3985に基づいて測定し、最終蒸着フィルムをA4サイズに切片した後、透湿度測定機(Permatran‐W、Model3/61)に入れて38℃±2℃、100RH%で水分透過率(g/m2×day)を7回測定して、最大値及び最小値を除いた五つの値の平均値を求めることにより、水分透過率(g/m2×day)を算出した。
Claims (8)
- ポリ乳酸樹脂10〜99重量%、脂肪族または脂肪族‐芳香族ポリエステル樹脂1〜90重量%を含有する生分解性フィルムと、
前記生分解性フィルムの一面に水分散ポリウレタンコーティング組成物が塗布されて形成されたポリウレタンコーティング層と、
前記ポリウレタンコーティング層の上部に形成される金属蒸着層と、
を含み、
前記生分解性フィルムは、不透明度が30%以下で、生分解度が95%以上であり、水槽で90℃、10秒間収縮させた時における機械方向(MD)及びその垂直方向(TD)の収縮率が5〜60%であって、引張強度が100〜600Kg/cm 2 である、収縮フィルム。 - 前記水分散ポリウレタンコーティング組成物は、ポリウレタン系バインダー樹脂0.5〜1.0重量%、シリコーン系濡れ剤0.01〜0.5重量%及び残りは水を含有する、請求項1に記載の収縮フィルム。
- 前記金属蒸着層はアルミニウム蒸着層であり、厚さが200Å〜1000Åである、請求項1に記載の収縮フィルム。
- 前記収縮フィルムは、前記生分解性フィルムと金属蒸着層との間の剥離強度が常温及び熱水処理(95℃、30分)で100g/cm以上であり、水分透過率が38℃±2℃、100RH%で1×10−2〜1×10−4g/m2×dayである、請求項1乃至3の何れか一項に記載の収縮フィルム。
- a)ポリ乳酸樹脂10〜99重量%、脂肪族または脂肪族‐芳香族ポリエステル樹脂1〜90重量%を溶融押出することにより、未延伸フィルムを製造する段階と、
b)前記未延伸フィルムの一面に、水分散ポリウレタンコーティング組成物をインラインコーティング工程により塗布する段階と、
c)前記水分散ポリウレタンコーティング組成物が塗布された未延伸フィルムを幅方向(TD)に一軸延伸する段階と、
d)前記一軸延伸されたフィルムを50〜100℃で熱処理する段階と、
e)前記一軸延伸フィルムのポリウレタンコーティング層の上部に200Å〜1000Å厚さの金属蒸着層を形成する段階と、
を含む収縮フィルムの製造方法。 - 前記a)段階の後に、前記未延伸フィルムを10〜60℃の冷却ローラを介して急冷させる段階をさらに含む、請求項5に記載の収縮フィルムの製造方法。
- 前記c)段階の延伸は、60〜80℃で3〜6倍延伸する、請求項5に記載の収縮フィルムの製造方法。
- 前記水分散ポリウレタンコーティング組成物は、ポリウレタン系バインダー樹脂0.5〜1.0重量%、シリコーン系濡れ剤0.01〜0.5重量%及び残りは水を含有する、請求項7に記載の収縮フィルムの製造方法。
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