JP5186498B2 - ポリマー被覆されたヒートシール可能な包装用材料及びこれから製造された封止パッケージ - Google Patents
ポリマー被覆されたヒートシール可能な包装用材料及びこれから製造された封止パッケージ Download PDFInfo
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- JP5186498B2 JP5186498B2 JP2009521284A JP2009521284A JP5186498B2 JP 5186498 B2 JP5186498 B2 JP 5186498B2 JP 2009521284 A JP2009521284 A JP 2009521284A JP 2009521284 A JP2009521284 A JP 2009521284A JP 5186498 B2 JP5186498 B2 JP 5186498B2
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- 229920000642 polymer Polymers 0.000 title claims description 49
- 239000005022 packaging material Substances 0.000 title claims description 48
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 118
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims description 104
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 66
- 239000005977 Ethylene Substances 0.000 claims description 66
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 65
- 229910052760 oxygen Inorganic materials 0.000 claims description 65
- 239000001301 oxygen Substances 0.000 claims description 65
- 239000000178 monomer Substances 0.000 claims description 59
- 230000004888 barrier function Effects 0.000 claims description 58
- 239000000758 substrate Substances 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 30
- 238000004806 packaging method and process Methods 0.000 claims description 18
- 239000002657 fibrous material Substances 0.000 claims description 7
- 235000013305 food Nutrition 0.000 claims description 7
- 239000010410 layer Substances 0.000 description 257
- 239000000835 fiber Substances 0.000 description 20
- 239000011087 paperboard Substances 0.000 description 17
- -1 polyethylene terephthalate Polymers 0.000 description 17
- 239000004743 Polypropylene Substances 0.000 description 14
- 229920001155 polypropylene Polymers 0.000 description 14
- 239000000047 product Substances 0.000 description 14
- 230000035699 permeability Effects 0.000 description 13
- 239000004952 Polyamide Substances 0.000 description 11
- 229920002647 polyamide Polymers 0.000 description 11
- 239000004698 Polyethylene Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 239000000123 paper Substances 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- 239000011888 foil Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 229920000092 linear low density polyethylene Polymers 0.000 description 5
- 239000004707 linear low-density polyethylene Substances 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 229920000098 polyolefin Polymers 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 239000011111 cardboard Substances 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000009736 wetting Methods 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
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- 238000004519 manufacturing process Methods 0.000 description 3
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- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 239000012466 permeate Substances 0.000 description 1
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- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229920006163 vinyl copolymer Polymers 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
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- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
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- B65D5/06—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end-closing or contents-supporting elements formed by folding inwardly a wall extending from, and continuously around, an end of the tubular body
- B65D5/067—Gable-top containers
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- B32B2307/00—Properties of the layers or laminate
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- B32B2307/00—Properties of the layers or laminate
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- B32B2307/7244—Oxygen barrier
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2377/00—Polyamides
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
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- Y10T428/1324—Flexible food casing [e.g., sausage type, etc.]
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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
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- Y10T428/1341—Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
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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
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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
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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
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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
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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
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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
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- Y10T428/31913—Monoolefin polymer
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Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
Description
HS/PB/EVOH1/EVOH2/EVOH1/EVOH2/結合層/HS、
ここで、HS(heat−sealable)とはヒートシール可能な層をいい、PB(紙、板紙)とは基材層をいい、結合層とはバインダーをいう。省略形EVOH1及びEVOH2とは、エチレンモノマー含量が互いに異なる(例えば、表1に従う組み合わせである)自由に選択された二種のエチレンビニル共重合体をいう。
試験において、包装用材料の試料は、空気の湿度の、酸素透過速度(O2TR)に対する影響を評価するため、異なる相対湿度条件で保存された。試料には、厚さが異なる32モル%EVOHの層を備えるEnsobarr社の厚紙試料と、図10及び図11の構造に対応する、異なる層における32モル%のEVOH及び44モル%のEVOHを備える同社の厚紙試料とが含まれていた。Ensobarrは、以下のサンドウィッチ構造:PE/板紙/EVOH/結合層/PEを有する市販の包装用材料であり、ここでPEはポリエチレンであり、板紙は基材層であり、結合層は、バインダー層である。(23℃の温度かつ50%の相対湿度での)開始時の試料の基材重量、EVOH層の厚さ、エチレンモノマー含量及び酸素透過性を、表1に示す。
実施例1の試験に対応した測定を23℃の温度かつ85%の相対湿度で実行した。これらの条件では、最も薄い32モル%のEVOH層を有する試料1では、数週間の保存の後にすでにこの値を越えていた。より厚い層と同一のポリマーを含有する試料は、4週間の保存の間、この限界値未満の酸素透過性を維持したが、この値は、8週間の保存の後、より大きくなった。その代わりに、本発明の試料3は、4〜7週の保存の間、酸素バリアー性に優れた材料としての等級を維持した。結果を、表3に示す。
包装用材料の熱帯性条件での耐久性を評価するために、相対湿度を90%にまで、温度を38℃にまで上昇させた。このような条件では、全ての試料は、1週間の保存後にその特性を失った。本発明の試料の酸素透過性が、10cm3/m2/日未満だけ標的値に不足したとはいえ、本発明の試料の酸素透過性は、先行技術の試料の酸素透過性の半分であった。デバイスの検出精度を超えたので、これらの結果は示さない。
本発明の包装用材料は、押し出しによって板紙と板紙の表面のポリマー層とをサンドウィッチすることにより製造された。その構造を図11に示す。ここで、サンドウィッチ構造を横断する方向のクロスカットは、実施形態における層の配置及びいくつかの層の厚さを示している。クロスカットの構造は、最も外側のヒートシール可能な層12が基材層11に結合されていないことを除き、図10で概略的に示したものと同様である。層の配置及び構造から測定される層の厚さは、以下の通りである。すなわち、板紙(特定されず)、EVOH44%(4μm)、EVOH32%(7μM)、バインダー(4μm)、ポリエチレン(約40μm)。ガスバリアー特性に対して有利な効果を有する2つのEVOH層間の界面は、図中に見ることもできる。
1b エチレンモノマー含量がより少ないEVOH層
1c エチレンモノマー含量が特に少ないEVOH層
11 基材層、繊維状で、一般的に板紙製
12 ヒートシール可能な層
12a パッケージの最も内側のヒートシール可能な層、ポリプロピレン(PP)製
12b ポリプロピレン(PP)でできた、着色されたヒートシール可能な層
12c パッケージの最も外側のヒートシール可能な層、ポリプロピレン(PP)製
13 結合層
14 色素を有するヒートシール可能な層
14a ポリプロピレン(PP)の、着色した黒色又は灰色のヒートシール可能な層
15 ポリアミド層(PA)
Claims (11)
- 繊維性材料の基材層、酸素バリアーを形成するポリマー層、及び少なくとも一層のポリマーヒートシール可能層を有する、ポリマー被覆されたヒートシール可能な包装用材料であって、
前記酸素バリアーを提供するために、エチレンモノマー含量の異なるエチレンビニルアルコール共重合体(EVOH)の層を少なくとも2層有し、
前記EVOH層のそれぞれが、3〜10g/m 2 の重量を有し、
前記EVOH層が、間に結合層なしに、互いに直接配置され、
前記EVOH層が、繊維性材料の基材層に直接配置されていることを特徴とする包装用材料。 - 前記包装材料の少なくとも片側では、最外層のポリマーヒートシール可能層を有することを特徴とする、請求項1に記載の包装用材料。
- 前記包装材料の両側で、最外層のポリマーヒートシール可能層を有することを特徴とする、請求項1又は2に記載の包装用材料。
- 前記エチレンモノマーの割合がより少ないEVOH層が、32モル%以下のエチレンモノマーを含有することを特徴とする、請求項1〜3のいずれか1項に記載の包装用材料。
- 前記エチレンモノマーの割合がより高いEVOH層が、32モル%以上のエチレンモノマーを含有することを特徴とする、請求項1〜4のいずれか1項に記載の包装用材料。
- 前記エチレンモノマーの割合がより高いEVOH層が、35から48モル%のエチレンモノマーを含有することを特徴とする、請求項5に記載の包装用材料。
- 互いに直接配置された少なくとも3つのEVOH層を有し、エチレンモノマー含量の異なるEVOH層間で少なくとも2つの界面が形成されている、請求項1〜6のいずれか1項に記載の包装用材料。
- 請求項1〜7のいずれか1項に記載の包装用材料から形成された封止パッケージであって、
繊維性材料の基材層と、前記繊維性材料の基材層の内側で、少なくとも2層のエチレンモノマーの割合が異なるエチレンビニルアルコール共重合体(EVOH)の層と、最も内側のポリマーヒートシール可能層とを有することを特徴とする、封止パッケージ。 - 前記封止パッケージの少なくとも片側で、最外層のポリマーヒートシール可能層を有することを特徴とする、請求項8に記載のパッケージ。
- ポリマー被覆された包装用板紙でできたパッケージ容器又はカートンであることを特徴とする、請求項8又は9に記載のパッケージ。
- 酸素気密に封止された食品パッケージであることを特徴とする、請求項8〜10のいずれか1項に記載のパッケージ。
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FI20060701A FI20060701A (fi) | 2006-07-27 | 2006-07-27 | Polymeeripinnoitteinen kuumasaumautuva pakkausmateriaali sekä siitä muodostettu suljettu tuotepakkaus |
FI20060701 | 2006-07-27 | ||
PCT/FI2007/000195 WO2008012397A1 (en) | 2006-07-27 | 2007-07-26 | Polymer-coated heat-sealable packaging material and a sealed package manufactured thereof |
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CA (1) | CA2659377C (ja) |
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WO (2) | WO2008012396A1 (ja) |
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US9610755B2 (en) | 2010-01-19 | 2017-04-04 | Prolamina Midwest Corporation | Packaging and method of making packaging |
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EP2049412A4 (en) | 2011-04-27 |
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EP2049412B1 (en) | 2012-05-30 |
US20090324861A1 (en) | 2009-12-31 |
ES2389014T3 (es) | 2012-10-22 |
US8178180B2 (en) | 2012-05-15 |
FI20060701A0 (fi) | 2006-07-27 |
JP2009544495A (ja) | 2009-12-17 |
FI20060701A (fi) | 2008-01-28 |
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WO2008012397A1 (en) | 2008-01-31 |
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