JP2003127298A - Polyolefin film for packaging and packaged item - Google Patents
Polyolefin film for packaging and packaged itemInfo
- Publication number
- JP2003127298A JP2003127298A JP2001250398A JP2001250398A JP2003127298A JP 2003127298 A JP2003127298 A JP 2003127298A JP 2001250398 A JP2001250398 A JP 2001250398A JP 2001250398 A JP2001250398 A JP 2001250398A JP 2003127298 A JP2003127298 A JP 2003127298A
- Authority
- JP
- Japan
- Prior art keywords
- packaging
- film
- layer
- heat
- polyolefin 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.)
- Granted
Links
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 43
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 38
- 229920001155 polypropylene Polymers 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 21
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000005977 Ethylene Substances 0.000 claims abstract description 19
- 235000008429 bread Nutrition 0.000 claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 64
- 239000012793 heat-sealing layer Substances 0.000 claims description 20
- 229920005604 random copolymer Polymers 0.000 claims description 14
- 230000004927 fusion Effects 0.000 claims description 11
- 239000004711 α-olefin Substances 0.000 claims description 11
- 239000003054 catalyst Substances 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 238000007789 sealing Methods 0.000 abstract description 12
- 239000004743 Polypropylene Substances 0.000 abstract description 9
- -1 polypropylene Polymers 0.000 abstract description 8
- 229920000642 polymer Polymers 0.000 abstract description 6
- 239000012943 hotmelt Substances 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 description 15
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 11
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 229920001384 propylene homopolymer Polymers 0.000 description 9
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 8
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 8
- 229920001577 copolymer Polymers 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 6
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 229920001519 homopolymer Polymers 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 235000009508 confectionery Nutrition 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- AFFLGGQVNFXPEV-UHFFFAOYSA-N n-decene Natural products CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 3
- 229920006280 packaging film Polymers 0.000 description 3
- 239000012785 packaging film Substances 0.000 description 3
- 101100160821 Bacillus subtilis (strain 168) yxdJ gene Proteins 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 102100033040 Carbonic anhydrase 12 Human genes 0.000 description 1
- 102100033029 Carbonic anhydrase-related protein 11 Human genes 0.000 description 1
- 101000867855 Homo sapiens Carbonic anhydrase 12 Proteins 0.000 description 1
- 101000867841 Homo sapiens Carbonic anhydrase-related protein 11 Proteins 0.000 description 1
- 101001075218 Homo sapiens Gastrokine-1 Proteins 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- HEAMQYHBJQWOSS-UHFFFAOYSA-N ethene;oct-1-ene Chemical compound C=C.CCCCCCC=C HEAMQYHBJQWOSS-UHFFFAOYSA-N 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Landscapes
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
- Packages (AREA)
- Wrappers (AREA)
- Packaging Frangible Articles (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高温でのヒ−トシ
−ルでも易開封性に優れた包装用、中でもパン包装用に
好適な包装用ポリオレフィンフィルム及びそれを用いた
包装体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyolefin film for packaging which is excellent in easy-opening property even in heat seal at high temperature, and particularly suitable for bread packaging, and a package using the same.
【０００２】[0002]
【従来の技術】ポリエチレン、エチレン・酢酸ビニル共
重合体あるいはプロピレン・α−オレフィンランダム共
重合体等の熱融着層を備えた無延伸ポリプロピレンの単
層若しくは多層フィルムは、透明性、光沢性、剛性等に
優れ、且つ低温ヒートシール性、易剥離性を有している
ので、パンのピロー包装用を始め、菓子類、日用雑貨品
等の包装用フィルムとして広く用いられている。2. Description of the Related Art A single-layer or multi-layer film of unstretched polypropylene having a heat-sealing layer such as polyethylene, ethylene / vinyl acetate copolymer or propylene / α-olefin random copolymer has excellent transparency, gloss, Since it has excellent rigidity and low-temperature heat-sealing property and easy peeling property, it is widely used as a packaging film for bread pillow packaging, confectionery, daily sundries and the like.
【０００３】しかしながら、かかる包装用フィルムは低
温でのヒートシール性及び易剥離性を有するものの、高
温でヒートシールした場合は、シール強度（剥離強度）
が高くなり、開封時包装が綺麗に開かない、或いは包装
が破け、被包装物が飛散る虞がある。However, although such a packaging film has heat sealability at low temperature and easy peeling property, when heat-sealed at high temperature, the sealing strength (peeling strength).
When the package is opened, the package may not be opened neatly, or the package may be broken and the packaged object may be scattered.
【０００４】[0004]
【発明が解決しようとする課題】そこで本発明は、高温
時でも易開封性に優れた、特にパン包装用に好適な包装
用ポリオレフィンフィルムを得ることを目的とした。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to obtain a polyolefin film for packaging which is excellent in easy-opening property even at a high temperature and is particularly suitable for bread packaging.
【０００５】[0005]
【発明の概要】すなわち本発明は、融点が１５８℃以上
のプロピレン重合体（Ａ）２０〜８０重量％と密度が
０．８６０〜０．９３０ｇ／ｃｍ３のエチレン系重合体
（Ｂ）８０〜２０重量％とのプロピレン重合体組成物か
ら得られうる熱融着層を備えていることを特徴とする包
装用ポリオレフィンフィルム及び当該包装用ポリオレフ
ィンフィルムにパンが封入され、ポリオレフィンフィル
ムを熱融着してなるパン包装体に関する。SUMMARY OF THE INVENTION That is, the present invention relates to a propylene polymer (A) having a melting point of 158 ° C. or higher of 20 to 80% by weight and a density of 0.860 to 0.930 g / cm 3 of an ethylene polymer (B) of 80 to A packaging polyolefin film comprising a heat-sealing layer obtainable from 20% by weight of a propylene polymer composition, and a bread is enclosed in the packaging polyolefin film, and the polyolefin film is heat-sealed. The present invention relates to a bread package.
【０００６】[0006]
【発明の具体的説明】プロピレン重合体（Ａ）
本発明に係わるプロピレン重合体（Ａ）は、融点が１５
８℃以上、好ましくは１６０℃以上である。かかる範囲
にあるプロピレン重合体（Ａ）は、通常プロピレンの単
独重合体、若しくはプロピレンと他の少量、例えば１重
量％以下のエチレン、１−ブテン、１−ヘキセン、４−
メチル−１−ペンテン、１−オクテン等の炭素数が２〜
１０のα−オレフィンとの共重合体である。これらの中
でも、プロピレン単独重合体が、高温でヒートシールし
た場合の易開封性、耐ブロッキング性のバランスに優れ
るので好ましい。DETAILED DESCRIPTION OF THE INVENTION Propylene Polymer (A) The propylene polymer (A) according to the present invention has a melting point of 15
The temperature is 8 ° C or higher, preferably 160 ° C or higher. The propylene polymer (A) in such a range is usually a homopolymer of propylene or a small amount of propylene and other small amount, for example, 1% by weight or less of ethylene, 1-butene, 1-hexene, 4-
Methyl-1-pentene, 1-octene, etc. have 2 to 12 carbon atoms
It is a copolymer with 10 α-olefins. Among these, a propylene homopolymer is preferable because it has an excellent balance of easy-opening property and blocking resistance when heat-sealed at a high temperature.
【０００７】又、かかるプロピレン重合体（Ａ）のメル
トフローレート（ＡＳＴＭ Ｄ １２３８、温度２３０
℃、荷重２１６０ｇ：ＭＦＲ―ＰＰ）は、フィルムとし
て使用できる範囲であれば特に制限はされないが、通
常、１〜２０ｇ／１０分、好ましくは２〜１０ｇ／１０
分の範囲にある。The melt flow rate of the propylene polymer (A) (ASTM D 1238, temperature 230
C, load 2160 g: MFR-PP) is not particularly limited as long as it can be used as a film, but is usually 1 to 20 g / 10 minutes, preferably 2 to 10 g / 10.
It is in the range of minutes.
【０００８】エチレン系重合体（Ｂ）
本発明に係わるエチレン系重合体（Ｂ）は、密度が０．
８６０〜０．９３０ｇ／ｃｍ３、好ましくは０．８６５
〜０．９１５ｇ／ｃｍ３の範囲にあるエチレンの単独重
合体あるいはエチレンと０．５〜２０モル％のプロピレ
ン、１−ブテン、１−ヘキセン、４−メチル−１−ペン
テン、１−オクテン、１−デセン等の炭素数が３〜１０
のα−オレフィンとのランダム共重合体である。密度が
０．８６０ｇ／ｃｍ３未満のものは、プロピレン重合体
（Ａ）と混合して熱融着層として用いた際にヒートシー
ル強度が低下する虞があり、一方、密度が０．９３０ｇ
／ｃｍ３を越えるものは、プロピレン重合体（Ａ）と混
合して熱融着層として用いた際に、易剥離性を有する包
装体が得られない虞がある。 Ethylene Polymer (B) The ethylene polymer (B) according to the present invention has a density of 0.
860 to 0.930 g / cm 3 , preferably 0.865
Homopolymer of ethylene in the range of 0.915 g / cm 3 or 0.5 to 20 mol% of ethylene and propylene, 1-butene, 1-hexene, 4-methyl-1-pentene, 1-octene, 1 -The carbon number of decene etc. is 3-10
Is a random copolymer with α-olefin. When the density is less than 0.860 g / cm 3 , the heat-sealing strength may decrease when used as a heat-sealing layer by mixing with the propylene polymer (A), while the density is 0.930 g.
If it exceeds / cm 3 , there is a possibility that a package having easy peeling property cannot be obtained when it is mixed with the propylene polymer (A) and used as a heat-sealing layer.
【０００９】これらの中では、エチレンと炭素数４以上
のα―オレフィンとのランダム共重合体、中でもシング
ルサイト触媒等を用いて得られるランダム共重合体が好
ましい。又、かかるエチレン・α−オレフィンランダム
共重合体は、通常、その融点が４０〜１３０℃、好まし
くは６０〜１２５℃、分子量分布（重量平均分子量：Ｍ
ｗと数平均分子量：Ｍｎとの比：Ｍｗ／Ｍｎで表示）が
通常１．５〜４．０、好ましくは１．８〜３．５、Ｘ線
による結晶化度が３〜６０％、好ましくは５〜５０％の
範囲にある。又、本発明に係わるエチレン系重合体
（Ｂ）のメルトフローレート（ＡＳＴＭ Ｄ１２３８
温度１９０℃、荷重２１６０ｇ：ＭＦＲ―ＰＥ）は、フ
ィルムとして使用できる範囲であれば特に制限はされな
いが、通常１〜１０ｇ／１０分、好ましくは２〜６ｇ／
１０分の範囲にある。上記のようなエチレン・α−オレ
フィンランダム共重合体は、チーグラー触媒、シングル
サイト触媒等を用いた従来公知の製造法により調整する
ことができる。たとえばエチレン・α−オレフィンラン
ダム共重合体は、遷移金属のメタロセン化合物を含む触
媒を用いて調整することができる。このメタロセン化合
物を含む触媒は、（ａ）遷移金属のメタロセン化合物
と、（ｂ）有機アルミニウムオキシ化合物と、（ｃ）担
体とから形成されることが好ましく、さらに必要に応じ
て、これらの成分と（ｄ）有機アルミニウム化合物およ
び／または有機ホウ素化合物とから形成さていてもよ
い。なお、このようなメタロセン化合物を含むオレフィ
ン重合用触媒、および触媒を用いたエチレン・α−オレ
フィンランダム共重合体の調整方法は、たとえば特開平
８−２６９２７０号公報に記載されている。Among these, a random copolymer of ethylene and an α-olefin having 4 or more carbon atoms, particularly a random copolymer obtained by using a single site catalyst or the like is preferable. The ethylene / α-olefin random copolymer generally has a melting point of 40 to 130 ° C, preferably 60 to 125 ° C, and a molecular weight distribution (weight average molecular weight: M
ratio of w to number average molecular weight: Mn: Mw / Mn) is usually 1.5 to 4.0, preferably 1.8 to 3.5, and crystallinity by X-ray is 3 to 60%, preferably Is in the range of 5 to 50%. Further, the melt flow rate of the ethylene polymer (B) according to the present invention (ASTM D1238
Temperature 190 ° C., load 2160 g: MFR-PE) is not particularly limited as long as it can be used as a film, but is usually 1 to 10 g / 10 minutes, preferably 2 to 6 g /
It is in the range of 10 minutes. The ethylene / α-olefin random copolymer as described above can be prepared by a conventionally known production method using a Ziegler catalyst, a single-site catalyst or the like. For example, an ethylene / α-olefin random copolymer can be prepared using a catalyst containing a transition metal metallocene compound. The catalyst containing this metallocene compound is preferably formed from (a) a metallocene compound of a transition metal, (b) an organoaluminum oxy compound, and (c) a carrier, and further, if necessary, with these components. (D) It may be formed from an organic aluminum compound and / or an organic boron compound. An olefin polymerization catalyst containing such a metallocene compound and a method for preparing an ethylene / α-olefin random copolymer using the catalyst are described in, for example, JP-A-8-269270.
【００１０】プロピレン系重合体（Ｃ）
本発明に係わるプロピレン系重合体（Ｃ）は、プロピレ
ンの単独重合体あるいは、プロピレンとエチレン、１―
ブテン、１−ヘキセン、４−メチルー１−ペンテン、１
−オクテン、１−デセン等の炭素数２〜１０のα―オレ
フィンとのプロピレンを主成分とするランダム若しくは
ブロック共重合体である。共重合体の場合は、通常プロ
ピレン含有量が５０重量％以上、好ましくは６０重量％
以上の共重合体である。単独重合体か共重合体を用いる
かは、要求される外観によって適宜選択でき、例えば、
透明な包装用ポリオレフィンフィルムを得るには、単独
重合体あるいはランダム共重合体を選択し、不透明な包
装用ポリオレフィンフィルムを得るにはブロック共重合
体を夫々選択すれば良い。 Propylene Polymer (C) The propylene polymer (C) according to the present invention is a homopolymer of propylene or propylene and ethylene, 1-
Butene, 1-hexene, 4-methyl-1-pentene, 1
A random or block copolymer containing propylene as a main component and an α-olefin having 2 to 10 carbon atoms such as octene or 1-decene. In the case of a copolymer, the propylene content is usually 50% by weight or more, preferably 60% by weight.
It is the above copolymer. Whether to use a homopolymer or a copolymer can be appropriately selected depending on the required appearance.
A homopolymer or a random copolymer may be selected to obtain a transparent packaging polyolefin film, and a block copolymer may be selected to obtain an opaque packaging polyolefin film.
【００１１】かかるプロピレン系重合体（Ｃ）のＭＦＲ
―ＰＰは、フィルムとして使用できる範囲であれば特に
制限はされないが、通常、０．５〜２０ｇ／１０分、好
ましくは１〜１０ｇ／１０分の範囲にある。MFR of the propylene polymer (C)
-PP is not particularly limited as long as it can be used as a film, but is usually in the range of 0.5 to 20 g / 10 minutes, preferably 1 to 10 g / 10 minutes.
【００１２】プロピレン重合体組成物
本発明に係るプロピレン重合体組成物は、前記プロピレ
ン重合体（Ａ）が２０〜８０重量％、好ましくは２５〜
７０重量％及び前記エチレン系重合体（Ｂ）が８０〜２
０重量％、好ましくは７５〜３０重量％の範囲にある。
プロピレン重合体（Ａ）が２０重量％未満では得られる
フィルムの剛性、滑性、耐ブロッキング性に劣る虞があ
り、又、熱融着層として用いた場合には、易開封性が得
られるヒートシール温度幅が狭くなるとともに高温での
ヒートシール強度が強くなり易開封性に劣る虞がある。
一方、８０重量％を超えると易開封性が得られるヒート
シール温度幅が狭くなるとともに高温でのヒートシール
強度が強くなり易開封性に劣る虞がある。 Propylene Polymer Composition The propylene polymer composition according to the present invention contains 20 to 80% by weight, preferably 25 to 80% by weight of the propylene polymer (A).
70% by weight and 80 to 2 of the ethylene polymer (B)
It is in the range of 0% by weight, preferably 75 to 30% by weight.
If the propylene polymer (A) is less than 20% by weight, the resulting film may be inferior in rigidity, slipperiness, and blocking resistance, and when used as a heat-sealing layer, a heat that can be easily opened is obtained. As the sealing temperature width becomes narrower, the heat-sealing strength at high temperature becomes stronger, which may deteriorate the easy-open property.
On the other hand, if the amount exceeds 80% by weight, the heat-seal temperature range in which the easy-open property is obtained becomes narrow, and the heat-sealing strength at high temperature becomes strong, which may deteriorate the easy-open property.
【００１３】本発明に係わるプロピレン重合体（Ａ）、
エチレン系重合体（Ｂ）あるいはその組成物及びプロピ
レン系重合体（Ｃ）には、本発明の目的を損なわない範
囲で、通常用いられる酸化防止剤、耐候安定剤、帯電防
止剤、防曇剤等の添加剤を必要に応じて配合することが
できる。特に、アンチブロッキング剤、スリップ剤を配
合することによって、フィルム成形時、ラミネート加工
時、包装作業時等における加工性や作業性を向上させる
ことができる。A propylene polymer (A) according to the present invention,
The ethylene-based polymer (B) or its composition and the propylene-based polymer (C) are usually used in the range not impairing the object of the present invention, such as an antioxidant, a weather resistance stabilizer, an antistatic agent, and an antifogging agent. Additives such as can be blended as necessary. In particular, by adding an anti-blocking agent and a slip agent, it is possible to improve the workability and workability during film forming, laminating, packaging, and the like.
【００１４】包装用ポリオレフィンフィルム
本発明の包装用ポリオレフィンフィルムは、前記プロピ
レン重合体組成物から得られうる熱融着層を備えてな
る。かかる熱融着層は、ヒートシール部の収縮を防ぐた
めに通常延伸はされない、即ち無延伸フィルムであるこ
とが好ましい。 Polyolefin Film for Packaging The polyolefin film for packaging of the present invention comprises a heat-sealing layer obtainable from the propylene polymer composition. In order to prevent the heat-sealed portion from shrinking, the heat-sealing layer is usually not stretched, that is, it is preferably a non-stretched film.
【００１５】本発明の包装用ポリオレフィンフィルム
は、前記プロピレン重合体組成物から得られうる熱融着
層のみから構成されていても良いし、前記プロピレン系
重合体（Ｃ）からなるフィルム層との積層フィルムであ
っても良い。又、本発明の包装用ポリオレフィンフィル
ムには、更に他の基材層と積層して用いても良い。かか
る基材層としては、通常包装材料として使用されている
種々材料、例えば、ポリエチレンフィルム、ポリブテン
フィルム及びポリメチルペンテンフィルム等のポリオレ
フィンフィルム、ポリエチレンテレフタレートフィルム
及びポリカーボネートフィルム等のポリエステルフィル
ム、ナイロンフィルム、ポリスチレンフィルム、ポリ塩
化ビニルフィルム、ポリ塩化ビニリデンフィルム、ポリ
ビニルアルコールフィルム、エチレン・ビニルアルコー
ル共重合体フィルム、ポリメチルメタクリレートフィル
ム、エチレン・酢酸ビニル共重合体フィルム等の熱可塑
性樹脂製フィルム、アルミニューム箔、紙等が挙げられ
る。かかる熱可塑性樹脂製フィルムからなる基材は無延
伸であっても一軸あるいは二軸延伸フィルムであっても
良い。勿論、基材は一層でも二層以上としても良い。The packaging polyolefin film of the present invention may be composed of only a heat-sealing layer obtainable from the propylene polymer composition, or a film layer composed of the propylene polymer (C). It may be a laminated film. Further, the packaging polyolefin film of the present invention may be used by being laminated with another base material layer. As the base material layer, various materials usually used as packaging materials, for example, polyolefin films such as polyethylene film, polybutene film and polymethylpentene film, polyester films such as polyethylene terephthalate film and polycarbonate film, nylon film, polystyrene. Film, thermoplastic resin film such as polyvinyl chloride film, polyvinylidene chloride film, polyvinyl alcohol film, ethylene / vinyl alcohol copolymer film, polymethylmethacrylate film, ethylene / vinyl acetate copolymer film, aluminum foil, Examples include paper. The substrate made of such a thermoplastic resin film may be unstretched or uniaxially or biaxially stretched film. Of course, the base material may be one layer or two or more layers.
【００１６】本発明の包装用ポリオレフィンフィルムの
厚さは、被包装材料によって種々決定されるが、通常２
０〜１００μｍ、好ましくは２０〜４０μｍの範囲にあ
る。又、プロピレン系重合体（Ｃ）からなるフィルム層
（補強層）との積層フィルムとする場合は、通常、熱融
着層及び補強層の厚さは、通常夫々２〜２０μｍ、１３
〜８０μｍ、好ましくは２〜１０μｍ、１３〜３０μｍ
の範囲にある。又、補強層を二層にして、中間層を設け
る場合は、夫々２〜２０μｍ、１０〜９６μｍ及び２〜
２０μｍ、好ましくは２〜１０μｍ、１０〜３６μｍ及
び２〜１０μｍの範囲にある。Although the thickness of the polyolefin film for packaging of the present invention is variously determined depending on the material to be packaged, it is usually 2
It is in the range of 0 to 100 μm, preferably 20 to 40 μm. When a laminated film with a film layer (reinforcing layer) made of a propylene-based polymer (C) is used, the thickness of the heat fusion layer and that of the reinforcing layer are usually 2 to 20 μm and 13 respectively.
-80 μm, preferably 2-10 μm, 13-30 μm
Is in the range. When two reinforcing layers are provided and an intermediate layer is provided, they are 2 to 20 μm, 10 to 96 μm, and 2 respectively.
It is in the range of 20 μm, preferably 2 to 10 μm, 10 to 36 μm and 2 to 10 μm.
【００１７】本発明の包装用ポリオレフィンフィルムは
種々公知の方法で製造できる。例えば、熱融着層のみか
らなる単層フィルムを得る場合は、通常のインフレーシ
ョンフィルム成形法、Ｔ−ダイフィルム成形法を採用す
れば良いし、補強層及び／又は基材層との積層フィルム
を得る場合には、予め熱融着層、補強層及び基材層、必
要に応じて中間層となるフィルムを別個に成形した後、
貼り合わせる方法、複数の押出機で各層を形成する重合
体を個別に溶融して一つのダイから積層フィルムとす
る、所謂共押出成形法により、製造できる。中でも、共
押出成形法が、積層フィルムを容易に成形でき、且つ得
られる積層フィルムも層間接着性に優れるので好まし
い。本発明の包装用ポリオレフィンフィルムは用途に応
じて、直接あるいは基材層の表面に一般的な包装用グラ
ビアインキで印刷しても良い。The polyolefin film for packaging of the present invention can be produced by various known methods. For example, in the case of obtaining a single-layer film consisting of only a heat-sealing layer, an ordinary inflation film molding method or T-die film molding method may be adopted, and a laminated film with a reinforcing layer and / or a base material layer may be used. In the case of obtaining a heat fusion layer, a reinforcing layer and a base material layer in advance, after separately molding a film to be an intermediate layer, if necessary,
It can be produced by a laminating method or a so-called coextrusion molding method in which a polymer forming each layer is melted individually by a plurality of extruders to form a laminated film from one die. Among them, the coextrusion molding method is preferable because the laminated film can be easily molded and the obtained laminated film also has excellent interlayer adhesion. The polyolefin film for packaging of the present invention may be printed directly or on the surface of the substrate layer with a general gravure ink for packaging, depending on the application.
【００１８】パン包装体
本発明のパン包装体は、前記プロピレン重合体組成物か
らなる熱融着層を有するフィルムあるいはプロピレン系
重合体（Ｃ）からなるフィルム層からなる補強層を備え
た積層フィルムからなる包装用ポリオレフィンフィルム
にパンが封入され、包装用ポリオレフィンフィルムが熱
融着されてなる。被包装物であるパンを封入する方法と
しては、横ピロー包装機を採用し得る。包装体の形状
は、パンを収納できる形状であれば特に限定はされな
い。 Bread Package A bread package of the present invention is a film having a heat-sealing layer made of the propylene polymer composition or a laminated film having a reinforcing layer made of a film layer made of the propylene polymer (C). Bread is enclosed in a polyolefin film for packaging consisting of and the polyolefin film for packaging is heat-sealed. A horizontal pillow packaging machine can be used as a method for enclosing bread to be packaged. The shape of the package is not particularly limited as long as it can store bread.
【００１９】[0019]
【実施例】次に本発明を、実施例を通して説明するが、
本発明はそれら実施例によって限定されるものではな
い。The present invention will be described below with reference to examples.
The present invention is not limited to these examples.
【００２０】特性値は以下の方法で測定した。
（１） ヒートシール強度（Ｎ／１５ｍｍ）：熱融着層
面を重ね合せ、表記載の温度、幅５ｍｍのシールバーに
より、０．２ＭＰａの圧力で０．３秒間シールした後放
冷した。これから１５ｍｍ幅の試験片を切り取りクロス
ヘッド速度５００ｍｍ／ｍｉｎでヒートシール部を剥離
し、その強度をヒートシール強度とした。ヒートシール
性の評価は、エッジ切れせずに剥離し且つ適度な強度範
囲である２．０〜１０Ｎ／１５ｍｍ未満を示すものを
○、剥離はするが強度不足のものを△、剥離せずエッジ
切れするものを×、熱融着しないものを−とした。The characteristic values were measured by the following methods. (1) Heat-sealing strength (N / 15 mm): The surfaces of the heat-sealing layers were superposed on each other, sealed with a seal bar having a width of 5 mm and a pressure of 0.2 MPa for 0.3 seconds, and then allowed to cool. A test piece with a width of 15 mm was cut from this, and the heat-sealed portion was peeled off at a crosshead speed of 500 mm / min, and the strength was taken as the heat-sealing strength. The heat-sealability was evaluated by ◯ when peeled without edge breakage and showing an appropriate strength range of less than 2.0 to 10 N / 15 mm, ◯, when peeled but insufficient strength was Δ, and when edge was not peeled The thing which cut | disconnected was set to x, and the thing which is not heat-sealed was set to-.
【００２１】本実施例及び比較例で使用した原料は次の
通りである。
（１）プロピレン単独重合体（ＰＰ）
融点：１６３℃、ＭＦＲ―ＰＰ：７ｇ／１０分
（２）プロピレン・α−オレフィンランダム共重合体
（Ｒ−ＰＰ）
エチレン含有量：２．７重量％、ブテンー１含有量：
１．５重量％、融点１３８℃、ＭＦＲ７ｇ／１０分
（３）エチレン・１−オクテンランダム共重合体（シン
グルサイト触媒重合：ＰＥ−１)
密度：０．８７０ｇ／ｃｍ３、融点：６６℃、結晶化
度：８％、エチレン含有量：８５．６モル％、ＭＦＲ―
ＰＥ：４．０ｇ／１０分
（４）エチレン・１―ヘキセンランダム共重合体（シン
グルサイト触媒重合直鎖状低密度ポリエチレン：ＰＥ−
２）
密度：０．９０３ｇ／ｃｍ３、融点：９６℃、結晶化
度：４０％、エチレン含有量：９４．１モル％、ＭＦ
Ｒ：４．０ｇ／１０分The raw materials used in the examples and comparative examples are as follows. (1) Propylene homopolymer (PP) Melting point: 163 ° C., MFR-PP: 7 g / 10 min (2) Propylene / α-olefin random copolymer (R-PP) Ethylene content: 2.7% by weight, Butene-1 content:
1.5% by weight, melting point 138 ° C., MFR 7 g / 10 min (3) ethylene / 1-octene random copolymer (single-site catalyst polymerization: PE-1) density: 0.870 g / cm 3 , melting point: 66 ° C. Crystallinity: 8%, ethylene content: 85.6 mol%, MFR-
PE: 4.0 g / 10 min (4) Ethylene / 1-hexene random copolymer (single-site catalytic polymerization linear low-density polyethylene: PE-
2) Density: 0.903 g / cm 3 , melting point: 96 ° C., crystallinity: 40%, ethylene content: 94.1 mol%, MF
R: 4.0 g / 10 minutes
【００２２】実施例１
ＰＰ：７２重量％とＰＥ−１：２８重量％とを混合した
ポリオレフィン組成物からなる熱融着層と、ＰＰ：１０
０重量％を中間層並びに補強層に用いて、別々の押出機
に供給し、Ｔダイ法によって熱融着層／中間層／補強層
からなる構成の３層共押出フイルムを得た。フィルムの
総厚は３０μｍで、各層の厚みは熱融着層：中間層：補
強層＝４．５μｍ：２１μｍ：４．５μｍであった。 EXAMPLE 1 PP: 72% by weight and PE-1: 28% by weight, a heat-sealing layer made of a polyolefin composition, and PP: 10.
Using 0% by weight as the intermediate layer and the reinforcing layer, the mixture was supplied to separate extruders, and a three-layer coextrusion film having a structure of a heat fusion layer / intermediate layer / reinforcing layer was obtained by the T-die method. The total thickness of the film was 30 μm, and the thickness of each layer was thermal fusion layer: intermediate layer: reinforcing layer = 4.5 μm: 21 μm: 4.5 μm.
【００２３】実施例２
実施例１で用いた熱融着層を形成するポリオレフィン組
成物を、ＰＰ：６２重量％とＰＥ−１：３８重量％とを
ドライブレンドしたポリオレフィン組成物に代える以外
は実施例１と同様に行い、３層共押出フイルムを得た。
フィルムの総厚は３０μｍで、各層の厚みは熱融着層：
中間層：補強層＝４．５μｍ：２１μｍ：４．５μｍで
あった。 Example 2 Except that the polyolefin composition for forming the heat-sealing layer used in Example 1 was replaced with a polyolefin composition in which PP: 62% by weight and PE-1: 38% by weight were dry blended. A three-layer coextrusion film was obtained in the same manner as in Example 1.
The total thickness of the film is 30 μm, and the thickness of each layer is the heat fusion layer:
Intermediate layer: Reinforcing layer = 4.5 μm: 21 μm: 4.5 μm.
【００２４】実施例３
実施例１で用いた熱融着層を形成するポリオレフィン組
成物を、ＰＰ：５０重量％とＰＥ−２：５０重量％とを
ドライブレンドしたポリオレフィン組成物に代える以外
は実施例１と同様に行い、３層共押出フイルムを得た。
フィルムの総厚は３０μｍで、各層の厚みは熱融着層：
中間層：補強層＝４．５μｍ：２１μｍ：４．５μｍで
あった。 Example 3 Example 3 was repeated except that the polyolefin composition for forming the heat-sealing layer used in Example 1 was replaced with a polyolefin composition in which PP: 50% by weight and PE-2: 50% by weight were dry blended. A three-layer coextrusion film was obtained in the same manner as in Example 1.
The total thickness of the film is 30 μm, and the thickness of each layer is the heat fusion layer:
Intermediate layer: Reinforcing layer = 4.5 μm: 21 μm: 4.5 μm.
【００２５】実施例４
実施例１で用いた熱融着層を形成するポリオレフィン組
成物を、ＰＰ：４０重量％とＰＥ−２：６０重量％とを
ドライブレンドしたポリオレフィン組成物に代える以外
は実施例１と同様に行い、３層共押出フイルムを得た。
フィルムの総厚は３０μｍで、各層の厚みは熱融着層：
中間層：補強層＝４．５μｍ：２１μｍ：４．５μｍで
あった。 Example 4 Example 4 was repeated except that the polyolefin composition for forming the heat-sealing layer used in Example 1 was replaced with a polyolefin composition in which PP: 40% by weight and PE-2: 60% by weight were dry blended. A three-layer coextrusion film was obtained in the same manner as in Example 1.
The total thickness of the film is 30 μm, and the thickness of each layer is the heat fusion layer:
Intermediate layer: Reinforcing layer = 4.5 μm: 21 μm: 4.5 μm.
【００２６】比較例１
実施例１で用いた熱融着層を形成するポリオレフィン組
成物を、ＰＰ：１００重量％に代える以外は実施例１と
同様に行い、３層共押出フイルムを得た。フィルムの総
厚は３０μｍで、各層の厚みは熱融着層：中間層：補強
層＝４．５μｍ：２１μｍ：４．５μｍであった。 Comparative Example 1 A three-layer coextrusion film was obtained in the same manner as in Example 1, except that the polyolefin composition for forming the heat-sealing layer used in Example 1 was changed to 100% by weight of PP. The total thickness of the film was 30 μm, and the thickness of each layer was thermal fusion layer: intermediate layer: reinforcing layer = 4.5 μm: 21 μm: 4.5 μm.
【００２７】比較例２
実施例１で用いた熱融着層を形成するポリオレフィン組
成物を、Ｒ−ＰＰ：１００重量％に代える以外は実施例
１と同様に行い、３層共押出フイルムを得た。フィルム
の総厚は３０μｍで、各層の厚みは熱融着層：中間層：
補強層＝４．５μｍ：２１μｍ：４．５μｍであった。 Comparative Example 2 A three-layer coextruded film was obtained in the same manner as in Example 1 except that the polyolefin composition for forming the heat-sealing layer used in Example 1 was replaced with 100% by weight of R-PP. It was The total thickness of the film is 30 μm, and the thickness of each layer is a heat fusion layer: an intermediate layer:
Reinforcing layer = 4.5 μm: 21 μm: 4.5 μm.
【００２８】比較例３
実施例１で用いた熱融着層を形成するポリオレフィン組
成物を、Ｒ−ＰＰ：７２重量％とＰＥ−１：２８重量％
とのドライブレンドしたポリオレフィン組成物に代える
以外は実施例１と同様に行い、３層共押出フイルムを得
た。フィルムの総厚は３０μｍで、各層の厚みは熱融着
層：中間層：補強層＝４．５μｍ：２１μｍ：４．５μ
ｍであった。COMPARATIVE EXAMPLE 3 The polyolefin composition for forming the heat-sealing layer used in Example 1 was used in an amount of 72% by weight of R-PP and 28% by weight of PE-1.
A three-layer coextrusion film was obtained in the same manner as in Example 1 except that the polyolefin composition was dry-blended. The total thickness of the film is 30 μm, and the thickness of each layer is heat fusion layer: intermediate layer: reinforcing layer = 4.5 μm: 21 μm: 4.5 μ
It was m.
【００２９】各実施例及び比較例で得られたフィルムと
被着体とのヒートシール強度の測定結果を表１に示す。Table 1 shows the measurement results of the heat-sealing strength between the film obtained in each Example and Comparative Example and the adherend.
【００３０】[0030]
【表１】 [Table 1]
【００３１】[0031]
【発明の効果】本発明の熱融着層が特定のプロピレン重
合体（Ａ）とエチレン系重合体（Ｂ）から形成されてな
る包装用ポリオレフィンフィルムは、高温での易開封性
に優れた特徴を有しているので、例えば、二軸延伸フィ
ルムと同等の高温下でヒートシールしてもシール部が完
全にシールされることがないので、高温でのヒートシー
ルが可能である。又、かかる条件下で包装されたパン・
お菓子・日用品雑貨等の被包装物を取出す際にも、包装
袋のフィルムを破ることなく、ヒートシール部を容易に
開封できる。本発明の包装用ポリオレフィンフィルム
は、パン、お菓子等に限らずあらゆる被包装物の包装用
フィルムとして用い得るが、特に菓子パン等の軟らかい
被包装物の包装用として好適である。The polyolefin film for packaging in which the heat-sealing layer of the present invention is formed of the specific propylene polymer (A) and ethylene-based polymer (B) is excellent in easy opening at high temperature. Therefore, for example, even if heat sealing is performed at a high temperature equivalent to that of the biaxially stretched film, the seal portion is not completely sealed, and therefore heat sealing at a high temperature is possible. In addition, bread packed under these conditions
The heat-sealed portion can be easily opened without breaking the film in the packaging bag even when taking out items to be packaged such as sweets and daily necessities. The polyolefin film for packaging of the present invention can be used as a packaging film for any packaged items such as breads and sweets, and is particularly suitable for packaging soft packaged items such as sweets breads.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ６５Ｄ 85/50 Ｂ６５Ｄ 85/50 Ａ ４Ｆ１００ Ｃ０８Ｊ 5/18 ＣＥＳ Ｃ０８Ｊ 5/18 ＣＥＳ ４Ｊ００２ Ｃ０８Ｌ 23/04 Ｃ０８Ｌ 23/04 23/10 23/10 Ｆターム(参考） 3E035 AA20 BC02 CA07 3E067 AA11 AB01 BA17A BB15A BB16A BB25A CA24 EA06 EA11 3E086 AC07 BA04 BA15 BB51 CA01 3E096 BA28 CA11 CA12 EA02X EA04X EA11X FA30 4F071 AA15 AA20 AA76 AA82 AA84 AF59 AH04 BA01 BB06 BC01 4F100 AK04A AK07A AK07B AK07C AK62A AL03A AL05A BA02 BA03 BA10A BA10C BA15 EH20 GB15 GB23 JA13A JL12A JL14 4J002 BB05X BB12W BB14W GF00 GG02 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) B65D 85/50 B65D 85/50 A 4F100 C08J 5/18 CES C08J 5/18 CES 4J002 C08L 23/04 C08L 23 / 04 23/10 23/10 F-term (reference) 3E035 AA20 BC02 CA07 3E067 AA11 AB01 BA17A BB15A BB16A BB25A CA24 EA06 EA11 3E086 AC07 BA04 BA15 BB51 CA01 3E096 BA28 CA11 CA12 EA02X EA04X EA11X FA30 4F071 AA15 AA20 AA76 AA82 AA84 AF59 AH04 BA01 BB06 BC01 4F100 AK04A AK07A AK07B AK07C AK62A AL03A AL05A BA02 BA03 BA10A BA10C BA15 EH20 GB15 GB23 JA13A JL12A JL14 4J002 BB05X BB12W BB14W GF00 GG02
Claims (6)
（Ａ）２０〜８０重量％と密度が０．８６０〜０．９３
０ｇ／ｃｍ３のエチレン系重合体（Ｂ）８０〜２０重量
％とのプロピレン重合体組成物から得られうる熱融着層
を備えていることを特徴とする包装用ポリオレフィンフ
ィルム。1. A propylene polymer (A) having a melting point of 158 ° C. or higher, 20 to 80% by weight, and a density of 0.860 to 0.93.
A polyolefin film for packaging, comprising a heat-sealing layer obtainable from a propylene polymer composition containing 0 to 20% by weight of an ethylene polymer (B) of 0 g / cm 3 .
触媒等を用いて得られるエチレン・α−オレフィンラン
ダム共重合体である請求項１記載の包装用ポリオレフィ
ンフィルム。2. The packaging polyolefin film according to claim 1, wherein the ethylene polymer (B) is an ethylene / α-olefin random copolymer obtained by using a single site catalyst or the like.
と積層されてなる請求項１若しくは２記載の包装用ポリ
オレフィンフィルム。3. The packaging polyolefin film according to claim 1, wherein the heat fusion layer is laminated with a propylene polymer (C) layer.
ィルムである請求項１〜３の何れかに記載の包装用ポリ
オレフィンフィルム。4. The polyolefin film for packaging according to claim 1, wherein the polyolefin film for packaging is an unstretched film.
用である請求項１〜４の何れかに記載の包装用ポリオレ
フィンフィルム。5. The packaging polyolefin film according to claim 1, wherein the packaging polyolefin film is for bread packaging.
オレフィンフィルムにパンが封入され、ポリオレフィン
フィルムを熱融着してなるパン包装体。6. A bread package in which bread is enclosed in the packaging polyolefin film according to any one of claims 1 to 4 and the polyolefin film is heat-sealed.
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| JP2001250398A JP4870285B2 (en) | 2001-08-10 | 2001-08-21 | Polyolefin film for packaging and packaging |
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|---|---|---|---|
| JP2001243935 | 2001-08-10 | ||
| JP2001-243935 | 2001-08-10 | ||
| JP2001243935 | 2001-08-10 | ||
| JP2001250398A JP4870285B2 (en) | 2001-08-10 | 2001-08-21 | Polyolefin film for packaging and packaging |
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| JP2003127298A true JP2003127298A (en) | 2003-05-08 |
| JP4870285B2 JP4870285B2 (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001250398A Expired - Lifetime JP4870285B2 (en) | 2001-08-10 | 2001-08-21 | Polyolefin film for packaging and packaging |
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| JP (1) | JP4870285B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009057826A1 (en) * | 2007-10-31 | 2009-05-07 | Sumitomo Chemical Company, Limited | Resin composition and shaped foam article |
| JP2011011396A (en) * | 2009-06-30 | 2011-01-20 | J-Film Corp | Heat adhesive release film and packaging material |
| JP2011079307A (en) * | 2009-09-11 | 2011-04-21 | Giken Kasei Kk | Resin sheet and resin container |
| JP2022035850A (en) * | 2020-08-21 | 2022-03-04 | 東洋紡株式会社 | Film for sealant |
| JP2023153153A (en) * | 2018-07-06 | 2023-10-17 | 三井化学東セロ株式会社 | Packaging film for food product, and package for food product |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1029255A (en) * | 1996-07-12 | 1998-02-03 | Toyobo Co Ltd | Heat-sealable film for paper container and laminate using the same and paper container |
| JP2000355358A (en) * | 1999-06-10 | 2000-12-26 | Sumitomo Bakelite Co Ltd | Multilayer sheet and container |
| JP2002178463A (en) * | 2000-12-12 | 2002-06-26 | Dainippon Ink & Chem Inc | Packaging method and laminated film |
| JP2002193318A (en) * | 2000-12-21 | 2002-07-10 | Dainippon Ink & Chem Inc | Packaging method and laminated film |
-
2001
- 2001-08-21 JP JP2001250398A patent/JP4870285B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1029255A (en) * | 1996-07-12 | 1998-02-03 | Toyobo Co Ltd | Heat-sealable film for paper container and laminate using the same and paper container |
| JP2000355358A (en) * | 1999-06-10 | 2000-12-26 | Sumitomo Bakelite Co Ltd | Multilayer sheet and container |
| JP2002178463A (en) * | 2000-12-12 | 2002-06-26 | Dainippon Ink & Chem Inc | Packaging method and laminated film |
| JP2002193318A (en) * | 2000-12-21 | 2002-07-10 | Dainippon Ink & Chem Inc | Packaging method and laminated film |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009057826A1 (en) * | 2007-10-31 | 2009-05-07 | Sumitomo Chemical Company, Limited | Resin composition and shaped foam article |
| JP2009108230A (en) * | 2007-10-31 | 2009-05-21 | Sumitomo Chemical Co Ltd | RESIN COMPOSITION, FOAM MOLDED BODY AND PROCESS FOR PRODUCING THE SAME |
| JP2011011396A (en) * | 2009-06-30 | 2011-01-20 | J-Film Corp | Heat adhesive release film and packaging material |
| JP2011079307A (en) * | 2009-09-11 | 2011-04-21 | Giken Kasei Kk | Resin sheet and resin container |
| JP2023153153A (en) * | 2018-07-06 | 2023-10-17 | 三井化学東セロ株式会社 | Packaging film for food product, and package for food product |
| JP7480401B2 (en) | 2018-07-06 | 2024-05-09 | 三井化学東セロ株式会社 | Food packaging film and food packaging body |
| JP2022035850A (en) * | 2020-08-21 | 2022-03-04 | 東洋紡株式会社 | Film for sealant |
| JP7631705B2 (en) | 2020-08-21 | 2025-02-19 | 東洋紡株式会社 | Sealant film |
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|---|---|
| JP4870285B2 (en) | 2012-02-08 |
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