JP2016022663A - Peelable packaging film - Google Patents
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- JP2016022663A JP2016022663A JP2014148354A JP2014148354A JP2016022663A JP 2016022663 A JP2016022663 A JP 2016022663A JP 2014148354 A JP2014148354 A JP 2014148354A JP 2014148354 A JP2014148354 A JP 2014148354A JP 2016022663 A JP2016022663 A JP 2016022663A
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- 239000012785 packaging film Substances 0.000 title claims abstract description 29
- 229920006280 packaging film Polymers 0.000 title claims abstract description 29
- 239000010410 layer Substances 0.000 claims abstract description 86
- 229920005615 natural polymer Polymers 0.000 claims abstract description 24
- 239000002344 surface layer Substances 0.000 claims abstract description 19
- 238000004806 packaging method and process Methods 0.000 claims abstract description 14
- 239000003925 fat Substances 0.000 claims description 36
- 239000003921 oil Substances 0.000 claims description 35
- 235000019198 oils Nutrition 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 16
- 238000000576 coating method Methods 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 229920001800 Shellac Polymers 0.000 claims description 11
- 239000005022 packaging material Substances 0.000 claims description 11
- 239000004208 shellac Substances 0.000 claims description 11
- 235000013874 shellac Nutrition 0.000 claims description 11
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical group OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 claims description 11
- 229940113147 shellac Drugs 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 10
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 9
- 239000008158 vegetable oil Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 9
- 235000013305 food Nutrition 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- -1 sucrose fatty acid ester Chemical class 0.000 description 7
- 235000019485 Safflower oil Nutrition 0.000 description 6
- 239000003813 safflower oil Substances 0.000 description 6
- 235000005713 safflower oil Nutrition 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 235000009508 confectionery Nutrition 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 229920000298 Cellophane Polymers 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 3
- 239000002537 cosmetic Substances 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 235000021067 refined food Nutrition 0.000 description 3
- 229920001661 Chitosan Polymers 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 229930006000 Sucrose Natural products 0.000 description 2
- 239000010775 animal oil Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000003851 corona treatment Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000008157 edible vegetable oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 238000007646 gravure printing Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000025 natural resin Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000005720 sucrose Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920002907 Guar gum Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 235000019486 Sunflower oil Nutrition 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000021323 fish oil Nutrition 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 238000009516 primary packaging Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000014102 seafood Nutrition 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 239000008159 sesame oil Substances 0.000 description 1
- 235000011803 sesame oil Nutrition 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
Landscapes
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
Description
本発明は、製品に接触した状態で包装でき、なおかつ、易剥離性も兼ね備えた包装用フィルムに関する。 The present invention relates to a packaging film that can be packaged in contact with a product and also has easy peelability.
例えば、水産加工品、和菓子、洋菓子等の食品をはじめ、化粧品、医薬品等の各種の製品においては、製品に保護フィルムを密着させることにより、空気中の湿気、粉塵、細菌類等の混入を阻止するとともに、保香性等を保持することにより製品の変質・劣化を防いでいる。 For example, in various products such as processed fishery products, Japanese confectionery, Western confectionery, and other products such as cosmetics and pharmaceuticals, the adhering of a protective film to the product prevents the entry of moisture, dust, bacteria, etc. in the air. At the same time, it retains the fragrance retention and prevents the product from being altered or deteriorated.
このようなフィルムは、バリアフィルム等としても知られており、これまでに種々の製品が開発されている。 Such a film is also known as a barrier film or the like, and various products have been developed so far.
例えば、セロハンの両面にヒートシ−ル層を有し、該ヒートシール層の一方の面にショ糖脂肪酸エステル（Ａ）とラウリル硫酸ナトリウム（Ｂ）とからなりその重量比（Ａ／Ｂ）が１〜１０である被覆層を有することを特徴とする蒲鉾包装用フィルムが提案されている（特許文献１）。 For example, the cellophane has a heat seal layer on both surfaces, and one surface of the heat seal layer is composed of sucrose fatty acid ester (A) and sodium lauryl sulfate (B), and the weight ratio (A / B) is 1. A film for bag packaging characterized by having a coating layer of 10 to 10 has been proposed (Patent Document 1).
また例えば、二軸延伸樹脂フィルムの少なくとも一方の面に、少なくともショ糖脂肪酸エステル（Ａ）で構成されている被覆層が形成された蒲鉾包装用フィルムであって、１２０℃で５分間熱処理したとき、フィルム引取方向（ＭＤ方向）の熱収縮率ＳＭＤが２〜８％、フィルム幅方向（ＴＤ方向）の熱収縮率ＳＴＤが１〜８％であるとともに、ＳＴＤ／ＳＭＤ≦１であり、前記ＭＤ方向及びＴＤ方向をそれぞれ長手方向とする長さ１５０ｍｍ及び幅１５ｍｍのフィルム片ＭＤ及びＴＤを、水平面の端部から５０ｍｍ繰り出したとき、垂れ下がったフィルム片の先端と前記端部から垂下する鉛直面との距離をＬとすると、フィルム片ＭＤのＬＭＤが１０〜２３．５ｍｍであり、フィルム片ＴＤのＬＬＤが２４〜３８ｍｍである蒲鉾包装用フィルムが知られている（特許文献２）。 Further, for example, when the film is a bag packaging film in which a coating layer composed of at least a sucrose fatty acid ester (A) is formed on at least one surface of a biaxially stretched resin film, and is heat-treated at 120 ° C. for 5 minutes thermal shrinkage rate S MD from 2 to 8% of the film take-up direction (MD direction), the thermal shrinkage of the film width direction (TD direction) STD is 1 to 8% be S TD / S MD ≦ 1 When a film piece MD and TD having a length of 150 mm and a width of 15 mm, each having the MD direction and the TD direction as the longitudinal direction, are fed out by 50 mm from the end of the horizontal plane, the film piece hangs from the end of the film piece and the end. When the distance between the vertical plane and L, L MD film piece MD is 10～23.5Mm, for kamaboko packaging L LD of the film piece TD is 24~38mm A film is known (Patent Document 2).
その他にも、紙，セロハン，プラスチックフィルム等の包装材表面に、Ａ．キトサンを溶解した有機酸水溶液を塗布して乾燥し，または乾燥せず、次いで，その上にアルカリ水溶液を塗布乾燥するか、または、Ｂ．アルカリ水溶液を塗布して乾燥し，または乾燥せず、次いで，その上にキトサンを溶解した有機酸水溶液を塗布乾燥する、という方法により水難溶性の皮膜を形成せしめることを特徴とする可食性皮膜を形成した加工食品包装材が知られている（特許文献３）。 In addition, A. on the surface of packaging materials such as paper, cellophane, and plastic film. B. Apply an aqueous organic acid solution in which chitosan is dissolved and dry it, or do not dry it, then apply an aqueous alkaline solution thereon and dry it. An edible film characterized by forming a poorly water-soluble film by applying an alkaline aqueous solution and drying or not drying, and then applying and drying an organic acid aqueous solution in which chitosan is dissolved. A formed processed food packaging material is known (Patent Document 3).
これら従来技術による包装用フィルムによれば、食品等を直接包装するのに適した特性を備えているとされているが、さらに改善する余地がある。例えば、蒲鉾等の水産加工食品を直接包装する場合は、密着性が悪く、それゆえに食品表面と包装フィルムとの間に空間が形成されると、その空間が（食品内部からの）遊離水等の滞留場所となり、細菌等の繁殖の原因となる。このため、上記のような空間が形成されないように、包装フィルムにおいては食品との良好な密着性が要求される。その一方、その密着性を強くすればそれだけフィルムを剥がす際に食品表面も追従して剥離されることになり、商品価値を下げる原因となる。このため、密着性と易剥離性とを両立することが必要とされているが、それを十分に満たす包装フィルムは未だ開発されるに至っていないのが現状である。 These packaging films according to the prior art are said to have characteristics suitable for directly packaging foods and the like, but there is room for further improvement. For example, when seafood processed foods such as rice cakes are directly packaged, the adhesion is poor, and therefore when a space is formed between the food surface and the packaging film, the space is free water (from inside the food), etc. It becomes a residence place of bacteria and causes breeding of bacteria. For this reason, the packaging film is required to have good adhesion to food so that the above space is not formed. On the other hand, if the adhesion is strengthened, the surface of the food is also peeled off as much as the film is peeled off, causing a reduction in commercial value. For this reason, it is necessary to satisfy both adhesiveness and easy peelability, but a packaging film that sufficiently satisfies this situation has not yet been developed.
従って、本発明の主な目的は、製品への密着性と良好な易剥離性とを兼ね備えた包装用フィルムを提供することにある。 Accordingly, a main object of the present invention is to provide a packaging film having both adhesiveness to a product and good peelability.
本発明者は、従来技術の問題点に鑑みて鋭意研究を重ねた結果、特定の構成を有するフィルムを採用することにより上記目的を達成できることを見出し、本発明を完成するに至った。 As a result of intensive studies in view of the problems of the prior art, the present inventor has found that the above object can be achieved by employing a film having a specific configuration, and has completed the present invention.
すなわち、本発明は、下記の剥離型包装用フィルムに係る。
１． 製品に接触した状態で製品を包装するためのフィルムであって、
（１）前記フィルムは、ａ）基材層と、ｂ１）天然高分子及び油脂を含む混合層又はｂ２）油脂を含む油脂層及び前記油脂層上に形成された天然高分子を含む表面層からなる２重層とを含み、
（２）前記混合層又は表面層が製品に直接的に接触した状態で使用される、
ことを特徴とする剥離性包装用フィルム。
２． 天然高分子がセラックである、前記項１に記載の包装材料。
３． 油脂が植物性油である、前記項１に記載の包装材料。
４． 混合層又は油脂層における油脂の乾燥後塗布量が０．０１〜０．５ｇ／ｍ２である、前記項１に記載の包装材料。
５． 混合層又は表面層における天然高分子の乾燥後塗布量が０．１５〜５．０ｇ／ｍ２である、前記項１に記載の包装材料。
６． 混合層又は表面層が、少なくとも天然高分子をアルコール類に溶解して得られる溶液を塗布した後、乾燥することによって得られる、前記項１に記載の包装材料。
That is, the present invention relates to the following peelable packaging film.
1. A film for packaging a product in contact with the product,
(1) The film includes: a) a base material layer; b1) a mixed layer containing a natural polymer and an oil or fat; or b2) an oil and fat layer containing an oil and fat and a surface layer containing a natural polymer formed on the oil and fat layer. And a double layer
(2) The mixed layer or surface layer is used in direct contact with the product.
A peelable packaging film characterized by the above.
2. Item 2. The packaging material according to Item 1, wherein the natural polymer is shellac.
3. Item 2. The packaging material according to Item 1, wherein the fat is vegetable oil.
4). Item 2. The packaging material according to Item 1, wherein the coating amount of the oil or fat after drying in the mixed layer or oily layer is 0.01 to 0.5 g / m 2 .
5). Item 2. The packaging material according to Item 1, wherein the coating amount of the natural polymer in the mixed layer or the surface layer after drying is 0.15 to 5.0 g / m2.
6). Item 2. The packaging material according to Item 1, wherein the mixed layer or the surface layer is obtained by applying a solution obtained by dissolving at least a natural polymer in alcohols and then drying.
本発明によれば、製品への密着性と良好な易剥離性とを兼ね備えた包装用フィルムを提供することができる。すなわち、製品（蒲鉾等の水産加工食品）に対して密着性に優れるので、製品と包装フィルムとの間に隙間が生じにくく、それ故に良好な保存性が期待できる。他方、製品の使用時等において、包装フィルムを取り除く際には、比較的容易に製品から剥がすことができるので、製品の表面状態を良好に保持することができる。 ADVANTAGE OF THE INVENTION According to this invention, the film for packaging which has the adhesiveness to a product and favorable easy peelability can be provided. That is, since it is excellent in adhesiveness to products (fishery processed foods such as rice cakes), it is difficult for gaps to occur between the product and the packaging film, and hence good storage stability can be expected. On the other hand, when the product is used, the packaging film can be removed from the product relatively easily, so that the surface state of the product can be maintained well.
また、包装用フィルムに形成される混合層又は２重層を構成する成分は、食用油及び／又は天然高分子を使用できるので、人体に対する安全性も高く、食品、医薬品、化粧品等の包装に好適に利用することができる。 In addition, since the components constituting the mixed layer or double layer formed on the packaging film can use edible oil and / or natural polymer, it is highly safe for the human body and is suitable for packaging foods, pharmaceuticals, cosmetics, etc. Can be used.
さらに、本発明の包装用フィルムは、加熱を受けた後においても、良好な密着性と易剥離性を維持することができる。このため、本発明の包装用フィルムで製品を包装したまま、所定の熱処理等を実施することができる。 Furthermore, the packaging film of the present invention can maintain good adhesion and easy peelability even after being heated. For this reason, predetermined heat processing etc. can be implemented with packaging a product with the packaging film of this invention.
このような特徴を有する包装用フィルムは、例えば食品、化粧品、医薬品等の各種の製品の包装において、製品（内容物、特に水分を含む固形分）に直接的に接触した状態での包装に好適に用いることができる。例えば、蒲鉾の包装（一次包装）、洋菓子・和菓子の包装等にも好適に用いることができる。 The packaging film having such characteristics is suitable for packaging in a state where it is in direct contact with a product (content, particularly solid content including moisture) in packaging of various products such as foods, cosmetics, and pharmaceuticals. Can be used. For example, it can be suitably used for packaging of candy (primary packaging), packaging of Western confectionery / Japanese confectionery, and the like.
本発明の剥離性包装用フィルムは、製品に接触した状態で製品を包装するためのフィルムであって、
（１）前記フィルムは、ａ）基材層と、ｂ１）天然高分子及び油脂を含む混合層又はｂ２）油脂を含む油脂層及び前記油脂層上に形成された天然高分子を含む表面層からなる２重層とを含み、
（２）前記混合層又は表面層が製品に直接的に接触した状態で使用される、
ことを特徴とする。
The peelable packaging film of the present invention is a film for packaging a product in contact with the product,
(1) The film includes: a) a base material layer; b1) a mixed layer containing a natural polymer and an oil or fat; or b2) an oil and fat layer containing an oil and fat and a surface layer containing a natural polymer formed on the oil and fat layer. And a double layer
(2) The mixed layer or surface layer is used in direct contact with the product.
It is characterized by that.
本発明の剥離性包装用フィルム（本発明フィルム）は、その層構成としては、上記ｂ１）又は上記ｂ２）の２つの態様を包含する。 The peelable packaging film of the present invention (the present film) includes the two aspects of the above b1) or b2) as its layer structure.
上記ｂ１）に係る本発明フィルム
上記ｂ１）の場合としては、図１に示すように、基材層１１上に混合層１２が積層されてなるフィルム１０が例示される。基材層１１と混合層１２との間には、本発明の効果を妨げない範囲内において他の層が介在しても良いが、特に基材層１１と混合層１２とが互いに隣接（接触）していることが望ましい。
The film of the present invention according to b1) In the case of b1), a film 10 in which a mixed layer 12 is laminated on a base material layer 11 is illustrated as shown in FIG. Other layers may be interposed between the base material layer 11 and the mixed layer 12 within a range that does not interfere with the effects of the present invention. In particular, the base material layer 11 and the mixed layer 12 are adjacent to each other (contacted). ) Is desirable.
基材層１１としては、特に限定されず、例えば合成樹脂フィルム、セロハンフィルム、金属箔等を使用することができる。合成樹脂フィルムとしては、ポリオレフィン樹脂、ナイロン（ポリアミド樹脂）、ポリエステル樹脂等を挙げることができる。基材層が混合層と接する面は、必要に応じてコロナ放電処理等の公知の表面処理が施されていても良い。 The base material layer 11 is not particularly limited, and for example, a synthetic resin film, a cellophane film, a metal foil, or the like can be used. Examples of the synthetic resin film include polyolefin resin, nylon (polyamide resin), and polyester resin. The surface where the base material layer is in contact with the mixed layer may be subjected to a known surface treatment such as a corona discharge treatment, if necessary.
基材層の厚みは限定的ではなく、基材層の材質、用途等に応じて適宜設定できるが、通常は１０〜１００μｍ程度とすることが好ましい。 The thickness of the base material layer is not limited, and can be appropriately set according to the material, use, etc. of the base material layer, but is usually preferably about 10 to 100 μm.
混合層は、天然高分子及び油脂を含む。天然高分子としては、セラック等の天然樹脂のほか、グアーガム、キサンタンガム等の天然多糖類が例示される。本発明では、これらの中でも、優れた密着性と易剥離性がより確実に得られるという見地よりセラックが好ましい。セラックは、ラックカイガラ虫の分泌物を精製して得られる天然樹脂であり、公知のもの又は市販品を使用することができる。 The mixed layer contains a natural polymer and an oil. Examples of the natural polymer include natural polysaccharides such as guar gum and xanthan gum, in addition to natural resins such as shellac. In the present invention, among these, shellac is preferable from the viewpoint that excellent adhesion and easy peelability can be obtained more reliably. Shellac is a natural resin obtained by refining the secretion of Larva spp., Known products or commercially available products can be used.
混合層中における天然高分子の含有量は、限定的ではないが、通常は６０〜９９重量％、特に８０〜９８重量％とすることが望ましい。また、混合層における天然高分子の乾燥後塗布量が０．１５〜５．０ｇ／ｍ２とすることが好ましい。 The content of the natural polymer in the mixed layer is not limited, but it is usually preferably 60 to 99% by weight, particularly 80 to 98% by weight. Moreover, it is preferable that the coating amount after drying of the natural polymer in a mixed layer shall be 0.15-5.0 g / m < 2 >.
また、油脂としては、食用油を好適に用いることができるが、植物性油又は動物性油のいずれであっても良い。植物性油としては、例えば紅花油、ごま油、なたね油、ひまわり油、大豆油、トウモロコシ油等が挙げられる。動物性油としては、例えばラード、魚油等が挙げられる。本発明では、特に植物性油が好ましく、とりわけ紅花油がより好ましい。 Moreover, although edible oil can be used suitably as fats and oils, any of vegetable oil or animal oil may be sufficient. Examples of vegetable oils include safflower oil, sesame oil, rapeseed oil, sunflower oil, soybean oil, corn oil and the like. Examples of animal oils include lard and fish oil. In the present invention, vegetable oil is particularly preferable, and safflower oil is more preferable.
混合層中における油脂の含有量は、限定的ではないが、通常は１〜４０重量％、特に２〜２０重量％とすることが望ましい。また、混合層における油脂の乾燥後塗布量が０．０１〜０．５ｇ／ｍ２とすることが好ましい。 The content of fats and oils in the mixed layer is not limited, but it is usually 1 to 40% by weight, particularly 2 to 20% by weight. Moreover, it is preferable that the coating amount after drying of fats and oils in a mixed layer shall be 0.01-0.5 g / m < 2 >.
混合層の形成方法は、特に制限されないが、例えばバーコーター、ドクタブレード等によるコーティング法のほか、グラビア印刷等の印刷法により実施することができる。これらの方法を実施する場合、溶媒中に天然高分子及び油脂を含む溶液又は分散液を用いることができる。より具体的には、セラック及び紅花油をエタノールに溶解させて得られる溶液を用い、基材層上にコーティング又は印刷を実施した後、乾燥する工程によって形成することができる。 The method for forming the mixed layer is not particularly limited, but for example, it can be carried out by a printing method such as gravure printing in addition to a coating method using a bar coater, a doctor blade or the like. When carrying out these methods, a solution or dispersion containing a natural polymer and fats and oils in a solvent can be used. More specifically, using a solution obtained by dissolving shellac and safflower oil in ethanol, coating or printing may be performed on the base material layer, followed by drying.
上記ｂ２）に係る本発明フィルム
上記ｂ２）の場合としては、図２に示すように、基材層１１上に油脂層１３及び表面層１４からなる２重層が積層されてなるフィルム１０が例示される。基材層１１と油脂層１３との間には、本発明の効果を妨げない範囲内において他の層が介在しても良いが、基材層１１と油脂層１３とが互いに隣接（接触）していることが望ましい。また、基材層が油脂層と接する面は、必要に応じてコロナ放電処理等の公知の表面処理が施されていても良い。
The film of the present invention according to the above b2) In the case of the above b2), as shown in FIG. 2, a film 10 in which a double layer composed of an oil and fat layer 13 and a surface layer 14 is laminated on a base material layer 11 is exemplified. The Although other layers may be interposed between the base material layer 11 and the oil and fat layer 13 within a range not impeding the effects of the present invention, the base material layer 11 and the oil and fat layer 13 are adjacent to each other (contact). It is desirable that Moreover, the surface which a base material layer contact | connects an oil-fat layer may be given well-known surface treatments, such as a corona discharge treatment, as needed.
油脂層に含まれる油脂は、前記ｂ１）に係るフィルムと同様とすれば良い。この場合においても、特に紅花油を好適に用いることができる。 The oil and fat contained in the oil and fat layer may be the same as the film according to b1). Also in this case, safflower oil can be particularly preferably used.
また、油脂層における油脂の乾燥後塗布量は限定的ではないが、通常０．０１〜０．５ｇ／ｍ２とすることが好ましい。 Moreover, although the application amount after drying of the fats and oils in a fat layer is not limited, Usually, it is preferable to set it as 0.01-0.5 g / m < 2 >.
表面層に含まれる天然高分子、前記ｂ１）に係るフィルムと同様とすれば良い。この場合においても、特にセラックを好適に用いることができる。また、表面層には、必要に応じて油脂を含有させることもできる。油脂としては、前記ｂ１）に係るフィルムと同様とすれば良い。また、油脂の含有量も、前記ｂ１）に係るフィルムの混合層と同様とすれば良い。 The natural polymer contained in the surface layer may be the same as the film according to the b1). Even in this case, shellac can be particularly preferably used. Moreover, fats and oils can also be contained in a surface layer as needed. The oil and fat may be the same as the film according to b1). Moreover, what is necessary is just to make the content of fats and oils the same as that of the mixed layer of the film which concerns on said b1).
表面層における天然高分子の乾燥後塗布量は制限されないが、通常は０．１５〜５．０ｇ／ｍ２とすることが好ましい。 The coating amount of the natural polymer after drying in the surface layer is not limited, but it is usually preferably 0.15 to 5.0 g / m 2 .
油脂層及び表面層の形成方法は、特に制限されないが、例えばバーコーター、ドクタブレード等によるコーティング法のほか、グラビア印刷等の印刷法により実施することができる。これらの方法を実施する場合、溶媒中に天然高分子及び油脂を含む溶液又は分散液を用いることができる。より具体的には、セラック又は紅花油をエタノールに溶解させて得られる溶液を用い、基材層上にコーティング又は印刷を実施した後、乾燥する工程によって形成することができる。 The method for forming the oil and fat layer and the surface layer is not particularly limited, and can be carried out by a printing method such as gravure printing in addition to a coating method using a bar coater, a doctor blade or the like. When carrying out these methods, a solution or dispersion containing a natural polymer and fats and oils in a solvent can be used. More specifically, a solution obtained by dissolving shellac or safflower oil in ethanol can be used for coating or printing on the substrate layer, followed by drying.
以下に実施例を示し、本発明の特徴をより具体的に説明する。ただし、本発明の範囲は、実施例に限定されない。 The features of the present invention will be described more specifically with reference to examples. However, the scope of the present invention is not limited to the examples.
なお、本実施例では、植物性油として市販の食用紅花油（日清べに花油：日清オイリオグループ株式会社）を用い、天然高分子として市販のセラック（ＡＳ−２０：株式会社岐阜セラツク製造所）を用いた。 In the present example, commercially available edible safflower oil (Nisshin beni flower oil: Nisshin Oillio Group Co., Ltd.) is used as the vegetable oil, and commercially available shellac (AS-20: Gifu Seratsuk Factory) as a natural polymer ) Was used.
実施例１
厚み２５μｍのポリプロピレンフィルムを基材層として用い、その表面上に２重層を形成した。より具体的には、植物性油１重量％がエタノールに溶解した溶液を基材層上にバーコーター（５番）にてコーティングした後、乾燥することにより油脂層を形成した。その後、セラック２０重量％及び植物性油１重量％がエタノールに溶解した溶液を前記油脂層上にバーコーター（５番）にてコーティングした後、乾燥することにより表面層を形成した。このようにしてポリプロピレン基材層上に２重層を有する包装フィルムを得た。
Example 1
A polypropylene film having a thickness of 25 μm was used as a base material layer, and a double layer was formed on the surface thereof. More specifically, a fat and oil layer was formed by coating a solution in which 1% by weight of vegetable oil was dissolved in ethanol on the base layer with a bar coater (No. 5) and then drying. Thereafter, a solution in which 20% by weight of shellac and 1% by weight of vegetable oil were dissolved in ethanol was coated on the oil and fat layer with a bar coater (No. 5), and then dried to form a surface layer. Thus, the packaging film which has a double layer on a polypropylene base material layer was obtained.
実施例２
厚み２５μｍのポリプロピレンフィルムを基材層として用い、その表面上に混合層を形成した。より具体的には、セラック２０重量％及び植物性油１重量％がエタノールに溶解した溶液を前記基材層上にバーコーター（５番）にてコーティングした後、乾燥することにより表面層を形成した。このようにしてポリプロピレン基材層上に混合層を有する包装フィルムを得た。
Example 2
A polypropylene film having a thickness of 25 μm was used as a base material layer, and a mixed layer was formed on the surface thereof. More specifically, a solution in which 20% by weight of shellac and 1% by weight of vegetable oil are dissolved in ethanol is coated on the base material layer with a bar coater (No. 5) and then dried to form a surface layer. did. Thus, the packaging film which has a mixed layer on a polypropylene base material layer was obtained.
実施例３
基材層としてセロハンを用いたほかは、実施例１と同様にしてポリプロピレン基材層上に２重層を有する包装フィルムを得た。
Example 3
A packaging film having a double layer on a polypropylene base layer was obtained in the same manner as in Example 1 except that cellophane was used as the base layer.
試験例１
実施例１〜３で得られた包装フィルムの密着性及び易剥離性を調べた。測定方法は、ＪＩＳ Ｚ ０２３７に準拠して実施した。より具体的には、包装フィルムに粘着テープ（一般家庭用粘着テープ）をシワと空気が入らないように軽く密着させ、約２００ｇの円筒状の空き缶により粘着テープの上を１往復させ、前記空き缶の自重により加圧した。次いで、粘着テープを包装フィルムから剥がす際の強度（剥離強度）を測定した。その結果を表１に示す。
Test example 1
The adhesion and easy peelability of the packaging films obtained in Examples 1 to 3 were examined. The measuring method was implemented based on JISZ0237. More specifically, an adhesive tape (general household adhesive tape) is lightly adhered to the packaging film so that wrinkles and air do not enter, and the blank can is reciprocated once by an approximately 200 g cylindrical empty can. Was pressurized by its own weight. Next, the strength (peel strength) when peeling the adhesive tape from the packaging film was measured. The results are shown in Table 1.
なお、実用的な剥離強度は、一般的には５〜２０ｇ／２０ｍｍの範囲内であれば良い。剥離強度が５ｇ／２０ｍｍ未満の場合は密着性が低すぎる一方、剥離強度が２０ｇ／２０ｍｍを超える場合は包装フィルムが製品表面に接着し、剥離時に製品の一部が包装フィルムに固定されて追従してしまうおそれがある。 In addition, practical peel strength should just be in the range of 5-20 g / 20mm generally. When the peel strength is less than 5 g / 20 mm, the adhesion is too low, while when the peel strength exceeds 20 g / 20 mm, the packaging film adheres to the product surface, and a part of the product is fixed to the packaging film at the time of peeling. There is a risk of it.
表１の結果からも明らかように、実施例１〜３のフィルムでは、剥離強度が５〜１５ｇ／２０ｍｍの範囲内にあり、密着性と易剥離性とが両立されていることがわかる。 As is clear from the results in Table 1, in the films of Examples 1 to 3, the peel strength is in the range of 5 to 15 g / 20 mm, and it can be seen that both adhesion and easy peelability are compatible.
試験例２
実施例３で得られた包装フィルムについて、試験例１と同様にして剥離強度測定用サンプルを作成した後、大気中にて所定の熱処理に供した後、試験例１と同様にして剥離強度を測定した。その熱処理条件と剥離強度の測定結果を表２に示す。
Test example 2
About the packaging film obtained in Example 3, after making the sample for peel strength measurement like Test Example 1, it used for predetermined heat processing in air | atmosphere, Then, it peeled like Test Example 1 It was measured. The heat treatment conditions and peel strength measurement results are shown in Table 2.
表２の結果からも明らかように、加熱後においても、剥離強度が５〜１５ｇ／２０ｍｍの範囲内に維持されており、密着性と易剥離性との両立が実現されていることがわかる。 As is clear from the results in Table 2, it can be seen that even after heating, the peel strength is maintained within the range of 5 to 15 g / 20 mm, and both cohesion and easy peelability are realized.
Claims (6)
（１）前記フィルムは、ａ）基材層と、ｂ１）天然高分子及び油脂を含む混合層又はｂ２）油脂を含む油脂層及び前記油脂層上に形成された天然高分子を含む表面層からなる２重層とを含み、
（２）前記混合層又は表面層が製品に直接的に接触した状態で使用される、
ことを特徴とする剥離性包装用フィルム。 A film for packaging a product in contact with the product,
(1) The film includes: a) a base material layer; b1) a mixed layer containing a natural polymer and an oil or fat; or b2) an oil and fat layer containing an oil and fat and a surface layer containing a natural polymer formed on the oil and fat layer. And a double layer
(2) The mixed layer or surface layer is used in direct contact with the product.
A peelable packaging film characterized by the above.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0540176U (en) * | 1991-10-29 | 1993-05-28 | 大阪化学合金株式会社 | Film for coating paste products |
| JPH0635165U (en) * | 1991-10-29 | 1994-05-10 | 大阪化学合金株式会社 | Film for coating paste products |
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2014
- 2014-07-18 JP JP2014148354A patent/JP2016022663A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0540176U (en) * | 1991-10-29 | 1993-05-28 | 大阪化学合金株式会社 | Film for coating paste products |
| JPH0635165U (en) * | 1991-10-29 | 1994-05-10 | 大阪化学合金株式会社 | Film for coating paste products |
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