JPH02108534A - Laminated film soluble in cold water - Google Patents
Laminated film soluble in cold waterInfo
- Publication number
- JPH02108534A JPH02108534A JP26367188A JP26367188A JPH02108534A JP H02108534 A JPH02108534 A JP H02108534A JP 26367188 A JP26367188 A JP 26367188A JP 26367188 A JP26367188 A JP 26367188A JP H02108534 A JPH02108534 A JP H02108534A
- Authority
- JP
- Japan
- Prior art keywords
- film
- cold water
- pva
- resins
- molecular weight
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 229920005989 resin Polymers 0.000 claims abstract description 51
- 239000011347 resin Substances 0.000 claims abstract description 51
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 34
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 34
- 239000005022 packaging material Substances 0.000 claims abstract description 15
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 11
- 239000003599 detergent Substances 0.000 claims description 8
- 239000013042 solid detergent Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 8
- 239000002253 acid Substances 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 7
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract description 3
- 229920000642 polymer Polymers 0.000 abstract description 3
- 150000007513 acids Chemical class 0.000 abstract 2
- -1 e.g. Substances 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 33
- 238000004049 embossing Methods 0.000 description 15
- 239000007788 liquid Substances 0.000 description 13
- 239000002356 single layer Substances 0.000 description 9
- 238000005266 casting Methods 0.000 description 8
- 239000002202 Polyethylene glycol Substances 0.000 description 7
- 239000003513 alkali Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 239000012459 cleaning agent Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000009751 slip forming Methods 0.000 description 6
- 235000010215 titanium dioxide Nutrition 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 239000004014 plasticizer Substances 0.000 description 4
- 238000007127 saponification reaction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 238000009757 thermoplastic moulding Methods 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004373 Pullulan Substances 0.000 description 1
- 229920001218 Pullulan Polymers 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 238000009512 pharmaceutical packaging Methods 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920001289 polyvinyl ether Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 235000019423 pullulan Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は冷水可溶性多層フィルムに関する。[Detailed description of the invention] [Industrial application field] The present invention relates to cold water soluble multilayer films.
更に詳しくはポリビニルアルコール（以下ＰＶＡと略す
）系樹脂とポリエチレンオキサイド樹脂（以下ＰＥＯと
略す）とから成り、包装材としてのフィルム強度、耐酸
耐アルカリ等耐薬剤性、ヒートシール性を有し、高湿度
下でも粘着せず、且つ冷水に可溶な多層フィルムに関す
る（但し本発明でいう所のフィルムとは多層化された全
体の厚さが５ｍ１ｍ１以下のシート状物をいい、発泡状
のシート状物をも含むものである）。More specifically, it is made of polyvinyl alcohol (hereinafter abbreviated as PVA) based resin and polyethylene oxide resin (hereinafter abbreviated as PEO), and has film strength as a packaging material, acid resistance, alkali resistance and other chemical resistance, and heat sealability. It relates to a multilayer film that does not stick even under humidity and is soluble in cold water (however, in the present invention, the film refers to a multilayered sheet-like product with a total thickness of 5 m1 or less, and includes a foamed sheet-like product. (It also includes things).
〔従来の技術及び発明が解決しようとする課題〕水不溶
性樹脂から成る多層フィルムは一般包装分野で多くの技
術が開示され、実用化されている。[Prior Art and Problems to be Solved by the Invention] Many technologies have been disclosed and put into practical use in the field of general packaging regarding multilayer films made of water-insoluble resins.
近年、薬剤、洗剤、使い捨て日用品、化粧品、生理用品
等の包装に水可溶性フィルムの要望が急増している。In recent years, the demand for water-soluble films for packaging drugs, detergents, disposable daily necessities, cosmetics, sanitary products, etc. has rapidly increased.
これらは、内容物を包装したまま水に溶解して使用する
か、使用時に開封した包材をそのまま水に流して捨てる
ことができるよう、使用する水の温度で容易に溶解する
ことが特に要求されている。These materials are particularly required to be easily dissolved at the temperature of the water used so that the contents can be dissolved in water while still being packaged, or the packaging material that has been opened during use can be poured into water and discarded. has been done.
こうした水可溶性フィルムとしては、プルラン、セルロ
ース誘導体、ＰＶＡ 、 ＰＥＯ、ポリビニルエーテル
、ポリビニルピロリドン等、天然及び合成樹脂から成る
ものが知られている。中でも酢酸ビニルの重合体を鹸化
して得られるＰＶＡフィルムは、その優れた機械的性質
及びガスバリヤ−性から包装材フィルムとして広く用い
られている。As such water-soluble films, those made of natural and synthetic resins such as pullulan, cellulose derivatives, PVA, PEO, polyvinyl ether, and polyvinylpyrrolidone are known. Among them, PVA films obtained by saponifying vinyl acetate polymers are widely used as packaging films due to their excellent mechanical properties and gas barrier properties.
しかし、「冷水可溶性」と「高湿時の非粘着性」と言う
相反する要求物性を両立させることが出来ず、水可溶性
フィルムとしての利用拡大が阻まれている。However, it is not possible to satisfy the contradictory physical properties of ``solubility in cold water'' and ``non-adhesiveness at high humidity'', which has hindered the expansion of its use as a water-soluble film.
又、ＰＶＡに次ぐ水可溶性樹脂としてＰＥＯは、冷水可
溶性を有し、且つ高湿度でも比較的粘着性が少ない特徴
を持っているが、「包装材としてのフィルム強度」に欠
は実用化されるに至っていない、上記２種以外の樹脂も
、それぞれ固有の特性を持っているが、反面欠点をカバ
ーすることが出来ず実用性に乏しい。In addition, as a water-soluble resin second only to PVA, PEO is soluble in cold water and has relatively low stickiness even in high humidity, but it lacks ``film strength as a packaging material'' before it can be put into practical use. Resins other than the above two types, which have not yet reached this point, each have their own unique characteristics, but on the other hand, they cannot overcome the drawbacks and are of little practical use.
この欠点を改良する為、２種以上の樹脂を混合する技術
が開示されている０例えば、特開昭５７−１２５２４０
号公報ではｒ ＰＶＡとポリアクリル酸とから成る水溶
性フィルム」が、特開昭５０−９８９５２号公報ではｒ
ＰＶＡとポリエチレングリコールとから成る冷水可溶
性フィルム製造用の溶融押出し可能な組成物」が、特開
昭６０−１５８２４５号公報ではｒ ＰＶＡとポリビニ
ルピロリドン等から成る水溶性フィルム」が開示されて
いる。しかし、これらは均一に混合するもので、鹸化さ
れると冷水に難溶性となる部分鹸化ＰＶＡが、アルカリ
性薬剤等包装する物と直接接触する構成にあり、耐アル
カリ性の樹脂で希釈されているだけで本質的に改良され
ていない。In order to improve this drawback, a technique of mixing two or more types of resins has been disclosed.
In JP-A-50-98952, ``a water-soluble film made of PVA and polyacrylic acid'' is described.
JP-A-60-158245 discloses a "melt-extrudable composition for producing a cold water-soluble film comprising PVA and polyethylene glycol" and a "water-soluble film comprising PVA and polyvinylpyrrolidone, etc.". However, these products are mixed uniformly, and the partially saponified PVA, which becomes poorly soluble in cold water when saponified, is in direct contact with the packaged items such as alkaline drugs, and is only diluted with alkali-resistant resin. has not been essentially improved.
又、水可溶性樹脂は一部を除いて、溶融温度と熱分解温
度の差が小さく、低分子量域以外では熱可塑成形が困難
であるため、フィルム化は一般にキャスティングによっ
て行われるが、２種以上の樹脂と水等の溶媒系では、溶
液調製時は均一でも、キャスティング途中の溶媒減少時
に不均一系になることが多く、実生産への展開は難しい
、又、熱可塑成形可能な組成物では、分子量が小さくて
包装材としてのフィルム強度が不足で実用性を欠く。In addition, except for some water-soluble resins, the difference between melting temperature and thermal decomposition temperature is small, and thermoplastic molding is difficult except in the low molecular weight range, so film formation is generally done by casting, but two or more types Even if the solution is homogeneous when the solution is prepared using a solvent system such as resin and water, it often becomes a non-uniform system when the solvent is reduced during casting, making it difficult to apply to actual production. , the molecular weight is small and the film strength as a packaging material is insufficient, making it impractical.
又、これらは単層構成であるため、シール性が劣ってお
り、包装加工法として簡便なヒートシールが出来ないか
、出来るとしてもシール可能な温度では、低張力でも伸
びてしまう欠点を有する。In addition, since these have a single-layer structure, they have poor sealing properties, and if heat sealing is not possible as a simple packaging processing method, or even if it is possible, they have the disadvantage that they stretch even under low tension at sealable temperatures.
このような状況下に、本発明は、包装材としてのフィル
ム強度、耐酸耐アルカリ等耐薬剤性、ヒートシール性を
有し、高湿度下でも粘着せず、且つ冷水に可溶な多層フ
ィルムを提案せんとするものである。Under these circumstances, the present invention developed a multilayer film that can be used as a packaging material, has film strength, acid resistance, alkali resistance, and heat sealability, does not stick even under high humidity, and is soluble in cold water. This is what I would like to propose.
本発明者らは上記課題を解決すべく鋭意検討した結果、
ＰＶＡ系樹脂とＰＨＯとを積層させて成る冷水可溶性多
層フィルムが、包装材としてのフィルム強度、耐酸耐ア
ルカリ等耐薬剤性、ヒートシール性を有し、高湿度下で
も粘着せず、且つ冷水に可溶であることを見出し、本発
明を完成するに至ったものである。As a result of intensive study by the present inventors to solve the above problems,
A cold water soluble multilayer film made by laminating PVA resin and PHO has film strength suitable for packaging materials, acid resistance, alkali resistance and other chemical resistance, heat sealability, does not stick even under high humidity, and is resistant to cold water. It was discovered that it is soluble and led to the completion of the present invention.
即ち、本発明は、分子量１８０００〜１１００００（７
）ＰＶＡ系樹脂と平均分子量１００００以上のポリエチ
レンオキサイド樹脂とを積層させて成ることを特徴とす
る冷水可溶性多層フィルムを提供するものである。That is, the present invention has a molecular weight of 18,000 to 110,000 (7
) A cold water soluble multilayer film is provided, which is characterized by being formed by laminating a PVA resin and a polyethylene oxide resin having an average molecular weight of 10,000 or more.
本発明のフィルムの多層構成は、例えば、（イ） ＰＥ
Ｇ ／ＰＶＡ系樹脂、（ｏ ） ＰＲＯ／ ＰＶＡ系樹
脂／ＰＩ！Ｏ等から成り、必要に応じて（イ）又は（ロ
）の繰り返し多層構成でもよい。The multilayer structure of the film of the present invention includes, for example, (a) PE
G/PVA resin, (o) PRO/PVA resin/PI! If necessary, it may have a multilayer structure in which (a) or (b) are repeated.
本発明の多層フィルムは、ＰＶＡのフィルム強度、ガス
バリヤ−性、変性ＰＶＡの再付着（再汚染）防止性、Ｐ
ＥＯの耐薬剤性、高湿度下における非粘着性、低温ヒー
トシール性等の特徴を利用したものであり、用途に応じ
た構成をとることができるが、上記の中でも（ロ）の構
成が特に好ましい。The multilayer film of the present invention has PVA film strength, gas barrier properties, modified PVA redeposition (recontamination) prevention properties, PVA film strength,
It utilizes the characteristics of EO such as chemical resistance, non-adhesiveness under high humidity, and low-temperature heat sealability, and can be configured according to the application, but among the above, configuration (b) is particularly effective. preferable.
又、本発明の多層フィルムの別の特徴は、通常Ｐ％ｌＡ
系樹脂の可塑化に使用される多価アルコール系可塑剤は
ＰＢＯとの親和性が弱い為、可塑化ＰＶＡ系樹脂の単層
フィルムではしばしば問題となった可塑剤の経時減少が
防止できるという点にある。Another feature of the multilayer film of the present invention is that usually P%lA
Since the polyhydric alcohol plasticizer used to plasticize the resin has a weak affinity with PBO, it is possible to prevent the plasticizer from decreasing over time, which is often a problem with single-layer films of plasticized PVA resin. It is in.
本発明の多層フィルムの各層の厚さ比は特に制限されず
、目的／用途によって自由に選択できる０例えば、フィ
ルム強度が重視される用途にはＰＶＡ系樹脂層を厚くし
、耐薬剤性が重視される用途にはＰＥＯ層を厚くすると
良い、又、ＰＶＡ系樹脂、ＰＥＧ共に、各々２層以上に
する時は、各層に同じ組成物を用いてもよく、別々の組
成物を用いてもよい、各層の厚さも同様である。The thickness ratio of each layer of the multilayer film of the present invention is not particularly limited and can be freely selected depending on the purpose/use.For example, for applications where film strength is important, the PVA resin layer may be thickened, and chemical resistance is important. It is better to thicken the PEO layer for applications such as PVA resin and PEG, and when using two or more layers each, the same composition may be used for each layer, or separate compositions may be used for each layer. , the thickness of each layer is also similar.
多層化したフィルムの厚さは特に限定されないが、通常
１０〜１００μであり、好適には２０〜５０μである。The thickness of the multilayered film is not particularly limited, but is usually 10 to 100 microns, preferably 20 to 50 microns.
又、各層、特に中間部の層は発泡体としてもよい。又、
フィルム全体がフラットでもよく、エンボス加工等で凹
凸状にしてもよい。Further, each layer, especially the middle layer, may be made of foam. or,
The entire film may be flat, or may be textured by embossing or the like.
本発明の多層フィルムを得る製法は特に制限されない、
ＰＲＯ、ＰＶＡ系樹脂共に熱可塑成形によってもよく
、特にＰＥＯは熱可塑成形が容易であるため、ＰＶＡ系
樹脂層をキャスティングによってフィルム化した後、Ｐ
ＥＧを熱可塑成形によってラミネートしてもよい、又、
両層を逐次キャスティングによって積層してもよく、同
時多層キャスティングによってもよい。The manufacturing method for obtaining the multilayer film of the present invention is not particularly limited.
Both PRO and PVA resin may be thermoplastic molded. PEO is particularly easy to thermoplastic mold, so after forming a PVA resin layer into a film by casting,
EG may be laminated by thermoplastic molding, or
Both layers may be laminated by sequential casting or by simultaneous multilayer casting.
特に、同時多層キャスティング法による場合、本発明の
水可溶性樹脂の水溶液の組み合わせ即ちｒ ＰＶＡ系樹
脂−水系とＰＥＧ−水系」は、高濃度域で相互拡散しに
くくなるため両層は大部分混らないまま、しかし両層の
界面は十分相互溶解するため自己接着を起こし、両層間
に第３の接着剤層を必要としないので、生産性の高い方
法と言える０例えば、回転する加熱されたドラム、又は
ベルト上に、多層グイから多層状の樹脂溶液を供給、乾
燥する方法が好適である。In particular, when using the simultaneous multilayer casting method, the combination of aqueous solutions of water-soluble resins of the present invention, i.e., PVA-based resin-water system and PEG-water system, becomes difficult to interdiffuse in high concentration ranges, so both layers are mostly mixed. However, the interface between both layers is sufficiently mutually fused to cause self-adhesion, and there is no need for a third adhesive layer between the two layers, making it a highly productive method.For example, a rotating heated drum Alternatively, a method of supplying a multilayer resin solution from a multilayer gouer onto a belt and drying it is suitable.
本発明に用いられるＰＶＡ系樹脂は特に制限されず、部
分鹸化ＰＶＡ 、カルボン酸等アニオン変性ＰＶＡ 、
オレフィン等ノニオン変性ＰＶＡ 、カチオン変性ＰＶ
Ａ等の変性ＰＶＡが用いられる０部分鹸化ＰＶＡの場合
、単層フィルムでは、例えばアルカリ性薬剤を包装する
と鹸化が進行して冷水難溶性となり、用途が制限される
が、本発明の多層構成では問題なく使用できる。The PVA-based resin used in the present invention is not particularly limited, and includes partially saponified PVA, anion-modified PVA such as carboxylic acid, etc.
Nonionic modified PVA such as olefin, cationic modified PV
In the case of partially saponified PVA, such as modified PVA such as A, in a single layer film, for example, when an alkaline drug is packaged, saponification progresses and it becomes poorly soluble in cold water, which limits its use, but the multilayer structure of the present invention does not have this problem. Can be used without
本発明では、ＰＶＡ系樹脂の１つの大きな役目はフィル
ム強度を上昇させることであり、この面からは分子量は
１８０００以上であり、３００００以上が特に好ましい
。又、冷水可溶性の点から分子量は１１００００以下で
あり、８００００以下が特に好ましい。In the present invention, one major role of the PVA-based resin is to increase film strength, and from this point of view, the molecular weight is 18,000 or more, particularly preferably 30,000 or more. In addition, from the viewpoint of cold water solubility, the molecular weight is 110,000 or less, particularly preferably 80,000 or less.
又、本発明に用いられるＰＶＡ系樹脂は必要に応じて可
塑剤、充填剤、補強材、着色剤等の通常ＰＶＡ系樹脂フ
ィルムに用いられる添加剤を配合することができる。Furthermore, the PVA resin used in the present invention may be blended with additives normally used in PVA resin films, such as plasticizers, fillers, reinforcing materials, and colorants, as required.
本発明に用いられるＰＲＯは、通常の製法で製造される
エチレンオキサイドの付加重合物で、平均分子量１ｏｏ
ｏｏ以上のものが用いられる。特に好ましくは１０００
００以上である。平均分子量が１００００未満では高湿
度下での粘着性があり、フィルム強度が弱く、脱落しや
すくなる点から好ましくない、 ＰＥＧの平均分子量の
上限は制限されず、現在生産されている５００万でも、
又それ以上でも使用できる。PRO used in the present invention is an addition polymer of ethylene oxide produced by a normal manufacturing method, and has an average molecular weight of 100
oo or higher is used. Particularly preferably 1000
00 or more. If the average molecular weight is less than 10,000, it is undesirable because it is sticky under high humidity, the film strength is weak, and it easily falls off.There is no upper limit on the average molecular weight of PEG, and even with the currently produced 5 million,
It can also be used for more than that.
又、本発明に用いられるＰＲＯは、必要に応じて可塑剤
、充填剤、補強材、着色剤等を配合することができる。Furthermore, the PRO used in the present invention may be blended with plasticizers, fillers, reinforcing materials, colorants, etc. as necessary.
本発明の多層フィルムの形状は平滑でもよいが、エンボ
ス加工等により、フィルムに凹凸をつけることは、「冷
水可溶性」と「ブロッキング防止性」から特に有効であ
る。Although the multilayer film of the present invention may have a smooth shape, it is particularly effective to provide the film with unevenness by embossing or the like in terms of "cold water solubility" and "blocking prevention properties."
本発明で冷水とは、０〜４０℃の水をいう。In the present invention, cold water refers to water at a temperature of 0 to 40°C.
水可溶性フィルムは保存時吸湿してブロッキングし易い
が、凹凸による接触面積の低下は、冷水可溶性、耐酸耐
アルカリ等耐薬剤性、ヒートシール性等の他の物性に全
く害を与えないブロッキング防止法で本発明の用途には
特に有効である。好ましい凹凸の形状は１０〜６０メツ
シユの格子状又は亀甲状で、フィルムの一部分又は全体
が凹凸化し、みかけ厚さが真の厚さの１．５倍以上、特
に２倍以上であるものが好ましい。Water-soluble films tend to absorb moisture and block during storage, but reducing the contact area due to unevenness is a blocking prevention method that does not harm other physical properties such as cold water solubility, acid resistance, alkali resistance, heat sealability, etc. This is especially effective for the use of the present invention. The preferred shape of the unevenness is a lattice or hexagonal shape with 10 to 60 meshes, a part or the whole of the film is uneven, and the apparent thickness is preferably 1.5 times or more, particularly 2 times or more, the true thickness. .
凹凸化の方法は特に制限されず、例えば、凹凸面を有す
る支持体上にキャスティングしてもよく、フラットフィ
ルムをエンボッシングカレンダーによって後加工で成形
してもよい。The method for forming the unevenness is not particularly limited, and for example, casting may be performed on a support having an uneven surface, or a flat film may be formed by post-processing using an embossing calender.
本発明の冷水可溶性多層フィルムは、「包装材としての
フィルム強度」、「耐酸耐アルカリ等耐薬剤性」、ｒ高
湿度時の非粘着性」、「冷水可溶性」、「ヒートシール
性」等の特性を有し、幅広い分野に応用可能である０例
えば、衣料用洗剤、漂白剤、農薬等の粉末、粒状あるい
は塊杖の薬剤包装材、ランドリーバッグをはじめ、使い
捨て日用品、化粧品、生理用品等の包装材等として有用
である。特に−回の使用分を１又は２以上に個装し、そ
のまま洗浄系に投入して使用する個装洗浄剤の包装用に
好適である。The cold water soluble multilayer film of the present invention has properties such as ``film strength as a packaging material,'' ``acid resistance, alkali resistance, and other chemical resistance,'' non-adhesion at high humidity, ``cold water solubility,'' and ``heat sealability.'' For example, laundry detergent, bleach, agricultural chemicals, powder, granular or lump drug packaging materials, laundry bags, disposable daily necessities, cosmetics, sanitary products, etc. It is useful as a packaging material, etc. It is particularly suitable for packaging individual packaged cleaning agents that are packaged into one or two or more units for one or more uses and then put into a cleaning system as they are.
これら個装洗浄剤におけるフィルムの「冷水可溶性」と
は、使用時、洗浄系に投入すると速やかに破袋して洗剤
を洗浄系になるべく早く放出することである（真の溶解
は洗濯時間（５〜７分）中に完了すればよい）。フィル
ムに凹凸があると、投入直後の吸水膨潤時の速度差によ
って応力が部分的に集中して破壊しやすくなり、機械撹
拌による弱い力でも破袋時間が短縮されるので好ましい
。The "cold water soluble" nature of the film in these individual packaging detergents means that when used, the bag breaks immediately when put into the cleaning system, and the detergent is released into the cleaning system as quickly as possible (true dissolution takes washing time (5 It should be completed within ~7 minutes). If the film has irregularities, it is preferable because the stress will be locally concentrated due to the difference in speed during water absorption and swelling immediately after the film is added, making it easier to break, and the time required to break the bag will be shortened even with a weak force from mechanical stirring.
以下、本発明の冷水可溶性多層フィルムについて、実施
例をあげて詳しく説明するが、本発明はこれらに何ら限
定されるものではない。Hereinafter, the cold water soluble multilayer film of the present invention will be explained in detail by giving Examples, but the present invention is not limited thereto.
尚、「部」は特に指定しない場合は「重量部」を意味す
る。Note that "parts" means "parts by weight" unless otherwise specified.
実施例１
重合度１７５０、鹸化度８８．２ａ＋ｏ１％の部分鹸化
ＰＶＡ１００部を水６００部に溶解し、グリセリンを１
０部加え均一水溶液とし、樹脂液■を得た。Example 1 100 parts of partially saponified PVA with a degree of polymerization of 1750 and a degree of saponification of 88.2a+o1% was dissolved in 600 parts of water, and 1% of glycerin was dissolved in it.
0 part was added to make a homogeneous aqueous solution to obtain a resin liquid (■).
平均分子量約４０万のＰＥＯ（期成化学工業■製アルコ
ックスＥ−３０） １００部を水１９００部に溶解し、
チタンホワイト２部を加え均一水溶液とし、樹脂液■を
得た（チタンホワイトはフィルム化時の層状態を見やす
くするために添加した）。Dissolve 100 parts of PEO (Alcox E-30 manufactured by Kisei Kagaku Kogyo ■) with an average molecular weight of approximately 400,000 in 1900 parts of water,
2 parts of titanium white was added to make a homogeneous aqueous solution to obtain resin liquid (2) (titanium white was added to make it easier to see the layer state during film formation).
熱風乾燥炉内に２本の加熱ロールを配し、このロール間
に張った鏡面の金属ベルト上に３層Ｔダイから樹脂液を
供給し、キャスティングする設備に、上記樹脂液を■−
■−■の３層で、乾燥フィルム厚さが５−１５＝５μに
なる比率でギヤポンプによって３層ダイに供給し、ベル
ト表面を７５°Ｃに、熱風を９８℃に制御し、炉内滞留
時間３分で連続的にフィルム化した。Two heating rolls are arranged in a hot air drying oven, and the resin liquid is supplied from a three-layer T-die onto a mirror-finished metal belt stretched between the rolls, and the resin liquid is transferred to casting equipment.
The three layers of ■-■ are supplied to the three-layer die using a gear pump at a ratio of dry film thickness of 5-15=5μ, the belt surface is controlled at 75°C, the hot air is controlled at 98°C, and the air remains in the furnace. Continuous film formation took 3 minutes.
得られたフィルムは全厚さ２５μ、平均含水率４．３％
で、両面共に全面が白色で、断面を光学顕微鏡で観察し
た結果、樹脂液■に加えたチタンホワイトは中央層には
みられず、均一な３層フィルムであった。The resulting film had a total thickness of 25μ and an average moisture content of 4.3%.
The entire surface of both sides was white, and when the cross section was observed under an optical microscope, the titanium white added to the resin solution (1) was not seen in the center layer, and it was found to be a uniform three-layer film.
このフィルムを引き続きエンボッシングカレンダー（３
０メツシユ格子状、点凸版、凹凸差３００μのエンボス
ロール）でロール温度７０℃、ロール線圧７０ｋｇ／ｃ
ｏでエンボス加工し、みかけ厚さ８０μのフィルムを得
た。Continue applying this film to an embossing calendar (3
0 mesh lattice, dot relief, embossing roll with unevenness difference of 300μ), roll temperature 70℃, roll linear pressure 70kg/c
The film was embossed with o to obtain a film with an apparent thickness of 80 μm.
得られたフィルムの物性を下記に示す評価方法により測
定した。その結果を表−１に示す。The physical properties of the obtained film were measured by the evaluation method shown below. The results are shown in Table-1.
く評価方法〉
フ ルム １ の′
得られたフィルムを２０℃、６５％ＲＨ？−Ｍ４ＢＲ間
保存後、オートグラフ〔■島津製作所製〕で引っ張り試
験をし、破断強度、破断伸度を測定した。Evaluation method: Film 1' The obtained film was heated at 20°C and 65% RH. -M4BR After storage, a tensile test was conducted using an Autograph (manufactured by Shimadzu Corporation) to measure breaking strength and breaking elongation.
フ ルム （２の゛
得られたフィルムを８ｃａ＋Ｘ９ｃｍにカットし、２枚
重ねにして３辺を５ａ＋ｍ幅でヒートシールし、直鎖ア
ルキルベンゼンスルホン酸ソーダ、アルキル硫酸エステ
ルソーダ塩、ポリオキシエチレンアルキルエーテル（ア
ルキル部分の炭素数１２〜１３、エチレンオキシド付加
モル数ｌＯ）、ゼオライト、ソーダ灰、メタケイ酸ソー
ダから成る、かさ密度０．７ｇ／ｃｃの粉末洗剤３０ｇ
を充填し、袋内の空気を押し出し、残る一辺も５ＩＩＩ
Ｉ１幅でヒートシールして、個装洗浄剤サンプルを得た
。これを５℃、４０％ＲＨに４８時間保存後、同環境で
１ｍの高さからコンクリート上に繰り返し落下し、破袋
するまでの落下回数をサンプル１０個の平均値で示す。Film (Step 2) Cut the obtained film into 8ca+9cm, stack two sheets and heat-seal the three sides with a width of 5a+m. 30 g of powdered detergent with a bulk density of 0.7 g/cc, consisting of 12 to 13 carbon atoms in the alkyl moiety, 10 moles of ethylene oxide added, zeolite, soda ash, and sodium metasilicate.
Fill the bag, push out the air inside the bag, and fill the remaining side with 5III
Individually packaged cleaning agent samples were obtained by heat sealing with a width of I1. After storing this at 5° C. and 40% RH for 48 hours, it was repeatedly dropped onto concrete from a height of 1 m in the same environment, and the number of drops until the bag broke is shown as the average value of 10 samples.
盈水旦邊立
４ＯＩｔ型洗濯機（■東芝製、銀河、２．８に、洗い）
に１０℃の水道水４０１を入れ、上記個装洗浄剤サンプ
ルを投入すると共に撹拌し、サンプルが破袋して洗剤が
水に放出される迄の時間（秒）を測定した。更に５分間
撹拌を続けた後、槽内の水を１２メツシユの金Ｓ／１４
１８０ｃｍ”面を静かに通過させ、槽内に付着している
フィルム片があれば水で静かに落とし、同じ金網を通過
させ、金網に残ったフィルム量を不溶分として網の目数
で表示した。Yeosui Danbeen 4OIt type washing machine (■ Toshiba, Galaxy, 2.8, wash)
Tap water 401 at 10° C. was added to the container, and the individual detergent samples were added thereto and stirred, and the time (seconds) required for the sample to break and the detergent to be released into the water was measured. After continuing stirring for another 5 minutes, the water in the tank was mixed with 12 mesh of gold S/14.
180cm'' surface, and if there were any film fragments attached to the tank, they were gently removed with water, passed through the same wire mesh, and the amount of film remaining on the wire mesh was expressed as insoluble content by the number of meshes. .
璽１」りし九−
上記個装洗浄剤サンプルを４０°Ｃ１８０％ＲＨに３０
日保存後、冷水可溶性を測定した。Seal 1" Rishiku - The above individually packaged cleaning agent sample was heated to 40°C 180% RH for 30 minutes.
After storage for days, cold water solubility was measured.
−ζ：」」仁−記法
幅５ｃｍ、長さ３０ｃｍのフィルムの一端を固定し、他
端に２００ｇの荷重をかけた状態で長さの中間部を全幅
にわたって、シール幅５ｍｓでヒートシールした時のシ
ール近傍の伸びを測定し、ｌｌ１１で表示した〔ヒート
シールの条件（温度、時間、圧力）は荷重をかけないで
ヒートシールした部分を剥離した時、凝集破壊する完全
融着条件で行う〕。-ζ:'''' Ren-notation When one end of a film with a width of 5 cm and a length of 30 cm is fixed, and a load of 200 g is applied to the other end, the middle part of the length is heat-sealed over the entire width with a sealing width of 5 ms. The elongation near the seal was measured and expressed as ll11 [Heat sealing conditions (temperature, time, pressure) were performed under complete fusion conditions that caused cohesive failure when the heat sealed part was peeled off without applying any load] .
プ旦ヱ土之五性
上記個装洗浄剤サンプルを積み重ね、３０’Ｃ１８０％
ＲＨに３０日間保存後、サンプル間を離した時の状態を
ランク分けした。Stack the above individually packaged cleaning agent samples, 30'C180%
After being stored in RH for 30 days, the samples were ranked according to their condition when separated.
◎：フィルムの癒着全くなし。◎: No adhesion of film at all.
Ｏ：フィルムの癒着は少しあるが容易に離れる。O: There is some adhesion of the film, but it is easily separated.
Δ：フィルムの癒着あり、離れるがフィルムが少し伸び
る。Δ: There is adhesion of the film, it separates but the film stretches a little.
×：フィルムが癒着し、離す時破れる。×: The film adheres to each other and is torn when released.
実施例２
実施例１の部分鹸化ＰＶＡの代わりに、イタコン酸変性
ＰＶＡ （■クラレ製、ＰＶＡ−ＫＭｌｌＢ ？鹸化度
９７．７ｍｏ１％、４％水溶液粘度３０．４ｃｐｓ （
ＪＩＳＫ−６７２６−１９７７に準じて測定））を用い
、実施例１と同様に調製して樹脂液■を得た。Example 2 In place of the partially saponified PVA of Example 1, itaconic acid-modified PVA (PVA-KMllB, manufactured by Kuraray) Saponification degree 97.7 mo1%, 4% aqueous solution viscosity 30.4 cps (
Resin liquid (2) was prepared in the same manner as in Example 1 using the method (measured according to JISK-6726-1977).
実施例１と同設備にて樹脂液■−■−■の３層で、乾燥
フィルム厚さが２−２１−２μになる比率でギヤポンプ
によって３層ダイに供給し、ベルト表面を７５℃に、熱
風を９８℃に制御し、炉内滞留時間３分で連続的にフィ
ルム化した。得られたフィルムは全厚さ２５μ、平均含
水率４．９％で両面共に全面が白色で、樹脂液■に加え
たチタンホワイトは中央層にみられず、均一な３層フィ
ルムであった。Using the same equipment as in Example 1, three layers of resin liquid ■-■-■ were supplied to a three-layer die using a gear pump at a ratio that gave a dry film thickness of 2-21-2μ, and the belt surface was heated to 75°C. The hot air was controlled at 98° C., and the film was continuously formed with a residence time in the furnace of 3 minutes. The resulting film had a total thickness of 25 μm, an average water content of 4.9%, and was completely white on both sides. The titanium white added to the resin solution (2) was not seen in the center layer, and it was a uniform three-layer film.
このフィルムを引き続きエンボッランクカレンダー（３
０メツシユ格子状、点凸版、凹凸差３００μのエンボス
ロール）でロール温度７０°Ｃ１０−ル線圧７０ｋｇ／
ｃ請でエンボス加工し、みかけ厚さ８０μのフィルムを
得た。Continue to use this film in the Emborank Calendar (3
0 mesh lattice, dot relief, embossing roll with unevenness difference of 300μ), roll temperature 70°C, 10-le linear pressure 70kg/
It was embossed with a cylindrical stamp to obtain a film with an apparent thickness of 80 μm.
このフィルムを実施例１と同様に評価した。This film was evaluated in the same manner as in Example 1.
結果を表−１に示す。The results are shown in Table-1.
実施例３
実施例１と同じ樹脂液を用い、同じ設備で、但し２層ダ
イを用い、樹脂液■−■の２層で、乾燥フィルム厚さが
５−２０μになる比率でギヤポンプによって２層ダイに
供給し、ベルト表面を７５℃に、熱風を９８°Ｃに制御
し、炉内滞留時間３分で連続的にフィルム化した。得ら
れたフィルムは全厚さ２５μ、平均含水率４．０％で一
方の面全面が白色で、樹脂液■に加えたチタンホワイト
は他方の面にみられず、均一な２層フィルムであった。Example 3 Using the same resin liquid as in Example 1, using the same equipment but using a two-layer die, two layers of resin liquid ■-■ were formed by a gear pump at a ratio of 5-20 μm in dry film thickness. The mixture was supplied to a die, and the belt surface was controlled at 75° C., the hot air was controlled at 98° C., and a film was continuously formed with a residence time in the furnace of 3 minutes. The obtained film had a total thickness of 25μ, an average moisture content of 4.0%, and one side was entirely white, and the titanium white added to the resin solution (■) was not seen on the other side, making it a uniform two-layer film. Ta.
このフィルムを引き続きエンボッランクカレンダー（３
０メツシユ格子状、点凸版、凹凸差３００μのエンボス
ロール）でロール温度８０″０１０−ル線圧７０ｋｇ／
ｃａ＋でエンボス加工し、みかけ厚さ９０μのフィルム
を得た。Continue to use this film in the Emborank Calendar (3
0 mesh lattice, dot relief, embossing roll with unevenness difference of 300μ), roll temperature 80″010-le linear pressure 70kg/
It was embossed with ca+ to obtain a film with an apparent thickness of 90 μm.
このフィルムを実施例１と同様に評価した。This film was evaluated in the same manner as in Example 1.
但し、個装洗浄剤サンプルは洗浄剤と接触する側にＰ２
Ｏ層がくるように、ヒートシール性はＰＲＯ層同士が融
着するように組み合わせて使用した。However, for individually packaged cleaning agent samples, P2 is placed on the side that comes into contact with the cleaning agent.
Heat-sealability was used in combination so that the PRO layers were fused to each other so that the O layer was aligned.
結果を表−１に示す。The results are shown in Table-1.
実施例４
実施例１のエンボス加工前のフラットフィルムで実施例
１と同様に性能を評価した。Example 4 Performance was evaluated in the same manner as in Example 1 using the flat film of Example 1 before embossing.
結果を表−１に示す。The results are shown in Table-1.
実施例５
実施例１の部分鹸化ＰＶＡの代わりに、重合度５００、
鹸化度８８．４＋＋ｏ１％の部分鹸化ｐｖ＾を用い、実
施例１と同様に調製して樹脂液■を得た。Example 5 In place of the partially saponified PVA of Example 1, the degree of polymerization was 500,
A partially saponified pv^ with a degree of saponification of 88.4++o1% was used and prepared in the same manner as in Example 1 to obtain a resin liquid (2).
実施例１と同設備にて樹脂液■−■−■の３層で、乾燥
フィルム厚さが５−１５−５μになる比率でギヤポンプ
によって３層ダイに供給し、ベルト表面を７５℃に、熱
風を９８°Ｃに制御し、炉内滞留時間３分で連続的にフ
ィルム化した。得られたフィルムは全厚さ２５μ、平均
含水率４．８％で両面共に全面が白色で、樹脂液■に加
えたチタンホワイトは中央層にみられず、均一な３層フ
ィルムであった。Using the same equipment as in Example 1, three layers of resin liquid ■-■-■ were supplied to a three-layer die using a gear pump at a ratio that gave a dry film thickness of 5-15-5μ, and the belt surface was heated to 75°C. The hot air was controlled at 98°C, and the film was continuously formed with a residence time in the furnace of 3 minutes. The resulting film had a total thickness of 25 μm, an average water content of 4.8%, and was completely white on both sides. The titanium white added to the resin solution (1) was not seen in the center layer, and it was a uniform three-layer film.
このフィルムを引き続きエンボッシングカレンダー（３
０メツシユ格子状、点凸版、凹凸差３００μのエンボス
ロール）でロール温度７０℃、ロール線圧７０ｋｇ／ｃ
＋＊でエンボス加工し、みかけ厚さ８０μのフィルムを
得た。Continue applying this film to an embossing calendar (3
0 mesh lattice, dot relief, embossing roll with unevenness difference of 300μ), roll temperature 70℃, roll linear pressure 70kg/c
Embossed with +* to obtain a film with an apparent thickness of 80 μm.
このフィルムを実施例１と同様に評価した。This film was evaluated in the same manner as in Example 1.
結果を表−１に示す。The results are shown in Table-1.
比較例１
樹脂液■を用い、実施例１と同じ設備で、但し単層ダイ
を用い、乾燥フィルムで２５μになるようギヤポンプに
よって単層ダイに供給し、ベルト表面を７５℃に、熱風
を９８℃に制御し、炉内滞留時間３分で連続的にフィル
ム化した。得られたフィルムは全厚さ２５μ、平均含水
率４．８％の均一なフィルムであった。Comparative Example 1 Resin liquid ■ was used in the same equipment as in Example 1, but a single-layer die was used, and the dry film was supplied to the single-layer die by a gear pump so that the film had a thickness of 25μ, the belt surface was heated to 75℃, and hot air was heated to 98℃. The temperature was controlled at 0.degree. C., and the film was continuously formed with a residence time in the furnace of 3 minutes. The resulting film was a uniform film with a total thickness of 25 μm and an average moisture content of 4.8%.
このフィルムを引き続きエンボッシングカレンダー（３
０メツシユ格子状、点凸版、凹凸差３００μのエンボス
ロール）でロール温度９５°Ｃ１０−ル線圧５５ｋｇ／
ｃ−でエンボス加工し、みかけ厚さ９０μのフィルムを
得た。Continue applying this film to an embossing calendar (3
0 mesh lattice, dot relief, embossing roll with unevenness difference of 300μ), roll temperature 95°C, 10-le linear pressure 55kg/
Embossed with c- to obtain a film with an apparent thickness of 90μ.
このフィルムを実施例１と同様に評価した。This film was evaluated in the same manner as in Example 1.
結果を表−１に示す。The results are shown in Table-1.
比較例２
樹脂液■を用い、実施例１と同じ設備で、但し単層ダイ
を用い、乾燥フィルムで２５μになるようギヤポンプに
よって単層ダイに供給し、ベルト表面を７５℃に、熱風
を９８℃に制御し、炉内滞留時間３分で連続的にフィル
ム化した。得られたフィルムは全厚さ２５μ、平均含水
率４．０％の均一なフィルムであった。Comparative Example 2 Resin liquid ■ was used in the same equipment as in Example 1, but a single-layer die was used, and the dry film was supplied to the single-layer die by a gear pump so that the film had a thickness of 25 μm.The belt surface was heated to 75°C and hot air was heated to 98°C. The temperature was controlled at 0.degree. C., and the film was continuously formed with a residence time in the furnace of 3 minutes. The resulting film was a uniform film with a total thickness of 25 μm and an average moisture content of 4.0%.
このフィルムを実施例１と同様に評価した。This film was evaluated in the same manner as in Example 1.
結果を表−１に示す。The results are shown in Table-1.
比較例３
比較例１のエンボス加工前のフラットフィルムで性能を
評価した。Comparative Example 3 Performance was evaluated using the flat film of Comparative Example 1 before embossing.
結果を表−１に示す。The results are shown in Table-1.
比較例４
樹脂液■を用い、実施例１と同じ設備で、但し単層ダイ
を用い、乾燥フィルムで２５μになるようギヤポンプに
よって単層ダイに供給し、ベルト表面を７５℃に、熱風
を９８°Ｃに制御し、炉内滞留時間３分で連続的にフィ
ルム化した。得られたフィルムは全厚さ２５μ、平均含
水率４．６％の均一なフィルムであった。Comparative Example 4 Using resin liquid ■, using the same equipment as Example 1, but using a single-layer die, supplying the dry film to the single-layer die with a gear pump so that the dry film becomes 25μ, heating the belt surface to 75℃, and blowing hot air at 98℃. The film was continuously formed with a residence time in the furnace of 3 minutes while controlling the temperature at °C. The resulting film was a uniform film with a total thickness of 25 μm and an average moisture content of 4.6%.
このフィルムを引き続きエンボッシングカレンダー（３
０メツシユ格子状、点凸版、凹凸差３００μのエンボス
ロール）でロール温度９０℃、ロール線圧５５ｋｇ／ｃ
ｍでエンボス加工し、みかけ厚さ９０μのフィルムを得
た。Continue applying this film to an embossing calendar (3
0 mesh lattice, dot relief, embossing roll with unevenness difference of 300μ), roll temperature 90℃, roll linear pressure 55kg/c
Embossed with m to obtain a film with an apparent thickness of 90 μm.
このフィルムを実施例１と同様に評価した。This film was evaluated in the same manner as in Example 1.
結果を表−１に示す。The results are shown in Table-1.
表−１から、実施例１〜５のフィルムは比較例１〜４の
フィルムに比べ、「包装材としてのフィルム強度」、「
耐酸耐アルカリ等耐薬剤性」「高湿度時の非粘着性」、
「冷水可溶性」、「ヒートシール性」の全ての物性に優
れていることが明らかで、本発明の冷水可溶性多層フィ
ルムは使用時そのまま水に投入する製品の包装材等とし
て好適なフィルムである。From Table 1, the films of Examples 1 to 5 have a higher "film strength as a packaging material" than the films of Comparative Examples 1 to 4.
Acid resistance, alkali resistance, chemical resistance, non-stick properties at high humidity,
It is clear that the film is excellent in all the physical properties of "cold water solubility" and "heat sealability", and the cold water soluble multilayer film of the present invention is suitable as a packaging material for products that are directly poured into water during use.
Claims (1)
コール系樹脂と平均分子量１００００以上のポリエチレ
ンオキサイド樹脂とを積層させて成ることを特徴とする
冷水可溶性多層フィルム。 ２、フィルムがエンボス加工した包装材用である請求項
１記載の冷水可溶性多層フィルム。 ３、請求項１又は２記載の冷水可溶性多層フィルムで固
体洗浄剤を包装してなる個装洗浄剤。[Scope of Claims] 1. A cold water soluble multilayer film comprising a polyvinyl alcohol resin having a molecular weight of 18,000 to 110,000 and a polyethylene oxide resin having an average molecular weight of 10,000 or more. 2. The cold water soluble multilayer film according to claim 1, wherein the film is used for embossed packaging materials. 3. An individually packaged detergent comprising a solid detergent packaged in the cold water-soluble multilayer film according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26367188A JPH02108534A (en) | 1988-10-19 | 1988-10-19 | Laminated film soluble in cold water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26367188A JPH02108534A (en) | 1988-10-19 | 1988-10-19 | Laminated film soluble in cold water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02108534A true JPH02108534A (en) | 1990-04-20 |
Family
ID=17392727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26367188A Pending JPH02108534A (en) | 1988-10-19 | 1988-10-19 | Laminated film soluble in cold water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02108534A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL9100706A (en) * | 1990-05-02 | 1991-12-02 | Rhone Poulenc Agriculture | SOLUBLE PACKAGING. |
| US5139152A (en) * | 1990-07-18 | 1992-08-18 | Rhone-Poulenc Ag Company | Water dispersible gel formulations |
| WO1993000476A1 (en) * | 1991-06-20 | 1993-01-07 | Jujo Paper Co., Ltd. | Packaging material and methods of manufacturing and disposing of said material |
| US5280835A (en) * | 1990-05-02 | 1994-01-25 | Rhone-Poulenc Inc. | Laminated bags for containerization of toxic and hazardous materials |
| US5316688A (en) * | 1991-05-14 | 1994-05-31 | Ecolab Inc. | Water soluble or dispersible film covered alkaline composition |
| US5362532A (en) * | 1991-05-17 | 1994-11-08 | Air Products And Chemicals, Inc. | Water soluble multilayer film for packaging alkaline materials |
| TR27730A (en) * | 1991-04-05 | 1995-06-28 | Rhone Poulenc Agrochimie | Packaging for agrochemical materials. |
| US5429242A (en) * | 1990-07-18 | 1995-07-04 | Rhone-Poulenc Agriculture Ltd. | Laminated bags for containerization of toxic or hazardous materials |
| US5429874A (en) * | 1991-05-14 | 1995-07-04 | W. R. Grace & Co.-Conn. | Water soluble film |
| US6211129B1 (en) | 1991-05-14 | 2001-04-03 | Ecolab Inc. | Two part chemical concentrate |
| US6406797B1 (en) | 1990-05-17 | 2002-06-18 | Cryovac, Inc. | Coextruded packaging film |
| WO2016160449A1 (en) * | 2015-03-27 | 2016-10-06 | Rohm And Haas Company | Overcoated water-soluble films |
| JP2019006423A (en) * | 2017-06-21 | 2019-01-17 | 日本合成化学工業株式会社 | Medicine package and manufacturing method of medicine package |
-
1988
- 1988-10-19 JP JP26367188A patent/JPH02108534A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL9100706A (en) * | 1990-05-02 | 1991-12-02 | Rhone Poulenc Agriculture | SOLUBLE PACKAGING. |
| FR2665889A1 (en) * | 1990-05-02 | 1992-02-21 | Rhone Poulenc Agriculture | PACKAGING CONTAINING DANGEROUS CHEMICAL SUBSTANCES AND PROCESS FOR THEIR PRODUCTION. |
| BE1003800A5 (en) * | 1990-05-02 | 1992-06-16 | Rhone Poulenc Agriculture | Packaging containing dangerous chemicals and method for the production. |
| GR910100175A (en) * | 1990-05-02 | 1992-07-30 | Rhone Poulenc Agriculture | Containerization system for agrochemicals and the like |
| NL9300911A (en) * | 1990-05-02 | 1993-10-01 | Rhone Poulenc Agriculture | SOLUBLE PACKAGING. |
| US5280835A (en) * | 1990-05-02 | 1994-01-25 | Rhone-Poulenc Inc. | Laminated bags for containerization of toxic and hazardous materials |
| US5624034A (en) * | 1990-05-02 | 1997-04-29 | Rhone-Poulenc Ag | Laminated bags for containerization of toxic or hazardous materials |
| US6406797B1 (en) | 1990-05-17 | 2002-06-18 | Cryovac, Inc. | Coextruded packaging film |
| US5139152A (en) * | 1990-07-18 | 1992-08-18 | Rhone-Poulenc Ag Company | Water dispersible gel formulations |
| US5429242A (en) * | 1990-07-18 | 1995-07-04 | Rhone-Poulenc Agriculture Ltd. | Laminated bags for containerization of toxic or hazardous materials |
| TR27730A (en) * | 1991-04-05 | 1995-06-28 | Rhone Poulenc Agrochimie | Packaging for agrochemical materials. |
| US5429874A (en) * | 1991-05-14 | 1995-07-04 | W. R. Grace & Co.-Conn. | Water soluble film |
| US5316688A (en) * | 1991-05-14 | 1994-05-31 | Ecolab Inc. | Water soluble or dispersible film covered alkaline composition |
| US6211129B1 (en) | 1991-05-14 | 2001-04-03 | Ecolab Inc. | Two part chemical concentrate |
| US5362532A (en) * | 1991-05-17 | 1994-11-08 | Air Products And Chemicals, Inc. | Water soluble multilayer film for packaging alkaline materials |
| WO1993000476A1 (en) * | 1991-06-20 | 1993-01-07 | Jujo Paper Co., Ltd. | Packaging material and methods of manufacturing and disposing of said material |
| WO2016160449A1 (en) * | 2015-03-27 | 2016-10-06 | Rohm And Haas Company | Overcoated water-soluble films |
| CN107428974A (en) * | 2015-03-27 | 2017-12-01 | 罗门哈斯公司 | The water-solubility membrane of outer coating |
| JP2018510792A (en) * | 2015-03-27 | 2018-04-19 | ローム アンド ハース カンパニーＲｏｈｍ Ａｎｄ Ｈａａｓ Ｃｏｍｐａｎｙ | Overcoated water-soluble film |
| JP2019006423A (en) * | 2017-06-21 | 2019-01-17 | 日本合成化学工業株式会社 | Medicine package and manufacturing method of medicine package |
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