JPH05239291A - Heat-resistant wrapping film - Google Patents
Heat-resistant wrapping filmInfo
- Publication number
- JPH05239291A JPH05239291A JP2173691A JP2173691A JPH05239291A JP H05239291 A JPH05239291 A JP H05239291A JP 2173691 A JP2173691 A JP 2173691A JP 2173691 A JP2173691 A JP 2173691A JP H05239291 A JPH05239291 A JP H05239291A
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- Prior art keywords
- heat
- methyl
- film
- pentene
- polymer
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐熱ラップフィルムに
関し、特に、耐熱性に優れるとともに、柔軟性および粘
着性に優れる耐熱ラップフィルムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-resistant wrap film, and more particularly to a heat-resistant wrap film having excellent heat resistance and flexibility and adhesiveness.
【０００２】[0002]
【０００３】近年、食品の保存、調理等に使用される包
装材料として、ラップフィルムが使用されている。この
従来のラップフィルムは、ポリ塩化ビニルやポリ塩化ビ
ニリデンの薄膜からなるものであるため、耐熱温度が、
１４０℃前後のものである。In recent years, a wrap film has been used as a packaging material used for storing and cooking foods. Since this conventional wrap film is made of a thin film of polyvinyl chloride or polyvinylidene chloride, the heat resistance temperature is
It is around 140 ° C.
【０００４】しかし、近年、このラップフィルムの用途
の拡大に伴ない、より高温での使用にも耐え得るもの、
すなわち耐熱性に優れるものが要望されている。However, in recent years, with the expansion of the use of this wrap film, one that can withstand use at higher temperatures,
That is, a material having excellent heat resistance is desired.
【０００５】ところで、４−メチル−１−ペンテン系重
合体は、融点が２２０〜２４０℃であり、耐熱性に優れ
ることが知られている。そこで、この４−メチル−１−
ペンテン系重合体をフィルムに成形すれば、耐熱性に優
れるラップフィルムが得られることが期待される。By the way, it is known that the 4-methyl-1-pentene polymer has a melting point of 220 to 240 ° C. and is excellent in heat resistance. Therefore, this 4-methyl-1-
When a pentene polymer is formed into a film, it is expected that a wrap film having excellent heat resistance can be obtained.
【０００６】[0006]
【発明が解決しようとする課題】しかし、４−メチル−
１−ペンテン系重合体のフィルムは、柔軟性が不十分で
あり、またラップフィルムとして使用する場合に重要な
性質である粘着性も不十分なものであった。However, 4-methyl-
The 1-pentene polymer film had insufficient flexibility, and also had insufficient tackiness, which is an important property when used as a wrap film.
【０００７】そこで本発明は、前記４−メチル−１−ペ
ンテン系重合体の優れた耐熱性を有するとともに、柔軟
性、粘着性および透明性に優れた耐熱ラップフィルムを
提供することにある。Therefore, the present invention is to provide a heat-resistant wrap film having excellent heat resistance of the 4-methyl-1-pentene polymer and excellent in flexibility, tackiness and transparency.
【０００８】[0008]
【課題を解決するための手段】本発明者らは、前記課題
を解決するため、鋭意研究の結果、４−メチル−１−ペ
ンテン系重合体と液状ブテン系重合体とを、特定の割合
で含む樹脂組成物を成形してなるフィルムが、耐熱性に
優れるとともに、柔軟性および粘着性にも優れ、耐熱ラ
ップフィルムとして好適であることを見出し、本発明に
到達した。In order to solve the above-mentioned problems, the inventors of the present invention have conducted intensive studies and found that 4-methyl-1-pentene-based polymer and liquid butene-based polymer in a specific ratio. The present inventors have found that a film obtained by molding a resin composition containing the same is excellent in heat resistance and flexibility and adhesiveness, and is suitable as a heat-resistant wrap film, and thus arrived at the present invention.
【０００９】すなわち、本発明は、前記課題を解決する
ために、４−メチル−１−ペンテン系重合体９９〜８５
重量部と、１００℃における動粘度が２〜５０００ｃＳ
ｔである液状ブテン系重合体１〜１５重量部とを含む樹
脂組成物を成形してなる耐熱ラップフィルムを提供する
ものである。That is, according to the present invention, in order to solve the above-mentioned problems, 4-methyl-1-pentene polymers 99 to 85 are used.
Parts by weight and kinematic viscosity at 100 ° C. is 2 to 5000 cS
The present invention provides a heat-resistant wrap film obtained by molding a resin composition containing 1 to 15 parts by weight of a liquid butene-based polymer of t.
【００１０】前記耐熱ラップフィルムのなかでも、前記
樹脂組成物を成形してなる、厚さが５〜２０μｍである
ものが好ましい。Among the heat-resistant wrap films, those formed by molding the resin composition and having a thickness of 5 to 20 μm are preferable.
【００１１】以下、本発明の耐熱ラップフィルムについ
て詳細に説明する。The heat-resistant wrap film of the present invention will be described in detail below.
【００１２】本発明の耐熱ラップフィルムを構成する必
須成分である４−メチル−１−ペンテン系重合体は、４
−メチル−１−ペンテンを主成分とする重合体であり、
例えば、４−メチル−１−ペンテンの単独重合体、４−
メチル−１−ペンテンと、４−メチル−１−ペンテン以
外のα−オレフィンとの共重合体が挙げられる。４−メ
チル−１−ペンテン以外のα−オレフィンとしては、例
えば、エチレン、プロピレン、１−ブテン、１−ヘプテ
ン、１−ヘキセン、１−オクテン、１−デセン、１−ド
デセン、１−テトラデセン、１−ヘキサデセン、１−オ
クタデセン、１−エイコセン等の炭素数２〜２０のα−
オレフィン等が挙げられ、４−メチル−１−ペンテン系
重合体中にこれらのα−オレフィンは１種単独でも２種
以上が含まれていてもよい。４−メチル−１−ペンテン
系重合体が、これらのα−オレフィンを含む場合、その
含有量は、通常、１〜１０重量％程度である。The 4-methyl-1-pentene polymer, which is an essential component of the heat-resistant wrap film of the present invention, is 4
Is a polymer whose main component is -methyl-1-pentene,
For example, 4-methyl-1-pentene homopolymer, 4-
A copolymer of methyl-1-pentene and an α-olefin other than 4-methyl-1-pentene can be mentioned. As the α-olefin other than 4-methyl-1-pentene, for example, ethylene, propylene, 1-butene, 1-heptene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1 -Hexadecene, 1-octadecene, 1-eicosene, etc. α- having 2 to 20 carbon atoms
Examples thereof include olefins, and these α-olefins may be used alone or in combination of two or more in the 4-methyl-1-pentene-based polymer. When the 4-methyl-1-pentene polymer contains these α-olefins, the content thereof is usually about 1 to 10% by weight.
【００１３】また、この４−メチル−１−ペンテン系重
合体のデカリン溶媒中、１３５℃で測定される極限粘度
は、通常、１．０〜３．０程度であり、好ましくは２．
０〜２．５程度である。The intrinsic viscosity of this 4-methyl-1-pentene polymer measured in a decalin solvent at 135 ° C. is usually about 1.0 to 3.0, preferably 2.
It is about 0 to 2.5.
【００１４】本発明の耐熱ラップフィルムを構成するも
う１つの必須成分である液状ブテン系重合体は、イソブ
チレンを主成分とする重合体であり、例えば、イソブチ
レンの単独重合体、あるいはイソブチレンと、イソブチ
レン以外の他のα−オレフィンとの共重合体などが挙げ
られる。このイソブチレン以外の他のα−オレフィンと
しては、例えば、１−ブテン、２−ブテン、ブタジエン
等が挙げられる。これらのα−オレフィンは、液状ブテ
ン系重合体中に１種でも２種以上が含まれていてもよ
い。The liquid butene-based polymer which is another essential component constituting the heat-resistant wrap film of the present invention is a polymer containing isobutylene as a main component. For example, isobutylene homopolymer or isobutylene and isobutylene. Other examples include copolymers with other α-olefins. Examples of the α-olefin other than isobutylene include 1-butene, 2-butene, butadiene and the like. These α-olefins may be contained in the liquid butene-based polymer either individually or in combination of two or more.
【００１５】この液状ブテン系重合体は、１００℃にお
ける動粘度が２〜５０００ｃＳｔのものであり、また成
形性と品質に優れた耐熱ラップフィルムが得られる点
で、動粘度が５０〜１０００ｃＳｔのものが好ましい。This liquid butene polymer has a kinematic viscosity of 2 to 5000 cSt at 100 ° C., and a kinematic viscosity of 50 to 1000 cSt in terms of obtaining a heat-resistant lap film excellent in moldability and quality. Is preferred.
【００１６】本発明の耐熱ラップフィルムは、前記４−
メチル−１−ペンテン系重合体と液状ブテン系重合体と
を含む樹脂組成物を成形してなるフィルムである。The heat-resistant wrap film of the present invention comprises the above-mentioned 4-
It is a film formed by molding a resin composition containing a methyl-1-pentene polymer and a liquid butene polymer.
【００１７】この樹脂組成物における４−メチル−１−
ペンテン系重合体と、液状ブテン系重合体との含有割合
は、耐熱性および柔軟性に優れ、かつ粘着性および透明
性に優れる耐熱ラップフィルムが得られる点で、４−メ
チル−１−ペンテン系重合体９９〜８５重量部に対し
て、液状ブテン系重合体１〜１５重量部の割合であり、
中でも粘着性と透明性のバランスが優れる耐熱ラップフ
ィルムが得られる点で、４−メチル−１−ペンテン系重
合体９７〜９２重量部に対して、液状ブテン系重合体３
〜８重量部の割合であるのが好ましい。4-methyl-1- in this resin composition
The content ratio of the pentene-based polymer and the liquid butene-based polymer is 4-methyl-1-pentene-based in that a heat-resistant wrap film having excellent heat resistance and flexibility, and excellent adhesiveness and transparency can be obtained. The proportion of the liquid butene polymer is 1 to 15 parts by weight with respect to 99 to 85 parts by weight of the polymer,
Among them, in terms of obtaining a heat-resistant wrap film having an excellent balance of tackiness and transparency, the liquid butene-based polymer 3 is added to 97 to 92 parts by weight of the 4-methyl-1-pentene-based polymer.
It is preferably from 8 to 8 parts by weight.
【００１８】また、この樹脂組成物は、酸化防止剤、着
色剤、紫外線吸収剤、無機充填剤、帯電防止剤、防曇
剤、耐熱安定剤等を必要に応じて含んでいてもよい。Further, the resin composition may contain an antioxidant, a colorant, an ultraviolet absorber, an inorganic filler, an antistatic agent, an antifogging agent, a heat stabilizer, etc., if necessary.
【００１９】本発明の耐熱ラップフィルムの製造は、特
に限定されないが、例えば、前記樹脂組成物を構成する
各成分をそれぞれ所定の割合で別個に押出機に供給し、
あるいは予め各成分を混合して樹脂組成物を調製し、こ
れを押出機に供給して、溶融、混練して、Ｔ−ダイ、チ
ューブ等の適当な成形用ダイから押出して、フィルムに
成形することができる。The production of the heat-resistant wrap film of the present invention is not particularly limited, but, for example, each component constituting the resin composition is separately fed to the extruder at a predetermined ratio,
Alternatively, each component is mixed in advance to prepare a resin composition, which is supplied to an extruder, melted and kneaded, and extruded from an appropriate molding die such as a T-die or a tube to form a film. be able to.
【００２０】押出機における加熱温度は、通常、２４０
〜３００℃程度である。The heating temperature in the extruder is usually 240
It is about 300 ° C.
【００２１】以上のようにして得られる本発明の耐熱ラ
ップフィルムの中でも、エージング後の粘着力が１〜７
ｇ／８ｃｍであり、かつ厚さが８〜１５μｍであるもの
は、実用操作性が良好である。Among the heat-resistant wrap films of the present invention obtained as described above, the adhesive strength after aging is 1 to 7
Those having g / 8 cm and a thickness of 8 to 15 μm have good practical operability.
【００２２】ここで、本発明でいう「粘着力」とは、２
枚のフィルムの１８０°剥離強度のことをいい、具体的
には、後記の粘着力の測定方法による測定値で表す。The term "adhesive strength" as used in the present invention means 2
It means the 180 ° peel strength of a sheet of film, and it is specifically expressed by the value measured by the method for measuring the adhesive force described below.
【００２３】本発明の耐熱ラップフィルムは、耐熱性、
柔軟性、粘着性および透明性に優れるため、例えば、高
周波加熱時のラップフィルム等の用途に好適であり、特
に、耐熱性を要求される油性食品の再加熱および調理等
の用途に好適である。The heat-resistant wrap film of the present invention has heat resistance,
Since it is excellent in flexibility, adhesiveness and transparency, it is suitable for use as, for example, a wrap film during high frequency heating, and particularly suitable for applications such as reheating and cooking of oily foods that require heat resistance. ..
【００２４】[0024]
【実施例】以下、実施例および比較例により本発明を具
体的に説明するが、本発明は、これらの実施例に限定さ
れるものではない。 （実施例１〜６、比較例１）各例において、ポリ４−メ
チル−１−ペンテン（三井石油化学工業株式会社製、Ｍ
Ｘ０２１）と、液状ポリブテン（Ａ）（日本石油化学
（株）製、ＨＶ３００、動粘度（１００℃）：６３０ｃ
Ｓｔ）および液状ポリブテン（Ｂ）（日本石油化学
（株）製、ＨＶ５０、動粘度（１００℃）：１２０ｃＳ
ｔ）を、表１に示す配合処方で配合してなる樹脂混合物
を、押出機に供給し、成形温度２８０℃で溶融、混練し
て、Ｔ−ダイから押出して、表１に示す厚さで、幅３０
０ｍｍのラップフィルムを得た。EXAMPLES The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to these examples. (Examples 1 to 6 and Comparative Example 1) In each example, poly-4-methyl-1-pentene (Mitsui Petrochemical Industry Co., Ltd., M
X021) and liquid polybutene (A) (manufactured by Nippon Petrochemical Co., Ltd., HV300, kinematic viscosity (100 ° C.): 630c
St) and liquid polybutene (B) (manufactured by Nippon Petrochemical Co., Ltd., HV50, kinematic viscosity (100 ° C.): 120 cS
The resin mixture prepared by blending t) with the formulation shown in Table 1 is supplied to an extruder, melted and kneaded at a molding temperature of 280 ° C., and extruded from a T-die at a thickness shown in Table 1. , Width 30
A 0 mm wrap film was obtained.
【００２５】得られたラップフィルムの降伏点強度、破
断点強度、伸び、モジュラス値、引裂強度および曇価、
ならびに粘着力および耐熱温度を下記の方法にしたがっ
て測定した。結果を表１に示す。降伏点強度、破断点強度、伸び ＡＳＴＭ Ｄ８８２に準じて行なった。引裂強度 ＡＳＴＭ Ｄ１９２２に準じて行なった。 （エルメンドルフ引裂試験法）曇価 ＡＳＴＭ Ｄ１００３に準じて行なった。光沢度 ＡＳＴＭ Ｄ５２３に準じて、６０°で行なった。粘着力 成形後、４０℃で１週間エージングした、幅８ｃｍ×長
さ１０ｃｍのフィルム２枚を重ねてプレスロールにかけ
て、ロール間圧力：０．２kg/cm2で、片側一端から幅２
ｃｍを残して密着させて、試験片を作成した。The yield strength, the breaking strength, the elongation, the modulus value, the tear strength and the haze value of the obtained wrap film,
The adhesive strength and heat resistant temperature were measured according to the following methods. The results are shown in Table 1. Yield point strength, breaking point strength, elongation Evaluated according to ASTM D882. Tear strength was measured according to ASTM D1922. (Elmendorf tear test method) The haze value was measured according to ASTM D1003. Glossiness It was performed at 60 ° according to ASTM D523. After pressure-sensitive adhesive molding, two films with a width of 8 cm and a length of 10 cm, which were aged at 40 ° C. for 1 week, were stacked and pressed on a roll, and the pressure between the rolls was 0.2 kg / cm 2 , and the width from one end was 2
A test piece was prepared by making the test piece adhere with leaving cm.
【００２６】次に、図１に示すように、試験片１の密着
されていない側のフィルム１ａの端部２を、支持台３に
固定された支持体４の端部５に両面テープで固定した。
さらに、温度：２３℃、湿度：５０％の雰囲気中で、試
験片１の密着されていない側のもう一方のフィルム１ｂ
の端部６に重り７を掛け、順次重りを替えて荷重を加え
ていき、試験片１の重ねあわせたフィルム１ａと１ｂが
相互に剥離して重り７が動き始める時の重量（ｇ／８ｃ
ｍ）を粘着力として測定した。Next, as shown in FIG. 1, the end portion 2 of the film 1a on the non-contact side of the test piece 1 is fixed to the end portion 5 of the support 4 fixed to the support base 3 with a double-sided tape. did.
Further, in the atmosphere of temperature: 23 ° C. and humidity: 50%, the other film 1b on the non-adhered side of the test piece 1
The weight 7 is applied to the end 6 of the test piece, the weights are sequentially changed, and the load is applied. The weight when the films 1a and 1b of the test piece 1 are separated from each other and the weight 7 starts to move (g / 8c
m) was measured as the adhesive strength.
【００２７】耐熱温度 図２に示すように、幅３ｃｍ×長さ１４ｃｍの耐熱ラッ
プフィルム１１の上端１２ａおよび下端１２ｂに、幅３
ｃｍ×長さ２．５ｃｍの板目紙１３ａおよび１３ｂのそ
れぞれを、重ね合わせて両面接着テープで接着して、試
験片を作成した。 Heat-resistant temperature As shown in FIG. 2, the width 3 cm is applied to the upper end 12a and the lower end 12b of the heat-resistant wrap film 11 having a width of 3 cm and a length of 14 cm.
cm x 2.5 cm length of each of the board papers 13a and 13b were overlapped and adhered with a double-sided adhesive tape to prepare a test piece.
【００２８】この試験片の上端１２ａを治具に固定し、
下端１２ｂに１０ｇの荷重をかけ、エアーオーブン中に
迅速に入れ、試料が切断するまで１時間毎に加熱温度を
５℃刻みで代えて加熱し、試料が切断されない最高の温
度を耐熱温度とした。The upper end 12a of this test piece was fixed to a jig,
A load of 10 g was applied to the lower end 12b, the sample was quickly placed in an air oven, and the heating temperature was changed every 5 hours until the sample was cut, in increments of 5 ° C., and the maximum temperature at which the sample was not cut was taken as the heat-resistant temperature. ..
【００２９】[0029]
【表１】 [Table 1]
【００３０】[0030]
【表２】 [Table 2]
【００３１】[0031]
【発明の効果】本発明の耐熱ラップフィルムは、従来の
ラップフィルムが１４０℃前後の耐熱温度を有している
のに対して、１９０〜１９５℃の高い耐熱温度を有する
耐熱性に優れるものである。そのため、本発明の耐熱ラ
ップフィルムは、従来のラップフィルムでは、到底使用
できなかった高温での使用が可能となり、用途の拡大等
が期待できるなど、実用的価値が大である。EFFECTS OF THE INVENTION The heat-resistant wrap film of the present invention has a high heat-resistant temperature of 190 to 195 ° C., while the conventional wrap film has a heat-resistant temperature of about 140 ° C. is there. Therefore, the heat-resistant wrap film of the present invention can be used at a high temperature, which cannot be used by the conventional wrap film, and is expected to be used in a wide range of applications.
【図１】実施例および比較例におけるフィルムの粘着力
の測定方法を説明する概念図。FIG. 1 is a conceptual diagram illustrating a method for measuring an adhesive force of a film in Examples and Comparative Examples.
【図２】実施例および比較例におけるフィルムの耐熱温
度の測定用の試験片を説明する図。FIG. 2 is a diagram illustrating a test piece for measuring a heat resistant temperature of a film in Examples and Comparative Examples.
１ 試験片 １ａ、１ｂ フィルム ２ フィルム１ａの端部 ３ 支持台 ４ 支持体 ５ 支持体４の端部 ６ フィルム１ｂの端部 ７ 重り １１ 耐熱ラップフィルム １２ａ 耐熱ラップフィルム１１の上端 １２ｂ 耐熱ラップフィルム１１の下端 １３ａ、１３ｂ 板目紙 DESCRIPTION OF SYMBOLS 1 Test piece 1a, 1b Film 2 Edge part of film 1a 3 Support stand 4 Support body 5 End part of support body 6 Edge part of film 1b 7 Weight 11 Heat-resistant wrap film 12a Top end of heat-resistant wrap film 11 12b Heat-resistant wrap film 11 Bottom edge 13a, 13b
───────────────────────────────────────────────────── フロントページの続き (72)発明者 加 藤 達 夫 山口県玖珂郡和木町和木六丁目１番２号 三井石油化学工業株式会社内 (72)発明者 山 本 昭 雄 山口県玖珂郡和木町和木六丁目１番２号 三井石油化学工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tatsuo Kato 6-1-2 Waki, Waki-cho, Kuga-gun, Yamaguchi Mitsui Petrochemical Industry Co., Ltd. (72) Inventor Akira Yamamoto Kuga-gun, Yamaguchi 6-1-2 Waki, Waki Town Mitsui Petrochemical Industry Co., Ltd.
Claims (2)
〜８５重量部と、１００℃における動粘度が２〜５００
０ｃＳｔである液状ブテン系重合体１〜１５重量部とを
含む樹脂組成物を成形してなる耐熱ラップフィルム。1. A 4-methyl-1-pentene polymer 99.
〜85 parts by weight and kinematic viscosity at 100 ° C. of 2 to 500
A heat-resistant wrap film obtained by molding a resin composition containing 1 to 15 parts by weight of a liquid butene-based polymer having 0 cSt.
５〜２０μｍである請求項１に記載の耐熱ラップフィル
ム。2. The heat-resistant wrap film according to claim 1, which is formed by molding the resin composition and has a thickness of 5 to 20 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3021736A JP3020623B2 (en) | 1991-02-15 | 1991-02-15 | Heat resistant wrap film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3021736A JP3020623B2 (en) | 1991-02-15 | 1991-02-15 | Heat resistant wrap film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05239291A true JPH05239291A (en) | 1993-09-17 |
| JP3020623B2 JP3020623B2 (en) | 2000-03-15 |
Family
ID=12063365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3021736A Expired - Lifetime JP3020623B2 (en) | 1991-02-15 | 1991-02-15 | Heat resistant wrap film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3020623B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013249387A (en) * | 2012-05-31 | 2013-12-12 | Mitsubishi Cable Ind Ltd | Methylpentene polymer composition and mandrel for producing hose |
| JP2014208797A (en) * | 2013-03-25 | 2014-11-06 | 三井化学株式会社 | 4-methyl-1-pentene copolymer composition |
-
1991
- 1991-02-15 JP JP3021736A patent/JP3020623B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013249387A (en) * | 2012-05-31 | 2013-12-12 | Mitsubishi Cable Ind Ltd | Methylpentene polymer composition and mandrel for producing hose |
| JP2014208797A (en) * | 2013-03-25 | 2014-11-06 | 三井化学株式会社 | 4-methyl-1-pentene copolymer composition |
| JP2018053262A (en) * | 2013-03-25 | 2018-04-05 | 三井化学株式会社 | 4-methyl-1-pentene copolymer composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3020623B2 (en) | 2000-03-15 |
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