JPH07286151A - Hot-melt composition - Google Patents
Hot-melt compositionInfo
- Publication number
- JPH07286151A JPH07286151A JP15152994A JP15152994A JPH07286151A JP H07286151 A JPH07286151 A JP H07286151A JP 15152994 A JP15152994 A JP 15152994A JP 15152994 A JP15152994 A JP 15152994A JP H07286151 A JPH07286151 A JP H07286151A
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- Prior art keywords
- mfr
- eva
- vinyl acetate
- weight
- hot melt
- 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.)
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- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、低温可撓性及び接着性
（凝集性）が改良されたホットメルト組成物に関する。FIELD OF THE INVENTION This invention relates to hot melt compositions having improved low temperature flexibility and adhesion (cohesiveness).
【０００２】[0002]
【従来の技術】エチレン・酢酸ビニル共重合体（以下Ｅ
ＶＡと呼ぶことがある）、粘着付与樹脂及びワックスか
らなるホットメルト接着剤は、包装、製本、合板、木工
などの分野で広く使用されている。この基本配合におい
て、エチレン・酢酸ビニル共重合体の配合は、特に低温
可撓性、接着性（凝集性）の付与に効果的であるが、溶
融粘度の上昇を来すなどの弊害を及ぼすため、実際の上
記分野にて使用されるホットメルト接着剤のエチレン・
酢酸ビニル共重合体成分としては、ＶＡ含有量の異なる
あるいはメルトフローレートの異なる２種類以上ＥＶＡ
を配合して、低温可撓性、接着性（耐寒接着性、耐熱接
着性）、溶融粘度等の各種性能上バランスのとれたホッ
トメルト接着剤としているのが実情である。2. Description of the Related Art Ethylene / vinyl acetate copolymer (hereinafter referred to as E
A hot melt adhesive composed of a tackifying resin and a wax is widely used in fields such as packaging, bookbinding, plywood, and woodworking. In this basic blending, the blending of ethylene / vinyl acetate copolymer is particularly effective for imparting low temperature flexibility and adhesiveness (cohesiveness), but causes adverse effects such as increase in melt viscosity. , Ethylene of hot melt adhesive actually used in the above fields
As the vinyl acetate copolymer component, two or more kinds of EVA having different VA contents or different melt flow rates are used.
In fact, it is a hot melt adhesive that is well-balanced in terms of various properties such as low-temperature flexibility, adhesiveness (cold-resistant adhesiveness, heat-resistant adhesiveness), and melt viscosity.
【０００３】例えば低温可撓性を付与させるためには比
較的ＶＡ含有量の高いＥＶＡを採用する傾向にあり、ま
た接着性（凝集性）を付与させるためには比較的メルト
フローレートの低いＥＶＡを採用する傾向にあり、一方
耐熱接着性を付与させるためには比較的ＶＡ含有量の低
いＥＶＡを採用する傾向にあり、また溶融粘度の低いホ
ットメルト接着剤を調製する場合にはメルトフローレー
トの高いＥＶＡを採用する等の種々の配合処方が考えら
れる。しかし、実際には従来のＥＶＡ同志の組合わせで
は低温可撓性、接着性（凝集性）等に関して、実用上必
ずしも満足すべき性能のホットメルト組成物が得られて
いないのが実情である。For example, there is a tendency to adopt EVA having a relatively high VA content for imparting low temperature flexibility, and EVA having a relatively low melt flow rate for imparting adhesiveness (cohesiveness). On the other hand, there is a tendency to adopt EVA having a relatively low VA content in order to impart heat resistant adhesiveness, and when preparing a hot melt adhesive having a low melt viscosity, a melt flow rate Various compounding prescriptions, such as adoption of high EVA, are possible. However, in reality, the combination of conventional EVAs has not provided a hot melt composition having satisfactory performance in practical use in terms of low-temperature flexibility, adhesiveness (cohesiveness) and the like.
【０００４】[0004]
【発明が解決しようとする課題】そのため、本発明者ら
は低温可撓性が良好で、かつ接着性（凝集性）の大幅な
向上が図れるホットメルト組成物を得るべく鋭意検討を
行った。Therefore, the present inventors have conducted earnest studies to obtain a hot melt composition which has good low-temperature flexibility and can significantly improve the adhesiveness (cohesiveness).
【０００５】その結果、通常のホットメルト接着剤用エ
チレン・酢酸ビニル共重合体と、それとＶＡ含有量及び
メルトフローレートが同一レベルで、かつ高融点である
特定のエチレン・酢酸ビニル共重合体とのブレンドを用
いることによりその目的が達成できることを知った。As a result, an ordinary ethylene / vinyl acetate copolymer for hot-melt adhesives and a specific ethylene / vinyl acetate copolymer having the same level of VA content and melt flow rate and a high melting point. It was found that the objective can be achieved by using the blend of.
【０００６】[0006]
【課題を解決するための手段】本発明は、少なくとも２
種のエチレン・酢酸ビニル共重合体からなり、１２５
℃、３２５ｇ荷重におけるメルトフローレート（ｇ／１
０分）を［ＭＦＲ］、酢酸ビニル含有量（重量％）を
［ＶＡ］、示差走査熱量計に基づく最大吸熱ピークを示
す温度（℃）を［ｍｐ］で表示するときに、［ＶＡ］が
１０〜４５、［ＭＦＲ］が０．０５〜２００のエチレン
・酢酸ビニル共重合体（Ａ）５〜９５重量％と、［Ｖ
Ａ］が２３〜５０、［ＭＦＲ］が０．１〜１５であり、
かつ［ｍｐ］が式 ［ｍｐ］＞１１２−５ log［ＭＦＲ］−１．４［ＶＡ］ を満足するエチレン・酢酸ビニル共重合体（Ｂ）９５〜
５重量％とからなるホットメルト組成物に関する。The present invention comprises at least two aspects.
Consisting of ethylene-vinyl acetate copolymer
Melt flow rate (g / 1
When 0 min) is displayed as [MFR], vinyl acetate content (wt%) is [VA], and temperature (° C.) at which the maximum endothermic peak based on a differential scanning calorimeter is displayed is [mp], [VA] is 10 to 45, 5 to 95% by weight of ethylene / vinyl acetate copolymer (A) having an [MFR] of 0.05 to 200, and [V
A] is 23 to 50, [MFR] is 0.1 to 15,
And ethylene-vinyl acetate copolymer (B) 95-wherein [mp] satisfies the formula [mp]> 112-5 log [MFR] -1.4 [VA]
It relates to a hot melt composition consisting of 5% by weight.
【０００７】本発明はまたこのようなエチレン・酢酸ビ
ニル共重合体１００重量部に対し、粘着付与樹脂０〜１
５０重量部及び／又はワックス０〜１００重量部を配合
したホットメルト組成物に関する。The present invention also relates to 100 parts by weight of such an ethylene / vinyl acetate copolymer and 0 to 1 of tackifying resin.
It relates to a hot melt composition containing 50 parts by weight and / or 0 to 100 parts by weight of a wax.
【０００８】酢酸ビニル含有量が５０重量％以下のエチ
レン・酢酸ビニル共重合体は、一般には、ラジカル開始
剤の存在下、エチレンと酢酸ビニルを高温高圧下にラン
ダム共重合することによって得られる。共重合体の融点
は、酢酸ビニル含有量（重合割合）に大きく依存する
が、重合条件によっても影響を受ける。例えば上記高圧
共重合は、撹拌機付のオートクレーブ中で、あるいは管
型反応器中で行われるが、一般には後者で得られる共重
合体の方がランダム性が悪く、同一酢酸ビニル含有量の
共重合体であってもその融点は、前者で得られるものよ
り若干高い。また酢酸ビニル含有量によっても影響度は
異なるが、メルトフローレートの高い共重合体を製造す
るときに、重合時に用いる連鎖移動剤の種類によって大
きく依存し、また重合温度や重合圧力等によっても若干
の影響を受ける。The ethylene / vinyl acetate copolymer having a vinyl acetate content of 50% by weight or less is generally obtained by randomly copolymerizing ethylene and vinyl acetate at high temperature and high pressure in the presence of a radical initiator. The melting point of the copolymer largely depends on the vinyl acetate content (polymerization ratio), but is also influenced by the polymerization conditions. For example, the above high-pressure copolymerization is carried out in an autoclave equipped with a stirrer or in a tubular reactor. In general, the copolymer obtained by the latter has poorer randomness and the same vinyl acetate content. Even the polymer has a slightly higher melting point than the former one. The degree of influence also varies depending on the vinyl acetate content, but when producing a copolymer with a high melt flow rate, it largely depends on the type of chain transfer agent used during polymerization, and also slightly depending on the polymerization temperature, polymerization pressure, etc. Affected by.
【０００９】本発明におけるエチレン・酢酸ビニル共重
合体（Ａ）は、市販の典型的なホットメルト接着剤用グ
レードのものを含み、使用目的によっても異なるが、
［ＶＡ］が１０〜４５, 好ましくは１４〜４１, ［ＭＦ
Ｒ］が０．０５〜２００, 好ましくは０．１〜１００の
範囲にある。The ethylene / vinyl acetate copolymer (A) in the present invention includes typical commercial grades for hot melt adhesives, and varies depending on the purpose of use.
[VA] is 10 to 45, preferably 14 to 41, [MF
R] is in the range of 0.05 to 200, preferably 0.1 to 100.
【００１０】ここに［ＭＦＲ］（ＪＩＳ Ｋ−７２１
０）は、１２５℃, ３２５ｇ荷重で測定した値である。
一般にエチレン・酢酸ビニル共重合体のメルトフローレ
ートの測定に利用されている１９０℃, ２１６０ｇ荷重
における条件では、１００ｇ／１０分を越えるようなも
のの場合、その測定誤差が大きく、正確な値を知ること
が難かしくなるので適切な条件とは言えない。上記、
［ＭＦＲ］０．０５〜２００の範囲は、１９０℃, ２１
６０ｇ荷重でのメルトフローレート（以下［ＭＦＲ］
190 という）の５〜５５００ｇ／１０分に概ね相当し、
またＭＦＲ０．１〜１００の範囲は［ＭＦＲ］190 の１
０〜３０００ｇ／１０分程度に相当する。上記の如き性
状の共重合体は、市場から入手することもできる。[MFR] (JIS K-721)
0) is a value measured at 125 ° C. and a load of 325 g.
Under the conditions of 190 ° C and 2160g load, which are generally used for measuring the melt flow rate of ethylene / vinyl acetate copolymer, in the case of more than 100g / 10 minutes, the measurement error is large and the accurate value is known. This is not an appropriate condition as it will be difficult. the above,
The range of [MFR] 0.05 to 200 is 190 ° C., 21
Melt flow rate at 60 g load (hereinafter [MFR]
190 ) of 5-5500g / 10 minutes,
The range of MFR0.1-100 is 1 of [MFR] 190 .
This corresponds to about 0 to 3000 g / 10 minutes. The copolymer having the above properties can also be obtained from the market.
【００１１】本発明におけるエチレン・酢酸ビニル共重
合体（Ｂ）は、［ＶＡ］が２３〜５０, 好ましくは２４
〜４５, ［ＭＦＲ］が０．１〜１５, 好ましくは０．５
〜１３, ［ｍｐ］＞１１２−５ log［ＭＦＲ］−１．４
［ＶＡ］を満足するものである。ここに上記［ＭＦＲ］
の０．１〜１５は［ＭＦＲ］190 の１０〜６３０ｇ／１
０分程度に相当し、０．５〜１３は［ＭＦＲ］190 の３
５〜５６０ｇ／１０分程度に相当する。The ethylene / vinyl acetate copolymer (B) used in the present invention has a [VA] of 23 to 50, preferably 24.
~ 45, [MFR] is 0.1-15, preferably 0.5
~ 13, [mp]> 112-5 log [MFR] -1.4
It satisfies [VA]. Here above [MFR]
0.1 to 15 is 10 to 630 g / 1 of [MFR] 190
It corresponds to about 0 minutes, and 0.5 to 13 is 3 of [MFR] 190 .
This corresponds to about 5 to 560 g / 10 minutes.
【００１２】共重合体（Ｂ）においては［ＶＡ］及び
［ＭＦＲ］が上記範囲内にあることのほかに、融点が
［ＶＡ］および［ＭＦＲ］との関係で規定される上記式
で示される範囲にあることが特徴的である。すなわち、
汎用のエチレン・酢酸ビニル共重合体が通常、酢酸ビニ
ル含有量及びＭＦＲ値に対応して有する融点よりも高い
融点を示す。このような共重合体（Ｂ）を前記共重合体
（Ａ）と併用して使用することにより、得られたホット
メルト組成物は特に接着性（凝集性）において優れた性
能を発揮する。In the copolymer (B), in addition to having [VA] and [MFR] in the above range, the melting point is represented by the above formula defined by the relationship with [VA] and [MFR]. It is characteristic that it is in the range. That is,
A general-purpose ethylene / vinyl acetate copolymer usually has a melting point higher than the melting point thereof corresponding to the vinyl acetate content and the MFR value. By using such a copolymer (B) in combination with the above copolymer (A), the obtained hot-melt composition exhibits particularly excellent adhesiveness (cohesiveness).
【００１３】このような酢酸ビニル含有量及びＭＦＲ値
との関係において相対的に高い融点を有するエチレン・
酢酸ビニル共重合体は、重合条件を選択することにより
製造することができるが、特に連鎖移動剤の選択が有効
である。すなわち、エチレン・酢酸ビニル共重合体製造
の際に、連鎖移動剤として従来のプロピレン、イソブテ
ンのようなオレフィン類に代えて、メタノール、エタノ
ールのようなアルコール類、或いはアセトアルデヒド、
アセトンのようなカルボニル化合物などを使用すること
によって、生成する共重合体の高融点化を達成すること
が可能である。Ethylene having a relatively high melting point in relation to such vinyl acetate content and MFR value
The vinyl acetate copolymer can be produced by selecting the polymerization conditions, and the selection of the chain transfer agent is particularly effective. That is, in the production of ethylene-vinyl acetate copolymer, conventional propylene as a chain transfer agent, instead of olefins such as isobutene, alcohols such as methanol and ethanol, or acetaldehyde,
By using a carbonyl compound such as acetone, it is possible to attain a high melting point of the copolymer produced.
【００１４】共重合体（Ａ）と共重合体（Ｂ）の使用比
率は、目的とする性状によって異なるが、（Ａ）／
（Ｂ）（重量比）が５〜９５／９５〜５, 好ましくは１
０〜９０／９０〜１０、更に一層好ましくは２０〜７０
／８０〜３０の範囲である。The use ratio of the copolymer (A) and the copolymer (B) depends on the desired properties, but it is (A) /
(B) (weight ratio) is 5 to 95/95 to 5, preferably 1
0-90 / 90-10, even more preferably 20-70
The range is / 80 to 30.
【００１５】本発明のホットメルト組成物には、溶融粘
度、粘着性、接着性等を調整する目的で粘着付与樹脂及
び／又はワックスを配合することができる。とくに粘着
付与樹脂の併用は好ましく、共重合体（Ａ）、（Ｂ）両
成分の合計量１００重量部に対し、０〜１５０重量部、
好ましくは３０〜１３０重量部の割合で配合するのがよ
い。本発明の組成物は溶融粘度の調整のため、あるいは
更なる耐熱接着性付与を目的として共重合体（Ａ）、
（Ｂ）両成分の合計量１００重量部に対し、ワックスを
０〜１００重量部、特に０〜７０重量部の割合で配合し
てもよい。The hot melt composition of the present invention may contain a tackifying resin and / or wax for the purpose of adjusting melt viscosity, tackiness, adhesiveness and the like. In particular, it is preferable to use a tackifying resin in combination, and 0 to 150 parts by weight, based on 100 parts by weight of the total amount of both components of the copolymer (A) and (B),
It is preferable to add 30 to 130 parts by weight. The composition of the present invention is a copolymer (A) for the purpose of adjusting the melt viscosity or for the purpose of imparting further heat resistant adhesion.
The wax may be added in a proportion of 0 to 100 parts by weight, particularly 0 to 70 parts by weight, based on 100 parts by weight of the total amount of both components (B).
【００１６】本発明のホットメルト組成物には必要に応
じ、顔料, 染料, 酸化防止剤, 各種安定剤, 可塑剤, 無
機充填剤などを配合することができる。If desired, the hot melt composition of the present invention may contain pigments, dyes, antioxidants, various stabilizers, plasticizers, inorganic fillers and the like.
【００１７】[0017]
【発明の効果】本発明によれば、低温可撓性及び接着性
（凝集性）に優れたホットメルト組成物を得ることが可
能である。このような特徴を生かし、本発明のホットメ
ルト組成物は、ホットメルト接着剤, ホットメルトコー
ティング剤などとして包装、製本、合板、木工などの各
分野で使用することができる。According to the present invention, it is possible to obtain a hot melt composition excellent in low temperature flexibility and adhesiveness (cohesiveness). Taking advantage of such characteristics, the hot melt composition of the present invention can be used as a hot melt adhesive, a hot melt coating agent and the like in various fields such as packaging, bookbinding, plywood and woodworking.
【００１８】[0018]
【実施例】以下本発明を実施例によって説明するが、本
発明はこれらの実施例に限定されるものではない。なお
実施例、比較例において用いられた原料樹脂および配合
物、組成物の調製法、試験法等は次のとおりである。EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to these examples. The raw material resins and compounds used in Examples and Comparative Examples, the method for preparing the composition, and the test method are as follows.
【００１９】１．原料樹脂および配合物 （１）エチレン・酢酸ビニル共重合体（Ａ） ＥＶＡ−１：ＶＡ含有量２８重量％ ＭＦＲ（１２５℃、３２５ｇ荷重）０．１７ｇ／１０分
（１９０℃、２１６０ｇ荷重におけるＭＦＲの１５ｇ／
１０分に概ね相当） 融点７０℃（＜１１２−５Ｌｏｇ［ＭＦＲ］−１．４
［ＶＡ］＝７６．７） （三井・デュポンポリケミカル社製：エバフレックス２
５０）1. Raw material resin and compound (1) Ethylene / vinyl acetate copolymer (A) EVA-1: VA content 28% by weight MFR (125 ° C., 325 g load) 0.17 g / 10 minutes (190 ° C., 2160 g MFR at load) 15g /
Approximately 10 minutes) Melting point 70 ° C. (<112-5 Log [MFR] -1.4
[VA] = 76.7) (Mitsui-DuPont Polychemical Co .: Eva Flex 2
50)
【００２０】ＥＶＡ−２：ＶＡ含有量２８重量％ ＭＦＲ（１２５℃、３２５ｇ荷重）８．５ｇ／１０分
（１９０℃、２１６０ｇ荷重におけるＭＦＲの４００ｇ
／１０分に概ね相当） 融点６２℃（＜１１２−５Ｌｏｇ［ＭＦＲ］−１．４
［ＶＡ］＝６８．２） （三井・デュポンポリケミカル社製：エバフレックス２
１０）EVA-2: VA content 28% by weight MFR (125 ° C., 325 g load) 8.5 g / 10 minutes (190 ° C., 2160 g load, MFR 400 g
Melting point 62 ° C. (<112-5 Log [MFR] -1.4
[VA] = 68.2) (Mitsui-DuPont Polychemical Co., Ltd .: Eva Flex 2
10)
【００２１】ＥＶＡ−３：ＶＡ含有量２５重量％ ＭＦＲ（１２５℃、３２５ｇ荷重）８．５ｇ／１０分
（１９０℃、２１６０ｇ荷重におけるＭＦＲの４００ｇ
／１０分に概ね相当） 融点６７℃（＜１１２−５Ｌｏｇ［ＭＦＲ］−１．４
［ＶＡ］＝７２．４） （三井・デュポンポリケミカル社製：エバフレックス３
１０）EVA-3: VA content 25% by weight MFR (125 ° C., 325 g load) 8.5 g / 10 min (190 ° C., 2160 g MFR 400 g MFR)
Melting point 67 ° C. (<112-5 Log [MFR] -1.4
[VA] = 72.4) (Mitsui-Dupont Polychemical Co., Ltd .: EVAFLEX 3
10)
【００２２】ＥＶＡ−５：ＶＡ含有量３３重量％ ＭＦＲ（１２５℃、３２５ｇ荷重）８．５ｇ／１０分
（１９０℃、２１６０ｇ荷重におけるＭＦＲの４００ｇ
／１０分に概ね相当） 融点５２℃（＜１１２−５Ｌｏｇ［ＭＦＲ］−１．４
［ＶＡ］＝６１．２） （三井・デュポンポリケミカル社製：エバフレックスＶ
５７７２）EVA-5: VA content 33% by weight MFR (125 ° C., 325 g load) 8.5 g / 10 minutes (190 ° C., 2160 g load, MFR 400 g
Melting point 52 ° C. (<112-5 Log [MFR] -1.4
[VA] = 61.2) (Mitsui DuPont Polychemical Co., Ltd .: Eva Flex V
5772)
【００２３】ＥＶＡ−６：ＶＡ含有量２８重量％ ＭＦＲ（１２５℃、３２５ｇ荷重）２．７ｇ／１０分
（１９０℃、２１６０ｇ荷重におけるＭＦＲの１５０ｇ
／１０分に概ね相当） 融点６５℃（＜１１２−５Ｌｏｇ［ＭＦＲ］−１．４
［ＶＡ］＝７０．６） （三井・デュポンポリケミカル社製：エバフレックス２
２０）EVA-6: VA content 28% by weight MFR (125 ° C., 325 g load) 2.7 g / 10 minutes (190 ° C., 2160 g load, MFR 150 g
Melting point: 65 ° C. (<112-5 Log [MFR] -1.4
[VA] = 70.6) (Mitsui DuPont Polychemical Co., Ltd .: EVA Flex 2
20)
【００２４】（２）エチレン・酢酸ビニル共重合体
（Ｂ） ＥＶＡ−４：ＶＡ含有量２８重量％ ＭＦＲ（１２５℃、３２５ｇ荷重）８．５ｇ／１０分
（１９０℃、２１６０ｇ荷重におけるＭＦＲの４００ｇ
／１０分に概ね相当） 融点７３℃（＞１１２−５Ｌｏｇ［ＭＦＲ］−１．４
［ＶＡ］＝６８．２）(2) Ethylene / vinyl acetate copolymer (B) EVA-4: VA content 28% by weight MFR (125 ° C., 325 g load) 8.5 g / 10 minutes (190 ° C., 2160 g MFR 400 g MFR)
Melting point 73 ° C (> 112-5Log [MFR] -1.4)
[VA] = 68.2)
【００２５】ＥＶＡ−７：ＶＡ含有量２５重量％ ＭＦＲ（１２５℃、３２５ｇ荷重）８．５ｇ／１０分
（１９０℃、２１６０ｇ荷重におけるＭＦＲの４００ｇ
／１０分に概ね相当） 融点７７℃（＞１１２−５Ｌｏｇ［ＭＦＲ］−１．４
［ＶＡ］＝７２．４）EVA-7: VA content 25% by weight MFR (125 ° C., 325 g load) 8.5 g / 10 minutes (190 ° C., 2160 g MFR 400 g MFR)
Melting point: 77 ° C (> 112-5Log [MFR] -1.4)
[VA] = 72.4)
【００２６】ＥＶＡ−８：ＶＡ含有量３３重量％ ＭＦＲ（１２５℃、３２５ｇ荷重）８．５ｇ／１０分
（１９０℃、２１６０ｇ荷重におけるＭＦＲの４００ｇ
／１０分に概ね相当） 融点６２℃（＞１１２−５Ｌｏｇ［ＭＦＲ］−１．４
［ＶＡ］＝６１．２）EVA-8: VA content 33% by weight MFR (125 ° C., 325 g load) 8.5 g / 10 minutes (190 ° C., 2160 g load, MFR 400 g
Melting point: 62 ° C (> 112-5Log [MFR] -1.4)
[VA] = 61.2)
【００２７】但しＥＶＡ樹脂のＶＡ含有量の測定はＪＩ
Ｓ Ｋ−６７３０に準拠して、またＭＦＲの測定はＪＩ
Ｓ Ｋ−７２１０に準拠して実施した。また融点は示差
走査熱量計による分析法（ＤＳＣ法：ＪＩＳ Ｋ−７１
２１に準拠）に基づく最大吸熱ピークを示す温度を測定
して融点とした。However, the VA content of EVA resin is measured by JI
In accordance with SK-6730, MFR measurement is JI
It carried out based on SK-7210. Further, the melting point is analyzed by a differential scanning calorimeter (DSC method: JIS K-71).
21), the temperature at which the maximum endothermic peak is exhibited is measured and taken as the melting point.
【００２８】（３）粘着付与樹脂 ロジンエステル：不均化ロジン−グリセリンエステル、
軟化点１００℃（荒川化学社製：スーパーエステル Ａ
１００）(3) Tackifying resin rosin ester: disproportionated rosin-glycerin ester,
Softening point 100 ° C (Arakawa Chemical Co., Ltd .: Super Ester A)
100)
【００２９】（４）ワックス マイクロクリスタリンワックス、融点８３℃（日本精蝋
社製：Ｈｉ−Ｍｉｃ１０８０）(4) Wax Microcrystalline wax, melting point 83 ° C. (manufactured by Nippon Seiro Co., Ltd .: Hi-Mic 1080)
【００３０】（５）顔料 酸化チタン：石原産業社製、タイペーク ＣＲ−６０(5) Pigment Titanium oxide: manufactured by Ishihara Sangyo Co., Ltd., TAIPAKE CR-60
【００３１】（６）酸化防止剤 ヒンダードフェノール系酸化防止剤：チバガイギ社製、
イルガノックス１０１０(6) Antioxidant Hindered phenolic antioxidant: manufactured by Ciba-Geigy Co.,
Irganox 1010
【００３２】２．ホットメルト組成物の調製方法 ＥＶＡ樹脂／粘着付与樹脂／ワックス／顔料／酸化防止
剤を所定比率で配合した混合物５００ｇを１リットルの
ビーカーに仕込み、これを１８０℃×１時間溶融撹拌混
合を行った。2. Preparation Method of Hot Melt Composition 500 g of a mixture prepared by mixing EVA resin / tackifying resin / wax / pigment / antioxidant in a predetermined ratio was charged into a 1 liter beaker, and the mixture was melted and stirred at 180 ° C. for 1 hour. .
【００３３】３．試験方法 （１）溶融粘度の測定方法 得られたホットメルト組成物をブルックフィールド型粘
度計にて、温度１８０℃, 回転数６ｍｉｎ-1の条件にて
溶融粘度を測定した。3. Test method (1) Method for measuring melt viscosity The melt viscosity of the obtained hot melt composition was measured with a Brookfield viscometer at a temperature of 180 ° C. and a rotation speed of 6 min −1 .
【００３４】（２）環球法軟化点の測定方法 ホットメルト組成物をＪＡＩ ７−１９９１に準拠して
測定した。(2) Method for measuring softening point by ring and ball method The hot melt composition was measured according to JAI 7-991.
【００３５】（３）低温可撓性の測定方法 ホットメルト組成物をＪＡＩ ７−１９９１に準拠して
測定した。(3) Method for measuring low temperature flexibility The hot melt composition was measured according to JAI 7-991.
【００３６】（４）引張強度（降伏点応力、破断点応
力）の測定方法 ホットメルト組成物を引張試験機を用いてＪＩＳ Ｋ−
６３０１に準拠して測定した。（測定雰囲気温度２３
℃）(4) Method of measuring tensile strength (stress at yield point, stress at break point) The hot melt composition was measured according to JIS K- using a tensile tester.
It measured based on 6301. (Measurement ambient temperature 23
℃)
【００３７】（５）製本用ホットメルト接着剤としての
紙葉との接着強度の測定方法 上質紙（25mm×75mm×0.1mm ）を１００枚束ねた製本モ
デルを作成（背部のホットメルト接着剤層部の塗工厚み
１mm、塗工温度 180℃）した。そのモデルサンプルを引
張試験機を用いて１枚の紙葉を接着面と直角方向に200m
m/min の速度で引張り、形成された接着部からページが
切れる、あるいはページが抜けるまでの最大引張強度を
測定した。（測定雰囲気温度２３℃）(5) Method for measuring adhesive strength with paper sheet as hot melt adhesive for bookbinding A bookbinding model was prepared by bundling 100 sheets of high-quality paper (25 mm x 75 mm x 0.1 mm) (hot melt adhesive layer on the back). The coating thickness was 1 mm and the coating temperature was 180 ° C. Using a tensile tester, one sheet of the model sample is placed 200m in the direction perpendicular to the adhesive surface.
It was pulled at a speed of m / min, and the maximum tensile strength until the page was cut or the page was pulled out from the formed adhesive part was measured. (Measuring atmosphere temperature 23 ℃)
【００３８】実施例１ 表１に示すようにＥＶＡ−１／ＥＶＡ−４／ロジンエス
テル／ワックス／酸化チタン／酸化防止剤＝１７／２６
／４０／１５／２／０．１の比率で配合した混合物５０
０ｇを、上記２．の方法で溶融撹拌混合してホットメル
ト組成物を調製した。 Example 1 As shown in Table 1, EVA-1 / EVA-4 / rosin ester / wax / titanium oxide / antioxidant = 17/26
Mixture 50 blended in a ratio of /40/15/2/0.1
0 g of the above 2. A hot melt composition was prepared by melt-stirring and mixing by the method described in 1.
【００３９】得られたホットメルト組成物を、上記３．
の方法で溶融粘度、環球法軟化点，低温可撓性、引張強
度及び紙葉との接着強度を測定し、物性を評価した。結
果を表１に示す。The hot melt composition thus obtained was mixed with the above 3.
The melt viscosity, ring-and-ball method softening point, low temperature flexibility, tensile strength, and adhesive strength with paper were measured by the method of 1. to evaluate the physical properties. The results are shown in Table 1.
【００４０】比較例１ 実施例１において、ＥＶＡ成分のうち、ＥＶＡ−４をＥ
ＶＡ−２に替えた以外は実施例１と同様にして配合し
た、表１に示す組成の配合物を実施例１と同様の方法で
ホットメルト組成物を調製し、各種物性測定、性能の評
価を実施した。結果を表１に示す。 Comparative Example 1 In Example 1, among the EVA components, EVA-4 was
A hot melt composition was prepared in the same manner as in Example 1 except that the composition was changed to VA-2 and was mixed in the same manner as in Example 1, and the hot melt composition was measured. Was carried out. The results are shown in Table 1.
【００４１】比較例２ 実施例１において、ＥＶＡ成分のうち、ＥＶＡ−４をＥ
ＶＡ−３に替えた以外は実施例１と同様にして配合し
た、表１に示す組成の配合物を実施例１と同様の方法で
ホットメルト組成物を調製し、各種物性測定、性能の評
価を実施した。結果を表１に示す。 Comparative Example 2 In Example 1, among the EVA components, EVA-4 was
A hot melt composition was prepared in the same manner as in Example 1, except that the composition was changed to VA-3 and was mixed in the same manner as in Example 1, and the composition shown in Table 1 was used to measure various physical properties and evaluate performance. Was carried out. The results are shown in Table 1.
【００４２】実施例２ 実施例１において、ＥＶＡ成分の内でＥＶＡ−４をＥＶ
Ａ−７に替え、表２に示す組成の配合物を実施例１と同
様にしてホットメルト組成物を調製し、各種物性、性能
の評価を実施した。結果を表２に示す。 Example 2 In Example 1, EVA-4 was selected from among the EVA components.
A hot melt composition was prepared in the same manner as in Example 1 except that the composition having the composition shown in Table 2 was used instead of A-7, and various physical properties and performances were evaluated. The results are shown in Table 2.
【００４３】実施例３ 実施例１において、ＥＶＡ成分の内でＥＶＡ−４をＥＶ
Ａ−８に替え、表２に示す組成の配合物を実施例１と同
様にしてホットメルト組成物を調製し、各種物性、性能
の評価を実施した。結果を表２に示す。 EXAMPLE 3 In Example 1, EVA-4 was replaced with EV among the EVA components.
A hot melt composition was prepared in the same manner as in Example 1 except that the composition having the composition shown in Table 2 was used instead of A-8, and various physical properties and performances were evaluated. The results are shown in Table 2.
【００４４】比較例３ 実施例１において、ＥＶＡ成分の内でＥＶＡ−４をＥＶ
Ａ−５に替え、表２に示す組成の配合物を実施例１と同
様にしてホットメルト組成物を調製し、各種物性、性能
の評価を実施した。結果を表２に示す。COMPARATIVE EXAMPLE 3 In Example 1, EVA-4 was selected from among the EVA components.
A hot-melt composition was prepared in the same manner as in Example 1 except that the composition having the composition shown in Table 2 was used instead of A-5, and various physical properties and performances were evaluated. The results are shown in Table 2.
【００４５】実施例４ 実施例１において、ＥＶＡ成分の内でＥＶＡ−１／ＥＶ
Ａ−４の配合比率を１７／２６から１０／３３に替え、
表３に示す組成の配合物を実施例１と同様にしてホット
メルト組成物を調製し、各種物性、性能の評価を実施し
た。結果を表３に示す。 Example 4 In Example 1, among the EVA components, EVA-1 / EV
Change the mixing ratio of A-4 from 17/26 to 10/33,
A hot melt composition was prepared in the same manner as in Example 1 except that the composition having the composition shown in Table 3 was evaluated, and various physical properties and performances were evaluated. The results are shown in Table 3.
【００４６】比較例４ 実施例４において、ＥＶＡ成分の内でＥＶＡ−４をＥＶ
Ａ−２に替え、表３に示す組成の配合物を実施例１と同
様にしてホットメルト組成物を調製し、各種物性、性能
の評価を実施した。結果を表３に示す。COMPARATIVE EXAMPLE 4 In Example 4, EVA-4 was used as EV among the EVA components.
A hot melt composition was prepared in the same manner as in Example 1 except that the composition having the composition shown in Table 3 was used instead of A-2, and various physical properties and performances were evaluated. The results are shown in Table 3.
【００４７】実施例５ 表３に示すように、ＥＶＡ−６／ＥＶＡ−４／酸化チタ
ン／酸化防止剤／ロジンエステル／ワックス＝２８／２
０／４０／１０／２の比率で配合した混合物を実施例１
と同様の方法で溶融撹拌混合してホットメルト組成物を
調製し、各種物性測定、性能評価を実施した。結果を表
３に示す。 Example 5 As shown in Table 3, EVA-6 / EVA-4 / titanium oxide / antioxidant / rosin ester / wax = 28/2
A mixture formulated in a ratio of 0/40/10/2 was used in Example 1.
A hot melt composition was prepared by melt-stirring and mixing in the same manner as described above, and various physical properties were measured and performance was evaluated. The results are shown in Table 3.
【００４８】[0048]
【表１】 各種ホットメルト組成物の配合組成、物性、
接着性能の測定結果 [Table 1] Blending composition and physical properties of various hot melt compositions
Adhesive performance measurement results
【００４９】[0049]
【表２】 各種ホットメルト組成物の配合組成、物性、
接着性能の測定結果 [Table 2] Composition of various hot melt compositions, physical properties,
Adhesive performance measurement results
【００５０】[0050]
【表３】 各種ホットメルト組成物の配合組成、物性、
接着性能の測定結果 [Table 3] Blending composition and physical properties of various hot melt compositions
Adhesive performance measurement results
【００５１】実施例及び比較例の結果から明らかなよう
に、通常のＥＶＡと、高ＭＦＲ、高融点のＥＶＡを併用
したホットメルト組成物は、低温可撓性に優れ、かつ引
張強度も良好で、実際に紙葉との接着強度も優れた、凝
集製に富んだ性能が発揮されることが認められる。As is clear from the results of the examples and comparative examples, the hot melt composition in which the ordinary EVA and the EVA having a high MFR and a high melting point are used in combination has excellent low temperature flexibility and good tensile strength. Actually, it is recognized that the adhesiveness with the paper sheet is also excellent and the rich performance of aggregation is exhibited.
Claims (2)
共重合体からなり、１２５℃、３２５ｇ荷重におけるメ
ルトフローレート（ｇ／１０分）を［ＭＦＲ］、酢酸ビ
ニル含有量（重量％）を［ＶＡ］、示差走査熱量計に基
づく最大吸熱ピークを示す温度（℃）を［ｍｐ］で表示
するときに、 ［ＶＡ］が１０〜４５、［ＭＦＲ］が０．０５〜２００
のエチレン・酢酸ビニル共重合体（Ａ）５〜９５重量％
と、 ［ＶＡ］が２３〜５０、［ＭＦＲ］が０．１〜１５であ
り、かつ［ｍｐ］が式 ［ｍｐ］＞１１２−５ log［ＭＦＲ］−１．４［ＶＡ］ を満足するエチレン・酢酸ビニル共重合体（Ｂ）９５〜
５重量％とからなるホットメルト組成物。1. A melt flow rate (g / 10 min) at 125 ° C. under a load of 325 g, [MFR], and a vinyl acetate content (% by weight) [VA, which is composed of at least two ethylene / vinyl acetate copolymers. ], When displaying the temperature (° C) showing the maximum endothermic peak based on the differential scanning calorimeter in [mp], [VA] is 10 to 45 and [MFR] is 0.05 to 200.
Ethylene-vinyl acetate copolymer (A) of 5 to 95% by weight
And ethylene in which [VA] is 23 to 50, [MFR] is 0.1 to 15 and [mp] satisfies the formula [mp]> 112-5 log [MFR] -1.4 [VA]. -Vinyl acetate copolymer (B) 95-
A hot melt composition comprising 5% by weight.
０重量部当り、粘着付与樹脂０〜１５０重量部及び／又
はワックス０〜１００重量部がさらに配合されてなる請
求項１記載のホットメルト組成物。2. An ethylene / vinyl acetate copolymer component 10
The hot melt composition according to claim 1, further comprising 0 to 150 parts by weight of a tackifying resin and / or 0 to 100 parts by weight of a wax per 0 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15152994A JP3773213B2 (en) | 1994-02-24 | 1994-06-09 | Hot melt composition |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5127894 | 1994-02-24 | ||
| JP6-51278 | 1994-02-24 | ||
| JP15152994A JP3773213B2 (en) | 1994-02-24 | 1994-06-09 | Hot melt composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07286151A true JPH07286151A (en) | 1995-10-31 |
| JP3773213B2 JP3773213B2 (en) | 2006-05-10 |
Family
ID=26391813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15152994A Expired - Fee Related JP3773213B2 (en) | 1994-02-24 | 1994-06-09 | Hot melt composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3773213B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020048672A (en) * | 2000-12-18 | 2002-06-24 | 유현식 | Ethylenevinylacetate-based adhesive resin composition |
| JP2002265704A (en) * | 2001-03-06 | 2002-09-18 | Tosoh Corp | Surface protection film-dedicated ethylene/vinyl acetate copolymer composition and film composed of the same |
-
1994
- 1994-06-09 JP JP15152994A patent/JP3773213B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020048672A (en) * | 2000-12-18 | 2002-06-24 | 유현식 | Ethylenevinylacetate-based adhesive resin composition |
| JP2002265704A (en) * | 2001-03-06 | 2002-09-18 | Tosoh Corp | Surface protection film-dedicated ethylene/vinyl acetate copolymer composition and film composed of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3773213B2 (en) | 2006-05-10 |
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