JPH08151057A - Tube container - Google Patents
Tube containerInfo
- Publication number
- JPH08151057A JPH08151057A JP29693794A JP29693794A JPH08151057A JP H08151057 A JPH08151057 A JP H08151057A JP 29693794 A JP29693794 A JP 29693794A JP 29693794 A JP29693794 A JP 29693794A JP H08151057 A JPH08151057 A JP H08151057A
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- Prior art keywords
- shoulder
- resin
- tube container
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- polyethylene
- Prior art date
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、練り歯磨き等の日用
品、化粧品、医薬品、食品等の包装に使用されるチュー
ブ容器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube container used for packaging daily necessities such as toothpaste, cosmetics, pharmaceuticals and foods.
【０００２】[0002]
【従来の技術】練り歯磨き等を入れる従来のチューブ容
器、例えば、ラミネートチューブ容器は、ガスバリア性
や水蒸気バリア性のあるフィルム材料を使用したフィル
ム胴部と高密度ポリエチレンで成形された肩部（ショル
ダー部）から構成されている。バリア性のあるフィルム
材料とは、例えば無機物を蒸着したフィルムやアルミニ
ウム箔を示し、これらを構成要素として前記胴部を形成
している。従来のラミネートチューブ容器の肩部は、密
度０．９４５以上の高密度ポリエチレン（高密度ポリエ
チレンの密度；０．９４１〜０．９６５）で成形されて
いるため、内容物を最後まで押し出す（絞り出す）時
に、肩部が非常に硬く抵抗感があるため絞りきれず、内
容物が残ることが多々見られるものであり、その傾向は
チューブ容器口径が大きくなるほど多くなる。そのた
め、内容物を押し出す際における肩部の反発強度を弱め
るために、従来は、肩部の肉厚を薄くする、柔らか
い（曲げ強度の弱い）樹脂で成形する、等の方法が考え
られている。2. Description of the Related Art A conventional tube container for containing toothpaste, such as a laminated tube container, has a film body made of a film material having a gas barrier property and a water vapor barrier property and a shoulder part made of high density polyethylene (shoulder). Section). The film material having a barrier property means, for example, a film or an aluminum foil on which an inorganic material is vapor-deposited, and the body portion is formed by using these as constituent elements. Since the shoulder part of the conventional laminated tube container is molded from high density polyethylene with a density of 0.945 or more (density of high density polyethylene; 0.941 to 0.965), the contents are pushed out (squeezed out) to the end. At times, it is often seen that the shoulder part is very hard and has a resistance, so that it cannot be squeezed and the contents remain, which tendency increases as the diameter of the tube container increases. Therefore, in order to weaken the resilience strength of the shoulder portion when pushing out the contents, conventionally, methods such as thinning the thickness of the shoulder portion and molding with a soft (weak bending strength) resin have been considered. .
【０００３】[0003]
【発明が解決しようとする課題】上記ラミネートチュー
ブ容器の肩部肉厚は、通常１．５ｍｍ程度であり、内容
物を最後まで絞り出すのに４ｋｇｆ程度の力を必要とす
る。通常の場合、内容物を最後まで絞り出すのには、約
２ｋｇｆ程度の力が適当とされており、そのために肩部
の肉厚を通常の１／２程度にすれば、約２ｋｇ程度の力
で絞り出せるが、肩部の酸素ガスバリア性あるいは水蒸
気バリア性が低下して実用的でない。The thickness of the shoulder portion of the above laminated tube container is usually about 1.5 mm, and a force of about 4 kgf is required to squeeze the contents to the end. Normally, a force of about 2 kgf is appropriate to squeeze out the contents to the end. Therefore, if the thickness of the shoulder part is reduced to about 1/2 of the normal thickness, about 2 kg of force is required. Although it can be squeezed out, the oxygen gas barrier property or the water vapor barrier property of the shoulder portion is deteriorated, which is not practical.
【０００４】本発明の目的は、以上のような問題点に着
目してなされたもので、少なくとも肩部を柔らかい樹脂
で成形しても、酸素ガスバリア性や水蒸気バリア性を、
適正に維持できるようにすることにある。The object of the present invention has been made by paying attention to the above problems. Even if at least the shoulder portion is molded with a soft resin, the oxygen gas barrier property and the water vapor barrier property are improved.
It is to be able to maintain properly.
【０００５】[0005]
【課題を解決するための手段】本発明は、筒状の胴部１
と胴部１下部に底部２と胴部１上部に肩部３と肩部３上
部に首部４と首部４上部に施蓋部Ｂを備えたチューブ容
器Ａにおいて、少なくとも肩部３は、密度０．９４５以
下のポリエチレンに３０重量％以下のエチレン−ビニル
アルコール共重合体樹脂を配合した樹脂で成形されてい
ることを特徴とするチューブ容器である。SUMMARY OF THE INVENTION The present invention is directed to a tubular body 1
In the tube container A having the bottom portion 2 at the lower portion of the body portion 1, the shoulder portion 3 at the upper portion of the body portion 1, the neck portion 4 at the upper portion of the shoulder portion 3 and the lid portion B at the upper portion of the neck portion 4, at least the shoulder portion 3 has a density of 0. A tube container characterized by being molded from a resin in which 30 wt% or less of an ethylene-vinyl alcohol copolymer resin is mixed with polyethylene of 945 or less.
【０００６】[0006]
【実施例】本発明のチューブ容器を、図１に示す実施例
に従って詳細に説明する。図１に示す本発明のチューブ
容器Ａは、ラミネートフィルムにより成形された筒状の
胴部１を備え、該胴部１下部は閉塞された平坦状の底部
２となっており、胴部１上部には、肩部３が一体的に加
熱溶融接合されている。EXAMPLES The tube container of the present invention will be described in detail according to the example shown in FIG. The tube container A of the present invention shown in FIG. 1 includes a tubular body portion 1 formed of a laminated film, the lower portion of the body portion 1 is a closed flat bottom portion 2, and the upper portion of the body portion 1 is formed. The shoulder portion 3 is integrally heat-melt-bonded to each other.
【０００７】肩部３上部には、一体に（又は別体に）首
部４を備え、キャップ内嵌合部７を有するキャップＣを
施蓋するための螺旋状ネジ部（又はロック嵌合部）等の
施封嵌合部５による施蓋部Ｂを、該首部４上部に一体に
（又は別体に）備え、中空状の胴部１内部は首部４内部
を通って開口部６に連通している。なお本発明のチュー
ブ容器Ａにおいては、肩部３、首部４、嵌合部５による
施蓋部Ｂは同一樹脂によって一体に成形することが適当
であるが特に限定はされない。また施蓋部Ｂの構造は特
に限定されるものではなく、また施蓋部ＢとキャップＣ
とがヒンジ等（図示せず）を介して連結した構造のもの
であってもよい。The upper portion of the shoulder portion 3 is provided with a neck portion 4 integrally (or separately), and a spiral screw portion (or lock fitting portion) for covering the cap C having the fitting portion 7 in the cap. A lid-applied portion B formed by a sealing fitting portion 5 such as the above is integrally (or separately) provided on the upper portion of the neck portion 4, and the inside of the hollow body portion 1 communicates with the opening portion 6 through the inside of the neck portion 4. ing. In the tube container A of the present invention, the shoulder portion 3, the neck portion 4, and the lid portion B formed by the fitting portion 5 are suitably formed integrally with the same resin, but are not particularly limited. Further, the structure of the cover part B is not particularly limited, and the cover part B and the cap C are not limited.
It may have a structure in which and are connected via a hinge or the like (not shown).
【０００８】前記胴部１は、酸素ガスバリア性、水蒸気
バリア性のあるラミネートフィルムにより成形されてい
る。前記ラミネートフィルムとしては、胴部１の外面、
又は／及び内面に、ポリエチレン（ＰＥ）、低密度ポリ
エチレン（ＬＤＰＥ）、高密度ポリエチレン（ＨＤＰ
Ｅ）、ポリプロピレン（ＰＰ）等の樹脂フィルム材料を
使用し、中間層にエチレン−ビニルアルコール共重合体
（ＥＶＯＨ）、ナイロン、ポリ塩化ビニリデン（ＰＶＤ
Ｃ）、アクリロニトリル共重合体等のガスバリア性、水
蒸気バリア性の樹脂フィルム材料を使用したラミネート
フィルムが使用される。The body portion 1 is formed of a laminated film having an oxygen gas barrier property and a water vapor barrier property. As the laminate film, the outer surface of the body 1,
Or / and on the inner surface, polyethylene (PE), low density polyethylene (LDPE), high density polyethylene (HDP)
E), a resin film material such as polypropylene (PP) is used, and ethylene-vinyl alcohol copolymer (EVOH), nylon, polyvinylidene chloride (PVD) is used for the intermediate layer.
A laminate film using a resin film material having gas barrier properties and water vapor barrier properties such as C) and an acrylonitrile copolymer is used.
【０００９】例えば、ＰＥ／ＥＶＯＨ／ＰＥ、ＰＥ／ナ
イロン／ＰＥ、ＰＰ／ＥＶＯＨ／ＰＰ、ＰＰ／ＰＶＤＣ
／ＰＰ等のラミネートフィルムである。あるいはその他
に、前記胴部１の外面、又は／及び内面、又は中間層
に、無機物（酸化珪素）を蒸着したバリア性のある樹脂
フィルム材料、アルミニウム箔若しくはアルミニウム箔
をラミネートしたバリア性のある樹脂フィルム材料等を
配したラミネートフィルムである。For example, PE / EVOH / PE, PE / nylon / PE, PP / EVOH / PP, PP / PVDC
It is a laminated film such as / PP. Alternatively, on the outer surface and / or inner surface of the body 1, or on the intermediate layer, a resin film material having a barrier property in which an inorganic substance (silicon oxide) is deposited, an aluminum foil, or a resin having a barrier property laminated with an aluminum foil. It is a laminated film on which film materials and the like are arranged.
【００１０】肩部３は、密度０．９４５以下（例えば
０．９２０〜０．９４５）のポリエチレンに、３０重量
％以下のエチレン−ビニルアルコール共重合体樹脂を配
合した樹脂で成形され、肩部３の肉厚は、通常（従来）
と同様に１．５ｍｍ程度が適当である。The shoulder portion 3 is formed of a resin obtained by mixing polyethylene having a density of 0.945 or less (for example, 0.920 to 0.945) with 30% by weight or less of an ethylene-vinyl alcohol copolymer resin. Thickness of 3 is normal (conventional)
Similarly to the above, about 1.5 mm is suitable.
【００１１】本発明のチューブ容器Ａにおける肩部３に
使用されるポリエチレン樹脂は、０．９２５〜０．９４
５の高密度ポリエチレンから、０．９２５以下の低密度
ポリエチレンまでを使用するものであり、また、使用す
る最適のポリエチレンは、密度０．９２０程度の直鎖低
密度ポリエチレンが適当である。The polyethylene resin used for the shoulder portion 3 in the tube container A of the present invention is 0.925 to 0.94.
5 to the low density polyethylene of 0.925 or less are used, and the optimum polyethylene to be used is a linear low density polyethylene having a density of about 0.920.
【００１２】一般的に、密度０．９５０以上の高密度ポ
リエチレンの曲げ弾性率は、１２０００ｋｇ／ｃｍ2 以
上であるが、密度０．９２０程度の上記直鎖低密度ポリ
エチレンの曲げ弾性率は、２０００ｋｇ／ｃｍ2 〜６０
００ｋｇ／ｃｍ2 であり、この曲げ弾性率によって、チ
ューブ容器Ａに加工した時の肩部３の絞り出し時の反発
強度が約２ｋｇｆとなるものである。Generally, the bending elastic modulus of high density polyethylene having a density of 0.950 or more is 12000 kg / cm 2 or more, but the bending elastic modulus of the linear low density polyethylene having a density of about 0.920 is 2000 kg. / Cm 2 to 60
The flexural modulus of elasticity is 00 kg / cm 2 , and the repulsive strength when the shoulder 3 is squeezed out when the tube container A is processed is about 2 kgf.
【００１３】このように、本発明のチューブ容器Ａにお
ける肩部３には、弾性率を低く抑えるために、弾性率低
下用の樹脂として、密度０．９４５以下のポリエチレン
が使用されるものである。As described above, in the shoulder portion 3 of the tube container A of the present invention, polyethylene having a density of 0.945 or less is used as the resin for lowering the elastic modulus in order to keep the elastic modulus low. .
【００１４】しかし、密度０．９４５以下のポリエチレ
ンでは、酸素ガスバリア性、水蒸気バリア性が密度０．
９４５以上の高密度ポリエチレンを使用した場合よりも
低下する。However, with polyethylene having a density of 0.945 or less, the oxygen gas barrier property and the water vapor barrier property have a density of 0.
It is lower than when high density polyethylene of 945 or more is used.
【００１５】密度０．９４５以上の高密度ポリエチレン
を使用した場合の透過度を下記に示す。 ・酸素透過度 ；０．０１４５ｃｍ3 ／tube・day ・水蒸気透過度；０．００５０ｇ／tube・dayThe transmittance when high density polyethylene having a density of 0.945 or more is used is shown below.・ Oxygen permeability: 0.0145 cm 3 / tube ・ day ・ Water vapor permeability: 0.0050 g / tube ・ day
【００１６】そこで、上記バリア性の低下を防ぐため
に、本発明のチューブ容器Ａにおける肩部３の成形に使
用される樹脂として、密度０．９４５以下のポリエチレ
ンに、全量１００重量％に対して、３０重量％以下のエ
チレン−ビニルアルコール共重合体樹脂（バリア性強化
用の樹脂）を配合した樹脂が使用されるものである。Therefore, in order to prevent the deterioration of the above-mentioned barrier property, as a resin used for molding the shoulder portion 3 in the tube container A of the present invention, polyethylene having a density of 0.945 or less, and a total amount of 100% by weight, A resin containing 30% by weight or less of an ethylene-vinyl alcohol copolymer resin (a resin for enhancing the barrier property) is used.
【００１７】なお、ポリエチレン樹脂と、エチレン−ビ
ニルアルコール共重合体樹脂とは、その配合率によって
は相溶性が悪くなる場合があり、その場合には、ポリエ
チレンを内外面に配したラミネートフィルムにより成形
された前記胴部１と、前記配合樹脂により成形された肩
部３との良好な接合強度のある接合が得られない。そこ
で、相溶化剤、接着強化剤として、酸変性ポリエチレン
等の接着性樹脂（例えば接着剤；アドマー；三井石油化
学工業（株）製）を適当量添加してもよい。その場合の
添加量は特に限定されないが、例えば１０重量％程度が
樹脂透明性や樹脂流動安定性の面から適当である。The compatibility between the polyethylene resin and the ethylene-vinyl alcohol copolymer resin may deteriorate depending on the blending ratio. In that case, the polyethylene resin is molded with a laminate film having inner and outer surfaces. It is not possible to obtain a joint having good joint strength between the formed body portion 1 and the shoulder portion 3 formed of the mixed resin. Therefore, an appropriate amount of an adhesive resin such as acid-modified polyethylene (for example, an adhesive; Admer; manufactured by Mitsui Petrochemical Industry Co., Ltd.) may be added as a compatibilizer and an adhesion strengthening agent. The amount added in that case is not particularly limited, but for example, about 10% by weight is suitable from the viewpoint of resin transparency and resin flow stability.
【００１８】上記配合率にて配合した樹脂により成形さ
れた肩部３は、肩部肉厚１．５ｍｍ程度で、上記透過度
以下を維持することができる。また、エチレン−ビニル
アルコール共重合体樹脂の配合量を３０重量％以下に抑
えてあるため、肩部３は、絞り出しにおける反発強度
を、２ｋｇｆ程度に維持できる。The shoulder portion 3 molded from the resin compounded in the above-mentioned compounding ratio has a shoulder wall thickness of about 1.5 mm and can maintain the transparency or less. Further, since the blending amount of the ethylene-vinyl alcohol copolymer resin is suppressed to 30% by weight or less, the shoulder portion 3 can maintain the repulsive strength of about 2 kgf when squeezed out.
【００１９】以下に、本発明のチューブ容器の具体的実
施例を示す。Specific examples of the tube container of the present invention will be shown below.
【００２０】＜実施例１＞ ・肩部成形用樹脂 直鎖低密度ポリエチレン；ＮＵＣＧ5371（密度０．９２
０；日本ユニカー製）エチレン−ビニルアルコール；エ
バールＥＰ−Ｅ105 Ａ（（株）クラレ製）； 配合率；２０ｗｔ％ 上記樹脂配合率からなる成形用樹脂によって成形された
肩部を備えたチューブ容器は、下記の絞り出し反発強
度、及びガスバリア性が得られた。 ・絞り出し反発強度；１．９０ｋｇｆ（肩部の肉厚；
１．５ｍｍ） ・酸素透過度 ；０．００６５ｃｍ3 ／tube・day ・水蒸気透過度；０．００４０ｇ／tube・day 上記のように絞り出し反発強度を、２ｋｇｆ以下に保持
でき、酸素透過度、水蒸気透過度を、密度０．９４５以
上の高密度ポリエチレンで成形されたチューブ容器と同
等以下に抑えることができ、良好なチューブ容器適性が
得られた。<Example 1> Resin for shoulder molding Linear low-density polyethylene; NUCG5371 (density 0.92)
0; manufactured by Nippon Unicar) ethylene-vinyl alcohol; Eval EP-E105 A (manufactured by Kuraray Co., Ltd.); blending ratio: 20 wt% A tube container provided with a shoulder formed by a molding resin having the above resin blending ratio is The following squeezing repulsion strength and gas barrier property were obtained.・ Rebound strength; 1.90 kgf (shoulder thickness;
1.5mm) ・ Oxygen permeability: 0.0065cm 3 / tube ・ day ・ Water vapor permeability: 0.0040g / tube ・ day As mentioned above, the squeezing repulsion strength can be maintained at 2kgf or less, and the oxygen permeability and water vapor permeability The degree can be suppressed to a level equal to or less than that of a tube container formed of high density polyethylene having a density of 0.945 or more, and good tube container suitability was obtained.
【００２１】＜比較例＞ ・肩部成形用樹脂 直鎖低密度ポリエチレン；ＮＵＣＧ5371（密度０．９２
０；日本ユニカー製）上記成形用樹脂によって成形され
た肩部を備えたチューブ容器は、下記の絞り出し反発強
度、及びガスバリア性が得られた。 ・絞り出し反発強度；１．８０ｋｇｆ（肩部の肉厚；
１．５ｍｍ） ・酸素透過度 ；０．０２９５ｃｍ3 ／tube・day ・水蒸気透過度；０．００８０ｇ／tube・day 上記のように絞り出し反発強度は２ｋｇｆ以下に保持で
きたが、酸素透過度、水蒸気透過度は、上記実施例１に
よる本発明のチューブ容器（密度０．９４５以上の高密
度ポリエチレンで成形されたチューブ容器）をそれぞれ
上回り、良好なチューブ適性は得られなかった。<Comparative Example> -Resin for shoulder molding: linear low density polyethylene; NUCG5371 (density 0.92)
(0; manufactured by Nippon Unicar Co., Ltd.) The tube container provided with the shoulder portion molded from the above-mentioned molding resin had the following squeezing-out repulsive strength and gas barrier property.・ Squeeze-out repulsion strength: 1.80 kgf (shoulder thickness;
・ Oxygen permeability: 0.0295 cm 3 / tube ・ day ・ Water vapor permeability: 0.0080 g / tube ・ day As mentioned above, the squeezed-out repulsion strength could be kept below 2 kgf, but the oxygen permeability, water vapor The permeability was higher than that of the tube container of the present invention according to Example 1 (the tube container formed of high-density polyethylene having a density of 0.945 or more), and good tube suitability was not obtained.
【００２２】[0022]
【作用】本発明のチューブ容器は、少なくとも肩部３が
密度０．９４５以下のポリエチレンに３０重量％以下の
エチレン−ビニルアルコール共重合体樹脂を配合した樹
脂で成形されているので、絞り出し反発強度を２ｋｇｆ
以下に保持でき、酸素透過度、水蒸気透過度を、密度
０．９４５以上の高密度ポリエチレンで成形されたチュ
ーブ容器と同等以下に抑えることができ、良好なチュー
ブ容器適性が得られる。In the tube container of the present invention, at least the shoulder portion 3 is formed of a resin in which a polyethylene having a density of 0.945 or less and an ethylene-vinyl alcohol copolymer resin of 30% by weight or less is blended. 2 kgf
The oxygen permeability and the water vapor permeability can be kept below, and the oxygen permeability and the water vapor permeability can be suppressed to be equal to or less than those of a tube container formed of high-density polyethylene having a density of 0.945 or more, and good tube container suitability can be obtained.
【００２３】[0023]
【発明の効果】本発明のチューブ容器は、肩部の肉厚を
薄くすることなく、また酸素ガスバリア性あるいは水蒸
気バリア性を低下させることなく、肩部の絞り出し反発
強度をより柔軟にすることができ、従来より少ない２ｋ
ｇｆ程度の力で肩部を押圧して内容物を最後まで絞り出
すことができる効果があり、柔らかい樹脂で成形しても
酸素ガスバリア性や水蒸気バリア性を現状通り維持でき
る効果がある。INDUSTRIAL APPLICABILITY The tube container of the present invention can make the squeezing-out resilience of the shoulder portion more flexible without reducing the thickness of the shoulder portion and reducing the oxygen gas barrier property or the water vapor barrier property. Yes, 2k less than before
There is an effect that the shoulder portion can be pressed with a force of about gf to squeeze out the contents to the end, and even if molded with a soft resin, the oxygen gas barrier property and the water vapor barrier property can be maintained as they are.
【図１】本発明のチューブ容器の一実施例を示す側面図
である。FIG. 1 is a side view showing an embodiment of a tube container of the present invention.
Ａ…チューブ容器本体 Ｂ…施封部 Ｃ…キャップ １…胴部 ２…底部 ３…肩部 ４…首部 ５…施封嵌
合部 ６…開口部 ７…キャップ内嵌合部A ... Tube container body B ... Sealing part C ... Cap 1 ... Body part 2 ... Bottom part 3 ... Shoulder part 4 ... Neck part 5 ... Sealing fitting part 6 ... Opening part 7 ... Fitting part in cap
Claims (1)
１上部に肩部３と肩部３上部に首部４と首部４上部に施
蓋部Ｂを備えたチューブ容器Ａにおいて、少なくとも肩
部３は、密度０．９４５以下のポリエチレンに３０重量
％以下のエチレン−ビニルアルコール共重合体樹脂を配
合した樹脂で成形されていることを特徴とするチューブ
容器。1. A tube container having a tubular body portion 1, a bottom portion 2 on the lower portion of the body portion 1, a shoulder portion 3 on the upper portion of the body portion 1, a neck portion 4 on the upper portion of the shoulder portion 3 and a lid portion B on the upper portion of the neck portion 4. In A, at least the shoulder portion 3 is formed of a resin obtained by mixing 30% by weight or less of an ethylene-vinyl alcohol copolymer resin with polyethylene having a density of 0.945 or less, and a tube container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29693794A JPH08151057A (en) | 1994-11-30 | 1994-11-30 | Tube container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29693794A JPH08151057A (en) | 1994-11-30 | 1994-11-30 | Tube container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08151057A true JPH08151057A (en) | 1996-06-11 |
Family
ID=17840113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29693794A Pending JPH08151057A (en) | 1994-11-30 | 1994-11-30 | Tube container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08151057A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009274734A (en) * | 2008-05-13 | 2009-11-26 | Key Tranding Co Ltd | Tubular container |
-
1994
- 1994-11-30 JP JP29693794A patent/JPH08151057A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009274734A (en) * | 2008-05-13 | 2009-11-26 | Key Tranding Co Ltd | Tubular container |
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