JPH0235624Y2 - - Google Patents
Info
- Publication number
- JPH0235624Y2 JPH0235624Y2 JP1986073792U JP7379286U JPH0235624Y2 JP H0235624 Y2 JPH0235624 Y2 JP H0235624Y2 JP 1986073792 U JP1986073792 U JP 1986073792U JP 7379286 U JP7379286 U JP 7379286U JP H0235624 Y2 JPH0235624 Y2 JP H0235624Y2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- outer layer
- resin material
- blind lid
- head
- 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.)
- Expired
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 56
- 239000000057 synthetic resin Substances 0.000 claims description 56
- 239000000463 material Substances 0.000 claims description 34
- 238000000576 coating method Methods 0.000 claims description 32
- 239000011248 coating agent Substances 0.000 claims description 29
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- -1 polyethylene Polymers 0.000 claims description 17
- 230000004888 barrier function Effects 0.000 claims description 15
- 239000004698 Polyethylene Substances 0.000 claims description 10
- 229920000573 polyethylene Polymers 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 229920006334 epoxy coating Polymers 0.000 claims 1
- 239000010410 layer Substances 0.000 description 76
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 3
- 239000004840 adhesive resin Substances 0.000 description 3
- 229920006223 adhesive resin Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical compound OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000002775 capsule Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 210000003717 douglas' pouch Anatomy 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229940034610 toothpaste Drugs 0.000 description 1
- 239000000606 toothpaste Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Tubes (AREA)
Description
【考案の詳細な説明】
＜産業上の利用分野＞
本考案は薬品や化粧品、食品又は歯磨剤等のク
リーム状物を収納する押し出しチユーブに関す
る。特に本考案は押し出し成型手段を介して成型
された複数層の成樹脂製胴部の上端に、口部と肩
部とが一体成型され且つ前記口部が薄いシート状
の盲蓋によつて閉鎖されている合成樹脂ヘツドを
結合した盲蓋付き押し出しチユーブの改良に関す
るものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an extruded tube for storing medicines, cosmetics, foods, or cream-like substances such as toothpaste. In particular, the present invention has a mouth portion and a shoulder portion integrally molded on the upper end of a body made of multi-layered plastic molded through extrusion molding means, and the mouth portion is closed by a thin sheet-like blind lid. This invention relates to an improvement of an extruded tube with a blind lid to which a synthetic resin head is attached.
＜従来の技術＞
一般に、押し出しチユーブを製造するのにアル
ミニユームシートの表裏面に合成樹脂被膜を積層
した積層シートを筒状に巻回して胴部を作り、こ
の胴部の上端に、口部と肩部とが一体成型された
合成樹脂ヘツドを結合して製作する方法が広く利
用されている。しかしながらこのようなチユーブ
では前記ヘツドが単質の合成樹脂材料で成型され
ているものであるから、ガスバリア性を防湿性を
ハイレベルで同時に満足させることが出来ない。
何故ならば元来合成樹脂材料はガスバリア性が高
ければ防湿性に欠け、反対に防湿性が高ければガ
スバリア性に欠けるという物性を有するからであ
る。<Prior art> Generally, to manufacture an extruded tube, a body is made by winding a laminated sheet made of an aluminum sheet with synthetic resin coatings laminated on the front and back surfaces into a cylindrical shape, and a mouth part is attached to the upper end of the body. A widely used method is to manufacture a synthetic resin head in which a shoulder portion and a shoulder portion are integrally molded. However, in such a tube, since the head is molded from a single synthetic resin material, it is not possible to simultaneously satisfy gas barrier properties and moisture proof properties at a high level.
This is because synthetic resin materials originally have physical properties such that if they have high gas barrier properties, they lack moisture resistance, and conversely, if they have high moisture resistance, they lack gas barrier properties.
従つて、前記のガスバリア性と防湿性の両者を
満足させる為に従来では第３図に示すような手段
が提供されている。これはアルミニユームシート
の表、裏面にポリエチレン被膜を積層させた積層
アルミニユームシート６をヘツド７の内面、即ち
ヘツドの肩部７ａ及び口部７ｂの内面に沿つて押
し型８により絞り成型し、これにより前記ヘツド
内面全域をカバーすると同時に盲蓋９を形成して
いる。 Therefore, in order to satisfy both the gas barrier property and the moisture proof property, a means as shown in FIG. 3 has been conventionally provided. This is done by drawing a laminated aluminum sheet 6, which has polyethylene coatings laminated on the front and back sides of the aluminum sheet, along the inner surface of the head 7, that is, along the inner surfaces of the shoulder 7a and mouth 7b of the head, using a press die 8. This forms a blind cover 9 while covering the entire inner surface of the head.
＜考案が解決しようとする問題点＞
ところで、このような公知手段では、積層アル
ミニユームシート６をヘツド内面に絞り加工する
際に異常な伸展や折り曲げによつて合成樹脂被膜
層が損傷することがあり、その結果金属層が腐食
してガスバリア性が損なわれると共に、盲蓋部分
も絞り加工によつて伸展されるのでピンホール現
象（ピン先で突き破つたような穴あき現象）の恐
れが多分にあつた。<Problems to be solved by the invention> By the way, with such known means, the synthetic resin coating layer may be damaged due to abnormal stretching or bending when the laminated aluminum sheet 6 is drawn on the inner surface of the head. As a result, the metal layer will corrode and the gas barrier properties will be impaired, and the blind lid will also be stretched during the drawing process, so there is a high risk of pinhole phenomenon (a hole that appears to be punctured by the tip of a pin). It was hot.
更に加えてこの公知手段では次のような重大な
問題点がある。即ち前記積層アルミニユームシー
ト６は絞り加工によつて伸展されるものであるか
ら、これに積層される合成樹脂被膜は伸展性の良
いポリエチレンで形成されている。このポリエチ
レンはアルミニユームに対して接着性がわるく、
接着剤を介在させても前記伸展時に一部剥離する
ことがあり、更にチユーブ内に充填された比較的
浸透性の強い内容物は樹脂被膜層を透過してアル
ミ面との界面に化学的に作用し、その結果、接着
力を著しく低下させたりあるいは剥離させること
がある。この剥離現象が前記盲蓋９の下面部分に
生じたり、又は剥離しやすい状態になると、第４
図に示すように、突起物１０で盲蓋９を突き破る
時に下面被膜層９ａが突起物によつて下方に押し
下げられて盲蓋９を開口することが出来ない。そ
こで本考案はこのような従来手段による問題点を
解決した盲蓋付き押し出しチユーブを提供するこ
とを主たる目的とするものである。 In addition, this known means has the following serious problems. That is, since the laminated aluminum sheet 6 is stretched by drawing, the synthetic resin coating laminated thereon is made of polyethylene having good extensibility. This polyethylene has poor adhesion to aluminum,
Even if an adhesive is used, some parts may peel off during the stretching process, and the relatively permeable contents filled in the tube may pass through the resin coating layer and chemically reach the interface with the aluminum surface. As a result, adhesive strength may be significantly reduced or peeling may occur. If this peeling phenomenon occurs on the lower surface portion of the blind lid 9 or if it becomes easy to peel off, the fourth
As shown in the figure, when the protrusion 10 breaks through the blind cover 9, the lower coating layer 9a is pushed down by the protrusion, making it impossible to open the blind cover 9. Therefore, the main object of the present invention is to provide an extrusion tube with a blind lid that solves the problems caused by the conventional means.
＜問題を解決する為の手段＞
上記の目的を達成する為に本考案は、防湿性を
有する合成樹脂層とガスバリア性を有する合成樹
脂層とを含む少なくとも二重以上の層を有する合
成樹脂製の筒状の胴部と、この胴部の上端に口部
と肩部とが一体成型された合成樹脂製ヘツドを結
合して成る押し出しチユーブであつて、前記ヘツ
ドは外層体と内層体との二つの部材の結合体によ
つて形成され、前記外層体は防湿性を有する合成
樹脂材料で形成され、前記内層体はガスバリア性
を有する合成樹脂材料で形成されており、そして
前記胴部の内面層が前記外層体と同質の合成樹脂
材料で形成されていて、この胴部内面が前記外層
体の肩部に隣接してその接触面が融着されてお
り、更に前記ヘツドの口部上端部分に該口部を閉
じる盲蓋を有し、該盲蓋は薄いアルミニユームシ
ートを基材としてこのアルミニユームシートの上
面に前記ヘツドの外層体に対して融着可能な合成
樹脂被膜が、下面に接着性樹脂塗料による被膜が
積層された薄い複合積層シートで形成されてお
り、更に前記盲蓋はその周縁部分が前記外層体の
受座面と内層体の上端面との間に挟まれ且つ盲蓋
の上面被膜が外層体に融着されている構造とした
ものである。<Means for solving the problem> In order to achieve the above object, the present invention provides a synthetic resin material having at least two or more layers including a synthetic resin layer having moisture-proofing properties and a synthetic resin layer having gas-barrier properties. An extruded tube consisting of a cylindrical body and a synthetic resin head having a mouth and a shoulder integrally molded on the upper end of the body, and the head is composed of an outer layer body and an inner layer body. It is formed by a combination of two members, the outer layer body being made of a synthetic resin material having moisture-proof properties, the inner layer body being made of a synthetic resin material having gas barrier properties, and the inner surface of the body part being made of a synthetic resin material having gas barrier properties. The layer is formed of the same synthetic resin material as the outer layer, the inner surface of the body is adjacent to the shoulder of the outer layer and the contact surface thereof is fused, and the upper end portion of the mouth of the head is has a blind lid that closes the opening, and the blind lid has a thin aluminum sheet as a base material, and a synthetic resin coating that can be fused to the outer layer of the head on the upper surface of the aluminum sheet, and a synthetic resin coating on the lower surface of the aluminum sheet that can be fused to the outer layer of the head. The blind lid is formed of a thin composite laminated sheet on which a coating of adhesive resin paint is laminated, and furthermore, the blind lid has its peripheral portion sandwiched between the receiving surface of the outer layer body and the upper end surface of the inner layer body, and the blind lid is The top coating of the lid is fused to the outer layer.
＜作用＞
上記のごとく構成された押し出しチユーブで
は、合成樹脂によつて成型された胴部１並びにヘ
ツド２が共に防湿性の有する層とガスバリア性の
有する層との積層体によつて形成されているの
で、防湿性とガスバリア性をハイレベルで同時に
満足させることができ、且つ盲蓋５の上面被膜５
ｂはヘツドの外層体２ａと一体的に融着されてい
るのでこの融着された部分で外層体２ａと内層体
２ｂとの微細な通気上の隙間は確実にシールされ
る。又、下面被膜５ｃはアルミニユームに対して
強い接着性をもつウレタン系又はエポキシ含有合
成樹脂で形成されているので、突起物で盲蓋を突
き破る時に下面被膜５ｃが剥離されることなく、
又ポリエチレンのように伸展性がないので極めて
容易に盲蓋を突き破ることができる。<Function> In the extruded tube configured as described above, both the body 1 and the head 2, which are molded from synthetic resin, are formed of a laminate of a moisture-proof layer and a gas-barrier layer. Therefore, it is possible to simultaneously satisfy high levels of moisture resistance and gas barrier properties, and the upper surface coating 5 of the blind lid 5 is
Since b is integrally fused with the outer layer 2a of the head, the fine ventilation gap between the outer layer 2a and the inner layer 2b is reliably sealed at this fused portion. In addition, since the lower surface coating 5c is made of urethane-based or epoxy-containing synthetic resin that has strong adhesion to aluminum, the lower surface coating 5c will not be peeled off when a protrusion breaks through the blind lid.
Also, since it does not have extensibility like polyethylene, it can break through the blind lid extremely easily.
＜実施例＞ 以下図面について本考案の実施例を説明する。<Example> Embodiments of the present invention will be described below with reference to the drawings.
第１図に於いて、符号１はチユーブの胴部であ
つて、防湿性を有する合成樹脂材料、例えばポリ
エチレンからなる内層１ａと、ガスバリア性を有
する合成樹脂材料、例えばエチレンビニルアルコ
ールから成る外層１ｂとの積層体によつて形成さ
れている。前記胴部１は多重押し出し機の複合射
出口から前記内層及び外層を形成する合成樹脂材
料を同時に筒状に押し出すことによつて容易に成
型することが出来る。尚、この胴部１は必ずしも
二層に特定されるものでなく、前記した防湿性を
有する合成樹脂層とガスバリア性を有する合成樹
脂層を含むものであれば、三層若しくはそれ以上
の多層に形成してもよく、これらは前記した多重
押し出し成型機で同時成型することができる。 In FIG. 1, reference numeral 1 denotes the body of the tube, which includes an inner layer 1a made of a moisture-proof synthetic resin material, such as polyethylene, and an outer layer 1b made of a gas-barrier synthetic resin material, such as ethylene vinyl alcohol. It is formed by a laminate of The body 1 can be easily molded by simultaneously extruding the synthetic resin materials forming the inner and outer layers into a cylindrical shape from a multiple injection port of a multiple extruder. The body 1 is not necessarily limited to two layers, but may be three or more layers as long as it includes the above-mentioned synthetic resin layer with moisture-proofing properties and the synthetic resin layer with gas-barrier properties. These can be molded simultaneously using the multiple extrusion molding machine described above.
符号２は下広がり状の肩部３と細く絞られた口
部４とが一体成型された合成樹脂製ヘツドであつ
て、前記胴部１の少し絞られた上端部分が前記ヘ
ツドの肩部３に重ね合わされて隣接する樹脂同士
が融着されている。この融着を効果的に達成する
ために、前記胴部１の内面層１ａはヘツドの肩部
と同質の合成樹脂材料で形成されている。 Reference numeral 2 denotes a synthetic resin head in which a downwardly expanding shoulder portion 3 and a narrowly constricted mouth portion 4 are integrally molded, and the slightly constricted upper end portion of the body portion 1 is the shoulder portion 3 of the head. Adjacent resins are overlapped and fused together. In order to achieve this fusion effectively, the inner surface layer 1a of the body 1 is made of the same synthetic resin material as the shoulder of the head.
而して、前記ヘツド２は外層体２ａと内層体２
ｂとの二つの部材の結合体によつて形成されてお
り、両者はそれぞれ別個に成型されて緊密に嵌め
合わされている。 Thus, the head 2 has an outer layer body 2a and an inner layer body 2.
It is formed by a combination of two members, and the two members are separately molded and tightly fitted together.
前記外層体２ａは防湿性を有する合成樹脂材
料、例えばポリエチレンで成型されており、前記
内層体２ｂはガスバリア性を有する材料、例えば
エチレンビニルアルコールによつて成型されてい
る。 The outer layer body 2a is molded from a synthetic resin material having moisture-proof properties, such as polyethylene, and the inner layer body 2b is molded from a material having gas barrier properties, such as ethylene vinyl alcohol.
尚、前記した防湿性を有する合成樹脂材料とし
て前記のポリエチレンの外にポリプロピレン等も
あり、またガスバリア性を有する合成樹脂材料と
しては前記エチレンビニルアルコールの外にポリ
エチレンテレフタレート、ポリプチレンテレフタ
レート等の熱可塑性合成樹脂又はメラミン、ユリ
ア、フエノール等の熱硬化性合成樹脂等があり、
その他種々のものから選択されよう。 In addition to the above-mentioned polyethylene, there are other synthetic resin materials having moisture-proof properties such as polypropylene, and in addition to the above-mentioned ethylene vinyl alcohol, there are also thermoplastics such as polyethylene terephthalate and polybutylene terephthalate as synthetic resin materials having gas barrier properties. There are synthetic resins and thermosetting synthetic resins such as melamine, urea, and phenol.
Others may be selected from among a variety of others.
而して前記ヘツドの口部上端部分に該口部を閉
じる盲蓋５が形成されている。該盲蓋５は薄いア
ルミニユームシート５ａを基材としてこのアルミ
ニユームシートの上面に前記ヘツドの外層体２ａ
に対して融着可能な合成樹脂材料、例えば前記外
層体２ａと同質の低密度ポリエチレンから成る合
成樹脂被膜５ｂが、下面にはウレタン系合成樹脂
又はエポキシ含有合成樹脂等の接着性樹脂材料又
は塗料による被膜が積層されている。尚前記盲蓋
５の厚みは、その基材となるアルミニユームシー
ト５ａの厚みが20μ〜100μ、上面被膜５ｂの厚み
が10〜50μ、下面被膜５ｃの厚みが３〜15μの間
にあれば良いが、最も好ましい例としては前記ア
ルミニユームシート５ａが40μ、上面被膜５ｂが
20μ、下面被膜５ｃが7μが適切である。 A blind lid 5 is formed at the upper end of the mouth of the head to close the mouth. The blind lid 5 has a thin aluminum sheet 5a as a base material, and the outer layer 2a of the head is placed on the upper surface of the aluminum sheet.
A synthetic resin coating 5b made of a synthetic resin material that can be fused to the outer layer, for example, low-density polyethylene of the same quality as the outer layer 2a, and an adhesive resin material such as urethane-based synthetic resin or epoxy-containing synthetic resin or paint on the lower surface. The coatings are laminated. The thickness of the blind lid 5 may be as long as the aluminum sheet 5a serving as its base material has a thickness of 20 to 100 μ, the top coating 5b has a thickness of 10 to 50 μ, and the bottom coating 5c has a thickness of 3 to 15 μ. However, the most preferable example is that the aluminum sheet 5a is 40μ and the top coating 5b is 40μ.
Appropriately, the thickness is 20μ, and the lower surface coating 5c is 7μ.
更に前記盲蓋５は、その周縁部分が前記外層体
２ａの内面に形成された受座面２a1と内層体２ｂ
の上端面２b1との間に挟着されており且つ盲蓋の
上面被膜５ｂが前記外層体２ｂに融着されてい
る。この場合、前記外層体２ａがポリエチレンで
あり、前記盲蓋の上面被膜５ｂがこれと同質の低
密度ポリエチレンであるので、両者は完全に融合
接着させることができ、これによりこの部分の完
全なシールを達成することが出来る。又前記ヘツ
ド２を組成する際に、盲蓋５を外層体２ａの受座
面２a1上に乗せて内層体２ｂを外層体２ａに嵌め
込むことにより容易に盲蓋５を受座面２a1と内層
体の上端面２b1との間に挟着保持させることが出
来る。又、盲蓋の上面被膜５ａと外層体２ａとの
融着は前記内層体の嵌め込み時にヒーターの加熱
によつて、又は嵌め込み完了後に高周波によつて
融着するようにすればよい。 Further, the blind lid 5 has a peripheral edge portion formed on the inner surface of the outer layer body 2a, and a receiving surface 2a1 formed on the inner surface of the outer layer body 2a, and an inner layer body 2b.
It is sandwiched between the upper end surface 2b1 and the upper surface coating 5b of the blind lid is fused to the outer layer 2b. In this case, since the outer layer 2a is made of polyethylene and the upper surface coating 5b of the blind lid is made of the same low-density polyethylene, the two can be completely fused and bonded, thereby completely sealing this part. can be achieved. Furthermore, when assembling the head 2, the blind cover 5 is easily placed on the seat surface 2a1 of the outer layer body 2a by fitting the inner layer body 2b into the outer layer body 2a. and the upper end surface 2b1 of the inner layer body. Further, the upper surface coating 5a of the blind lid and the outer layer 2a may be fused by heating with a heater when the inner layer is fitted, or by high frequency after the fitting is completed.
尚、前記第１図で示した実施例では、ヘツド２
の外層体２ａと胴部１の被膜１ａとは隣接面積が
多くしかも同じ材質で形成されているため両者の
接着性は極めて高いが、内層体２ｂと前記胴部の
被膜１ａとは接触面積が非常に少なくしかも異な
る樹脂材料で形成されている為この部分の接着性
が弱く、従つてもし圧力の高いガスが発生するよ
うな内容物を収納した場合にはチユーブ内に発生
した高圧ガスによつて胴部が膨張して外層体２ａ
を外方向に拡張する作用が働く。これにより外層
体２ａと内層体２ｂとの間に通気可能な隙間が生
じ、この隙間からガスが上方に逃げそして外層体
の肉部を透過して外部に漏出しガスバリア性が損
なわれることになる。第２図で示した実施例は前
記のような点を考慮して構成されたものであつ
て、ヘツド２の内層体２ｂの下端にフランジ部２
b2を設け、このフランジ部の上面にリング状の嵌
合凸部２b3を形成すると共に、、記外層体２ａの
下端面に前記嵌合凸部に緊密に嵌合する嵌合凹部
２a2を設けて、これら凹凸をが緊密に嵌合するよ
うに形成したものである。この第２図で示した実
施例によれば外層体２ａと内層体２ｂとは前記凹
凸部の緊密な嵌合によつて堅く結合されているの
で、前記のような内圧による膨張作用をうけても
外層体と内層体との間が広がるようなことがな
く、これによりガスバリア性を確実に保持するこ
とができよう。 In the embodiment shown in FIG. 1, the head 2
Since the outer layer 2a and the coating 1a of the body 1 have a large adjoining area and are made of the same material, the adhesion between them is extremely high, but the contact area between the inner layer 2b and the coating 1a of the body 1 is very high. Since there are very few and different resin materials, the adhesion of this part is weak, so if the contents that generate high pressure gas are stored, the high pressure gas generated inside the tube will cause damage. The body expands and the outer layer 2a
The effect is to expand outward. This creates a gap that allows ventilation between the outer layer 2a and the inner layer 2b, and gas escapes upward through this gap, passes through the flesh of the outer layer, and leaks to the outside, impairing the gas barrier properties. . The embodiment shown in FIG. 2 is constructed taking the above points into consideration, and has a flange portion 2 at the lower end of the inner layer body 2b of the head 2.
b 2 is provided, and a ring-shaped fitting protrusion 2b 3 is formed on the upper surface of this flange portion, and a fitting recess 2a 2 that tightly fits into the fitting protrusion is formed on the lower end surface of the outer layer 2a. , and these irregularities are formed so that they fit tightly together. According to the embodiment shown in FIG. 2, the outer layer 2a and the inner layer 2b are firmly connected by the tight fitting of the uneven portions, so that they are not subject to the expansion action due to the internal pressure as described above. Also, the space between the outer layer and the inner layer does not widen, and thus gas barrier properties can be maintained reliably.
＜考案の効果＞
本考案は上記の構成によつて下記のような新規
な効果がある。<Effects of the invention> The invention has the following novel effects due to the above configuration.
合成樹脂によつて成型されたヘツド２が防湿
性の有する外層体２ａとガスバリア性の有する
内層体２ｂとの結合体によつて形成され、薄い
金属シートの表裏面に合成樹脂被膜を積層した
積層シートによつて形成されたチユーブ胴部の
内面被膜が前記外層体と同質の合成樹脂材料で
形成されていて、この胴部内面が前記外層体の
肩部に隣接してその接触面が融着されているの
で、ヘツドと胴部との結合が確実にできると共
に、防湿性とガスバリア性をハイレベルで同時
に満足させることがでる。 A head 2 molded from synthetic resin is formed by a combination of an outer layer 2a having moisture-proof properties and an inner layer 2b having gas barrier properties, and is a laminated structure in which a synthetic resin coating is laminated on the front and back surfaces of a thin metal sheet. The inner surface coating of the tube body formed by the sheet is formed of the same synthetic resin material as the outer layer, and the inner surface of the body is adjacent to the shoulder of the outer layer and their contact surfaces are fused. As a result, the head and body can be reliably connected, and a high level of moisture-proofing and gas-barrier properties can be achieved at the same time.
盲蓋５はアルミニユームシートの上面にヘツ
ドの外層体に対して融着可能な合成樹脂被膜
が、下面に接着性樹脂塗料による被膜が積層さ
れた薄い複合積層シートで形成され、この上面
被膜５ｂが外層体２ａと一体的に融着されてい
るので外部に通じる外層体と内層体との隙間は
この融着された部分で確実にシールされると共
に、下面被膜５ｃがアルミニユームに対して強
い接着性をもつウレタン系又はエポキシ含有合
成樹脂で形成されているので、突起物で盲蓋を
突き破る時に下面被膜５ｃが剥離されることな
く、又ポリエチレンのように伸展性がないので
極めて容易に盲蓋を突き破ることができる。 The blind lid 5 is formed of a thin composite laminated sheet in which the upper surface of an aluminum sheet is laminated with a synthetic resin coating that can be fused to the outer layer of the head, and the lower surface is laminated with a coating made of adhesive resin paint. is integrally fused with the outer layer 2a, so the gap between the outer layer and the inner layer leading to the outside is reliably sealed at this fused portion, and the lower surface coating 5c has strong adhesion to the aluminum. Since it is made of urethane-based or epoxy-containing synthetic resin, the lower coating 5c will not be peeled off when a protrusion breaks through the blind lid, and since it is not extensible like polyethylene, it can be removed very easily. can break through.
盲蓋の上面被膜が外層体に融着可能な合成樹
脂材料で形成されていて外層体に対して完全に
融着されており、且つ盲蓋の周縁部分が前記外
層体の受座面と内層体の上端面との間に挟持さ
れているから盲蓋を安定よく強固に保持するこ
とができる。 The upper surface coating of the blind lid is formed of a synthetic resin material that can be fused to the outer layer body, and is completely fused to the outer layer body, and the peripheral portion of the blind lid is made of a synthetic resin material that can be fused to the outer layer body, and the peripheral portion of the blind lid is made of a synthetic resin material that can be fused to the outer layer body. Since it is sandwiched between the cover and the upper end surface of the body, the blind cover can be held stably and firmly.
更に本考案では、従来のようにヘツド内面に
積層アルミニユームシートを絞り加工によつて
伸展成型するものでないから、所頭に述べたよ
うに異常な伸展や折曲によつて樹脂被膜層が損
傷して金属層が腐食するような恐れはなく、こ
れにより内容物の保護を確実に達成でき、更に
は盲蓋は絞り加工によつて伸展されていないか
ら前記したピンホール現象のおそれは全くな
い。 Furthermore, in the present invention, unlike conventional methods, the laminated aluminum sheet is not stretch-molded on the inner surface of the head by drawing, so as mentioned above, the resin coating layer is not damaged due to abnormal stretching or bending. There is no fear that the metal layer will corrode, thereby ensuring the protection of the contents, and furthermore, since the blind lid is not stretched by drawing, there is no risk of the pinhole phenomenon described above. .
第１図は本考案の実施例を示す断面図、第２図
は本考案の他の実施例を示す断面図、第３図は従
来例を示す断面図、第４図は従来例の盲蓋の開口
作業時の状態を示す断面図である。
１はチユーブの胴部、１ａは内層、１ｂは外
層、２はヘツド、２ａは外層体、２ｂは内層体、
２a1は受け座面、２a2は合凹部、２b1は内層体の
上端面、２b2はフランジ部、２b3は嵌合凸部、３
は肩部、４は口部、５は盲蓋、５ａは盲蓋のアル
ミニユームシート、５ｂは盲蓋の上面被膜、５ｃ
は盲蓋の下面被膜である。
Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a sectional view showing another embodiment of the invention, Fig. 3 is a sectional view showing a conventional example, and Fig. 4 is a blind lid of a conventional example. FIG. 3 is a cross-sectional view showing the state during opening work. 1 is the body of the tube, 1a is the inner layer, 1b is the outer layer, 2 is the head, 2a is the outer layer body, 2b is the inner layer body,
2a 1 is the receiving seat surface, 2a 2 is the mating recess, 2b 1 is the upper end surface of the inner layer body, 2b 2 is the flange part, 2b 3 is the fitting convex part, 3
is the shoulder, 4 is the mouth, 5 is the blind lid, 5a is the aluminum sheet of the blind lid, 5b is the upper surface coating of the blind lid, 5c
is the lower capsule of the cul-de-sac.
Claims (1)
有する合成樹脂層とを含む少なくとも二重以上
の層を有する合成樹脂製の筒状の胴部と、この
胴部の上端に口部と肩部とが一体成型された合
成樹脂製ヘツドを結合して成る押し出しチユー
ブであつて、 前記ヘツドは外層体と内層体との二つの部材
の結合体によつて形成され、 前記外層体は防湿性を有する合成樹脂材料で
形成され、前記内層体はガスバリア性を有する
合成樹脂材料で形成されており、そして前記胴
部の内面層が前記外層体と同質の合成樹脂材料
で形成されていて、この胴部内面が前記外層体
の肩部に隣接してその接触面が融着されてお
り、 更に前記ヘツドの口部上端部分に該口部を閉
じる盲蓋を有し、該盲蓋は薄いアルミニユーム
シートを基材としてこのアルミニユームシート
の上面に前記ヘツドの外層体に対して融着可能
な合成樹脂被膜が、下面にアルミニユームに対
して強い接着性をもつウレタン系又はエポキシ
含有合成樹脂による被膜が積層された薄い複合
積層シートで形成されており、更に前記盲蓋は
その周縁部分が前記外層体の受座面と内層体の
上端面との間に挟まれ且つ盲蓋の上面被膜が外
層体に融着されていることを特徴とする、盲蓋
付き押し出しチユーブ。 前記第項に記載のチユーブに於いて、前記
防湿性を有する合成樹脂材料はポリエチレン又
はポリプロピレンから選択され、前記ガスバリ
ア性を有する合成樹脂材料はポリエチレンテレ
フタレート、ポリプチレンテレフタレート等の
熱可塑性合成樹脂材料又はメラミン、ユリア、
フエノール等の熱硬化性合成樹脂材料から選択
される、盲蓋付き押し出しチユーブ。[Claims for Utility Model Registration] A cylindrical body made of synthetic resin having at least two or more layers including a synthetic resin layer with moisture-proof properties and a synthetic resin layer with gas barrier properties, and the upper end of this body An extruded tube formed by combining a synthetic resin head with a mouth part and a shoulder part integrally molded, the head being formed by a combination of two members, an outer layer body and an inner layer body, The outer layer body is formed from a synthetic resin material having moisture-proof properties, the inner layer body is formed from a synthetic resin material having gas barrier properties, and the inner layer of the body is formed from a synthetic resin material of the same quality as the outer layer body. The inner surface of the body is adjacent to the shoulder of the outer layer and the contact surface thereof is fused, and the head further has a blind lid at the upper end portion of the mouth for closing the mouth. The blind cover is made of a thin aluminum sheet as a base material, and the upper surface of the aluminum sheet has a synthetic resin coating that can be fused to the outer layer of the head, and the lower surface has a urethane-based or epoxy coating that has strong adhesion to aluminum. The blind lid is formed of a thin composite laminated sheet laminated with a coating made of synthetic resin, and furthermore, the blind lid has its peripheral edge portion sandwiched between the receiving surface of the outer layer body and the upper end surface of the inner layer body, and the blind lid An extruded tube with a blind lid, characterized in that the upper surface coating of is fused to the outer layer body. In the tube described in the above item, the synthetic resin material having moisture-proofing properties is selected from polyethylene or polypropylene, and the synthetic resin material having gas-barrier properties is a thermoplastic synthetic resin material such as polyethylene terephthalate, polybutylene terephthalate, etc. melamine, urea,
Extruded tube with blind lid selected from thermoset synthetic resin material such as phenol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986073792U JPH0235624Y2 (en) | 1986-05-16 | 1986-05-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986073792U JPH0235624Y2 (en) | 1986-05-16 | 1986-05-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6313847U JPS6313847U (en) | 1988-01-29 |
| JPH0235624Y2 true JPH0235624Y2 (en) | 1990-09-27 |
Family
ID=30918436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986073792U Expired JPH0235624Y2 (en) | 1986-05-16 | 1986-05-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0235624Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538262A (en) * | 1978-09-04 | 1980-03-17 | Toppan Printing Co Ltd | Collapsible tube and its preparation |
-
1986
- 1986-05-16 JP JP1986073792U patent/JPH0235624Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538262A (en) * | 1978-09-04 | 1980-03-17 | Toppan Printing Co Ltd | Collapsible tube and its preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6313847U (en) | 1988-01-29 |
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