JPH01139340A - Manufacture of cylindrical container - Google Patents
Manufacture of cylindrical containerInfo
- Publication number
- JPH01139340A JPH01139340A JP62297697A JP29769787A JPH01139340A JP H01139340 A JPH01139340 A JP H01139340A JP 62297697 A JP62297697 A JP 62297697A JP 29769787 A JP29769787 A JP 29769787A JP H01139340 A JPH01139340 A JP H01139340A
- Authority
- JP
- Japan
- Prior art keywords
- heat sealing
- end plate
- cylindrical container
- sealing seat
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 13
- -1 polyethylene Polymers 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000004677 Nylon Substances 0.000 abstract description 3
- 239000004698 Polyethylene Substances 0.000 abstract description 3
- 239000004743 Polypropylene Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 229920001778 nylon Polymers 0.000 abstract description 3
- 229920000573 polyethylene Polymers 0.000 abstract description 3
- 229920001155 polypropylene Polymers 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 3
- 238000005452 bending Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 230000037303 wrinkles Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、円筒容器の製造方法に関し、例えば、円筒
容器、特にドラム缶、ベール缶、−斗缶などの容器内に
装填して使用するのに有用な円筒容器の製造方法に関す
る。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for manufacturing a cylindrical container, for example, a method for manufacturing a cylindrical container, particularly a container such as a drum can, bale can, or can. The present invention relates to a method for manufacturing a cylindrical container useful for.
（従来の技術）
従来、ドラム缶、ベール缶、−斗缶などの容器の内袋な
どに使用されている円筒状容器の製造方法は、第３図に
示すようにシャーレ状に形成した下端板２の周縁を円筒
状容器の側壁部３の下部外周面と重ね合わせ、重合部を
熱接着した後、同様にして上端板１を側壁部３の上部外
周部に熱接着するものであった。しかしながら、これら
の方法では、熱接着部分にしわが出来やすく外観が悪い
ばかりでなく、強度低下にもつながるという欠点があっ
た。他方、熱接着すべき上端板と円筒状容器本体の上部
外周部とを複数個の加熱部分に区分し、順次加熱融着す
る方法が考えられ、この場合には前記したようなしわの
発生は防止できるが、その手順はきわめて複雑である。(Prior Art) Conventionally, a method for manufacturing a cylindrical container used as the inner bag of containers such as drum cans, bale cans, and canisters includes a lower end plate 2 formed in the shape of a petri dish, as shown in FIG. The periphery of the cylindrical container was overlapped with the lower outer circumferential surface of the side wall 3 of the cylindrical container, the overlapping portion was thermally bonded, and then the upper end plate 1 was similarly thermally bonded to the upper outer circumferential portion of the side wall 3. However, these methods have the drawback that not only are the thermally bonded parts prone to wrinkles, but the appearance is poor, and the strength is also reduced. On the other hand, it is possible to consider a method in which the upper end plate to be thermally bonded and the upper outer periphery of the cylindrical container body are divided into a plurality of heated portions and heated and fused one after another.In this case, the occurrence of wrinkles as described above can be avoided. It can be prevented, but the procedure is extremely complex.
（解決すべき問題点）
本発明はこのような欠点を改良し、−度の加熱で完全な
融着できるような方法について種々検討した結果、本発
明を完成するに至ったもので、本発明の目的は一度の加
熱によって、熱接着部に皺のない極めて強固に熱接着し
た円筒容器を製造する方法を提供するにある。(Problems to be Solved) The present invention has been completed as a result of various studies on a method that can improve these drawbacks and achieve complete fusion with -degree heating. The object of the present invention is to provide a method for manufacturing a cylindrical container that is extremely strongly thermally bonded without wrinkles in the thermally bonded portion by heating once.
（問題を解決するための手段）
すなわち、円筒状側壁部の一端に下端板を、ついで他端
に上端板をそれぞれ熱接着する工程を含む円筒容器の製
造方法において、円筒状側壁部の下部もしくは上部の少
なくとも一方の周縁部を外方に屈曲して熱接着座部を形
成し、下端板もしくは上端板を前記熱接着座部に熱接着
したことを特徴とする円筒容器の製造方法である。本発
明で使用する円筒状側壁部はシート状物を貼着したもの
を用いてもよいが、通常インフレーション法若しくは押
出法によって得たチューブを使用することが好ましく、
その厚みは容器の大きさによって異なるが約３０μ〜５
００μであり、その径はＬｏｏｍ／ｍ〜１０００ｍ／ｍ
である。上端板若しくは下端板として使用するものはポ
リエチレン、エチレン−酢酸ビニル共重合体、ポリプロ
ピレンなどの単体フィルムやナイロン／ポリエチレン、
ナイロン／ポリプロピレンなどの複合シートである。そ
して、本発明の方法において、上端板もしくは下端板と
熱接着座部とを熱接着するに当っては円筒状側壁部の外
周に接するようにリング状金型を配置し、上端板若しく
は下端板と熱接着座部との重合部をリング状金型とヒー
トシール用治具とではさんで加熱加圧して接合すること
が好ましい。そして、この製造方法では製造された円筒
容器は単にリング状金型の中央部よりとり出すことがで
きる。(Means for Solving the Problem) That is, in a method for manufacturing a cylindrical container that includes a step of thermally bonding a lower end plate to one end of the cylindrical side wall and then an upper end plate to the other end, the lower end of the cylindrical side wall or A method for producing a cylindrical container, characterized in that at least one peripheral edge of the upper part is bent outward to form a heat-bonded seat, and a lower end plate or an upper end plate is heat-bonded to the heat-bonded seat. The cylindrical side wall used in the present invention may be a sheet-like material attached to it, but it is usually preferable to use a tube obtained by an inflation method or an extrusion method.
The thickness varies depending on the size of the container, but is approximately 30μ to 5μ.
00μ, and its diameter is Loom/m ~ 1000m/m
It is. The materials used as the upper end plate or lower end plate include single films such as polyethylene, ethylene-vinyl acetate copolymer, polypropylene, nylon/polyethylene,
It is a composite sheet of nylon/polypropylene, etc. In the method of the present invention, when thermally bonding the upper end plate or the lower end plate and the heat bonding seat, a ring-shaped mold is arranged so as to be in contact with the outer periphery of the cylindrical side wall, and the upper end plate or the lower end plate is It is preferable to heat and press the overlapping portion of the heat-bonded seat and the heat-bonded seat between a ring-shaped mold and a heat-sealing jig to join them. In this manufacturing method, the manufactured cylindrical container can be simply taken out from the center of the ring-shaped mold.
また、リング状金型は二分割ないしは三分割できるよう
にすることも可能で、この場合には、円筒容器はリング
状金型を分割してとり出すことができる。Further, the ring-shaped mold can be divided into two or three parts, and in this case, the cylindrical container can be taken out by dividing the ring-shaped mold.
次に、本発明の実施例を図面にもとすいて詳細に説明す
る。Next, embodiments of the present invention will be described in detail with reference to the drawings.
（実施例）
第１図は本発明に係る製造方法の縦断面図である。円筒
状側壁部３の両端を外方に屈曲して熱接着座部４を設け
、円筒状側壁部の両端の熱接着座部にそれぞれに上端板
１及び下端板２を当接し、側−３＝
壁部の外周に接するようにして、リング状の金型５を配
置し、熱接着座部４と上端板１又は下端板２の重合部を
挟むようにリング状金型５とヒートシール用治具６によ
って加熱加圧して熱接着を行い上端板もしくは下端板と
熱接着部とを一体とする。(Example) FIG. 1 is a longitudinal sectional view of the manufacturing method according to the present invention. Both ends of the cylindrical side wall 3 are bent outward to provide thermal bonding seats 4, and the upper end plate 1 and the lower end plate 2 are brought into contact with the thermal bonding seats 4 at both ends of the cylindrical side wall, respectively. = A ring-shaped mold 5 is arranged so as to be in contact with the outer periphery of the wall, and a ring-shaped mold 5 and a heat-sealing mold 5 are arranged so as to sandwich the overlapping part of the heat-adhesive seat 4 and the upper end plate 1 or the lower end plate 2. Thermal bonding is performed by heating and pressurizing using the jig 6 to integrate the upper end plate or the lower end plate and the thermally bonded portion.
得られた円筒状容器を第２図に示す。しかして、上端板
もしくは下端板と熱接着座部との接合部７が形成される
。製造された円筒状容器は柔軟性を有するのでリング状
金型の中央部より引き上げることによって容易に取り出
すことができる。The obtained cylindrical container is shown in FIG. Thus, a joint 7 between the upper end plate or the lower end plate and the thermal bonding seat is formed. Since the manufactured cylindrical container has flexibility, it can be easily taken out by pulling it up from the center of the ring-shaped mold.
（効果）
上述のように、本発明は円筒状側壁部の両端部に熱接着
座部を設け、これに上端板又は下端板を当接するのであ
るから上端板又は下端板を予め成型する必要はなく単に
フィルム状シートを使用すればよく、また、側壁部とし
て収縮加工を施したチューブ状フィルムを使用した場合
には容易に外方に屈曲し容易に熱接着座部を成型するこ
とが出来や。そして、本発明にあっては単にリング状金
型及びヒートシール用治具で加熱加工することにより容
易に目的とする円筒容器を製造することができる。(Effects) As described above, in the present invention, heat-adhesive seats are provided at both ends of the cylindrical side wall portion, and the upper end plate or the lower end plate is brought into contact with these seats, so there is no need to mold the upper end plate or the lower end plate in advance. In addition, if a shrink-treated tubular film is used as the side wall, it can be easily bent outward and a heat-bonded seat can be easily formed. . According to the present invention, the desired cylindrical container can be easily manufactured by simply performing heat processing using a ring-shaped mold and a heat-sealing jig.
第１図は本発明に係る円筒状容器の製造方法の縦断面図
であり、第２図は本発明の方法によって得られた円筒状
容器の側面図、第３図は従来の円筒状容器の製造方法の
縦断面図である。
１・・・上端板 ２・・・下端板３・・・円筒状
側壁部 ４・・・熱接着座部５・・・リング状金型 ６
・・・ヒートシール用治具７・・・接合部FIG. 1 is a longitudinal cross-sectional view of the method for manufacturing a cylindrical container according to the present invention, FIG. 2 is a side view of a cylindrical container obtained by the method of the present invention, and FIG. 3 is a side view of a conventional cylindrical container. FIG. 3 is a longitudinal cross-sectional view of the manufacturing method. 1... Upper end plate 2... Lower end plate 3... Cylindrical side wall part 4... Heat bonding seat part 5... Ring-shaped mold 6
...Heat sealing jig 7...Joint part
Claims (1)
板をそれぞれ熱接着する工程を含む円筒容器の製造方法
において、円筒状側壁部の下部もしくは上部の少なくと
も一方の周縁部を外方に屈曲して熱接着座部を形成し、
下端板もしくは上端板を前記熱接着座部に熱接着したこ
とを特徴とする円筒容器の製造方法。 ２、円筒状側壁部の外周にリング状金型を当てて上端板
若しくは下端板と熱接着座部とを熱接着することを特徴
とする特許請求の範囲第１項記載の円筒容器の製造方法
。[Scope of Claims] 1. A method for manufacturing a cylindrical container including the step of thermally bonding a lower end plate to one end of the cylindrical side wall and then an upper end plate to the other end, wherein at least the lower or upper part of the cylindrical side wall is one peripheral edge is bent outward to form a thermally bonded seat;
A method for manufacturing a cylindrical container, characterized in that a lower end plate or an upper end plate is thermally bonded to the thermally bonded seat. 2. The method for manufacturing a cylindrical container according to claim 1, which comprises applying a ring-shaped mold to the outer periphery of the cylindrical side wall portion to thermally bond the upper end plate or the lower end plate to the thermally bonded seat portion. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62297697A JPH01139340A (en) | 1987-11-27 | 1987-11-27 | Manufacture of cylindrical container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62297697A JPH01139340A (en) | 1987-11-27 | 1987-11-27 | Manufacture of cylindrical container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01139340A true JPH01139340A (en) | 1989-05-31 |
Family
ID=17849985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62297697A Pending JPH01139340A (en) | 1987-11-27 | 1987-11-27 | Manufacture of cylindrical container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01139340A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150006008A (en) * | 2012-05-02 | 2015-01-15 | 어드밴스드 테크놀러지 머티리얼즈, 인코포레이티드 | Manufacturing method for generally cylindrical three-dimensional conformal liners |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61142140A (en) * | 1984-12-03 | 1986-06-30 | 昭和電工株式会社 | Can |
-
1987
- 1987-11-27 JP JP62297697A patent/JPH01139340A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61142140A (en) * | 1984-12-03 | 1986-06-30 | 昭和電工株式会社 | Can |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150006008A (en) * | 2012-05-02 | 2015-01-15 | 어드밴스드 테크놀러지 머티리얼즈, 인코포레이티드 | Manufacturing method for generally cylindrical three-dimensional conformal liners |
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