JPH0333579B2 - - Google Patents
Info
- Publication number
- JPH0333579B2 JPH0333579B2 JP14661983A JP14661983A JPH0333579B2 JP H0333579 B2 JPH0333579 B2 JP H0333579B2 JP 14661983 A JP14661983 A JP 14661983A JP 14661983 A JP14661983 A JP 14661983A JP H0333579 B2 JPH0333579 B2 JP H0333579B2
- Authority
- JP
- Japan
- Prior art keywords
- resistant
- water
- thin film
- blank sheet
- barrier thin
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 230000004888 barrier function Effects 0.000 claims description 14
- 229920005992 thermoplastic resin Polymers 0.000 claims description 13
- 239000010409 thin film Substances 0.000 claims description 13
- 239000011087 paperboard Substances 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 239000011888 foil Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 description 24
- 239000000123 paper Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
Landscapes
- Making Paper Articles (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Cartons (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は紙製液体容器胴部用ブランクシートに
関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a blank sheet for the body of a paper liquid container.
（従来技術）
第１図は本発明の対象の紙製液体容器の一例の
正面断面図である。胴部１、蓋板２、底板３から
なる。胴部１は円形、又は方形断面に成形され重
合部４で貼合されている。該重合部４と蓋板２、
或いは底板３とで構成される部分が、図のＡ、又
はＢの部分であり、その貼合部分に外部へ通じる
ピンホールなどが発生し易い。(Prior Art) FIG. 1 is a front sectional view of an example of a paper liquid container to which the present invention is applied. It consists of a body part 1, a lid plate 2, and a bottom plate 3. The body part 1 is formed into a circular or square cross section and is bonded together at an overlapping part 4. the overlapping part 4 and the lid plate 2,
Alternatively, the part formed with the bottom plate 3 is part A or B in the figure, and pinholes leading to the outside are likely to occur in the bonded part.
以下その点について詳しく説明する。 This point will be explained in detail below.
第２図は第１図のａ−ａ断面矢視の部分平面断
面図である。胴部１は重合部４で貼合されてい
る。図イにおいて容器内側に面する胴部１の端縁
は紙の断面を保護するためにスカイブ加工の上折
り返えされ、半円形断面を形成しており、底板３
との間で間隙５が出来る。図ロは胴部１の容器内
側に面する側の端縁が斜めにカツトされており、
間隙５は図イの場合より小さい。該端縁の先の完
全に尖つた形状に加工することは加工が難しいの
でやられていない。先端が一直線にならなかつた
り、切削面が薄いために波うつたり、或いはアル
ミ箔を折り返す時紙の先端が一緒に折れ曲つたり
する。 2 is a partial plan sectional view taken along the line aa in FIG. 1. FIG. The body portion 1 is bonded together at an overlapping portion 4. In Figure A, the edge of the body 1 facing the inside of the container is skived and folded back to form a semicircular cross section to protect the cross section of the paper, and the bottom plate 3
A gap 5 is created between the two. In Figure B, the edge of the body 1 facing the inside of the container is cut diagonally.
The gap 5 is smaller than that in Figure A. It is difficult to process the end edge into a completely pointed shape, so this has not been done. The edges may not be in a straight line, the cutting surface may be wavy because it is thin, or the edges of the paper may bend together when folding back the aluminum foil.
従来上記間隙５は避け難いものとして、胴部１
と底板３又は蓋板２とをヒートシールするため各
部材表面にラミネートされている熱可塑性樹脂層
を厚くし、又ヒートシール時の加熱温度を上げ、
又はヒートシール圧を強くして、上記間隙５を熱
溶融樹脂で埋め、或いは押しつぶす方法がとられ
てきた。 Conventionally, the above-mentioned gap 5 is considered to be unavoidable, and the body 1
In order to heat seal the bottom plate 3 or the lid plate 2, the thermoplastic resin layer laminated on the surface of each member is thickened, and the heating temperature during heat sealing is increased.
Alternatively, a method has been adopted in which the gap 5 is filled or crushed with hot molten resin by increasing the heat sealing pressure.
このような対策をとつても、なお間隙５に起因
するトラブルは完全に解消されるものではない。
熱可塑性樹脂を必要以上に加熱し溶融すると、冷
去し十分な接着性が出るまでに時間がかかり、取
扱いが不適当であるとシール不良を起す。又熱可
塑性樹脂が高温溶融すると、粘度が下がり高いヒ
ートシール圧と相まつて樹脂層の薄い部分が出来
る。又樹脂が流れ出るトラブルが発生する。され
にアルミ箔層を有するガスバリア性の良い容器の
場合、熱可塑性樹脂層同士の厚い貼合層の低いガ
スバリア性で容器の性能が制約を受ける。 Even if such measures are taken, the trouble caused by the gap 5 cannot be completely eliminated.
If the thermoplastic resin is heated and melted more than necessary, it will take time to cool down and develop sufficient adhesion, and improper handling will result in seal failure. Furthermore, when a thermoplastic resin is melted at a high temperature, its viscosity decreases, which, together with the high heat sealing pressure, creates a thin portion of the resin layer. Also, a problem occurs in which the resin flows out. On the other hand, in the case of containers with good gas barrier properties having an aluminum foil layer, the performance of the container is limited by the low gas barrier properties of the thick bonding layer between thermoplastic resin layers.
（発明の目的）
本発明の目的は胴部１と底板３或いは蓋板２と
で形成される間隙５が小さくなる、ガスバリア性
のよい紙製容器の胴部用ブランクシートの提供に
ある。(Object of the Invention) An object of the present invention is to provide a blank sheet for the body of a paper container with good gas barrier properties, in which the gap 5 formed between the body 1 and the bottom plate 3 or the lid plate 2 is reduced.
（発明の構成）
本発明の液体容器胴部用ブランクシートは、少
くとも板紙と、その裏面のアルミ箔に熱可塑性樹
脂ライニングした耐水・ガスバリア性薄膜層とか
らなり、該ブランクシートの胴部重合部に対応す
る一端縁にあつて上記耐水・ガスバリア性薄膜層
が若干突出し、該突出縁が表側に折り返えされ
て、耐水・ガスバリア性薄膜層同士の折り重ね部
を形成しているブランクシートである。(Structure of the Invention) The blank sheet for the body of a liquid container of the present invention is composed of at least paperboard and a water-resistant and gas barrier thin film layer on the back side of which is aluminum foil lined with thermoplastic resin, and the body of the blank sheet is polymerized. A blank sheet in which the above-mentioned water-resistant/gas-barrier thin film layer slightly protrudes from one edge corresponding to the part, and the protruding edge is folded back to the front side to form a folded part between the water-resistant/gas-barrier thin film layers. It is.
（実施例）
以下具体例を中心として本発明について詳述す
る。(Example) The present invention will be described in detail below, focusing on specific examples.
第３図は本発明の胴部用ブランクシートを第１
図の如き容器に適用した時の効果の説明図であ
り、該図は第１図のａ−ａ矢視の部分平面断面を
示す。胴部１は底板１１と、耐水・ガスバリア性
薄膜層１２と、該耐水・ガスバリア性薄膜層１２
の突出縁１３とからなる。突出縁１３は図示のよ
うに表側に折り返えされヒートシールされてい
る。ブランクシートが筒状に形成され、その両端
縁が重ね合わされ貼合され、重合部４が形成され
る際、上記突出縁１３も図の上方の耐水・ガスバ
リア性薄膜層１２に加圧貼合される。 Figure 3 shows the first blank sheet for the trunk of the present invention.
FIG. 2 is an explanatory view of the effect when applied to the container shown in the figure, and the figure shows a partial plane cross section taken along the line a-a in FIG. 1. The body 1 includes a bottom plate 11, a water-resistant/gas barrier thin film layer 12, and a water-resistant/gas barrier thin film layer 12.
and a protruding edge 13. The protruding edge 13 is folded back to the front side and heat-sealed as shown. A blank sheet is formed into a cylindrical shape, and when the both edges thereof are overlapped and laminated to form the overlapping part 4, the protruding edge 13 is also pressurized and laminated to the water-resistant/gas barrier thin film layer 12 in the upper part of the figure. Ru.
図において、底板３と胴部１とで形成される間
隙５の空間は突出縁１３が存在するために大幅に
縮小されている。 In the figure, the space of the gap 5 formed between the bottom plate 3 and the body 1 is significantly reduced due to the presence of the protruding edge 13.
第２図ロと比較すると本発明の効果は明らかで
ある。さらに突出縁１３はアルミ箔と熱可塑性樹
脂ライニング層とからなつており、突出縁１３が
表側に折り返えされることによりアルミ箔先端の
断面が内溶液から保護され、合わせて該突出縁１
３が図の上方の耐水・ガスバリア性薄膜層１２に
加圧貼合されているため板紙１１の端面も又、内
溶液から保護されている。突出縁１３はアルミ箔
を主体としているため折り返し加工などは極めて
容易である。 The effect of the present invention is clear when compared with FIG. 2B. Further, the protruding edge 13 is made of aluminum foil and a thermoplastic resin lining layer, and by folding the protruding edge 13 back to the front side, the cross section of the tip of the aluminum foil is protected from the internal solution, and the protruding edge 1
3 is bonded under pressure to the water-resistant/gas-barrier thin film layer 12 in the upper part of the figure, so the end surface of the paperboard 11 is also protected from the internal solution. Since the protruding edge 13 is mainly made of aluminum foil, it is extremely easy to fold it back.
第４図は本発明の胴部用ブランクシートの他の
実施例を示す。突出縁１３を有する端縁の部分拡
大断面図である。 FIG. 4 shows another embodiment of the blank sheet for the trunk of the present invention. FIG. 3 is a partially enlarged sectional view of an edge having a protruding edge 13;
図イで、本発明のブランクシートは板紙１１
と、その下層の耐水・ガスバリア性薄膜層１２、
及び板紙１１の上層の熱可塑性樹脂ラミネート層
１５との３層からなる。上記耐水・ガスバリア性
薄膜層１２はアルミ箔１６とその両面の熱可塑性
樹脂ラミネート層１７，１８とからなつており、
突出縁１３を形成している。板紙１１が米坪200
〜300ｇ／m2の薄い場合は、図のように先端を斜
め加工しなくとも、容器に加工した際間隙５（第
３図参照）はあまり大きくならない。板紙１１の
部分は他の材料との積層材であつてもよい。 In Figure A, the blank sheet of the present invention is paperboard 11.
and a water-resistant/gas barrier thin film layer 12 below it,
and a thermoplastic resin laminate layer 15 on top of the paperboard 11. The water-resistant/gas barrier thin film layer 12 is composed of an aluminum foil 16 and thermoplastic resin laminate layers 17 and 18 on both sides of the aluminum foil 16,
A protruding edge 13 is formed. Paperboard 11 is 200m2
If the material is thin (~300 g/m 2 ) , the gap 5 (see FIG. 3) will not become very large when it is processed into a container, even if the tip is not beveled as shown in the figure. Portions of paperboard 11 may also be laminated with other materials.
図ロは板紙１１の先端が斜めに切削加工されて
いる。一般に米坪300ｇ／m2以上の場合、間隙５
（第３図）を小さくするために上記のスカイブ処
理がなされる。スカイブの形状は斜め加工に限ら
ない。図の場合、耐水・ガスバリア層１２がアル
ミ箔１６とその下層の熱可塑性樹脂層１７とから
なり、板紙１１の下側に接着剤層１９で貼合さ
れ、次いで板紙の上面及び耐水・ガスバリア層１
２の突出部分とが同時に熱可塑性樹脂層１５でラ
ミネートされ、しかる後、突出縁１３が形成され
ている。 In Figure 2, the tip of the paperboard 11 is cut obliquely. Generally, if the area is 300g/m2 or more , the gap is 5
(FIG. 3), the skiving process described above is performed. The shape of the skive is not limited to diagonal processing. In the case of the figure, the water-resistant/gas barrier layer 12 is composed of an aluminum foil 16 and a thermoplastic resin layer 17 below it, and is laminated to the lower side of the paperboard 11 with an adhesive layer 19, and then the upper surface of the paperboard and the water-resistant/gas barrier layer 1
The two protruding parts are simultaneously laminated with a thermoplastic resin layer 15, and then the protruding edges 13 are formed.
図ハは突出縁１３の一部が板紙１１の端縁にか
ぶさつている例を示す。 Figure C shows an example in which a part of the protruding edge 13 covers the edge of the paperboard 11.
本発明の胴部用ブランクシートは第１図に示す
筒状の容器だけにとどまらず、円錐、角錐台の容
器、さらにコンポジツト缶にも適用出来る。 The body blank sheet of the present invention can be applied not only to the cylindrical container shown in FIG. 1, but also to conical, truncated pyramidal containers, and even composite cans.
第５図は本発明の適用例の別の一例を示す。図
イで胴部１はブランクシートが丸められ、その両
端が重ね合わされて貼合されているが、上、下縁
は突き合わせとし、蓋板、底板との嵌合を良くし
たものである。図ロはｂ−ｂ矢視の部分断面図で
ある。突き合わせ部分の耐水・ガスバリア性が突
出縁１３でカバーされている。図ハはｃ−ｃ矢視
の部分断面図である。 FIG. 5 shows another example of application of the present invention. In Figure A, the body part 1 is made of rolled blank sheets, and their ends are overlapped and pasted together, but the upper and lower edges are butted to improve the fit with the lid plate and the bottom plate. Figure b is a partial sectional view taken along the line bb. The water resistance and gas barrier properties of the abutting portion are covered by the protruding edge 13. Figure C is a partial sectional view taken along line c-c.
（発明の効果） 本発明の効果を以下列挙する。(Effect of the invention) The effects of the present invention are listed below.
(1) 本発明の胴部ブランクシートを加工し容器を
作つた時、胴部重合部と蓋板、又は底板との間
に出来る間隙５が極めて小さくなり、その部分
に起因する液漏れは皆無となる。(1) When the body blank sheet of the present invention is processed to make a container, the gap 5 created between the body overlapped part and the lid plate or bottom plate becomes extremely small, and there is no leakage caused by that part. becomes.
(2) 上記の間隙５が形状的にみても小さいため、
種々の加工上のメリツトが得られる。(2) Since the above-mentioned gap 5 is small in terms of shape,
Various processing advantages can be obtained.
(イ) 各部材の表面の熱可塑性樹脂のライニング
層の厚さを小さく出来る。 (a) The thickness of the thermoplastic resin lining layer on the surface of each member can be reduced.
(ロ) 樹脂をとかして間隙５を埋め込む必要がな
いため、貼合に最低必要な温度で加熱すれば
よい。 (b) Since it is not necessary to melt the resin to fill in the gap 5, it is sufficient to heat it at the minimum temperature required for lamination.
(ハ)同様に加圧も少くて済む。 (c) Similarly, less pressure is required.
(ニ) 樹脂の溶融が少なければ、冷却も早くなる
ので、容器加工の生産性がアツプする。 (d) If the resin melts less, it will cool faster, increasing productivity in container processing.
第１図は本発明の対象の紙製液体容器の一例の
正面断面図、第２図は第１図のａ−ａ断面矢視の
部分平面断面図、第３図は本発明の胴部用ブラン
クシートの一実施例で、第１図のａ−ａ矢視の部
分平面断面図、そして第４図は本発明の胴部ブラ
ンクシートの他の実施例の突出縁を有する端縁の
部分拡大断面図、第５図は本発明の一実施例の胴
部斜視図とその部分断面図である。
１……胴部、２……蓋板、３……底板、４……
重合部、５……間隙、１１……板紙、１２……耐
水・ガスバリア性薄膜層、１３……突出縁、１
５，１７，８……熱可塑性樹脂ラミネート層、１
６……アルミ箔、１９……接着剤層。
FIG. 1 is a front sectional view of an example of a paper liquid container to which the present invention is applied, FIG. 2 is a partial plane sectional view taken along the line a-a in FIG. One embodiment of the blank sheet is a partial plan cross-sectional view taken along the a-a arrow in FIG. FIG. 5 is a perspective view of the trunk of an embodiment of the present invention and a partial sectional view thereof. 1...Body part, 2...Lid plate, 3...Bottom plate, 4...
Polymerized portion, 5...Gap, 11...Paperboard, 12...Water-resistant/gas barrier thin film layer, 13...Protruding edge, 1
5, 17, 8...Thermoplastic resin laminate layer, 1
6...Aluminum foil, 19...Adhesive layer.
Claims (1)
性樹脂ライニングした耐水・ガスバリア性薄膜層
とからなる液体容器胴部用ブランクシートにおい
て、該ブランクシートの胴部重合部に対応する一
端縁にあつて上記耐水・ガスバリア性薄膜層が若
干突出し、該突出縁が表側に折り返えされて、耐
水・ガスバリア性薄膜層同士の折り重ね部を形成
していることを特徴とする液体容器胴部用ブラン
クシート。1. In a blank sheet for the body of a liquid container consisting of at least a paperboard and a water-resistant/gas barrier thin film layer with thermoplastic resin lining on the aluminum foil on the back side, at one edge of the blank sheet corresponding to the overlapping part of the body. A liquid container body blank characterized in that the water-resistant/gas-barrier thin film layer protrudes slightly, and the protruding edge is folded back to the front side to form a folded portion between the water-resistant/gas-barrier thin film layers. sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14661983A JPS6045136A (en) | 1983-08-12 | 1983-08-12 | Blank sheet for drum section of liquid vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14661983A JPS6045136A (en) | 1983-08-12 | 1983-08-12 | Blank sheet for drum section of liquid vessel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6045136A JPS6045136A (en) | 1985-03-11 |
| JPH0333579B2 true JPH0333579B2 (en) | 1991-05-17 |
Family
ID=15411827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14661983A Granted JPS6045136A (en) | 1983-08-12 | 1983-08-12 | Blank sheet for drum section of liquid vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6045136A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4567122B2 (en) * | 1999-02-25 | 2010-10-20 | 凸版印刷株式会社 | Sealed container |
| JP4567121B2 (en) * | 1999-08-23 | 2010-10-20 | 凸版印刷株式会社 | Packaging container |
| JP2009073553A (en) * | 2007-09-25 | 2009-04-09 | Toppan Printing Co Ltd | Paper container |
| JP6136125B2 (en) * | 2012-06-21 | 2017-05-31 | 凸版印刷株式会社 | Cup type paper container |
| JP2014141282A (en) * | 2013-01-25 | 2014-08-07 | Nippon Dekishii:Kk | Paper container and skive heming processing method |
| JP6554812B2 (en) * | 2015-02-17 | 2019-08-07 | 大日本印刷株式会社 | Method for fixing a lid to a paper cup, method for producing a sealed paper container, and sealed paper container |
| JP2020156938A (en) * | 2019-03-27 | 2020-10-01 | 日本製紙株式会社 | Paper-made drinking straw |
| JP7437944B2 (en) * | 2020-01-09 | 2024-02-26 | 株式会社レゾナック・パッケージング | cup-shaped container |
-
1983
- 1983-08-12 JP JP14661983A patent/JPS6045136A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6045136A (en) | 1985-03-11 |
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