JP3049303B2 - Sleeve molding method and sleeve molded product - Google Patents
Sleeve molding method and sleeve molded productInfo
- Publication number
- JP3049303B2 JP3049303B2 JP2289825A JP28982590A JP3049303B2 JP 3049303 B2 JP3049303 B2 JP 3049303B2 JP 2289825 A JP2289825 A JP 2289825A JP 28982590 A JP28982590 A JP 28982590A JP 3049303 B2 JP3049303 B2 JP 3049303B2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical base
- resin
- around
- die
- sleeve
- 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 - Fee Related
Links
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はスリーブ成形法に係り、特に、筒状のベース
周囲に樹脂による縞模様を形成する方法に関する。Description: TECHNICAL FIELD The present invention relates to a sleeve molding method, and more particularly to a method for forming a striped pattern of a resin around a cylindrical base.
従来より、例えばチューブ容器では、アルミラミネー
トを施した筒状体に合成樹脂を積層した積層チューブが
知られている。2. Description of the Related Art Conventionally, as a tube container, for example, a laminated tube in which a synthetic resin is laminated on an aluminum-laminated cylindrical body is known.
一方、このようなチューブ容器は、例えば、化粧料、
歯磨き材、接着材等の容器として利用できるが、商品と
して販売するために、表面に模様を付けたりすることが
ある。On the other hand, such tube containers are, for example, cosmetics,
It can be used as a container for toothpastes, adhesives, etc., but may be patterned on the surface to be sold as a product.
前記チューブ容器において、表面の模様は通常印刷で
行われているが、このような模様付与の印刷を施すとそ
の印刷工程が必要となり、コスト高となる。In the tube container, the pattern on the surface is usually printed by printing. However, when printing with such a pattern is applied, the printing process is required, and the cost increases.
本発明はこのような観点でなされたもので、表面に印
刷を施すことなく製造工程で表面に模様を形成できるス
リーブ成形法、並びに、その成形法により成形したチュ
ーブ容器を提供することを課題とする。The present invention has been made in view of the above, and an object of the present invention is to provide a sleeve forming method capable of forming a pattern on a surface in a manufacturing process without performing printing on the surface, and a tube container formed by the forming method. I do.
本発明は、貫通孔を有するとともにこの貫通孔の周囲
に環状の樹脂押出口を有するダイを用い、前記貫通孔か
ら筒状ベースを送出しつつ、この筒状ベースの周囲に前
記樹脂押出口から溶融樹脂を押し出し、筒状ベースの周
囲に溶融樹脂を積層し、その際、貫通孔から送出される
筒状ベースに樹脂押出口から押し出される溶融樹脂が接
触する部分の圧力を周期的に減圧することで、筒状ベー
スの周囲に積層される溶融樹脂の厚さを周期的に可変と
するチューブ容器成形用のスリーブ成形法である。The present invention uses a die having a through-hole and an annular resin extrusion port around the through-hole, and while sending out the cylindrical base from the through-hole, from the resin extrusion port around the cylindrical base. The molten resin is extruded, and the molten resin is laminated around the cylindrical base. At this time, the pressure at a portion where the molten resin extruded from the resin extrusion port comes into contact with the cylindrical base delivered from the through hole is periodically reduced. This is a sleeve forming method for forming a tube container in which the thickness of the molten resin laminated around the cylindrical base is periodically varied.
ここで、前記ダイを２以上設け、筒状ベースの周囲に
樹脂層を２層以上設けることもできる。Here, two or more dies may be provided, and two or more resin layers may be provided around the cylindrical base.
そして、第１のダイと第２のダイとを設け、第１のダ
イによる成形時における減圧周期と、第２のダイにおけ
る成形時の減圧周期とを異相とすると、樹脂層の肉厚部
と肉薄部とが交互に重なるので全体として均一な厚さの
樹脂層とすることができる。When the first die and the second die are provided, and the decompression cycle at the time of molding by the first die and the decompression cycle at the time of molding by the second die are out of phase, the thick part of the resin layer and Since the thin portions alternate with each other, a resin layer having a uniform thickness can be obtained as a whole.
そして、以上の成形法により、以下のような成形品を
成形できる。And the following molded articles can be molded by the above molding method.
筒状ベースの周囲に樹脂層を積層してなり、前記樹脂
層は、肉厚部と肉薄部との繰り返し構造の有して、筒状
ベースの周囲に前記肉厚部と肉薄部との繰り返しによる
縞模様を構成したことを特徴とするスリーブ成形品。A resin layer is laminated around a cylindrical base, and the resin layer has a repeating structure of a thick portion and a thin portion, and the repeating of the thick portion and the thin portion around the cylindrical base. A sleeve molded product characterized by comprising a striped pattern formed by:
前記樹脂層が２層以上あり、各層の肉厚部と肉薄部と
が交互にずれた位置関係にあることを特徴とするのス
リーブ成形品。A sleeve molded product, characterized in that there are two or more resin layers, and a thick portion and a thin portion of each layer are alternately displaced from each other.
以上のようなスリーブ成形品を筒状本体としてその一
端に口頚部を設け、他端を閉塞してチューブ容器とする
こともできる。The above-mentioned sleeve molded product may be used as a tube body by providing a tubular main body with a mouth and neck at one end and closing the other end.
本発明では、前記ダイの貫通孔から筒状ベースを送出
しつつ、この筒状ベースの周囲に前記樹脂押出口から溶
融樹脂を押し出し、筒状ベースの周囲に溶融樹脂を積層
する際、貫通孔から送出される筒状ベースに樹脂押出口
から押し出される溶融樹脂が接触する部分の圧力を周期
的に減圧することで、筒状ベースの周囲に積層される溶
融樹脂の厚さが周期的に可変とされる。In the present invention, while feeding the cylindrical base from the through hole of the die, the molten resin is extruded from the resin extrusion port around the cylindrical base, and when the molten resin is laminated around the cylindrical base, the through hole is formed. The thickness of the molten resin laminated around the cylindrical base is periodically variable by periodically reducing the pressure at the portion where the molten resin extruded from the resin extrusion port comes into contact with the cylindrical base delivered from the It is said.
よって、樹脂層は、肉厚部と肉薄部との繰り返し構造
となり、筒状ベースの周囲に前記肉厚部と肉薄部とから
なる縞模様が形成される。Therefore, the resin layer has a repeating structure of a thick portion and a thin portion, and a striped pattern including the thick portion and the thin portion is formed around the cylindrical base.
本発明を押出成形などによる筒状成形品に適用される
と、滑り止めを筒状成形品の表面に形成できる。すなわ
ち、肉厚部と肉薄部との繰り返し構造により段差が表面
にでき、これが滑り止めとして作用する。When the present invention is applied to a cylindrical molded product by extrusion or the like, a non-slip can be formed on the surface of the cylindrical molded product. That is, a step is formed on the surface by the repetitive structure of the thick part and the thin part, and this acts as a slip stopper.
以下、本発明の実施例を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
〈実施例１〉 まず、成形用ダイ（Ｄ）を説明する。第１図のよう
に、このダイ（Ｄ）は、筒状ベース１の周囲を保持して
これを案内・送出するガイド孔２を有する第１スリーブ
５と、この第１のスリーブ５に続いて、内部に筒状ベー
ス１を通して送出する貫通孔３を有する第２スリーブ６
が設けられた。Example 1 First, a molding die (D) will be described. As shown in FIG. 1, the die (D) is provided with a first sleeve 5 having a guide hole 2 for holding the periphery of the cylindrical base 1 and guiding / sending the same, , A second sleeve 6 having a through-hole 3 for feeding through the cylindrical base 1 therein
Was provided.
そして、第２スリーブ６の周囲をダイ本体７で囲ん
で、ダイ本体７と第２スリーブ６との間に、樹脂押出路
８が形成され、この樹脂押出路８がダイ（Ｄ）の先端で
開放されて、前記貫通孔３の周囲に環状の樹脂押出口９
を形成している。Then, the periphery of the second sleeve 6 is surrounded by the die body 7, and a resin extrusion path 8 is formed between the die body 7 and the second sleeve 6, and the resin extrusion path 8 is formed at the tip of the die (D). After being opened, an annular resin extrusion port 9 is formed around the through hole 3.
Is formed.
そして、第１スリーブ５のガイド孔２の内径は筒状ベ
ース１の外形とほぼ同一で、筒状ベース１を保持・案内
できるようになっている。一方、第２のスリーブ６の貫
通孔３の内径は、中を通過する筒状ベース１の外径より
大きく形成され、筒状ベース１の周囲に減圧路11を形成
するようになっている。この減圧路11は第１スリーブ５
と第２スリーブ６との間からダイ（Ｄ）の外部に設けた
真空ポンプ（Ｐ）に接続されている。The inner diameter of the guide hole 2 of the first sleeve 5 is substantially the same as the outer shape of the cylindrical base 1 so that the cylindrical base 1 can be held and guided. On the other hand, the inner diameter of the through hole 3 of the second sleeve 6 is formed to be larger than the outer diameter of the cylindrical base 1 passing therethrough, so that a decompression path 11 is formed around the cylindrical base 1. The decompression path 11 is the first sleeve 5
The vacuum pump (P) provided outside the die (D) is connected from between the first sleeve 6 and the second sleeve 6.
以上の装置を用いて本発明の方法を実施する。 The method of the present invention is performed using the above apparatus.
まず、第１スリーブ５のガイド孔２と、第２スリーブ
６の貫通孔３に筒状ベース１を通し、これを送出する。
筒状ベース１としては、チューブ容器に使用するアルミ
ラミネート積層チューブ、押し出し成形による樹脂製管
体など各種管形状のものを使用できる。First, the cylindrical base 1 is passed through the guide hole 2 of the first sleeve 5 and the through hole 3 of the second sleeve 6, and is sent out.
As the tubular base 1, various tubular shapes such as an aluminum laminated laminated tube used for a tube container and a resin tubular body formed by extrusion molding can be used.
この筒状ベース１を一定速度で送りながら、環状の樹
脂押出口９から樹脂を押し出すと、貫通孔３から出てく
る筒状ベース１の周囲に溶融樹脂が積層されて固化し、
樹脂層20を有する積層管状体が成形される。When the resin is extruded from the annular resin extrusion port 9 while feeding the cylindrical base 1 at a constant speed, the molten resin is laminated and solidified around the cylindrical base 1 coming out of the through hole 3, and solidified.
A laminated tubular body having the resin layer 20 is formed.
ここで、真空ポンプ（Ｐ）を周期的にオン・オフする
と、あるいは、減圧経路途中の制御弁（図示せず）を周
期的にオン・オフすると、貫通孔３から送出される筒状
ベース１に樹脂押出口９から押し出される溶融樹脂が接
触する部分の圧力、すなわち、減圧路11から溶融樹脂の
背後を周期的に減圧するので、溶融樹脂の積層厚さが変
化する。これにより、溶融樹脂の背後を減圧したとき、
第３図のように、樹脂の積層厚さが薄くなり、減圧を停
止したとき樹脂の厚さが、本来の積層厚さとなる。Here, when the vacuum pump (P) is periodically turned on and off, or when a control valve (not shown) in the middle of the pressure reducing path is periodically turned on and off, the cylindrical base 1 sent out from the through-hole 3. Since the pressure at the portion where the molten resin extruded from the resin extrusion port 9 comes into contact therewith, that is, the pressure behind the molten resin is periodically reduced from the pressure reducing path 11, the lamination thickness of the molten resin changes. With this, when the pressure behind the molten resin is reduced,
As shown in FIG. 3, the lamination thickness of the resin is reduced, and when the decompression is stopped, the thickness of the resin becomes the original lamination thickness.
よって、樹脂の肉厚部t1と肉薄部t2との繰り返し構造
が筒状ベース１の表面に形成されるので、これが縞模様
を構成する。この縞模様は、着色した樹脂を使用したと
き、肉薄部t2の色が薄く、肉厚部t1の色が濃くなり、は
っきりした模様となる。Therefore, a repeating structure of the thick portion t1 and the thin portion t2 of the resin is formed on the surface of the tubular base 1, and this forms a stripe pattern. When a colored resin is used, the striped pattern has a thin color at the thin portion t2 and a dark color at the thick portion t1, resulting in a clear pattern.
さらに、樹脂の肉厚部t1と肉薄部t2との繰り返し構造
により段差が筒状ベース１の表面に形成されるので、こ
の段差が滑り止めとなる。Further, since a step is formed on the surface of the cylindrical base 1 by the repetitive structure of the thick portion t1 and the thin portion t2 of the resin, the step becomes non-slip.
第５図は、以上のように成形した成形品を筒状本体と
し、この筒状本体30の一端に口頚部31を設け、他端を閉
塞してチューブ容器とした例である。FIG. 5 shows an example in which the molded article formed as described above is used as a tubular body, and a mouth and neck portion 31 is provided at one end of the tubular body 30 and the other end is closed to form a tube container.
〈実施例２〉 次ぎに、第２図に示したように、第１実施例の装置を
２台直列に配置して、筒状ベース１の周囲に樹脂層20a,
20bを２層積層した。<Embodiment 2> Next, as shown in FIG. 2, two devices of the first embodiment are arranged in series, and a resin layer 20a,
20b were laminated in two layers.
すなわち、第１貫通孔3aを有するとともにこの第１貫
通孔3aの周囲に環状の第１樹脂押出口9aを有する第１ダ
イ（D1）と、第２貫通孔3bを有するとともにこの第２貫
通孔3bの周囲に環状の第２樹脂押出口9bを有する第２ダ
イ（D2）とを用いる。そして前記第１貫通孔3aから筒状
ベース１を送出しつつ、この筒状ベース１の周囲に前記
第１樹脂押出口9aから第１溶融樹脂を押し出し、筒状ベ
ース１の周囲に第１溶融樹脂を積層し、その際、第１貫
通孔3aから送出される筒状ベース１に第１樹脂押出口9a
から押し出される第１溶融樹脂が接触する部分の圧力を
前記真空ポンプ（Ｐ）のオン・オフで周期的に減圧する
ことで、筒状ベース１の周囲に積層される第１溶融樹脂
の厚さを周期的に可変とする。このようにすることで、
積層筒状ベース１が成形されるので、この積層筒状ベー
スを第２ダイ（D2）の第２貫通孔3bに通して移送する。That is, a first die (D1) having a first through hole 3a and having an annular first resin extrusion port 9a around the first through hole 3a, a second die having a second through hole 3b and a second die having the second through hole 3b. A second die (D2) having an annular second resin extrusion port 9b around 3b is used. Then, the first molten resin is extruded from the first resin extrusion port 9a around the cylindrical base 1 while the cylindrical base 1 is being sent out from the first through hole 3a, and the first molten resin is spread around the cylindrical base 1. The resin is laminated, and at this time, the first resin extrusion port 9a is formed on the cylindrical base 1 delivered from the first through hole 3a.
The thickness of the first molten resin layered around the cylindrical base 1 is reduced by periodically reducing the pressure of the portion contacted by the first molten resin extruded by turning on and off the vacuum pump (P). Is periodically variable. By doing this,
Since the laminated cylindrical base 1 is formed, the laminated cylindrical base is transferred through the second through hole 3b of the second die (D2).
そして、前記第２貫通孔3bから筒状ベース１を送出し
つつ、この筒状ベース１の周囲に前記第２樹脂押出口9b
から第２溶融樹脂を押し出し、筒状ベース１の周囲に第
２溶融樹脂を積層し、その際、第２貫通孔3bから送出さ
れる積層筒状ベース１に第２樹脂押出口9bから押し出さ
れる第２溶融樹脂が接触する部分の圧力を周期的に減圧
することで、積層筒状ベース１の周囲に積層される第２
溶融樹脂の厚さを周期的に可変とする。このようにする
ことで、２層の縞状樹脂層を筒状ベース１の周囲に有す
るスリーブ成形品が成形される。Then, while the cylindrical base 1 is being sent out from the second through hole 3b, the second resin extrusion port 9b is formed around the cylindrical base 1.
, And the second molten resin is laminated around the cylindrical base 1. At this time, the second molten resin is extruded from the second resin extrusion port 9 b to the laminated cylindrical base 1 sent out from the second through hole 3 b. By periodically reducing the pressure of the portion where the second molten resin comes into contact, the second layer laminated around the laminated cylindrical base 1 is formed.
The thickness of the molten resin is made variable periodically. In this manner, a sleeve molded product having two striped resin layers around the cylindrical base 1 is formed.
この実施例では、第１ダイ（D1）による成形時の減圧
周期の位相と第２ダイ（D2）による成形時の減圧周期の
位相を逆にすることで、第４図のように、一層目の肉厚
部t1と二層目の肉薄部t2とが重なって、全体の層の厚さ
が平均化され、二層目の層の表面が平滑となる。そし
て、一層目の樹脂が着色され、２層目の樹脂が無色で構
成されている。このため、外観から一層目の縞模様が見
え、触った時の感触は平滑である。In this embodiment, the phase of the depressurization cycle at the time of molding by the first die (D1) and the phase of the depressurization cycle at the time of molding by the second die (D2) are reversed, as shown in FIG. The thick portion t1 and the thin portion t2 of the second layer overlap, the thickness of the entire layer is averaged, and the surface of the second layer becomes smooth. The first-layer resin is colored and the second-layer resin is colorless. For this reason, the first stripe pattern can be seen from the appearance, and the touch when touched is smooth.
本発明によれば、製造過程で筒状ベースの周囲に樹脂
層による縞模様を形成できる。ADVANTAGE OF THE INVENTION According to this invention, the striped pattern by a resin layer can be formed around a cylindrical base in a manufacturing process.
第１図は実施例１に用いた製造装置を示した断面図、第
２図は実施例２に用いた製造装置の断面図、第３図は実
施例１による成形品の断面図、第４図は実施例２による
成形品の断面図、第５図は本発明による成形品を用いた
チューブ容器の斜視図である。 １…筒状ベース、２…ガイド孔、３…貫通孔、3a…第１
貫通孔、3b…第２貫通孔、５…第１スリーブ、６…第２
スリーブ、７…ダイ本体、８…樹脂押出路、９…樹脂押
出口、9a…第１樹脂押出口、9b…第２樹脂押出口、11…
減圧路、20…樹脂層、20a…樹脂層、30…筒状本体、31
…口頚部。FIG. 1 is a cross-sectional view showing the manufacturing apparatus used in the first embodiment, FIG. 2 is a cross-sectional view of the manufacturing apparatus used in the second embodiment, FIG. FIG. 5 is a sectional view of a molded article according to the second embodiment, and FIG. 5 is a perspective view of a tube container using the molded article according to the present invention. DESCRIPTION OF SYMBOLS 1 ... Cylindrical base, 2 ... Guide hole, 3 ... Through hole, 3a ... 1st
Through hole, 3b: second through hole, 5: first sleeve, 6: second
Sleeve, 7: die body, 8: resin extrusion path, 9: resin extrusion port, 9a: first resin extrusion port, 9b: second resin extrusion port, 11 ...
Decompression path, 20: resin layer, 20a: resin layer, 30: tubular body, 31
... the mouth and neck.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭56−78933（ＪＰ，Ａ) 特開 昭57−212045（ＪＰ，Ａ) 特開 昭58−82738（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 47/00 - 47/96 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-78933 (JP, A) JP-A-57-212045 (JP, A) JP-A-58-82738 (JP, A) (58) Field (Int. Cl. 7 , DB name) B29C 47/00-47/96
Claims (4)
に環状の樹脂押出口を有するダイを用い、前記貫通孔か
ら筒状ベースを送出しつつ、この筒状ベースの周囲に前
記樹脂押出口から溶融樹脂を押し出し、筒状ベースの周
囲に溶融樹脂を積層し、その際、貫通孔から送出される
筒状ベースに樹脂押出口から押し出される溶融樹脂が接
触する部分の圧力を周期的に減圧することで、筒状ベー
スの周囲に積層される溶融樹脂の厚さを周期的に可変と
するチューブ容器成形用のスリーブ成形法。1. A die having a through-hole and an annular resin extrusion opening around the through-hole. While feeding the cylindrical base through the through-hole, the resin extrusion opening is formed around the cylindrical base. The molten resin is extruded from the cylindrical base, and the molten resin is laminated around the cylindrical base. At this time, the pressure of the portion where the molten resin extruded from the resin extrusion port comes into contact with the cylindrical base delivered from the through hole is periodically reduced. A sleeve forming method for forming a tube container in which the thickness of the molten resin laminated around the cylindrical base is periodically varied.
に樹脂層を２層以上設ける請求項１記載のスリーブ成形
法。2. The method according to claim 1, wherein at least two dies are provided, and at least two resin layers are provided around the cylindrical base.
ダイによる成形時における減圧周期と、第２のダイにお
ける成形時の減圧周期とが異相である請求項２記載のス
リーブ成形法。3. The method according to claim 2, wherein a first die and a second die are provided, and a decompression cycle during molding by the first die and a decompression cycle during molding by the second die are out of phase. Sleeve molding method.
してなり、前記各樹脂層は、肉厚部と肉薄部との繰り返
し構造を有すると共に、各層の肉厚部と肉薄部とが交互
にずれた位置関係にあり、筒状ベースの周囲に前記肉厚
部と肉薄部との繰り返しによる縞模様を構成したことを
特徴とするチューブ容器成形用のスリーブ成形品。4. A resin sheet comprising two or more resin layers laminated around a cylindrical base, wherein each of said resin layers has a repeating structure of a thick part and a thin part, and a thick part and a thin part of each layer. Characterized in that they are alternately displaced from each other, and a striped pattern is formed around the cylindrical base by repeating the thick portion and the thin portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2289825A JP3049303B2 (en) | 1990-10-26 | 1990-10-26 | Sleeve molding method and sleeve molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2289825A JP3049303B2 (en) | 1990-10-26 | 1990-10-26 | Sleeve molding method and sleeve molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04163121A JPH04163121A (en) | 1992-06-08 |
| JP3049303B2 true JP3049303B2 (en) | 2000-06-05 |
Family
ID=17748260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2289825A Expired - Fee Related JP3049303B2 (en) | 1990-10-26 | 1990-10-26 | Sleeve molding method and sleeve molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3049303B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4849327B2 (en) * | 2006-09-29 | 2012-01-11 | 株式会社吉野工業所 | Surface decoration method for synthetic resin extrusions |
-
1990
- 1990-10-26 JP JP2289825A patent/JP3049303B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04163121A (en) | 1992-06-08 |
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