JPH0999484A - Mold for styrenic resin foamed container - Google Patents

Mold for styrenic resin foamed container

Info

Publication number
JPH0999484A
JPH0999484A JP25965495A JP25965495A JPH0999484A JP H0999484 A JPH0999484 A JP H0999484A JP 25965495 A JP25965495 A JP 25965495A JP 25965495 A JP25965495 A JP 25965495A JP H0999484 A JPH0999484 A JP H0999484A
Authority
JP
Japan
Prior art keywords
container
mold
resin foam
styrene
molding
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
Application number
JP25965495A
Other languages
Japanese (ja)
Inventor
Yuji Fujiwara
裕士 藤原
Shigeru Kobayashi
茂 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi Chemical Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Priority to JP25965495A priority Critical patent/JPH0999484A/en
Publication of JPH0999484A publication Critical patent/JPH0999484A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To reduce the wt. irregularity of a molded container in the molding of a styrenic resin foamed container. SOLUTION: In a mold for molding a plurality of styrenic resin foamed containers at the same time by holding styrenic resin foamed sheets passing through a heating furnace to hold them between the male and female molds of a male and female fitted alloy mold, at least the friction coefficient to the styrenic resin foam sheet on the fitting surface of a male piece 5B among a plurality of the male pieces 5B constituting the female mold and a plurality of the female pieces 6B constituting the female mold fitted to the male pieces 5B.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、スチレン系樹脂発
泡シートを用いてスチレン系樹脂発泡容器を成形するた
めのスチレン系樹脂発泡容器の成形用金型に関する。
TECHNICAL FIELD The present invention relates to a mold for molding a styrene resin foam container for molding a styrene resin foam container using a styrene resin foam sheet.

【0002】[0002]

【従来の技術】一般に、スチレン系樹脂発泡容器は図1
に示す成形装置によって成形される。この装置に設けら
れる雄雌嵌合金型4が、スチレン系樹脂発泡シート2の
移動経路を挟んだ上下箇所にそれぞれ上下移動自在に設
けた雄金型5と、雌金型6とから構成され、加熱炉3を
通過したスチレン系樹脂発泡シート2が下方に位置する
雄金型5上に移動したとき、雌金型6及び雄金型5が互
いに接近する側に移動することにより該雌金型6と雄金
型5とが嵌合し、スチレン系樹脂発泡容器1を成形する
のであるが、スチレン系樹脂発泡シート2に対して接近
移動している雌金型6及び雄金型5のうちのいずれか一
方の金型、図では雄金型5の上面に接当した後、雌金型
6の底面が接当した地点からさらに雌金型6が接近移動
して金型5,6の嵌合が完了するまでの間中、雄金型5
の嵌合面のうち、図4(ロ)に示すように成形される成
形容器1の底部に対応する部位のスチレン系樹脂発泡シ
ート2に引っ張り力Fが作用するため、図8(ロ)に示
すように、成形後の成形容器1の底部の肉厚Nが成形容
器1の側壁部分の肉厚nよりも薄くなり、成形容器1の
底部が強度的に弱くなる不都合が発生していた。また、
成形容器の側壁部分の外表面にデザインや文字等を印刷
したい場合に、成形容器の側壁部分がその印刷に耐え得
るように側壁部分の肉厚を厚くしたいこともあった。
2. Description of the Related Art Generally, a styrene resin foam container is shown in FIG.
The molding is performed by a molding apparatus shown in FIG. A male / female fitting die 4 provided in this apparatus is composed of a male die 5 and a female die 6 which are vertically movable at upper and lower portions sandwiching a movement path of the styrene resin foam sheet 2, respectively. When the styrene-based resin foam sheet 2 that has passed through the heating furnace 3 moves onto the male mold 5 located below, the female mold 6 and the male mold 5 move toward the side closer to each other. 6 and the male mold 5 are fitted to each other to mold the styrene resin foam container 1, but among the female mold 6 and the male mold 5 that are moving closer to the styrene resin foam sheet 2. After contacting the upper surface of one of the molds, that is, the male mold 5 in the figure, the female mold 6 moves further from the point where the bottom surface of the female mold 6 contacts, and Male mold 5 until fitting is completed
8B because the tensile force F acts on the styrene-based resin foam sheet 2 in the portion corresponding to the bottom of the molded container 1 molded as shown in FIG. As shown, the wall thickness N of the bottom of the molded container 1 after molding becomes smaller than the wall thickness n of the side wall of the molded container 1, and the bottom of the molded container 1 becomes weaker in strength. Also,
When it is desired to print a design, characters, etc. on the outer surface of the side wall portion of the molding container, it is sometimes desired to increase the thickness of the side wall portion so that the side wall portion of the molding container can withstand the printing.

【0003】上記のように、成形される成形容器1の肉
厚を部分的に厚くすることが要望され、これに応えるも
のとして、例えば特公昭59−19009号公報に示さ
れるものがある。これは、雄金型を嵌合方向に伸縮自在
で且つスプリングにて伸長側へ付勢した状態で設けた複
数の金型から構成して、スチレン系樹脂発泡シートへの
押圧が段階的に徐々に行われることによって、成形後の
成形容器の底部の肉厚が成形容器の側壁部分の肉厚より
も薄くなることを回避したり、側壁部分の肉厚を厚くで
きるようにしている。
As described above, it is desired to partially increase the thickness of the molded container 1 to be molded, and as a response to this, there is, for example, the one disclosed in Japanese Patent Publication No. 59-19090. This is composed of a plurality of molds provided with a male mold that can expand and contract in the fitting direction and is urged toward the extension side by a spring, and the styrene resin foam sheet is gradually pressed against the mold. By doing so, it is possible to prevent the wall thickness of the bottom portion of the molded container after molding from becoming thinner than the wall thickness of the side wall portion of the molding container, or to increase the wall thickness of the side wall portion.

【0004】しかし、上記雄金型の構成では、金型制作
に要する部品点数の増大や金型の内部構造の複雑化等に
起因して金型制作コストの増大を招くものであった。し
かも、雄金型が嵌合方向で複数の金型に分かれているも
のの、例えば成形される成形容器の側壁部分の一部分の
肉厚を厚くしたい等の成形容器の特定部分の肉厚を変更
することができないものであった。
However, in the above-mentioned male die structure, the die production cost is increased due to an increase in the number of parts required for die production and a complicated internal structure of the die. Moreover, although the male die is divided into a plurality of dies in the fitting direction, the wall thickness of a specific portion of the molding container is changed, for example, to increase the wall thickness of a part of the side wall portion of the molding container to be molded. It was impossible.

【0005】[0005]

【発明が解決しようとする課題】本発明が前述の状況に
鑑み、解決しようとするところは、コスト高になること
を抑制しながらも、成形される成形容器の肉厚を部分的
に変更できるようにする点にある。
SUMMARY OF THE INVENTION In view of the above situation, the present invention is to solve the problem that the wall thickness of the molded container to be molded can be partially changed while suppressing the cost increase. There is a point in doing so.

【0006】[0006]

【課題を解決するための手段】本発明は、前述の課題解
決のために、加熱炉を通過したスチレン系樹脂発泡シー
トを雄雌嵌合金型の雄金型と雌金型との間に挟持し、同
時に複数のスチレン系樹脂発泡容器を成形するためのス
チレン系樹脂発泡容器の成形用金型において、前記雄金
型を構成する複数の雄型駒及びこれら雄型駒に嵌合する
前記雌金型を構成する複数の雌型駒のうち、少なくとも
雄型駒の嵌合面の前記スチレン系樹脂発泡シートに対す
る摩擦係数を部分的に異ならせて、スチレン系樹脂発泡
容器成形用金型を構成するのである。従って、摩擦係数
の値を異ならせることによって、金型に対するスチレン
系樹脂発泡シートの滑り具合を調整することができるの
である。
In order to solve the above problems, the present invention sandwiches a styrene resin foam sheet that has passed through a heating furnace between male and female molds of male and female fitting molds. Then, in a mold for molding a styrene resin foam container for molding a plurality of styrene resin foam containers at the same time, a plurality of male mold pieces constituting the male mold and the female fitting to these male mold pieces are formed. Since the friction coefficient of at least the fitting surface of the male mold piece among the plurality of female mold pieces constituting the mold with respect to the styrene resin foam sheet is partially different, the styrene resin foam container molding mold is constituted. is there. Therefore, the sliding condition of the styrene resin foam sheet with respect to the mold can be adjusted by changing the value of the friction coefficient.

【0007】スチレン系樹脂発泡容器の成形用金型にお
ける雄型駒の嵌合面のうち、成形される成形容器の底部
に対応する部位のスチレン系樹脂発泡シートに対する摩
擦係数を、該成形容器の底部に対応する部位を除いた他
の部位のスチレン系樹脂発泡シートに対する摩擦係数よ
りも高くしたから、例えば図8に示すように、成形容器
1の底部の肉厚Nを側壁部分の肉厚nと同じ厚みにでき
る、あるいは図示していないが成形容器1の底部の肉厚
を側壁部分の肉厚よりも厚くすることができる等、成形
される成形容器の底部の肉厚が薄くなることを抑制する
ことができる。
The coefficient of friction of the portion of the fitting surface of the male mold piece in the molding die of the styrene resin foam container corresponding to the bottom portion of the molding container to be molded with respect to the styrene resin foam sheet is determined by the bottom portion of the molding container. Since the friction coefficient with respect to the styrene-based resin foam sheet in the other parts excluding the part corresponding to is set to be higher than the friction coefficient with respect to the styrene resin foam sheet, for example, as shown in FIG. It is possible to prevent the thickness of the bottom portion of the molded container to be molded from becoming thin, for example, the thickness of the bottom portion of the molding container 1 can be made thicker than the thickness of the side wall portion, although not shown. can do.

【0008】スチレン系樹脂発泡容器の成形用金型にお
ける雄型駒の嵌合面のうち、前記成形容器の底部に対応
する部位のスチレン系樹脂発泡シートに対する摩擦係数
と該成形容器の底部に対応する部位を除いた他の部位の
スチレン系樹脂発泡シートに対する摩擦係数との比を
1:0.1〜1:0.8の範囲にすることが好ましい。
The friction coefficient with respect to the styrene resin foam sheet of the portion of the fitting surface of the male mold piece in the molding die of the styrene resin foam container corresponding to the bottom portion of the molding container and the bottom portion of the molding container. It is preferable that the ratio of the friction coefficient to the styrenic resin foam sheet of the other parts excluding the parts is in the range of 1: 0.1 to 1: 0.8.

【0009】スチレン系樹脂発泡容器の成形用金型によ
って得られる成形容器の絞り比(容器高さ/容器口径)
が0.8以上である場合に特に良好な結果が得られる。
Squeeze ratio (container height / container diameter) of a molded container obtained by a mold for molding a styrene resin foam container
Particularly good results are obtained when is 0.8 or more.

【0010】[0010]

【発明の実施の形態】本発明で使用するスチレン系樹脂
発泡シート又は積層スチレン系樹脂発泡シートにおける
スチレン系樹脂とは、ポリスチレン、ゴム変性ポリスチ
レン、スチレン−アクリロニトリル共重合体、スチレン
−ブタジエン−アクリロニトリル共重合体、スチレン−
無水マレイン酸共重合体等のスチレン及びその誘導体の
単独重合体及び共重合体等である。これらの樹脂にスチ
レン−共役ジエンブロック共重合体ゴム及びその水素添
加物等をブレンドしたものも適用される。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The styrene resin in the foamed styrene resin sheet or laminated styrene resin foam sheet used in the present invention means polystyrene, rubber-modified polystyrene, styrene-acrylonitrile copolymer, styrene-butadiene-acrylonitrile copolymer. Polymer, styrene-
Examples thereof include homopolymers and copolymers of styrene and its derivatives such as maleic anhydride copolymers. A blend of these resins with a styrene-conjugated diene block copolymer rubber and a hydrogenated product thereof is also applicable.

【0011】そして、スチレン系樹脂発泡シートとは、
前述のスチレン系樹脂をブタン、フロン等の発泡剤と押
し出し機で混練後、押し出し発泡させた発泡シートであ
る。また、積層スチレン系樹脂発泡シートは、前記スチ
レン系樹脂発泡シートに、上記スチレン系樹脂、ポリプ
ロピレン、ポリエチレン等のオレフィン系樹脂、ポリ塩
化ビニリデン樹脂等の非発泡の熱可塑性樹脂フィルムを
片面あるいは両面に積層した積層シートであり、スチレ
ン系樹脂発泡シートと同様に使用できる。ここで、スチ
レン系樹脂発泡シートに熱可塑性樹脂フィルムを貼り合
わせ積層・複合する方法としては、スチレン系樹脂発泡
シート上へフィルム樹脂を垂れ流し積層する方法、熱に
て樹脂フィルムを直接積層する方法及び接着剤を介して
樹脂フィルムを積層する方法等がある。尚、スチレン系
樹脂発泡シートと積層スチレン系樹脂発泡シートとを特
に区別する必要がない場合には、共に原反シートと称す
る。
The styrene resin foam sheet is
It is a foamed sheet obtained by kneading the above-mentioned styrene resin with a foaming agent such as butane or freon by an extruder and then extruding and foaming. Further, the laminated styrene resin foam sheet, the styrene resin foam sheet, the styrene resin, polypropylene, olefin resin such as polyethylene, non-foamed thermoplastic resin film such as polyvinylidene chloride resin on one or both sides. This is a laminated sheet that can be used in the same manner as a styrene resin foam sheet. Here, as a method of laminating and laminating a thermoplastic resin film on a styrene-based resin foam sheet, a method of hanging and laminating a film resin on a styrene-based resin foam sheet, a method of directly laminating a resin film by heat, and There is a method of laminating a resin film via an adhesive or the like. In addition, when it is not necessary to particularly distinguish a styrene-based resin foam sheet and a laminated styrene-based resin foam sheet, both are referred to as a raw sheet.

【0012】このような方法で得られた原反シートから
容器1を製造する方法を図1に基づき簡単に説明する。
先ず、ロール状に巻かれた原反シート2を加熱炉3を通
して加熱、2次発泡させた後、雄雌嵌合金型4の雄金型
5と雌金型6との間に挟持し、同時に1ショットで26
個の容器本体7を成形する。この成形の際に雄雌嵌合金
型4の内部を真空排気手段8で減圧し、金型形状の転写
性を高めている。この容器本体7を成形後、原反シート
2からパンチング刃又はトムソン刃等の抜型を備えた自
動パンチング機9で容器本体7の開口部10の周囲に外
方へ張り出した口元11を残して打ち抜き、個々の容器
1とする。ここで、前記雄金型5は、図5にも示すよう
に、26個の雄型駒5B・・から構成し、前記雌金型6
は、前記26個の雄型駒5B・・に嵌合する26個の雌
型駒6B・・から構成している。前記雄金型5と雌金型
6は、それぞれ上下動自在に設けられるとともに、油圧
シリンダ等の各別に設けた駆動装置Sにより両金型5,
6を嵌合して容器本体7を成形する状態と、容器本体7
成形後両金型5,6を離間する状態とに切替え自在に構
成されている。尚、前記雄型駒5B・・及び雌型駒6B
・・の個数は26個に限定されるものではなく、2個以
上であれば何個でもよい。
A method of manufacturing the container 1 from the raw sheet obtained by the above method will be briefly described with reference to FIG.
First, a raw sheet 2 wound in a roll is heated through a heating furnace 3 to be secondarily foamed, and then sandwiched between a male die 5 and a female die 6 of a male / female fitting die 4 and at the same time. 26 per shot
The individual container body 7 is molded. During this molding, the inside of the male and female fitting mold 4 is depressurized by the vacuum exhaust means 8 to enhance the transferability of the mold shape. After this container body 7 is molded, it is punched from the raw sheet 2 with an automatic punching machine 9 equipped with a punching blade, a Thomson blade, or the like, leaving a mouth 11 protruding outward around the opening 10 of the container body 7. , Individual containers 1. Here, as shown in FIG. 5, the male die 5 is composed of 26 male die pieces 5B ...
Are composed of 26 female mold pieces 6B, ... Fitting to the 26 male mold pieces 5B. The male mold 5 and the female mold 6 are provided so as to be movable up and down, respectively, and both molds 5 and 5 are driven by a separately provided driving device S such as a hydraulic cylinder.
6 is fitted to form the container body 7, and the container body 7
After the molding, the two dies 5 and 6 can be switched to a separated state. The male piece 5B ... And the female piece 6B
The number of ··· is not limited to 26, but may be any number of 2 or more.

【0013】前記雄型駒5Bは、図5に示す千鳥配置の
他、原反シート2の進行方向P視において前列の雄型駒
に対して後列の雄型駒が重なり合う碁盤の目のように配
置してもよく、雄型駒5Bの配置はこれらに限定される
ものではない。
In addition to the zigzag arrangement shown in FIG. 5, the male mold pieces 5B are arranged in a zigzag pattern in which the male mold pieces in the rear row overlap with the male mold pieces in the front row when viewed from the traveling direction P of the original sheet 2. They may be arranged, but the arrangement of the male pieces 5B is not limited to these.

【0014】原反シート2がチェーン電動装置(図示せ
ず)により雄型駒5B上に位置すると、図4(イ)に示
すように、前記駆動装置S,Sを作動させて、雄型駒5
Bと雌型駒6Bとを接近移動させる。そして、原反シー
ト2に上昇してきた雄型駒5Bの上面に接当した後、下
降してきた雌型駒6Bの底面が接当した地点からさらに
雄型駒5Bと雌型駒6Bとを接近移動させて図4(ハ)
に示す金型5,6の嵌合が完了するまでの間中、図4
(ロ)に示すように、雄型駒5Bの嵌合面のうちの成形
される成形容器1の底部に対応する部位の原反シート2
に引っ張り力Fが作用するのである。従って、図8
(ロ)に示すように、成形後の成形容器1の底部の肉厚
Nが成形容器1の側壁部分の肉厚nよりも薄くなるので
ある。そこで、本発明では、前記雄型駒5Bの嵌合面の
前記原反シート2に対する摩擦係数及び前記雌型駒6B
の嵌合面の前記原反シート2に対する摩擦係数を部分的
に異ならせて、成形される成形容器1の肉厚を部分的に
変更調整できるようにしている。
When the original sheet 2 is positioned on the male piece 5B by a chain electric device (not shown), as shown in FIG. 4 (a), the drive devices S and S are operated to drive the male piece. 5
B and the female die 6B are moved closer to each other. Then, after contacting the upper surface of the male mold piece 5B that has risen to the original sheet 2, the male mold piece 5B and the female mold piece 6B are further approached from the point where the bottom surface of the female mold piece 6B that has descended contacts. Move it to Figure 4 (C).
During the period until the fitting of the molds 5 and 6 shown in Fig. 4 is completed,
As shown in (b), the original sheet 2 of the fitting surface of the male mold piece 5B corresponding to the bottom of the molded container 1 to be molded.
The pulling force F acts on. Therefore, FIG.
As shown in (b), the wall thickness N of the bottom of the molded container 1 after molding is smaller than the wall thickness n of the side wall of the molded container 1. Therefore, in the present invention, the friction coefficient of the fitting surface of the male mold piece 5B with respect to the original sheet 2 and the female mold piece 6B.
The coefficient of friction of the mating surface with respect to the original sheet 2 is partially different so that the thickness of the molded container 1 to be molded can be partially changed and adjusted.

【0015】具体的には、図2及び図3に示すように、
雄型駒5Bの嵌合面のうちの成形される成形容器1の底
部に対応する部位の一部5Gと成形される成形容器1の
側壁部分の底部側端部部分とに対応する部位5Hに、サ
ンドブラスト加工を施して、成形容器1の底部に対応す
る部位の原反シート2に対する摩擦係数を、雄型駒5B
の他の部位の摩擦係数よりも0.2程度高くした0.8
程度にし、図4(ロ)に示した金型5,6の嵌合が完了
するまでの間中、雄型駒5Bの上面に対してこの上に接
触位置する原反シート2の下面を滑り難くすることがで
き、該雄型駒5Bの上面に位置する原反シート2が下側
に移動し難くなり、また、雌型駒6Bの嵌合面のうちの
成形される成形容器1の口元、つまり開口縁6Gと成形
される成形容器1の側壁部分の開口縁側端部部分に対応
する部位6Hとを、テフロン加工することによって、原
反シート2に対する摩擦係数を0.2程度にして、それ
ら開口縁6Gと部位6Hに対してこの下に接触位置する
原反シート2の上面を滑り易くすることができ、雌型駒
6Bの下面に位置する原反シート2が水平方向に移動し
易くなり、前記サンドブラスト加工された雄型駒5Bと
前記テフロン加工された雌型駒6Bとで嵌合成形するこ
とによって、成形容器1の底部を厚くすることができる
のである。上記のように構成した金型を用いて絞り比
0.8(容器高さ/容器口径)の成形容器を成形する
と、次のような成形容器各部の肉厚分布が得られた。
Specifically, as shown in FIGS. 2 and 3,
A part 5G of the fitting surface of the male mold piece 5B corresponding to the bottom of the molded container 1 to be molded and a part 5H corresponding to the bottom end of the side wall of the molded container 1 to be molded. , Sandblasting is performed to determine the coefficient of friction of the portion corresponding to the bottom of the molding container 1 with respect to the original sheet 2 by the male mold piece 5B.
0.8 higher than the friction coefficient of other parts
And slide the lower surface of the original sheet 2 which is in contact with the upper surface of the male mold piece 5B until the fitting of the molds 5 and 6 shown in FIG. 4B is completed. This makes it difficult for the original sheet 2 located on the upper surface of the male mold piece 5B to move downward, and the mouth of the molded container 1 to be molded on the fitting surface of the female mold piece 6B. That is, the opening edge 6G and the portion 6H corresponding to the opening edge side end portion of the side wall portion of the molded container 1 to be formed are subjected to Teflon processing so that the friction coefficient with respect to the raw sheet 2 is about 0.2, The upper surface of the original sheet 2 located below the opening edge 6G and the portion 6H can be made slippery easily, and the original sheet 2 located on the lower surface of the female die 6B can be easily moved in the horizontal direction. And the sandblasted male piece 5B and the Teflon coating By fitting molded in the female piece 6B that, it is possible to thicken the bottom of the molded container 1. When a molded container having a drawing ratio of 0.8 (container height / container diameter) was molded using the mold configured as described above, the following wall thickness distribution of each molded container was obtained.

【0016】つまり、原反シート2に対する摩擦係数を
どの部位においても0.4程度にした金型を用いた場合
と比較すると、 摩擦係数が0.4程度の金型 本発明の金型 口元の肉厚K 2.4mm 2.2mm 底部の肉厚N 1.8mm 2.1mm の結果が得られた。従って、成形容器の肉厚をどの部位
においても略均一にすることができたのである。
That is, as compared with the case of using a mold in which the coefficient of friction with respect to the original sheet 2 is set to about 0.4 at any part, the mold of which the friction coefficient is about 0.4 of the mold of the present invention The results were obtained with a wall thickness K of 2.4 mm, 2.2 mm and a bottom wall thickness of N 1.8 mm 2.1 mm. Therefore, the wall thickness of the molding container could be made substantially uniform at any part.

【0017】前記原反シート2に対する摩擦係数を異な
らせるために、金型をサンドブラスト加工やテフロン加
工を施したが、金型にアルミ粉を蒸着したり、金型の嵌
合面に複数種の鏡面加工等を施したり、図6に示すよう
に、原反シート2に対する接触面積を変更するために結
晶蒸着等の微細な突起物Tを金型の雄型駒5Bの表面に
貼り付けたり、図7に示すように、金型の雄型駒5Bの
表面に溝Mを多数切削加工したり、金型の部位毎に異な
るピッチでローレット加工、及びリブ立てを施してもよ
いし、これらを組合わせて原反シート2に対する摩擦係
数を変更してもよく、摩擦係数を異ならせるための具体
構成はこれらに限定されるものではない。
The mold was sandblasted or Teflon processed in order to make the coefficient of friction different from the original sheet 2. However, aluminum powder was vapor-deposited on the mold, or a plurality of types were fitted to the fitting surface of the mold. Mirror finishing or the like, as shown in FIG. 6, in order to change the contact area with the original sheet 2, a fine projection T such as crystal deposition is attached to the surface of the male mold piece 5B of the mold, As shown in FIG. 7, a large number of grooves M may be cut on the surface of the male mold piece 5B of the mold, or knurling and rib standing may be performed at different pitches for each part of the mold. The coefficient of friction with respect to the original sheet 2 may be changed in combination, and the specific configuration for making the coefficient of friction different is not limited to these.

【0018】[0018]

【発明の効果】以上にしてなる本発明のスチレン系樹脂
発泡容器の成形用金型によれば、雄型駒の嵌合面のスチ
レン系樹脂発泡シートに対する摩擦係数を部分的に異な
らせるだけで、成形される成形容器の特定部分のみの肉
厚を所望の肉厚に変更調整することができ、成形される
成形容器の底部を厚くして底部の強度を上げたり、成形
容器の側壁部分の肉厚を厚くして印刷に耐え得る側壁部
分を成形したりすることを、コスト高になることを抑制
しながらも実現することができた。
According to the mold for molding a styrene resin foam container of the present invention as described above, the friction coefficient of the fitting surface of the male mold piece with respect to the styrene resin foam sheet is only partially changed, The wall thickness of only a specific part of the molded container to be molded can be changed and adjusted to a desired thickness, and the bottom part of the molded container to be molded can be thickened to increase the strength of the bottom part or the wall part of the molded container. It has been possible to increase the thickness and form a side wall portion that can withstand printing, while suppressing an increase in cost.

【図面の簡単な説明】[Brief description of drawings]

【図1】容器製造装置の概略図FIG. 1 is a schematic diagram of a container manufacturing apparatus.

【図2】雄型駒の一部切欠き斜視図FIG. 2 is a partially cutaway perspective view of a male piece.

【図3】雄型駒と雌型駒の一部切欠き斜視図FIG. 3 is a partially cutaway perspective view of a male piece and a female piece.

【図4】容器製造工程の一部を示す概略断面図FIG. 4 is a schematic cross-sectional view showing a part of the container manufacturing process.

【図5】雄型駒の概略平面図FIG. 5 is a schematic plan view of a male piece.

【図6】雄型駒の要部を示す斜視図FIG. 6 is a perspective view showing a main part of a male piece.

【図7】雄型駒の要部を示す斜視図FIG. 7 is a perspective view showing a main part of a male mold piece.

【図8】容器の比較例を示す縦断面図FIG. 8 is a vertical sectional view showing a comparative example of a container.

【符号の説明】[Explanation of symbols]

1 容器 2 原反シート(スチレン系
樹脂発泡シート) 3 加熱炉 4 雄雌嵌合金型 5 雄金型 5A 基盤 5B 雄型駒 5G 部位 5H 部位 6 雌金型 6A 基盤 6B 雌型駒 7 容器本体 8 真空排気手段 9 自動パンチング機 10 開口部 11 口元 F 引っ張り力 K 肉厚 M 溝 N 肉厚 n 肉厚 S 駆動装置 T 突起
1 container 2 original sheet (styrene resin foam sheet) 3 heating furnace 4 male / female fitting mold 5 male mold 5A base 5B male mold 5G part 5H part 6 female mold 6A base 6B female mold 7 container body 8 Vacuum evacuation means 9 Automatic punching machine 10 Opening 11 Mouth F Pulling force K Thickness M Groove N Groove thickness n Thickness S Drive device T Projection

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 加熱炉を通過したスチレン系樹脂発泡シ
ートを雄雌嵌合金型の雄金型と雌金型との間に挟持し、
同時に複数のスチレン系樹脂発泡容器を成形するための
スチレン系樹脂発泡容器の成形用金型において、前記雄
金型を構成する複数の雄型駒及びこれら雄型駒に嵌合す
る前記雌金型を構成する複数の雌型駒のうち、少なくと
も雄型駒の嵌合面の前記スチレン系樹脂発泡シートに対
する摩擦係数を部分的に異ならせたスチレン系樹脂発泡
容器の成形用金型。
1. A styrene resin foam sheet that has passed through a heating furnace is sandwiched between male and female dies of male and female fitting dies,
In a mold for molding a styrene resin foam container for simultaneously molding a plurality of styrene resin foam containers, a plurality of male mold pieces constituting the male mold and the female mold fitted to these male mold pieces A mold for molding a styrene-based resin foam container in which a friction coefficient of at least a fitting surface of a male mold piece among the plurality of female mold pieces with respect to the styrene-based resin foam sheet is partially different.
【請求項2】 スチレン系樹脂発泡容器の成形用金型に
おける雄型駒の嵌合面のうち、成形される成形容器の底
部に対応する部位のスチレン系樹脂発泡シートに対する
摩擦係数を、該成形容器の底部に対応する部位を除いた
他の部位のスチレン系樹脂発泡シートに対する摩擦係数
よりも高くした請求項1記載のスチレン系樹脂発泡容器
の成形用金型。
2. The coefficient of friction with respect to the styrene resin foam sheet of a portion of the fitting surface of the male mold piece in the molding die of the styrene resin foam container corresponding to the bottom of the molding container to be molded is defined as the friction coefficient of the molding container. The mold for molding a styrene-based resin foam container according to claim 1, wherein a coefficient of friction with respect to the styrene-based resin foam sheet in a region other than the region corresponding to the bottom of the styrene resin foam is higher.
【請求項3】 スチレン系樹脂発泡容器の成形用金型に
おける雄型駒の嵌合面のうち、前記成形容器の底部に対
応する部位のスチレン系樹脂発泡シートに対する摩擦係
数と該成形容器の底部に対応する部位を除いた他の部位
のスチレン系樹脂発泡シートに対する摩擦係数との比を
1:0.1〜1:0.8の範囲にした請求項2記載のス
チレン系樹脂発泡容器の成形用金型。
3. A friction coefficient with respect to the styrene resin foam sheet at a portion corresponding to the bottom portion of the molding container in the fitting surface of the male mold in the molding die of the styrene resin foam container and the bottom portion of the molding container. The molding of a styrene-based resin foam container according to claim 2, wherein the ratio of the friction coefficient to the styrene-based resin foam sheet of the other parts excluding the corresponding part is in the range of 1: 0.1 to 1: 0.8. Mold.
【請求項4】 スチレン系樹脂発泡容器の成形用金型に
よって得られる成形容器の絞り比(容器高さ/容器口
径)が0.8以上である請求項2又は3記載のスチレン
系樹脂発泡容器の成形用金型。
4. The styrene-based resin foam container according to claim 2, wherein the molded container obtained by the molding die for the styrene-based resin foam container has a drawing ratio (container height / container diameter) of 0.8 or more. Mold for.
JP25965495A 1995-10-06 1995-10-06 Mold for styrenic resin foamed container Pending JPH0999484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25965495A JPH0999484A (en) 1995-10-06 1995-10-06 Mold for styrenic resin foamed container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25965495A JPH0999484A (en) 1995-10-06 1995-10-06 Mold for styrenic resin foamed container

Publications (1)

Publication Number Publication Date
JPH0999484A true JPH0999484A (en) 1997-04-15

Family

ID=17337060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25965495A Pending JPH0999484A (en) 1995-10-06 1995-10-06 Mold for styrenic resin foamed container

Country Status (1)

Country Link
JP (1) JPH0999484A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015189133A (en) * 2014-03-28 2015-11-02 積水化成品工業株式会社 Resin expanded sheet for deep draw molding, container, and method of manufacturing these

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015189133A (en) * 2014-03-28 2015-11-02 積水化成品工業株式会社 Resin expanded sheet for deep draw molding, container, and method of manufacturing these

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