JPS624211B2 - - Google Patents
Info
- Publication number
- JPS624211B2 JPS624211B2 JP6362078A JP6362078A JPS624211B2 JP S624211 B2 JPS624211 B2 JP S624211B2 JP 6362078 A JP6362078 A JP 6362078A JP 6362078 A JP6362078 A JP 6362078A JP S624211 B2 JPS624211 B2 JP S624211B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- male
- sheet
- gap
- foaming
- 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
- 238000005187 foaming Methods 0.000 claims description 23
- 238000000465 moulding Methods 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 229920001169 thermoplastic Polymers 0.000 claims description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims description 9
- 239000006260 foam Substances 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 3
- 229920005992 thermoplastic resin Polymers 0.000 claims description 3
- 238000007666 vacuum forming Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 6
- 235000013372 meat Nutrition 0.000 description 5
- 239000004793 Polystyrene Substances 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 229920005669 high impact polystyrene Polymers 0.000 description 2
- 239000004797 high-impact polystyrene Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011800 void material Substances 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/10—Applying counter-pressure during expanding
Landscapes
- Stackable Containers (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
ポリスチレン、スチレンを主体としスチレンと
共重合し得るブタジエン、メチルアクリレート等
の共重合体樹脂にプロパン、ブタン、フレオン等
の低沸点有機物質を保有せしめて製造される発泡
倍率８〜18倍程度の熱可塑性発泡樹脂シート、又
はこれ等の片面もしくは両面にポリスチレン
（PS）、ハイインパクトポリスチレン（HIPS）、
不延伸ポリプロピレン（CPP）、ポリエチレン
（PE）などからなる非発泡熱可塑性フイルムを積
層加工した発泡性複合シートを基材とした成形品
容器には一般にその品質特性としてシヤープな寸
法形状が達成されていることに加え安定的な積重
ね高さの維持と曲げタワミ変形を与えた時の十分
な反発性強度が要求されるものである。Detailed description of the invention: Expansion ratio produced by incorporating low boiling point organic substances such as propane, butane, freon, etc. into polystyrene, a copolymer resin mainly composed of styrene and copolymerizable with styrene, such as butadiene, methyl acrylate, etc. 8 to 18 times larger thermoplastic foam resin sheet, or polystyrene (PS), high impact polystyrene (HIPS) on one or both sides of this sheet,
Molded product containers based on foamed composite sheets made by laminating unexpanded thermoplastic films made of unoriented polypropylene (CPP), polyethylene (PE), etc., generally have sharp dimensions and shapes as their quality characteristics. In addition to this, it is required to maintain a stable stacking height and to have sufficient resilience strength when subjected to bending and deflection deformation.
通常の成形品容器は形状デザイン面より、必ら
ずその側壁部立上り角度が規定されるものである
が、此の場合には積重ね特に側壁部が互に接触す
る構造とするか否かに拘わらず、単純に積重ね高
さは側壁部肉厚の影響に依つて決定される。即
ち、側壁部肉厚を厚くとれば積重ね高さは高く維
持する必要が生じ、又逆に側壁部肉厚を薄くとれ
ば積重ね高さは低く維持し得る。 In a normal molded product container, the rising angle of the side wall is always specified from the shape design aspect, but in this case, the angle of rise of the side wall is always specified, but in this case, it is important to stack the containers regardless of whether the side walls are in contact with each other or not. First, the stacking height is simply determined by the influence of the side wall thickness. That is, if the side wall thickness is made thick, the stacking height must be maintained high, and conversely, if the side wall thickness is made thin, the stacking height can be maintained low.
尚、発泡性シートによつて作られる成形品容器
の積重ね高さは一般的に非発泡シートによつて作
られるものに比較して格段に大きいものである
が、これは軽量厚肉化発泡シート成形品の特質か
らして避け得られないものである。 Note that the stacking height of molded product containers made from foamed sheets is generally much larger than those made from non-foamed sheets; This is unavoidable due to the characteristics of molded products.
しかし乍ら、積重ね高さそのものを輸送面及び
在庫面から見た場合には出来るだけ低く維持した
方が積載個数が増えること及び同一個数に対して
は在庫スペースをより小さく保てることなどから
経済的により有利に作用するであろうことは容易
にうかがわれるも、一方、成形品容器に要求され
るタワミ変形強度を考えた場合には、基材の種類
及び目付量、発泡度等が同様なものでは単純に出
来るだけ厚肉形状とした方が全体の剛性度を高く
維持できることから逆な面で有利となり、結局、
両者は相反する方向での優劣性を呈するものとな
る。その様な状況下にあつて、本発明は成形品容
器の口部周辺で作用するタワミ変形強度は全体の
厚肉形状の影響によることもさることながら口部
周辺の肉厚と底部立上り周辺部の肉厚に特に多大
な相関性を有し、その傾向はミート・トレイ或は
弁当箱と云つた比較的延伸倍率の低い、しかも角
型形状の容器に殊に顕著に作用するものであるこ
とを発見してこの発明に到達した。即ち、厚肉化
の手段として、成形延伸シート厚みよりも大なる
空隙を有し、且つその周囲はクランプでエアタイ
ト可能とした構造で基材両表面より−500mmHg
（ゲージ圧）以上の真空圧例えば−600mmHg（ゲ
ージ圧）、−650mmHg（ゲージ圧）を適用し、且つ
雄金型については50〜60℃に温調された型内発泡
を可能とした雄雌嵌合の成形金型に加熱シートを
導いて、これを成形する際補強の対象を積重ね高
さに影響を及ぼす側壁部分を除いた範囲、即ち、
口部周辺、底部、及び底部立上り部周辺の一部又
は全部に限定して此の部分を更に高発泡厚肉状と
すべく、金型内を真空雰囲気下に維持することよ
り達成される限界的自由発泡構造とした形状にす
ることにより、与えられた基材でもつて積重ね高
さの制限範囲内で最高の強度体を有する成形容器
を得るべく金型の改良を行つたものである。 However, from the perspective of transportation and inventory, it is more economical to keep the stacking height as low as possible because it increases the number of items loaded and keeps the inventory space smaller for the same number of items. On the other hand, when considering the deflection deformation strength required for molded product containers, it is easy to see that the same type of base material, basis weight, foaming degree, etc. When it comes to things, it is better to simply make the shape as thick as possible because you can maintain a high overall rigidity, which is advantageous on the contrary, and in the end,
Both exhibit superiority and inferiority in contradictory directions. Under such circumstances, the present invention is designed to reduce the deflection deformation strength that acts around the mouth of a molded product container not only due to the influence of the overall thick-walled shape, but also due to the wall thickness around the mouth and the area around the rise of the bottom. There is a particularly strong correlation with the wall thickness of the material, and this tendency is particularly noticeable for containers with relatively low stretching ratios, such as meat trays or lunch boxes, and which have a rectangular shape. I discovered this and arrived at this invention. That is, as a means of increasing the thickness, the structure has a void larger than the thickness of the formed stretched sheet, and the surrounding area can be air-tight with a clamp, so that it is -500 mmHg from both surfaces of the base material.
(gauge pressure) or higher vacuum pressure, such as -600mmHg (gauge pressure) or -650mmHg (gauge pressure), and for male molds, the temperature is controlled at 50 to 60℃ to enable in-mold foaming. When the heated sheet is introduced into the fitting mold and molded, the area to be reinforced is the area excluding the side wall portion that affects the stacking height, i.e.
This limit is achieved by maintaining the inside of the mold under a vacuum atmosphere in order to make the area around the mouth part, the bottom part, and part or all of the area around the rising part of the bottom part more highly foamed and thick. By creating a shape with a free-foaming structure, the mold was improved in order to obtain a molded container with the highest strength within the stacking height limit for a given base material.
この発明は、熱可塑性発泡樹脂シート又は熱可
塑性発泡樹脂シートに非発泡熱可塑性樹脂層を積
層した複合発泡樹脂シートを加熱可塑化して真空
成形する雄雌嵌合の容器成形金型において、容器
の側壁部金型間隙は型内発泡にて達成される限界
的自由発泡度肉厚以下として成形品側壁肉厚寸法
を金型表面で規制し、その他の部分の金型間隙の
一部又は全部は型内発泡の限界的自由発泡度肉厚
以上とすることにより、型内自由発泡部を形成さ
せ得る構造とし、型の周囲をクランプ等で気密可
能とした構造の成形容器用金型である。 The present invention provides a male-female mating container forming mold for heating and plasticizing and vacuum forming a thermoplastic foamed resin sheet or a composite foamed resin sheet in which a non-foamed thermoplastic resin layer is laminated on a thermoplastic foamed resin sheet. The molded product side wall thickness is regulated on the mold surface so that the side wall mold gap is less than the critical free foaming degree wall thickness achieved by in-mold foaming, and part or all of the mold gap in other parts is This mold for a molded container has a structure in which a free foaming part can be formed in the mold by setting the wall thickness to the critical free foaming degree of foaming in the mold, and the periphery of the mold can be airtight with a clamp or the like.
第１図は当発明による金型例について成形品形
状が最終的に達成された状態での概略断面図を示
すものであり、第２図は同じくその比較を行う意
味から、従来通常の金型で熱可塑性発泡樹脂シー
トに対する型内発泡を伴う成形金型ではあるが、
その成形品肉厚寸法は金型両表面で規制を受ける
場合の概略断面図を示している。尚、各々には両
者の具体的内容の差異を明示すべく、口部周辺で
の加熱延伸発泡シートの型内発泡に伴う気泡形状
並びに断面形状の拡大図を示しているが、以下に
これ等について説明する。 Fig. 1 shows a schematic cross-sectional view of an example of the mold according to the present invention in a state where the shape of the molded product is finally achieved, and Fig. 2 shows a schematic cross-sectional view of a mold example of the present invention in a state where the shape of the molded product is finally achieved. Although it is a mold that involves in-mold foaming for a thermoplastic foam resin sheet,
A schematic cross-sectional view is shown in which the wall thickness of the molded product is regulated on both surfaces of the mold. In order to clearly show the difference in the specific content between the two, enlarged views of the bubble shape and cross-sectional shape of the heated stretched foam sheet around the mouth are shown below. I will explain about it.
一般に成形操作そのものは可塑化と軟化、発泡
が行われた加熱シートを成形ステーシヨンに導く
と同時に金型２及び３（２′及び３′）でまず延伸
成形を行い、金型口部周辺と発泡シートとの間で
型締めによるエアタイトがなされた状態で真空ポ
ンプより配管５，５′を介して、金型両表面に通
じる細孔４，４′より真空圧を適用することから
未だ可塑化状態に保たれている延伸シート１，
１′は独立気泡内ガス圧力と気泡を形成する熱可
塑性樹脂の粘弾性力に起因する張力のバランスの
下に型内発泡を生じ、最終的には金型面２，３，
２′，３′より樹脂温を奪われて、冷却固化される
ことから成形形状が達成されるものであり、成形
の操作そのものとしては殊に両者の間で差異を有
するものではない。 In general, the molding operation itself is such that the heated sheet that has been plasticized, softened, and foamed is led to the molding station, and at the same time stretch molding is first performed in molds 2 and 3 (2' and 3'), and the foam is formed around the mold mouth. With air tightness formed between the sheet and the mold by clamping, vacuum pressure is applied from the vacuum pump through the pores 4 and 4' that communicate with both surfaces of the mold via piping 5 and 5', so that the plasticized state is still maintained. Stretched sheet 1 kept at
1' causes foaming within the mold under the balance between the gas pressure within the closed cells and the tension caused by the viscoelastic force of the thermoplastic resin forming the bubbles, and finally the mold surfaces 2, 3,
The molded shape is achieved by cooling and solidifying the resin by removing the resin temperature from 2' and 3', and there is no particular difference between the two in terms of the molding operation itself.
しかし乍ら、第２図に於いて示されている通
り、熱可塑性発泡樹脂シートに対する此の場合の
成形法とは、マツチド・モールドと呼称されてい
るもので雄雌両金型の嵌合時、間隙形状が目標と
する成形品断面形状と同一となるべく設計されて
おり、その場合の成形品各部の肉厚は型内発泡に
て達成される限界的発泡度肉厚以下とすることか
ら、即ち成形品内外面形状とその肉厚寸法は金型
表面で完全に規制を受けるものであるのに対し
て、本発明の方法によるものでは第１図に示す如
く、積重ね高さに影響する側壁部肉厚寸法を除い
た口部周辺及び底部とその周辺については金型の
一方の面からのみしか形状規制を行わない。即
ち、成形品を雄金型に沿つた形状とするか、雌金
型に沿つた形状とするかは、その都度の市場から
の要求によつて定めるとするも延伸シートの両面
に適用する真空圧に圧力調整弁をもつて圧力差を
作用させることから任意の形状が選択し得るもの
であるが、いずれにしろ片面からのみしか形状規
制を行わず此の部分を型内発泡によつて達成され
る限界的自由発泡肉厚で成形品を構成することか
ら、口部に於いて発生するタワミ変形強度の補強
を図つたところに大きな特徴を有するものであ
る。 However, as shown in Figure 2, the molding method used for the thermoplastic foam sheet in this case is called a mated mold, in which both male and female molds are fitted together. , the gap shape is designed to be the same as the target cross-sectional shape of the molded product, and in that case, the wall thickness of each part of the molded product is below the critical foaming degree wall thickness achieved by in-mold foaming. In other words, the inner and outer shapes of the molded product and its wall thickness are completely controlled by the mold surface, whereas in the method of the present invention, as shown in FIG. The shape of the mouth area, bottom area, and surrounding area, excluding the wall thickness, is restricted only from one side of the mold. In other words, whether the shape of the molded product is to follow the male mold or the female mold is determined by the market demand in each case, but the vacuum applied to both sides of the stretched sheet is Any shape can be selected because a pressure difference is applied to the pressure by using a pressure regulating valve, but in any case, the shape is restricted only from one side and this part is achieved by in-mold foaming. Since the molded product is constructed with a limited free-foaming wall thickness, the major feature is that it aims to strengthen the deflection deformation strength that occurs at the mouth.
実施例 １
発泡剤としてフレオンを用いたポリスチレンを
基材とする厚み２mm、発泡倍率11.3倍の押出しシ
ートを養生後、炉内温度180℃に設定した遠赤外
線加熱炉で10秒加熱した時の平均発泡厚みは4.2
mmであつた。これを縦横外形寸法160×160mm、絞
り深さ22mm、立上り角度35.5゜、側壁部金型間隙
3.37mm、口部頂辺及び底面部より5.5mm高さ範囲
を自由発泡構造としたミート・トレイ金型で雄型
面真空度−650mmHg（ゲージ圧）、雌型面真空度
−600mmHg（ゲージ圧）を適用して成形したミー
ト・トレイは口部周辺肉厚が4.7mm、側壁部肉厚
3.37mm、底立上り部肉厚4.6mmの内面形状が雄型
金型表面形状と一致するものであり、100枚当り
の積重ね高さは580mm、口部周辺中央に５mmの集
中的変形歪を与えた時の反発性強度390gを有す
るものであつた。Example 1 Average when an extruded sheet with a thickness of 2 mm and a foaming ratio of 11.3 times made of polystyrene as a base material using Freon as a blowing agent was heated for 10 seconds in a far-infrared heating furnace set at an internal temperature of 180°C after curing. Foaming thickness is 4.2
It was warm in mm. This has vertical and horizontal external dimensions of 160 x 160 mm, drawing depth of 22 mm, rising angle of 35.5°, and side wall mold gap.
3.37mm, a meat tray mold with a free foaming structure at a height of 5.5mm from the top and bottom of the mouth.The male mold surface vacuum level is -650mmHg (gauge pressure), and the female mold surface vacuum level is -600mmHg (gauge pressure). ) The meat tray formed by applying the method has a wall thickness of 4.7 mm around the mouth and a wall thickness of the side wall.
3.37 mm, the inner surface shape of the bottom rising wall thickness of 4.6 mm matches the surface shape of the male mold, the stacking height per 100 sheets is 580 mm, and a concentrated deformation strain of 5 mm is applied to the center around the mouth. It had a repulsion strength of 390 g when
これに対して、各部の金型間隙が3.37mmの、成
形品肉厚が内外面両方共、金型表面形状で現制を
受ける従来方式の金型で−600mmHgの真空度を適
用して成形したものは、各部の肉厚が3.37mm、
100枚当りの積重ね高さが580mm、口部周辺に５mm
の集中的変形歪を与えた時の反発性強度は340g
を有するものであつた。 In contrast, molding is performed using a conventional mold with a mold gap of 3.37 mm and a vacuum level of -600 mmHg, where both the inner and outer wall thickness of the molded product is subject to current regulations based on the mold surface shape. The wall thickness of each part is 3.37mm,
Stacking height per 100 sheets is 580mm, 5mm around the mouth.
The repulsion strength when subjected to concentrated deformation strain is 340g
It had the following characteristics.
実施例 ２
発泡剤としてフレオンを用いたポリスチレンを
基材とする厚み２mm、発泡倍率14倍の押出しシー
トを養生後、炉内温度200℃に設定した遠赤外線
加熱炉で6.5秒加熱した時の平均発泡厚みは3.7mm
であつた。これを縦横外形寸法250×100mm、絞り
深さ15mm、立上り角度35.5゜、側壁部金型間隙
3.37mm、口部頂辺及び底面部より5.8mm高さ範囲
を自由発泡構造としたミート・トレイ金型で雄型
面真空度−650mmHg（ゲージ圧）、雌型面真空度
−600mmHg（ゲージ圧）を適用して成形したミー
ト・トレイは口部周辺肉厚が4.5mm、側壁部肉厚
3.37mm、底立上り部肉厚4.8mmの内面形状が雄型
金型表面形状と一致するものであり、100枚当り
の積重ね高さは580mm、口部周辺中央に５mmの集
中的変形歪を与えた時の反発性強度375gを有す
るものであつた。Example 2 Average when an extruded sheet with a thickness of 2 mm and a foaming ratio of 14 times, made of polystyrene as a base material using Freon as a blowing agent, was heated for 6.5 seconds in a far-infrared heating furnace set at an internal temperature of 200°C after curing. Foaming thickness is 3.7mm
It was hot. This has vertical and horizontal external dimensions of 250 x 100 mm, drawing depth of 15 mm, rising angle of 35.5°, and side wall mold gap.
3.37mm, the meat tray mold has a free foaming structure at a height of 5.8mm from the top and bottom of the mouth, and the vacuum level on the male mold side is -650mmHg (gauge pressure), and the vacuum level on the female mold side is -600mmHg (gauge pressure). ) The meat tray formed by applying the method has a wall thickness of 4.5 mm around the mouth and a wall thickness of the side wall.
3.37 mm, the inner surface shape of the bottom rising wall thickness of 4.8 mm matches the surface shape of the male mold, the stacking height per 100 sheets is 580 mm, and a concentrated deformation strain of 5 mm is applied to the center around the mouth. It had a repulsion strength of 375 g when
これに対して、各部の金型間隙が3.37mmの成形
品肉厚が内外面両方共、金型表面形状で規制を受
ける従来方式の金型で−600mmHg（ゲージ圧）の
真空度を適用して成形したものは、各部の肉厚が
3.37mm、100枚当りの積重ね高さが580mm、口部周
辺に５mmの集中的変形歪を与えた時の反発性強度
は325gを有するものであつた。 On the other hand, in a conventional mold where the mold gap between each part is 3.37 mm and the thickness of the molded product on both the inner and outer surfaces is regulated by the mold surface shape, a vacuum of -600 mmHg (gauge pressure) is applied. The thickness of each part of the molded product is
3.37 mm, the stacking height per 100 sheets was 580 mm, and the repulsion strength was 325 g when a concentrated deformation strain of 5 mm was applied around the mouth.
第１図−１は本発明の成形金型の成形終了時の
状態を示す説明用断面図、第１図−２はその成形
容器の口部周辺部の拡大断面図、第２図−１は従
来通常の成形金型の成形終了時の状態を示す説明
用断面図、第２図は−２はその成形容器口部周辺
部の拡大断面図。
１，１′は成形熱可塑性発泡樹脂シート、２，
３及び２′，３′は金型、４，４′は真空用細孔、
５，６及び５′，６′は真空ポンプよりの配管。
Fig. 1-1 is an explanatory sectional view showing the state of the molding die of the present invention at the end of molding, Fig. 1-2 is an enlarged sectional view of the area around the mouth of the molded container, and Fig. 2-1 is An explanatory cross-sectional view showing the state of a conventional conventional molding die at the end of molding. FIG. 1, 1' are molded thermoplastic foam resin sheets; 2,
3, 2', 3' are molds, 4, 4' are vacuum holes,
5, 6 and 5', 6' are piping from the vacuum pump.
Claims (1)
熱可塑性樹脂層を積層した複合発泡性樹脂シート
からの容器成形用雄雌嵌合金型において、雄雌両
金型の間隙の大きさは、容器の底部分、底部の周
辺立上り部分及び口部周辺部分ではシートの型内
発泡の自由発泡肉厚より大きくし、容器の側壁部
の間隙はシートの自由発泡肉厚以下であり、真空
吸引孔を雄雌両金型の間隙の両側に各々設けてな
る雄雌両金型からなる熱可塑性発泡性樹脂シート
の両面真空成形用金型。1. In a male and female mold for molding a container from a thermoplastic foam resin sheet or a composite foam resin sheet laminated with a non-foamed thermoplastic resin layer, the size of the gap between the male and female molds is determined by the size of the gap between the male and female molds. The bottom part, the rising part around the bottom part, and the part around the mouth part are made larger than the free foaming thickness of the sheet that is foamed in the mold, the gap on the side wall of the container is less than the free foaming thickness of the sheet, and the vacuum suction hole is A mold for double-sided vacuum forming of a thermoplastic foaming resin sheet, comprising male and female molds each provided on both sides of a gap between the female and female molds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6362078A JPS54154472A (en) | 1978-05-26 | 1978-05-26 | Mold for formed vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6362078A JPS54154472A (en) | 1978-05-26 | 1978-05-26 | Mold for formed vessel |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22719784A Division JPS60192615A (en) | 1984-10-29 | 1984-10-29 | Vacuum-molding method of both surfaces of container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54154472A JPS54154472A (en) | 1979-12-05 |
| JPS624211B2 true JPS624211B2 (en) | 1987-01-29 |
Family
ID=13234538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6362078A Granted JPS54154472A (en) | 1978-05-26 | 1978-05-26 | Mold for formed vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54154472A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0540816Y2 (en) * | 1986-09-30 | 1993-10-15 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6360727A (en) * | 1986-09-01 | 1988-03-16 | Sekisui Plastics Co Ltd | Manufacture of vessel made of foamed sheet and molding tool therefor |
| JP3324977B2 (en) * | 1998-02-06 | 2002-09-17 | ハウス食品株式会社 | Sealed container |
| US20030010350A1 (en) * | 2001-07-11 | 2003-01-16 | De Laforcade Vincent | Foam core cosmetic case |
| JP6928422B2 (en) * | 2015-02-26 | 2021-09-01 | 中央化学株式会社 | Packaging container, manufacturing method and usage of packaging container |
| JP6908969B2 (en) * | 2015-02-26 | 2021-07-28 | 中央化学株式会社 | Packaging container |
-
1978
- 1978-05-26 JP JP6362078A patent/JPS54154472A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0540816Y2 (en) * | 1986-09-30 | 1993-10-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54154472A (en) | 1979-12-05 |
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