JPH01212237A - Method for molding hollow glass container - Google Patents
Method for molding hollow glass containerInfo
- Publication number
- JPH01212237A JPH01212237A JP3780888A JP3780888A JPH01212237A JP H01212237 A JPH01212237 A JP H01212237A JP 3780888 A JP3780888 A JP 3780888A JP 3780888 A JP3780888 A JP 3780888A JP H01212237 A JPH01212237 A JP H01212237A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- hollow glass
- molding
- glass container
- steam cushion
- 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
- 239000011521 glass Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000000465 moulding Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000498 cooling water Substances 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 230000035699 permeability Effects 0.000 claims abstract description 5
- 239000004575 stone Substances 0.000 abstract description 16
- 238000007664 blowing Methods 0.000 abstract description 7
- 230000008021 deposition Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 238000000071 blow moulding Methods 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 206010067482 No adverse event Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、中空ガラス容器の成形方法に関する。更に詳
しくは、コツプ等の中空ガラス容器を、カーボンモール
ドを利用した回し吹き方式の中空ガラス製品自動成形機
によって成形する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for forming hollow glass containers. More specifically, the present invention relates to a method for molding hollow glass containers such as pots using a rotary-blowing automatic molding machine for hollow glass products using a carbon mold.
（従来の技術）
従来、回し吹き方式の自動成形機による中空ガラス容器
の成形は、通常ガラスゴブを祖型内へ投入しプランジャ
によってプレス成形されたパリソンを伸長後、該パリソ
ンを仕上型内において回し吹きしながら成形するもので
あり、均一な肉厚と滑らかな表面の中空ガラス容器が得
られるという利点を有する。そして、更に滑らかな表面
を有する中空ガラス容器を得るために、仕上型内にアマ
ニ油、転油、にかわ等で作ったペーストとコルク粉との
混線物を塗布接着後、焼き付けして吸水性皮膜を形成（
この金型はペーストモールドと称される）し、その皮膜
に冷却水を浸透させることにより成形中に皮膜内の水分
からの蒸気層（スチームクッションという）によってガ
ラスが直接金型内面に接触しないように成形し、いわゆ
る宙吹法と称される人工吹製品の有するガラス表面の光
沢に近づけている。(Prior art) Conventionally, in the molding of hollow glass containers using a rotary blowing automatic molding machine, a glass gob is usually introduced into a master mold, a press-formed parison is expanded by a plunger, and then the parison is rotated in a finishing mold. It is molded while blowing, and has the advantage of producing hollow glass containers with uniform wall thickness and smooth surfaces. In order to obtain a hollow glass container with an even smoother surface, a mixture of paste made from linseed oil, converted oil, glue, etc. and cork powder was applied and bonded into the finishing mold, and then baked to form a water-absorbing film. form (
This mold is called a paste mold), and by infiltrating the film with cooling water, a vapor layer (called a steam cushion) from the moisture in the film prevents the glass from coming into direct contact with the inner surface of the mold during molding. The surface of the glass is similar to that of artificially blown products using the so-called air-blown method.
一方、前記ペーストモールドによる成形方法においては
、吸水性皮膜の厚さが０．２〜０．４−と薄いために十
分なスチームクッションが発生されず、ガラス製品表面
にリングと称されるスジが付きやすい、あるいは吸水性
皮膜が高温のガラスとの接触により次第に摩耗するため
約６〜７時間（出願人の実績値）で仕上型を交換しなけ
ればならず、更には取り外した金型のメンテナンス作業
に多（の労力を必要とする等の欠点があり、それを解消
する方法としてカーボンモールドを利用した成形方法の
開発を行い先に特願昭６１−９４２８号、特願昭６１−
５７４４７号として出願した。On the other hand, in the above molding method using paste molding, the thickness of the water-absorbing film is as thin as 0.2 to 0.4 -, so a sufficient steam cushion is not generated, resulting in streaks called rings on the surface of the glass product. Because the water-absorbing film that tends to adhere or gradually wears out due to contact with high-temperature glass, the finishing mold must be replaced after approximately 6 to 7 hours (according to the applicant's actual results), and further maintenance of the removed mold is required. There are disadvantages such as requiring a lot of labor, and as a way to solve this problem, we developed a molding method using a carbon mold and published Japanese Patent Application No. 61-9428 and Japanese Patent Application No. 61-9428.
The application was filed as No. 57447.
ところが、成形時間が長くなるにつれてスチームクッシ
ョンを形成するのに使用される冷却水中に含まれる不純
物（シリカ、カルシウム、マグネシウム等）によって仕
上型内に白色の石を堆積し、成形されるガラス製品に付
着したり、製品表面にリング状のスジを発生させる等の
不良品を成形する一因となっており、不純物による石の
堆積を防止できる成形方法の開発が望まれていた。However, as the molding time increases, impurities (silica, calcium, magnesium, etc.) contained in the cooling water used to form the steam cushion cause white stones to build up in the finishing mold, causing problems in the glass product being molded. It has been desired to develop a molding method that can prevent the accumulation of stones due to impurities, which is a contributing factor to the molding of defective products such as adhesion and ring-shaped streaks on the product surface.
（発明が解決しようとする課題）
本発明は、このような従来の回し吹き成形方法による問
題点を解決して、仕上型内表面に堆積する石の発生を防
止することにより、製品への石の付着を防止し、あるい
は石によって製品表面にり ゛ング状のスジを生じ
させることがなく、又、仕上型の交換作業を長時間必要
とせず、従って金型のメンテナンス作業が大幅に削減で
きる中空ガラス容器の回し吹き成形方法を提供すること
を目的として完成されたものである。(Problems to be Solved by the Invention) The present invention solves the problems with the conventional rotary blow molding method and prevents stones from accumulating on the inner surface of the finishing mold. It prevents the adhesion of stones or the formation of scratch-like streaks on the product surface due to stones, and there is no need to replace finishing molds for a long time, thus greatly reducing mold maintenance work. It was completed for the purpose of providing a method for rotary blow molding of hollow glass containers.
（課題を解決するための手段）
本発明は、仕上型内に冷却水を供給してスチームクッシ
ョンを形成し、該スチームクッションを介在させつつ仕
上型内のパリソンを回し吹きする中空ガラス容器の成形
方法において、前記冷却水として、不純物の少ない純水
を供給するとともに、仕上型内に装着されたＩ Ｘ １
０−２〜６Ｘ１０−２（−・ｅｌｌ ／ ｃｊ・秒・ｅ
ｒａ Ｈ２０）の通気率を有するカーボンモールドによ
ってスチームクッションを発生させることを特徴とする
ものである。(Means for Solving the Problems) The present invention supplies cooling water into a finishing mold to form a steam cushion, and forms a hollow glass container by rotating and blowing the parison in the finishing mold while interposing the steam cushion. In the method, pure water with few impurities is supplied as the cooling water, and an I
0-2~6X10-2(-・ell/cj・sec・e
It is characterized by generating a steam cushion using a carbon mold having an air permeability of RA H20).
（実施例） 次に本発明を図示の実施例について詳細に説明する。(Example) The present invention will now be described in detail with reference to the illustrated embodiments.
第１図（ａ）〜（Ｃ）は中空ガラス容器の回し吹き成形
方法の概略工程図を示すもので、先ず第１図（ａ）に示
される組型１とプランジャ２、口型３、プランジャリン
グ４とによって肉厚の底部を有するパリソンを成形する
。この工程は当業者間では周知であるから詳細な説明は
省略する。パリソン５が成形された後、金型１は下降し
、プランジャ２及びプランジャリング４は上昇してパリ
ソン５がその口部を口型３に把持されて吊される。この
時、口型３が回転を開始するので、パリソン５はこの状
態で自重により次第に垂れ下がり、第１図（ｂ）の状態
になったとき分割式の仕上型６がパリソン５を包み込む
ように閉じてくる。FIGS. 1(a) to (C) show a schematic process diagram of a rotary blow molding method for hollow glass containers. First, the mold 1, plunger 2, mouth mold 3, and plunger The ring 4 forms a parison with a thick bottom. This step is well known to those skilled in the art, so detailed explanation will be omitted. After the parison 5 is molded, the mold 1 is lowered, the plunger 2 and the plunger ring 4 are raised, and the parison 5 is suspended with its mouth portion held by the mouth mold 3. At this time, the mouth mold 3 starts rotating, so the parison 5 gradually hangs down due to its own weight, and when the state shown in FIG. 1(b) is reached, the split-type finishing mold 6 closes to wrap around the parison 5. It's coming.
第２図に示すように、分割式の仕上型６は本体７にカー
ボンモールド８がインサートされた構造であり、カーボ
ンモールド８は上下両端を固定されるとともに、中央部
において固定金具９でもって脱落しないようしっかりと
本体７内に装着されている。As shown in Fig. 2, the split-type finishing mold 6 has a structure in which a carbon mold 8 is inserted into a main body 7, and the carbon mold 8 is fixed at both upper and lower ends, and is removed by a fixing fitting 9 at the center. It is securely installed inside the main body 7 to prevent it from happening.
カーボンモールド８は、成形しようとするガラス容器の
側壁肉厚の８倍前後の肉厚をもたせたもので、Ｉ Ｘ
１０−１１〜６ Ｘ １０−２ （ｃｄ−ｃｗ＋／ａ＋
Ｌ秒・ｃｔａ Ｈ２０）の通気性を持つカーボン素材か
らなるものである。又、圧縮強度は２９０（ｋｇ／ｃｄ
）以上、熱伝導率は１〜２ （Ｋｃａｌ／’Ｃ・ｈ「１
）程度が好ましい。特に、通気性は上記範囲内にあるこ
とが必要であり、この範囲未満では十分な水分をカーボ
ンモールド８中に含まれることができず、リング状のス
ジを発生しやすくなり、逆にこの範囲を越えると水分含
有量が過多となってガラス表面が冷却され、美しい仕上
面が得られなくなるおそれがある。又、圧縮強度が上記
範囲より小さいと強度が劣ってモールドが破損するおそ
れが生じ、一方、熱伝導率が上記範囲未満ではガラス温
度が十分に下がらず変形するおそれがあり、逆にこれよ
り大きいとガラス温度が下がりすぎて十分なスチームク
ッションを得られず、スジが発生するおそれがある。The carbon mold 8 has a wall thickness that is approximately 8 times the side wall thickness of the glass container to be molded.
10-11~6 X 10-2 (cd-cw+/a+
It is made of carbon material with breathability of L seconds/cta H20). In addition, the compressive strength is 290 (kg/cd
), the thermal conductivity is 1 to 2 (Kcal/'C・h"1
) degree is preferable. In particular, the air permeability needs to be within the above range; if it is less than this range, sufficient moisture cannot be contained in the carbon mold 8 and ring-shaped streaks are likely to occur; If it exceeds this amount, the water content will be too high and the glass surface will be cooled, which may make it impossible to obtain a beautiful finished surface. In addition, if the compressive strength is lower than the above range, the strength will be poor and there is a risk of mold damage.On the other hand, if the thermal conductivity is lower than the above range, the glass temperature will not be lowered sufficiently and there is a risk of deformation, and conversely if it is higher than this, there is a risk of deformation. If the glass temperature drops too low, a sufficient steam cushion may not be obtained and streaks may occur.
第１図（Ｃ）に示すように、パリソン５を成形後ガラス
容器の底部を成形する底型１０が上昇してきて各金型が
組み合わされる。その後、口型３の上面にブローへラド
１１が密着して矢印のように空気を吹き込み、パリソン
５を仕上型６及び底型１０の内部形状に沿ってふくらま
せる。As shown in FIG. 1(C), after forming the parison 5, the bottom mold 10 for forming the bottom of the glass container is raised and the respective molds are combined. Thereafter, a blowing rod 11 is brought into close contact with the upper surface of the mouth mold 3 and blows air in the direction of the arrow to inflate the parison 5 along the internal shape of the finishing mold 6 and the bottom mold 10.
これらの成形工程中、仕上型に対して多量の水を供給す
る工程（図示せず）は従来のものと同様であることは言
うまでもない。この間パリソン５は自転を続けるので、
その表面はスチームクッションを介在させつつ成形が行
なわれ、いわゆる回し吹き成形によってガラス容器が成
形される。Needless to say, during these molding steps, the step (not shown) of supplying a large amount of water to the finishing mold is the same as in the conventional method. During this time, parison 5 continues to rotate, so
The surface is molded with a steam cushion interposed, and a glass container is formed by so-called rotary blow molding.
前記スチームクッションを発生させるために供給される
冷却水としてはシリカ、カルシウム、マグネシウム等の
不純物の少ない純水を使用す、る。純水の供給方法とし
ては、従来の給水配管を使用して供給源から純水を使用
する方法、あるいは純水配管の途中にイオン交換フィル
ターを介して最終供給時に純水を供給する方法等積々の
方式が採用でき、要はスチームクッション発生のための
冷却水の供給として不純物の少ない純水が供給されれば
その手段は問わない。As the cooling water supplied to generate the steam cushion, pure water containing few impurities such as silica, calcium, and magnesium is used. Pure water can be supplied using conventional water supply piping from the source, or through an ion exchange filter midway through the pure water piping to supply pure water at the final supply. Various methods can be adopted, and the point is that any method is acceptable as long as pure water with few impurities is supplied as cooling water for generating the steam cushion.
この後工程として、上方部分（一般にモイルと称される
）を切断し最終製品とするが、この工程は従来のものと
全く同様である。As a post-process, the upper part (generally referred to as moil) is cut to form a final product, and this process is exactly the same as the conventional one.
（作用）
本発明に係る中空ガラス容器の成形方法においては、ス
チームクッションを発生させるために供給される冷却水
としてシリカ、カルシウム、マグネシウム等の不純物の
少ない純水を使用するので、成形時間が長くなっても仕
上型内表面に白色の石が堆積することはない。すなわち
、前記の不純物を含む冷却水は高温状態にある仕上型内
表面に供給されると水分が蒸発され、不純物の濃度が次
第に高（なり、先ず最初に炭酸カルシウムのコロイドが
形成され、その後頁に濃度が高（なると該コロイドにシ
リカ、マグネシウムが吸着されて不溶性の白色の石を形
成し仕上型内表面に石を堆積するのである。従って、冷
却水として不純物の少ない純水を使用する本発明におい
ては、長時間の使用であっても仕上型内表面に石の堆積
を防止でき、石の発生による製品への悪影響を完全に防
止することができる。(Function) In the method for molding a hollow glass container according to the present invention, since pure water containing few impurities such as silica, calcium, and magnesium is used as the cooling water supplied to generate a steam cushion, the molding time is long. Even if this happens, white stones will not accumulate on the inner surface of the finished mold. In other words, when the cooling water containing impurities is supplied to the inner surface of the finishing mold which is in a high temperature state, the moisture is evaporated and the concentration of impurities gradually increases (first, colloid of calcium carbonate is formed, and then a colloid of calcium carbonate is formed. When the concentration is high (when the colloid has a high concentration, silica and magnesium are adsorbed to the colloid, forming an insoluble white stone and depositing the stone on the inner surface of the finished mold. Therefore, it is recommended to use pure water with few impurities as cooling water. In the present invention, it is possible to prevent stones from accumulating on the inner surface of the finishing mold even when the mold is used for a long time, and it is possible to completely prevent the occurrence of stones from having an adverse effect on the product.
一方、仕上型としてＩ Ｘ １０−２〜６Ｘ１０−２（
Ｃ−・ｒｓ ／ ｃｊ・秒・ｃｔａ Ｈ２０）の通気率
、２９０（ｋｇｌｄ）以上の圧縮強度、１〜２（ＫＣａ
ｌ／℃・ｈ「・Ｉ）の熱伝導率を有するカーボンモール
ドを使用することにより、十分なスチームクッションを
介在させつつ中空ガラス容器を回し吹きするので、ガラ
ス表面には全くリング状のスジを生ずることがなくなる
。又、従来のペーストモールドに比較しても耐熱性、耐
摩耗性、耐久性のいずれの点においても優れたものであ
る。On the other hand, IX 10-2 to 6X10-2 (
Air permeability of C-・rs/cj・sec・cta H20), compressive strength of 290 (kgld) or more, 1~2 (KCa
By using a carbon mold with a thermal conductivity of 1/℃・h"・I), the hollow glass container is blown with a sufficient amount of steam cushion, so there are no ring-shaped streaks on the glass surface. Furthermore, compared to conventional paste molds, it is superior in terms of heat resistance, abrasion resistance, and durability.
尚、本発明の方法によってロ外径５１ｍｍ、高さ１１０
２ａ、容量１５０ｃｃのガラスタンブラ−の回し吹き成
形を行なったところ、従来のペーストモールドの平均耐
用時間が６．５時間であったのに対して、６０時間連続
使用しても仕上型内に石の堆積は見られず、石による製
品への悪影響は全く見られなかった。又、スチームクッ
ション不足によるリング状のスジの発生も全くなかった
。In addition, by the method of the present invention, the outer diameter of B is 51 mm and the height is 110 mm.
2a. When a glass tumbler with a capacity of 150 cc was round-blown, the average service life of a conventional paste mold was 6.5 hours, but stones remained in the finished mold even after continuous use for 60 hours. No accumulation of stones was observed, and no adverse effects on the products due to stones were observed. Further, there was no occurrence of ring-shaped streaks due to insufficient steam cushioning.
（発明の効果）
本発明は以上の説明からも明らかなように、回し吹きさ
れたガラス製品の表面にスチームクッション不足による
リング状のスジを生じさせることなく、又、仕上型内で
の石の堆積による製品への付着、あるいはリング状スジ
の発生等の欠点を発生させることなく、更には仕上型を
従来の９倍以上の長時間にわたり連続使用することがで
きるものであり、成形品の品質向上とともにモールドの
メンテナンス工数の削減をも図ることができる中空ガラ
ス容器の成形方法として、ガラス成形業界に寄与すると
ころは極めて大である。４、図面の簡単な説明
第１図（ａ）〜（Ｃ）は本発明の実施例の概略工程図を
示し、第２図は実施例の仕上型正面図を示すものである
。(Effects of the Invention) As is clear from the above description, the present invention eliminates the occurrence of ring-shaped streaks on the surface of a spin-blown glass product due to lack of steam cushion, and prevents the formation of stone in the finishing mold. Furthermore, the finished mold can be used continuously for a longer period of time, nine times longer than conventional methods, without causing defects such as adhesion to the product due to deposition or the generation of ring-shaped streaks, and it improves the quality of the molded product. This method will greatly contribute to the glass molding industry as a hollow glass container molding method that can improve the mold maintenance process and reduce mold maintenance man-hours. 4. Brief description of the drawings FIGS. 1(a) to (C) show schematic process diagrams of an embodiment of the present invention, and FIG. 2 shows a front view of a finished mold of the embodiment.
Claims (1)
を形成し、該スチームクッションを介在させつつ仕上型
内のパリソンを回し吹きする中空ガラス容器の成形方法
において、前記冷却水として不純物の少ない純水を供給
するとともに、仕上型内に装着された１×１０＾−＾２
〜６×１０＾−＾２（ｃｍ＾３・ｃｍ／ｃｍ＾２・秒・
ｃｍＨ＿２Ｏ）の通気率を有するカーボンモールドによ
ってスチームクッションを発生させることを特徴とする
中空ガラス容器の成形方法。(1) In a method for forming a hollow glass container, in which cooling water is supplied into a finishing mold to form a steam cushion, and the parison in the finishing mold is blow-blown while the steam cushion is interposed, the cooling water has a low level of impurities. 1×10^-^2 installed in the finishing mold as well as supplying pure water
~6×10^-^2 (cm^3・cm/cm^2・second・
A method for molding a hollow glass container, characterized in that a steam cushion is generated by a carbon mold having an air permeability of cmH_2O).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3780888A JPH01212237A (en) | 1988-02-20 | 1988-02-20 | Method for molding hollow glass container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3780888A JPH01212237A (en) | 1988-02-20 | 1988-02-20 | Method for molding hollow glass container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01212237A true JPH01212237A (en) | 1989-08-25 |
Family
ID=12507810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3780888A Pending JPH01212237A (en) | 1988-02-20 | 1988-02-20 | Method for molding hollow glass container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01212237A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS619251A (en) * | 1984-06-21 | 1986-01-16 | Asahi Chem Ind Co Ltd | Production of beverage of soybean milk |
| JPS62216926A (en) * | 1986-03-15 | 1987-09-24 | Ishizuka Glass Ltd | Method for molding hollow glass vessel |
-
1988
- 1988-02-20 JP JP3780888A patent/JPH01212237A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS619251A (en) * | 1984-06-21 | 1986-01-16 | Asahi Chem Ind Co Ltd | Production of beverage of soybean milk |
| JPS62216926A (en) * | 1986-03-15 | 1987-09-24 | Ishizuka Glass Ltd | Method for molding hollow glass vessel |
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