JPH04131220A - Blow molding method and blow mold of bottle - Google Patents
Blow molding method and blow mold of bottleInfo
- Publication number
- JPH04131220A JPH04131220A JP2256217A JP25621790A JPH04131220A JP H04131220 A JPH04131220 A JP H04131220A JP 2256217 A JP2256217 A JP 2256217A JP 25621790 A JP25621790 A JP 25621790A JP H04131220 A JPH04131220 A JP H04131220A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- cavity
- blow molding
- bottle
- blow
- 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
- 238000000071 blow moulding Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000007664 blowing Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000009998 heat setting Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 210000001015 abdomen Anatomy 0.000 abstract 5
- 230000008961 swelling Effects 0.000 abstract 2
- 238000000465 moulding Methods 0.000 description 4
- 229920006015 heat resistant resin Polymers 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000013007 heat curing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 102100027340 Slit homolog 2 protein Human genes 0.000 description 1
- 101710133576 Slit homolog 2 protein Proteins 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 235000013334 alcoholic beverage Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/54—Moulds for undercut articles
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/54—Moulds for undercut articles
- B29C2049/542—Moulds for undercut articles having means to facilitate the removal of the blow moulded articles
- B29C2049/546—Moulds for undercut articles having means to facilitate the removal of the blow moulded articles by translatorilly actuating an auxiliary mould part while the mould is still in a closed position
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
- B29C33/46—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles using fluid pressure
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- 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−１
本発明は、ボトルの一軸延伸：１７” Ｄ〜１＆形）】
法及びプ゛「１・−成形型に関し、特（１“′ボ）・ル
の胴部分の賦形株確実にし２、機、械的強羨及び鉦１熱
性（、二優れたボトルを−りλることのでＳる二１ＩＩ
（延伸ブＩ−７−成形力法及、びぞれＩＪ用いるブ１〜
Ｉ−成形型１、−関する。[Detailed Description of the Invention] [Industrial Application Field-1 The present invention relates to uniaxial stretching of bottles: 17” D ~ 1 & shape)]
1. Concerning the mold, special measures should be taken to ensure the molding stock of the body part of the bottle.2. Because it is λ, Sru 2 1 II
(Stretching block I-7 - Forming force method and Stretching block 1-7 using IJ
I-Mold 1, -Related.
（゛従来の技術及び発明が解決！、、、、 、、）−う
２二する１「ポリエチレンブ゛１５・フクレー・トによ
り代表される飽和ポリエステル樹脂・等からなる一軸延
伸ブｊ７成、形ボトルは、極めて優れた透Ｂ、ｌｌ性及
び表［ｈ１光沢を有し、美肚で、ガスバリヤ−性、水分
不透通性、耐内容物性および保存性等ＩＪ優れ、グいる
。また、ｒ１１′塑剤や安定剤等の添加物にり”いて４
４毒ガス４発生せず、燃焼時の発熱も少なく、炉をいた
ｙ）Ｚ）こともないた６易廃棄性で゛ある等、多（の利
点を有して゛いる。ぞのたｙ〕、各種ｔネ４水、調味＄
々（、酒類その他の食品用のボトル等に広く用いられＣ
いる３、このような状況Ｆで、最近では、５：′、の−
゛−軸延伸ブロー成形によるポリエステル製ボトルに対
して一８０〜９５℃の液体を充填するいわゆるホットフ
ィルや、ポットシャワーによるパステライジングが１−
〕われるようになり、耐熱性に優れた＝７軸延伸ブｔ］
−成形ボトルが求められるようになってきた。ポットフ
ィルでは口部が熱い液体に最初に′さらされ、またホッ
トジャワ・−バステライジングでも、ポットシャワーを
ボトル上方から注ぐのが一般的でｄ）るので、特にボト
ルの口部付近に優れた耐熱性が要求され、口部を結晶化
させることにより耐熱性を賦与する方法や、耐熱性樹脂
層を１」部１コ゛配置１゜た多層ボトルとする方法等が
行われでいる３、一方、ボトルの胴部は、二軸延伸ブ（
、Ｉ−成形におい′ｒ十分に延伸し、またブロー成形直
後にヒ・−トセット（ブロー成形型内にブロー成形体を
密着させて、ブロー成形型の温度で熱処理するご、＝＞
すれば、耐熱性Ｎ脂を使用せずともポットフィルやホッ
トシャワーを施すのに寸分な耐熱性を賦与できる。耐熱
性樹脂は比較的高価であるので、このように胴部に耐熱
性樹脂を配暫しない構造と→゛るのが経済的（，７は好
゛まｌ、い、７従−６てボトルの胴部ＩＪ′あたる部分
を１分に延伸し１、またブロー成形型内壁面に成形体を
密着さ−Ｕることによりヒートセット苓確実に行う必要
があン）。(Resolved by conventional techniques and inventions!) The bottle has extremely excellent permeability, Ill property, and gloss, is beautiful, and has excellent IJ properties such as gas barrier properties, moisture impermeability, content resistance, and storage stability.Also, R11 ``Contains additives such as plasticizers and stabilizers'' 4
It has many advantages, such as it does not generate poisonous gases, generates little heat during combustion, does not damage the furnace, and is easily disposed of. Various tne 4 water, seasoning $
(, widely used for bottles for alcoholic beverages and other foods, etc.)
3. In such a situation F, recently, 5:', -
゛-So-called hot fill, which involves filling a polyester bottle with liquid at -80 to 95°C by axial stretch blow molding, and pastelizing using a pot shower are 1-
] 7-axis stretched butt with excellent heat resistance
- Molded bottles are now in demand. In potfilling, the mouth is exposed to the hot liquid first, and in hot java bathing, it is common to pour the pot shower from above the bottle, so it is especially effective near the mouth of the bottle. Heat resistance is required, and methods such as imparting heat resistance by crystallizing the mouth, or creating a multi-layered bottle with a heat-resistant resin layer arranged in 1" part and 1°, etc. have been carried out3. , the body of the bottle is biaxially stretched (
During I-molding, the material is fully stretched, and immediately after blow molding, heat set (the blow molded product is brought into close contact with the blow mold and heat treated at the temperature of the blow mold).
In this way, heat resistance sufficient for pot filling and hot showers can be imparted without using heat-resistant N fat. Since heat-resistant resin is relatively expensive, it is economical to have a structure in which no heat-resistant resin is disposed in the body. It is necessary to stretch the part corresponding to the body part IJ' for 1 minute, and to ensure that the heat setting is carried out by closely contacting the molded body to the inner wall surface of the blow molding mold.
ところで、最近にな４２．で大型のｌ：、軸延伸ブロー
成形ボトルが飲料用ボトルＪニジて使用されるよ・う１
、−なっこ゛きたが、大型のボトルテ・・は、内容物の
重ｉ！１を支えるため１１５．胴部に凹凸ｇｌ？ｌ吃設
りて機、械的強度苓向上させる必彎があり、胴部におけ
る良好な延伸のみならず、凹凸等の賦形も確実に行う必
要がでできｆ′：。By the way, recently 42. In large L:, axially stretched blow-molded bottles are used as beverage bottles.
, - I'm here, but the large bottle is heavy with contents! 115. to support 1. Is there an uneven gla on the torso? It is necessary to improve the mechanical strength by installing a machine, and it is necessary to ensure not only good stretching in the body but also shaping of irregularities etc.
しかしながら、ブロー成形型キャビティ内壁に設けた内
方凸部によりボトル胴部に凹部を設けようとする従来の
：゛軸延伸ブロー成形法では、胴部の賦形がはっきりし
、ない場合が多い。すなわち、胴部に設けた凹部の角部
がメ７．ろを帯びたりし、で所望の形状が得られない。However, in the conventional axial stretch blow molding method in which a concave portion is formed in the bottle body using an inward convex portion provided on the inner wall of the blow mold cavity, the shape of the body is often not clear. In other words, the corners of the recesses provided in the body are 7. The desired shape may not be obtained.
、賦形が不良となるというこ志は、ブロー成形体とブロ
ー成形型内壁面との密着が一部で損なわれることを意味
１１、ヒートセットが十分とはならない。このように、
所望の凹凸状に賦形ができずビートセットも不完全とな
ると、ボトルの機械的強度のみならず耐熱性を低下させ
ることになる。前述したように、特に大型のボトルにお
いては、胴部の凹凸は内容物の重量やハンドリング時に
かかる外力等に抗しえる強度を出すために必要であり、
胴部への確実な賦形をする必要がある。The problem of poor shaping means that the close contact between the blow-molded article and the inner wall surface of the blow-molding mold is partially impaired11, and the heat setting is not sufficient. in this way,
If the desired uneven shape cannot be formed and the beat setting is incomplete, not only the mechanical strength but also the heat resistance of the bottle will be reduced. As mentioned above, especially in large bottles, unevenness on the body is necessary to provide strength that can withstand the weight of the contents and external forces applied during handling.
It is necessary to reliably shape the torso.
従って本発明の目的は、ボトルのブロー成形において、
ボトル胴部分を所望の形状にしっかりと賦形することに
より大きな機械的強度を付与し、またブロー成形体をキ
ャビテイ面に密着させることによって確実な熱処理を行
い、良好な耐熱性をも付与したボトルを製造することが
できる方法、及びそれを実施することができるブロー成
形型を提供することである。Therefore, the object of the present invention is to
A bottle that has been given great mechanical strength by firmly shaping the bottle body into the desired shape, and has also been given good heat resistance by ensuring reliable heat treatment by bringing the blow-molded body into close contact with the cavity surface. An object of the present invention is to provide a method capable of manufacturing the same, and a blow molding mold capable of carrying out the method.
〔課題を解決するた杓の手段］
上記目的に鑑み鋭意研究の結果、本発明者は、ブロー成
形型のボトル胴部に対応する内壁面部分に、ブロー成形
型キャビティの胴径方向に可動する、ボトル胴部に凹部
を形成するための複数の入れ子型を配置し、入れ子型を
キャビティの外側方向に位置させてブロー成形を行い、
ブロー直後に入れ子型をキャビティの内側方向に突入さ
せれば、胴部に設ける凹部をはっきりと形成することが
でき、またブロー成形体に設けられた凹部分においても
ブロー成形体は型内壁面に密着することができ、もって
ボトル胴部の強度及び耐熱性を向上させることができる
ことを発見し、本発明を完成した。[Means for Solving the Problem] As a result of intensive research in view of the above object, the present inventors have discovered that a blow-molding die is provided with an inner wall surface portion corresponding to the bottle body of the blow-molding die, which is movable in the radial direction of the body of the blow-molding die cavity. , a plurality of nesting molds are arranged to form recesses in the bottle body, and blow molding is performed by positioning the nesting molds toward the outside of the cavity.
If the nested mold is inserted into the inside of the cavity immediately after blowing, the recess provided in the body can be clearly formed, and even in the recessed part provided in the blow molded object, the blow molded object will not touch the inner wall surface of the mold. The present invention was completed based on the discovery that the strength and heat resistance of the bottle body can be improved.
すなわち本発明の二軸延伸ブロー成形方法は、ブロー成
形型キャビティのボトル胴部に対応する内壁面部分に、
前記キャビティの胴径方向に可動であり、かつ前ε己ボ
トル胴部に設けられる凹部と対応する形状の複数の入れ
子型を配置しておき、前記入れ子型を前記キャビティの
外側方向に位置させてブロー成形を行い、プリフォーム
が膨張して前記キャビティ内壁面に接した直後に前記入
れ子型を内側に押し動かすことによって、前記プリフォ
ームから形成されたブロー成形体の胴部に凹部を形成す
ることを特徴とする。That is, in the biaxial stretch blow molding method of the present invention, on the inner wall surface portion of the blow mold cavity corresponding to the bottle body,
A plurality of nested molds are arranged which are movable in the radial direction of the body of the cavity and have shapes corresponding to recesses provided in the front bottle body, and the nested molds are positioned toward the outside of the cavity. Blow molding is performed, and immediately after the preform expands and comes into contact with the inner wall surface of the cavity, the nesting die is pushed inward to form a recess in the body of the blow molded body formed from the preform. It is characterized by
また本発明のブロー成形型は、キャビティ内壁面のボト
ル胴部に対応する部分に、前記キャビティの胴径方向に
可動で、前記ボトル胴部に設けられる凹部と対応する形
状の入れ子型を有し、前記入れ子型は、プリフォームの
ブロー成形前には前記キャビティの外側方向に位置して
おり、前記プリフォームが膨張して前記キャビティの内
壁面に接した直後に、前記入れ子型が前記キャビティの
胴径方向内側に移動することを特徴とする。Further, the blow molding mold of the present invention has a nesting mold movable in the radial direction of the cavity and having a shape corresponding to the recess provided in the bottle body, in a portion of the inner wall surface of the cavity that corresponds to the bottle body. , the nesting mold is located toward the outside of the cavity before the preform is blow-molded, and immediately after the preform expands and comes into contact with the inner wall surface of the cavity, the nesting mold is positioned toward the outside of the cavity. It is characterized by moving inward in the radial direction of the body.
本発明を以下の実施例に基づき、添付図面を参照して詳
細に説明する。The present invention will be explained in detail based on the following examples and with reference to the accompanying drawings.
第１図は本発明の一実施例によるブロー成形型を概略的
に示す断面図である。ブロー成形型は、胴部型１と口部
型２と底部型３とを有する。FIG. 1 is a sectional view schematically showing a blow molding die according to an embodiment of the present invention. The blow molding mold has a body mold 1, a mouth mold 2, and a bottom mold 3.
胴部型ｌは、その内壁面のボトル胴部に対応する部分に
複数の入れ子型４を有する。入れ子型４は、ボトルの胴
部にその軸線にそった凹部を形成する部位であり、ピン
５により胴部型１の内壁面に位置決給されている。また
入れ子型４は、キャビティ６の胴径方向（第１図の矢印
ａの方向）に移動可能となっている。なお第１図は、入
れ子型４がキャビティ６の内側方向に位置している状態
を示している。The body mold 1 has a plurality of nested molds 4 in a portion of its inner wall surface corresponding to the bottle body. The nesting mold 4 is a part that forms a recess along the axis of the bottle body, and is positioned on the inner wall surface of the body mold 1 by a pin 5. Moreover, the nesting die 4 is movable in the radial direction of the cavity 6 (in the direction of arrow a in FIG. 1). Note that FIG. 1 shows a state in which the nesting die 4 is located toward the inside of the cavity 6.
胴部型１で、入れ子型４が設置された部分（キャビティ
からみて入れ子型４の裏側の部分）には、キャビティに
エアを吹き入れるための細管７ａが形成されている。こ
れは、いわゆるエアイジェクトを行うための細管であり
、ブロー成形体（ボトル）の離型時にエアを吹き込むこ
とにより、ボトル胴部に設けた凹部分が反転したり変形
したすせずに、容易にボトルを離型することができるよ
うになる。A thin tube 7a for blowing air into the cavity is formed in the part of the body mold 1 where the nesting mold 4 is installed (the part on the back side of the nesting mold 4 when viewed from the cavity). This is a thin tube for performing so-called air ejection, and by blowing air into it when the blow-molded product (bottle) is released from the mold, the concave part provided in the bottle body can be easily prevented from inverting or deforming. The bottle can now be released from the mold.
胴部型３にも、上述した胴部型１の入れ子型設置部分に
設けたと同様な、エアイジェクト用の細管７ｂが形成さ
れている。The body mold 3 is also formed with a thin tube 7b for air ejection similar to that provided in the nested mold installation portion of the body mold 1 described above.
第２図は第１図のＡ−Ａ断面図である。図かられかるよ
うに、本実施例では６つの入れ子型４が胴部型１の内壁
面に等間隔に配置している。第２図における各入れ子型
４は、キャビティ６の胴径方向の一番外側まで移薊し５
た位ｉ！！ｉ′ｉｌ“々、してあり、この状態がブ【］
・−成形直前の位置となン）、１なお第２図には、ブｌ
ｌｌ］−成形後に各入れ吊型４−ｔｌ１４′、＋・ビテ
ィ胴径方向内側に゛押し１、入れ、ブ［７−成形体をＦ
−トセットする時の入れ吊型４の位置を破線ζ５示して
゛あン）。FIG. 2 is a sectional view taken along the line AA in FIG. 1. As can be seen from the figure, in this embodiment, six nested molds 4 are arranged at equal intervals on the inner wall surface of the body mold 1. Each nested mold 4 in FIG.
Tai i! ! i'il", and this state is bu []
・-The position immediately before molding), 1. Figure 2 also shows the position of the blank.
ll] - After molding, each hanging mold 4 - tl14', + - Press 1 inward in the radial direction of the bitty body, and press [7 - F]
- The position of the hanging mold 4 when setting is shown by the broken line ζ5.
第２図かられかるよ・うに、各入れ丁型４ ｉ１ｍ接Ｎ
る部分がボトルの胴部１、゛おげイ）凹部ｌなり、各入
れ吊型４の間が凸部となる。As shown in Figure 2, each case type 4 i1m contact N
The part where the bottle is placed is the body 1 of the bottle, and the concave part 1 is the concave part 1, and the part between the hanging molds 4 is the convex part.
ボトル胴部の凸部１、対応″′４４）部分（入れ丁型４
の間に位置する型内壁面）には複数の小孔８ａが設けら
れでいる。これは胴部型１の１１“コック内に設けた管
部８に連続し、でおり、さらにそれはブロー成形型外部
に設けた真空ポンプ（図示ゼず）に接続している。Convex part 1 on the bottle body, corresponding ''44) part (cutter type 4)
A plurality of small holes 8a are provided in the mold inner wall surface located between the molds. This is continuous with a tube section 8 provided in the 11" cock of the body mold 1, and is further connected to a vacuum pump (not shown) provided outside the blow molding mold.
次に上述のブロー成形型を用いてボトルを製造する方法
を説明する。Next, a method of manufacturing a bottle using the above-mentioned blow molding mold will be explained.
まず口部型２）；−よりシリアｆ・−ムの口部を把持し
、ブｌ、？−成形型内に設“置する（第１図及び第：２
図にはプリフォームを図示せず）。、−のとき入れゴ′
型４は第２図の実線で不慣ようにキャビう−イ６の胴（
イ方向外側に位置１させごおく□。First, grasp the mouth part of Syria f・-m from the mouth part type 2); - Place it in the mold (Figure 1 and Figure 2)
(Preform not shown in figure). , - when inserting Go'
Mold 4 is indicated by the solid line in Figure 2, which is similar to the body of Cavi-i 6 (
Place it in position 1 on the outside in the A direction □.
次ｌ、゛、辿常の方法で二軸延伸ツｏ−成＋ｆＢをｆ■
’）が、同時に胴部型ｊ内の管ｍく８４通しｒ ；ｌ
＋ビティ０内の空気を吸引−４“る３、キャビアイｆｊ
内のシリア」８−・ｌ、の外側の部分の吸引により、入
れｒ型４を含むキ￥・ビガ゛イ内望面とブ”Ｊ ５７．
ｔ −−４，、との間に空気が残留−４４′）こ、−５
はなく、膨張し、たプ■ｌ ”、’、’７．１！、は主
ヤじナイ内壁面に密着４る。Next, add the biaxial stretching +fB to f■ using the usual method.
), but at the same time 84 passages r ; l of the tube m in the body mold j
+ Aspirate the air inside Bitty 0 - 4"ru 3, Caviai fj
By suctioning the outer part of the inner cylinder 8-l, the inner view surface of the key including the r-type 4 and the bulge 57.
Air remains between t -4,, -44') and -5
Instead, it expands and the tap ``,','7.1!'' comes into close contact with the inner wall surface of the main neck.
なヨ）゛本実絶倒では、第２図に示すよ・）１．”９、
人才１子型の間の部分で胴部型１の２つ０）部分型１ａ
と１１〕との接面部となる部分には、キャビティ６内の
吸引用小孔を設げていないが、吸引の力を適度に犬き−
く１、でお（ｊば、イーの１８分に吸引用小７１がなく
ｒ４）空気が残、留−中るご：と戸、； ＜、ブロー成
疋２体峨内螢１ｆ１に密着さ七るユとがて工きる。(Nayo) ゛The truth is shown in Figure 2.) 1. "9,
The part between human body type 1 and child type 2 of torso type 1 0) Partial type 1a
Although a small hole for suction inside the cavity 6 is not provided in the part that becomes the contact surface between
Ku 1, Deo (j, there is no suction small 71 in the 18th minute of E, r4), air remains, Tomu - Nakurugo: Toto,; Seven Ruyu and Gatete finish.
入れ、吊型４を含むキャビティ内壁面にブリ、７オーム
が密着する際に、第３図に模式的に示゛ＪようＩＪ′、
入れ子型４ノ胴部型の内壁面６ａとの境界部分１２１：
よりブロー成形型１０に屈曲部１４が形成されるように
キ寺ビｉイ内壁面を形成してお”くのがよい、。When the 7-ohm wire is brought into close contact with the inner wall surface of the cavity containing the hanging mold 4, IJ' as schematically shown in FIG.
Boundary portion 121 with inner wall surface 6a of nested type 4 body type:
It is preferable to form the inner wall surface so that the bent part 14 is formed in the blow mold 10.
このようにブロー成形体１０に屈曲部１４が形成される
と、続いて行われる凹部形成峙に凹部の角部がはっきり
とて；ｌりようにブよる。When the bent portion 14 is formed in the blow-molded body 10 in this way, the corner of the recess becomes clearly visible when the recess is formed subsequently.
プリフォームがキャビティ６内で膨張してヤトビティ内
壁面及び入れ吊型４の表面に密着しまた直後に、入れ吊
型４をキャビティ１杯方向内側（第３図の矢印方向）に
押１．７入れる。・−れＩこよ。って、ブロー成形体（
ボトル）の胴部に凹部がル２成される。このときブロー
成形体は、入れ吊型４の表面を含むキャビナイ内壁面に
ぴったりと密着することになる。従って、得られるボト
ルは再現性よく所望の凹凸形状に賦形されることになり
、機械的強度に優れた腰部となる。またヒートセラ１も
胴部全面で確実に行うことができるので、耐熱性にも良
好となる。The preform expands in the cavity 6 and comes into close contact with the inner wall surface of the cavity and the surface of the hanging mold 4, and immediately after that, the hanging mold 4 is pushed one full cavity inward (in the direction of the arrow in FIG. 3). put in.・-Let's go. So, the blow molded body (
A recess is formed in the body of the bottle. At this time, the blow-molded body comes into close contact with the inner wall surface of the cabinet, including the surface of the hanging mold 4. Therefore, the resulting bottle can be shaped into a desired uneven shape with good reproducibility, resulting in a waist portion with excellent mechanical strength. Furthermore, heat curing can be performed reliably over the entire surface of the body, resulting in good heat resistance.
十分なヒートセラ）・の後に、得られたブリー成形体（
ボトル）を離型するが、このとき、第１図に示した細管
７ａ及び７ｂからエアを吹き込みながらこれを行・）。After sufficient heat curing), the obtained Brie molded body (
The bottle is released from the mold, and this is done while blowing air through the thin tubes 7a and 7b shown in FIG.
特に、胴部又は底部に設・けた四部が深い場合には、こ
のエアの吹き込みを伴った離型（工アイジＪクト）を行
うのがよいｏ 、！−１＋）うのは、形成１．た凹部が
深い場合には、ブロー成形型を離型引４）のが難シ、＜
、離型鵬に開部分が反転ｌ１、て凸部とな−っｔ−リ、
破損し、たりするζ、とがあるからで洸〕る。In particular, if the four parts provided on the body or bottom are deep, it is best to release the mold with air blowing. -1+) Unoha is formation 1. If the recess is deep, it may be difficult to release the blow mold 4).
, the opening part is reversed in the mold release hole, and it becomes a convex part.
This is because there is a possibility of damage or damage.
以ト、本発明を実施例）、基づき、図面を参照し２て゛
説明し５だが、本発明はこれに限定される、乙となく、
本発明の思想症逸脱し、ていない限り種々の変更を流計
、〕、とができる、例文ばブロー成形型は口部型、胴部
型、庇部型の３″つで３５６必要はなく、１４部型を加
えた４つの型で構成する等の変更４施４ことができる。Hereinafter, the present invention will be described based on Examples) and with reference to the drawings, but the present invention is not limited thereto.
Unless it deviates from the concept of the present invention, various modifications can be made.For example, the blow molding mold is 3", which is a mouth mold, a body mold, and an eaves mold.356 is not necessary. , 4 changes can be made, such as configuring it with 4 molds including a 14-part mold.
また入れ吊型の数及び形状等も種々変更Ｑきる。Also, the number and shape of the hanging molds can be changed in various ways.
な４５、以、Ｌの実施例においでは、７ブロー成形型内
にニーｒを吹き出す空隙部又は吸引のだと）の空隙部と
り、＋で小孔を形成し７た型を用いで説明したが、本発
明はこれに限定されるこ−となく、空隙部とし。45. Hereinafter, in the example of L, the void part (the gap part or suction part) where the knee r is blown out in the blow molding mold is taken, and a small hole is formed with +. However, the present invention is not limited to this, and the present invention is not limited to this.
て、スリット状の開［」部等種々の形状の開口部きし２
てよい。The opening slit 2 has various shapes such as a slit-like opening.
It's fine.
本発明によれば、ボトル胴部への獣形性が向上し、また
充分なヒートセットを行うことができるので、ボトル本
体の機械的強度が向上するとともに耐熱性も良くなる。According to the present invention, the shapeability of the bottle body is improved and sufficient heat setting can be performed, so that the mechanical strength of the bottle body is improved and the heat resistance is also improved.
また胴部に設ける凹部もきちっとした角部を有するよう
に再現性良く形成されるので、外観上も好ましい。Furthermore, the recesses provided in the body are formed with good reproducibility so as to have sharp corners, which is also favorable in terms of appearance.
本発明の方法及び装置は、特に、ボトル胴部分に段差の
大きな凹凸形状を設ける場合□に有効となる。The method and apparatus of the present invention are particularly effective when the bottle body portion has an uneven shape with large steps.
第１図は本発明の一実施例によるブロー成形型を概略的
に示す断面図であり、
第２図は第１図のＡ−Ａ断面図であり、第３図は本発明
のブロー成形型内壁面の入れ子型設置部分を示す部分拡
大断面図である。
１・・・胴部型
２・・・口部型
３・・・底部型
４・・・入れ吊型
６ ・
７ａ、
８ ・
８ａ・
１０・
１４・
キャビティ
・エア吹き込み用細管
吸引管部
小孔
ブロー成形体
屈曲部FIG. 1 is a cross-sectional view schematically showing a blow molding mold according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 3 is a blow molding mold of the present invention. FIG. 3 is a partially enlarged sectional view showing a nested installation portion on an inner wall surface. 1...Body mold 2...Mouth mold 3...Bottom mold 4...Hanging mold 6, 7a, 8, 8a, 10, 14. Cavity/Small hole in the suction tube for air blowing Blow molded body bent part
Claims (8)
において、ブロー成形型キャビティのボトル胴部に対応
する内壁面部分に、前記キャビティの胴径方向に可動で
あり、かつ前記ボトル胴部に設けられる凹部と対応する
形状の複数の入れ子型を配置しておき、前記入れ子型を
前記キャビティの胴径方向外側に位置させてブロー成形
を行い、プリフォームが膨張して前記キャビティ内壁面
に接した直後に前記入れ子型を内側に押し動かすことに
よって、前記プリフォームから形成されたブロー成形体
の胴部に凹部を形成することを特徴とするボトルの二軸
延伸ブロー成形方法。(1) In a method for manufacturing a bottle by biaxial stretch blow molding, the inner wall surface portion of the blow mold cavity corresponding to the bottle body is movable in the radial direction of the cavity and is provided on the bottle body. A plurality of nested molds having shapes corresponding to the recessed portions are arranged, and blow molding is performed by positioning the nested molds on the outside of the cavity in the radial direction of the body, so that the preform expands and comes into contact with the inner wall surface of the cavity. A method for biaxial stretch blow molding of a bottle, characterized in that immediately after, by pushing the nest mold inward, a recess is formed in the body of the blow molded object formed from the preform.
配置したキャビティ内壁面に開口する空隙部からエアを
吹き出しながら、前記ブロー成形体を離型することを特
徴とするボトルの二軸延伸ブロー成形方法。(2) The method according to claim 1, wherein the blow-molded body is released from the mold while blowing air from a gap opening on the inner wall surface of a cavity in which the nested mold is arranged. Blow molding method.
ー成形型の底部型に設けた空隙部からエアを吹き出しな
がら、前記ブロー成形体を離型することを特徴とするボ
トルの二軸延伸ブロー成形方法。(3) The method according to claim 1 or 2, wherein the blow-molded body is released from the mold while blowing air from a gap provided in the bottom mold of the blow-molding die. Blow molding method.
、前記プリフォームの膨張に同調して、前記キャビティ
内のプリフォーム外部となる部分の空気を吸引すること
を特徴とするボトルの二軸延伸ブロー成形方法。(4) The method according to any one of claims 1 to 3, characterized in that air in a portion of the cavity outside the preform is sucked in synchronization with the expansion of the preform. Axial stretch blow molding method.
ティ内壁面のボトル胴部に対応する部分に、前記キャビ
ティの胴径方向に可動で、前記ボトル胴部に設けられる
凹部と対応する形状の入れ子型を有し、前記入れ子型は
、プリフォームのブロー成形前には前記キャビティの胴
径方向外側に位置しており、前記プリフォームが膨張し
て前記キャビティの内壁面に接した直後に、前記入れ子
型が前記キャビティの胴径方向内側に移動することを特
徴とするボトルの二軸延伸ブロー成形型。(5) In a biaxial stretch blow molding mold for a bottle, a nest movable in the radial direction of the cavity and having a shape corresponding to a recess provided in the bottle body is placed in a portion of the inner wall surface of the cavity corresponding to the bottle body. The nested mold is located outside the cavity in the radial direction of the cavity before blow molding the preform, and immediately after the preform expands and comes into contact with the inner wall surface of the cavity, the nested mold A biaxial stretch blow molding mold for a bottle, characterized in that a nesting mold moves inward in the radial direction of the cavity.
れ子型を配置したキャビティ内壁面部分に、前記キャビ
ティ内にエアを吹き入れる空隙部が形成されていること
を特徴とするボトルの二軸延伸ブロー成形型。(6) The blow molding mold according to claim 5, wherein a cavity for blowing air into the cavity is formed in an inner wall surface portion of the cavity in which the nesting mold is arranged. Stretch blow mold.
前記ブロー成形型の底部には、前記キャビティ内にエア
を吹き入れる空隙部が形成されていることを特徴とする
ボトルの二軸延伸ブロー成形型。(7) In the blow molding mold according to claim 5 or 6,
A biaxial stretch blow molding mold for a bottle, characterized in that a gap portion for blowing air into the cavity is formed at the bottom of the blow molding mold.
において、前記キャビティのボトル胴部に対応する部分
に複数の空隙部が設けられており、ブロー成形時のプリ
フォームの膨張に同調して、前記空隙部より前記キャビ
ティ内のプリフォーム外部となる部分の空気を吸引する
ことを特徴とする二軸延伸ブロー成形型。(8) In the blow molding mold according to any one of claims 5 to 7, a plurality of voids are provided in a portion of the cavity corresponding to the bottle body, and the cavity is synchronous with expansion of the preform during blow molding. A biaxial stretch blow molding mold characterized in that air from a portion of the preform outside of the cavity is sucked from the gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2256217A JPH04131220A (en) | 1990-09-25 | 1990-09-25 | Blow molding method and blow mold of bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2256217A JPH04131220A (en) | 1990-09-25 | 1990-09-25 | Blow molding method and blow mold of bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04131220A true JPH04131220A (en) | 1992-05-01 |
Family
ID=17289561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2256217A Pending JPH04131220A (en) | 1990-09-25 | 1990-09-25 | Blow molding method and blow mold of bottle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04131220A (en) |
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| JP2005096452A (en) * | 2003-09-09 | 2005-04-14 | Becton Dickinson & Co | Use of air assist to eject roller bottle with deep punt |
| WO2007016959A1 (en) * | 2005-07-28 | 2007-02-15 | Sidel Participations | Mold for a container blow molding machine, comprising a grooved mold bottom |
| JP2008536717A (en) * | 2005-04-15 | 2008-09-11 | グレイアム パッケイジング カンパニー リミテッド パートナーシップ | System and method for producing blow molded containers with optimal plastic distribution |
| JP2010533080A (en) * | 2007-07-13 | 2010-10-21 | モールコル テクノロジア エス．エル． | Apparatus and method for the production of molecular biaxially oriented plastic pipes |
| WO2012057090A1 (en) * | 2010-10-25 | 2012-05-03 | 日精エー・エス・ビー機械株式会社 | Production method for hollow container |
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1990
- 1990-09-25 JP JP2256217A patent/JPH04131220A/en active Pending
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|---|---|---|---|---|
| JP2005096452A (en) * | 2003-09-09 | 2005-04-14 | Becton Dickinson & Co | Use of air assist to eject roller bottle with deep punt |
| JP2008536717A (en) * | 2005-04-15 | 2008-09-11 | グレイアム パッケイジング カンパニー リミテッド パートナーシップ | System and method for producing blow molded containers with optimal plastic distribution |
| WO2007016959A1 (en) * | 2005-07-28 | 2007-02-15 | Sidel Participations | Mold for a container blow molding machine, comprising a grooved mold bottom |
| US7811079B2 (en) | 2005-07-28 | 2010-10-12 | Sidel Participations | Mold for a container blow molding machine, comprising a grooved mold bottom |
| JP2010533080A (en) * | 2007-07-13 | 2010-10-21 | モールコル テクノロジア エス．エル． | Apparatus and method for the production of molecular biaxially oriented plastic pipes |
| WO2012057090A1 (en) * | 2010-10-25 | 2012-05-03 | 日精エー・エス・ビー機械株式会社 | Production method for hollow container |
| JP5783180B2 (en) * | 2010-10-25 | 2015-09-24 | 日精エー・エス・ビー機械株式会社 | Manufacturing method of hollow container |
| JP2014005068A (en) * | 2012-06-26 | 2014-01-16 | Honda Plus Kk | Plastic bottle and manufacturing method of the same |
| JP2014005069A (en) * | 2012-06-27 | 2014-01-16 | Honda Plus Kk | Plastic bottle and manufacturing method for the same |
| EP3348374A1 (en) * | 2014-03-03 | 2018-07-18 | Amcor Group GmbH | Machine component facilitating mold base movement |
| EP3348374B1 (en) | 2014-03-03 | 2020-08-26 | Amcor Rigid Plastics USA, LLC | Machine component facilitating mold base movement |
| US10232545B2 (en) | 2014-03-03 | 2019-03-19 | Amcor Rigid Plastics Usa, Llc | Machine component facilitating mold base movement |
| CN104228047A (en) * | 2014-08-29 | 2014-12-24 | 张家港市天江精密模具制造有限公司 | Device and method for processing large-diameter plastic bottle |
| JP2017177743A (en) * | 2016-03-31 | 2017-10-05 | 株式会社吉野工業所 | Container manufacturing method with liquid blow molding |
| EP3437829A4 (en) * | 2016-03-31 | 2019-10-23 | Yoshino Kogyosho Co., Ltd. | Method for producing container by liquid blow molding |
| WO2017168995A1 (en) * | 2016-03-31 | 2017-10-05 | 株式会社吉野工業所 | Method for producing container by liquid blow molding |
| US10974438B2 (en) | 2016-03-31 | 2021-04-13 | Yoshino Kogyosho Co., Ltd. | Container production method by liquid blow molding |
| WO2018030101A1 (en) * | 2016-08-09 | 2018-02-15 | 東洋製罐株式会社 | Method for producing synthetic resin container |
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