JPH0324331B2 - - Google Patents
Info
- Publication number
- JPH0324331B2 JPH0324331B2 JP7589883A JP7589883A JPH0324331B2 JP H0324331 B2 JPH0324331 B2 JP H0324331B2 JP 7589883 A JP7589883 A JP 7589883A JP 7589883 A JP7589883 A JP 7589883A JP H0324331 B2 JPH0324331 B2 JP H0324331B2
- Authority
- JP
- Japan
- Prior art keywords
- spout
- preform
- bottle
- heating
- mandrel
- 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
- 238000000034 method Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 11
- 229920001225 polyester resin Polymers 0.000 claims description 6
- 239000004645 polyester resin Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000000071 blow moulding Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000012733 comparative method Methods 0.000 description 2
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate 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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/0063—After-treatment of articles without altering their shape; Apparatus therefor for changing crystallisation
-
- 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
- B29C49/64—Heating or cooling preforms, parisons or blown articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は、ポリエステル樹脂製のプリフオーム
の口栓部またはボトルの口栓部を加熱して結晶化
させる方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of heating and crystallizing a spout of a polyester resin preform or a bottle.
ポリエステル樹脂製ボトルの口栓部に耐熱性を
付与するために、プリフオームまたはボトルの段
階で、口栓部を加熱することにより結晶化させる
ことが行なわれている。この加熱結晶化処理を能
率的に行うには、第４図に断面図で示すように、
口栓部Ａの内径よりわずかに小径のマンドレルＢ
にプリフオームの口栓部Ａを倒立状態に差し込ん
で支持し、ヒーターＣにより加熱する方法がよ
い。ところがこのような方法では、プリフオーム
のセツトや取外しが容易である反面、口栓部Ａが
加熱により結晶化に至る過程で、変形し易い軟化
状態を通過する時に、倒立状態のために自重や自
転による応力が支持部である口栓部Ａにかかつて
変形を生ずる難点がある。 In order to impart heat resistance to the spout of a polyester resin bottle, the spout is crystallized by heating at the preform or bottle stage. In order to perform this heating crystallization process efficiently, as shown in the cross-sectional view in Figure 4,
Mandrel B with a slightly smaller diameter than the inner diameter of the plug part A
A good method is to insert the plug part A of the preform in an inverted position and support it, and then heat it with a heater C. However, with this method, although it is easy to set and remove the preform, when the spout A passes through a softened state where it is easily deformed in the process of crystallization due to heating, the preform loses its own weight and rotation due to the inverted state. There is a problem in that the stress caused by this causes deformation of the spout part A, which is the supporting part.
本発明は、口栓部を変形が生じないように加熱
して結晶化するための方法を提供せんとするもの
であり、以下、添付図面を参照しながら詳細に説
明する。 The present invention aims to provide a method for heating and crystallizing a spout without causing deformation, and will be described in detail below with reference to the accompanying drawings.
第１図は本発明のボトル口栓部の結晶化方法を
実施するための装置の一例を示す断面図、第２図
第３図は同じく他の例を示す断面図であり、第４
図は本発明方法以外の比較方法を示す断面図であ
る。 FIG. 1 is a cross-sectional view showing an example of an apparatus for carrying out the method of crystallizing a bottle cap part of the present invention, FIG. 2, FIG. 3 are cross-sectional views showing another example, and FIG.
The figure is a sectional view showing a comparative method other than the method of the present invention.
本発明は第１図〜第３図に示すようにポリエス
テル樹脂製のプリフオーム１１またはこのような
プリフオームをブロー成形したボトル１２を内径
規制用マンドレル４上にセツトして倒立状態に保
つとともに、その口栓部２以外の部分３で支持し
てプリフオーム１１またはボトル１２の自重が口
栓部にかからないようにしながら、口栓部２を加
熱して結晶化させることを特徴とするボトル口栓
部の結晶化方法である。 As shown in FIGS. 1 to 3, a preform 11 made of polyester resin or a bottle 12 made by blow molding such a preform is set on an inner diameter regulating mandrel 4, kept in an inverted state, and its mouth is Crystallization of a bottle spout part characterized in that the spout part 2 is heated and crystallized while being supported by a part 3 other than the plug part 2 so that the weight of the preform 11 or the bottle 12 is not applied to the spout part. It is a method of conversion.
本発明におけるポリエステル樹脂製のプリフオ
ーム１１またはこのようなプリフオームをブロー
成形してなるボトル１２は、ポリエチレンテレフ
タレートあるいはエチレンテレフタレートを主た
る繰り返し単位とする共重合体を射出成形等によ
り管状に成形したプリフオーム、またはこのプリ
フオームをポリエステル樹脂の軟化温度以上溶融
温度以下で二軸延伸ブロー成形したボトルが好適
に用いられる。このボトルはあらかじめ口栓部以
外を熱固定してあつてもよい。 The preform 11 made of polyester resin in the present invention or the bottle 12 formed by blow molding such a preform is a preform formed into a tubular shape by injection molding or the like of polyethylene terephthalate or a copolymer having ethylene terephthalate as a main repeating unit, or A bottle obtained by biaxially stretching and blow-molding this preform at a temperature above the softening temperature and below the melting temperature of the polyester resin is preferably used. This bottle may be heat-fixed in advance except for the spout.
プリフオーム１１またはボトル１２を倒立状態
に保つためには図に示すように、口栓部２内径よ
りわずかに小径の内径規制用マンドレル４に口栓
部２を差し込むことにより行なうことができる。
このマンドレル４は、口栓部２か加熱された時に
変形しないように口栓部２の内径を規制するもの
である。 In order to maintain the preform 11 or the bottle 12 in an inverted state, the spout 2 can be maintained by inserting the spout 2 into an inner diameter regulating mandrel 4 having a slightly smaller diameter than the inner diameter of the spout 2, as shown in the figure.
This mandrel 4 regulates the inner diameter of the spout 2 so that the spout 2 does not deform when heated.
口栓部２以外の部分３でプリフオーム１１又は
ボトル１２を支持するためには、外面からチヤツ
ク等で挟持することもできるが、操作上は内面か
ら支持するのが有利であり、例えば第１図、第３
図に示すようにマンドレル４から上方に充分な長
さのロツド４１を延設し、その先端がプリフオー
ム１１またはボトル１２の内底面に当接してその
自重をすべて支持するようにする、あるいは第２
図に示すように、プリフオーム１１の口栓部２よ
りも上方内面にテーパ部分１３を設けておきマン
ドレル４の上部４２がこのテーパ部分１３に当接
してプリフオーム１１の自重をすべて受けとめる
ようにしてもよい。このように、マンドレル４
と、支持部４１，４２とを一体として、プリフオ
ーム１１またはボトル１２の内面から支持するよ
うにすると、プリフオーム等の取付け、取外しが
極めて容易となり、特に内底面で支持すると、プ
リフオーム等を自転させながら加熱する場合に、
内底面が回転の支点となるため、パリソン等の揺
れがなく安定した回転が得られる。 In order to support the preform 11 or bottle 12 at the portion 3 other than the spout 2, it is possible to clamp it from the outside with a chuck or the like, but it is advantageous for operation to support it from the inside; for example, as shown in FIG. , 3rd
As shown in the figure, a rod 41 of sufficient length is extended upward from the mandrel 4 so that its tip abuts the inner bottom surface of the preform 11 or the bottle 12 to support all of its own weight, or
As shown in the figure, a tapered part 13 is provided on the inner surface above the spout part 2 of the preform 11 so that the upper part 42 of the mandrel 4 comes into contact with this tapered part 13 and receives all the weight of the preform 11. good. In this way, mandrel 4
If the support parts 41 and 42 are integrated and supported from the inner surface of the preform 11 or bottle 12, it becomes extremely easy to attach and remove the preform, etc., and especially if it is supported on the inner bottom surface, the preform etc. can be supported while rotating on its axis. When heating,
Since the inner bottom surface serves as the fulcrum of rotation, stable rotation is achieved without shaking of the parison, etc.
口栓部２を加熱するためには、口栓部２の周囲
に配した赤外線ヒーター５などにより加熱すれば
良い。その条件は、たとえば口栓部２が140℃〜
180℃になるように１〜８分間加熱すればよい。
加熱を均一に行なうためには、マンドレル４およ
び支持部４１，４２を回転させて口栓部２を自転
させるのが好適である。なお、６は口栓部２以外
が加熱されないようにするための遮熱板である。 In order to heat the spout portion 2, heating may be performed using an infrared heater 5 or the like arranged around the spout portion 2. For example, the condition is that the spout part 2 is 140℃~
Just heat it to 180℃ for 1 to 8 minutes.
In order to perform heating uniformly, it is preferable to rotate the mandrel 4 and the supports 41, 42 to rotate the spout 2. Note that 6 is a heat shield plate for preventing parts other than the spout part 2 from being heated.
以上説明したように本発明のボトル口栓部の結
晶化方法は、倒立状態のプリフオーム１１または
ボトル１２を口栓部以外の部分で支持しながら口
栓部を加熱するようにしたから、加熱中に口栓部
に自重がかかつたり、自転によりバランスをくず
して無理な応力がかかつたりせず、変形なく結晶
化させることができる。 As explained above, in the method for crystallizing a bottle cap according to the present invention, the cap is heated while supporting the inverted preform 11 or bottle 12 with a portion other than the cap. It is possible to crystallize without deformation, without putting its own weight on the spout or unbalanced by rotation and applying unreasonable stress.
第１図は、本発明のボトル口栓部の結晶化方法
の実施状態の一例を示す断面図、第２図、第３図
は同じく他の例を示す断面図であり第４図は比較
方法を示す断面図である。
１１……プリフオーム、１２……ボトル、２…
…口栓部、３……口栓部以外の部分、４……内径
規制用マンドレル、４１，４２……支持部。
FIG. 1 is a cross-sectional view showing an example of the implementation state of the method for crystallizing a bottle cap according to the present invention, FIGS. 2 and 3 are cross-sectional views showing other examples, and FIG. 4 is a comparative method. FIG. 11...preform, 12...bottle, 2...
...Spout part, 3... Portion other than the spout part, 4... Mandrel for regulating inner diameter, 41, 42... Support part.
Claims (1)
プリフオームの口栓部を加熱して結晶化させる方
法において、倒立状態のボトルまたはプリフオー
ムの口栓部内に内径規制用マンドレルを挿入する
とともに、そのボトルまたはプリフオームを口栓
部以外の部分で支持しながら口栓部を加熱するこ
とを特徴とするボトル口栓部の加熱結晶化方法。1. In a method of heating and crystallizing the spout of a bottle or preform made of polyester resin, an inner diameter regulating mandrel is inserted into the spout of an inverted bottle or preform, and the bottle or preform is spouted. A method for heating and crystallizing a bottle cap, which comprises heating the cap while supporting it with a portion other than the cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7589883A JPS59201824A (en) | 1983-04-28 | 1983-04-28 | Crystallization of bottle mouth stopper part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7589883A JPS59201824A (en) | 1983-04-28 | 1983-04-28 | Crystallization of bottle mouth stopper part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59201824A JPS59201824A (en) | 1984-11-15 |
| JPH0324331B2 true JPH0324331B2 (en) | 1991-04-03 |
Family
ID=13589601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7589883A Granted JPS59201824A (en) | 1983-04-28 | 1983-04-28 | Crystallization of bottle mouth stopper part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59201824A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102238608B1 (en) * | 2019-12-18 | 2021-04-09 | 토요잉크Sc홀딩스주식회사 | Electromagnetic wave shielding sheet and electromagnetic wave shielding wiring circuit board |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63176129A (en) * | 1987-01-16 | 1988-07-20 | Toyo Seikan Kaisha Ltd | Manufacture of saturated polyester bottle |
| CN1202976C (en) * | 2001-01-22 | 2005-05-25 | 珠海保税区中富聚酯啤酒瓶有限公司 | Method for manufacturing crystal type bottle mouth structure of polyester beer bottle |
| US7033656B2 (en) | 2002-04-12 | 2006-04-25 | Graham Packaging Pet Technologies, Inc. | Graded crystallization of container finishes |
| JP4478977B2 (en) * | 2004-05-31 | 2010-06-09 | 株式会社吉野工業所 | Thermal crystallization treatment method for preform mouthpiece |
| JP4561519B2 (en) * | 2004-07-27 | 2010-10-13 | 東洋製罐株式会社 | Heat treatment method for flange part, heat treatment apparatus for flange part, and method for producing resin container with flange |
-
1983
- 1983-04-28 JP JP7589883A patent/JPS59201824A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102238608B1 (en) * | 2019-12-18 | 2021-04-09 | 토요잉크Sc홀딩스주식회사 | Electromagnetic wave shielding sheet and electromagnetic wave shielding wiring circuit board |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59201824A (en) | 1984-11-15 |
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