JPH04151227A - Manufacturing device for heat-resistant crystallized polyester resin vessel - Google Patents
Manufacturing device for heat-resistant crystallized polyester resin vesselInfo
- Publication number
- JPH04151227A JPH04151227A JP2277186A JP27718690A JPH04151227A JP H04151227 A JPH04151227 A JP H04151227A JP 2277186 A JP2277186 A JP 2277186A JP 27718690 A JP27718690 A JP 27718690A JP H04151227 A JPH04151227 A JP H04151227A
- Authority
- JP
- Japan
- Prior art keywords
- preform
- female mold
- mold
- pet
- polyester resin
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 229920001225 polyester resin Polymers 0.000 title claims description 6
- 239000004645 polyester resin Substances 0.000 title claims description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000002425 crystallisation Methods 0.000 claims abstract description 10
- 230000008025 crystallization Effects 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 238000001746 injection moulding Methods 0.000 claims abstract description 7
- 239000002667 nucleating agent Substances 0.000 claims abstract description 5
- 238000007666 vacuum forming Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 238000000465 moulding Methods 0.000 abstract description 5
- 230000009477 glass transition Effects 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 abstract description 2
- 238000003856 thermoforming Methods 0.000 abstract description 2
- -1 For example Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920006230 thermoplastic polyester resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
- B29C49/061—Injection blow-moulding with parison holding means displaceable between injection and blow stations
-
- 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
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
-
- 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
- B29C49/78—Measuring, controlling or regulating
- B29C49/786—Temperature
- B29C2049/7864—Temperature of the mould
- B29C2049/78645—Temperature of the mould characterised by temperature values or ranges
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/006—Using vacuum
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/007—Using fluid under pressure
-
- 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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
-
- 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
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- 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
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/12—Stretching rods
-
- 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
- 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）
本発明は、熱可塑性ポリエステル樹脂（以下、ＰＥＴと
いう）から−殿方式で耐熱性の各種容器を製造する装置
に関するものである。即ち、射出直ちに圧空または真空
成形装置に移動させて、雌型金型に設けた樹脂の結晶化
度をコントロールする加熱手段により加熱成形し、次い
で冷却固化して耐熱性ＰＥＴ容器を製造する（１段方式
）一連の製造装置を内容とする。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an apparatus for manufacturing various heat-resistant containers from thermoplastic polyester resin (hereinafter referred to as PET) using a thermoplastic method. That is, immediately after injection, the resin is transferred to a compressed air or vacuum forming apparatus, heated and molded using a heating means for controlling the crystallinity of the resin provided in a female mold, and then cooled and solidified to produce a heat-resistant PET container (1 Step method) The contents include a series of manufacturing equipment.
（従来の技術と課題）
近年に到り、結晶化容易なＰＥＴを原料とし射出成形よ
りプリフォームを製造し、それを保管しておき、必要に
応じ取出し、再加熱して樹脂のガラス転移温度以上にし
て加熱成形した後、ＰＥＴを結晶させる温度まで昇温し
で耐熱性容器を製造する２段方式の製法が提案された。(Conventional technology and issues) In recent years, preforms have been manufactured by injection molding using PET, which is easily crystallized, as a raw material, stored, taken out as needed, and reheated to reach the glass transition temperature of the resin. A two-stage manufacturing method has been proposed in which a heat-resistant container is manufactured by heating the container to a temperature that crystallizes the PET after heating and forming the container as described above.
しかしながら、２段方式（コールドプリフォーム方式）
には、次の課題か残されている。However, the two-stage method (cold preform method)
The following issues remain.
■ 大ロフトの生産には適しているか、小ロフト多品種
の生産には不向きである。■ Suitable for producing large lofts, or unsuitable for producing a variety of small lofts.
■ 設備費が高い。■ Equipment costs are high.
■ プリフォームの再加熱によりエネルギー経費が高く
つく。■ Reheating the preform increases energy costs.
■ ブリフす−ムの管理が必要である。■ It is necessary to manage briefs.
本発明者は鋭意研究の結果、−段方式（ホットプリフォ
ーム方式）で上記課題を解決するこ−とを見い出した。As a result of extensive research, the inventors of the present invention have discovered that the above-mentioned problems can be solved by a -stage method (hot preform method).
以下に、その内容を説明する。The contents will be explained below.
（課題解決するための手段および作用効果）本発明は、
結晶化容易なポリエステル樹脂から容器のプリフォーム
を成形する射出成形装置と、該プリフォームを直ちに移
動させる装置と、雄型プラグと雌型金型を備え、且つ雌
型金型には樹脂結晶化用の加熱装置を設けてなる圧空ま
たは真空成形装置とを一連の工程として配置してなるこ
とを特徴とする耐熱性結晶化ポリエステル樹脂容器の製
造装置を内容とする。以下に、図面を参考にして本発明
を詳細説明する。(Means and effects for solving the problem) The present invention has the following features:
An injection molding device that molds a container preform from a polyester resin that easily crystallizes, a device that immediately moves the preform, a male plug and a female mold, and the female mold is equipped with a resin crystallization mold. The present invention relates to an apparatus for manufacturing a heat-resistant crystallized polyester resin container, characterized in that a compressed air or vacuum forming apparatus equipped with a heating device is arranged as a series of steps. The present invention will be described in detail below with reference to the drawings.
耐熱性ＰＥＴ容器を一段方式で製造するには、造は同し
である。To produce heat-resistant PET containers in a single stage, the construction is the same.
原料ＰＥＴは、結晶化可能なものてあればとのようなＰ
ＥＴてもよいか、特に容易に結晶化できるように核剤を
配合したものか好適である。核剤としては公知のもの、
例えばタルク・石こう・シリカ・炭酸カルシウム等の無
機物、ポリエチレン・ポリプロピレン等の有機物か使用
できる。なお、ＰＥＴは含有水分の少ないものが良い。The raw material PET is PET, if it can be crystallized.
ET may be used, or it is preferable that a nucleating agent is added to facilitate crystallization. Known nucleating agents,
For example, inorganic materials such as talc, gypsum, silica, and calcium carbonate, and organic materials such as polyethylene and polypropylene can be used. Note that it is preferable for PET to have a low moisture content.
射出成形の条件は、従来法と変らない。即ち、核剤配合
のＰＥＴを供給し、２８０〜３２０°Ｃの成形温度、５
〜１５秒の成形サイクルで実施することによりプリフォ
ーム（１）か製造される。このプリフォームは直ちに次
工程の熱成形へ移動される。従来の二段方式では、射出
成形で生産されるプリフォームは保管しておき、必要に
応じ、取出％夏
空成型ｔのブリフォー′ムの移動は、図示していないか
、電気・磁気で作動するロホットによる方法、またはキ
ャビティを設置したターンテーブルによる方法なとによ
り所定の位置に高温を保つて行われる。The injection molding conditions are the same as the conventional method. That is, PET containing a nucleating agent was supplied, the molding temperature was 280 to 320°C, and the
A preform (1) is produced by running a molding cycle of ~15 seconds. This preform is immediately transferred to the next step of thermoforming. In the conventional two-stage method, the preform produced by injection molding is stored, and when necessary, the preform for removal and air molding is moved by a method (not shown in the figure) or operated by electricity or magnetism. This is done by keeping a high temperature at a predetermined location using a method using a rotor, or a method using a turntable with a cavity.
圧空または真空成型装置は、雄型プラグ（２）と雌型金
型（３）からなっており、かつ加圧空気吹込み或は真空
機構を有している。金型の所定の位置に移動されたプリ
フォームは、未だ高温を保っているが、好ましくはＰＥ
Ｔのガラス転移屯以上の温度に保持される。次に図−２
に示す通り、このプリフォームが急冷されないように、
加熱された雄型プラグ（２）により雌型金型（３）内に
タテ方向に圧伸される。プリフォーム内には加圧空気か
吹込まれ、雌型金型内面に沿うてヨコ方向に延伸される
ことか図−３に示されている。ここにおいて、タテ・ヨ
コ方向に延伸されたプリフォームは結晶化のため１３０
〜＋９０°Ｃに加熱される。従来は、延伸ブロー金型内
で成形されたプリフォームは水冷され、殆んと結晶化さ
れず透明の製品とされていたか、樹脂か結晶化されてい
ないため耐熱性は得られず、従って電子レンジ加熱やオ
ーブン加熱は不可能であった。The compressed air or vacuum forming device consists of a male plug (2) and a female mold (3), and has a pressurized air blowing or vacuum mechanism. The preform, which is moved into position in the mold and still at high temperature, is preferably made of PE.
The temperature is maintained at a temperature higher than the glass transition temperature of T. Next, Figure 2
As shown in the figure, to prevent this preform from being cooled too quickly,
The heated male plug (2) is drawn into the female mold (3) in the vertical direction. Pressurized air is blown into the preform and stretched in the horizontal direction along the inner surface of the female mold, as shown in Figure 3. Here, the preform stretched in the vertical and horizontal directions has a diameter of 130 mm due to crystallization.
Heated to ~+90°C. Traditionally, preforms molded in stretch blow molds were water-cooled and were made transparent with almost no crystallization, or the resin was not crystallized and therefore did not have heat resistance, so it was difficult to use electronics. Microwave heating or oven heating was not possible.
本発明の雌型金型（３）には、樹脂結晶化用の加熱装置
（４）か組込まれているのか特色である。それには電熱
・加熱等によりＰＥＴか所望に結晶化し得る温度と時間
て熱処理されなければならない。A feature of the female mold (3) of the present invention is that it incorporates a heating device (4) for resin crystallization. For this purpose, the PET must be heat-treated by electric heating, heating, etc. at a temperature and time that will allow the desired crystallization.
ＰＥＴの結晶化は、目的とる容器の種類、用途により相
違するか、通常、結晶化度２０％以上、場合によっては
３０％以上のこともある。このためには、雌型金型は１
３０°Ｃ−＋９０°Ｃの範囲で、厚みによって異なるか
、数秒或は十数秒間加熱調節される必要かある。かくて
樹脂は急速に結晶化され、プリフォームは不透明化され
るか、３０％以上の結晶化度になると製品は２３０°Ｃ
の高温によっても変形しないものとなる。The degree of crystallization of PET varies depending on the type of intended container and its use, and the degree of crystallinity is usually 20% or more, and in some cases 30% or more. For this purpose, the female mold is 1
The temperature range is 30°C to +90°C, depending on the thickness, or it may be necessary to adjust the heating for several seconds or more than ten seconds. Thus, the resin rapidly crystallizes and the preform becomes opaque or the product reaches a temperature of 230°C when the degree of crystallinity exceeds 30%.
It will not deform even at high temperatures.
上記のように、加熱結晶化か終了したら、冷却、固化し
て製品として取出すことできる。かくして、ＰＥＴを使
用して耐熱性を有する食品容器（各種トレー、ボトル等
）か−段方式の装置の組合わせにより工業的に有利に製
造することかできる効果を有するので実用的価値か大き
い。As mentioned above, once the heating crystallization is completed, it can be cooled and solidified to be taken out as a product. In this way, heat-resistant food containers (various trays, bottles, etc.) made of PET can be industrially advantageously manufactured by combining the two-tier type equipment, which has great practical value.
延伸装置、図−３は同ヨコ方向延伸装置の夫々の説明図
である。Stretching Apparatus, FIG. 3 is an explanatory diagram of each of the same lateral direction stretching apparatus.
１・・プリフォーム ２・・・雄型プラグ ３・・・雌型金型 ４・・・加熱装置 図−１ 図−２ 圓−３1. Preform 2...male plug 3...Female mold 4...Heating device Figure-1 Figure-2 En-3
Claims (1)
ームを成形する射出成形装置と、該プリフォームを直ち
に移動させる装置と、雄型プラグと雌型金型を備え、且
つ雌型金型には樹脂結晶化用の加熱装置を設けてなる圧
空または真空成形装置とを一連の工程として配置してな
ることを特徴とする耐熱性結晶化ポリエステル樹脂容器
の製造装置。 ２、結晶化容易なポリエステル樹脂が核剤を配合したも
のである請求項１記載の製造装置。[Claims] 1. An injection molding device that molds a container preform from an easily crystallized polyester resin, a device that immediately moves the preform, a male plug, a female mold, and a female mold. 1. An apparatus for manufacturing a heat-resistant crystallized polyester resin container, characterized in that the mold is equipped with a pressurized air or vacuum forming device equipped with a heating device for resin crystallization as a series of steps. 2. The manufacturing apparatus according to claim 1, wherein the easily crystallized polyester resin contains a nucleating agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2277186A JPH04151227A (en) | 1990-10-15 | 1990-10-15 | Manufacturing device for heat-resistant crystallized polyester resin vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2277186A JPH04151227A (en) | 1990-10-15 | 1990-10-15 | Manufacturing device for heat-resistant crystallized polyester resin vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04151227A true JPH04151227A (en) | 1992-05-25 |
Family
ID=17580010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2277186A Pending JPH04151227A (en) | 1990-10-15 | 1990-10-15 | Manufacturing device for heat-resistant crystallized polyester resin vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04151227A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003011560A1 (en) * | 2001-08-03 | 2003-02-13 | Jan Petrus Human | Production of hollow articles |
| KR102332249B1 (en) * | 2020-07-28 | 2021-12-01 | 설지원 | Pressure forming apparatus for heat resistant pet or pla vessel and method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5476666A (en) * | 1977-11-28 | 1979-06-19 | Hercules Inc | Injection* blow molding machine |
| JPS59103832A (en) * | 1983-10-28 | 1984-06-15 | 東洋紡績株式会社 | Polyester vessel |
-
1990
- 1990-10-15 JP JP2277186A patent/JPH04151227A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5476666A (en) * | 1977-11-28 | 1979-06-19 | Hercules Inc | Injection* blow molding machine |
| JPS59103832A (en) * | 1983-10-28 | 1984-06-15 | 東洋紡績株式会社 | Polyester vessel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003011560A1 (en) * | 2001-08-03 | 2003-02-13 | Jan Petrus Human | Production of hollow articles |
| KR102332249B1 (en) * | 2020-07-28 | 2021-12-01 | 설지원 | Pressure forming apparatus for heat resistant pet or pla vessel and method thereof |
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