JPH0512218B2 - - Google Patents
Info
- Publication number
- JPH0512218B2 JPH0512218B2 JP14165386A JP14165386A JPH0512218B2 JP H0512218 B2 JPH0512218 B2 JP H0512218B2 JP 14165386 A JP14165386 A JP 14165386A JP 14165386 A JP14165386 A JP 14165386A JP H0512218 B2 JPH0512218 B2 JP H0512218B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- polyethylene terephthalate
- surface layer
- bottle
- layer
- 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 - Lifetime
Links
- 229920005989 resin Polymers 0.000 claims description 75
- 239000011347 resin Substances 0.000 claims description 75
- 239000010410 layer Substances 0.000 claims description 50
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 48
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 48
- -1 polyethylene terephthalate Polymers 0.000 claims description 47
- 239000002344 surface layer Substances 0.000 claims description 40
- 229920006015 heat resistant resin Polymers 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 229920003002 synthetic resin Polymers 0.000 description 6
- 239000000057 synthetic resin Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000000071 blow moulding Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は、ポリエチレンテレフタレート樹脂製
瓶及びその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a polyethylene terephthalate resin bottle and a method for producing the same.
(ロ) 従来の技術及び発明が解決しようとする問題
点
ポリエチレンテレフタレート樹脂製瓶は、包装
用瓶の製造材料として透明度が高く、延伸吹込成
形により強度が高まると共に硝子瓶に比べて軽
量、安全、廉価等の特徴を有し広く利用されてい
る。(b) Problems to be solved by the prior art and the invention Polyethylene terephthalate resin bottles have high transparency as a manufacturing material for packaging bottles, have increased strength through stretch blow molding, and are lighter, safer, and lighter than glass bottles. It has characteristics such as low price and is widely used.
しかしながら、ポリエチレンテレフタレートは
熱に弱く、熱液を充填したり、充填後加熱殺菌し
たりすると、瓶の変形や収縮を招いたり、瓶口部
や瓶口部に形成されたフランジの変形を招いたり
することがあり、特に、瓶口部やフラングの変形
は液漏れを惹起したり、充填後キヤツピング時に
フランジの支持が不可となるので由々しき問題で
ある。このような熱変形の対策として、耐熱性の
優れた樹脂を使用し瓶を成形すればよいが、一般
にこの種樹脂は高価で瓶製造コストが高くなり、
又、用途も限られる。 However, polyethylene terephthalate is sensitive to heat, and if it is filled with hot liquid or heat sterilized after filling, it may cause deformation or shrinkage of the bottle, or deformation of the bottle mouth or the flange formed at the bottle mouth. In particular, deformation of the bottle neck or flange is a serious problem as it may cause liquid leakage or make it impossible to support the flange during capping after filling. As a countermeasure against such thermal deformation, it is possible to mold the bottle using a resin with excellent heat resistance, but this type of resin is generally expensive and increases the cost of manufacturing the bottle.
Also, its uses are limited.
そこで、比較的安価なポリエチレンテレフタレ
ート樹脂を主として用い、これに耐熱性の優れた
樹脂を積層して使用することが提案されている。 Therefore, it has been proposed to mainly use a relatively inexpensive polyethylene terephthalate resin and to layer this with a resin having excellent heat resistance.
前記例の一つとして、単一の金型キヤビテイに
１回の型締動作で２種の熱可塑性樹脂をタイミン
グをずらして射出し、多層構造の中空予備成形体
（プリフオーム）を成形し、この中空予備成形体
を吹込成形（ブロー成形）して多層構造の合成樹
脂製瓶を製造する方法がある。即ち、まず、第１
の樹脂を微量射出した後、第１の樹脂と共に第２
の樹脂を同時に射出し、最後に第１の樹脂を少量
射出して、外表面層と内表面層が第１の樹脂で中
間層が第２の樹脂の３層構造の中空予備成形体を
成形し、この中空成形体を吹込成形して多層合成
樹脂製瓶を製造する方法であり、中間層を形成す
る第２の樹脂として耐熱性樹脂を使用すれば、耐
熱性の優れた合成樹脂製瓶が得られる。 As one of the above examples, two types of thermoplastic resins are injected into a single mold cavity at different times in one mold clamping operation to form a multilayer hollow preform. There is a method of manufacturing a multilayer synthetic resin bottle by blow molding a hollow preform. That is, first, the first
After injecting a small amount of resin, the second resin is injected together with the first resin.
, and finally inject a small amount of the first resin to form a hollow preformed body with a three-layer structure in which the outer surface layer and inner surface layer are the first resin, and the middle layer is the second resin. However, this is a method of manufacturing a multilayer synthetic resin bottle by blow molding this hollow molded body, and if a heat resistant resin is used as the second resin forming the intermediate layer, a synthetic resin bottle with excellent heat resistance can be produced. is obtained.
もつとも、このようにして形成された耐熱性を
有する３層構造の合成樹脂製瓶であつても、熱液
の充填等の時に、瓶口部の変形を起こし液漏れを
生じさせたり、フランジの変形を起こし、キヤピ
ツング時に支持不能となることがある。瓶胴部の
多少の変形は商品価値に影響を及ぼさなく、又、
瓶胴部の大きな変形は商品出荷前に選別抜き取り
が可能なのに比べて、瓶口部の変形は、多少であ
つても上記の問題を生ずることが多く、又、蓋締
めすると瓶口部の変形を見過しがちで、出荷後に
液漏れのためケース内の全商品を駄目にする結果
をもたらすので、全く好ましくない。 However, even with heat-resistant three-layer synthetic resin bottles formed in this way, when filling with hot liquid, the mouth of the bottle may deform, causing liquid leakage, or causing damage to the flange. It may deform and become unsupportable during capping. Some deformation of the bottle body does not affect the product value, and
Large deformations in the body of the bottle can be sorted out before shipping the product, but even slight deformations in the mouth of the bottle often cause the above problems, and when the lid is tightened, the deformation of the mouth of the bottle can occur. This is totally undesirable because it is easy to overlook this and end up ruining all the products in the case due to liquid leakage after shipping.
従つて、包装用瓶の材料として、ポリエチレン
テレフタレート樹脂を使用する場合、ポリエチレ
ンフタレート樹脂の耐熱性の低さを補う必要があ
る。即ち、フランジが形成された瓶口部分が熱液
充填時に変形しないように、耐熱性を強化する必
要がある。 Therefore, when polyethylene terephthalate resin is used as a material for packaging bottles, it is necessary to compensate for the low heat resistance of polyethylene phthalate resin. That is, it is necessary to strengthen the heat resistance so that the bottle mouth portion on which the flange is formed does not deform during filling with hot liquid.
瓶又は瓶口部に耐熱性を付与する他の方法とし
て、中空予備成形体又は吹込成形後の瓶を加熱し
て樹脂を結晶化（白化）して耐熱性を付与する方
法がある。しかし、加熱により寸法変形を生ずる
ことがあり、又、加熱工程の付与によるコストが
掛かり、この方法も好ましくない。 Another method for imparting heat resistance to a bottle or a bottle neck is a method of imparting heat resistance by heating a hollow preform or a blow-molded bottle to crystallize (whiten) the resin. However, heating may cause dimensional deformation, and the heating process increases costs, so this method is also not preferred.
本発明は、フランジが形成された瓶口部および
胴部の熱変形を防止する目的でなされたものであ
る。 The present invention has been made for the purpose of preventing thermal deformation of the bottle neck and body on which flanges are formed.
(ハ) 問題点を解決するための手段
上記目的を達成する本発明のポリエチレンテレ
フタレート樹脂性瓶は、熱液充填後キヤツピング
時に瓶を支えるフランジが形成された瓶口部と胴
部を有するポリエチレンテレフタレート樹脂製瓶
であり、瓶口部を、外表面層から内表面層までを
５層以上の樹脂層の構造にし、外表面層と内表面
層を耐熱性樹脂層とし、外表面層と内表面層に挟
まれた３層以上の部分をポリエチレンテレフタレ
ート樹脂層で耐熱性樹脂層を挟んだ層構造とし、
胴部を外表面層と内表面層をポリエチレンテレフ
タレート樹脂層に、中間層を耐熱性樹脂層の３層
構造としたポリエチレンテレフタレート樹脂製瓶
であり、金型キヤビテイに、ポリエチレンテレフ
タレート樹脂を最初に射出し、次にポリエチレン
テレフタレート樹脂の射出を中断し、ポリエチレ
ンテレフタレート樹脂より耐熱性の優れた耐熱性
樹脂を射出し、この耐熱性樹脂を金型との接触に
より冷却しつつあるポリエチレンテレフタレート
樹脂中を通過させ、その後、ポリエチレンテレフ
タレート樹脂と耐熱性樹脂を同時に射出して、熱
液充填後、キヤツピング時に瓶を支えるフランジ
が形成された瓶口部と胴部を有するポリエチレン
テレフタレート樹脂製瓶であり、瓶口部を、外表
面層から内表面層までを５層以上の樹脂層の構造
にし、外表面層と内表面層を耐熱性樹脂層とし、
外表面層と内表面層に挟まれた３層以上の部分を
ポリエチレンテレフタレート樹脂層で耐熱性樹脂
層を挟んだ層構造とし、胴部を外表面層と内表面
層をポリエチレンテレフタレート樹脂層に、中間
層を耐熱性樹脂層の３層構造としたポリエチレン
テレフタレート樹脂製瓶の中空予備成形体を射出
成形し、次いでこの中空予備成形体を吹込成形し
て製造される。(C) Means for Solving the Problems The polyethylene terephthalate resin bottle of the present invention that achieves the above object is made of polyethylene terephthalate resin, which has a bottle opening and a body with a flange that supports the bottle during capping after filling with hot liquid. It is a resin bottle, and the bottle opening has a structure of five or more resin layers from the outer surface layer to the inner surface layer, the outer surface layer and the inner surface layer are heat-resistant resin layers, and the outer surface layer and the inner surface layer are made of heat-resistant resin. The portion of three or more layers sandwiched between the layers has a layered structure in which a heat-resistant resin layer is sandwiched between polyethylene terephthalate resin layers,
It is a polyethylene terephthalate resin bottle with a three-layer structure: the body is an outer surface layer, the inner surface layer is a polyethylene terephthalate resin layer, and the middle layer is a heat-resistant resin layer. Polyethylene terephthalate resin is first injected into the mold cavity. Then, the injection of polyethylene terephthalate resin is interrupted, and a heat-resistant resin with better heat resistance than polyethylene terephthalate resin is injected, and this heat-resistant resin is passed through the polyethylene terephthalate resin, which is being cooled by contact with the mold. After that, polyethylene terephthalate resin and heat-resistant resin are simultaneously injected to create a bottle made of polyethylene terephthalate resin, which has a bottle opening and a body with a flange that supports the bottle during capping after filling with hot liquid. The part has a structure of five or more resin layers from the outer surface layer to the inner surface layer, and the outer surface layer and the inner surface layer are heat-resistant resin layers,
The three or more layers sandwiched between the outer surface layer and the inner surface layer have a layered structure in which a heat-resistant resin layer is sandwiched between polyethylene terephthalate resin layers, and the outer surface layer and inner surface layer of the body are made of polyethylene terephthalate resin layers. It is manufactured by injection molding a hollow preformed body of a polyethylene terephthalate resin bottle having a three-layer structure with a heat-resistant resin layer as an intermediate layer, and then blow molding this hollow preformed body.
次に、添附の図面に従い、本発明のポリエチレ
ンテレフタレート樹脂製瓶とその製造方法の一例
を説明する。 Next, an example of a polyethylene terephthalate resin bottle of the present invention and a method for manufacturing the same will be described with reference to the accompanying drawings.
第１図に示されるように、金型キヤビテイ１に
ゲート２より第１のポリエチレンテレフタレート
樹脂３の溶融体を射出注入した後、射出を中断す
る。次いで、第１のポリエチレンテレフタレート
樹脂３より耐熱性の優れた第２の熱可塑性合成樹
脂４の溶融体を射出注入し、第２図に示されるよ
うに、第２の樹脂を金型との接触により冷却しつ
つある第１のポリエチレンテレフタレート樹脂３
の中を通過させる。 As shown in FIG. 1, after the melt of the first polyethylene terephthalate resin 3 is injected into the mold cavity 1 through the gate 2, the injection is interrupted. Next, a melt of a second thermoplastic synthetic resin 4 having better heat resistance than the first polyethylene terephthalate resin 3 is injected, and as shown in FIG. 2, the second resin is brought into contact with a mold. The first polyethylene terephthalate resin 3 is being cooled by
pass through.
その後、第１のポリエチレンテレフタレート樹
脂３と第２の樹脂４を同時に（第３図の例）射出
注入して、第３図に示されるようにポリエチレン
テレフタレート樹脂製瓶の中空予備成形体５を得
る。 Thereafter, the first polyethylene terephthalate resin 3 and the second resin 4 are simultaneously injected (example shown in FIG. 3) to obtain a hollow preformed body 5 of a polyethylene terephthalate resin bottle as shown in FIG. .
次に、この中空予備成形体５を、吹込成形、即
ち、大きな型キヤビテイを有する金型キヤビテイ
内で、ガス圧により金型キヤビテイに一致するよ
うに膨脹させ、第４図に示されるポリエチレンテ
レフタレート樹脂製瓶６を得る。この瓶６のフラ
ンジが形成された口部７の積層構造は、第４図に
示されるように５層構造で、内表面層と外表面層
が耐熱性を有する第２の樹脂４で形成され、内層
が第１のポリエチレンテレフタレート樹脂３、第
２の樹脂４、第１のポリエチレンテレフタレート
樹脂３の順に形成されている。又、瓶６の胴部６
は、３層構造であり、口部７の内表面層と外表面
層間にはさまれた内層部分の構造と同一となつて
いる。 Next, this hollow preform 5 is blow molded, that is, in a mold cavity having a large mold cavity, it is expanded by gas pressure to match the mold cavity, and the polyethylene terephthalate resin shown in FIG. Bottle 6 is obtained. The laminated structure of the mouth 7 on which the flange of the bottle 6 is formed is a five-layer structure as shown in FIG. , the inner layer is formed of a first polyethylene terephthalate resin 3, a second resin 4, and a first polyethylene terephthalate resin 3 in this order. Also, the body 6 of the bottle 6
has a three-layer structure, which is the same as the structure of the inner layer portion sandwiched between the inner surface layer and the outer surface layer of the mouth portion 7.
(ニ) 実施例 以下に、本発明の実施例を示す。(d) Examples Examples of the present invention are shown below.
長さ131mm、外形25mm、平均厚さ４mmの中空予
備成形体の金型キヤビテイに、まず第１の樹脂と
してポリエチレンテレフタレート（PET）を2.8
秒間射出し、0.1秒間射出を中断した後、第２の
樹脂として耐熱性を有する。主としてフタル酸、
エチレングリコール及びビスフエノールＡより脱
水重合により作られる。「Ｕポリマー（Ｕ−
8400）」（ユニチカ(株)製）を0.1秒間射出した後、
第１の樹脂であるポリエチレンテレフタレート
（PET）を10秒間射出し、10秒間冷却して中空予
備成形体を得る。この中空予備成形体を延伸吹込
成形（延伸ブロー成形）し、内容量１リツトルの
ポリエチレンテレフタレート樹脂製瓶を製造し
た。 First, polyethylene terephthalate (PET) was added as the first resin to the mold cavity of a hollow preform with a length of 131 mm, an external diameter of 25 mm, and an average thickness of 4 mm.
After injecting for seconds and interrupting injection for 0.1 seconds, it has heat resistance as the second resin. Mainly phthalic acid,
It is made from ethylene glycol and bisphenol A by dehydration polymerization. “U polymer (U-
8400) (manufactured by Unitika Co., Ltd.) for 0.1 seconds,
The first resin, polyethylene terephthalate (PET), is injected for 10 seconds and cooled for 10 seconds to obtain a hollow preform. This hollow preform was stretch blow molded to produce a polyethylene terephthalate resin bottle having an internal capacity of 1 liter.
この瓶のフランジが形成された口部は、内表面
層と外表面層が第２の樹脂で形成され、内層が第
１の樹脂、第２の樹脂、第１の樹脂の順に形成さ
れた５層構造であり、胴部は上記口部の内層と同
じく、第１の樹脂、第２の樹脂、第１の樹脂の順
に形成された３層構造で、下記の条件で熱液の充
填を行つたが、液漏れは全くなく、その口部は優
れた耐熱性を示した。 The flange-formed mouth of this bottle has an inner surface layer and an outer surface layer formed of the second resin, and an inner layer formed of the first resin, the second resin, and the first resin in this order. It has a layered structure, and the body has a three-layered structure in which the first resin, the second resin, and the first resin are formed in this order, similar to the inner layer of the mouth part, and the body is filled with hot liquid under the following conditions. The ivy did not leak at all, and its mouth showed excellent heat resistance.
充填条件
充填熱液の温度 90℃
キヤツピング アルミキヤツプを使用
キヤツプをした瓶を３分間横に倒した状態で放
置し、次に正立させて５分間放置し、室温の水を
シヤワーして冷却する。Filling conditions Temperature of filling hot liquid: 90℃ Capping: Use aluminum cap Leave the capped bottle on its side for 3 minutes, then stand it upright and leave it for 5 minutes, then shower with room temperature water to cool it down. .
(ホ) 作用及び効果
本発明のポリエチレンテレフタレート樹脂製瓶
は、上述のようにその瓶口部を、外表面層と内表
面層を耐熱性樹脂で形成した５層以上の又その胴
部を中間層を耐熱性樹脂で形成した３層の積層構
造にしたので、熱液を充填しても寸法変形を防止
でき、液もれを生じることなく、又キヤツピング
時支障なく支持で来るのでその実用性は高い。(e) Functions and Effects As described above, the polyethylene terephthalate resin bottle of the present invention has a mouth portion made of five or more layers in which the outer surface layer and the inner surface layer are made of heat-resistant resin, and the body portion made of a heat-resistant resin. The three-layer laminated structure made of heat-resistant resin prevents dimensional deformation even when filled with hot liquid, prevents liquid leakage, and provides support without problems during capping, making it highly practical. is expensive.
第１図乃第３図は合成樹脂製瓶の製造方法の一
例の説明図、第４図は本発明のポリエチレンテレ
フタレート樹脂製瓶の一例の断面図である。
１……型キヤビテイ、２……ゲート、３……第
１の樹脂、４……第２の樹脂、５……中空予備成
形体、６……瓶、７……瓶口部。
1 to 3 are explanatory diagrams of an example of a method for manufacturing a synthetic resin bottle, and FIG. 4 is a sectional view of an example of a polyethylene terephthalate resin bottle of the present invention. DESCRIPTION OF SYMBOLS 1... Mold cavity, 2... Gate, 3... First resin, 4... Second resin, 5... Hollow preform, 6... Bottle, 7... Bottle opening.
Claims (1)
ンジが形成された瓶口部と胴部を有するポリエチ
レンテレフタレート樹脂製瓶であり、瓶口部を、
外表面層から内表面層までを５層以上の樹脂層の
構造にし、外表面層と内表面層を耐熱性樹脂層と
し、外表面層と内表面層に挟まれた３層以上の部
分をポリエチレンテレフタレート樹脂層で耐熱性
樹脂層を挟んだ層構造とし、胴部を外表面層と内
表面層をポリエチレンテレフタレート樹脂層に、
中間層を耐熱性樹脂層の３層構造としたポリエチ
レンテレフタレート樹脂製瓶。 ２ 金型キヤビテイに、ポリエチレンテレフタレ
ート樹脂を最初に射出し、次にポリエチレンテレ
フタレート樹脂の射出を中断し、ポリエチレンテ
レフタレート樹脂より耐熱性の優れた耐熱性樹脂
を射出し、この耐熱性樹脂を金型との接触により
冷却しつつあるポリエチレンテレフタレート樹脂
中を通過させ、その後、ポリエチレンテレフタレ
ート樹脂と耐熱性樹脂を同時に射出して、熱液充
填後キヤツピング時に瓶を支えるフランジが形成
された瓶口部と胴部を有するポリエチレンテレフ
タレート樹脂製瓶であり、瓶口部を、外表面層か
ら内表面層までを５層以上の樹脂層の構造にし、
外表面層と内表面層を耐熱性樹脂層とし、外表面
層と内表面層に挟まれた３層以上の部分をポリエ
チレンテレフタレート樹脂層で耐熱性樹脂層を挟
んだ層構造とし、胴部を外表面層と内表面層をポ
リエチレンテレフタレート樹脂層に、中間層を耐
熱性樹脂層の３層構造としたポリエチレンテレフ
タレート樹脂製瓶の中空予備成形体を射出成形
し、次いでこの中空予備成形体を吹込成形して、
前記ポリエチレンテレフタレート樹脂製瓶を製造
する方法。[Scope of Claims] 1. A bottle made of polyethylene terephthalate resin, which has a bottle opening and a body in which a flange is formed to support the bottle during capping after filling with a hot liquid, and the bottle opening includes:
The structure has five or more resin layers from the outer surface layer to the inner surface layer, the outer surface layer and the inner surface layer are heat-resistant resin layers, and the portion between the outer surface layer and the inner surface layer has three or more layers. It has a layered structure with a heat-resistant resin layer sandwiched between polyethylene terephthalate resin layers, and the body is an outer surface layer and an inner surface layer is a polyethylene terephthalate resin layer.
A polyethylene terephthalate resin bottle with a three-layer structure with a heat-resistant resin layer as the middle layer. 2 First inject polyethylene terephthalate resin into the mold cavity, then stop the injection of polyethylene terephthalate resin, inject a heat-resistant resin that has better heat resistance than polyethylene terephthalate resin, and combine this heat-resistant resin with the mold. The polyethylene terephthalate resin and the heat-resistant resin are then simultaneously injected to form a bottle opening and body with a flange that supports the bottle during capping after filling with hot liquid. A bottle made of polyethylene terephthalate resin having a bottle opening having a structure of five or more resin layers from the outer surface layer to the inner surface layer,
The outer surface layer and the inner surface layer are heat-resistant resin layers, and the three or more layers sandwiched between the outer surface layer and the inner surface layer have a layered structure in which the heat-resistant resin layer is sandwiched between polyethylene terephthalate resin layers. A hollow preform of a polyethylene terephthalate resin bottle with a three-layer structure consisting of a polyethylene terephthalate resin layer as the outer surface layer and an inner surface layer, and a heat-resistant resin layer as the middle layer is injection molded, and then this hollow preform is blown. Shape it,
A method of manufacturing the polyethylene terephthalate resin bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61141653A JPS6355A (en) | 1986-06-18 | 1986-06-18 | Bottle made of synthetic resin and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61141653A JPS6355A (en) | 1986-06-18 | 1986-06-18 | Bottle made of synthetic resin and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6355A JPS6355A (en) | 1988-01-05 |
| JPH0512218B2 true JPH0512218B2 (en) | 1993-02-17 |
Family
ID=15297049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61141653A Granted JPS6355A (en) | 1986-06-18 | 1986-06-18 | Bottle made of synthetic resin and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6355A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9224581B2 (en) | 2010-02-08 | 2015-12-29 | Roth & Rau Ag | Parallel plate reactor for uniform thin film deposition with reduced tool foot-print |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59101798U (en) * | 1982-12-22 | 1984-07-09 | 九州日立マクセル株式会社 | multifunctional toilet bowl |
| US4696865A (en) * | 1984-04-20 | 1987-09-29 | Monsanto Company | Hollow copolyamide article |
| US4721654A (en) * | 1984-04-20 | 1988-01-26 | Monsanto Company | Hollow, molecularly oriented copolyamide article |
| JP2577232B2 (en) * | 1987-02-27 | 1997-01-29 | 日精エー・エス・ビー機械株式会社 | Heat-resistant structure of synthetic resin container neck |
| US4990301A (en) * | 1989-01-25 | 1991-02-05 | Continental Pet Technologies, Inc. | Method and apparatus for injection molding of multilayer preforms |
| JPH0329738A (en) * | 1989-06-23 | 1991-02-07 | Dainippon Printing Co Ltd | Heat-resistant multi-layer bottle |
| JP3497301B2 (en) * | 1995-11-08 | 2004-02-16 | 本田技研工業株式会社 | Method for producing synthetic resin molded article |
| JP6898006B2 (en) | 2019-12-23 | 2021-07-07 | テック大洋工業株式会社 | Laminated body and rust prevention method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5416582A (en) * | 1977-07-07 | 1979-02-07 | Asahi Chem Ind Co Ltd | Laminated film |
| JPS5430272A (en) * | 1977-08-12 | 1979-03-06 | Asahi Chem Ind Co Ltd | Laminated film |
| JPS5453179A (en) * | 1977-10-04 | 1979-04-26 | Mitsui Petrochem Ind Ltd | Multi-layer laminate |
| JPS56167442A (en) * | 1980-05-30 | 1981-12-23 | Dainippon Printing Co Ltd | Multilayer drawn bottle and its manufacture |
| JPS6169539A (en) * | 1984-09-14 | 1986-04-10 | 日精エ−・エス・ビ−機械株式会社 | Synthetic resin vessel for recovery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5669434U (en) * | 1979-11-01 | 1981-06-09 | ||
| JPS5899034U (en) * | 1981-12-26 | 1983-07-05 | 積水化成品工業株式会社 | multilayer container |
-
1986
- 1986-06-18 JP JP61141653A patent/JPS6355A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5416582A (en) * | 1977-07-07 | 1979-02-07 | Asahi Chem Ind Co Ltd | Laminated film |
| JPS5430272A (en) * | 1977-08-12 | 1979-03-06 | Asahi Chem Ind Co Ltd | Laminated film |
| JPS5453179A (en) * | 1977-10-04 | 1979-04-26 | Mitsui Petrochem Ind Ltd | Multi-layer laminate |
| JPS56167442A (en) * | 1980-05-30 | 1981-12-23 | Dainippon Printing Co Ltd | Multilayer drawn bottle and its manufacture |
| JPS6169539A (en) * | 1984-09-14 | 1986-04-10 | 日精エ−・エス・ビ−機械株式会社 | Synthetic resin vessel for recovery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9224581B2 (en) | 2010-02-08 | 2015-12-29 | Roth & Rau Ag | Parallel plate reactor for uniform thin film deposition with reduced tool foot-print |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6355A (en) | 1988-01-05 |
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