JPS6394814A - Base cup for carbonated deverage container - Google Patents
Base cup for carbonated deverage containerInfo
- Publication number
- JPS6394814A JPS6394814A JP24075186A JP24075186A JPS6394814A JP S6394814 A JPS6394814 A JP S6394814A JP 24075186 A JP24075186 A JP 24075186A JP 24075186 A JP24075186 A JP 24075186A JP S6394814 A JPS6394814 A JP S6394814A
- Authority
- JP
- Japan
- Prior art keywords
- base cup
- mold
- preform
- injection
- 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.)
- Granted
Links
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 229920006230 thermoplastic polyester resin Polymers 0.000 claims abstract description 11
- 235000014171 carbonated beverage Nutrition 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract description 8
- 239000007924 injection Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- -1 polyethylene terephthalate Polymers 0.000 abstract description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 4
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000007666 vacuum forming Methods 0.000 description 2
- 101100441413 Caenorhabditis elegans cup-15 gene Proteins 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000010103 injection stretch blow moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/0261—Bottom construction
- B65D1/0284—Bottom construction having a discontinuous contact surface, e.g. discrete feet
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は合成樹脂製の炭酸飲料容器の底部を保護する
ベースカップに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a base cup for protecting the bottom of a carbonated beverage container made of synthetic resin.
通常ベースカップは、炭酸飲料を充填した状態において
、合成樹脂製の容器が落下した際に生じ易い底部の破損
を防止するために、容器底部に嵌着されてる。Usually, the base cup is fitted onto the bottom of the container to prevent the bottom from being damaged when the synthetic resin container is dropped when filled with a carbonated beverage.
このベースカップには高密度ポリエチレン樹脂が使用さ
れている。これは高密度ポリエチレン樹脂が安価であり
、着色及び成形が容易な外、衛生的で落下時の衝撃をも
吸収するなどの理由からで、時には塩化ビニールの場合
もある。This base cup is made of high-density polyethylene resin. This is because high-density polyethylene resin is inexpensive, easy to color and mold, and is also hygienic and absorbs shock when dropped. Sometimes vinyl chloride is used.
炭酸飲料用容器としては熱可塑性ポリエステル樹脂が広
く使用されており、また使用後に容器を回収して樹脂を
再利用することも行われつつある。Thermoplastic polyester resins are widely used as containers for carbonated beverages, and it is becoming increasingly common to collect containers after use and reuse the resin.
この場合、ベースカップがポリエステル樹脂とは異なる
他の樹脂からなると、再利用に際して容器とベースカッ
プとを分離する必要が生じ、この分離に要する費用が再
生樹脂のコスト上昇の原因となり、廉価であるべき再生
樹脂の価格低下の妨げとなっている。In this case, if the base cup is made of a resin other than polyester resin, it will be necessary to separate the container and base cup when reusing it, and the cost of this separation will cause an increase in the cost of recycled resin, making it less expensive. This is hindering the reduction in the price of recycled resin.
そこで射出または真空成形などをもってベースカップを
も熱可塑性ポリエステル樹脂により形成して上記問題点
を解決することが試みられているが、射出成形されたポ
リエステル樹脂製のものは衝撃強度に弱く、落下により
容易に破損してベースカップとして使用し難い。Attempts have been made to solve the above problem by forming the base cup from thermoplastic polyester resin through injection or vacuum molding, but the injection molded polyester resin has poor impact strength and is easily damaged by drops. It is easily damaged and difficult to use as a base cup.
また真空成形では、シートを作り、そのシートを加熱し
て成形を行い、形成されたベースカップをシートから切
り離すなどの手数と、切り離しによるシートのロスなど
から、射出成形に比べて高価格となり、肉厚分布などに
も問題があった。In addition, vacuum forming is more expensive than injection molding due to the labor involved in making a sheet, heating the sheet to form it, and separating the formed base cup from the sheet, as well as the loss of the sheet due to separation. There were also problems with wall thickness distribution.
この発明は上記従来の問題点を解決するために考えられ
たものであって、その目的は衝撃強度に優れ、真空成形
の場合よりも廉価に供給できる新たな熱可塑性ポリエス
テル樹脂によるベースカップを提供することにある。This invention was devised to solve the above conventional problems, and its purpose is to provide a base cup made of a new thermoplastic polyester resin that has excellent impact strength and can be supplied at a lower cost than vacuum forming. It's about doing.
〔問題点を解決するための手段〕
上記目的によるこの発明は、射出成形された熱可塑性ポ
リエステル樹脂のプリフォームを、軸方向に延伸すると
共に膨脹して形成した断面形状が炭酸飲料容器の底部と
適合するカップからなり、かつカップは少なくとも胴部
及び底部が二輪配向されていることを要旨とするもので
あり、また熱可塑性ポリエステル樹脂は、新しい樹脂は
勿論のこと、再生樹脂または再生樹脂と新しい樹脂との
ブレンドとし、これにより上記従来の問題点を解決して
なる。[Means for Solving the Problems] This invention according to the above object has a cross-sectional shape formed by stretching an injection-molded thermoplastic polyester resin preform in the axial direction and expanding it, so that the cross-sectional shape corresponds to the bottom of a carbonated beverage container. It consists of a compatible cup, and the cup has at least a body and a bottom oriented in two-ring orientation, and the thermoplastic polyester resin can be made of not only new resin but also recycled resin or recycled resin and new resin. It is blended with resin, thereby solving the above conventional problems.
上記構成のベースカップにあっては、材料が炭酸飲料用
容器として用いられる熱可塑性ポリエステル樹脂である
ことから、容器と共に再利用し役立て得る。また二軸配
向されているために衝撃強度にも優れ、炭酸飲料用容器
の底部保護にきわめて有効な作用を呈する。Since the base cup having the above structure is made of a thermoplastic polyester resin used as a container for carbonated beverages, it can be reused and used together with the container. Furthermore, because it is biaxially oriented, it has excellent impact strength and is extremely effective in protecting the bottom of carbonated beverage containers.
以下この発明を図示の実施例により詳細に説明する。The present invention will be explained in detail below with reference to illustrated embodiments.
第１図において、１は射出延伸吹込成形により形成した
ポリエチレンテレフタレート樹脂による丸底の炭酸飲料
用容器、２はベースカップで、射出成形されたポリエチ
レンテレフタレート樹脂のプリフォームを、軸方向に延
伸すると共に膨脹して形成され、少なくとも胴部及び底
部が二軸配向されたものからなる。In Fig. 1, 1 is a round-bottom carbonated beverage container made of polyethylene terephthalate resin formed by injection stretch blow molding, and 2 is a base cup, in which the injection-molded polyethylene terephthalate resin preform is stretched in the axial direction. It is inflated and has at least a body and a bottom that are biaxially oriented.
第２図以下は上記ベースカップの成形方法を示すもので
、まず第２図に示すように、射出雄型１０と射出雌型１
１とをネック型１２を介し型閉じして形成されたキャビ
ティに、射出装置１３がらポリエチレンテレフタレート
の溶融樹脂１４を射出充填して、残底のブリフオーム１
５を一次成形する。おな材料は再生樹脂または再生樹脂
と新しい樹脂のブレンドであってもよい。Figure 2 and subsequent figures show a method of molding the base cup. First, as shown in Figure 2, an injection male mold 10 and an injection female mold 1 are shown.
1 and 1 through the neck mold 12, a molten resin 14 of polyethylene terephthalate is injected and filled into the cavity formed using the injection device 13, and the remaining bottom of the bryform 1 is filled.
5 is first formed. The additional material may be a recycled resin or a blend of recycled and new resin.
次に第３図に示すように、上記プリフォーム１５をネッ
ク型１２と共に吹込金型１６に移送する。そして中央部
に延伸ロッド１７とエア通路１８とを有（る吹込シール
型１９を、上記ネック型１２に挿入して型閉じを行った
のち、延伸ロッド１７を伸長してプリフォーム１５を軸
方向に延伸すると共に、エアを吹込んでプリフォーム１
５をキャビティ一杯に膨脹させて、上記容器１の底部と
適合する断面形状の上記ベースカップ２に成形する。Next, as shown in FIG. 3, the preform 15 is transferred together with the neck mold 12 to a blow mold 16. Then, a blow seal mold 19 having a stretching rod 17 and an air passage 18 in the center is inserted into the neck mold 12 to close the mold, and then the stretching rod 17 is extended to move the preform 15 in the axial direction. At the same time, air is blown into the preform 1.
5 is inflated to fill the cavity and formed into the base cup 2 having a cross-sectional shape that matches the bottom of the container 1.
上記のようにして形成した第４図のベースカップ２は、
プリフォーム１５の開口周縁をネック型１２と吹込シー
ル型１９とにより挟持して延伸吹込成形を行ったため、
開口周縁部２ａは二軸配向されず、胴部２ｂ及び底部２
Ｃが二軸配向されたものとなる。The base cup 2 shown in FIG. 4 formed as described above is
Since stretch blow molding was performed with the opening periphery of the preform 15 sandwiched between the neck mold 12 and the blow seal mold 19,
The opening peripheral portion 2a is not biaxially oriented, and the body portion 2b and the bottom portion 2
C becomes biaxially oriented.
またベースカップ全体を二軸配向する場合には、第５図
に示すように、口部２０ａが胴部２０ｂよりも小径の中
間体２０を延伸吹込成形し、その中間体２０を胴部２０
ｂの上方にて切断して、胴部２０ｂと底部２０ｃとから
なる上記ベースカップ２を形成する。In addition, when the entire base cup is biaxially oriented, as shown in FIG.
By cutting above b, the base cup 2 consisting of a body portion 20b and a bottom portion 20c is formed.
なおプリフォーム１５の断面形状はベースカップ２の重
量や肉厚によって決定されるので、特に実施例の形状に
限定されるものではない。Note that the cross-sectional shape of the preform 15 is determined by the weight and wall thickness of the base cup 2, so it is not particularly limited to the shape of the embodiment.
この発明は、射出成形した熱可塑性ポリエステル樹脂の
プリフォームを二軸配向してベースカップを形成してな
ることから、材料ロスがなく、衝撃強度にも優れ、また
熱可塑性ポリエステル樹脂をもって形成した炭酸飲料用
容器と共にそのまま再利用することができ、成形材料と
して再生樹脂を用いることができるので、ベースカップ
のコスト節減を図ることもできるなどの特長を有する。This invention has a base cup formed by biaxially orienting an injection-molded thermoplastic polyester resin preform, so there is no material loss and has excellent impact strength. Since it can be reused as is along with the beverage container, and recycled resin can be used as the molding material, it has the advantage of reducing the cost of the base cup.
図面はこの発明に係る炭酸飲料容器用ベースカップの実
施例を示すもので、第１図は炭酸飲料容器とベースカッ
プの縦断面図、第２図及び第３図は成形工程を示す金型
の縦断面図、第４図はベースカップの縦断面図、第５図
は他の手段によるベースカップの成形工程を示す金型の
縦断面図、第６図は中間体をベースカップに切断形成し
た際の縦断面図である。
１・・・炭酸飲料容器
２・・・ベースカップ
１５・・・プリフォーム
２０・・・中間体The drawings show an embodiment of the base cup for a carbonated beverage container according to the present invention, and FIG. 1 is a longitudinal sectional view of the carbonated beverage container and the base cup, and FIGS. 2 and 3 are views of a mold showing the molding process. 4 is a longitudinal sectional view of the base cup, FIG. 5 is a longitudinal sectional view of a mold showing the process of forming the base cup by other means, and FIG. 6 is a longitudinal sectional view of the intermediate body cut into the base cup. FIG. 1... Carbonated beverage container 2... Base cup 15... Preform 20... Intermediate
Claims (3)
フォームを、軸方向に延伸すると共に膨脹して形成した
断面形状が炭酸飲料容器の底部と適合するカップからな
り、かつカップは少なくとも胴部及び底部が二軸配向さ
れていることを特徴とする炭酸飲料容器用ベースカップ
。(1) A cup is formed by axially stretching and expanding an injection-molded thermoplastic polyester resin preform, and the cross-sectional shape matches the bottom of a carbonated beverage container, and the cup has at least a body and a bottom. A base cup for a carbonated beverage container, characterized in that the base cup is biaxially oriented.
る特許請求の範囲第１項記載の炭酸飲料容器用ベースカ
ップ。(2) The base cup for a carbonated beverage container according to claim 1, wherein the thermoplastic polyester resin is made of recycled resin.
い樹脂とのブレンドからなる特許請求の範囲第１項記載
の炭酸飲料容器用ベースカップ。(3) The base cup for a carbonated beverage container according to claim 1, wherein the thermoplastic polyester resin is a blend of recycled resin and new resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24075186A JPH0615197B2 (en) | 1986-10-09 | 1986-10-09 | Vescap for carbonated beverage containers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24075186A JPH0615197B2 (en) | 1986-10-09 | 1986-10-09 | Vescap for carbonated beverage containers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6394814A true JPS6394814A (en) | 1988-04-25 |
| JPH0615197B2 JPH0615197B2 (en) | 1994-03-02 |
Family
ID=17064165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24075186A Expired - Lifetime JPH0615197B2 (en) | 1986-10-09 | 1986-10-09 | Vescap for carbonated beverage containers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0615197B2 (en) |
-
1986
- 1986-10-09 JP JP24075186A patent/JPH0615197B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0615197B2 (en) | 1994-03-02 |
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