JP2000301596A - Frost-like plastic bottle - Google Patents

Frost-like plastic bottle

Info

Publication number
JP2000301596A
JP2000301596A JP11107999A JP11107999A JP2000301596A JP 2000301596 A JP2000301596 A JP 2000301596A JP 11107999 A JP11107999 A JP 11107999A JP 11107999 A JP11107999 A JP 11107999A JP 2000301596 A JP2000301596 A JP 2000301596A
Authority
JP
Japan
Prior art keywords
bottle
pet
plastic bottle
polymer alloy
frost
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
Application number
JP11107999A
Other languages
Japanese (ja)
Inventor
Kiyoshi Wada
潔 和田
Shinji Kaneyuki
伸二 金行
Takashi Saito
剛史 斉藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toppan Inc
Original Assignee
Toppan Printing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP11107999A priority Critical patent/JP2000301596A/en
Publication of JP2000301596A publication Critical patent/JP2000301596A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a plastic frost bottle having a transparent feeling like a glass bottle and a high-grade soft feeling. SOLUTION: In a plastic container using a polymer alloy molding material consisting of polyethylene terephthalate(PET) and polycarbonate(PC), a polymer alloy wherein a wt. ratio of PET:PC is (65:35)-(75:25) is subjected to stretch blow molding at a draw ratio of 1.8 or less. The obtained bottle is suitable to be filled with content at about 70 deg.C.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、日本酒、梅酒、リ
キュール等の酒類、ジュース、サイダー等の飲料水類、
化粧水等に広く使用されているフロスト調のプラスチッ
ク製ボトルに関するものである。
TECHNICAL FIELD The present invention relates to alcoholic beverages such as sake, plum wine and liqueur, drinking water such as juice and cider,
The present invention relates to a frosted plastic bottle widely used for lotion and the like.

【0002】[0002]

【従来の技術】従来、軟らかな高級感のあるフロスト調
の外観を有するボトルとして、主にふっ酸を主剤として
硝酸、硫酸、ガラス粉末を添加した浸食液で表面に凹凸
を形成したガラス製フロストボトルが使用されてきてい
る。このガラス製フロストボトルは化学的に安定で、
酸、アルカリに対して耐久性を有し、内容物に臭いが移
らない、通気性がなく保存性が優れているという長所が
ある反面、重い、衝撃によって破損が生じる等の欠点が
ある。
2. Description of the Related Art Conventionally, as a bottle having a soft, luxurious, frost-like appearance, a glass frost having an uneven surface formed by an erosion liquid containing nitric acid, sulfuric acid and glass powder mainly containing hydrofluoric acid as a main component. Bottles have been used. This glass frost bottle is chemically stable,
It has resistance to acids and alkalis, does not transfer odor to the contents, and has excellent storage stability without air permeability, but has disadvantages such as heavy weight and damage due to impact.

【0003】また、ポリエチレン(PE)、ポリプロピ
レン(PP)、ポリ塩化ビニル(PVC)、ポリエチレ
ンテレフタレート(PET),ポリカーボネート(P
C)、ポリスチレン(PS)或いはこれらの混合物或い
は積層物で作製されているプラスチック製ボトルがあ
る。
In addition, polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polycarbonate (P
C), plastic bottles made of polystyrene (PS) or a mixture or laminate thereof.

【0004】しかし、プラスチック製ボトルは、軽くて
取り扱い易い、錆びない、割れないという長所がある反
面、フロスト調にボトル表面を粗面化した際、ガラス製
ボトルのような透明感があり、しかも軟らかな高級感の
あるプラスチック製フロストボトルを得ることが困難で
あった。
[0004] However, plastic bottles have the advantages that they are light and easy to handle, they do not rust, and they do not break. However, when the surface of the bottle is roughened in a frost-like manner, it has a transparency like a glass bottle, and It was difficult to obtain a soft frosted plastic frosted bottle.

【0005】[0005]

【発明が解決しようとする課題】本発明は、かかる従来
技術の問題点に鑑み、軽くて取り扱い易い、錆びない、
割れないという長所を有し、且つガラス製ボトルのよう
な透明感があり、軟らかな高級感のあるプラスチック製
フロストボトルを提示することを目的としている。
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and is light and easy to handle.
An object of the present invention is to provide a soft frosted plastic frosted bottle that has an advantage of not breaking and has a transparent feeling like a glass bottle and is soft.

【0006】[0006]

【課題を解決するための手段】上記課題を解決するため
になされた請求項1に記載の本発明は、ポリエチレンテ
レフタレート(PET)とポリカーボネート(PC)か
らなるポリマーアロイ成型材料を用いたプラスチック容
器において、前記PET:PCの重量比率が(65:3
5)〜(75:25)であるポリマーアロイを1.8以
下の延伸倍率で延伸ブロー成型したことを特徴とするフ
ロスト調のプラスチック製ボトルである。
According to a first aspect of the present invention, there is provided a plastic container using a polymer alloy molding material comprising polyethylene terephthalate (PET) and polycarbonate (PC). , The weight ratio of PET: PC is (65: 3).
5) A frosted plastic bottle obtained by subjecting the polymer alloy of (5) to (75:25) to stretch blow molding at a draw ratio of 1.8 or less.

【0007】また、請求項2に記載の本発明は、表面を
サンドブラスト、ショットブラスト等で粗面化処理した
金型を用いて、延伸ブロー成型したことを特徴とする請
求項1に記載のフロスト調のプラスチック製ボトルであ
る。表面を延伸ブロー成型時に粗面化することで、フロ
スト調を効果が一層高めることができ、ガラス製ボトル
のような風合いが出てくる。
According to a second aspect of the present invention, there is provided the frost according to the first aspect, wherein the surface is subjected to stretch blow molding using a mold whose surface is roughened by sand blasting, shot blasting or the like. It is a tone-like plastic bottle. By roughening the surface during stretch blow molding, the effect of frosting can be further enhanced, and a texture like a glass bottle appears.

【0008】また、請求項3に記載の本発明は、70℃
前後の温度で内容物を充填するのに好適である請求項
1、請求項2に記載のフロスト調のプラスチック製ボト
ルである。このPETとPCとのポリマーアロイのガラ
ス転移点(Tg)は80±5℃であり、PET単体のガ
ラス転移点(Tg)が70±5℃であるのに対して約1
0℃前後高い。従来汎用されているPETボトルは、通
常70℃以上の温度で内容物を充填するとボトルの肩
部、低部等の延伸部分が変形し、容積も収縮し高温での
実用に耐えられない欠点であるが、本発明のプラスチッ
ク製ボトルは70℃前後の温度でもこのような変形は生
じないという特徴を有している。
[0008] The present invention according to claim 3 is characterized in that at 70 ° C
3. The frosted plastic bottle according to claim 1, which is suitable for filling the contents at a temperature before and after. The glass transition point (Tg) of the polymer alloy of PET and PC is 80 ± 5 ° C., whereas the glass transition point (Tg) of PET alone is 70 ± 5 ° C.,
High around 0 ° C. Conventionally, PET bottles that have been widely used have the drawback that when the contents are filled at a temperature of 70 ° C. or higher, the stretched portions such as the shoulder and the lower part of the bottle are deformed, the volume is shrunk, and they cannot withstand practical use at high temperatures. However, the plastic bottle of the present invention is characterized in that such deformation does not occur even at a temperature of about 70 ° C.

【0009】[0009]

【発明の実施の形態】PET単体の屈折率は1.64,
PC単体の屈折率は1.58であり、このように屈折率
の異なるものを単に混合しただけでは透明性の高い成型
品は得られない。しかし、発明者らは、エステル基を持
ち合わせるPETとPCとを、約70:30の重量比率
で混合し、この樹脂を混練しながら290℃加熱するこ
とで、エステル基交換が行わて相溶性が良く透明性が高
いポリマーアロイが得られこと、及び重量比率が(6
5:35〜75:25)以外の領域になると白濁化が徐
々におこるとの知見を実験的に得た。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The refractive index of PET alone is 1.64,
The refractive index of PC alone is 1.58, and a molded product having high transparency cannot be obtained simply by mixing materials having different refractive indices. However, the inventors mixed PET and PC having an ester group in a weight ratio of about 70:30, and heated the mixture at 290 ° C. while kneading the resin, whereby ester group exchange was performed and compatibility was improved. A good and highly transparent polymer alloy was obtained, and the weight ratio was (6
5:35 to 75:25), it was experimentally obtained that clouding gradually occurs in a region other than 5:35 to 75:25).

【0010】実験は、スクリュー直径37mmの射出成
型機(150トン)を用い、スクリュー回転を120r
pm,滞留時間を30min、温度290℃で、厚さ1
mmの板を成型し、この板の曇り度及び白色度を測定し
た。この結果を次表と図4に示す。
In the experiment, an injection molding machine (150 tons) having a screw diameter of 37 mm was used, and the screw was rotated at 120 rpm.
pm, residence time 30 min, temperature 290 ° C, thickness 1
mm plate was molded, and the haze and whiteness of the plate were measured. The results are shown in the following table and FIG.

【0011】[0011]

【表1】 [Table 1]

【0012】図4のグラフから判るように、PET:P
Cの混合比が70:30において曇り度及び白色度が最
も小さくなることが判った。この両者の値が低いこと
は、透相溶性が良く明性が高いことを示す。
As can be seen from the graph of FIG. 4, PET: P
It was found that when the mixing ratio of C was 70:30, the haze and the whiteness were minimized. A low value of both values indicates that the compatibility is good and the lightness is high.

【0013】この相溶性が良く透明度の高いポリマーア
ロイをSEM(走査電子顕微鏡)で観察すると図1に示
すようなマトリックス(海)(2)がPETで、ドメイ
ン(島)(1)がPCである海島構造を有していること
が判る。
When the polymer alloy having good compatibility and high transparency is observed by SEM (scanning electron microscope), the matrix (sea) (2) is PET and the domain (island) (1) is PC as shown in FIG. It can be seen that it has a certain sea-island structure.

【0014】このポリマーアロイを延伸すると、延伸倍
率に呼応して図2に示すようにドメイン(島)付近にボ
イド(微小な空孔)(3)が発生し、この部分で光が乱
反射を起こしフロスト調になり、更に延伸倍率が大きく
なるとボイドが次第に大きくなり、ボイドの先端が互い
に連絡してクラック(4)が発生し、白濁化してパール
調になってしまう。
When this polymer alloy is stretched, voids (fine voids) (3) are generated near domains (islands) as shown in FIG. 2 in accordance with the stretching ratio, and light is diffusely reflected at this portion. When the draw ratio becomes frosted, and when the stretching ratio is further increased, the voids gradually become larger, and the ends of the voids are connected to each other to generate cracks (4), become cloudy and become pearly.

【0015】1.8倍を越える延伸倍率で延伸すると白
濁してパール調になりクラックが発生しているために
「割れ」の原因となり、落下等による強度も低下してし
まう。1.8倍以下の延伸倍率で延伸した場合には、白
濁と透明の中間的な状態となりガラス製ボトルと同様な
フロスト調プラスチックボトルが得られる。言うまでも
ないが無延伸の場合には、ボイドが発生しないのでフロ
スト調の風合いが得られない。
When the film is stretched at a stretching ratio of more than 1.8 times, the film becomes cloudy and becomes pearly, and cracks are generated. When stretched at a stretch ratio of 1.8 times or less, the state becomes an intermediate state between cloudy and transparent, and a frosted plastic bottle similar to a glass bottle is obtained. Needless to say, in the case of no stretching, no frost-like texture can be obtained because no void is generated.

【0016】また、ポリエチレンテレフタレート(PE
T)とポリカーボネート(PC)からなるポリマーアロ
イ成型材料を用い、ブロー成型時に1.8倍以下の延伸
倍率で延伸して作製されたプラスチックボトルは、前記
したようにガラス転移点(Tg)がPET単体のガラス
転移点(Tg)より約10℃高いことと、ドメイン
(島)付近に発生するボイドが延伸、収縮に対するアブ
ソーバー(緩衝帯)の機能を果たし、ボトルの肩部、低
部等の延伸部分が変形せず、容積の収縮も起こり難くな
る。また、ボトルをフロスト調にすることで、紫外線の
透過率も下がり紫外線吸収剤を添加する必要もなくな
る。
Further, polyethylene terephthalate (PE)
As described above, a plastic bottle made by using a polymer alloy molding material comprising T) and polycarbonate (PC) and stretched at a stretch ratio of 1.8 times or less during blow molding has a glass transition point (Tg) of PET as described above. Approximately 10 ° C. higher than the glass transition point (Tg) of the simple substance, and voids generated near the domain (island) function as an absorber (buffer band) for stretching and shrinking, and stretching of the shoulder, lower part, etc. of the bottle The portion is not deformed, and the volume does not easily shrink. Further, by making the bottle frost-like, the transmittance of ultraviolet rays is reduced, and it is not necessary to add an ultraviolet absorber.

【0017】延伸倍率を1.3倍程度に低く押さえて透
明性を失わせたくない場合は、ブロー成型時、金型表面
にサンドブラスト、ショットブラスト等により表面を粗
面化した金型を用いると、透明性を有しガラス製ボトル
のようなフロスト調のプラスチックボトルを得ることが
できる。
If it is desired not to lose the transparency by keeping the draw ratio low at about 1.3, it is preferable to use a mold whose surface is roughened by sand blasting, shot blasting or the like at the time of blow molding. A frosted plastic bottle such as a glass bottle having transparency can be obtained.

【0018】[0018]

【発明の効果】本発明により、軽くて取り扱い易い、錆
びない、割れないというプラスチックボトルの長所を有
し、且つガラス製ボトルのような透明感、軟らかな高級
感のあるプラスチック製のフロストボトルを作製するこ
とができる。また、成型材料を変え、温度、押出速度等
の成型諸条件を若干変化させるだけで済むので、従来ボ
トルブロー成型に使用されている成型機を用いることが
可能である。また、汎用されているPETボトルの欠点
とされている高温の内容物を充填する際生じる肩部、低
部等の延伸部分の変形、容積の収縮が、本発明では起こ
り難くなっている。
According to the present invention, a plastic frosted bottle having the advantages of a plastic bottle that is light and easy to handle, does not rust and does not break, and has a transparent feeling like a glass bottle and a soft luxury feeling. Can be made. Also, since it is only necessary to change molding materials and slightly change molding conditions such as temperature and extrusion speed, it is possible to use a molding machine conventionally used for bottle blow molding. In addition, deformation of stretched portions such as a shoulder portion and a lower portion and shrinkage of a volume, which occur when filling high-temperature contents, which are disadvantages of commonly used PET bottles, are less likely to occur in the present invention.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に用いたポリマーアロイのSEM画像の
模式図である。
FIG. 1 is a schematic view of an SEM image of a polymer alloy used in the present invention.

【図2】本発明に用いたポリマーアロイの低延伸倍率に
於けるSEM画像の模式図である。
FIG. 2 is a schematic view of an SEM image of a polymer alloy used in the present invention at a low stretching magnification.

【図3】本発明に用いたポリマーアロイの高延伸倍率に
於けるSEM画像の模式図である。
FIG. 3 is a schematic view of an SEM image of the polymer alloy used in the present invention at a high stretching magnification.

【図4】PET:PCの混合比を変化させて得られた成
型品(厚さ1mmの板)の曇り度及び白色度を示すグラ
フである。
FIG. 4 is a graph showing the haze and whiteness of a molded product (1 mm thick plate) obtained by changing the mixing ratio of PET: PC.

【符号の説明】[Explanation of symbols]

1…ドメイン(島) 2…マトリックス(海) 3…ボイド(空孔) 4…クラック 1: Domain (island) 2: Matrix (sea) 3: Void (hole) 4: Crack

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) B29K 69:00 B29L 22:00 Fターム(参考) 4F202 AA24K AF15 AF16 AG07 AH55 CA15 CB01 CD23 CK11 4F208 AA24K AF15 AF16 AG07 AH55 LA04 LB01 LN29 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI theme coat ゛ (Reference) B29K 69:00 B29L 22:00 F term (Reference) 4F202 AA24K AF15 AF16 AG07 AH55 CA15 CB01 CD23 CK11 4F208 AA24K AF15 AF16 AG07 AH55 LA04 LB01 LN29

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】ポリエチレンテレフタレート(PET)と
ポリカーボネート(PC)からなるポリマーアロイ成型
材料を用いたプラスチック容器において、前記PET:
PCの重量比率が(65:35)〜(75:25)であ
るポリマーアロイを1.8以下の延伸倍率で延伸ブロー
成型したことを特徴とするフロスト調プラスチック製ボ
トル。
1. A plastic container using a polymer alloy molding material comprising polyethylene terephthalate (PET) and polycarbonate (PC), wherein said PET:
A frosted plastic bottle obtained by subjecting a polymer alloy having a PC weight ratio of (65:35) to (75:25) to stretch blow molding at a draw ratio of 1.8 or less.
【請求項2】表面を粗面化処理した金型を用い、延伸ブ
ロー成型したことを特徴とする請求項1に記載のフロス
ト調プラスチック製ボトル。
2. The frosted plastic bottle according to claim 1, wherein the frosted plastic bottle is stretch blow-molded using a mold having a roughened surface.
【請求項3】70℃前後の温度で内容物を充填するのに
好適である請求項1、請求項2に記載のフロスト調プラ
スチック製ボトル。
3. The frosted plastic bottle according to claim 1, which is suitable for filling the contents at a temperature of about 70 ° C.
JP11107999A 1999-04-19 1999-04-19 Frost-like plastic bottle Pending JP2000301596A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11107999A JP2000301596A (en) 1999-04-19 1999-04-19 Frost-like plastic bottle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11107999A JP2000301596A (en) 1999-04-19 1999-04-19 Frost-like plastic bottle

Publications (1)

Publication Number Publication Date
JP2000301596A true JP2000301596A (en) 2000-10-31

Family

ID=14551862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11107999A Pending JP2000301596A (en) 1999-04-19 1999-04-19 Frost-like plastic bottle

Country Status (1)

Country Link
JP (1) JP2000301596A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100430208C (en) * 2005-10-09 2008-11-05 华东理工大学 Low temperature solid phase processing method of polymer alloy
JP2010089319A (en) * 2008-10-06 2010-04-22 Honda Plus Kk Manufacturing method of small cosmetic bottle
WO2011077821A1 (en) * 2009-12-24 2011-06-30 富士フイルム株式会社 Molded body having cavity thereinside, and production method thereof
JP5685525B2 (en) * 2009-03-27 2015-03-18 富士フイルム株式会社 Method for producing porous molded body

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100430208C (en) * 2005-10-09 2008-11-05 华东理工大学 Low temperature solid phase processing method of polymer alloy
JP2010089319A (en) * 2008-10-06 2010-04-22 Honda Plus Kk Manufacturing method of small cosmetic bottle
JP5685525B2 (en) * 2009-03-27 2015-03-18 富士フイルム株式会社 Method for producing porous molded body
WO2011077821A1 (en) * 2009-12-24 2011-06-30 富士フイルム株式会社 Molded body having cavity thereinside, and production method thereof

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