JP2002240135A - Preliminary molding for blow molding - Google Patents

Preliminary molding for blow molding

Info

Publication number
JP2002240135A
JP2002240135A JP2001046270A JP2001046270A JP2002240135A JP 2002240135 A JP2002240135 A JP 2002240135A JP 2001046270 A JP2001046270 A JP 2001046270A JP 2001046270 A JP2001046270 A JP 2001046270A JP 2002240135 A JP2002240135 A JP 2002240135A
Authority
JP
Japan
Prior art keywords
preform
molding
blow molding
printing
molded product
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
JP2001046270A
Other languages
Japanese (ja)
Inventor
Daisuke Uesugi
大輔 上杉
Naoto Hara
直人 原
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.)
Yoshino Kogyosho Co Ltd
Original Assignee
Yoshino Kogyosho 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 Yoshino Kogyosho Co Ltd filed Critical Yoshino Kogyosho Co Ltd
Priority to JP2001046270A priority Critical patent/JP2002240135A/en
Publication of JP2002240135A publication Critical patent/JP2002240135A/en
Pending legal-status Critical Current

Links

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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
    • 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
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
    • 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
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/26—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at body portion
    • 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
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
    • 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
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
    • 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
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3032—Preforms or parisons made of several components having components being injected
    • 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
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3041—Preforms or parisons made of several components having components being extruded

Landscapes

  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To propose a preliminary molding which can omit indispensable pretreatment when decoration such as printing is applied to a blow-molded article. SOLUTION: As the preliminary molding in the shape of a hollow tube which is manufactured by extrusion molding, injection molding, etc., a surface treatment area is formed at least in part of the barrel part of the preliminary molding.

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、ブロー成形に際し
てプリフォームあるいはパリソンとして用いられる予備
成形体に関し、該予備成形体のブロー成形後の成形品に
対して実施される加飾のための印刷、接着あるいはめっ
き処理につき、その親和性を簡易な工程の下で有利に改
善しようとするものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a preform used as a preform or parison in blow molding, and relates to printing for decoration performed on a molded product after blow molding of the preform. The present invention is intended to advantageously improve the affinity of the bonding or plating process in a simple process.

【０００２】[0002]

【従来の技術】ブロー整形用の予備成形体としては、例
えばポリエチレンテレフタレート等からなる熱可塑性合
成樹脂を、押出し成形やインジェクション成形によって
中空管状としたプリフォームが知られている。2. Description of the Related Art As a preform for blow molding, there is known a preform in which a thermoplastic synthetic resin such as polyethylene terephthalate is formed into a hollow tubular shape by extrusion or injection molding.

【０００３】かかるプリフォームは、容器等を成形する
際に用いられる基本素材であって、これは、ブロー成形
用の金型内に装填、型締されたのち、その内部に空気を
吹き込んで伸延させ、金型のキャビティーに従う形状を
有する成形品として仕上げられ、その後に、サイズや用
途に応じてラベルの貼付等種々の加飾が施される。[0003] Such a preform is a basic material used for molding a container or the like. The preform is loaded into a mold for blow molding, clamped, and then blown with air into the interior to extend the preform. Then, it is finished as a molded product having a shape according to the cavity of the mold, and thereafter, various decorations such as sticking of a label are performed according to the size and use.

【０００４】ところで、成形品として内容量が例えば
２．７リットルにも及ぶような大型のボトル容器等にお
いては、容器の加飾としてその表面に印刷（スクリーン
印刷等）が施されるのが普通である。そして、このよう
な容器について印刷を行う場合には、インクとの親和性
を改善するためにその外表面に対してフレーム処理やプ
ラズマ処理等の前処理が施されるが、この場合、サイズ
の大きな成形品を搬送する長大な搬送ラインが必要であ
り、また、個々の成形品について、処理すべき面積が広
いため一つ当たりの前処理に長時間を要する不具合があ
り、この点がコストの削減を図るうえに大きな障害にも
なっている。Meanwhile, in the case of a large bottle container or the like having a content of, for example, 2.7 liters as a molded product, printing (screen printing or the like) is usually performed on the surface as decoration of the container. It is. When printing is performed on such a container, a pretreatment such as a flame treatment or a plasma treatment is performed on the outer surface thereof in order to improve affinity with the ink. A long transport line for transporting large molded products is required, and each molded product has a large area to be processed, so that there is a problem that it takes a long time to perform pre-processing for each product. This is also a major obstacle to reducing emissions.

【０００５】[0005]

【発明が解決しようとする課題】本発明の課題は、上記
のような従来の問題を解消できる新規なブロー成形用予
備成形体を提案するところにある。SUMMARY OF THE INVENTION An object of the present invention is to propose a novel preform for blow molding which can solve the above-mentioned conventional problems.

【０００６】[0006]

【課題を解決するための手段】本発明は、押出し成形、
インジェクション成形等の成形法によって作製された中
空管状の予備成形体であって、前記予備成形体は、その
胴部の少なくとも一部分に、印刷インクや塗料、接着材
等に対する親和性を改善する表面処理領域を有すること
を特徴とするブロー成形用予備成形体である。SUMMARY OF THE INVENTION The present invention is directed to an extrusion process,
A hollow tubular preform produced by a molding method such as injection molding, wherein the preform has a surface treatment for improving affinity for printing ink, paint, adhesive, and the like on at least a part of its body. It is a preform for blow molding characterized by having a region.

【０００７】表面処理は、フレームの接触によるもの
か、あるいはプラズマの照射によるものが好ましい。The surface treatment is preferably performed by contact with a frame or by plasma irradiation.

【０００８】[0008]

【発明の実施の形態】以下、図面を参照して本発明をよ
り具体的に説明する。図１は本発明に従う予備成形体の
側面を示したものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically with reference to the drawings. FIG. 1 shows a side view of a preform according to the invention.

【０００９】図示した予備成形体において１はフレーム
の接触あるいはプラズマの照射によって表面処理を施し
た領域、２はブロー成形後の成形品の胴部に相当する部
分、３はブロー成形後の成形品の口部に相当する部分で
ある。In the illustrated preformed body, 1 is a region subjected to surface treatment by contact with a frame or irradiation of plasma, 2 is a portion corresponding to a body portion of a molded product after blow molding, and 3 is a molded product after blow molding. This is a part corresponding to the mouth.

【００１０】図２は上掲図１に示した予備成形体を用い
て２軸延伸ブロー成形法等を適用して得たボトル型容器
である。予備成形体の領域１はインクとの親和性が改善
された領域であって、ブロー成形の後においてもそのま
まの状態が保持され、容器の胴部に直接印刷を施すこと
が可能であり、ブロー成形後の前処理工程は省略できる
ことになる。FIG. 2 shows a bottle-shaped container obtained by applying a biaxial stretch blow molding method or the like using the preformed body shown in FIG. 1 above. Area 1 of the preform is an area in which affinity with ink is improved, and is maintained as it is even after blow molding, and printing can be performed directly on the body of the container. The pretreatment step after molding can be omitted.

【００１１】予備成形体は成形品に比較してサイズが格
段に小さく、しかも、成形品の口部に相当する部分３で
保持して回転させながら処理ができるので、処理ライン
の短縮が可能であり、それにかかる時間も短くて済む。The preform is much smaller in size than the molded product, and can be processed while being rotated while being held at the portion 3 corresponding to the mouth of the molded product, so that the processing line can be shortened. Yes, it takes less time.

【００１２】予備成形体に対する前処理として行うフレ
ーム処理は、ポリエチレンやポリプロピレンのような化
学的に不活性な樹脂に火炎を接触させる処理であって、
これにより樹脂の表面層のポリマー分子が酸化されイン
クや接着剤等に対する親和性が改善される。火炎の接触
時間は成形品が軟化したり焦げたりすることのない極短
時間で行われる。The flame treatment performed as a pretreatment for the preform is a treatment in which a flame is brought into contact with a chemically inert resin such as polyethylene or polypropylene.
As a result, the polymer molecules in the surface layer of the resin are oxidized, and the affinity for ink, an adhesive or the like is improved. The flame is contacted for an extremely short time without the molded article softening or burning.

【００１３】また、プラズマ処理は、コロナ放電を続け
ている電極間に成形品を短時間置く処理をいうものとす
る。この処理においても樹脂の表面層が酸化されインク
や接着剤等に対する親和性が改善される。[0013] The plasma treatment refers to a treatment in which a molded product is placed for a short time between electrodes that continue corona discharge. Also in this treatment, the surface layer of the resin is oxidized, and the affinity for ink, an adhesive or the like is improved.

【００１４】予備成形体はペットボトルとして知られて
いるポリエチレンテレフタレートのような熱可塑性合成
樹脂を用いることができるが、本発明はこれにのみ限定
されるものではなく、サイズや用途等に応じて種々のも
のが適用できる。As the preform, a thermoplastic synthetic resin such as polyethylene terephthalate, which is known as a PET bottle, can be used. However, the present invention is not limited to this. Various things can be applied.

【００１５】表面処理に関しては、フレーム処理、プラ
ズマ処理について説明したが、印刷インクや塗料あるい
は接着剤等に対する親和性が改善することができるもの
であれば他の手法を採用することもできる。As for the surface treatment, the frame treatment and the plasma treatment have been described. However, any other method can be adopted as long as the affinity with the printing ink, paint, adhesive or the like can be improved.

【００１６】成形品に対する印刷は、印刷をすべき成形
品の種類に応じて適切なインクが選択される以外は紙に
対する印刷技術と大差はなく、印刷方式としては、フレ
キソグラフ印刷、シルクスクリーン印刷、グラビア印
刷、静電印刷、ホットスタンピングあるいはバイレプリ
ンティング等が適用される。Printing on a molded product is not much different from printing technology on paper, except that an appropriate ink is selected according to the type of the molded product to be printed. Flexographic printing, silk-screen printing are available as printing methods. , Gravure printing, electrostatic printing, hot stamping or bi-reprinting are applied.

【００１７】ポリエチレンテレフタレート樹脂からな
る、本発明に従う予備成形体を用いてブロー成形を行
い、得られた成形品に常法に従いスクリーン印刷を施し
印刷部分の密着性（剥離強度）について耐セロテープ試
験、耐クロスカットセロテープ試験、耐スクイズセロテ
ープ試験、耐水試験および耐落下試験を実施した。Blow molding is performed using the preformed body according to the present invention, which is made of polyethylene terephthalate resin. A cross-cut cellotape test, a squeeze cellotape test, a water resistance test, and a drop resistance test were performed.

【００１８】ここに、耐セロテープ試験は幅２４mmのセ
ロテープ（ニチバン）を貼着してこれを剥がしたときに
おける印刷部分のが剥離状況を把握するための試験であ
り、耐クロスカットセロテープ試験は、セロテープに約
１mmの間隔での１００個の枡目を形成したセロテープを
貼着して行うセロテープ試験であって、「剥離した枡目
数／全枡目数」で表示される。Here, the cellophane tape test is a test for grasping the peeling state of the printed portion when a cellophane tape (Nichiban) having a width of 24 mm is adhered and peeled off. This is a cellophane tape test in which cellophane tape having 100 cells formed at intervals of about 1 mm is adhered to cellophane tape, and is indicated by "number of peeled cells / total number of cells".

【００１９】また、耐スクイズセロテープ試験は、成形
品を５℃、２４時間放置したのち、印刷を施した領域に
つき、２０回のスクイズを行うセロテープ試験であり、
耐水試験は成形品の印刷を施した切片を室温で水道水に
２４時間浸漬させたのち、ガーゼによる摩擦を往復で２
０回行った場合における印刷部分の剥離状況を把握する
ための試験、さらに、落下試験は、成形品に水を規定量
充てんしたのちキャップによって密閉、５℃２４時間放
置し、高さ１ｍから正位でコンクリート上に落下させて
印刷部分が剥離する落下回数を確認する試験である。The squeeze-resistant cello-tape test is a cello-tape test in which a molded article is left at 5 ° C. for 24 hours and then squeezed 20 times in a printed area.
In the water resistance test, the printed section of the molded product was immersed in tap water at room temperature for 24 hours, and then friction with gauze was reciprocated for 2 hours.
A test for grasping the peeling state of the printed portion when performed 0 times, and a drop test, in which a molded product is filled with a specified amount of water, then sealed with a cap, left at 5 ° C for 24 hours, and left at a height of 1 m from the height of 1 m This is a test to confirm the number of drops at which the printed portion is peeled off by dropping it on concrete at a position.

【００２０】上記の試験を従来法に従い作製された成形
品（従来品）と同一条件のもとで実施したところ、本発
明に従う予備成形体を用いた成形品は、耐クロスカット
セロテープ試験については、従来品３１９／１６００
（４箇所／本、Ｎ（回数）＝４）に対し２４５／１６０
０であったものの、耐落下試験については、従来品１．
８回に対し２．８回であって、他の試験については、何
らの遜色がないことが確認された。When the above test was carried out under the same conditions as a molded article (conventional article) manufactured according to the conventional method, the molded article using the preformed article according to the present invention was found to have a cross-cut cellophore test. , Conventional product 319/1600
245/160 for (4 places / line, N (number of times) = 4)
Although it was 0, the drop resistance test of the conventional product 1.
It was 2.8 times for 8 times, and it was confirmed that there was no inferiority in other tests.

【００２１】[0021]

【発明の効果】本発明によれば、印刷や接着、めっき処
理につき、その親和性の高いブロー成形品を得ることが
できる。According to the present invention, it is possible to obtain a blow-molded product having high affinity for printing, bonding, and plating.

【００２２】成形品に加飾を施すに当たり前処理を必要
としないのでその分のラインを短縮でき、設備のコンパ
クト化、コストの軽減を図り得る。Since no pre-treatment is required to decorate the molded article, the line can be shortened, and the equipment can be made compact and the cost can be reduced.

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

【図１】 本発明に従う予備成形体の側面を示した図で
ある。FIG. 1 shows a side view of a preform according to the invention.

【図２】 図１に示した予備成形体を用いてブロー成形
して得た成形品である。FIG. 2 is a molded product obtained by blow molding using the preformed body shown in FIG.

【符号の説明】[Explanation of symbols]

１ 表面処理を施した領域 ２ 成形品の胴部に相当する部分 ３ 成形品の口部に相当する部分 1 Surface-treated area 2 Part corresponding to the trunk of molded article 3 Part corresponding to the mouth of molded article

フロントページの続き Ｆターム(参考） 4F201 AA25 AD32 AE10 AH55 BA03 BC02 BC21 BD06 BM05 BM06 BM12 BM20 4F208 LA08 LB01 LB19 LG14 LG22 LG28 LG33 LH24 LH30 LW37Continued on front page F term (reference) 4F201 AA25 AD32 AE10 AH55 BA03 BC02 BC21 BD06 BM05 BM06 BM12 BM20 4F208 LA08 LB01 LB19 LG14 LG22 LG28 LG33 LH24 LH30 LW37

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 押出し成形、インジェクション成形等に
よって作製された中空管状の予備成形体であって、 前記予備成形体は、その胴部の少なくとも一部分に、印
刷インクや塗料、接着材等に対する親和性を改善する表
面処理領域を有することを特徴とするブロー成形用予備
成形体。1. A hollow tubular preform made by extrusion molding, injection molding, or the like, wherein said preform has, at least in part of its body, an affinity for a printing ink, a paint, an adhesive, or the like. A preform for blow molding, characterized by having a surface treatment region for improving the preform. 【請求項２】 表面処理が、フレームの接触によるもの
である、請求項１記載のブロー成形用予備成形体。2. The preform for blow molding according to claim 1, wherein the surface treatment is performed by contact with a frame. 【請求項３】 表面処理が、プラズマの照射によるもの
である、請求項１記載のブロー成形用予備成形体。3. The preform for blow molding according to claim 1, wherein the surface treatment is performed by plasma irradiation.
JP2001046270A 2001-02-22 2001-02-22 Preliminary molding for blow molding Pending JP2002240135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001046270A JP2002240135A (en) 2001-02-22 2001-02-22 Preliminary molding for blow molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001046270A JP2002240135A (en) 2001-02-22 2001-02-22 Preliminary molding for blow molding

Publications (1)

Publication Number Publication Date
JP2002240135A true JP2002240135A (en) 2002-08-28

Family

ID=18907927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001046270A Pending JP2002240135A (en) 2001-02-22 2001-02-22 Preliminary molding for blow molding

Country Status (1)

Country Link
JP (1) JP2002240135A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016203430A (en) * 2015-04-17 2016-12-08 大日本印刷株式会社 Composite container and manufacturing method thereof, composite preform, plastic member, inner label member and label

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016203430A (en) * 2015-04-17 2016-12-08 大日本印刷株式会社 Composite container and manufacturing method thereof, composite preform, plastic member, inner label member and label

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