CN1242876C - 小型扁平容器的预成型件及小型扁平容器 - Google Patents
小型扁平容器的预成型件及小型扁平容器 Download PDFInfo
- Publication number
- CN1242876C CN1242876C CNB028127668A CN02812766A CN1242876C CN 1242876 C CN1242876 C CN 1242876C CN B028127668 A CNB028127668 A CN B028127668A CN 02812766 A CN02812766 A CN 02812766A CN 1242876 C CN1242876 C CN 1242876C
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- CN
- China
- Prior art keywords
- housing parts
- wall thickness
- flat container
- neck
- preformed member
- 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.)
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- 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
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- B29B11/08—Injection moulding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
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- Geometry (AREA)
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- Medical Preparation Storing Or Oral Administration Devices (AREA)
Abstract
一种小型的扁平容器的预成型件(1),由一个扁平的芯形成,其能够通过减小通过逐步增加形成的厚壁的壳体部分的外侧的壁厚,来调整壁厚的限制,其内径完全是小的圆形的,壳体部分(12)从颈部(11)和壳体部分(12)之间的边界向外突出以达到一个比颈部的直径大的直径,通过从台阶部分的下侧减小壁厚以提供壳体部分(12)的前后表面侧(12a)和左右表面侧(12b)之间的壁厚的差,使得壳体部分的外侧形成为一个椭圆形,而且,在颈部11的下侧,台阶突出的部分(14)设置成圆盘形状。
Description
技术领域
本发明涉及一种注射模制的预成型件,用于制造一种小型的扁平容器,该小型的扁平容器用于洗眼水或者化妆品,和一种由该预成型件制造的窄口的小型的扁平容器。
背景技术
当通过采用一个注塑模制预成型件,通过带有拉伸或者不带有拉伸的吹模,制造一种具有一个薄壁壳体部分的扁平容器时,预成型件的壳体部件的前后表面侧和左右表面侧之间的壁厚被调整,以提供壳体部分的不同的热容量。壁厚通过将壳体部分的外侧形成一个椭圆或者平行的平面来调整,或者通过采用一个扁平的型芯作为注射型芯来调整,并且因此使壳体部分的内侧相对的平面形成为平行的平面。但是,壳体部分的壁厚大多通过一个扁平的型芯来调整,因为壁厚能够容易地设定。
但是,对于用于洗眼水或者化妆品的窄口的小型的扁平容器来说,预成型件的内径也受到限制。因此,用于预成型件的注射型芯被限制到小的内径,因此将这样的注射型芯的两个侧面成成型为扁平的很困难,因为注射型芯具有双冷却通道。因为这个原因,一个通过借助于一个扁平的型芯调整预成型件的壳体部分的壁厚而制造的小型的扁平容器受到限制。
发明概述
本发明根据上述情况而作出的,其目的是提供一种新颖的预成型件,其能够制造一种窄口的薄壁的小型扁平容器,其厚度的分布被很好地调整,并且提供一种利用该预成型件制造的一种小型的扁平容器。该目的是通过消除由于扁平芯造成的在壁厚调整上的限制,通过提供一个壁厚差(热容量差),这对平滑模制是不可缺少的,并且通过防止将要被吹塑模制的扁平的壳体部分的壁厚在变平时出现偏移而实现的。
一种用于小型扁平容器的预成型件,其内部横截面完全是圆形的,并且限定成具有一个小的内径,其中一个壳体部分通过从壳体部分和颈部之间的边界突出台阶而形成,从而具有一个大于颈部直径的直径,壳体部分的外侧通过减小壁厚从台阶突出部分的下侧形成为一个椭圆形的形式,在所述壳体部分的前/后表面侧和左/右表面侧之间提供一个壁厚差,并且同时台阶突出部分被形成和保持为一个在颈部下面的圆盘形状。
通过吹塑模制上述预成型件而制造的一种窄口的小型扁平容器,其中该被制造的窄口的小型扁平容器具有一个在颈部下面的圆盘形状的台阶突出部分,以及紧随台阶突出部分的下边缘连续地平地形成的薄壁的壳体部分。
附图说明
图1(A)是本发明的用于小型扁平容器的预成型件的前视图,图1(B)是沿线X-X的预成型件的剖视图。
图2(A)是本发明的小型扁平容器的前视图,图2(B)是该容器的顶视图。
图3是一个预成型件的纵向剖视图,其一个吹塑模用双点划线示出。
图4是一个预成型件的纵向剖视图,其一个吹塑模用双点划线示出。
执行本发明的最佳方式
图1是本发明的用于小型扁平容器的预成型件1的前视图。预成型件1是一个有底的预成型件,通过注塑模制用一种聚酯树脂例如聚对苯二甲酸乙二醇酯(PET)、聚丙烯(PP)、酸碳酸酯(PC)或者聚乙烯(PE)一体地形成一个颈部11和一个壳体部分12。
预成型件1具有一个总高度30mm,其外径包括颈部11的一个螺纹11a,具有一个约为总高度的三分之一的高度8.8mm,并且其内径完全是圆形的。内径从颈部11的开口向着底部13稍稍减小,这是因为设定注射型芯的拖动,并且其开口处的直径限定在4.5mm。
而且,壳体部分12在与颈部11的边界处形成的厚壁台阶突出部分,其形成一个比颈部11大的直径,通过从台阶突出部分的下侧减小壁厚,以相对于完全是圆形的内侧形成壳体部分12的前/后侧12a的厚壁(2.6mm)和形成右/左侧12b逐渐减小的壁厚(2.0mm),使得壳体部分12的外侧形成为一个椭圆形。而且,通过使壁厚减小形成壳体部分的外侧,在颈部11的下侧,一个台阶出来的部分14设置成圆盘形状。
在此预成型件1中,可以根据该台阶出来部分自由地设定壳体部分12的壁厚。假设设定壁厚为最大的壁厚,并且使壳体部分的外侧形成为一个椭圆形或者平行的平面,该平面未示出,可以设置前/后侧12a与右/左侧12b的壁厚之间的差。因此,在颈部11的突出的平面中的壳体部分12的壁厚的调整不受限制,并且可以在超出颈部11的外侧直径的范围设置壁厚。因此,即使窄口的小型扁平容器,其内径被限制到一个小直径,也容易形成。
图2表示由预成型件1制造的用于洗眼水的一种窄口的小型扁平容器。该小型扁平容器2由颈部21和薄壁的壳体部分22构成,前者的周面上具有一个螺纹21a,一个圆盘形的台阶部24一体地形成在颈部21的下侧,通过延伸吹塑模制前/后侧22a而将薄壁壳体部分形成为扁平的,并且一个底部23形成在一个平的表面上,右/左侧22b如一个从颈部21的下边缘形成的圆弧形状。
通过在吹塑模3的扁平的腔室4中注塑模制以后释放模型,设定包括台阶部分14的壳体部分12是高温的预成型件1,在一个普通容器的延伸吹模的情况下,通过保持颈部11不变并且采用一个延伸杆并且吹空气,延伸吹塑使壳体部分12充满整个扁平的腔室中,可以容易地形成小型扁平容器2,虽然此操作未示出。在此情况下,如图3所示,优选设定预成型件1,使得壳体部分12的形成为厚壁的前/后侧12a和12a被定位在面向扁平的腔室4的小宽度模表面上,使得薄壁的右/左侧12b和12b面向大宽度模表面上,如图4所示。这是因为即使前/后侧12a和12a由于吹制膨胀的差接触模表面而过早地早一些冷却,厚壁的前/后侧12a和12a分别具有一个较大的热容量,并且足够大的热容量被保住使得预成型件在与模表面接触以后热得均匀,它们能够向右和向左膨胀。因此,薄壁的右/左侧12b和12b也平滑地膨胀,并且整个壳体部分形成一个扁平的壳体部分,具有一个均匀的壁厚。
此外,因为用圆盘形的台阶部14保住了足够大的热容量,该圆盘形的台阶部14形成在其与颈部11的边界,除了壳体部分12,部分12均匀地膨胀至紧随台阶部分14的下边缘的圆周。在传统的小型扁平容器的模制中,因为壳体部分12直接从颈部11的边界延伸并且膨胀,没有台阶,边界形成为弯曲的形状,并且易于变成长褶状的拖尾。因此,很难在颈部21和壳体部分22之间形成清晰的边界。但是,如图2(A)和2(B)所示,在本发明的小型扁平容器2中,得到了一个小型扁平鼓形的容器2,其形状很规则,因为颈部21从台阶突出部24升起,其肩部是完美的。
工业应用
本发明是根据上面的情况作出的。本发明的目的是提供一种新颖的预成型件,能够制造一个薄壁的窄口的小型扁平容器,并且厚度分布被很好地调整,并且提供一种采用该预成型件制造的小型扁平容器。该目的是通过消除由于扁平芯造成的在壁厚调整上的限制,通过提供一个壁厚差(热容量差),这对平模制是不可缺少的,并且通过防止壳体部分的壁厚在吹塑模制变平时出现偏差而实现的。
Claims (2)
1.一种用于小型扁平容器的预成型件,其内部横截面完全是圆形的,并且限定成具有一个小的内径,其中一个壳体部分通过从壳体部分和颈部之间的边界突出台阶而形成,从而具有一个大于颈部直径的直径,壳体部分的外侧通过减小壁厚从台阶突出部分的下侧形成为一个椭圆形的形式,在所述壳体部分的前/后表面侧和左/右表面侧之间提供一个壁厚差,并且同时台阶突出部分被形成和保持为一个在颈部下面的圆盘形状。
2.通过吹塑模制根据权利要求1的预成型件而制造的一种窄口的小型扁平容器,其中该被制造的窄口的小型扁平容器具有一个在颈部下面的圆盘形状的台阶突出部分,以及紧随台阶突出部分的下边缘连续地平地形成的薄壁的壳体部分。
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JP2001199511A JP4687855B2 (ja) | 2001-06-29 | 2001-06-29 | 小型偏平容器用プリフォーム及び小型偏平容器 |
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2001
- 2001-06-29 JP JP2001199511A patent/JP4687855B2/ja not_active Expired - Lifetime
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2002
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- 2002-06-18 US US10/481,740 patent/US7387825B2/en not_active Expired - Lifetime
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KR100853600B1 (ko) | 2008-08-22 |
EP1403028B1 (en) | 2009-07-29 |
CA2451545C (en) | 2009-11-10 |
US7387825B2 (en) | 2008-06-17 |
TW589248B (en) | 2004-06-01 |
MXPA03012007A (es) | 2004-03-26 |
CN1520351A (zh) | 2004-08-11 |
EP1403028A4 (en) | 2006-11-29 |
CA2451545A1 (en) | 2003-01-09 |
KR20040023635A (ko) | 2004-03-18 |
JP4687855B2 (ja) | 2011-05-25 |
JP2003011211A (ja) | 2003-01-15 |
EP1403028A1 (en) | 2004-03-31 |
WO2003002327A1 (fr) | 2003-01-09 |
ES2330621T3 (es) | 2009-12-14 |
US20040262321A1 (en) | 2004-12-30 |
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