CN1917997A - 整体把手pet容器系统 - Google Patents
整体把手pet容器系统 Download PDFInfo
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- CN1917997A CN1917997A CNA2004800354034A CN200480035403A CN1917997A CN 1917997 A CN1917997 A CN 1917997A CN A2004800354034 A CNA2004800354034 A CN A2004800354034A CN 200480035403 A CN200480035403 A CN 200480035403A CN 1917997 A CN1917997 A CN 1917997A
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Abstract
本发明公开一种用于容器的预成型坯,该预成型坯由可进行取向处理的塑料材料构成,并且使得作为结果物的吹塑容器将包括空心把手,所述预成型坯包括:模制结构,其具有颈部和该颈部下面的可延展部分;以及可进行取向处理的塑料材料的空心把手部分,其至少在第一端与所述预成型坯整体连接,当形成容器时,其构成所述把手,其中,所述空心把手部分的内表面与所述可延展部分的内表面形成为连续体。
Description
技术领域
本发明涉及一种预成型坯或半成品及其加工方法,具体地讲,涉及一种预成型坯,利用它可以双轴吹塑形成带有整体连接空心把手的容器。
背景技术
曾经尝试过如注塑-吹塑模制的容器那样将整体把手与PET结合,例如参照汤普森的US4,629,598,受让人为Tri-Tech SystemsInternational,Inc.。图1示出了可以被制造成US4,629,598的带有把手的瓶子的半成品或预成型坯。然而,迄今为止,这种方案的实用、批量生产的容器制造尝试尚未成功。作为替代,商用中看起来做得最好的是这样一种方案,即,在形成容器本身后的一个独立的制造阶段中,吹塑的容器在把手处承受夹具。例如参照WO82/02371和WO82/02370,二者的发明人都是汤普森。
本发明人在WO 96/33063A1、WO 99/12715A1、WO 99/30883A1和WO 00/26001A1中公开了带有整体实心把手的拉伸吹塑模制的容器,但把手不是在容器主体的拉伸吹塑成型过程中加入的。
注塑-拉伸-吹塑模制是预成型坯同时被沿轴向和径向拉伸的过程,结果形成双轴取向。双轴取向为容器提供了增强的抗拉强度(最大负载)、由更紧密的分子排列导致的更少的渗透作用、增强的落下冲击性能、透明度和更轻的重量。
此过程是唯一适于制造更大PET瓶的,无论是单层还是多层。包括整体把手的困难在于预成型坯的制造,特别是在空心把手的情况下,还在于吹塑模制操作之前对必要的不对称预成型坯的热处理准备。空心把手仍然是期望的,原因是可以减少所需材料量,并能获得更大的强度和改善的外形。
同样,由于实心把手不参与拉伸-吹塑模制过程,所以带有实心把手的预成型坯的加热准备过程是非常复杂和困难的,为了防止过热,需要复杂的屏蔽。
不是所有热塑性塑料都能进行取向处理。使用的主要热塑性塑料有聚对苯二甲酸乙二醇酯(PET)、聚丙烯腈(PAN)、聚氯乙烯(PVC)和聚丙烯(PP)。PET是到目前为止使用量最大的材料,其后是PVC、PP、和PAN。
热塑性范围大的无定形材料例如PET,比部分结晶型的材料例如PP,更容易拉伸-吹塑。实现最大的容器性能的大致熔化和拉伸温度为:
材料 熔化温度(℃) 拉伸温度(℃)
PET 280 107
PVC 180 120
PAN 210 120
PP 240 160
基本上有两种类型的拉伸-吹塑模制过程:
1)单级的,在同一台机器上制造预成型坯和吹塑瓶子,和
2)两级的,在一台机器上制造预成型坯,然后在另一台机器上吹塑。
单级设备能够处理PVC,PET,和PP。一旦形成半成品(无论是挤压成形还是注塑模制),它就通过温度调节站而达到适当的取向处理温度。单级系统允许在同一台机器上进行从原料到成品的过程,但是因为加工不能被轻易改变,此过程最适于专一的和小量的应用。
许多取向处理PET容器是在单级机器上制造的。预成型坯首先被注塑模制,然后被转移到温度调节站,再转移到吹塑模制操作处被拉伸吹塑成瓶子,最终到达排出站。
利用二级过程,可以优化预成型坯加工和吹瓶两者的处理参数。二级过程是制造取向处理PET容器的成本最低的方法。此方法提供预成型坯的注塑模制,然后运至吹塑模制处,允许公司成为预成型坯制造者并卖给吹塑模制制造者。因而希望进入取向处理PET容器市场的公司可以使他们的资本需求量变得最小。
制造者不必像在单级设备上那样要兼顾预成型坯设计和重量、生产率和瓶子质量。他可以制造或者购买预成型坯。而且如果他选择制造它们,他可以在适于他的市场的一个或多个地区这样做。高产机器和低产机器二者都可用。
本发明的一个目的是制造注塑-拉伸-吹塑模制的容器,此容器由可进行取向处理的塑料预成型坯制成,该预成型坯上结合了至少在一点与该预成型坯整体连接的空心把手。
发明内容
因此,根据本发明的第一技术方案,提供一种用于容器的预成型坯,其由可进行取向处理的塑料材料构成,并且使得作为结果物的吹塑容器将包括空心把手,所述预成型坯包括:模制结构,其具有颈部和该颈部下面的可延展部分;以及可进行取向处理的塑料材料的空心把手部分,其至少在第一端与所述预成型坯整体连接,当形成容器时,其构成所述把手,其中,所述空心把手部分的内表面与所述可延展部分的内表面形成为连续体。
根据本发明的第二技术方案,提供一种模制预成型坯的方法,所述预成型坯由颈部、大致圆柱形的可延展主体部分以及与所述可延展部分至少在一点整体连接的空心把手部分,该方法包含以下步骤:
(a)准备注塑模制模具,所述预成型坯的所述主体部分和所述把手部分的外形由所述注塑模具的彼此匹配的半模形成的模腔限定,
(b)准备用于插入所述模腔的主体形成心轴;所述心轴在外端设置有控制模块,
(c)设置从所述控制模块开始大致沿中心延伸穿过所述心轴的通道;所述通道对着所述至少一点弯曲,在所述心轴的侧面穿出,
(d)设置由所述控制模块控制的柔性把手心轴;所述柔性把手心轴用于插入穿过所述通道并进入所述模腔的所述把手部分。
优选地,所述柔性把手心轴是由抗热材料制成的可膨胀柔性管。
优选地,可膨胀柔性管的外端是密封的。
优选地,所述外端设置有从所述外端突出的实心端梢。
优选地,所述端梢为大致圆柱形,所述端梢的轴大致与所述可膨胀柔性管的轴对齐。
优选地,在形成所述空心把手部分时,所述端梢的直径限定空心把手部分的内径。
优选地,缆线从所述控制模块到所述端梢延伸穿过所述可膨胀柔性管。
优选地,所述控制模块用于延伸和拉回该可膨胀柔性管。
优选地,所述控制模块用于使所述可膨胀柔性管膨胀和缩小。
优选地,所述方法用于模制具有空心把手的预成型坯,所述把手在一点固定在所述主体部分上,所述方法还包含以下步骤:
(e)在所述模腔的所述把手部分外端设置第一注入浇道,
(f)使所述可膨胀柔性管膨胀,以完全填充所述模腔的所述把手部分,
(g)通过所述浇道注入可流动塑料材料来包围所述端梢,
(h)调整所述控制模块,以使所述可膨胀柔性管部分地收缩,
(i)调整所述控制模块,以与所述可流动塑料材料注入速率相匹配的速率从所述模腔的所述把手部分逐渐拉回所述可膨胀柔性管,
(j)在所述模腔的所述主体部分外端,通过第二注入浇道注入所述可流动塑料材料,
(k)通过两个浇道持续注入可流动塑料材料,直到所述端梢横跨所述把手部分和所述主体形成心轴之间的间隙,
(l)将所述可膨胀柔性管和所述端梢拉入所述主体形成心轴,
(m)持续注入可流动塑料材料来完全填充所述模腔。
优选地,所述方法用于模制带空心把手的预成型坯,所述把手在两点与所述主体连接;所述把手从第一连接点延伸至第二连接点,所述方法还包括以下步骤:
(n)对着所述第二连接点设置收容口,所述收容口用于将所述端梢收容在所述主体心轴内,
(o)通过所述模腔的所述把手部分插入所述可膨胀柔性管,以将所述管收容在收容口内,
(p)使所述可膨胀柔性管膨胀,
(q)通过位于所述模腔的所述主体部分外端处的注入浇道注入可流动塑料材料,
(r)持续注入所述可流动塑料材料,直到所述材料包围所述端梢,
(s)以与所述可流动材料的注入速率相匹配的速率逐渐拉回所述可膨胀柔性管,从而保持所述端梢被所述材料包围,
(t)当所述端梢在所述第一连接点处横跨所述把手部分和所述主体形成心轴之间的间隙时,中止拉回所述可膨胀柔性管,
(u)将所述可膨胀柔性管和所述端梢拉入所述主体形成心轴,
(v)持续注入可流动塑料材料来完全填充所述模腔。
根据本发明的另一个技术方案,提供一种容器的成型方法,该容器由塑料材料制成,其具有整体空心把手,该方法包括以下步骤:
(w)根据权利要求2至12任意一项所述的方法形成预成型坯,所述预成型坯具有颈部、颈部下面的可延展部分、以及空心把手部分,所述空心把手部分至少在所述第一端处与预成型坯整体连接,
(x)预热所述预成型坯以调节所述塑料材料,
(y)对所述预成型坯进行吹塑模制操作,使可延展部分和所述把手部分延展,以形成所述容器的主体和把手。
根据本发明的再一个技术方案,提供一种设置有空心把手的容器,所述把手在一点与所述容器整体连接,所述容器用根据权利要求2至11任意一项所述的方法形成的预成型坯通过拉伸-吹塑而形成,其中,所述把手的外端与该容器具有间隙而分离。
根据本发明的又一个技术方案为,提供一种设置有空心把手的容器,所述把手至少在一点与所述容器整体连接,所述容器用根据权利要求2至11任意一项所述的方法形成的预成型坯通过拉伸-吹塑而形成,其中,当由所述预成型坯拉伸-吹塑而形成所述容器时,所述把手的外端至少部分地与所述容器的一部分壁连接。
根据本发明的还一个技术方案,提供一种设置有空心把手的容器,所述把手在第一点和第二点处与所述容器整体连接,以允许使用者插入手指,所述容器用根据权利要求12所述的方法形成的预成型坯通过拉伸-吹塑模制而形成。
附图说明
以下参考附图,通过实施例来说明本发明的实施方式,其中:
图1A和1B是预成型坯和根据现有技术由该预成型坯吹塑的容器的正视图,
图2是典型注塑模具的示意图,该注塑模具用于制造图1所示的预成型坯,
图3是吹塑模制的PET容器的局部侧视图,此容器由使用本发明的一个实施方式的预成型坯形成,
图4是一个预成型坯的端视图和侧视图,该预成型坯用于吹塑模制图3中的容器,
图5是处于部分关闭状态的注塑模具结构的局部剖视图,该模具用于图4中的预成型坯,
图6是处于完全关闭状态的图5中的注塑模具的局部剖视图,
图7是处于第一操作阶段的图5和图6中的注塑模具内部结构的视图,该模具用于具有仅在一点固定的整体空心把手的容器,
图8是导入柔性心轴之后的图7的结构的细节图,
图9是图8中的柔性心轴的结构的细节图,
图10是处于注塑周期第一阶段的图8和9中的柔性心轴的细节图,
图11是注塑周期结束时预成型坯的视图,
图12是吹塑模制的容器的局部正视图,该容器具有整体固定在第一点的空心把手,该把手具有封闭的末端部分,
图13示出了用于吹塑模具图12中的容器的预成型坯的端视图和侧视图,
图14是应用于本发明处理过程的两级拉伸-吹塑模制机器的示意图,
图15示出了注塑周期开始时注塑模具的内部结构,该模具用于模制预成型坯,该预成型坯用于制造具有固定在两点的空心把手的容器,
图16示出了柔性心轴插入后的注塑周期第一阶段时的图15中的注塑模具,
图17示出了图15和16中的注塑模具,其中预成型坯处于部分模制阶段,
图18A示出了拉伸-吹塑模制模具的模腔,
图18B示出了在拉伸-吹塑模制周期之前图15-17的预成型坯在图18A的模腔中的位置,
图19A示出了吹塑阶段之前、对预成型坯的初始拉伸之后的图18B的预成型坯,
图19B示出了吹塑阶段结束时吹塑模腔内的容器。
具体实施方式
在此说明书中术语“整体连接”或“整体连接的”意为把手和预成型坯之间的连接(其后是由此预成型坯吹塑成的容器上的相应连接),其是用与把手和预成型坯相同的材料制成的,而且是作为把手和预成型坯的固有部分形成的,与此同时,预成型坯也形成了。
根据本发明的整体连接的空心把手可以有许多形式,包括整体连接在它们顶端的把手,就是说对着容器的颈部区域,或者连接在两点以形成环,第一个连接点对着颈部区域,第二点对着容器底部,这个环允许插入至少几个手指来提起容器。
制造预成型坯
传统上,对于PET容器,例如没有把手或者作为拉伸-吹塑模制随后制造阶段而附加把手的瓶子,预成型坯通常形式为伸长的空心圆柱,在它的下端封闭,并形成有颈部,以承受例如旋盖的封闭装置。因此,例如图1A和1B所示,颈部具有螺纹部分15和典型的挡环16。挡环16用于在拉伸-吹塑模制模具中对预成型坯进行定位。
注塑模制过程是常规的,其中预成型坯的外部形状由注塑模具的两个匹配半模形成的模腔限定,内部形状由心轴限定,模腔和心轴之间的空间限定预成型坯的壁厚和颈部的细节。熔化的PET被注入此空间,然后模具被打开,预成型坯排出心轴,然后预成型坯固化。图2中示出了PET瓶预成型坯的一个典型模腔20和心轴21,其表示了典型单一模腔注塑模具的一个半模22的一部分。
在预成型坯可以被拉伸-吹塑模制之前,必须进行加热调节,以使预成型坯的可塑性达到要求的状态。然后将该预成型坯放置在吹塑模制机器(没有显示)里并根据双轴取向吹塑模制技术进行吹塑模制,颈部15和挡环16以不延展的方式被保持在模具中。开始时,预成型坯的颈部下面的可延展部分可以向着模具的底部形成部分被机械地拉伸,紧接着通过使用压缩空气使预成型坯的体积向外被吹大,以形成与模腔内表面吻合的材料层。
图3示出了根据本发明实施方式的容器的上部。它包括颈部22、延展主体部分24和把手26。
颈部22具有螺纹部分25和定位环28。把手26在定位环28稍下处整体连接,并且从颈部区域向外延伸并向下弯曲。容器的延展主体部分的形状为这样:即,在把手区域,用来为手指提供空间30。容器把手和主体这样设置是为了使把手不突出到主体下部限定的包装的外边。
图4示出了用于制造图3中容器的预成型坯。从图4可以看出,如上所述的注塑模制对称容器的预成型坯的过程不适于结合有空心把手的预成型坯,该空心把手从该预成型坯的某部分突出,这是因为限定把手内部的心轴不能在预成型坯模制周期结束时从此预成型坯中抽出来的缘故。
预成型坯的第一优选实施方式-整体把手、单点连接
在参考图4的本发明优选实施方式中,准备具有整体连接的空心把手42的预成型坯40,该空心把手42从预成型坯的的颈部44下面的预成型坯一侧延伸出来。图5和图6示出了适于制造预成型坯的注塑模具,其包括滑块46、主体48、基座50、推块52和分离保持装置54以及心轴56。图5示出了处于部分关闭状态的模具而图6示出了处于关闭状态的模具。图7示出了半模的侧视图,其表示出用于形成心轴的主要部分60和空心把手部分62的模腔(为了表示清楚,在此省略滑块的细节)。
在制造带整体连接空心把手的预成型坯的过程中,心轴56,也就是形成预成型坯主体的内部形状的心轴(以下称为主心轴,图7示出了其剖视图),设置有内部通道64,与控制模块66连通。通道64部分地沿心轴的轴线延伸,然后向侧边弯曲,对着由预成型坯的把手部分的模腔62限定的把手的连接点68突出来。
在模具关闭之后、预成型坯注塑成型周期开始之前,柔性把手心轴管70通过通道64被插入主心轴56并进入预成型坯的把手部分62的模腔(参见图8)。把手心轴管70是可膨胀的气密管,其在外端72封闭,由相对刚硬但柔性的抗热材料制成。图9中示出了心轴的局部剖视图,内部缆线74从控制模块66(图7)到封闭的外端72贯穿柔性把手心轴管70的整个长度。缆线74是柔性的,但十分刚硬,足以帮助把手心轴管插入把手模腔。
把手心轴管可以在插入主心轴之前被部分膨胀,然后插入预成型坯模腔的把手部分,以给管额外刚性,从而通过通道的弯曲部分和把手模腔。
所述把手心轴管是这样形成的:即,当其完全膨胀时,被定位在模具的把手模腔中的部分与模腔形状和尺寸吻合,就是说,它完全填满图9所示的模腔。
如图9A的放大图所示,把手心轴管70的封闭外端72设置有突出的实心端梢76(以下简称为端梢),其具有大致圆柱形的主体和与希望的把手的空心相等的直径。缆线74连接在端梢76的内端。
在注塑成型周期开始之前,把手心轴管膨胀,以完全填充预成型坯模腔的把手部分。
对于通常的对称预成型坯,在预成型坯模腔60的端部80上,有单独的注入点或浇道78。然而对于本优选实施方式的预成型坯的制造而言,在模腔的把手部分的外端72设置第二注入浇道82。在模制周期中控制通过每个浇道的PET注入。
控制模块66(图7)设置有用于拉回与把手心轴管的端梢76连接的缆线74的控制装置(没有显示)。控制模块被进一步装备以从模腔的把手部分逐渐拉回把手心轴管70。参考图10,当PET通过把手端梢浇道82进入时,缆线74被控制模块拉紧以将端梢76从把手模腔62的外端72拉出。现在假定把手心轴管管末端以图10中显示的形式部分内部塌陷,即保持端梢76位于把手模腔中央并允许PET环绕此端梢流动。
加热模腔但不加热端梢,以使PET继续沿着把手模腔壁流动,但在端梢邻近“离开”,从而确保通过拉回端梢76以形成空心通道。
继续此过程,同时端梢继续在把手中央形成空心通道,直到注入的PET已经完全形成了此预成型坯的把手部分。同时通过预成型坯主浇道注入的PET已经到达了把手和预成型坯主体的结合处。当端梢到达主心轴和把手入口之间的间隙时,它被暂时停止,以使形成预成型坯主壁PET来封闭此端梢,确保预成型坯主要部分的内部和连接把手之间的开口。然后如图11所示,此端梢和把手心轴管被完全拉回,或者至少拉回到主心轴中,而且继续进行PET注入,以填充预成型坯的颈部其余部分。
把手末端可以有很多形式,取决于在最终形成吹塑容器时希望的把手布置。把手可以是“不受约束的”,即如图3所示,把手末端和容器主体之间有间隙,或者如图12所示,也可以通过吹塑模制过程在末端将把手“捕获”,以使末端在容器被吹塑成最终形状时被容器主体在某种程度上封闭。在把手26的后者形式中,尽管在外端72处不是严格地完整,但却固定在容器的主体24上,并被容器的主体24支撑。
如图13所示,为确保这样的固定,当被容器主体的材料部分封闭时,预成型坯上形成的把手末端可以设置有用于增加把手末端杠杆作用的成形部分。这样的末端部分适于与容器的吹塑部分机械地接合,容器的壁部用于封闭把手末端。可替代地或额外地,可以使用化学试剂作为粘合剂来在把手末端和容器的吹塑体之间形成粘合。
用第一实施方式的预成型坯来进行容器的拉伸-吹塑模制
无论所采用的系统是单级还是两级的,预成型坯的各个部分必须在插入吹塑模具之前被调节温度。
图14示出了用于二级处理的改进的二级拉伸-吹塑模制机器110,其适于拉伸-吹塑模制根据本发明的任意一个优选实施方式的预成型坯。
机器110包含第一圆盘传送装置111,用于从斜槽113接收整体空心把手预成型坯112进入围绕外周间隔的缝隙114。
当第一圆盘传送装置111旋转移动时,预成型坯112通过缝隙114从斜槽113到达第二圆盘传送装置116装载位置,在这里预成型坯112被倒转并传送到安装在第二圆盘传送装置116外周附近的轴115。
第二圆盘传送装置的大约270°的扇形区被用作预热扇形区117,在此预成型坯112被加热层逐步加热,此加热层被安装在与预成型坯经过的路径相反侧。
被适当地预热的预成型坯112被连续地加载进入第三圆盘传送装置120的缝隙119,第三圆盘传送装置120被用作传输机构,以适当地调整预成型坯112的纵轴相对于把手位置的方向,并且将预成型坯112送到包含第一半模122和第二半模123的模腔121。
模腔121被装在第四圆盘传送装置126的外周。半模122、123之间形成大约270°的扇形,当半模122、123围绕铰链轴127旋转到关闭位置时被关闭,封闭在其中的预成型坯112如上所述被吹塑并被双轴拉伸来制造整体把手和吹塑容器125。当半模打开准备接收新的、预热过的预成型坯112时,容器125如图所示出的那样被排出。
典型地,当预成型坯以倒转的位置并且轴向垂直地通过加热扇形时,它被旋转以使它的每个部分都被均匀加热。包括颈部和定位环的预成型坯的非延展部分,通过适当防护措施而与预热(或在单级机器上重新加热)过程充分地隔离。
此外,具有突出的把手部分的预成型坯的不对称性需要特别小心,以确保在旋转过程中靠近热源的把手部分不过热。这可以通过提供部分屏蔽遮盖来实现,例如,允许足够热量到达把手内部对面的预成型坯的主体部分,同时保护把手不过热。
预成型坯的第二优选实施方式-整体把手、两点连接
在本发明第二优选实施方式中,如图15所示,预成型坯的把手在朝着颈部区域的第一上连接点和第二连接点处与预成型坯的主体连接,以形成环86。制造此第二实施方式的预成型坯的过程与已经描述的第一实施方式相似,预成型坯的空心把手是通过使用具有通道形成端梢的柔性可膨胀管形成的。
然而,在此实施方式中,主心轴56对着第二连接点(就是离容器颈部最远的连接点)设置有收容口88。如图16所示,当柔性把手心轴70的实心端梢76穿过把手模腔62的时候,收容口88用于接受它。
在将柔性把手心轴插入把手模腔和将端梢套入收容口之后,开始注入PET。如图17所示,注入次序首先确保PET通过主要注入浇道78,完成越过了二把手连接点90的预成型坯主体的形成,从而允许端梢76确保预成型坯主要部分和把手之间的开口。如上所述,把手心轴管70和端梢76现在可以逐渐拉回,来形成空心把手。端梢76的拉回在第一连接点68的位置时被暂时中止,以允许PET在第一连接点处环绕此端梢流动,从而确保预成型坯主要部分和把手之间的开口。
用第二实施方式的预成型坯拉伸-吹塑模制容器
预成型坯的吹塑模制过程大体上与第一实施方式相同。然而本实施方式需要为拉伸空心把手的两个连接点之间的预成型坯主体提供两个连接点。
这是因为如下缘故:即,如前面间接提到过的,从比容器的深度短得多的预成型坯吹塑模制容器的过程要求在注入压缩空气之前将预成型坯纵向拉伸。
从图18A到19B可以看到,预成型坯130在它开始进入图18B的吹塑模制模具132之后,被插入的拉伸杆138机械地拉伸,以使预成型坯130的端梢140靠近模腔的基部142。这个拉伸过程必须与两个连接点之间的预成型坯主要部分和把手部分本身的按比例拉伸同步。
这是通过在模具中设置部件134和136来实现的,部件134和136限定了把手和预成型坯主体之间的空间。这些部件134和136中的第二个与拉伸设备机械地连接,以使该部件以某速率向模腔底部滑动,该部件的滑动距离与预成型坯主要部分的拉伸设备的滑动距离成比例。这样,把手连接点之间的预成型坯主体的预成型坯壁部分被拉伸,以与预成型坯壁的剩余周围部分的拉伸在该处吻合。一旦完成拉伸,就注入空气,从而完成容器的双轴拉伸-吹塑模制。
Claims (16)
1.一种用于容器的预成型坯,
其由可进行取向处理的塑料材料构成,并且使得作为结果物的吹塑容器将包括空心把手,
所述预成型坯包括:模制结构,其具有颈部和该颈部下面的可延展部分;以及可进行取向处理的塑料材料的空心把手部分,其至少在第一端与所述预成型坯整体连接,当形成容器时,其构成所述把手,
其中,所述空心把手部分的内表面与所述可延展部分的内表面形成为连续体。
2.一种模制预成型坯的方法,所述预成型坯由颈部、大致圆柱形的可延展主体部分以及与所述可延展部分至少在一点整体连接的空心把手部分,该方法包含以下步骤:
(a)准备注塑模制模具,所述预成型坯的所述主体部分和所述把手部分的外形由所述注塑模具的彼此匹配的半模形成的模腔限定,
(b)准备用于插入所述模腔的主体形成心轴;所述心轴在外端设置有控制模块,
(c)设置从所述控制模块开始大致沿中心延伸穿过所述心轴的通道;所述通道对着所述至少一点弯曲,在所述心轴的侧面穿出,
(d)设置由所述控制模块控制的柔性把手心轴;所述心轴用于插入穿过所述通道并进入所述模腔的所述把手部分。
3.根据权利要求2所述的方法,所述柔性把手心轴是由抗热材料制成的可膨胀柔性管。
4.根据权利要求2或3所述的方法,所述可膨胀柔性管的外端是密封的。
5.根据权利要求4所述的方法,所述外端设置有从所述外端突出的实心端梢。
6.根据权利要求5所述的方法,所述端梢为大致圆柱形,所述端梢的轴大致与所述可膨胀柔性管的轴对齐。
7.根据权利要求5或6所述的方法,在形成所述空心把手时,所述端梢的直径限定空心把手的内径。
8.根据权利要求3至7任意一项所述的方法,缆线从所述控制模块到所述端梢延伸穿过所述可膨胀柔性管。
9.根据权利要求3至8任意一项所述的方法,所述控制模块用于延伸和拉回所述可膨胀柔性管。
10.根据权利要求3至9任意一项所述的方法,所述控制模块用于使所述可膨胀柔性管膨胀和缩小。
11.根据权利要求5至10任意一项所述的方法,所述方法用于模制具有空心把手的预成型坯,所述把手在一点固定在所述主体部分上,所述方法还包含以下步骤:
(a)在所述模腔的所述把手部分外端设置第一注入浇道,
(b)使所述可膨胀柔性管膨胀,以完全填充所述模腔的所述把手部分,
(c)通过所述浇道注入可流动塑料材料来包围所述端梢,
(d)调整所述控制模块,以使所述可膨胀柔性管部分地收缩,
(e)调整所述控制模块,以与所述可流动塑料材料注入速率相匹配的速率从所述模腔的所述把手部分逐渐拉回所述可膨胀柔性管,
(f)在所述模腔的所述主体部分外端,通过第二注入浇道注入所述可流动塑料材料,
(g)通过两个浇道持续注入可流动塑料材料,直到所述端梢横跨所述把手部分和所述主体形成心轴之间的间隙,
(h)将所述可膨胀柔性管和所述端梢拉入所述主体形成心轴,
(i)持续注入可流动塑料材料来完全填充所述模腔。
12.根据权利要求5至10任意一项所述的方法,所述方法用于模制带空心把手的预成型坯,所述把手在两点与所述主体部分连接;所述把手从第一连接点延伸至第二连接点,所述方法还包括以下步骤:
(a)对着所述第二连接点设置收容口,所述收容口用于将所述端梢收容在所述主体心轴内,
(b)通过所述模腔的所述把手部分插入所述可膨胀柔性管,以将所述可膨胀柔性管收容在收容口内,
(c)使所述可膨胀柔性管膨胀,
(d)通过位于所述模腔的所述主体部分外端处的注入浇道注入可流动塑料材料,
(e)持续注入所述可流动塑料材料,直到所述材料包围所述端梢,
(f)以与所述可流动材料的注入速率相匹配的速率逐渐拉回所述可膨胀柔性管,从而保持所述端梢被所述材料包围,
(g)当所述端梢在所述第一连接点处横跨所述把手部分和所述主体形成心轴之间的间隙时,中止拉回所述可膨胀柔性管,
(h)将所述可膨胀柔性管和所述端梢拉入所述主体形成心轴,
(i)持续注入可流动塑料材料来完全填充所述模腔。
13.一种容器的成型方法,该容器由塑料材料制成,其具有整体空心把手,该方法包括以下步骤:
(a)根据权利要求2至12任意一项所述方法形成预成型坯,所述预成型坯具有颈部、颈部下面的可延展部分、以及空心把手部分,所述空心把手部分至少在所述第一端处与所述预成型坯整体连接,
(b)预热所述预成型坯以调节所述塑料材料,
(c)对所述预成型坯进行吹塑模制操作,使所述可延展部分和所述把手部分延展,以形成所述容器的主体和把手。
14.一种设置有空心把手的容器,所述把手在一点与所述容器整体连接,所述容器用根据权利要求2至11任意一项所述的方法形成的预成型坯通过拉伸-吹塑而形成,
其中,所述把手的外端与所述容器具有间隙而分离。
15.一种设置有空心把手的容器,所述把手至少在一点与所述容器整体连接,所述容器用根据权利要求2至11任意一项所述方法形成的预成型坯通过拉伸-吹塑而形成,
其中,当由所述预成型坯拉伸-吹塑而形成所述容器时,所述把手的外端至少部分地与所述容器的一部分壁连接。
16.一种设置有空心把手的容器,所述把手在第一点和第二点处与所述容器整体连接,以允许使用者插入手指,所述容器用根据权利要求12所述的方法形成的预成型坯通过拉伸-吹塑模制而形成。
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AU2003905983A AU2003905983A0 (en) | 2003-10-30 | Improved PET Container | |
AU2003905983 | 2003-10-30 |
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TWI769740B (zh) * | 2021-03-15 | 2022-07-01 | 銓寶工業股份有限公司 | 製造瓶體的吹塑成型機以及把手瓶的吹塑成型方法 |
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KR101514347B1 (ko) * | 2006-03-09 | 2015-04-22 | 상그레일 아시아 피티와 엘티디 | Pet 취입 성형기 |
DE102007001318A1 (de) * | 2007-01-02 | 2008-07-03 | Henkel Kgaa | Flasche mit verbesserter Befüllungs- und Entnahmecharakteristik |
US9420877B2 (en) | 2011-11-22 | 2016-08-23 | The Procter & Gamble Company | Method for producing a toothbrush having an inner cavity |
US9756931B2 (en) | 2011-11-22 | 2017-09-12 | The Procter & Gamble Company | Method for producing a toothbrush having an inner cavity |
US9463593B2 (en) * | 2011-11-22 | 2016-10-11 | The Procter & Gamble Company | Method for producing a toothbrush having an inner cavity |
US9510664B2 (en) | 2011-11-22 | 2016-12-06 | The Procter & Gamble Co | Toothbrush having an inner cavity |
AU2012356292B2 (en) * | 2011-12-24 | 2016-05-05 | Integrated Plastics Pty Limited | In-mould handle movement mechanism |
EP2644345B1 (fr) | 2012-03-28 | 2015-03-25 | Incoplas Services | Préforme pour la confection d'un récipient en matière plastique avec poignée intégrée ainsi que méthode de réalisation d'un tel récipient |
EP2823949A1 (de) | 2013-07-08 | 2015-01-14 | ISP Technology AG | Kunststoffverbindungsnaht, Kunststoffflasche mit Verbindungsnaht und Verfahren zu deren Herstellung |
US9132582B2 (en) * | 2013-09-18 | 2015-09-15 | Sung Kyu Park | Apparatus and method for manufacturing transparent synthetic resin vessel with integrated handle |
US9505163B2 (en) * | 2014-01-21 | 2016-11-29 | Dt Inventions, Llc | Manufacturing method and device for a container with an integral handle |
GB2548077A (en) * | 2016-02-08 | 2017-09-13 | Ipet Tech Ltd | Moulding of plastic containers with handles |
USD952463S1 (en) * | 2019-12-16 | 2022-05-24 | Mark Oleynik | Container handle |
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US4038006A (en) * | 1974-06-04 | 1977-07-26 | Farrell Patent Company | Apparatus for making a blow molded container with hollow handle and method of making |
US3928522A (en) * | 1974-06-04 | 1975-12-23 | Farrell Patent Co | Method of making a blow molded container with hollow handle |
JPS5278969A (en) * | 1975-12-23 | 1977-07-02 | Farrell Plastic Mach | Injection molding method and device |
JPS5597930A (en) * | 1979-01-18 | 1980-07-25 | Yoshino Kogyosho Co Ltd | Molding method of synthetic resin bottle with ear |
JP2627944B2 (ja) * | 1988-11-25 | 1997-07-09 | 大日本印刷株式会社 | 口栓部が傾斜した延伸ブロー成形壜体の製造方法及び装置 |
KR20010023826A (ko) * | 1997-09-09 | 2001-03-26 | 빌텍 피티와이 엘티디 | 일체 손잡이, 예비성형물을 함유하는 용기 및 이의 제조방법 |
WO2003011560A1 (en) * | 2001-08-03 | 2003-02-13 | Jan Petrus Human | Production of hollow articles |
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- 2004-10-22 CA CA 2544081 patent/CA2544081A1/en not_active Abandoned
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WO2005042230A1 (en) | 2005-05-12 |
EP1684965A1 (en) | 2006-08-02 |
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