CN1847101A - 双层壁纸杯 - Google Patents

双层壁纸杯 Download PDF

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CN1847101A
CN1847101A CNA2006100735323A CN200610073532A CN1847101A CN 1847101 A CN1847101 A CN 1847101A CN A2006100735323 A CNA2006100735323 A CN A2006100735323A CN 200610073532 A CN200610073532 A CN 200610073532A CN 1847101 A CN1847101 A CN 1847101A
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Abstract

介绍一种隔热的双层壁纸杯，它通过一上叠放止挡叠放。通过上叠放止挡的结构实现特别稳固的结构，它促使杯子很好地叠放和拆开。此外介绍一种用来制造这种杯子的方法。

Description

双层壁纸杯
技术领域
本发明涉及一种可叠放和可分开的双层壁纸杯，具有一内杯、一紧靠在内杯的杯口卷边下方的离内杯一定距离的外壳，和一装在外壳下端上的紧贴内壳的卷边。
背景技术
由欧洲专利1227042的现有技术已知一种这一类型的杯子。它介绍了一种隔热杯，它由两层锥形壁构成，其中内壁具有朝内的槽，该槽用来在一堆杯子的内部叠放一个同类的杯子。通过卷入产生的朝内的槽应该赋予杯子良好的叠放和拆开性能，而不致使许多叠放的杯子卡死。经验表明，直到约20个杯子为止叠放性能是令人满意的。如果叠放多得多的杯子，那么便同样出现卡死现象。这种卡死特别是通过从杯口朝向底部的轴向压力引起，而该轴向压力是在叠放的杯子数量很大时通过其自重引起。50个包装和叠放的杯子稍微的压缩便已经导致卡死。卡死的原因应该认为是槽的刚性不足，但是它用这种制造方法不可能改善，因为卷入导致材料削弱。
在欧洲专利EP 1227043中充分利用了那里所述的杯子更好的隔热性，在其他方面则具有和上述杯子一样的堆叠性能。
由专利申请JP2000-302132公开了可叠放的单层壁纸杯，它们在杯子的上部区域内通过夹紧实现了内纸杯在外纸杯内的叠放。这种夹紧造成，纸杯不能很好地拆开。此外单层结构造成差的隔热性。
发明内容
本发明的目的是，显著改善双层壁隔热杯的叠放和拆开性能。特别是和现有技术相比应该可以叠放多得多的纸杯，特别是如果大量叠放的纸杯突然受压缩时，或者如果以任何其他方式方法在叠放的纸杯上作用一大的轴向压力时，例如在装载杯库时可能出现这种情况，纸杯仍然不会卡死。
这个目的通过这样的方法实现，即在外壳上形成一凸肩形的叠放止挡，它配设于杯口卷边。
在不同类型的单层壁塑料杯方面已知(JP338 3698)，为外壳配备一叠放止挡，它在叠放时支承在上部的内边缘上。但是这里叠放止挡做成这样，使得在过高的压力时，特别是在突然受压缩时，出现叠放的杯在被叠放的杯上的卡死，因为在叠放止挡区域内力的分布在过高的轴向压力时导致叠放的杯子杯壁的向内偏移。
在本发明的杯子中叠放凸肩设置在外壳上，也就是说它不在杯口卷边所在的同一个外壳上，用这种方法可以实现两个优点。迄今为止所有可叠放的杯子都不具备这些优点，首先叠放止挡可以这样设置，使得叠放的杯子支承在被叠放的杯子的具有良好稳固性的部位，亦即杯口卷边上。其次可以通过叠放止挡的几何形状达到，叠放纸杯作用在被叠放纸杯杯口卷边上的力垂直地朝向杯口卷边表面。因此在可能作用在杯口上的轴向压力非常大时避免叠放纸杯外壳的偏移，从而得到非常稳固的结构。
可以制造不同结构形式的纸杯：体积小的纸杯的内杯不必具有内凸肩，因为用于小的杯口的杯口卷边在径向足够稳固。对于大纸杯建议设置内凸肩，以支承叠放止挡。通过设置内凸肩提高叠放止挡的径向稳固性。此外通过采用凸肩可以改变外壳的表面温度。内凸肩加大内杯和外壳之间的距离，从而进一步提高双层壁结构的隔热效果。此外卷边的止挡可以比较自由地选择。
为了经济地节省材料地制造纸杯卷边的止挡可以位于杯底上方几毫米处，而不改变叠放性能。如果要求纸杯有最大的稳固性，那么卷边的止挡应该正好位于杯底高度上。在这种结构形式时纸杯外观最漂亮，因此得到尽可能大的销量。
本发明还涉及一种用来制造这种纸杯的方法，为此在这里不必说明的前期工序中将外壳加工到这样的程度，使它具有一卷边。然后设置叠放止挡。这在一成形工位中进行，它包括纸杯下支承、杯子夹具和冲压机等组件。在设置叠放止挡后外壳被送到装配内杯并制造完工的工位。
附图说明
下面应该说明一些表示纸杯优点和特征的附图。
图1：可叠放的隔热纸杯的第一种结构的局部剖视图；
图2：四个叠放的纸杯；
图3：按图2的纸杯的区域X的放大图；
图4：按图2的区域X的放大图，但是其中在内杯内设置一凸肩；
图5：一纸杯，其中卷边设置在底面上方；
图6：一纸杯，其中卷边设置在底面高度上；
图7：外壳输送到设置叠放止挡的成形工位内；
图8：外壳安放在部分闭合的成形工位的杯子夹具内；
图9：外壳安放在闭合的成形工位的杯子夹具内，在进行叠放止挡冲压之前；
图10：闭合的冲压机，其中用箭头表示力在冲压爪上的分布；
图11：在叠放止挡成形后重新开启的冲压机，其中用箭头表示力在冲压爪上的分布；
图12：外壳配上内杯。
具体实施方式
按图1的局部纵向剖开表示的隔热纸杯包括一内杯1和一外壳2，内杯1包括一内壳31和一底面4。在内壳31上设置一杯口卷边3。纸杯的叠放通过凸肩形的叠放止挡5实现。外壳2在杯口区域内在杯口卷边3下方从外部通过上止挡7紧靠在内壳31上。在其下端上外壳2配备一向内卷入的卷边6。上止挡7、凸肩形叠放止挡5和一也许设置的上凸肩8的结构确定纸杯的叠放和隔热性能。
图2中表示四个叠放的按图1的纸杯。在这个图中标注了一个区域X，它在图3和4中以放大的比例画出。在图2中所选择的实施例中纸杯设有上凸肩8，因此这种形式的杯子的隔热性能与按图1的纸杯相比略差。特别是由装入的饮料的温度确定了纸杯的隔热程度，从而也确定了纸杯的几何形状。内杯的材料厚度取决于内杯和外壳之间的距离，外壳的材料厚度决定饮料和握杯子的手之间的温度下降。内壳和外壳纸板的面重量通常为每平方米几百克。在咖啡杯的情况下常常采用具有350g/m2的纸板，内杯的纸板是聚乙烯涂层纸板，其中涂层面重量通常在15至30g/m2范围内。内外壳之间的距离在杯子中间高度处约为1.2mm。因此通过在按图1的纸杯内装入温度为80℃的饮料外部温度可以达到60℃以下，从而即使在较长时间内也可以使纸杯没有烫痛感。如果浇入其温度接近水的沸点温度的饮料，那么按图2的纸杯可以提供足够好的隔热效果，只要凸肩8的直径突变达到约为1.2mm。
对于具有约400ml容积的大纸杯杯口27的直径(图2)将大到会削弱径向稳固性的程度。特别是在抓叠放的纸杯时如果在凸肩形的叠放止挡5上施加过大的力的话，那么它便可能变形到这样的程度，使得例如在中间压缩时各个杯子卡死。这个缺点通过一内凸肩8排除，它位于叠放凸肩区域内，这些凸肩虽然是由公开资料De 19840841A1已知的，但是它只是用来改善杯口普通的变形，并未得到特别好的叠放性能。
对于本发明的纸杯凸肩8具有这样的性能，即可以使上止挡7的区域稳固，从而提高凸肩形叠放止挡5的稳固性并降低叠放止挡5的变形能力。
图3表示本发明纸杯杰出的叠放和拆开性能。纸杯的叠放通过被叠放的纸杯的杯口卷边9，和叠放的纸杯的凸肩形叠放止挡5的接触点10达到。这时例如通过从上作用在叠放的纸杯上的压力引起的且在图3和4中用双箭头表示的轴向力F1拦截在叠放止挡5的接触点10和粘接在内壳31上的外壳2的上止挡7之间。因为叠放止挡5的接触点10上的力垂直对准杯口卷9，不产生朝内壳31方向的力，因此也不产生叠放的纸杯的外壳2朝内壳31方向的运动，并得到特别稳固的叠放结构。稳固性仅仅受被叠放的纸杯的杯口卷边和杯口卷边受外壳上止挡14的支承的负荷的限制。凸肩形叠放止挡径向稳定性的提高可以通过比较图3和4参照作用力F2看出。力F2通过双箭头的方向表示，并且应该作用在叠放止挡区域内。通过形成凸肩8形成一大的圆柱形区28至29，它减小凸肩形叠放止挡5的变形能力，因为它减小在29至30区域内外壳2的悬空面积。
图5和6表示卷边6的止挡的位置。为了经济地制造纸杯卷边的位置15可以设置在杯底上方几毫米处(图5)，从而完全可以实现节省20％的材料。如果需要大的稳固定，那么卷边的位置15应该设置在杯底的高度上(图6)，因为由此在抓杯子时力被杯底4接受。
在图7至12中借助于成形工位16的不同状态表示用来设置叠放止挡5的主要工步。成形工位16包括杯子夹具18，杯子下支承17和冲压机19，其中杯子下支承17在图7和12中未示出。
图7表示外壳输入成形工位16的杯子夹具18。外壳2已经具有下卷边6，它在前朝工序中已经设置好。一旦杯子夹具装上外壳，它便移动到杯子下支承17和冲压机19之间。这种状态表示在图8中。
为了设置凸肩形叠放止挡5将外壳2放入冲压机19内，为此杯子下支承17向冲压机19方向移动这么远，直至外壳2以其上边缘24撞上冲压机19的止挡25为止。然后成形工位便闭合，这种状态表示在图9中。
接着冲压机闭合。为此外滑块23，如图10中所示，向下移动，使它将卷边外夹爪21径向向内推动。同时扩张心轴20向下移动，从而径向向外推动卷边内夹爪22。这时通过卷边内夹爪22和卷边外夹爪21形成凸肩形的叠放止挡5。因此凸肩形的叠放止挡做成这样，如图3中所示，使得杯子受到内部的杯子支承26的支承，此杯子支承支承叠放止挡5下方的杯子锥体。在冲压机19闭合过程中卷边外夹爪21，卷边内夹爪22，扩张心轴20和外滑块23的运动方向通过箭头表示。
在图11中表示下一个工步，这里冲压机重新完全开启。为了更好地表示冲压机的开启过程，扩张心轴20，卷边外夹爪21，卷边内夹爪22和外滑块23在冲压机19开启过程中的运动方向通过箭头标注。此外通过箭头表示杯子下支承17在冲压机开启后立即进行的运动。
在成形工位16开启后杯子夹具18可以移动到下一个位置(图12)，在那里外壳2配上内杯1，用来最终制成纸杯的其他工步这里不必加以说明。

Claims (3)

1.可叠放和拆开的双层壁纸杯，具有一内杯(1)、一与内杯隔开的紧靠在内杯杯口卷边(3)下方的外壳(2)、一在外壳下端处紧贴在内杯上的卷边(6)，其特征为：在外壳上形成一凸肩形叠放止挡(5)，它配设于杯口卷边(3)。
2.按权利要求1的双层壁纸杯，其特征为：所述凸肩形叠放止挡(5)通过一内凸肩(8)稳固化。
3.用来制造按权利要求1和2的纸杯的方法，其特征为包括以下步骤：
-将上面已经设有卷边(6)的外杯输入包括一杯子下支承(17)、一杯子夹具(18)和一冲压机(19)的开启的成形工位(16)；
-闭合成形工位(16)；
-通过借助于扩张心轴(20)使卷边内夹爪(22)移出和借助于外滑块(23)使卷边外夹爪(21)移入压制凸肩形叠放止挡(5)；
-开启成形工位(16)；
-将外杯(2)输送到使它和内杯结合的工位，以最终制成双层壁纸杯。
CN2006100735323A 2005-04-12 2006-04-12 双层壁纸杯及其制造方法 Expired - Fee Related CN1847101B (zh)

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