Flexible hopper for filling functional liquids e.g. vehicle engine oil, has thin cover with upper layers and two opposed surfaces that are bonded together, so that layers and opposed surfaces are guided by portion of through holes
摘要
<p>The hopper has manually deformable thin layer (20) comprising two opposing surfaces (201) and several through holes (202). The through holes are formed uniformly throughout manually deformable thin film. The thin film has certain shape memory that is produced in specific form after molding. Two upper layers (22) and two opposed surfaces of thin cover are bonded together, so that upper layers and opposed surfaces are guided by portion of through holes.</p>
