Apparatus and method for compressing plastic containers while avoiding stress whitening
A technology for containers and plastic materials, applied in the direction of presses, plastic recycling, applications, etc., can solve the problems that containers are difficult to stamp and separate structures
Active Publication Date: 2016-06-15
克隆尼斯股份有限公司
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- Description
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Problems solved by technology
Due to shrinkage, the folds will also be greatly strained when individually stamped, making it difficult to separate the rolled container from the stamped structure
Method used
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Embodiment Construction
[0052] figure 1 A diagram showing a method for producing a compressed container. The method initially starts with a plastic preform 5 converted by a converting mechanism, such as a stretch blow molding machine, to form a container 10 . In a next step of the method, the converted container is compressed, in particular by means of the device according to the invention, in such a way that the mouth region of the plastic container is pushed towards the base region of the plastic container. Reference 10a designates the first zone of the compressed container, which is the zone that also includes the mouth of the container. Reference 10b designates a second region of the compressed container, here the base region.
[0053] In the next step of the method, a cap or closure structure 42 is placed over the mouth. A number of these compressed containers are then brought together to form the pallet 50 .
[0054] figure 2 A diagram showing a device for compressing containers according...
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An apparatus (1) for compressing plastic containers (10), having a first retaining device (2), which is suitable for retaining a first region (10a) of a container (10) which is to be emptied, having a second retaining device (4), which is suitable for retaining and / or for supporting a second region (10b) of the container (10) which is to be emptied, the second region (10b) being spaced apart from the first region (10a), and having a movement device (17, 19), which is suitable for moving the first retaining device (2) in the direction of the second retaining device (4), in order to compress the container (10) located between the first retaining device (2) and the second retaining device (4), wherein the first retaining device (2) has a cross section which is preferably smaller than a cross section of the container which is to be compressed, and therefore it is possible for the first retaining device to be introduced, with the first region (10a) of the container retained by the first retaining device (2), into a further portion of the container (10) to form an encircling folding location (10c), as seen in a longitudinal direction (Y) of the container (10). According to the invention, the first retaining device (2) has provided in it a stop element (22), which makes contact with the folding location (10c) at a predetermined position of the first retaining device (2) relative to the second retaining device (4), and / or the apparatus (1) has a pressure-generating device (82), by means of which an interior of the container which is to be compressed is subjected, at least at certain times during the compressing operation, to an internal pressure which is above the external pressure in the area around the container (10).
Description
technical field [0001] The invention relates to a device and a method for compressing plastics material containers. Such devices and methods are well known in the beverage production industry. They are commonly used to compress filled containers such that liquid is forced out of said container. However, the applicant recently ported it to another method. Especially when producing large containers, it occurs that very large volumes and / or weights of material have to be transported during transport. The applicant has therefore proposed, in a hitherto unpublished patent application, the idea of firstly manufacturing containers of plastic material by, for example, blow molding operations, then compressing these containers in the empty state, loading the compressed containers on pallets, and placing these The pallets are delivered to the bottling plant. The latter can then expand the container and fill it with liquid, wherein the filling operation itself can also expand the c...
Claims
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IPC IPC(8): B29C69/02B30B9/32B65D1/02
CPCB29L2031/7158B29C69/025B29L2031/7002B29B17/04B30B9/321Y02W30/62B29C49/4273B30B15/34
Inventor 约亨·克鲁格
Owner 克隆尼斯股份有限公司