The Molten Plastic Viscometer
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Posted On :
Feb-07-2012
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Article Word Count :
809
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Invention aims - to further improve the device for measuring the viscosity of melts plastic so that it includes as few parts as possible can be used as widely as possible, and are cost effective and, in particular, that a quick and easy measurement of path switch can be changed .
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Invention aims - to further improve the device for measuring the viscosity of melts plastic so that it includes as few parts as possible can be used as widely as possible, and are cost effective and, in particular, that a quick and easy measurement of path switch can be changed . For this purpose, the device consists of a melt channel
he invention is related to the viscometer molten plastic.
Such devices are known, for example, in the laboratory. This measurement channel is milled into the surface of an expensive way. Cleaning milled step is very expensive and difficult. In addition, the milled extract actually may have only limited cross-section. Unlike the dimensions of the measurement channels require completely different viscometer.
DE 689 29 247 [U.S. Pat. No. 4,817,416] discloses a melt viscometer where the branches of plastic extruder, follow the path of measurement, promote cleaner, and pumped back into the extruder, yet pump. For this purpose, the measuring channel consists of two blocks, including the capillary plate as arranged. However, the instrumentation has many parts and built cheaper, and its performance is very elaborate with switching the capillary plate.
Object of the invention is to further improve the known viscometer so that it consists of several parts as possible can be used as widely as possible, and are cost effective and, in particular, can be replaced by a structure defined in the measurement channel for quick and easy.
These objects are achieved according to the invention, the molten plastic viscometer provided with a melting point of passage and the measurement channels that are formed between two flat parallel surfaces, including planar channel formed as an element formation by measuring the channel outlet, equipped with both the outgoing and return channel melt channel branches melt passage, measuring sensor at the end of the channel formation hole hole at least one element of the flat faces of the return pipes be less than the outgoing channel, the pump contains only the outgoing channel.
Given the fact that the machine has both the extract and measurement of the melt channel, they can be as close as possible to each other, the outgoing channel and in particular the return channel may be very short, so any pressure loss can be very small, and any change in pressure otherwise due to changes in viscosity can be kept negligibly low. With this construction, only one pump.
This is useful for the planar face of the housing is formed, which is divided into two parts on both sides of the melt passage body is divided into parallel faces of the housing parts of the planar faces joined regional interconnection channel forming element.
Given the fact that the machine is in a housing unit is very compact design possible, thus ensuring particularly good temperature control.
It has been well demonstrated that body parts are connected to each other through a hinge and spaced so that the channel forming element may be positioned between the flat faces. Opening one of the two parts of the house of one side of the housing part can be folded away from each other. Flat faces can be cleaned easily accessible and the channel forming element can be switched in a simple manner.
It is worth noting that housing form a round disk with, throughgoing central axis of the melt passage in the body is divided into two parts, the division of the tangent, and that the channel forming element is located between two housing parts. The best possible temperature control is assured of a round shape.
Preferably, as the channel forming element is disposable and metal foil. Contrary to the prior art as described above, after cleaning the capillary plate, a simple cost-sharing is made from foil, cleaning, which would be too difficult, and usually result in the measurement and sealing problems.
A particular advantage is that a variety of metal foil may have a nest covering a wide range. The exchange of channel forming element having a slot width with different widths in different materials, a very different viscosity slot can be handled in accordance with the invention of the machine without any problems.
Another option to change the channel cross-section measurement is that the various metal foils can be of varying thickness. To this end, the distance between the face plate can be adapted to the thickness of the channel forming elements.
It has been well demonstrated that the channel-forming elements, the metal foil has at least one centered on the formation of interacting with at least one piece centered on the fight with at least one of the housing parts. This ensures that the channel forming element is optimally located between the two housing parts, without any problems after the transfer and installation.
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Article Source :
http://www.articleseen.com/Article_The Molten Plastic Viscometer_145418.aspx
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Author Resource :
Visit viscometer.co for all types of viscometer according to your need.
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Keywords :
viscometer, digital viscometer,
Category :
Business
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Business
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