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Plant for treatment of polymeric materials

A technology of equipment and plastic materials, applied in the field of equipment for converting plastic materials

Pending Publication Date: 2021-09-28
佩加索实业股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, the Applicant has observed that the color variability of the final product tends to remain high and, therefore, operators often need to manually intervene in the adjustment of the metering pumps to increase or decrease the flow rate of additives supplied to the polymeric material

Method used

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  • Plant for treatment of polymeric materials

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Effect test

Embodiment Construction

[0046] In the figures, 100 generally denotes a plastics material conversion plant realized according to the invention.

[0047] In this preferred example, the conversion plant 100 is a molding or extrusion plant for polymeric material in the form of polyethylene terephthalate (PET) pellets for the production of bottle preforms.

[0048] However, the invention can be similarly used in molding or extrusion equipment supplied with any other thermoplastic polymer material, such as polypropylene, polyethylene, polyvinyl chloride, polyamide, etc., for example.

[0049] Transformation equipment 100 includes:

[0050] - converting machines 10, such as extruders,

[0051] - a feed hopper 13 which is positioned upstream of the conversion machine 10 and in which is stored polymer material ready for conversion and which is arranged for the conversion of granules of plastic material supplied to the conversion machine 10, and

[0052] - A metering device 1 for a liquid additive arranged ...

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Abstract

A plastics material transformation plant (100) comprises a transformation machine (10) for the plastics material by means of moulding or extrusion, a feeding hopper (13) which is positioned upstream of the transformation machine and a metering device (1) which is arranged to add a liquid additive to the transformation machine. The metering device (1) comprises a container (4) in which the liquid additive is contained, a metering pump (5) which is connected to the container in order to take the liquid additive and to supply it to the transformation machine (10), and a thermo-regulation system of the liquid additive which is arranged to maintain the temperature of the liquid additive in a range of 2 DEG C more or 2 DEG C less than a predetermined temperature value.

Description

technical field [0001] The invention relates to a plant for converting plastic material provided with a converting machine, a hopper for supplying the plastic material to the converting machine and means for metering a liquid additive of the plastic material supplied to the converting machine. Background technique [0002] The most well known and widely used techniques for converting plastic materials include extrusion and molding. Molding techniques may be applied in one of various forms such as, for example, injection molding, compression molding, injection blow molding or extrusion blow molding. [0003] Molding techniques in their various forms introduce polymeric material in a molten or semi-molten state into a mold whose cavity reproduces the shape of the desired object such that the polymeric material, once formed into a solid state, forms the desired object shape. [0004] Likewise, extrusion techniques pass polymeric material in a molten or semi-molten state throu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B7/82B29B7/28B29B7/72B29B7/94B29C48/29B29B7/24B29B7/60
CPCB29B7/24B29B7/60B29B7/94B29B7/726B29B7/826B29B7/823B29B7/286B29C48/29B29C48/92B29C2948/92704B29C48/286B29C48/793B29C2948/92209B29C2948/92333B29C2948/926B29C2948/92828B29K2105/0032
Inventor 里纳尔多·皮瓦
Owner 佩加索实业股份公司