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Triple parison coextrusion multi-layer flowhead apparatus

A technology of fluid and fluid communication, which is applied in the fields of three-parison, co-extrusion, and multi-layer fluid head devices

Inactive Publication Date: 2015-11-18
GRAHAM PACKAGING CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Based on the size and shape of the container to be formed, due to the geometry of the mold and the limitations of the fluid head itself, traditional fluid head designs only provide the use of single fluid head or dual fluid head configurations
Therefore, only a single parison or two parisons can be produced simultaneously on a given machine

Method used

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  • Triple parison coextrusion multi-layer flowhead apparatus
  • Triple parison coextrusion multi-layer flowhead apparatus
  • Triple parison coextrusion multi-layer flowhead apparatus

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Embodiment Construction

[0024] The present invention provides a three-parison "coex" or co-extrusion fluid head assembly for producing three multi-layer parisons with a larger than conventional fluid head between the three parison fluid heads. Center-to-center distance of 90mm Small center-to-center distance. By selecting a set of rings each with the designed size and shape to ensure the best flow rate, three multilayer parisons can be coextruded simultaneously and still fit within the constraints and geometry of the molding apparatus .

[0025] Referring now to the drawings (like reference numerals refer to like elements throughout the various figures), the present invention provides a triple parison fluid for the simultaneous production of three multilayer parisons 140, 240, 340 head unit 1. refer to figure 1 , the three-parison fluid head device 1 includes a first parison fluid head 100 , a second parison fluid head 200 and a third parison fluid head 300 .

[0026] Such as figure 1 As shown, ...

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Abstract

A triple parison flowhead apparatus for producing three multi-layer parisons simultaneously. The triple parison flowhead includes a first parison flowhead, a second parison flowhead, and a third parison flowhead substantially abutted to one another. Each flowhead includes a plurality of rings having flow passages, defining a center axis, and having an annular flow conduit in fluid communication with the flow passages and a plurality of ports. A set of mold plattens having a width is located adjacent to the first, second, and third parison flowheads. The flow passages in each ring are defined by a height and a diameter of each ring, and a combination of the width of the mold plattens and the flow passages minimizes the center-to-center distances between the three parison flowheads.

Description

[0001] related application [0002] This application claims the benefit of priority to U.S. Provisional Patent Application Serial No. 61 / 790197, filed March 15, 2013, and U.S. Nonprovisional Patent Application Serial No. 14 / 164353, filed January 27, 2014, both of which are incorporated by reference The contents of the two US patent applications are incorporated into this application. technical field [0003] The present invention generally relates to a fluid head device for producing bottles and the like, and more particularly, to a three-parison, co-extrusion, multi-layer fluid head device. Background technique [0004] Containers containing liquids and bulk solids can be manufactured economically in a continuous blow molding process in which a parison comprising a hollow tubular body of molten polymer resin is continuously extruded from a fluid head. The parison is engaged by a series of moving dies, for example formed by half-molds, which successively contact the respect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/22B29C47/26B29C47/06B29C49/04B29C47/08B29C47/30B29C48/09B29C48/335B29C48/345
CPCB29C47/265B29B11/10B29C47/0023B29C47/0054B29C47/065B29C47/084B29C47/263B29C47/30B29C49/22B29C2049/048B29C48/09B29C48/0017B29C48/21B29C48/0255B29C48/3363B29C48/345B29C48/3366B29C49/04108B29C49/04116B29C49/48185
Inventor 罗伯特·格热戈日·罗加切夫斯基
Owner GRAHAM PACKAGING CO LP