Methods and systems for the preparation of molded plastic articles having a structural barrier layer

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United States of America Patent

PATENT NO 9511526
SERIAL NO

13593489

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Abstract

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Disclosed herein are methods and systems for the preparation of a co-injection molded multilayer plastic article. Some methods include co-extruding a combined polymeric stream having an interior core stream encased by an inner stream and an outer stream. A volumetric ratio of the inner stream to outer stream is adjusted during injection of the combined stream into the a mold cavity to alter a streamline along which the interior core stream flows thereby forming cohesion member that structurally interlocks the interior layer with the inner layer, with the outer layer or with both. Some embodiments reduce or eliminate a need for addition of an adhesive in the composite stream to prevent delamination of layers of the resulting multilayer plastic article. In some embodiments, cohesion members may be employed to produce a desired cosmetic effect in a resulting article.

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Patent Owner(s)

Patent OwnerAddress
MILACRON LLC1 BATESVILLE BLVD BATESVILLE IN 47006

International Classification(s)

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  • 2012 Application Filing Year
  • B29C Class
  • 3499 Applications Filed
  • 2678 Patents Issued To-Date
  • 76.54 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20122013201420152016201720182019202020212022202320240255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sweetland, Matthew Bedford, US 66 538

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  • 1 Citation Count
  • B29C Class
  • 27.47 % this patent is cited more than
  • 9 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges5221228109261011301 - 1011 - 2021 - 3031 - 4041 - 5091 - 100100 +01002003004005006007008009001000110012001300

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