Positive displacement molding of plastic parts

Gordon, N. Ross; Dilly, Scott J.; Simmons, Kevin L.; Woodcock, Leslie J.

Title: Positive displacement molding of plastic parts

Abstract

The present invention is a method and apparatus for molding plastic parts and placing and orienting reinforcing fibers within structurally thin sections. More specifically, the method of the present invention is a molding technique wherein positive displacement is applied to incremental sections of a charge (plastic mixed with reinforcing fibers), thereby sequentially forming the desired part and placing reinforcing fibers within structurally thin sections. The apparatus of the invention is a moveable ram that may be tapered and that is in contact with the charge during forming.

Inventors:: Gordon, N. Ross; Dilly, Scott J.; Simmons, Kevin L.; Woodcock, Leslie J.

Issue Date:: 2018-07-10

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1463597

Patent Number(s):: 10016914

Application Number:: 07/923,416

Assignee:: BATTELLE MEMORIAL INSTITUTE (Richland, WA)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS

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B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
B29C70/462 - {Moulding structures having an axis of symmetry or at least one channel, e.g. tubular structures, frames}
B29C2043/3628 - {moving inside a barrel or container like sleeve}
B29C33/22 - by rectilinear movement
B29C43/361 - {with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
B29C2033/422 - {Moulding surfaces provided with a shape to promote flow of material in the mould cavity}
B29C70/00 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
B29C45/56 - using mould parts movable during or after injection, e.g. injection-compression moulding {
B29C2045/5695 - {using a movable mould part for continuously increasing the volume of the mould cavity to its final dimension during the whole injection step}
B29C33/40 - Plastics, e.g. foam or rubber

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
B29K2105/12 - of short lengths, e.g. chopped filaments, staple fibres or bristles

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DOE Contract Number:: AC06-76RL01830

Resource Type:: Patent

Resource Relation:: Patent File Date: 1992 Jul 31

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 42 ENGINEERING

Citation Formats


                    Gordon, N. Ross, Dilly, Scott J., Simmons, Kevin L., and Woodcock, Leslie J. Positive displacement molding of plastic parts.  United States: N. p., 2018. 
        Web.

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                    Gordon, N. Ross, Dilly, Scott J., Simmons, Kevin L., & Woodcock, Leslie J. Positive displacement molding of plastic parts.  United States.

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                    Gordon, N. Ross, Dilly, Scott J., Simmons, Kevin L., and Woodcock, Leslie J. Tue .  
        "Positive displacement molding of plastic parts".  United States.  https://www.osti.gov/servlets/purl/1463597.

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@article{osti_1463597,

  title        = {Positive displacement molding of plastic parts},

  author       = {Gordon, N. Ross and Dilly, Scott J. and Simmons, Kevin L. and Woodcock, Leslie J.},

  abstractNote = {The present invention is a method and apparatus for molding plastic parts and placing and orienting reinforcing fibers within structurally thin sections. More specifically, the method of the present invention is a molding technique wherein positive displacement is applied to incremental sections of a charge (plastic mixed with reinforcing fibers), thereby sequentially forming the desired part and placing reinforcing fibers within structurally thin sections. The apparatus of the invention is a moveable ram that may be tapered and that is in contact with the charge during forming.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2018},

  month        = {7}

}

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Works referenced in this record:

Injection molding of fiber reinforced articles
patent, October 1991

Layden, George
US Patent Document 5,061,423
URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F5061423

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Title: Positive displacement molding of plastic parts

Abstract

Citation Formats

Injection molding of fiber reinforced articles patent, October 1991

Injection molding of fiber reinforced articles
patent, October 1991