Browse Prior Art Database

Improved Co-injection Press Nozzle Assembly

IP.com Disclosure Number: IPCOM000121821D
Original Publication Date: 1991-Sep-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 1 page(s) / 29K

Publishing Venue

IBM

Related People

Ableitner, DE: AUTHOR [+5]

Abstract

Disclosed is a method of controlling plastic material leakage on the shut-off needles of the coinjection press nozzle assembly by use of compression rings to prevent needles from binding or stopping.

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This is the abbreviated version, containing approximately 100% of the total text.

Improved Co-injection Press Nozzle Assembly

      Disclosed is a method of controlling plastic material leakage
on the shut-off needles of the coinjection press nozzle assembly by
use of compression rings to prevent needles from binding or stopping.

      The addition of compression rings in strategic locations of
shut-off needles will allow maintaining enough clearance between
needles and nozzle body to keep needles moving freely but will not
allow plastic material to pass between the bearing surfaces out the
back of needles causing a binding problem.

      The compression ring is a split ring that can be slipped over
the needle into a groove.  (See Figs. 1 and 2.)

      Disclosed anonymously.