Manufacturing apparatus for profile extrusion molded articles an

Details Manufacturing apparatus for profile extrusion molded articles an Manufacturing apparatus for profile extrusion molded articles an

1996-09-27

1999-09-14

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Of varying cross-sectional area or with intermittent...

26417716, 425381, 425465, 425466, 425467, B29C 4716

Patent

active

059519304

ABSTRACT:
Aa apparatus for manufacturing profile extrusion molded articles having a gradually transforming portion at which its cross section gradually changes includes a stationary die block having an aperture in a shape of the maximum cross section of the gradually transforming portion and a resin passage in communication with the aperture, an extruder extruding resin material of a gradually changing amount to an inlet of the resin passage, and flow direction controlling means for changing a flow direction of the resin material flowing within the resin passage in accordance with the extruding amount of the resin material. The manufacturing apparatus can produce profile extrusion molded articles without any bypass passage, avoid the resin material to be discharged outside the stationary die block, and prevent unsightly lines tracing a shutter movement from appearing on the design surface of the extrusion molded articles.

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patent: 5567368 (1996-10-01), Ando et al.

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