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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10434696 B1

PDFFull Text
Date of Patent:
Oct. 08, 2019

Filed:

Jun. 21, 2018

Annular die and method for extrusion

Applicant:

Kautex Textron Gmbh & Co. KG, Bonn, DE;

Inventors:

Joachim Eckhardt, Bonn, DE;

Thomas Froitzheim, Sankt Augustin, DE;

David Schenkel, Bonn, DE;

Assignee:

KAUTEX TEXTRON GMBH & CO. KG, Bonn, DE;

Attorney:

Grossman, Tucker, Perreault & Pfleger, PLLC

Primary Examiner:

Christina A Johnson

Assistant Examiner:

Xue H Liu

Int. Cl.
CPC ...
B29C 48/30 (2019.01); B29C 48/09 (2019.01); B29C 48/325 (2019.01); B29C 48/10 (2019.01); B29C 48/12 (2019.01); B29C 48/13 (2019.01); B29C 48/345 (2019.01); B29C 49/04 (2006.01); B29C 49/02 (2006.01); B29K 101/12 (2006.01);
U.S. Cl.
CPC ...
B29C 48/30 (2019.02); B29C 48/09 (2019.02); B29C 48/302 (2019.02); B29C 48/327 (2019.02); B29C 48/10 (2019.02); B29C 48/12 (2019.02); B29C 48/13 (2019.02); B29C 48/345 (2019.02); B29C 49/04 (2013.01); B29C 2049/023 (2013.01); B29C 2049/048 (2013.01); B29C 2948/92619 (2019.02); B29C 2948/92647 (2019.02); B29C 2948/92904 (2019.02); B29K 2101/12 (2013.01);
Abstract

The invention relates to an annular die on an extrusion head for producing tubular or sheet-like preforms with an arcuate die gap and with a melt channel delimited by a mandrel and a die body, the cross-sectional profile of the melt channel being variable by way of adjusting elements, the annular die according to the invention being distinguished by the fact that the outer circumference of the melt channel is at least partially delimited directly by at least one radially adjustable slide, that the slide is formed by a number of segments that can be adjusted together from at least one first position into at least one second position, and that the segments in each position form a respectively closed arc portion of the delimitation of the melt channel, the radius of the arc portion being different according to the position of the segments.

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