US 12,239,925 B2
Candle filter support and plate assembly for polymer melts
Kenneth Wayne Moser, Longview, TX (US); Andrew Colin Lewis, Hallsville, TX (US); Bert Eugene Allen, Longview, TX (US); Stephen Wayne Coe, Longview, TX (US); Douglas James Landry, Sulphur, LA (US); and Wayne Scott Strasser, Kingsport, TN (US)
Assigned to Westlake Longview Corporation, Houston, TX (US)
Filed by Westlake Longview Corporation, Houston, TX (US)
Filed on May 16, 2023, as Appl. No. 18/198,078.
Application 16/217,119 is a division of application No. 15/338,792, filed on Oct. 31, 2016, granted, now 10,188,968, issued on Jan. 29, 2019.
Application 18/198,078 is a continuation of application No. 17/025,319, filed on Sep. 18, 2020, granted, now 11,691,094.
Application 17/025,319 is a continuation of application No. 16/217,119, filed on Dec. 12, 2018, granted, now 10,814,254, issued on Oct. 27, 2020.
Prior Publication US 2023/0285878 A1, Sep. 14, 2023
Int. Cl. B01D 29/15 (2006.01); B01D 29/21 (2006.01); B01D 29/96 (2006.01); B29B 13/10 (2006.01); B29C 45/24 (2006.01); B29C 48/50 (2019.01); B29C 48/691 (2019.01); B29C 48/694 (2019.01); B29K 105/00 (2006.01)
CPC B01D 29/15 (2013.01) [B01D 29/21 (2013.01); B01D 29/96 (2013.01); B29B 13/10 (2013.01); B29C 45/24 (2013.01); B29C 48/503 (2019.02); B29C 48/6912 (2019.02); B29C 48/694 (2019.02); B01D 2201/0407 (2013.01); B01D 2201/0415 (2013.01); B01D 2201/4092 (2013.01); B29K 2105/0067 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A polymer melt filter support comprising:
a hollow cylindrical body defined by a first end, a second end, and a cylinder wall having a first end portion and a second end portion;
a screw thread on the outside surface of the first end portion;
a plurality of holes in the cylinder wall at the second end portion;
an opening at the second end;
a cone insert adapted to fit inside of the opening at the second end; and
a cap for securing one or more filter elements around the second end portion of the cylindrical body,
wherein the cone insert and the cap have a through-hole in their center for accommodating a tie rod,
wherein the plurality of holes in the cylinder wall allow for a polymer melt outside of the cylindrical body to flow inside of the cylindrical body,
wherein the first end comprises an opening for the polymer melt inside of the cylindrical body to flow outside of the cylindrical body,
wherein the area of the openings of the plurality of holes in the cylinder wall on the outside surface of the cylinder wall is larger than the area of the openings of the corresponding plurality of holes in the cylinder wall on the inside surface of the cylinder wall, and
wherein the shape of the openings of the plurality of holes in the cylinder wall on the outside surface of the cylinder wall is non-circular.