CPC B29C 48/12 (2019.02) [B29C 44/332 (2016.11); B29C 48/0012 (2019.02); B29C 48/0022 (2019.02); B29C 48/155 (2019.02); B29C 48/16 (2019.02); B29C 48/885 (2019.02); B29C 48/911 (2019.02); F16B 2/22 (2013.01); F16B 21/086 (2013.01); B29K 2021/003 (2013.01); B29K 2075/00 (2013.01); B29K 2077/00 (2013.01); B29L 2031/7282 (2013.01)] | 13 Claims |
1. A method of forming a plurality of fasteners, the method comprising:
extruding a continuous strip of material, the continuous strip of material defining a base portion, a tip portion, and a stem portion extending between the base portion and the tip portion;
removing a portion of material from the continuous strip of material along the tip portion such that a plurality of tip portions are separated from each other and spaced apart, each tip portion having at least one flexible tab; and
extruding the continuous strip of material through a foaming die, wherein the flexible tabs are elastically displaced away from the base portion during a foaming process such that a foam material fills a cavity within the foaming die and forms a sealing element around the stem portion.
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