Extruded reinforcements
A polymeric insert formed by extruding a material including polyamide and a plurality of long fibers to form a column structure having a first profile. A method for making such an insert comprising passing a polymeric material in a substantially flowable state through a die, and substantially simultaneously passing a fiber through the die, wherein during the passing step the polymeric material has a relative viscosity of less than about 60 according to ASTM D789.
1. A method for making an insert, comprising the steps of:
a. extruding a thermoplastic material to form a first column structure having a first profile;
b. extruding a thermoplastic material to form a second column having a second profile that is different from the first profile;
c. connecting the first column structure to the second column structure with a connector device so that the connector device is shaped to receive the first profile of the first column structure and the second profile of the second column structure;
wherein an activatable material is located onto at least a portion of one or more of the column structures and is activated by heat entering within the one or more column structures through one or more openings formed in one or more walls of the one or more column structures.
2. The method of claim 1 , wherein the one or more of the column structures include one or more openings formed in a wall of the one or more column structures.
3. The method of claim 1 , wherein the activatable material is located on at least one internal wall of the one or more column structures.
4. The method of claim 1 , wherein the thermoplastic material is selected from the group consisting of a homopolymer, a copolymer, a terpolymer or a blend of two or more polymers.
5. The method of claim 1 , wherein the insert has a specific gravity per ASTM D792 of from about 1 to about 1.3.
6. The method of claim 1 , wherein the insert comprises a glass filler material.
7. The method of claim 1 including a plurality of extruded fibers that extend between 50% and 90% of the length of the insert.
8. The method of claim 7 , wherein one or more of the plurality of fibers are less than about 50 mm in length.
9. The method of claim 7 , wherein one or more of the plurality of fibers are at least about 1 mm in length.
10. The method of claim 7 , wherein one or more of the plurality of fibers extends along substantially the entirety of the insert.
11. The method of claim 7 , wherein one or more of the plurality of fibers includes a coating.
12. The method of claim 7 , wherein one or more of the plurality of fibers includes a coating comprising a polymer, a polymer precursor, or a combination thereof.
13. The method of claim 1 wherein the insert comprises a polymeric material having a melting point of at least about 185° C., and less than about 260° C.
14. The method of claim 1 , wherein the thermoplastic material forms a tenacious bond with an exterior portion of one or more of the plurality of fibers.
15. The method of claim 1 , wherein the plurality of fibers comprise at least about 15% of the insert.
16. The method of claim 7 , wherein the insert has a wall thickness that varies along a length of the insert.
17. The method of claim 7 wherein the insert has a wall thickness that varies by at least 25% along a length of the insert.
18. A method for making an insert, comprising the steps of:
a. extruding a thermoplastic material to form a first column structure having a first profile;
b. extruding a thermoplastic material to form a second column having a second profile that is different from the first profile;
c. forming one or more openings in one or more walls in one or more of the first column structure and second column structure;
d. locating an activatable material along one or more internal walls of one or more of the first and second column structures;
e. connecting the first column structure to the second column structure with a connector device so that the connector device is shaped to receive the first profile of the first column structure and the second profile of the second column structure;
f. heat activating the activatable material so that heat reaches the activatable material within the one or more of the first column structure and the second column structure via the one or openings formed in the one or more walls in the first column structure and the second column structure.
19. The method of claim 18 , wherein the insert has a specific gravity per ASTM D792 of from about 1 to about 1.3.
20. The method of claim 18 , including extruding a plurality of fibers that extend at least 50% of the length of the insert.