EXTRUDED PET PARISON, CONTAINER, AND METHOD
An extruded PET parison includes a first extruded polymer comprising PET, and a second extruded polymer comprising PET. In embodiments, the first extruded polymer and the second extruded polymer are co-extruded, and the first extruded polymer has an intrinsic viscosity that is higher that the intrinsic viscosity of the second extruded polymer. A monolayer embodiment is also disclosed. In embodiments, a monolayer extruded PET container is comprised of bottle grade PET resin that has been solid stated and may have an IV from about 0.96 to about 1.4.
1 . An extruded PET parison comprising:
a first extruded polymer comprising PET; and
a second extruded polymer comprising PET;
wherein the first and second polymers are co-extruded, the first and second extruded polymers are in a solid state, and the first extruded polymer has an intrinsic viscosity that is higher that the intrinsic viscosity of the second extruded polymer.
2 . The parison of claim 1 , wherein the first extruded polymer has an intrinsic viscosity of at least 0.96.
3 . The parison of claim 1 , wherein the first extruded polymer has an intrinsic viscosity from about 1.0 to about 1.4.
4 . The parison of claim 1 , wherein the second extruded polymer has an intrinsic viscosity of less than 0.85.
5 . The parison of claim 1 , wherein the second extruded polymer has an intrinsic viscosity of about 0.80 to about 0.87.
6 . The parison of claim 1 , wherein the second extruded polymer comprises post-consumer recycled (PCR) PET or regrind PET.
7 . The parison of claim 1 , wherein the second extruded polymer includes a colorant.
8 . The parison of claim 1 , wherein the cross-sectional thickness of the first extruded polymer is at least about 0.20 of the total parison thickness.
9 . The parison of claim 1 , wherein the cross-sectional thickness of the second extruded polymer is less than about 0.80 of the total parison thickness.
10 . The parison of claim 1 , including one or more additional extruded polymer layers.
11 . The parison of claim 10 , wherein the one or more additional extruded polymer layers comprise recycled or reground material.
12 . A container formed from the parison of claim 1 .
13 . An extruded PET parison comprising:
an extruded monolayer polymer comprising PET;
wherein the extruded monolayer polymer is in a solid state, and the extruded monolayer polymer has an intrinsic viscosity from about 0.96 to about 1.4 and is devoid of chain extenders.
14 . The parison of claim 13 , wherein the intrinsic viscosity is about 1.1.
15 . A container formed from the parison of claim 13 .
16 . The container of claim 15 , wherein the container is substantially free of striations and haze.