Lightweight plastic container and preform
A plastic container includes a hollow body portion including a lower supporting base portion; a sidewall portion extending upwardly from the base portion; and a neck portion extending upwardly from the sidewall portion. The neck portion includes a support flange having an upper and lower surface, at least one thread, and a dispensing opening at the top of the neck portion. In embodiments, a closure may be provided to form an assembly. A preform and method for making a container are also disclosed.
1. A method for blow molding a plastic container from a plastic preform, the plastic container comprising:
a lower supporting base portion;
a sidewall portion extending upwardly from the base portion; and
a neck portion extending upwardly from the sidewall portion, the neck portion including:
a dispensing opening positioned at a top of the neck portion;
threads positioned below the dispensing opening;
a tamper-evident formation positioned directly below the threads, the tamper-evident formation having a lower surface; and
a support flange positioned below the tamper-evident formation, the support flange having an upper surface and a lower surface;
wherein the plastic container is formed of a material comprising polyethylene terephthalate (PET); and a vertical distance from the lower surface of the support flange to the top of the neck portion is from 0.425 to 0.500 inches.
2. The method according to claim 1 , wherein a vertical distance from the top of the neck portion to a lower surface of the tamper-evident formation is from 0.30 to 0.31 inches.
3. The method according to claim 1 , wherein a vertical distance from the lower surface of the support flange to the top of the neck portion is from 0.435 to 0.500 inches.
4. The method according to claim 1 , wherein a vertical distance from the lower surface of the tamper-evident formation to the lower surface of the support flange is from 0.125 to 0.150 inches.
5. The method according to claim 1 , wherein a vertical distance from the lower surface of the support flange to the top of the neck portion is from 0.450 to 0.500 inches.
6. The method according to claim 1 , wherein the threads comprise non-vented threads.
7. The method according to claim 1 , wherein a vertical distance from the upper surface of the support flange to the top of the neck portion is from 0.40 to 0.50 inches.
8. The method according to claim 1 , wherein the plastic container is filled with water.
9. The method according to claim 1 , wherein the threads comprise multiple-lead threads.
10. The method according to claim 9 , wherein the threads comprise triple-lead threads.
11. A method for blow molding a plastic container from a plastic preform, the plastic container comprising:
a lower supporting base portion;
a sidewall portion extending upwardly from the base portion; and
a neck portion extending upwardly from the sidewall portion, the neck portion including:
a dispensing opening positioned at a top of the neck portion;
threads positioned below the dispensing opening;
a tamper-evident formation positioned below the threads, the tamper-evident formation having a lower surface; and
a support flange positioned below the tamper-evident formation, the support flange having an upper surface and a lower surface;
wherein the plastic container is formed of a material comprising polyethylene terephthalate (PET); a vertical distance from the lower surface of the support flange to the top of the neck portion is from 0.425 to 0.500 inches; and an outside diameter of the support flange is greater than 22 mm and less than or equal to 39.2 mm.
12. The method according to claim 11 , wherein a vertical distance from the lower surface of the support flange to the top of the neck portion is from 0.435 to 0.500 inches.
13. The method according to claim 11 , wherein a vertical distance from the lower surface of the support flange to the top of the neck portion is from 0.425 to 0.450 inches.
14. The method according to claim 11 , wherein a vertical distance from the lower surface of the support flange to the top of the neck portion is from 0.450 to 0.500 inches.
15. The method according to claim 11 , wherein the threads comprise non-vented threads.
16. The method according to claim 11 , wherein a vertical distance from the upper surface of the support flange to the top of the neck portion is from 0.40 to 0.50 inches.
17. The method according to claim 11 , wherein the plastic container is filled with water.
18. The method according to claim 11 , wherein a vertical distance from the lower surface of the tamper-evident formation to the lower surface of the support flange is from 0.125 to 0.150 inches.
19. The method according to claim 11 , wherein the threads comprise multiple-lead threads.
20. The method according to claim 19 , wherein the threads comprise triple-lead threads.
21. A method for blow molding a plastic container from a plastic preform, the plastic container comprising:
a lower supporting base portion;
a sidewall portion extending upwardly from the base portion; and
a neck portion extending upwardly from the sidewall portion, the neck portion including:
a dispensing opening positioned at a top of the neck portion;
threads positioned below the dispensing opening;
a tamper-evident formation positioned below the threads, the tamper-evident formation having a lower surface; and
a support flange positioned below the tamper-evident formation, the support flange having an upper surface and a lower surface;
wherein the plastic container is formed of a material comprising polyethylene terephthalate (PET); and a vertical distance from the lower surface of the support flange to the top of the neck portion is from 0.435 to 0.500 inches.
22. The method according to claim 21 , wherein a vertical distance from the lower surface of the tamper-evident formation to the upper surface of the support flange is from 0.08 to 0.09 inches.
23. The method according to claim 21 , wherein a vertical distance from the lower surface of the support flange to the top of the neck portion is from 0.450 to 0.500 inches.
24. The method according to claim 21 , wherein the threads comprise non-vented threads.
25. The method according to claim 21 , wherein a vertical distance from the upper surface of the support flange to the top of the neck portion is from 0.40 to 0.50 inches.
26. The method according to claim 21 , wherein the plastic container is filled with water.
27. The method according to claim 21 , wherein the threads comprise multiple-lead threads.
28. The method according to claim 27 , wherein the threads comprise triple-lead threads.
29. A method for blow molding a plastic container from a plastic preform, the plastic container comprising:
a lower supporting base portion;
a sidewall portion extending upwardly from the base portion; and
a neck portion extending upwardly from the sidewall portion, the neck portion including:
a dispensing opening positioned at a top of the neck portion;
threads positioned below the dispensing opening;
a tamper-evident formation positioned below the threads, the tamper-evident formation having a lower surface; and
a support flange positioned below the tamper-evident formation, the support flange having an upper surface and a lower surface;
wherein the plastic container is formed of a material comprising polyethylene terephthalate (PET); a vertical distance from the lower surface of the support flange to the top of the neck portion is from 0.425 to 0.450 inches.