Lightweight plastic container and preform
A plastic preform includes a hollow body portion including a closed base portion and a lower portion and a lower portion extending upwardly from the closed bottom portion; and a neck portion extending upwardly from the lower portion. The neck portion includes a dispensing opening positioned at a top of the neck portion, threads positioned below the dispensing opening, a tamper-evident formation having a lower surface and positioned directly below the threads, and a support flange having an upper surface and a lower surface and positioned below the tamper-evident formation. In an embodiment, the plastic preform is formed of a material comprising polyethylene terephthalate (PET), and 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. Containers and methods for molding preforms and making containers are also disclosed.
1. A method for injection molding a plastic preform, the plastic preform comprising:
a hollow body portion, comprising:
a closed bottom portion; and
a lower portion extending upwardly from the closed bottom portion; and
a neck portion extending upwardly from the lower 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 preform 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 top of the neck portion to a lower surface of the tamper-evident formation is about 0.31 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 0.435 to 0.500 inches.
6. 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 0.425 to 0.450 inches.
7. 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.
8. The method according to claim 1 , wherein the threads comprise non-vented threads.
9. The method according to claim 1 , wherein the threads comprise multiple-lead threads.
10. 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.
11. A method for injection molding a plastic preform, the plastic preform comprising:
a hollow body portion, comprising:
a closed bottom portion; and
a lower portion extending upwardly from the closed bottom portion; and
a neck portion extending upwardly from the lower 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 preform 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 tamper-evident formation to the upper surface of the support flange is from 0.08 to 0.09 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 0.435 to 0.500 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 0.425 to 0.450 inches.
15. 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.
16. The method according to claim 11 , wherein the threads comprise non-vented threads.
17. The method according to claim 11 , wherein the threads comprise multiple-lead threads.
18. The method according to claim 11 , wherein a vertical distance from the top of the neck portion to a lower surface of the tamper-evident formation is about 0.31 inches.
19. 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.
20. The method according to claim 11 , 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.
21. A method for injection molding a plastic preform, the plastic preform comprising:
a hollow body portion, comprising:
a closed bottom portion; and
a lower portion extending upwardly from the closed bottom portion; and
a neck portion extending upwardly from the lower 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 preform is formed of a material comprising polyethylene terephthalate (PET) and includes recycled material; an outside diameter of the support flange is greater than 22 mm and less than or equal to 39.2 mm; 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 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.
22. The method according to claim 21 , wherein a vertical distance from the top of the neck portion to a lower surface of the tamper-evident formation is about 0.31 inches.
23. The method according to claim 21 , wherein a vertical distance from the lower surface of the tamper-evident formation to the lower surface of the support flange is about 0.125 inches.
24. A method for injection molding a plastic preform, the plastic preform comprising:
a hollow body portion, comprising:
a closed bottom portion; and
a lower portion extending upwardly from the closed bottom portion; and
a neck portion extending upwardly from the lower 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 preform 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.