Injection molded jar with pour feature

1. A jar body comprising the unitary single-piece combination of:

an externally-threaded ( 38 ) neck ( 26 ) having a rim ( 32 ) defining a jar mouth ( 34 );

a main body ( 28 ) having a sidewall ( 46 ) and a base ( 50 );

a shoulder ( 30 ) extending radially outward from an upper end of the main body to couple the main body to the neck; and

an interior pour channel ( 60 ) formed by a first sidewall ( 64 ) and a second sidewall ( 66 ) along an externally-threaded portion of the neck.

2. The jar body of claim 1 wherein:

the first and second sidewalls join the shoulder.

3. The jar body of claim 2 wherein:

the main body has a generally rectangular cross-section; and

the first and second sidewalls are aligned with an adjacent pair of corners of said rectangular cross-section.

4. The jar body of claim 3 wherein:

along a majority of a height of the main body, an interior width between the longer sides of the main body cross-section is 50-80% of an interior width between the shorter sides of the main body cross-section.

5. The jar body of claim 3 wherein:

both interior dimensions of the generally rectangular cross-section are less than an inner diameter of the neck.

6. The jar body of claim 2 wherein:

the first and second sidewalls are each formed with a V-shaped cross-section defining an inner wall along the channel and an outer wall; and

for each of the first and second sidewalls there is a gap between the inner wall, the outer wall, and a circumferential wall portion of the neck, which circumferential wall portion bears the external thread.

7. The jar body of claim 1 wherein:

an internal diameter of the neck is 2-5 cm.

8. The jar body of claim 1 injection molded of polyethylene or polypropylene.

9. A jar comprising:

the jar body of claim 1 ; and

an internally-threaded cap engaged to the externally-threaded neck.

10. The combination comprising:

the jar of claim 9 ; and

a liquid within the main body.

11. A method for using the jar of claim 9 , the method comprising:

unthreading the cap;

tilting the jar to pour liquid contents of the jar,

wherein:

during the pouring, the pour channel guides the pour flow along the neck.

12. A method for manufacturing the jar body of claim 1 , the method comprising:

injection molding said jar body as said unitary single-piece combination.

13. The method of claim 12 wherein:

the first and second sidewalls are each formed with a V-shaped cross-section defining an inner wall along the channel and an outer wall; and

during the molding, one or more die cores include portions respectively forming interior spaces between walls of each sidewall.

14. The jar body of claim 1 wherein:

the channel extends between the rim and the shoulder.

15. The jar body of claim 1 wherein:

the channel has a lower end joining the shoulder.

16. The jar body of claim 1 wherein:

the channel is configured to provide a narrower pour than would otherwise be present.

17. The jar body of claim 1 wherein:

the first sidewall and the second sidewall extend between the rim and the shoulder.

18. The jar body of claim 1 wherein:

the first sidewall and the second sidewall each have a lower end joining the shoulder.

19. A jar body comprising the unitary single-piece combination of:

an externally-threaded ( 38 ) neck ( 26 ) having a rim ( 32 ) defining a jar mouth ( 34 );

a main body ( 28 ) having a sidewall ( 46 ) and a base ( 50 );

a shoulder ( 30 ) extending outward from an upper end of the main body to couple the main body to the neck; and

an interior pour channel ( 60 ) formed along the neck,

wherein:

the first and second sidewalls join the shoulder;

the first and second sidewalls are each formed with a V-shaped cross-section defining an inner wall along the channel and an outer wall; and

for each of the first and second sidewalls there is a gap between the inner wall, the outer wall, and a circumferential wall portion of the neck, which circumferential wall portion bears the external thread.

20. A jar body comprising the unitary single-piece combination of:

an externally-threaded ( 38 ) neck ( 26 ) having a rim ( 32 ) defining a jar mouth ( 34 );

a main body ( 28 ) having a sidewall ( 46 ) and a base ( 50 );

a shoulder ( 30 ) extending outward from an upper end of the main body to couple the main body to the neck; and

an interior pour channel ( 60 ) formed along the neck,

wherein:

the first and second sidewalls join the shoulder;

the main body has a generally rectangular cross-section;

the first and second sidewalls are aligned with an adjacent pair of corners of said rectangular cross-section; and

both interior dimensions of the generally rectangular cross-section are less than an inner diameter of the neck.