PET Plastic Bottle Neck Finish and Closure

I heard from a customer recently that the choice of the PET plastic bottle closure and PET preform neck design is as puzzling as a Rubik’s Cube.  He now wonders if he is drinking his OJ from a 358 DBJ PET plastic bottle? Pouring salad dressing out of a 38-400 or is it a 38mm deep skirt neck finish? Maybe he’s pumping soap from a Rieke RF-08 foamer with a 43mm PETneck thread?

The same could be said for polyethylene extrusion blow molding – is that RTD HDPE milk bottle sporting a SCII neck finish? Am I dispensing AgChem product from a HDPE bottle Rexam 63mm CRC compatible neck?

Yes, it can get confusing and make you wonder why there are so many different nomenclatures in what you would think is a standardized industry. PET plastic bottles and HDPE bottles neck and closure essentially have a common purpose; protect the product, seal against leakage, provide tamper evidency, and where needed to be child resistance. There are also specific applications where the type of product, temperature or environment will have an influence on the neck and bottle selection. Overall many designs are quite similar and perform equally. Aesthetics always plays a part as well.

As in any relationship both must work together. Bottle thread specifications must be dimensionally compatible with the closure to insure application and a proper seal.

Choosing the preferred closure allows for an accurate RNF (required neck finish) design. HDPE bottles neck finish dimensions are, of course, custom designed into the bottle mold. PET plastic bottle neck finishes are available, commonly in a preform, to fit most any closure or can be custom designed to fit a new closure.

Parker Plastics has an extensive line of PET preforms covering most any application whether it be food, household chemical or personal care.  Parker will help you match your closure with the correct neck finish and gram weight. Please review the wide array of preforms available from Parker Plastics.

Parker Preforms

 

 

Container Size Range (fl oz)

Neck Finish

Weight

Minimum

Maximum

 

 

 

 

28-400

22.0g

8 oz

12 oz

 

30.0g

10 oz

16 oz

 

36.0g

16 oz

20 oz

 

   

 

33-400

19.5g

5 oz

8 oz

 

23.5g

8 oz

12 oz

 

27.0g

12 oz

16 oz

 

36.2g

16 oz

20 oz

       

38-400

17.0g

5 oz

8 oz

 

21.0g

8 oz

10 oz

 

24.0g

10 oz

12oz

 

32.0g

14 oz

18 oz

 

37.5g

16 oz

20 oz

 

41.2g

18 oz

20 oz

 

45.0g

20 oz

24 oz

 

50.0g

24 oz

32 oz

 

55.0g

32 oz

40 oz

 

70.0g

48 oz

66 oz

 

87.0g

64 oz

96 oz

 

105.6 CR

64oz

1 gal

       

38mm Deep Skirt

32.0g

12 oz

16 oz

 

37.2g

16 oz

20 oz

       

33mm Kerr Liquor

82g & 79.5g

1.5L

2.0L

 

58g

750mL

1L

 

 

 

 

38mm Kerr

45.0g

20oz

24oz

(Drop Lock)

55.0g

32 oz

40 oz

       
 

EDIBLE OIL aka Rical or Bericap Snap Finish

 

32mm Rical

31g

14oz

18oz

 

50.5g

24oz

1L

       

36mm Rical

53.0g

32oz

51oz

 

 

 

 

42mm Rical

85g

2L

3L

 

97g

3L

5L

       
       
 

Dairy, Beverage and Juice

 

358 DBJ

23.0g

8 oz

12 oz

 

28.0g

12 oz

16 oz

 

33.0g

16 oz

32 oz

 

58.0g

32 oz

64 oz

 

72.0g

64 oz

96 oz

       

Bericap

25.0g

8 oz

14 oz

38mm 2 Lead (HPP & Hot Fill)

35.0g

16 oz

20 oz

 

45.0g

20 oz

32 oz

       

43mm Rieke Foamer

25.5g

8oz

12oz

       

Additional gram weights available for above categories.

 
       

Protective      Barriers:

 
  • Oxygen
  • UltraViolet
  • Anti-Static
  • Opaque Color
 
   

 

 

Parker Plastics, Inc. is celebrating 25 years of blow molding custom plastic bottles and jars in 2014. From the humble beginnings of a used 2 cavity extrusion blow molder in the Tulsa, Oklahoma area, Parker has grown to become a premiere plastic bottle suppliers and includes 3 strategic locations in Wisconsin, Oklahoma and Maryland.  Parker manufactures PET, HDPE, LDPE and Polypropylene bottles and jars on multiple platforms with modern high speed molding machines.

Contact us at customerservice@parkerplastics.net or call customer service at 262-947-3344 ext 227.