In order to understand the PET bottle neck finish dimensions & PET bottle neck types, we need to know a number of things before talking the details.
PET Bottle Neck Definition and Measurements
The neck of the bottle is defined by its total height, its inner diameter, its outer diameter and its thread. The dimensions of a neck (expressed in mm).
PET Bottle Neck Finish Dimensions Measurements
“T” Dimension – The outside diameter of the thread. The tolerance range of the “T” dimension will determine the mate between bottle and closure.
“E” Dimension – The outside diameter of the neck. The difference between the “E” and “T” dimensions divided by two determines the thread depth.
“I” Dimension – The inner diameter of the bottle neck. Specifications require a minimum “I” to allow sufficient clearance for filling tubes. Linerless closures, with a plug or land seal, and dispensing plugs and fitments require a controlled “I” dimension for a proper fit.
“S” Dimension – Measured from the top of the finish to the top edge of the first thread. The “S” dimension is the key factor that determines the orientation of the closure to the bottle and the amount of thread engagement between the bottle and cap.
“H” Dimension – The height of the neck finish. Measured from the top of the neck to the point where the diameter “T”, extended down, intersects the shoulder.
Below table list with most popular PET Bottle Neck Finish Dimensions & PET Bottle Neck Types for your further information.
| Neck Picture | Neck Types | Neck Dia | Bottle Neck Threads | Neck Weights | Applications |
|---|---|---|---|---|---|
 |
ROPP | 25 mm | Single Thread turn 720° | 2.8 g | * Pharmaceutical bottles |
 |
ROPP | 28 mm | Single Thread turn 720° | 3.7 g | * Pharmaceutical bottles |
 |
PCO 1810 | 28 mm | Single Start Thread turn 720° | 5.1 g | Carbonated Beverages * Cola type drinks * Lemonades * Other soft drinks |
 |
PCO 1811 | 28 mm | Single Start Thread turn 650° | 3.8g | Carbonated Beverages * Short Bottles * Cola type drinks * Lemonades * Other soft drinks |
 |
BPF-C | 28 mm | Single start Thread turn 720° | 6.1 g | Carbonated Beverages * Cola type drinks * Lemonades * Other soft drinks |
 |
Alcoa 1716 | 28 mm | Single Start Thread turn | 5.9 g | Carbonated Beverages * Cola type drinks * Lemonades * Other soft drinks |
 |
PCO Corvaglia | 28 mm | Single start Thread turn 744° | 3.6 g | Carbonated Beverages * Cola type drinks * Lemonades * Other soft drinks |
 |
Alaska | 26.75 mm | 3 start Thread turn 120° | 3.6 g | * Juice * RTD tea * Energy drinks * Spring water * Mineral water |
 |
30/25 | 30 mm | low 3 start turn 120° | 3.7 g | * Juice * RTD tea * Energy drinks * Still water |
 |
30/25 | 30 mm | high 3 start Thread turn 120° | 3.9 g | * Juice * RTD tea * Energy drinks * Spring water * Mineral water |
 |
HF Bericap | 38 mm | 2 start Thread turn 180° | 7.0 g | * Juice * Milk * Still beverage drinks * Still water * Dairy products * RTD tea * Energy drinks |
 |
CF Bericap | 38 mm | 3 start Thread turn 120° | 4.3 g | * Juice * Milk * Still beverage drinks * Still water * Dairy products * RTD tea * Energy drinks |
| * The application is listed as mostly used in the market.It maybe not all the same as your application. | |||||
How To Measure a Common GPI/SPI Neck Finishes Dimensions
Find a cap’s diameter, measuring from one side of the inner wall to the opposite side. Calculate a bottle’s neck finish by measuring the diameter of the outermost threads. The resulting millimeter measurement will be the “T” dimension. Then, see how many times the threads pass one another to determine the finish. (ex. 24 mm “T” dimension with 1 thread turn = 24/400 neck finish)
More preform neck types for different applications are available in the market:
| Bottle Applications | Bottle Neck Types | Bottle Cap / Closure Applications | |
|---|---|---|---|
| For Edible Oil Bottles | 29-21 dropless neck 29-21 dropless neck 29-21 snap on neck 32-25 snap on neck 32-27.5 snap on neck 37-29 snap on neck 39-29 dropless neck 39-29 snap on neck |
Applicable closure: Press-on | |
| For Shampoo Bottles For Lotion Bottles For Sprayer Bottles For Detergent Bottles |
18-410 neck 18-410 neck 20-410 neck 22-415 neck 24-410 neck 28-400 neck 28-410 neck 28-414 neck M28 SP400 Ratchet neck 28 canyon neck 29-32 neck finish 29-23 special neck |
Mist spray caps Trigger spray caps Pump dispensing caps Dispenser caps Flip-top caps Yorker spout caps Tilt-top-disc caps Pull-push caps Child resistant caps |
|
| For Food For Seasoning For Personal Care For Cleaner |
33-400 neck 43-400 neck 43-485 neck 45-400 neck 53-485 neck 63-485 neck |
Pull-push caps Child resistant caps Dual door caps Hinged dispensing caps Plain caps Twist caps toggle swing caps Tamper evident caps |
|
| For Ketchup Bottles | Special Orientated neck | Snap top dispensing caps | |
| For Crown Neck Bottle | 29 crown cork neck | – | |
| * The application is listed as mostly used in the market.It maybe not all the same as your application. | |||
If you need any further information we did not talking above, please leave a comment or contact us directly for an answer.
