Pharmaceutical Coils Sizes, Definitions & FAQ

3 packer bottles showing pharmaceutical coil or ball at the top. Left to right: White Bottle, Dark Amber Bottle, Green Bottle
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Pharmaceutical Coils Sizes, Definitions & FAQ 3 packer bottles showing pharmaceutical coil or ball at the top. Left to right: White Bottle, Dark Amber Bottle, Green Bottle

 

Pharmaceutical cotton balls and coils offer impact resistance and absorbent qualities for packaging tablets and capsules like vitamins and food supplements. Coils are available in other fibers like rayon and polyester as well which we answer later in this blog which may be best for you. Note that when ordering pharmaceutical balls or coils the ideal storage temperature is 68°F - 77°F. Below we answer some of our most asked questions, however, if you still need assistance reach out to our team of packaging expert. 

How is coil measured? 

Coil is measured in grams per yard. For example, a 16 gram coil would be 16 grams per yard. 

What coil sizes are available? 

The most common sizes are 9, 12, 16 and 20 grams per yard. Custom sizes are from 3.5 grams to 26 grams per yard. Here are some sizes TricorBraun currently has available. 

Which type (Poly, Rayon, or Cotton) fits my application best?

Polyester: Soft, odorless petroleum product that is most commonly used for packaging soft-gel capsules.

Rayon: Synthetic fiber used as a filler for containers or bottles during transit preventing damage to tablets or capsules.

Cotton: Natural biodegradable fiber that absorbs moisture created by tablets or capsules.

How do I determine the amount of cotton needed for a particular bottle size? 

See chart below.

 

Bottle Size

Opening in Inches

Suggested Gram Weight Per Linear Yard
50 cc 1 1/16" 9 Gram
75 cc 1 1/16" 9 Gram
120 cc 1 1/4" 12 Gram
190 cc 1 1/4" 12 Gram
290 cc 1 1/2" 16 Gram
400 cc 1 1/2" 16 Gram
500 cc 1 1/2" 16 Gram

 

How large are the different sizes of cotton balls?

See Chart Below. 

 

Sizes Weight (gr) Cotton/Rayon Balls Per Bag Cotton/Rayon Balls Per Case
Medium Cotton Balls 0.26 2,000 4,000
Large Cotton Balls 0.90 1,000 4,000
Large Rayon Balls 0.90 1,000 2,000

 

Can I get a C of C?

Yes, a C of C can be provided to you by a TricorBraun Packaging Consultant. 

 

Want to browse more pharmaceutical coil or ball options? Shop now TricorBraun's in stock options.

As you consider which item suits your product best, our packaging consultants are here to assist you. Contact us for expert guidance tailored to your specific packaging challenges. 


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