How to Size Paper Tubes for Supplement Stick Packs

To size a paper tube for supplement stick packs, start with the dimensions of the filled, sealed packets and the number of sticks per tube. The supplier needs to know how the packets will be arranged, how much usable space is available inside the tube, and whether the lid closes without pressing against them.

This article focuses on paper tubes used as outer packaging for single-serving supplements such as collagen and electrolyte powders. Each stick pack remains sealed inside its own primary package.

Quick Answer

• Measure the filled stick pack, including its sealed ends and thickest point.
• Confirm the tube’s usable inside diameter, clear opening and usable height.
• Test the full packet count with the actual lid and base before approving the sample.

Measure Filled Stick Packs Before Choosing Tube Size

Use production-filled and sealed stick packs rather than relying only on flat artwork or an unfilled packaging drawing. Powder volume, folded edges and end seals can change the final dimensions.

Measure several filled packets to account for normal differences in thickness. If the co-packer provides only a flat drawing, use it as an initial reference and confirm the dimensions with physical samples before approving the tube.

Match Stick Pack Dimensions to Tube Interior

The packet measurements determine how much usable space the paper tube needs. However, the total count and loading arrangement also affect the required diameter.

For example, fourteen narrow sticks arranged upright may need a different internal diameter from the same fourteen packets placed in another direction. Sealed ends can also overlap and create thicker sections within the group.

Ask the supplier to assess the complete packet arrangement rather than calculating the tube size from one stick alone. The goal is to fit the full count without forcing the packets against the tube wall or changing their shape.

PK Paper Box develops custom paper tubes for nutrition and supplements with internal diameter and usable height matched to the packed product. Share the actual packet dimensions and target quantity so the structure can be reviewed before sampling.

Check Tube Opening, Lid Clearance and Usable Height

Three measurements should appear clearly on the sample drawing:

• Usable inside diameter: The available space inside the tube body for the loaded packets.
• Clear opening: The narrowest opening through which the packets must pass. A rolled rim or internal shoulder may reduce this space.
• Usable height: The vertical space available after the lid and base are fitted.

Do not treat the tube’s overall outside dimensions as its usable internal size. A fitted lid, raised base or internal edge can reduce the space available for the packets.

Also check whether the full group can pass through the opening in the intended loading direction. A tube may have enough internal volume but still be difficult to fill if the opening is too narrow.

Test a 14-Stick Tube Before Approving the Sample

Consider an illustrative tube designed for fourteen electrolyte powder sticks. The following measurements are sample inputs, not standard tube dimensions.

Use the sample to check four things:

1. Load all 14 sticks. Follow the planned packing method and check whether the sealed ends catch at the opening.
2. Close the lid. Make sure it reaches the approved position without bending or pressing against the packets.
3. Check removal. Test whether customers can take out the first stick and reach the last one without difficulty.
4. Repeat the test. Use filled sticks from another batch to check whether normal size differences affect loading or removal.

Record the approved packet dimensions, count, opening and usable height on the sample drawing. If different SKUs use different packet sizes or quantities, test each combination before deciding whether they can share one tube structure.

PK Paper Box can support this review through its structure and sampling process, helping buyers confirm the physical construction before production.

Compare Paper Tubes with Cartons for Stick Packs

A paper tube can suit supplement products that need upright presentation, a distinctive round shape and access to multiple single-serving packets. It may also work well for products that customers open repeatedly.

A folding carton may be more practical when the packaging line uses rectangular blanks, shelf space has strict depth limits, or different flavors need separate sections.

Compare both formats using the same filled packet count. Check the following:

• Ease of loading and removing individual sticks
• Shelf space and finished package dimensions
• Storage and shipping case efficiency
• Product presentation and flavor separation

The right choice depends on the packing process, retail requirements and intended customer experience. You can also explore our nutraceutical packaging solutions when comparing suitable outer packaging structures.

See the supplement packaging guide for a broader comparison of paper tubes and folding cartons.

Prepare Your Specifications for a Custom Tube Quote

A clear specification helps the supplier assess the structure and prepare a suitable sample. Before requesting a quote, provide:

• Filled stick pack dimensions and a physical sample, if available
• Number of sticks per tube and loading direction
• Target tube dimensions or capacity
• Required paperboard, liner or insert options
• Artwork and preferred surface finish
• Order quantity by SKU and delivery destination

Ask the supplier to confirm the internal diameter, clear opening and usable height on the sample drawing. Approve the physical sample with the actual packet count before releasing the order.

For a custom project, PK Paper Box can review your packaging requirements and develop a paper tube structure around your product. Send your specifications for a custom packaging quote to discuss the required dimensions, materials and order quantity.