How to Save the Film Mould Cost for Different Size Neck Labels?

When you make the tshirt and make different sizes, there will be different size neck labels. Diffferent size needs different size label will cause different screen printing film mould cost. 

Here is a practical guide with Key Strategies to save film mould costs when producing neck labels in different sizes:

1. Standardize the Neck Diameter Range
Limit your label sizes to a small set of standard neck diameters (e.g., 28mm, 30mm, 38mm). Avoid custom diameters for every SKU. The more sizes you consolidate, the fewer moulds you need.

2. Use Adjustable or Interchangeable Mould Inserts
Instead of a dedicated mould for each size, design a master mould with interchangeable core rings or inserts. You only change the insert (low cost) while the main mould body remains the same.

3. Adopt a Sleeve-Label Approach (Shrink or Stretch)
Use roll-fed shrink or stretch sleeves that fit multiple bottle neck sizes within a certain range. One film sleeve mould can cover several diameters because the film shrinks or stretches to conform. This eliminates size-specific moulds entirely.

4. Design with Common Cut-Off Lengths
Even if diameters vary, keep the label height (vertical length) identical across sizes. This allows you to use the same film web width and same cutting cylinder, reducing the need for separate forming moulds.

5. Use Modular Tooling Systems
Invest in quick-change modular tooling where the forming shoulder, sealing jaws, and cutting knives are separate modules. You only replace the part that touches the neck size, not the entire mould block.

6. Choose Flexible Film Materials
Softer, more elastic films (e.g., PE or OPS with high shrinkage) can accommodate small size variations without requiring a new mould. Tune your film thickness to allow more tolerance.

7. Implement Digital or Laser Cutting
For short runs or frequent size changes, replace physical cutting moulds with digital laser cutters. No mould is needed—just software changes. This has high upfront equipment cost but zero per-size mould fees.

8. Optimize for Multi-Cavity Moulds
If you must have separate moulds, design them as multi-cavity moulds that produce 2–4 different sizes in one shot. This reduces the total number of moulds and changeover time.

9. Share Moulds Across Product Lines
Use the same neck label size for multiple brands or product variants. Change the printed design, not the film forming mould. This increases volume per mould and amortizes the cost faster.

10. Negotiate Pooled Tooling 
Ask your film supplier if they have "stock" mould sizes they already own. Many converters have standard tooling for common neck sizes—you can use theirs for a small rental fee instead of paying full mould fabrication.

11. Run Batch Production by Size
Consolidate your production schedule so that all labels of the same size are made in one long run. This reduces mould changeovers, prolongs mould life, and lowers per-unit mould depreciation.

12. Consider 3D-Printed Prototype Moulds for Testing

Before committing to a steel mould, test with 3D-printed resin moulds for low-volume trial runs. They are 70–80% cheaper and allow you to validate fit before finalizing permanent tooling.

13: Main Label and Size Label Each Mould.

It is no need main label with each size each mould. 
Here it is the order we made before. If use the size label on the main label, it needs 10 mould from xs to 5xl, now it only need main label mould and size label mould, just 2, it saved a lot of cost. 

Final Rule of Thumb:
For high volume → invest in a master adjustable mould.
For low volume / many sizes → use sleeve labels or laser cutting.
For medium volume → standardize to 3–4 neck sizes and share moulds across SKUs.

By applying these tactics, you can typically reduce film mould costs by 30–60% depending on your size variety and annual output.