What should you send before a sample trial?
Send a written application brief before any material: the product, the fill-weight range, the finished pack dimensions and the output you are aiming for. Add known handling issues, such as dusting, caking, stickiness or settling, and any precautions the operators should take with the material.
The team uses the brief to discuss sample quantity, film requirements and whether a trial is appropriate at all. Some questions can be answered from the brief alone; a trial earns its cost when the open question is how the product flows, doses or seals on the machine.
Name the dosing method you expect to discuss, for example an auger for powder, a pump for liquid or gel, or a volumetric cup for free-flowing granules, and the pack format you plan to sell. If you are moving an existing recipe to a new pack size or film, say so and describe the current pack.
What should you agree before shipping a sample?
Agree sample quantity, fees, freight, handling and return or disposal before anything leaves your site, because each of these depends on the project. Do not send confidential formulations or physical samples until the handling scope is agreed.
Trial bookings and schedules are confirmed individually. This page does not promise free testing or a fixed turnaround, so ask for the fee position and the planned trial date in writing before you ship.
Tell the team how the material is normally stored and transported, for example sealed against moisture or kept cool, and whether the sample may be consumed in the trial. A sample that has picked up moisture or separated in transit may not behave like your production material.
Defining the scope of a stick pack trial
A useful trial has a written scope that both sides accept before the run: the pack width and length to form, the film to use, the dosing method, the target fill weight and the checks to perform. Without it, a short demonstration can look successful while the real questions stay unanswered.
Ask which machine arrangement will be used and how it differs from the configuration being proposed to you, for instance in lane count, dosing unit or sealing tooling. Ask too whether you can attend the run or receive photographs or video of it. Settle these points as part of the scope, not afterwards.
What should a sample trial record?
Agree in advance what the trial should record and ask for the record in writing, so the result can be compared with later tests. The list below is a practical minimum; add product-specific checks, such as powder in the seal area or drips at the nozzle, where they matter.
- Material identification and trial conditions
- Dosing and pack configuration
- Film used and finished pack appearance
- Fill-weight observations and seal checks
- Limits encountered and proposed follow-up work
How do trial results shape the machine configuration?
Trial results carry into the configuration only as far as the trial conditions match production. Check whether the material and film were production-equivalent, and note every difference before setting acceptance targets or finalizing the machine specification.
Where the fill-weight and seal observations are sound, you can propose the same checks as criteria for the factory acceptance test and reference them in the quotation. Where the trial exposed a limit, agree the follow-up work, such as a second run with another film or dosing arrangement, before relying on the result.
Common Questions
How much sample material should I send for a stick pack trial?
Send the quantity agreed with the team rather than a guess. The amount depends on the fill weight, the pack size and how many settings need to be tried, so share the brief first and ask for the figure together with packaging, freight and return or disposal instructions.
Should the trial use my own film?
Use production-equivalent film wherever you can. Film structure and thickness affect forming and sealing, so a substitute can hide problems that only appear with your finished pack material. If your film is not yet available, record that the trial used a different film and plan a later check.
Is stick pack sample testing free?
This page does not promise free testing. Fees, freight and handling depend on the project and are agreed before any material is shipped. Ask for the fee position in writing together with the planned trial date, and keep that confirmation with your project records.
Does a successful trial confirm the final machine specification?
No. A trial shows how your product behaved under the recorded conditions. The final specification, acceptance criteria and commercial terms are set in the quotation and contract, and differences between trial and production material should be resolved before you rely on the result.