A useful trial begins before the machine starts. The goal is to evaluate AD-304 UV Protector under conditions representative of the finished part and leave a record that can be repeated.
1. Document the baseline
Record product grade and lot, resin, recycled content, process, machine, normal temperature, wall thickness, and the visual or functional standard.
2. Confirm the documented scope
Resins
- High-density polyethylene (HDPE)
- Low-density polyethylene (LDPE)
- Linear low-density polyethylene (LLDPE)
- Polypropylene (PP)
- General-purpose and impact polystyrene
- Rigid and flexible PVC compounds
- Solid TPU
- EVA
- SAN
Processes
- Injection molding
- Extrusion
- Blow molding
- Thermoforming
3. Prepare the blend
Measure by weight, use clean equipment, and prevent carryover from the previous material. Retain samples of the resin and concentrate used in the trial.
| Variable | Published reference |
|---|---|
| Temperature | The product page does not publish one universal thermal window. Confirm the resin and process temperatures before trialing the additive. |
| Dosage or incorporation | The product page includes different references by resin. Confirm dosage for the project's material, wall thickness, and exposure conditions. |
4. Run a controlled trial
- Stabilize the equipment with the base resin.
- Introduce the blend without changing several variables at once.
- Separate the first transition parts.
- Record every dosage, temperature, or residence-time adjustment.
- Retain identified samples from the stable run.
5. Evaluate and decide
Compare appearance, dispersion, processing behavior, and part requirements against the initial acceptance criteria. When a change is needed, alter one controlled variable per trial.
- It does not replace weathering evaluation of the finished part.
- It should not be described as a color-protection additive.
- Compatibility and dosage must be confirmed through a process trial.
Official references
Check the live product page before quoting or repeating a trial. Current packaging and commercial information are maintained there.