If redispersible polymer powder arrives caked, document the package and lot condition before considering recovery. Material that can be made to pass through a screen has not automatically retained its required mortar performance.
Start with the actual grade’s instructions
The WACKER VINNAPAS technical sheet discusses handling and the possibility of agglomeration under unsuitable conditions. It is grade-specific guidance, not a storage guarantee for ENVO material. Request the offered product’s current storage, packaging and life information.
Record seals, liners, pallet positions, arrival dates and affected quantities. Keep potentially affected groups identifiable. The responsible quality team should decide whether any further handling and sampling is appropriate; do not improvise a rework operation simply to avoid rejecting mass.
| Stage | Question |
|---|---|
| Arrival record | Which packages and lots were affected? |
| Physical evaluation | Can material meet the agreed handling criterion? |
| Application qualification | Does the accepted material still meet the defined mortar criteria? |
Price only material that is accepted for use
For an economic review, divide the consistent delivered cost by accepted usable mass, then add any approved extra handling and testing. Do not count screened or broken-up material as usable merely because it looks powdery again. Keep any rework decision and its evidence traceable.
Send ENVO the affected lot references, storage and arrival record, photographs and agreed acceptance methods. For future orders, match package size and inventory policy to actual consumption. A lower price per bag cannot compensate for an unqualified material stream.
Related decisions
- RDP ash content: why 100 minus ash is not a proven active-polymer content
- RDP MFFT, Tg and service temperature: keep the three meanings separate
Review VAE redispersible polymer powder product identity and purchasing requirements. For the decision above, send ENVO your application, acceptance criteria, quantity and destination. Confirm the offered grade and available documents before ordering.
Technical references support the stated material or test method. Confirm the offered grade and current acceptance criteria for your application. Quality and document guidance
Share your application, target properties and test conditions to discuss the next step.
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