Storage

Polyvinyl alcohol’s (PVA) ability to react with water is essential to its function as a water transfer film, but this same sensitivity also makes it vulnerable to environmental changes. Humidity can significantly impact PVA by altering its moisture content, which affects its physical properties. In high humidity environments, PVA readily absorbs water from the air, causing it to swell, soften, or even become tacky. This increased water content can weaken PVA films, making them less durable and potentially altering their solubility or adhesion performance. High humidity can make PVA sticky, making it difficult to unroll or remove cleanly from its carrier sheet. Conversely, in low humidity conditions, PVA can become brittle and prone to cracking as it loses moisture, so maintaining stable humidity levels is critical for consistent performance.

Proper storage of Hydrokon Water Transfer Film at 65°–75°F and 35–55% relative humidity is critical to maintain its coating integrity and consistent printing performance. Exposure to temperatures or humidity outside of this range can cause the film to absorb moisture or dry out, leading to issues like wrinkling, curling, or uneven activation during dipping. Keeping the film sealed in its original foil packaging protects it from environmental fluctuations and contamination. Storing it in a controlled environment helps extend its shelf life. Taking these precautions preserves the quality and usability of Hydrokon film.