Do you need Teflon sheet for heat press?

Do you need Teflon sheet for heat press? Before pressing down on the garment, you would need to lay a heat resistant non-stick sheet on it to protect the foil design. As the heat press lifts off the garment, creating a vacuum. Without a teflon sheet, foil will respond to airflow since foil is light and the foil adhesive is hot and still pliable.

Before pressing down on the garment, you would need to lay a heat resistant non-stick sheet on it to protect the foil design. As the heat press lifts off the garment, creating a vacuum. Without a teflon sheet, foil will respond to airflow since foil is light and the foil adhesive is hot and still pliable.