The silicone pad helps with preventing scorching as it allows the product to heat more slowly and evenly. Teflon and parchment would be used mostly to protect your press and keep everything clean!
This HTV has a 50 wash test rating. However, the products here are a bit more unique. It would probably depend on how often you are handling the product and if the vinyl is in a high traffic area of the product!
what is difference or benefit of using the silicon covering or parchment paper or teflon for covering the item ? Which one to use WHEN?
The silicone pad helps with preventing scorching as it allows the product to heat more slowly and evenly. Teflon and parchment would be used mostly to protect your press and keep everything clean!
About how long will the htv last on the product?
This HTV has a 50 wash test rating. However, the products here are a bit more unique. It would probably depend on how often you are handling the product and if the vinyl is in a high traffic area of the product!