Material research

Polyethylene(PE)
-extremely resistant to fresh and salt, water, food and most water-based solutions.
-milk bottles, toys, beer crates......
-non-toxic
-recyclable if it has not been coated with other material

Type of PE:
Low density polyethylene(LDPE)-used for film and packaging.
Medium (MDPE) and High (HDPE) density polyethylene-used for containers and pipes.
Linear low-density polyethylene (LLPDE)
Very low density polyethylene ( VLDPE)

Silicones
-High-performance, high cost material
-do not absorb water
-used as a baby bottle tips