Consider masking tape but unless it sticks to the plastic really well then pull it all off again as loose tape encourages fire.
Laser cut hdpe plastic.
Hdpe is cut resistant and milky white in color.
Like most thermoplastics the heat generated while you are cutting it will cause the plastic to melt and fuse together behind the cutting blade.
All plastics cut with a smooth clean and burr free edge.
It can be efficiently cut by laser but it recedes slightly during the cut kerf is relatively wide.
Cutting of polyethylene can be performed with a co 2 laser to produce a clean non discolored cut with a slight raised edge near the point of ablation.
Polyethylene does not readily absorb the energy of a 1 06 micron fiber laser.
However due to the relatively low.
Laser engraving and laser marking of polyethylene are possible using a co 2 laser.
Molten plastic on the surface each side of the cut can be a problem particularly if the air assist blows it around.
You could have a hdpe cutting board in your kitchen.
Hdpe is similar to candle wax.
It loves to burn so watch out.
As the focussed laser beam slices through the plastic the edge re solidifies immediately after being vaporised and often a glassy edge is the final result.
High density polyethylene hdpe is a versatile fda and usda approved food grade plastic.
Laser cutting of polyethylene.