Pressing Things Between 2 Plastic Sheets

Press fits rely on constant stress and friction.

Pressing things between 2 plastic sheets.

Paper is a thin sheet material produced by mechanically and or chemically processing cellulose fibres derived from wood rags grasses or other vegetable sources in water draining the water through fine mesh leaving the fibre evenly distributed on the surface followed by pressing and drying. Place the sandwiched leaves on top of the rag. Place another old cloth rag on top of the sandwiched leaves. Although paper was originally made in single sheets by hand almost all is now made on large machines.

Heat the iron to high. Vacuum forming only works with thin plastics and moulds with no undercuts. It logs the important plastic parameters so you can reproduce them on any other press. Plastic press fits are like brangelina attractive but won t last.

My practice is to use a universal setup sheet that allows you have one setup sheet per mold not per machine. After the mold closes the parison is inflated like a balloon until it fills the empty cavity. Optix acrylic sheet is a lightweight impact resistant optix acrylic sheet is a lightweight impact resistant transparent material that is a great replacement for glass in many applications. Molten plastic in the form of a large droplet called a parison is placed into a two piece clamshell mold.

Because the walls of the mold are water cooled the plastic quickly solidifies and the bottle can be ejected. The table with your mould on is lifted into position and a vacuum is used to draw the plastic over the mould. Its higher impact strength makes it a great glass replacement for applications such as garage door windows storm windows and other glazing needs. Slowly run the iron back and forth over the cloth rag.

But plastic will flow under constant strain eventually causing the stress and thus the friction to disappear. The sheet plastic is heated until it becomes soft. Do not use steam. It is critical to duplicate the plastic parameters as you move a mold from one press to another.

Cover your ironing board with an old cloth rag so you do not get wax on the board.