Insulation in Molds

Hello there,

Junior, would make me feel like "G'l'asshopper".

1. Mica in injection molding circles is a glass bead or powder that is added as a filler to injection moldable material.

2. It can range in diameter from fine to coarse and ".003 an up".

3. Sometimes there is a call-out for insulator boards on the clamp plates of molds to reduce the heat loss into the machine platens especially on high temperature engineering materials such as PEEK and Rynite etc.

4. On many newer molding machines in high production factories these insulator boards are removed or not installed as the machines have magnetic molding machine plates.

5. The cost of the extra heating is offset by the ability to use their magnetic platens for fast set-up of the machine and odd-ball molds can be a nuisance.

6, The insulation allows less heat to be supplied to the mold but the uniformity of the heating is typically achieved with a good water circulation system and good thermocouple feed back to the heaters to regulate the input heat.

7. Try to get some of this simple information by searching google using exactly the same terminology that you question the CR4 crew.

8. You will remember it better if you seek it out, distill out what you need, rather than expecting to have it served up in bite size pieces by some twit like me.

Hope it helps and please don't take offense at the lecture!