Melting Issue in LDPE Extrusion with Black Masterbatch

We're facing this situation with black masterbatch for LDPE in extrusion lamination process where some of the masterbatch granules are not properly melted and mixed with LDPE, which creates a lot of defects in the lamination. I've tried a number of Black masterbatch samples from different companies and in different prices and the problem still exists. Increasing the extruder temperatures doesn't seem to be helping either. This happens only with Black masterbatch and all other masterbatch colors melt and blend in with LDPE to give an uniform color strength. Appreciate your professional advice on preventing this issue..Thank you!

Asked by hasitha.saveco 6 hours ago

How can I register a physical button press on a webplatform using the Feather HUZZAH with ESP8266?

I am trying to make a cube where 4 of its sides have a physical button which can be pressed. I want to be able to receive what button was pressed and when via long distance. So wherever the cube is, I can read what it sends on a webplatform of any kind.I looked into Adafruit IO, the feather boards and IFTTT automation but can't figure out how to do this still... I have a basic arduino kit already but nothing Adafruit related yet, before I buy more parts I need to make sure I know what I need and how I will make it work. So far my best research has gotten met to the Feather HUZZAH with ESP8266, but I am not skilled in coding are working with circuit boards. All I know is that it has the option for a battery so my cube can function on it's own (which is very important) So the main question is: How can I make a small portable cube with buttons on its side to send the data of those button presses to an online platform wherever it may be used?

Posted by SenneH 7 hours ago

What metals (Copper) or a Silver oxide-Copper solution on Mold with EMF from High voltage spark gap should I use for a project?

I am having problems deciding if I should use diluted silver nitrate on agar (Cocoa agar with sugars) or just add silver oxide and copper or copper powder to plates with Pencillum I growing on them then expose them into an aluminum sheet to fit three plates.This will determine if EMF alone (30 or 60 minutes, etc) or combined with small amounts of copper and silver (II) oxide mix or copper would prevent or kill spores? Alone EMF from high voltage may just inhibit growth but the silver copper mix may totally kill them!!It difficult since a correct dosage of this silver-copper mix must be used or copper. If it is too high it will prevent any growth before the EMF can have any effect. So maybe I need to dose it with 1g 5g and 2.5 g silver copper and see which one has modernate growth inhbition effects. Each test will be done together to save time.

Asked by SHOE0007 8 hours ago