Thursday, March 13, 2014

Ironing Warped Corrugated Cardboard

I get sheets of corrugated cardboard from local sources that sell them as cushioning and packaging material. Sometimes the cardboard is warped, sometimes not. Sometimes the warped stuff seems to flatten a bit if stored properly. Sometimes not.

stack of warped corrugated cardboard panels


The last batch was the worst - all too warped to use and not flattening out with time. I store it stacked flat with weight on top of the stack. It's sat through wide humidity swings, which didn't seem to help or hurt. Stubborn warp.

 So I tried to iron it.



I've asked a couple local corrugated cardboard producers what kind of minimum order I'd have to place to get the 24"x12" 200# C-flute panels I need. I have initial responses from sales reps, but no answers. I may just be too small. Those guys probably throw away more offcut scraps in a few hours of production than I might use in a year.

I say that because I once got a batch of "scrap" from a corrugating facility for free. It was the flattest, highest quality cardboard I've seen, and I think I got three surfboards out of it.

Maybe instead of emailing manufacturers I should just be lurking out back of their warehouses after hours.

But I'd like a legit, steady source. Anyone have a lead for me for fairly flat 24"x12" 200# C-flute panels in Orange County, California?