How to specify sheets for digital post print.

Improve printing quality for corrugated post print by specifying the sheets.

Post- warp

Inspired by Star Wars and Harry Potter 😊 It has been a very strange year for all in 2020. But also, an interesting start in 2021 to have some time to reflect on post-warp. We all know how to handle warp, this within the limitations of the material combinations used for a certain corrugated compositionContinue reading “Post- warp”

S-warp

A while ago a customer was constantly facing s-warp on his recent corrugator (2800 mm). In the picture you see E-flute with s-warp. The s-warp was only noticeable when running E-flute.The s-warp was so extensive that certain jobs were considered as broke. This had for sure a cost. At the beginning we thought the paperContinue reading “S-warp”

Cross company cooperation at customer

I recently had the honour to work together at a customer to do trial runs and operator process training. We teamed up with two specialists Mr H. Medemblik from BHS corrugated and with Mr D. Murfitt from Crespel & Deiters (starch specialists). This resulted in a very successful cooperation and very good light weight boardContinue reading “Cross company cooperation at customer”

Even heat transfer

Today it was a terrible day to travel.  Due to an autumn storm I got rebooked and delayed. This prevented me from getting some work done on the corrugator this afternoon, so I’m using the time wisely to talk about another parallelism challenge or better put ‘controlled heat transfer’. It is very important that anContinue reading “Even heat transfer”

Even glue application

 One of the hidden problems in corrugators are uneven glue application along the width and even sometimes in machine direction. Let’s concentrate here on the doublebacker glue machines. Luckily there is such thing as a wet film glue metering gauge that helps you checking the evenness of the glue application. The instrument is simple andContinue reading “Even glue application”

It all starts with parallelism.

The ideal we want to get in corrugating are  flat sheets, no delamination, no wash-boarding and no honeycomb. To obtain above one has to have a corrugator which is in a perfect state. And this has nothing to do with the age of a corrugator but all to do with maintenance. People spend millions onContinue reading “It all starts with parallelism.”