[tex-live] rotating column conent of a twocolumn document

[hw]

Hi,

I'm trying to get the content within the columns of a twocolumn document 
rotated by 90 degrees.  The document goes like this:


\documentclass[10pt, twocolumn]{article}
\usepackage[utf8]{inputenc}
\usepackage[paperwidth=86mm, paperheight=83mm, top=2mm, bottom=2mm, 
left=2.5mm, right=2.5mm]{geometry}
\usepackage{pst-barcode}
\setlength{\columnsep}{3mm}
\setlength{\parindent}{0pt}
\begin{document}

\par foo bar text
\vspace{0.3in} \par asdf laskfsd \psbarcode{content of 
qrcode}{height=0.35 width=0.35}{qrcode}
\par {\bf asdf, xcas}

\newpage

\par foo bar text
\vspace{0.3in} \par asdf laskfsd \psbarcode{content of 
qrcode}{height=0.35 width=0.35}{qrcode}
\par {\bf asdf, xcas}

\end{document}


The "paper" printed on is labels, i. e. two lables side by side.  Each 
page spans two labels, hence each column is printed onto one label.

That makes for rather high, while narrow, labels.  I would like to 
rotate the content of each column by 90 degrees.  This would make the 
label wide and not too high:  The physical label can be rotated 
physically when attaching it to something.

So far, I have tried the 'rotating' and 'scape' package, without succes: 
  It's possible to get a rotation by some angle, like 45 degrees, but 
not 90.