🚀 go-pugleaf

Hi All,
I have noticed some cofusion on the list when it comes to paper weight.
Some times one person will talk about bond and another will think its
offset.
This can lead to confusion since 53lb bond is 135lb offest.

In order to make the discussions on different paper easier to follow,
I have decided to post a short explanation of how weights are derived
and a chart 
of the most popular types and weights.

I hope this helps, If anybody notices a error please let me know.

************************************************************************************
GSM: When paper is measured as gsm ( grams per square meter) it makes it
very easy 
to compare any papers. This is, IMHO the best way to measure paper,
however it is not a universal standard, I don't even use it all the
time.

basis weight: A papers weight  is usually expressed as its basis weight.
The basis
weight is the weight of 500 sheets of a paper of a particular size.
Since each type 
paper(cover, offset, bond, etc..) is expressed in terms of a different
basis size,
a 20lb. offset and a 20lb. cover are not the same.

The following chart should help. It contains the most common types of
papers.
All basis sizes will be included with the type of paper.

*NOTE offset is also called BOOK or TEXT*

************************************************************************************
This is by no means a complete chart. To find different weights
extrapolate as needed.
(ie 105gsm is 28lb bond) bond is approximately .2665 gsm
****************************************************************
*-- GSM -*- offset -*- bond -*- cover -*- bristol -*- index ---*
*  g/m2  *  25x38   * 17x22  *  20x26  * 22.5x28.5 * 25.5x30.5 *
*--------*----------*--------*---------*-----------*-----------*
*   49   *   33     *   13   *    18   *    22     *    27     *
*--------*----------*--------*---------*-----------*-----------*
*   60   *   40     *   16   *    22   *    27     *    33     *
*--------*----------*--------*---------*-----------*-----------*
*   75   *   50     *   20   *    28   *    34     *    42     *
*--------*----------*--------*---------*-----------*-----------*
*   80   *   55     *   22   *    30   *    37     *    45     *
*--------*----------*--------*---------*-----------*-----------*
*   90   *   60     *   24   *    33   *    41     *    50     *
*--------*----------*--------*---------*-----------*-----------*
*  120   *   80     *   32   *    45   *    55     *    67     *
*--------*----------*--------*---------*-----------*-----------*
*  200   *  135     *   53   *    74   *    91     *   110     *
*--------*----------*--------*---------*-----------*-----------*
*  310   *  208     *   82   *   114   *   140     *   170     *
*--------*----------*--------*---------*-----------*-----------*
*  397   *  267     *  105   *   146   *   182     *   220     *
****************************************************************
-- 
#######################################
John Goerger
Sales/Marketing, Weber Valentine
Email: mailto:john@weber-valentine.com
URL: http://www.weber-valentine.com
P: 847-439-7111 F: 847-439-6887
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