not sure if this will help, but...
click--->
info on paper From this website:
PAPER WEIGHTS:
Paper weights can be very confusing. We would like to offer a very general understanding of paper weights. This is not technical, but we will associate common weights with everyday items you may come in contact with. Here at paper-papers.com we deal with two basic weights, 'TEXT WEIGHT' and 'COVER/CARD WEIGHT'. These two identifiers are probably the most important factors when you are purchasing a sheet of paper for your project. TEXT WEIGHT comes in varying weights, but will have a touch like a 'letterhead' paper you may have in your office. COVER WEIGHT (CARD WEIGHT) comes in varying weights, but will have a touch like your 'business card' or 'post card' you may have in your office. Keeping these things in mind, we will list some common weights below.
TEXT WEIGHT:
20LB - typically used as all-purpose paper, for copying machines, etc.
24/60LB - typically used for laser/ink printing and letterheads
28/70LB - typically used for letterhead and other important documents
80LB - a bit heavier than letterhead paper
(and the weights continue to go up....but this is still 'text weight' paper....don't let the similar weights confuse you with cardstock)
COVER WEIGHT:
57LB Vellum Bristol - typically used as mass mailing postcard (light weight postcard)
67LB Vellum Bristol - typically used as postcards
65LB Cover - typically used as light weight business cards, greeting cards, post cards, etc.
90 LB Index - typically used as light weight business cards, door hangers, post cards, etc.
80LB Cover - typically used for business cards, etc.
89LB Cover - etc.
92LB Cover - etc.
105LB Cover - etc.
110LB Cover - etc.
(and the weights continue to go up)
Hopefully by now this is starting to make sense. **Very important example, 80LB is listed in our text category and our cover category, but they are completely different paper. **
Envelopes are most commonly converted from the 'text' weight papers. Weight is important for many reasons. Thickness represents a nice quality and durability, but can also add to the weight of your mailing in which you may incur additional postage. It is important to determine the purpose of your project and potential weight of the complete mailing.
