Talk:Paper density

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meaning of '#'?

please inform anybody....

What gsm or weight of paper indicate '#'?

Example : 70#

That just means 70lb. Wikidsoup _[talk] 23:27, 27 November 2007 (UTC)[reply]

ream weight

All amazon pages I can find list shipping weights for 500-page reams: http://www.amazon.com/gp/product/B000EFQ5AK/ref=ox_ya_oh_product , http://www.amazon.com/HP-Multipurpose-Inkjet-Brightness-11200-0/dp/B00005UKAX/ref=pd_sbs_op_2 , but they're always 1/4 of the listed weight. This implies that the weight is measured per 2000 sheets and not per 1000 as this page asserts. What's correct? 71.217.4.184 (talk) 05:08, 11 August 2009 (UTC)[reply]

Nevermind, scratch that. I just read the explanation of basis reams and it appears that the weight for the letter paper refers to the uncut sheets which are 4x as big. So it's one ream of those. Weird measurement. 71.217.4.184 (talk) 05:10, 11 August 2009 (UTC)[reply]

Japanese paper weight

Kg/1000 sheets... of what? A standard size such as A0? The specific paper size being purchased? Trimmed or oversize? Tesspub (talk) 10:02, 23 July 2010 (UTC)[reply]

Vandalism?

The article appears to have had chunks cut out of it. In particular, I think these two edits were both vandalism and subsequent editors have not realised and tried merely to patch up the nonsensical results rather than revert the text to something that makes sense:

The resultant sentence "The basis weight of paper is the density of the number of sheets..." doesn't make sense. I'm going to restore the old text. Weeble (talk) 12:19, 5 July 2012 (UTC)[reply]

Tag Basis Weight

Tag and Bristol are NOT the same Basis Weight. Tag is 24x36x500 like Newsprint.

http://www.internationalpaper.com/US/EN/Products/BasisWeight.html http://www.wcpsolutions.com/page.php?id=174 http://www.edsebooks.com/paper/grammage.html

All three above show Tag as 24x36. I quote product in Tag weight all day, every day, it is 24x36. I would ruin the table if I edited it.

https://twitter.com/FiberMarkChris — Preceding unsigned comment added by 75.138.191.115 (talk) 01:34, 20 June 2013 (UTC)[reply]

density vs basis weight

Density is mass per cubic unit; for example gram per cubic centimeter. Basis weight and grammage are mass per unit of area; for example gram per square meter or pounds per 1000 sq inches. They are not the same thing. Also there are several types of reams for paper or paperboard. This article needs a major revision and perhaps a title change. Pkgx (talk) 20:10, 15 August 2013 (UTC)[reply]

The article on Grammage or Basis Weight now properly contains the correct material. Density of paper is now consistent with ISO standards. Pkgx (talk) 00:37, 25 August 2015 (UTC)[reply]

I'm inclined to revert your edits, because what you have done is a sort of stealth change of topic name. Of course "density" normally means "mass per volume", but the term "area density" exists, and describes the perfectly coherent concept of "mass per area" (of a 2-dimensional entity). For paper, "density" *always* means areal density, so the term "paper density" is perfectly clear and reasonable. Changing it to "grammage" really isn't right, because this is a rather slangy term, and stands for "grams per square metre", so it does not include the US (and Japanese) measures based on a number of sheets.

I am only too happy to agree that the article needs improving, but I do not think this is the way to do it. I would be interested to see other opinions. Imaginatorium (talk) 13:38, 25 August 2015 (UTC)[reply]

We should stay with the ISO standards; it is clear that paper density is mass per volume. Also, the article on Grammage includes Basis Weight discussions; Basis weight of paper links to Grammage. Reliable sources support the recent changes. There is no reason to revert these corrections. Pkgx (talk) 18:18, 25 August 2015 (UTC)[reply]

Too industry biased

Since the heading is paper density, it would make more sense to discuss the actual density of paper (average or specific examples) prior to explaining idiosyncratic and technically incorrect standards used by industry. — Preceding unsigned comment added by Gromitnyc (talk • contribs) 13:36, 20 August 2015 (UTC)[reply]

Yes, but the obvious problem is how you would refer to the densities you were describing!? In reality there is not much to say about the different densities of paper, and the article is all about the principal ways of specifying them. As so often happens, the policy of having combined articles in US and British English leads to a bit of a mess -- incidentally, I don't think your description is quite right: the standards are technically correct, they just happen to be ridiculous. Imaginatorium (talk) 14:17, 20 August 2015 (UTC)[reply]

Basis Weight Table

(someone recently deleted almost all useful content from the article - it ought to include some relevant useful tables)

Basis Weight ("Category") Table
Type Paper	Basic Size - 500 Sheets	
"Bond"              17" x 22"
"Offset"/Book/Text/Coated Paper    25" x 38"
"Cover"             20" x 26"
"Tag Stock"         24" x 36"
"Index"             25-1/2" x 30-1/2"

-71.174.188.32 (talk) 20:15, 25 February 2016 (UTC)[reply]