REQUEST:

A4 paper sizing: Why is A4 sized the way it is?

In the US, there is little understanding of the A4 paper size used everywhere except in North America.

It is a great system – elegant and rational – and worth looking at.  There is also a reason that your 3-ring binder won’t work with A4 paper as it is taller.

The A series of paper sizes are designed so that when you cut one in half, you get two pieces of the next-smallest-size, and every size has height and width in the same proportion. A little math reveals that one can achieve this by having the height and width in the ratio sqrt(2):1, or approximately 1.414:1.

So once you’ve decided that this is the ratio you want for your page, how do you decide the absolute size?

In the case of the A series of paper sizes, an A0 piece of paper is exactly 1 square metre, requiring width x width x 1.414 = 1, which gives a width of 84.1cm and height of 118.9cm (to the nearest mm).

An A1 piece of paper has a length that’s the same as the width of A0, or 84.1cm, and a width of 84.1cm / sqrt (2) = 59.5cm. Which you’ll notice is half the height of the A0 size (118.9cm).

These relationships hold true going all the way down to A10:

It happens that of the A series, A4 is the one that’s closest to the traditional size used for correspondence, and this has therefore become the de facto standard paper size in the metric world (i.e. pretty much globally except the United States).

One fairly obvious consequence of this is that one can make a booklet of a particular size, from a sheet of the next-largest-size folded in half. So A3 sheets of paper can be folded to create A4-size booklets.

Another interesting consequence is that it becomes easy to calculate the weight of single sheets. Standard photocopy paper is usually 80gsm (grams per square metre), thus an A0 sheet, being 1 square metre, weighs 80g. An A1 weighs 40g, A2 is 20g, A3 is 10g, and A4 is 5g. (And so on.)

Stumbled on at Quora


Hole Placement for 3-Ring Binders – a handy guide.

We will get calls from people asking what the hole placement is for various rings in binder – from A4 to notebook sized binders.

Until know, we didn’t have a great visual that explain it. Then we found this chart which offers an instant reference for 12 different binder ring configurations. Most of you probably don’t get as excited as we do about these things, but there it is.  We were psyched.

Find your binder ring size and the space between the rings is listed on the right:

Common 3-ring binder hole patterns and measurements

Example:

I have a half sheet notebook binder, and need to punch paper for it.  I thumb down until I find “US 3 rings for 51/2 x 81/2″ paper.

There are 3-rings and it says “(2x 2 3/4″)”. This means there are two spaces, 2-3/4″ wide.  Since it is a 3 ring set up, set up the middle ring in the center and the other two rings 2-3/4″ our from that and – voilá! –  perfectly spaced rings.

The perfect guide for hole placement in 3-ring binders.  Carry your copy with you always!

 

 


Cool Custom Printed Mailer – Corporate Image

While we are known making the best 3-ring binders in the world, Corporate Image does a lot of other things equally as well.

Take this mailer for instance:

The Vision Council created these eye-catching mailers to send brochures. With a great look, natural matte finish and a simple folding style, these custom mailers are effective and affordable.

 

custom printed mailer for the Vision Council - Corporate Image TheVisionCouncilmailer

 

Custom four flap enclosure mailer specifications:

6-1/4” wide x 6” high four flap enclosure (flap redesigned with a squared closure) with a 1/4” spine with dust flaps to hold a brochure. Die #8661

Custom four flap enclosure mailer environmental benefits:

Ships Flat, saving money, space and fuel.

100% recyclable


Are we proud of our digitally printed binders? Yes we are.

 If you want a beautiful, strong custom 3-ring binder, but need small quantities, do we have an option for you!

This binder for the Des Moines Art Festival (an excellent Arts Festival by the way) was designed by Kayli Kunkel and just came off the line yesterday.  When we got a look at it, we were excited.  When the Art Festival saw it – well lets say they were very pleased:

The Binders look awesome – WOW! Those are really going to have an impact. Thank you so much!

Steven King – executive director

Check them out for yourselves!

a custom digital binder - Corporate Image

des moines arts festival 3-ring binder - Corporate Image

 

2″ D-ring binders

100% recyclable

Digitally printed cover, white liner


Understanding Your Plastics – PVCs

So why limit your exposure to PVC?

Our sister company Naked Binder makes off the shelf eco friendly 3-ring binders and pocket folders and has done a lot of research on vinyls, plastics and the environment.  Corporate Image has been printing with soy inks, using recycled papers and board and making custom recycled and recyclable 3-ring binders, pocket folders and boxes for nearly 30 years. Together we plan to make recyclable 3-ring binders and folders the standard, eliminating tons of vinyl waste in our landfills, offices and homes.

Why you ask?  So happy you did!

Health

No other plastic contains or releases as many dangerous chemicals. These include dioxins, phthalates, vinyl chloride, ethylene dichloride, lead, cadmium, and organotins. There’s no safe way to manufacture, use or dispose of PVC products

In You and your food. As a persistent bioaccumulative toxin (PBT), it does not breakdown rapidly and travels around the globe, accumulating in fatty tissue and concentrating as it goes up the food chain. Dioxins from Louisiana manufacturing plants migrate on the winds and concentrate in Great Lakes fish. Dioxins are even found in hazardous concentrations in the tissues of whales and polar bears and in Inuit mother’s breast milk. The dioxin exposure of the average American already poses a calculated risk of cancer of greater than 1 in 1,000 – thousands of times greater than the usual standard for acceptable risk. Really scary is that dioxins concentrate in breast milk to the point that human infants now receive high doses, orders of magnitude greater than those of the average adult.

Air pollution near plants: In Mossville, Louisiana, air monitoring conducted by the US Environmental Protection Agency in 1999 showed concentrations of vinyl chloride more than 120 times higher than the ambient air standard.

Working in plants: Studies have documented links between working in vinyl chloride production facilities and the increased likelihood of developing diseases including angiosarcoma of the liver, a rare form of liver cancer, brain cancer, lung cancer, lymphomas, leukemia, and liver cirrhosis.

(non) Recycling

The multitudes of additives required to make PVC useful make large scale post consumer recycling nearly impossible for most products and interfere with the recycling of other plastics. Of an estimated 7 billion pounds of PVC thrown away in the US, only 14 million – less than 1/2 of 1 percent – is recycled. The Association of Post Consumer Plastics Recyclers declared efforts to recycle PVC a failure and labeled it a contaminant in 1998.  We tried.  Learn more about how that went.

Although vinyl is in theory recyclable, there are currently no vinyl recycling programs available.  The vast majority of PVCs end up in landfill or incinerated – and both are environmentally hazardous. Currently 0.1% to 3% of vinyl is recycled (mostly industrial waste) of the 2 billion and 4 billion pounds of PVC that is discarded in the US every year.

Fire dangers

PVC poses a great risk in building fires, as it releases deadly gases long before it ignites, such as hydrogen chloride which turns to hydrochloric acid when inhaled. As it burns, whether accidentally or in waste incineration, it releases yet more toxic dioxins. PVC burning in landfill fires may now be the single largest source of dioxin releases to the environment. If you see the former entry about recycling, with the approximately 8400 landfill fires every year in the US, this is an issue.

More Information

What are Dioxins?

Types of Vinyl

 Links to more information

Healthy Building Network

EPA Enforcement    EPA regulates

Ecocycle on recycling

PVC Information

dangers in making   dangers in fire      disposing of PVC

Center for Health, Environment and Justice.

PVC, the Poison Plastic – Unhealthy for Our Nation’s Children and Schools: PDF | HTML

Our Health and PVC – What’s the Connection?: PDF HTML

PVC Flooring and Toxic Cleaning Products: PDF | HTML

Top Ten Reasons Your School Should Go PVC-Free: PDF | HTML

PVC & Environmental Justice: PDF HTML

PVC Policies Around the World: PDF | HTML

Wikipedia’s entry

Ted Talks: Diana Cohen: Tough Truths About Plastic Pollution

Ted Talks: Capt. Charles Moore on Seas of Plastic

Healthy Building Network

 

Vinyl Industry Sites

Vinyl Institute

PVC.org


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