[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Fwd: Re: UV coatings on magazine covers
- Subject: Fwd: Re: UV coatings on magazine covers
- From: Wayne Pferdehirt <email@example.com>
- Date: Tue, 10 Jul 2001 16:24:38 -0500
- Delivered-To: firstname.lastname@example.org
- Delivered-To: email@example.com
- List-Name: p2tech
- Reply-To: Wayne Pferdehirt <firstname.lastname@example.org>
Forwarded from Printech.
Wayne P. Pferdehirt
Date: Tue, 10 Jul 2001 17:20:07 EDT
Subject: Re: UV coatings on magazine covers
There are some misconceptions regarding the recycling of printed matter
has either been printed with UV cured inks or coated with UV cured
These types of printed products have always been recyclable if a lower
paper such as board for folding paper boxes, corrugated containers, or
paper was to be made. I classify this type of recycling as
The problem with UV cured printed matter lies in the manufacturing of
that is equal or better in grade than the paper being recycled or
In recent years, there has been a dramatic improvement in
printed with UV cured inks or coatings. This is due to the progress made
paper companies in adopting new technology for recycling paper.
Back in the
early 1990's, the most common recycling technology used was washing and
screening. UV cured materials were not easily "upcycled" with
With the introduction of floatation cells into the recycling process, UV
cured materials could be "upcycled" more easily.
As paper companies have upgraded existing plants and built new ones in
response to the demand for recycled paper, floatation has become more
and the problem with UV cured printed matter has diminished quite
Essentially, floatation cells are used to bubble air through the repulped
screened fiber. Large particles such as formed from repulping UV cured
materials adhering to the fiber are carried to the surface of the pulp
are removed. While it does take more energy to repulp UV cured printed or
coated materials, this does not prohibit their ability to be recycled.
Economic factors also play a role in recycling paper as uncoated paper
to be more in demand than coated paper since there is more harvestable
per ton of paper, but in order for the floatation cells to be effective,
require a certain amount of clay or other inert to work properly. The
content can either be added or it can be supplied through using coated
which has increased the demand for coated papers.
It is interesting that this was never an issue in Europe where flotation
adopted before it became popular in the US. Conversely, paper printed via
water-based flexography is not readily recyclable with floatation
The paper companies are working to improve this, but to the best of my
knowledge, it has not been resolved.
Graphic Arts Technical Foundation
200 Deer Run Road
Sewickley, PA 15143
412/741-6860 x608 - Phone
412/741-2311 - Fax
MARK YOUR CALENDAR!
March 17-19, 2002
National Environmental, Health and Safety Conference
for the Graphic Communications Industries, Sheraton Imperial Hotel, RTP,
Director, MEPP, http://epdweb.engr.wisc.edu/mepp/
Co-Director, PNEAC http://www.pneac.org