Laser cutting is the most widely implemented application of lasers in industry. The many advantages of this process stimulate users in industry to try this technique to cut anything they may need. Some of these materials are different kinds of wood, which are being cut with excellent results and productivity. The radiation of CO2 lasers is highly absorbed by cellulose of woods, so the main cutting mechanism is chemical degradation of this organic constituent by the laser radiation. Wood is also substituted in many applications for some cheaper composites derived from wood residues. Some of the most widely used are the well-know particleboard and medium density fiberboard (MDF), using aminoplastics or phenolic resins as binder of the wood chips. Phenolic resins are also the main constituent of a new kind of composite which is formed as a board, substituting wood in highly aggressive environments. But laser cutting of wood and phenolic resin panels involves a serious healthy hazard since their combustion and decomposition may produce aerosols (fumes, smokes and mists) and organic vapors which can be toxic and carcinogenic. Unfortunately, information about decomposition byproducts of these resins under laser irradiation is not available in order to accomplish with safety codes. In the present work we study laser cutting of particleboard and phenolic resin panels, evaluating the health hazard of the byproducts according to the United States Occupational Safety and Health Administration.

1.
Steen
,
W. M.
(
2003
)
Laser material processing
.
Springer
,
London
.
2.
Powell
,
J.
(
1998
)
CO2 laser cutting
. 2nd ed.
Springer-Verlag
,
London
.
3.
LIA Nonbeam hazards subcommittee
(
1999
) Nonbeam hazards, in:
J.
Powell
(Ed.)
LIA Handbook of Laser Materials Processing
,
Laser Institute of America
,
Orlando
, EE.UU.,
214
218
.
4.
Zarate
,
C.N.
,
Aranguren
,
M.I.
, and
Reboredo
,
M.M.
(
2008
)
Thermal degradation of a phenolic resin, vegetable fibers and derived composites
,
Journal of Applied Polymer Science
107
,
2977
2985
.
5.
Bahramian
,
A.R.
,
Kokabi
,
M.
,
Navid Famili
,
M.H.
, and
Beheshty
,
M.H.
(
2006
)
Ablation and thermal degradation behaviour of a composite based on resol type phenolic resin: Process modelling and experimental
,
Polymer
47
,
3661
3673
.
6.
Bahramian
,
A.R.
,
Kokabi
,
M.
,
Navid Famili
,
M.H.
, and
Beheshty
,
M.H.
(
2008
)
High temperature ablation of kaolinite layered silicate/phenolic resin/asbestos cloth nanocomposite
,
Journal of Hazardous Materials
150
,
136
145
.
7.
Kovalenko
,
V. S.
(
1999
) Laser cutting of Nonmetals. CO2 laser cutting, in:
J.
Powell
(Ed.)
LIA Handbook of Laser Materials Processing
,
Laser Institute of America
,
Orlando
, EE.UU.,
456
459
.
8.
Yusoff
,
N.
,
Ismail
,
S. R.
,
Mamat
,
A.
, and
Ahmad-Yazid
,
A.
(
2008
)
Selected Malaysian Wood CO2-Laser Cutting Parameters And Cut Quality
,
American Journal of Applied Sciences
5
,
990
996
.
9.
Lum
,
K.C.P.
,
Ng
,
S.L.
, and
Black
,
I.
(
2000
)
CO2 laser cutting of MDF. 1. Determination of process parameter settings
,
Optics and Laser Technology
32
,
67
76
.
10.
Hata
,
K.
,
Shibata
,
K.
,
Okabe
,
T.
,
Saito
,
K.
, and
Otsuka
,
M.
(
2000
)
Influence of laser beam irradiation conditions on the machinability of medium density fiberboard impregnated with phenolic resin
.
Journal of Porous Materials
7
,
483
490
.
11.
Schlecht
,
P.C.
and
O’Connor
,
P.F.
(Eds) (
August
,
1994
)
NIOSH Manual of Analytical Methods (NMAM®)
, 4th ed.
DHHS (NIOSH) Publication
94
113
.
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