DAK Americas B90A User Manual
Laser+®(B90A)
#10004457
polyethylene terephthalate (PET) resin is a copolymer formulated for conversion to
PET bottles by conventional single or
mechanical properties, including superior stress crack resistance. It performs
manufacture of CSD bottles made from thick
through the wall are important. DAK has reengineered Laser+
rmance without sacrificing intrinsic viscosity (IV), to meet increasing demand for CSD applications.
offers superior heat absorption and processing control, even at higher blowing speeds.
on rate enables
is ideally suited for food packaging applications and is considered in compliance with
the Food and Drug Administration (FDA) Food
Health Products and Food Branch (HPFB) file KS 0510310
Moisture Content (aspackaged)
Fines (as packaged, +24 MeshSize)
Partical Size,Shape (FlatCylinder)
ticipated performance data for these polyester resins and intermediates; they are not intended to
be used as design data. We believe this information is the best currently available on the subject. It is offered as a poss
perimentation you may care to undertake along these lines. It is subject to revision as additional
knowledge and experience is gained. DAK Resins makes no guarantee of results and assumes no obligation or liability
rmation. This publication is not a license to operate under, or intended to suggest
CAUTION: Do not use in medical applications involving permanent implantation in the human body. For other medical
e “DAK Medical Caution Statement”.
Product Information
Gateway Corporate Center, Suite 210
223 Wilmington W Chester Pike• Chadds Ford, PA 19317
7385 • www.dakamericas.com
by injection/stretch blow molding provides optimal barrier and
exceptionally well in the
wall preforms, where heatup rate and temperature profile
, improving acetaldehyde (AA)
,
Test Method
DAK-QAR-SOP-0012
DAK-QAR-SOP-0011
DAK-QAR-SOP-0011
DAK-QAR-SOP-0010
DAK-QAR-SOP-0013
DAK-QAR-SOP-0014
DAK-QAR-SOP-0015
DAK-QAR-SOP-0016
DAK-QAR-SOP-0017
DAK-QAR-SOP-0016
DAK-QAR-SOP-0018
polyethylene terephthalate resin
Product Description
Laser+®(B90A)
Typical Properties
Bi-orientation of Laser+®(B90A)
two-stage processing technology.
perfo
Laser+®(B90A)
A slower crystallizati
Certification
Laser+®(B90A)
Sales Specifications
Property
Intrinsic Viscosity
Color L*
Color b*
Acetaldehyde
Chip Size, nominal
Crystallinity
Melting Point, nominal
Bulk Density
-
®
high injection molding output.
Contact Notification (FCN) 000635
4 for PET polymers
Value Unit
0.84 ± 0.02 dL/g
> 78 CIE
-3.0 ± 2.0 CIE
2 max ppm
0.25 max weight%
0.10 max weight%
53 ± 5 chips / g
> 40 %
3x3x2 mm
241 ºC
54.3 lb / ft³
(B90A)
and Health Canada
These values represent the an
helpful suggestion in the ex
whatsoever in connection with this info
infringement of, any existing patents.
applications, se
DAK Americas LLC
DAK Americas
ISO 9001:2008
1-888-738-2002 • fax: 610-558-
ible
PDS-B90A 120313KH
Laser+®(B90A)
#10004457
Proper drying of polyethylene terephthalate (PET) is essential to produce a high quality part (container,
film, etc.) with optimum physical properties. PET is hygroscopic, meaning that when it is exposed
humid atmospheres, it will absorb moisture. In PET the moisture is not only on the surface but diffuses
slowly through the whole pellet and is firmly held by molecular attraction. Before processing the PET,
this moisture must be removed. Carefully cont
optimum processing performance and final product properties. If drying is not carried out properly, to
the known requirements of the type of PET in use, then deficiencies in process and product will
The deficiencies will be impossible to remedy by later process changes. These defects arise in the
injection molding or extrusion processes because at PET melt temperature (250°
present causes hydrolytic degradation of the PET, a
intrinsic viscosity (IV). Significant drops in IV cause loss of process control and reductions in end
Drying of PET polymer involves the diffusion of absorbed moisture from the
to its surroundings and, subsequently the removal of moisture from the bulk of polymer chips. Moisture
removal can be achieved by heating the polymer chip under dry air or vacuum. In an air drying system,
ir flows up through a chip bed and returns to the dehumidifier. The key
requirements for a reliable drying process are:
The ACTUAL chip temperature should achieve between 300° and 340° F
Correctly designed equipment should operate at temperatures up to
40° F measured on entry to the dryer hopper, with an absolute maximum of 370° F to prevent possible
This should not be allowed to rise above
0° F or lower, measure after the desiccant bed. Always check the correct regeneration temperatures
Dehumidified air flow through the chip bed:
PET chip as a minimum requirement, with the airflow at the correct temperature and dew point.
DAK recommends a chip residence time for Laser+
and preferably six hours. This is the theoretical drying time, which is calculated by
dividing dryer capacity in lbs. by throughput in lb./hr. Extended periods of high temperature can
adversely affect the polymer processing conditions. In the event of a st
dry polymer can be stored in the dryer
Product Information
Gateway Corporate Center, Suite 210
223 Wilmington W Chester Pike• Chadds Ford, PA 19317
7385 • www.dakamericas.com
rolled drying of all PET is an essential requirement for
lmost instantaneously, with the resultant loss in
interior of the polymer chip
34° F and should preferably be
te at around l cfm of airflow per 1lb/hr of
oppage for an extended period,
ir temperature to 240° F (or even
polyethylene terephthalate resin
Material Drying
product properties.
heated dehumidified a
Drying temperature:
measured at the dryer exit.
to
results.
-280° C) any water
Dehumidified air temperature:
3
discoloration.
Dehumidified air dew point:
–4
are being used.
Chip residence time (drying time):
than four hours
lower).
Most dryers opera
-hopper by reducing the a
–
®
PET of not less
DAK Americas LLC
DAK Americas
ISO 9001:2008
1-888-738-2002 • fax: 610-558-
PDS-B90A 120313KH
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