Bosch Packaging Technology
Emerson’s Early Involvement with Bosch Solves
a Tough Application Challenge for its Packaging
Technology Division
Background
Through its Packaging Technology Division, Bosch is a leading provider of process and
packaging technology. In addition to providing filling, process, and packaging
equipment for pharmaceutical products and confectionery, Bosch Packaging Technology
offers packaging solutions for cargo and bulk materials in the food industry.
Consistent, uncompromised quality for such sensitive products is paramount. When
packaging food, product characteristics such as aroma cannot be adversely affected.
As a result, Bosch Packaging Technology developed the VIS flavor protection valve.
It protects the flavor of the coffee in the packaging even after prolonged storage.
The VIS valve is installed inside a bag and permits the degassing of the bag into the
environment. The valve also prevents oxygen from entering the package which can
compromise the quality and aroma of the contents.
Challenge
The internal VIS valve from Bosch Packaging Technology must ensure the best possible
aroma protection for the package contents without compromising the appearance
of the bag.
The VIS valve consists of two parts: the injection-molded base body of polyethylene
with a woven filter medium and the valve diaphragm. The valve itself is welded onto
the packaging foil in a machine that forms, fills, and seals the bag with a separate valve
applicator to create a sealing module.
Bosch Packaging Technology machines are renowned for highly reliable performance
and low packaging costs. But the most important production requirement for the VIS
valve application is a welding technology that ensures a secure connection between the
valve and the bag foil with high weld repeatability and consistent valve function. The
application’s requirement for rapid cycle times further complicated the challenge.
The Emerson Solution
Bosch Packaging Technology needed an alternative to the heat-sealing method it
was using and engaged the packaging experts at Emerson’s Branson Ultrasonics.
The Branson team got involved in the early development of this new application,
starting with the selection of materials, the design of the weld seam on the valve
base body, and finally the design of the ultrasonic sealing tools and sealing station.
Case Study
Americas
Branson Ultrasonics Corp.
41 Eagle Road
Danbury, CT 06810, USA
T: 203-796-0400
F: 203-796-0450
www.bransonultrasonics.com
Europe
Branson Ultraschall
Niederlassung der Emerson
Technologies GmbH & Co. OHG
Waldstrasse 53-55
63128 Dietzenbach, Germany
T: +49-6074-497-0
F: +49-6074-497-199
www.branson.eu
Asia
Branson Ultrasonics (Shanghai) Co., Ltd.
758 Rong Le Dong Road
Song Jiang, Shanghai, PRC, 201613
T: 86-21-3781-0588
F: 86-21-5774-5100
www.branson-china.com
Case Study
The Bosch and Emerson experts collaborated
successfully and chose the Branson ultrasonic
DCX A Power Supply and 40kHz Stack with 4TP
Converter to solve the challenge. It provided the
weld repeatability, process monitoring, and long
service life required of all the system components.
Its 40kHz technology was able to produce a tight
weld, even when diverse types of foils were used.
And unlike the previous heat-sealing method, the
DCX ultrasonic technology did not interfere with
the valve function, and provided a weld process
that operated reliably, with flexibility, and rapid
cycle speed to help keep the unit costs per
bag economical.
Results
Emerson’s reliable, user-friendly Branson ultra-
sonic technology satisfied all the requirements
of Bosch Packaging Technology. By providing reli-
able, flexible, ultrasonic welding equipment and
supporting the mechanical integration of those
components through high levels of customer ser-
vice, all standard Bosch VIS valve applications are
now produced with consistent seal strength and
proper valve function.
“In working with Emerson, we appreciate above
all their high degree of reliability and the long-
term, future-oriented partnership we anticipate.”