Bauer GIT BROCHURE

GAS INJECTION TECHNOLOGY – GIT
Innovative and complete solutions
ECONOMICAL
MODULAR
RELIABLE
www.bauer-kompressoren.de
BAUER KOMPRESSOREN offer Gas Injection Technology as a solution to the problems of plastic part production.
The end user will benefit from BAUER’s years of manufacturing experience in the field of GIT and compressor technology with tailor­made systems from one source. Bauer offer starter packs to complex large-scale systems. For a perfect system design, the BAUER team is available and willing to provide on site advice.
GIT-SYSTEMSBAUER KOMPRESSOREN
GIT technology from BAUER - solutions from one source
BRIEF OVERVIEW OF GIT TECHNOLOGY
A procedure similar to GIT was described for the first time in 1972. This technology has a proven reliability and market growth from the 1980’s.
We denote by GIT, the method of blowing gas, especially nitrogen in the plastic, so that a hollow tubular channel is created. Previously, the plastic had been melted and injected into a mould, which for thick pieces of plate, it was not possible to produce a flattened bubble.
THE DIFFERENT TECHNIQUES
There are at least 10 variants of GIT, based on the type of piece produced and its needs. The two most commonly used techniques are briefly explained as follows:
The partial original method, which is to fill 50-90%
of the cavity with plastic. By moving the mass of hot plastic, the gas can finish filling 100% while creating a hollow tubular channel. The holding phase under pressure during the cooling phase is carried by the gas, whose pressure drop just before opening the mould.
Plastic
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The over flow cavity, which requires the addition of
an annex cavity in the tool. After filling the part cavity at 100% with polymer, the gas is injected under pressure and the overflow cavity is open to collect the superfluous plastic. The gas ensures the holding phase pressure during cooling and is purged immediately before opening the mould.
BENEFITS OF GIT
The use of gas assisted injection technology allows production of technical parts with the appearance of superior quality. The manufacturing process is also more efficient, improving productivity and thus significantly increasing profitability.
A better quality of injected part:
- High strength and rigidity
- Dimensional stability, no warpage
- Elimination of sink marks
- No assembly, single parts
Simplification of tools
Freedom in design
Lower clamping force (in partial)
Reduced cycle time
Material saving
Realization of hollow (pipe)
GIT-SYSTEMS
BAUER EXPERIENCE
Our outstanding expertise in purifying gases coupled with software-based control tech­nology developed by our BAUER specialists guarantee you outstanding product quality which will improve profitability.
HIGH PRESSURE COMPRESSOR AND BOOSTER UNITS
Ready for use; compact and autonomous.
A compression of high quality nitrogen thanks
to our P-filter system.
Booster units with low power consumption by
using the inlet pressure of a nitrogen generator or evaporator.
A security operation through an integrated
controller (B-CONTROL).
FCC CONTROL UNIT
A mobile and compact panel.
An adaptive control and therefore very precise
(reactivity adjustable).
Easy and intuitive programming.
A full connectivity to transfer files (USB and Ethernet).
Continuous process monitoring with quality data
storage.
EXCELLENT SERVICE GUARANTEED
For BAUER, „quality“ does not end with the pro­duction and delivery of the system. Independent of the location of the installation, the customer benefits from the excellent and comprehensive after sales service support:
All major spare parts, including wearing parts, for all
models are permanently in stock, and available for immediate dispatch. Parts are guaranteed to be available for up to 25 years after delivery.
An integrated distribution network comprising of
over 50 overseas agencies, plus 360 support distributors are continually available to support our customers.
Maintenance kits for all systems are available
worldwide.
BAUER daughter companies worldwide
GIT-SYSTEMSBAUER KOMPRESSOREN
Structure of the system
System requirements: The following equipment is required to employ gas injection technology in your process.
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Source of nitrogen: Liquid tank, nitrogen bottles or nitrogen generator.
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A high pressure compressor with a suitably sized gas receiver facility for the compression and safe storage of nitrogen at high pressures.
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High pressure lines to transport the nitrogen.
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Distribution panel that generates a pressure- / time profile to dispense the nitrogen.
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