Barium sulphate(BaSO4)is one of the most commonly used mineral modification agents
Advanced blown film extrusion line can process various materials,such as:polyolefin,blocking layer and viscosity resin,as well as a variety of additives,such as masterbatch and biopolymers.
In general,these resins can be used as a granule,which can be produced in the reactor or mixed with additives before being sent to the converter.
The thin-film makers mix these resins,additives and mother materials to produce a variety of blown films of up to 11 layers.
Mineral modifiers provide an opportunity for economic production of films.
At the same time,the mechanical properties of polyolefin films have been improved and the thickness is greatly reduced.
Barium sulfate is one of the most commonly used mineral modification agents.
Barium sulphate powder can be directly added to the film processing line
Barium sulfate is usually added to the polyolefin in the form of a filler.
However,some special production lines can directly add the barium sulphate powder to the production process of pipe and polypropylene tablet.
Use of warm springs in Germany,Mr Hao homes blown film co.,LTD.,the latest research and development of Evolution super fusion technology,manufacturers have been blown film processing production line barium sulfate powder can be added directly.
These integration the fusion technology of production lines are equipped with a special synthetic REItruder rotating twin screw extruder,and is designed to be single line or are equipped with two standard extrusion machine for the production of ultra-thin surface of three layers of the production line.
Barium sulphate for the advantage of blowing film
However,it is important to note that choosing the right type of barium sulfate powder is the precondition of outstanding performance in plastic applications,such as:right certain particle size distribution,high purity and optimization of surface treatment.
Why does barium sulfate apply to blow plastic films?
In addition to the adhesion resistance,calcium carbonate has a variety of performance,such as:higher mechanical properties and optical properties as well as other specific functions related to cost savings.
In addition,it also changes the physical properties of the polymer melt.
Barium sulphate has a higher density,thermal conductivity and lower heat capacity than the unfilled polyolefin,and can maintain solid form in the extrusion process.
Therefore,the main characteristic of this is:
Increase the output of extruder
Reduce melt pressure and extruder torque
Improve the efficiency and speed up the cooling of the membrane
The melt homogenization
In conclusion,the addition of barium sulfate to the production line of the blown film is a simple and effective way to increase production efficiency and yield.
Add the benefits of barium sulphate to blow plastic film
(1)improve the film performance
In the semi-crystalline polymer matrix,the fine surface treatment of barium sulphate improves the performance of the blown film,such as:
Increase stiffness
Improve the impact performance of the drop hammer
The anti-adhesion effect
Increase the resistance to tear and spread(elmandorf)
Improve blocking performance
Slightly increase surface tension
Unstretched:increasing the film density
Stretch:reduces density and penetrates when necessary
The variation in the performance of these polymers depends largely on the membrane component,the thickness of the film,the mineral content,and the type of barium sulfate.
Barium sulfate successfully applied to the instance of blown film including shopping bags,vest bags,garbage bags,paper thin film,agricultural film,heavy bags and back film.
(2)reducing the cost of the recipe
The addition of barium sulphate increases the film density,so it is necessary to reduce the thickness of the film to maintain a constant membrane weight,known as downward measurement.
It is worth noting that there is no linear relationship between this growth and mineral content.
For example,the content of barium sulfate is 30%and the thickness of the film is reduced by 20%.
(3)increase sustainability
The entire process chain also saves energy.
By mixing the barium sulphate powder,the superfusion technology also offers higher sustainability.
The process saves heat in the extrusion process because these minerals have a much lower heat than the polymer.
From this result,the technology can significantly reduce the carbon footprint of the product and its impact on the environment.
(4)the advantages of direct loading
The direct addition of barium sulphate can save the cost of raw materials in large quantities,the potential of cost savings.
source：未知
time :2017-06-12 23:01
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