Reducing plastic consumption, resorting to a more greener lifestyle and raising environmental awareness in a worldwide perspective has transformed a lot of manufacturing companies to “go green” in their industrial processes.
For this environmental movement, it has certainly given a great deal of attention to Polyvinyl Alcohol as a contributing substance. In fact, the polyvinyl alcohol market is expected to grow at a CAGR of 4.09% for the forecast period of 2019 to 2023.
As Polyvinyl Alcohol has oxygen barrier properties, soluble in water and has biodegradability properties, it emerges as a fundamental choice for packaging material among the food packaging industry. Plus, it is also resistant to greases and oils.
Indeed, PVOH will surely trudge a long path in its future with many innovative possibilities that would require more critical and sophisticated methods and solutions in many manufacturing process that involves its use.
So as one of the greatest China Industrial Mixer manufacturer, what exactly can Ginhong provide? Read on to know what’s in store for you.
Let’s start on the basics; Polyvinyl alcohol (PVOH, PVA, or PVAl) is a synthetic, water-soluble, odourless and colourless polymer that is used in many coating applications. PVOH is used in papermaking, textiles, pharmaceutics, in adhesives, paints, sealants, plastics and some cosmetic applications.
PVOH has an amazing quality of forming film effectively and has a great potential in emulsifying completely in solutions given the suitable manufacturing conditions and aspects.
It is oftentimes supplied as beads or as Polyvinyl alcohol powder or as PVA solutions in water.
In making PVA solutions, polyvinyl alcohol powder is dissolved in water while gradually heating the solution and intensively stirring the mixture at high speed at a temperature between 90 °C to 100 °C for two hours. For this long duration of process, the end result would result be a clear and transparent PVA solution.
Image source: http://www.j-vp.co.jp/english/product/pva/use.html
Avoiding water evaporation is needed to maintain the consistency of the solution, so a condenser can be used to lower the temperature.
Now that we have covered the basics in making PVA solutions from powders and water, let’s dig deeper into the technicalities of making PVA solutions in a macro industrial perspective.
PVA can be dissolved in hot or cold water. Tap water is a preferred solvent in making PVA solutions as bacterial mitigation may form in distilled water.
A solution would typically be prepared as follows:
Using conventional mixers and agitators, a number of problems can be encountered during production:
Ginhong mixer can effectively disperse and solubilize the powders of PVA in water at an inherently fast rate. The procedure is as follows:
Optimized Yield of Ingredients
Powder is entirely dispersed even before the viscosity rises. Fully dispersed PVA powders and emulsified PVA solution.
Dramatic Reduction of Processing Time
Heating stage is eliminated as hot water is added to dissolve PVA.
Less Air Entrainment
Mixing unit performs in a controlled, closed-loop system, reducing the probability of air entrainment that causes cavitation or formation of bubbles in a liquid.
Fast Inherent Reaction Rates
Intense and enhanced chemical reaction with high degree of concentrated input energy that produce superior dispersion than traditional mixing methods.
Agglomerates can be easily dissolved by the high shear, accelerating solubilization.
Ginhong PVA Solution Mixer can make uniform and homogeneous emulsion, with good physical and chemical properties.
Reduced Waste and Sanitary
The scraper gathers material wastes which can be collected without process interruption.
Consistent Product Quality and Stability
Offers batch-to-batch product consistency and stability with high manufacturing savings.
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