Filtration In The Process of Fine Chemicals

Fine chemicals are industries that produce complex, single, pure chemical substances through multi-step chemical or biotechnological processes. Among the fine chemicals, filters are widely used in the production of paints and inks. Paint is a material that you can find anywhere in our life. In addition, it is also an engineering material that plays a role of protection, decoration and special function in various industrial products. Ink is an important material used for printing that displays patterns and words on the printing stock through printing or spray painting. Hanke is equipped with a professional technical team to provide you with customized fine chemical filtration solutions.

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Fine Chemical Filtration Solutions

Stainless steel pipes and water tanks are placed in the workshop.

Paint & Ink Filtration

Paint & Ink Filtration

Background
Essentially, the process of paint and ink production is to break up the pigment solid particles by external forces and disperse them in resin solutions or emulsion to form a uniform, fine suspended dispersion. The general process of paint and ink production includes pre-dispersion, grinding, modulation, filtration, and canning.
Problem
In the production process, they are always at risk of being contaminated. For example, when adding pigments and fillers, some mechanical impurities may be brought in; when grinding and dispersing, the paint slurry will be mixed with broken grinding media like glass beads; in addition, there are also pigment particles that have not been sufficiently ground, clumps and gels in the process of paint production. These impurities not only lead to uneven coating, but also may clog the nozzles when the paints are used.
Solution
Therefore, in the process of paint and ink production, filtration is required to ensure the quality of the product, and filters are usually installed before canning.
Generally, bag filters , scraper self cleaning filters and pneumatic disc filters are employed for paint & ink filtration. Typically, bag filters are recommended for filtering water-soluble paints or paints with a low viscosity (dynamic viscosity ≤ 1 mPa.s) while scraper self cleaning filters and pneumatic disc filters are recommended for paints with a high viscosity.

Paint & ink production flow chart

Bag filters installed in the paint production workshop for paint filtration

Bag filters for paint & ink filtration