Paint for filter sieve

Paint for filter sieve is a device that separates large particle impurities, lumps, inadequately dispersed pigments and fillers, crusts, and debris from paint. It is mainly used to filter impurities in paint, uniform particles, improve product quality, and ensure the fineness, uniformity and construction performance of paint. It plays a very important role in the production, processing, transportation and use of paint.

Applicable materials for paint for filter sieve

The materials applicable to paint for filter sieve cover all kinds of liquids and suspended solids involved in the production and application of paint. Paint can be applied to many different types of materials, such as wood, metal, concrete, plastic, etc.

Water-based paint Suitable for a variety of surfaces such as wood, gypsum board, concrete, stone, etc.

The role of filter sieves in paint production

Impurity filtration: remove mechanical impurities (such as sand particles, metal debris), undispersed pigment agglomerates or filler particles mixed in during the paint production process to avoid affecting the appearance of the coating (such as particles, brush marks) and performance.

Control fineness: Paint for filter sieve ensures that the fineness of the paint meets the process requirements (such as latex paint, ink and other products that are sensitive to fineness), and improves the gloss and adhesion after film formation.

Stabilize quality: Filtration can reduce quality fluctuations between batches, especially in the color paste mixing and compounding process, to ensure the consistency of paint color and performance.

What is the working principle of Paint for filter sieve?

The working principle of Paint for filter sieve is to use the pore size of the sieve or filter material to separate impurities, particles or unevenly dispersed materials in the paint from qualified paint to achieve purification and classification.

①The pore size of the sieve/filter material as the core component determines the filtration accuracy. If the particles in the paint are larger than the sieve aperture, they will be retained (i.e., impurities); particles less than or equal to the aperture will pass through the sieve and become qualified paint.

②Separation purpose: Remove mechanical impurities (such as sand, metal chips), undispersed pigment agglomerates, flocculants, etc., to ensure that the paint fineness meets the standard.

What are the advantages of Paint for filter sieve?

Handling the problem of pigment sedimentation or bubble entrainment: The paint is left to stand for a long time during the screening process, and the pigment is precipitated or mixed with air, affecting the filtration quality. Use a filtering device with a stirring function or cooperate with a dynamic screening system.

Solve the problem of foreign matter not being removed before packaging: If it is not fully filtered before filling, impurities are prone to sedimentation, mildew, foaming, etc. Closed pipeline transportation with paint for filter sieve can avoid pollution.

Solve the problem of agglomeration and impurities in the paint: Insufficient pigment dispersion, crusting during storage, reaction residues, etc., resulting in the paint being not delicate, and the coating film having a granular feel and pitting. Use a paint for filter sieve with a suitable mesh size (e.g. 80-120 mesh for latex paint) to effectively intercept large particles and foreign matter.

Dealing with the problem of frequent sieve blockage: Viscous paint or sand-containing systems (e.g. floor paint, anti-corrosion paint) easily adhere to the sieve surface, resulting in difficulty in passing through the sieve and low efficiency. Reasonably select the sieve material (e.g. polyester mesh, stainless steel woven mesh), reduce adhesion, control the viscosity of the paint, and properly dilute or circulate before filtering.

Paint for filter sieve mesh size

The mesh size of the paint filter sieve is the core parameter for measuring the size of the sieve aperture, which directly affects the filtration accuracy of the paint and the quality of the finished product. The mesh size is defined as the number of holes per square inch on the sieve. The higher the mesh size, the smaller the aperture, and the finer the particles that can be filtered.

Application of Paint for filter sieve

Paint production stage: before the emulsion, resin, and pigment slurry are put in, the packaging impurities and large particles are removed through the filter sieve to prevent mixing into the production line. Latex paint and water-based paint are passed through a sieve (generally 80 to 300 mesh) before filling to remove fine agglomerates.

Paint coloring and preparation stage: Pigments or additives may bring in undissolved particles, which need to be removed with a filter sieve to avoid color difference and sedimentation of the finished product. Paint for filter sieve can prevent bubbles and dry substances from appearing during the mixing process, affecting batch stability.

Paint filling and transportation stage: Secondary filtration before filling, it is necessary to pass through the sieve again to prevent foreign matter left over from production from entering the packaging barrel; during storage and transportation, viscous paint is prone to crusting or precipitation, and a filter sieve is used to separate impurities to ensure subsequent construction performance.

Paint construction stage: Use a fine sieve (generally 150~300 mesh) to filter the paint to remove lumps or particles; some viscous paints or heavy anti-corrosion paints need to be temporarily filtered on site to ensure a smooth and flawless surface.

In the paint industry, paint for filter sieve runs through all stages from raw material processing, production and processing, product filling to construction application. It is one of the key equipment to ensure paint quality, improve construction efficiency and reduce after-sales problems. If you need more specific product recommendations or technical details, please provide the coating type (such as water-based, oil-based) or filtration accuracy requirements, we can further help you analyze, and Dahan Machinery also supports free trial.