Production of paints and varnishes. Equipment for the production of coatings

20.04.2020 Home insulation

Paint and varnish material (LKM) - a product with the ability, when applied in a thin layer on the product, to form a protective or decorative film (coating) on \u200b\u200bthe surface.

. Range of paints and varnishes (LKM):

Lucky (solutions of film-forming substances in organic solvents or in water, forming a solid, uniform and transparent film after curing (drying)).
Enamels (suspensions of pigments or their mixtures with fillers in varnish, which forms, after drying, an opaque solid film with different gloss and surface texture) - enamels are divided into glossy, semi-gloss, matte, semi-gloss according to the degree of gloss of the enamel.
Paints for interior and exterior use, facade, texture coatings of wood (pigment suspensions with fillers in drying oil, emulsion, latex or other film-forming substance, forming an opaque, uniform film after drying). Paints are divided into oil (based on drying oils) and water based (based on aqueous dispersions of synthetic polymers).
Primers , soils (suspension of pigments with fillers in a film-forming substance, forming after drying an opaque film with good adhesion to the substrate and the protection of metals from corrosion).
Putties (viscous pasty masses consisting of a mixture of pigments, fillers and a film-forming substance and intended to fill in irregularities and recesses of the painted surface).
Drying oil (film-forming liquid obtained by processing vegetable oils with the introduction of desiccants to speed up drying).
PVA dispersion (polyvinyl acetate dispersion is a viscous liquid of white or slightly yellowish color - a universal material with high adhesive ability. It is used in the manufacture of water dispersion paints, putties, primers, PVA adhesives and other building materials).

The dispersion of the pigment is characterized by the size of its particles, which should not exceed the film thickness of the paint coating, otherwise the surface will be uneven, rough. The particle size of the pigment depends on the purpose of the paint material. The best hiding power is achieved when using pigment particles of 0.2-10 microns.

. Waterborne dispersion paints

High-quality water-dispersion paints not only are not inferior to the best oil and perchlorovinyl paints, but also surpass them in a number of indicators (weather resistance and durability of the coating, resistance to pollution, drying speed) and are favorably distinguished by the absence of volatile organic components.

Water-dispersion paints provide a number of technological advantages (the ability to paint wet surfaces; the use of various methods of application (brush, roller, spray, electrophoretic deposition); the safety and lower laboriousness of washing equipment in contact with the paint; transportation and storage of dry paints and "dilution" them immediately before application to the surface).

The quality and manufacturability of coatings, including water dispersion (VDM), is largely determined by the degree and nature of the dispersion of the solid phase - pigments and fillers.
The degree of dispersion and the shape of solid particles directly depends on:

hiding power
protective properties
stability of paint during storage (resistance to delamination).

Water-dispersion paints are conditionally divided into three groups:

paints for general construction purposes (including facade) - particle size 30-70 microns
paints (enamels) for high-class coatings - particle size no more than 15-25 microns
special materials (for example, pigment pastes) - particle size 2-5 microns.

Packing of powder paint in consumer packaging (a box of multilayer corrugated cardboard with an inner polyethylene bag insert) is performed on a special installation according to the following process chain. The finished product after passing the sieve through the dispenser enters the packaging unit - a roller conveyor with electronic scales mounted in the middle. Powder paint enters the box on the scale, when the set mass is reached, the dispenser is automatically turned off. A filled box is conveyed along the conveyor from the scales to the side of the packaging table, and an empty box is moved to the scales for filling. If there is no box on the scale, the supply of the finished product is automatically turned off. The parameters of the filling process are controlled from the control panel of the packaging unit. All necessary information on the performance of the powder paint production line is displayed on the console in real time.
On the packaging table, after sampling and a positive conclusion on the quality of the finished product, tying a plastic bag insert, packaging of the container and its marking are performed.
Product packaging according to GOST 9980.3-86 can be made in various types of consumer or transport packaging. For powder paint, taking into account the special requirements for transportation and storage conditions, the so-called combined packaging is currently the most widely used. It consists of a box (box) of a fixed size (for packing PCs of 20 kg each), made of a 5-layer corrugated cardboard, and a plastic bag-insert. Each part of the container is designed for specific purposes and performs its function: the box is lightweight, easy to carry, protects against mechanical and atmospheric influences, including exposure to direct sunlight; liner - mechanically strong paint storage, hermetically protects from adverse weather conditions. The combination of multilayer corrugated cardboard and polyethylene creates an air barrier from exposure to extreme (especially elevated\u003e 25ºС) temperatures. The packaging operation is completed by tying a plastic bag - liner with a plastic clamp and tying the top of the box using tape.
Then proceed to labeling the package. According to GOST 9980.4-2004 "marking: information applied by the manufacturer directly to containers, labels or tags."
A label with the following information is firmly glued to each packaged product unit without distortions and wrinkles:
- name of the manufacturer and its legal address;
- name of the product and its color;
- net and gross mass;
- name of the technical document for the product;
- basic consumer properties or product characteristics;
- shelf life or warranty period of the product;
- purpose and method of application;
- batch number and barcode symbol.
In addition to GOST 19433, hazard signs and transport marking according to GOST 14192 are applied to the cardboard box - handling signs: “Keep away from moisture”, “Top”, “Keep away from sunlight."
When marking directly on the package, the color of the marking must be contrasted with the color of the package.
Packaged and labeled products are formed into a transport package: boxes with the label facing the outside are stacked on a pallet (pallet) and tied with packaging film. Transport packages of finished products are transferred to a warehouse for storage and shipment to the user.
Storage and transportation of products is performed according to GOST 9980.5-86 in compliance with the manufacturer's specifications. Along with the general rules for transportation and storage of powder paint, a number of features are inherent that should be noted.
During transportation, due to vibration and shaking, some ink compaction may occur in the package. But the sign of caking is not yet a paint defect. It can be quickly and simply eliminated by sieving, shaking or fluidizing.
It is much more important to know if chemical curing processes have occurred. Such a phenomenon can occur when the material has been exposed to temperatures above the allowable limit specified in the manufacturer's specifications and on the package label with the PC. Chemical transformations of the material make it unsuitable for use. Chemical reactions under the influence of elevated temperatures are particularly susceptible to powder paints of rapid or low temperature curing. As a result of chemical aging, not only a decrease in fluidity at the melting stage is observed, but also curing in particles without complete sintering of the powder. Therefore, certain conditions must be observed during the transportation and storage of paints. For transportation of certain types of powder materials with high reactivity, it is sometimes necessary to use vehicles with refrigeration equipment. Most paints, however, do not require special conditions for transportation and storage.
Material that is known for its storage sensitivity should be tested before industrial use. It should be applied to an appropriate substrate and cured in order to verify the characteristics of the film coating. Acceptable results from such testing will create confidence that such a material is suitable for work and will form coatings with good characteristics.
Therefore, it is important to store the material so that it retains these consumer properties. Some of the reasons for changing the properties of paints during storage:
- moisture absorption from the air (for example, due to an open box);
- various pollution (dirt and dust in the area of \u200b\u200bpainting);
- Excessive heat exposure (storage close to heat sources).
Powder material left in the hopper of the feeder or in an open box at night can absorb moisture, which will cause problems with its application. If the problem with moisture absorption is common, it is necessary to take measures in order to get rid of excess moisture. This can be done, for example, by fluidizing the powder in an apparatus or feeder with dry air.
The problem is also the contamination of the paints after opening the package. If the powder is not fully used, the remaining boxes must be resealed. Wrap (tie) plastic bags and tape over corrugated cardboard boxes with tape to ensure that dust, foreign powder and other contaminants do not get into the container and do not spoil the powder. Do not reuse powder containers to store new products. This may cause contamination. Do not store powder paints near the coating line or near ovens. Exposure to excessively high temperatures can lead to sintering or chemical aging of paints.
If the conditions of the place of storage of the paint differ from the conditions of the place of receipt of the coating from it, it should be subject to acclimatization within the coating zone. This is especially necessary when the temperature in the warehouses in which the powder is stored is much lower than in the area where the paint is applied. Such heating may prevent the condensation of moisture on the powder.
Lumps that may form in the powder from time to time can easily be removed by sieving through a sieve. The practice of sifting all the powder before using it is a good guarantee of the success of the coating equipment.
Loading and unloading of powder should always be carried out using mechanical storage equipment and using personal protective equipment. When pouring, the powder easily forms into airborne dust, which can be dangerous if inhaled.
Storage of powder paints in air-powder mixture generators (spraying machines) with plugs installed is allowed for one month at an air temperature of 15-30 degrees and a relative humidity of not more than 80%.
After the warranty period of storage of the PC every two months is subject to verification of compliance with the requirements of TU. The use of paint is allowed only with a positive test result.

According to the GATCHIN POWDER PAINT PLANT

Packaging of hair dye requires the use of bags made of opaque film with internal metallization and a minimum number of seams. The best packaging option for hair dye - flow-pack, sachet, doypak. Materials for the manufacture of bags are matte and glossy barrier films. Paint in bags is not exposed to external factors, does not lose its chemical properties. Packaging design options - euro slot, fitting, tear-off notch. Storage of paint in such packaging is possible in horizontal form. Demonstration on display cases is carried out in an upright position, using special suspensions. Packaging requirements for hair dye are subject to special design requirements. Flexo printing technology allows you to apply images with the most accurate transmission of color shades, which is the main factor when choosing this product by customers. Professional design of the bags is carried out by our specialists at the request of the customer. As additional design elements, you can use partial or complete varnishing of the surface, rounding the corners of the bag, applying holograms. Packing in packaging for hair dye occurs both in automatic mode and in manual mode, depending on the type of package and dosage.

To buy a package for hair dye in Moscow and find out about the price of packages and films with a print for hair dye, please fill out the feedback form by clicking on the “ASK QUESTION” button in the upper or lower right corners of the site, or call the number +7 495 664 51 31 .

10000 pcs
minimum print run

15 days
printing period taking into account the finished flexoform

82%
we print all shipments earlier than the stated deadlines

8 colors
maximum number of colors per package

1260 mm
maximum shaft width

Types of Hair Dye Bags

Doy Pak
(doy pack)

Capabilities:
Installing a zip-lock, installing a punch handle, installing a Euro slot, installing a degassing valve, rounding corners, a notch, a display window, partial or full varnishing