RU2508988C1 - Method of making window and door pvc sections containing silver ions with antibacterial action - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to construction, particularly, to production of door and window polymer sections. Technical effect is reached in the method of making the door and window PVC sections. Note here that section composition dry components are mixed with addition of silver-bearing substance. Then, produced mix is fed to vibrating screen for sieving. Now, produced mix is cured for at least one day and fed to extruder.

EFFECT: long-term antibacterial properties.

10 cl, 1 tbl, 8 ex

Description

The invention relates to the field of construction and is intended for the manufacture of PVC profiles for window and door blocks containing silver ions with antibacterial properties.

Microbiological corrosion of building and finishing materials causes significant damage to finished structures, so the question of preventing damage caused by microorganisms, molds and other organisms harmful to humans is extremely important. The complexity of the problem is compounded by the fact that microorganisms have the ability to adapt to new living conditions, in particular to chemicals used to destroy them.

The growth of microorganisms on polymeric material can lead to the formation of mucus, spots, microcracks, mycelium, and the appearance of a smell. Found in many cases, and deeper damage. The stability of PVC window structures depends on the micro-resistance of the individual components of the composition.

In addition to the components of the formulation, which should have the least susceptibility to microbes and mold, we add a silver-containing substance to give antimicrobial properties to the profile for window and door blocks, and a beneficial effect on humans.

Silver has low physiological activity; it is harmless to humans and domestic animals.

Action on the person.

Tests at the Federal State Budget Institution Scientific Research Institute of Disinfectology of Rospotrebnadzor in Moscow dated December 20, 2011 established that the profile for window and door blocks containing silver ions has an antimicrobial effect, including against bacteria S.aures (staphylococcus) and E. coli (E. coli ), providing after 24 hours the reduction of contamination of the profile surfaces to 79.3%.

The chemistry of the process.

Metals, depending on the position in the table of D.I. Mendeleev, can enter into various reactions with PVC. The principle of binding in the macromolecule of PVC free Cl with the help of lead Pb is the basis for the stabilization of polyvinyl chloride from thermal degradation.

As for silver ions, Ag, being added to PVC in small quantities, they do not affect the stabilization of PVC, that is, they do not participate in a qualitative reaction. When added in large quantities (1: 1), Ag silver does not affect the rate of dehydrochlorination of PVC in the absence of HCl, but, like mercury, it reduces the rate of autocatalytic decomposition of PVC, i.e., when PCI is left in the reaction zone.

The prior art method for manufacturing a profile material suitable, in particular, for the manufacture of windows and doors using thermoplastic material, by thermoplasticizing the material and continuous profile molding of thermoplastic material, comprising the following operations: the formation of the first component of the mixture from thermoplastic plastic waste; preparing the second component of the mixture containing additives; intensive mixing of the first and second component of the mixture with each other, compaction and, by thermoplasticization of the first component of the mixture, preparation of the mixture suitable for continuous profile molding. A mixture suitable for continuous profile molding is injected under pressure into the profile-forming channel until it is filled, a thick-walled profile billet is formed in it, at least partially cured by cooling, and then removed from the profile-forming channel in the form of a length corresponding to the length of the profile-forming channel; the profile billet is subjected to a shrinkage process in individual sections during the holding time, and the holding time is sufficient for a substantial part of the total expected shrinkage to occur; after the exposure time, the profile workpiece is subjected to shaping by cutting by cutting with removal of material, at least on certain parts of its perimeter with the formation of an intermediate profile; on the intermediate profile, at least part of its perimeter is coated in the form of a layer that improves the surface (RU 2177412, 12.27.2001).

A known process for the production of profiled materials, in particular for the production of doors and windows, in which a component of a thermoplastic material and a second component containing additives, are mixed and compacted to form a mixture. Thus, the thermoplastic component is thermally plasticized. The forming mixture is formed into a profile material, which can then be further processed into a mold and coating to form the final product (US 6237208, May 29, 2001).

A known method of manufacturing from polyvinyl chloride (PVC) foamed wood-plastic windows from sectional material, in which the sectional material is obtained from the following raw materials, in parts by weight: 60-85 parts of PVC, 10-25 parts of wood fiber, 0.2-0, 8 parts of a foaming agent azodicarbonamide, 4-8 parts of a pricing regulator, 5-8 parts of a stabilizer, 1-6 parts of a high impact modifier, 8-15 parts of calcium carbonate and 2-6 parts of epoxidized soybean oil. The preparation of the method includes the following steps: the raw material is placed in a high-speed mixer and mixed, after mixing the raw materials evenly, the mixture is delivered to a cold mixing machine, cooled to room temperature and unloaded for later use, and then extruded in a granulation extruder (CN 102108168, 06/29/2011 )

The disadvantage of the obtained profiles is that they do not have antibacterial properties. In addition, the disadvantage of the first method is its low productivity, and the second method (the manufacture of PVC foamed wood-plastic windows from sectional material) is the significant manufacturing complexity, the inability to obtain this profile on conventional mixing and extrusion equipment - it is necessary to have more sophisticated additional processing equipment wood-filled mixtures and foamed profiles.

The technical result achieved by the implementation of this invention is to obtain a polymer profile for window and door blocks with stable antibacterial properties by adding silver-containing substances (silver ions) in the preparation of the PVC composition, which allows you to evenly distribute silver ions in the mass of the profile due to which bactericidal properties of the entire profile are ensured, which are maintained throughout the operation of the profile, since silver ions are located not only on the surface of the profile la, but also the inside of it (i.e. not used up as if silver ions are deposited as a coating on the airfoil surface).

The specified technical result is achieved in a method for manufacturing a PVC profile for window and door blocks, in which at the mixing unit dry components of the profile composition are mixed with the addition of silver-containing substance, then the resulting dry mixture is sent to a vibrating screen for sifting, after which the dry mixture is kept for at least 1 day and served on the extruder.

On the extruder, under the influence of mechanical loads and temperature, the dry mixture passes into the molten mass, which leaves through the die to shape the profile, then the mass is fed to calibrators, where the mass is cooled and imparted to the finished profile under the influence of vacuum and cold water.

The mixing installation consists of a hot mixing mixer, providing heating of the composition to a temperature of 90-140 ° C, and a cold mixing mixer, providing cooling to 20-90 ° C, while the silver-containing substance is added either to the hot mixing mixer or to the cold mixing mixer.

Additionally, after the calibrators, the profile in the form of a continuous tape is sent through the cooling baths, where, under the influence of cold water with a temperature of 10-14 ° C, the final cooling takes place, then the cooled profile passes to the gluing station of a self-adhesive protective film and a cutting device, on which the profile is cut into whips, after that, chopped profile whips are laid on a pallet.

The mass is directed through the cooling baths at a constant speed, which is carried out and regulated by a caterpillar exhaust device.

The mixing installation consists of a hot mixing mixer, providing heating of the composition to a temperature of 90-140 ° C, a cold mixing mixer, providing cooling to 20-90 ° C, and a mixing device, to which a silver-containing substance is added.

The mixing unit is designed as a conveying device.

The conveying device is either a pump, or pneumatic transport, or augers, or a conveyor belt.

As the silver-containing substance, any substance containing silver ions is used, for example, either silver nitrate AgNO3, or silver proteinate, or silver arceinate Ag ₃ AsO ₄ , or tritioorthoarsenite silver (I) Ag ₃ AsS ₃ , or silver bromide AgBr, or silver bromate ( I) AgBrO ₃ , or Silver (I) AgCl chloride, or Silver (III) silver oxide (I) Ag ⁺ Ag ³⁺ O ₂ (Ag ₂ O ₂ ) and other silver-containing substances.

A method of manufacturing a PVC profile for window and door blocks is as follows.

Factors affecting the mixing of the PVC composition.

PVC composition for the production of profiles for window and door blocks with silver ions with antimicrobial properties is a multicomponent system for which mixing is a mandatory operation. In this case, the main attention should be paid to the homogeneity of the mixture, since the uniform distribution of all components of the formulation, and silver-containing substances in particular, is the main condition for antimicrobial treatment of the entire mass of the profile. The process of mixing is affected by the state of aggregation of the products being mixed, the difference in their densities, particle size distribution and morphology, the order of introduction of the components, the mixing mode, the order of introduction of solid components is reflected both in the rate of heating of PVC and, consequently, in the duration of the mixing cycle and in dispersion components and their effectiveness. Lubricants are best administered after mixing PVC with other additives at a temperature of about 20 ° C below the desired final temperature and at a higher stirrer frequency. It is recommended to add lubricant to the window profile composition at 100 ° C, then bring the temperature to 120 ° C and quickly cool the composition by transferring it to a cold mixer. In order to avoid excessive heat load, the resulting hot PVC composition from the high-speed hot mixer should be converted to cold and cooled with slow stirring to 35-40 ° C.

PVC choice

To prepare a PVC composition with silver ions, it is necessary to take into account the role of each component in the composition of the composition, the possibility of their interaction with each other, with the products of PVC degradation, with atmospheric oxygen and other chemical agents. The processing efficiency of compositions of the same composition according to the same technological scheme differs significantly depending on the properties of the original powdered PVC.

The main indicators that determine the behavior of PVC during processing into a silver-containing window profile, as well as its properties, include the molecular weight of the polymer, the morphological characteristic of the grain, average particle size, pycnometric density, and thermal stability. The main indicator, which can optionally be changed within wide limits due to a change in the polymerization temperature or due to the introduction of various additives (chain growth regulators or comonomers), is the molecular weight.

Most often, PVC with a Fikentcher constant of 50-75 is used to process hard products on an extruder. In our case, you can use suspension PVC with a constant of F 60-72.

For industrial PVC grades used for profile extrusion for window and door blocks containing silver ions, bulk density is very important, which determines the productivity of extrusion lines and the cost-effectiveness of transporting PVC.

To obtain a bactericidal profile for window and door blocks with silver ions, it is necessary to achieve homogenization - a uniform distribution of silver ions in the polymer profile. Good distribution can be achieved by adding a silver-containing substance in the preparation of the PVC composition at the mixing stage. The distribution of silver ions is necessary so that the entire surface of the profile has bactericidal properties.

The dry components of the composition for the production of the window profile - PVC, filler, stabilizer, additives, as well as a silver-containing substance containing silver ions, are hung according to the recipe and fed to the mixing unit (mixing line) - to the mixing stage.

The composition for the antimicrobial window profile:

Component Name Mass parts Characteristics PVC one hundred The production method is suspension, the Fikentcher constant is 64-70, the molecular weight is 9-170 thousand; density - 1.35-1.43 g / cm ³ . Glass transition temperature - 75-80 ° C (for heat-resistant grades - up to 105 ° C), melting temperature - 150-220 ° C. Hard combustible. At temperatures above 110-120 ° C, it is prone to decomposition with the release of hydrogen chloride Cl CaCO3 6-15 Syngonia Trigonal Color White Shine Glass Transparency Transparent Hardness 3 Cleavage Very perfect Kink Crayfish Density 2.71 g / cm ³ Refractive index nω = 1,640-1,660 nε = 1,486 Integrated Lead-Based Stabilizer 2-4 Lead content - 20-40% Impact Modifier 3-6 It is a granule of butyl acrylate rubber in a PMMA shell and is used to improve the mechanical properties, impact resistance and elasticity of PVC. Gives PVC excellent toughness at low temperatures and good resistance to atmospheric factors, highly effective. Titanium dioxide 2-4 Titanium dioxide - colorless crystals (yellow when heated). For technical purposes, it is used in a crushed state, representing a powder. Insoluble in water and dilute mineral acids.
- Melting point - 1870 ° C
- Boiling point - 2500 ° С.
- Density at 20 ° C: 4.235 g / cm ³
- Decomposition temperature 2900 ° С Silver-containing substance 0.002-0.01 m.h Colorless rhombic crystals. The density of 4.352 g / cm ³ . Melting point 209.7 ° C. At temperatures above 300 ° C decomposes. Solubility in water (g / 100 g): 122.2 at 0 ° C; 222.5 at 20 ° C; 770 at 100 ° C. Solubility in methyl alcohol 3.6 g / 100 g; in ethanol 2.12 g / 100 g; in acetone 0.44 g / 100 g; in pyridine 33.6 g / 100 g (all solubilities at 20 ° C). Formula: AgNO3

The mixing installation includes a hot mixing mixer, providing heating of the composition to a temperature of 90-140 ° C, and a cold mixing mixer, providing cooling to 20-90 ° C.

Dry components of the composition / raw materials (PVC, filler, stabilizer, additives) are fed to the hot mixing mixer. In the hot mixing mixer due to friction and (or) additional heat supply, the components of the composition are heated and the composition is uniformly distributed. Mixing is carried out to a temperature of 90-140 ° C (the heating temperature depends on the properties that need to be given to the finished composition), then the composition is poured into a cold mixing mixer, where during slow rotation there is cooling to a temperature of 20-90 ° C (the cooling temperature depends on the method its further processing).

The silver-containing substance is added either to the hot mixing mixer or to the cold mixing mixer.

As the silver-containing substance, any substance containing silver ions is used, for example, silver nitrate AgNO3 (98-99% silver), silver proteinate (85-99% silver), silver arceinate Ag ₃ AsO ₄ (85-99% silver), silver bromide AgBr (85-99% silver), silver (I) chloride AgCl (85-99% silver), silver (III) silver oxide (I) Ag ⁺ Ag ³⁺ O ₂ (Ag ₂ O ₂ ) (85-99 % silver) and other silver-containing substances.

The resulting dry mixture is sent to a vibrating screen for sifting from dirt and lumps of the mixture. After sifting, the dry mixture is aged for at least 1 day before being fed to the extruder (extrusion line).

Next, the prepared dry mixture, after settling, is fed to the extruder, where, under the influence of mechanical loads and temperature, the dry PVC composition transitions to the molten state - mass.

The molten mass leaves the extruder through a die, which gives shape to the PVC profile.

From the die, the hot composition passes to calibrators, where, under the influence of vacuum and cold water, the PVC profile is pre-cooled and acquires the final geometric dimensions. After the calibrators, the PVC profile in the form of a continuous tape passes through the cooling baths, where, under the influence of cold water with a temperature of 10-14 ° C, the profile is finally cooled. A constant profile exit speed is carried out and regulated by a crawler exhaust device.

Then the profile passes to the gluing station of a self-adhesive protective film and a cutting device, on which the profile is cut into whips of a certain length.

After that, the chopped profile whips are stacked on a pallet, packed in plastic film, labeled and sent to the warehouse.

Example 1. Adding a silver-containing substance to a hot mixing mixer.

Dry components of the composition:

PVC - 100 mph

CaCO ₃ - 6 m.h.

Integrated lead-based stabilizer - 2 mph

Impact modifier - 3 m.h.

Titanium Dioxide - 2 m.h.

Silver nitrate - 0.002 m.h

and silver nitrate AgNO ₃ - 0.002-0.01 parts by weight containing silver ions) are fed to a hot mixing mixer. The time interval for adding a silver-containing substance does not matter, you can enter it at the beginning, in the middle or at the end of the mixing and heating process, this does not affect the quality of the distribution of silver ions in the composition. In the hot mixing mixer due to friction and (or) additional heat supply, the components are heated and the composition is uniformly distributed. Mixing is carried out to a temperature of 90 + -10 ° C (this temperature allows you to obtain the following properties of the finished composition: a sufficient distribution of PVC, filler, additives and silver in the composition, swelling of PVC, the transition of additives to the surface of the polyvinyl chloride particles), then the composition is poured into a cold mixer mixing, where during slow rotation there is cooling to a temperature of 30 + -10 ° C (this cooling temperature allows you to use the processing method: the minimum aging time of the composition). The composition for the production of a bactericidal window profile with silver ions is ready. In this embodiment, when silver-containing material is added directly to the hot mixer, a uniform distribution of silver ions occurs in the mass of the PVC composition. Then it is sent to a vibrating screen for sifting from dirt and lumps of the mixture. After sifting, the dry mixture is aged for at least 1 day and fed to the extruder.

The hot mixing mixer may consist of a fixed cylindrical chamber and blades inside, during rotation of which, due to the friction force between the components of the PVC composition, heating occurs. And cooling in a cold mixing mixer can occur due to the circulation of water in the inner jacket of this mixer.

Example 2. The addition of silver-containing substances in the mixer hot mixing.

Dry components of the composition:

PVC - 100 mph

CaCO ₃ - 7 m.h.

Integrated lead-based stabilizer - 3 m.h.

Impact modifier - 5 m.h.

Titanium Dioxide - 3 m.h.

and silver arceinate Ag ₃ AsO ₄ - 0.007 mh, containing silver ions) are fed to a hot mixing mixer. In a hot mixing mixer, the components are heated and the composition is uniformly distributed. Mixing is carried out to a temperature of 110 + -10 ° С (this temperature allows to obtain the following properties of the finished composition: good distribution of PVC, filler, additives and silver in the composition, PVC swelling, transfer of additives to the surface of polyvinyl chloride particles), then the composition is poured into a cold mixer mixing, where during slow rotation there is cooling to a temperature of 60 + -10 ° С (this cooling temperature allows you to use the processing method: operation through granulation, reduction of energy costs and heating in an extruder). The composition for the production of a bactericidal window profile with silver ions is ready. In this embodiment, when silver-containing material is added directly to the hot mixer, a uniform distribution of silver ions occurs in the mass of the PVC composition. Then it is sent to a vibrating screen for sifting from dirt and lumps of the mixture. The sieved composition is fed to the granulator without prior aging. After sifting, the dry mixture is aged for at least 1 day and fed to the extruder.

Example 3. The addition of silver-containing substances in the mixer hot mixing.

Dry components of the composition:

PVC - 100 mph

CaCO ₃ - 10 m.h.

Integrated lead-based stabilizer - 2.5 mph

Impact modifier - 4 m.h.

Titanium Dioxide - 3 m.h.

and AgBr silver bromide (85-99% silver) —0.005 mph containing silver ions) are fed to a hot mixing mixer. In a hot mixing mixer, the components are heated and the composition is uniformly distributed. Mixing is carried out to a temperature of 130 + -10 ° С (this temperature allows to obtain the following properties of the finished composition: good distribution of PVC, filler, additives and silver in the composition, PVC swelling, transition of additives to the surface of polyvinyl chloride particles, the possibility of processing PVC with a high Fikentcher constant ), then the composition is poured into a cold mixing mixer, where during slow rotation there is cooling to a temperature of 30 + -10 ° C (this cooling temperature allows you to use the processing method: The composition is defended until a temperature of 20-25 ° C is reached, and then processed into a window profile). The composition for the production of a bactericidal window profile with silver ions is ready. In this embodiment, when silver-containing material is added directly to the hot mixer, the necessary distribution of silver ions in the mass of the PVC composition occurs. Then it is sent to a vibrating screen for sifting from dirt and lumps of the mixture. After sifting, the dry mixture is aged for at least 1 day and fed to the extruder.

Example 4. The addition of silver-containing substances in the cold mixer.

Dry components of the composition:

PVC - 100 mph

CaCO ₃ - 15 m.h.

Complex stabilizer based on lead - 4 m.h.

Impact modifier - 6 mph

Titanium Dioxide - 4 m.h.

served in a hot mixer. In the hot mixing mixer due to friction and (or) additional heat supply, the components of the PVC mixture are heated and the composition is uniformly distributed. Mixing is carried out to a temperature of 90 + -10 ° C (this temperature allows you to obtain the following properties of the finished composition: a sufficient distribution of PVC, filler, additives and silver in the composition, swelling of PVC, the transition of additives to the surface of the polyvinyl chloride particles), then the composition is poured into a cold mixer mixing, where during slow rotation there is cooling to a temperature of 30 + -10 ° C (this cooling temperature allows you to use the processing method: the minimum aging time of the composition). Silver-containing substance Silver (I) chloride AgCl in an amount of 0.01 m.h. added to the cold blender. The time of introduction of the silver-containing substance does not matter, you can enter at the beginning, middle or end of the cooling process. The composition for the production of a bactericidal window profile with silver ions is ready. In this embodiment, when silver-containing material is added directly to the cold mixer, a uniform distribution of silver ions occurs in the mass of the PVC composition. Then it is sent to a vibrating screen for sifting from dirt and lumps of the mixture. After sifting, the dry mixture is aged for at least 1 day and fed to the extruder.

The hot mixing mixer may consist of a fixed cylindrical chamber and blades inside, during rotation of which, due to the friction force between the components of the PVC composition, heating occurs. And cooling in a cold mixing mixer can occur due to the circulation of water in the inner jacket of this mixer.

Example 5. The addition of silver-containing substances in the cold mixer.

Dry components of the composition:

PVC - 100 mph

CaCO ₃ - 13 m.h.

Integrated lead-based stabilizer - 3.5 mph

Impact modifier - 4.5 mph

Titanium Dioxide - 2.5 m.h.

served in a hot mixer. In the hot mixing mixer due to friction and (or) additional heat supply, the components of the PVC mixture are heated and the composition is uniformly distributed. Mixing is carried out to a temperature of 115 + -10 ° С (this temperature allows to obtain the following properties of the finished composition: good distribution of PVC, filler, additives and silver in the composition, PVC swelling, transfer of additives to the surface of polyvinyl chloride particles), then the composition is poured into a cold mixer mixing, where during slow rotation there is cooling to a temperature of 60 + -10 ° С (this cooling temperature allows you to use the processing method: operation through granulation, reduction of energy costs and heating in an extruder). The silver-containing substance, silver nitrate AgNO ₃ in an amount of 0.009 mph is added to the cold mixing mixer. The composition for the production of a bactericidal window profile with silver ions is ready. In this embodiment, when silver-containing material is added directly to the cold mixer, a uniform distribution of silver ions occurs in the mass of the PVC composition. Then it is sent to a vibrating screen for sifting from dirt and lumps of the mixture.

Example 6. The addition of silver-containing substances in the cold mixer.

Dry components of the composition;

PVC - 100 mph

CaCO ₃ - 9 m.h.

Integrated lead-based stabilizer - 2 mph

Impact modifier - 5 m.h.

Titanium Dioxide - 3 m.h.

containing silver ions) are fed to a hot mixing mixer. In the hot mixing mixer due to friction and (or) additional heat supply, the components of the PVC mixture are heated and the composition is uniformly distributed. Mixing is carried out to a temperature of 130 + -10 ° С (this temperature allows to obtain the following properties of the finished composition: good distribution of PVC, filler, additives and silver in the composition, PVC swelling, transition of additives to the surface of polyvinyl chloride particles), then the composition is poured into a cold mixer mixing, where during slow rotation there is cooling to a temperature of 80 + -10 ° С (this cooling temperature allows you to use the processing method: operation through granulation, reduction of energy costs and heating in an extruder). The silver-containing substance silver arseinate Ag ₃ AsO ₄ in an amount of 0.004 m.h. added to the cold blender. The composition for the production of a bactericidal window profile with silver ions is ready. In this embodiment, when silver-containing material is added directly to the cold mixer, a uniform distribution of silver ions occurs in the mass of the PVC composition. Then it is sent to a vibrating screen for sifting from dirt and lumps of the mixture.

Example 7. The addition of silver-containing substances during additional process steps.

Dry components of the composition:

PVC - 100 mph

CaCO ₃ - 11 m.h.

Complex stabilizer based on lead - 4 m.h.

Impact modifier - 5 m.h.

Titanium Dioxide - 3.5 m.h.

containing silver ions) are fed to the mixing stage, first to the hot mixing mixer, which ensures the composition is heated to a temperature of 90-140 ° С (due to friction and / or additional heat supply), and then it is poured into the cold mixing mixer, which provides cooling to 20- 90 ° C. Then, the composition is supplied to the mixing device, for example, a mixer, mixer, “drunk barrel”, etc., where silver-containing substance AgBr silver bromide is added in an amount of 0.008 m.h. mixing occurs due to the rotation of the device. In this embodiment, when silver-containing substance is added during an additional technological operation, a uniform distribution of silver ions occurs in the mass of the PVC composition. Then it is sent to a vibrating screen for sifting from dirt and lumps of the mixture.

Example 8. Mixing using a pump. Pre-prepared PVC compositions;

PVC - 100 mph

CaCO ₃ - 12 m.h.

Integrated lead-based stabilizer - 3.7 mph

Impact modifier - 4.5 mph

Titanium Dioxide - 2.7 mph

stir into the tank, a silver-containing substance is added there: silver nitrate AgNO ₃ in an amount of 0.006 m.h. Mixing occurs due to the joint passage of the composition and the sulfur-containing substance through the conveying device (pump, pneumatic conveying, screws, belt conveyor, etc.). Composition for the production of bactericidal window profile is ready. With this option, the addition of silver-containing substances by means of a pump there is a uniform distribution of silver ions in the mass of the PVC composition. Then it is sent to a vibrating screen for sifting from dirt and lumps of the mixture. After sifting, the dry mixture is aged for at least 1 day and fed to the extruder.

Claims (10)

1. A method of manufacturing a PVC profile for window and door blocks, characterized in that the mixing unit mixes the dry components of the profile composition with the addition of a silver-containing substance, then the resulting dry mixture is sent to a vibrating screen for sifting, after which the dry mixture is kept for not less than 1 day and served on the extruder. 2. The method according to claim 1, characterized in that on the extruder under the influence of mechanical loads and temperature, the dry mixture passes into the molten mass, which exits through the die to shape the profile, then the mass is fed to calibrators, where under the influence of vacuum and cold water the mass is cooled and attached to the geometric shape of the finished profile. 3. The method according to claim 1, characterized in that the mixing device consists of a hot mixing mixer, providing heating of the composition to a temperature of 90-140 ° C, and a cold mixing mixer, providing cooling to 20-90 ° C, while adding a silver-containing substance or to a hot-mixing mixer, or to a cold-mixing mixer. 4. The method according to claim 2, characterized in that, in addition, after the calibrators, the profile in the form of a continuous tape is sent through cooling baths, where, under the influence of cold water with a temperature of 10-14 ° C, the final cooling takes place, then the cooled profile passes to the gluing station with a self-adhesive protective films and a cutting device on which the profile is cut into whips, after which the cut profile whips are laid on a pallet. 5. The method according to claim 4, characterized in that the mass is directed through the cooling baths at a constant speed, which is carried out and regulated by a caterpillar exhaust device. 6. The method according to claim 1, characterized in that the mixing device consists of a hot mixing mixer, providing heating of the composition to a temperature of 90-140 ° C, a cold mixing mixer, providing cooling to 20-90 ° C, and a mixing device, in which add silver-containing substance. 7. The method according to claim 1, characterized in that the mixing unit is made in the form of a conveying device. 8. The method according to claim 7, characterized in that the conveying device is either a pump, or pneumatic transport, or screws, or a conveyor belt. 9. The method according to claim 1, characterized in that the composition contains the following ratio of dry components, wt.%:
PVC 100 mph CaCO ₃ 6-15 mph Integrated Lead-Based Stabilizer 2-4 mph Impact Modifier 3-6 mph Titanium dioxide 2-4 mph Silver-containing substance 0.002-0.01 m.h. 10. The method according to claim 1 or 9, characterized in that as the silver-containing substance, either silver nitrate AgNO ₃ , or silver proteinate, or silver arceinate Ag ₃ AsO ₄ , or tritioorthoarsenite silver (I) Ag ₃ AsS ₃ , or bromide are used AgBr silver, or silver (I) bromate AgBrO ₃ , or silver (I) chloride AgCl, or ceppra (III) oxide (III) Ag ⁺ Ag ³⁺ O ₂ (Ag ₂ O ₂ ).