CS255358B1 - Method of complicated thin-walled profiles production from masticated polyvinyl chloride - Google Patents

Description

The invention relates to a process for the production of complex thin-walled PVC profiles, particularly suitable as seals for refrigerators and freezers.

Refrigerator profiles have also undergone, along with improvements in refrigeration units, a certain quality development. From a simple circular sealing profile - a rubber hose, it has gradually come to the use of complex multi-chamber profiles, punched mostly from polymeric thermoplastic materials.

The materials used for this purpose are required in particular to be flexible and flexible over a wide temperature range, from -30 to - (- 50 degrees Celsius, the range between the lowest temperatures inside the freezer and the highest temperatures in the summer months. the shape is achieved by a suitable geometrical design of the profile, ie by the size and thickness of the individual walls of the profile and their spatial arrangement to create cavities - air filled chambers, which ensures low heat transfer from outside to the refrigerator while helping to maintain shape stability throughout the refrigerator and freezer .

Few materials have to meet these high technical demands. Most commonly, the patent literature mentions chlorinated polyethylene, ethylene-vinyl acetate copolymer and mocked PVC. Chlorinated polyethylene and ethylene-vinyl acetate copolymers, however, have the disadvantage of demanding the production process of the primary thermoplastic and hence its high cost, and in addition, even under normal atmospheric conditions they age rapidly, become brittle, brittle, crack, start to disintegrate, its sealing function. Therefore, the center of gravity production has gradually shifted materially to mocked PVC, which normally has a service life of 10 to 15 years.

Conventional mock-up PVC compositions (see Example 1), although they can meet both strength and elasticity requirements in the desired temperature range, are not capable of processing to a high quality composite thin-walled profile of sufficient rigidity, with a hardness requirement of about 70-75 ° Shore A. such PVC compound immediately loses the desired shape behind the die and is additionally harmoniously corrugated, particularly in those sections of the profile where the thinnest wall is, at the rate of melt from the die depending on the thickness of the profile wall, i. j. in a portion having a substantially different outlet wall, the melt flows more slowly, but thinner, and therefore warps, which is also aided by the relatively high elastic component of the melt. The differences in flow rate can be partially compensated experimentally by adjusting the inlet portions and the different lengths of the individual molding elements of the die, but this does not eliminate the effect of the elastic component of the melt. On the contrary, by prolonging the guiding shaping elements, the effect of the elastic component on the larger flat nozzles is manifested and thus the oscillation and the accentuated corrugated ripple are increased.

The size of the elastic component in principle depends on the melt temperature and ceases only at temperatures of about 200 ° C, which values are not usable in terms of profile shaping. Therefore, it is necessary to reduce the dependence of the melt viscosity on the extrusion rate by appropriately interfering with the PVC mixture formulation. j. reduce the sensitivity of the melt to shear gradient changes. Roads to this destination sought in several directions. It was eg. the use of other special thermoplastics with a smaller elastic melt component, or the complicated recipe of mocked PVC using acrylic processability modifiers up to 15 wt. θ / o, with simultaneous application of a polymeric plasticizer in an amount of up to 40 wt. % (see Example 2), which by their extremely long chains shielded the influence of the intermolecular binding forces of the PVC macromolecules and thereby largely eliminated the elastic component of the melt. However, the relatively good profile appearance achieved, on the other hand, resulted in a substantially higher cost of the PVC composition (50-80%), a lower extrusion production rate and, worst of all, the frost resistance was significantly deteriorated, making use in freezers becoming problematic.

We have now found that all the above-mentioned problems and shortcomings of the previous production of profiles can be solved by relatively simple and inexpensive modifications of the PVC compound formulation, while making a suitable choice of processing conditions of extrusion and die dimensions. is described in this invention. The process according to the invention has economic and technical advantages over the prior art, which results in a significantly lower cost of the PVC composition, a substantially higher production speed, less energy consumption, while maintaining all important performance and technical properties and achieving a higher frost resistance of the sealing profile.

In particular, the process of the present invention achieves a smooth surface without harmonic ripple and overall very good profile appearance, furthermore providing a frost resistance of up to -40 ° C, allowing this sealing profile to be used not only in refrigerators but also in freezers. Another advantage is the possibility of extrusion at significantly lower processing temperatures by 10 to 20 ° C and thus achieving significant energy savings. The lower melt viscosity and good flow properties allowing to increase production speed at less power per motor mean additional benefits for the economy of production compared to other available PVC materials.

A further suitable use of the invention may be in the production of building profiles, in particular for sealing individual parts of sanitary units and joints between circumferential and internal panels, where complicated, contoured profiles are also required. A wide range of applications is also possible for various types of profiles in the automotive industry.

The essence of the present invention is that the PVC composition for the production of complex thin-walled profiles consists of 38 to 44 wt. % suspension PVC, 24 to 28 wt. % of plasticizers of such a kind that even at their relatively low content, I guarantee! very good frost resistance, 1 to 4.5 wt. pen. a stabilizing system supplying the PVC composition with very good static and dynamic thermal stability during processing, as well as the stability of the product to weathering during its service life, furthermore from 1 to 3 wt. % of the lubrication system, enabling smooth melt sweeping in the die-free die, ensuring a high production rate even at reduced processing temperatures, and finally 20 to 33 wt. % of fillers and pigments235358 articles imparting a melt pseudoelastic to thixotropic character, thereby eliminating the elastic component of the melt, which then perfectly fills the die at lower processing pressures and ensures flawless melt forming to produce a smooth extrusion profile surface. The PVC mixture of the above composition is granulated at temperatures of 100 to 150-O and is molded to a desired profile shape using a die using temperatures of 80 to 160 ° C, at a pressure drop in the die of 10 to 200 MPa and at a production speed to maintain a shear gradient nozzle within the range of 50 to 2000 s ^-1 . The nozzle, as a critical part of the profile production apparatus, is characterized in that it has a ratio of the extrusion profile cross-sectional area to the sum of the guiding plates in pianos of parallel sections (without leading inlet sections) of 1: 10 to 1: 190 and length of shaping elements in planar parallel sections. in the range of 0.5 to 7 cm, which results from the desired production speed and the allowable pressure stress of the extruder.

In view of the specificization of the individual components of the PVC composition, it is advisable to use a suspension-type porous PVC with good plasticizer absorption and low fish-eye content. Its molecular weight, characterized by a K-value, is in the range of 60 to 70, since at K-values below 60 the thermal stability deteriorates significantly and K-values above 70 disproportionately increase the melt viscosity with an increased risk of elastic oscillations. substantial higher temperatures.

Among the known plasticizer pallets, it is suitable to use, in particular, dialkyl esters of phthalic acid, e.g. di-2-ethylhexyl phthalate, dialkyl esters of aliphatic dicarboxylic acids, e.g. di-2-ethylhexyl adipate, dibutyl sebacate, trimellitic acid alkyl derivatives, diglycol dibenzoates, e.g. dipropylene glycol dibenzoate, dibutylene glycol dibenzoate, and for particularly demanding odorless applications, trialkylesters of diethylated citric acid, e.g. acetyltribntylcitrát. If a high frost stopper is placed, it is desirable that the dialkyl esters of aliphatic dicarboxylic acids comprise 30 to 40% of the total softener content.

The stabilization system according to the invention is defined as being composed of 10 to 50 wt. parts of a zinc salt of an aliphatic monocarboxylic acid C6 to C22, e.g.

zirconium dioctoate, zinc stearate, and / or dialkyl tin carboxylate, e.g. % dibutyltin maleate, dibutyltin bis-isopropyl maleate, dibutyltin laurate, 50 to 80 wt. parts of an epoxidized aliphatic compound, e.g. % butylepoxyoleate, epoxidized soybean ester and 0.5-10 wt. parts of a phenolic antioxidant, e.g. 2,6 di-tert-butyl-4-methylphenol, (3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate, or 2,2-bis (4-hydroxyphenyl) propane.

Particularly important is the lubrication system, which according to the invention consists of 40 to 80 wt. parts of total or partial esters of C12 to C22 higher fatty acids with polyhydric alcohols containing 2 to 5 hydroxy groups, e.g. dipropylene glycol distearate, glycerin monostearate, glycerin monooleate, glycerin monoricinoleate, pentaeritritol dioate, sorbitan monolaurate, castor oil, rapeseed oil, 10 to 30 wt. parts of higher C14 to C10 paraffins, such as petrolatum oils of different viscosities, solid paraffins having a melting point of 50 to 90 ° C, and 10 to 30 wt. parts of calcium salts of higher C12-C22 fatty acids, e.g. calcium stearate, calcium oleate, calcium ricinoleate.

With respect to fillers, according to the invention, inorganic fillers with a fine grain size of less than 0.05 mm, such as precipitated calcium carbonate, float chalk, micronized limestone, calcium oxide, kaolin, talc, natural or precipitated barium sulphate. Preferred fillers are coated. However, it is a condition of the invention that at least two-thirds of the total weight of the fillers and pigments is a surface-treated calcium carbonate having a particle size of less than 0.03 mm. The choice of pigments in terms of debt is in no way limited as long as it meets the technological and functional requirements. Typically, up to 5% by weight of the PVC composition is sufficient.

How the PVC melt shear gradient is related to the power of the extruder used and the desired production speed is illustrated in Table 1. It should be understood that each extruder only has a certain range of dialing powers. E.g. an extruder with a 0 32 mm screw has a power range of 1 to 12 kg / h, a machine with a 0 63 mm screw produces 10 to 60 kg / h. and a machine with a 0 90 mm screw displaces 30 to 100 kg / hour.

I

Output of extruder kg / h.

Table 1

Production speed m / min.

Shear gradient with ^_1

0,196 27.62 0,588 82.72 1,176 165.43 2,941 413.86 5,882 827,46 11,765 1,655.18

Table 1 shows the data for the extrusion of a 35 g / m 2 sealing profile using the PVC composition and nozzle shown in Example 3.

The relationship of the pressure drop in the nozzle with the production rate and the length of the nozzle molding elements for a cross-sectional area of 0.70 cm ² using temperature conditions and the PVC composition of Example 3 is illustrated in Table 2:

Table 2

Production speed m / min.

Pressure drop (MPa) in the forming die for the length of the forming elements

0.5 cm 3 cm 5 cm 7 cm

0,196 10.6 64 106 _ 0,588 11.4 68 114 - 1,175 - 72 120 168 2,941 - 76 126 177 5,882 - 79 13 i 184 11,765 - 82 136 190 Setting of temperature processing conditions using nozzle with length shaping e-

As long as they are within the scope of the invention, there is no desire to be sharp, and any experienced PVC processor can set their optimum sequence (temperature profile of the screw) to achieve the greatest possible energy savings. The nozzle temperature is adjusted such that the extruded profile retains its shape when it exits the nozzle and the pressure drop is within prescribed limits.

The advantages and application details of the present invention are illustrated in detail in Examples 1 to 6, examples 1 and 2 being given for comparison, showing prior art in the manufacture of complex thin-walled PVC mock profiles, and Examples 3 to 6 describe possibilities for successful practice of the invention.

Example 3.

A PVC composition having a composition of 56.3 wt. % suspension PVC with a K-value of 70,

33.4 wt. % di-2-ethylhexyl phthalate as a refractor, 1.9 wt. % beta-aminocrotonic acid butyl ester as stabilizer, 0.9 wt. % wax E as lubricant, 4.7 wt. % milled limestone and

1.9 wt. % titanium dioxide. The mixture was granulated at temperatures of 120 to 160 ° C and the obtained granulate was subjected to processing tests of the sealing profile extrusion on a 32 mm single screw extruder at temperatures of 120, 140, 170, 165 ° C at extrusion rates of 0.2 to 2.0. m / min, lements 0.3 cm and then also with the nozzle of Example 3, with the length of the molding elements

2.5 cm. During the tests, none of the cases was able to prepare a satisfactory appearance profile. The surface of the profile was harmoniously wavy in the thinnest parts, with a wine frequency of 0.3 to 1.2 cm depending on the production speed. At higher dialing speeds (above 0.5 m / minj) there was also a roughening of the surface, with apparent poorly processed PVC particles. Even experiments with decreasing and increasing the processing temperatures did not improve the appearance. Hardness was measured when determining the mechanical properties of this PVC composition. 75 ° Shore A, a tensile strength of 12.2 MPa, an elongation of 146% and a frost resistance of -29 ° C. The PVC composition of this example was classified as unsatisfactory for the production of refrigerator sealing profiles.

Example 2

In a fluidized bed mixer, a PVC composition is prepared comprising: 125 kg of suspension PVC having a K-value of 70, 112.5 kg of micronized limestone, 3 kg of acrylic process modifier, 3.8 kg of wax E, 9.5 kg of titanium dioxide; 26 kg of calcium stearate, 2.11 kg of tin maleate dibuty, 99.5 kg of a polybutylene glycol adipate based plasticizer, 15 kg of di-2-ethylhexyl phthalate, and 7.5 kg of soybean oil epoxybutyl ester. Even when mixing the mixture, difficulties arise due to the high viscosity of the polymeric plasticizer and its too slow absorption of the PVC grain. The blended mixture is lumpy with a large proportion of agglomerates of 1 to 10 cm in size. After sintering agglomerates over 3 cm (representing 5 to 15% by weight of the blended mixture), the mixture is granulated at temperatures of 120 to 150 ° C, and the granulation rise must be careful and slow to avoid overheating of the melt by frictional heat. as a result of gluing the granules downstream of the chopping knife, clogging both the discharge line and the cooler with the granules and thus a) further increase the waste. The granulate thus produced is processed on a single-screw extruder of 0 63 mm at a temperature of 120, 135, 140, 145, 150, 140 ° C to a refrigerator spill. By using a nozzle with a length of 0.3 cm and a production speed of 2 m / min., The desired appearance was not achieved, and only by reducing the speed to 0.8 m / min. Using the nozzle of Example 3, having a molding element length of 2.5 centimeters, it was possible to produce an almost smooth profile with a fine semitritic surface area. A production speed of 4 m / min at 25 rpm was measured. The indicated production speed is only 20.4 kg / h, with an energy consumption of up to 1.284 kWh'kg profile. In determining the mechanical properties, a hardness of 73 ° shore A, a tensile strength of 6.5 MPa and a frost resistance of only -23 ° C were measured. Melt flow index at 190 ° C a. the 3 kg load was 5.7 g / 10 min. The PVC composition of this example has been classified as very cost-intensive, less suitable for processors to manufacture refrigerator profiles and unsuitable for freezer profiles.

Example 1 and d 3

A PVC composition according to the invention is prepared on an operational fuid mixer consisting of 150.0 kg (ie 41.2% w / w) of suspension PVC with a K-value of 62.92 kg (ie 25.5% by weight). a mixture of softeners consisting of 69.2 kg of di-2-ethylhexyl phthalate and 23.6 kg of di-2-ethylhexyl adipate, 9.1 kg (ie 2.5% by weight) of a stabilizing system composed of 1.09 kg of zinc dioctoate, 7 , 28 kg of epoxidized soybean oil butyl ester and 0.73 kg of 2,6-di-tert-butyl-4-methylphenol antioxidant, 6.55 kg (ie 1.8 wt. Pere) of a lubrication system composed of 3.63 kg of pentaeritryl dioleate, 0 , 73 kg of castor oil, 0.73 kg of medical petrolatum oil, 0.73 kg of solid paraffin with a melting point of 53 ° C and 0.73 kg of calcium stearate, 91.0 kg (ie 25.0% by weight) of the coated chalk with a particle size below 0.03 mm as filler and 14.6 kg (i.e.

4.0 wt. %) of titanium white and 0.7 g of PVblue A as pigments. The blended PVC composition is granulated on a 120 mm twin screw granulator at temperatures of 110, 125, 135, 140, 140, 130, 130 ° C, engine speed of 1300 rpm, engine power of 15.5 kW, with a power of 405 kg of granulate per hour. From this granulate a refrigerator seal profile is produced on a 0 63 mm single screw extruder at temperatures of 120, 135, 140, 125, 115 ° C, using a die with a length of 2.5 cm of guiding molding elements, with a cross-sectional area of 0.68 cm ^2. and by the ratio of the cross-sectional area of the profile to the sum of the areas of the guiding pan-parallel portions of the molding elements 1: 72.5. At 20 turns per minute, the production speed is 7 m / min, which corresponds to a machine output of 35.7 kg / h. The amperic load is only 17 A, and the energy consumption is only 0.542 kWh / kg profile. The pressure drop in the nozzle is 65 MPa and the shear gradient is 985 s ^-1 . The surface of the profile produced is completely smooth, free of defects, with all the required dimensions, yet the production performance is up to 78% higher than that of the composition of Comparative Example 2. The hardness of 71 ° Corps A, tensile strength 8, 4 MPa, elongation 134% and frost resistance up to –42 ° C. the melt flow index was

87.3 g / 10 min. at a temperature of 190 ° C and a load of 3 kg, which is 15 times more than in Example 2. Based on the stated processing and utility properties, the PVC composition shown in Example 3 can be classified as suitable for the production of sealing profiles for both refrigerators and freezers .

Example 4

A PVC composition of the composition of Example 3 is prepared, but its granulation is carried out at temperatures of 100, 120, 145, 150, 140, 130, 130 ° C, at an engine speed of 1500 rpm. per minute, with an engine power of 17.0 kW, with an output of 435 kg of granulate per hour. The freezer seal profile is produced from this granulate:

a) on an extruded single screw machine 0 32 mm at temperatures of 110, 125, 130, 115 degrees Celsius using a nozzle with a length of shaping elements of 0.5 cm, with a ratio of the cross-sectional area of the profile to a sum of shaping elements of 1: 13. 60 rpm a production rate of 0.1 m / min is achieved, corresponding to an extrusion capacity of 3.6 kg / h, at a nozzle pressure of 11.7 MPa and a shear gradient of 93 s ^-1 . The surface of the profile is smooth without any visual defects.

bj on a single screw extruder 0 90 mm at temperatures of 80, 105, 125, 135, 160, 145, 140, 130 ° C using a nozzle with a length of 7 cm, with a cross-sectional area to profile sum of 1: : 181. At screw speed 25 rpm. a production speed of 14.2 m / mln is achieved, which represents an output of 72 kg / h. profile at a pressure drop in the nozzle of 198 MPa and a shear gradient of 1 998 s ^-1 . Made profile is smooth and without appearance errors.

Example 5

A PVC blend consisting of 44 wt. % suspension PVC with a K-value of 60, 28 wt. % dipropylene glycol dibenzoate as a plasticizer, 1.5 wt. % dibutyltin maleate, 2.7 wt. % epoxylated oleic acid ester, 0.3 wt. %

2,6-di-tert-butyl-4-methylphenol as a stabilizing system, 1.5 wt. % sorbitan monolaurate, 0.7 wt. % petroleum oil, 0.8 wt. 14.5 wt. % surface-treated micronized limestone with an average particle size of 0.007 mm, 4.5 wt. pen. annealed kaolin and 1.5 wt. % titanium dioxide as fillers and pigments. The mixture is granulated at 115, 135, 145, 150, 140, 135 ° C and then molded on an extruder of 0 63 mm at temperatures of 120, 128, 135, 140, 135, 135 ° C using a die with a length of molding. 1.5 centimeters. Cross section of the profile is 2.04 cm ² and the sum of the surfaces of the mold elements is 22.2 cm ^2, the pressure drop in the nozzle is 40.4 MPa and the shear gradient is the 65.52 ^_1. Under these conditions, an extrusion rate of 1.96 m / min is achieved, which represents an output of 31.9 kg of profile per hour. The appearance and dimensions of the profile meet the quality requirements.

Example 6

For the production of profiles for car body seals, a PVC composition of 39 wt. % suspension PVC with a K-value of 70.9 wt. % di-2-ethylhexyl adipate, 8 wt. % di-nonylphthalate, 6 wt. pen. % di-butylene glycol dibenzoate, 0.4 wt. pen. dibutyltin-bls-monoisopropyl maleate, 0.5 wt. 0.1 wt.% epoxy-butyl soybean oil ester, 0.1 wt. % 2,2-bis (4-hydroxyphenyl) -propane, 0.3 wt. % pentaerythritol dioleate, 0.2 wt. % castor oil, 0.1 wt. % Vaseline Oil, 0.15 wt. % solid paraffin with a melting point of 84 ° C, 0.25 wt. % Of calcium stearate, 25.0 wt. % surface treated float chalk with an average particle size of 0.0028 mm, 5.0 wt. % micronised barium sulfate, 2.9 wt. % titanium dioxide and 0.1 wt. % of soot. The mixture is granulated at 105, 125, 145, 145, 135, 125 ^C and then molded on an extruder of 0 63 mm at 110, 130, 150, 145, 130, 120 ° C using a die with a length of molding elements. 2 cm, with a cross-sectional area of 1.60 cm ² and a sum of 19.6 cm ² . The pressure drop across the die was 16.9 MPa and a shear gradient of 55.78 ^_1. Under these conditions, an extrusion rate of 1.78 m / min is achieved, which represents a power of 24.9 kg per hour. The profile produced has a smooth and glossy surface with no visual defects.

The examples given do not exhaust all possibilities of using the invention nor limit the scope of its application. They have merely shown in a comparative manner: the advantage of making the lined and rugged PVC mocked profiles according to the invention and at the same time serve the users of the invention as a good guide for the creative development of the principles of the invention in other practical applications.

Claims (7)

255358 11 12, the length of the forming elements is 7 cm, with the cross-sectional area of the profile to the components of the forming elements equal to 1: 181. At a screw speed of 25 rpm. the production plant reaches a speed of 14.2 m / min, representing 72 kg / h. profile, and top pressure drop in the nozzle of 198 MPa and a shear gradient of 1,998 sec -1. The profile produced is smooth and free from error. Example 5 A PVC mixture consisting of 44 wt. % suspension PVC of K-value 60, 28 wt. % of dipropylene glycol di-benzoate as a wetting agent, 1.5 wt. % di-butyltin maleate, 2.7 wt. % of an epoxidized oleic ester, 0.3 wt. % 2,6-di-tert-butyl-4-methylphenol as a stabilizing system, 1.5 wt. % of sorbitan aminolaurate, 0.7 wt. % vaseline oil, 0.8 wt. % of calcium stearate as a coating system, 14.5 wt. % of the surface treated micronised limestone with an average particle size of 0.007 mm, 4.5 wt. calcined kaolin and 1.5 wt. % of the thylene white as fillers and pigments. The mixture is granulated at temperatures of 115, 135, 145, 150, 140, 135 ° C and then molded with a die of 63 mm at temperatures of 120, 128, 135, 140, 135, 135 ° C at using a spigot of 1.5 centimeters. The cross-sectional area of the profile is 2.04cm2 and the sum of the shaping element surfaces is 22.2cm2, the pressure drop in the nozzle is 40.4 MPa and the shear gradient is 65.52s_1. Under these conditions, an extrusion rate of 1.96 m / min is achieved, which amounts to 31.9 kg profile per hour. The profile dimensions and dimensions meet the qualitative requirements. EXAMPLE 6 A PVC composition is prepared to produce profiles for car bodywork seals. % of the suspension PVC with a K value of 70.9 wt. % di-2-ethylhexyl adipate, 8 wt. % nonionyl phthalate, 6 wt. di-butylene glycol dibenzoate, 0.4 wt. dibutyltin-bis-monoisopropylmaleinate, 0.5 wt. % epoxidized butyl ester oil, 0.1 wt. % 2,2-bis (4-hydroxyphenyl) propane, 0.3 wt. % pentaerythritol dioleate, 0.2 wt. % castor oil, 0.1 wt. % Medical Vaseline Oil, 0.15 wt. % solid paraffin melting point 84 ° C, 0.25 wt. Calcium stearate, 25.0 wt. % of the surface treated float chalk with an average particle size of 0.0028 mm, 5.0 wt. % micronised barium sulfate, 2.9 wt. % titanium white and 0.1 wt. % channelfeeds. The mixture is granulated at temperatures of 105, 125, 145, 145, 135, 125 CC and is then molded on an extruder 0 63 mm at temperatures of 110, 130, 150, 145, 130, 120 ° C using a nozzle with the length of the forming elements 2 cm, with the cross-sectional area of the profile 1.60 cm 2 and the sum of the surfaces of the shaping elements 19.6 cm 2. The pressure drop in the nozzle is 16.9 MPa and the gradient 55.78 s_1. Under these conditions, an extrusion rate of 1.78 m / min is achieved, representing an output of 24.9 kg / hr. The profile produced has a smooth, lustrous surface without any flaws. The examples are not intended to limit the scope of the invention or limit its scope. They have shown, in a comparative manner, the advantage of forming from the resilient and rugged PVC-softened profiles by the process of the present invention, and at the same time serving the inventors as a good orientation for the creative development of the principles of the invention in other practical applications. applications. OBJECT 1. A process for the production of complex thin-walled PVC profiles, characterized by the fact that the PVC blend of 38 to 44 wt. % suspension PVC, 24 to 28 wt. % of surfactants, 1 to 4.5 wt. % stabilization system, 1 to 3 wt. % lubricating system, 20 to 33 wt. % of the fillers and the pigment are granulated at temperatures of 100 to 150 ° C and are profiled to a profile at a temperature of 80 to 160 ° C with a pressure drop in the nozzle of 10 to 200 MPa and a shear gradient in the nozzle of 50 to 2,000 s -1. 2. A process for producing complex thin-walled PVC profiles according to claim 1, wherein a PVC mixture of 41.2 wt. % suspension PVC with a K-value of 62, 25.5 wt. % of plasticizers, 2.5 wt. % stabilization system, 1.8 wt. % lubrication system and YOU! E 7. in 29 wt. % of fillers and pigments, which are granulated at 110-140 ° C and formed into profiles using temperatures of 115-140 nC, at a pressure drop in the nozzle of 65 MPa and a shear gradient of 985 s -1. 3. A process for producing complex thin-walled PVC profiles according to claim 1, wherein the stabilizing system consists of 10 to 50 wt. parts of zinc aliphatic monocarboxylic acid Ca to C22 and / or dialkyl tin carboxylate, 50 to 80 wt. parts of epoxylated aliphatic compound and 0.5 to 10 wt. parts of a phenolic antioxidant. 4. A process for producing complex thin-walled PVC profile films according to claim 1, wherein the lubricating system comprises 40 to 80 wt. parts of total or 255358 13 14 higher fatty acid esters of G12 to C22 with polyhydric alcohols having from 2 to 5 hydroxyl groups, 10 to 30 wt. parts of higher paraffins C14 to C10 and 10 to 30 wt. parts of calcium salts of higher fatty acids C12 to C22. 5. A method for producing complex thin-walled PVC profile sheets according to claim 1, wherein at least two thirds of the total weight of fillers and pigment form a surface-treated carbonate with a particle size of less than 0.03 mm. 6. Apparatus for producing a method for producing complex thin-walled PVC-crimped profile parts according to claim 1, characterized in that the extrusion die has a profile cross-sectional area to the sum of the guide plan-parallel surfaces of the molding elements ranging from 1: 10 to 1: 190, wherein the length of the forming elements is 0.5 to 7 cm. 7. Apparatus for producing a method for producing complex thin-walled PVC-coated profiles according to claim 1, wherein the cutting-out nozzle preferably has a cross-sectional area of the profile to the sum of 1: 40. up to 1: 80, the length of the forming elements being preferably 1.5 to 3 cm.