WO2012033469A1

WO2012033469A1 - System having corrugated roller and linear motion unit for obtaining nanofibre or nanoparticle via electrostatic spinning

Info

Publication number: WO2012033469A1
Application number: PCT/TR2011/000188
Authority: WO
Inventors: Erman Ekler
Original assignee: Atalar, Omer Yalcin
Priority date: 2010-09-06
Filing date: 2011-08-22
Publication date: 2012-03-15
Also published as: TR201007415A2

Abstract

The invention relates to a system with a linear motion unit, which uses at least one main polymer mixed with cross bonding agent, which has static mixer, distributor and electrostatic head using corrugated roller in accordance to this, and on which the head can go back and forth on a line in order to provide production of nanofibres or nanoparticles via electrostatic spinning and porous or nonporous surface coating with these.

Description

DESCRIPTION

SYSTEM HAVING CORRUGATED ROLLER AND LINEAR MOTION UNIT FOR OBTAINING NANOFIBRE OR NANOPARTICLE VIA ELECTROSTATIC SPINNING

The Related Art

The invention relates to the system providing production of nanofibres or nanoparticles via electrostatic spinning, and porous or nonporous surface coating with these.

The invention particularly relates to a system, which uses at least one main polymer mixed with cross bonding agent, and which comprises static mixer, distributor and electrostatic head having roller suitable with this. The system also comprises a linear motion unit, wherein the head can go back and forth on a line.

The Prior Art

Method of producing fibre from polymer via using electrostatic force is disclosed in the patent with publication no US1975504 published in 1934. According to this, polymer material is conveyed to the electric field formed between two electrodes by using high voltage and the material flows from one electrode to the other in a very thin manner and as a result of this, fibres are formed and gathered.

Electrospinning mechanisms are mechanisms frequently used in laboratories. Basically, these mechanisms are formed of high voltage unit, polymer chamber, and needle-like thin channel pipes ensuring flow of polymers. However, these are quite difficult systems to be formed in industrial level. Because needle like pipes can be clogged, adjustment of the coulombic forces between needles becomes very expensive, and homogeneous nanofibre distribution can not be obtained.

Instead of the needle-like embodiments of the prior art, roller systems such as the one disclosed in the patent with publication no WO 2009/049566 can also be used. However, the lateral surfaces of the rollers are plain in these systems and thus they may cause local electrical discharge problem, called corona discharge. At the same time, homogeneous chemical distribution can not be obtained oh the roller surface.

Another problem of the same system is not having a closed polymer chamber system and the polymer flow being from downward to upwards. In this case, the vapour of the solvent used can not be removed away from the application surface or it is removed very difficulty. Therefore, external structures of nanofibres change, where they are subject to vapour, and integrity of the final product can not be obtained due to changing of the nanofibre diameter etc. reasons. In addition to the above said problems, cross bonding agent can not be used in said systems. Because, the polymer chamber of the system is in open state. Binder agent can not be fed to the roller. Homogeneous mixture can not be obtained even when the polymer and agent are tried to be mixed in an open system. Therefore, providing complete adherence on the application surface (especially for PVA and suchlike materials) becomes a quite difficult operation.

In the prior art coating systems, the width of the coated surface is generally limited to at most 160 cm. This obstructs making production with any dimension.

Most of the systems found in the prior art use water based chemicals. Wired mechanisms are used in the solvent based systems. The document with publication no WO 2008/028428 can be given as an example to these types of systems. According to this, wires are tightened in certain intervals on two disc form parallel plates, which are positioned on a shaft. The mechanism is rotated on said shaft axis, which is immersed into the chemical chamber. However, said problems continue since the system as open chamber and the flow is from downwards to upwards. Also, another problem is drying of the polymer solution found on the wires. Therefore, the process comes to a stopping point.

Vaporization occurs in said prior art systems because of using highly volatile solvents or compositions. Continuous operation of the process is not possible due to vaporization.

As a result of all of these problems, need has occurred for a system, which can form a chemical having a homogeneous polymer-binder agent mixture, and which can homogeneously obtain nanofibre and nanoparticles or make coating.

Brief Description of the Invention

The invention is formed by being inspired from the prior art and aims to solve the above said problems.

Primary purpose of the invention is to provide a system, which ensures obtaining nanofibre or nanoparticle via electrostatic spinning method or provides surface coating with these. Another purpose of the invention is to provide storing, mixing, and distribution of main polymer chemical and binder agent in a closed system and thus prevent composition ratio changes formed due vaporization.

The purpose of the invention is to form a system, which can both operate with water based and solvent based chemicals via the closed system and corrugated roller. It is another purpose of the invention to form a continuously operating system especially via the closed circuit mechanism, which does not allow vaporization.

Another purpose of the invention is to obtain a vertically and horizontally straight fiber orientation and homogeneity via the corrugated roller and roller scraper mechanism. A purpose of the invention is to provide removal of the air to be formed in the system and transmission of the chemical to the electrostatic head without surge pressure via the distributor having dual distributor.

Another purpose of the invention is to provide coating of surfaces with the desired industrial width via the linear motion unit obtained with the desired length.

Another purpose of the invention is to orient electrostatic field and polymer flow and provide a uniform fibre flow by closing the three sides of the corrugated roller.

Another purpose of the invention is to provide formation of much smaller variation coefficient than the prior art for nanofibres and nanoparticles by continuously maintaining the electric field straight and the fed polymer solution constant.

The structural and characteristic features of the invention and all advantages will be understood better in detailed descriptions with the figures given below and with reference to the figures, and therefore, the assessment should be made taking into account said figures and detailed explanations.

Figures for Better Understanding of the Invention

Figure-1 , shows the perspective view of the system, which is the subject of the invention.

Figure-2, shows the perspective view of the chemical supply unit.

Figure-3, shows the exploded perspective view of the chemical supply unit.

Figure-4, shows the exploded perspective view of the distributor.

Figure-5, shows the perspective view of the electrostatic head unit and linear motion unit.

Figure-6, shows the exploded perspective view of the electrostatic head unit.

Figure-7, shows the perspective view of the electrostatic head.

Figure-8, shows the exploded perspective view of the electrostatic head.

Figure-9, shows the exploded perspective view of the distribution and sealing panel.

Figure-10, shows the representative coating operation made with the system, which is the subject of the invention.

Drawings do not have to be scaled and details not necessary for understanding the present invention may be neglected. Moreover, components which are at least widely equal or which have at least widely equal functions are shown with the same number. Description of Parts References

100. Main polymer chemical supply unit 220. Distribution and sealing panel

101. Chemical pipe 221. Main body

110. Main polymer chemical tank 222. Piston channel

111. Main polymer pump 223. Panel piston

112. Servo motor 224. Support component

113. Coupling 225. Pipe connection component

114. Pressure balancing valve 226. Terminal sealing component

120. Cross bonding agent tank 227. Chemical scraper

121. Cross bonding agent pump 228. Scraper mounting apparatus

122. Servo motor 229. Piston fixing piece

123. Coupling 240. Horizontal sealing component

124. Pressure balancing valve 250. Head drive component

130. Static mixer 251. Fixing component

140. Distributor 260. Linear motion gear

141. Cover 261. Carrier shaft

142. Chemical inlet 262. Drive mechanism

143. First distributor 263. Fixing piece

144. Second distributor 264. Carrier shaft bearing

145. Distributor channel 270. Panel linear bearing

146. Sealing component 280. Roller bearing

147. Pipe connection component 281. Bearing

148. Connection component channel

149. Sealing component housing 300. Linear motion unit

310. Linear carrier profile

200. Electrostatic head unit 320. Control rack

201. Chassis 330. Support profile

210. Electrostatic head

211. Corrugated distribution roller 400. Collector

212. Drive transmission component 410. Body

213. Transmission component connecting piece 420. Collector surface

214. Mechanical seal 430. High voltage unit

215. High voltage unit

500. Coating surface opening roll

550. Coating surface wrapping roll Detailed Description of the Invention

In this detailed description, the preferred embodiments of the system, which is the subject of the invention, will only be disclosed for better understanding of the subject, and will not form any limiting effect.

The invention relates to the system providing production of nanofibres or nanoparticles via electrostatic spinning and porous or nonporous surface coating with these (Figure-1).

The invention is basically formed of at least one main polymer chemical supply unit (100), at least one electrostatic head unit (200), to which the chemical supplied from the supply unit (100) via pipes (101) is transmitted and which provides obtaining product or making coating from the chemical, at least one linear motion unit (300) providing linear motion of said head unit (200), and at least one collector (400), on which the product is collected by being positioned across said linear motion unit (300) and the electrostatic head unit (200) or coating operation is made with the product.

The chemical supply unit (100) comprises at least one main polymer chemical tank (110) and at least one pump (111) which provides taking of chemical from this tank (110), at least one cross bonding agent tank (120) and at least one pump (121) which provides taking of agent from this tank (120), at least one static mixer (130) providing mixing of materials coming from the main polymer chemical tank (110) and cross bonding agent tank (120), and at least one distributor (140) distributing the mixture coming from the mixer (130) to at least two branches in equal amounts and pressure (Figure-2 and 3). In the preferred system, one each tank (110, 120) and one pump (111 , 12 ) is found for each tank. Said tanks (110, 120) are made of PTFE (Polyetrafluoroethylene) material and coated with polyimide for preventing corona discharge, which is a partial (local) type of electrical discharge. Moreover, pneumatic actuator pressure balancing valves (114, 124) are found on the tanks (110, 120) with the purpose of avoiding formation of negative pressure when material is taken from inside and thus maintain the inner pressure of the tank and the flow rate of the pump (111 , 121 ) constant. In this way, inside pressure is continuously kept constant by addition of air or inert gas.

Said pumps (111 , 121 ) are micro geared pumps (111 , 121) preferably rotated with the help of servo motor (112, 122). The connection between the servo motor (112, 122) and the pump (111, 121) is made via coupling (113, 123). Couplings (113, 123) are obtained from Delrin® or kestamid. Electronic accessories of the pumps are positioned within vacuum tubes in order to avoid losses in high voltage. Moreover, pumps (111 , 121) are also made of PTFE material due to the same reason. Chemicals carried from tanks (110, 120) and pumps (111, 121) via pipes (101 ) are mixed homogeneously in the static mixer (130) in desired ratios. Said pipes (101 ) are obtained as double walled. The inner and outer perimeter of the pipe is made of PTFE material and the inner wall is coated with polyimide film in order to prevent loss of electricity.

In order to achieve appropriate mixture homogeneity inside the static mixer (130), the chemical cross bonding agent is diluted with a solvent in accordance with the composition of the main polymer chemical. For example, if PVA nanofibre production would be made, glutaraldehyde cross bonding agent would be mixed with water in 1 :2 to 1 :10 ratio, then stored in the bonding agent tank (120) in this way, and then given to the static mixer (130). The ratio of the amount of polymer material in the polymer solution to the active cross bonding agent varies between 3:1 to 40:1.

The chemical, dosing amount of which is adjusted with the revolution speed of servo motors (130), has a heterogeneous structure when it reaches the static mixer (130) (polyether ether ketone (PEEK) or PTFE), but a homogeneous mixture is formed at the exit of the static mixer. Usage or design of the static mixer depends on the chemicals used. In general non- clog type static mixer (130) is preferred. The length of the static mixer (130) varies according to the polymer solution density and the cross bonding agent applied. In some cases, more than two static mixers (130) are required to be used when a third reactive component has to be applied in nanofibre or nanoparticle production. In a preferred embodiment of the invention, said distributor (140) comprising at least one cover (141) with at least one chemical inlet (142) comprises at least one first distributor (143), which distributes the chemical entering from a single point into three equal branches in equal pressure and amounts and at least one second distributor (144), which provides separation of the chemical coming from the three points of the first distributor into three more branches for each, that is to say, into nine branches in total in equal pressure and amounts (Figure-4). Said number of branches can be increased or decreased arbitrarily. However, necessary pressure and mass calculations have to be made carefully.

The invention comprises distributor channels (145), which are formed on the surface of the Disc-form distributors (143, 144) where the chemical comes to, and which become deeper starting from the combination point of the branches found in threes towards the ends with about 5° angle according to said surface. 120° angle is found between said channels (145) found in threes (Figure-4). In addition to these one each sealing component (146) is found between the cover (141), first distributor (143), and second distributor (144). Sealing component housing (149) can be formed on the surfaces of the cover (141) and distributors (143, 144) contacting with the sealing component (146). Said sealing component (146) is o- ring made of Kapton®, karles, Viton®, PTFE or EPDM (Ethylene Propylene Diene Monomer). Moreover said components (141, 143, 144) are coated with polyimide film.

At least one each pipe connection components (147) are connected to the inlets and/or outlets of the distributor (140). Since there are nine outlets in the preferred embodiment as mentioned above, also nine outlet pipe connection components (147) are found. These components (147) are preferably pipe coupling.

Distributor (140) finally comprises at least one each connection component channel (148) formed on the cover (141), the first distributor (143), and the second distributor (144) and providing fixation between these components. Preferred embodiment has six channels (148). However, the number may change according to demand. The distributor connection components passing through these channels (148) and cover (141), first distributor (143), second distributor (144), and pipe connection components (147) are made of PTFE material. The chemical incoming by being separated in the distributor (140) found in the chemical supply unit (100) is transferred to the electrostatic head unit (200) as stated above. Electrostatic head unit (200) comprises:

• at least one chassis (201) bearing at least one electrostatic head (210) and the required components,

· at least one drive component (250), which drives/actuates the electrostatic head (210),

• at least one linear motion gear (260) providing movement of the head unit (200) on the linear motion unit (300),

• at least one carrier shaft (261), to which said gear (260) is connected, and which carries the head unit chassis (201 ), and

· at least one drive mechanism (262), which is fixed on the chassis (201) via a fixing piece (263), which is connected to the carrier shaft (261), and which thus moves the head unit (200) by driving the shaft (261) and the gear (260) (Figure-6).

Said electrostatic head (210) comprises:

· at least one corrugated distribution roller (211 ),

• at least one roller high voltage unit (215) connected to the shaft passing through the centre of the roller, • at least one distribution and sealing panel (220) providing distribution of the chemical on the roller (211) and closing at least one side of the roller (211) and leaving the part from where the product would be obtained, and

• at least one horizontal sealing component (240) providing sealing by being positioned between the panel (220) and the roller (211 ) (Figure-7).

Said roller (211) is preferably used between 1 to 150 revolutions per minute (RPM). While 1- 60 revolution/minute is preferred in nanofibre production; 100-150 revolution/minute is preferred in nanoparticle production. Roller (211) can carry 0.5-60 ml of chemical in each cycle via its micro pores (Figure-8). This amount may change according to the chemical used. In order to obtain said amount, the roller (211) is changed with the suitable corrugated roller (211).

Electrostatic head (210) is connected on the chassis (201) in more than one way. Main connection is made by placement of at least one support component (224), which is in the form of a shaft formed on the surface of the distribution and sealing panel main body (221 ) not facing the roller (211) and preferably used in three units, inside at least one linear bearing (270) fixed on the chassis (201). The preferred amount here is two support components (224) per panel (220) and two corresponding linear bearings (270) for each. A piston channel (222) preferably formed at a central point is found at the same surface of the panel (220). One each piston (223), fixed on the chassis (201) via a fixing piece (229), is connected to this channel (222). In this way, said panels (220) are brought close to the roller (211) or taken away from the roller when required. During this motion, although single piston (223) is used, the motion is made linearly thanks to said support components (224) and linear bearings (270).

However, said connection only provides connection of the distribution and sealing panel (220). For connection of the rollers (211) found in the head (210), preferably two roller bearings (280) are fixed on the chassis (201) and the roller (211) is positioned between these two corresponding bearings (280) (Figure-6).

The drive component (250) is preferably found as one unit in the electrostatic head unit (200). In order to provide rotation of the roller (211) via the component (250), one each balancing wheel or gear is fixed as the connecting piece (213) to the motor shaft and roller shaft ends, and these two components are connected to preferably one drive transmission component (212). Here, said component (212) is preferably a plastic belt. Chemical brought to the electrostatic head (210) via pipes (101 ) is transferred on the roller (211) via at least one pipe connection component (225) (preferably three units for meeting said nine lines) formed at the outer surface of each of the distribution and sealing panels (220). Preferably pipe coupling is used as said connection component (225). In order to prevent leakage of the chemical between the panel (220) and the roller (211 ), the invention comprises:

• at least two sealing components (226), which ensure sealing by being fixed at two ends of the panel main body (221),

• one each scrapers (227), which scrape the chemical found on the roller by being fixed on two edges of the panel that are close to the roller, and

• mounting apparatus (228), which provide fixation of the scraper (227) on the panel main body (221) (Figure-9).

In order to provide sealing, one mechanical seal (214) is also found at both of the two ends of the roller.

When the chemical applied on the roller (211) is cleaned with the scraper (227), only the chemicals found on the cavities (corrugations) are left back. And these flow down from the quartile part of the roller (211) that is left open. The roller (211) and its central shaft as the only conductors found in the electrostatic head (210) are loaded with positive voltage via the high voltage unit (215) connected to the shaft. The collector (400) comprising an adjustable height body (410) and at least one collector surface (420) positioned on this body (410) has said surface (420) as the only conductive component and it is loaded with negative voltage again via a high voltage unit (430). In this way, the chemical flowing to the collector surface (420) takes the form of nanofibre via electrostatic spinning method. Said roller (211), roller shaft, and collector surface (420) can be made of metal or another known conductive material. The distance between the electrostatic head (210) and the collector surface (420) may change between 10 to 60 cm according to the final product desired and/or the chemical used.

The head unit (200) beginning to produce nanofibre or nanoparticle can go back and forth on a linear motion unit (300) preferably having the length of the collector surface (420). In order to obtain this, the head unit (200) comprises said linear motion gear (260), carrier shaft (261), and drive mechanism (262). The system is preferably formed of two parallel carrier shafts (261 ), four bearings (264) providing bearing to these, total of four gears (260) fixed at the two ends of the shafts (261), and a motor driving one of the shafts (261). Linear motion unit (300) comprises:

• at least one, preferably two reciprocal linear carrier profiles (310) carrying the electrostatic head unit (200), and

• at least one each control rack (320), on which said linear motion gear (260) moves, being fixed on the profile (310), and

• at least one each support profile (330) supporting the control rack (320) (Figure-5).

Gear (260), control rack (320), and bearing components of these used with the purpose of linear motion are completely made of plastic in order to prevent electric leakage.

The high voltage unit (215) used in the invention and connected to the roller (211) can produce a voltage value in the range of 30 to 120 kV and can operate with a current value between 0-3.5 A. The unit (430) connected to the collector surface (420) can produce a voltage value between 10 to 60 kV and can operate with a current value between 1500 to 2500 mA.

When said coating operation is wanted to be made with the invention, the surface to be coated is loosened (500) at one side of the collector (400) and wrapped (550) at the other side of the collector (400). After coating of the surface passing over the collector surface (420), the coated surface is wrapped and then new surface coming to the collector surface (420) is coated (Figure-10).

Claims

1. The invention is a system and it is characterized in that; it comprises at least one main polymer chemical supply unit (100), at least one electrostatic head unit (200), to which the chemical supplied from the supply unit (100) via pipes (101 ) is transmitted and which provides obtaining product or making coating from the chemical, at least one linear motion unit (300) providing linear motion of said head unit (200), and at least one collector (400), on which the product is collected by being positioned across said linear motion unit (300) and the electrostatic head unit (200) or coating operation is made with the product, and it provides production of nanofibres or nanoparticles via electrostatic spinning and porous or nonporous surface coating with these.

2. System according to Claim 1 and it is characterized in that; said chemical supply unit

(100) comprising at least one main polymer chemical tank (1 10) and at least one pump (111 ), which provides taking of chemical from the tank (110), also comprises at least one cross bonding agent tank (120) and at least one pump (121 ) that provides taking of agent from the tank (120).

3. System according to Claim 2 and it is characterized in that; said tanks (110, 120) are made of PTFE material and coated with polyimide film.

4. System according to Claim 2 and it is characterized in that; said tanks (110, 120) comprise pressure balancing valve (114, 124) with pneumatic actuator for the purpose of avoiding formation of negative pressure when material is taken from inside and thus maintain the inner pressure of the tank and the flow rate of the pump (111 , 121) constant.

5. System according to Claim 1 and it is characterized in that; said pipes (101 ) are double walled and these walls are made of PTFE material.

6. System according to Claim 1 and it is characterized in that; the inner walls of said pipes

(101 ) are coated with polyimide film.

7. System according to Claim 1 and it is characterized in that; said chemical supply unit (100) also comprises at least one static mixer (130) which provides mixing of the materials coming from the main polymer chemical tank (110) and cross bonding agent tank (120).

8. System according to Claim 7 and it is characterized in that; said mixer (130) is made of polyether ether ketone (PEEK) or PTFE material.

9. System according to Claim 7 and it is characterized in that; said chemical supply unit (100) also comprises at least one distributor (140) distributing the mixture coming from the mixer (130) into at least two branches in equal amounts and pressure.

10. System according to Claim 9 and it is characterized in that; said distributor (140) comprising at least one cover (141 ) with at least one chemical inlet (142) comprises at least one first distributor (143), which distributes the chemical entering from a single point into three equal branches in equal pressure and amounts.

11. System according to Claim 9, and it is characterized in that; said distributor (140) comprises at least one second distributor (144), which provides separation of the chemical coming from the three points of the first distributor into three more branches for each, that is to say, into nine branches in total in equal pressure and amounts.

12. System according to Claims 10 or 11, and it is characterized in that; it comprises distributor channels (145), which are formed on the surface of the disc-form distributors (143, 144) where the chemical comes to, and which become deeper starting from the combination point of the branches found in threes towards the ends with about 5° angle according to said surface.

13. System according to Claim 12 and it is characterized in that; 120° angle is found between said channels (145) found in threes.

14. System according to Claim 11 , and it is characterized in that; said distributor (140) comprises one each sealing component (146) between the cover (141), first distributor (143), and second distributor (144).

15. System according to Claim 9, and it is characterized in that; it comprises at least one each pipe connection component (147) positioned at chemical inlets and/or outlets of said distributor (140).

16. System according to Claim 11 , and it is characterized in that; said distributor (140) comprises at least one each connection component channel (148) formed on the cover (141 ), the first distributor (143) and the second distributor (144) and providing fixation between these components.

17. System according to Claim 14, and it is characterized in that; said sealing component (146) is Kapton®, karles, Viton®, PTFE, or EPDM (Ethylene Propylene Diene Monomer).

18. System according to Claim 11 and it is characterized in that; the first distributor (143) and the second distributor (144) parts of said distributor (140) are coated with polyimide film.

19. System according to Claim 15 and it is characterized in that; the first distributor (143), the second distributor (144), the pipe connection component (147), and the distributor connection component of said cover (141) are PTFE.

20. System according to any one of the previous claims and it is characterized in that; said electrostatic head unit (200) comprises;

• at least one chassis (201 ) bearing at least one electrostatic head (210) and the required components,

• at least one drive component (250), which is fixed on the chassis (201 ) by a fixing component (251 ), and which drives/actuates the electrostatic head (210),

· at least one linear motion gear (260) providing movement of the head unit (200) on the linear motion unit (300),

• at least one carrier shaft (261 ), to which said gear (260) is connected, and which carries the head unit chassis (201), and

• at least one drive mechanism (262), which is connected to the carrier shaft (261 ) and which thus, moves the head unit (200) by driving the shaft (261 ) and the gear (260).

21. System according to Claim 20 and it is characterized in that; said electrostatic head (210) comprises:

• at least one corrugated distribution roller (211 ),

· at least one roller high voltage unit (215) connected to the shaft passing through the center of the roller,

• at least one distribution and sealing panel (220) providing distribution of the chemical on the roller (211 ) and closing at least one side of the roller (211 ) and leaving the part from where the product would be obtained, and

· at least one horizontal sealing component (240) providing sealing by being positioned between the panel (220) and the roller (211 ).

22. System according to Claim 21 and it is characterized in that; said distribution and sealing panel (220) comprises:

• main body (221 ) which would close one side of the corrugated roller (211 ),

• at least one channel (222), to which at least one piston (223) is connected to provide approaching and receding of the panel (220) to and from the distribution roller (211), formed at the outer surface of the panel,

• at least one support component (224), which is fixed at the outer surface of the panel, and which ensures the movements made via the piston (223) are linear, and

• at least one pipe connection component (225), which is fixed at the outer surface of the panel, and to which the pipe carrying the chemical is connected.

23. System according to Claim 22, and it is characterized in that; said distribution and sealing panel (220) also comprises:

• at least two sealing components (226), which ensure sealing by being fixed at two ends of the panel main body (221 ),

• at least one scraper (227), which scrapes the chemical found on the roller by being fixed on at least one edge of the panel that is close to the roller, and

• at least one mounting apparatus (228), which provide fixation of the scraper (227) on the panel main body (221 ).

24. System according to Claims 22, and it is characterized in that; electrostatic head unit (200) also comprises:

• at least one linear bearing (270), which provides bearing of said support component (224), and which provide linear motion of the distribution and sealing panel (220) via the piston (223), and

• at least two roller bearings (280) with bearing (281 ), on which bearing of said roller

(211) is provided.

25. System according to Claims 21 , and it is characterized in that; said roller (211) comprises:

• at least one transmission component connecting piece (213), which provide rotation of the roller (211 ) by taking the motion coming from at least one transmission component

(212) transmitting the drive taken from said drive component (250), and

• at least one mechanical seal (214) positioned at the end of the roller.

26. System according to Claims 21 and it is characterized in that; among the components found in said electrostatic head (210), only said roller (211) and the shaft passing through its centre is metal or derivative of a conductive material.

27. System according to Claim 20 and it is characterized in that; said linear motion unit (300) comprises:

• at least one linear carrier profile (310) carrying the electrostatic head unit (200), and

• at least one control rack (320), on which said linear motion gear (260) moves, fixed on the profile (310).

28. System according to Claim 27 and it is characterized in that; said linear motion unit (300) also comprises at least one support profile (330) supporting the control rack (320).

29. System according to Claim 27 and it is characterized in that; the gear (260) used for linear motion, its bearings, and said control rack (320) are made of plastics.

30. System according to Claim 1 and it is characterized in that; said collector (400) comprises a body (410) having adjustable height, at least one collector surface (420) positioned on this body (410), and at least one collector high voltage unit (430) connected to said collector (400).

31. System according to Claim 30 and it is characterized in that; only the collector surface (420) of said collector (400) is metal or derivative of a conductive material.