JP2008280651A - Method and device for producing polymer web - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To regulate or control the thickness, its change, fiber density, etc., by transferring a polymer web produced and collected on a web-carrying substrate material. <P>SOLUTION: This method for producing the polymer web is provided by forming a polymer web layer 7 on the web-carrying substrate material 4 by a process of collecting and piling by forming polymer fibers 2 by the ejection from a hole 9 of a polymer liquid 1 and electrostatic charge and collecting and piling on a collecting body 3 by an electric charge induction, a process of applying an adhesive 5 on the web-carrying substrate material 4, and a process of transferring for transferring the polymer web-piled layer 6 on the collecting body 3 to the web-carrying substrate material 4 through the adhesive 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  In the present invention, a polymer fiber produced by a so-called electrospinning method or electrospinning method, which involves at least stretching by electrostatic explosion in discharging and charging of a polymer solution, is charged on a collector. The present invention relates to a method and an apparatus for producing a polymer web suitable for producing a polymer web, particularly a porous polymer web in large quantities.

A technique for producing a polymer web by collecting and depositing polymer fibers produced by electrospinning or electrospinning on a collecting body or a sheet-like web-supporting substrate is already known. (For example, refer to Patent Document 1 or 2.)
JP 2002-201559 A US Pat. No. 6,713,011

  However, as disclosed in Patent Documents 1 and 2, it is not possible to regulate or control the deposition form simply by collecting and depositing the generated polymer fiber on the flat surface of the collector or the web-supporting substrate. However, as shown in FIG. 14, the thickness and form are not stable, for example, the surface of the polymer web layer b on the flat collector or the web-supporting substrate a is wavy and uneven. The technology corresponding to this is not disclosed in Patent Documents 1 and 2, and is not yet known. Further, even if the resulting polymer web layer b is porous, it cannot have a high fiber density.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a polymer web manufacturing method and apparatus capable of regulating or controlling the thickness, change thereof, fiber density, and the like by transferring polymer fibers that are generated and collected onto a web-supporting substrate. There is to do.

  In order to achieve the above object, according to the first aspect of the present invention, a polymer fiber is generated by discharging and charging a polymer solution through a hole, and the charge is induced on the collecting body and collected. And collecting and depositing steps to be deposited, an application step of applying an adhesive to the web-supporting substrate, and transferring a polymer fiber deposition layer on the collector onto the web-supporting substrate via the adhesive applied thereto. A polymer web layer is formed on the web-supporting substrate by a transfer step.

  According to such a feature, the polymer fiber deposition layer generated, collected and deposited on the collecting body is transferred onto the web-supporting substrate, so that the polymer formed by transfer onto the web-supporting substrate is formed. The web layer reflects the surface forms of both the transfer body and the transfer surface of the collecting body and the web-supporting substrate, thereby regulating or controlling the form of the polymer web layer produced. Also, the fiber density can be set by changing the layer thickness from the polymer fiber deposition layer to the polymer web layer after transfer, and the thickness of the polymer web layer to be manufactured is determined by the transfer surface and the surface to be transferred. Can be set. Moreover, since the transfer is performed via an adhesive, the transfer is reliably achieved, and the polymer web layer after the transfer is firmly supported on the web-supporting substrate.

  According to the fifth aspect of the present invention, such a method includes a polymer fiber generating means for generating a polymer fiber by discharging and charging the polymer solution from the hole, and the polymer fiber to be generated. Collecting, depositing means for collecting and depositing the resin on the collecting body, applying means for applying an adhesive on the web-supporting substrate, and polymer fiber deposition layer on the collecting body on the web-supporting substrate It can be automatically realized by a polymer web manufacturing apparatus comprising transfer means for transferring via an adhesive applied thereto.

  According to the second aspect of the present invention, in the first aspect, the transfer step is further performed with pressurization between the collecting body and the web-supporting substrate.

  According to such a feature, in addition to the first aspect, polymer fiber deposition on the collection body is further achieved by utilizing the proximity of the transfer surface and the transfer surface between the collection body and the web-supporting substrate during transfer. While the layer is pressed, it can be transferred onto the web-supporting substrate as a polymer web layer, and this pressurization greatly increases the fiber density of the polymer web layer from the fiber density of the polymer fiber deposition layer.

  According to the sixth aspect of the present invention, in addition to the fifth aspect, such a method is characterized in that the transfer means further includes a pressure-bonding means for pressure-bonding the collecting body and the web carrying substrate. It can implement | achieve by the manufacturing apparatus of the polymer web made into.

  According to the third aspect of the present invention, in the first or second aspect, the transfer step is further performed with heating to a predetermined temperature.

  According to such a feature, in addition to the first or second aspect, the evaporation of the solvent that may remain or adhere to the polymer fiber by transfer accompanied by heating is further accelerated. It is possible to accelerate curing and accelerate brazing to a transfer state from the polymer fiber deposition layer to the polymer web layer.

  In such a method, according to the seventh aspect of the present invention, in the fifth or sixth aspect, the transfer means further comprises a heating means for heating so as to transfer at a predetermined temperature. It can be realized by the manufacturing apparatus of the characteristic polymer web.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the collection, deposition step and the coating step are performed in parallel, and the collection, deposition step is performed on the collector. The coating process is continuously performed on the web carrier to be transported, and the transfer process is performed while the polymer fiber deposition layer deposited on the surface of the circulating collector is transported. It is characterized by being continuously carried out in contact with the adhesive layer on the web-supporting substrate.

  According to such a feature, in addition to any one of the first to third aspects, further, the continuous collection and deposition of the generated polymer fiber on the collection body, and the application to the web-supporting substrate are performed. Utilizing the polymer fiber on the surface of the collector that moves around in parallel with the continuous application of the adhesive, and the movement of the surface on which the adhesive on the web carrier to be conveyed is applied, The polymer fiber deposition layer on the collector and the adhesive on the web carrier can be brought into contact and transferred continuously.

  According to the ninth aspect of the present invention, in this method, in any one of the fifth to eighth aspects, the collection / deposition unit further rotates and supports the collection body by the support unit. Alternatively, the surface to be driven to circulate is subjected to continuous collection and deposition of polymer fibers generated from the polymer fiber generating means, and the coating means includes a supporting means for transporting the web-supporting substrate and a web-supporting substrate to be transported. And an adhesive supply means for supplying and applying an adhesive on the material. The transfer means collects and deposits polymer fibers on the surface of the collecting body, a transfer section downstream from the deposition position, and a web carrier. This is realized by a manufacturing apparatus for a polymer web, characterized in that contact or pressure-bonding with a transferred portion downstream from an application position where an adhesive is applied on the adhesive application surface of the material is achieved.

  According to an eighth aspect of the present invention, in any one of the fifth to seventh aspects, the collector further comprises a surface on which the polymer fiber is collected and deposited is a flat surface or an uneven surface. It is a feature.

  According to such a feature, the surface of the polymer fiber after transfer is pressed or pressed while realizing stable transfer of the polymer fiber layer using the flat adhesive-coated surface of the web-supporting substrate. Accordingly, the flat surface shape or the uneven shape of the surface of the collector can be reflected.

  According to the method and apparatus for producing a polymer web of the present invention, a polymer fiber deposition layer collected and deposited on a collecting body is transferred onto a web-supporting substrate via an adhesive to form a polymer web layer. Thus, a large amount of polymer fibers firmly supported on the web-supporting substrate can be efficiently produced. Further, the form of the polymer web layer can be regulated or controlled by the surface form of the collection body, the transfer surface of the web-supporting substrate, and the transfer surface. Furthermore, the thickness of the polymer web layer and the fiber density can be set according to the distance between the transfer surface and the surface to be transferred, which is suitable for non-woven fabrics and increases the responsiveness to demands in various applications.

  Hereinafter, a method and an apparatus for producing a polymer web according to an embodiment of the present invention will be described with reference to FIGS. 1 to 13 for the understanding of the present invention.

  The basic features of the polymer web manufacturing method of the present embodiment will be described with reference to FIGS. 1 to 4 showing some of its principles. A collection process in which a polymer fiber 2 having a small diameter, such as a nano-unit, is generated in a certain length or in a range of length and is induced to collect and deposit on the collection body 3 by electrostatic explosion and electrostatic stretching. Application process for applying the adhesive 5 to the web carrier 4 and transfer process for transferring the polymer fiber deposition layer 6 on the collecting body 3 to the web carrier 4 through the adhesive 5 applied thereto. Thus, the polymer web layer 7 is formed on the web carrying substrate 4. Such a method for producing a polymer web includes a polymer fiber generating means 11 for generating a polymer fiber 2 by discharging and charging the polymer liquid 1 from the holes 9 and charging the polymer fiber 2 to be produced. Collecting / depositing means 12 for collecting and depositing by inducing charge on the collecting body 3, applying means 13 for applying the adhesive 5 on the web carrying substrate 4, and a polymer fiber deposition layer 6 on the collecting body 3. It can be automatically realized by a polymer web manufacturing apparatus provided with a transfer means 14 for transferring onto a web carrying substrate 4 via an adhesive 5 applied thereto.

  Here, the polymer fiber generating means 11 is a nozzle type as shown in FIG. 1 in which the polymer solution 1 is supplied under pressure and discharged so as to be ejected from one or a plurality of holes 9. There is a container type as shown in FIGS. 2 to 4 in which 1 is stored and discharged from a large number of holes 9 by at least one of natural flow, pressurization, and rotational centrifugal force. The polymer liquid 1 to be discharged is charged by a method in which the voltage V1 applied from the power source 21 is applied to the conductive part of the nozzle or the container itself, and by inserting an electrode in an insulating capillary such as glass. There is a method in which the voltage V1 applied from the power source 21 to this electrode is directly applied to the polymer solution 1 supplied into the capillary and discharged. In the case of the container type, it is preferable to increase the charging efficiency by forming a hole 9 by protruding from the outer surface of the container and applying the voltage V1 to the tip portion from which the polymer liquid 1 is discharged. The spinning efficiency can be increased, and the amount of polymer fiber 2 produced and the fiber length can be increased. Here, the high voltage V1 is suitable for direct current, for example, about 1 KV to 100 KV.

  The collecting and depositing means 12 is supplied from the power source 22 to at least the surface to be the collecting surface of the collecting body 3 in order to induce a charge on the collecting body 3 having a potential difference therebetween. A voltage is applied to the collector 3 so as to reach the reverse polarity voltage V2, or is grounded to the ground.

  The coating means 13 is adapted to discharge and apply the adhesive 5 that supplies or accommodates the adhesive 5 onto the web carrier 4. However, any coating method may be used.

  The transfer means 14 differs depending on whether the collection body 3 and the web-supporting substrate 4 are a hard member, a soft member, or a flexible member. 1 and 2, the support means 31, 32 shown in the example of FIG. 3, or the backup means 33 for transfer as shown in FIG. The transfer interval in the transfer area of the substrate 4 is set. In some cases, heating and application of pressure are involved.

  As the polymer liquid 1, various polymers as already known, such as petroleum-based polymers such as polyvinylidene fluoride (FVDF), polyvinylidene fluoride-co-hexafluoropropylene, and polyacrylonitrile can be applied. In addition, a polymer such as a copolymer or a mixture thereof is melted or dissolved in an arbitrary solvent. The mixing ratio of the solvent and the polymer in the polymer liquid 1 varies depending on the solvent and the polymer, but the amount of the polymer is preferably between about 5% and 30%.

  According to the method and apparatus for producing a polymer web according to the present embodiment shown in principle, the polymer fiber deposition layer 6 produced, collected and deposited on the collection body 3 is converted into a web-supporting substrate. 4, the polymer web layer 7 formed by transferring onto the web carrying substrate 4 reflects both the surface form of the collection body 3 and the transfer surface of the web carrying substrate 4 and the surface to be transferred. This restricts or controls the form of the polymer web layer 7 produced. Further, the thickness of the polymer web layer 7 to be manufactured can be set depending on the distance between the transfer surface and the surface to be transferred, and the fiber density can be determined by changing the layer thickness from the polymer fiber deposition layer 6 to the polymer web layer 7 after transfer. Can be set. Further, since the transfer is performed through the adhesive 5, the transfer is reliably achieved, and the polymer web layer 7 after the transfer is firmly supported on the web support substrate 4.

  As a result, the polymer fiber deposition layer 6 collected and deposited on the collection body 3 is transferred onto the web carrying substrate 4 via the adhesive 5 to form the polymer web layer 7. It is possible to efficiently produce a large amount of the polymer fiber 2 firmly supported thereon. The form of the polymer web layer 7 can be regulated or controlled by the surface form of the collection body 3, the transfer surface of the web-supporting substrate 4, and the transfer surface. Furthermore, the thickness of the polymer web layer 7 and the fiber density can be set according to the distance between the transfer surface and the transfer surface, which is suitable for nonwoven fabrics and increases the responsiveness to demands in various applications.

  For example, when data is stored on a hard disk, mirror surface flatness is an important factor. The transfer method is the best method for ensuring such flatness on the surface of the resin, and high productivity can be maintained. Currently, the hard disk is usually made of aluminum or glass, but a substrate using a resin can store data at a high density like a hard disk.

  In the transfer in this case, further, pressurization between the collecting body 3 and the web-supporting substrate 4 is performed by using the support means 31 and 32 and the backup means 33, and the like. While pressing the polymer fiber deposition layer 6 on the collection body 3 with a simple and inexpensive structure between the transfer surface and the transfer surface between the collection body 3 and the web support base material 4, The molecular web layer 7 can be transferred, and this pressurization greatly increases the fiber density of the polymer web layer 7 from the fiber density of the polymer fiber deposition layer 6. Thereby, the improvement of the porosity per unit volume in the polymer web layer 7 and the refinement | miniaturization of a porous can be aimed at. Accordingly, the functions and applications are further expanded.

  In particular, irregularities can be formed on the surface of the collecting body 3 and transferred to the surface shape of the polymer web layer 7, whereby the surface area of the polymer web layer 7 increases regularly and stably. The nanofiber fineness of the polymer fiber 2 can significantly increase the reaction area in a fuel cell.

  Further, in the transfer in any of the above cases, by further heating to a predetermined temperature, the evaporation of the solvent that may remain or adhere to the polymer fiber 2 due to the transfer accompanying the heating is further accelerated. Acceleration of curing of the thermosetting adhesive 5 and acceleration of brazing to a transfer state from the polymer fiber deposition layer 6 to the polymer web layer 7 can be achieved. Thereby, even if the production speed is increased, it becomes easy to stabilize the transfer state and the form after transfer, which is advantageous for the production of a large amount of polymer web.

  Furthermore, in any of the above cases, as in the example of FIG. 1, the example of FIG. 2, the example of FIG. 3, and the example of FIG. In parallel, the collection and deposition processes are continuously performed on the rotating surface of the collection body 3, the coating process is continuously performed on the web carrier 4 to be conveyed, and the transfer process is performed during the collection. The polymer fiber deposition layer 6 deposited on the surface of the body 3 can be continuously brought into contact with the adhesive 5 on the web carrier 4 being conveyed. Accordingly, the surface of the collecting body 3 that moves around while the collection and deposition of the generated polymer fiber 2 on the collecting body 3 and the application of the adhesive 5 to the web carrier 4 are performed in parallel. The upper polymer fiber 2 and the adhesive 5 on the web carrier 4 to be conveyed are brought into contact with each other and transferred continuously, so that a large amount of the polymer web layer 7 can be more efficiently and continuously and continuously. Can be manufactured as.

  Such a method is the same as the example of FIG. 1, the example of FIG. 2, the example of FIG. 3, and the example of FIG. The collection body 3 is supported by the support means 31 and the surface that is rotated or circulated and rotated is used for continuous collection and deposition of the polymer fibers 2 generated from the polymer fiber generation means 11. The transfer unit 14 collects and deposits the polymer fibers 2 on the surface of the collecting body 3. The transfer unit 14 includes an adhesive supplying unit 34 that supplies the adhesive 5 onto the web carrying substrate 4 conveyed by the unit 32 and continuously applies the adhesive 5. The contact or pressure bonding between the transfer portion B downstream from the collection and deposition position A and the transferred portion D downstream from the application position C where the adhesive 5 on the adhesive application surface of the web carrier 4 is applied. Realized by.

  In order to realize this, in the example shown in FIG. 1, the collection body 3 made of a hard material that is supported and rotated by a support means 31 such as a bearing, and the sheet that is supported and conveyed by the support means 32 that is a conveyance roller. In combination with the web-supporting substrate 4 that is a sheet-like material, the transfer portion B of the web-supporting substrate 4 is supported by the support means 32 and is opposed to the transfer portion B of the collecting body 3 supported by the support means 31. Continuous transfer is performed between the transfer part B and the transferred part D. As a result, pressure, smoothness, and unevenness shaping can be performed during transfer, and a polymer web can be produced in a small space.

  In the example shown in FIG. 2, a collection body 3 made of a flexible material that supports a pair of support rollers as support means 31 and is driven around, and a sheet-like material that supports and conveys a plurality of transport rollers as support means 32. A pair of support members 32 of the web-supporting substrate 4 is combined with a web-supporting substrate 4 and a transfer portion B is formed between the support portions of a pair of support rollers that are support means 31 of the collecting body 3. The portion to be transferred D is defined as a portion to be transferred D between the support portions by the transport roller, and the pair of support rollers and the pair of transport rollers are arranged to face each other, so that the transfer portion B and the transfer portion D that are wide in the circumferential direction and the transport direction are continuous. Transcription is performed. As a result, the manufacturing space is increased, but the transfer efficiency of the polymer web layer 7 to be manufactured can be increased, and pressure can be applied at two locations where the pair of support rollers and the pair of transport rollers face each other. Can be shaped.

  In the example shown in FIG. 3, a collection body 3 made of a flexible material that supports a pair of support rollers as support means 31 and is driven around, and a sheet-like material that supports and conveys a plurality of transport rollers as support means 32. In addition to the combination of the web carrying substrate 4 and the transfer support B, the single support roller serving as the support means for the collecting body 3 is used as the transfer unit B, and the conveyance means 32 serving as the support means 32 for the web carrying substrate 4 is used. The transfer support portion by the roller is used as the transferred portion D, and both the transferred portion B and the transferred portion D are opposed to each other so that the circumferential direction and the conveying direction coincide with each other, and continuous transfer is performed between the transferred portion B and the transferred portion D. Has been done. As a result, pressure can be applied at the facing portion between one support roller and one transport roller, and smoothing and unevenness shaping can be performed.

  In the example shown in FIG. 4, a collection body 3 made of a flexible material that supports a pair of support rollers as support means 31 and is driven around, and a sheet-like material that supports a plurality of conveyance rollers as support means 32 and is folded and conveyed. A point where continuous transfer is carried out in such a way that a transfer portion B and a transferred portion D that are wide in the conveyance direction go around between two support rollers facing each other in combination with a certain web-supporting substrate 4. 2 is common to the example shown in FIG. 2, a backup roller as a backup means 33 is provided between two support rollers as the support means 31 of the collecting body 3, and a support means 32 of the web carrying substrate 4 is provided on this backup roller. These transfer rollers are opposed to each other so that transfer enhancement, pressurization, smoothing, and unevenness shaping can be performed between them.

  Four specific examples related to the example shown in FIG. 1 are shown in FIGS. In the specific example shown in FIG. 5, the flexible sheet-like web-supporting substrate 4 is pulled out from the winding portion 4 a, and the collection body 3 that is driven to rotate and the one conveying roller 41 as the support means 32. Then, the collecting body 3 and the conveying roller 41 face each other to be transferred between the transfer part B and the transferred part D, and then continuously sent out. The polymer fiber generating means 11 has one nozzle 42, and discharges the polymer fiber 2 toward the circumferential surface of the collecting body 3 by discharging from the hole 9 of the polymer solution to be supplied and charging from the power source 21, It is generated with a spread to a predetermined area due to electrostatic explosion. The polymer fiber 2 produced in this way is continuously induced by charge induction in a predetermined range in the width direction on the circumferential surface of the collecting body 3 due to a potential difference caused by charging or grounding of the circumferential surface of the collector 3 from the power source 22. The polymer fiber deposition layer 6 is collected and deposited. The collecting body 3 feeds the polymer fiber deposition layer 6 between the transfer part B and the transfer target part D to be continuously transferred to the web carrier 4. The web-supporting substrate 4 is a portion drawn out from the winding portion 4a, and is supplied with the adhesive 5 in a predetermined range in the width direction from a horizontally long adhesive supply means 34 as the application means 13, and then applied to the transfer. The polymer fiber deposition layer 6 fed between the parts B and D is transferred via the adhesive 5 via the adhesive 5, and the polymer web layer 7 is firmly supported and continuously sent out. . The figure shows a case where the surfaces of both the collecting body 3 and the conveying roller 41 are smooth, in particular, a case where mirror finishing is performed, and a flat polymer web can be manufactured. However, it is not limited to this.

  The specific example shown in FIG. 6 is different from the case of FIG. 5 in that the polymer fiber generating means 11 is formed by a plurality of nozzles 42, and there are many nozzles 42 in a predetermined range in the width direction of the circumferential surface of the collector 3. Only more polymer fiber 2 can be collected and deposited. As a result, if the circumferential speed of the surface of the collection body 3 is the same as in the case of FIG. 5, the thickness of the polymer fiber deposition layer 6 to be formed can be increased. Further, if the polymer fiber deposition layer 6 having the same thickness as that of FIG. 5 is formed, the circumferential speed of the collecting body 3 can be increased and the production speed of the polymer web can be increased.

  In the specific example shown in FIG. 7, the polymer fiber generating means 11 has a drum-type rotating container 44 that is rotationally driven while storing the supplied polymer solution 1, and has a large number of nozzle holes 42 provided on the peripheral surface. 9 differs from the specific examples shown in FIGS. 5 and 6 in that the polymer liquid 1 is discharged by centrifugal force from 9 and a large number of polymer fibers 2 are generated by charging from the power source 21. Yes. As a result, a large amount of polymer fiber 2 can be produced at a time without pressure. When pressure is applied thereto, a large number of polymer fibers 2 can be generated from the holes 9 of the nozzles 42 by spraying pressure and electrostatic explosion. However, since the polymer fiber 2 to be generated tends to fly around the rotating container 44, the potential difference between the polymer fiber 2 and the collector 3 is increased in order to collect and deposit the polymer fiber 2 on one collector 3. Ingenuity is necessary. As another method, it is also conceivable that the polymer fiber 2 generated toward the anti-collector 3 side of the rotating container 44 is charged toward the collector 3 by a reflector charged with the same polarity as the polymer fiber 2.

  In the specific example shown in FIG. 8, the polymer fiber generating means 11 has a drum-type rotary container 44 that is driven to rotate while storing the supplied polymer liquid 1 as in the specific example of FIG. A large number of polymer fibers 2 are generated by discharging the polymer solution 1 by centrifugal force from the holes 9 of the nozzles 42 provided on the peripheral surface and by charging from the power source 21. However, in the specific example shown in FIG. 7, the rotation axis of the rotating container 44 is parallel to the rotation axis of the collection body 3. In this specific example, the rotation axis of the rotation container 44 faces the collection body 3 side. The relationship is orthogonal to the rotation axis. As a result, the polymer fibers 2 generated so as to fly around the rotary container 44 are all oriented at right angles to the direction of charge induction toward the collection body 3, and the polymer fibers 2 are oriented toward the collection body 3. Do not mix things that face the other side or anything in between. For this reason, all the polymer fibers 2 to be generated can be induced to the side of the collector 3 almost equally. In this specific example, in particular, a reflecting plate 45 charged with the same polarity as the polymer fiber 2 to be produced is provided to increase the efficiency of charge induction toward the collector 3 side.

  In this specific example, the rotation drive mechanism of the rotating container 44 and the supply path of the polymer solution 1 are shown, and the present invention can be applied in common to the specific example shown in FIG. The drive mechanism cantilever-supports the rotary container 44 on the support base 52 by the rotary shaft 51 at one end thereof, and rotationally drives the rotary container 44 by belt transmission from the motor 53 on the support base 52 to the rotary shaft 51. is there. The polymer solution 1 is supplied through a non-rotating supply path 54 that passes through a hollow portion in the rotating shaft 51. The reflection plate 45 is fixed to the support base 52.

  FIG. 9 shows an example apparatus that performs pressurization and heating during transfer. The polymer web manufacturing apparatus of the present embodiment has the bearings 62 of the rotating shafts 61 at both ends of the transport roller 41 in the relationship between the collecting body 3 and the transport roller 41 in the specific examples shown in FIGS. It is supported by an actuator such as an air cylinder 63 so that it can be separated from, and pressed against, the collector 3. In addition, the one rotating shaft 61 is provided with a ventilation path 65 for blowing the hot air 64 into the conveyance roller 41, and the hot air 64 blown into the conveyance roller 41 through the ventilation path 65 on the circumferential surface of the conveyance roller 41. A large number of holes 66 for blowing out are provided. Thereby, the conveyance roller 41 can adjust the space | interval with the collection body 3, can be made to contact, or can be crimped | bonded, and can also adjust a crimping force. Accordingly, when the polymer fiber deposition layer 6 is transferred onto the web-supporting substrate 4, it can be adjusted to the polymer web layer 7 having a predetermined thickness with the same thickness or pressure. Further, when pressure is applied, shaping that reflects the surface state of the collection body 3 is facilitated, and if it is a flat surface, smooth surface, or mirror surface, a flat and uniform thickness polymer web layer as shown in FIG. 7 can be formed, and if the collector 3 has irregularities on the surface as shown in FIG. 12, it is shaped into a surface shape having irregularities opposite to the irregularities on the surface of the collector 3 as shown in FIG. can do. Further, the web carrying substrate 4, the adhesive 5, the polymer fiber deposition layer 6, and the collection body 3 that pass through the transfer part B and the transferred part D can be directly and indirectly heated by blowing out warm air 64, This accelerates the evaporation of the solvent of the polymer fiber 2, the curing of the adhesive 5, the brazing of the polymer fiber 2 to the transfer state, etc., and is advantageous for the production of a large amount of polymer web.

  For example, the polymer web manufacturing apparatus as shown in FIG. 10 is used to adjust the separation and contact of the conveying roller 41 with respect to the collection body 3 and the adjustment of the applied pressure, the blowing of hot air, the stop of blowing, and the adjustment of the temperature of the hot air. This is performed using a control unit 71 such as a microcomputer for controlling the operation of the computer. Specifically, pressurized air from an air pressure source 72 is supplied to the air cylinders 63, 63 via electromagnetic valves 73, 73, and the pressure of the pressurized air is programmed by the pressure detection means 74, 74. According to data, detected pressure information, information from the operation panel 75, etc., the solenoid valves 73, 73 are opened and closed and the opening degree is adjusted. A connection means 78 for turning on / off the power supply from the AC power supply 77 to the hot air generating means 76 for supplying the hot air 64 to the conveying roller 41 is supplied from the program data and the temperature detecting means 79 for detecting the temperature of the conveying roller 41. On / off control is performed according to temperature information, information from the operation panel 75, and the like. However, it is not limited to this.

  1 to 8, the high voltage V1 is applied to the hole for discharging the polymer liquid and the reverse electrode V2 is applied to the collector 3, but the side of the hole for discharging the polymer liquid is used. May be connected to ground, and electrospinning may be performed by applying a positive or negative high voltage to the collector 3.

  INDUSTRIAL APPLICABILITY The present invention is suitable for practical use in a technique for producing a large amount of a polymer web from an electrospun polymer fiber, and can be firmly supported on a web-supporting substrate to set and shape the thickness.

BRIEF DESCRIPTION OF THE DRAWINGS It is the 1st aspect figure which shows in principle the manufacturing method and apparatus of the polymer web of embodiment which concerns on this invention. It is the 2nd mode figure. It is the 3rd mode figure. It is the 4th mode figure. It is a perspective view which shows the 1st specific example of an apparatus of a 1st aspect figure. It is a perspective view which shows the 2nd example of a specific apparatus of the same aspect figure. It is a perspective view which shows the 3rd example of a specific apparatus of the same aspect figure. It is a perspective view which shows the 4th example of a specific apparatus of the same aspect figure. It is a perspective view which shows the Example apparatus which enabled it to pressurize and heat with the transcription | transfer corresponding to the specific example apparatus of FIGS. It is a block diagram which shows the main control systems in the Example apparatus of FIG. It is sectional drawing which shows the form of the polymer web layer transcribe | transferred and manufactured on the flat collection body surface. It is sectional drawing of the collection body which has an unevenness | corrugation on the surface. It is sectional drawing which shows the form of the polymer web layer transcribe | transferred and manufactured by the collection body of FIG. It is sectional drawing which shows the form of the polymer web layer manufactured with the conventional polymer web manufacturing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Polymer liquid 2 Polymer fiber 3 Collecting body 4 Web support base material 5 Adhesive 6 Polymer fiber deposition layer 7 Polymer web layer 9 Hole 11 Polymer fiber production | generation means 12 Collection and deposition means 13 Application | coating means 14 Transfer means 31 32 Support means 33 Backup means

Claims (9)

A collection and deposition process in which a polymer fiber is generated by discharging and charging from a hole of the polymer liquid, and the charge is induced to be collected and deposited on the collecting body, and a coating process in which an adhesive is applied to the web-supporting substrate. Forming a polymer web layer on the web-carrying substrate by transferring the polymer fiber deposition layer on the collecting body onto the web-carrying substrate via an adhesive applied thereto. A method for producing a polymer web. The method for producing a polymer web according to claim 1, wherein the transfer step is performed with pressurization between the collecting body and the web-supporting substrate. The method for producing a polymer web according to claim 1, wherein the transfer step is performed with heating to a predetermined temperature. The collection, deposition process and coating process are performed in parallel, and the collection and deposition processes are performed continuously on the surface of the collecting body, and the coating process is performed continuously on the web carrier to be transported. 4. The transfer process according to claim 1, wherein the transfer step is continuously performed by bringing the polymer fiber deposition layer deposited on the surface of the collecting body in circulation into contact with the adhesive layer on the web carrying substrate being conveyed. 5. A method for producing the polymer web as described. Polymer fiber generating means for generating a polymer fiber by discharging and charging a polymer liquid through a hole, and collecting and depositing means for collecting and depositing the generated polymer fiber on a collecting body by charge induction And an application means for applying an adhesive on the web-supporting substrate, and a transfer means for transferring the polymer fiber deposition layer on the collecting body onto the web-supporting substrate via the adhesive applied thereto. An apparatus for producing a polymer web, characterized by comprising: 6. The apparatus for producing a polymer web according to claim 5, wherein the transfer means includes a crimping means for crimping the collecting body and the web carrying substrate. 7. The apparatus for producing a polymer web according to claim 5, wherein the transfer means includes a heating means for heating so as to transfer at a predetermined temperature. The apparatus for producing a polymer web according to any one of claims 5 to 7, wherein the collecting body has a flat surface or an uneven surface on which the polymer fibers are collected and deposited. The collecting / depositing means provides a continuous collection and deposition of polymer fibers generated from the polymer fiber generating means by rotating or rotating the supporting body supported by the supporting means and rotating the surface, and the coating means comprises: It comprises a supporting means for conveying the web-supporting substrate and an adhesive supply means for supplying and applying an adhesive on the conveyed web-supporting substrate, and the transfer means collects the polymer fibers on the surface of the collecting body. And collecting and depositing, and transferring or pressing the transfer part downstream from the deposition position and the transferred part downstream from the application position where the adhesive on the adhesive-coated surface of the web-supporting substrate is applied. The polymer web manufacturing apparatus according to any one of the above.

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