WO2011152430A1 - 長尺シートの方向転換装置及び物体浮揚装置 - Google Patents
長尺シートの方向転換装置及び物体浮揚装置 Download PDFInfo
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- WO2011152430A1 WO2011152430A1 PCT/JP2011/062547 JP2011062547W WO2011152430A1 WO 2011152430 A1 WO2011152430 A1 WO 2011152430A1 JP 2011062547 W JP2011062547 W JP 2011062547W WO 2011152430 A1 WO2011152430 A1 WO 2011152430A1
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- porous resin
- resin layer
- direction changing
- changing device
- perforated container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/24—Registering, tensioning, smoothing or guiding webs longitudinally by fluid action, e.g. to retard the running web
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/32—Arrangements for turning or reversing webs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
- B65H2401/10—Materials
- B65H2401/11—Polymer compositions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
- B65H2401/20—Physical properties, e.g. lubricity
- B65H2401/242—Porosity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/10—Means using fluid made only for exhausting gaseous medium
- B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
- B65H2406/113—Details of the part distributing the air cushion
- B65H2406/1131—Porous material
Definitions
- the present invention relates to an apparatus for changing (converting) the traveling direction of a long sheet, and more specifically, a column-shaped perforated container that blows out air from the surface, and the traveling long sheet is levitated.
- the present invention relates to a direction changing device that changes a traveling direction while maintaining a state.
- a hollow column-shaped perforated container called a turn bar that changes the traveling direction of a long sheet that travels has been known.
- This turn bar allows the air supplied to the inside of the perforated container to blow out from the hole in the perforated container toward the long sheet and keep the long sheet floating from the perforated container while running the long sheet.
- the traveling direction of the long sheet is changed using the perforated container as a turning point.
- Patent Document 1 is a direction changing device (turn roll) that changes the traveling direction of a long sheet (long base material) that travels, and an air supply port that supplies air to a cavity inside the turn roll;
- the turn roll provided with the air blowing hole provided in the turn roll peripheral surface is described.
- a partition that divides the cavity inside the turn roll in the turn roll width direction is provided, and the inside of the turn roll divided by the partition It is described that an independent air supply port capable of adjusting the air supply amount is provided in each cavity.
- Patent Document 2 discloses a direction changing device (object levitation device) that conveys a long sheet (film-like material) while being floated by a fluid, and includes a plurality of fluid holes that serve as passages for fluid supplied from outside.
- a laminated object levitation device is described in which a laminated surface is formed by a thin plate, a fluid conveying surface is formed in the vicinity of the laminated surface, and a fluid flow path from the fluid hole toward the conveying surface is formed between the thin plates. Has been.
- Patent Document 3 discloses a direction changing device (film levitation direction changing device) that changes the traveling direction of a long sheet (film) that travels, and has a plurality of gas ejection holes formed in a film conveying surface.
- a hollow body is formed, both shaft ends are fixed to the apparatus body, a supply pipe for supplying a compressed fluid is connected to the hollow body at least one shaft end, and air is blown out from the gas ejection holes on the film transport surface.
- the film is conveyed in a non-contact state, and in particular, the cross-sectional shape of the direction changing member arranged in the direction changing portion of the conveyance guide for the levitation conveyance of the film is a semi-ellipse, an elliptic arc or a semi-circle, and a corner shape of an arc surface.
- a film levitation direction changing device in which the entrance side surface and the detachment side surface of the film transporter form a linear plane parallel to the film transport direction.
- Patent Document 3 a constant interval is provided on a film transport surface of a thin plate provided with a plurality of gas ejection holes at a direction changing portion, and a string-like object is wound to form a spiral gap with a constant pitch on the surface. It is also described to do.
- Patent Documents 1 to 3 basically describe the technical contents for reducing the opening area of the blowout holes in order to increase the flow velocity of the blown-out air.
- an object of the present invention is to provide a direction changing device that can reduce the amount of minute particles in the room.
- the present inventors have conflicted between the problem of reliably floating the long sheet from the surface of the perforated container and the problem of reducing the amount of air dissipated from the perforated container.
- We have conducted intensive research aimed at realizing a direction change device that can be solved.
- we also considered using a porous ceramic sintered body for the direction changing device but with a porous ceramic sintered body, a large volume of compressed air is required to reliably float a long sheet.
- the installation cost and running cost of the compressed air supply facility will increase.
- the fine particles of the sintered body are raised in the air, there is a concern that the air cleanliness is lowered.
- the long sheet direction changing device of the present invention that has solved the above problems has a columnar perforated container and a porous resin layer that covers the holes of the perforated container.
- the porous resin layer includes a laminated structure of porous resin films.
- the porous resin layer includes a wound structure of a porous resin film.
- the thickness of the porous resin layer is 0.1 to 20 mm.
- the outer surface of the porous resin layer has a cylindrical curved surface at least partially.
- the porous resin layer has an air permeability coefficient of 100 to 15000 mL / (cm 2 ⁇ min ⁇ MPa).
- the coefficient of variation of the air permeability coefficient of the porous resin layer is 30% or less.
- the porous resin film is a porous polytetrafluoroethylene film.
- the said direction change apparatus WHEREIN It is preferable that 1 or more holes with an internal diameter of 1 mm or more are formed with respect to the surface area 20cm ⁇ 2 > of the said perforated container.
- a water vapor generating device is connected in the perforated container, and it can be implemented in a form used for food conveyance.
- the long sheet direction changing device of the present invention that has solved the above-mentioned problems is constituted by arranging a plurality of object levitation members in parallel, each having a columnar perforated container and a porous resin layer covering the hole of the perforated container. It is what is done.
- a porous resin film is further detachably provided on the porous resin layer.
- the object levitation apparatus of the present invention is configured by arranging a plurality of object levitation members having a columnar perforated container and a porous resin layer covering the hole of the perforated container in parallel.
- the direction changing device of the present invention by forming the porous resin layer so as to cover the hole of the perforated container, the long sheet can be reliably removed from the porous resin layer while the inside of the perforated container is at a relatively low pressure. Can float. Moreover, since the amount of air dissipated from the direction changing device is small, the air cleanliness in the room where the direction changing device is operated is improved.
- FIG. 1 and 2 are diagrams showing a process of forming a direction changing device according to an embodiment of the present invention
- FIG. 3 is a perspective view of the completed direction changing device.
- a perforated container 1 having a hollow columnar shape and having holes 2 formed on the side surfaces thereof is prepared.
- a porous resin layer 3 is formed so as to cover the holes 2 of the perforated container 1 as shown in FIG.
- the direction change apparatus which has the column-shaped perforated container 1 and the porous resin layer 3 which covers the hole 2 of this perforated container 1 is formed.
- the porous resin layer 3 may be composed of a single layer of a porous resin film, but a preferable thickness described later can be ensured by adopting a laminated structure (including a wound structure) of the porous resin film. it can.
- the pressurized gas passes through the hole 2 and further passes through the porous resin layer 3 and is diffused out of the direction changing device. Is done. At this time, the airflow state and the atmospheric pressure distribution on the surface of the porous resin layer 3 have not been completely clarified, but a very fine airflow isotropic in various directions as well as in the vertical direction of the porous resin layer 3. It is thought that it has occurred. Although a large amount of high-speed airflow is not observed as in the conventional direction changing device, a very smooth body levitation force works near the surface of the porous resin layer 3.
- FIG. 4 is a diagram showing an example of use of the direction changing device according to the embodiment of the present invention.
- a porous sheet is formed by hooking a long sheet (for example, one used as a conveyor belt for articles) over a half circumference of the direction changing device and feeding pressurized gas into the perforated container 1 in that state. The air is diffused from the surface 3 and the long sheet floats up, so that the long sheet travels smoothly.
- the material constituting the porous resin layer 3 includes various polyolefins such as polyethylene and polypropylene, polyvinyl chloride, polyamide, polycarbonate, polyphenylene ether, polyethylene terephthalate, polybutylene terephthalate, polyurethane and the like, and mixtures and laminates thereof.
- Resin porous films can be used.
- ultrahigh molecular weight olefins and polytetrafluoroethylene (PTFE) are preferable because they have a high melt viscosity, so that even if a certain amount of heat is applied after the production of the porous resin layer 3, the shape of the pores does not change greatly. .
- polytetrafluoroethylene has a high melt viscosity, high heat resistance, and a small amount of gas generation / dust generation. Therefore, it is more suitable when the direction changing device is used for a clean room or the like.
- polytetrafluoroethylene since polytetrafluoroethylene has excellent surface releasability, even if the supply of pressurized gas into the perforated container 1 is stopped due to the influence of a power failure or the like while the long sheet is running, it is porous. The quality resin layer 3 and the long sheet slide relatively smoothly while contacting each other. Therefore, damage to the long sheet due to a sudden stop of the entire apparatus system can be minimized. Therefore, the use of polytetrafluoroethylene as a material constituting the porous resin layer 3 brings about a very advantageous effect regardless of whether the pressurized gas is supplied or not supplied.
- the direction changing device can be used in a temperature range from an extremely low temperature of minus 100 ° C. to a high temperature of 260 ° C.
- a steam generator for feeding heated steam having a high heat capacity into the perforated container 1, it is possible to transport food while cooking.
- a film having a porous structure by a phase separation method As the porous resin film constituting the porous resin layer 3, a film having a porous structure by a phase separation method, a film having a porous structure by a pore-forming agent, a film having a porous structure by stretching, or the like can be used.
- a pore-forming agent if the filler content as a pore-forming agent is large, the pore size distribution becomes wide and the filler is likely to fall off, so the filler content is 50% by mass. The following is desirable.
- the porous resin film is formed by stretching using a polytetrafluoroethylene material
- the mixture of PTFE fine powder and lubricant is formed into an extruded molded body (paste molded body), and then stretched after removing the lubricant.
- Any of a green body, a semi-green body, and a fired body can be used as the paste molded body to be stretched, but one using a green body having good self-fusing properties is more preferable.
- a stretching method any of uniaxial stretching, biaxial simultaneous stretching, and sequential biaxial stretching performed at a melting point of PTFE or less can be applied.
- the porosity of the porous resin film is, for example, 40% or more (preferably 60% or more, more preferably 70% or more), 95% or less (preferably 93% or less, more preferably 90% or less). Is recommended.
- the porosity of the porous resin film can be appropriately adjusted depending on the draw ratio. The porosity as described above is recommended because if the porosity is too low, the ventilation resistance of the porous resin layer 3 becomes high, and a high-pressure pressurized gas is required to float the long sheet. Because it will end up. On the other hand, there is no particular limitation on the upper limit of the porosity, but if it is too high, the air flow from the individual holes 2 of the perforated container 1 cannot be made uniform by the porous resin layer 3, and the above range is recommended.
- the thickness at the time of calculating the volume V can be an average thickness measured with a dial thickness gauge (measured without using a load other than the main body spring load using “SM-1201” manufactured by Teclock Co.). .
- Porosity (%) [(2.2 ⁇ D 2 ) /2.2)] ⁇ 100 (1)
- the thickness of one porous resin film is not particularly limited, but is the total thickness of the porous resin layer 3 (in the case of a single layer, it is one thickness, and when a plurality of layers are laminated, it indicates the total thickness) Is, for example, 0.1 mm or more, preferably 0.4 mm or more, more preferably 1 mm or more. This is because if the total thickness of the porous resin layer 3 is too small, a phenomenon occurs in which the porous resin layer 3 swells away from the perforated container 1 due to the pressure of the pressurized gas. Further, the airflow from the individual holes 2 of the perforated container 1 cannot be made uniform.
- the pore diameter of the porous resin film is about 0.2 to 10 ⁇ m, preferably about 0.2 to 5 ⁇ m.
- the total thickness of the porous resin layer 3 is, for example, 20 mm or less, preferably 15 mm or less, and more preferably 10 mm or less.
- porous resin film As a laminated form of the porous resin film, for example, a plurality of porous resin films can be wound concentrically around the perforated container 1.
- a porous resin film having a higher porosity is effective for uniformly diffusing air, but is likely to be clogged with dust in the air and may not be stable for a long period of time. Therefore, use a high porosity that is less likely to cause clogging on the perforated container 1 side of the direction changing device, and a low porosity that is effective for uniform air diffusion on the front side of the direction changing device. It is effective to use.
- the porosity of the porous resin film closest to the porous container 1 side is 1.5 times or more, more preferably 2 times the porosity of the porous resin film on the outermost surface side of the direction changing device. Above, more preferably 3 times or more.
- porous resin film As another laminated form of the porous resin film, a form in which one porous resin film is wound around the perforated container 1 is conceivable. In the case of winding, it is preferable that the porous resin film is firmly fixed to the perforated container 1 by heating and shrinking the porous resin film after the porous resin film is wound around the perforated container 1.
- the long sheet 6 since the vicinity of the surface of the porous resin layer 3 is an important part, it is necessary to secure this part as a space where nothing is arranged. For this reason, it is not desirable to fix the porous resin layer 3 using any device outside the porous resin layer 3.
- the above-described lamination by winding is effective as a fixing means using the heat shrinkage of the porous resin film, and is very preferable as a form of the direction changing device of the present invention.
- the preferable number of times of winding is, for example, two or more rounds of the perforated container 1, more preferably five or more rounds, and further preferably seven or more rounds.
- an adhesive such as a thermoplastic resin fine powder or a thermosetting resin such as an epoxy resin can be used for interlayer adhesion of the porous resin film.
- the adhesive is not only applied to the surface of the porous resin film, but also semi-cured (B-stage) by impregnating the pores of the porous resin film with a thermosetting resin adhesive and drying, for example. It is also possible to adopt a method of laminating these and performing heat treatment.
- the air permeability coefficient of the porous resin layer 3 (K: an index indicating air resistance.
- the unit is mL / (cm 2 ⁇ min ⁇ MPa).
- the unit may be omitted hereinafter) is 100 to 15000. It is desirable. This is because by setting the air permeability coefficient (K) to 100 or more, the long sheet can be floated more reliably. Moreover, when the air permeability coefficient (K) is less than 100, the surface smoothness of the porous resin layer 3 may have to be extremely increased, which is uneconomical.
- the air permeability coefficient (K) exceeds 15000, a large volume of compressed air is required, which may increase the installation cost and running cost of the compressed air supply equipment. Further, when the long tape 6 to be levitated is placed on the working surface, which is the surface of the porous resin layer 3, the diffusion of compressed air from the hole under the long tape 6 is greatly hindered, and stability cannot be obtained. . Therefore, it is desirable that the air permeability coefficient (K) is 15000 or less.
- the air permeability coefficient (K) is more preferably 300 to 10,000, and further preferably 500 to 7000.
- the air permeability coefficient (K) can be measured as follows. First, compressed air with a constant pressure (MPa) is supplied to the perforated container 1, and the amount of air (mL / min) diffused to the levitation surface, which is the surface of the porous resin layer 3, is measured (manufactured by Horiba Estec) High precision precision membrane flow meter SF-1U). Next, the value of the measured amount of diffused air is divided by the measurement area (cm 2 ) to obtain the air flow rate V (mL / cm 2 ⁇ min) per unit area. Furthermore, the same measurement is performed by changing the pressure P (MPa) of the compressed air supplied to the perforated container 1 in various ways.
- the value of the air permeability coefficient (K) does not vary so much between different regions of the porous resin layer 3. This is because the long sheet 6 is floated stably with good balance. Therefore, the variation coefficient of the air permeability coefficient is preferably 30% or less, more preferably 15% or less. If the coefficient of variation (C) is more than 30%, the stability of the levitation force may be deteriorated. In particular, when the width of the long tape 6 is narrow, the levitation stability may be lacking.
- the coefficient of variation (C) can be measured as follows. First, the levitation action surface which is the surface of the porous resin layer 3 can be divided equally into five sections. The air permeability coefficient (K) is measured at one measurement point on behalf of each section, and the average value (Km) and standard deviation ( ⁇ ) of the five measured values in each of the five sections are used, and the following formula (4) Thus, the coefficient of variation (C) of the air permeability coefficient (K) can be calculated.
- C (%) ( ⁇ / Km) ⁇ 100 (4)
- a reinforcing film is formed between the porous container 1 and the porous resin layer 3 or in the porous resin layer 3. This is to prevent the phenomenon that the porous resin layer 3 swells away from the perforated container 1 due to the pressure of the pressurized gas.
- a reinforcing film can be inserted between the porous resin films to be laminated.
- Reinforcing membrane materials include glass fiber fabrics, carbon fiber fabrics, non-woven fabrics, fabrics made of super engineering plastics such as aramid and Teflon (registered trademark), stainless meshes, and other materials that have strength and rigidity without impairing air permeability. Can be used.
- the position where the reinforcing membrane is installed may be one closer to the perforated container 1 side, farther from the perforated container 1, or an intermediate position between them, but if it is installed closer to the perforated container 1 side, A function of distributing the pressurized gas to the entire porous resin layer 3 and a buffer function of reducing the pressure can be expected.
- the thickness of the outermost porous resin film is 100 ⁇ m or more, preferably 150 ⁇ m or more, more preferably 200 ⁇ m or more.
- porous resin films are bonded to each other or the porous resin layer (film) and the reinforcing film are bonded to each other, it is desirable that the porous resin film (film) is bonded only to a part of the porous resin layer (film). This is because gas permeation is not hindered.
- fusing using a reinforcing film having air permeability and fusibility the whole surface may be fused.
- thermosetting resins such as phenol and polyimide
- these materials cannot be self-bonded, so an adhesive is required, and the holes are clogged by the adhesive. There is a risk of causing. Therefore, in order to utilize such a resin material, it is desirable to perform lamination processing with a porous resin film in a semi-cured (B-stage) state before the resin is completely cured.
- the surface of the porous resin layer 3 is subjected to an antistatic treatment or a liquid repellent (for example, a liquid repellent polymer) is added for waterproofing and antifouling.
- a liquid repellent for example, a liquid repellent polymer
- an antistatic agent containing a quaternary ammonium surfactant, or an antistatic agent containing conductive fine powder such as silicate, carbon nanotube, or carbon nanofiber can be used.
- a waterproof / antifouling treatment method for example, the surface of the porous resin layer 3 can be coated with a water / oil repellent polymer. By this treatment, various contaminants such as machine oil and water droplets can be prevented from penetrating or being retained in the pores of the porous resin layer 3.
- liquid repellent refers to a substance that has a property or function of repelling liquid
- liquid repellent includes “water repellent”, “water repellent”. It includes “oil agent”, “water / oil repellent” and the like.
- the material of the perforated container 1 There is no restriction
- the pore structure of the porous ceramic sintered body is determined by the particle size and shape of the fine powder of the raw material and the sintering method, but it is extremely difficult and costly to equalize the pore size and align the pore direction. It takes.
- a porous resin material that can easily control the pore structure is used. As a result, the distribution and direction of the pores in the thickness direction of the porous resin film become very uniform, and the vector of pressurized gas that diffuses to the surface of the porous resin film is aligned to support the floating object uniformly. Can be levitated.
- the porous ceramic sintered body has a three-dimensional isotropic pore structure, the pressurized gas is also diffused from the surface (end surface) other than the surface facing the floating object.
- a thermosetting resin or the like is applied to the end face and cured to seal the end face, which is a very time consuming operation.
- the porous resin has a soft structure, sealing can be easily performed only by mechanically compressing the end face or heating and compressing it.
- the porous ceramic sintered body is generally formed of a large bulk material and cut into a necessary shape, or a necessary shape processing is performed by sintering molding using a mold.
- a necessary shape processing is performed by sintering molding using a mold.
- FIG. 5 is a diagram showing a usage example of another direction changing apparatus according to the embodiment of the present invention.
- a direction changing device is configured by arranging a plurality of object levitation members 13 having a columnar perforated container 1 and a porous resin layer 3 covering the hole 2 of the perforated container 1 in parallel.
- the long sheet 6 is hooked over about half a circumference of the above-mentioned direction changing device, and air is diffused from the surface of the porous resin layer 3 by sending pressurized gas into each of the perforated containers 1 in this state. Since the long sheet 6 is levitated, the long sheet 6 runs smoothly.
- the object levitation members 13 are arranged in a circular shape, but it is sufficient that a plurality of object levitation members 13 are arranged in parallel (that is, the object levitation members face in the same direction), It may be oval.
- a porous resin film (not shown) is further detachably provided on the porous resin layer 3. Even if liquid or sticky material adheres to the porous resin film during operation of the direction change device, it is very easy to maintain the direction change device by replacing the porous resin membrane with another porous resin membrane. It is.
- the material of the porous resin film the same material as the porous resin film in the porous resin layer 3 can be used, and it is most preferable to use a porous PTFE material.
- FIG. 6 shows an object levitation device derived from the direction changing device of the present invention.
- the conveyance object 12 can be levitated and conveyed.
- the transport object 12 is heavy, by setting the perforated container 1 to a prismatic shape, the area where the surface of the porous resin layer 3 and the transport object 12 face each other increases, and the levitation force can be increased.
- the levitation force can also be increased by reducing the diameter of the perforated container 1 and spreading a large number of it.
- the object levitation apparatus of the present invention differs from the direction change apparatus of the present invention that changes the traveling direction of the long sheet, but the object to be levitated is different, but a variation of the perforated container 1 and the porous resin layer 3 that can be taken. Since the operational effects that can be enjoyed are the same, detailed description is omitted.
- the object levitation members 13 are arranged on the same plane, but a plurality of object levitation members 13 may be arranged in parallel, and the object levitation members 13 may be arranged in a curved shape.
- FIG. 7 shows a test device for the direction changing device in the embodiment of the present invention.
- the direction changing device 4 and the guide rail 9 are fixed on the test table 5.
- a long sheet 6 having a fixed bar 8 attached to one end and a weight 7 attached to the other end was hooked on the direction changing device 4 provided with the perforated container 1 and the porous resin layer 3.
- An adhesive tape was used as the long sheet 6, and the adhesive side of the adhesive tape was directed to the long sheet 6.
- a compressed gas supply device (for example, a compressor) 11 was connected to the direction changing device 4 by a gas supply hose 10. Pressurized gas fed from the compressed gas supply device 11 was introduced into the direction changing device 4, thereby floating the long sheet 6. In this state, the fixing bar 8 was moved in the horizontal direction along the guide rail 9 to change the direction of the adhesive tape as the long sheet 6 by 90 degrees on the direction changing device 4.
- Example 1 As the perforated container 1, a stainless steel pipe provided with four holes of 5 mm ⁇ at equal intervals in the circumferential direction was used.
- the stainless steel pipe had an outer diameter of 34 mm, an inner diameter of 28 mm, and a length of 150 mm. Both ends were welded and sealed with a stainless steel plate having a thickness of 2 mm, and drilled so that the connector of the gas supply hose 10 could be attached to one end.
- a biaxially stretched porous PTFE film (manufactured by Japan Gore-Tex, film thickness: 125 ⁇ m, apparent density: 0.436) was used.
- This biaxially stretched porous PTFE film is produced by extruding a paste from PTFE fine powder (trade name: Polyflon F104) manufactured by Daikin Industries, Ltd., and rolling, rolling the lubricant, stretching, and firing. It is.
- This biaxially stretched porous PTFE film was cut into a size of 250 mm in width and 3 m in length.
- a woven fabric made of expanded PTFE (manufactured by Japan Gore-Tex Co., Ltd., fiber maintenance: 380 denier, basis weight: 183 g / m 2 ) was used as the reinforcing membrane, and this was cut into a size of 250 mm in width and 1 m in length.
- the biaxially stretched porous PTFE film prepared as described above and the stretched PTFE woven fabric were stretched so as to have no wrinkles, and the width was aligned and spread.
- tip part it piled up so that the front-end
- the stainless steel pipe wound with the biaxially stretched porous PTFE film and the stretched PTFE woven fabric was placed on a jig supported at both ends, placed in an oven, and heat-treated at 340 ° C. About 10 hours later, it was taken out from the oven while being placed on the jig, and cooled to room temperature by natural cooling.
- Example 2 As the porous resin film, a uniaxially stretched porous PTFE film (manufactured by Japan Gore-Tex, film thickness: 165 ⁇ m, apparent density: 0.564) was used. This uniaxially stretched porous PTFE film was produced by extruding paste from PTFE fine powder (trade name: Polyflon F104) manufactured by Daikin Industries, Ltd., and then passing through roll rolling, lubricant drying, stretching, and firing. It is. This uniaxially stretched porous PTFE film was cut into a size having a width of 250 mm and a length of 4 m.
- PTFE fine powder trade name: Polyflon F104
- a stretched PTFE woven fabric (manufactured by Japan Gore-Tex Corporation, elemental fiber maintenance: 380 denier, basis weight: 183 g / m 2 ) is used, and this is cut into a size of 250 mm in width and 50 cm in length. It was.
- Example 2 Other conditions were the same as in Example 1 to obtain the direction changing device (2).
- the outer diameter of this direction changing device (2) was 39 mm.
- Example 3 As the porous resin film, a polypropylene porous film (trade name: NG100, manufactured by Tokuyama Corporation, thickness: 110 ⁇ m) cut to a width of 250 mm and a length of 2 m was prepared.
- NG100 polypropylene porous film
- a 300-mesh stainless screen (wire diameter 30 ⁇ m, manufactured by Mesh Co., Ltd.) cut to a width of 150 mm and a length of 2 m was prepared.
- Example 2 a stainless steel screen was wound concentrically on the same stainless steel pipe as in Example 1, and then a polypropylene porous film was wound concentrically without wrinkles. Further, the same uniaxially stretched porous PTFE film as that used in Example 2 was further wound around 5 times. The uniaxially stretched porous PTFE film was used because it contracted when heat-treated and had an effect of tightening.
- the stainless steel pipe was placed on the same jig as in Example 1, placed in an oven, and heat-treated at 155 ° C. About 5 hours later, it was removed from the oven while being placed on a jig, and cooled to room temperature by natural cooling.
- the direction changing device (3) had an outer diameter of 37 mm.
- the air permeability coefficient (K) and coefficient of variation (C) of the porous resin film in the above direction changing devices (1) to (3) are as shown in Table 1 below.
- the ventilation coefficient (K) and the coefficient of variation (C) of the porous pipe and the diffuser pipe in the above direction changing devices (4) to (6) are as shown in Table 1 above.
- the adhesive tape was moved again in the longitudinal direction to confirm whether it could be moved without being affected by the adhesive of the adhesive tape (second time).
- Table 1 above shows the results of tests performed by changing the pressure of the pressurized gas to 0.05 MPa, 0.1 MPa, 0.2 MPa, and 0.3 MPa.
- the direction changing devices used are the above six types (1) to (6).
- Table 1 shows the result of the test (first time) performed in the initial operation of the direction changing device and the result of the test (second time) performed after 1 hour.
- the evaluation criteria in Table 1 are as follows. ⁇ : The adhesive tape can be moved freely without being affected by the adhesive. (Triangle
- the pressure of the pressurized gas is set to 0.
- the pressure was increased to 3 MPa, the pressure was slightly improved, but at a pressure lower than that, the pressure-sensitive adhesive adhered to the direction changing device, and the pressure-sensitive adhesive tape could not be moved.
- the direction changing devices (1) to (3) using the porous resin film which is an embodiment of the present invention the levitation state of the adhesive tape is good, so that it is not affected by the adhesive, The adhesive tape was able to move very smoothly.
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Laminated Bodies (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
Description
空孔率(%)=[(2.2-D2)/2.2)]×100 (1)
V(mL/cm2・分)=KP ・・・(2)
K(mL/(cm2・分・MPa))=V/P ・・・(3)
C(%)=(σ/Km)・100 ・・・(4)
図7は、本発明の実施例における方向転換装置の試験装置を示すである。図7において、試験台5上には方向転換装置4とガイドレール9が固定されている。有孔容器1と多孔質樹脂層3を備えた方向転換装置4には、一端部に固定バー8、他端部に錘7が取り付けられた長尺シート6を引っ掛けた。長尺シート6として粘着テープを使用し、粘着テープの粘着剤側を長尺シート6に向けた。方向転換装置4には気体送給ホース10により圧縮気体供給装置(例えばコンプレッサー)11を接続した。圧縮気体供給装置11から送給される加圧気体を方向転換装置4に導入し、これによって長尺シート6を浮揚させた。この状態で固定バー8をガイドレール9に沿って水平方向に動かすことにより長尺シート6である粘着テープを方向転換装置4上で90度方向転換させた。
有孔容器1として、ステンレスパイプの中央部に5mmφの穴を円周方向に等間隔に4個設けたものを用いた。ステンレスパイプは、外径34mm、内径28mm、長さ150mmであり、両端を厚さ2mmのステンレス板で溶接封止し、片端に気体送給ホース10のコネクターを取り付けられるように穴開け加工した。
多孔質樹脂膜として、1軸延伸多孔質PTFEフィルム(ジャパンゴアテックス社製、フィルム厚さ:165μm、見掛け密度:0.564)を用いた。この1軸延伸多孔質PTFEフィルムは、ダイキン工業株式会社製のPTFEファインパウダー(商品名:ポリフロンF104)からペースト押し出し、ロール圧延、潤滑剤乾燥、延伸、焼成の各工程を経ることにより製造したものである。この1軸延伸多孔質PTFEフィルムを幅250mm、長さ4mのサイズにカットした。
多孔質樹脂膜として、ポリプロピレンの多孔質膜(商品名:NG100、株式会社トクヤマ製、厚さ:110μm)を幅250mm、長さ2mにカットしたものを用意した。
市販の超高分子量ポリエチレン製の多孔質パイプ(内径:30mm、外径:40mm、肉厚:5mm、長さ:150mm、平均気孔径:5μm、株式会社染谷製作所製)をそのまま方向転換装置(4)とした。
市販の超高分子量ポリエチレン製の多孔質パイプ(内径:30mm、外径:40mm、肉厚:5mm、長さ:150mm、平均気孔径:15μm、株式会社染谷製作所製)をそのまま方向転換装置(5)とした。
市販の多孔質セラミック製散気管(商品名:エアーストーンNR-S304、株式会社イワキポンプ製)をそのまま方向転換装置(6)とした。
図7に示した試験装置に、方向転換装置(1)~(6)を取り付けて粘着テープの走行方向の転換試験を行った。粘着テープ(商品名:No3705スーパー、幅:5cm、日東電工株式会社製)に500gの錘7をぶらさげることにより100g/cmの荷重をかけた。粘着剤面を方向転換装置に対向させて、90度の方向転換の状態にて方向転換装置上で粘着テープを長手方向に往復させ(図7)、粘着テープの粘着剤の影響を受けずに動かせるかどうかを確認した(1回目)。
○:粘着剤の影響を受けず、粘着テープを自由に動かせる。
△:粘着剤が影響し、所々に引っ掛かりがある。
×:粘着剤が方向転換装置に粘着し、粘着テープを動かせない。
2 孔
3 多孔質樹脂膜
4 方向転換装置
5 試験台
6 長尺シート
7 錘
8 固定バー
9 ガイドレール
10 気体送給ホース
11 圧縮気体供給装置
12 搬送物体
13 物体浮揚部材
Claims (17)
- 柱状の有孔容器と、該有孔容器の孔を覆う多孔質樹脂層とを有することを特徴とする長尺シートの方向転換装置。
- 前記多孔質樹脂層が多孔質樹脂膜の積層構造を含む請求項1に記載の方向転換装置。
- 前記多孔質樹脂層が多孔質樹脂膜の巻回構造を含む請求項1または2に記載の方向転換装置。
- 前記多孔質樹脂層の厚さが0.1~20mmである請求項1~3のいずれかに記載の方向転換装置。
- 前記多孔質樹脂層の外面は、少なくとも一部に円柱曲面を有する請求項1~4のいずれかに記載の方向転換装置。
- 前記多孔質樹脂層の通気係数が100~15000mL/(cm2・分・MPa)である請求項1~5のいずれかに記載の方向転換装置。
- 前記多孔質樹脂層の通気係数の変動係数が30%以下である請求項6に記載の方向転換装置。
- 前記多孔質樹脂膜が多孔質ポリテトラフルオロエチレン膜である請求項2~7のいずれかに記載の方向転換装置。
- 前記有孔容器と前記多孔質樹脂層の間、または、前記多孔質樹脂層中に、補強膜が形成されている請求項1~8のいずれかに記載の方向転換装置。
- 前記補強膜の一部が前記多孔質樹脂層に固着されている請求項9に記載の方向転換装置。
- 前記多孔質樹脂層の表面に撥液剤が添加されている請求項1~10のいずれかに記載の方向転換装置。
- 前記有孔容器の表面積20cm2に対して、内径1mm以上の穴が1個以上形成されている請求項1~11のいずれかに記載の方向転換装置。
- 前記有孔容器に圧縮気体供給装置が接続されている請求項1~12のいずれかに記載の方向転換装置。
- 前記有孔容器に水蒸気発生装置が接続されており食品搬送に用いる請求項1~13のいずれかに記載の方向転換装置。
- 柱状の有孔容器と、該有孔容器の孔を覆う多孔質樹脂層とを有する物体浮揚部材を並列に複数並べて構成される長尺シートの方向転換装置。
- 前記多孔質樹脂層上に更に多孔質樹脂膜が着脱可能に設けられている請求項1~15のいずれかに記載の方向転換装置。
- 柱状の有孔容器と、該有孔容器の孔を覆う多孔質樹脂層とを有する物体浮揚部材を並列に複数並べて構成される物体浮揚装置。
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KR1020127030211A KR20130086940A (ko) | 2010-06-01 | 2011-05-31 | 장척 시트의 방향 전환 장치 및 물체 부양 장치 |
CN2011800270734A CN102947207A (zh) | 2010-06-01 | 2011-05-31 | 长片材的方向转换装置及物体浮动装置 |
CA2798032A CA2798032A1 (en) | 2010-06-01 | 2011-05-31 | Apparatus for change of direction of long sheet, and article floating apparatus |
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JP2010126137A JP2011251803A (ja) | 2010-06-01 | 2010-06-01 | 長尺シートの方向転換装置 |
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Cited By (1)
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KR20170047392A (ko) * | 2014-09-05 | 2017-05-04 | 뉴 웨이 머신 컴포넌츠, 인코포레이티드 | 기체 베어링, 다공성 매체 진공 롤러 및 다공성 매체 에어 턴 |
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KR101746253B1 (ko) * | 2013-02-01 | 2017-06-12 | 주식회사 엘지화학 | 롤 프린팅 장치 및 이를 이용한 롤 프린팅 방법 |
JP6024556B2 (ja) * | 2013-03-27 | 2016-11-16 | 日本ゼオン株式会社 | 塗工層付きフィルム状基材の製造方法 |
JP6040829B2 (ja) * | 2013-03-27 | 2016-12-07 | 日本ゼオン株式会社 | 二次電池用セパレータの製造方法、二次電池用セパレータおよび電池 |
KR101506141B1 (ko) * | 2013-11-04 | 2015-03-26 | 코닝정밀소재 주식회사 | 장력 조절장치 및 이를 이용한 웹 연속처리방법 |
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JP6527981B1 (ja) * | 2018-03-27 | 2019-06-12 | 株式会社タンケンシールセーコウ | ターンバー |
JP7451882B2 (ja) * | 2019-05-30 | 2024-03-19 | 日本ゼオン株式会社 | 搬送ローラー |
CN110217627B (zh) * | 2019-07-01 | 2020-07-28 | 重庆瑞霆塑胶有限公司 | 薄膜牵引用气辊 |
WO2023021818A1 (ja) | 2021-08-16 | 2023-02-23 | 富士フイルム株式会社 | エアバー、乾燥装置、及びインクジェット印刷装置 |
WO2024121940A1 (ja) * | 2022-12-06 | 2024-06-13 | 株式会社都ローラー工業 | 有孔搬送ロール、シート材製造装置及びシート材加工装置 |
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Also Published As
Publication number | Publication date |
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CN102947207A (zh) | 2013-02-27 |
JP2011251803A (ja) | 2011-12-15 |
CA2798032A1 (en) | 2011-12-08 |
KR20130086940A (ko) | 2013-08-05 |
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