WO2011043438A1 - ポリイミドフィルムの製造方法およびテンター装置 - Google Patents
ポリイミドフィルムの製造方法およびテンター装置 Download PDFInfo
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- WO2011043438A1 WO2011043438A1 PCT/JP2010/067685 JP2010067685W WO2011043438A1 WO 2011043438 A1 WO2011043438 A1 WO 2011043438A1 JP 2010067685 W JP2010067685 W JP 2010067685W WO 2011043438 A1 WO2011043438 A1 WO 2011043438A1
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- Prior art keywords
- film
- tenter
- self
- bearing
- producing
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
- B29C55/16—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial simultaneously
- B29C55/165—Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/20—Edge clamps
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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
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2079/00—Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain, not provided for in groups B29K2061/00 - B29K2077/00, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2079/00—Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain, not provided for in groups B29K2061/00 - B29K2077/00, as moulding material
- B29K2079/08—PI, i.e. polyimides or derivatives thereof
Definitions
- the present invention relates to a method for producing a polyimide film, and more particularly to a method for producing a polyimide film in which heat treatment is performed using an improved tenter apparatus. Moreover, this invention relates to the tenter apparatus preferably used for manufacture of a polyimide film.
- Polyimide film is lightweight and excellent in various properties such as flexibility, film strength and heat resistance, so it is used as a flexible wiring board material, COF board material, etc. in various fields, especially in the electronic and electrical fields. Has been.
- a self-supporting film (also referred to as a gel film or a gel film) obtained by casting a solvent solution of a polyimide precursor such as polyamic acid on a support is used as a tenter.
- an apparatus also called thermal cure
- imidization chemical imidization, thermal imidization, or a reaction using both in combination is used.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2009-67042
- Patent Document 2 Japanese Patent Application Laid-Open No. 2003-268133
- Patent Document 3 Japanese Patent Application Laid-Open No. 2000-204178
- the imidization rate and solvent content of the self-supporting film are appropriately determined by the difference in raw materials such as the tetracarboxylic acid component and diamine component used, The final heat treatment (heat curing) conditions and the like are also appropriately selected. Finally, imidization is completed by heat treatment (heat curing), the solvent is also removed, and a polyimide film is manufactured.
- the film is heated in a state where both ends of the film are held by a tenter device in order to stably produce the film. If necessary, the width at both ends is gradually enlarged and stretched, or the width at both ends is reduced and contracted (stress relaxation).
- Fixing both ends of the self-supporting film is a method in which a large number of pins are inserted into the end of the self-supporting film (pin type tenter), and a method in which the end of the self-supporting film is held (clip type tenter, chuck) Etc.).
- Tenter devices are widely used not only for the production of polyimide films but also for other types of films.
- a conventional tenter device has a structure in which a tenter chain moves on a roller in a tenter rail, as described in JP-A-2001-146344 (Patent Document 4).
- FIG. 12 is a cross-sectional view of a tenter rail and a tenter chain on one side thereof.
- the tenter rail 140 includes support walls 141 that are spaced apart from each other, and a chain support roller 142 that is rotatably supported between the support walls 141.
- 150 is disposed between the support walls 141 and supported on the chain support roller 142.
- the tenter chain 150 is configured by alternately connecting inner links having a pair of inner plates 151a and 151b and outer links having a pair of outer plates 154a and 154b by connecting pins 155.
- the inner link further includes rollers 153a and 153b through which the connecting pin 155 is inserted through a bush (not shown). These rollers 153a and 153b are arranged in the axial direction of the connecting pin 155, and can rotate independently of the connecting pin 155, respectively.
- the tenter chain 150 is used in a posture in which the opposing direction of the outer plates 154a and 154b is set in the vertical direction. Therefore, the lower outer plate 154b is supported on the chain support roller 142 in use.
- the outer plate 154a located on the upper side when in use is bent in a crank shape and extends in the lateral direction, and a pin plate 164 having a plurality of piercing pins 165 is attached to the tip thereof.
- the edge of the film F is pierced and held by a piercing pin 165, and the film F is conveyed by moving the tenter chain 150 in this state.
- the tenter chain 150 has a transverse direction (direction of arrow A in the figure) when stretched using the expansion / contraction function of the tenter rail A very large tension is applied to the tenter chain 150, and the tenter chain 150 moves in a tilted state.
- the tenter chain 150 is tilted, the upper roller 153 a comes into contact with the inner support wall 141, and the lower roller 153 b comes into contact with the outer support wall 141.
- the rollers 153a and 153b can rotate in opposite directions, so that the rotation of the rollers is not hindered even if the tenter chain 150 is tilted.
- Patent Document 1 JP 2009-67042 A
- Patent Document 2 JP 2003-268133 JP
- Patent Document 3 JP 2000-204178 JP
- Patent Document 4 JP 2001-146344 A
- the tenter chain roller has two upper and lower stages, but the tenter chain does not change even if the roller has two upper and lower stages.
- the roller When the tenter chain is tilted, the roller locally contacts the support wall, so that a high contact pressure acts locally on the roller. Therefore, when the roller rotates, the roller and the member supporting the roller slide in a state where a large force is applied locally. As a result, the roller and the member supporting the roller are gradually worn by the rotation of the roller, and metal powder is generated due to this wear.
- the tenter chain is kept operating for a long period of time, the metal powder accumulates between the components constituting the tenter chain, and may hinder the rotational capability of the roller and the operation of the tenter chain. Moreover, when metal powder adheres to the film in process, the quality of the film is lowered, which is not preferable.
- lubricating oil in order to reduce friction between the parts constituting the tenter chain.
- the maximum temperature may reach 200 to 600 ° C.
- the lubricating oil evaporates and the evaporated lubricating oil adheres to the polyimide film. Therefore, it is difficult to use lubricating oil because it may cause deterioration of the quality of the polyimide film.
- An object of the present invention is to provide a method for producing a polyimide film, which can produce a polyimide film with high quality and efficiency by using an improved tenter device.
- the present invention relates to the following matters.
- the tenter device is A guide member disposed on both sides of the conveyance path of the self-supporting film; a pair of tenter chains each having a film holding mechanism that moves along the guide member and grips an edge of the self-supporting film;
- Have The tenter chain is rotatably supported around a shaft member extending in a direction parallel to the conveyance surface of the self-supporting film and perpendicular to the longitudinal direction of the guide member for movably supporting the tenter chain.
- the rolling bearing has an outer ring, an inner ring, a plurality of rolling elements disposed between the outer ring and the inner ring, and a spacer for separating the plurality of rolling elements in a circumferential direction, and the spacer 4.
- the film holding mechanism includes a pin plate and a plurality of piercing pins provided on the pin plate, and the film is gripped by piercing the plurality of piercing pins into the film.
- a method for producing a polyimide film having a second step of heat-treating while gripping and conveying both ends in the width direction of the self-supporting film with a tenter device The tenter device is A stationary guide member disposed on both sides of the film conveyance path, and a pair of movable tenter chains each having a film holding mechanism that moves along the guide member and grips an edge of the self-supporting film;
- a method for producing a polyimide film having a second step of heating while gripping and conveying both ends of the self-supporting film in the width direction with a tenter device The tenter device is A pair of movable guide members provided on both sides of the conveyance path of the self-supporting film and a film holding mechanism that moves along the guide member and grips the edge of the self-supporting film.
- the tenter chain In the second step, when tension is applied from the self-supporting film to the film holding mechanism, the self-supporting film is transported and heat-treated so that the tenter chain does not tilt.
- a method for producing a polyimide film comprising:
- a guide member disposed on both sides of the film conveyance path, and a pair of tenter chains each having a film holding mechanism that moves along the guide member and grips an edge of the film
- the tenter chain is a rotator that is rotatably supported around a shaft member that extends in a direction parallel to the film transport surface and perpendicular to the longitudinal direction of the guide member for movably supporting the tenter chain.
- the tenter device is characterized in that the shaft member is fixed directly or indirectly to the same member as the member to which the film holding mechanism is fixed.
- the rolling bearing has an outer ring, an inner ring, a plurality of rolling elements disposed between the outer ring and the inner ring, and a spacer for separating the plurality of rolling elements in a circumferential direction, and the spacer 24.
- the tenter device according to 22 above which has a plurality of the bearings, and at least one of the plurality of bearings is a sliding bearing.
- the inner link includes a pair of opposed inner plates, a bush connecting the pair of inner plates, and the second bearing supported on an outer periphery of the bush.
- 35 The tenter device according to 33 or 34, wherein the tenter chain has a plurality of second bearings, and at least one of the plurality of second bearings is a rolling bearing.
- the film holding mechanism includes a pin plate and a plurality of piercing pins provided on the pin plate, and the film is gripped by piercing the film with the piercing pins.
- the tenter device used in the present invention uses a tenter chain supported by a rotating body so as to be movable in the longitudinal direction of the self-supporting film, so that the driving friction is small and the film tension acts on the tenter chain. Even so, since the tenter chain has a structure that is difficult to tilt, the operation of each component constituting the tenter chain becomes smooth, and as a result, generation of metal powder due to wear of each component can be reduced. Furthermore, since the driving energy of the tenter chain can be reduced, energy saving can be achieved. Therefore, a high-quality polyimide film can be produced stably for a long time even in a high temperature environment.
- FIG. 4 is a cross-sectional view of the tenter chain shown in FIG. 2 taken along line IV-IV.
- FIG. 5 is a cross-sectional view taken along line VV of the tenter chain shown in FIG. It is sectional drawing cut
- FIG. 8 is a cross-sectional view similar to FIG. 4, showing a modification of the tenter device shown in FIG. 7.
- FIG. 8 is a cross-sectional view similar to FIG. 4 of another modification of the tenter device shown in FIG. 7. It is the top view which expanded a part of tenter chain of the tenter apparatus by further another form of this invention. It is a figure which shows the shaft member reduced in weight of the tenter apparatus by further another form of this invention. It is sectional drawing in the surface perpendicular
- the polyimide film manufacturing method of the present invention includes a first step of casting a solvent solution of a polyimide precursor on a support to form a self-supporting film, and gripping both ends of the self-supporting film in the width direction with a tenter device. And a second step of performing heat treatment while being conveyed.
- FIG. 1 an example of a tenter device that is used in a polyimide film manufacturing process and transports a self-supporting film with its edges (both ends in the width direction) gripped particularly in the heat treatment of the self-supporting film. It is shown.
- the self-supporting film is indicated by “film F”.
- the tenter device 1 has a pair of tenter chains 5 arranged on both sides of the film F conveyance path, and a pair of tenter rails 4 for guiding the movement of each tenter chain 5.
- Each tenter chain 5 is configured to be endless and meshes with the drive sprocket 2 and the driven sprocket 3.
- the tenter rail 4 has a pair of guide plates 41 that extend along the transport direction of the film F and are arranged in parallel to each other, and the tenter chain 5 can pass between the guide plates 41.
- each tenter chain 5 has a plurality of film holding mechanisms, and both edges of the film F are gripped by the film holding mechanisms provided in each tenter chain 5.
- the drive sprocket 2 is driven in a state where both edges of the film F are gripped, the tenter chain 5 moves along the tenter rail 4, whereby the film F is conveyed.
- a pair of tenter rails 4 are arranged in parallel so that the film F is conveyed in a state where the width thereof is constant.
- the tenter rails 4 can be arranged so that the distance between the tenter rails 4 becomes wider or narrower toward the downstream side in the film F conveyance direction.
- the pair of tenter rails 4 can be arranged by appropriately combining two or more of a portion having a constant interval, a gradually widening portion, and a gradually narrowing portion.
- the tenter chain 5 is an endless roller chain in which a plurality of inner links and a plurality of outer links are alternately connected.
- the inner link includes a pair of opposed inner plates 51a, 51b, two bushes 52 connecting them, and two rollers rotatably supported on the outer periphery of each bush 52 between the inner plates 51a, 51b. 53.
- the inner plates 51a and 51b are members formed so as to have a longitudinal direction, and the two bushings 52 are arranged at intervals in the longitudinal direction.
- the roller 53 is positioned between the pair of guide plates 41 adjacent to the guide plate 41 in the width direction of the film F, and the diameter of the roller 53 is set so as to be in contact with the guide plate 41. It is smaller than the interval between the guide plates 41 and larger than the width of the inner plates 51a and / or 51b.
- the outer link includes a pair of outer plates 54a and 54b arranged opposite to the outer side of the inner link, and two connecting pins that penetrate the inner plates 51a and 51b and the bushing 52 to connect the outer plates 54a and 54b to the inner link. 55.
- the outer plates 54a and 54b are members formed so as to have a longitudinal direction, and have a length capable of connecting two adjacent inner links.
- the connecting pin 55 is a threaded pin, and the connecting pin 55 is held by a washer 56 and a nut 57 so as not to come off from the outer plates 54a and 54b.
- the attach plate 63 is fixed to one outer plate 54a located on the upper side of the pair of outer plates 54a and 54b.
- the attach plate 63 is attached to one side of the outer plate 54a so as to extend to one side of the tenter chain 5 in the width direction perpendicular to the longitudinal direction of the outer plate 54a.
- a pin plate 64 provided with a plurality of piercing pins 65 for holding the film F is fixed to the tip of the attach plate 63.
- the pin plate 63 and the pin 64 constitute a film holding mechanism in the present invention.
- the attach plate 63 and the pin plate 64 may be integrated.
- the attachment plate 63 can have any shape as long as the pin plate 64 can be positioned on one side in the width direction of the outer plate 54a.
- the attachment plate 63 has a tip end portion to which the pin plate 64 is attached positioned between the outer plates 54 a and 54 b and extending in parallel with the outer plates 54 a and 54 b. It has a crank-like cross-sectional shape.
- the shaft member 60 is oriented so that its axial direction is parallel to the width direction of the outer plate 54a, in other words, parallel to the transport surface of the film F and the tenter rail 4 It is fixed in a direction extending in a direction perpendicular to the longitudinal direction.
- the shaft member 60 is a stepped member whose both end portions are smaller in diameter than the other parts, and a bearing 61 that receives a radial load of the shaft member 60 as a rotating body is provided in the small diameter part. It is arranged so as to be rotatable around the center.
- the bearings 61 attached to both ends of the shaft member 60 are designed so that the distance between the two bearings 61 is substantially equal to the distance between the guide members 41 so that they can be supported on the upper surfaces of the pair of guide plates 41.
- the axial position of the bearing 61 relative to the shaft member 60 is fixed by, for example, a C washer 62.
- the shaft member 60 is preferably partially removed by cutting or the like to be reduced in weight.
- any bearing such as a rolling bearing and a sliding bearing can be used as long as it receives a radial load.
- a rolling bearing is used as shown in FIG.
- the rolling bearing has an outer ring, an inner ring, a plurality of rolling elements (balls) disposed between the outer ring and the inner ring, and a spacer that separates the rolling elements in the circumferential direction.
- the inner ring is fixed to the shaft member 60, and the outer ring rotates with respect to the shaft member 60.
- the tenter chain 5 is supported on the tenter rail 4 by the bearing 61 so as to be movable in the longitudinal direction of the tenter chain 5.
- Each component constituting the tenter chain 5 described above can be made of stainless steel or the like, similar to a normal tenter chain.
- the tenter chain 5 is used in such a posture that the axial direction of the connecting pin 55 is oriented in the vertical direction and the outer plate 54a to which the attach plate 63 is fixed is the upper side.
- Each tenter chain 5 is endless so that the pin plate 64 faces outward, and meshes with the drive sprocket 2 and the driven sprocket 3.
- Each tenter chain 5 is supported on the upper surface of the guide plate 41 by a bearing 61 in the region where the tenter rail 4 is installed, and the roller 53 is positioned between the guide plates 41.
- the pin plates 64 face each other in the regions of the pair of tenter chains 5 facing each other. If the distance between the tenter chains 5 is appropriately set according to the width of the film F, both edges of the film F can be supported and held by piercing the film F with the piercing pins 65 of the opposing pin plate 64.
- the tenter chain 5 is moved, whereby the film F is conveyed. Further, the height of the grip surface of the film F can be controlled by adjusting the length and bending angle of the attach plate 63.
- the tenter chain 5 moves as the bearing 61 rotates on the guide plate 41.
- the inner link and the outer link are located between the guide plates 41, thereby restricting the lateral position of the tenter chain 5, so that the tenter chain 5 moves along the tenter rail 4.
- the upper surface of the guide plate 41 only needs to have a structure in contact with the bearing 61 so as not to hinder the rotation of the bearing 61.
- the upper surface of the guide plate 41 is preferably flat or smooth. Further, the upper surface of the guide plate 41 may be subjected to surface processing for reducing friction with the bearing 61.
- the tenter device 1 can be used for the stretching process of the film F using the expansion / contraction function of the tenter rail 4.
- the pin plate 64 that holds the film F is pulled in the direction indicated by the arrow A in FIG. Due to the tensile force of the film F, a moment that tilts the tenter chain 5 toward the other tenter chain 5 side acting on the tenter chain 5 acts.
- the upper outer plate is a flat plate, and the film F is applied to the flat outer plate. It is considered that the tensile force of
- the magnitude of the moment generated in the tenter chain by pulling the film F depends on the distance from the surface supported by the tenter rail of the tenter chain to the upper outer plate in the vertical direction. The moment increases. In other words, the greater the distance, the more the tenter chain tilts with less force.
- the contact surface between the lower outer plate 154b and the chain support roller 142 becomes the support surface BS1 to the tenter rail 140.
- the support surface BS1 coincides with the lower surface of the lower outer plate 154b that sandwiches the inner link having the pair of inner plates 151a and 151b together with the upper outer plate 154a, and the distance from the support surface BS1 to the upper outer plate 154a.
- D1 is larger than the distance between the outer plates 154a and 154b.
- the contact surface between the bearing 61 and the guide plate 41 becomes the support surface BS ⁇ b> 2 for the tenter rail 40.
- the support surface BS2 is a surface in contact with the outer peripheral surface of the bearing 61 supported by the shaft member 60 fixed to the upper outer plate 54a, and the distance D2 from the support surface BS2 to the upper outer plate 54a is a support surface axis.
- the distance can be much smaller than the distance D1 shown in FIG.
- the moment due to the tensile force of the film F can be made extremely small as compared with the conventional case, and as a result, the inclination of the tenter chain 5 due to the tension of the film F can be suppressed. it can. Suppressing the tilt of the tenter chain 5 allows the parts constituting the tenter chain 5 to operate smoothly without excessive force acting locally, so that metal powder and friction noise are generated due to the friction of each part. Since it becomes difficult to prevent the metal powder from adhering to the film, the film F having a stable quality can be manufactured. Further, since the tenter chain 5 uses a rotating body, the sliding frictional resistance is small, and energy required for operation is small, so that energy saving can be achieved. Since the rotating body is lubricated with a solid lubricant, the tenter device 1 can be operated without using lubricating oil.
- a rolling bearing is used as the bearing 61, whereby the tenter chain 5 can be moved more smoothly with a smaller driving force.
- the tenter chain 5 does not easily generate metal powder due to friction, but it does not mean that it does not occur at all. Some metal powder is generated by long-term operation of the tenter device 1. If this metal powder enters the gap between the outer and inner rings of the rolling bearing and accumulates during long-term operation, it may interfere with the operation of the rolling bearing. Furthermore, it is necessary to prevent the solid lubricant generated in the gap between the outer ring and the inner ring of the bearing from being scattered to the outside due to long-term operation. Therefore, a rolling bearing has a lid (shield) that covers the gap so that metal powder does not easily enter the gap between the outer ring and the inner ring, or the solid lubricant generated in the gap does not scatter to the outside. ).
- a lid shield
- the rolling bearing when the rolling bearing has a lid, the rolling bearing preferably has a labyrinth structure that prevents the space outside the lid from communicating linearly with the gap between the inner ring and the outer ring. Further, when attaching the rolling bearing to the shaft member 60, another washer or the like may be newly used between the outside of the shield and the C washer 62.
- the two bearings 61 are arranged on each outer link with a gap in the width direction of the outer plate 54a.
- the arrangement of the bearing 61 is an arrangement that can effectively counter the inclination of the tenter chain 5 due to the tension of the film F, and thereby the posture of the tenter chain 5 can be further stabilized.
- each outer link has two bearings 61, the existing equipment of the tenter rail 40 can be used as it is, so that the equipment change when the tenter apparatus shown in FIG. 12 is replaced with the tenter apparatus of this embodiment. Cost can be reduced.
- the bearing 61 is attached to a shaft member 60 fixed to the outer plate 54a, whereby the center of gravity of the tenter chain 5 is located below the support surface BS2. This also contributes to the stabilization of the posture of the tenter chain 5.
- the pin plate 64 is not directly attached to the outer plate 54a, but is attached to the outer plate 54a via the attach plate 63.
- Each plate 51a, 51b, 54a, 54b constituting the outer link and the inner link is designed to have sufficient mechanical strength to withstand a large tensile load received from the drive sprocket 2 during operation of the tenter chain 5.
- the plate thickness also increases to some extent.
- the tension of the film F is very small as compared with the tensile load received from the drive sprocket 2.
- the outer plate 54a can secure sufficient mechanical strength while the attachment plate 63 is used as the outer plate. It can be formed with a plate thickness thinner than 54a. Thereby, the weight reduction of the tenter chain 5 is achieved, which contributes to operating the tenter chain 5 with a smaller driving force.
- the pin plate 64 may be attached to the outer plate 54a through the attachment plate 63 in order to reduce the weight of the tenter chain 5.
- 54a may have a shape (for example, a crank shape) suitable for fixing the pin plate 64, and the pin plate 64 may be directly fixed to the tip portion thereof.
- the tenter device 1 of the present embodiment has a structure in which the tenter chain 5 supported on the tenter rail by the rotating body is extremely difficult to tilt. Therefore, the tenter device 1 can be operated smoothly without using lubricating oil, and the lubricating oil cannot be used. Suitable for use in high temperature environments.
- the bearing 61 is particularly important when the tenter device 1 is used in a high temperature environment.
- a rolling bearing is used as the bearing 61.
- a general rolling bearing is lubricated with a lubricant such as lubricating oil or grease. Since the lubricant evaporates under a high temperature environment, it is difficult to use such a lubricant.
- the rolling bearing has a structure lubricated with a solid lubricant.
- the solid lubricant can be contained, for example, in at least a part of the rolling element and / or the spacer for circumferentially separating the plurality of rolling elements in the gap between the outer ring and the inner ring.
- known solid lubricants such as natural or artificial graphite materials, boron nitride, tungsten disulfide and molybdenum disulfide can be used alone or in combination of two or more.
- a rolling bearing can be suitably used over a long period of time even in a high temperature environment.
- a sliding bearing can be used instead of a rolling bearing, or a rolling bearing and a sliding bearing can be used together.
- a sliding bearing is used as the bearing 61 of the tenter chain 5 used in a high temperature environment.
- the sliding bearing has a multilayer structure of two or more layers, and the innermost layer is composed of a layer containing a solid lubricant.
- a rotary body may be a roller. Even when a roller is used as the rotating body, in consideration of use in a high-temperature environment, it is preferable that the roller has a multilayer structure, and the innermost layer is formed of a layer containing a solid lubricant. Moreover, the roller may be directly supported by the shaft member 60, or may be supported via an appropriate bearing.
- the configuration is shown in which the pin plate 64 is attached to the upper outer plate 54 a via the attach plate 63 and the bearing 61 is supported via the shaft member 60.
- the attach plate 63 that supports the pin plate 64 and the shaft member 60 that supports the bearing 61 that is a rotating body may be fixed to the outer plate 54 b located on the lower side.
- the support of the tenter chain is not limited to the guide plate 41 but can be a flat plate.
- an appropriate guide plate 43 is disposed on the side of the roller 53 so that the tenter chain does not come off the predetermined conveyance path, or another roller 53b similar to the roller 53 is disposed below the shaft member 60. Or a combination of these.
- FIG. 6 shows an example in which all these configurations are combined, but the tenter chain may be configured not to include the roller 53b. In this case, the tenter chain is mounted on the guide plate 41 constituting the tenter rail. Instead, it can be supported on a flat plate.
- the piercing pin type holding mechanism is shown as the film F holding mechanism in the above-described form, a clip type or chuck type holding mechanism that holds the film F by gripping the edge of the film F is used instead. You can also.
- the structure in which the inner link and the outer link of the tenter chain 5 are combined is configured in the same manner as a normal roller chain.
- the roller 53 provided in the inner link has a function of reducing friction with the guide plate 41 during the movement of the tenter chain 5 in addition to the function of smoothly engaging the sprocket. Therefore, in order to further reduce the friction with the guide plate 41, the inner link of the tenter chain 5 may be provided with a second bearing 73 around the bush 52 as shown in FIG. .
- the tenter chain 5 can be moved with less frictional resistance.
- the tenter chain 5 can be operated with a smaller driving force, and metal wear powder Generation can be further reduced.
- the bearing 73 noise during operation of the tenter chain can be further reduced.
- Each inner link has two bushes 52, and the tenter chain has a plurality of inner links. Therefore, the entire tenter chain has a plurality of bushes 52 that can support the second bearing 73. Will exist.
- the above-mentioned effect by using the second bearing 73 is effectively exhibited by having the plurality of second bearings 73 in the entire tenter chain. Supporting is arbitrary.
- the second bearing 73 can also be used in the configuration shown in FIG. As shown in FIG. 6, when the tenter chain is guided by the guide plates 41 and 43 on the lower side and the upper side, respectively, at least one of the rollers 53 and 53b can be replaced with the second bearing.
- the roller 53b adjacent to the guide plate 41 is replaced with the second bearing, and when the tenter chain is guided only by the upper guide plate 43, the inner chain The roller 53 between the links is replaced with the second bearing.
- any bearing such as a rolling bearing and a sliding bearing can be used as in the bearing 61 used as the rotating body in the present invention.
- the tenter chain has a plurality of second bearings 73, they need not all be the same bearing, and at least one may be a rolling bearing or at least one may be a sliding bearing. Regardless of whether a rolling bearing or a sliding bearing is used, the second bearing 73 can have the same structure as the bearing 61 described above.
- the use of a bearing lubricated with a solid lubricant is particularly preferable for use in a high temperature environment. Lubrication with a solid lubricant can also be applied when the inner link includes the roller 53. Further, in order to enable the roller 53 or the bearing to rotate smoothly even when the tenter chain 5 is inclined, the roller 53 or the bearing is arranged in two upper and lower stages as in the conventional example of FIG. May be.
- the inner link of the tenter chain may include both the roller 53 and the second bearing 73 as shown in FIG.
- the roller 53 and the second bearing 73 are arranged along the axial direction of the bushing 52 that connects the inner plates 51a and 51b, and the roller 53 is rotatably supported on the outer periphery of the bushing 52 so that each can operate individually.
- the second bearing 73 is supported by an inner ring fixed to the outer periphery of the bushing 52. When the second bearing 73 is supported by the bush 52, a washer may be inserted between the inner plate 51 a and the second bearing 73.
- the tenter chain is engaged with the drive sprocket 2 and the driven sprocket 3 (see FIG. 1), and operates when the drive sprocket 2 is driven to rotate.
- the tenter chain is moved from the drive sprocket 2 during the operation. Repeatedly receives a large thrust load. Therefore, in the case of the configuration shown in FIG. 7, the second bearing 73 meshes with the drive sprocket 2, so that the second bearing 73 repeatedly receives the magnitude of the thrust load that the second bearing 73 receives from the drive sprocket 2.
- the service life may be shorter than usual.
- the roller 53 has a function of engaging with the drive sprocket 2 and the driven sprocket 3, and the second bearing 73
- the guide plate 41 can be brought into contact with the guide plate 41. This allows the tenter chain to operate with a smaller driving force, reduce the occurrence of metal wear, and reduce noise during operation while having sufficient durability for long-term use.
- the diameter of the roller 53 is preferably smaller than the diameter of the second bearing 73. By doing so, it is possible to prevent the roller 53 from coming into contact with the guide plate 41 when the tenter chain is pulled in a direction approaching the guide plate 41.
- the mutual positional relationship between the roller 53 and the second bearing 73 is arbitrary.
- the second bearing 73 may be disposed above the roller 53, and conversely, the second bearing 73 is a roller. It may be arranged below 53.
- the second bearing 73 is located above the roller 53 as shown in FIG. It is preferable to arrange
- two second bearings 73 can be arranged at intervals in the vertical direction, and a roller 53 can be arranged between the two second bearings 73.
- each outer link has a shaft member 60, and each shaft member 60 is provided with two bearings 61.
- the tenter chain 5 is supported in a balanced manner, and there is no hindrance to the transport of the film F. If there is no problem in the production of the film F, it is not necessary that all the outer links have the shaft members 60, and there may be a case where only one bearing 61 is provided for each shaft member 60.
- the tenter chain moving bearing 61 may be provided for each shaft member 60. It is arbitrary which end of the shaft member 60 the bearings 61 are arranged. All the bearings 61 are arranged on the pin plate 64 side, all the bearings 61 are arranged on the side opposite to the pin plate 64, It is possible to arrange the bearings 61 of the part on the pin plate 64 side and the rest on the opposite side so that they are arranged in an appropriate order.
- the plurality of bearings 61 are provided with a pin plate 64 in the moving direction of the tenter chain. It is preferable to arrange alternately on the side and the opposite side.
- the shaft member 60 provided with the two bearings 61 and the shaft member 60 provided with only one bearing 61 are combined by arrangement
- the arrangement of the shaft member 60 and the bearing 61 in the entire tenter chain 5 is such that the tenter chain 5 is supported in a well-balanced manner and does not interfere with the transport of the film F and does not cause problems in the production of the film F. It is optional if it exists.
- the second bearings 73 are attached only to some bushes 52 instead of all the bushes 52. It can also be attached. In this case, only the roller 53 is attached to the bush 52 to which the second bearing 73 is not attached.
- the tenter device preferably used in the method for producing a polyimide film of the present invention has been described above.
- the tenter device described above can be widely used not only for producing a polyimide film but also for producing other types of films.
- the method for producing a polyimide film of the present invention includes a first step of casting a solvent solution of a polyimide precursor on a support to form a self-supporting film, and both ends in the width direction of the self-supporting film.
- a second step of heating for the purpose of imidization and / or heat treatment while being held by a tenter device.
- the polyimide film can be produced by thermal imidization, chemical imidization, or a method in which thermal imidization and chemical imidization are used in combination.
- a known polyimide precursor such as polyamic acid obtained from a known acid component and a diamine component can be used.
- the finally produced polyimide layer may be composed of one layer or multiple layers having different components.
- at least one layer is preferably a layer composed of heat-resistant polyimide.
- a layer composed of thermocompression bonding polyimide is formed on one side or both sides of a layer composed of heat-resistant polyimide, a layer with excellent surface smoothness and a non-slip surface on the other side
- the layer is formed with an excellent layer
- examples where at least one layer is formed with a layer having excellent transparency or non-transparency, and the like are included.
- the self-supporting film may be composed of one layer, or may be composed of multiple layers having different polyimide precursor components.
- a combination comprising 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride (s-BPDA), p-phenylenediamine (PPD), and optionally 4,4-diaminodiphenyl ether (DADE).
- s-BPDA 4,4′-biphenyltetracarboxylic dianhydride
- PPD p-phenylenediamine
- DADE 4,4-diaminodiphenyl ether
- the PPD / DADE (molar ratio) is preferably 100/0 to 85/15.
- a combination comprising 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride and pyromellitic dianhydride (PMDA), p-phenylenediamine and optionally 4,4-diaminodiphenyl ether.
- PMDA pyromellitic dianhydride
- BPDA / PMDA is preferably 0/100 to 90/10.
- PPD and DADE are used in combination, PPD / (DADE is preferably 90/10 to 10/90, for example.
- DADE / PPD is preferably 90/10 to 10/90.
- DADE 4,4-diaminodiphenyl ether
- diamine component capable of obtaining a heat-resistant polyimide
- m-phenylenediamine, 2,4-toluenediamine, 3,3′-diaminodiphenyl sulfide in addition to the diamine component shown above, as long as the target properties are not impaired.
- thermocompression bonding polyimide (1) 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride, 2,3,3 ′, 4′-biphenyltetracarboxylic dianhydride, pyromellitic dianhydride, 3,3 ′ , 4,4′-benzophenonetetracarboxylic dianhydride, bis (3,4-dicarboxyphenyl) ether dianhydride, bis (3,4-dicarboxyphenyl) sulfide dianhydride, bis (3,4- Dicarboxyphenyl) sulfone dianhydride, bis (3,4-dicarboxyphenyl) methane dianhydride, 2,2-bis (3,4-dicarboxyphenyl) propane dianhydride and 1,4-hydroquinone dibenzoate -An acid component containing at least one component selected from acid dianhydrides such as 3,3 ', 4,4'-te
- the diamine component examples include 1,3-bis (4-aminophenoxy) benzene, 1,3-bis (3-aminophenoxy) benzene, 1,4-bis (4-aminophenoxy) benzene, 3,3 '-Diaminobenzophenone, 4,4'-bis (3-aminophenoxy) biphenyl, 4,4'-bis (4-aminophenoxy) biphenyl, bis [4- (3-aminophenoxy) phenyl] ketone, bis [4 -(4-aminophenoxy) phenyl] ketone, bis [4- (3-aminophenoxy) phenyl] sulfide, bis [4- (4-aminophenoxy) phenyl] sulfide, bis [4- (3-aminophenoxy) phenyl] Sulfone, bis [4- (4-aminophenoxy) benzene, 1,3-bis (3-aminophenoxy) benzene, 1,4
- An acid component containing seeds preferably an acid component containing at least 70 mol% or more, more preferably 80 mol% or more, more preferably 90 mol% or more of these acid components
- Examples of the diamine component include 1,3-bis (4-aminophenoxy) benzene, 1,3-bis (3-aminophenoxy) benzene 4,4′-bis (3-aminophenoxy) biphenyl, bis [4 -(3-aminophenoxy) phenyl] sulfone, bis [4- (3-aminophenoxy) phenyl] ether, 2,2-bis [4- (3-amin
- thermocompression bonding polyimide As a diamine component capable of obtaining a thermocompression bonding polyimide, in addition to the diamine component shown above, p-phenylenediamine, m-phenylenediamine, 2,4-toluenediamine, 3, as long as the characteristics of the present invention are not impaired.
- the synthesis of the polyimide precursor can be performed by a known method.
- an acid component such as an aromatic tetracarboxylic dianhydride and an diamine component are randomly polymerized or block polymerized in an organic solvent. Is achieved. May also be mixed with the reaction conditions was keep two or more polyimide precursors in which either of these two components is excessive, the respective polyimide precursor solution together.
- the polyimide precursor solution thus obtained can be used for the production of a self-supporting film as it is or after removing or adding a solvent if necessary.
- the polyimide precursor solution is heated to 150 to 250 ° C., or an imidizing agent is added and reacted at a temperature of 150 ° C. or less, particularly 15 to 50 ° C. to imide cyclization. Thereafter, the solvent is evaporated or precipitated in a poor solvent to obtain a powder. Thereafter, the powder can be dissolved in an organic solution to obtain an organic solvent solution of polyimide.
- organic solvent for the polyimide precursor solution examples include N-methyl-2-pyrrolidone, N, N-dimethylformamide, N, N-dimethylacetamide, N, N-diethylacetamide and the like. These organic solvents may be used alone or in combination of two or more.
- the polyimide precursor solution may contain an imidization catalyst, an organic phosphorus-containing compound, fine particles such as inorganic fine particles and organic fine particles, if necessary.
- the imidization catalyst examples include a substituted or unsubstituted nitrogen-containing heterocyclic compound, an N-oxide compound of the nitrogen-containing heterocyclic compound, a substituted or unsubstituted amino acid compound, an aromatic hydrocarbon compound having a hydroxyl group, or an aromatic heterocyclic compound.
- Cyclic compounds such as 1,2-dimethylimidazole, N-methylimidazole, N-benzyl-2-methylimidazole, 2-methylimidazole, 2-ethyl-4-methylimidazole, 5-methylbenzimidazole, etc.
- Benzimidazoles such as alkylimidazole and N-benzyl-2-methylimidazole, isoquinoline, 3,5-dimethylpyridine, 3,4-dimethylpyridine, 2,5-dimethylpyridine, 2,4-dimethylpyridine, 4-n- Substituted pyridines such as propylpyridine It can be used to apply.
- the amount of the imidization catalyst used is preferably about 0.01 to 2 times equivalent, particularly about 0.02 to 1 time equivalent to the amic acid unit of the polyamic acid.
- a chemical imidizing agent in which a dehydrating ring-closing agent and an organic amine are combined is usually contained in the polyimide precursor solution.
- the dehydrating ring-closing agent include dicyclohexylcarbodiimide, and acid anhydrides such as acetic anhydride, propionic anhydride, valeric anhydride, benzoic anhydride, trifluoroacetic acid dianhydride, and the organic amines include picoline, quinoline, and the like. , Isoquinoline, pyridine and the like, but are not limited thereto.
- Any polyimide precursor solution can be cast on the support, and the self-supporting film can be peeled from the support, and then a self-supporting film that can be stretched in at least one direction in the second step can be formed.
- the viscosity of the polyimide precursor solution such as the type and concentration of various additives added to the solution as required, such as the type of polymer, the degree of polymerization, and the concentration, can be appropriately set.
- the concentration of the polyimide precursor in the polyimide precursor solution is preferably 5 to 30% by mass, more preferably 10 to 25% by mass, and still more preferably 15 to 20% by mass.
- the solution viscosity of the polyimide precursor solution is preferably 100 to 10,000 poise, preferably 400 to 5000 poise, and more preferably 1000 to 3000 poise.
- a film-forming apparatus provided with a single-layer or multi-layer extrusion forming die is used, and one or more kinds of polyimide precursor solvents are used in the die.
- a part of or a large part of the organic solvent can be removed at a temperature at which the imidation of the polyimide precursor does not proceed completely while moving the support (endless belt, drum, etc.) inside the casting furnace. Heat to temperature and peel the self-supporting film from the support.
- a self-supporting film is first formed from a polyimide precursor solvent solution having a specific composition, and then a polyimide precursor solvent solution having a different composition is cast on the surface. It is also possible to produce a multilayer self-supporting film by heating in a casting furnace.
- a known material can be used as the support, but the surface is preferably made of a metal material such as a stainless steel material or a resin material such as polyethylene terephthalate, and a stainless steel belt, a stainless steel roll, or polyethylene terephthalate. Can be mentioned. It is preferable that a solvent thin film can be uniformly formed on the surface of the support.
- the surface of the support may be smooth, or grooves or embosses may be formed on the surface. In particular, it is preferably smooth.
- the heating temperature inside the casting furnace may be a temperature at which imidization of the polyimide precursor does not proceed completely and a temperature at which a part or most of the organic solvent can be removed.
- the temperature is preferably 100 to 200 ° C.
- the self-supporting film is semi-cured or dried before that.
- This semi-cured state or an earlier state means that it is in a self-supporting state by heating and / or chemical imidization.
- the self-supporting film may be any film that can be peeled off from the support, and the solvent content and imidization ratio may be in any range.
- a solution for example, a surface treatment agent, a polyimide precursor, polyimide, etc. may be included on one side or both sides of the self-supporting film, if necessary. Coating, spraying, dipping, etc. may be performed, and if necessary, the coating solvent may be mainly removed by means such as drying or extraction.
- various coupling agents such as silane coupling agents, borane coupling agents, aluminum coupling agents, aluminum chelating agents, titanate coupling agents, iron coupling agents, copper coupling agents, and chelating agents.
- An agent etc. can be mentioned.
- the solvent content and imidization rate of the self-supporting film can be appropriately set depending on the polyimide film intended for production.
- the solvent content means the content of volatilizable components including generated water in addition to the solvent in the precursor solution.
- the imidation rate is 1 to 80%, preferably 5 to 40%
- the solvent content is preferably 10 to 60% by mass, More preferably, it is 25 to 45% by mass.
- a polyimide film is produced from a polyimide precursor containing 80 mol% or more of pyromellitic dianhydride as a tetracarboxylic acid component and 80 mol% or more of p-phenylenediamine, preferably by thermal imidization
- the imidization rate is 50 to 100%, preferably 70 to 100%
- the solvent content of the polyimide precursor is preferably 10 to 80% by mass, more preferably 20 to 70% by mass. %.
- the self-supporting film produced in the first step is sent to the second step after applying a surface treatment agent if necessary.
- ⁇ Second step> the self-supporting film produced in the first step is heat-treated (heat cured) to obtain a target polyimide film.
- the tenter device described above is heated while gripping both ends in the width direction of the self-supporting film.
- the tenter device used in the second step is preferably the device described above.
- both ends of the self-supporting film are pierced and held by the pin 65.
- the tenter chain 5 holding the film moves in the heating zone at a predetermined temperature at a predetermined speed, so that the film is conveyed, during which the film is heat-treated and imidization proceeds, finally A polyimide film is obtained.
- the maximum temperature is in the range of 200 to 600 ° C., preferably in the range of 350 to 550 ° C., particularly preferably in the range of 300 to 500 ° C., for example, in about 0.05 to 5 hours. It is preferable to gradually heat.
- the solvent is sufficiently removed from the self-supporting film so that the content of volatile substances composed of an organic solvent and product water in the finally obtained polyimide film is 1% by weight or less, and the film is The imidation of the polymer which comprises is fully performed.
- the heating zone preferably has a temperature gradient, and may be divided into several blocks having different heating temperatures.
- the primary heat treatment is performed at a relatively low temperature of about 100 to 170 ° C. for about 0.5 to 30 minutes, and then the secondary heat treatment is performed at a temperature of 170 to 220 ° C. for about 0.5 to 30 minutes. Then, a third heat treatment is performed at a high temperature of 220 to 400 ° C. for about 0.5 to 30 minutes, and a fourth high temperature heat treatment is performed at a high temperature of 400 to 600 ° C. if necessary.
- primary heat treatment is performed at 80 to 240 ° C.
- heat treatment is performed at an intermediate heating temperature as necessary
- final heat treatment is performed at 350 to 600 ° C.
- the distance between the pair of tenter chains holding the film in the film width direction may be changed so as to expand or contract while the chain is moving.
- the film can be stretched by gradually increasing the distance between the pair of tenter chains on both sides in the width direction.
- the above heat treatment can be performed using various known heating devices such as a hot air furnace and an infrared heating furnace.
- Heat treatment such as initial heating temperature, intermediate heating temperature, and / or final heating temperature of the film is preferably performed in an inert gas atmosphere such as nitrogen or argon, or a heating gas atmosphere such as air.
- the polyimide film is produced in a long shape by the above production method, in general, a portion excluding both ends of the self-supporting film held in the width direction by the tenter device is cut into a roll shape. Stored and provided for subsequent processing.
- the thickness of the polyimide film is not particularly limited as long as it is appropriately selected.
- the thickness is 150 ⁇ m or less, preferably 5 to 120 ⁇ m, more preferably 6 to 50 ⁇ m, still more preferably 7 to 40 ⁇ m, and particularly preferably 8. It can be ⁇ 35 ⁇ m.
- a method for producing a polyimide film having a second step of heating while gripping and conveying both ends of the self-supporting film in the width direction with a tenter device The tenter device is A stationary guide member disposed on both sides of the film conveyance path, and a pair of movable tenter chains each having a film holding mechanism that moves along the guide member and grips an edge of the self-supporting film;
- the self-supporting film is formed so that the occurrence of sliding friction (sliding friction) is remarkably reduced between the stationary guide member and the movable tenter chain, preferably substantially not. It is related with the manufacturing method of the polyimide film characterized by being conveyed and heat-processed.
- the tenter device used As the tenter device used, the above-described devices (devices shown in FIGS. 2 to 11) are preferably used. Details of the self-supporting film in the first step and the heat treatment conditions in the second step are as described above.
- a different aspect of the present invention includes a first step in which a solvent solution of a polyimide precursor is cast on a support to form a self-supporting film; A method for producing a polyimide film having a second step of heating while gripping and conveying both ends of the self-supporting film in the width direction with a tenter device,
- the tenter device is A pair of movable guide members provided on both sides of the conveyance path of the self-supporting film and a film holding mechanism that moves along the guide member and grips the edge of the self-supporting film.
- With a tenter chain In the second step, when tension is applied from the self-supporting film to the film holding mechanism, the self-supporting film is transported and heat-treated so that the tenter chain does not tilt.
- the present invention relates to a method for producing a polyimide film.
- the film quality is stable because the distance at which the film is gripped on both sides is constant and stable.
- the occurrence of sliding friction between the stationary member and the movable member is also reduced, so there is almost no generation of metal powder that causes deterioration of the quality of the polyimide film, and high quality polyimide film is stable without long-term maintenance.
- the driving energy of the tenter chain is reduced, which is beneficial for reducing the manufacturing cost.
- the tenter device used As the tenter device used, the above-described devices (devices shown in FIGS. 2 to 11) are preferably used. Details of the self-supporting film in the first step and the heat treatment conditions in the second step are as described above.
- Example 1 A conventional tenter chain (Comparative Example 1) and a tenter chain of the present invention (Examples 1 and 2) were used at the same speed, and the load factor of the drive motor of the chain was measured.
- Table 1 shows relative values with the measured value of the conventional tenter chain as 100.
- Example 1 [Create self-supporting film]
- a DMAc (dimethylacetamide) solution (polymer concentration: 18% by mass, solution viscosity (30 ° C.): 1800 poise) in which approximately equimolar amounts of s-BPDA and PPD are mixed is cast on an endless belt-like stainless steel support.
- the self-supporting film having a solvent content of 37.0% by mass and an imidization ratio of 15.3 mol% was prepared by adjusting the temperature and heating time from 120 ° C to 140 ° C and drying.
- Example 2 A polyimide film was obtained in the same manner as in Example 1 except that the tenter device shown in FIG. 8 was used.
- Table 1 shows the values of the tenter chain drive volume, the tenter chain drive energy, the motor load factor, and the amount of metal wear powder.
- Example 1 A polyimide film was obtained in the same manner as in Example 1 except that the tenter device shown in FIG. 12 was used.
- Table 1 shows the values of the tenter chain drive volume, the tenter chain drive energy, the motor load factor, and the amount of metal wear powder.
- Example 1 As shown in Table 1, in Comparative Example 1, the level of driving sound, driving energy, and amount of metal wear powder was high with remarkable metal friction during driving of the tenter chain, but in Examples 1 and 2, It can be seen that these values are greatly reduced. Moreover, when Example 1 and Example 2 are compared, the result of Example 2 was more excellent in all evaluation items.
- the polyimide film is manufactured using the tenter chain of the present invention, it is possible to significantly reduce noise, driving energy, and amount of metal wear powder.
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Abstract
Description
特許文献2:特開2003-268133号公報
特許文献3:特開2000-204178号公報
特許文献4:特開2001-146344号公報
前記自己支持性フィルムの幅方向の両端をテンター装置で把持し長手方向に搬送しながら、加熱処理する第2工程とを有するポリイミドフィルムの製造方法であって、
前記テンター装置は、
前記自己支持性フィルムの搬送路の両側に配置されたガイド部材と、前記ガイド部材に沿って移動し、それぞれ前記自己支持性フィルムの縁部を把持するフィルム保持機構を備えた一対のテンターチェーンとを有し、
前記テンターチェーンは、前記テンターチェーンを移動可能に支持させるための、前記自己支持性フィルムの搬送面に平行かつ前記ガイド部材の長手方向と直角な方向に延びる軸部材を中心に回転自在に支持された回転体を有し、前記軸部材は、前記フィルム保持機構が固定されている部材と同じ部材に直接または間接的に固定されていることを特徴とするポリイミドフィルムの製造方法。
前記自己支持性フィルムの幅方向の両端をテンター装置で把持し搬送しながら、加熱処理する第2工程とを有するポリイミドフィルムの製造方法であって、
前記テンター装置は、
フィルムの搬送路の両側に配置された不動のガイド部材と、前記ガイド部材に沿って移動し、それぞれ前記自己支持性フィルムの縁部を把持するフィルム保持機構を備えた一対の可動のテンターチェーンとを有し、
前記第2工程において、前記不動のガイド部材と前記可動のテンターチェーンの間にずり摩擦が実質的に生じないようにして、前記自己支持性フィルムが搬送され、加熱処理されることを特徴とするポリイミドフィルムの製造方法。
前記自己支持性フィルムの幅方向の両端をテンター装置で把持し搬送しながら、加熱する第2工程とを有するポリイミドフィルムの製造方法であって、
前記テンター装置は、
前記自己支持性フィルムの搬送路の両側に配置された不動のガイド部材と、前記ガイド部材に沿って移動し、それぞれ前記自己支持性フィルムの縁部を把持するフィルム保持機構を備えた一対の可動のテンターチェーンとを有し、
前記第2工程において、前記フィルム保持機構に対して前記自己支持性フィルムから張力が加えられたときに、前記テンターチェーンが傾かないようにして、前記自己支持性フィルムが搬送され、加熱処理されることを特徴とするポリイミドフィルムの製造方法。
前記テンターチェーンは、前記テンターチェーンを移動可能に支持させるための、前記フィルムの搬送面に平行かつ前記ガイド部材の長手方向と直角な方向に延びる軸部材を中心に回転自在に支持された回転体を有し、前記軸部材は、前記フィルム保持機構が固定されている部材と同じ部材に直接または間接的に固定されていることを特徴とするテンター装置。
第1工程において自己支持性フィルムを形成するためのポリイミド前駆体としては、公知の酸成分とジアミン成分とから得られるポリアミック酸などの公知のポリイミド前駆体を用いることができる。
(1)3,3’,4,4’-ビフェニルテトラカルボン酸二無水物、ピロメリット酸二無水物及び1,4-ヒドロキノンジベンゾエート-3,3’,4,4’-テトラカルボン酸二無水物より選ばれる成分を少なくとも1種含む酸成分、好ましくはこれらの酸成分を少なくとも70モル%以上、さらに好ましくは80モル%以上、より好ましくは90モル%以上含む酸成分と、
(2)ジアミン成分としてp-フェニレンジアミン、4,4’-ジアミノジフェニルエーテル、3,4’-ジアミノジフェニルエーテル、m-トリジン及び4,4’-ジアミノベンズアニリドより選ばれる成分を少なくとも1種含むジアミン、好ましくはこれらのジアミン成分を少なくとも70モル%以上、さらに好ましくは80モル%以上、より好ましくは90モル%以上含むジアミン成分とから得られるポリイミドなどを用いることができる。
1)3,3’,4,4’-ビフェニルテトラカルボン酸二無水物(s-BPDA)と、p-フェニレンジアミン(PPD)と、必要により4,4-ジアミノジフェニルエーテル(DADE)を含む組み合わせ。この場合、PPD/DADE(モル比)は100/0~85/15であることが好ましい。
2)3,3’,4,4’-ビフェニルテトラカルボン酸二無水物及びピロメリット酸二無水物(PMDA)と、p-フェニレンジアミンと必要により4,4-ジアミノジフェニルエーテルを含む組み合わせ。この場合、BPDA/PMDAは0/100~90/10であることが好ましい。PPDとDADEを併用する場合、PPD/(DADEは、例えば90/10~10/90が好ましい。
3)ピロメリット酸二無水物と、p-フェニレンジアミン及び4,4-ジアミノジフェニルエーテルの組み合わせ。この場合、DADE/PPDは90/10~10/90であることが好ましい。
4)3,3’,4,4’-ビフェニルテトラカルボン酸二無水物とp-フェニレンジアミンとを主成分(合計100モル%中の50モル%以上)として得られるものを挙げることができる。
(1)3,3’,4,4’-ビフェニルテトラカルボン酸二無水物、2,3,3’,4’-ビフェニルテトラカルボン酸二無水物、ピロメリット酸二無水物、3,3’,4,4’-ベンゾフェノンテトラカルボン酸二無水物、ビス(3,4-ジカルボキシフェニル)エーテル二無水物、ビス(3,4-ジカルボキシフェニル)スルフィド二無水物、ビス(3,4-ジカルボキシフェニル)スルホン二無水物、ビス(3,4-ジカルボキシフェニル)メタン二無水物、2,2-ビス(3,4-ジカルボキシフェニル)プロパン二無水物及び1,4-ヒドロキノンジベンゾエート-3,3’,4,4’-テトラカルボン酸二無水物などの酸二無水物より選ばれる成分を少なくとも1種含む酸成分、好ましくはこれらの酸成分を少なくとも70モル%以上、さらに好ましくは80モル%以上、より好ましくは90モル%以上含む酸成分と、
(2)ジアミン成分としては、1,3-ビス(4-アミノフェノキシ)ベンゼン、1,3-ビス(3-アミノフェノキシ)ベンゼン、1,4-ビス(4-アミノフェノキシ)ベンゼン、3,3’-ジアミノベンゾフェノン、4,4’-ビス(3-アミノフェノキシ)ビフェニル、4,4’-ビス(4-アミノフェノキシ)ビフェニル、ビス[4-(3-アミノフェノキシ)フェニル]ケトン、ビス[4-(4-アミノフェノキシ)フェニル]ケトン、ビス[4-(3-アミノフェノキシ)フェニル]スルフィド、ビス[4-(4-アミノフェノキシ)フェニル]スルフィド、ビス[4-(3-アミノフェノキシ)フェニル]スルホン、ビス[4-(4-アミノフェノキシ)フェニル]スルホン、ビス[4-(3-アミノフェノキシ)フェニル]エーテル、ビス[4-(4-アミノフェノキシ)フェニル]エーテル、2,2-ビス[4-(3-アミノフェノキシ)フェニル]プロパン、2,2-ビス[4-(4-アミノフェノキシ)フェニル]プロパンなどのジアミンより選ばれる成分を少なくとも1種含むジアミン、好ましくはこれらのジアミン成分を少なくとも70モル%以上、さらに好ましくは80モル%以上、より好ましくは90モル%以上含むジアミン成分とから得られるポリイミドなどを用いることができる。
(1)3,3’,4,4’-ビフェニルテトラカルボン酸二無水物及び2,3,3’,4’-ビフェニルテトラカルボン酸二無水物の酸二無水物より選ばれる成分を少なくとも1種含む酸成分、好ましくはこれらの酸成分を少なくとも70モル%以上、さらに好ましくは80モル%以上、より好ましくは90モル%以上含む酸成分と、
(2)ジアミン成分としては、1,3-ビス(4-アミノフェノキシ)ベンゼン、1,3-ビス(3-アミノフェノキシ)ベンゼン4,4’-ビス(3-アミノフェノキシ)ビフェニル、ビス[4-(3-アミノフェノキシ)フェニル]スルホン、ビス[4-(3-アミノフェノキシ)フェニル]エーテル、2,2-ビス[4-(3-アミノフェノキシ)フェニル]プロパン、2,2-ビス[4-(4-アミノフェノキシ)フェニル]プロパンなどのジアミンより選ばれる成分を少なくとも1種含むジアミン、好ましくはこれらのジアミン成分を少なくとも70モル%以上、さらに好ましくは80モル%以上、より好ましくは90モル%以上含むジアミン成分とから得られるポリイミドなどを用いることができる。
第2工程においては、第1工程で製造した自己支持性フィルムを、加熱処理(熱キュア)して目的のポリイミドフィルムとする。本発明では、加熱処理の際に前述のテンター装置により、自己支持性フィルムの幅方向の両端を把持しながら加熱する。
ポリイミド前駆体の溶媒溶液を支持体上にキャストし、自己支持性フィルムとする第1工程と、
前記自己支持性フィルムの幅方向の両端をテンター装置で把持し搬送しながら、加熱する第2工程とを有するポリイミドフィルムの製造方法であって、
前記テンター装置は、
フィルムの搬送路の両側に配置された不動のガイド部材と、前記ガイド部材に沿って移動し、それぞれ前記自己支持性フィルムの縁部を把持するフィルム保持機構を備えた一対の可動のテンターチェーンとを有し、
前記第2工程において、前記不動のガイド部材と前記可動のテンターチェーンの間で、ずり摩擦(すべり摩擦)の発生が著しく低減され、好ましくは実質的に生じないようにして、前記自己支持性フィルムが搬送され、加熱処理されることを特徴とするポリイミドフィルムの製造方法に関する。
前記自己支持性フィルムの幅方向の両端をテンター装置で把持し搬送しながら、加熱する第2工程とを有するポリイミドフィルムの製造方法であって、
前記テンター装置は、
前記自己支持性フィルムの搬送路の両側に配置された不動のガイド部材と、前記ガイド部材に沿って移動し、それぞれ前記自己支持性フィルムの縁部を把持するフィルム保持機構を備えた一対の可動のテンターチェーンとを有し、
前記第2工程において、前記フィルム保持機構に対して前記自己支持性フィルムから張力が加えられたときに、前記テンターチェーンが傾かないようにして、前記自己支持性フィルムが搬送され、加熱処理されることを特徴とするポリイミドフィルムの製造方法に関する。
従来のテンターチェーン(比較例1)と、図2~5に示した本発明のテンターチェーン(実施例1)と、図8に示した本発明のテンターチェーン(実施例2)とを同じ速度で使用して、騒音計(リオン製NL-20)を用い、テンターチェーン摺動部の前後左右の8ケ所で音量を測定し、それらの平均値で示した。
従来のテンターチェーン(比較例1)と本発明のテンターチェーン(実施例1、2)とを同じ速度で使用して、チェーンの駆動モーターの電力値を測定した。表1には、従来のテンターチェーンの測定値を100とした相対値を示す。
従来のテンターチェーン(比較例1)と本発明のテンターチェーン(実施例1、2)とを同じ速度で使用して、チェーンの駆動モーターの負荷率を測定した。表1には、従来のテンターチェーンの測定値を100とした相対値を示す。
延伸、加熱工程におけるテンターレールの下部にプレートをネジ止めして設置し、従来のテンターチェーン(比較例1)と本発明のテンターチェーン(実施例1、2)とを同じ速度で使用して、70時間製膜を続けた後に、プレートを取り外し、プレート上に堆積した金属磨耗粉重量を測定した。得られた金属磨耗粉(黒色)を蛍光X線で分析したところ、鉄、ニッケル、クロムが主成分として検出され、テンターチェーン摺動部に使用されているステンレス鋼の磨耗粉であることが確認された。表1には、従来のテンターチェーンの測定値を100とした相対値を示す。
[自己支持性フィルムの作成]
s-BPDAとPPDを概略等モル混合したDMAc(ジメチルアセトアミド)溶液(ポリマー濃度:18質量%、溶液粘度(30℃):1800ポイズ)をエンドレスベルト状のステンレス製の支持体上に流延し、120℃から140℃で温度、加熱時間を調整して乾燥し、溶媒含量が37.0質量%、イミド化率が15.3モル%の自己支持性フィルムを作成した。
図2~5に示したテンター装置を使用し、自己支持性フィルムの幅方向の端部をピンにより把持し、105℃×1分、150℃×1分、280℃×1分で初期加熱処理をするとともに、幅方向に最大で1.1倍の延伸を行った。その後、延伸することなく最終加熱温度として、350℃×2分でイミド化を完結させて、ポリイミドフィルムを得た。その際のテンターチェーンの駆動音量、テンターチェーンの駆動エネルギー、モーター負荷率および金属磨耗粉量の値を表1に示した。
図8に示したテンター装置を用いた以外は、実施例1と同様な方法でポリイミドフィルムを得た。その時のテンターチェーンの駆動音量、テンターチェーンの駆動エネルギー、モーター負荷率および金属磨耗粉量の値を表1に示した。
図12に示したテンター装置を用いた以外は、実施例1と同様な方法でポリイミドフィルムを得た。その時のテンターチェーンの駆動音量、テンターチェーンの駆動エネルギー、モーター負荷率および金属磨耗粉量の値を表1に示した。
2 駆動スプロケット
3 従動スプロケット
4 テンターレール
5 テンターチェーン
51a、51b 内プレート
52 ブシュ
53 ローラ
54a、54b 外プレート
55 連結ピン
60 軸部材
61 軸受
63 アタッチプレート
64 ピンプレート
65 突き刺しピン
Claims (38)
- ポリイミド前駆体の溶媒溶液を支持体上にキャストし、自己支持性フィルムとする第1工程と、
前記自己支持性フィルムの幅方向の両端をテンター装置で把持し長手方向に搬送しながら、加熱処理する第2工程とを有するポリイミドフィルムの製造方法であって、
前記テンター装置は、
前記自己支持性フィルムの搬送路の両側に配置されたガイド部材と、前記ガイド部材に沿って移動し、それぞれ前記自己支持性フィルムの縁部を把持するフィルム保持機構を備えた一対のテンターチェーンとを有し、
前記テンターチェーンは、前記テンターチェーンを移動可能に支持させるための、前記自己支持性フィルムの搬送面に平行かつ前記ガイド部材の長手方向と直角な方向に延びる軸部材を中心に回転自在に支持された回転体を有し、前記軸部材は、前記フィルム保持機構が固定されている部材と同じ部材に直接または間接的に固定されていることを特徴とするポリイミドフィルムの製造方法。 - 複数の前記回転体を有し、前記複数の回転体の少なくとも1つが軸受である請求項1に記載のポリイミドフィルムの製造方法。
- 複数の前記軸受を有し、前記複数の軸受の少なくとも1つが転がり軸受である請求項2に記載のポリイミドフィルムの製造方法。
- 前記転がり軸受は、外輪と、内輪と、前記外輪と内輪との間に配された複数の転動体と、前記複数の転動体を円周方向に離間させるためのスペーサとを有し、前記スペーサおよび/または転動体の少なくとも一部は固体潤滑剤を含有している請求項3に記載のポリイミドフィルムの製造方法。
- 複数の前記軸受を有し、前記複数の軸受の少なくとも1つが滑り軸受である請求項2に記載のポリイミドフィルムの製造方法。
- 前記滑り軸受は多層構造であり、その最内層が固体潤滑剤を含有している請求項5に記載のポリイミドフィルムの製造方法。
- 前記回転体はローラである請求項1に記載のポリイミドフィルムの製造方法。
- 前記ローラは多層構造であり、その最内層が固体潤滑剤を含有している請求項7に記載のポリイミドフィルムの製造方法。
- 前記テンターチェーンは、複数の内リンクと複数の外リンクとを交互に連結して構成されている請求項1から8のいずれか1項に記載のポリイミドフィルムの製造方法。
- 前記軸部材および前記フィルム保持機構は、前記外リンクを構成する部品の一つである外プレートに固定されている請求項1から9のいずれか1項に記載のポリイミドフィルムの製造方法。
- 前記フィルム保持機構は、アタッチプレートを介して前記外プレートに取り付けられている請求項10に記載のポリイミドフィルムの製造方法。
- 前記アタッチプレートの板厚は、前記外プレートの板厚よりも薄い請求項11に記載のポリイミドフィルムの製造方法。
- 前記テンターチェーンは、前記自己支持性フィルムの幅方向で前記ガイド部材に隣接して回転自在に支持されたローラおよび第2軸受の少なくとも一方を有する請求項9に記載のポリイミドフィルムの製造方法。
- 前記内リンクは、対向配置された一対の内プレートと、前記一対の内プレートを連結するブシュと、を有し、前記第2軸受が前記ブシュの外周に支持されている請求項13に記載のポリイミドフィルムの製造方法。
- 前記テンターチェーンは複数の前記第2軸受を有し、前記複数の第2軸受の少なくとも一つが転がり軸受である請求項13または14に記載のポリイミドフィルムの製造方法。
- 前記テンターチェーンは複数の前記第2軸受を有し、前記複数の第2軸受の少なくとも一つが滑り軸受である請求項13または14に記載のポリイミドフィルムの製造方法。
- 前記第2軸受は固体潤滑剤により潤滑される軸受である請求項15または16に記載のポリイミドフィルムの製造方法。
- 前記フィルム保持機構は、ピンプレートと、前記ピンプレートに設けられた複数の突き刺しピンとを有し、前記複数の突き刺しピンをフィルムに突き刺すことによってフィルムが把持される請求項1から17のいずれか1項に記載のポリイミドフィルムの製造方法。
- ポリイミド前駆体の溶媒溶液を支持体上にキャストし、自己支持性フィルムとする第1工程と、
前記自己支持性フィルムの幅方向の両端をテンター装置で把持し搬送しながら、加熱処理する第2工程とを有するポリイミドフィルムの製造方法であって、
前記テンター装置は、
フィルムの搬送路の両側に配置された不動のガイド部材と、前記ガイド部材に沿って移動し、それぞれ前記自己支持性フィルムの縁部を把持するフィルム保持機構を備えた一対の可動のテンターチェーンとを有し、
前記第2工程において、前記不動のガイド部材と前記可動のテンターチェーンの間にずり摩擦が実質的に生じないようにして、前記自己支持性フィルムが搬送され、加熱処理されることを特徴とするポリイミドフィルムの製造方法。 - ポリイミド前駆体の溶媒溶液を支持体上にキャストし、自己支持性フィルムとする第1工程と、
前記自己支持性フィルムの幅方向の両端をテンター装置で把持し搬送しながら、加熱する第2工程とを有するポリイミドフィルムの製造方法であって、
前記テンター装置は、
前記自己支持性フィルムの搬送路の両側に配置された不動のガイド部材と、前記ガイド部材に沿って移動し、それぞれ前記自己支持性フィルムの縁部を把持するフィルム保持機構を備えた一対の可動のテンターチェーンとを有し、
前記第2工程において、前記フィルム保持機構に対して前記自己支持性フィルムから張力が加えられたときに、前記テンターチェーンが傾かないようにして、前記自己支持性フィルムが搬送され、加熱処理されることを特徴とするポリイミドフィルムの製造方法。 - フィルムの搬送路の両側に配置されたガイド部材と、前記ガイド部材に沿って移動し、それぞれ前記フィルムの縁部を把持するフィルム保持機構を備えた一対のテンターチェーンとを有し、
前記テンターチェーンは、前記テンターチェーンを移動可能に支持させるための、前記フィルムの搬送面に平行かつ前記ガイド部材の長手方向と直角な方向に延びる軸部材を中心に回転自在に支持された回転体を有し、前記軸部材は、前記フィルム保持機構が固定されている部材と同じ部材に直接または間接的に固定されていることを特徴とするテンター装置。 - 複数の前記回転体を有し、前記複数の回転体の少なくとも1つが軸受である請求項21に記載のテンター装置。
- 複数の前記軸受を有し、前記複数の軸受の少なくとも1つが転がり軸受である請求項22に記載のテンター装置。
- 前記転がり軸受は、外輪と、内輪と、前記外輪と内輪との間に配された複数の転動体と、前記複数の転動体を円周方向に離間させるためのスペーサとを有し、前記スペーサおよび/または転動体の少なくとも一部は固体潤滑剤を含有している請求項23に記載のテンター装置。
- 複数の前記軸受を有し、前記複数の軸受の少なくとも1つが滑り軸受である請求項22に記載のテンター装置。
- 前記滑り軸受は多層構造であり、その最内層が固体潤滑剤を含有している請求項25に記載のテンター装置。
- 前記回転体はローラである請求項21に記載のテンター装置。
- 前記ローラは多層構造であり、その最内層が固体潤滑剤を含有している請求項27に記載のテンター装置。
- 前記テンターチェーンは、複数の内リンクと複数の外リンクとを交互に連結して構成されている請求項1から28のいずれか1項に記載のテンター装置。
- 前記軸部材および前記フィルム保持機構は、前記外リンクを構成する部品の一つである外プレートに固定されている請求項29に記載のテンター装置。
- 前記フィルム保持機構は、アタッチプレートを介して前記外プレートに取り付けられている請求項30に記載のテンター装置。
- 前記アタッチプレートの板厚は、前記外プレートの板厚よりも薄い請求項31に記載のテンター装置。
- 前記テンターチェーンは、前記自己支持性フィルムの幅方向で前記ガイド部材に隣接して回転自在に支持されたローラおよび前記第2軸受の少なくとも一方を有する請求項29に記載のテンター装置。
- 前記内リンクは、対向配置された一対の内プレートと、前記一対の内プレートを連結するブシュと、を有し、前記第2軸受が前記ブシュの外周に支持されている請求項33に記載のテンター装置。
- 前記テンターチェーンは複数の前記第2軸受を有し、前記複数の第2軸受の少なくとも一つが転がり軸受である請求項33または34に記載のテンター装置。
- 前記テンターチェーンは複数の前記第2軸受を有し、前記複数の第2軸受の少なくとも一つが滑り軸受である請求項33または34に記載のテンター装置。
- 前記第2軸受は固体潤滑剤により潤滑される軸受である請求項35または36に記載のテンター装置。
- 前記フィルム保持機構は、ピンプレートと、前記ピンプレートに設けられた複数の突き刺しピンとを有し、前記複数の突き刺しピンをフィルムに突き刺すことによってフィルムが把持される請求項21から37のいずれか1項に記載のテンター装置。
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US13/500,282 US9352498B2 (en) | 2009-10-09 | 2010-10-07 | Method of manufacturing polyimide film and tenter apparatus |
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CN201080056275.7A CN102648081B (zh) | 2009-10-09 | 2010-10-07 | 制造聚酰亚胺膜的方法和拉幅机装置 |
KR1020127010699A KR101596749B1 (ko) | 2009-10-09 | 2010-10-07 | 폴리이미드 필름의 제조방법 및 텐터 장치 |
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CN103542037A (zh) * | 2012-07-16 | 2014-01-29 | 宁波康润机械科技有限公司 | 齿轮同步转动装置 |
US20140058060A1 (en) * | 2011-03-25 | 2014-02-27 | Takeshi Uekido | Polyimide film production method, polyimide film production apparatus, and polyimide film |
JP2014070725A (ja) * | 2012-10-02 | 2014-04-21 | Ube Ind Ltd | フィルムの搬送装置 |
WO2015033755A1 (ja) * | 2013-09-04 | 2015-03-12 | 宇部興産株式会社 | フィルム保持具およびテンター装置 |
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CN115215137B (zh) * | 2022-09-20 | 2022-12-27 | 兴晔新材料(南通)有限公司 | 一种纺织用纺织布传送装置及其使用方法 |
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US20120193829A1 (en) | 2012-08-02 |
CN102648081A (zh) | 2012-08-22 |
KR20120089304A (ko) | 2012-08-09 |
CN102648081B (zh) | 2014-12-10 |
TW201130637A (en) | 2011-09-16 |
JPWO2011043438A1 (ja) | 2013-03-04 |
KR101596749B1 (ko) | 2016-03-07 |
TWI513568B (zh) | 2015-12-21 |
US9352498B2 (en) | 2016-05-31 |
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