CN102205635A - Film stretching device and method - Google Patents
Film stretching device and method Download PDFInfo
- Publication number
- CN102205635A CN102205635A CN201110066303XA CN201110066303A CN102205635A CN 102205635 A CN102205635 A CN 102205635A CN 201110066303X A CN201110066303X A CN 201110066303XA CN 201110066303 A CN201110066303 A CN 201110066303A CN 102205635 A CN102205635 A CN 102205635A
- Authority
- CN
- China
- Prior art keywords
- film
- clip
- bend
- handle part
- support seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention provides a film stretching device and a method thereof. A stretching device (2) comprises clamps (5), and a first guide rail and a second guide rail (11,12) for guiding the clamps (5). Each guide rail (11,12) comprises a first straight line part (11a, 12a), a first bent part (11b,12b), an inclined part (11c,12c), a second bent part (11d, 12d) and a second straight line part (11e,12e). The clamps (5) are equipped on a first chain (13) with a pitch (P1) corresponding to the curving rate of the first bent part (11b) when the first straight line part (11a) moves and inclines towards the first bent part (11b). The clamp gap (L5) is thus made smaller within a range where adjacent clamps (5) are not in contact with each other. The first bent part (11b) has a 2-degree bent angle (theta) and a 700-millimeter bent radius. The clamps (5) each have a non-holding part with a 1.8-millimeter length (L1) and a holding part with a 62-millimeter length (L2). The gap (L3) between the supporting seats (30) is 1.8 mm long. The clamps have a length (L4) of 126mm. The gap (L5) between the clamps is 1.6 mm long. And the pitch (P1) is 127.6mm long.
Description
Technical field
The present invention relates to a kind of film stretching device and method of stretched film.
Background technology
In recent years, because of the development rapidly of LCD etc. or popularize, the demand of polymer film that is used for the diaphragm etc. of these LCDs is increasing.Especially the demand of cellulose acidylate film is increasing.Follow the increase of this demand to require the raising of productivity ratio.Cellulose acylate film (hereinafter referred to as film) uses curtain coating mould curtain coating dope on the supporter of advancing continuously, after this casting films is peeled from supporter, make by making it dry and twining.Can access in such solution film-forming method and the film of comparing no foreign matter and optical characteristics excellence based on the film-forming method that melt extrudes.
Especially regulate the method for deviation as the optical characteristics of regulating film, the method for using film stretching device such as tenter frame apparatus to stretch.And propose that following technology is arranged: in the stenter, the line part that the clip that makes the both side edges portion of controlling film extends along the long side direction that has to film and move to the pair of guide rails of the bend of the width bending of film.Thus, film is stretched to width.In the film after stretching, near the deviation of the part optical characteristics of grip portion can not be used as product greatly.Therefore these side edge portions of membranectomy and become product.Enlarge the part of using as product by reducing these excision amounts, boost productivity.
Japan Patent discloses manufacture method and the clip that discloses three cellulose acetate membrane in the flat 11-090943 communique record.This Japan Patent discloses in the flat 11-090943 communique, and the T font support seat of controlling film is set respectively on a plurality of clips, and a plurality of T font support seats are reverse setting mutually.Thus, control the film of the scope that repeats on the film direction of transfer.And, with on the film direction of transfer film length is made as Lt arbitrarily the time, will be in this film length Lt, when the film length overall of the part of controlling by the support seat is made as Ltt, 1.0≤(Ltt/Lt)≤1.99.Thus, film is controlled more than the length overall Ltt film forming length L t, and the part of not controlling film in the film direction of transfer disappears.Do not disappear owing to control the part of film in the film direction of transfer, so the deviation of the optic axis (slow axis) on the long side direction of the film after can suppressing to stretch.By suppressing the deviation of optic axis, subdue near the excision amount the grip portion in the film after the stretching.
And, in the blooming and manufacture method thereof of the open 2006-256064 communique record of Japan Patent, detect the cyclical movement of the optics rerum natura of film long side direction, the film that uses departing from of this detected cyclical movement and desired value to control next cycle transmits or stretches.When detecting the phase difference of left and right sides clip, eliminate the clip phase difference, the deviation of the optics rerum natura that inhibition is produced by the clip phase difference by independently controlling left and right sides clip speed respectively.
Japan Patent discloses in the flat 11-090943 communique, by the deviation of the optic axis on the long side direction that suppresses film, subdues near the excision amount of grip portion.But, because control the film side edge part, so it is elongated to control the part of the film on the width by the mutually reverse a plurality of T fonts support seats that set on the film width.Grip portion can not be used as product, is necessary excision.Therefore, increase, produce rate variance as the whole excision amount of film.In addition, many because the quantity of support seat becomes, so cost uprises when device becomes complicated, also uprise with the cost of the film of this device manufacturing itself.And, in the open 2006-256064 communique of Japan Patent, can suppress the deviation of the optics rerum natura of the film long side direction that the phase difference by left and right sides clip causes.But the deviation that can't suppress optic axis.
Summary of the invention
The present invention finishes in order to solve above-mentioned problem, film stretching device and method that its purpose is to provide the deviation of the enough simple OILS STRUCTURE DEPRESSION optic axises of a kind of energy to boost productivity.
In order to realize above-mentioned target, film stretching device of the present invention possesses pair of guide rails and a plurality of clip.Pair of guide rails has line part and bend.Described line part extends to the film direction of transfer.Described bend is to the width bending of described film.A plurality of clips are controlled the both side edges portion of described film.When controlling described film, moves by described a plurality of clip along described guide rail, and to the width described film that stretches.Described a plurality of clip is to set with the corresponding pitch of the rate of curving of described bend.Described a plurality of clip is adapted to that described adjacent clip gap each other diminishes when moving described bend in the discontiguous each other scope of adjacent clip.
Preferred described clip possesses framework and support seat.Described framework has the base of the side edge part of the described film of carrying.The rotation of described support seat is installed on the described framework freely, and described base between control controlling between the ejected position that position and relieving control of described film and rotate.Described support seat has the non-handle part of not controlling described film and controls 2 handle parts of described film.Described non-handle part is arranged at the approximate center of film direction of transfer.Described 2 handle parts are cut apart by described non-handle part.Preferred described support seat satisfies 1mm≤L1≤2.5mm and 50mm≤L2≤150mm.Wherein, L1 is the length of described non-handle part, and L2 is the length of 1 described handle part.
Preferred described support seat is made of the clamper of 2 independent rotations.Described 2 clampers have described handle part respectively.Described 2 clampers are vacated the gap and are set on the film direction of transfer.Described gap is described non-handle part.
In the described support seat, can integrally formed described 2 handle parts.Approximate center at the film direction of transfer forms recess, and described recess can be described non-handle part.
When the described support seat slit each other of described adjacent clip is made as L3, preferably satisfy 1mm≤L3≤2.5mm.
When the length of described clip is made as L4, preferably satisfy 101mm≤L4≤302.5mm.
Film drawing process of the present invention possesses the step of controlling and stretching step.Control step is controlled film with a plurality of clips both side edges portion.Stretching step is by moving described a plurality of clip along pair of guide rails, to the width described film that stretches.Described pair of guide rails has line part and bend.Described line part extends to the direction of transfer of described film.Described bend is to the width bending of described film.Described a plurality of clip is to set with the corresponding pitch of the rate of curving of described bend.Described a plurality of clip is adapted to that described adjacent clip gap each other diminishes when moving described bend in the discontiguous each other scope of adjacent clip.
The invention effect:
Among the present invention, a plurality of clips to be setting with the corresponding pitch of the rate of curving of described bend, so that during the bend of moving guide rail, described adjacent clip gap each other diminishes in the discontiguous each other scope of adjacent clip.Therefore, can reduce the part that film is not promptly controlled in clip gap each other.Thus, can suppress the deviation of optic axis, and boost productivity.
And, the length of non-handle part that is arranged at the support seat of clip is made as L1, when the length of handle part is made as L2,, then can carries out stable film and control and can reduce the part of not controlling film if satisfy 1mm≤L1≤2.5mm, 50mm≤L2≤150mm.
Description of drawings
By the reference accompanying drawing and read DETAILED DESCRIPTION OF THE PREFERRED, make those skilled in the art can understand above-mentioned purpose and advantage easily.
Fig. 1 is the vertical view of expression tenter frame apparatus.
Fig. 2 is the front view of expression clip and clip opener.
Fig. 3 is the stereogram of expression clip.
Fig. 4 is the stereogram of expression clip.
Fig. 5 is the vertical view of expression clip.
Fig. 6 is the stereogram of expression clip and clip opener.
Fig. 7 is the front view of expression clip and clip opener.
Fig. 8 is the concise and to the point figure of solution film-forming equipment.
Fig. 9 is the side view of expression clip.
The table of the experimental result of the amplitude of fluctuation deviation of the optic axis after Figure 10 stretches when being the material of expression change polymer film, non-handle part length, handle part length, clip length.
Figure 11 is illustrated in the side view that support seat central part is provided with the clip of recess.
The specific embodiment
As shown in Figure 1, tenter frame apparatus 2 usefulness clips 5 are controlled the both side edges portion of polymer film 3 when film direction of transfer A transmits, stretch to film width B.Tenter frame apparatus 2 is dry polymer film 3 in this stretching.
Each guide rail 11,12 possesses the 1st line part 11a, 12a, the 1st bend 11b, 12b, rake 11c, 12c, the 2nd bend 11d, 12d and the 2nd line part 11e, 12e.The 1st line part 11a, 12a extend to film direction of transfer A.The 1st bend 11b, the 12b lateral direction bending on film width B.Rake 11c, 12c extend with the inclination angle linearity by the 1st bend 11b, 12b bending.The 2nd bend 11d, the 12d interior side direction bending on film width B.The 2nd line part 11e, 12e extend to film direction of transfer A.The 1st bend 11b, 12b and the 2nd bend 11d, the bending direction of 12d is different still with identical rate of curving bending.
In the drawing zone 2b of the scope of the rake 11c, the 12c that become each guide rail 11,12, for example at the film of heated polymerizable thing below 200 ℃ 3 more than 80 ℃.Among this drawing zone 2b, by 5 movable inclined 11c of clip, 12c, the distance between a pair of clip increases gradually, and polymer film 3 stretches to film width B by clip 5.In the stretching relax zone 2c of the scope that becomes the 2nd line part 11e, 12e, the distance between a pair of clip does not change, and it is lax to stretch.In addition, stretching ratio can cooperate suitably changes such as desirable optical characteristics.
1st, the 2nd chain 13,14 is set up between drive sprocket 21,22 and the driven sprocket 23,24.Between these sprocket wheels 21～24, the 1st chain 13 is by 11 guiding of the 1st guide rail, and the 2nd chain 14 is by 12 guiding of the 2nd guide rail.Drive sprocket 21,22 is arranged at stenter and exports 27 sides, and they drive by not shown driving mechanism rotation.Driven sprocket 23,24 is arranged at stenter 26 sides that enter the mouth.
As Fig. 2 and Fig. 3, shown in Figure 4, clip 5 is made of gripper body 28 and guide rail installation portion 29.Gripper body 28 is made of support seat 30 and the framework 33 that is roughly the コ word shape.Support seat 30 is made of the 1st clamper 31 and the 2nd clamper 32.Framework 33 possesses the base 33b that the side edge part of the installation shaft 33a of each clamper 31,32 and carrier polymer film 3 is supported in rotation freely.
Each clamper 31,32 by the axial region 31a, the 32a that are installed on framework 33, and base 33b between control polymer film 3 handle part 31b, 32b and head 31c, 32c constitute.Each clamper 31,32 is installed on the framework 33, so that form small gap between handle part 31b on the film direction of transfer and handle part 32b.
Each clamper 31,32 be and base 33b between control controlling position (with reference to Fig. 3) and decontroling rotation between the ejected position (with reference to Fig. 2 and Fig. 4) control of polymer film 3, become by deadweight usually and control the position.Control and pass through base 33b and handle part 31b among the PA of starting position, 32b controls polymer film 3.
Guide rail installation portion 29 is made of installation frame 35 and guide roller 36,37,38.The 1st chain 13 or the 2nd chain 14 are installed on the installation frame 35.Guide roller 36～38 or contact with each supporting surface of drive sprocket 21,22 perhaps contacts with the supporting surface of the 1st guide rail 11 or the 2nd guide rail 12 and rotates.Thus, gripper body 28 can not come off from each sprocket wheel 21,22 or each guide rail 11,12, along each guide rail 11,12 guiding.
As shown in Figures 1 and 2, with each sprocket wheel 21～24 close clip opener 40 that are used to decontrol clip 5 that dispose.Before controlling starting position PA, contact in the driven sprocket 23,24 of stenter inlet 26 and make 40 one-tenth relieving states of clip opener with head 31c, the 32c of clip 5.Thus, can collect the side edge part of polymer film 3.And, when controlling starting position PA clip opener 40 from the head 31c, 32c break away from, clip 5 is sheathed on from ejected position by deadweight and controls the position, and controls the side edge part of polymer film 3.Equally, make 5 one-tenth ejected position of clip controlling among the ejected position PB of polymer film 3 by clip opener 40 in the drive sprocket 21,22 of stenter outlet 27.Thus, the side edge part of relieving polymer film 3 controls.
Begin the stretching of polymer film 3 at stretching starting position PC in the tenter frame apparatus 2, stop the stretching of polymer film 3 at stretching final position PD.From controlling starting position PA stretching polymer film 3 and transmitting not to the preheating zone 2a of stretching starting position PC.In addition, also stretching polymer film 3 and transmitting not from stretching final position PD to the stretching relax zone 2c that controls ejected position PB.
As shown in Figure 5, when clip 5 moves the 1st bend 11b of the 1st guide rail 11, specifically from the 1st line part 11a when the 1st bend 11b moves, near the inclination of adjacent clip 5 (among Fig. 5 below clip 5), clip 5 gap smaller each other.When this tilted, clip 5 was to be installed on the 1st chain 13 with the corresponding pitch P1 of the rate of curving of the 1st bend 11b, so that clip slit L5 diminishes in the discontiguous each other scope of clip 5.Similarly, clip 5 is to be installed on the 2nd chain 14 with the corresponding pitch of the rate of curving of the 1st bend 12b.And, because the 2nd bend 11d, 12d are with the rate of curving bending identical with the 1st bend 11b, 12b, so tilt when rake 11c, 12c move to the 2nd bend 11d, 12d at clip 5, during each other gap smaller of adjacent clip 5, clip 5 can not contact each other yet.In addition, clip 5 is in mobile (rotation) each sprocket wheel 21～24 o'clock, and adjacent clip 5 can not contact each other yet.In addition, in Fig. 5, depict as the rate of curving of the 1st bend 11b bigger than reality.
As Figure 6 and Figure 7, controlling 2 clip closers 42 that are provided with between starting position PA and the stretching starting position PC to the direction reinforcing of closing clip 5.This clip closer 42 contacts and makes it to the closing direction reinforcing with head 31c, the 32c of clip 5.Clip closer 42 makes each clamper 31,32 of the clip 5 that moves along guide rail 11 to rotation counterclockwise, and each clamper 31,32 that makes the clip 5 that moves along guide rail 12 is to the clockwise direction rotation, and respectively to the direction reinforcing of closing clip 5.
Clip closer 42 forms tapered portion 42a, the afterburning 42b of portion successively from the upstream side of film direction of transfer A.Tapered portion 42a guiding head 31c, 32c.If by tapered portion 42a guiding head 31c, 32c to the afterburning 42b of portion, then the 1st, the 2nd clamper 31,32 rotations, clip 5 to closing direction by reinforcing.In addition, clip closer 42 preferably uses resin system for the contact resistance of less inhibition and head 31c, 32c.Use nylon, Delrin (registration mark) etc. as resin.
Below the manufacture method of above-mentioned polymer film 3 is described.But below Xu Shu manufacture method and manufacturing installation are an example of the present invention, are not limited thereto.
As shown in Figure 8, solution film-forming equipment 50 has dope 51, curtain coating chamber 52,2 tenter frame apparatus 2, hothouse 54, cooling chambers 55 and batches chamber 56.In the present embodiment, will carry out (being left side, i.e. upstream side among Fig. 8) that film stretches in 2 tenter frame apparatus 2 at first and be called the 1st tenter frame apparatus 2, after carry out (being right side, i.e. downstream among Fig. 8) that film stretches and be called the 2nd tenter frame apparatus 2.
Be provided with 60,2 rotations of curtain coating mould roller 61 in the curtain coating chamber 52, rotate casting belt 62, stripper roll 63 and the pressure-reducing chamber 64 that rollers 61 move around these 2.Rotation roller 61 is by drive unit (not shown) rotation, towards the casting belt 62 that moves by rotation of this rotation roller 61, from curtain coating mould 60 dope 51 that spues, and forms casting films 65 at casting belt 62.
Curtain coating chamber 52 is set the temperature of casting films 65 easy cooling curings (gelation) for by register (not shown).And during casting belt 62 rotation about 9/10, casting films 65 reaches the gel strength with self-supporting, and stripper roll 63 is peeled off casting films 65 on the casting belt 62 as moistening film 68.And, in curtain coating chamber 52 be dried wind winding-up of casting films 65 dry, the remaining solvent amount of leaving the moistening film 68 of curtain coating chamber 52 is about 30 quality %.
Pressure-reducing chamber 64 relative curtain coating moulds 60 are disposed at roller travel direction upstream side, will be held in negative pressure in the pressure-reducing chamber 64.Thus, the back side (face that contacts with the casting belt 62 later) side with curtain coating liquid pearl reduces pressure into desirable pressure, the influence of carrying wind that minimizing is produced by the 61 high speed rotations of rotation roller.
Be provided with transfering department the 71, the 1st tenter frame apparatus 2 and the 2nd tenter frame apparatus 2 successively in the downstream of curtain coating chamber 52.Transfering department 71 will be directed into the 1st tenter frame apparatus 2 by the moistening film 68 that transfer roller 72 is peeled off.In the 1st tenter frame apparatus 2, moistening film 68 is dried to polymer film 3 when stretching.By the stretch processing under the predetermined condition in the 1st tenter frame apparatus 2, and the polymer film 3 that leaves the 1st tenter frame apparatus 2 is endowed desirable optical characteristics.Equally, polymer film 3 is dried when stretching in the 2nd tenter frame apparatus 2, and the polymer film 3 that leaves the 2nd tenter frame apparatus 2 is endowed desirable optical characteristics.In addition, hothouse by roller dry polymer film 3 while transmitting can be set between the 1st tenter frame apparatus 2 and the 2nd tenter frame apparatus 2.
1st, the downstream of the 2nd tenter frame apparatus 2 is respectively equipped with trimming device 73.Trimming device 73 blocks the limit at film both ends.Limit after this blocks is delivered in the disintegrating machine 74 by air-supply, is utilized as raw materials such as dopes by pulverizing at this again.
Hothouse 54 is provided with a plurality of rollers 77.Carry out drying by being wound on these rollers 77 at polymer film 3 and being transmitted.Hothouse 54 is connected with absorbing recovery device 78, and the solvent of evaporation from polymer film 3 is reclaimed in absorption.
The outlet side of hothouse 54 is provided with cooling chamber 55.At this cooling chamber 55 polymer film 3 is cooled to room temperature.The downstream of cooling chamber 55 is provided with forces Destaticizing device (destaticing rod) 79, and polymer film 3 is destaticed.In addition, force the downstream of Destaticizing device 79 to be provided with annular knurl and give roller 80, give annular knurl to the both side edges portion of polymer film 3.Batch and be provided with the coiling machine 81 with pressure roller 82 in the chamber 56, polymer film 3 is batching with the roller shape in volume in the heart.
Use acylated cellulose as polymer in this implementation method.Can enumerate Triafol T (TAC) or cellulose diacetate (DAC) as acylated cellulose.
[embodiment 1]
In the solution film-forming equipment 50 shown in Figure 8, curtain coating dope 51 on the surface of casting belt 62 and form casting films 65.The limit is supported casting films 65 limits with self-supporting with stripper roll 63 and is peeled off and obtain moistening film 68.The remaining solvent amount of the moistening film 68 that this obtains is 30 quality %.
Control the both side ends of moistening film 68 in the 1st tenter frame apparatus 2 with clip 5.Be that to deliver to baking temperature be 140 ℃ preheating zone 2a, drawing zone 2b and stretching relax zone 2c and carry out preheating, stretching and the lax polymer film 3 that becomes that stretches for the moistening film 68 of 30 quality % afterwards with remaining solvent amount.The width of the moistening film 68 before stretching was made as 100% o'clock, and the extensibility among the drawing zone 2b of the 1st tenter frame apparatus 2 is 105%.The remaining solvent amount of leaving the polymer film 3 of the 1st tenter frame apparatus 2 is 1 quality % following (for example 1 quality %).
Both side ends with trimming device 73 cutting polymer films 3 in the downstream that is arranged at the 1st tenter frame apparatus 2.Afterwards polymer film 3 is delivered to the 2nd tenter frame apparatus 2.In the 2nd tenter frame apparatus 2, the limit is with to deliver to baking temperature be 175 ℃ preheating zone 2a, drawing zone 2b and stretching relax zone 2c on the both side ends limit of clip 5 polymer film 3 that to control remaining solvent amount be 1 quality % and carry out preheating, stretching and stretch lax.The width of the polymer film 3 before stretching was made as 100% o'clock, and the extensibility among the drawing zone 2b is 120%.
Both side ends with trimming device 73 cutting polymer films 3 in the downstream that is arranged at the 2nd tenter frame apparatus 2.Be wound in the hothouse 54 more afterwards a plurality of rollers 77 and transmit during fully promote the drying of polymer film 3.Polymer film 3 is cooled to roughly to deliver to after the room temperature in cooling chamber 55 and batches chamber 56, the limit is batched on the volume core with pressure roller 82 squish lips and is obtained roller shaped polymer film 3.In addition, with voltage before batching by forcing Destaticizing device 79 to be adjusted, and, give roller 80 by annular knurl and give annular knurl.
As shown in Figure 9, the length of non-handle part is made as L1 (unit: mm), the length of handle part 31b, 32b is made as L2 (unit: mm), support seat 30 slit each other of adjacent clip 5 is made as L3 (unit: mm), the length of clip 5 is made as L4 (unit: mm), clip 5 is made as L5 (unit: mm) with the interval (hereinafter referred to as clip at interval) of clip 5.Non-handle part is the gap of 31,32 of each clampers, the non-polymer film 3 of controlling.These each length and at interval L1～L5 be length on the direction of transfer A of film.
Handle part 31b, 32b and non-handle part preferably satisfy 1mm≤L1≤2.5mm, 50mm≤L2≤150mm.When L1 is that 1mm compares with less than 1mm the time when above, in the more difficult contact of the adjacent clip of the bend of guide rail.2.5mm compare with greater than 2.5mm the time when following, more positively suppress the optic axis deviation.And L2 is that 50mm compares with less than 50mm the time when above, and the quantity of clip is few, more lowland suppression equipment cost.Compare with greater than 150mm the time when 150mm is following, give enough radiuses at stenter guide rail bend, the more difficult contact of adjacent clip.And support seat 30 is slit into 2 handle part 31b by non-grip portion, 32b, so be made as do not have non-handle part and on the film direction of transfer as comparing with a long handle part, the hold of the film that each clip 5 is interior is more even.Therefore, the deviation that suppresses the optic axis in each clip 5 better.
The support seat 30 of adjacent clip 5 slit L3 each other preferably satisfies 1mm≤L3≤2.5mm.L3 is that 1mm compares with less than 1mm the time when above, in the more difficult contact of the adjacent clip of the bend of guide rail.L3 is that 2.5mm compares with greater than 2.5mm the time when following, more positively suppresses the optic axis deviation.In addition, clip 5 is to each bend 11d of the 1st, 2 guide rails 11,12, when 12d moves, clip 5 was when this shrinking zone moves when the shrinking zone that reduces distance between a pair of clip perhaps was set, in the adjacent clip 5, and the most close and easy contact in both ends of the medial margin of the film width B of base 33b.Therefore, also can adjacent clip 5 not contacted by this part is set as R shape or conical in shape.At this moment, because the R shape of clip 5 and conical in shape are difficult to contact, so can dwindle L3, the lower limit of preferred L3 descends.
The length L 4 of clip 5 is preferably 101mm≤L4≤302.5.L4 is that 101mm compares with less than 101mm the time when above, can stably control with the minority clip, more lowland suppression equipment cost.And L4 is that 302.5mm compares with greater than 302.5mm the time when following, gives enough bending radius at stenter guide rail bend, adjacent clip 5 more difficult contacts.In addition, clip 5 is to each bend 11b of the 1st, 2 guide rails 11,12, when 12b moves, in the adjacent clip 5, and the most close and easy contact in both ends of the medial margin of the film width B of framework 33.Therefore, also can adjacent clip 5 not contacted by this part is set as R shape or conical in shape.At this moment, in the part that R shape and conical in shape by clip 5 shorten, the higher limit of preferred L4 descends.
As Fig. 9 and shown in Figure 10, among the embodiment 1, be made as follows in the 1st, the 2nd tenter frame apparatus 2: the gap that each clamper is 31,32 is that the length of the non-non-handle part length L 1=1.8mm that controls polymer film 3, each clamper 31,32 is each other slit L3=1.8mm, clip length L 4=126mm of support seat 30, the clip L5=1.6mm at interval of handle part length L 2=62mm, adjacent clip 5.At this moment, the pitch of clip 5 or P1=127.6mm, the 1st, in the 2nd tenter frame apparatus 2, be made as the angle of bend 0 (with reference to Fig. 5)=2 ° of each bend 11b, 11d, 12b, 12d, bending radius=7000mm is not so that to each bend 11b, 11d, 12b, adjacent clip 5 contacted each other when 12d moved.In addition, constitute polymer film 3 by DAC.
And, in the polymer film 3 that stretches by the 1st, the 2nd tenter frame apparatus 2, use the optical detecting device to measure 100m continuously to the optic axis amplitude of fluctuation of 150mm inside part from clip 5 front ends of film width B.And the amplitude of fluctuation of optic axis hour (less than ± 0.50 °) is qualified, and (more than ± 0.50 °) was made as defective when the amplitude of fluctuation of optic axis was big.Below, to embodiment 1, change the material of length L 1, handle part length L 2, support seat interval L3, clip length L 4, clip interval L5, pitch P1 and the polymer film 3 of non-handle part, obtain embodiment 2～6 and comparative example 1～4.It is identical with embodiment 1 that other films are created conditions.With the condition of these embodiment and comparative example and the results are shown among Figure 10.
This result of experiment in embodiment 1～6, can be dwindled the amplitude of fluctuation of the optic axis of the polymer film 3 after the stretching, and can make the scope of side cut narrow.Therefore, the productivity ratio of polymer film 3 is good.And in comparative example 1～4, the amplitude of fluctuation of the optic axis of the polymer film 3 after the stretching is big, and the scope on limit broadens.Therefore, produce rate variance.
And, as shown in figure 11, use to have the clip 90 replacement support seats 30 that approximate center is provided with the support seat 91 of recess 91d on film direction of transfer A, carried out same experiment.At this moment, also obtained same result.In addition, support seat 91 is identical with clamper 31,32, is made of axial region 91a, handle part 91b and head 91c.Be provided with 2 handle part 91b, be provided with recess 91d between each handle part 91b.
And in the support seat 91, integrally formed 2 handle part 91b, 92b are formed with the recess 91d as non-handle part between these 2 handle part 91b, 92b.Therefore, identical with support seat 30, the hold of the film in each clip 5 is more even.Therefore, the deviation that suppresses the optic axis in each clip 5 better.
Claims (7)
1. film stretching device is characterized in that possessing:
Pair of guide rails has line part and bend, and described line part extends to the direction of transfer of film, and described bend is to the width bending of described film; And
A plurality of clips, controlling described film both side edges portion and described a plurality of clip moves and described film is stretched to width along described guide rail when controlling described film, described a plurality of clip is to set with the corresponding pitch of the rate of curving of described bend, described a plurality of clip is adapted to when moving described bend, and described adjacent clip gap each other diminishes in the discontiguous each other scope of adjacent clip.
2. film stretching device as claimed in claim 1 is characterized in that,
Described clip possesses framework and support seat; Described framework has the base of the side edge part of the described film of carrying; Described support seat rotation be installed on freely described framework and and described base between control controlling of described film and rotate between the ejected position that position and relieving control; Described support seat has the non-handle part of not controlling described film and controls 2 handle parts of described film; Described non-handle part is arranged at the approximate center of film direction of transfer; Described 2 handle parts are divided by described non-handle part; Described support seat satisfies 1mm≤L1≤2.5mm and 50mm≤L2≤150mm; Wherein
L1 is the length of described non-handle part,
L2 is the length of 1 described handle part.
3. film stretching device as claimed in claim 2 is characterized in that,
Described support seat is made of 2 clampers of independent rotation, and described 2 clampers have described handle part respectively, and described 2 clampers are vacated the gap and set on the film direction of transfer, and described gap is described non-handle part.
4. film stretching device as claimed in claim 2 is characterized in that,
In the described support seat, described 2 handle parts are integrally formed, and form recess in the approximate center of film direction of transfer, and described recess is described non-handle part.
5. film stretching device as claimed in claim 2 is characterized in that,
When the described support seat slit each other of described adjacent clip is made as L3, satisfy 1mm≤L3≤2.5mm.
6. film stretching device as claimed in claim 2 is characterized in that,
When the length of described clip is made as L4, satisfy 101mm≤L4≤302.5mm.
7. a film drawing process is characterized in that, this method possesses following steps:
Control step, control the both side edges portion of film with a plurality of clips; And,
Stretching step, by move described a plurality of clip along pair of guide rails described film is stretched to width, described pair of guide rails has line part and bend, described line part extends to the direction of transfer of described film, described bend is to the width bending of described film, described a plurality of clip to be setting with the corresponding pitch of the rate of curving of described bend, and described a plurality of clips are adapted to that described adjacent clip gap each other diminishes when moving described bend in the discontiguous each other scope of adjacent clip.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP064578/2010 | 2010-03-19 | ||
| JP2010064578 | 2010-03-19 | ||
| JP042186/2011 | 2011-02-28 | ||
| JP2011042186A JP5602661B2 (en) | 2010-03-19 | 2011-02-28 | Film stretching apparatus and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102205635A true CN102205635A (en) | 2011-10-05 |
| CN102205635B CN102205635B (en) | 2015-05-13 |
Family
ID=44694840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110066303.XA Active CN102205635B (en) | 2010-03-19 | 2011-03-18 | Film stretching device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102205635B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269845A (en) * | 2014-05-30 | 2016-01-27 | 三星电子株式会社 | Film manufacturing apparatus and method thereof |
| CN106273389A (en) * | 2016-08-26 | 2017-01-04 | 艾能赛克机械设备(江苏)有限公司 | A kind of heating system for acrylic sheet material |
| CN106313494A (en) * | 2016-08-26 | 2017-01-11 | 艾能赛克机械设备(江苏)有限公司 | Stretching forming system for acrylic sheet |
| CN106313493A (en) * | 2016-08-26 | 2017-01-11 | 艾能赛克机械设备(江苏)有限公司 | Conveying system for acrylic sheets |
| CN106239887B (en) * | 2016-08-26 | 2018-10-09 | 艾能赛克机械设备(江苏)有限公司 | A kind of clamping device for acrylic sheet material |
| CN112936138A (en) * | 2021-02-23 | 2021-06-11 | 重庆云天化纽米科技股份有限公司 | Membrane extraction and membrane penetration fixture and membrane penetration method |
| CN113152015A (en) * | 2021-04-30 | 2021-07-23 | 清远市诚鸿纺织有限公司 | Cloth straining device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60239559A (en) * | 1984-05-11 | 1985-11-28 | 太平工機株式会社 | Tenter chain |
| JP2005035131A (en) * | 2003-07-18 | 2005-02-10 | Fuji Photo Film Co Ltd | Tentering machine |
-
2011
- 2011-03-18 CN CN201110066303.XA patent/CN102205635B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60239559A (en) * | 1984-05-11 | 1985-11-28 | 太平工機株式会社 | Tenter chain |
| JP2005035131A (en) * | 2003-07-18 | 2005-02-10 | Fuji Photo Film Co Ltd | Tentering machine |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269845A (en) * | 2014-05-30 | 2016-01-27 | 三星电子株式会社 | Film manufacturing apparatus and method thereof |
| CN106273389A (en) * | 2016-08-26 | 2017-01-04 | 艾能赛克机械设备(江苏)有限公司 | A kind of heating system for acrylic sheet material |
| CN106313494A (en) * | 2016-08-26 | 2017-01-11 | 艾能赛克机械设备(江苏)有限公司 | Stretching forming system for acrylic sheet |
| CN106313493A (en) * | 2016-08-26 | 2017-01-11 | 艾能赛克机械设备(江苏)有限公司 | Conveying system for acrylic sheets |
| CN106239887B (en) * | 2016-08-26 | 2018-10-09 | 艾能赛克机械设备(江苏)有限公司 | A kind of clamping device for acrylic sheet material |
| CN112936138A (en) * | 2021-02-23 | 2021-06-11 | 重庆云天化纽米科技股份有限公司 | Membrane extraction and membrane penetration fixture and membrane penetration method |
| CN112936138B (en) * | 2021-02-23 | 2023-07-21 | 重庆恩捷纽米科技股份有限公司 | Diaphragm extraction and film penetrating clamp and film penetrating method |
| CN113152015A (en) * | 2021-04-30 | 2021-07-23 | 清远市诚鸿纺织有限公司 | Cloth straining device |
| CN113152015B (en) * | 2021-04-30 | 2022-01-18 | 清远市诚鸿纺织有限公司 | Cloth straining device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102205635B (en) | 2015-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102205635A (en) | Film stretching device and method | |
| EP3275625B1 (en) | Saddle curved-surface transition-based stepless bidirectional stretching method and device for film | |
| KR101555697B1 (en) | Roll-press device | |
| CN100480021C (en) | Film stretching apparatus and solution film-forming method | |
| WO2012102178A1 (en) | Method and apparatus for producing resin film | |
| CN103534078A (en) | Process for combined rolling and stretching of tapes | |
| TW201536529A (en) | Production method of stretched film and film stretching apparatus | |
| CN104070667A (en) | Method of manufacturing stretched film and facility for stretching film | |
| CN113459370A (en) | Film stretching thickness control method | |
| CN102189677A (en) | Film stretching device and method thereof | |
| CN107826842A (en) | A kind of film amplitude-expanding device | |
| JP5602661B2 (en) | Film stretching apparatus and method | |
| CN207596178U (en) | A kind of film amplitude-expanding device | |
| CN103122073B (en) | Solution film-forming method | |
| CN113172110B (en) | Device for coating metallic lithium | |
| CN101713841A (en) | Method for manufacturing phase difference film | |
| JP2012135882A (en) | Method for manufacturing optical film | |
| CN112020413B (en) | Method for manufacturing optical film | |
| CN203317739U (en) | Novel synchronous bidirectional drawing machine for thin film | |
| KR101307307B1 (en) | Solution film-forming method and casting apparatus | |
| CN107340618A (en) | Support meanss and support system | |
| CN112606370A (en) | Film blowing machine and processing method thereof for processing plastic bag | |
| CN215320787U (en) | Online annealing and stretching treatment device for blown film | |
| CN110802833A (en) | Film biaxial stretching device | |
| CN102990915A (en) | Film stretching method and solution film-forming method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |