CN106029340A - Stretched film manufacturing method - Google Patents
Stretched film manufacturing method Download PDFInfo
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- CN106029340A CN106029340A CN201580009789.XA CN201580009789A CN106029340A CN 106029340 A CN106029340 A CN 106029340A CN 201580009789 A CN201580009789 A CN 201580009789A CN 106029340 A CN106029340 A CN 106029340A
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- Prior art keywords
- film
- width
- stretched film
- shearing
- manufacture method
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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
- 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
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
- B29C55/08—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique transverse to the direction of feed
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Provided is a stretched film manufacturing method comprising: a first step for obtaining a stretched film by grasping both edges of a thermoplastic resin film in the width direction using clips and stretching at least in the width direction; a second step for passing the stretched film, after both edges in the width direction have been trimmed off, past a drive roll; and a third step for further trimming off the two edges of the stretched film in the width direction after passing the drive roll.
Description
Technical field
The present invention relates to the manufacture method of a kind of stretched film, more specifically, relate to by along film width
Two ends of width are sheared after carrying out stretching (cross directional stretch) and are manufactured and cut by degree direction
The method cutting manufactured stretched film.
Background technology
In the image display devices such as liquid crystal indicator, such as, employ polaroid, polaroid guarantor
Cuticula, optical compensation films (phase retardation film etc.), antiglare film, antireflection film etc. are by thermoplastic resin structure
The various bloomings become.In these bloomings, such as, there are the toughness in order to improve film, imparting desired
Optical characteristics and implement the blooming of stretch processing (cross directional stretch) along film width.
The cross directional stretch of film is usually and clamps two ends of film width with clip, it is provided that to stenter
Deng and carry out.Width two ends of film by cross directional stretch are generally for removing owing to drawing
Gripped with clip when stretching and become the part of unstretched state, or in order to be institute by film width adjustment
Desired size, by shearing (cutting out), is removed and makes blooming (such as Japanese Unexamined Patent Publication 2006
-No. 272616 publications (patent documentation 1) and Japanese Unexamined Patent Publication 2010-036414 publication (patent
Document 2)).
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2006-272616 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2010-036414 publication
Summary of the invention
Invent problem to be solved
Soon film by pressing from both sides after being clamped two ends of width with clip and carrying out cross directional stretch
Two end portion that son grips are the thickest, and the parts thinner being stretched, due to this thickness difference, meeting
Two ends of width and near (two end portions that gripped by clip and adjacent with them in
Side region) produce fold.Further, since this thickness difference is not uniform in whole film conveyance direction,
It may thus be appreciated that after being stretched, be wound before during become film cranky will be because of.Additionally,
If it is clear that creating such fold or two of cranky state down cut stretched film
End, then due to the impact of this fold, the width of the film after shearing will not on whole length direction all
Even, but in film width, produce deviation.
It is an object of the invention to, it is provided that a kind of method, be by two ends of width are being used
Clip is clamped and is carried out stretching (cross directional stretch) shearing width direction Liang Ge end afterwards along film width
And manufacture the method being sheared manufactured stretched film, the long size with uniform width can be manufactured
Film.
For the method solving problem
In order to reach above-mentioned purpose, the present invention provides the manufacture method of stretched film shown below.
[1] manufacture method of a kind of stretched film, comprising:
First operation, at least edge after two end clips of width of thermoplastic resin film are clamped
Width stretches, and obtains stretched film；
Second operation, behind two ends of width shearing described stretched film, is run through driving
Roller；With
3rd operation, two ends of width of the stretched film after shearing further by driving roller.
[2] according to the manufacture method described in [1], wherein, in described 3rd operation, right
Described two ends of state down cut width being applied tension force by the stretched film after driving roller.
[3] according to manufacture method described in [1] or [2], wherein, also include described the
Stretched film after three operations utilizes the operation that coiler device winds.
[4] according to the manufacture method recorded any one of [1]～[3], wherein, described the
Before three operations, it is additionally included in stretched film the operation of shielding film of fitting.
[5] according to the manufacture method recorded any one of [1]～[4], wherein, described the
In one operation, the stretching ratio on width is more than 1.5 times.
[6] according to the manufacture method recorded any one of [1]～[5], wherein, described first
The thickness of the width central part of the stretched film obtained in operation is below 100 μm.
[7] according to the manufacture method recorded any one of [1]～[6], wherein, described in constituting
The thermoplastic resin of thermoplastic resin film is (methyl) acrylic resin or polystyrene resins.
Invention effect
Method according to the invention it is possible to be continuously manufactured by the shearing with the long size of uniform width
Processing stretched film.
Detailed description of the invention
Hereinafter, the present invention is described in detail.
(1) first operation
This operation be two end clips of width of thermoplastic resin film are clamped after at least edge
Width carries out stretching (cross directional stretch), obtains the operation of stretched film.Preferred thermoplastic resin film
Film for long size.The film of so-called long size, refers to a length of more than the 100m's of film conveyance direction
Film.In the case of Gai, thermoplastic resin film be such as sent continuously from carrying device, by along by leading
Roller, the transport path driving roller etc. to build transport continuously, are being configured with the stretch processing of stretching device
District is carried out stretch processing.
It is not particularly limited for constituting the kind of the resin of thermoplastic resin film, yet with utilizing this
The shearing stretched film that the method for invention obtains is preferably by as shown blooming is such as illustrated above
Use, the most preferably may be constructed the thermoplastic resin of blooming.
Specifically, thermoplastic resin film preferably has (the most transparent) of light transmission
Thermoplastic resin film.The concrete example of thermoplastic resin includes chain polyolefin resin, cyclic polyolefin
The polyene of resinoid (norbornene resin etc.), polythylene resin, polypropylene-based resin etc
Hydrocarbon resins；The polyester resin of polyethylene terephthalate etc；Tri-n-butyltin methacrylate
(methyl) acrylic resin of resin etc；Cellulosic triacetate, cellulose diacetate it
The cellulosic resin of class；Polycarbonate resin；Polyvinyl alcohol resin；Polyvinyl acetate esters
Resin；Polyarylate resinoid；Polystyrene resins；Polyether sulfone resin；Polysulfones resin；Poly-
Amide-type resin；Polyimide based resin；And their mixture, copolymer.
And, in this specification, so-called " (methyl) acrylic compounds " refers to selected from acrylic acid and methyl-prop
At least one party in olefin(e) acid.
Wherein, (methyl) acrylic resin, polystyrene resins are comprised at thermoplastic resin film
In the case of, clip the toughness of the part gripped is low, is leading when film is applied high conveyance tension force
On roller, this part easily ftractures, and is therefore difficult to the conveyance of the film after just stretching with high-tension.Cause
This, easily produce fold, thus apply the advantage of the method for the present invention big in the film after just stretching.
About the thickness of thermoplastic resin film for example, 30～400 μm, preferably 50～200 μm.
As the method stretched the most in the width direction after two end clips of width are clamped,
Stenter method can be enumerated.Stenter method is that two end clips (chuck) of film width are solid
Method fixed, that carry out in an oven stretching while transversely being expanded at this clip interval.
The stretch processing of this operation is not limited to cross directional stretch, it is also possible to be also along longitudinally (film length
Direction) stretch simultaneously or shrink while biaxial stretch-formed.It is the most biaxial stretch-formed in stenter method,
Can be by while transversely expanding clip interval, also edge longitudinally expands contraction and carries out.
Stretching-machine (stent stretching-machine) used in stenter method is generally of: carry out preheating procedure
Region, carrying out the region of stretching process and carry out the region of heat fixation operation, possessing can be independent
The mechanism of the temperature of ground regulation regional.
Preheating procedure is disposed on the operation before the operation stretching thermoplastic resin film, be by
Thermoplastic resin film heats sufficiently to carry out the operation of the temperature stretched.For the preheating in preheating procedure
Temperature, the phase transition temperature (vitrification point or fusing point) at the resin by constituting thermoplastic resin film sets
During for T, can be T-10 DEG C～about T+50 DEG C.
Stretching process is the operation carrying out thermoplastic resin film the most in the width direction stretching.Stretching work
Draft temperature in sequence can be T-10 DEG C～about T+50 DEG C.Stretching ratio on width
For example, 1.2～4 times, preferably 1.5～3 times.This stretching ratio is the biggest, then the portion that film is held
Divide the biggest with the thickness difference of the part not being held, have and easily produce becoming of fold at aforesaid position
Gesture, however according to the present invention, even if stretching ratio is more than 1.5 times, even more than 2 times, also
The shearing stretched film with uniform width can be obtained.Stretching ratio can utilize following formula:
Stretching ratio (again)=(length after stretching)/(length before stretching)
Obtain.Length described herein, refers to film width in the case of cross directional stretch.
Heat fixation operation is the film width at the end of generally keeping stretching process, make this
The film operation passed through to the region of fixed temperature in baking oven.In heat fixation operation, it is also possible to from drawing
Passing through to the region of fixed temperature in baking oven while constriction film width is played at the end of stretching operation.Heat
The shrinkage amplitude of the film in fixed work order such as can be set to less than 15%, be more preferably set to 5% with
Under.Heat fixation temperature can be set to and draft temperature same degree or the temperature being less than it.
The thickness of the stretched film for obtaining in this operation, for the thickness of width central part,
About for example, 5～200 μm, preferably 10～150 μm, more preferably 20～100 μm.Drawn
The thickness of the part stretched is the least, then have the easiest trend producing fold at aforesaid position, so
And according to the present invention, even if the thickness of width central part is below 100 μm, even 80 μm
Below, it is also possible to obtain there is the shearing stretched film of uniform width.
(2) second operations
First the stretched film of gained is unclamped from clip by this operation, preferably along transport path even
While transporting, shear continuously, remove two ends of width.When shearing, can be suitably
Use shears (shear cutter).
The method of the present invention is by shearing (this operation and the 3rd work described later of 2 times altogether
Sequence) and obtain the method with the shearing stretched film of desired width, thus while this operation
In the width (shearing width) of two ends that is sheared be that the stretched film after shearing is not reaching to
The width of the degree of desired width, but at least thickness is the biggest compared with the part being stretched
Partly, the width two end portions the most at least gripped by clip is sheared in this operation.
Can also be while transporting the stretched film of long size continuously, will be because of continuous to two end
The end coiler device being sheared that ground carries out shearing and generates winds successively.In the case of Gai, in order to
Stably transporting, wind the end of this long size, above-mentioned shearing width preferably each end is set to
More than 30mm and below 300mm, more preferably each end are set to more than 35mm and 200mm
Below.It is more than 35mm and below 200mm by shearing width being set to each end,
When applying tension force from the coiler device end to being sheared, can be uniform to the width of this end
Ground gives tension force, thus has the trend that can it be stably transported.
It addition, similarly, in the second time shearing of the 3rd operation described later, shearing
The conveyance of end, in the case of winding, in order to make easily, by two ends in this operation
Shearing width be adjusted to shearing after the final desired film width of film width ratio (secondary cut
Cut the film width after processing) the biggest 60mm～600mm, the biggest 70mm～400mm.
For the conveyance speed of stretched film during shearing, in order to shearing width being kept as far as possible permanent
Fixed, it is preferably set to 2～20m/ minute, is more preferably set to 3～15m/ minute.It addition, based on identical
Reason, film conveyance speed preferably the most constant during shearing, removing during shearing
The variation sending speed is preferably in the range of ± 1%.The conveyance speed of stretched film can be with by means of rotation
Rotary speed meter or the laser Doppler-type noncontact rotary speed meter etc. that turn encoder are measured.
It addition, for tension force during shearing, stretched film applied, in order to by shearing width as far as possible
Keep constant, be preferably set to 5N/m～200N/m, be more preferably set to 30N/m～120N/m.Separately
Outer based on identical reason, described tension force is preferably the most constant during shearing, more preferably
The scope of ± 5%.This tension force can be with utilizing the force cell detection being attached on tension force pick-up roller
Method, the method etc. that calculates tension force according to the displacement of roller is measured.In the present invention, after such as
The described downstream in cutting operation arranges driving roller, hence with the adjustment of the rotating speed of this driving roller,
Can carry out that film during shearing is transported speed easily and tension force remains desired value
Control.Alternatively, it is also possible to drive roller near configuration dance roller, by dance roller
Film pressurization is adjusted tension force.
Then, manufactured stretched film it is sheared by being configured under the cutting operation in transport path
The driving roller of trip side.The thickness of the part being stretched of the stretched film after above-mentioned shearing is the least,
Conveyance then the most easily produces fold, but drives the roller above-mentioned tension force of applying to eliminate by using
Fold, thus, utilizes ensuing 3rd operation can obtain the shearing with uniform width
Stretched film.Can also be in the shearing of the second operation and the transport path of the 3rd shearing described later
Between multiple driving roller is set.
So-called drive roller, be connect directly or indirectly have driving source can be with the roller of Spin Control
Can give for the driving force of film conveyance and rotating freely the tension force that the film that transported applies
Roller.The roller that drives of the present invention has the upstream in the transport path controlling this driving roller and/or downstream
The function of tension force of film.For example, it is possible to can from a pair niproll pushing film up and down to
Few one uses and drives roller.The rotation of niproll can become the driving force of film conveyance.Utilize clamping
The adjustment of the rotating speed driving roller in roller, tension force film conveyance speed can be controlled, being added on film.
It addition, beyond niproll, it is also possible to be used alone film to hold around angle (embracing I angle) big
Drive roller, control the upstream of this driving roller and/or the tension force of the film in downstream.
Another example driving roller is doubling roller.Doubling roller is also identical with niproll by rotating freely
Pair of rolls constitute roller, but be for when between pair of rolls (such as when being folded with adhesive)
By multiple films, from pushing up and down, thus film is fitted.Can be such by pair of rolls structure
At least one in the doubling roller become uses and drives roller.It addition, the rotation of doubling roller can also become
The driving force of film conveyance, utilizes the adjustment of its rotating speed, can control film conveyance speed, be added on film
Tension force.
It addition, as driving roller, it is possible to use can the vacuum furnace (suction roll) of Spin Control.
Vacuum furnace is formed with multiple suction socket at outer peripheral face, can be by inhaling from this suction socket suction air
The roller rotated freely of the attached film contacted with outer peripheral face.Vacuum furnace and niproll, doubling roller are different, are
Only support the roller of the one side of the film passed through, it is possible to use above-mentioned absorption prevents the slip of film and roller,
Therefore the rotary driving force of roller can be delivered to adsorbed film, thus, it is possible to applying to open to film
Film is transported while power.
Different, merely undertake the effect of the film advanced that supports, cannot give for film conveyance
Driving force, maybe cannot to film apply tension force deflector roll (also referred to as free roll.) be not included in driving roller
In.Even if being run through deflector roll after above-mentioned cutting operation, it is also difficult to eliminate fold, ensuing
The shearing of the 3rd operation produces the deviation of film width.
(3) the 3rd operations
This operation is preferably while transporting continuously along transport path, to by driving after roller
Two ends of the width of stretched film carry out the operation sheared, remove further.Utilize this operation,
The shearing stretched film with desired width can be obtained.When shearing, can make suitably
Use shears.While transporting the thermoplastic resin film of long size continuously, carry out successively first～
3rd operation and in the case of manufacturing shearing stretched film, generally by the shearing stretched film of gained
Utilize coiler device to wind successively and make film roll cylinder.
According to the shearing of this operation that the downstream at above-mentioned driving roller is carried out, due to above-mentioned driving
The pushing of roller or suction or also have and become eliminating to the tension force of film from what above-mentioned driving roller applied
The state of fold, the shearing that therefore can be continuously manufactured by having the long size of uniform width draws
Stretch film.
In this operation, preferably when to shearing, stretched film (by driving after roller) is applied with
Carry out shearing under the state of power, and such tension force such as can utilize above-mentioned driving roller and above-mentioned
Coiler device applies, more specifically, it is possible to use include driving the niproll of roller and above-mentioned winding
Device applies.The torque of the magnetic powder cluth can also being disposed in coiler device by control, is come
Control the tension force including driving between niproll and the coiler device of roller.But be not restricted to that these, also
Other driving roller can be set in the downstream of above-mentioned driving roller and at the upstream side of coiler device, profit
Drive roller to apply tension force with these, and carry out shearing between these driving rollers.
For tension force stretched film applied when shearing, in order to shearing width is kept as far as possible
Constant, obtain the stretched film of uniform as far as possible width, be preferably set to 5N/m～120N/m, more excellent
Choosing is set to 30N/m～100N/m.Being additionally based on identical reason, mentioned strain is in the shearing phase
Between the most constant.
It addition, for the conveyance speed of stretched film during shearing, in order to by shearing width as far as possible
Keep constant, obtain the stretched film of as far as possible uniform width, be preferably set to 3～20m/ minute, more
It is preferably set to 5～15m/ minute.Being additionally based on identical reason, film conveyance speed is in the shearing phase
Between the most constant, the variation of the conveyance speed during shearing be preferably ± 1% scope
In.Film conveyance speed and tension force during shearing can utilize the rotating speed appearance driving roller, coiler device
Change places control.
Can also the upstream side of coiler device in transport path, reservoir is set.Reservoir is to use
The device of the film conveyance temporarily ceasing side downstream in the film moved by accumulation.This is being set
In the case of the reservoir of sample, the upstream side at reservoir carries out the shearing of this operation.
(4) other operation
(a) longitudinal stretching operation
The thermoplastic resin film being supplied to the first operation can also be before the first operation, by along film length
Direction has carried out longitudinal stretching process.Process as longitudinal stretching, can enumerate: be run through position
While baking oven between 2 niprolls arranged with spacing out, utilize between these 2 niprolls
Difference carries out stretching between the roller of longitudinal stretching；Or the hot-rolling being heated by surface with
It (or can also be hot-rolling that peripheral speed is different from the deflector roll of hot-rolling.Between) and thus with hot-rolling
The hot-rolling stretching of longitudinal stretching is carried out under the heated condition contacted and produce；Compression stretching；Employ folder
The stretching etc. of son.
In longitudinal stretching processes, also identical with cross directional stretch process, preheating procedure and heat can be set
Fixed work order.The stretching ratio of longitudinal stretching is not particularly limited, for example, 1.2～4 times, preferably
It it is 1.5～3 times.
(b) rolling step
As it has been described above, while transporting the thermoplastic resin film of long size continuously, carry out successively
In the case of one～the 3rd operation manufactures shearing stretched film, generally the shearing of gained is drawn
Stretch film to utilize coiler device to wind successively and make film roll cylinder.The film width of the film roll cylinder of gained is whole
On length direction uniformly, therefore end face is concordant, excellent appearance.
(c) bonding process
The operation of shielding film of fitting before the 3rd operation, can also be arranged in stretched film.So-called screening
Cover film, also referred to as protecting film or surface protection film, be the film on surface for protecting stretched film.
Shielding film is typically to arrange adhesive layer in the one side of the film comprising thermoplastic resin and constitute.By
This adhesive layer is at the surface of stretched film laminating shielding film.Thermoplastic resin can be such as polyethylene etc
Polythylene resin, the polypropylene-based resin of polypropylene, polyethylene terephthalate or
The polyester resin etc. of PEN etc.
The laminating of shielding film can increase thickness because fitting shielding film in stretched film, or to stretched film
Apply high tension force, thus can reduce the fold in conveyance, the most preferably in the shearing of the 3rd operation
Upstream side carry out.In the case of Gai, for shielding film of fitting, it is possible to use at least one of doubling roller
As above-mentioned driving roller.
Embodiment
Hereinafter, embodiment will be given and the present invention will be specifically described further, but the present invention will be not
Limited by these examples.
＜ embodiment 1 ＞
By the methyl methacrylate/acrylic acid methyl ester (weight ratio that vitrification point Tg is 108 DEG C
94/6) granule puts into extruder, from the T-shaped die head extrusion that design temperature is 270 DEG C.To be squeezed
The two sides of the membranaceous molten resin gone out sandwiches with a pair polishing roll that temperature is set as 110 DEG C and enters
Row cooling, obtains long size non-stretched of thickness 120 μm, width 1000mm as film roll cylinder
Film.
Then, transport continuously while sending unstretching film from film roll cylinder, be allowed to pass sequentially through
Preheated zone (preheating temperature: 110 DEG C), stretch zones (stretch between roller, draft temperature: 120 DEG C),
Heat fixation region (heat fixation temperature: 120 DEG C), obtains thickness (width central authorities as film roll cylinder
The thickness in portion) 93 μm, the longitudinal stretching film of long size of width 720mm.Drawing of this longitudinal stretching
Stretching multiplying power is 1.8 times.
Then, transport continuously while sending longitudinal stretching film from film roll cylinder, be allowed to lead to successively
Cross preheated zone (preheating temperature: 120 DEG C), stretch zones (draft temperature: 120 DEG C), heat fixation
Region (heat fixation temperature: 120 DEG C), obtain thickness (thickness of width central part) 45 μm,
The gradually biaxially-stretched film of the long size of width 1400mm.Cross directional stretch in stretch zones be by
The part clip of two end 20mm of width of distance film is clamped and is supplied to stent stretching
Machine, is carried out by being spaced in transversely expanding by clip.The stretching ratio of this cross directional stretch is 2.0
Times.
While the gradually biaxially-stretched film of gained is continued conveyance continuously, by the two of this film ends
Portion shears with the width shears of 50mm respectively, cuts out film width into 1300mm.Cut
Cut the conveyance speed of the film adding man-hour, tension force is set to 3m/ minute, 80N/m.
Continue the gradually biaxially-stretched film after transporting shearing continuously, be run through niproll (
The roller of side is for driving roller.The most identical.After), by the two of this film ends respectively with
The width shears of 150mm is sheared, and is cut out by film width as 1000mm, uses up-coiler
Wind and obtain film roll cylinder.The conveyance speed of film during shearing, tension force be set to 3m/ minute,
100N/m。
Observe the end face of the film roll cylinder of gained, as a result of which it is, there is no particularly pertinent part, but
Smooth, whole end face is the most concordant in the range of about ± 0.5mm.
＜ embodiment 2 ＞
After making gradually biaxially-stretched film pass through niproll after primary shearing, second
When making gradually biaxially-stretched film before secondary shearing by doubling roller, will be as self-adhesion syzygy protecting film
" ト レ テ ッ Network " (Toray film processing (strain)) overlap gradually on biaxially-stretched film by with
Outward, obtain the film roll being made up of the gradually biaxially-stretched film with shielding film same as in Example 1ly
Cylinder.Observe the end face of the film roll cylinder of gained, as a result of which it is, there is no particularly pertinent part, but
Smooth, whole end face is the most concordant in the range of about ± 0.5mm.
＜ comparative example 1 ＞
After producing gradually biaxially-stretched film, by the two of this film ends respectively same as in Example 1ly
Shear with the width shears of 200mm, film width is cut out as 1000mm.Shearing adds
The conveyance speed of the film in man-hour, tension force are set to 3m/ minute, 80N/m.This shearing is not made to add
Gradually biaxially-stretched film after work passes through niproll, and does not carry out secondary shearing, and
Direct winder winding around and make film roll cylinder.Observe the end face of the film roll cylinder of gained, its result
It is, the most concordant, it can be seen that the part of prominent more than 1mm.
Claims (7)
1. a manufacture method for stretched film, comprising:
First operation, at least edge after two end clips of width of thermoplastic resin film are clamped
Width stretches, and obtains stretched film；
Second operation, behind two ends of width shearing described stretched film, is run through driving
Roller；With
3rd operation, two ends of width of the stretched film after shearing further by driving roller.
Manufacture method the most according to claim 1, wherein,
In described 3rd operation, to the described state being applied tension force by the stretched film after driving roller
Two ends of down cut width.
Manufacture method the most according to claim 1 and 2, wherein,
The operation that stretched film after also including described 3rd operation utilizes coiler device to wind.
4. according to the manufacture method according to any one of claims 1 to 3, wherein,
Before described 3rd operation, it is additionally included in stretched film the operation of shielding film of fitting.
5. according to the manufacture method according to any one of Claims 1 to 4, wherein,
In described first operation, the stretching ratio on width is more than 1.5 times.
6. according to the manufacture method according to any one of Claims 1 to 5, wherein,
The thickness of the width central part of the stretched film obtained in described first operation be 100 μm with
Under.
7. according to the manufacture method according to any one of claim 1～6, wherein,
The thermoplastic resin constituting described thermoplastic resin film is (methyl) acrylic resin or polyphenyl
Vinyl resins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811229622.6A CN109719929A (en) | 2014-02-26 | 2015-02-16 | The manufacturing method of stretched film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014035441A JP6328956B2 (en) | 2014-02-26 | 2014-02-26 | Method for producing stretched film |
| JP2014-035441 | 2014-02-26 | ||
| PCT/JP2015/054064 WO2015129493A1 (en) | 2014-02-26 | 2015-02-16 | Stretched film manufacturing method |
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| CN201811229622.6A Division CN109719929A (en) | 2014-02-26 | 2015-02-16 | The manufacturing method of stretched film |
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| CN106029340A true CN106029340A (en) | 2016-10-12 |
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| CN201580009789.XA Pending CN106029340A (en) | 2014-02-26 | 2015-02-16 | Stretched film manufacturing method |
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|---|---|
| JP (1) | JP6328956B2 (en) |
| KR (1) | KR102098444B1 (en) |
| CN (2) | CN109719929A (en) |
| TW (1) | TWI651186B (en) |
| WO (1) | WO2015129493A1 (en) |
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| CN101827681A (en) * | 2008-08-19 | 2010-09-08 | 日东电工株式会社 | Method for cutting optical film and device employing the method |
| JP5339017B1 (en) * | 2012-11-06 | 2013-11-13 | コニカミノルタ株式会社 | Manufacturing method of long stretched film |
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| JP5317950B2 (en) * | 2009-12-25 | 2013-10-16 | 株式会社日本触媒 | Manufacturing method of optical film |
| JP5617608B2 (en) * | 2010-12-24 | 2014-11-05 | 日本ゼオン株式会社 | Film ear cut and recovery device, method for producing long optical film, and method for producing film ear roll |
| JPWO2012114820A1 (en) * | 2011-02-21 | 2014-07-07 | コニカミノルタ株式会社 | Film manufacturing method and film manufacturing apparatus |
| EP2692508B1 (en) | 2011-03-29 | 2018-12-19 | Toray Industries, Inc. | Tenter oven and manufacturing method for stretched film |
| KR101811489B1 (en) * | 2012-01-30 | 2018-01-25 | 스미또모 가가꾸 가부시키가이샤 | A process for producing a polarizer |
| JP5912860B2 (en) * | 2012-05-25 | 2016-04-27 | 株式会社日本触媒 | Method for producing stretched resin film |
| CN203063012U (en) * | 2013-02-06 | 2013-07-17 | 厦门顺峰包装材料有限公司 | Online recycling device of plastic film scrap edge |
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- 2014-02-26 JP JP2014035441A patent/JP6328956B2/en not_active Expired - Fee Related
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- 2015-02-16 CN CN201811229622.6A patent/CN109719929A/en active Pending
- 2015-02-16 CN CN201580009789.XA patent/CN106029340A/en active Pending
- 2015-02-16 WO PCT/JP2015/054064 patent/WO2015129493A1/en active Application Filing
- 2015-02-16 KR KR1020167023181A patent/KR102098444B1/en active IP Right Grant
- 2015-02-24 TW TW104105794A patent/TWI651186B/en not_active IP Right Cessation
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| JPS58160122A (en) * | 1982-03-19 | 1983-09-22 | Teijin Ltd | Manufacture of film having uniform physical properties |
| JPH01228825A (en) * | 1988-03-09 | 1989-09-12 | Mitsubishi Petrochem Co Ltd | Manufacture of uniaxially-oriented film |
| CN1690741A (en) * | 2004-04-19 | 2005-11-02 | 柯尼卡美能达精密光学株式会社 | Method for producing optical compensation film, optical compensation film, polarizing plate, displaying apparatus |
| CN1841092A (en) * | 2005-03-28 | 2006-10-04 | 柯尼卡美能达精密光学株式会社 | Optical film |
| CN101402741A (en) * | 2007-09-27 | 2009-04-08 | 富士胶片株式会社 | Film stretching method, film stretching device and solution casting method |
| JP2010036414A (en) * | 2008-08-04 | 2010-02-18 | Nippon Shokubai Co Ltd | Method of manufacturing optically stretched film |
| CN101827681A (en) * | 2008-08-19 | 2010-09-08 | 日东电工株式会社 | Method for cutting optical film and device employing the method |
| JP5339017B1 (en) * | 2012-11-06 | 2013-11-13 | コニカミノルタ株式会社 | Manufacturing method of long stretched film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109719929A (en) | 2019-05-07 |
| KR102098444B1 (en) | 2020-04-07 |
| TWI651186B (en) | 2019-02-21 |
| KR20160125396A (en) | 2016-10-31 |
| TW201542340A (en) | 2015-11-16 |
| JP6328956B2 (en) | 2018-05-23 |
| WO2015129493A1 (en) | 2015-09-03 |
| JP2015160328A (en) | 2015-09-07 |
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