CN104822508A - Method for manufacturing stretched film - Google Patents
Method for manufacturing stretched film Download PDFInfo
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- CN104822508A CN104822508A CN201380063015.6A CN201380063015A CN104822508A CN 104822508 A CN104822508 A CN 104822508A CN 201380063015 A CN201380063015 A CN 201380063015A CN 104822508 A CN104822508 A CN 104822508A
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- draw roll
- niproll
- film
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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
- B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
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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 method for manufacturing stretched film, particularly stretched film for optical uses, that has excellent transparency, few scratches, and is suitable for a variety of processing uses. This method for manufacturing stretched films, which comprises a process for longitudinal stretching of the film (called the longitudinal stretching process below) using two stretching rolls that are disposed at a distance from each other, an upstream side stretching roll (called the first stretching roll below) and a downstream side stretching roll (called the second stretching roll below), is characterized in that there are two or more nip rolls near the first stretching roll and two or more nip rolls near the second stretching roll.
Description
Technical field
The present invention relates to a kind of stretched film, particularly relate to the manufacture method of the stretched film towards optical applications.
Background technology
From the transparency, dimensional stability, the chemical-resistant of excellence, the Biaxially oriented thermoplastic resin moldings such as polyester, are widely used as the various optical film used under the state making Transmission light, reflection.Particularly for the prismatic lens basement membrane of liquid crystal display (LCD), hard painting basement membrane, antireflection (AR) film basement membrane, light diffusion basement membrane, in the purposes such as transparent and electrically conductive film of touch panel, because require excellent intensity, dimensional stability, so use thicker film.
In such optical film, require the excellent transparency, and in prismatic lens processing or be firmly coated with processing, AR adds man-hour, what require with the coating layer processed etc. is excellent in adhesion, in addition, wishes that the optic defect of film is few.
Patent Document 1 discloses the method for improveing membrane operations (easy slip, batching property, resistance to adhesive etc.), marresistance etc.
In addition, in order to obtain the more excellent film of the transparency, although by the content that reduces the particle in base material film or when manufacturing without when particle, but in this case, the transparency uprises, marresistance can decline on the other hand, and easily produces the damage becoming the surface of optical defect reason.Therefore, as suppressing the technology producing such damage, Patent Document 2 discloses, by making film surface, there is surfactant and making more than length 20mm and the damage of depth capacity more than 0.5 μm is 10/m
2following Polyester optical film.But, be difficult to suppress the generation of more small damage, the level required for recent optical film can not be met.
Prior art document
Patent document
Patent document 1: Japanese Laid-Open Patent Publication 62-214518 publication
Patent document 2: Japanese Unexamined Patent Publication 9-183201 publication
Summary of the invention
Invent problem to be solved
In method disclosed in patent document 1, because be formed at the hole of particle periphery when film stretches, thus the transparency of film can decline, and therefore, is not suitable for the manufacture method of the optic transparency of requirement for height or homogeneous blooming.
In addition, in the method disclosed in patent document 2, be difficult to suppress the generation of more small damage, the level required by optical film in recent years cannot be met.
Therefore, the invention provides a kind of transparency excellent, damage is few, the manufacture method of stretched film that be suitable for various processing purposes, that be suitable for optical applications.
For solving the means of problem
Concentrated research is carried out to the problems referred to above, found that, configured 2 draw rolls separated by a distance, when the film be made up of thermoplastic resin is carried out that roller is vertical to stretch, by setting the niproll near 2 draw rolls as follows, the damage of film can be suppressed to produce, and then complete the present invention.That is, the present invention is as follows.
1) a kind of manufacture method of stretched film, comprise the operation using the draw roll (hereinafter referred to as the 1st draw roll) of upstream side and the draw roll (hereinafter referred to as the 2nd draw roll) in downstream film to be carried out to vertical stretch processing, the feature of described manufacture method is
Niproll near the 1st draw roll is more than 2.
2) according to 1) described in the manufacture method of stretched film, it is characterized in that,
Niproll near the 1st draw roll is 2, in 2 niprolls near the 1st draw roll, the niproll of upstream side is designated as the 0th niproll, the niproll in downstream is designated as the 1st niproll, position clamped by the 1st draw roll and the 0th niproll is designated as the 0th handle part, position clamped by the 1st draw roll and the 1st niproll is designated as the 1st handle part, now
The position of the 0th handle part is the end of the upstream side of the contact area of film and the 1st draw roll, and the position of the 1st handle part is the end in the downstream of the contact area of film and the 1st draw roll.
3) according to 1) or 2) described in the manufacture method of stretched film, it is characterized in that,
Niproll near the 2nd draw roll is more than 2.
4) according to 1) ~ 3) according to any one of the manufacture method of stretched film, it is characterized in that,
Niproll near the 2nd draw roll is 2, in 2 niprolls near the 2nd draw roll, the niproll of upstream side is designated as the 2nd niproll, the niproll in downstream is designated as the 3rd niproll, position clamped by the 2nd draw roll and the 2nd niproll is designated as the 2nd handle part, position clamped by the 2nd draw roll and the 3rd niproll is designated as the 3rd handle part, now
The position of the 2nd handle part is the end of the upstream side of the contact area of film and the 2nd draw roll, and the position of the 3rd handle part is the end in the downstream of the contact area of film and the 2nd draw roll.
5) according to 1) ~ 4) according to any one of the manufacture method of stretched film, it is characterized in that,
0th niproll has cleaning agency (hereinafter referred to as the 1st cleaning agency),
1st cleaning agency can clean the 1st conveying roller of the upstream side being positioned at the 1st draw roll.
6) according to 1) ~ 5) according to any one of the manufacture method of stretched film, it is characterized in that,
3rd niproll has cleaning agency (hereinafter referred to as the 2nd cleaning agency),
2nd cleaning agency can clean the 2nd conveying roller in the downstream being positioned at the 2nd draw roll.
Invention effect
According to the manufacture method of stretched film of the present invention, can provide a kind of film, it can suppress the generation damaged, and reduces the defect, particularly optical defect that become this damage results.
Accompanying drawing explanation
Fig. 1 is the skeleton diagram of manufacture method of the present invention.
Detailed description of the invention
Below, the present invention will be described.
Film of the present invention is not particularly limited, but refers to thermoplastic resin film.
Thermoplastic resin film is not particularly limited, but, if enumerate typical example, then suitably can use PETG, poly-NDA glycol ester, nylon 6, polyphenylene sulfide etc.
In order to manufacture such film, the raw materials such as above-mentioned PETG are used to make particle containing particle, in fact not containing the particle of particle etc.Towards in the film of optical applications, in order to ensure the transparency, preferably not containing the particle of particle.After their suitable dryings, be supplied to known melt extruder, and utilize polymer filter to filter.
Be extruded as flake from the slit die of slit-shaped, and on casting roller, carry out cooling curing and be made into (non-oriented) film that do not stretch.By making this non-oriented polyester film carry out biaxial stretch-formed successively along film length direction and width, stretched film can be obtained.
The present invention comprises the manufacture method using the draw roll (hereinafter referred to as the 1st draw roll) of upstream side and the draw roll (hereinafter referred to as the 2nd draw roll) in downstream film to be carried out to the stretched film of the operation (hereinafter referred to as vertical stretching process) of vertical stretch processing.That is, in the present invention, for carrying out vertical stretch processing, two draw rolls are used to be important.
Specifically, use draw roll, carry and heat, and be heated to the temperature of regulation.In order to suppress the generation damaged, the surface roughness Ra of draw roll is preferably less than 0.1 μm.In manufacture method of the present invention, the heating-up temperature before the 1st draw roll is preferably 68 ~ 83 DEG C, is more preferably 70 ~ 80 DEG C, more preferably 72 ~ 75 DEG C.If the heating-up temperature before the 1st draw roll is lower than 68 DEG C, then film easily ruptures, if higher than 83 DEG C, then film can be adhered to roller, easily produces blemish.
Below, Fig. 1 is used to be described for the vertical stretching process in the manufacture method of stretched film of the present invention.In addition, shown in Fig. 1 is only 1 embodiment, and the present invention is not limited to this figure.
In present embodiment, in order to stretch to film (7), prepare the 1st draw roll (5) and the 2nd draw roll (6) in mode separated by a distance.
In the present invention, the niproll near the 1st draw roll is more than 2 is important.In the present invention, as long as be more than 2 near the niproll of the 1st draw roll, be just not particularly limited, but preferably 2 ~ 3, be particularly preferably 2.Namely, according to Fig. 1, it is characterized by, niproll near the 1st draw roll is 2, in 2 niprolls near the 1st draw roll, the niproll of upstream side is designated as the 0th niproll, the niproll in downstream is designated as the 1st niproll, now, in order to hold film by the 1st draw roll, the 0th niproll (1) and the 1st niproll (2) are configured near the 1st draw roll.If only there is the 1st niproll, that is, if the niproll near the 1st draw roll only has 1, then tensile stress can not be blocked fully, can slide at the upper film of the 1st conveying roller (12) of the upstream side being positioned at the 1st draw roll, there is the problem easily producing damage.
In the present invention, if the position clamped by the 1st draw roll and the 0th niproll is designated as the 0th handle part, position clamped by the 1st draw roll and the 1st niproll is designated as the 1st handle part, then preferably the position of the 0th handle part is the end of the upstream side of the contact area of film and the 1st draw roll, and the position of the 1st handle part is the end in the downstream of the contact area of film and the 1st draw roll.That is, according to Fig. 1, on the 1st draw roll, the position of the 0th handle part that the 0th niproll holds is preferably the end of upstream side in the contact area (8) of film and the 1st draw roll.More preferably, on the 1st draw roll, the position of the 1st handle part that the 1st niproll holds is the end in downstream in the contact area of film and the 1st draw roll.Thus, on the 1st draw roll, film can not slide, and can suppress the generation damaged.
In the present invention, the niproll near the 2nd draw roll is preferably more than 2.In the present invention, although be preferably more than 2 near the niproll of the 2nd draw roll, be more preferably 2 ~ 3, more preferably 2.Namely, according to Fig. 1, niproll near the 2nd draw roll is 2, in 2 niprolls near the 2nd draw roll, if the niproll of upstream side to be designated as the 2nd niproll, the niproll in downstream is designated as the 3rd niproll, then in order to hold film by the 2nd draw roll, preferably the 2nd niproll (3) and the 3rd niproll (4) is configured near the 2nd draw roll.If only there is the 2nd niproll, that is, if the niproll near the 2nd draw roll only has 1, then tensile stress can not be blocked fully, can slide at the upper film of the 2nd conveying roller (13) in the downstream being positioned at the 2nd draw roll, there is the problem producing damage.
In the present invention, position clamped by the 2nd draw roll and the 2nd niproll is being designated as the 2nd handle part, when position clamped by the 2nd draw roll and the 3rd niproll is designated as the 3rd handle part, the position of the 2nd handle part is preferably the end of the upstream side of the contact area of film and the 2nd draw roll, and the position of the 3rd handle part is preferably the end in the downstream of the contact area of film and the 2nd draw roll.That is, according to Fig. 1, the position of the 3rd handle part that the 3rd niproll holds on the 2nd draw roll, is preferably the end in downstream in the contact area (9) of film and the 2nd draw roll.It is further preferred that on the 2nd draw roll the position of the 2nd handle part that the 2nd niproll holds, be the end of upstream side in the contact area of film and the 2nd draw roll.Thus, on the 2nd draw roll, film can not slide, and can suppress the generation damaged.
In the present invention, preferably in any position of vertical stretching process, there is the cleaning agency for conveying roller.And in the present invention, preferably the 0th niproll has cleaning agency (hereinafter referred to as the 1st cleaning agency), and the 1st cleaning agency can clean the 1st conveying roller of the upstream side being positioned at the 1st draw roll.That is, according to Fig. 1, preferably above-mentioned 0th niproll has the 1st cleaning agency (10), can clean the 1st conveying roller of the upstream side being positioned at the 1st draw roll.This is because long-time when producing film, draw roll can be dirty and become damage Producing reason, therefore, by possessing the mechanism that can carry out when not cutting off film cleaning, can be down to minimum by the generation of bits.
In addition, refer to that pair roller is with the cloth of certain loading pressing cleaning etc. and can the mechanism of movement in the width direction at this said cleaning agency.By using such cleaning agency, can clean safely when not cutting off film.
In the present invention, preferably, the 3rd niproll has cleaning agency (hereinafter referred to as the 2nd cleaning agency), and the 2nd cleaning agency can clean the 2nd conveying roller in the downstream being positioned at the 2nd draw roll.That is, according to Fig. 1, preferably, the 3rd niproll has the 2nd cleaning agency, can clean the 2nd conveying roller in the downstream being positioned at the 2nd draw roll.This is because if produce film for a long time, then draw roll can be dirty and become damage Producing reason, therefore, owing to possessing the mechanism that can carry out when not cutting off film cleaning, thus can be down to minimum by the generation of bits.
In the present invention, preferably have in a non contact fashion to the mechanism that film heats up between the 1st draw roll and the 2nd draw roll.As such mechanism, such as, infrared heater etc. can be enumerated.
The temperature of indulging film during the stretching of stretching process is such as 70 ~ 130 DEG C, is preferably 75 ~ 120 DEG C, is more preferably 80 ~ 110 DEG C.If indulge the temperature of film during the stretching of stretching process lower than 70 DEG C, film easily ruptures, if the temperature of film is higher than 130 DEG C when stretching, then macromolecule is difficult to orientation, easily ruptures when stretching in the width direction.At this, during the stretching of vertical stretching process the temperature of film to refer to from the 1st draw roll to the 2nd draw roll between region the temperature of film.
In addition, the stretching ratio of vertical stretching process is such as 2.5 ~ 5.0 times, is preferably 2.7 ~ 3.5 times.If vertical stretching ratio is less than 2.5 times, be then difficult to obtain intensity, on the other hand, if the stretching ratio of vertical stretching process is greater than 5.0 times, then high molecular orientation is strong, easily ruptures when stretching in the width direction.
After vertical stretching process, also at the two sides of this stretched film or the easy adhesive linkage of coated on one side, and horizontal stretching process can be led to.The method of coating is not particularly limited, such as, inverse painting method, gravure coating process, bar can be used to be coated with method, stick coating method, line stick coating method, the painting of mouth mould method, spraying process etc.
Although depend on film thickness, speed, with or without online coating etc., but also with can by the monadic stretching membrane (stretched film of the present invention) that obtained by said method such as at 80 ~ 160 DEG C, be preferably 85 ~ 130 DEG C, at being more preferably 90 ~ 120 DEG C, stretch such as 2.5 ~ 6.0 times in the width direction, be preferably 3.0 ~ 5.5 times, be more preferably 3.5 ~ 5.0 times.If exceed this temperature, multiplying power scope, then cause the problem of stretch uneven or film fracture etc. sometimes.If particularly the draft temperature of horizontal stretching process is lower than 80 DEG C, then there is film and easily rupture and the situation being difficult to manufacture.On the other hand, if the draft temperature of horizontal stretching process is higher than 160 DEG C, there is the situation of the sufficient intensity that can not obtain as demoulding purposes.
After stretching, also at 200 ~ 240 DEG C, 205 ~ 235 DEG C can be preferably, at being more preferably 210 ~ 230 DEG C, carry out thermal finalization as required, then, carry out relaxing within 25%.If the temperature particularly during heat fixation is lower than 200 DEG C, then the structural instability of polyester because crystallinity is not in progress sometimes.
Manufacture method of the present invention, also can have horizontal stretching process after vertical stretching process, after this external horizontal stretching process, preferably has and is cut off together with embossing processing part and the operation removed in cut-out operation marginal portion thick for thickness.
By the stretched film that the present invention obtains, as mentioned above, the transparency is excellent, damage is few, be suitable for various processing purposes, therefore, can be used for various optical film, particularly can perform well in prismatic lens basement membrane, hard painting basement membrane, antireflection (AR) film basement membrane, light diffusion basement membrane, transparent and electrically conductive film etc.
Embodiment
Below, by embodiment, the present invention is described in detail.The evaluation method of effect is as follows.
(1) visual examination
Gather the sample (goods wide × 1 ~ 2m) of sheet from the film roller top layer of fixedly batching length, in dark place under the state of skew ray, the maximum major diameter of visualization damage is the damage number of more than 500 μm, and is scaled every 1m
2damage number, carry out classification as follows.
A grade: 50/m
2below
B grade: be greater than 50/m
2and 75/m
2below
C grade: be greater than 75/m
2and 100/m
2below
D grade: be greater than 100/m
2and 120/m
2below
E grade: be greater than 120/m
2(defective)
In above-mentioned determinating reference, no problem in film practicality more than D grade, be spendable level, but more than preferred C grade.
(Production Example)
The particle of PETG after dry 8 hours, is supplied to extruder, melt extrudes, and filter at 275 DEG C at 160 DEG C.Then, via the slit die remaining on 285 DEG C, chill roll utilizes the tape casting applying electrostatic, and the curtain coating being wound in surface temperature 25 DEG C is roused and carries out cooling curing, obtains unstretching film.
In order to stretch along its length, be that unstretching film is warming up to 74 DEG C by the roller of 0.1 μm with surface roughness Ra.Then, during the film of the stretching of vertical stretching process, temperature is maintained at 74 DEG C.In vertical stretching process, between the 1st draw roll and the 2nd draw roll, additional 3.0 speed ratios stretch.The 1st niproll (niproll near the 1st draw roll only has 1) is had near the 1st draw roll, the position of the 1st handle part that 1st niproll holds film is the most end, downstream in the region that the 1st draw roll contacts with film, near the 2nd draw roll, have the 2nd niproll (niproll near the 2nd draw roll only has 1), the position of the 2nd handle part that the 2nd niproll holds film is positioned at the most end of upstream side in the region that the 2nd draw roll contacts with film.In addition, vertical stretching process makes film heat up, while stretch by the infrared heater between the 1st draw roll and the 2nd draw roll.The method is called basic vertical drawing process.
(embodiment 1)
Except above-mentioned vertical drawing process substantially, the following stretching device formed can be used: there is the 0th niproll near the 1st draw roll, the position of the 0th handle part that 0th niproll holds film is positioned at the position in the downstream of most 30 °, the end of upstream side apart from the contact area of the 1st draw roll and film, all the other aspects are same with Production Example, stretch along its length.
Then, this stretched film is imported stenter, stretch after 3.6 times at the temperature of 100 DEG C in the width direction, heat-treat at 225 DEG C with constant width.Afterwards, implement the relaxation processes of 6% further in the width direction, obtain the double axial orientated polyester film of thickness 188 μm.
The damage number level of the stretched film of gained is shown in table 1.In addition, the damage number level of producing after 1 day is also shown in table 1.
(embodiment 2)
In the vertical stretching process of embodiment 1, the position of the 0th handle part is changed to the end of the upstream side of the contact area of the 1st draw roll and film, in addition in mode similarly to Example 1, obtain biaxially-stretched film.
The damage number level of the film of gained is shown in table 1.In addition, the damage number level of producing after 1 day is also shown in table 1.
(embodiment 3)
In the vertical stretching process of embodiment 2, there is the 3rd niproll near the 2nd draw roll, the position making the 3rd niproll hold the 3rd handle part of film becomes the position of the upstream side of the end of downstream side 30 ° of the contact area of distance the 2nd draw roll and film, in addition in mode similarly to Example 2, obtain biaxially-stretched film.
The damage number level of the film of gained is shown in table 1.In addition, the damage number level of producing after 1 day is also shown in table 1.
(embodiment 4)
In the vertical stretching process of embodiment 3, the position of the 3rd handle part is changed to the position of the end of downstream side of the contact area of the 2nd draw roll and film, in addition in mode similarly to Example 3, obtain biaxially-stretched film.
The damage number level of the film of gained is shown in table 1.In addition, the damage number level of producing after 1 day is also shown in table 1.
(embodiment 5)
In the vertical stretching process of embodiment 4, the 0th niproll has the 1st cleaning agency, in addition in mode similarly to Example 4, obtains biaxially-stretched film.
The damage number level of the film of gained is shown in table 1.In addition, by the damage number level of production after 1 day and after production uses the 1st cleaning agency cleaning the 1st conveying roller for 1 day afterwards the damage number level of the film of gained be shown in table 1.
(embodiment 6)
In the vertical stretching process of embodiment 5, the 3rd niproll has the 2nd cleaning agency, in addition in mode similarly to Example 5, obtains biaxially-stretched film.
The damage number level of the film of gained is shown in table 1.In addition, by the damage number level of production after 1 day and after production uses the 1st, the 2nd cleaning agency cleaning the 1st, the 2nd conveying roller for 1 day afterwards the damage number level of the film of gained be shown in table 1.
(comparative example 1)
The damage number level of the biaxially-stretched film obtained by basic vertical drawing process and the damage number level after producing 1 day are shown in table 1.
Table 1
In comparative example 1, niproll near the 1st draw roll is 1, but this niproll and the position clamped by the 1st draw roll are the end in the downstream of the contact area of film and the 1st draw roll, therefore, in table, the position clamped by this niproll and the 1st draw roll is designated as the 1st handle part.
Embodiment 1,2, in comparative example 1, niproll near the 2nd draw roll is 1, but this niproll and the position clamped by the 2nd draw roll are the end of the upstream side of the contact area of film and the 2nd draw roll, therefore, in table, the position clamped by this niproll and the 2nd draw roll is designated as the 2nd handle part.
Utilizability in industry
By the stretched film that manufacture method of the present invention obtains, there is the transparency excellent, damage is few, be suitable for the advantage of various processing purposes, therefore, can suitably for various optical film, particularly prismatic lens basement membrane, hard painting basement membrane, antireflection (AR) film basement membrane, light diffusion basement membrane, transparent and electrically conductive film etc.
Description of reference numerals
1 the 0th niproll
2 the 1st niprolls
3 the 2nd niprolls
4 the 3rd niprolls
5 the 1st draw rolls
6 the 2nd draw rolls
7 films
8 the 1st contact areas
9 the 2nd contact areas
10 the 1st cleaning agencies
11 the 2nd cleaning agencies
12 the 1st conveying rollers
13 the 2nd conveying rollers
Claims (6)
1. a manufacture method for stretched film, comprise and use the draw roll i.e. draw roll in the 1st draw roll and downstream i.e. the 2nd draw roll of upstream side film to be carried out to the operation of vertical stretch processing, the feature of described manufacture method is,
Niproll near the 1st draw roll is more than 2.
2. the manufacture method of stretched film according to claim 1, is characterized in that,
Niproll near the 1st draw roll is 2, in 2 niprolls near the 1st draw roll, the niproll of upstream side is designated as the 0th niproll, the niproll in downstream is designated as the 1st niproll, position clamped by the 1st draw roll and the 0th niproll is designated as the 0th handle part, position clamped by the 1st draw roll and the 1st niproll is designated as the 1st handle part, now
The position of the 0th handle part is the end of the upstream side of the contact area of film and the 1st draw roll, and the position of the 1st handle part is the end in the downstream of the contact area of film and the 1st draw roll.
3. the manufacture method of stretched film according to claim 1 and 2, is characterized in that,
Niproll near the 2nd draw roll is more than 2.
4. the manufacture method of the stretched film according to any one of claims 1 to 3, is characterized in that,
Niproll near the 2nd draw roll is 2, in 2 niprolls near the 2nd draw roll, the niproll of upstream side is designated as the 2nd niproll, the niproll in downstream is designated as the 3rd niproll, position clamped by the 2nd draw roll and the 2nd niproll is designated as the 2nd handle part, position clamped by the 2nd draw roll and the 3rd niproll is designated as the 3rd handle part, now
The position of the 2nd handle part is the end of the upstream side of the contact area of film and the 2nd draw roll, and the position of the 3rd handle part is the end in the downstream of the contact area of film and the 2nd draw roll.
5. the manufacture method of the stretched film according to any one of Claims 1 to 4, is characterized in that,
0th niproll has cleaning agency, i.e. the 1st cleaning agency,
1st cleaning agency can clean the 1st conveying roller being positioned at the 1st draw roll upstream side.
6. the manufacture method of the stretched film according to any one of Claims 1 to 5, is characterized in that,
3rd niproll has cleaning agency, i.e. the 2nd cleaning agency,
2nd cleaning agency can clean the 2nd conveying roller being positioned at the 2nd draw roll downstream.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012264929 | 2012-12-04 | ||
| JP2012-264929 | 2012-12-04 | ||
| PCT/JP2013/081702 WO2014087872A1 (en) | 2012-12-04 | 2013-11-26 | Method for manufacturing stretched film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104822508A true CN104822508A (en) | 2015-08-05 |
| CN104822508B CN104822508B (en) | 2017-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380063015.6A Active CN104822508B (en) | 2012-12-04 | 2013-11-26 | The manufacture method of stretched film |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPWO2014087872A1 (en) |
| KR (1) | KR20150091302A (en) |
| CN (1) | CN104822508B (en) |
| TW (1) | TW201433594A (en) |
| WO (1) | WO2014087872A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845755A (en) * | 2016-09-20 | 2018-03-27 | 住友化学株式会社 | film stretching device and film manufacturing method |
| CN114643703A (en) * | 2022-03-24 | 2022-06-21 | 江苏集萃功能材料研究所有限公司 | Film stretching system and application thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4021723B1 (en) * | 2019-08-29 | 2023-09-27 | Saint-Gobain Glass France | Method and device for producing a thermoplastic interlayer film |
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| JP4655381B2 (en) * | 2001-02-22 | 2011-03-23 | 東レ株式会社 | Production method of polyester film |
| JP2010167768A (en) * | 2008-12-22 | 2010-08-05 | Toyobo Co Ltd | Biaxially stretched polyethylene terephthala-based resin film and method of manufacturing the same |
| JP5424717B2 (en) * | 2009-05-29 | 2014-02-26 | 株式会社日本触媒 | Manufacturing method of optical film |
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2013
- 2013-11-26 KR KR1020157011403A patent/KR20150091302A/en not_active Application Discontinuation
- 2013-11-26 JP JP2014506379A patent/JPWO2014087872A1/en active Pending
- 2013-11-26 CN CN201380063015.6A patent/CN104822508B/en active Active
- 2013-11-26 WO PCT/JP2013/081702 patent/WO2014087872A1/en active Application Filing
- 2013-12-03 TW TW102144158A patent/TW201433594A/en unknown
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| JPS62214518A (en) * | 1986-03-14 | 1987-09-21 | Diafoil Co Ltd | Polyester film for magnetic recording medium |
| JPS63134222A (en) * | 1986-11-26 | 1988-06-06 | Kureha Chem Ind Co Ltd | Longitudinal orientation of polyphenylene sulfide film and device therefor |
| US20030213549A1 (en) * | 2002-02-22 | 2003-11-20 | Mcamish Larry Hughey | Film, laminated sheet and methods of making same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845755A (en) * | 2016-09-20 | 2018-03-27 | 住友化学株式会社 | film stretching device and film manufacturing method |
| CN107845755B (en) * | 2016-09-20 | 2022-02-11 | 住友化学株式会社 | Film stretching device and film manufacturing method |
| CN114643703A (en) * | 2022-03-24 | 2022-06-21 | 江苏集萃功能材料研究所有限公司 | Film stretching system and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2014087872A1 (en) | 2017-01-05 |
| TW201433594A (en) | 2014-09-01 |
| WO2014087872A1 (en) | 2014-06-12 |
| KR20150091302A (en) | 2015-08-10 |
| CN104822508B (en) | 2017-10-10 |
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