CN113334467B - Optical film coiled material processing method and optical film coiled material - Google Patents

Abstract

The application discloses an optical film coiled material processing method and an optical film coiled material, and relates to the technical field of optical film cutting. The processing method of the optical film coil comprises the following steps: cutting the web to obtain a plurality of membrane assemblies; in the direction parallel to the width direction of the coiled material, enabling the projections of the cutting positions of two adjacent membrane assemblies on the width direction of the coiled material to at least partially overlap; and/or enabling the projections of the cutting positions of two adjacent film assemblies on the length of the coiled material to at least partially overlap in the direction parallel to the length direction of the coiled material. The application provides an optical film coiled material processing method, can obviously improve the diaphragm subassembly output of coiled material unit area.

Description

Optical film coiled material processing method and optical film coiled material

Technical Field

The application relates to the technical field of optical film cutting, in particular to an optical film coiled material processing method and an optical film coiled material.

Background

In the production process of the brightness enhancement film, the whole wide material roll needs to be cut into sheet materials which are suitable for the size of the backlight module of a terminal product (such as a mobile phone, a tablet personal computer, a computer and the like).

In the traditional cutting method, firstly, a whole wide material roll is cut to obtain a plurality of sub material rolls with certain width; then, a row of sheet material is cut along the length of the daughter web. However, a large area of waste material remains at the edge of each sub-roll, resulting in waste and a low sheet yield.

Disclosure of Invention

The application provides an optical film coiled material processing method and an optical film coiled material, so that waste of materials is reduced, and yield is improved.

The present application provides:

a method of processing an optical film web, comprising:

cutting the coiled material to obtain a plurality of membrane assemblies;

in the direction parallel to the width direction of the coiled material, enabling the projections of the cutting positions of two adjacent membrane assemblies on the width direction of the coiled material to at least partially overlap; and/or

And in the direction parallel to the length direction of the coiled material, enabling the projections of the cutting positions of two adjacent membrane assemblies on the length of the coiled material to at least partially overlap.

Thus, no further slitting of the web is required before the film assembly is cut. The projection of the cutting positions of two adjacent film assemblies on the width of the coiled material is at least partially overlapped in the direction parallel to the width of the coiled material, and/or the projection of the cutting positions of two adjacent film assemblies on the length of the coiled material is at least partially overlapped in the direction parallel to the length direction of the coiled material. Take two adjacent columns of diaphragm subassemblies that arrange along coiled material length direction as the example, mark as first row and second row, the diaphragm subassembly of second row can utilize the waste material between two adjacent diaphragm subassemblies in the first row, can make the waste material into the diaphragm subassembly. Similarly, for two adjacent rows of film assemblies arranged along the width of the web, denoted as a first row and a second row, the film assemblies of the second row can utilize waste material between two adjacent film assemblies in the first row. Therefore, the production of waste materials can be reduced, the utilization rate of materials is improved, the waste of the materials is reduced, and correspondingly, the yield of the membrane component of the unit area of the coiled material can also be improved.

In some possible embodiments, the optical film web processing method further comprises:

and transferring a plurality of membrane assemblies between the two bearing films.

On one hand, a plurality of membrane assemblies can be supported on a continuous supporting membrane so as to be rolled and convenient to store and transport. On the other hand, the membrane assembly can be further protected by the bearing film to avoid damage.

In some possible embodiments, the turning of the plurality of membrane modules to between two carrier films includes:

sequentially connecting the plurality of membrane assemblies to a first bearing membrane in a rotating manner;

and covering a second bearing film on one side of the plurality of membrane assemblies departing from the first bearing film.

In some possible embodiments, the web is made of a first protective film, an optical film and a second protective film, which are arranged in succession;

the cutting the web to obtain a plurality of membrane assemblies includes sequentially severing the first protective film, the optical film, and the second protective film along the cutting station.

The first protective film, the optical film and the second protective film of the coiled material are cut off, so that the operation difficulty in cutting can be reduced, correspondingly, the precision requirement and the debugging difficulty of cutting equipment can also be reduced, and the equipment cost and the labor cost can be saved.

In some possible embodiments, the membrane assembly is made of a first protective membrane, an optical membrane and a second protective membrane, which are sequentially attached to each other, so that the first protective membrane is connected to the second carrier film, and the second protective membrane is connected to the first carrier film;

the bonding force between the first bearing film and the second protective film is larger than the bonding force between the second protective film and the optical film;

and enabling the bonding force between the second bearing film and the first protection film to be larger than the bonding force between the first protection film and the optical film.

Therefore, the first protective film and the second protective film can be smoothly peeled off from the optical film under the action of the first carrier film and the second carrier film in the subsequent use of the optical film roll.

In some possible embodiments, the first carrier film and the second carrier film are both made of an adhesive film.

In some possible embodiments, the web is made of a first protective film, an optical film and a second protective film, which are arranged in succession; the cutting of the web to obtain a plurality of film sheet assemblies comprises:

cutting off the first protective film and the optical film along the cutting position in sequence to correspondingly obtain a first protective film and an optical film;

and synchronously uncovering the first protective film and the optical film from the second protective film to obtain the film assembly.

In some possible embodiments, the first carrier film is made of a protective film and the second carrier film is made of an adhesive film; or

The first bearing film is made of an adhesive film, and the second bearing film is made of a protective film.

In some possible embodiments, the cutting the web to obtain a plurality of film sheet assemblies further comprises:

typesetting on the roll to determine the cutting location for each of the membrane assemblies.

In addition, the application also provides an optical film coiled material which is prepared based on the optical film coiled material processing method. Therefore, in the processing process of the optical film coiled material, the waste of materials can be reduced, and the yield of the coiled material unit area membrane assembly can be improved.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 shows a schematic diagram of a prior art roll;

FIG. 2 is a schematic diagram showing a prior art structure for slitting a material roll into a plurality of sub-rolls;

FIG. 3 illustrates a layout diagram of a prior art cut sheet assembly on a sub-roll;

FIG. 4 is a schematic cross-sectional view of a sheet assembly of the prior art;

FIG. 5 illustrates a schematic flow chart of a method of processing an optical film web in some embodiments of the present application;

FIG. 6 illustrates a schematic flow diagram of a cut film sheet assembly in some embodiments of the present application;

FIG. 7 is a diagram illustrating layout structures of rolls in some embodiments of the present application;

FIG. 8 shows a schematic partial structure of an optical film in some embodiments of the present application;

FIG. 9 illustrates a schematic diagram of a cutting configuration when cutting a membrane assembly according to some embodiments of the present application;

FIG. 10 is a schematic flow chart illustrating the transfer of a membrane module to two carrier films according to some embodiments of the present disclosure;

FIG. 11 is a schematic cross-sectional view of a membrane assembly and a first carrier film according to some embodiments of the present disclosure;

FIG. 12 is a schematic view of the arrangement of the membrane module on the first carrier film according to some embodiments of the present disclosure;

FIG. 13 is a schematic drawing showing a partial cross-sectional structure of a roll of optical film in some embodiments of the present application;

FIG. 14 illustrates a schematic view of an optical film web in use in some embodiments of the present application;

FIG. 15 is a schematic flow chart illustrating a method of processing a web of optical film in accordance with further embodiments of the present application;

FIG. 16 is a schematic flow diagram illustrating a cut film sheet assembly according to further embodiments of the present application;

FIG. 17 is a schematic flow chart illustrating the process of transferring a membrane module to two carrier films according to another embodiment of the present application;

FIG. 18 shows a schematic partial cross-sectional view of an optical film web in accordance with other embodiments of the present application.

Description of the main element symbols:

100-material roll; 10-rolls of rolls; 11-a sheet assembly; 12-an empty area; 111-third protective film sheet stock; 112-bright enhancement film sheet stock; 113-a fourth protective film sheet;

200-coiled material; 201-first protection film; 202-an optical film; 2021-prism; 203-a second protective film; 21-a diaphragm assembly; 211-a first protective membrane; 212-an optical film; 213-a second protective membrane; 22-an overlap region; 23-cutting; 31-a first carrier film; 32-a second carrier film; 40-clearance; 50-guide rollers.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 7 and 9, a cartesian coordinate system is established defining the length direction of the web 200 parallel to the direction indicated by the x-axis, the width direction of the web 200 parallel to the direction indicated by the y-axis, and the material thickness direction of the web 200 parallel to the direction indicated by the z-axis. It is to be understood that the above definitions are merely for ease of understanding the relative positional relationship of the various portions of the web 200 and should not be construed as limiting the present application.

The brightness enhancement film is used as an important optical film in the backlight module, and can converge light generated by the backlight source, so that the brightness of the display panel in a terminal product is improved. The terminal product can be one of products such as a tablet personal computer, a palm computer, a mobile phone, a reader, a display screen and an intelligent watch.

As shown in fig. 1 and fig. 4, in the production process of the conventional brightness enhancement film, a prism structure needs to be first fabricated on one surface of the brightness enhancement film substrate, in this process, in order to facilitate fabrication and improve production efficiency, the brightness enhancement film substrate having a certain width is usually fabricated, so as to obtain a full-width material roll 100, the width of the material roll 100 is generally set to 1050mm or 1100mm, etc., and the width of the material roll 100 can be set parallel to the y axis. Meanwhile, the same prism structure may extend along the width direction of the brightness enhancement film substrate, that is, the width direction of the roll 100.

It can be understood that, in the material roll 100, the two sides of the bright enhancement film are respectively covered with a layer of protective film, namely a third protective film and a fourth protective film, and the protective films on the two sides can correspondingly protect the bright enhancement film, so that the bright enhancement film is prevented from being worn or damaged in the storage and transportation processes.

As shown in fig. 2 and 3, the roll 100 may then be cut according to the design requirements of the backlight module in the end product to obtain the sheet material assembly 11 with the corresponding specification. The sheet material assembly 11 may include a third protective film sheet material 111, a light-adding film sheet material 112 and a fourth protective film sheet material 113 which are laminated in this order. It is understood that the specification of the sheet material assembly 11 can be adapted to the backlight module, and the specification of the sheet material assembly 11 can include the size of the sheet material assembly 11, the angle of arrangement of the prism structures on the brightness enhancement film sheet material 112, and the like.

As shown in fig. 1 to 4, in the conventional cutting process, a full-width material roll 100 is first cut according to the size of the bright enhancement film sheet material 112 required in the backlight module. Specifically, the material roll 100 may be divided along the width direction of the material roll 100 to cut the material roll 100 into a plurality of sub-rolls 10, the width of the sub-roll 10 corresponds to the specification of the desired bright enhancement film sheet material 112, a row of bright enhancement film sheet materials 112 may be cut along the length direction of one sub-roll 10, that is, the width of one sub-roll 10 may correspond to the width of one row of bright enhancement film sheet materials 112, and the width direction of the sub-roll 10 may be parallel to the width direction of the material roll 100.

Subsequently, the sub-roll 10 is cut according to the size of the sheet material assembly 11 and the arrangement angle of the prism structure on the brightness enhancement film sheet material 112 to obtain the corresponding sheet material assembly 11. It will be appreciated that the width of the sub-roll 10 may be slightly larger than the dimension of the assembly of sheet material 11 along the width of the sub-roll 10 to facilitate cutting of the assembly of sheet material 11.

Referring to fig. 3, after the cutting is completed, along the width direction of the sub-roll 10, a plurality of empty areas 12 are left on both sides of the sub-roll 10, and a corresponding empty area 12 is left between any two adjacent sheet assemblies 11. However, the bright enhancement film in the vacant area 12 cannot be used and is discarded as waste, which results in a large waste of cost. At the same time, the unit area material roll 100 can produce a smaller number of sheet material assemblies 11, i.e. a lower output.

The present application provides a method for processing an optical film roll, which can reduce the waste of the optical film 202 and increase the yield of the film assembly 21 per unit area of the roll 200.

Example one

As shown in fig. 5 and 7, in an embodiment, the optical film roll processing method may include the steps of:

s10, cutting the web 200 to obtain a plurality of film sheet assemblies 21, and at least partially overlapping the projections of the cutting positions 23 of two adjacent film sheet assemblies 21 on the width of the web 200 in the direction parallel to the width of the web 200.

The web 200 may be a roll 100, i.e. having a full width, and accordingly, the width of the web 200 may be set to 1050mm or 1100mm, etc., as required. As shown in fig. 9, in an embodiment, the roll 200 may be made of a first protective film 201, an optical film 202, and a second protective film 203, which are sequentially attached to each other, and the first protective film 201 and the second protective film 203 may protect the optical film 202, so as to prevent the optical film 202 from being damaged during storage, transportation, and the like, and also ensure the cleanliness of the surface of the optical film 202, and prevent dust from being attached.

As shown in fig. 8, in some embodiments, the optical film 202 may be a brightness enhancement film, and a surface of the optical film 202 is provided with prisms 2021, and the extending direction of the prisms 2021 may be parallel to the width direction of the web 200. In some specific embodiments, the first protective film 201 is located on the side of the optical film 202 where the prism 2021 is disposed. Of course, the second protective film 203 may be provided on the side of the optical film 202 on which the prism 2021 is provided.

In other embodiments, the optical film 202 may also be an optical film structure such as an antireflection film.

As shown in fig. 6, in some embodiments, cutting the web 200 to obtain a plurality of film sheet assemblies 21 may specifically include:

s101, typesetting is performed on the coiled material 200 to determine the cutting positions 23 of the membrane assemblies 21.

Specifically, as shown in fig. 7 and fig. 8, the optical film 212 may be typeset according to the specification of the optical film 212 required by the backlight module of the end product, and the specification of the optical film 212 may include the size of the optical film 212, the arrangement angle of the prism 2021 in the optical film 212, and the like. Here, the setting angle of the prism 2021 may refer to an included angle β between the extending direction of the prism 2021 and the axis m in the length direction of the optical film 212, and the setting angle β of the prism 2021 may be set to 0 ° < β <90 °, and exemplarily, the setting angle β of the prism 2021 in the optical film 212 may be set to 30 °, 45 °, 60 °, and the like.

In the web 200, the extending direction of the prisms 2021 on the surface of the optical film 202 is generally parallel to the width direction of the web 200, and accordingly, to obtain the optical film sheet 212 having the prism arrangement angle β, the cutting position 23 may be inclined with respect to the width direction of the web 200 such that the included angle between the axis m of the optical film sheet 212 and the prisms 2021 on the surface of the optical film 202 is set to β.

In some embodiments, the cutting bits 23 may be arranged on the web 200 in an array, that is, the web 200 may be provided with a plurality of rows and columns of cutting bits 23, wherein the cutting bits 23 in the same row may extend along the width direction of the web 200, and the cutting bits 23 in the same column may extend along the length of the web 200.

In some embodiments, the cutting sites 23 of the same column may be arranged parallel to each other along the length of the web 200, as shown in FIG. 7. The cutting sites 23 in the same row may also be arranged parallel to each other along the width of the web 200.

In some embodiments, the projections of any two adjacent cutting locations 23 on the width of the web 200 at least partially overlap in a direction parallel to the width of the web 200, i.e., the projections of two adjacent cutting locations 23 on the width of the web 200 have a portion of the overlap area 22.

Accordingly, in the same row of cutting positions 23, the vacant areas 12 between two adjacent cutting positions 23 can be utilized by the adjacent row of cutting positions 23, i.e. the optical film 202 in the vacant areas 12 can be utilized. Therefore, the waste of the optical film 202 can be avoided, and the material cost can be saved. At the same time, the number of film sheet assemblies 21 produced per unit area of web 200 may be increased, i.e., the production per unit area may be increased. For example, when the coiled material 200 with the whole width of 1050mm is cut, the optical film coiled material processing method provided by the application can improve the yield by about 40% compared with the traditional process; in the conventional cutting process, the web 200 is cut into five sub-webs 10, and the prism 2021 is disposed on the optical film 212 at an angle of 45 °.

In other embodiments, the projections of any two adjacent cutting locations 23 on the length of the web 200 may at least partially overlap in a direction parallel to the length of the web 200, i.e., the projections of two adjacent cutting locations 23 on the length of the web 200 have a portion of the overlap area 22. Thus, in the same row of cutting locations 23, the optical film 202 in the vacant area 12 between two adjacent cutting locations 23 can also be utilized by the adjacent row of film sheet assemblies 21.

Of course, in other embodiments, the projections of any two adjacent cutting locations 23 across the width of the web 200 at least partially overlap in a direction parallel to the width of the web 200. Meanwhile, projections of any two adjacent cutting sites 23 on the length of the web 200 may at least partially overlap in a direction parallel to the length of the web 200.

In some embodiments, a gap is left between two adjacent cutting positions 23 in the same row, that is, two adjacent cutting positions 23 are not communicated, so as to facilitate smooth cutting at the position of each cutting position 23. The width n of the gap can be set to be smaller size such as 0.8mm, 1mm, 1.2mm, 1.5mm, 2mm and the like according to the requirement. Gaps can be reserved between two adjacent cutting positions 23 in the same row, and the size of the gaps can be set to be smaller sizes such as 0.8mm, 1mm, 1.2mm, 1.5mm and 2mm, so that the cutting can be carried out smoothly.

And S102, cutting along the cutting position 23 to obtain the membrane assembly 21.

In some embodiments, as shown in fig. 9 and 11, a knife may be inserted along the edge of the cutting position 23 from the side of the first protective film 201 away from the optical film 202 to the side of the second protective film 203 away from the optical film 202. That is, the first protective film 201, the optical film 202, and the second protective film 203 at the corresponding positions are cut in order.

Specifically, in some embodiments, the membrane module 21 may include a first protective membrane 211, an optical membrane 212, and a second protective membrane 213, wherein the first protective membrane 211 and the second protective membrane 213 are respectively disposed on two sides of the optical membrane 212 and are respectively attached to the corresponding sides of the optical membrane 212.

It is understood that the first protective film 211 may be obtained by cutting the first protective film 201 along the edge of the cutting location 23, the optical film 212 may be obtained by cutting the optical film 202 along the edge of the cutting location 23, and the second protective film 213 may be obtained by cutting the second protective film 203 along the edge of the cutting location 23. Accordingly, when the web 200 is cut, the web 200 may be directly cut through in the thickness direction of the material to obtain the corresponding film assembly 21.

As shown in fig. 4, in the conventional process, when cutting the sheet material assembly 11 on the sub-roll 10, only the third protective film and the bright enhancement film are usually cut, while the fourth protective film is uncut, i.e. the cutting knife cuts from the side of the third protective film away from the bright enhancement film to the side of the bright enhancement film close to the fourth protective film. Meanwhile, the thicknesses of the third protective film, the bright enhancement film and the fourth protective film are generally less than 1 mm. When the sub-roll 10 is cut to obtain the sheet material assembly 11, the cutting depth of the cutter needs to be strictly controlled, so that the problem that the fourth protective film is cut or the bright enhancement film is not cut off is avoided. Therefore, the traditional process has high cutting requirements and can be finished by cutting equipment with high precision, correspondingly, the debugging difficulty of the cutting equipment is high, and the equipment cost and the labor cost are increased undoubtedly. In addition, inevitable in the conventional process, some sheet material assemblies 11 which are not cut off, such as the bright enhancement film is not cut off or the fourth protection film is cut off, may still be present during the cutting process, so that the product yield is reduced.

Referring to fig. 9, in the present application, when the web 200 is cut to obtain the film assembly 21, the first protective film 201, the optical film 202 and the second protective film 203 are sequentially cut, i.e., the web 200 is directly cut through along the material thickness direction. During cutting, the cutting blade is controlled to cut the coiled material 200 through, so that the requirement for the cutting depth precision is obviously reduced compared with the traditional process. Correspondingly, the requirement on cutting equipment is also obviously reduced, the debugging difficulty is also reduced, and the equipment and labor cost can be obviously saved. In addition, the coiled material 200 is directly cut through, and compared with the traditional process, the occurrence of poor membrane assemblies 21 can be greatly avoided, so that the yield of products can be obviously improved.

S11, transferring the membrane modules 21 between two carrier films.

As shown in fig. 10, in some embodiments, the transferring the plurality of membrane modules 21 between two carrier films may specifically include:

s111, sequentially moving the plurality of membrane modules 21 to one side of the first carrier film 31, and connecting the membrane modules 21 and the first carrier film 31, as shown in fig. 11.

In some embodiments, the cut film assemblies 21 can be sequentially moved from the position of the roll 200 to the same side of the first carrier film 31 by a robot having suction cups, and the second protective film 213 in the film assembly 21 is connected to the first carrier film 31.

Referring to fig. 12 and 13, in an embodiment, the plurality of membrane modules 21 may be disposed in a single row along the length direction of the first carrier film 31, and a gap 40 may be disposed between two adjacent membrane modules 21, so that when the plurality of membrane modules 21 are sequentially connected to the first carrier film 31, the membrane modules 21 on the first carrier film 31 are prevented from being damaged. In some embodiments, the axis m of the membrane assembly 21 may form an angle β with the width direction of the first carrier film 31, even if the membrane assembly 21 is disposed obliquely with respect to the first carrier film 31.

Of course, in other embodiments, the axis m of the membrane module 21 may be parallel to the width of the first carrier film 31.

In other embodiments, a plurality of membrane modules 21 may be arranged on one side of the first carrier film 31 in multiple rows.

In some embodiments, the second protective film 213 of the film assembly 21 may be bonded to the first carrier film 31. The first carrier film 31 may be directly made of an adhesive film, and for example, the first carrier film 31 may be made of one of an O-phenylphenol (OPP) adhesive film, a Polyethylene terephthalate (PET) adhesive film, a Polyethylene (PE) adhesive film, and the like. Accordingly, the membrane assembly 21 may be located on the side of the first carrier film 31 where the glue layer is disposed, and the second protective membrane 213 is bonded to the glue layer of the first carrier film 31.

In other embodiments, the first carrier film 31 may also be made of one of PET film, PE film, and other film materials, and the bonding may be achieved by coating glue or adhering double-sided adhesive tape between the second protective film 213 and the first carrier film 31.

Of course, in other embodiments, the connection of the second protective film 213 and the first carrier film 31 by welding, magnetic attraction, etc. is not excluded.

And S112, covering a second carrier film 32 on one side of the plurality of membrane assemblies 21 departing from the first carrier film 31, and connecting the second carrier film 32 with the membrane assemblies 21.

In some embodiments, the second carrier film 32 may be adhered to a side of the membrane module 21 away from the first carrier film 31, and specifically, the second carrier film 32 may be adhered to a side of the first protective film 211 away from the optical membrane 212. In the embodiment, the second carrier film 32 can be one of an OPP film, a PET film, a PE film, and the like. It is understood that the side of the second carrier film 32 provided with the glue layer is disposed adjacent to the first protective film 211 so as to adhere the second carrier film 32 to the first protective film 211.

In other embodiments, the second carrier film 32 may also be directly made of one of PET film, PE film, and other film materials, and the bonding may be achieved by spreading glue between the first protective film 211 and the second carrier film 32 or pasting double-sided tape.

In other embodiments, the second carrier film 32 can be connected to the first protective film 211 of the diaphragm assembly 21 by welding, magnetic attraction, or the like.

It can be understood that, with diaphragm assembly 21 switching between two carrier films, on the one hand, can conveniently form a coiled material with a plurality of diaphragm assembly 21, convenient storage and transportation, on the other hand also can carry out further protection to diaphragm assembly 21 by the carrier film, avoids diaphragm assembly 21 to damage at the in-process of storage and transportation.

And S12, rolling.

Specifically, after the membrane assembly 21 is transferred between two carrier films, the carrier films can be gradually rolled to form corresponding optical film rolls, so as to facilitate subsequent storage and transportation.

As shown in fig. 14, the optical film sheets 212 in the optical film roll are individually loaded into the corresponding backlight units at the time of subsequent use of the optical film roll. Specifically, the optical film roll may pass between two guide rollers 50, and the first carrier film 31 and the second carrier film 32 may be wound around the guide rollers 50 on the corresponding sides, respectively. In operation, the guide roller 50 can rotate, and the first carrier film 31 and the second carrier film 32 can move away from the optical film 212 under the driving of the guide roller 50. Under the driving of the first carrier film 31 and the second carrier film 32, the first protective film 211 and the second protective film 213 can be gradually peeled off from the optical film 212, i.e. the optical film 212 is exposed, thereby facilitating the subsequent installation of the optical film 212 into the corresponding backlight module.

In some embodiments, the bonding force between the first carrier film 31 and the second protective film 213 may be greater than the bonding force between the second protective film 213 and the optical film 212. Specifically, the adhesion between the first carrier film 31 and the second protective film 213 may be greater than the adhesion between the second protective film 213 and the optical film 212. Therefore, the second protective film 213 can be smoothly peeled off from the optical film 212 by the first carrier film 31.

Similarly, the bonding force between the second carrier film 32 and the first protective film 211 may be greater than the bonding force between the first protective film 211 and the optical film 212. Specifically, the adhesion between the second carrier film 32 and the first protective film 211 may be greater than the adhesion between the first protective film 211 and the optical film 212. Under the driving of the second carrier film 32, the first protection film 211 can be smoothly peeled off from the optical film 212.

Example two

As shown in fig. 15, an embodiment provides a method for processing an optical film web, which may include the steps of:

s20, cutting the web 200 to obtain a plurality of film sheet assemblies 21, and at least partially overlapping the projections of the cutting positions 23 of two adjacent film sheet assemblies 21 on the width of the web 200 in the direction parallel to the width of the web 200.

As shown in fig. 16, in some embodiments, step S20 may include:

at S201, typesetting is performed on the web 200 to determine the cutting locations 23 of each film sheet assembly 21. Step S201 is the same as step S101 in the first embodiment, and is not described in detail here.

S202, cutting along the cutting position 23 to obtain the membrane assembly 21.

In some embodiments, the edge of the cutting position 23 may be cut from the side of the first protective film 201 facing away from the optical film 202 to the side of the optical film 202 facing away from the first protective film 201. That is, the first protective film 201 and the optical film 202 at the corresponding positions are sequentially cut, and the second protective film 203 at the corresponding positions may be uncut to obtain the corresponding first protective film piece 211 and the optical film piece 212.

As shown in fig. 18, step S20 further includes:

s203, the first protective film 211 and the optical film 212 are removed from the second protective film 203 simultaneously to obtain the corresponding film assembly 21.

In an embodiment, the film assembly 21 may include a first protective film 211 and an optical film 212, and the first protective film 211 may be correspondingly attached to a side of the optical film 212 where the prism 2021 is disposed.

S21, transferring the membrane modules 21 between two carrier films.

As shown in fig. 17 and 18, in some embodiments, step S21 may specifically include:

s211, sequentially moving the plurality of membrane modules 21 to one side of the first carrier film 31, and connecting the membrane modules 21 and the first carrier film 31.

In some embodiments, the first carrier film 31 may be made of a protective film of the optical film 202. Accordingly, in the membrane module 21, a side of the optical membrane 212 facing away from the first protective film 211 is attached to the first carrier film 31, and the optical membrane 212 is adhesively connected to the first carrier film 31.

S212, covering the second carrier film 32 on the side of the membrane module 21 away from the first carrier film 31, and connecting the second carrier film 32 with the membrane module 21. Specifically, step S212 may be the same as step S112 in the first embodiment, and is not repeated herein.

In other embodiments, the first carrier film 31 may be made of an adhesive film, and one side of the first protective film 211 away from the optical film 212 may be adhered to the first carrier film 31. Subsequently, a second carrier film 32 is coated on the side of the optical film sheet 212 facing away from the first protective film sheet 211, and the second carrier film 32 may be made of a protective film of an optical film.

And S22, rolling. In an embodiment, the step S22 can be the same as the step S12 in the first embodiment, and is not repeated here.

EXAMPLE III

Also provided in the examples is an optical film web that can be made based on the optical film web processing methods provided in the examples.

In an embodiment, as shown in fig. 13, the optical film roll may include a first carrier film 31, a second carrier film 32, and a plurality of film assemblies 21, wherein the plurality of film assemblies 21 may be disposed between the first carrier film 31 and the second carrier film 32 in a single row, and the film assemblies 21 are respectively connected to the first carrier film 31 and the second carrier film 32.

In some embodiments, the membrane assembly 21 may include a first protective membrane 211, an optical membrane 212, and a second protective membrane 213, which are sequentially disposed in close proximity. One side of the first protective film 211 facing away from the optical film 212 is bonded to the second carrier film 32. The side of the second protective film 213 facing away from the optical film 212 is bonded to the first carrier film 31. The first carrier film 31 and the second carrier film 32 may be adhesive films.

In some embodiments, the bonding force between the first carrier film 31 and the second protective film 213 may be greater than the bonding force between the second protective film 213 and the optical film 212. The bonding force between the second carrier film 32 and the first protective film 211 may be greater than the bonding force between the first protective film 211 and the optical film 212. Therefore, in the subsequent use of the optical film roll, the first protective film sheet 211 and the second protective film sheet 213 can be smoothly peeled off from the optical film sheet 212 by the driving of the first carrier film 31 and the second carrier film 32.

In other embodiments, the membrane module 21 may include the first protective film 211 and the optical membrane 212 disposed in a fitting manner. The side of the first protective film 211 facing away from the optical film 212 may be adhered to the second carrier film 32. The side of the optical film 212 facing away from the first protective film 211 may be adhered to the first carrier film 31. The first carrier film 31 may be a protective film of the optical film 202, and the second carrier film 32 may be an adhesive film.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (8)

1. An optical film coil processing method is characterized by comprising the following steps:

cutting the coiled material to obtain a plurality of membrane assemblies;

in the direction parallel to the width direction of the coiled material, enabling the projections of the cutting positions of two adjacent membrane assemblies on the width direction of the coiled material to at least partially overlap; and/or

At least partially overlapping projections of the cutting positions of two adjacent membrane assemblies on the length of the coiled material in a direction parallel to the length of the coiled material;

the optical film coil processing method further comprises the following steps:

sequentially connecting a plurality of membrane assemblies to a first bearing membrane in a rotating manner;

and covering a second bearing film on one side of the membrane assemblies departing from the first bearing film.

2. The optical film roll processing method according to claim 1, wherein the roll is made of a first protective film, an optical film, and a second protective film which are laminated in this order;

the cutting the roll to obtain a plurality of membrane assemblies includes sequentially cutting the first protective film, the optical film, and the second protective film along the cutting station.

3. The optical film roll processing method according to claim 2, wherein the film assembly is made of a first protective film, an optical film and a second protective film, which are sequentially laminated, such that the first protective film is connected to the second carrier film and the second protective film is connected to the first carrier film;

the bonding force between the first bearing film and the second protective film is larger than the bonding force between the second protective film and the optical film;

and enabling the bonding force between the second bearing film and the first protection film to be larger than the bonding force between the first protection film and the optical film.

4. The optical film roll processing method according to claim 2 or 3, wherein the first carrier film and the second carrier film are both made of an adhesive film.

5. The optical film roll processing method according to claim 1, wherein the roll is made of a first protective film, an optical film, and a second protective film which are laminated in this order; the cutting of the web to obtain a plurality of film sheet assemblies comprises:

cutting off the first protective film and the optical film along the cutting position in sequence to correspondingly obtain a first protective film and an optical film;

and synchronously uncovering the first protective film and the optical film from the second protective film to obtain the film assembly.

6. The optical film roll processing method according to claim 5, wherein the first carrier film is made of a protective film and the second carrier film is made of an adhesive film; or

The first bearing film is made of an adhesive film, and the second bearing film is made of a protective film.

7. The optical film web processing method of claim 1, wherein said slitting the web to obtain a plurality of film sheet assemblies further comprises:

typesetting on the roll to determine the cutting location for each of the membrane assemblies.

8. An optical film roll produced by the optical film roll processing method according to any one of claims 1 to 7.

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