TW201819249A - Packing method for optical film, packing box using the same and fixing device - Google Patents

Abstract

A packing method for several optical films, a packing box using the same and a fixing device are provided. The packing method includes the following steps. Firstly, a fixing device is provided, wherein the fixing device includes a flat bottom plate and a blocking plate movably connected to the flat bottom plate. Then, the fixing device is placed within a carrying box. Then, the optical films are placed on the flat bottom plate of the fixing device. Then, the blocking plate is operated to approach a lateral surface of the optical films. Then, a cover is disposed above the optical films. Then, the fixing device, the optical films, the carrying box and the cover are disposed within a box body.

Description

Packaging box of optical film, packaging method thereof and fixing device thereof

The invention relates to a packaging box, a packaging method and a fixing device thereof, and in particular to a packaging box of an optical film, a packaging method and a fixing device thereof.

As shown in FIG. 1, after the optical film 10 'is manufactured, a plurality of optical films 10' are usually stacked together, and then placed in a packaging box 160 '. The optical film 10 'is a thin film structure, which is easily damaged during packaging, or even damaged by external force after packaging.

If it is to be placed as shown in FIG. 2, the lower side of the optical film 10 'will be squeezed and deformed by the weight of the upper side. Therefore, the traditional optical film packaging method cannot provide stability and increase the number of optical film packages.

Therefore, there is an urgent need to propose a new packaging technology to improve the aforementioned conventional problems.

Therefore, the present invention provides a packaging box for an optical film, a packaging method thereof, and a fixing device thereof, which can improve the conventional problems.

According to an embodiment of the present invention, a packaging method for an optical film is provided. The packaging method includes the following steps. A fixing device is provided. The fixing device includes a bottom plate and at least two baffles, wherein the baffles are movably connected to the bottom plate stop; the positions of the baffles on the bottom plate are adjusted according to the size of several optical films; The optical film is on the bottom plate, and the baffles abut against at least two sides of the optical films; and a fixing device is placed in a carrying box.

According to another embodiment of the present invention, a fixing device for an optical film is provided. The fixing device of the optical film includes a bottom plate and at least two baffles. The bottom plate is used to carry several optical films. The at least two baffles can be movably connected to the bottom plate according to the size of the optical films, and are used to abut at least two sides of the optical films.

According to another embodiment of the present invention, a fixing device for an optical film is provided. The fixing device of the optical film includes a bottom plate and a baffle. The bottom plate is used to carry several optical films. The baffle is connected to the bottom plate to abut one side of these optical films. There is a fold line between the baffle and the bottom plate, and the baffle can be turned along the fold line in a direction close to or away from the bottom plate.

According to another embodiment of the present invention, a packaging box for an optical film is provided. The packing box includes a fixing device, a carrying box, a cover and a packing box. The carrying box is used for carrying the fixing device. The cover is disposed on the carrier box and is docked with the carrier box. Wherein, the carrier box that is docked with the cover is arranged inside the packing box.

In order to have a better understanding of the above and other aspects of the present invention, the preferred embodiments are hereinafter described in detail with the accompanying drawings, as follows:

The following illustrates the process diagram of a method for packaging an optical film according to an embodiment of the present invention. However, the steps described below are not intended to limit the embodiments of the present invention, and they can be replaced arbitrarily according to actual conditions.

Figures 3A (a) to 3J show process diagrams of a packaging method for an optical film 10 according to an embodiment of the present invention.

First, as shown in FIGS. 3A (a) and 3A (b), FIG. 3A (a) shows a schematic diagram of an optical film 10 surrounded by a surrounding member 110 according to an embodiment of the present invention, and FIG. 3A (b) A top view of the optical film 10 and the surrounding member 110 shown in FIG. 3A (a) is shown. As shown in the figure, several optical films 10 are surrounded by a surrounding member 110. The optical film 10 is, for example, a polarizing film, a reflective film, a diffusion film, a light enhancement film, or other types of single or multilayer optical films. This is the limit.

The surrounding member 110 in this embodiment is, for example, a belt, which may be, for example, a polyethylene terephthalate (PET) film coated with a release agent on its surface, or, for example, but not limited to, silicone release. (SP) film. In detail, in this step, a surrounding member 110a may surround the upper surface 10u, the first side surface 10s1, the lower surface 10b, and the second side surface 10s2 of the optical films 10. The first side surface 10s1 and the second side surface 10s2 are opposite to each other. Then, the upper surface 10u, the third side surface 10s3, the lower surface 10b, and the fourth side surface 10s4 of these optical films 10 are surrounded by another surrounding member 110b. The third side surface 10s3 and the fourth side surface 10s4 are opposite to each other. Binding these optical films 10. In other words, the optical films 10 can be bundled in a crosswise manner by two bands, as shown in FIG. 3A (b), the optical films 10 can be prevented from being scattered. In another embodiment, the optical film 10 may be surrounded and bundled by one of the surrounding member 110a and the surrounding member 110b, and the embodiment of the present invention is not limited thereto.

As shown in FIGS. 3B (a) and 3B (b), a carrier box 120 is provided. FIG. 3B (a) illustrates an external view of a carrier box 120 according to an embodiment of the present invention, and FIG. 3B (b) illustrates a top view of the carrier box 120 according to FIG. 3B (a). The carrying box 120 includes a carrying surface 121, a first side wall 122, a second side wall 123, a third side wall 124, and a fourth side wall 125. The first side wall 122, the second side wall 123, the third side wall 124, and the fourth side wall 125 are connected to Bearing surface 121.

In one embodiment, the carrier box 120 further includes a flange 126 connected to the first side wall 122, the second side wall 123, the third side wall 124 and the fourth side wall 125. The flange 126 extends outward from these side walls, which is convenient for users to carry.

In one embodiment, the carrier box 120 further includes at least one first engaging portion 127 and at least one second engaging portion 128. In addition, the flange 126 includes a first flange 1261, a second flange 1262, a third flange 1263, and a fourth flange 1264. The first flange 1261, the second flange 1262, the third flange 1263, and the first flange 1264. The four flanges 1264 are connected to the first sidewall 122, the second sidewall 123, the third sidewall 124, and the fourth sidewall 125, respectively. The first engaging portion 127 and the second engaging portion 128 are respectively disposed on two opposite flanges. For example, the first engaging portion 127 and the second engaging portion 128 are respectively disposed on the third flange 1263 and the fourth flange 1264 opposite to each other. In an embodiment, the first engaging portion 127 is, for example, one of a concave portion and a convex portion, and the second engaging portion 128 is, for example, the other of a concave portion and a convex portion. In this way, after a carrier box 120 is turned 180 degrees, the second engaging part (for example, a concave part) of the opposite carrier box 120 can be engaged by the first engaging part 127 (for example, a convex part), and by The second engaging portion 128 (eg, a concave portion) is engaged with the first engaging portion 127 (eg, a convex portion) of the opposite carrying box 120.

In one embodiment, the carrier box 120 further has at least one groove 120r, which is substantially located at at least one corner of the carrier box 120 (that is, the connection between two adjacent side walls), which can prevent the optical placed thereon. The corners of the film 10 (ie, the junction of two adjacent sides) are pressed by the side walls of the carrier box 120.

As shown in FIG. 3C, a fixing device 130 is provided. The fixing device 130 includes a bottom plate 131 and at least one baffle. The baffle and the bottom plate 131 are relatively movable. The bottom plate 131 is, for example, a flat bottom plate. The bottom plate 131 has at least one groove 131r, and each baffle is slidably disposed in the corresponding groove 131r. In this embodiment, the number of the baffles is, for example, four, such as the baffle 132, the baffle 133, the baffle 134, and the baffle 135, and the grooves 131r have corresponding numbers, but the embodiment of the present invention is not limited thereto. . In this embodiment, the materials of the bottom plate 131 and the baffle are, for example, plastic, acrylic, glass, cardboard, or metal.

With regard to the structure of one of the baffles 132, in one embodiment, as shown in the enlarged view of FIG. 3C, for each side of the bottom plate 131 of the fixing device 130, a plurality of first fixing holes 131a are located. On both sides of the groove 131r, the first fixing holes 131a extend along the direction D1 perpendicular to the side of the bottom plate, whereby the baffle 132 can be fixed to the first fixing holes 131a according to the size of the optical film 10. One of the positions, and abuts and fixes the optical film 10.

In one embodiment, the baffle 132 has a second fixing hole 132 a, and the fixing device 130 further includes at least one fixing member 136. The fixing member 136 passes through one of the first fixing holes 131 a and the second fixing holes 132 a to fix the relative positions of the bottom plate 131 and the baffle 132.

Since the number of the first fixing holes 131a is plural, when the fixing member 136 passes through the first fixing holes 131a and the second fixing holes 132a at different positions, the baffle 132 can be fixed at different positions. In this way, the baffle 132 is adjustable, so that the fixing device 130 can fix the optical films 10 of different sizes. The connection methods of the other baffles 132 and the bottom plate 131 are similar to the aforementioned connection methods of the baffle 132 and the bottom plate 131, and are not repeated here.

In addition, the baffle 132 includes a bottom portion 1321, a side portion 1322, and a fixing portion 1323. The bottom portion 1321 and the fixing portion 1323 are respectively connected to two opposite sides of the side portion 1322. In this embodiment, the side portion 1322 and the bottom portion 1321 are connected in an L shape. The bottom portion 1321 is slidably disposed in the corresponding groove 131r, and the driving side portion 1322 abuts on the side of the optical film 10 (shown in FIG. 3E). In addition, the aforementioned second fixing hole 132a may be opened in the fixing portion 1323.

In another embodiment, as shown in FIG. 3C ', it illustrates a schematic diagram of a fixing device 130 according to another embodiment of the present invention. For each side of the bottom plate 131 of the fixing device 130, a first fixing hole 131b is located on both sides of the groove, and the first fixing hole 131b is, for example, an elongated hole. The long axis of the first fixing hole 131b is perpendicular to the side. Thereby, the baffle 132 can be adjusted by moving through the first fixing hole 131 b to the position between the baffle 132 and the optical film 10. When the baffle 132 is moved to a position, the relative position of the baffle 132 and the bottom plate 131 can be fixed by screwing the screws (not shown) of the baffle 132 with the fixing member 136. In this design, the fixing member 136 is, for example, a nut.

In an embodiment, as shown in FIG. 3C '', it illustrates a schematic view of a baffle plate 132 'according to another embodiment of the present invention. The baffle plate 132' itself may have a fixing member 136 '. For example, in addition to the bottom plate 1321, the side portion 1322, and the fixing portion 1323, the baffle plate 132 'further includes two fixing pieces 136'. The two fixing pieces 136 'are fixed to the lower surface of the fixing portion 1323 and pass through the first Fixing hole 131a or 131b. In one embodiment, the fixing member 136 'and the fixing portion 1323 are integrally formed.

As shown in FIG. 3D, the fixing device 130 is placed in the carrying box 120. The bottom plate 131 of the fixing device 130 may abut the first side wall 122, the second side wall 123, the third side wall 124 and the fourth side wall 125 of the carrying box 120 to stabilize the relative position of the fixing device 130 and the carrying box 120. In addition, since the carrying box 120 has a plurality of grooves 120r, it is convenient to take out the fixing device 130 from the carrying box 120.

As shown in FIG. 3E, the optical film 10 shown in FIG. 3A (a) is placed on the bottom plate 131 of the fixing device 130.

Then, the shutters of the fixing device 130 are operated so that the shutters abut the sides of the optical films 10. For example, the baffle 132, the baffle 133 (not shown in FIG. 3E), the baffle 134, and the baffle 135 (not shown in FIG. 3E) may be operated toward the first side surfaces 10s1 of the optical films 10, respectively. The second side 10s2, the third side 10s3, and the fourth side 10s4 move until they abut the first side 10s1, the second side 10s2, the third side 10s3, and the fourth side 10s4 of the optical film 10 to fix the optical films 10 relative positions.

In one embodiment, the optical film 10 can be placed in the fixing device and fixed, and then the fixing device 120 and the optical film 10 can be placed in the carrying box 120. In another embodiment, the fixing device 120 can be placed in the carrier box first, and then the optical film 10 can be placed in the fixing device 120. The invention is not limited to this.

As shown in FIG. 3F, a cover 140 is provided on these optical films 10. The cover 140 is docked with the carrier box 120 to completely protect or seal the optical film 10 between the cover 140 and the carrier box 120. In this embodiment, the structure of the cover 140 may be similar to the carrier box 120 or the carrier box 120. Thereby, the second engaging portion and the first engaging portion on the cover 140 (that is, another supporting box) can be respectively abutted through the first engaging portion and the second engaging portion on the carrier box 120 to The docking of the cover 140 with the carrier box 120 is completed. Therefore, the present invention only needs to provide a structure of a carrying box to complete the effect of sealing and protecting the optical film, and it is not necessary to design and provide another structure to achieve the above-mentioned object.

In another embodiment, the cover 140 may also be a flat plate, which only covers the upper surfaces 10 u of the optical films 10.

Then, the second package bag 150 (the element 150 shown in FIGS. 3H and 3I) is used to cover the surrounding member 110, the carrier box 120, the optical films 10, the fixing device 130, and the cover member 140; The air in the wrapping bag 150 makes the second wrapping bag 150 in a vacuum state, which can isolate the outside air to prevent pollution.

In an embodiment, as shown in FIG. 3G, the packaging structure 100 'of FIG. 3F is disposed between the first wrapping sheet 151 and the second wrapping sheet 152. In one embodiment, the first wrapping sheet 151 and / or the second wrapping sheet 152 are, for example, aluminum foil.

Then, as shown in FIG. 3H, the connection between the first wrapping sheet 151 and the second wrapping sheet 152 is sealed, but an opening 150a is exposed to form a second wrapping bag containing the packaging structure 100 ′ of FIG. 3F. 150. In one embodiment, a second wrapping bag 150 may also be provided to directly load the packaging structure 100 '.

Then, as shown in FIG. 3I, a vacuum source (not shown) may be used to extract the air in the second wrapping bag 150 through the opening 150a, so that the second wrapping bag 150 is deformed and can be closely attached to the carrying box 120 and The cover 140 is configured to reduce the volume of the second wrapping bag 150. As shown in FIG. 3I, at least a part of all outer surfaces of the packaging structure 100 'is closely adhered by the second wrapping bag 150, so that the volume of the packaging structure 100' '' in FIG. 3I is smaller than that shown in FIG. 3H Packaging structure 100 ''.

Then, as shown in FIG. 3I, the opening 150 a in FIG. 3H is closed to maintain the vacuum state in the second wrapping bag 150.

Then, as shown in FIG. 3J, at least one packaging structure 100 ′ ′ as shown in FIG. 3I is placed in the packaging box body 160 to form a packaging box 100.

In this embodiment, the packaging structure 100 '' of FIG. 3I can be placed in the packaging box 160 in a thickness direction (such as the z direction) perpendicular to the ground.

However, the embodiment of the present invention does not limit the orientation in which the packaging structure 100 '' 'of FIG. 3J is placed in the packaging box 160. For example, as shown in FIG. 4, it is a schematic view showing that the packaging structure 100 ′ ′ of FIG. 3I is placed in the packaging box 160 in different orientations. The packaging structure 100 '' of FIG. 3I can be placed in the packaging box 160 in a thickness direction (such as the z direction) parallel to the ground. In this arrangement, as shown in FIG. 4, the bearing surface 121 of the carrying box 120 is substantially perpendicular to the bottom surface 160 b of the packaging box 160. In this way, under the same space of the packaging box body, the number of packaging box bodies (that is, the number of optical films) can be increased in the packaging box body.

Since the fixing device 130 can stabilize the positions of the several optical films 10 in the carrying box 120, the packaging structure 100 '' 'can be placed in the packaging box 160 in any orientation, and even if the packaging structure 100' '' is subjected to a forcing force (Such as dropping or dropping), the optical film 10 in the packaging structure 100 '' 'is still not damaged.

FIG. 5 is a diagram illustrating a packaging process of an optical film 10 according to another embodiment of the present invention. As shown, a plurality of optical films 10 are surrounded by a surrounding member 110 '. The surrounding member 110 'of this embodiment is a first wrapping bag, which has an opening 110c. The optical film 10 can enter the surrounding member 110 'through the opening 110c, and then adhere the opening 110c with tape to prevent the optical film 10 from falling out of the surrounding member 110'. In one embodiment, the first wrapping bag may be a plastic bag, and the material may be made of polyethylene terephthalate, polyethylene, or other materials. Alternatively, the surrounding member 110 'may be a single sheet of film, and its material may be similar to the aforementioned plastic bag. The remaining steps of forming the packaging box 100 in this embodiment may adopt corresponding steps similar to the above-mentioned Figures 3A (a) to 3J, and will not be repeated here.

6A to 6D are diagrams illustrating a packaging process of an optical film 10 according to an embodiment of the present invention.

As shown in FIG. 6A, a fixing device 230 is provided. The fixing device 230 includes a bottom plate 231, at least one baffle plate, and a cover plate 236. In this embodiment, the number of baffles is, for example, four, such as baffles 232, 233, 234, and 235. There is at least one fold line between the bottom plate 231 and each baffle plate, so that each baffle plate can be turned around or away from the bottom plate around the fold line, that is, folded inwardly or outwardly with respect to the flat bottom plate 231. For example, the baffle 232 rotates around the fold line 232g relative to the bottom plate 231, the baffle 233 rotates about the fold line 233g relative to the bottom plate 231, the baffle 234 rotates about the fold line 234g relative to the bottom plate 231, and the baffle 235 rotates about the fold line 235g relative to the bottom plate 231.

The fixing device 230 in this embodiment is formed of a flexible material such as a plastic plate or cardboard. In this way, a fold line is easily formed between the bottom plate 231 and each of the baffles.

The cover plate 236 has at least one slot, such as the slots 236f1, 236f2, 236f3, and 236f4. When the baffle plate of the fixing device 230 is engaged with the gap of the cover plate 236, the relative position of the baffle plate 232 and the cover plate 236 can be stabilized, which will be described later.

As shown in FIG. 6B, the fixing device 230 is placed in the carrying box 120. The bottom plate 231 of the fixing device 230 can abut the first side wall 122, the second side wall 123, the third side wall 124, and the fourth side wall 125 of the carrying box 120 to stabilize the relative position of the fixing device 230 and the carrying box 120.

As shown in FIG. 6C, the optical film 10 shown in FIG. 3A (a) is placed on the bottom plate 231 of the fixing device 230.

As shown in FIG. 6D, a cover plate 236 is placed on these optical films 10.

Then, the baffle of the fixing device 230 is operated so that the baffle engages with the corresponding slot of the cover plate 236. For example, the baffle 232, the baffle 233, the baffle 234, and the baffle 235 can be operated toward the first side 10s1, the second side 10s2, the third side 10s3, and the fourth side 10s4 of the optical films 10, respectively, and then The baffle plate 232, the baffle plate 233, the baffle plate 234, and the baffle plate 235 are respectively engaged with the slits 236f1, 236f2, 236f3, and 236f4 of the cover plate 236 to stabilize the relative positions of the fixing device 230 and the optical film 10. The remaining steps of forming the packaging box 100 in this embodiment may adopt corresponding steps similar to the above-mentioned Figures 3A (a) to 3J, and will not be repeated here.

In summary, the method for packaging the film of the embodiment of the present invention uses a fixing device to fix several optical films to stabilize the relative positions of these optical films in the carrying box. In one embodiment, the fixing device includes a bottom plate and a baffle, wherein the baffle is connected to the bottom plate and is movable relative to the bottom plate. In one embodiment, the baffle is slidably disposed in the groove of the bottom plate. In this way, the baffle can be operated to slide relative to the bottom plate until the baffle abuts the optical films. In another embodiment, the baffle can be folded inwardly or outwardly with respect to the bottom plate around a fold line. In this way, the baffle can be operated to rotate relative to the bottom plate until the baffle snaps into the gap of the cover plate of the fixing device. In this way, the relative position of the optical film in the carrying box can be stabilized. Because the position of the optical film in the carrying box is stable, stable, or difficult to be offset, the packaging structure can be placed in the packaging box in any orientation.

In summary, although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

100‧‧‧Packing box

100 ’, 100’ ’, 100’ ’’ ‧‧‧ package structure

10, 10’‧‧‧ optical film

10u‧‧‧upper surface

10b‧‧‧ lower surface

10s1‧‧‧First side

10s2‧‧‧Second side

10s3‧‧‧ Third side

10s4‧‧‧ Fourth side

110, 110 ’, 110a, 110b‧‧‧ around

110c‧‧‧ opening

120, 220‧‧‧carrying box

120r, 131r‧‧‧ groove

121‧‧‧bearing surface

122‧‧‧ the first side wall

123‧‧‧Second sidewall

124‧‧‧ Third side wall

125‧‧‧ fourth side wall

126‧‧‧ flange

1261‧‧‧First flange

1262‧‧‧Second flange

1263‧‧‧ Third flange

1264‧‧‧Fourth flange

127‧‧‧First engagement section

128‧‧‧Second engagement section

130, 230‧‧‧Fixed devices

131, 231‧‧‧ floor

132, 132 ’, 133, 134, 135, 232, 233, 234, 235‧‧‧ bezel

1321‧‧‧ bottom

1322‧‧‧Side

1323‧‧‧Fixed section

132a‧‧‧Second fixing hole

131a, 131b‧‧‧First fixing hole

136, 136’‧‧‧Fixture

140‧‧‧ Cover

150‧‧‧Second parcel bag

150a‧‧‧ opening

151‧‧‧First package

152‧‧‧Second Package

160, 160’‧‧‧ packing box

160b‧‧‧Bottom Block

232g, 233g, 234g, 235g

236‧‧‧ Cover

236f1, 236f2, 236f3, 236f4

D1‧‧‧ direction

1 and 2 are schematic diagrams showing a conventional packaging optical film. 3A (a) to 3J are diagrams illustrating a packaging process of an optical film according to an embodiment of the present invention. FIG. 4 is a schematic diagram of the packaging structure of FIG. 3I placed in the packaging box in different orientations. FIG. 5 is a diagram illustrating a packaging process of an optical film according to another embodiment of the present invention. 6A to 6D are diagrams illustrating a packaging process of an optical film according to an embodiment of the present invention.

Claims (18)

A packaging method includes: providing a fixing device, the fixing device comprising a bottom plate and at least two baffles, wherein the baffles are movably connected to the bottom plate; and the baffles and the baffle are adjusted according to the size of a plurality of optical films. The position of the bottom plate; placing the optical films on the bottom plate and allowing the baffles to abut at least two sides of the optical films; and placing the fixing device in a carrying box. The packaging method according to item 1 of the scope of patent application, further comprising: docking a cover on the carrier box; and placing the carrier box docked with the cover in a packaging box; wherein the carrier box has a purpose To support the supporting surface of the fixing device, the packaging box has a bottom surface and the supporting box abutting with a cover is disposed on the bottom surface, wherein the supporting surface is substantially perpendicular to the bottom surface. The packaging method according to item 2 of the scope of patent application, wherein the carrier box includes a first engaging portion, the cover includes a second engaging portion, and the step of docking the cover on the carrier includes: The second engaging portion is engaged with the first engaging portion to set the cover on the carrying box. The packaging method according to item 3 of the scope of patent application, wherein the structure of the carrier box and the cover is the same. The packaging method according to item 1 of the patent application scope, wherein the fixing device further includes a cover plate, wherein the cover plate has at least two gaps; the packaging method further includes: placing the cover plate on the optical films; and Operate the baffles and the cover plate so that the baffles are respectively engaged with the gaps. The packaging method according to item 1 of the patent application scope further includes: surrounding the optical films with a surrounding member and / or covering the optical films with a wrapping bag. The packaging method according to item 1 of the scope of patent application, further comprising: covering the carrier box with a parcel bag; and extracting air from the parcel bag to make the parcel bag be in a vacuum state. An optical film fixing device includes: a bottom plate for carrying a plurality of optical films; and at least two baffles, which can be movably connected to the bottom plate according to the size of the optical films, and are used to abut the optical films. At least two sides. The fixing device according to item 8 of the patent application scope, wherein the bottom plate has a plurality of first fixing holes, and one of the baffles is movably fixed to a corresponding one of the first fixing holes. The fixing device according to item 9 of the scope of patent application, wherein the one of the baffles includes a fixing member, and the one of the baffles is fixed to the first fixing holes by the fixing member. The corresponding person. The fixing device according to item 9 of the patent application scope, wherein one of the baffles has a second fixing hole, wherein the fixing device further includes a fixing member, and the fixing member passes through the first fixing holes. The corresponding one and the second fixing hole are used to fix the corresponding baffle on the bottom plate. The fixing device according to item 8 of the scope of patent application, wherein one of the baffles has a screw, the bottom plate has a long hole, and the fixing device further includes a nut, wherein one of the baffles The screw is fixed to the bottom plate by screwing with the nut. An optical film fixing device includes: a bottom plate for carrying a plurality of optical films; and at least two baffles connected to the bottom plate for abutting at least two sides of the optical films; each of the baffles There is a fold line with the bottom plate, and each of the baffles can be turned along the fold line in a direction close to or away from the bottom plate. The fixing device according to item 13 of the scope of patent application, wherein the fixing device further includes a cover plate disposed on the optical films, the cover plate has at least two slits, and the slits are respectively engaged with the baffles. . A packaging box for an optical film, comprising: a fixing device as in the patent application range of 8 to 14; a carrying box for carrying the fixing device; a cover member disposed on the carrying box and docking with the carrying box; and A packing box body; wherein the carrying box docked with the cover is arranged in the packing box body. The packaging box according to item 15 of the scope of patent application, wherein the carrying box has a carrying surface for carrying the fixing device, the packaging box body has a bottom surface, and the carrying box docked with the cover is disposed on the bottom surface , Wherein the bearing surface is substantially perpendicular to the bottom surface. The packing box according to item 15 of the scope of patent application, wherein the carrying box includes a first engaging portion, the cover includes a second engaging portion, and the second engaging portion and the first engaging portion are mutually It engages so that the cover is docked on the carrier box. The packaging box according to item 15 of the scope of patent application, wherein the carrying box has at least one groove, and the at least one groove is located at at least one corner of the carrying box.