JP2020040677A - Film reel package and film reel collected package - Google Patents

Abstract

To provide a film reel collected package which reduces the generation of wear powder during transportation.SOLUTION: A film reel collected package has: a film wound body consisting of a cylindrical core and a film wound on the core; an exterior tube covering the film wound body so as to include the film wound body inside; and a hold member which is disposed at both ends of the core in an axial direction respectively and holds the film wound body. The hold member comprises: a plate-like part; and a support part which is constituted so as to be freely inserted into the inside of an opening which projects from the plate-like part and is formed at an end part of the core in the axial direction. An exterior end part is the end part of the core in the axial direction in the exterior tube. The exterior end part is housed in the opening of the core. The support part is inserted into the opening of the core so that the exterior end part is interposed between the core and the support part. The hold member is attached to the film wound body. The exterior tube is constituted by tube materials of at least three layers laminated via air layers.SELECTED DRAWING: Figure 4

Description

  According to the present invention, a film is wound around a cylindrical core for transporting a long film, and an outer film is covered on a roll of the film, and then a brim (flange) -shaped holding member is inserted into each end of the core. And a film reel assembly package having a plurality of film reel packages.

  When transporting a long film, that is, a web, for example, between two points, the film is wound around a cylindrical core and transported. A paperboard cylinder is often used as the core. A film obtained by winding a film around a cylindrical core is called a film roll. In order to prevent the film from being scratched or adhered with impurities when transporting the wound film, an outer film or an outer sheet is provided to cover the wound film. The exterior film or the exterior sheet may be provided so as to be wound around the wound film, but Patent Document 1 discloses using a tubular exterior film as the exterior film.

  In order to prevent the peripheral surface or side surface of the film winding body from touching the ground or contacting other objects during transportation, the film winding is performed by a pair of brim-like holding members (also referred to as protectors or supporting members). In many cases, a film reel package is formed by sandwiching a rotator. By using the film reel package, it is possible to transport the film wound body suspended in the air while keeping it horizontally. Retaining members used for this purpose are also commercially available. The holding member has a plate-shaped portion which is a thick plate-shaped member, and further, a plug (supporting portion) protruding from the center of the plate-shaped portion so as to engage with an opening at an end of a cylindrical core. Are formed. The holding members can be attached to both ends of the core by inserting the plug into the opening at the end of the core. An example of a holding member having a square shape is disclosed in Patent Document 2. Patent Literature 3 discloses a substantially rectangular parallelepiped transport material that can accommodate a film roll using such a pair of holding members as a pair of wall surfaces. When attaching the holding member to a film wound body covered with a tube-shaped exterior film, for example, the end of the exterior film as a tube is folded and inserted into the opening at the end of the core, and then the opening of the core is opened. It is conceivable to insert a plug of the holding member into the plug. In this case, the exterior film is interposed between the outer periphery of the plug inserted into the opening of the core and the inner wall of the core. In the following description, an exterior film formed in a tube shape is referred to as an exterior tube.

  When transporting a plurality of film reel packages constituted by attaching a holding member to the film winding body, or when transporting a plurality of containers storing the film winding body supported by the holding member, for example, Patent Document As described in 4, a film reel package or a container is stacked on a transport pallet so that the rotation axis of the film roll is horizontal, and further covered with a stretch film to form a film reel assembly package.

JP-A-11-43180 JP 2015-113136 A JP-A-2006-50020 JP-A-2006-175695

  Some films conveyed by the film reel package are used in a clean room or the like, and a roll of film is often carried into the clean room. Therefore, it is necessary to prevent dust from adhering to the film winding body due to dust generation from the film reel package. However, when the film reel package is transported over a long distance, abrasion powder may be generated from the exterior film, the holding member, and the core and adhere to the inner surface of the core. Wear powder attached to the inner surface of the core causes dust generation.

  An object of the present invention is to provide a film reel package in which generation of abrasion powder during transportation is reduced, and a film reel collective package composed of such a film reel package.

  The film reel package of the present invention, a film wound body comprising a cylindrical core and a film wound on the core, an outer tube that covers the film wound body so as to include the film wound body, In a film reel package having holding members that are respectively arranged at both ends in the axial direction of the core and hold the film winding body, the holding member is a plate-shaped portion, and the holding member protrudes from the plate-shaped portion and extends in the axial direction of the core. A support portion configured to be insertable inside an opening formed at the end portion, and the outer end portion is housed in the opening, with the axial end portion of the outer tube being the outer end portion, and the core and The holding member is attached to the film roll by inserting the support portion into the opening such that the exterior end portion is interposed between the support portion and the exterior tube, and the exterior tube is a tube material of at least three layers laminated via an air layer. Specially consist of To.

  The film reel package of the present invention is obtained by stacking a plurality of the film reel packages of the present invention on a transport pallet, and the plurality of film reel packages are interconnected via a plate-like portion. It is characterized by being laminated.

  ADVANTAGE OF THE INVENTION According to this invention, the film reel package which reduced generation | occurrence | production of the abrasion powder from a holding member, a core, and an exterior tube by using the exterior tube which consists of at least three layers of tube materials laminated | stacked through the air layer is used. And a film reel assembly package provided with such a film reel package.

It is a figure showing composition of a film reel package. FIG. 3 is a diagram illustrating the generation of wear powder. It is a side view explaining the mechanism estimated to generate | occur | produce a wear powder. It is a figure showing composition of an important section of a film reel package of one embodiment of the present invention. It is a front view which shows a film reel assembly package.

  Next, an embodiment for carrying out the present invention will be described with reference to the drawings. Before describing the film reel package according to the present invention, a general film reel package will be described with reference to FIG.

  As shown in the upper part of FIG. 1, a film roll 20 is formed by winding a long film 22 around a cylindrical core 21. The core 21 is formed of, for example, paperboard. The direction in which the rotation axis extends when the film 22 is wound around the core 21 will be referred to as the axial direction of the core 21. Both ends in the axial direction of the core 21 are openings 23. The wound film 22 is, for example, a polymer film, and is, for example, a polyolefin film used as a battery separator film disposed between a positive electrode and a negative electrode in a lithium ion secondary battery. Since the surface treatment and processing performed by unwinding the battery separator film from the film winding body 20 are generally performed in a clean room, it is necessary to suppress dust generation in the film winding body 20 wound with the battery separator film. .

  The film roll 20 is covered with an outer tube 40 for its protection. The outer tube 40 is a cylindrical polymer film having openings at both ends in the axial direction of the core 21, and the film roll 20 is accommodated inside the outer tube 40. The outer tube 40 is made of a flexible and easily deformable material such as polyethylene or polypropylene. The outer tube 40 may be one in which one of both ends along the axial direction of the core 21 is closed, that is, an elongated bag shape. When referred to as the outer tube 40 in the present specification, a bag-shaped tube is also included.

  The film reel package 10 has a pair of holding members 30 attached to the film winding body 20 covered with the exterior film 40 in order to prevent the ground and other objects from contacting the film winding body 20. The film roll 20 is held by 30. The upper diagram in FIG. 1 shows the film roll 20, the holding member 30, and the outer tube 40 before assembling the film reel package 10. The holding member 30 includes a plate-shaped portion 31 that is a thick plate-shaped member, and a plug (supporting portion) 32 provided at the center of the plate-shaped portion 31 and protruding from the plate-shaped portion 31. It is formed from a large synthetic resin. The plate-shaped portion 31 has, for example, a square shape, and the length of one side thereof is larger than the maximum diameter of the film roll 20. Although not shown in FIG. 1, an engagement portion is formed on each side of the plate-shaped portion 31 so that it can be connected to a plate-shaped portion of another holding member having the same shape. . In the illustrated holding member 30, the plug 32 is provided as a substantially cylindrical member having a hole penetrating the plate-shaped portion 31. The outer diameter of the plug 32 is slightly smaller than the inner diameter of the core 21 and can be freely inserted into the opening 23 at the end of the core 21.

  When the plug 32 of the holding member 30 is inserted into the opening 23 of the core 21 to complete the film reel package 10, both ends of the outer tube 40 in the axial direction of the core 21 are It is housed in the opening 23 of the core 21. As a result, inside the opening 23 of the core 21, the end of the outer tube 40 is interposed between the core 21 and the plug 32 of the holding member 30.

  In the conventional film reel package 10, a single-layer polyethylene film or polypropylene film having a thickness of, for example, about 10 μm to 50 μm is used as the outer tube 40. In such a conventional film reel package 10, abrasion powder originating from the core 21, the holding member 30, and the outer tube 40 is generated when transported over a long distance, and the abrasion powder adheres to the inner surface of the core 21. There was something to do. The present inventors have studied the mechanism of the formation of wear powder, and have obtained the following conclusions.

  FIG. 2 is an enlarged view of the vicinity of the end of the core 21 in the film reel package 10. The plug 32 of the holding member 30 is formed in a substantially cylindrical shape as described above, and the outer peripheral surface of the plug 32 increases the strength of the plug 32 and facilitates insertion of the plug 32 into the opening 23 of the core 21. Are formed, a plurality of ribs 33 are formed. The maximum outer diameter of the plug 32 refers to the maximum value of the outer diameter of the plug when considering the rib 33 as well. FIG. 3 shows a state in which three layers of the film reel package 10 are stacked on the pallet 61 to form a film reel assembly package. A crosspiece 62 is formed on the upper surface of the pallet 61 so that the film reel package 10 does not move in the horizontal direction. When this film reel package is transported by truck, even if it is covered with a stretch film or the like, the upper film reel package 10 vibrates in the horizontal plane direction, and the holding member of the lower film reel package 10 is held. Since the weight of the upper and middle film reel packages 10 acts on 30, the inclination of the holding member 30 becomes larger than that of the upper side. The form of the film reel package 10 is preferably applied with the weight of the film roll 20 of 10 kg to 50 kg in view of the load resistance of the holding member 30.

  In FIG. 3, the broken line indicates the position of the holding member 30 in each film reel package 10 when not vibrating. When the film reel package 10 vibrates during transportation, local stress concentration occurs between the rib 33 and the inner surface of the core 21 due to the large inclination of the holding member 30 of the lower film reel package 10 in particular. In addition, a shift occurs between the direction in which the plug 32 extends and the axial direction of the core 21. As a result, as shown by reference numeral 50 in the lower part of FIG. 2, a break occurs in the outer tube 40, and at the position of the break, the outer peripheral surface of the plug 32, particularly the rib 33, and the inner surface of the core 21 directly contact and rub against each other. As a result, wear powder derived from the core 21 and the holding member 30 is generated. Pieces of the torn outer tube 40 can also become wear powder. This forming mechanism corresponds to the fact that the lower one of the film reel packages 10 stacked on the pallet 61 generates more abrasion powder.

  Therefore, the present inventors have further studied the process of forming the abrasion powder and the cause of the breakage of the outer tube 40 which causes the process. As a result, it was presumed that in a state in which the load was applied, the core 21 and the plug 32 moved in different directions and different amounts, and a tensile force was applied to the outer tube 40, resulting in breakage. Therefore, the present inventors provide a sliding surface in the outer tube 40, and when the movement of the core 21 and the movement of the plug 32 are in different directions and have different amounts, the difference is absorbed by the sliding surface, so that the outer tube 40 is provided. The present invention has been completed by considering that it is possible to prevent the tearing of the sheet. In order to provide a sliding surface, the exterior tube 40 may be formed of a plurality of layers of tube materials stacked via an air layer. As will be apparent from the examples described later, since the effect of suppressing the generation of abrasion powder is limited when two tube materials are used, three or more tube materials are provided. For example, when three layers of tube materials are laminated to form the exterior tube 40, three tubes made of polyethylene or polypropylene may be prepared and arranged in the radial direction so as to have a triple structure. The outer tube 40 may be in the shape of a bag, but in that case, the outer tube 40 may have a triple bag structure.

  FIG. 4 is a diagram showing a configuration of the film reel package 10 according to the embodiment of the present invention including the outer tube 40 configured as described above, and shows a configuration near the opening 23 of the core 21. I have. The exterior tube 40 has a configuration in which three layers of tube materials 41 are stacked via an air layer. Except for the configuration of the outer tube 40, the film reel package 10 of the present embodiment is the same as the film reel package 10 described with reference to FIG.

  In the present invention, the reason why the outer tube 40 is formed by laminating three or more layers of the tube material 41 via the air layer is to form a sliding surface in the outer tube 40. Therefore, it is preferable that the material constituting the tube member 41 has a coefficient of static friction between them of 0.5 or less. If the tube material 41 is too thin, the strength is simply insufficient, and if it is too thick, the effect of forming a slip surface is lost. Therefore, the film thickness of the tube material 41 is preferably 10 μm or more and 50 μm or less. In the present invention, even if there is some backlash when holding the film roll 20 by the holding member 30, the inner surface of the core can be prevented from being stained. However, if the backlash is large, the outer tube 40 may be torn. Therefore, in order to reduce the backlash when the film roll 20 is held by the holding member 30, the inner diameter of the core 21 and the maximum in the plug 32 are reduced. Is preferably 0.2 mm or less.

  Next, a film reel assembly package in which a plurality of the film reel packages 10 of the present embodiment are stacked will be described. As shown in FIG. 5, in the film reel assembly package, a plurality of film reel packages 10 are interconnected via a plate-shaped portion 31 of the holding member 30 of each film reel package 10 on a transport pallet 61. It is connected and laminated. In the illustrated example, a total of 12 film reel packages 10 of four rows horizontally and three rows vertically are placed on the pallet 61. A frame member 62 is provided on the upper surface of the pallet 61 in a frame shape so as to surround the mounting position of the film reel package 10 so that the film reel package 10 does not move horizontally on the pallet 61.

  It is sufficient to place a plurality of the film reel packages 10 on the pallet 61 for short-distance movement in a factory or the like. However, when transporting a long distance by loading on a truck, collapse of the load occurs. There is a risk. Therefore, when carrying out long-distance transportation, a top plate 63 is provided so as to cover the laminated film reel package 10 and the upper surface thereof. Preferably, it is covered with 64. When the stretch film 64 is used, the stretch film 64 covers at least a part of the pallet 61 and is fixed to the pallet 61.

  The film reel package 10 according to one embodiment of the present invention has been described. In the film reel package 10, the film reel package 10 is interposed between the core 21 and the plug 32 of the holding member 30 in the opening 23 of the core 21. The exterior tube 40 is composed of three or more layers of tube material 41 laminated via an air layer. In this configuration, since the tube members 41 can slide with each other, when the positional relationship between the core 21 and the holding member 30 changes due to vibration or the like, the outer tube 40 can be prevented from being torn, and the core 21 and the holding member 30 can be directly connected to each other. Rubbing can be prevented, and generation of abrasion powder is reduced.

  With the film reel package according to the present invention, by using the film reel package according to the present invention, stable transportation can be realized while reducing generation of abrasion powder. In particular, by covering a plurality of laminated film reels, including at least a part of a transport pallet, with a stretch film, transport over a long distance without causing collapse of the load becomes possible.

In the present invention, by setting the mutual static friction coefficient of the tube materials to 0.5 or less, the sliding effect in the outer tube is enhanced, and the generation of abrasion powder can be further reduced. By setting the film thickness of the tube material to 10 μm or more and 50 μm or less, generation of abrasion powder can be further reduced while maintaining the strength of the outer tube. By setting the difference between the inner diameter of the core and the maximum outer diameter of the support portion (plug) to be 0.2 mm or less, the play between the core and the holding member can be eliminated. As a plate-shaped part of the holding member, a length of one side is formed to be a square larger than the maximum diameter of the film roll, and is connected to a plate-shaped part of another holding member through a side of the plate-shaped part. By using the one that is configured to be possible, it is possible to easily configure a film reel assembly package configured by connecting and stacking film reel packages to each other.
The method for measuring the properties of the tube material will be described below.
(1) Film thickness The tube material was cut into a size of 10 cm × 10 cm, and 16 points were measured at intervals of 3 cm in length and width, and the average value was defined as the film thickness (μm). A contact thickness meter was used for the measurement.
(2) Coefficient of Static Friction The coefficient of static friction between the outer surface and the inner surface of the tube material was determined by calculating the average value of the results obtained by measuring three points according to JIS K7125.

  Next, the present invention will be described in more detail with reference to Examples and Comparative Examples.

  The film reel package 10 described with reference to FIGS. 1 and 4 is produced, and the produced film reel package 10 is placed on a pallet 61 in three stages and four rows as shown in FIG. 63 was provided and covered with a stretch film 64 to form a film reel assembly package. At this time, the material and thickness of the tube material 41 constituting the outer tube 40 and the number of stacked tube materials 41 were varied for each film reel assembly package. The core 21 used was made of paperboard having a length in the axial direction of 900 mm, an inner diameter of 152.6 mm, and a thickness of 10 mm. The holding member 30 is made of impact-resistant polystyrene (HI-PS), and has a square plate-like portion 31 having a length of one side of 290 mm, and is connected to the plate-like portion 31 of another holding member 30. The length of one side including the engaging portion used in the above is 310 mm, the length of the plug (support portion) 32 is 70 mm, the inner diameter is 120 mm, and the outer diameter of the plug 32 including the rib 33 is 152.4 mm. It was used. As the film 22, a film having a film thickness of 12 μm and a film width of 865 mm was used, and the film 22 having a maximum diameter of about 250 mm and a weight of about 15 kg was used.

  Each film reel assembly package manufactured in this manner was mounted on a truck, and transported in a section having a total distance of 1869.4 km. Using a truck equipped with a rear wheel air suspension, the transportation section is a normal paved road, which includes 1829.4 km of an expressway and 40 km of a general road. The loading of the film reel assembly package on the truck bed was performed on 14 pallets of 2 rows × 7 rows, and a lashing belt was appropriately used for fixing the film reel assembly package to the truck bed. After transport, the film reel assembly package was unpacked, the holding member 30 was removed from the film reel package 10, and the state of generation of abrasion powder on the inner surface of the core 21 was observed. The generation state of the abrasion powder was visually observed using a 400 lumen LED light. Since the holding members 30 are attached to both ends of the core 21 in one film reel package 10, there is a possibility that abrasion powder is generated with respect to one core 21 according to the process of forming the abrasion powder shown in FIG. There will be two places. If the core 21 has a sufficient length, it can be determined at which location the wear powder is generated when the wear powder is attached to the inner surface of the core. Therefore, as a result of observing the inner surface of the core 21, the value obtained by dividing the number of locations where the wear powder was actually detected by twice the total number of the cores 21 (that is, the total number of ends of the core 21) is referred to as "core inner surface contamination". Is defined as Table 1 shows the results. In Table 1, “○” is displayed when the occurrence rate of core inner surface contamination is less than 0.5%, “、” is displayed when the occurrence rate is 0.5% or more and less than 5%, and when “5% or more”. "X" is displayed. Practically, if the rate of occurrence of contamination on the inner surface of the core is less than 0.5%, the work of cleaning the inner surface of the core before the film winding body 20 is carried into the clean room can be greatly reduced, which is important for the environment of the clean room. It is conceivable that the possibility of dust generation having an effect can be reduced. In Table 1, HDPE, LDPE and LLDPE mean high-density polyethylene, low-density polyethylene, and linear low-density polyethylene (linear polyethylene), respectively.

  According to Example 1, Comparative Examples 1 and 2, or Example 2 and Comparative Examples 6 and 7 in Table 1, even when the number of overlapping tube materials is two, the occurrence rate of core inner surface contamination is 0.5% or more. It can be seen that in order to keep the rate of occurrence of contamination on the inner surface of the core within an allowable range, the number of overlapping tube materials 41 constituting the outer tube 40 should be 3 or more.

  From Example 1 and Comparative Example 5 in Table 1, the total film thickness of the tube material constituting the exterior tube 40 was obtained when the three tube materials having a thickness of 13 μm were stacked and when the tube material had a single film thickness of 41 μm. Even if the thickness is almost the same, the outer tube 40 should be composed of three or more layers of the tube material 41 laminated via an air layer in order to keep the incidence rate of contamination on the inner surface of the core within an allowable range. I understand.

  From Examples 1, 2 and 3 in Table 1, in order to keep the rate of occurrence of contamination on the inner surface of the core within an allowable range, the material of the tube material 41 constituting the outer tube 40 is not dependent on the material of the tube material. It can be seen that the number of layers should be 3 or more and the coefficient of static friction between the tube materials should be 0.5 or less.

DESCRIPTION OF SYMBOLS 10 Film reel package 20 Film winding body 21 Core 22 Film 30 Holding member 31 Plate part 32 Plug 33 Rib 40 Outer tube 41 Tube material 61 Pallet 62 Beam member 63 Top plate 64 Stretch film

Claims (7)

A film roll comprising a cylindrical core and a film wound on the core,
An outer tube that covers the film roll so as to include the film roll inside,
Holding members that are arranged at both ends in the axial direction of the core and hold the film roll,
Has,
The holding member includes a plate-shaped portion, and a support portion protruding from the plate-shaped portion and configured to be freely inserted into an opening formed at an axial end of the core,
The end in the axial direction of the exterior tube as an exterior end,
The exterior end is accommodated in the opening, and the support is inserted into the opening so that the exterior end is interposed between the core and the support. Attached to the body,
A film reel package, wherein the exterior tube is made of at least three layers of tube material laminated via an air layer.   The film reel package according to claim 1, wherein the mutual static friction coefficient of the tube members is 0.5 or less.   3. The film reel package according to claim 1, wherein the film thickness of the tube material is 10 μm or more and 50 μm or less.   The film reel package according to any one of claims 1 to 3, wherein a difference between an inner diameter of the core and a maximum outer diameter of the support portion is 0.2 mm or less.   The plate-shaped portion is formed in a square shape having one side longer than the maximum diameter of the film roll, and can be connected to a plate-shaped portion of another holding member via a side of the plate-shaped portion. The film reel package according to any one of claims 1 to 4, wherein the package is configured as follows.   A plurality of the film reel packages according to any one of claims 1 to 5 are stacked on a transport pallet, and the plurality of film reel packages are mutually connected via the plate portion. A film reel assembly package characterized by being connected and laminated. The film reel assembly package according to claim 6, wherein the plurality of stacked film reel packages including at least a part of the transport pallet are covered with a stretch film.