Roll package

Abstract

Provided is a roll package with which safety can be improved.　A roll package according to the present invention comprises a winding core, a roll body of a resin sheet wound in a roll shape onto the outer peripheral surface of the winding core, a first holding member for holding a first end portion side of the winding core, a second holding member for holding a second end portion side of the winding core, and an accommodating member for accommodating the roll body, wherein: the winding core and the roll body are held in a suspended state by the first holding member and the second holding member; and the roll package has the following features, namely "Feature (1): The resin sheet is an intermediate film for laminated glass." or "Feature (2): The width dimension of the resin sheet is 130 cm or more.".

Description

Roll packaging

[0001] The present invention relates to a roll package including a core and a roll of a resin sheet.

[0002] Resin sheets such as interlayer films for laminated glass (hereinafter sometimes abbreviated as interlayer films) are widely used. The interlayer films are sandwiched between a pair of glass sheets to form laminated glass. The laminated glass is widely used in automobiles, railway vehicles, aircraft, ships, buildings, and the like.

[0003] After being manufactured, the interlayer film is wound around a core to form a roll (see, for example, Patent Document 1). The roll is stored in a roll package packed with a predetermined material until use. The roll may be transported in the roll package.

[0004] Japanese Patent Application Laid-Open No. 2022-015080

[0005] Conventionally, roll packages are manufactured by packaging a roll of interlayer film wound around a core, placed vertically on a pallet base. By placing the roll vertically on a pallet base, storage space can be reduced.

[0006] From the viewpoint of variations in interlayer film products and laminated glass products, it is conceivable to produce interlayer films with large width dimensions. However, when a roll of interlayer film with a large width dimension is placed vertically on a pallet base, the center of gravity of the roll is higher, increasing the risk of the roll tipping over. When the roll is transported in the form of a roll package, vibrations are applied to the roll package. In a roll package containing a vertically placed roll, the risk of the roll tipping over due to this vibration is quite high.

[0007] An object of the present invention is to provide a roll package that can improve safety.

[0008] The present specification discloses the following roll package.

[0009] Item 1. A roll package comprising: a winding core; a roll body of a resin sheet wound in a roll shape on the outer peripheral surface of the winding core; a first holding member that holds a first end side of the winding core; a second holding member that holds a second end side of the winding core; and a housing member that houses the roll body, wherein the winding core and the roll body are held in a suspended state by the first holding member and the second holding member, and the roll package comprises the following configuration (1) or the following configuration (2).

[0010] Feature (1): The resin sheet is an interlayer film for laminated glass. Feature (2): The resin sheet has a width dimension of 130 cm or more.

[0011] Item 2. The roll package according to Item 1, comprising the configuration (1).

[0012] Item 3. The roll package according to Item 1, comprising the configuration (2).

[0013] Item 4. The roll package according to item 1, comprising the configuration (1) and the configuration (2).

[0014] Item 5. The roll packaging body according to any one of Items 1 to 4, wherein the storage member has a bottom member, the roll body is disposed above the bottom member of the storage member, and the shortest distance between an upper surface of the bottom member of the storage member and an outer peripheral surface of the roll body is 1 cm or more and 30 cm or less.

[0015] Item 6. The roll packaging body according to any one of Items 1 to 5, wherein the storage member has a bottom member, the roll body is disposed above the bottom member of the storage member, and the distance between an upper surface of the bottom member of the storage member and an outer peripheral surface of the roll body is not uniform in the axial direction of the winding core.

[0016] Item 7. The roll package according to any one of Items 1 to 6, wherein the storage member includes iron, stainless steel, aluminum, resin, wood, or carton.

[0017] Item 8. The roll package according to any one of Items 1 to 7, wherein the resin sheet has a non-uniform thickness in the width direction of the resin sheet.

[0018] Item 9. The roll package according to any one of Items 1 to 8, wherein an absolute value of a difference between a maximum thickness of the resin sheet and a minimum thickness of the resin sheet is 100 μm or more.

[0019] Item 10. The roll package according to any one of Items 1 to 9, wherein the winding core comprises paper, glass, resin, wood, cloth, or fiber-reinforced plastic.

[0020] Item 11. The roll package according to any one of Items 1 to 10, wherein the winding core has a cylindrical winding core body and a rod-shaped member, the axial dimension of the rod-shaped member is longer than the axial dimension of the cylindrical winding core body, the rod-shaped member is inserted inside the cylindrical winding core body, a first end of the rod-shaped member is exposed from the cylindrical winding core body, a second end of the rod-shaped member is exposed from the cylindrical winding core body, the resin sheet is wound in a roll shape on the outer peripheral surface of the cylindrical winding core body, the first end of the rod-shaped member is the first end of the winding core, and the second end of the rod-shaped member is the second end of the winding core.

[0021] Item 12. The roll package according to any one of items 1 to 11, wherein the first holding member includes cardboard, carton, wood, resin, aluminum, iron, or stainless steel, and the second holding member includes cardboard, carton, wood, resin, aluminum, iron, or stainless steel.

[0022] Item 13. The roll package according to any one of Items 1 to 12, wherein the axial dimension of the winding core exposed from the end face of the roll body at the first end side of the winding core is 1 cm or more and 40 cm or less, and the axial dimension of the winding core exposed from the end face of the roll body at the second end side of the winding core is 1 cm or more and 40 cm or less.

[0023] Item 14. The roll package according to any one of Items 1 to 13, wherein the resin sheet contains a thermoplastic resin.

[0024] Item 15. The roll packaging body according to any one of Items 1 to 14, wherein the resin sheet has a functional film.

[0025] Item 16. The roll package according to any one of Items 1 to 15, wherein the resin sheet contains a heat-shielding material.

[0026] Item 17. The roll package according to any one of Items 1 to 16, wherein the resin sheet contains K or Mg as an adhesion adjuster.

[0027] Item 18. The roll packaging body according to any one of Items 1 to 17, further comprising a buffer member, the storage member having a bottom member, the buffer member being disposed on an upper surface side of the bottom member of the storage member, and the roll body being disposed above the buffer member.

[0028] Item 19. A roll package comprising: a winding core; a roll of a resin sheet wound in a roll shape on the outer peripheral surface of the winding core; a storage member that stores the roll; and a buffer member, wherein the storage member has a bottom member, the buffer member is disposed on an upper surface side of the bottom member of the storage member, the roll body is disposed on an upper surface side of the buffer member, and the upper surface of the buffer member is in contact with the roll body, and the roll package comprises the following configuration (1) or (2):

[0029] Feature (1): The resin sheet is an interlayer film for laminated glass. Feature (2): The resin sheet has a width dimension of 130 cm or more.

[0030] Item 20. The roll package according to Item 19, comprising the configuration (1).

[0031] Item 21. The roll package according to Item 19, comprising the configuration (2).

[0032] Item 22. The roll package according to Item 19, comprising the configuration (1) and the configuration (2).

[0033] Item 23. The roll package according to any one of Items 19 to 22, wherein the upper surface of the buffer member has a recess, and the height from the bottom surface of the buffer member to the maximum depth position of the recess of the buffer member is not uniform in the length direction of the buffer member.

[0034] Item 24. The roll package according to any one of Items 19 to 23, wherein the storage member has a first side plate member and a second side plate member, and the buffer member is in contact with the first side plate member of the storage member and also in contact with the second side plate member of the storage member.

[0035] Item 25. The roll packaging body according to any one of Items 19 to 24, wherein the buffer member has a first buffer section and a second buffer section, and in the buffer member, the first buffer section is located on the bottom member side of the storage member, and the second buffer section is located on the roll body side.

[0036] Item 26. The roll package according to Item 25, wherein the first buffer section and the second buffer section of the buffer member are separable.

[0037] Item 27. The roll package according to Item 25 or 26, wherein the first buffer section and the second buffer section in the buffer member are made of different materials.

[0038] Item 28. The roll package according to any one of Items 25 to 27, wherein the first buffer section includes polystyrene foam, plastic cardboard, corrugated cardboard, carton, or wood, and the second buffer section includes polypropylene, expanded polypropylene, polycarbonate, expanded polyethylene, eco-plastic, cloth, or carton.

[0039] Item 29. The roll package according to any one of Items 25 to 28, wherein the upper surface of the second buffer portion of the buffer member has a curved surface.

[0040] Item 30. The roll package according to any one of Items 19 to 29, wherein the resin sheet has a non-uniform thickness in the width direction of the resin sheet.

[0041] Item 31. The roll package according to any one of Items 19 to 30, wherein an absolute value of a difference between a maximum thickness of the resin sheet and a minimum thickness of the resin sheet is 100 μm or more.

[0042] Item 32. The roll package according to any one of Items 19 to 31, wherein the resin sheet contains a thermoplastic resin.

[0043] Item 33. The roll packaging body according to any one of Items 19 to 32, wherein the resin sheet has a functional film.

[0044] Item 34. The roll package according to any one of Items 19 to 33, wherein the resin sheet contains a heat-shielding material.

[0045] Item 35. The roll package according to any one of Items 19 to 34, wherein the resin sheet contains K or Mg as an adhesion adjuster.

[0046] According to the present invention, it is possible to provide a roll package that can improve safety.

[0047] FIG. 1 is a front view schematically illustrating a roll package according to a first embodiment of the present invention. FIG. 2 is a diagram for explaining the configuration of the roll package shown in FIG. 1. FIG. 3 is a perspective view showing a first example of a winding core that can be used in the present invention. FIG. 4 is a perspective view showing a second example of a winding core that can be used in the present invention. FIG. 5(a) is a diagram for explaining the configuration of the roll body, and FIG. 5(b) is a cross-sectional view along the thickness direction of the resin sheet. FIG. 6 is a front view schematically illustrating a roll package according to a second embodiment of the present invention. FIG. 7(a) is a front cross-sectional view of the roll package shown in FIG. 6, and FIG. 7(b) is a side cross-sectional view of the roll package shown in FIG. 6. FIG. 8 is a perspective view showing an example of a cushioning member that can be used in the present invention. FIG. 9 is a front view showing another example of a first cushioning section that can be used in the present invention. Fig. 10(a) is a plan view of a lower member included in the first buffer section shown in Fig. 9, Fig. 10(b) is a front view of the lower member included in the first buffer section shown in Fig. 9, and Fig. 10(c) is a side view of the lower member included in the first buffer section shown in Fig. 9. Fig. 11(a) is a plan view of an upper member included in the first buffer section shown in Fig. 9, Fig. 11(b) is a front view of the upper member included in the first buffer section shown in Fig. 9, and Fig. 11(c) is a side view of the upper member included in the first buffer section shown in Fig. 9. Fig. 12 is a front cross-sectional view of a roll package according to a third embodiment of the present invention. Fig. 13 is a front cross-sectional view of a roll package according to a fourth embodiment of the present invention.

[0048] The present invention will be described in detail below.

[0049] The roll package (A) according to the present invention comprises a winding core, a roll of a resin sheet wound in a roll shape on the outer peripheral surface of the winding core, a first holding member that holds a first end side of the winding core, a second holding member that holds a second end side of the winding core, and a storage member that stores the roll. In the roll package (A) according to the present invention, the winding core and the roll are held in a suspended state by the first holding member and the second holding member.

[0050] The roll package (B) according to the present invention includes a winding core, a roll of a resin sheet wound in a roll shape on the outer peripheral surface of the winding core, a storage member that stores the roll, and a buffer member. In the roll package (B) according to the present invention, the storage member has a bottom member. In the roll package (B) according to the present invention, the buffer member is disposed on the upper surface side of the bottom member of the storage member, and the roll is disposed on the upper surface side of the buffer member. In the roll package (B) according to the present invention, the upper surface of the buffer member is in contact with the roll.

[0051] The roll packaging bodies (A) and (B) according to the present invention have the following configuration (1) or the following configuration (2). The roll packaging bodies (A) and (B) according to the present invention may have the following configuration (1), the following configuration (2), or both the following configurations (1) and (2).

[0052] Feature (1): The resin sheet is an interlayer film for laminated glass. Feature (2): The resin sheet has a width dimension of 130 cm or more.

[0053] The roll packages (A) and (B) according to the present invention have the above-described configuration, and therefore can improve safety.

[0054] Furthermore, since the roll packages (A) and (B) according to the present invention are provided with the above-described configuration, deterioration in the quality of the resin sheet during packaging and transportation of the roll package can be suppressed. Even if the roll package is subjected to vibrations during transportation, there is almost no risk of the roll falling over, so the safety of the roll packages (A) and (B) according to the present invention is quite high.

[0055] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. However, the following embodiments are merely examples, and the present invention is not limited to the following embodiments. In addition, in each drawing, components having substantially the same functions may be referred to by the same reference numerals.

[0056] A roll package according to the present invention will be described below with reference to Figures 1 to 13. In Figure 1 and the figures described below, different parts can be interchanged unless there are special circumstances that make them incompatible.

[0057] (First embodiment: roll package (A)) Fig. 1 is a front view schematically showing a roll package according to a first embodiment of the present invention. Fig. 1 is a front view showing the roll package (A). Fig. 2 is a view for explaining the configuration of the roll package shown in Fig. 1.

[0058] The roll package 90 includes a core 1 , a roll 2 of a resin sheet, a first holding member 3 , a second holding member 4 , and a storage member 5 .

[0059] The winding core 1 is rod-shaped. The resin sheet is wound in a roll shape on the outer peripheral surface of the winding core 1 to form a resin sheet roll body 2. The resin sheet is wound in a roll shape on the outer peripheral surface of the winding core 1 except for both end portions.

[0060] The first holding member 3 holds the first end 1a side of the winding core 1. The second holding member 4 holds the second end 1b side of the winding core 1.

[0061] The storage member 5 is a member that stores the roll body 2. The storage member 5 includes a bottom member 51, a first side plate member 52 (first side wall member), a second side plate member 53 (second side wall member), a third side plate member 54 (third side wall member), a fourth side plate member 55 (fourth side wall member), and a cover member 56. For convenience of illustration, the first side plate member 52 and the second side plate member 53 are omitted from FIG. 1 .

[0062] In the roll packaging body 90, the roll body 2 is placed horizontally. In the roll packaging body 90, the winding core 1 and the roll body 2 are held in a suspended state by the first holding member 3 and the second holding member 4. The roll body 2 is placed above the bottom member 51 of the storage member 5. The bottom of the roll body 2 and the upper surface 51 a of the bottom member 51 of the storage member 5 are not in contact with each other.

[0063] In the roll package 90, the axial direction of the winding core 1 is horizontal.

[0064] In the roll packaging body 90, the winding core 1 and the roll body 2 are held in a suspended state, so the shortest distance A between the upper surface 51 a of the bottom member 51 of the storage member 5 and the outer peripheral surface of the roll body 2 exceeds 0 cm. The shortest distance A between the upper surface 51 a of the bottom member 51 of the storage member 5 and the outer peripheral surface of the roll body 2 is preferably 1 cm or more, more preferably 5 cm or more, preferably 30 cm or less, and more preferably 15 cm or less. When the shortest distance A is equal to or greater than the lower limit and equal to or less than the upper limit, the roll body 2 can be stably held. When the shortest distance A is equal to or greater than the lower limit, contact between the upper surface 51 a of the bottom member 51 of the storage member 5 and the outer peripheral surface of the roll body 2 becomes even less likely to occur when the roll packaging body 90 vibrates. When the shortest distance A is equal to or less than the upper limit, the roll packaging body 90 becomes even smaller.

[0065] From the viewpoint of holding the winding core 1 well on the first holding member 3, the axial dimension L1 of the winding core 1 exposed from the end face of the roll body 2 on the first end 1a side of the winding core 1 is preferably 1 cm or more, more preferably 10 cm or more, preferably 40 cm or less, and even more preferably 20 cm or less.

[0066] From the viewpoint of holding the winding core 1 well on the second holding member 4, the axial dimension L2 of the winding core 1 exposed from the end face of the roll body 2 on the second end 1b side of the winding core 1 is preferably 1 cm or more, more preferably 10 cm or more, preferably 40 cm or less, and even more preferably 20 cm or less.

[0067] Next, the winding core will be described with reference to FIGS.

[0068] Fig. 3 is a perspective view showing a first example of a winding core that can be used in the present invention. The winding core 1 shown in Fig. 3 is used in a roll package 90. The winding core 1 has openings at both ends. The winding core 1 has an open end.

[0069] A conventionally known winding core can be used as the winding core 1. There are no particular limitations on the shape of the winding core 1. For example, the winding core 1 may be cylindrical, may be columnar with openings at both ends, or may have any other shape.

[0070] 4 is a perspective view showing a second example of a winding core that can be used in the present invention. The winding core 1A has a cylindrical winding core body 11 and a rod-shaped member 12. The axial dimension of the rod-shaped member 12 is longer than the axial dimension of the cylindrical winding core body 11. The rod-shaped member 12 is inserted inside the cylindrical winding core body 11. A first end 12a of the rod-shaped member 12 is exposed from the cylindrical winding core body 11, and a second end 12b of the rod-shaped member 12 is exposed from the cylindrical winding core body 11. The first end 12a of the rod-shaped member 12 is the first end 1Aa of the winding core 1A. The second end 12b of the rod-shaped member 12 is the second end 1Ab of the winding core 1A.

[0071] When the winding core 1A is used, a resin sheet is wound in a roll shape on the outer peripheral surface of the cylindrical winding core body 11. When the winding core 1A is used, the first holding member 3 holds the first end 1Aa side of the winding core 1A (the first end 12a side of the rod-shaped member 12), and the second holding member 4 holds the second end 1Ab side of the winding core 1A (the second end 12b side of the rod-shaped member 12).

[0072] When using the winding core 1A, the resin sheet may be wound into a roll on the outer peripheral surface of the cylindrical winding core body 11, and then the rod-shaped member 12 may be inserted into the cylindrical winding core body 11. Even when a roll body is produced in this order, in this specification, the cylindrical winding core body 11 and the rod-shaped member 12 are collectively referred to as the winding core.

[0073] Even when using a winding core 1A, the preferred configuration of the above-mentioned shortest distance A, the preferred configuration of the axial dimension L1 of the winding core 1A exposed from the end face of the roll body, and the preferred configuration of the axial dimension L2 of the winding core 1A exposed from the end face of the roll body are the same as the preferred configurations for the winding core 1 described above.

[0074] The materials of the winding cores 1, 1A, the cylindrical winding core body 11, and the rod-shaped member 12 are not particularly limited. The winding cores 1, 1A include, for example, paper, glass, resin, wood, cloth, or fiber-reinforced plastic. The cylindrical winding core body 11 includes, for example, paper, glass, resin, wood, cloth, or fiber-reinforced plastic. The rod-shaped member 12 includes, for example, paper, glass, resin, wood, cloth, or fiber-reinforced plastic. The resin may be polypropylene, polyethylene, or polyvinyl chloride. The wood may be bamboo.

[0075] The winding core 1, 1A includes, for example, polypropylene, polyethylene, polyvinyl chloride, paper, glass, cloth, wood, or fiber-reinforced plastic. The winding core 1, 1A is preferably made of polypropylene, polyethylene, polyvinyl chloride, paper, glass, cloth, wood, or fiber-reinforced plastic.

[0076] The resin sheet and the roll of the resin sheet will be described with reference to FIG.

[0077] Fig. 5(a) is a diagram for explaining the configuration of the roll body, and Fig. 5(b) is a cross-sectional view along the thickness direction of the resin sheet, and Fig. 5(b) is a cross-sectional view along line II in Fig. 5(a).

[0078] The roll packaging 90 uses a resin sheet 21 shown in FIG. 5 . The resin sheet 21 is wound around the outer peripheral surface of the winding core 1. In this embodiment, the resin sheet 21 is an interlayer film for laminated glass. Furthermore, in this embodiment, the width direction dimension W of the resin sheet 21 is 130 cm or more. Therefore, the roll packaging 90 has the above configuration (1) and configuration (2). However, when the roll packaging 90 has the above configuration (2), the resin sheet 21 does not have to be an interlayer film for laminated glass. When the roll packaging 90 has the above configuration (1), the width direction dimension W of the resin sheet 21 may be less than 130 cm. On the other hand, when the width direction dimension W of the resin sheet 21 is 130 cm or more, the adoption of the configuration of the present invention has a significant effect of improving safety.

[0079] The resin sheet 21 is an intermediate film having a three-layer structure including a first layer 25, a second layer 26, and a third layer 27. The resin sheet 21 has a first end 21 a and a second end 21 b. The first end 21 a and the second end 21 b are both ends of the resin sheet 21 in the width direction.

[0080] The thickness of the first end 21a of the resin sheet 21 is different from the thickness of the second end 21b of the resin sheet 21. The thickness of the first end 21a of the resin sheet 21 is thinner than the thickness of the second end 21b of the resin sheet 21. The resin sheet 21 has a non-uniform thickness in the width direction dimension of the resin sheet 21. The resin sheet 21 has a portion where the thickness changes in the width direction dimension of the resin sheet 21. The cross-sectional shape of the resin sheet 21 along the thickness direction is wedge-shaped.

[0081] The resin sheet 21 has a three-layer structure, but the number of layers of the resin sheet used in the present invention is not particularly limited. The resin sheet may have a one-layer structure, a two-layer structure, or a two- or more-layer structure. The resin sheet may have a three-layer structure, a three- or more-layer structure, a four-layer structure, a four- or more-layer structure, a five-layer structure, or a five- or more-layer structure. The resin sheet may have a ten- or less-layer structure, or a five- or less-layer structure. The resin sheet may include only a first layer. The resin sheet may include a first layer and a second layer disposed on a first surface side of the first layer. The resin sheet may include a first layer, a second layer disposed on a first surface side of the first layer, and a third layer disposed on a second surface side of the first layer opposite the first surface.

[0082] The width direction dimension W of the resin sheet is preferably 130 cm or more, more preferably 140 cm or more, even more preferably 150 cm or more, and preferably 270 cm or less, more preferably 250 cm or less, and even more preferably 230 cm or less. In the present invention, even if the width direction dimension W of the resin sheet is equal to or greater than the above-mentioned lower limit, the effects of the present invention can be more effectively exhibited. When the width direction dimension W of the resin sheet is equal to or less than the above-mentioned upper limit, there is no need to excessively increase the size of the roll package. Note that the width direction dimension W of the resin sheet is the distance between the first end and the second end of the resin sheet.

[0083] The resin sheet may contain a thermoplastic resin or a thermosetting resin. The resin sheet may contain a thermoplastic resin, or may contain a thermoplastic resin and a plasticizer. The resin sheet may include a layer containing a thermoplastic resin, or may include a layer containing a thermoplastic resin and a plasticizer. The first layer may contain a thermoplastic resin or a thermosetting resin. The first layer preferably contains a thermoplastic resin, and preferably contains a thermoplastic resin and a plasticizer. The second layer may contain a thermoplastic resin or a thermosetting resin. The second layer preferably contains a thermoplastic resin, and preferably contains a thermoplastic resin and a plasticizer. The third layer may contain a thermoplastic resin or a thermosetting resin. The third layer preferably contains a thermoplastic resin, and preferably contains a thermoplastic resin and a plasticizer.

[0084] From the viewpoint of favorably adhering the resin sheet to the laminated glass member and obtaining a resin sheet that is more suitable for laminated glass, the resin sheet preferably contains a thermoplastic resin in the surface portion, and preferably contains a thermoplastic resin and a plasticizer in the surface portion. From the viewpoint of favorably adhering the resin sheet to the laminated glass member and obtaining a resin sheet that is more suitable for laminated glass, the surface layer of the resin sheet preferably contains a thermoplastic resin, and preferably contains a thermoplastic resin and a plasticizer.

[0085] Examples of the thermoplastic resin include polyvinyl acetal resin, ethylene-vinyl acetate copolymer resin, ethylene-acrylic acid copolymer resin, polyurethane resin, (meth)acrylic resin, polyolefin resin, ionomer resin, and polyvinyl alcohol resin. Thermoplastic resins other than these may also be used. The thermoplastic resins may be used alone or in combination of two or more.

[0086] The plasticizer is not particularly limited. Conventionally known plasticizers can be used as the plasticizer. Examples of the plasticizer include organic ester plasticizers such as monobasic organic acid esters and polybasic organic acid esters, organic phosphoric acid plasticizers, and organic phosphite plasticizers. The plasticizer is preferably an organic ester plasticizer. The plasticizer is preferably a liquid plasticizer. Only one type of plasticizer may be used, or two or more types may be used in combination.

[0087] The resin sheet may contain other components such as a heat-shielding material, an ultraviolet absorber, an antioxidant, a colorant, a coupling agent, a dispersant, a surfactant, a flame retardant, an antistatic agent, an adhesion modifier (such as an alkali metal salt or an alkaline earth metal salt), a moisture-resistant agent, a fluorescent brightener, and an infrared absorber. Each of the other components may be used alone or in combination of two or more.

[0088] From the viewpoint of obtaining a resin sheet more suitable for laminated glass, the resin sheet (interlayer film for laminated glass) preferably contains a heat-shielding material. The heat-shielding material preferably contains a cyclic cyanine compound or heat-shielding particles. From the viewpoint of maintaining the dispersibility of the heat-shielding material and maintaining the heat-shielding properties of the resin sheet, it is preferable that the surface of the resin sheet containing the heat-shielding material does not come into contact with the surface of another member or the surface of a hard member. In the roll package according to the present invention, the surface of the resin sheet containing the heat-shielding material can be prevented from coming into contact with the surface of another member or the surface of a hard member.

[0089] Examples of the cyclic cyanine compound include phthalocyanine compounds, naphthalocyanine compounds, and anthracyanine compounds.

[0090] Examples of the heat-shielding particles include inorganic oxide particles and carbon black.

[0091] Specific examples of the heat-shielding particles include metal oxide particles such as carbon black, aluminum-doped tin oxide particles, indium-doped tin oxide particles, antimony-doped tin oxide particles (ATO particles), gallium-doped zinc oxide particles (GZO particles), indium-doped zinc oxide particles (IZO particles), aluminum-doped zinc oxide particles (AZO particles), niobium-doped titanium oxide particles, sodium-doped tungsten oxide particles, cesium-doped tungsten oxide particles (CWO particles), thallium-doped tungsten oxide particles, rubidium-doped tungsten oxide particles, tin-doped indium oxide particles (ITO particles), tin-doped zinc oxide particles, and silicon-doped zinc oxide particles; and lanthanum hexaboride (LaB ６ ) particles, etc.

[0092] From the viewpoint of favorably adhering the resin sheet to the laminated glass member and obtaining a resin sheet more suitable for laminated glass, the resin sheet (interlayer film for laminated glass) preferably contains an adhesion modifier. From the viewpoint of favorably adhering the resin sheet to the laminated glass member and obtaining a resin sheet more suitable for laminated glass, the resin sheet (interlayer film for laminated glass) more preferably contains an alkali metal salt or alkaline earth metal salt as the adhesion modifier, and even more preferably contains K or Mg as the adhesion modifier. Note that alkaline earth metals refer to six metals: Be, Mg, Ca, Sr, Ba, and Ra. The surface of the resin sheet containing the adhesion modifier has adhesive properties. Therefore, it is preferable that the surface of the resin sheet containing the adhesion modifier does not come into contact with the surface of other components or the surface of hard components. In the roll package according to the present invention, the surface of the resin sheet containing the adhesion modifier can be prevented from coming into contact with the surface of other components or the surface of hard components.

[0093] The resin sheet may have a functional film. Examples of the functional film include an infrared reflective film, a colored film, and a film with a printed design. For example, the resin sheet may have an infrared reflective film to improve heat insulation. For example, the resin sheet may have a colored film or a film with a printed design to further improve design or combine it with other patterns. Resin sheets with infrared reflective films are prone to optical distortion. In contrast, the present invention can effectively suppress optical distortion and distortion even in resin sheets with infrared reflective films.

[0094] The resin sheet may have a uniform thickness in the width direction of the resin sheet, or may have a non-uniform thickness. The resin sheet may have a portion where the thickness varies in the width direction dimension of the resin sheet. A resin sheet having a non-uniform thickness in the width direction of the resin sheet is likely to lose its shape during packaging work and transportation of the roll package. Blocking is also likely to occur. Furthermore, when the resin sheet is an interlayer, distortion is likely to occur. In contrast, in the present invention, even when the resin sheet has a non-uniform thickness, the shape of the resin sheet can be well maintained and blocking can be effectively suppressed. Furthermore, when the resin sheet is an interlayer, distortion can be effectively suppressed.

[0095] When the resin sheet has a thickness that is not uniform in the width direction of the resin sheet, the absolute value of the difference between the maximum thickness of the resin sheet and the minimum thickness of the resin sheet is preferably 100 μm or more, more preferably 300 μm or more, and preferably 1000 μm or less, more preferably 700 μm or less. When the absolute value of the difference is equal to or greater than the lower limit and equal to or less than the upper limit, distortion can be effectively suppressed when the resin sheet is an interlayer film.

[0096] When the resin sheet has a region where the thickness varies in the width direction of the resin sheet, the following dimensions are preferably satisfied: The dimension in the width direction of the resin sheet at the region where the thickness varies is preferably 50 cm or more, more preferably 130 cm or more, even more preferably 140 cm or more, particularly preferably 150 cm or more, and preferably 270 cm or less, more preferably 250 cm or less, and even more preferably 230 cm or less. In the present invention, even if the dimension in the width direction of the resin sheet at the region where the thickness varies is equal to or greater than the above lower limit, the effects of the present invention can be exhibited even more effectively.

[0097] The roll diameter of the roll body 2 may be constant or may vary along the axial direction of the winding core 1. The roll body 2 may have a portion where the roll diameter varies. When the resin sheet has a non-uniform thickness in the width direction of the resin sheet, the roll diameter of the roll body 2 typically differs between the end of the roll body 2 on the first holding member 3 side and the end of the roll body 2 on the second holding member 4 side. When the resin sheet has a non-uniform thickness in the width direction of the resin sheet, the distance between the upper surface 51 a of the bottom member 51 of the accommodating member 5 and the outer peripheral surface of the roll body 2 typically is not uniform in the axial direction of the winding core 1. The roll diameter of the roll body 2 refers to the outer diameter of the roll body 2.

[0098] The roll body 2 may be a roll body with a dustproof film, the outer circumferential surface of which is covered with a dustproof film.

[0099] Next, the first holding member and the second holding member will be described.

[0100] The first holding member 3 is a member that holds the first end 1a side of the winding core 1, and the second holding member 4 is a member that holds the second end 1b side of the winding core 1. The first holding member 3 and the second holding member 4 are each arranged on the upper surface 51a of the bottom member 51 of the accommodating member 5. In the roll packaging body 90, the first holding member 3 and the second holding member 4 hold the winding core 1 and the roll body 2 in a suspended state.

[0101] The first holding member 3 has a recess that corresponds to the outer peripheral shape of the winding core 1. The second holding member 4 has a recess that corresponds to the outer peripheral shape of the winding core 1. The recess of the first holding member 3 holds the first end 1a side of the winding core 1, and the recess of the second holding member 4 holds the second end 1b side of the winding core 1.

[0102] The shapes and sizes of the first holding member 3 and the second holding member 4 are not particularly limited as long as they can hold the winding core 1. The first holding member and the second holding member may have the same shape or different shapes. The shapes of the portions of the first holding member and the second holding member that hold the winding core are not particularly limited as long as they can hold the winding core. The first holding member may have a hole corresponding to the outer circumferential shape of the winding core. The first end side of the winding core may be held by the hole in the first holding member. The first holding member may be composed of multiple holding members, and the recess or hole may be formed in the first holding member by combining the multiple holding members. The second holding member may have a hole corresponding to the outer circumferential shape of the winding core. The second end side of the winding core may be held by the hole in the second holding member. The second holding member may be composed of multiple holding members, and the recess or hole may be formed in the second holding member by combining the multiple holding members.

[0103] The materials of the first holding member 3 and the second holding member 4 are not particularly limited as long as they can hold the winding core 1 and the roll 2. The first holding member 3 includes, for example, cardboard, carton, wood, resin, aluminum, iron, or stainless steel. The second holding member 4 includes, for example, cardboard, carton, wood, resin, aluminum, iron, or stainless steel. It is preferable that the first holding member 3 and the second holding member 4 are made of cardboard, carton, wood, resin, aluminum, iron, or stainless steel, respectively.

[0104] Next, the housing member will be described.

[0105] The housing member 5 includes a bottom member 51 , a first side plate member 52 , a second side plate member 53 , a third side plate member 54 , a fourth side plate member 55 , and a cover member 56 .

[0106] The bottom member 51 is a member that comes into contact with the placement surface. The first side plate member 52 and the second side plate member 53 are each positioned approximately parallel to the axial direction of the winding core 1. The third side plate member 54 and the fourth side plate member 55 are each members that connect the first side plate member 52 and the second side plate member 53. The lid member 56 is a member that is positioned above the roll body 2. Normally, the lid member 56 does not come into contact with the outer peripheral surface of the roll body 2. The heights of the first side plate member 52, the second side plate member 53, the third side plate member 54, and the fourth side plate member 55 are each set so that the lid member 56 does not come into contact with the outer peripheral surface of the roll body 2.

[0107] The bottom member 51, the first side plate member 52, the second side plate member 53, the third side plate member 54, the fourth side plate member 55, and the cover member 56 may each be made of the same material or different materials.

[0108] The first holding member and the storage member may be integrated, or the second holding member and the storage member may be integrated. The first holding member and the bottom member may be integrated, or the second holding member and the bottom member may be integrated. The first holding member and the lid member may be integrated, or the second holding member and the lid member may be integrated. In these cases, the number of parts of the roll package can be reduced.

[0109] The storage member 5 includes, for example, iron, stainless steel, aluminum, resin, wood, or carton. The storage member 5 is preferably made of iron, stainless steel, aluminum, resin, wood, or carton. The bottom member 51 includes, for example, iron, stainless steel, aluminum, resin, wood, or carton. The bottom member 51 is preferably made of iron, stainless steel, aluminum, resin, wood, or carton.

[0110] The storage member does not have to include a bottom member, for example. The storage member may be, for example, a frame stand. In this specification, a storage member is also referred to as a storage member even when at least a portion of the surface is open, such as a frame stand. When the storage member is a frame stand, the first holding member and the second holding member may be attached to, for example, the frame of the frame stand. Even in this case, the first holding member and the second holding member can hold the winding core and the roll body in a suspended state.

[0111] The first holding member and the first side plate member may be integrated, and the second holding member and the second side plate member may be integrated. In this case, the number of parts of the roll package can be reduced. As an example, the first holding member integrated with the first side plate member may have an inner portion (recess or hole) for holding the first end side of the winding core, and the second holding member integrated with the second side plate member may have an inner portion (recess or hole) for holding the second end side of the winding core.

[0112] (Second embodiment: roll package (B)) Fig. 6 is a front view schematically showing a roll package according to a second embodiment of the present invention. Fig. 6 is a front view showing the roll package (B). Fig. 7(a) is a front cross-sectional view of the roll package shown in Fig. 6, and Fig. 7(b) is a side cross-sectional view of the roll package shown in Fig. 6.

[0113] The roll package 90A includes a core 1, a roll 2 of a resin sheet, a housing member 5, and a buffer member 6.

[0114] The resin sheet is wound in a roll shape on the outer peripheral surface of the winding core 1 to form a resin sheet roll body 2. The resin sheet is wound in a roll shape on the outer peripheral surface of the winding core 1 except for both end portions.

[0115] The storage member 5 is a member that stores the roll body 2. The storage member 5 includes a bottom member 51, a first side plate member 52, a second side plate member 53, a third side plate member 54, a fourth side plate member 55, and a cover member 56. For convenience of illustration, part of the storage member 5 is omitted in Fig. 7.

[0116] The buffer member 6 is disposed on the upper surface 51a side of the bottom member 51 of the storage member 5, and the roll body 2 is disposed on the upper surface 6a side of the buffer member 6. The upper surface 6a of the buffer member 6 and the roll body 2 are in contact with each other. More specifically, the upper surface 6a of the buffer member 6 has a recess, and the recess of the buffer member 6 is in contact with the roll body 2. The roll body 2 is placed in the recess of the buffer member 6. The roll body 2 is placed on the upper surface 6a of the buffer member 6.

[0117] In the roll packaging body 90A, the roll body 2 is placed horizontally. Unlike the roll packaging body 90, the roll packaging body 90A does not include a first holding member and a second holding member.

[0118] In the roll package 90A, the axial direction of the winding core 1 is horizontal.

[0119] The roll packaging 90A uses the resin sheet 21 shown in FIG. 5 , similar to the roll packaging 90. In this embodiment, the resin sheet 21 is an interlayer film for laminated glass. In this embodiment, the width direction dimension W of the resin sheet 21 is 130 cm or more. Therefore, the roll packaging 90A has the above configuration (1) and the above configuration (2). However, when the roll packaging 90A has the above configuration (2), the resin sheet 21 does not have to be an interlayer film for laminated glass, and when the roll packaging 90A has the above configuration (1), the width direction dimension W of the resin sheet 21 may be less than 130 cm.

[0120] The preferred configurations of the winding core 1, the roll body 2, and the storage member 5 in the roll packaging body 90A are the same as those described in the "first embodiment," and therefore will not be described here. Also, a winding core 1A may be used instead of the winding core 1.

[0121] In the roll package 90A, the axial direction of the winding core 1 is horizontal. In the roll package, the surface direction of the contact surface between the lower surface of the roll body and the upper surface of the buffer member may be horizontal, and the axial direction of the winding core may be inclined from the horizontal. In the roll package, the surface direction of the lower surface of the roll body may be horizontal.

[0122] Next, the buffer member will be described.

[0123] The buffer member 6 has a first buffer section 61 and a second buffer section 62. In the buffer member 6, the first buffer section 61 is located on the bottom member 51 side of the storage member 5, and the second buffer section 62 is located on the roll body 2 side. The buffer member 6 is located in this manner below the roll body 2. The first buffer section 61 is located between the second buffer section 62 and the bottom member 51, and the second buffer section 62 is located between the roll body 2 and the first buffer section 61.

[0124] The upper surface 6a of the buffer member 6 has a recess. The upper surface of the first buffer section 61 has a recess. The upper surface 62a of the second buffer section 62 has the recess. In the buffer member 6, the upper surface 62a of the second buffer section 62 is the upper surface 6a of the buffer member 6. The recess of the second buffer section 62 (the upper surface 62a of the second buffer section 62) and the roll body 2 are in contact with each other.

[0125] The surface of the buffer member 6 facing the roll body has a curved surface. The surface of the first buffer section 61 facing the roll body has a curved surface. The surface of the second buffer section 62 facing the roll body has a curved surface. The upper surface 6a of the buffer member 6 has a curved surface. The upper surface of the first buffer section 61 has a curved surface. The upper surface 62a of the second buffer section 62 has a curved surface. The curvature of the curved surface of the roll body side and the upper surface 6a of the buffer member 6 is constant in the length direction of the buffer member 6. The curvature of the curved surface of the roll body side and the upper surface of the first buffer section 61 is constant in the length direction of the buffer member 6. However, the curvature of the curved surface of the roll body side and the upper surface 6a of the buffer member 6 does not have to be constant in the length direction of the buffer member 6. The curvature of the curved surface of the roll body side and the upper surface of the first buffer section 61 does not have to be constant in the length direction of the buffer member 6.

[0126] The height of the buffer member 6 from the bottom surface of the buffer member 6 to the maximum depth position of the recess of the buffer member 6 is not uniform in the length direction of the buffer member 6. The length direction of the buffer member 6 is usually the axial direction of the winding core 1. By giving the buffer member 6 this shape, it is possible to satisfactorily place the roll body 2, which has a non-uniform roll diameter along the axial direction of the winding core 1, on the buffer member 6.

[0127] The roll body 2 is in contact with the buffer member 6. The outer peripheral surface of the roll body 2 has a portion that is covered by the buffer member 6. More specifically, the outer peripheral surface of the roll body 2 has a portion that is covered by the second buffer section 62.

[0128] The area ratio of the outer peripheral surface of the roll body 2 covered by the buffer member 6 out of 100% of the outer peripheral surface area of ​​the roll body 2 is preferably 20% or more, more preferably 30% or more, even more preferably 40% or more, particularly preferably 50% or more, preferably 100% or less, more preferably 90% or less, even more preferably 80% or less, and particularly preferably 70% or less. When this area ratio is equal to or greater than the lower limit, the roll body 2 can be well protected. Furthermore, when this area ratio is equal to or greater than the lower limit, the roll body is less likely to shift in position when the roll package is vibrated. When this area ratio is equal to or less than the upper limit, the roll package can be easily manufactured. The area ratio may be 60% or less, 50% or less, or even less than 50%. Note that the above area ratio refers to the area ratio of the outer peripheral surface of the roll body 2 in contact with the buffer member 6 out of 100% of the outer peripheral surface area of ​​the roll body 2.

[0129] In the buffer member 6, the first buffer section 61 and the second buffer section 62 are separable. The buffer member 6 is obtained by placing the sheet-like second buffer section 62 on the upper surface of the first buffer section 61. However, in the buffer member 6, the first buffer section 61 and the second buffer section 62 may be inseparable, or the first buffer section 61 and the second buffer section 62 may be bonded together with an adhesive or the like.

[0130] The first buffer section 61 and the second buffer section 62 are made of different materials. The first buffer section 61 is harder than the second buffer section 62. This configuration can improve the protection performance of the roll body.

[0131] The first buffer section 61 includes, for example, polystyrene foam, plastic cardboard, cardboard, carton, or wood. The first buffer section 61 is preferably made of polystyrene foam, plastic cardboard, cardboard, carton, or wood.

[0132] The second buffer section 62 includes, for example, polypropylene, foamed polypropylene, polycarbonate, foamed polyethylene, eco-plastic, cloth, or carton. The second buffer section 62 is preferably made of polypropylene, foamed polypropylene, polycarbonate, foamed polyethylene, eco-plastic, cloth, or carton.

[0133] The buffer member 6 is in contact with the first side plate member 52 of the storage member 5, and is also in contact with the second side plate member 53 of the storage member 5. The first buffer portion 61 is in contact with the first side plate member 52 of the storage member 5, and is also in contact with the second side plate member 53 of the storage member 5. This further enhances the stability of the roll body.

[0134] The buffer member may be composed of multiple buffer members that contact the roll body at different positions, or multiple buffer members may be combined to contact part or all of the outer circumferential surface of the roll body. As an example, in FIG. 6 and other figures, two buffer members 6 may be prepared, one below the roll body 2 and the other inverted and located above the roll body 2. In a buffer member (e.g., a buffer member above the roll body), a first buffer section may be located on the lid member 56 side of the storage member 5, and a second buffer section may be located on the roll body 2 side. The first buffer section may be located between the second buffer section and the lid member 56, and the second buffer section may be located between the roll body 2 and the first buffer section.

[0135] The buffer member 6 will be further described below with reference to FIG.

[0136] FIG. 8 is a perspective view of the buffer member 6. The upper surface 6a of the buffer member 6 has a recess. This recess forms a curved surface on the upper surface 6a of the buffer member 6. In the longitudinal direction X of the buffer member 6, the height from the bottom surface 6b of the buffer member 6 to the maximum depth position of the recess of the buffer member 6 is not uniform. In the longitudinal direction X of the buffer member 6, the height from the bottom surface 6b of the buffer member 6 to the deepest part of the upper surface of the buffer member 6 varies. In the buffer member 6, the height from the bottom surface 6b of the buffer member 6 to the deepest part of the upper surface of the buffer member 6 differs between one end side and the other end side of the longitudinal direction X of the buffer member 6.

[0137] In the length direction X of the buffer member 6, the height H1 is the highest height from the bottom surface 6b of the buffer member 6 to the maximum depth position of the recess of the buffer member 6. In the length direction X of the buffer member 6, the height H2 is the lowest height from the bottom surface 6b of the buffer member 6 to the maximum depth position of the recess of the first buffer section 61.

[0138] The absolute value of the difference between the heights H1 and H2 is not particularly limited and can be adjusted as appropriate so that the axial direction of the winding core 1 is horizontal.

[0139] The second buffer portion 62 is in a sheet shape. The thickness of the sheet-shaped second buffer portion 62 may be 5 mm or more, 10 mm or more, 60 mm or less, or 30 mm or less.

[0140] In the buffer member 6, the entire upper surface of the first buffer section 61 is covered by the second buffer section 62, but the size of the second buffer section 62 may be smaller than this size. For example, the second buffer section 62 may cover only the surface of the recessed section of the first buffer section 61. The second buffer section 62 may or may not reach the first side plate member 52 and the second side plate member 53 of the accommodating member 5. Furthermore, the second buffer section 62 does not have to be in contact with the upper surface of the first buffer section 61 excluding the recessed section.

[0141] The first buffer section 61 may be made up of one member or a plurality of members.

[0142] The first buffer section will be further described below with reference to FIGS.

[0143] Fig. 9 is a front view showing another example of a first buffer section that can be used in the present invention. Fig. 10(a) is a plan view of a lower member included in the first buffer section shown in Fig. 9, Fig. 10(b) is a front view of the lower member included in the first buffer section shown in Fig. 9, and Fig. 10(c) is a side view of the lower member included in the first buffer section shown in Fig. 9. Fig. 11(a) is a plan view of an upper member included in the first buffer section shown in Fig. 9, Fig. 11(b) is a front view of the upper member included in the first buffer section shown in Fig. 9, and Fig. 11(c) is a side view of the upper member included in the first buffer section shown in Fig. 9.

[0144] The first buffer section 61A has a lower member 611 with an inclined surface and an upper member 612 with a curved surface. The lower member 611 has a first lower member 611A, a second lower member 611B, and a third lower member 611C. The upper member 612 has a first upper member 612A and a second upper member 612B.

[0145] The lower member 611 is made up of three members, and the upper member 612 is made up of two members, so that the first buffer section 61A is made up of five members.

[0146] In the first buffer section 61A, the lower member 611 and the upper member 612 are separable.

[0147] The lower member 611 is separable into a first lower member 611A, a second lower member 611B, and a third lower member 611C. When the lower member 611 is divided into three equal parts in the longitudinal direction, the thickest member is the first lower member 611A, the thinnest member is the third lower member 611C, and the member disposed between the first lower member 611A and the third lower member 611C is the second lower member 611B. The upper surfaces of the first lower member 611A, the second lower member 611B, and the third lower member 611C form an inclined surface of the lower member 611.

[0148] In the upper member 612, the first upper member 612A and the second upper member 612B are separable. The first upper member 612A and the second upper member 612B have the same shape. The curved surface of the upper surface of the upper member 612 is formed by the curved surface of the upper surface of the first upper member 612A and the curved surface of the upper surface of the second upper member 612B. The curvature of the curved surface of the upper surface of the first buffer section 61A is constant in the length direction of the first buffer section 61A.

[0149] The first lower member 611A, the second lower member 611B, and the third lower member 611C are made of the same material. The first upper member 612A and the second upper member 612B are made of the same material. Therefore, the lower member 611 and the upper member 612 are made of the same material.

[0150] (Third embodiment: modified example of roll package (B)) Fig. 12 is a front cross-sectional view of a roll package according to a third embodiment of the present invention. Fig. 12 is a front cross-sectional view showing the roll package (B). For convenience of illustration, part of the storage member 5 is omitted in Fig. 12.

[0151] The roll package 90B includes a core 1, a roll 2 of a resin sheet, a first holding member 3, a second holding member 4, a storage member 5, and a buffer member 6.

[0152] The roll packaging body 90B differs from the roll packaging body 90A only in the presence or absence of the first holding member 3 and the second holding member 4. Although the roll packaging body 90B is provided with the first holding member 3 and the second holding member 4, the winding core 1 and the roll body 2 are not held in a suspended state, and the roll body 2 is placed on the upper surface 6a side of the buffer member 6. The upper surface 6a of the buffer member 6 and the roll body 2 are in contact with each other.

[0153] The preferred configurations of the winding core 1, the roll body 2, and the storage member 5 in the roll packaging body 90B are as described in the "first embodiment" above, and therefore will not be described again. The preferred configurations of the buffer member 6 in the roll packaging body 90B are as described in the "second embodiment" above, and therefore will not be described again. In addition, the winding core 1 may be replaced by a winding core 1A, and the first buffer section 61 may be replaced by a first buffer section 61A.

[0154] (Fourth embodiment: modified example of roll package (A)) Fig. 13 is a front cross-sectional view of a roll package according to a fourth embodiment of the present invention. Fig. 13 is a front cross-sectional view showing the roll package (A). For convenience of illustration, part of the storage member 5 is omitted in Fig. 13.

[0155] The roll packaging body 90C includes a winding core 1, a roll body 2 of a resin sheet, a first holding member 3, a second holding member 4, a storage member 5, and a buffer member 6.

[0156] The roll packaging body 90 and the roll packaging body 90C differ only in the presence or absence of a buffer member 6. In the roll packaging body 90C, the winding core 1 and the roll body 2 are held in a suspended state by the first holding member 3 and the second holding member 4, while a buffer member 6 is provided below the roll body 2. In the roll packaging body 90C, the bottom of the roll body 2 and the upper surface 6a of the buffer member 6 do not contact each other.

[0157] The preferred configurations of the winding core 1, the roll body 2, and the storage member 5 in the roll packaging body 90C are as described in the "first embodiment" above, and therefore will not be described again. The preferred configurations of the buffer member 6 in the roll packaging body 90C are as described in the "second embodiment" above, and therefore will not be described again. In addition, the winding core 1 may be replaced by a winding core 1A, and the first buffer section 61 may be replaced by a first buffer section 61A.

[0158] (Other Details of the Roll Packaging) The roll packaging according to the present invention has the above-described configuration (1) or the above-described configuration (2). The roll packaging according to the present invention preferably has at least the above-described configuration (1), and more preferably has the above-described configurations (1) and (2).

[0159] In the case of the above configuration (1), the resin sheet is an intermediate film.

[0160] The interlayer film may be an extrusion molded product. The interlayer film preferably has an MD direction and a TD direction. The MD direction is the flow direction of the interlayer film during production. The TD direction is a direction perpendicular to the flow direction of the interlayer film during production and perpendicular to the thickness direction of the interlayer film. The interlayer film is usually wound into a roll on the outer peripheral surface of a winding core along the MD direction.

[0161] The interlayer film for laminated glass is used to obtain laminated glass (use of the interlayer film for laminated glass in laminated glass). The interlayer film for laminated glass is an interlayer film that can be used in laminated glass. The interlayer film for laminated glass is an interlayer film suitable for obtaining laminated glass. The interlayer film for laminated glass is used after being cut to the size of laminated glass. The roll of the interlayer film for laminated glass is used to obtain laminated glass (use of the roll of the interlayer film for laminated glass in laminated glass). The roll of the interlayer film for laminated glass is a roll suitable for obtaining laminated glass. The roll of the interlayer film for laminated glass is used after being cut to the size of laminated glass. The laminated glass comprises a first laminated glass member, a second laminated glass member, and the interlayer film. In the laminated glass, the interlayer film is disposed between the first laminated glass member and the second laminated glass member.

[0162] The first laminated glass member is preferably a first glass plate, and the second laminated glass member is preferably a second glass plate.

[0163] Examples of the first and second laminated glass members include glass plates and PET (polyethylene terephthalate) films. The laminated glass includes not only laminated glass in which an interlayer film is sandwiched between two glass plates, but also laminated glass in which an interlayer film is sandwiched between a glass plate and a PET film or the like. The laminated glass is a laminate including glass plates, and preferably includes at least one glass plate. It is preferable that the first laminated glass member and the second laminated glass member are each a glass plate or a PET film, and that the laminated glass includes a glass plate as at least one of the first laminated glass member and the second laminated glass member. It is particularly preferable that both the first and second laminated glass members are glass plates.

[0164] The present invention will be clarified below by giving specific examples and comparative examples of the present invention, but the present invention is not limited to the following examples.

[0165] The following cores were prepared:

[0166] <Winding core> A winding core having the shape shown in FIG. 3 (made of polypropylene, outer diameter: 16.9 cm, inner diameter at the open end: 15.4 cm)

[0167] <Interlayer film (resin sheet)> Interlayer film (1) (interlayer film produced by the manufacturing method below) Interlayer film (2) (interlayer film produced by the manufacturing method below)

[0168] [Method for producing interlayer film (1)] Preparation of composition for forming first layer: The following components were blended and thoroughly kneaded with a mixing roll to obtain a composition for forming the first layer.

[0169] 100 parts by weight of polyvinyl acetal resin (polyvinyl butyral resin, average degree of polymerization 3000, hydroxyl group content 22 mol%, acetylation degree 13 mol%, acetalization degree 65 mol%), 60 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO), Tinuvin 326 (2-(2'-hydroxy-3'-t-butyl-5-methylphenyl)-5-chlorobenzotriazole, "Tinuvin 326" manufactured by BASF) in an amount that would yield 0.2% by weight of the resulting first layer, and BHT (2,6-di-t-butyl-p-cresol) in an amount that would yield 0.2% by weight of the resulting first layer.

[0170] Preparation of Composition for Forming Second Layer and Third Layer: The following components were blended and thoroughly kneaded with a mixing roll to obtain compositions for forming the second layer and the third layer.

[0171] 100 parts by weight of polyvinyl acetal resin (polyvinyl butyral resin, average degree of polymerization 1700, hydroxyl group content 30.5 mol%, acetylation degree 1 mol%, acetalization degree 68.5 mol%), 38 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO), Tinuvin 326 (2-(2'-hydroxy-3'-t-butyl-5-methylphenyl)-5-chlorobenzotriazole, "Tinuvin 326" manufactured by BASF) in an amount that would result in 0.2% by weight in the resulting second and third layers, and BHT (2,6-di-t-butyl-p-cresol) in an amount that would result in 0.2% by weight in the resulting second and third layers.

[0172] The composition for forming the first layer and the compositions for forming the second and third layers were co-extruded using an extruder to obtain a wedge-shaped interlayer film (1) having a laminated structure of second layer / first layer / third layer. The obtained interlayer film (1) had a minimum thickness (760 μm) at the first end and a maximum thickness (1200 μm) at the second end. The width direction dimension of the interlayer film (1) (the distance between the first end and the second end of the interlayer film (1)) was 185 cm.

[0173] [Method for Producing Interlayer Film (2)] The following infrared reflective film was prepared as the functional film (first layer).

[0174] Nano 90S (3M, multilayer resin film, "Multilayer Nano 90S" manufactured by Sumitomo 3M Limited) was prepared.

[0175] Preparation of Composition for Forming Second Layer: The following components were blended and thoroughly kneaded with a mixing roll to obtain a composition for forming the second layer.

[0176] Polyvinyl acetal resin (polyvinyl butyral resin, average degree of polymerization 1700, hydroxyl group content 30.5 mol%, acetylation degree 1 mol%, acetalization degree 68.5 mol%): 100 parts by weight; triethylene glycol di-2-ethylhexanoate (3GO): 36 parts by weight; Tinuvin 326 (2-(2'-hydroxy-3'-t-butyl-5-methylphenyl)-5-chlorobenzotriazole, manufactured by BASF Corporation under the trade name "Tinuvin 326"): 0.2 parts by weight; BHT (2,6-di-t-butyl-p-cresol): 0.2 parts by weight; magnesium acetate tetrahydrate in an amount sufficient to provide a metal element concentration of 45.6 ppm in the resulting second layer.

[0177] Preparation of a composition for forming a third layer: A plasticizer (3GO) was mixed with 40 parts by weight of a plasticizer, and a third layer was prepared by mixing 0.4 parts by weight of heat-shielding particles (ITO particles) and 0.4 parts by weight of heat-shielding particles (CWO particles; (Cs ０．３３ WO ３ ) particles) in an amount that would result in 0.04 wt % in the resulting third layer, and a phthalocyanine compound ("NIR-43V" manufactured by Yamada Chemical Co., Ltd.) in an amount that would result in 0.008 wt % in the resulting third layer were added and mixed to obtain a plasticizer dispersion. Next, the following components were blended and thoroughly kneaded with a mixing roll to obtain a composition for forming the third layer.

[0178] Polyvinyl acetal resin (polyvinyl butyral resin, average degree of polymerization 1700, hydroxyl group content 30.5 mol%, acetylation degree 1 mol%, acetalization degree 68.5 mol%): 100 parts by weight Total amount of plasticizer dispersion: Tinuvin 326 (2-(2'-hydroxy-3'-t-butyl-5-methylphenyl)-5-chlorobenzotriazole, "Tinuvin 326" manufactured by BASF) 0.8 parts by weight BHT (2,6-di-t-butyl-p-cresol) 0.2 parts by weight Magnesium acetate tetrahydrate in an amount that would result in a metal element concentration of 94.3 ppm in the resulting third layer

[0179] The composition for forming the second layer was extruded using an extruder to obtain a second layer with a thickness of 380 μm. The composition for forming the third layer was extruded using an extruder to obtain a third layer with a thickness of 380 μm. An infrared reflective film (Nano 90S, first layer) was sandwiched between the obtained second layer and the obtained third layer to obtain an interlayer film (2) with a uniform thickness. The width direction dimension of the interlayer film (2) (the distance between the first end and the second end of the interlayer film (2)) was 150 cm.

[0180] <First and second holding members> First and second holding members having the shape shown in FIG. 2 (the first and second holding members are made of wood)

[0181] <Storage Member> The storage member has the shape shown in FIG. 2 (the bottom member, the first side plate member, the second side plate member, the third side plate member, the fourth side plate member, and the cover member are each made of wood).

[0182] <Buffering member> A buffering member having the shape shown in Figure 8 (first buffering section: made of polystyrene foam, second buffering section: made of polyethylene foam). Note that the first buffering section has an upper member made up of two members and a lower member made up of three members, as shown in Figures 9 to 11.

[0183] Example 1 (1) Preparation of interlayer film roll: The obtained interlayer film (1) was wound into a roll on the outer peripheral surface of a winding core to obtain an interlayer film roll.

[0184] (2) Preparation of roll package (A): A first holding member and a second holding member were attached to the bottom member of the housing member. Next, the roll body was housed inside the housing member, and the winding core and the roll body were held in a suspended state by the first holding member and the second holding member. In this way, the roll package (A) was prepared.

[0185] Example 2 A roll package (A) was obtained in the same manner as in Example 1, except that the intermediate film (2) was used.

[0186] (Example 3) (1) Preparation of interlayer film roll: The obtained interlayer film (1) was wound into a roll on the outer peripheral surface of a winding core to obtain an interlayer film roll.

[0187] (2) Preparation of roll package (B): A cushioning member was placed on the top surface of the bottom member of the housing member. Then, a roll body was placed on the top surface of the cushioning member. In this way, a roll package (B) was prepared.

[0188] Comparative Example 1 (1) Preparation of Interlayer Film Roll: The obtained interlayer film (1) was wound into a roll on the outer peripheral surface of a winding core to obtain an interlayer film roll.

[0189] (2) Preparation of Roll Package: The obtained roll was placed vertically on a pallet base.

[0190] (Comparative Example 2) (1) Preparation of interlayer film roll: The obtained interlayer film (1) was wound in a roll shape around the outer peripheral surface of a winding core to obtain an interlayer film roll.

[0191] (2) Preparation of Roll Package: A roll was placed on the top surface of the bottom member of the housing member.

[0192] Comparative Example 3 A roll package was obtained in the same manner as in Comparative Example 1, except that the intermediate film (2) was used.

[0193] (Evaluation) (1) Safety The top side of the obtained roll package was manually pushed horizontally to the ground. As a result, in the roll package obtained in Examples 1 to 3, the roll body did not tip over, improving safety. Furthermore, in the roll package obtained in Examples 1 to 3, the roll package was less likely to collapse when stacked, improving safety. On the other hand, in the roll package obtained in Comparative Examples 1 and 3, the roll body easily tipped over, making it less safe. Furthermore, in the roll package obtained in Comparative Example 2, the roll body moved within the storage member, so the center of gravity was biased toward the end of the roll package, making it more likely to collapse when stacked, making it less safe.

[0194] (2) Quality of the Interlayer Film After the evaluation of "(1) Safety" above, the core and the roll of the interlayer film were removed from the roll package, and the interlayer film was unwound from the core.

[0195] In Examples 1 and 3 and Comparative Example 2, which used the interlayer film (1), laminated glass was produced using the unwound interlayer film, and the distortion of the produced laminated glass was evaluated. As a result, in Examples 1 and 3, no distortion occurred, and the quality of the interlayer film was good. On the other hand, in Comparative Example 2, some distortion occurred, and the quality of the interlayer film was somewhat poor. Note that Comparative Example 1, which used the interlayer film (1), was inferior in safety, so this evaluation was not performed.

[0196] In Example 2 and Comparative Example 3, which used the interlayer film (2), laminated glass was produced using the unwound interlayer film, and the distortion of the produced laminated glass was evaluated. As a result, in Example 2, no distortion occurred and the quality of the interlayer film was good. On the other hand, in Comparative Example 3, some distortion occurred and the quality of the interlayer film was somewhat poor.

[0197] From the above, the quality of the interlayer film was good in Examples 1 to 3, whereas the quality of the interlayer film in Comparative Examples 2 and 3 was somewhat poor.

[0198] A modified example of the interlayer film (1) is an interlayer film in which a heat-shielding material is added to a resin sheet (e.g., the first layer, the second layer, or the third layer). A modified example of the interlayer films (1) and (2) is an interlayer film in which heat-shielding particles are added to a resin sheet (e.g., the first layer, the second layer, or the third layer). A modified example of the interlayer films (1) and (2) is an interlayer film in which an adhesion adjuster is added to a resin sheet (e.g., the second layer or the third layer). In these modified interlayer films, the adoption of the configuration of the present invention significantly improves safety.

[0199] DESCRIPTION OF SYMBOLS 1, 1A... Winding core 1a, 1Aa, 12a... First end 1b, 1Ab, 12b... Second end 2... Roll body (roll body of resin sheet) 3... First holding member 4... Second holding member 5... Storage member 6... Cushioning member 6a... Upper surface 6b... Bottom surface 11... Winding core body 12... Rod-shaped member 21... Resin sheet 21a... First end 21b... Second end 25... First layer 26... Second layer 27... Third layer 51... Bottom member 51a... Upper surface 52... First side plate member 53... Second side plate member 54... Third side plate member 55... Fourth side plate member 56... Cover member 61, 61A... First cushioning section 62... Second cushioning section 62a... Upper surface 90, 90A, 90B, 90C...Roll package 611...Lower member 611A...First lower member 611B...Second lower member 611C...Third lower member 612...Upper member 612A...First upper member 612B...Second upper member W...Width dimension of resin sheet

Claims

1. A roll package comprising: a winding core; a roll body of a resin sheet wound in a roll shape on the outer peripheral surface of the winding core; a first holding member that holds a first end side of the winding core; a second holding member that holds a second end side of the winding core; and a storage member that stores the roll body, wherein the winding core and the roll body are held in a suspended state by the first holding member and the second holding member, and the roll package has the following configuration (1) or (2). Configuration (1): The resin sheet is an interlayer film for laminated glass. Configuration (2): The resin sheet has a width dimension of 130 cm or more.

2. A roll package according to claim 1, comprising the configuration (1).

3. The roll package of claim 1, having the configuration (2).

4. The roll package of claim 1, comprising the configuration (1) and the configuration (2).

5. A roll package according to any one of claims 1 to 4, wherein the storage member has a bottom member, the roll body is disposed above the bottom member of the storage member, and the shortest distance between the top surface of the bottom member of the storage member and the outer peripheral surface of the roll body is 1 cm or more and 30 cm or less.

6. A roll package according to any one of claims 1 to 5, wherein the storage member has a bottom member, the roll body is disposed above the bottom member of the storage member, and the distance between the upper surface of the bottom member of the storage member and the outer peripheral surface of the roll body is not uniform in the axial direction of the winding core.

7. The roll package according to any one of claims 1 to 6, wherein the storage member comprises iron, stainless steel, aluminum, resin, wood, or carton.

8. The roll package according to any one of claims 1 to 7, wherein the resin sheet has a non-uniform thickness in the width direction of the resin sheet.

9. The roll package according to any one of claims 1 to 8, wherein the absolute value of the difference between the maximum thickness of the resin sheet and the minimum thickness of the resin sheet is 100 μm or more.

10. The roll package according to any one of claims 1 to 9, wherein the winding core comprises paper, glass, resin, wood, cloth, or fiber-reinforced plastic.

11. A roll package according to any one of claims 1 to 10, wherein the winding core has a cylindrical winding core body and a rod-shaped member, the axial dimension of the rod-shaped member being longer than the axial dimension of the cylindrical winding core body, the rod-shaped member being inserted inside the cylindrical winding core body, a first end of the rod-shaped member being exposed from the cylindrical winding core body, a second end of the rod-shaped member being exposed from the cylindrical winding core body, the resin sheet being wound in a roll on the outer peripheral surface of the cylindrical winding core body, the first end of the rod-shaped member being the first end of the winding core, and the second end of the rod-shaped member being the second end of the winding core.

12. A roll package according to any one of claims 1 to 11, wherein the first holding member comprises cardboard, carton, wood, resin, aluminum, iron, or stainless steel, and the second holding member comprises cardboard, carton, wood, resin, aluminum, iron, or stainless steel.

13. A roll package according to any one of claims 1 to 12, wherein the axial dimension of the winding core exposed from the end face of the roll body at the first end side of the winding core is 1 cm or more and 40 cm or less, and the axial dimension of the winding core exposed from the end face of the roll body at the second end side of the winding core is 1 cm or more and 40 cm or less.

14. The roll package according to any one of claims 1 to 13, wherein the resin sheet contains a thermoplastic resin.

15. The roll package according to any one of claims 1 to 14, wherein the resin sheet has a functional film.

16. The roll package according to any one of claims 1 to 15, wherein the resin sheet contains a heat-shielding material.

17. The roll package according to any one of claims 1 to 16, wherein the resin sheet contains K or Mg as an adhesion modifier.

18. A roll package according to any one of claims 1 to 17, comprising a buffer member, the storage member having a bottom member, the buffer member being arranged on the upper surface side of the bottom member of the storage member, and the roll body being arranged above the buffer member.

19. A roll package comprising: a winding core; a roll of a resin sheet wound into a roll on the outer peripheral surface of the winding core; a storage member for storing the roll; and a buffer member, wherein the storage member has a bottom member, the buffer member is arranged on the upper surface side of the bottom member of the storage member, the roll body is arranged on the upper surface side of the buffer member, and the upper surface of the buffer member is in contact with the roll body, and the roll package has the following configuration (1) or (2). Configuration (1): The resin sheet is an interlayer film for laminated glass. Configuration (2): The resin sheet has a width dimension of 130 cm or more.

20. A roll package according to claim 19, comprising the structure (1).

21. A roll package according to claim 19, comprising the configuration (2).

22. The roll package of claim 19, comprising the configuration (1) and the configuration (2).

23. A roll package according to any one of claims 19 to 22, wherein the upper surface of the buffer member has a recess, and the height from the bottom surface of the buffer member to the maximum depth position of the recess of the buffer member is not uniform along the length of the buffer member.

24. A roll package according to any one of claims 19 to 23, wherein the storage member has a first side plate member and a second side plate member, and the buffer member is in contact with the first side plate member of the storage member and also in contact with the second side plate member of the storage member.

25. A roll package according to any one of claims 19 to 24, wherein the buffer member has a first buffer section and a second buffer section, and in the buffer member, the first buffer section is located on the bottom member side of the storage member, and the second buffer section is located on the roll body side.

26. The roll package according to claim 25, wherein the first buffer section and the second buffer section of the buffer member are separable.

27. The roll package according to claim 25 or 26, wherein the first buffer section and the second buffer section of the buffer member are made of different materials.

28. The roll package of any one of claims 25 to 27, wherein the first buffer comprises polystyrene foam, plastic cardboard, corrugated cardboard, carton, or wood; and the second buffer comprises polypropylene, expanded polypropylene, polycarbonate, expanded polyethylene, eco-plastic, cloth, or carton.

29. The roll package according to any one of claims 25 to 28, wherein the upper surface of the second buffer portion of the buffer member has a curved surface.

30. The roll package according to any one of claims 19 to 29, wherein the resin sheet has a non-uniform thickness in the width direction of the resin sheet.

31. The roll package according to any one of claims 19 to 30, wherein the absolute value of the difference between the maximum thickness of the resin sheet and the minimum thickness of the resin sheet is 100 μm or more.

32. The roll package according to any one of claims 19 to 31, wherein the resin sheet contains a thermoplastic resin.

33. The roll package according to any one of claims 19 to 32, wherein the resin sheet has a functional film.

34. A roll package according to any one of claims 19 to 33, wherein the resin sheet contains a heat-shielding material.

35. The roll package according to any one of claims 19 to 34, wherein the resin sheet contains K or Mg as an adhesion modifier.

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