JP3813041B2 - Rolled material for paper suspension - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper suspension member for holding a roll of photosensitive material or the like in a suspended state.
[0002]
[Prior art]
When a roll-shaped object is placed directly, there is a problem that a concentrated load is locally applied by its own weight, and the roll-shaped object is deformed or locally damaged. The above problems are particularly serious in rolls such as plastic films and aluminum foils having a thickness of several tens of μm to several hundreds of μm, and photosensitive materials that are liable to cause quality damage such as fogging due to external pressure. Therefore, a device is devised for the packaging form at the time of storage and transportation.
[0003]
For example, a cushioning material such as a foamed resin has been generally used in the space between the outer box and the roll-like material, but the effect is not sufficient for the time and effort. Therefore, a method of hanging in the air has been adopted for rolls such as photosensitive materials.
[0004]
FIG. 8 is a disassembled perspective view showing a suspended state of a roll-shaped object in an exterior box (not shown). On both end faces of the roll-like object 11, a roll-like shape is formed by a suspension member 15 comprising a holding shaft 13 that is inserted into the hollow portion of the winding core 12 and holds the winding core, and a side plate 14 that fixes the holding shaft 13. The object 11 is held in a suspended state.
[0005]
Conventionally, the suspension member has been formed by integrally molding the holding shaft and the side plate with a plastic resin, but there is a problem that the cost (running cost including the cost of a molding die, etc.) is high, and There were environmental problems related to the disposal of plastic resin.
[0006]
Under such circumstances, a paper suspension member has been studied. For example, Japanese Patent Application Laid-Open No. 10-181789 proposes a paper suspension member in which cardboards are stacked. This paper suspension member has the same strength as the plastic resin molded product in terms of strength, but the side plate and the holding shaft are not sufficiently fixed, resulting in problems due to this. If the holding shaft and the side plate are not fixed enough, the holding shaft will rotate (in the case of a cylindrical holding shaft), the holding shaft will be displaced or pulled out, or the holding shaft will be tilted. There was a problem that could not be maintained stably. In particular, it is important that the holding shaft is fixed perpendicularly to the side plate. However, if the holding shaft is insufficiently fixed, the holding shaft is inclined, and the suspended state cannot be maintained.
[0007]
Further, the suspension member disclosed in the above Japanese Patent Laid-Open Publication has a holding shaft fixed to the outside of the side plate using a fixing auxiliary member, but when stored in an exterior box, the fixing auxiliary member protruding from the side surface of the side plate However, the adhesion between the side plate in the outer box and the inner surface of the outer box is hindered, and the suspension member may move or tilt due to vibration during transportation, which may cause a problem in the suspension in a stable state. Such a problem was particularly serious in the following cases. In other words, from the standpoint of general use of the outer box, rolls of various sizes may be stored in the outer box of the same size. In this case, a spacer such as polystyrene foam is interposed between the suspension member and the inner surface of the outer box. Inserted. In this case, the foamed polystyrene is deformed or scraped by the pressure of the fixing auxiliary member protruding from the side plate, so that it no longer serves as a spacer. Inconveniences such as detachment from the core, damage to the roll, the core, or the flange of the light-sensitive material for loading into the bright room occurred.
[0008]
[Problems to be solved by the invention]
Accordingly, an object of the present invention is to provide a paper suspension member for a roll-like material that can solve the above-described problems and can more stably maintain the suspended state of the roll-like material in the exterior box.
[0009]
[Means for Solving the Problems]
The above object of the present invention is a paper suspension member for holding the core and holding the roll in a suspended state on both end faces of the roll wound around the core. Inserted between a side plate obtained by folding and stacking one corrugated cardboard sheet, a holding shaft for holding the core inserted in a substantially central cutout portion of the side plate, and the corrugated cardboard sheet on which the side plates are superimposed. A roll-shaped article comprising: a piece of the paperboard, a part of the paperboard being fitted into a cut portion of the holding shaft, and a corrugated cardboard sheet constituting the paperboard and the side board fixed by an adhesive . Of paper suspension members.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail. FIG. 1 is a front view showing an embodiment of the suspension member of the present invention, and FIG. 2 is a side view. 3 is a developed view of the side plate, FIG. 4 is a perspective view showing a joining state of the holding shaft and the paperboard, FIG. 5 is a perspective view of the holding shaft, and FIG. 6 is a plan view of the paperboard. The suspension member of the present invention includes at least a side plate 1, a holding shaft 2, and a paperboard 3. The size and shape of the side plate 1 are preferably matched to those of the outer box, and are generally square.
[0011]
A holding shaft 2 for holding the roll core is inserted into a circular cutout portion 1 a having substantially the same shape as the holding shaft 2 provided at a substantially central portion of the side plate 1. Here, the side plate 1 is formed of corrugated cardboard, and the holding shaft 2 is formed of a cylindrical paper core (paper tube) using kraft pulp or the like.
[0012]
FIG. 3 a is a development view of one cardboard sheet constituting the side plate 1. A dotted line 1b is a ruled line for folding the corrugated cardboard sheet, and is bent along the ruled line 1b to form a substantially square side plate 1. The semicircular cutouts 1c at both ends of the cardboard sheet correspond to the central circular cutout 1a when the cardboard sheets are folded and overlapped. The ruled line 1b is preferably provided with a depth of about 0.5 to 1 mm and a width of about 1.1 to 3 mm, and is preferably provided on a surface opposite to the bending direction. In the present invention, the cardboard sheet constituting the side plate 1 is preferably a double-sided cardboard as shown in FIG.
[0013]
In the corrugated cardboard sheet, the interval Y between the ruled line is for forming a gap that allows insertion of the paperboard 3 and preferably the corrugated cardboard sheet 4 as shown in FIG. 2 when the corrugated cardboard sheet is folded and overlapped. It is. Here, the corrugated cardboard sheet 4 is not essential in the present invention, but is preferably used when the weight of the roll-like object suspended in the air is large (for example, 3 kg or more).
[0014]
FIG. 3B shows another embodiment of the development of one corrugated cardboard sheet constituting the side plate 1. FIG. 3a shows a double superposition, while FIG. 3b shows a triple superposition mode, and the others are the same as FIG. 3a.
[0015]
FIG. 4 is a perspective view showing a joining state of the holding shaft 2 and the paperboard 3. Prior to inserting the holding shaft 2 into the side plate 1, the holding shaft 2 and the paperboard 3 are joined. As shown in FIGS. 5 and 6a, the holding shaft 2 is provided with a cut portion 2a, and a part 3a of the paperboard is fitted and joined to the cut portion 2a. The paperboard 3 is provided with a cut 3b so that the holding shaft 2 and the paperboard 3 can be easily joined. Further, in order to further facilitate the joining of the two, the paperboard 3 may be joined in a state of being separated into two in an oblique direction or a vertical direction as shown in FIG. 6b. Furthermore, you may isolate | separate into 3 or more. In the case of the embodiment in which the paperboard 3 is separated, it is important that each of the separated pieces has a part 3a of the paperboard that fits into the cut portion 2a of the holding shaft 2.
[0016]
There may be only one combination of the cut portion 2a of the holding shaft 2 and the part 3a of the paperboard 3, but it is preferably two or more. In the case of 2 or more, it is preferable to provide it at the opposing position. In FIG. 5, the cut portion 2 a is provided so as to penetrate the cylindrical holding shaft 2. As described above, when the holding shaft 2 is a paper core (paper tube), its thickness (thickness). If is thick, it may be cut so as not to penetrate. In order to more stably fix the holding shaft 2 to the paperboard 3, the cut portion 2 a is provided so as to penetrate the holding shaft 2, and is inserted so that a part 3 a of the paperboard 3 protrudes into the hollow inside of the holding shaft 2. It is preferable to do.
[0017]
The present invention is characterized in that the holding shaft is fixed with a paperboard inserted between the corrugated sheets of the corrugated board and the corrugated sheets of the side plates obtained by folding and stacking one corrugated cardboard sheet, and the fixing means is characterized in that It is. By using such means for fixing the holding shaft, the holding angle of the holding shaft can be stably maintained in a vertical state with respect to the side plate, and inconveniences such as rotation, displacement and disconnection of the holding shaft are eliminated. Accordingly, the paperboard needs to have a certain degree of strength, and the thickness is preferably 1 mm or more, particularly preferably about 1.5 to 4 mm. The shape and size of the paperboard is preferably comparable to that of the side board, in this case approximately square.
[0018]
As shown in FIG. 2, it is important that the holding shaft 2 does not protrude much on the side plate 1 opposite to the side holding the roll core. Even if it protrudes, it should be within a few mm. In that sense, the length L of the holding shaft 2 protruding from the paperboard 3 in FIG. 4 is preferably equal to or less than the thickness of the corrugated cardboard sheet constituting the side plate. Further, when the cardboard sheet 4 in FIG. 2 is inserted on the opposite side with respect to the paperboard 3, the protruding length L can be made long enough not to protrude from the side plate. The cardboard sheet 4 shown in FIG. 2 can also be inserted on both sides of the paperboard 3.
[0019]
In the present invention, it is preferable to fix both sides or one side of the paperboard 3 to the side plate 1 with an adhesive, and more preferably to fix both sides. As described above, when the corrugated cardboard sheet 4 is interposed between the paperboard 3 and the side board 1, the space between them is fixed with an adhesive.
[0020]
Next, the procedure for producing the suspension member will be described. With the corrugated cardboard sheet 1 of FIG. 3 in the state of development, the corrugated cardboard sheet 4 is bonded with an adhesive. As shown in FIG. 4, with the holding shaft 2 and the paperboard 3 joined in advance, the holding shaft 2 is inserted into the circular cutout portion 1a of the cardboard sheet 1 from the side of the cardboard sheet 4, and the cardboard sheet 4 and the paperboard 3 are bonded with an adhesive. Paste together. Next, the corrugated cardboard sheet 1 (development drawing) is folded and superposed along the ruled line 1b, and is bonded to the paperboard 3 with an adhesive to complete.
[0021]
The holding shaft used in the suspension member of the present invention is generally a case where the roll core is cylindrical, and thus it is convenient to use a cylindrical paper tube as described above. The shape of the holding shaft is not particularly limited as long as it can be inserted into the hollow part of the roll core, and a rectangle, a triangle, or the like can be used.
[0022]
【Example】
Next, the superiority of the paper suspension member of the present invention will be described based on the results of practical tests.
[0023]
Example 1
The following two types of suspension members were created.
A (the present invention): A paper suspension member having the structure shown in FIGS.
B (comparative example): Paper suspended member described in Example 1 of JP-A-10-181789.
[0024]
A photographic photosensitive film material (weight: about 8 kg) having a width of 812 mm and a winding length of 61 m was wrapped as a roll-like product in the exterior box in a suspended state using the above-mentioned suspension member. Twenty pieces of each package were prepared for both the present invention and the comparative example.
[0025]
A drop test (according to JIS-Z0202) and vibration test (according to JIS-Z0232) were performed on the above two types (40). As a result, according to the present invention A, all 20 rolls were securely held in a suspended state, but in Comparative Example B, 10 out of 20 rolls were suspended due to inclination, displacement, etc. of the holding shaft. It could not be kept in the state.
[0026]
Example 2
In the same manner as in Example 1, the suspension members of the present invention A and comparative example B were prepared. A photographic photosensitive film material (weight: about 5 kg) having a width of 508 mm and a winding length of 61 m was packaged as a roll-like product in the outer box in a suspended state using the above-mentioned suspension member. When housed in the exterior box, a 1.5 cm thick polystyrene sheet (spacer) for filling the space was inserted between the side plate of the suspension member and the inner surface of the exterior box.
[0027]
A drop test (according to JIS-Z0202) and a vibration test (according to JIS-Z0232) were performed on the above two types. As a result, in the present invention A, the roll-like object was reliably held in the suspended state, but in Comparative Example B, the foamed polystyrene sheet was deformed, the suspension member was tilted, and the roll-like object could not be held in the suspended state. It was.
[0028]
【The invention's effect】
By using the paper roll-like object suspension member of the present invention, the roll-like object can be more stably maintained in the suspended state.
[Brief description of the drawings]
FIG. 1 is a front view of a suspension member according to the present invention.
FIG. 2 is a side view of the same.
FIG. 3 is a development view of a side plate of the suspension member according to the present invention.
FIG. 4 is a perspective view of a state in which the holding shaft of the suspension member of the present invention and the paperboard are joined.
FIG. 5 is a perspective view of a holding shaft of the suspension member according to the present invention.
FIG. 6 is a plan view of the paperboard of the suspension member of the present invention.
FIG. 7 is a cross-sectional view of a double-sided cardboard.
FIG. 8 is a disassembled perspective view showing a suspended state of a roll-like object.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Side board 2 Holding shaft 3 Paperboard 4 Corrugated paper sheet 21 Medium shin 22 Liner

Claims (1)

A paper suspension member for holding the core and holding the roll in a suspended state on both end faces of the roll wound around the core, wherein one corrugated sheet is It comprises at least a folded side plate, a holding shaft for holding the core inserted in a substantially central cutout of the side plate, and a paperboard inserted between the corrugated cardboard sheets on which the side plates are overlapped. A roll-like paper suspension member, wherein a part of the paperboard is fitted into a cut portion of the holding shaft, and the corrugated cardboard sheet constituting the paperboard and the side plate is fixed with an adhesive .

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