JP4188565B2 - Improved cardboard packaging unit for information storage discs, especially compact discs - Google Patents

Description

[0001]
(Technical field)
The present invention relates to a packaging unit such as cardboard for an information storage disk, which is a packaging unit of the type described in the preamble of claim 1 above.
[0002]
(Background technology)
Such a packaging unit is described in the specification WO / 97/38919. It is roughly square and consists of a flat casing and envelopes inserted in a drawer-like manner so that no more than about half of its dimensions can be extracted. Preferably, the envelope is punctured in part and folded, and also has a separation plate and a bottom plate located below. The disc can be placed on top of the separation plate and held on the separation plate by at least one flap in the separation plate, which is folded over the edge of the disc. One or more flaps in the separation plate and lid flaps hold the disk substantially fixed in place in the packaging unit. A folder called a booklet can be inserted between the separation plate and the bottom plate.
[0003]
It is clear that the obvious drawback of this structure occurs in some extreme climatic conditions. The flaps that remain folded down will inevitably be in a completely symmetrical arrangement, and if you try to do so, it will interfere with the removal and return of the disc, for example in the open state. Thus, a certain bending moment remains on the disc. This bending moment is also increased by supporting the required compact disc around the center hole against a substrate with a ring, which is itself molded into a compact disc. When stored at a high temperature for a long period of time, it can cause permanent bending of the plastic, and therefore, when a disc is applied, it cannot "bounce" and maintain a certain distance to the recording head. The magnitude of this effect depends on the material used, the time during which the disk undergoes elastic deformation, and the storage temperature. This also means that if the storage time is long, a very good material can be permanently deformed even at a moderate room temperature. General demands on mere plastic materials are reduced and deformation problems are increased.
[0004]
According to the invention, this problem is solved and the advantages of the invention are obtained by a packaging unit of the kind mentioned at the outset and have the features described in the characterizing part of claim 1. Thereby, in particular, the packaged disk is not subjected to any other forces besides those caused by its size and weight. The discs in the packaging unit are usually considered to have very little force when stored in an upright state. As long as it is at least a packaging unit, it itself is not deformed externally, so that damage by the deformation in question can no longer occur.
[0005]
(Disclosure of the Invention)
Further in accordance with a preferred embodiment of the present invention, the information storage layer of the disc attempts to avoid as much as possible contact with the substrate that can cause wear damage. If the peripheral protruding support element supports the disc in an area not used for recording, it is sufficient in itself. When a disc is recorded from outside near the center, margins often spread around the periphery. However, according to a valid reference value, the margin should not be wider than 1.7mm for a standard disc similar to a normal compact disc. In this case, in order to ensure that the information layer clears the substrate, in another embodiment, a support element, such as its highest point protrusion, is placed on a circle larger than the outer periphery of the disc, thereby making the edge of the disc The portion rests against those protruding portions that face the center and are inclined toward it.
[0006]
Other dependent claims describe further preferred embodiments according to the invention.
[0007]
(Best Mode for Carrying Out the Invention)
The present invention will now be described with reference to the embodiments shown in the accompanying drawings and not limited thereto.
[0008]
The material such as cardboard shown in FIG. 1 has a bottom plate 80 beyond which a lid flap 73 is folded at folds 71, 72 that determine the thickness of the envelope and beyond the bottom plate. Folded and rounded separator plate 74 and flaps 76, 76 'and 76 ". Separator plate fold line 75 forms a boundary between bottom plate 80 and separator plate 74. Then, both fold lines 77 and 78 are arranged on the outer side along the perforated flap 76, and the distance between the fold lines roughly corresponds to the thickness of the completed envelope, similar to the fold lines 71 and 72. The flap 76 forms a stop flap, which will be described in more detail below: The fold line 79 is formed after the envelope has been extracted from the casing and the packaged die. It acts so as to facilitate the handling of the click.
[0009]
The casing material shown in FIG. 2 has an upper portion and a bottom portion 84 of the same dimensions, both suitable and corresponding to the insertion of the bottom plate 80 and the envelope member belonging thereto. When assembled and bonded together by the side flaps, the material has a flap 81 that folds inwardly into its opening. The flaps splash downward and the flaps 76 (FIG. 1) splash upwards, preventing the flaps from being stuck together and being pulled out. This is illustrated in detail in FIG. 3 in a partial cross-sectional view, showing the separation plate supporting the disk P and the partially extracted envelope.
[0010]
As a convenient grip when extracting the envelope, the envelope has a hole 85 (see FIG. 3), which coincides with the hole 89 (see FIG. 2) in the open casing at the insertion position.
[0011]
In FIG. 3, it is also clearly shown how the disk P is protected from lateral movement by means of flaps 76, 76 'and 76 ", so that another side obstruction is lowered in the insertion position. It can be easily understood that it is formed by the lid flap 73 that is folded to the side and the narrow wall of the casing.
[0012]
According to the present invention, a small stamping 86 is made at the edge of the separation plate, see FIG. 1, stamping forms a protrusion at the edge, while the disc rests on the outer periphery. In addition, the folding notch for the flap is doubled, as can be seen in FIG. 1, so that the inserted disc can no longer be pushed against the surface of the separating plate.
[0013]
According to a preferred embodiment, the protrusion is arranged as a boss with its central part located outside the edge of the disk, with the disk resting against the boss. As is apparent from FIGS. 4 and 5, the separation plate 74 'is not the same shape as the disk, but instead extends at least in some parts beyond the disk. Thereby, in FIG. 4, such a boss 88 is somewhat pushed into the cardboard material, which can itself work in connection with punching. Also, the material in FIG. 4 is similar to the material in FIG. In addition, the material in FIG. 5 is provided with a boss 89 on its bottom plate, which is extruded from the opposite direction, which is typically done in a separate manufacturing step associated with the material.
[0014]
A booklet, ie a normal confinement folder, can also have a corresponding boss (not shown).
[0015]
FIG. 6 schematically shows how the disks are arranged according to a preferred embodiment of the present invention. The disk P is placed on a separating plate 74 ', only a part of the disk P has its circular rim R extending around the center (not shown), an information area I arranged outside the rim, and information Is shown with a blank portion M that is empty and not less than 1.7 mm according to the effective criteria. The drawings are essentially enlarged to a certain extent. The boss 88 has its symmetry line 90 on the outside of the edge of the disk, and the edge of the disk is supported against the inwardly inclined portion of the boss, thereby supporting the disks together with the rim R. is doing. Certain small lateral movements are possible from the drawings within the manufacturing accuracy that is particularly obtained with respect to the arrangement of the tongues 76 ', 76 "and 73.
.
[0016]
FIG. 7 shows the envelope before insertion into the casing, with the boss 8 and the disc P supported by a central circular rim (not shown). Except as explained above, the bottom portion has a side recess 100, which is located in front of the side edge of the disc and when the envelope is pulled out to the stop position, the disc P It can be gripped stably so as to cross.
[0017]
In most cases, the space under the separator plate is easily used to wrap a small folder, in which text is about music, other items, and instructions, such as a short manual for computer discs, etc. Insert. However, according to the inventive concept, the possibility of packaging a second compact disc under the separating plate with a corresponding protection method is foreseen. Also in this case, as a result, a protrusion having the same characteristics as the boss 87 shown in FIG. 1 is appropriately arranged on the bottom plate 80. Considering that the material is folded in FIG. 1, if the boss is formed as stamping, the boss 86 and boss 87 must be directed upward in the completed envelope according to FIG. In this case no special flaps are arranged to hold the disc, which is unnecessary if the disc is not fully recorded and consequently has an unrecorded margin, It is suitable to provide a larger support element on the bottom plate, which support action takes place in spite of the possibility of a large movement, in particular in the extraction direction of the envelope.
[0018]
Currently, each support boss 86 and 87, 88, 89 is for use with a stamping tool, preferably with a plunger and a die, and the support element can be used in many different ways, such as adhesive drops of adhesive. It can be arranged by a flap that is cut horizontally and small. All of that is transformed so that it is readily available to those skilled in the art.
[Brief description of the drawings]
FIG. 1 Envelope material.
FIG. 2 Material for envelope casing.
FIG. 3 is a partial sectional view of a folding and assembling apparatus with a compact disc inserted.
FIG. 4 shows a second embodiment of an envelope material.
FIG. 5 shows a third embodiment of an envelope material.
FIG. 6 is a schematic partial sectional view showing how a compact disc is supported by an envelope according to the second or third embodiment.
FIG. 7 shows an easily folded envelope according to a second embodiment with a disc inserted.

Claims (6)

A packaging unit made of circular information storage discs, especially cardboard for compact discs, etc., consisting of a flat rectangular casing with side openings on the short side and a storage envelope that can be inserted into and removed from the casing Consisting of
The casing and the envelope comprise block flaps (76, 81) which cooperate so that the block position is not exceeded after the initial insertion of the envelope;
A bottom portion (80) whose envelope corresponds to the inner space (84) of the casing, a separation plate (74) folded upward in the inner space of the casing, and folded to be opposite to the insertion end of the bottom portion A flap (76) that forms the block flap of the envelope at the end located at the end, and a lid flap (73) that is folded upward, the lid flap being pulled out to the block position The separation plate has a length such that it is not covered by the casing, and the separation plate is folded along the periphery of the disk to be packaged and upward with respect to the periphery to hold the disk on the separation plate Holding tongues (76, 76 ', 76 "),
The separating plate (74) comprises projecting support elements (86, 88) arranged at the periphery of the disk to be packaged, the holding tongues (76, 76 ', 76 ") are folded by the folds, the folds being held The tongue is formed to be spaced from the separating plate (74), the plane of the holding tongue partially extending above the disk to be packaged ,
The protruding support element is formed by a plurality of bosses arranged around the periphery, such that the boss has a maximum height (90) outside the circle corresponding to the circumference of the disk to be packaged. A packaging unit, wherein a peripheral portion of a disk to be disposed and packaged contacts a portion of the boss inclined in the central direction . 2. A packaging unit according to claim 1, characterized in that the projecting support elements are formed by driving deformation against the material of the separating plate (74) . The packaging unit according to claim 1, characterized in that the boss is adhered to the surface of the separation plate (74) . 4. A packaging unit according to any one of claims 1 to 3, characterized in that the protruding support element has a height suitable for the height of the rim (R) arranged near the center of the disc . The booklet is inserted under the separation plate, the booklet facing the separation plate, and provided with a projecting support element that supports the peripheral edge of the second disc inserted between the booklet and the separation plate. The packaging unit according to any one of claims 1 to 4 . A protruding support element is arranged on the bottom plate (80) which supports the second compact disc at its periphery, and the second compact disc is housed between the bottom plate and the separation plate (74). The packaging unit according to any one of claims 1 to 4 .

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