JPH08324665A - Monolithic cd storing case - Google Patents

Abstract

PURPOSE: To obtain a paper-made CD(compact disc) storing case that is lightweight and excellent in impact resistance and heat resistance, by a method wherein a square base paper made of two-side corrugated board with a thickness within a specified range is formed into the CD storing case by press-hot deep drawing. CONSTITUTION: A sheet of thin two-side corrugated board with a thickness of 1.0-1.6mm is integrally formed into a CD storing case 1 by press-hot deep drawing. To store a CD in a stowing part 2, the center hole of the CD is fitted on a protruding fitting part 7 formed at the central part of a recessed part 5 of the storing part 2 and the peripheral place of the central hole is supported on the upside of a protruding mount 6. The inside face of a lid 3 comes in contact with a flange part 8, the downside (or upside) of the CD stowed and the upside of the protruding fitting part 7 to fix the CD stored. Since the recorded side (or downside) of the CD stored is separated from the bottom of the recessed part 5 of the storing part 2 and only the peripheral part of the center hole, i.e., the non-recorded part on the recorded side, is supported, the recorded side is prevented from being contaminated and damaged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case for a compact disc (hereinafter referred to as CD), and more specifically,
The present invention relates to an integrated CD storage case made of thin-faced double-faced corrugated paper that is lightweight, thin, has excellent impact resistance, is easy to manufacture, and can be recycled and incinerated.

[0002]

2. Description of the Related Art As an individual packaging case for a CD, a recess for accommodating the CD is formed by molding plastic, and a convex portion for fitting the CD into the center hole of the CD and fixing the CD is formed. Those having trays formed with are generally used.

In the case of the above CD case, the CD is taken out by removing the CD from the convex portion fitted in the center hole of the CD. Since the parts are tightly fitted to each other, when the finger is put on the peripheral edge of the CD and the CD is separated, the finger may touch the recording surface of the CD to contaminate or damage the recording surface.

In order to eliminate such troubles when the CD is separated from the convex portion in the tray, it is also proposed that the convex portion is configured to have expansion elasticity to facilitate fixing and separating of the CD. (Japanese Utility Model Publication No. 4-50694). However, the process of forming such an expanded elastic structure in the recess of the plastic tray is complicated, and an increase in cost cannot be avoided. Further, these materials have a problem of waste disposal because the main material is plastic.

[0005]

DISCLOSURE OF THE INVENTION The present invention does not have the problems of the CD case mainly composed of the plastic material as described above, and the CD can be stored and taken out easily.
An object of the present invention is to provide a paper CD storage case that is low in manufacturing cost, can be disposed of, and can be reused when necessary, is lightweight, has excellent impact resistance, and has excellent heat insulating properties. Is.

[0006]

Means for Solving the Problems The present invention for solving the above problems is formed by pressing hot deep drawing a square base paper made of double-faced corrugated paper having a thickness of 1.0 mm to 1.6 mm. And a convex circular CD placing portion having a CD storage portion and a lid portion with a central bent portion sandwiched therebetween, the CD storage portion having an upper surface abutting on a peripheral portion of a central hole of the storage CD. And a convex fitting portion that protrudes concentrically from the upper surface of the mounting portion and that is loosely fitted into the central hole of the storage CD.
The present invention resides in an integrally molded CD storage case characterized by having a D storage recess and a flange portion forming the peripheral edge of the recess.

The present invention also resides in the above-mentioned CD storage case in which an arbitrary side of the CD storage section is formed with a binding portion of a predetermined width extending outwardly from the side through a bent portion.

Further, the present invention resides in the CD storage case, wherein the CD storage portion has a plurality of the CD storage recesses.

The base paper used for manufacturing the CD storage case of the present invention is a thin-faced double-faced cardboard paper. As double-sided cardboard, the height of the corrugated core is 1.1 mm ~
1.6 mm, 93 ± 5 pitch E step per 30 cm (E F
lute) corrugated paper or the thinnest type of corrugated paper whose corrugation height is lower than E step cardboard and the number of pitches per 30 cm is higher than E step cardboard. E
In the case of the A-C multi-tiered ball which is thicker than the multi-tiered ball, the hot-deep pressing process causes cracks in the liner portion, and the paper dust generated from the tears contaminates the CD surface, which is not preferable.

Examples of double-sided corrugated paper which can be used in the present invention include functional corrugated paper such as conductive corrugated paper having a liner surface with conductivity. Further, a liner made of a reinforcing paper laminated with a non-woven fiber layer can also be preferably used. The CD storage case of the present invention is manufactured by using the above-mentioned thin double-sided corrugated cardboard to form the concave and convex portion and the bent portion which constitute the CD storage portion by the pressing hot deep drawing method. . C
The shape and size of the recess formed in the D storage portion are not particularly limited as long as the CD can be stored, but unless otherwise specified, the recess is substantially equal to the diameter of the CD. It is formed in a circular shape or a square shape having a slightly large inner diameter.

[0011]

In the CD storage case of the present invention, the mechanism for mounting and fixing the CD in the CD storage portion is such that the upper surface of the cylindrical CD mounting projection is the peripheral surface (non-recording surface) of the CD center hole. A cylindrical convex shape that abuts against the CD to support it from below and separates the recording surface of the CD from the bottom surface of the CD accommodating section, and has a diameter smaller than the diameter of the convex section for CD mounting and that can be fitted into the CD center hole. The portion is arranged so as to concentrically project from the upper surface of the CD-mounting convex portion, and functions to limit the lateral movement of the CD. Also, since the convex portion that fits into the CD center hole is loosely fit into the CD center hole, it is easy to pull out the CD from the storage portion, and the lid portion that is folded back at the folding portion stores the CD. It is fixed by pressing.

Further, in the CD storage case of the present invention, only the thin mouth double-faced cardboard is used as the material, and the concave portion of the CD storage portion and the CD mounting convex portion arranged in the concave portion,
Since the convex portion for inserting the CD center hole and the bent portion between the lid portion and the storage portion are integrally formed by pressing hot deep drawing, the weight of the CD storage case is reduced and the manufacturing cost is reduced. The smooth liner surface of the thin double-faced cardboard paper is easy to print on the case surface.

[0013]

Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to these embodiments. FIG. 1 shows a plan view (a) of a CD storage case according to an embodiment of the present invention and a schematic sectional view (b) taken along the line XX ′ of the plan view (a). FIG. 2 is a partially cutaway perspective view of the thin-faced double-faced corrugated paper used in the production of the CD storage case of the present invention, and FIG. 3 is the double-faced corrugated paper 11 shown in FIG. The longitudinal cross-sectional views (b) to (e) showing various states of the pressing portion at the time are shown. 4 to 7
FIG. 8 is a diagram showing a CD storage case showing another embodiment of the present invention. FIG. 8 is a diagram showing a state where CDs are stored in a CD storage case, and FIG. 9 shows an example in which the CD storage case is bound in a magazine.

In FIG. 1A, a CD storage case 1
Has a CD storage portion 2 and a lid portion 3, and is configured such that the lid portion 3 is folded back from the central bending portion 4 so as to cover the storage portion 2. The accommodating portion 2 is composed of a circular concave portion 5 having a diameter slightly larger than the diameter of the CD disc to be accommodated, and a collar portion 8. The concave portion 5 is located at the center of the concave portion 5 and has a peripheral edge of the CD central hole. A CD placing portion 6 having a convex portion which abuts its top surface to support the CD, and a CD center hole fitting protruding from the top surface of the CD placing portion 6 as a circular convex portion having a smaller diameter. The part 7 is formed.

The CD storage case shown in FIG. 1A is
The thin double-sided corrugated paper sheet shown in FIG. 2 is integrally formed by pressing hot deep drawing, and has a vertical cross-sectional structure shown in FIG. 1 (b). FIG.
-As shown in (b), the center hole of the CD fits into the convex portion 7 formed in the central portion of the concave portion 5 of the storage portion 2,
The surface of the peripheral portion of the center hole is stored in the CD storage portion 2 in a state of being supported by the top surface of the convex portion 6. When the CD is stored in the storage portion, the lid portion 3 is folded back from the folding portion 4 and the storage portion 2
Cover.

As shown in FIG. 8B, the inner surface of the lid portion 3 has a collar portion 8 of the storage portion 2, a back surface (top surface) of the storage CD, and a convex portion 7.
It plays a role of abutting on the top surface and fixing the stored CD. CD
The CD storage case in the state where it is covered with the lid 3 after the storage of the
The lid 3 is made of an adhesive or the like that is partially arranged at an arbitrary position of the
The closed state of the CD storage section 2 is maintained. As shown in FIG. 8A, the stored CD has a recording surface (downward surface) spaced from the bottom surface of the recess 5 of the storage portion 2, and a central hole which is a non-recording portion on the recording surface side. Since the recording surface is supported only by the peripheral portion, the recording surface is not contaminated or scratched.

As shown in FIGS. 2 and 3 (a), the double-faced corrugated paper 11 used in the present invention is a laminated structure which is composed of a double-sided liner paper 12 and a corrugated core paper 13 and is rich in voids. It is a material with excellent impact resistance and heat insulation, and also has an excellent protection function for stored CDs. Since it is a thin-faced double-faced corrugated cardboard, as shown in FIGS. 3 (b) to 3 (e), it is crushed by pressing hot deep drawing which is a molding method adopted in the present invention. However, the liner and the core do not burst, and the above-mentioned characteristics derived from the fact that the laminated structure is rich in voids are maintained even after molding.

Further, as is clear from the above embodiment,
The CD storage case of the present invention stores a CD because the folded portion for folding back the CD storage portion and the lid portion is integrally formed by deep drawing with double-faced corrugated paper that can be subjected to hot pressing and deep drawing. Since there is no cut portion of the double-faced corrugated cardboard which is a source of paper dust generation in the internal structure portion, the contamination of the CD recording surface by the paper dust does not occur.

4 to 7 show another embodiment of the present invention. In FIG. 4, the CD storage case 1 is shown in FIG.
The binding margin section 9 is provided on one side of the CD storage case 1 on the side of the storage section 2, that is, on the side facing the bending section 4. The binding margin portion 9 is slightly smaller than a portion of the lid portion 3 facing the bent portion 4 when the lid portion 3 is folded back to cover the storage portion and is located on the collar portion 8 of the storage portion 2. Bent part 10 provided on the outside
A plurality of storage cases 1 that extend from the sides of the storage section 2 in a bendable manner and are integrally connected to the outside of the sides, and that close the storage sections 2 with a lid section 3. It is possible to make a product bound at the margin, or to bind the storage case 1 to a magazine or the like as shown in FIG. 9, for example.
This binding margin may be provided on the other side of the CD storage.

FIG. 5 shows a CD storage case of a type having a binding margin in which two storage recesses are provided in the CD storage portion 2 so that two CDs can be stored. Forming a plurality of CD storage parts in this manner is shown in FIG.
It is also possible to use a sheet having no binding margin shown in FIG.

FIG. 6 shows C in the storage case 1 of FIG.
The example which formed the recessed part 5 in D storage part into the square is shown. In this example, as shown in FIGS. 6 (a) and 6 (b), the wall surface 14 of the recess 5 for accommodating the CD is in a tapered state, and the middle portion of the tapered wall surface 14 is C.
D has a structure in contact with the outer edge. With such a structure, the stored CD is not only supported by the central concentric convex portion at the peripheral edge of the central hole but also at the outer peripheral edge that does not affect the recording surface, so that the stored CD is fixed. It can be more certain. Of course, the outer wall 14 of the recess 5 of the storage portion may be structured not to contact the outer peripheral edge of the CD as in the case of FIG.

FIG. 7 shows an example in which the inner wall 14 of the recess 5 of the storage case 1 of FIG. 4 is formed in a tapered shape as in the case of FIG. In this example, the bent portion 4 in the storage case 1
Is formed as a band having a predetermined width by cutting the upper and lower sides. With such a structure of the bent portion, even when the lid portion 3 is folded back to cover the storage portion 2, the lid portion 3 pops up due to the residual stress of the bent portion 4, and This has an advantage that the adhesion between the storage section and the storage section is not broken.

FIG. 8 is a sectional view showing a state where the CD case is stored in the storage case 1 of FIG. 1 (a) and a state where the storage portion 2 is covered with the lid 3 (b). ing. Further, FIG. 9 shows a state where a CD is stored in the storage case 1 of FIG. 6 and is bound in a magazine.

[0024]

As described in detail above, the CD storage case of the present invention is made of thin double-faced cardboard paper, and the storage portion and the lid portion are integrally formed by pressing hot deep drawing from a single base material. Since it is possible, it is possible to configure a storage unit that does not have a cutting surface that is a generation source of paper dust or the like that contaminates the storage CD surface. In addition, it has impact resistance and heat insulation derived from double-sided corrugated paper, which is a material, and has an excellent function of protecting stored CDs, is lightweight, and can be bound to publications such as magazines. , A one-way type CD storage case that can be recycled or incinerated like paper waste such as magazines because it is made of only paper that does not contain materials that are difficult to dispose of such as plastic Have.

[Brief description of drawings]

FIG. 1 is a plan view and a sectional view of a CD storage case.

FIG. 2 is a partial cutaway view of a double-sided corrugated paper used for a CD storage case.

FIG. 3 is a vertical cross-sectional view of a double-sided corrugated paper at the time of pressing hot deep drawing.

FIG. 4 is a plan view and a cross-sectional view of a CD storage case provided with a binding margin.

FIG. 5 is a plan view of a CD storage case having two storage recesses.

6A and 6B are a plan view and a sectional view of a CD storage case in which an inner wall of a storage recess is tapered.

7A and 7B are a plan view and a sectional view of a CD storage case in which an inner wall of a storage recess is tapered.

8 is a longitudinal sectional view showing a state where a CD is stored in the storage case shown in FIG.

9 is a perspective view showing a state where a CD is stored in the storage case shown in FIG. 6 and is bound in a magazine.

[Explanation of symbols]

1: CD storage case, 2: Storage part, 3: Lid part, 4: Bent part, 5: Recessed part, 6: Convex mounting part, 7: Convex fitting part, 8:
Collar portion, 9: binding margin portion, 10: bent portion, 11: double-sided cardboard paper, 12: liner, 13: core, 14: inner wall

Claims (3)

[Claims] 1. A CD storage part formed by pressing hot-deep drawing a square base paper made of double-sided cardboard having a thickness of 1.0 mm to 1.6 mm, and sandwiching a central bent part. And a lid portion, and the CD storage portion has a convex circular CD mounting portion that abuts a peripheral portion of the storage CD center hole, and a convex shape that concentrically projects from the upper surface of the CD mounting portion. An integrated CD storage case comprising a CD storage recess having a CD center hole fitting portion and a flange portion around the recess. 2. The CD accommodating portion has a binding margin portion formed integrally with the CD accommodating portion via a bent portion on any one of the three sides thereof. Integrated CD storage case described. 3. The integrated CD storage case according to claim 1, wherein the CD storage recess in the CD storage portion has a tapered inner wall that abuts an outer peripheral edge of the storage CD.