JP3043046U - CD storage case - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a CD storage case that can directly store a CD (compact disc) without putting it in a small bag made of paper or non-woven fabric. [Structure] A CD storage case obtained by stacking a soft polyvinyl chloride sheet using a trimellitic acid ester as a plasticizer and a non-woven fabric, and welding the periphery thereof. A pressure-sensitive adhesive layer and a release paper layer may be sequentially provided on the non-woven fabric surface so that they can be attached to the back cover of a book or the like. The nonwoven fabric, the pressure-sensitive adhesive layer, and the release paper layer may be provided with a cutting line serving as a CD storage port. Further, the soft polyvinyl chloride sheet may be provided with an embossing wire for cutting when the CD is taken out. Further, an arc-shaped welded portion matching the outer shape of the CD may be provided so that the stored CD is fixed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a storage case for storing a CD (compact disc), particularly a polycarbonate CD. Furthermore, it is a CD storage case suitable for sticking to books such as magazines for use.

[0002]

[Problems to be solved by the prior art and the invention]

 In recent years, CDs (Compact Discs) have been commercially available as recording media for audio or computers. The CD is a disc made of synthetic resin having a diameter of, for example, 12 cm, and is usually put on the market in a container made of a hard synthetic resin. CDs are also sold in a bag-shaped case that is attached to the spine of books such as magazines and sold with books such as magazines. When the CD is stored in a case attached to the spine of a book such as a magazine for sale, soft polyvinyl chloride is used as the material for this case because it is soft and comfortable to the touch. That is, a bag made by stacking two soft polyvinyl chloride sheets on top of each other and fusing them together is used. In some cases, a pressure-sensitive adhesive layer and a release paper layer are provided on the back surface of the bag for easy attachment to magazines, spine covers, etc.

However, when the CD is stored directly in this conventional storage case made of soft polyvinyl chloride, the plasticizer in the soft polyvinyl chloride shifts to CD, and the CD is stored. Swells the CD and adversely affects the CD. This tendency is remarkable in the CD made of polycarbonate. Therefore, the CD is once put in a small bag made of paper or non-woven fabric, and then put in the storage case made of soft polyvinyl chloride in the small bag so that the CD does not come into direct contact with the soft polyvinyl chloride. The use of sachets in this way is costly and requires extra effort. Further, the purchaser may inadvertently store the CD in a soft polyvinyl chloride storage case without using the paper or non-woven cloth pouch after using the CD. Will occur. The present invention has been made in view of the above circumstances, and an object thereof is to provide a soft polyvinyl chloride CD storage case that can directly store a CD without storing it in a small bag made of non-woven fabric or paper. .

[0004]

[Means for Solving the Problems]

 The present inventor has found that the plasticizer contained in the soft polyvinyl chloride sheet causes the CD to swell with time when the CD is stored in a storage case made of a soft polyvinyl chloride sheet. However, it was found that the soft polyvinyl chloride sheet using trimellitic acid ester as a plasticizer does not have such a phenomenon. The present invention was made based on this finding.

That is, the present invention is a CD storage case in which a soft polyvinyl chloride sheet using a trimellitic acid ester as a plasticizer and a non-woven fabric are overlapped and the periphery thereof is welded. A pressure sensitive adhesive layer and a release paper layer may be sequentially provided on the non-woven fabric surface of the CD storage case to facilitate attachment to a mount or the like. Further, the nonwoven fabric, the pressure-sensitive adhesive layer and the release paper layer may be cut to provide a storage port for storing a CD. In addition, an embossed wire may be provided on the soft polyvinyl chloride sheet of this storage case to make it easier to make a take-out port when taking out a CD. Further, an arc-shaped welded portion matching the outer shape of the CD may be provided so that the stored CD is fixed.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

 The present invention will be described with reference to the drawings. 1 to 4 show an example of a CD storage case of the present invention. 1 is a plan view and FIG. 2 is a bottom view. 3 is a sectional view taken along the line AA of FIG. 1, and FIG. 4 is a sectional view taken along the line BB. 1 is a soft polyvinyl chloride sheet, and 2 is a non-woven fabric. Reference numeral 3 is an adhesive portion between the soft polyvinyl chloride and the non-woven fabric, which is generally welded. In this example, the peripheral edges of all four sides are welded, but it is also possible to weld only the three sides and use the unwelded portion as a storage port. Further, in this example, a square having one side of 14 to 15 cm is used, but it may be rectangular, and the lower side may have an arc shape.

The soft polyvinyl chloride sheet used in the present invention can be manufactured by a usual molding method. That is, a plasticizer, stabilizer, lubricant, etc. are added to polyvinyl chloride, mixed in a blender, kneaded with a Banbury mixer or a mixing roll, and then rolled with a calender roll to form a sheet. It can also be manufactured by a method using a T-die or an inflation method. Uses trimellitic acid ester as a plasticizer. Examples of the trimellitic acid ester include tri-2-ethylhexyl trimellitate, triisodecyl trimellitate, tributyl trimellitate, trihexyl trimellitate, and tri-n-octyl trimellitate. You may use these in mixture of 2 or more types. The plasticizer is blended in an amount of 20 to 60 parts by weight with respect to 100 parts by weight of polyvinyl chloride. If it is less than 20 parts by weight, the texture is too hard, and if it exceeds 60 parts by weight, the texture is too soft. The thickness of the soft polyvinyl chloride sheet is 0.05 to 0.7 mm, preferably 0.1 to 0.5 mm.

The non-woven fabric is not particularly limited, but is preferably one that can be welded to a soft polyvinyl chloride sheet by a welding process, such as a synthetic fiber such as polyamide fiber, polyester fiber, polyethylene fiber or polypropylene fiber, or other A non-woven fabric produced by mixing with the above fibers is preferred. In the present invention, the back side of the CD storage case is made of a non-woven fabric, but by using the non-woven fabric, the CD can be stored and taken out smoothly. The soft polyvinyl chloride sheet and the non-woven fabric are overlapped and the periphery thereof is adhered, and this adhesion is preferably welding.

Although the CD storage case of the present invention can be used as it is, when it is used as a storage case to be attached to the back cover of a book such as a magazine, the area around the soft polyvinyl chloride sheet and the non-woven fabric is used. After adhering, the pressure sensitive adhesive layer and the release paper layer are provided on the back surface of the nonwoven fabric. 1 to 4, 4 is a pressure-sensitive adhesive layer, and 5 is a release paper layer. Rubber-based adhesives, acrylic-based adhesives, polyurethane-based adhesives, etc. are used as pressure-sensitive adhesives. For the release paper layer, paper coated with a release material such as paraffin or silicone, a synthetic resin film, or the like is used.

When the soft polyvinyl chloride sheet and the non-woven fabric are superposed and the four sides thereof are adhered, a storage opening for storing the CD is provided. Reference numeral 6 in FIGS. 1, 2, and 4 is the receipt. The storage port 6 is provided on the back surface of the storage case and 0.5 to 2.0 cm below the upper side of the storage case as shown in FIG. As shown in FIG. 4, the storage port 6 is provided by cutting the nonwoven fabric, the pressure-sensitive adhesive layer and the release paper layer with a cutter. Further, in order to make it easier for the purchaser to take out the CD from the storage case, an embossed wire may be provided on the front side soft polyvinyl chloride sheet. The purchaser can easily remove the CD by cutting along the embossed wire with a cutter or the like. Reference numeral 7 in FIGS. 1 and 4 indicates this embossing wire.

Further, when the CD storage case has a quadrangular shape, an arc-shaped adhesive portion conforming to the outer shape of the CD may be provided so that the CD will be fixed and stored well when the CD is stored. This adhesive portion is formed by adhering the soft polyvinyl chloride sheet and the non-woven fabric. It is advisable to perform this bonding at the same time when the soft polyvinyl chloride sheet and the non-woven fabric are overlaid and the periphery thereof is bonded by welding or the like. Reference numeral 8 shown in FIG. 1 is the arc-shaped adhesive portion.

The CD storage case of the present invention can be used as it is, or can be used by sticking it on a mount like an album, but especially when sticking it on the back cover of a book such as a magazine. It is convenient. That is, after storing the CD from the storage opening 6 on the back side of the CD storage case, the release paper 5 on the back side is peeled off to expose the pressure-sensitive adhesive layer 4, and the storage case storing the CD is used as a desired book. Attach it to the position and supply it to the market. In this state, the CD is in a sealed state. A purchaser who purchases this can easily take out the CD by cutting the sheet with a cutter along the embossed line 7 of the soft polyvinyl chloride sheet on the front side of the CD storage case.

[0013]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. Example 1 100 g of polyvinyl chloride having a degree of polymerization of 1100 was mixed with 35 g of tri-2-ethylhexyl trimellitate and 2 g of stabilizers (barium stearate, zinc stearate) and blended with a blender, and then mixed with a Banbury mixer or a mixing roll. Was kneaded and rolled with a calendar roll to give a soft polyvinyl chloride sheet having a thickness of 0.1 mm. This sheet was cut into a square having a side of 14.5 cm. An embossing wire 7 as shown in FIG. 1 was provided by an embossing machine along one side of this cut sheet. Further, the nonwoven fabric made of nylon fiber was cut into a square having a side of 14.5 cm. The soft polyvinyl chloride sheet 1 and the non-woven fabric 2 were superposed and the four sides thereof were welded and welded. At this time, at the same time, an arc-shaped welded portion 8 was formed on the side opposite to the embossed wire 7 by welding to improve the fixation of the stored CD. Next, an acrylic pressure-sensitive adhesive was applied to the surface of the non-woven fabric 2 to form a pressure-sensitive adhesive layer 4, on which a conventional release paper 5 was attached. Then, the non-woven fabric 2, the pressure-sensitive adhesive layer 4, and the release paper 5 were cut to form the storage port 6.

[0014]

[Effect of the invention]

 The CD storage case of the present invention does not adversely affect the CD because the plasticizer in the soft polyvinyl chloride sheet does not transfer to the CD even if it is left in an indirect state with the CD for a long time. It is preferably used for CD. Therefore, the supplier does not need to put the CD in a small bag made of paper or non-woven fabric and then put it in the storage case as in the conventional case, and can directly put it in the storage case, which is advantageous in terms of cost and labor. . . It is also convenient because the purchaser does not need to put it in a small bag made of paper or non-woven fabric and then put it in the storage case after use, and there is no risk of accidentally forgetting to put it in the small bag and storing it and adversely affecting the CD . In addition, the soft polyvinyl chloride sheet has good transparency, so that the buyer can see the CD body and its label well. In addition, since the back side is made of non-woven fabric, CDs can be stored and taken out smoothly. Furthermore, since a storage port is provided on the back side and a soft polyvinyl chloride sheet on the front side is provided with an embossed wire, it is easy to store and take out the CD.

[Brief description of the drawings]

FIG. 1 is a plan view of a CD storage case of the present invention.

FIG. 2 is a bottom view of the CD storage case of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a sectional view taken along line BB of FIG. 1;

[Explanation of symbols]

1 Soft polyvinyl chloride, 2 Nonwoven fabric, 3 Welded part, 4
Pressure-sensitive adhesive layer, 5 release paper layer, 6 cutting line, 7 embossing line, 8 welded part

Claims (5)

[Utility model registration claims] 1. A soft polyvinyl chloride sheet using a trimellitic acid ester as a plasticizer and a non-woven fabric are overlapped with each other,
A CD storage case made by welding the surrounding area. 2. The CD storage case according to claim 1, wherein a pressure-sensitive adhesive layer and a release paper layer are sequentially provided on the non-woven fabric surface. 3. A non-woven fabric, a pressure-sensitive adhesive layer and a release paper layer are coated with C
The CD storage case according to claim 2, wherein a cutting line is provided to serve as a storage opening when the D is stored. 4. A soft polyvinyl chloride sheet provided with an embossing wire serving as a take-out port when taking out a CD.
Or the CD storage case described in 3. 5. The CD storage case according to any one of claims 1 to 4, wherein an arc-shaped welded portion matching the outer shape of the CD is provided so that the stored CD is fixed.