JP2013022439A - Method of manufacturing storage case having thin flat body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the selection of a gap formed between thin flat transparent synthetic resin sheets and to reduce the cost by eliminating a process of inserting and positioning a core material between the thin flat transparent synthetic resin sheets.SOLUTION: A layer coated with a hot-melt adhesive is formed to be located at a sealing and fixing part on a peripheral part of each thin flat transparent synthetic resin sheet. The core material is constituted of a molten resin layer formed by curing the resin of the layer coated with the hot-melt adhesive.

Description

The present invention consists of a plurality of thin flat hard synthetic transparent resin plates and soft synthetic resin transparent sheets, which are superposed on one another (upper edge) and bonded together to form a bag shape. The present invention relates to a method of manufacturing a thin flat body storage case that can freely store a thin flat body (such as a card).

In this type of thin flat body storage case, in order to form a thin flat body (card or the like) storage space, a plurality of laminated thin flat hard synthetic transparent resin plates, soft synthetic resin transparent sheets A gap is formed between them.

Japanese Patent Application Laid-Open No. 11-32823 “Card Case” Registered Utility Model Publication No. 3048645 “Holder for sheet-like material” Japanese Patent Application No. 2010-048511 "Multi-layer product such as solar cell panel / electronic panel and method for sealing peripheral portion of multi-layer product such as solar cell panel / electronic panel"

In the known storage case, as a technique for forming the above-mentioned gap, in Japanese Patent Laid-Open No. 11-32823, “Card Case” in Japanese Patent Application Laid-Open No. 11-32823, referring to FIG. By inserting an insertion spacer (core material) 3a between the transparent resin plates (transparent plate materials) 1a and 2a, the interval of the gap g for forming a storage space for a thin flat body (card or the like) is determined. ing. Therefore, although the gap g can be appropriately selected by selecting the thickness of the insertion spacer (core material) 3a, the insertion spacer (core material) 3a is made of hard synthetic transparent resin plates (transparent plate materials) 1a and 2a. There is a problem that requires a step of inserting and positioning between them.
Next, in the registered utility model publication No. 30486645 of “Patent Document 2”, referring to FIG. 12, the thin soft synthetic resin transparent sheets (short sheets) 1b and 2b are folded. The portion 3b is positioned between the soft synthetic resin transparent sheets (short sheets) 1b and 2b, and the peripheral soft synthetic resin transparent sheets (short sheets) 1b and 2b and the folded portion 3b are heated. A molten resin layer is formed, and a gap g for forming a storage space for a thin flat body (such as a card) is determined by the molten resin layer corresponding to the folded portion 3b. Therefore, the gap g is determined by the thickness of the folded portion 3b and is constant, and there is a problem that it cannot cope with the change in the thickness of the stored item.

Therefore, the present invention simplifies the means for forming the gap G (core material 13 and the folded portion 14) in the known technique, and the gap G (the thickness of the core material) to cope with the change in the thickness of the contents. ) Is easy to select.

The invention of claim 1 is a bag in which the peripheral portions of a plurality of laminated thin flat synthetic transparent resin sheets are closely fixed to each other via a core material, except for an opening serving as an outlet for stored items. In the production of a thin flat body storage case configured as a shape, a hot melt adhesive coating layer is formed on the peripheral edge of the thin flat synthetic transparent resin sheet at a sealing and fixing portion, and the hot melt adhesion The core material is constituted by a molten resin layer formed by resin curing of the agent coating layer.

The invention according to claim 2 is a bag in which the peripheral portions of a plurality of laminated, thin, synthetic transparent resin sheets are closely fixed to each other via a core material, except for an opening serving as an outlet for stored items. In the production of a thin flat storage case configured as a shape, by applying hot melt adhesive to the peripheral edge of the flat synthetic transparent resin sheet automatically and continuously in a single stroke, excluding the upper end that becomes the opening A molten resin formed by forming a hot-melt adhesive coating layer by providing a hot-melt adhesive coating layer coated in a partially cut ring (loop), and curing the hot-melt adhesive coating layer The core material is constituted by a layer.

According to a third aspect of the present invention, in the method for manufacturing a thin flat body storage case according to the first or second aspect, a rubber-based hot melt adhesive is used as the hot melt adhesive application layer as a hot melt adhesive. And changing the timing and / or pressing force of the peripheral edge of the thin flat synthetic transparent resin sheet laminated above the hot melt adhesive application layer to form the hot melt adhesive application layer. The thickness, width, cross-sectional shape, etc. of the molten resin layer formed by resin curing can be selected freely.

Since the invention of the present application is to form the molten resin layer (the core material) by curing the resin by applying a hot melt adhesive, it is compared with work processes of known techniques such as mounting of the core material and folding of the extension. As a result, the work process is greatly simplified and the product cost is reduced.
Furthermore, the invention of claim 3 comprises the timing of pressing the peripheral portion of the laminated thin transparent synthetic resin sheet which comprises the molten resin layer (the core material) by resin curing of the rubber-based hot melt adhesive layer. Since the thickness, width, cross-sectional shape, etc. of the molten resin layer can be selected by changing the pressing force, the molten resin layer as the core material is stored in the thin flat body storage case. There is an effect that it is possible to easily cope with changes in the thickness and the like.

The thin flat body storage case manufactured by the manufacturing method of a thin flat body storage case is shown, a figure is a perspective view of a front view, b figure is a cross-sectional view, and c figure is a longitudinal cross-sectional view. The 1st process of the manufacturing method of the thin flat body storage case of this invention is shown, a figure is a front view, b figure is a cross-sectional view, c figure is a partial expanded cross-sectional view. The 2nd process of the manufacturing method of the thin flat body storage case of this invention is shown, a figure is a front view, b figure is a cross-sectional view, c figure is a partial expanded cross-sectional view. The 3rd process of the manufacturing method of the thin flat body storage case of this invention is shown, a figure is a front view, b figure is a cross-sectional view, c figure is a partial expanded cross-sectional view. Explanatory drawing of the change of the cross-sectional shape of a hot-melt-adhesive agent layer. Explanatory drawing of selection, such as the thickness of a molten resin layer (core material), and cross-sectional shape. The longitudinal cross-sectional view of a coater coating device. It is explanatory drawing of the coating effect | action of a coater coating apparatus, (a) A figure is a longitudinal cross-sectional view of the coating head of a coater coating apparatus, (b) is a side view, (c) A figure is a bottom view, (d) A figure is a workpiece to be coated. The front view which shows the application | coating state to, (e) is a fragmentary perspective view. The formation process of the hot-melt-adhesive agent layer by a coater coating device is shown, a figure is a perspective view, b figure is explanatory drawing of a one-stroke book. The thin flat body storage case which is flexible (shape which can be deformed) is shown, (a) A figure is a perspective view, (b) is sectional drawing. The hard storage case of a well-known example is shown, (a) A figure is a perspective view, (b) is sectional drawing. The soft storage case of a well-known example is shown, (a) A figure is a perspective view, (b) is sectional drawing.

The present invention is implemented by the following steps.
First step:
A rubber-based hot melt adhesive (hot methyl) H is applied to the peripheral portion of the thin flat synthetic transparent resin sheet 1 to form a rubber-based hot melt adhesive coating layer.
Second step:
The molten resin layer M (core material 3) is formed by resin curing of the rubber-based hot melt adhesive coating layer H.
Third step:
The second thin synthetic transparent resin sheet 2 is superimposed on the thin flat synthetic transparent resin sheet 1 on which the molten resin layer M (core material 3) is formed. Lamination of the transparent resin sheets 1 and 2 is completed.
Fourth step:
The thickness, width, and shape of the molten resin layer M (core material 3) are set as set values by pressing the peripheral edge portions of the laminated thin flat synthetic transparent resin sheets 1 and 2.
5th step:
The core material is completed by complete curing of the molten resin layer, and a thin flat body storage case A is obtained.

FIG. 1 shows a thin flat body storage case A, two thin flat synthetic transparent resin sheets 1.2 are laminated, and the peripheral portion thereof is removed except for an opening R serving as a storage object outlet, A bag-like body is configured by being closely fixed to each other via the core material 3.
The core material 3 secures an internal space for storing the stored items.
In carrying out the present invention, the core material 3 is a molten resin layer M that is formed by heat curing of a hot melt adhesive coating layer.

With reference to FIG. 2 thru | or FIG. 4, the manufacturing process of a thin flat body storage case is demonstrated.
See FIG. 2:
A rubber-based hot-melt adhesive (hot methyl) is located at the periphery of the thin synthetic transparent resin sheet 1 at a hermetically sealed location (left end ----- lower end ---- right end in FIG. 2). Apply H. As a result, the rubber-based hot-melt adhesive coating layer H is formed at the hermetically sealed location (left end in FIG. 2 ---- lower end --- right end).
With reference to FIG.
By superposing a second thin synthetic transparent resin sheet 2 on top of the thin flat synthetic transparent resin sheet 1 on which the rubber-based hot melt adhesive coating layer H is formed, two thin flat synthetic sheets are combined. The transparent resin sheets 1 and 2 are in a laminated state.
With reference to FIG.
Thickness of the molten resin tree layer M (core material) 3 formed by curing the rubber-based hot melt adhesive coating layer H by pressing the peripheral edge of the laminated thin flat synthetic transparent resin sheets 1 and 2 , Width and cross-sectional shape are set values. The thin flat body storage case A is completed by complete curing of the molten resin layer.

FIG. 5 shows the change over time of the cross-sectional shape and the like of the rubber-based hot melt adhesive coating layer H in the above process. Figure a shows the change with time from the trapezoidal section, figure b shows the change with time from the circular section, and figure c shows the change with time from the square section.

Next, regarding the formation of the hot melt adhesive application layer by applying the hot melt adhesive in the first step of the present invention, [Patent Document 3] Japanese Patent Application No. 2010 relating to the application of the applicant of the present application which is a non-public technique. An embodiment automated by applying “-048511” will be described.

Referring to FIG. 6, the rubber-based hot-melt adhesive coating layer H having a quadrangular cross section in FIG. A changes to a cross sectional shape in FIG. B and further to a cross sectional shape in FIG.
By overlapping the synthetic transparent resin sheet 2 at the timing of FIG. b, the cross-sectional shape of FIG. d is obtained, and a gap g1 corresponding to the stored item B1 having a thickness of d1 is provided. Further, by pressing the peripheral portion, the cross-sectional shape of FIG. E is obtained, and a gap g2 corresponding to the stored item B2 having a thickness of d2 is provided.
By overlapping the synthetic transparent resin sheet 2 at the timing of FIG. c, the cross-sectional shape of FIG. f is obtained, and a gap g3 corresponding to the stored item B3 having a thickness of d3 is provided. Further, by pressing the peripheral portion, the cross-sectional shape of FIG. G is obtained, and a gap g4 corresponding to the stored item B4 having a thickness of d4 is provided.

With reference to FIG. 7, the coater type coating mechanism P will be described.

The coating unit is equipped with a gun unit 10 on one side of the main body block 5 and a gear pump and a servo motor on the other side. A melt tank is formed on the upper side of the main body block 5 and connected between the gun unit 10 and the main body block 5. Insert a block.

A supply circuit 7 and a return circuit 8 are formed in the main body block 5, and a heating member 9 is provided to maintain the main body block 5 at a predetermined temperature.

The gun unit 10 includes a valve mechanism 11, and a rubber-based hot melt adhesive (hot butyl) is applied to the application groove 14 exposed on the bottom surface of the lower end of the application head 13 via the supply path 12 of the lower application head 13. It is configured to control the supply of H.

With reference to FIG. 8, the application | coating form of the hot butyl) H with respect to the synthetic | combination transparent resin sheet 1 (to-be-applied workpiece W) mounted in the support stand 30 is shown.
By moving the coating nozzle relative to the workpiece to be coated while pressing the coating agent against the peripheral surface of the workpiece to be coated, the coating agent applied to the workpiece to be coated has a predetermined shape (thickness, coating range, cross-sectional shape, etc.) ).

In this embodiment, the support 31 of the coater type coating mechanism P is moved by a computer-controlled robot drive mechanism (not shown) in a straight line, 45 degrees rotation, straight movement C, 45 degrees rotation shown in FIG. A straight loop, a 45 degree rotation, a straight stroke, that is, a one-stroke movement, completes a partially cut-out annular loop of hot butyl) M.

In addition, you may apply | coat the front-back direction and the left-right direction discontinuously, ie, independently.

In carrying out the present invention, a rubber-based hot melt (hot butyl) is applied as a hot-melt coating agent, and the gun unit is equipped with a heating means, so that a rubber-based hot melt ( Hot butyl) is discharged in a liquid state from the tip of the coating agent discharge port.

In a state where it is applied to the application surface of the work to be applied, the rubber-based hot melt (hot butyl) is cooled and changes to a solid state.
Accordingly, the rubber-based hot melt (hot butyl) applied to the work to be applied has changed from a liquid state to a solid state.

For the product A ′ to which the present invention is applied, FIG. 10 shows a curved plate shape (circular cross section).
The stored item has a curved plate shape. Further, the upper plate 1 ′ and the lower plate 2 ′ are also curved plate shapes. The upper plate 1 ′ and the lower B ′ are made of a flexible material such as a soft plastic sheet. In this case, by using a rubber-based hot melt (hot butyl) M as the seal coating agent, the curved plate shape is obtained, and therefore the upper plate 1 'and the lower plate 2' have different bending radii. The fixing position of the upper plate 1 ′ and the lower plate 2 ′ of the system hot melt me (hot butyl) M is shifted as compared with the flat plate state, but it can be absorbed by the deformation of the rubber system hot melt me (hot butyl) M. [Rubber hot melt (hot butyl) M is perpendicular to the upper plate 1 ′ and the lower plate 2 ′ in the flat state, but is inclined and fixed to the upper plate 1 ′ and the lower plate 2 ｀ in the curved state. It can cope with the curvature of the upper plate 1 ｀ and the lower plate 2 ′ without changing the position].

The present invention promotes the manufacture and use of storage cases and contributes to the development of this type of industry.

DESCRIPTION OF SYMBOLS 1 ... Synthetic transparent resin sheet 2 ... Synthetic transparent resin sheet 3 ... Core material A ... Thin flat body storage case B ... Storage thing H ... Rubber-type hot-melt-adhesive (hot methyl)
M ... Molten resin layer

Claims (3)

A thin flat structure formed by laminating a plurality of laminated thin flat synthetic transparent resin sheets together with a core member, except for an opening serving as a take-out port for stored items. In manufacturing the storage case,
Form a hot melt adhesive coating layer on the peripheral edge of the thin synthetic transparent resin sheet,
A method for producing a thin flat container case, wherein the core material is constituted by a molten resin layer formed by resin curing of the hot melt adhesive application layer. A thin flat structure formed by laminating a plurality of laminated thin flat synthetic transparent resin sheets together with a core member, except for an opening serving as a take-out port for stored items. In manufacturing the storage case,
A hot melt adhesive is applied to the peripheral part of a thin synthetic transparent resin sheet in a circular pattern with a part cut away by automatically applying the hot melt adhesive in a single stroke shape except for the upper end that becomes an opening. A hot melt adhesive layer is provided to form a hot melt adhesive coating layer,
A method for producing a thin flat container case, wherein the core material is constituted by a molten resin layer formed by resin curing of the hot melt adhesive application layer. While forming the hot melt adhesive application layer as a hot melt adhesive, using a rubber-based hot melt adhesive,
Formed by resin curing of the hot melt adhesive coating layer by changing the timing and / or pressing force of the peripheral edge of the thin flat synthetic transparent resin sheet laminated above the hot melt adhesive coating layer The method for manufacturing a thin flat container case according to claim 1 or 2, wherein the thickness, width, cross-sectional shape and the like of the molten resin layer to be selected are selectable.

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