JPH05177970A - File and tool horn for making file - Google Patents

Abstract

PURPOSE:To provide a file using leaves made of polypropylene equipped with a covering paper having excellent quality sense and texture, and deep and high-grade sense, and a tool horn for making the file. CONSTITUTION:A file 1 is constituted of a covering member 2 to be folded in two and transparent pocket-shaped leaves 3 made of polypropylene interposed between the covering members and fixed. The covering member 2 is constituted of a core material having an embedded piece consisting of polypropylene embedded and fixed at the central vertical part which is to be a spine, a surface sheet material 5 having excellent quality sense and texture stuck to a face which is to be the surface side of the core material, and a back sheet material 6 stuck to the back side of the core material. At the central vertical part of the back side of the part which is to be the spine of the covering member 2, the central vertical part of the leaf is directly welded by ultrasonic welding to the embedded piece at intervals skippingly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file for storing documents, and more particularly to a file using a transparent bag-shaped leaf and a tool horn for manufacturing the file.

[0002]

2. Description of the Related Art There are various types of files using transparent bag-shaped leaves. For example, the file 20 shown in FIG. 11 has a bag-like shape in which a transparent left, right and bottom sides are closed inside a cover 21. A plurality of leafs 22 are stacked and fixed to the cover 21 in a shape in which, for example, triangles are staggered in the vertical direction at a central portion 23 of the leaf 22 by high frequency or ultrasonic waves, and the cover 21 is folded at the center and filed. I am trying. The documents 24 and the like are inserted into each transparent bag-shaped leaf 22.

Polyvinyl chloride is also used for the leaf 22, but polypropylene (PP), which is light and excellent in transparency, is widely used because it has poor transparency and is heavy, and it is also used for fixing the leaf to the cover. Is superior in ultrasonic welding because it is easy to work and does not easily peel off after fixing.

[0004]

In the case of ultrasonic welding, the leaf and the cover must be made of the same material. With a file in which the cover is made of the same polypropylene as the leaf, the cover does not have a high-class feel in terms of texture and touch. Good for office,
For example, it has a drawback that it is not suitable for use as a gift or a gift. Further, for example, vinyl chloride is superior in terms of texture and feel, but it cannot be ultrasonically welded to vinyl chloride and polypropylene.

Further, when a transparent synthetic resin leaf is ultrasonically welded to the cover member using a tool horn, burrs are formed around the tool horn and the appearance is not good.

The present invention provides a file using a leaf made of polypropylene, which has a heavy and high-quality cover with a good texture and touch, and a tool horn for ultrasonic welding in which burr does not occur during the production thereof. It is an object.

[0007]

In order to achieve this object, the present invention is configured as follows. That is, in the invention of claim 1, in the file 1 including the cover member 2 that is folded in two and the transparent bag-shaped polypropylene leaf 3 that is sandwiched and fixed between the cover members, the cover member 2 is , A core material 4 in which an embedding piece 8 made of polypropylene is embedded and fixed in a central vertical portion that serves as a spine cover, and a front sheet material 5 that is attached to the front surface of the core material and has a good texture and feel, The back sheet material 6 adhered to the back side of the core material, and the central vertical portion of the leaf on the back side of the back cover portion of the cover member 2, and the central vertical portion of the leaf are embedded by ultrasonic welding. It was configured to be directly welded to each other at intervals.

According to the second aspect of the present invention, the file 1 is composed of a cover member 2 which is folded in two and a transparent bag-shaped polypropylene leaf 3 which is sandwiched and fixed between the cover members.
In the above, the cover member 2 is attached to the core material 15 and the surface of the core material on the front side, and the cover sheet material 1 having a good texture and feel
6 and the back sheet material 17 attached to the back surface of the core material
In addition, a welding portion 18 made of polypropylene is formed on the back side of at least the spine of the cover member 2, and the central vertical portion of the leaf is welded by ultrasonic welding here.

In a third aspect of the present invention, a tool horn used for ultrasonically welding a transparent synthetic resin leaf to a synthetic resin portion of a cover member is melted when the tip ends of the tool horns 10 and 19 are welded. Recesses 11 and 19 containing synthetic resin
a is provided.

As the core materials 4 and 15, for example, a chip board plate can be used, and as the surface sheet materials 5 and 16 having a good texture and feel, for example, a synthetic resin such as vinyl chloride,
Natural or synthetic leather, cloth, paper, etc. can be used. Further, as the back sheet materials 6 and 17, in addition to synthetic resins such as polypropylene and vinyl chloride, the same natural or synthetic leather, cloth, paper or the like as the front sheet material may be used. In claim 2,
The welded portion 18 is formed by attaching a polypropylene sheet or the like to the back sheet material 17 entirely or only in the central vertical portion.

[0011]

According to the invention of claim 1, a front sheet material having a good texture and feel is attached to the surface of the front side of the cover of the core material of the cover member, and a back sheet material is attached to the side of the back side. The leaves are directly welded to the embedding pieces embedded in the portion corresponding to the spine of the cover member at intervals with ultrasonic welding.

According to the second aspect of the invention, the core material of the cover member is
A front sheet material with a good texture and feel is pasted on the front side of the cover sheet, a back sheet material is pasted on the back side, and the leaf is a welded portion of the back sheet of the cover member.
It is welded by ultrasonic welding.

According to the third aspect of the invention, during ultrasonic welding, the melted synthetic resin enters into the concave portion of the tip portion and burrs cannot be formed around the tool horn.

[0014]

[Embodiment 1] In FIG. 1, a file 1 is composed of a cover member 2 and a plurality of (1 to 10, here seven) transparent bag-shaped leaves 3. The cover member 2 is shown in FIGS. As described above, the front sheet material 5 and the back sheet material 6 made of vinyl chloride are attached to both sides of the core material 4 made of a chipboard plate, both of which are comfortable to touch. The core material 4 is a core material sheet 4 attached to each other.
a and a core sheet 4b, and a hole 7 formed by punching in a vertically long shape in a central vertical portion which is a spine cover of the core sheet 4a.
Is provided, and an embedding piece 8 made of polypropylene and having the same thickness as that of the core sheet 4a is fitted and adhered thereto.

The thickness of the core material 4 is, for example, 0.6 mm to 3 m.
The thickness of the core material sheet 4a and the core material sheet 4b is, for example, each half of the core material 4, and the thickness of the embedding piece 8 is the same as that of the core material sheet 4a. The thickness of the front sheet material 5 and the back sheet material 6 made of vinyl chloride is, for example, 0.25 m.
It is about m and may be colored or squeezed.

Each leaf 3 is formed into a bag shape by closing two transparent polypropylene sheets on the left and right sides and the bottom side, and the document 9 is inserted between them. Leaf 3
Is placed on the back side of the cover member 2, and as shown in FIG. 5, a tool horn 10 (a plurality of which are arranged in a row) having a quadrangular cross section at the tip of the ultrasonic velder descends. The leaf 3 made of polypropylene and the back sheet material 6
When it is pressed against and is subjected to ultrasonic vibration, the back sheet material 6 portion made of a vinyl chloride sheet is melted and removed, and the leaf 3 is directly welded to the embedding piece 8 made of polypropylene (FIG. 6).

As shown in FIG. 5, a concave portion 11 having a circular horizontal cross section and a curved vertical cross section is provided at the center of the tip of a rectangular tool horn 10 having a flat tip, and a burr is formed on the peripheral edge of the tip of the tool horn 10. Polypropylene that has melted so that it cannot be inserted into the recess 11. Therefore, after welding, a circular convex portion 13 is formed at the welded portion 12 as shown in FIGS. The size and depth of the recess 11 are set so as to accommodate the melted polypropylene. Note that some of the plurality of leaves are omitted in FIGS. 5 and 6.

Welding by the tool horn 10 is continuously and step by step performed as shown in FIG. By being welded to each other, the back sheet material 6 between the welding points 12 and 12 remains like 6a as shown in FIG. 7, and the leaf 3 is peeled from the cover member 2 together with the embedding piece 8. Is being prevented.

If the size of the file is A4, the welding is carried out, for example, at 16 to 30 places.
The distance D between 2 and 3 is preferably 3 mm or more. If it is 3 mm or less, when many documents are put in the leaf 3, the leaf 3 and the embedding piece 8 may be peeled off from the cover member 2 due to its weight.

As the front sheet material 5 and the back sheet material 6, in addition to vinyl chloride, other synthetic resin sheets, natural or synthetic leather, cloth, paper and the like can be used. The cross section of the tip of the tool horn 10 may have a circular shape or another shape, and the vertical section of the recess 11 may have a semicircular shape, a quadrangular shape, or another shape.

[0021]

[Embodiment 2] FIGS. 8 to 10 show a second embodiment of the present invention. A front sheet material 16 and a back sheet made of vinyl chloride are provided on both surfaces of a single core material 15 made of a chip board plate. The material 17 is adhered, and the polypropylene sheet 18 is adhered to the back sheet material 17 as a welding portion. Core material 15, front sheet material 16 and back sheet material 1
The thickness of 7 is the same as that of the first embodiment. The sheet 18 may be transparent or colored, and the thickness thereof is, for example, 15 μm to
About 100 μm is preferable. In addition, the sheet 1 should be formed so that the welded portion is formed only on the back side of the cover sheet.
8 may be attached only to the central vertical portion on the back surface side of the core material 15.

As shown in FIG. 9, the leaf 3 is arranged on a sheet 18 which is a welding portion provided on the back side of the cover member 2, and has a circular cross section at its tip portion and a circular cross section at its longitudinal section. A tool horn 19 of an ultrasonic velder, which is provided with a concave portion 19a having a quadrangular surface, descends to seat the leaf 3 on the sheet 18.
And then apply ultrasonic vibration to the leaf 3 as shown in Fig. 10.
Are welded to the sheet 18. 9 and 10, some of the plurality of leaves are omitted.

In the case of the second embodiment, as in the first embodiment, the welding may be carried out step by step, or the tool horns in which the triangles are alternately arranged are used to form a triangle as in the conventional example. May be welded as if they were staggered. Other than vinyl chloride, other synthetic resin sheets, natural or synthetic leather, cloth, paper and the like can be used for the front sheet material 16. Further, as the back sheet material 17, besides vinyl chloride, polypropylene or other synthetic resin sheet, natural or synthetic leather, cloth, paper or the like can be used. When polypropylene is used for the back sheet material 17, it is not necessary to newly provide the sheet 18 made of polypropylene as the welded portion.

The tool horn having the concave portion at the tip is not limited to the case where the polypropylenes are ultrasonically welded, but can also be used for welding the other ultrasonically weldable synthetic resins.

[0025]

According to the first aspect of the present invention, even though the polypropylene leaf having excellent transparency is welded and fixed to the cover member by ultrasonic welding, it has a heavy weight with a cover having a good texture and feel. It is possible to provide a high-quality file. Moreover, the embedding piece to which the leaf is welded is hidden under the back sheet material and cannot be seen, and since it does not rise so much and is flush with the back surface, the appearance is good. In addition, the leaf is directly welded to the embedded embedding piece, and is also welded to each other, leaving behind the back sheet material between the welding points, so the embedding piece is hard to peel off and the leaf is firmly fixed. Become.

According to the second aspect of the present invention, even though the file is made by fixing the leaf having excellent transparency to the cover member by ultrasonic welding, it has a heavy and high-class feeling with a cover having a good texture and touch. Files are relatively easy to get.

According to the third aspect of the present invention, since the concave portion is provided at the tip portion, the molten synthetic resin cannot enter the concave portion and burrs cannot be formed on the peripheral edge of the tip portion of the tool horn.

[Brief description of drawings]

FIG. 1 is an overall view showing a file according to a first embodiment of the present invention.

FIG. 2 is a view showing a core material.

FIG. 3 is a diagram showing a state in which a front sheet material and a back sheet material are attached to a core material to which an embedding piece is fitted and attached.

FIG. 4 is an end view taken along the line CC of FIG.

FIG. 5 is a view showing a state before a leaf is welded to a cover member with a tool horn.

FIG. 6 is a view showing a state in which the leaf is completely welded to the cover member.
The end view by the AA line of FIG.

FIG. 7 is a view showing a state in which a leaf has been welded to a cover member.
The end view by the BB line of FIG.

FIG. 8 is a sectional view of a cover member according to a second embodiment of the present invention.

FIG. 9 is a diagram showing a state before a leaf is welded to a cover member by a tool horn in Example 2.

FIG. 10 is a diagram showing a state in which the leaf has been welded to the cover member in Example 2.

FIG. 11 is a diagram showing a conventional file.

[Explanation of symbols]

 1 file 2 cover member 3 leaf 4 core material 5 front sheet material 6 back sheet material 7 hole 8 embedding piece 10 tool horn 11 recessed portion 12 welded portion 13 raised portion 15 core material 16 front sheet material 17 back sheet material 18 welded portion and Sheet 19 Tool horn 19a Recess

Claims (3)

[Claims] 1. A cover member 2 in a file 1 comprising a cover member 2 folded in half and a transparent bag-shaped polypropylene leaf 3 sandwiched and fixed between the cover members.
However, a core material 4 in which an embedding piece 8 made of polypropylene is embedded and fixed in a central vertical portion that serves as a spine cover, and a surface sheet material 5 that is attached to the surface on the front side of the core material and has a good texture and feel.
And a back sheet material 6 attached to the back side of the core material,
In the central vertical portion on the back side of the spine of the cover member 2,
The file is characterized in that the central vertical portion of the leaf is directly welded to each other by ultrasonic welding at intervals on the embedding pieces. 2. A cover member 2 comprising a cover member 2 which is folded in two and a transparent bag-shaped polypropylene leaf 3 which is sandwiched and fixed between the cover members.
Is composed of a core material 15, a front sheet material 16 which is attached to the front surface of the core material and has a good texture and feel, and a back sheet material 17 which is attached to the back surface of the core material. A file is characterized in that a welded portion 18 made of polypropylene is formed on at least the back side of the cover member 2 at the back cover portion, and the central vertical portion of the leaf is welded here by ultrasonic welding. 3. A tool horn used for ultrasonically welding a transparent synthetic resin leaf to a synthetic resin portion of a cover member in a concave portion into which the molten synthetic resin enters at the tip of the tool horns 10, 19 during welding. 11. A tool horn for manufacturing a file, characterized in that 11, 19a are provided.