JPH0443343Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Field of industrial application] This invention relates to a file in which a bag body made of a synthetic resin sheet is attached to a cover formed by covering a core such as cardboard with a cover sheet of synthetic resin. be.

[Conventional technology]

Conventionally, this type of file was
As shown in the above publication and shown in FIGS. 5 and 6, a core 11 made of cardboard, etc.
A synthetic resin auxiliary sheet 14 is heat-bonded to the edge of the cover sheet 12 other than the upper edge to form a pocket P' on the back side of the two covers 13 formed by covering the cover sheets 13 and 2. A synthetic resin bag 15 having an opening at the upper edge is interposed between the auxiliary sheets 14, and
Both side edges of the sheet forming the bag 15 are thermally bonded to both side edges of the auxiliary sheet 14 so that gore portions 16 are formed on both sides of the bag 15.

[The problem that the idea attempts to solve]

In the file described above, the cover sheet 12 and the core 11 are approximately the same in size, so the peripheral fixed portion of the cover sheet 12 is located at the edge of the core 11.

Therefore, the pocket P' does not open even with the extension of the auxiliary sheet 14, as shown in FIG.
It can only store thin items such as pieces of paper,
In particular, when taking out a piece of paper stored in pocket P', the fingertip was inserted into a narrow gap, so there was a gap in which the piece of paper could not be grasped smoothly.

Furthermore, as the fingertip is inserted, both ends of the opening edge of the auxiliary sheet are pulled strongly, which causes the problem of tearing the thermally bonded portion.

Therefore, this idea is to provide a file whose pocket can be opened wide.

[Means for solving problems]

In order to solve the above problem, this invention consists of two covers formed by covering a core such as cardboard with a synthetic resin cover sheet, and an auxiliary synthetic resin sheet covering the edges other than the upper edge on the back side of the two covers. A pocket is formed by thermally adhering the edge of the cover sheet, and a synthetic resin bag with an opening at the upper edge is interposed between both auxiliary sheets, and gores are formed on both sides of the bag. In a file formed by thermally adhering both side edges of the sheet forming the bag to both side edges of the auxiliary sheet, both sides of the core are The size between the edges is reduced, and a structure is adopted in which a gore portion is formed between the side edge of the cover sheet and the side edge of the core.

[Effect]

The file according to this invention configured in this way is such that when the cover on the side where the gusset is made is grabbed and pulled in opposite directions, both sides of the cover are bonded by heat bonding between the side edges of the auxiliary sheet and the cover sheet. The gore part is stretched and bent in the direction opposite to the direction in which the cover is pulled through the bag body and the auxiliary sheet.

Therefore, the opening of the pocket formed by the cover sheet and the auxiliary sheet opens wide.

〔Example〕

Embodiments of this invention will be described below with reference to the accompanying drawings.

In the figure, A is a file.

This file A consists of two covers 3 formed by covering a core 1 made of cardboard or the like with a cover sheet 2 made of synthetic resin.
A synthetic resin auxiliary sheet 4 is thermally bonded to the edge of the cover sheet 2 at its edges other than the upper edge to form a pocket P on the back side of the synthetic resin auxiliary sheet 4, and an opening is formed at the upper edge between both auxiliary sheets 4. An auxiliary sheet 4 is attached to both side edges of the sheet forming the bag 5 so as to form a gore part 6 on both sides of the bag 5.
It is formed by thermally adhering it to both side edges.

The above-mentioned cover 3 wraps the core 1 with two cover sheets 2, and makes the dimension between both side edges of the core 1 smaller than the dimension between the both side edges of the cover sheet 2, and the side edges of the cover sheet 2 and the core A gore part 7 is formed between the side edge of the part 1 and the side edge of the part 1.

In the illustrated case, the bag 5 includes two sheets 5',
Heat glue the edges other than the upper edge of 5' to form a single bag,
A plurality of individual bags are thermally bonded and connected in a bellows-like manner so as to form gore portions 6 on the edges other than the opening on the facing surface of the sheet 5' (on both sides and the lower edge).

The above-mentioned respective thermal bonding is performed by applying a high frequency voltage.

Note that a gore portion may be formed between the lower edge of the core 1 and the lower edge of the cover sheet 2.

In the figure, reference numeral 8 denotes a belt-shaped core that is inserted into a cylindrical portion 9 with one end open provided on the overlapping surface of the sheets 5' of adjacent bag bodies 5 to prevent deformation of the opening of the bag body 5, and 10 is on one cover 3. It is a lid attached to the edge.

With the above configuration, when the opening of the bag body 5 is opened by grasping the cover 1 on the side where the gusset part 7 is made and pulling it in opposite directions, the side edge of the auxiliary sheet 4 and the cover sheet 2 will be separated. Due to the thermal adhesion, both sides of the cover 3 are stretched and bent through the bag 5 and the auxiliary sheet 4 in the direction opposite to the direction in which the cover 3 is pulled.

Therefore, the opening of the pocket P formed by the cover 3 and the auxiliary sheet 4 opens wide as shown in FIG.

〔effect〕

Since this invention is constructed as described above, the opening of the pocket can be widened.

Therefore, thick objects can be smoothly stored in the pocket, and since it is easy to insert a fingertip into the pocket, it is also easy to take out the stored items.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the file according to this invention, Fig. 2 is a vertical side view showing the pocket in an open state,
FIG. 3 is a longitudinal sectional front view between the bags, FIG. 4 is a cross-sectional plan view showing the pocket portion, FIG. 5 is a perspective view of a conventional product, and FIG. 6 is a cross-sectional plan view showing the pocket portion. A... File, 1... Core, 2... Cover sheet, 3... Cover, 4... Auxiliary sheet, 5... Bag body, 6... Goss section, 7... Goss section, P... Pocket.

Claims (1)

[Scope of utility model registration request] A synthetic resin auxiliary sheet 4 is placed on the back side of two covers 3 formed by covering a core 1 of cardboard or the like with a synthetic resin cover sheet 2, and the edges other than the upper edge are heated to the edges of the cover sheet 2. Glue to form pocket P.
In addition, a synthetic resin bag 5 having an opening at the upper edge is interposed between both auxiliary sheets 4, and gussets 6 are formed on both sides of the bag 5 on both sides of the sheet forming the bag 5. In a file whose edges are thermally bonded to both side edges of the auxiliary sheet 4, the dimension between the both side edges of the core 1 is made smaller than the dimension between the side edges of at least one of the cover sheet 2. A file characterized in that a gore portion 7 is formed between the side edge of the cover sheet 2 and the side edge of the core 1.