JPH0111492Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a reinforcing piece for a cover used when binding a booklet.

When binding many sheets of paper into one booklet, the booklet is thick (for example, the thickness is 100 mm).
mm). When you open a booklet that is thickly bound like this, the back of the booklet is folded into a dogleg shape, and the back surface is also folded in the same way, spoiling the appearance.Furthermore, when the spine is folded like this, the strength of the back is also reduced. do. In order to avoid this, as shown in Fig. 1, among the covers 1 used during bookbinding,
A structure in which a reinforcing piece 3 made of a metal piece or a resin piece is attached to the inner surface of the portion 2 that becomes the back cover has been separately proposed (see Utility Model Application No. 56-80214 and Utility Model Application No. 57-189872).

If a book is bound with such a reinforcing piece 3 attached to the cover, the strength of the spine part 2 of the cover 1 will be increased by this reinforcing piece 3, and even if the booklet is opened, the strength of the back will be increased by the reinforcing piece 3. It is maintained by the reinforcing pieces and does not bend or bend, and even if the booklet is opened and then closed again, the restoring elasticity of the reinforcing pieces allows it to easily return to the state before it was opened, which is extremely convenient. is good.

By the way, the reinforcing piece 3 described above needs to be attached to the inner surface of the spine portion 2 of the cover prior to binding. Therefore, in the past, a pressure-sensitive adhesive was applied to one side of the reinforcing piece 3 over the entire surface, and a release paper was pasted on that surface. The exposed adhesive allowed it to be attached to the inner surface of the spine.
However, with this configuration, it is difficult to easily bend the reinforcing piece due to its own springiness, so it is impossible to bend the reinforcing piece in order to peel off the release paper. was extremely troublesome. In order to make this type of release paper easier to peel off, cuts are made in the release paper, but for materials with spring properties such as reinforcing pieces, such cuts cannot be made. However, peeling off the release paper is troublesome, no different than when no cuts are made.

The purpose of this invention is to make it easier to peel off the release paper attached to the surface of the reinforcing piece used for reinforcing the cover when a pressure-sensitive adhesive is applied to the reinforcing piece.

An embodiment of this invention will be described with reference to the drawings. When the reinforcing piece 3 is made of metal, it is formed by punching out a metal plate to which no adhesive has been applied. When it is made of resin, it is constructed by resin molding. Then, as shown in FIG. 2, a pressure sensitive adhesive layer 4 is formed on one surface thereof. This pressure-sensitive adhesive layer 4 is used to adhere to the spine portion 2. FIG. 2 shows a state in which a sheet as a release paper, which will be described later, has already been peeled off.

According to this idea, a sheet 5 (made of paper or resin) carrying a transferable pressure-sensitive adhesive on its surface is used to form a pressure-sensitive adhesive layer 4 on the surface of the reinforcing piece 3. As shown in FIGS. 3 and 4, this has a pressure-sensitive adhesive 6 transferably supported on one surface of the sheet 5. This sheet 5 serves as a release paper. Here, "transferable" means that the reinforcing piece 3 is attached to the sheet 5 so that the pressure-sensitive adhesive 6 is in contact with the reinforcing piece 3, for example. Thereafter, when the sheet 5 is peeled off from the reinforcing piece 3, the pressure-sensitive adhesive 6 that had been carried by the sheet 5 until then adheres to the reinforcing piece 3. This is called pressure-sensitive adhesive transfer, and a pressure-sensitive adhesive capable of such transfer is used in this invention.

In this invention, a large number of reinforcing pieces 3 are attached to a long sheet 5 using a pressure-sensitive adhesive 6. In other words, each reinforcing piece 3 is held and connected by the sheet 5. Since the reinforcing piece 3 is attached to the pressure-sensitive adhesive 6, it does not adhere to other objects. When not in use, it is rolled up and stored in a required case. When using,
Each reinforcing piece 3 is peeled off from the sheet 5. sheet 5
Since it is flexible like paper, it can be bent sufficiently. Therefore, after bending the sheet 5 sufficiently between the adjacent reinforcing pieces 3,
Hold the reinforcing piece 3 with one hand and the sheet 5 with the other hand.
By pulling , the reinforcing piece 3 can be easily peeled off from the sheet 5. As shown in FIG. 2, a pressure-sensitive adhesive layer 4 is formed on the peeled-off reinforcing piece 3 by transferring the pressure-sensitive adhesive 6, so using this,
Attach it to the spine section 2 as shown in Figure 1.

In addition, one or both of the reinforcing pieces 3 (both in the example shown)
If you leave the edge 3A and attach it to the sheet 5, you can hold this edge in your hand, making it easier to peel off the sheet 5. Also, for the same reason, the back This is convenient because the reinforcing piece can be easily positioned on the cover portion 2. Since the reinforcing piece 3 is embedded in bookbinding glue (for example, hot melt adhesive) during bookbinding, a pressure-sensitive adhesive layer 4 is provided at one or both ends 3A of the reinforcing piece 3. There is no problem if you don't leave it there. Also, in the figure, the sheet 5 is attached to a plurality of reinforcing pieces arranged in a line, but instead of this, a large number of reinforcing pieces may be attached to a wide sheet 5 in the vertical and horizontal directions. .

The sheet used here needs to be a sheet carrying a transferable pressure-sensitive adhesive as described above. As this type of sheet, there is one in which an adhesive is applied to both sides of a base material such as thin paper and the adhesive is applied to a release paper, but this is not suitable for use as a reinforcing piece. The reason for this is that the reinforcing piece is attached using an adhesive applied to one side of the base material, but when the reinforcing piece is removed from the release paper in order to be used, the adhesive tears off. This is because there is no such thing.

As detailed above, according to this invention, even if a reinforcing piece is attached to the sheet that carries the pressure-sensitive adhesive used to attach it to the spine of the cover, it will be extremely easy to peel it off in the future. This has the effect of significantly improving the workability.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the cover, FIG. 2 is a perspective view of the reinforcing piece, FIG. 3 is a perspective view showing an embodiment of this invention, and FIG. 4 is a perspective view showing the state in which it is turned over. 2... Back cover portion, 3... Reinforcement piece, 5... Sheet, 6... Pressure sensitive adhesive.

Claims (1)

[Scope of utility model registration request] A plurality of reinforcing pieces for reinforcing the spine portion of the cover are attached to a flexible sheet having a transferable pressure-sensitive adhesive on the surface thereof, and the reinforcing pieces are attached to the spine portion of the cover. A reinforcing piece device for a cover sheet, which is releasably attached so that the pressure-sensitive adhesive is transferred.