JP2005041094A - Bookbinding tape and bookbinding file - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accelerate a processing speed in a hot-melt bookbinding machine. <P>SOLUTION: The bookbinding tape 4 is of a three-layer structure comprising a tape base material 5, a hot-melt thermosensitive adhesive layer 6 and a pressure-sensitive adhesive layer 7. The pressure-sensitive adhesive layer 7 is of a mesh type or a stripe type in such a way that the intermediate hot-melt thermosensitive adhesive layer is exposed into small holes of the mesh or interstices between the stripes of the pressure-sensitive adhesive layer. The spine, face cover and back cover of a booklet to be bound stick to the booklet by a sticking action of the thermosensitive adhesive layer by pressing the bookbinding tape to these members and further, the hot-melt thermosensitive adhesive melts seeping inbetween the pieces of paper by heating the spine of the booklet. Thus the spine part of each page is mutually bonded and the face cover, back cover and bookbinding tape are bonded together by the sticking action of the bookbinding tape. Consequently, the bookbinding process can be performed without heating the face cover and back cover parts and time required for the process can be shortened. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a bookbinding tape and a bookbinding file, and more particularly to a hot-melt type bookbinding tape and a bookbinding file.

In the field of office machines, hot-melt bookbinding tapes and bookbinding machines using this bookbinding tape are known (for example, Patent Document 1, Patent Document 2, etc.). Hot melt type binding tape is a hot melt thermosensitive adhesive layer on one side of a tape such as cloth or heat resistant resin film. Hot melt type binding machine has hot melt type binding tape on the back of the book. A back heater that welds the center of the paper and a clamp and heater that folds both sides (both edges in the short direction) of the hot melt binding tape and welds them to the front and back covers. The back of the bundle of paper in the set is pressed against the center of the hot melt type binding tape, and the hot melt type binding tape is heated by the back heater. Thereby, the melted hot-melt heat-sensitive adhesive penetrates between the papers. At almost the same time as the back bonding process, the clamps and heaters arranged on both sides of the back heater fold the sides of the hot-melt type binding tape and clamp the cover and back cover of the paper bundle. Is pressed against the front cover and back cover. When the booklet is released from the back heater and clamp / heater, the hot-melt heat-sensitive adhesive instantly solidifies, and the backs of the pages of the booklet are bonded to each other, and the booklet is bound to the back and front and back covers. The tape is adhered to complete the bookbinding.

  In this way, the bookbinding tape is hot-melt bonded to the back and front and back cover of the bundle of paper, but the clamp / heater that bonds the bookbinding tape to the front and back covers is generally heated by heat conduction from the back heater. Since it is configured, the thermal energy is smaller than that of the back heater, and it takes time to bond the binding tape to the front cover and the back cover as compared with the back bonding step, and the power consumption is also large.

On the other hand, as a proposal example regarding the structure of the binding tape, there is known an adhesive binding strip in which a thermally active adhesive band is provided at the center of an elongated substrate of the binding strip, and an adhesive matrix is disposed around the thermally active adhesive band ( Patent Document 3). According to this configuration, it is described that the thermally active adhesive band can be prevented from flowing out from both ends in the longitudinal direction of the binding strip during the bookbinding process, and a beautiful finish can be obtained.
JP 09-277740 A JP 07-304279 A Japanese National Publication No. 09-509110

  When using a hot-melt type binding machine with a hot-melt heat-sensitive adhesive layer on one side of the tape, it takes time to bond the binding tape to the front and back covers as described in Background Art. There is a problem that the power consumption is large because the heat efficiency is not good and the heat efficiency is not good.

  In addition, according to Patent Document 3, the adhesive layer on the tape is divided, a hot melt thermosensitive adhesive having a strong adhesive force is applied to the central portion in the lateral direction, and a stripe structure in which an adhesive is applied on both sides of the adhesive layer. If this is done, the bookbinding tape can be crimped to the front and back cover by clamping, and the bookbinding can be speeded up. However, the manufacturing process is complicated to separate and arrange the adhesive layer on the tape. High cost. In addition, in order to cope with various thicknesses of booklets to be bound, it is necessary to provide several kinds of bookbinding tapes with different widths of the hot-melt heat-sensitive adhesive at the center of the bookbinding tape. Cost burden for both users and users.

  Therefore, a technical problem to be solved in order to provide a bookbinding tape that can be speeded up and that is low-cost arises, and the present invention aims to solve the above-mentioned problems.

  The present invention is proposed to achieve the above object, and provides a bookbinding tape comprising a tape base material and a hot melt adhesive layer whose surface is sticky at room temperature.

  The present invention also provides a binding tape comprising a tape substrate, a hot-melt adhesive layer as an intermediate layer, and an adhesive layer having surface tackiness.

  A binding tape comprising a tape base material, a hot-melt adhesive layer as an intermediate layer, and an adhesive layer having surface tackiness, wherein the adhesive layer of the surface layer has tackiness and is melted by heating. Is formed into a mesh shape or a stripe shape, and a binding tape having a structure in which an intermediate hot melt adhesive layer is exposed in a small hole in the mesh of the surface adhesive layer or in a gap between stripes is provided.

  In addition, a bookbinding file using the bookbinding tape is provided.

  When the bookbinding tape of the present invention is pressed against the back and front and back cover of the booklet to be bound, it sticks to the booklet by the action of the adhesive layer or the hot melt adhesive layer having adhesiveness, and heats the back part of the booklet. As a result, the hot melt adhesive melts and penetrates between the paper, and the backs of the pages are bonded to each other. The front cover, back cover, and bookbinding tape are bonded together by the adhesive action of the bookbinding tape, so that bookbinding is possible without heating the front cover and back cover portions, and the time required for bookbinding is shortened.

  In addition, a two-layered binding tape comprising a tape base material and a hot-melt adhesive layer having adhesiveness, or a three-layer structure comprising a tape base material, a hot-melt adhesive layer and an adhesive layer having adhesiveness. The binding tape has a simpler application process compared to the configuration in which the adhesive layer and the pressure-sensitive adhesive layer are separately divided, and since the adhesive layer and the pressure-sensitive adhesive layer are not divided, one type of binding tape is available. The bookbinding tape is versatile enough to handle booklets of various thicknesses.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows the structure of a binding tape 1, in which a hot melt pressure sensitive adhesive 3 is applied to a tape or base 2 of a cloth or a resin film instead of a conventional hot melt heat sensitive adhesive. Hot melt pressure-sensitive adhesive suitable for bookbinding tape is sticky at room temperature, sticking to the object only by applying a slight pressure, and hot melt that melts by heating and penetrates the adhesive surface As an example, an adhesive of ethylene-vinyl acetate copolymer (EVA) having a vinyl acetate content of 50 to 80% can be given.

  FIG. 2 shows another structure of the binding tape 4, which has a three-layer structure of a tape substrate 5, a hot-melt heat-sensitive adhesive layer 6, and a pressure-sensitive adhesive layer 7, with an intermediate hot-melt heat-sensitive adhesive layer. Hot melt heat sensitive adhesives such as EVA, polyamide, urethane, and elastomer are used for 6 and the pressure sensitive adhesive layer 7 on the surface is a hot melt type similar to the two-layered binding tape 1 described above. It may also be one that does not have the properties of a hot melt as long as it is sticky at room temperature and melts upon heating.

  In any case, as shown in FIG. 3, the pressure-sensitive adhesive layer 7 on the surface is formed as a perforated shape or a stripe shape so that the intermediate hot-melt heat-sensitive adhesive layer 6 can be eluted to the surface. In the figure, the hot-melt heat-sensitive adhesive layer 6 is shown in white and the pressure-sensitive adhesive layer 7 is shown in black, and the application pattern of the pressure-sensitive adhesive layer 7 is a circular hole mesh shape of (b), ( Various shapes such as a square hole mesh shape of c), a lattice shape of (d), an oblique lattice shape of (e), a vertical stripe shape of (f), and an oblique stripe shape of (g) are conceivable. Such continuous pattern printing is simple and much easier to manufacture than the configuration in which the adhesive layer is divided and applied as in the “binding strip” of Patent Document 3 described as the prior art. . In addition, there is an advantage that one type of bookbinding tape can be used for booklets of various thicknesses.

  The supply form of the bookbinding tape should be determined according to the bookbinding tape feeding structure of the bookbinding machine, and the long winding roll type, the strip type cut into a predetermined length, or the strip type binding tape is accommodated in the cassette. Supply in form is conceivable.

  FIGS. 4 to 6 show the production process of the bookbinding file, and the case of the bookbinding tape 1 having the two-layer structure of FIG. 1 will be explained. As shown in FIG. When the book back surface is applied, the paper bundle P is temporarily bonded by the action of the hot-melt pressure-sensitive adhesive layer 3. In FIG. 5, reference numeral 11 denotes a back heater of the hot melt binding machine, and clamps 12 are arranged on both sides of the back heater 11. When the preheated back heater 11 is pressed against the bookbinding tape 1 and the bookbinding tape 1 is heated from the sheet substrate side, the hot-melt pressure-sensitive adhesive 3 melts and penetrates into the end face of the paper bundle P.

  Subsequently, as shown in FIG. 6, the clamp 12 is bound and the binding tape 1 is bent at the corners of the back of the paper bundle P and the front cover, and the edges on both sides of the binding tape 1 are pressure-bonded to the front cover and the back cover. The end surface (back) of the paper bundle P must be strongly bonded by hot-penetrating the hot-melt pressure-sensitive adhesive 3, but the adhesive area of the pressure-sensitive adhesive is sufficient because the front and back covers have a large bonding area. is there. Therefore, the clamp 12 of the hot melt bookbinding machine may have a structure in which heat is conducted from the back heater and is heated, or a structure using other heating means, but can be bound without such a structure. . Further, the process of FIG. 5 and the process of FIG. 6 can be performed simultaneously.

  In the case of the binding tape 4 having a three-layer structure in FIG. 2, the hot-melt heat-sensitive adhesive 6 in the intermediate layer is melted in the heating step in FIG. The back of the paper bundle P is strongly bonded by the hot-melt heat-sensitive adhesive 6, and the front cover and the back cover are bonded by the pressure-sensitive adhesive layer 7.

  In this example, only the case where a heater is used as the means for melting the hot melt adhesive is mentioned, but a heating method using ultrasonic waves or electromagnetic induction can be applied. For convenience of explanation, the two-layer structure and the three-layer structure have been described. However, the structure includes a hot-melt adhesive layer having a tape base material and a surface layer adhesiveness, or the tape base material and an adhesive layer having an adhesive property. It is also possible to adopt a multilayer structure in which an intermediate layer is further provided on the basis of a structure in which a hot melt adhesive layer is interposed therebetween.

  Further, the present invention is not limited to the above-described embodiment, and various modifications are possible within the technical scope of the present invention, and the present invention naturally extends to those modified.

Structural illustration of a double-layered binding tape. Structural illustration of a three-layered binding tape. FIG. 3 shows a three-layered binding tape, where (a) is a side view and (b) to (g) are plan views. Illustration of the bookbinding process. It is explanatory drawing of a bookbinding process, (a) is a side view, (b) is a front view. It is explanatory drawing of a bookbinding process, (a) is a side view, (b) is a front view.

Explanation of symbols

1 Binding tape
2 Tape substrate
3 Hot melt pressure sensitive adhesive
4 Bookbinding tape
5 Tape substrate
6 Hot melt heat sensitive adhesive
7 Pressure sensitive adhesive
11 Back heater
12 Clamp

Claims (4)

  A binding tape comprising a tape base material and a hot melt adhesive layer whose surface is sticky at room temperature.   A binding tape comprising a tape substrate, a hot-melt adhesive layer as an intermediate layer, and an adhesive layer having surface tackiness.   A binding tape comprising a tape base material, a hot-melt adhesive layer as an intermediate layer, and an adhesive layer having a surface tackiness, wherein the surface adhesive layer is formed in a mesh shape or a stripe shape, A binding tape having a structure in which the hot-melt adhesive layer is exposed in a small hole in the mesh of the surface adhesive layer or in a gap between stripes.   A bookbinding file using the bookbinding tape according to claim 1, 2 or 3.

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