JPS627654Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tape core. More specifically, the present invention relates to a tape core that prevents tape telescoping (lateral deviation) and irregular shrinkage distortion (wrinkles).

BACKGROUND ART Conventionally, as a core for tape, one in which the outer peripheral surface of a ring-shaped paper tube is covered with a foam sheet is known.

However, conventional tape cores cannot cope with shrinkage of the tape due to changes in temperature and humidity.
The drawbacks were tape telescoping and irregular shrinkage distortion.

The object of the present invention is to provide a tape winding core that eliminates these conventional drawbacks.

That is, the present invention provides a tape core having a substantially ring-shaped cross section, in which the tape core main body 1 is molded from a hard synthetic resin, and the tape core outer periphery 2 is formed into a continuous wave shape. The present invention provides a tape core characterized in that elastic cushion bodies 3 made of synthetic resin and having a ring-shaped cross section are fixed to the outer periphery 2 of the tape core at equal intervals.

The present invention will be explained below with reference to the drawings. FIG. 1 is a sectional view showing a conventional tape core, and FIGS. 2 a to 2 c are sectional views showing various aspects of the tape core of the present invention.

The tape core body 1 is molded from hard synthetic resin. The tape core body 1 has a substantially ring-shaped cross section, and its outer periphery 2 is formed into a continuous wave shape. Here, when we talk about wave shapes, there are various types, each of which is approximately semicircular, and includes a variety of shapes, from those with a large difference in height between the peaks and valleys to those with a small difference in height. .

Furthermore, elastic cushion bodies 3 made of synthetic resin are fixed to the outer periphery of the tape core 2 at equal intervals. The elastic cushion body 3 has a ring-shaped cross section, and when the tape is wound around the tape core,
It becomes flat due to the contraction pressure of the tape and exerts a cushioning effect. In addition, the elastic cushion body 3 is fixed to the valley part (recess) of the tape core outer periphery 2,
There is no particular limit to the number, but consideration should be given to at least equal distribution. Equal distribution here refers to arranging at equal intervals.

FIG. 2a shows a state in which elastic cushion members 3 are fixed to all the valleys of the tape core outer periphery 2 formed in a continuous wave shape. When a tape is wound around such a tape core as shown in FIG. 3, the elastic cushion bodies 3 become flat due to the contraction pressure of the tape, and adjacent elastic cushion bodies 3 are joined to each other, and this joint Shrinkage strain of the tape is accommodated by the dotted recesses 4. Furthermore, tape telescoping does not occur. In the figure, numeral 5 indicates the tape, and numeral 6 indicates the shrinkage strain of the tape.

In addition, FIG. 2b shows eight elastic cushion bodies 3 equally spaced in the valley portion of the tape core outer periphery 2 formed in a continuous wave shape, and FIG. 2c shows four elastic cushion bodies 3. This indicates a fixed state. In this case, telescoping of the tape can be prevented, but shrinkage distortion of the tape cannot be completely accommodated.
However, with conventional tape cores, shrinkage distortion of the tape occurs irregularly around the tape circumference.
According to the core of the present invention, shrinkage distortion occurs regularly around the circumference of the tape, so not only does the appearance not deteriorate, but the product value is improved.

As described above, the present invention can prevent tape telescope and irregular shrinkage distortion caused by changes in temperature and humidity.

In addition, illustrations of small animals, insects, small birds, etc., scales,
If you print letters, figures, symbols, brand names, color identification, etc. and fix them with adhesive, when you attach them to a tape cutter with transparent or visible sides, the printed display surface will be removed by pulling out the rolled tape. Since it rotates in the tape cutter along with the rolled tape, the length of the rolled tape can be easily measured by checking the rotational movement position of the pattern on the printed display surface, etc., and the pulled out tape can be long or short. This inconvenience can be eliminated. Moreover, since the displayed contents are illustrations, symbols, etc., it is easy to visually assess the tape, and even infants and children in lower grades can enjoy using the tape. Furthermore, the cross section of the tape winding layer is free from dirt and dust, allowing the tape to be used cleanly.

FIGS. 4a to 4f are front views showing various aspects of pressure-sensitive adhesive sheets in which such divisions are displayed. Figure 4 a shows an illustration of a small animal and a scale, Figure 4 b shows color identification, mathematics, and a scale, Figure 4 c shows a brand name and scale, and Figure 4 d shows a scale. "e" indicates symbols and scales; "e" indicates numbers and scales; "f" indicates letters and scales.

Furthermore, by using a circular pressure-sensitive adhesive sheet or film that corresponds to the cross-sectional shape of the tape winding layer, shrinkage of the tape due to changes in temperature or humidity can be prevented. In other words, if such an adhesive sheet or film is not used, the wound tape will shrink due to heating and humidification from the cross section of the tape wound layer, and telescoping of the wound tape will inevitably occur. Alternatively, if a film is used, heating and humidification from the outside can be suppressed, and telescoping of the wound tape can be prevented. According to tests conducted by the present inventors, in the case of a 1-inch winding core, telescoping usually occurs even with a winding of 8 to 10 m, but if such an adhesive sheet or film is used, telescoping can occur even with a winding of 35 m. It has been confirmed that the occurrence of telescoping can be prevented even if FIG. 5 is a sectional view of such an adhesive sheet, in which a printing display surface 7 and an adhesive layer 9 are formed with a sheet 8 in between.

Furthermore, as a tape cutter, Fig. 6 a, b
As shown in FIG.
When using a stationary type tape cutter 12 having a tape cutter 12, if a ring-shaped elastic body 13 is fixed near the cutting teeth 11 and closer to the winding tape rotation part 10 than the cutting teeth 11, then Due to the elastic effect of the ring-shaped elastic body, the end of the tape after cutting is lifted up and away from the cutting teeth 11, making it easy to pinch the end of the tape at all times. Therefore, in the conventional tape cutter, in order to make it easier to pinch the end of the tape, a space is required between the winding tape rotating part 10 that accommodates the winding tape and the cutting tooth part 11 to allow the fingertip to fit, and it is difficult to place the two too close together. However, by fixing the ring-shaped elastic body 13 as described above, it is possible to create an integral design in which the winding tape rotation part 10 and the cutting tooth part 11 are brought close to each other. Easy to create illustrative designs. Furthermore, the shape is not particularly limited and can be made compact. Furthermore, due to the repulsive elasticity applied to the ring-shaped elastic body 13 and the counter tension effect applied to the cutting teeth 11, it also has the advantage that the tape can be easily and smoothly cut. Figure 7 a and b are the 6th
2 is an enlarged cross-sectional view of the vicinity of the cutting tooth portion 11 in the figure, showing a cutting pattern of the tape. FIG. FIG. 7a shows a state in which the tape 5 is pulled out and is about to be cut, and the ring-shaped elastic body 13 is deformed and becomes flat, and as shown by the arrow, a force is applied to return it to its original state. is working. On the other hand, since the force for cutting the tape is applied in the opposite direction, the tape 5 can be cut easily and smoothly. After cutting the tape 5, the end of the tape 5 is lifted away from the cutting teeth 11 by the repulsive force of the ring-shaped elastic body 13, as shown in FIG. 7b, making it easier to pinch the end of the tape 5.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a conventional tape core, FIGS. 2 a to c are cross-sectional views showing various aspects of the tape core of the present invention, and FIG. 3 is a cross-sectional view showing a conventional tape core of the present invention. FIG. 4 is a cross-sectional view showing the state in which the tape is wound around the core; FIGS. 4 a to f are front views showing various aspects of the adhesive sheet with various classification indications; FIGS. 6A and 6B are perspective views showing various aspects of the tape cutter, and FIGS. 7A and 7B are explanatory views showing the state of tape cutting by the tape cutter shown in FIG. 6. DESCRIPTION OF SYMBOLS 1... Tape core body, 2... Tape core outer periphery, 3... Elastic cushion body, 5... Tape.

Claims (1)

[Scope of utility model registration request] In a tape core having a substantially ring-shaped cross section, the tape core main body 1 is molded from a hard synthetic resin, the tape core outer periphery 2 is formed in a continuous wave shape, and the tape core outer periphery 2 is formed in a continuous wave shape. A core for a tape, characterized in that an elastic cushion body 3 made of synthetic resin and having a ring-shaped cross section is fixed to the core 2 at equal intervals.