JP2575110Y2 - Paper string - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper cord mainly used for sealing paper bags of grains such as rice and wheat.

[0002]

2. Description of the Related Art A paper string used for sealing a paper bag for storing grains such as grain or powdered rice, wheat, beans and the like is made of, for example, eight paper cords juxtaposed in parallel and 10 mm in width. Some are formed in the following strips. According to Agriculture, Forestry and Fisheries Standards, such a paper string is required to have a tensile strength of 68 kg or more. In addition to this,
The bag must have such a stiffness in the width direction of the bag opening that it is easy to tie and untie, has a certain rigidity, and does not cause natural opening.

[0003]

The conventional paper cord which satisfies the above conditions is formed by fixing eight paper cords in parallel, and the twisting and bonding processes of the cords are complicated. hand,
Since it had to be performed manually, it was not suitable for mass production and was expensive.

Accordingly, an object of the present invention is to provide a paper string that can be mass-produced while satisfying conditions such as tensile strength.

[0005]

Means for Solving the Problems In order to achieve the above-mentioned object, the invention according to claim 1 is a device in which a band-shaped synthetic resin film wrapped with a band-shaped paper having a width approximately twice as long as one side is provided. The paper cord was folded at a center line along the direction, and further folded in a wavy shape along a bending line perpendicular to the longitudinal direction.

According to a second aspect of the present invention, the band-shaped paper is wrapped so that the seam of the paper coincides with the center line of one side surface along the longitudinal direction of the synthetic resin film, and the valley is formed along the seam. The paper cord according to claim 1 is configured to be folded in a cage.

According to a third aspect of the present invention, each of the strip-shaped synthetic resin films is approximately one-fourth of the strip-shaped paper.
Two synthetic resin films each having a width of, and the two synthetic resin films are formed such that a side edge of each synthetic resin film is substantially at a center line along a longitudinal direction of one side surface of the band-shaped paper. The paper cord according to claim 1 is configured to be packaged side by side so as to match.

[0008]

The present invention has the above-described structure, and has the following effects.

The paper cord according to the first aspect of the present invention is characterized in that a band-like synthetic resin film such as polyethylene or polypropylene is wrapped with paper such as kraft paper or crepe paper,
Furthermore, because it is folded, it has both the tensile strength and rigidity of the synthetic resin film, the ease of knotting and the ease of unwinding because the surface is paper, and the stretching due to the wavy folding process. Rate and zonality are maintained. further,
Since the synthetic resin film can be easily manufactured by wrapping and folding it with paper and performing a wavy folding process, mass production can be realized.

In the paper cord according to the second aspect of the present invention, in addition to the action of the paper cord according to the first aspect, the paper string is folded in a valley along the seam of the wrapped paper. Seams are not exposed to the outside. Therefore, it is possible to more reliably maintain the band property, and there is no increase in the thickness of only the folded portion for folding at the seam.

In the paper string according to the third aspect of the present invention, in addition to the function of the paper string according to the first aspect, two synthetic resin films are juxtaposed with the center line of the paper interposed therebetween. Therefore, folding can be performed more easily and a paper string having a uniform thickness can be obtained.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment shown in the drawings will be described below.

FIG. 1 is a perspective view showing a first embodiment of a paper string according to the present invention.

In FIG. 1, a paper string 1 includes a polypropylene film 2 serving as a core material and a polypropylene film 2.
And crepe paper 3 for packaging. The band-shaped paper string 1 is subjected to a wavy folding process on both sides. The polypropylene film 2 whose strength is increased by a uniaxial stretching operation is used.

The paper string 1 is manufactured by a process as shown in FIG.

First, as shown in FIG.
The m-shaped crepe paper 3 is placed flat and an adhesive 4 is applied to the surface. The adhesive 4 is of a type suitable for bonding the crepe paper 3 and the polypropylene film 2. For example, when a hot melt adhesive is used, the drying time can be shortened, and the productivity is improved.

Next, as shown in FIG. 2B, the polypropylene film 2 having a width of about half the width of the crepe paper 3, that is, a width of about 2 cm, is made to have a common center line along the longitudinal direction with the crepe paper 3. So that the back surface of the polypropylene film 2 and the front surface of the crepe paper 3 are adhered to each other. Further, the peripheral portion of the crepe paper 3 protruding to both sides of the polypropylene film 2 is folded back on the surface of the polypropylene film 2, and the surface of the peripheral portion of the crepe paper 3 and the surface of the polypropylene film 2 are bonded.

As a result, as shown in FIG. 2C, the front and back surfaces of the polypropylene film 2 are adhered to one surface of the crepe paper 3 coated with the adhesive 4, and the entire polypropylene film 2 is wrapped with the crepe paper 3. Will be.

In this state, the seam C formed by both side edges of the crepe paper 3 coincides with the center line along the longitudinal direction of the polypropylene film 2.

Next, an adhesive 5 is applied to the right surface of the seam C, and the seam C, that is, the center line along the longitudinal direction of the polypropylene film 2 is set as a valley fold line, and the whole is folded. The state shown in FIG.

Further, a paper cord 1 shown in FIG. 1 is subjected to a wavy folding process in a direction perpendicular to the longitudinal direction by a roll.
Can be obtained.

The paper cord 1 manufactured in this manner is obtained by wrapping the polypropylene film 3 with the crepe paper 2 and further folding it, so that it has the tensile strength and rigidity of the polypropylene film 3 and the surface is made of the crepe paper 2. Therefore, the knotting property is good, and the elongation and the band property are maintained by folding in a wave shape.

Further, since the device can be easily manufactured by the above-described steps, the manufacturing cost is low and mass production is possible.

Further, since the seam C is not exposed to the outside by being folded along the seam C in a valley fold, the crepe paper 3 is hardly peeled off, and the zoning can be more reliably maintained.
Further, since the paper string 1 is folded at the seam C, only the folded part at the left end in FIG. 2D does not become thicker than the entire thickness, and the paper string 1 having a uniform thickness can be obtained.

FIG. 3 is a perspective view showing a second embodiment of the present invention.

The paper cord 6 is formed by wrapping two polypropylene films 7 and 8 with crepe paper 9 and folding it along a folding line perpendicular to the longitudinal direction.

FIG. 4 is a diagram for explaining a manufacturing process of the paper string 6 according to the second embodiment. As shown in FIG. 4A, an adhesive 10 is applied to the surface of the crepe paper 9, and two polypropylene films 7, 8 are juxtaposed as shown in FIG. 4B. The two polypropylene films 7 and 8 are juxtaposed with each other so that their side edges substantially coincide with the center line along the longitudinal direction of the crepe paper 9.

Then, the peripheral portion of the crepe paper 9 is folded to wrap the entire polypropylene films 7 and 8,
4C, the adhesive 1 is applied to the right side of the seam C.
1 is applied and valley-folded along the seam C to obtain a paper string 6 as shown in FIG.

FIG. 4 shows the paper string 6 of the second embodiment.
Since the folding line at the time of folding back in (c) is the interval between the polypropylene films 7 and 8, the folding process is easy, and the folded portion is hardly thickened, and the paper string having a uniform thickness as a whole is obtained. 6 can be manufactured.

The embodiment of the present invention has been described above.
It is needless to say that the present invention is not limited to the above embodiment, but can be appropriately modified and implemented within the scope of the present invention.

For example, in the illustrated embodiment, a polypropylene film is used as the synthetic resin film. However, other synthetic resin films such as polyethylene can be used, and the material, thickness, width and the like of this synthetic resin film can be selected. By doing so, it is possible to manufacture a paper string that is optimal for the intended use of strength and hardness.

[0032]

According to the paper cord according to the first aspect of the present invention, since the synthetic resin film is wrapped with paper and folded, the tensile strength of the core synthetic resin film is obtained. In addition, it has the rigidity and the binding property of the paper on the surface, and the elongation and the band property are maintained by the corrugated processing. Furthermore, since the synthetic resin film can be easily manufactured by wrapping and folding it with paper and performing a wavy folding process, mass production can be realized.

According to the paper cord according to the second aspect of the present invention, in addition to the effect of the paper cord according to the first aspect of the present invention, the folded paper is folded along the seam of the wrapped paper. , Seams are not exposed to the outside. Therefore, it is possible to more reliably maintain the band property, and there is no increase in the thickness of only the folded portion for folding at the seam.

According to the paper string according to the third aspect of the present invention, since the folding is performed between the two synthetic resin films, the bending process is easy, and the folded portion is more easily folded than the other portions. It is possible to obtain a paper cord having a uniform thickness without becoming thick.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a paper string according to the present invention.

FIGS. 2A to 2D are diagrams for explaining a manufacturing process of the first embodiment.

FIG. 3 is a perspective view showing a second embodiment of the paper string according to the present invention;

FIGS. 4 (a) to 4 (d) are diagrams illustrating a manufacturing process of a second embodiment.

[Explanation of symbols]

 1 paper string 2 polypropylene film 3 crepe paper

Claims (3)

(57) [Scope of request for utility model registration] 1. A band-shaped synthetic resin film wrapped with a band-shaped paper having a width of about twice and folded at a center line along the longitudinal direction of one side surface, and a bending line perpendicular to the longitudinal direction. A paper cord characterized by being folded in a wavy shape along the line. 2. The packaging device according to claim 1, wherein the seam of the band-shaped paper is packaged so as to coincide with a center line of one side surface along the longitudinal direction of the synthetic resin film, and is folded along a valley along the seam. Item 7. The paper cord according to Item 1. 3. The band-shaped synthetic resin film is two synthetic resin films each having a width of about one quarter of the band-shaped paper, and the two synthetic resin films are The paper string according to claim 1, wherein the paper string is packaged so as to be juxtaposed such that the side edge of each synthetic resin film substantially coincides with the center line along the longitudinal direction of one side surface of the band-shaped paper.