JPH0221487Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a ball of cord for bundling.

As is well known, string beads used in binders, knotters, etc. of agricultural machinery or other binding machines are
As shown in FIG. 1, a string 1 is spirally reciprocated in the axial direction, wound up into a cylindrical shape, its outer peripheral surface is covered with a heat-shrinkable film 2, and the film 2 is heated and shrunk for packaging ( Hereinafter, this packaging will be referred to as "heat-shrinkable film packaging"), and is used by letting out the string 1 from the center of the string ball 3.

As shown in FIG. 2, when the string ball 3 is used up to or near its outermost layer, there is nothing to support that layer, and due to the weight of the string 1 itself,
Also, due to vibrations of the tying machine and fluctuations in the tensile force of the string 1 being fed out, the string layer collapses and the string 1 gets tangled as shown in Figure 3, making it impossible to use it until the end. was.

As prior art techniques for solving the above-mentioned drawbacks, those described in Japanese Utility Model Publication No. 11727/1982 and Japanese Utility Model Publication No. 12840/1988 are well known. The former is a string ball whose outermost layer is entirely or partially coated with an adhesive and covered with a heat-shrinkable film.

According to this conventional technology, if the adhesive is applied to the entire surface of the outermost layer, a large amount of adhesive is required, which increases the cost. There was a problem that it could adhere to the machine and contaminate the machine. Furthermore, depending on the way the adhesive was applied, adjacent strings could be tightly adhered, and several turns could come out at once. In addition, when applying the adhesive partially, as described above, there is a risk that the area where the adhesive is applied will pop out all at once. Moreover, in the case of twill-wound string balls, as shown in Fig. 2, a space 4 is formed in the same winding layer where the string does not cross the circumference. Adhesive may not be applied to the layer. In such a case, there is a drawback that collapse of the layer near the outermost layer cannot be effectively prevented.

In the latter conventional technique, the end of the string ball is hardened with adhesive to prevent the string from collapsing.
According to this, collapse can be effectively prevented from the beginning of use until the latter half of the period, but when the string is used near the outermost layer, the force supporting the string becomes weaker, so the end part has the disadvantage of popping out all at once. Ta.

Therefore, in order to solve the above-mentioned problems, the applicant has already filed the application for Utility Model Application No. 58-53911.
We have proposed a string ball for binding that uses a small amount of adhesive, does not stick to the string and is not drawn out, and can effectively prevent even layers near the outermost layer from collapsing.

As shown in FIGS. 4 and 5, this new binding string ball is made by spirally reciprocating a string 1 and winding it up into a cylindrical shape. 5 is attached and the outer periphery is further wrapped with a heat shrink film.

According to this novel string ball 3, the outermost layer of the string ball is held by the adhesive layer 6 of the label 5, so the string can be used to the end without collapsing as shown in FIG. It is possible.

However, when the label 5 is thin, the holding force of the outer layer of the string is weak, and as shown in FIG. 6, the label 5 itself loses its shape, making it impossible to unwind the string from now on.

In addition, if the material of the string 1 is natural fiber such as linen or other water-absorbing material, or if the surface of the string is fluffy, the adhesive layer 6 on the back side of the label 5
The adhesive seeped into the string 1, and its adhesive strength became strong, causing the label 5 to collapse as shown in FIG.

Therefore, the present invention is suitable for cases where the label is thin or
To provide a lace ball for bundling that does not lose its shape until the end even when the string is fluffy.

Therefore, the feature is that in the same winding layer of a string ball formed by cross-winding a string into a cylindrical shape, a plurality of spaces where the string does not cross the circumference are formed at predetermined intervals in the circumferential direction. In a core-type tying ball in which the string is fed out from the center of the cylindrical string ball, the width is larger than the circumferential pitch of the space formed in the outermost layer of the string ball, and the back side A label having an adhesive layer is affixed to the outer circumferential surface of the outermost layer along the cylindrical generatrix along its entire length, and also in contact with the string of the next layer from the space of the outermost layer, The outer peripheral surface of the string ball to which the label is attached is wrapped in a heat-shrinkable film, and the film and the label are adhered.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

First, a case where the present invention is applied to a twilled string ball will be explained.

What is shown in FIG. 7 is an explanatory diagram of twilling.
When the string 1 is reciprocated in the axial direction in a spiral manner with a fairly large lead and wound into a cylindrical shape, it is twill-wound.

Figure 8 is an external view when making 4 reciprocations, and the 9th
The figure shows one layer completely rolled up. As is clear from FIG. 9, in twill winding, there are spaces 4 where the string 1 does not cross the circumference in the same layer.
are formed at predetermined intervals in the circumferential direction and the generatrix direction. Figure 10 shows the state of winding in multiple layers,
From said space 4 the next layer is exposed.

For example, to form a cylindrical string ball with an outer diameter of the final layer of about 15 cm and a generatrix length of about 25 cm, the wire diameter is about 2.
When a string of mm length is used and the lead is reciprocated in about 21/4 turns from one end to the other end, the spaces 4 are formed at four locations in the circumferential direction and at four locations in the generatrix direction in the same winding layer.

Next, to explain the case of letting out the string 1 from the string ball 3, the string ball 3 shown in FIG. 10 is used by letting out the string 1 from its center until it reaches the next outermost layer. When reaching , the lower string is unwound from the part shown by the imaginary circle in FIG. 10, and the outermost layer space 4 is sequentially opened. When the layer next to the outermost layer is completely unwound, the space 4 of the outermost layer is completely opened, as shown in FIG. 9, and only the outermost layer remains. As shown in FIG. 8, the outermost layer is also rewound one after another.

In the present invention, when the string 1 is unwound, especially when the outermost layer and the next layer are unwound, a label 5 is attached to the outermost layer as shown in FIGS. 11 and 12 in order to prevent the layers from collapsing. pasted on the outside.

The width L of the label 5 is at least larger than the circumferential pitch l of the space 4 formed in the outermost layer, as shown in FIG. This label 5
is attached along its entire length along the busbar. On the back side of the label 5, as shown in Fig. 13,
An adhesive layer 6 is provided.

Both circumferential edges of the label 5 are bent outward to form a bent portion 7. In this bent portion 7, the adhesive layer 6 faces the surface.

After the label 5 is attached, the outer periphery of the label 5 is covered with a heat-shrinkable film 2, and the film 2 is heat-shrinked.

As shown in FIG. 13, the label 5 is pressed and stuck from the outside so that the adhesive layer 6 contacts the string 1 of the next layer from the space 4 of the outermost layer.

In addition, when packaging with a heat shrink film, by strongly shrinking the film 2, the front surface of the label 5 is pressed with the film 2, and the adhesive layer 6 on the back surface is pressed.
is configured to reliably contact the surface of the string ball 3.

During the heat-shrinkable film packaging, the adhesive layer 6 of the folded portion 7 of the label 5 is attached to the heat-shrinkable film 2.
is glued to.

The adhesive is attached to the string 1 glued to the back side of the label 5.
Any material that can be peeled off with an extremely small amount of force is sufficient.

Further, the adhesive force between the heat-shrinked film 2 and the label 5 may be at least greater than the adhesive force between the back surface of the label 5 and one winding of the string.

According to the above embodiment of the present invention, the outermost layer of string balls 3 and the next layer of string 1 are adhered to the back surface of the label 5 by the adhesive layer 6 on the back surface of the label 5. especially,
Since the width L of the label 5 is larger than the pitch l of the space 4 in the outermost layer, even if the label 5 is attached to any position on the circumference, the label 5 will always close the space 4. , therefore, the string 1 of the next layer of the outermost layer
can be reliably bonded.

Therefore, even if the label 5 is attached by a machine, there is no need to determine the position for attaching the label 5, and the label attachment can be automated.

In this way, the string 1 of the outermost layer and the next layer is
During one rotation of the string ball, the label 5 is adhered at at least one place, so that the layers of the string 1 do not collapse when the string 1 is let out.

Furthermore, the fact that the outermost layer and the next layer do not collapse means that the layers near the outer layer also become difficult to collapse. That is, the layers near the outer layer are held by the outer layer.

In addition, the adhesive layer 6 on the back side of the label 5 only adheres the string 1, and only a small amount of adhesive adheres to the surface of the string 1 peeled off from the label 5, compared to the case where adhesive is applied. , the amount of adhesion can be said to be nil, and therefore no contamination of the machine by the adhesive occurs.

Furthermore, since the string 1 is bonded to the label 5 via the adhesive layer 6, when it is peeled off from the label 5,
Because it does not affect the adjacent winding string,
The strings 1 are peeled off sequentially, and there is no possibility that a large amount of string 1 is let out at once.

Furthermore, in the embodiment of the present invention, since the label 5 and the film 2 are bonded together, the label 5 will not lose its shape even if the label 5 is thin. Further, even in the case of a fluffy string, the label 5 does not lose its shape, and the string can be used to the end.

In the case shown in FIG. 14, both ends of the label 5 in the longitudinal direction are bent, and the effect is the same as that of the above embodiment.

In the case shown in FIG. 15, the label 5 is not folded and an adhesive is appropriately applied to its surface.

In short, the present invention only needs to adhere the label 5 and the film with a predetermined adhesive force (a force stronger than peeling off a single string on the back of the label) and prevent the label 5 from separating from the film 2.

Therefore, in this invention, "adhesion" means:
The term does not only mean adhesion using an adhesive, but has a broader meaning such as welding, fusing, joining, etc. Therefore, this also includes a case where a double-sided adhesive tape is interposed between the label and the film, or a case where the label and the film package are thermally welded.

Moreover, the winding method of the string ball is not limited to twill winding.

According to the present invention, since the outermost layer of the string ball is held through the label adhered to the film, when the string is fed out, the label does not lose its shape or the vicinity of the outer layer collapses, and the string remains effective until the end. can be used. Moreover, since the adhesive does not adhere to the string itself, there is no chance of contaminating machines, etc.
In addition, a label is absolutely necessary to indicate the product name, handling precautions, etc., and is normally attached to the outer circumference of the string ball.Using such a label prevents the string ball from collapsing. Because there are
It can be implemented with the same equipment and production costs as conventional methods. In addition, since the width of the label is larger than the pitch of the space, even if the label is pasted at any position on the circumference, the label will always block the space, and the next layer after the outermost layer will be You can reliably attach the string. Therefore, when a label is pasted by a machine, there is no need to determine the position of the label to be pasted, and label pasting can be automated, resulting in great practical effects.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing a string ball for twill binding, Figure 2 is a perspective view of the string ball in Figure 1 used up to the final layer, and Figure 3 is an explanation showing the state in which the string ball has collapsed. figure,
Fig. 4 is a perspective view of a string ball showing a comparative example, Fig. 5 is a sectional view of the same, Fig. 6 is an explanatory diagram of its use, Fig. 7 is an explanatory view of a twilled string ball, and Fig. 8 is an illustration of a twilled string ball. Figure 9 is a front view when a part of one layer is rolled, Figure 9 is a front view when it is completely rolled in one layer, Figure 10 is a front view when multiple layers are rolled, Figure 11 is an explanatory diagram of the embodiment of the present invention. , Fig. 12 is a perspective view of the same, Fig. 13 is a sectional view of the same, Fig. 14 and Fig. 1
FIG. 5 is a perspective view showing another embodiment. 1... String, 3... String ball, 5... Label, 6...
Adhesive layer, 7...Bending portion.

Claims (1)

[Claims for Utility Model Registration] In the same winding layer of a string ball formed by cross-winding a string into a cylindrical shape, a plurality of spaces where the string does not cross the circumference are formed at predetermined intervals in the circumferential direction, and in a hollow type tying ball in which the string is fed out from the center of the cylindrical string ball, the width is larger than the circumferential pitch of the space formed in the outermost circumferential layer of the string ball, and the string ball is bonded to the back surface. A label having an agent layer is affixed to the outer circumferential surface of the outermost layer along the cylindrical generatrix over substantially its entire length, and also in contact with the string of the next layer from the space of the outermost layer, and the label The outer peripheral surface of the string ball to which is attached is wrapped in a heat-shrinkable film, and the film and the label are adhered to each other.