KR102747756B1 - Label for PET bottle - Google Patents

Abstract

The present invention relates to a PET bottle label, and more specifically, to a PET bottle label which utilizes the property of a label that is heat-shrinkable around a PET bottle by a transverse shrinkage heating method to be easily cut in the transverse direction, thereby inducing a cut by twisting applied to the label when opening a cap to open the contents sealed in a disposable PET bottle, thereby allowing the cracked label itself to be easily removed from the PET bottle, thereby facilitating recycling.

Description

{Label for PET bottle}

The present invention relates to a PET bottle label, and more specifically, to a PET bottle label which utilizes the property of a label that is heat-shrinkable around a PET bottle by a transverse shrinkage heating method to be easily cut in the transverse direction, thereby inducing a cut by twisting applied to the label when opening a cap to open the contents sealed in a disposable PET bottle, thereby allowing the cracked label itself to be easily removed from the PET bottle, thereby simplifying recycling, and in some cases, allowing the cracked label to be attached to the PET bottle for a certain period of time and to be easily removed when necessary.

Disposable PET bottles, such as regular PET bottles, mostly have labels attached to their surface that provide information such as advertising text about the substances contained in the PET bottle or the ingredients and content.

However, due to the recent social atmosphere of trying to protect the environment by preventing indiscriminate use of labels, label-free PET bottles are being distributed. However, since the ingredients of the material packaged in the PET bottle cannot be specifically identified, it causes confusion when used, and in particular, since a specific trademark cannot be clearly expressed, there is a problem of low advertising effect from the company's perspective, and as sales are decreasing, the problem of low utility is occurring, so PET bottles with labels applied again are the majority.

These PET bottle labels are formed by printing content on double-sided coated paper or film-type surfaces, and an oil-based adhesive is sometimes used to adhere them to the PET bottle.

At this time, while the disposable PET bottles are mostly made of polyester resin, the label attached to them is made of polypropylene or polyvinyl chloride resin film, so they must be separated and disposed of when recycling PET bottles.

In the past, when separating a PET bottle and the resin film attached to the outer surface of the PET bottle, i.e., the label, the label was completely fixed to the outer surface of the PET bottle by an adhesive, so the task of removing it was very difficult. In addition, most labels did not have a structure that was easy to remove, so it was difficult and cumbersome to separate and remove them from the outer surface of the PET bottle. As a result, it is rare for general users to separate the PET bottle and the label after using the PET bottle and dispose of them separately.

Even if one wants to remove the label directly, one must cut a portion of the label with a separate knife or scissors, and forcibly tear off the portion of the label that is attached to the PET bottle with adhesive. At this time, due to the excessive adhesive strength of the adhesive, a significant amount of label residue that cannot be torn off from the PET bottle body remains on the area of the PET bottle body where the adhesive was applied.

In this case, the stuck residue may require separate chemical treatment or cleaning at the recycling center, making recycling difficult.

In other words, recycling companies are facing increasing preprocessing work to individually remove labels from PET bottles, and an unnecessarily large amount of manpower is being invested in recycling PET bottles, which is not reasonable when considering the purpose of recycling.

Publication patent 10-2022-0060948

The present invention has been created to solve the above-described problems of the prior art, and uses the property of a heat-shrinkable label around a PET bottle that makes it easy to cut in the transverse direction by a transverse shrinkage heating method, so that when opening a cap to open the contents sealed in a disposable PET bottle, the label is twisted to induce cutting, thereby allowing the cracked label itself to be easily removed from the PET bottle, thereby simplifying recycling, and in some cases, allowing the cracked label to be attached to the PET bottle for a certain period of time and to be easily removed when necessary.

The present invention provides a means for achieving the above object, wherein the label is formed into a cylindrical structure so as to wrap around the PET bottle from all sides by heat shrinking in a transverse direction while being covered over the outside of the PET bottle, and the label is characterized in that the upper end is formed to extend to the upper edge of the PET bottle cap when heat shrinking, and the lower end is formed to extend to the lower edge of the PET bottle body so as to be configured to closely adhere to the PET bottle.

In addition, it is characterized by a cut-inducing hole being formed through a certain area so that the side of the PET bottle is exposed.

In addition, the upper part of the incision guide hole is characterized in that it is aligned with the lower part of the lid or is located at a specific point within the section between the lower part and the upper part of the lid.

In addition, the above-mentioned incision-inducing hole is characterized by having an elliptical shape that is long vertically.

In addition, it is characterized in that a cutting guide line is formed around the upper portion of the cutting guide hole so that the cutting is guided toward the edge of the cutting guide hole according to the rotational separation of the PET bottle cap.

The present invention utilizes the property of a heat-shrinkable label around a PET bottle that makes it easy to cut in the transverse direction by a transverse shrinkage heating method, so that when a cap is opened to open the contents sealed in a disposable PET bottle, the label is twisted and cut, thereby allowing the cracked label itself to be easily removed from the PET bottle, thereby facilitating recycling. In addition, in some cases, the cracked label can be attached to the PET bottle for a certain period of time, and can be easily removed when necessary, thereby providing the advantageous effect.

Figure 1 is a drawing illustrating a process in which a label according to the present invention is heat-shrinked onto a PET bottle.
Figure 2 is a drawing schematically illustrating the cross-sectional configuration of a PET bottle with the label shown in Figure 1 attached thereto.
Figure 3 is a drawing for explaining an example in which a cutting-inducing hole is applied.
Figure 4 is a drawing showing the development of a label paper with the first horizontal line applied.
Fig. 5 is a drawing schematically illustrating the upper configuration of a PET bottle to which the label of Fig. 4 is applied.
Figure 6 is a drawing showing an unfolding view of a label sheet to which another embodiment of the first cross-section is applied.
Fig. 7 is a drawing schematically illustrating the upper configuration of a PET bottle to which the label of Fig. 6 is applied.
Figure 8 is a drawing showing an unfolding view of a label sheet to which another embodiment of the first cross-section is applied.
Fig. 9 is a drawing schematically illustrating the upper configuration of a PET bottle to which the label of Fig. 8 is applied.
Figure 10 is a drawing showing the development of a label with a second horizontal line applied.
Fig. 11 is a drawing schematically illustrating the upper configuration of a PET bottle to which the label of Fig. 10 is applied.
Figure 12 is a drawing showing the development of a label sheet to which the first longitudinal line is applied.
Fig. 13 is a drawing schematically illustrating the upper configuration of a PET bottle to which the label of Fig. 12 is applied.
Figure 14 is a drawing showing an unfolded view of a label with a notch applied.
Figure 15 is a drawing exemplarily showing a state in which the label is segmented into upper and lower sides as the lid is rotated and separated.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to more completely explain the present invention to those with average knowledge in the art. Therefore, the shapes of elements in the drawings may be exaggerated to emphasize a clearer explanation. It should be noted that in each drawing, the same parts are sometimes illustrated with the same reference numerals. Detailed descriptions of well-known functions and configurations that are judged to unnecessarily obscure the gist of the present invention are omitted.

The label (1) according to the present invention is a label (1) wrapped around the outside of a PET bottle (2) to provide information such as the ingredients and content of the material contained in the PET bottle (2), advertising text, and trademark. The label (1) performs a function as a packaging means by maintaining a state of wrapping around the outside of the PET bottle (2) when the cap (2a) is connected to the body (2b) of the PET bottle (2) before opening the contents sealed in the PET bottle (2). However, when the cap (2a) is rotated and separated from the body (2b) of the PET bottle (2) to open the contents sealed in the PET bottle (2), a natural cut is induced at the boundary point between the cap (2a) and the body (2b) in conjunction with the rotation of the cap (2a), so that the label (1) can be easily removed from the PET bottle (2), so that the label (1) can be forcibly removed from the PET bottle (2) or cannot be removed when the contents of the PET bottle (2) are opened without the need to consciously remove it for recycling of the used PET bottle (2). It is possible to easily induce separation and discharge of PET bottles (2) and labels (1) by making it easy to be in an easy state.

That is, the label (1) according to the present invention can be easily removed from the PET bottle (2) with just a one-touch rotation operation of the cap (2a), thereby eliminating cumbersome actions such as consciously removing the label (1) and, since it can be forcibly removed when the contents of the PET bottle (2) are opened, even if there is no intention to remove the label (1), it provides convenience in that it can inevitably be removed from the PET bottle (2) after use of the PET bottle (2).

To this end, the label (1) according to the present invention can be structured to adhere to the PET bottle (2) by heat shrinking in the transverse direction (h) while being covered on the outside of the PET bottle (2).

At this time, it is preferable that the label (1) before heat shrinkage has a cylindrical structure with both the top and bottom open so as to wrap the PET bottle (2) from all sides, and when heat is uniformly applied from the outside of the label (1) while the label (1) is placed on the outside of the PET bottle (2), the label (1) can be heat-shrinked and evenly adhered and fixed to the outer surface of the PET bottle (2). In particular, when the label (1) is labeled to the PET bottle (2) in this manner, the label (1) itself undergoes heat shrinkage to correspond to the shape of the outer surface of the PET bottle (2), so that the label (1) can be maintained on the outer surface of the PET bottle (2) even without adding a separate adhesive, so that no separate residue is left on the PET bottle (2) when the label (1) is removed.

In particular, it is desirable that the upper and lower lengths of the cylindrical label (1) be formed so that, when heat-shrinking, the upper end extends to the upper edge of the cap (2a) of the PET bottle (2) and the lower end extends to the lower edge of the body (2b) of the PET bottle (2) so that it can be configured to fit closely to the PET bottle (2), thereby sufficiently covering the entire PET bottle (2).

That is, the entire circumference of the labeled PET bottle (2) except for the central portion of the upper surface of the cap (2a) and the central portion of the lower surface of the body (2b) can be covered by the label paper (1), and the label paper (1) covering the body (2b) and the cap (2a) of the PET bottle (2) can be easily removed from the PET bottle (2) along with the removal of the cap (2a) as the upper portion is twisted during the rotational separation process of the cap (2a) and the cutting is induced.

Meanwhile, when heat-shrinking the label paper (1), the method of inducing heat shrinkage by applying heat in the transverse direction (h) of the label paper (1) is called the transverse shrinkage heating method. When the label paper (1) is heated by applying this transverse shrinkage heating method, the label paper (1) shrinks only in a single transverse direction (h) toward the PET bottle (2), and due to the material characteristics of the label paper (1) shrunk in this way, cutting in only a single transverse direction becomes easy.

On the other hand, the label (1) that has been heat-shrinked by the transverse shrinkage heating method has a characteristic that it is not easy to cut in the longitudinal direction (v), and due to this characteristic, when the cap (2a) of the PET bottle (2) is held and turned to rotate and separate the cap (2a), a strong torsional moment is also applied to the portion of the label (1) that wraps around the outer surface of the cap (2a), and thus, the label (1) can be easily cut by simply rotating and separating the cap (2a) by inducing a cut along the transverse grain of the label (1) at a point where the shear stress of the label (1) is strongest, for example, at the boundary point between the neck of the cap (2a) and the body (2b).

The label (1) can have a cylindrical structure before being applied to a PET bottle (2), and the cylindrical label (1) can be supplied to a labeling company by continuously cutting the label (1) base material that has been developed into a plate shape during manufacturing, rolling the label (1) base material of a predetermined area into a cylinder, and joining both ends, or the label (1) that has been continuously drawn and then cut into a predetermined length can be supplied to the labeling company.

When the label (1) is unfolded into a plate shape, the upper and lower length of the label (1) can be formed longer than the upper and lower height of the PET bottle (2) considering the shrinkage rate.

Meanwhile, even if the label (1) is heat-shrinkable by the transverse shrinkage heating method, the label (1) that is in close contact with the outer surface of the body (2b) sometimes becomes difficult to remove from the body (2b) depending on the direction in which the label (1) is cut. Accordingly, a cut-inducing hole (10) is formed through a certain area in the label (1) so that the side of the body (2b) of the PET bottle (2) is exposed, so that the label (1) around the cut-inducing hole (10) can be cut more easily during the cutting process of the label (1).

The cutting guide hole (10) means a hole that penetrates the thickness direction of the label (1) and can have various shapes, but preferably, it can penetrate in a shape of an ellipse or a streamlined shape that is long vertically. In some cases, the cutting guide hole (10) can be formed in the shape of a specific company's trademark, or can be modified into a unique font or geometric shape that can add a point to the appearance of the PET bottle (2).

Basically, the cut-in-guiding hole (10) is a means for making it easier to remove the label (1), but it can also perform additional functions such as exposing a part of the body (2b) of the PET bottle (2) covered with the label (1) to check the remaining amount of the beverage sealed in the PET bottle (2), or reducing the manufacturing cost by reducing the area occupied by the label (1) itself to save raw materials.

To this end, it is preferable to understand the incision-inducing hole (10) as a concept substantially different from the fine hole formed in a dotted line to induce tearing of packaging paper or label paper (1) in the field of packaging paper or label paper, and as a concept of a large hole that can expose a sufficient area of the side of the PET bottle (2).

A plurality of such incision guide holes (10) can be formed along the circumferential direction of the label (1), and the spacing between the plurality of incision guide holes (10), the circumferential width, the vertical length, etc. are not particularly limited, but the position of the upper end thereof must be located at the boundary area between the lid (2a) and the neck or at the upper point of the boundary area.

Here, the boundary between the lid (2a) and the neck may mean the lowest point of the lid (2a) just before rotational separation, and this boundary may be specified as the point where the greatest shear stress is generated on the label (1) to which a torsional moment is applied when rotational separation of the lid (2a) is initiated.

Accordingly, the label (1) is likely to be cut at a point corresponding to the bottom of the lid (2a) when the lid (2a) is rotated and separated, and as the label (1) is gradually cut according to the rotation and separation of the lid (2a), it is structurally difficult for the cutting direction to deviate from the upper edge (11) of the cut-inducing hole (10), so when the cut-in point reaches the edge (11) of the cut-inducing hole (10), the upper side (1a) and the lower side (1b) of the label (1) can be completely separated from each other.

At this time, the upper side (1a) of the label (1) is separated along with the lid (2a), and the lower side (1b) of the label (1) is peeled off from the body (2b) by its own weight, or even if it is not completely removed from the body (2b), the lower side (1b) of the label (1) remaining in the body (2b) is cracked so that both sides are completely disassembled based on the cut-inducing hole (10), and the holding force is significantly reduced, so that it hangs in a state where it can be easily removed when necessary.

For this reason, it is most desirable that the upper part of the incision guide hole (10) be aligned with the lower part of the lid (2a) or be located at a specific point within the section between the lower part and the upper part of the lid (2a). If the incision guide hole (10) is structured to be spaced downward from the height of the lower part of the lid (2a), there is a high possibility that the incision direction will deviate from the incision guide hole (10). As the incision direction does not penetrate the incision guide hole (10), the upper side (1a) label (1) that follows the lid (2a) and is segmented will be removed, but no cracks will occur around the incision guide hole (10) of the lower side (1b) label (1) remaining in the body (2b), making it difficult to easily remove the label (1) that is in close contact with the body (2b).

Meanwhile, a cutting guide line (20) can be formed around the upper portion of the cutting guide hole (10) so that the cutting is guided toward the edge (11) of the cutting guide hole (10) according to the rotational separation of the cap (2a) of the PET bottle (2).

That is, when the lid (2a) is rotated and separated, the initial incision of the label paper (1) can be induced at the point of the incision guide line (20), and the subsequent incision can be continued along the incision guide line (20) to the incision guide hole (10), thereby inducing cracks in the label paper (1) around the incision guide hole (10).

The cutting guide line (20) means a line formed by a solid line, a dotted line, or a combination thereof that extends horizontally or vertically on the upper part of the label (1). Here, the solid line means a line formed continuously as a single line that completely cuts the label (1) within a unit length, and the dotted line may mean a line formed intermittently as fine holes within a unit length.

For example, the above-mentioned cutting guide line (20) may include a first transverse line (21) extending in the transverse direction as shown in FIGS. 4 and 5.

The first horizontal line (21) is parallel to an imaginary horizontal line (p) indicating the lowest point of the lid (2a) and can be formed at the same height as the imaginary horizontal line (p). That is, the first horizontal line (21) can be positioned on the same line as the lowest point of the lid (2a).

The first horizontal line (21) may be made entirely of dotted or solid lines, or may be made of dotted and solid lines alternating over a certain section.

The end of the first transverse line (21) is connected to the edge (11) of the cutting guide hole (10), or is spaced apart from the edge (11) of the cutting guide hole (10) by a certain distance, and as the end of the first transverse line (21) is spaced apart from the edge (11) of the cutting guide hole (10), a non-porous surface of a certain area can be formed between the end of the first transverse line (21) and the cutting guide hole (10).

If the end of the first transverse line (21) is directly connected to the edge (11) of the cut-in-guiding hole (10), when the first transverse line (21) is cut, this cut is directly guided to the cut-in-guiding hole (10), so that the label (1) at the point of the cut-in-guiding hole (10) can be segmented with a small force and movement.

On the other hand, if the end of the first transverse line (21) is spaced a certain distance from the edge (11) of the cutting guide hole (10), the cutting generated based on the first transverse line (21) receives a certain resistance from the non-porous surface, so that the label (1) can be prevented from being completely divided into the upper side (1a) and the lower side (1b) by the non-porous surface to some extent. Even if there is such resistance by the non-porous surface, it goes without saying that the label (1) can be divided if a torsional moment due to the rotational separation of the lid (2a) is strongly applied to the label (1).

The incision guide line (20) may include a second transverse line (22) extending laterally at a point spaced a certain distance above and below the first transverse line (21).

At this time, if the first transverse line (21) is a solid line, the second transverse line (22) may be a dotted line, and if the first transverse line (21) is a dotted line, the second transverse line (22) may be configured as a solid line. In some cases, both the first transverse line (21) and the second transverse line (22) may be configured as dotted lines or solid lines. This second transverse line (22) may play an auxiliary role of the first transverse line (21) for inducing cutting. The end of the second transverse line (22) may be connected to the edge (11) of the incision-inducing hole (10), or may be spaced apart from the edge (11) of the incision-inducing hole (10) by a certain distance.

The first transverse line (21) is connected to the edge (11) of the cutting guide hole (10), and the second transverse line (22) can be spaced a certain distance from the edge (11) of the cutting guide hole (10).

The incision guide line (20) may further include a first longitudinal line (23) extending longitudinally across the central portion of the lid (2a) from an upper point of the edge (11) of the incision guide hole (10).

The first longitudinal line (23) can induce re-segmentation of the upper side (1a) of the label (1) wrapped around the outer surface of the rotationally separated lid (2a).

That is, when the lid (2a) is separated, the label (1) upper side (1a) configuration is attached to the lid (2a), and at this time, when the upper side (1a) configuration is re-segmented based on the first longitudinal line (23), the label (1) covering the lid (2a) is divided equally into left and right sides and can be easily removed from the lid (2a).

The first longitudinal line (23) may be made entirely of dotted or solid lines, or may be made of dotted and solid lines alternating over a certain section.

The end of the first longitudinal line (23) is connected to the edge (11) of the cutting guide hole (10) or the first transverse line (21), or is spaced apart from the edge (11) of the cutting guide hole (10) or the first transverse line (21) by a predetermined distance, and as the end of the first longitudinal line (23) is spaced apart from the edge (11) of the cutting guide hole (10) or the first transverse line (21), a non-porous surface of a predetermined area can be formed between the end of the first longitudinal line (23) and the cutting guide hole (10) or the first transverse line (21).

In some cases, the first longitudinal line (23) may be formed independently without the first transverse line (21), and in this case, a plurality of first longitudinal lines (23) may be formed at a set interval along the transverse direction of the label (1).

Meanwhile, a notch (12) in the shape of a triangle is formed on the edge (11) of the incision-inducing hole (10) toward the label (1) to induce incision of the label (1).

At this time, the notches (12) can be provided as a pair on the left and right sides at the left and right edges (11) of the cutting guide hole (10) so as to be symmetrical on the left and right sides, and each of the notches (12) can be formed on the same line.

When the lid (2a) is rotated and separated, the cutting of the label (1) is induced from at least one of the apex points of the notch (12), so that the segmentation of the label (1) can be easily induced based on the cutting guide hole (10).

The above notch (12) is formed in a sunken shape at the edge (11) of the cut-in-guiding hole (10), unlike the aforementioned cut-in-guiding line (20), so that it is easy for the user to identify, and thus, the label (1) can be cut based on the notch (12) portion without separately opening the lid (2a), if necessary.

The notch (12) can be formed at a height on the same line as the bottom of the lid (2a), similar to the first horizontal line (21).

It is disclosed that the means such as the first transverse line (21), the second transverse line (22), the first vertical line (23), and the notch (12) that help in cutting the label (1) can be configured selectively or can be appropriately modified into a structure that appropriately combines and uses all of them.

In summary, the above-mentioned cutting guide hole (10) not only provides convenience of cutting when cutting the initial label (1) by rotating the lid (2a), but also provides convenience of easily removing the lower (1b) side configuration from the body (2b) later when the lower (1b) side configuration of the label (1) is maintained on the body (2b) for a certain period of time without being removed from the body (2b) according to the rotating operation of the lid (2a).

The embodiments of the present invention described above are merely exemplary, and those skilled in the art will readily appreciate that various modifications and equivalent other embodiments are possible from the embodiments. Therefore, it will be readily understood that the present invention is not limited to the forms mentioned in the detailed description above. Accordingly, the true technical protection scope of the present invention should be determined by the technical idea of the appended claims. In addition, the present invention should be understood to include all modifications, equivalents, and substitutes within the spirit and scope of the present invention defined by the appended claims.

1: Label paper
10: Incision guide hole
20: Incision guide line

Claims (5)

In a label paper that is applied to the outside of a PET bottle and is heat-shrinkable in the transverse direction to adhere to the PET bottle,
It is formed into a cylindrical structure to wrap around the PET bottle from all sides, and when heat-shrinking, the upper part is formed to extend to the upper edge of the PET bottle cap, and the lower part is formed to extend to the lower edge of the PET bottle body, so that it is formed to closely adhere to the PET bottle.
A cut-in hole is formed through a certain area to expose the side of the PET bottle.
The top of the above incision guide hole is aligned with the bottom of the lid or is located at a specific point within the section between the bottom and top of the lid,
The above incision guide hole is formed in a long oval shape from top to bottom.
A PET bottle label, characterized in that a cutting guide line is formed around the upper portion of a cutting guide hole so that cutting is guided toward the edge of the cutting guide hole according to rotational separation of the PET bottle cap. delete delete delete delete