KR20230123904A - Lid packaging paper for drink container - Google Patents

Abstract

The lid wrapper for a drinking container according to embodiments of the present invention includes a lid wrapper coupled to an upper flange of the drinking container to seal the inside of the drinking container, and the lid wrapper is adhered to the upper flange and includes a starting point, an opening, and The straw insertion part is composed of an inner layer formed by an incision line and an outer layer attached to the upper surface of the inner layer and laminated in a plurality of layers, and when removing the lead wrapping paper so that the outer layer is separated from the inner layer, it is cut along the incision line The opening is open with a portion of the inner layer attached to the lower surface of the outer layer.

Description

Lid packaging for drinking containers {LID PACKAGING PAPER FOR DRINK CONTAINER}

It relates to a lid wrapper for a drinking container according to the present invention.

Lid wrappers for drinking containers play an important role in food sales as they are used to store beverages so that they do not spoil and to improve marketing. Therefore, in order to maintain the freshness and preservation of beverages, the lid wrapping paper must have excellent gas and moisture barrier properties as well as excellent visual properties.

On the other hand, in the conventional lid packaging for drinking containers, a plurality of films including films formed of metals such as aluminum having excellent gas blocking performance are stacked in order to maintain the freshness of food by generally blocking gas flowing into the drinking container. is formed In addition, the lid wrapper has a structure that is thermally bonded to the drinking container, and is designed so that the consumer can drink it using a straw located on the side without removing the protective cap on the top when drinking.

For this reason, the product after drinking is thrown away with the lead wrapping paper attached to the drinking container, and recycling is difficult. In addition, it is difficult to recycle multi-layer film wrapping paper composed of heterogeneous materials including metal materials such as aluminum, and even if recycled, it is difficult to prevent the discharge of substances harmful to the environment.

Furthermore, recently, in order to improve the ease of recycling, regulatory authorities have taken regulatory measures against environmental pollution, requiring that the drinking container and the lead packaging be made of a single material, or the lead packaging is manufactured by changing the material so that consumers can easily remove the lead packaging from the drinking container. is implementing

In order to implement the regulatory measures, if the drinking container and the lead packaging are to be manufactured with a single material, there is a difficulty in that additional technology development is required, such as the essential change of existing facilities for manufacturing the lead packaging.

Republic of Korea Patent Registration No. 10-2073289 (drink container)

In order to solve the above problems, the present invention manufactures a lead wrapping paper in which the inner layer and the outer layer are separated, the outer layer can be separated from the inner layer and completely removed, and the opening formed in the inner layer when the outer layer is removed. And the straw insertion portion is opened to provide a lid packaging for a drinking container that can be directly consumed through an opening or use a straw when necessary.

The lid wrapper for a drinking container according to embodiments of the present invention includes a lid wrapper coupled to an upper flange of the drinking container to seal the inside of the drinking container, and the lid wrapper is adhered to the upper flange and includes a starting point, an opening, and The straw insertion part is composed of an inner layer formed by an incision line and an outer layer attached to the upper surface of the inner layer and laminated in a plurality of layers, and when removing the lead wrapping paper so that the outer layer is separated from the inner layer, it is cut along the incision line The opening is opened while a part of the inner layer is attached to the lower surface of the outer layer, and in the inner layer, an opening in the form of a droplet is formed adjacent to the starting point where the outer layer is separated, and the opening and the opening are formed on a straight line crossing the opening. The straw insert is formed at a position adjacent to the farthest point, and the inner layer has no other opening between the opening and the straw insert, and the straw insert has a circular edge, protruding from the edge toward the center point. It includes a plurality of hooking parts, and the hooking part is formed in an arc shape toward the center point within each right angle range divided into four based on the center point of the circle, and the arc of the hooking part is a virtual space spaced apart from the edge at a predetermined interval inward. It is formed so as to come into contact with the circular shape, and the engaging part is to hold the movement of the straw.

The inner layer is a polypropylene (PP)-based resin film including cast polypropylene (CPP) or oriented polypropylene (OPP).

The outer layer includes a first layer formed of a polyethylene (PE: PolyethylEne)-based resin film located on the upper surface of the inner layer, and a third layer formed of a thin aluminum plate stacked on top of the first layer.

The outer layer may further include a second layer laminated between the first layer and the third layer and formed of a polyethylene terephthalate (PET)-based resin film.

The lead wrapper is formed by cutting the opening and the straw insert, and during the cutting, the inner layer is penetrated so that the opening and the straw insert are formed on the lead wrapper, and the first layer of the outer layer is less than half of the thickness is incised with

The separation strength of the outer layer and the inner layer is 1~6N/15mm.

According to the solution to the problem of the present invention described above, the lid packaging for a drinking container according to the present invention can easily remove the outer layer of the multi-layer structure composed of heterogeneous materials from the inner layer composed of a single material, so that the drinking container can be recycled. can improve

In addition, when the lead wrapping paper is removed, the outer layer may be separated from the inner layer and the opening may be simultaneously opened along the incision line cut in half on a portion of the inner layer and the outer layer.

In addition, the outer layer is completely separated from the inner layer in order to expose the straw insert to the outside when the user wants to use the straw through the straw insert formed with the incision line facing the opening formed in the inner layer. It works.

1 is a longitudinal cross-sectional view showing a lead wrapper for a drinking container according to an embodiment of the present invention.
Figure 2 is a perspective view showing a lead wrapping paper composed of an inner layer and an outer layer according to an embodiment of the present invention.
Figure 3 is a perspective view for explaining a form in which the outer layer is separated from the inner layer when using the lid wrapper for a drinking container according to an embodiment of the present invention.
Figure 4 is a cross-sectional view for explaining the laminated structure of the lead wrapping paper according to an embodiment of the present invention.
Figure 5 is a plan view showing various embodiments of the straw insert formed in the inner layer according to an embodiment of the present invention.
Figure 6 is an enlarged view to explain the shape of the hooking portion of the straw insertion portion shown in Figure 5;

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice it. However, the present invention may be embodied in many different forms and is not limited to the embodiments set forth herein. And, in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case of being "directly connected" but also the case of being "electrically connected" with another element in between. . In addition, when a part "includes" a certain component, it means that it may further include other components without excluding other components unless otherwise stated.

1 is a longitudinal cross-sectional view showing a lead wrapper for a drinking container according to an embodiment of the present invention.

1, the lid wrapper for drinking container according to an embodiment of the present invention is coupled to the upper flange of the drinking container 2, and includes a lid wrapping paper 1 for sealing the inside of the drinking container 2, , The lead wrapping paper 1 is adhered to the upper flange and attached to the upper surface of the inner layer 20 and the inner layer 20 where the starting point, the opening 210 and the straw insert are formed as incision lines and are laminated in a plurality of layers It is composed of the outer layer 10, and when the lead wrapping paper 1 is removed so that the outer layer 10 is separated from the inner layer 20, a portion 210a of the inner layer 20 cut along the incision line The opening 210 is opened in a state attached to the lower surface of the outer layer 10 .

Therefore, when the user applies a predetermined force to the outer layer 10 when the lead wrapping paper 1 is removed, the outer layer 10 ) is separated from the inner layer 20 and at the same time the opening 210 may be opened. Accordingly, the user can directly drink a beverage through the opening 210 formed in the inner layer 20 when drinking, and may use the straw through the straw insertion portion if necessary.

Hereinafter, a lid packaging for a drinking container according to an embodiment of the present invention will be described in more detail.

Figure 2 is a perspective view showing a lead wrapping paper composed of an inner layer and an outer layer according to an embodiment of the present invention. Figure 3 is a perspective view for explaining a form in which the outer layer is separated from the inner layer when using the lid wrapper for a drinking container according to an embodiment of the present invention. Figure 4 is a cross-sectional view for explaining the laminated structure of the lead wrapping paper according to an embodiment of the present invention.

Referring to FIGS. 2 and 3, the lead wrapper 1 has a starting point, an opening 210, and a straw insert 220 formed as cut lines, and attached to the upper surface of the inner layer 20 and the inner layer 20 and consists of an outer layer 10 stacked in a plurality of layers.

Referring to FIG. 4 , the lead wrapping paper 1 includes an inner layer 20 made of a single material and an outer layer 10 made of a plurality of layers of different materials.

Specifically, the inner layer 20 may include a polypropylene (PP)-based resin film including cast polypropylene (CPP) or oriented polypropylene (OPP).

In this way, the inner layer 20 may be formed of a single polypropylene-based material. Polypropylene is characterized by being strong and easy to recycle. For example, non-stretched polypropylene-based resin is a polypropylene-based resin produced without going through a stretching process, and has excellent transparency and moisture resistance, high surface hardness, and excellent heat sealability compared to stretched polypropylene-based films. there is. Therefore, the non-stretched polypropylene-based resin film is placed on the lowest layer of the wrapping paper and heat-treated in a state of being interviewed on the packaging object, so that it can serve to adhere the packaging object and the wrapping paper. In addition, the stretched polypropylene-based resin has excellent transparency, moisture resistance, surface gloss, low specific gravity, and excellent mechanical strength such as tensile strength and impact strength compared to non-stretched polypropylene.

For example, referring to FIG. 4(a) , the outer layer 10 may include a first layer 110, a second layer 120, and a third layer 130. At this time, the first layer 110 is laminated on the upper surface of the inner layer 20 and may be formed of a polyethylene (PE: PolyethylEne)-based resin film. In addition, the third layer 130 is laminated on the upper surface of the second layer 120 and may be formed of a thin aluminum plate. The second layer 120 is laminated between the first layer 110 and the third layer 130 and may be formed of a polyethylene terephthalate (PET)-based resin film. At this time, the second layer 120 serves to protect the third layer 130 formed of aluminum. For example, when the second layer 120 cuts the starting point, the opening 210, and the straw insert 220 in the lead wrapping paper 1 in which the inner layer 20 and the outer layer 10 are laminated, It is possible to prevent defects that may occur due to lack of accuracy of equipment.

As another example, referring to FIG. 4(b), the outer layer 10 is located on the upper surface of the inner layer 20 and is laminated on the first layer 110 formed of a polyethylene-based resin film and the upper surface of the first layer 110. And may be composed of a third layer 130 formed of a thin plate of aluminum material. In this case, the outer layer 10 shown in FIG. 4(b) may omit the second layer 120 protecting aluminum shown in FIG. 4(a). For example, the cutting machine used to form the starting point, the opening 210 and the straw insert 220 in the lead wrapping paper 1 in which the inner layer 20 and the outer layer 10 are laminated is micron unit When the precision is high so as to be controlled by , a simple structure of the outer layer 10 in which the second layer 120 is omitted may be used.

Here, the cutting process is the first of the inner layer 20 and the outer layer 10 among the outer layer 10 formed of the inner layer 20 and the first layer 110 to the third layer 130 laminated thereon. It means that only about half the thickness of the first layer 110 is cut out. By doing this, due to the strength of the adhesion between the inner layer 20 and the outer layer 10 when the outer layer 10 is separated, the inner layer partitioned by the opening 210 or the straw insert 220 of the inner layer 20 Part (210a) of (20) is separated in a state attached to the lower surface of the outer layer 10, the opening 210 or the straw insertion portion 220 may be opened.

In the lead wrapping paper 1, the opening 210 and the straw insertion portion 220 are formed by cutting, and during the cutting, the opening 210 and the straw insertion portion 220 form the lead wrapping paper 1 The inner layer 20 is penetrated so as to be formed in, and the first layer 110 of the outer layer 10 may be cut to less than half of the thickness.

For example, the thickness of the third layer 130 is 30 to 50 μm, the thickness of the second layer 120 is 12 to 24 μm, the thickness of the first layer 110 is 15 to 30 μm, and the inner The layer 20 may have a thickness of 30 to 60 μm. For example, referring to FIG. 4, when the thickness of the inner layer 20 is 30 μm and the thickness of the first layer 110 is 15 μm, the cutting depth 23 is in the range of 30.5 to 37.5 μm. It can be.

Illustratively, in the case of manufacturing the lead wrapping paper 1 shown in FIG. 4 (a), after laminating and laminating the third layer 130 on top of the second layer 120 by dry dry, the second layer ( 120) and the third layer 130 may be formed between the outer layer 10 and the inner layer 20 through a T-die extrusion process to form the first layer 110. On the other hand, in the case of manufacturing the lead wrapping paper 1 shown in FIG. 4 (b), the first layer 110 is extruded between the third layer 130 and the inner layer 20 in the same manner as the inner layer 20, The lead wrapping paper 1 in which the first layer 110 and the third layer 130 are sequentially stacked may be formed. In this case, dry lamination may be a method in which an adhesive dissolved in an organic solvent is applied to a film, dried in a dryer, and then bonded to another substrate.

Here, the first layer 110 is formed to a constant thickness between the second layer 120 and the inner layer 20, and serves as an adhesive layer between the outer layer 10 and the inner layer 20. In such an adhesive layer, the adhesive strength between the second layer 120 and the first layer 110 may be greater than that between the first layer 110 and the inner layer 20 . To this end, an anchor coating operation may be performed between the first layer 110 and the second layer 120 so that the first layer 110 is more strongly bonded to the second layer 120 than the inner layer 20. can

In addition, the first layer 110 and the inner layer 20 may be treated to maintain adhesive strength at a level capable of separation with a certain force.

Illustratively, the separation strength between the outer layer 10 and the inner layer 20 may be formed within a range of 1 to 6 N/15 mm. That is, when the user applies a predetermined force to the outer layer 10, the range of 2/15 to 18/15 N/mm maintained between the first layer 110 and the inner layer 20 of the outer layer 10 It exceeds the adhesion strength of, and can easily separate the outer layer (10).

That is, it is very important that the first layer 110 and the inner layer 20 maintain an appropriate level of adhesive strength. If it is attached with too strong force, a problem arises in that it is difficult for the consumer to remove the outer layer 10 during drinking. In addition, if it is too weakly attached, even if a weak external force is applied, the contents leak out as the outer layer 10 is separated, or the inner layer 20 and the inner layer 20 in the packaging process of thermally bonding the lead wrapping paper 1 to the drinking container 2 Separation of the outer layer 10 may cause defective products to be manufactured.

Referring back to FIG. 3 , the inner layer 20 has an opening 210 in the form of a droplet formed at a location adjacent to the starting point at which the outer layer 10 is separated, and the opening 210 is formed on a straight line crossing the opening 210. Straw insertion portion 220 may be formed at a position adjacent to the farthest point from the distance.

For example, the opening 210 may be formed at a position secured at a distance of 1 to 5 mm from the boundary surface of the inner circumferential surface of the drinking container 2 . Accordingly, when drinking with the mouth open through the opening 210, when the drinking container 2 is tilted, a slight chin is secured to prevent the contents from suddenly pouring out. In addition, it is possible to prevent waste of undrinkable contents accumulated in the chin due to the width of the chin being formed too wide.

In addition, the starting point plays a role of demarcating the handle portion protruding outward of the drinking container 2 from the lid wrapper 1. At this time, the starting point may be formed at a position spaced 0.3 to 0.7 mm from the interface thermally bonded to the flange of the drinking container 2, and may be formed in a perforated line shape, preferably at a position spaced 0.5 mm apart. Referring to FIG. 5 to be described later, the starting point 21 may be formed in a straight line or a curve so as to border the handle portion of the lead wrapper 1.

That is, as shown in FIG. 3, when the user pulls the handle part of the lead wrapper 1, the outer layer 10 is separated from the inner layer 20 along the perforated line of the starting point 21, and at the same time, the opening 210 and The straw insertion portion 220 may be opened.

Figure 5 is a plan view showing various embodiments of the straw insert formed in the inner layer according to an embodiment of the present invention. Figure 6 is an enlarged view to explain the shape of the hooking portion of the straw insertion portion shown in Figure 5;

Specifically, as shown in FIGS. 5(a) and 5(b), the straw insert 220 may be formed in a semicircular or cross-shaped perforated line. That is, the straw insert 220 may be formed in the inner layer 20 in a straight or curved state along the perforated line. Due to this, unlike the opening 210, there is no part that is adhered to the lower surface of the outer layer 10 and removed from the inner layer 20, and the user can use the straw by inserting it into the cracks of the straw insertion parts 220a and 220b. can

In addition, as shown in FIGS. 5(c) and 6, the straw insertion part 220 may include a plurality of hooking parts 22c protruding from the rim toward the center point while the rim is formed in a circular shape.

For example, referring to FIG. 6(a) , the hooking portion 22c may be formed in an arc shape toward the center point within each right angle range divided into four based on the center point of the circle. At this time, as shown in FIG. 6(b), the arc of the hooking portion 22c may be formed so as to come into contact with an imaginary circle spaced at a predetermined distance a from the rim inward. For example, it is preferable that the distance (a) between the circle frame and the virtual circle is formed to be around 1 mm.

In this way, in the case of the straw insertion portion 220c including the hooking portion 22c shown in FIGS. 5 (c) and 6, like the opening 210, the inner layer 20 corresponding to the straw insertion portion 220c It may be completely removed from the inner layer 20 with a portion attached to the lower surface of the outer layer 10 . Accordingly, the user can drink a beverage by inserting the straw into the straw insertion portion 220c opened in the inner layer 20, and the hanging portion 22c may serve to hold the movement of the straw to some extent.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

1: lid wrapper for drinking container
10: outer layer
110: first layer
120: second layer
130: 3rd layer
20: inner layer
210: opening
220: straw insert

Claims (6)

In the lid packaging for drinking containers,
A lid wrapper coupled to the upper flange of the drinking container to seal the inside of the drinking container,
The lead wrapping paper is composed of an inner layer adhered to the upper flange and having a starting point, an opening, and a straw insert formed as an incision line, and an outer layer attached to the upper surface of the inner layer and stacked in a plurality of layers,
When the lead wrapping paper is removed so that the outer layer is separated from the inner layer, the opening is opened while a part of the inner layer cut along the incision line is attached to the lower surface of the outer layer,
In the inner layer, the water droplet-shaped opening is formed at a position adjacent to the starting point from which the outer layer is separated, and the straw insert is formed at a position adjacent to a point farthest from the opening on a straight line crossing the opening. will be,
The inner layer has no other opening between the opening and the straw insert,
The straw insertion part is formed with a circular edge and includes a plurality of hooking parts protruding from the edge toward the center point,
The hooking portion is formed in an arc shape toward the center point within each right angle range divided into four based on the center point of the circle,
The arc of the hooking part is formed so as to come into contact with a virtual circle spaced at a predetermined interval inward from the rim,
The clasp is to hold the movement of the straw, the lid wrapping paper for drinking containers.
According to claim 1,
The inner layer is a polypropylene (PP: polypropylene)-based resin film containing non-oriented polypropylene (CPP: cast polypropylene) or oriented polypropylene (OPP).
According to claim 1,
The outer layer includes a first layer formed of a polyethylene (PE: PolyethylEne)-based resin film located on the upper surface of the inner layer, and a third layer formed of a thin plate made of aluminum laminated on top of the first layer. Lead packaging for phosphorus and drinking containers.
According to claim 3,
The outer layer is laminated between the first layer and the third layer and further comprises a second layer formed of a polyethylene terephthalate (PET)-based resin film.
According to claim 3,
The lead wrapper is formed with the opening and the straw insertion portion by half-knife processing,
During the cutting process, the inner layer is penetrated so that the opening and the straw insert are formed in the lead wrapper, and the first layer of the outer layer is cut to less than half of the thickness.
According to claim 1,
The separation strength of the outer layer and the inner layer is 1 ~ 6N / 15mm, the lead packaging for drinking containers.

Images