KR100799064B1 - Pouch having easy-tear pin hole part and method for producing the same - Google Patents

Abstract

In the present invention, in the normal pouch, a pin hole penetrating through the film of the pouch so as to extend to one side of the sealing portion of the pouch or from one side of the sealing portion to the inner side of the pouch, the upper and lower cross-sections. The plurality of pin holes are formed by being punched by different punches, and the plurality of pin holes are spaced apart from each other at a distance sufficient to provide easy tearing property. It provides a pouch and a manufacturing method thereof. According to the present invention to form a pin hole that can naturally discharge the gas that can be generated from the inside of the pouch, there is no external discharge of the contents through the pin hole, and further lower the product defects, such as pouch burst or contents leak, In particular, it is possible to secure the easy tearing at the same time to form a pin hole, the manufacturing cost is very low.

Pouches, Easy Tear, Pin Holes, Punching, Powder, Drain, Notches

Description

Pouch having easy tear pin hole part and manufacturing method thereof {Pouch having easy-tear pin hole part and method for producing the same}

* Description of Major Reference Marks *

1 is a schematic diagram illustrating a pouch according to one embodiment of the present invention.

2 is a schematic view showing a pouch according to another embodiment of the present invention.

3 is a schematic view showing a pouch according to another embodiment of the present invention.

4 is an enlarged schematic view of the pinhole part of the pouch of FIGS. 1 to 3.

* Description of Major Reference Marks *

10 pouch 11: top seal part

12: sealing part 13: notch

20: pin hole part 21: sealing part side pin hole part

21a, 21b: portion to be cut to form notches

22: pouch inner pin hole part 25: each pin hole

27: PET film 28: NY film

29: LLDPE film S: sealing

The present invention relates to a pouch having an easily tearable pin hole portion and a manufacturing method thereof.

In the present specification, punching means a punching process by punches having different areas of the upper and lower end faces, for example, such as an awl-shaped punch.

Pouches for packaging or refilling of the contents shall be easy to tear during opening or refilling.

Conventionally, techniques using a laser or a sewing scale or score are known to impart easy tearing to a pouch.

The method of using such a laser is to provide easy tearing by melting the film layer of the pouch using a laser, for example in a slitter process. However, the method of melting the film layer by the laser has a problem that the degree of melting is not uniform and the risk of failure is high. Moreover, the method of using a sewing scale and a score also has the problem of the leakage of the pouch contents, or the fall of the drop strength after the contents filling.

In addition to the above methods, a method of imparting easy tear property to the film itself by using a functional resin having good tear property in film extrusion is known. However, the method using the functional resin has a problem in that the manufacturing cost is high and the peel strength is inferior as compared to the existing product.

Therefore, in addition to the method of imparting easy tearing using a conventional laser, sewing scale or score, or using an expensive resin that can be easily teared, there is no risk of defects and the manufacturing cost is easy and the manufacturing is easy A gender grant method is required.

On the other hand, when the contents in the pouch are powder, the pouch may swell due to the natural decomposition of hydrogen peroxide from the powder to oxygen. In order to prevent this phenomenon, the inside of the pouch is formed by forming a pin hole in the front or back of the pouch. It is also possible to use the method of discharging the oil (see Korean Utility Model Registration No. 322700).

However, in the conventional method of forming the pinholes, even if the size of the pinholes is formed to a size through which the powder detergent does not pass, the powder particles themselves have to be difficult to be substantially discharged from the pinholes depending on the use state of the pouch. Moreover, the pinhole formed by the conventional method also has the problem that it is easy to cause the pouch to burst.

Therefore, the present invention is to solve the above problems, an object of the present invention is to form a pin hole that can naturally discharge the gas that can be generated from the inside of the pouch, there is no external discharge of the contents through the pin hole, In addition, it is possible to reduce product defects such as pouch bursting and leakage of contents. In particular, a pouch having an easily tearable pinhole portion, in which a pinhole is formed and an easy tearing property can be secured at the same time, resulting in a very low manufacturing cost. And a method for producing the same.

In order to achieve the above object, in the present invention, in the conventional pouch, penetrates through the film of the pouch so as to extend to one side of the sealing portion of the pouch or from one side of the sealing portion to the inner side of the pouch. A plurality of pin holes are formed, and the plurality of pin holes provide a pouch having an easily tearable pin hole part, wherein the plurality of pin holes are spaced apart from each other at a distance sufficient to provide easy tearing property.

In the present invention, the pouch is preferably formed with a notch in the sealing portion, the pin hole is formed by connecting to the notch.

In the present invention, the pouch is preferably a distance of 2.0 to 3.0mm of the portion where the punching is not formed between the pin hole and the pin hole.

In the present invention, it is preferable that the cross-sectional area of the pin hole is changed from the inside of the pouch to the outside so as to prevent leakage of the contents.

In the present invention, it is preferable that the cross-sectional area is gradually reduced or increased.

In the present invention, it is preferable that the cross section of the pinhole is circular and the largest diameter of the circular cross section is 1.0 to 1.5 mm.

In order to achieve the above object, in the present invention, in the manufacturing method of the conventional pouch, after sealing the front and rear film of the pouch in the sealing position, on one side of the sealing portion, or one of the sealing portion A plurality of pin holes penetrating through the film of the pouch so as to extend from the side to the inner portion of the pouch by punching with a punch having a different upper and lower cross-sectional diameter, the plurality of pin holes to provide easy tearing property Provided is a method of manufacturing a pouch having an easily tearable pin hole portion, which is formed to be spaced apart from each other at a distance that may be sufficient.

In the present invention, it is preferable to form a notch in the sealing portion of the pouch and to connect the notch to form a pin hole.

In the present invention, it is preferable that the distance of the portion where the punching is not formed between the pin hole and the pin hole is 2.0 to 3.0 mm.

In the present invention, it is preferable to change the cross-sectional area of the pin hole from the inside of the pouch to the outside so as to prevent the leakage of the contents.

In the present invention, the cross-sectional area is preferably to be gradually reduced or increased.

In the present invention, it is preferable that the cross section of the pinhole is circular and the largest diameter of the circular cross section is 1.0 to 1.5 mm.

Hereinafter, the pouch provided with the easily tearable pinhole part which concerns on this invention, and its manufacturing method are explained in full detail.

1 is a schematic diagram showing a pouch according to an embodiment of the present invention, Figure 2 is a schematic diagram showing a pouch according to another embodiment of the present invention, Figure 3 shows a pouch according to another embodiment of the present invention It is a schematic diagram, and FIG. 4 is a schematic diagram which expands and shows the pinhole part of the pouch of FIGS.

1 and 2, the pouch 10 is formed with a sealing portion 12 for sealing the front and rear film, the top seal portion 11 is formed on the top.

In the present invention, the pin hole portion 20 is formed from the sealing portion 12, and more preferably, the pin hole portion 21 is formed from the notch 13 of the sealing portion 12. On the other hand, the pin hole portion 22 may be formed to extend to the inner portion of the pouch or the inner portion of the top seal portion 11 inside the sealing portion 12.

Meanwhile, as illustrated in FIG. 3, the pouch 10 may be formed to have an injection hole shape narrowing at an upper portion thereof, and in this case, the pin hole portion 21 may be formed from the notch 13 of the sealing portion 12. The pin hole portion 22 may be formed to extend to the inner portion of the pouch inside the sealing portion 12.

Referring to FIG. 4, the pouch front and rear films to be bonded have a configuration in which PET films 27, nylon films 28, and LLDPE films 29 are laminated, respectively. 4 shows that punching is performed by an awl-type punch in which the areas of the upper and lower sections are respectively different in the three-ply film, but it is possible to use two-ply or four-ply film, and in this case, the thickness of each lamination is varied. It is also possible. For example, two layers of OPP film (20 micrometers) / LLDPE film (100-200 micrometers), two layers of PET film (12 micrometers) / LLDPE film (100-200 micrometers), NY film (15 micrometers) / LLDPE film ( 2 layers of 100-200 μm), PET film (12 μm) / NY film (15 μm) / LLDPE 3 layers of film (100-200 μm), PET film (12 μm) / AL layer (7 μm) / LLDPE 3 layers of film (100-200 μm), 4 layers of PET film (12 μm) / NY film (15 μm) / AL layer (7 μm) / LLDPE film (100-200 μm), etc. Punching may be performed by punches having different areas of the lower end surface to form pin holes. The front and back films of this configuration are sealed (S) at the sealing portion, and some of the sealing portions 21a, 21b are cut to form the notches.

As described above, each pin hole 25 of the pin hole portion 20 is formed by punching with a punch having different areas of the upper and lower cross sections, and the width of the cross section penetrating the bonded film but passing through the bonded film. Is formed to change. For example, the width of the cross section is formed to gradually decrease (or increase depending on the viewing position; the same as below). By decreasing the width of the cross section, leakage of contents is effectively prevented as compared with the case where the cross section is constant. . In addition, the pin hole 25 may alternately use a pin hole having a reduced cross-sectional area, an increasing pin hole, and a decreasing pin hole.

When the pin hole 25 is formed by punching as described above, the cross section of the pin hole 25 may have various shapes such as a circle or an oval. For example, when the cross section of the pin hole 25 is a circle, a circle The width of the cross section allows the diameter of the largest portion to be 1.0 to 1.5 mm as shown in FIG. When the diameter exceeds 1.5 mm, even if the cross-sectional diameter is reduced, there is a fear that leakage of the contents (particularly powder having a particle size of 60 to 200 mesh) in particular. In addition, when the diameter is less than 1.0mm, rather than the gas discharge is not smooth, the swelling phenomenon may occur, and furthermore, due to the friction between the punching machine and the pouch, the punching machine does not escape well from the pouch, the machine is stopped, etc. Problems may arise.

On the other hand, when the pin hole portion 20 is formed in the present invention, the pin hole portion 20 takes a unique structure such that easy tearing is provided. According to the configuration of the present invention as described above, it is possible to provide easy tearing easily and inexpensively while basically eliminating the need for using a laser or using a functional resin. In the present invention, the punching is performed by spaced apart from each other by a distance such that the pin holes 25 can be easily torn in order to provide easy tearing property. However, in the case of making the pinhole 25 too narrow in order to provide easy tearing property, the pinhole portion 20 drops the strength of the pouch due to the property that the pinhole penetrates the film. May cause a burst at that site.

Therefore, in the case where the pin hole portions 20 are formed at a predetermined distance by punching, it is necessary to adjust the distance between the pin holes 25 at an appropriate interval, and such a distance (the pin holes are not formed by punching). 2.0 to 3.0 mm is preferable as the distance of the part). In the case of exceeding 3 mm, the tearing property is easily degraded, and in the case of less than 2 mm, a burst may occur at the corresponding part when the pouch falls.

The manufacturing procedure of the pouch is as follows.

First, after providing each film to be the front and rear of the pouch, the front and rear films are opposed to each other and sealed at the necessary sealing portions such as upper, lower and side portions thereof. Then, using a cooler to cool the pouch forming well while lowering the temperature of the sealed portion. If the pouch is a stand type pouch, the bottom film is provided to seal the front, back and bottom, respectively.

Subsequently, as described above, punching is preferably performed to reduce the cross-sectional area of the pin hole from the notched region of the sealing portion. At this time, the punching is preferably carried out from the rear side of the pouch toward the front side in terms of process efficiency. Finally, remove side or other protrusions to meet product specifications.

Hereinafter, the present invention will be described in more detail by explaining preferred examples and experimental examples of the present invention. However, the present invention is not limited to the following examples, and various forms of embodiments can be implemented within the scope of the appended claims, and the following examples are only ordinary in the art while making the disclosure of the present invention complete. It is intended to facilitate the implementation of the invention to those with knowledge.

EXAMPLE

The film structure was made into outermost PET film (12 micrometers) / middle layer NY film (15 micrometers) / innermost layer LLDPE film (150 micrometers), and the stand type pouch was produced. A notch was formed in the sealing portion of the pouch and a pinhole was formed from the notched region to the top seal portion. The prepared pouch was filled with 60 to 200 mesh detergent powder.

Table 1 below shows the punched pin hole size and the spacing between the pin holes in each embodiment.

Punched pin hole size (largest circular cross section diameter; mm) Punched Pin Hole Spacing (mm) Example 1 1.5 3 Example 2 1.0 2 Example 3 2 4 Example 4 0.5 One

[Experiment]

The following experiments were carried out for each pouch of the prepared example.

Drop test and measurement of contents leak

Each pouch filled with detergent powder was dropped freely 10 times at 2M height.

The drop results were expressed as follows; (Circle): none of them explode, 1: 1-2 bursts, Χ: three or more bursts.

The results for the contents leakage phenomenon after dropping are expressed as follows; Χ: Contents do not leak, ○: Contents leak.

Swelling measurement

Pouches filled with detergent powder were stored at room temperature for 60 days, and swelling was measured.

The results for swelling were expressed as follows; Χ: Do not swell, ○: Swell.

Dragon Tearability  Measure

Each prepared pouch was opened ten times to assess easy tearing.

The evaluation results were expressed as follows; (Circle): Torn off easily without a desired tear part, ㅿ: 1-2 pieces deviate from a desired part, Χ: Three or more things do not detach from a desired part and are not easily opened.

Table 2 shows the results of the drop test, the contents leakage phenomenon, the swelling phenomenon, and the easy tearing measurement, respectively.

Drop test Content leak phenomenon Swelling phenomenon Easy tearing Example 1 ○ (0/10) Χ Χ ○ (10/10) Example 2 ○ (0/10) Χ Χ ○ (10/10) Example 3 ㅿ (1/10) ○ Χ ㅿ (8/10) Example 4 Χ (3/10) Χ ○ ㅿ (9/10)

As can be seen from Table 2, in particular, the case of Examples 1 and 2 showed satisfactory results in the drop test, the content leakage measurement, the swelling phenomenon measurement. Furthermore, also in easy tearing property, Examples 1 and 2 could easily confirm that the desired tearing part was easily torn off.

According to the present invention to form a pin hole that can naturally discharge the gas that can be generated from the inside of the pouch, there is no external discharge of the contents through the pin hole, and further lower the product defects, such as pouch burst or contents leak, In particular, it is possible to secure the easy tearing at the same time to form a pin hole, the manufacturing cost is very low.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will cover such modifications and variations as fall within the spirit of the invention.

Claims (12)

In the pouch, A plurality of pin holes penetrating the front and rear film of the pouch is formed on one side of the sealing portion of the pouch, or extending from one side of the sealing portion to the inner side of the pouch, The plurality of pin holes are formed to be spaced apart from each other to provide easy tearing, The pin hole is a pouch having an easily tearable pin hole portion, characterized in that the width of the cross section is changed from the inside of the pouch to the outside so as to prevent the leakage of the contents. The method of claim 1, The pouch has a notch is formed in the sealing portion, the pouch having an easy tear pin hole portion characterized in that the pin hole is formed by connecting to the notch. The method of claim 1, The pouch is a pouch having an easily tearable pin hole portion, characterized in that the distance between the pin hole and the pin hole is not formed is 2.0 to 3.0mm. delete The method of claim 1, Pouch having an easy tear pin hole portion, characterized in that the cross-sectional area is gradually reduced or increased. The method of claim 5, wherein A pouch having an easily tearable pin hole portion, characterized in that the cross section of the pin hole is circular and the largest diameter of the cross section is 1.0 to 1.5 mm. In the manufacturing method of the pouch, After sealing the front and rear films of the pouch in the sealing position, pin holes penetrating the front and rear films of the pouch so as to extend to one side of the sealing portion or to one of the sealing portions to the inner side of the pouch. Form a plurality of By punching the front and back films of the pouch with punches of different upper and lower cross-sectional diameters, to prevent leakage of the contents, the cross-sectional area of the pin hole is varied from inside to outside of the pouch, And a plurality of pin holes spaced apart from each other in order to provide easy tearing property. The method of claim 7, wherein A notch is formed in the sealing portion of the pouch, and a pin hole portion is provided, characterized in that it is connected to the notch. The method of claim 7, wherein A method of manufacturing a pouch having an easily tearable pin hole portion, characterized in that the distance between the pin hole and the pin hole is not formed is 2.0 to 3.0mm. delete The method of claim 7, wherein The cross-sectional area is gradually reduced or increased, the manufacturing method of the pouch having the easy tear pin hole portion characterized in that. The method of claim 11, A method for manufacturing a pouch having an easily tearable pin hole portion, wherein the cross section of the pin hole is circular and the largest diameter of the cross section is 1.0 to 1.5 mm.

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