KR20240028767A - A method for manufacturing pouch packs using single material that prevents leakage and is recyclable, and pouch packs using the same - Google Patents

Abstract

The present invention relates to 'a method of manufacturing a pouch pack using a single material that prevents leakage and is recyclable, and a pouch pack using the same';
In particular, the problem of difficult recycling as the pouch pack of the prior art is made of composite materials has been replaced with a single material of polyethylene (PE), making it easy to recycle the packaging material and contributing to resource circulation and carbon reduction;
By improving the sealing structure of the pouch pack used for inserting or storing liquid and solid contents, leakage of the pouch pack is prevented and at the same time can be recycled by using a single polyethylene material rather than a composite material;
It is possible to contribute to resource circulation and carbon reduction;
Leakage of the pouch pack is prevented even when polyethylene (PE) film, which has lower tensile strength and thermal stability compared to pouch packs made of polyethylene terephthalate (PET) or polyamide (NY), is used;
It is easy to manufacture, has improved workability, and is convenient to use; It is about 'a method of manufacturing a pouch pack using a single material that prevents leakage and is recyclable, and a pouch pack using the same'.

Description

A method for manufacturing pouch packs using single material that prevents leakage and is recyclable, and pouch packs using the same}

The present invention relates to 'a method of manufacturing a pouch pack using a single material that prevents leakage and is recyclable, and a pouch pack using the same';

More specifically, the sealing structure of the pouch pack used for inserting or storing liquid and solid contents has been improved, and the pouch pack is made of a single polyethylene material rather than a composite material to prevent leakage and to be recyclable. , which relates to 'a method of manufacturing a pouch pack using a single material that is leak-proof and recyclable, and a pouch pack using the same';

In particular, the problem of difficult recycling as the pouch pack of the prior art is made of composite materials has been replaced with a single material of polyethylene (PE), making it easy to recycle the packaging material and contributing to resource circulation and carbon reduction;

Polyethylene terephthalate (PET) or polyamide (NY) with enhanced tensile strength and thermal stability properties are used to prevent leakage due to the characteristics of the pouch pack, which applies a bottom surface to the body of the pouch pack so that it can be displayed upright. ), a pouch pack made of material is used, and even though polyethylene (PE) film is used, which has lower tensile strength and thermal stability compared to pouch packs made of polyethylene terephthalate (PET) or polyamide (NY) material, liquid leakage from the pouch pack occurs. prevented;

It is easy to manufacture, has improved workability, and is convenient to use; It is about 'a method of manufacturing a pouch pack using a single material that prevents leakage and is recyclable, and a pouch pack using the same'.

Hereinafter, the technology underlying the present invention will be described;

The technology behind the present invention is It is described in detail in “Pouch for food packaging and manufacturing method thereof,” registered as Republic of Korea Patent No. 10-2180730 (registration date: November 13, 2020), and the technology behind the invention is cited by citing this. Additional problems with the prior art are described.

As shown in Figure 1;

In general, pouch packaging is widely used in food packaging. Pouch packaging is excellent in the food packaging field in terms of light weight, low cost, and ease of handling (filling and packaging workability, displayability, ease of opening and disposal, etc.), and is widely used as alternative packaging for barrels, bottles, and hard plastic containers. there is.

Pouch packaging materials include paper, cellophane, aluminum foil, plastic film, evaporated film (aluminium, silicon oxide, etc.), cloth, synthetic paper, etc., and their performance as a packaging container is practically superior to that of metal or glass containers. Pouches ranging from non-invasive to high-performance pouches have been developed and put into practical use.

Depending on the shape, pouches include flat pouches, wrinkled pouches, and standing pouches. Depending on the sealing method, there are back-sealed, three-sided sealed, and four-sided sealed pouches. Depending on the purpose, pouches are used for general packaging and vacuum packaging. , gas exchange packaging, retort, stick pack, etc.

In addition, the types of packaging materials that make up the pouch are different depending on the contents filled in the pouch.

As physical properties of packaging materials, flexibility and tear resistance are required to prevent damage from external shock and pressure during handling. Additionally, gas and moisture sealing performance is required to prevent deterioration of packaged materials and minimize loss of freshness.

Therefore, the above-mentioned Patent No. 10-2180730 of the prior art;

Polypropylene inner film (10);

An intermediate film (20) laminated on one side of the inner film and including a low-density polyethylene film; A pouch for food packaging comprising a polyester outer film (30) laminated on the intermediate film,

The intermediate film 20 has an embossed structure including a plurality of holes on the surface in contact with the inner film 10,

On the surface where the intermediate film 20 and the inner film 10 are in contact, the portion where the plurality of holes are formed is spaced apart from the inner film 10, and in a general situation, the portion of the plurality of holes is an empty space. There is,

A food packaging pouch, wherein when the pressure inside the food packaging pouch increases, the inner film portion located in the plurality of holes expands and comes into close contact with the inside of the hole;

(S1) preparing a polypropylene inner film (10), an intermediate film (20) containing a low-density polyethylene film, and a polyester outer film (30);

(S2) embossing the intermediate film 20;

(S3) laminating the outer film 30 to one side of the intermediate film 20;

(S4) manufacturing a laminate film by laminating the inner film 10 to the other side of the intermediate film 20; and

(S5) A method of manufacturing a pouch for food packaging according to claim 1, including the step of manufacturing a pouch using the laminated film.

In addition, in general, polyethylene terephthalate (PET) or polyamide (NY) film, which has good printability to convey information about the contents and can ensure thermal stability when manufacturing pouch packs, is put into a printer to print the design and prevent tearing. In order to maintain strength and impact resistance, polyamide (NY) film as an intermediate layer is put into the laminating machine together with the printed matter to create the first laminate, and then low-density polyethylene (LLDPE) is used to secure the sealing and impact resistance necessary for making pouch packs. ) The film is re-introduced into the laminating machine together with the first laminating material to produce fabric.

It can also be manufactured by extruding polyethylene (PE) resin through an extruder (T-die).

The produced fabric is manufactured into pouch packs through an umbilical cord equipment. One piece of fabric is divided into front and back sides, and the bottom is folded in two layers so that the pouch pack can be displayed upright before being put into an umbilical cord equipment.

It consists of a pouch pack and manufacturing method that produce a pouch that can stand by sealing one side of the inserted bottom with the front of the divided body fabric and the other side with the back at 230 or 260 degrees.

In addition, for user convenience, it consists of a pouch pack and a manufacturing method in which the final spout-type standing pouch pack is produced by attaching a spout cap made of polypropylene (PP) to the pouch pack at a temperature of 240 to 270 ° C.

However, when the pouch pack is manufactured using composite materials made of polyethylene, polypropylene, polyester, polyethylene terephthalate, and polyamide, including Patent No. 10-2180730, the thermal stability during the manufacturing process is high, even at high temperatures. Although manufacturing convenience is high, from an environmental point of view, the printing layer, middle layer, sealing layer, and cap are composed of a composite structure of different materials, so it is impossible to distinguish by layer, so recycling itself after use is difficult, resulting in the problem of being disposed of as waste. .

In addition, under the above processing conditions, single-material pouch packs use polyethylene film, which has much lower thermal stability than polyethylene terephthalate or polyamide materials, as the surface layer, which may cause the fabric to melt during pouch pack manufacturing or break during transport. There is a problem that pouch pack production becomes impossible due to heat shrinkage, and when polyethylene (PE) fabric and polypropylene (PP) cap are worked in the spout process, the fabric melts severely at the sealing area of the cap.

Conversely, for composite pouch packs, if the sealing temperature of the bag manufacturing machine is below 120℃ and the spout process for attaching the cap is below 200℃, sealing will not be realized, which will affect the function of the pouch. You will not be able to have .

In addition, the composition of the pouch pack made of composite materials significantly reduces workability, increases manufacturing costs, and causes inconvenience in use.

By the 'method of manufacturing a pouch pack using a leak-proof and recyclable single material and a pouch pack using the same' of the present invention: improving the problems of the prior art,

In particular, in order to solve the problem that the pouch pack of the prior art is made of composite materials and difficult to recycle, the sealing structure of the pouch pack was improved and replaced with a single material of polyethylene (PE), making it easy to recycle the packaging material and contributing to resource circulation and resource circulation. Contribution to carbon reduction is possible;

Leakage of the pouch pack is prevented even when polyethylene (PE) film, which has lower tensile strength and thermal stability compared to pouch packs made of polyethylene terephthalate (PET) or polyamide (NY), is used;

The single-material pouch pack structure reduces manufacturing costs, makes it easy to manufacture, significantly improves workability, and is easy to use; The purpose of the present invention and the problem that the present invention seeks to solve are to provide 'a method of manufacturing a pouch pack using a single material that prevents leakage and is recyclable, and a pouch pack using the same'.

According to the present invention, the sealing structure of the pouch pack used for inserting or storing liquid and solid contents has been improved, and the pouch pack is made of a single polyethylene material rather than a composite material to prevent leakage and to be recyclable;

Step S1: Pouch pack fabric manufacturing step by laminating, extruding, and dividing a printed layer film with a printed pattern printed on a film made of low-density polyethylene or linear low-density polyethylene, and a sealing layer film made of the same material as the printed layer film:

Step S2: The pouch pack fabric, which consists of 4 layers (2 layers for the body and 2 layers for the bottom), is first sealed at the body and bottom by the bottom sealing bar, which is a sealing device, and then transferred to the side, and then the side of the pouch pack is placed on the vertical sealing bar. When the side sealing is in progress, at the end of the bottom folded in half by the upper and lower sealing bars, a total of 4 layers of steps, 2 layers of the body and 2 layers of the bottom, are applied at a temperature of 110 to 150 degrees for 1 to 3 seconds. Step of manufacturing a single-material pouch pack consisting of 4 layers, 2 layers of the body and 2 layers of the bottom, with secondary sealing:

Step S3: Step of cutting and packaging the pouch pack:

Step S4: After first sealing the spout cap at a temperature of 120 to 150°C for 1 to 3 seconds and secondary sealing the wings of the spout cap and the inner surface of the pouch pack at a temperature of 125 to 155°C for 1 to 3 seconds, seal the spout. Steps in which a pouch pack equipped with a spout cap is manufactured by thirdly sealing the cap and the fabric of the pouch pack as a whole: 'Method of manufacturing a pouch pack using a single material that prevents leakage and is recyclable';

We aim to solve the above problem by providing a 'pouch pack using a single material that prevents leakage and is recyclable', manufactured using the manufacturing method of steps S1 to S4.

Due to the composition of the present invention, “a method of manufacturing a pouch pack using a single material that prevents leakage and is recyclable, and a pouch pack using the same”; Improving the problems of the prior art,

In particular, the problem of difficulty in recycling because the pouch pack of the prior art is made of composite materials has been replaced with a single material of polyethylene (PE), which has the effect of facilitating recycling of the packaging material;

the possible effects of contributing to resource circulation and carbon reduction;

The effect of preventing leakage of the pouch pack even when using polyethylene (PE) film, which has lower tensile strength and thermal stability compared to pouch packs made of polyethylene terephthalate (PET) or polyamide (NY) materials;

The single-material pouch pack structure reduces manufacturing costs, makes it easy to manufacture, significantly improves workability, and makes it easier to use; This is a very useful invention.

1 is a reference diagram of a prior art pouch;
Figure 2 is a schematic diagram schematically showing the manufacturing method of the pouch pack of the present invention;
Figures 3 and 4 are reference diagrams showing the pouch pack of the present invention and its sealed state;
Figure 5 is a reference diagram showing a state in which the spout cap is sealed in the pouch pack of the present invention;
Figure 6 is a reference diagram showing a method of manufacturing the thickness difference sealing of the pouch pack of the present invention;
Figure 7 is a reference diagram showing the thickness difference sealing manufacturing device of the pouch pack of the present invention.
Figure 8 is a reference diagram of a pouch pack manufactured by the manufacturing method of the present invention.

Hereinafter, according to the attached drawings, the present invention We will explain in detail the “method of manufacturing a pouch pack using a single material that prevents leakage and is recyclable, and the pouch pack using the same.”

『The numerical ranges specified in the manufacturing method and pouch pack constituting the present invention are not simply numerical values and are limited to:

A manufacturing method of an improved configuration to meet the purpose of the present invention through numerous experiments and efforts by the present applicant. And as the numerical range specified on the pouch pack;

Compared to the manufacturing method and pouch pack of the prior art made of composite materials of polyethylene, polypropylene, polyester, polyethylene terephthalate, and polyamide:

In particular, the sealing structure of the pouch pack was improved. The pouch pack has been replaced with a single material of polyethylene (PE), making it easy to recycle the packaging material;

It is possible to contribute to resource circulation and carbon reduction;

Leakage of the pouch pack is prevented even when polyethylene (PE) film, which has low tensile strength and low thermal stability, is used;

Manufacturing costs are reduced by constructing a pouch pack made of a single material;

It is easy to manufacture, significantly improves workability, and is convenient to use. As the numerical range specified in the pouch pack and manufacturing method,

As further specified in the embodiments of the present invention; This makes it clear that this is not just a simple numerical limitation.

As shown in Figure 2,

The 'method of manufacturing a pouch pack 100 using a leak-proof and recyclable single material' of the present invention, which is used as a pouch pack for inserting or storing liquid and solid contents, is as follows. It consists of the same steps S1 to S4.

Step S1: The printing pattern is printed on a film made of low-density polyethylene or linear low-density polyethylene. A printing layer film and a sealing layer film made of the same material as the printing layer film, Pouch pack fabric manufacturing steps through lamination, extrusion, or division processes;

The S1 step is,

A step in which pouch pack fabric, a semi-finished product of a pouch pack composed of a printing layer film and a sealing layer film, is manufactured,

A printed layer film 120 with a printed pattern printed on a low-density polyethylene (LDPE) or linear low-density polyethylene (LLDPE) film that improves thermal and physical properties, and a low-density polyethylene (LDPE) or linear low-density polyethylene (LLDPE) film that has sealing properties even at low temperatures. A step in which the sealing layer film 130 made of polyethylene (LLDPE) is manufactured into the pouch pack fabric 110 through a lamination, extrusion, or dividing process;

In the present invention, the pouch pack fabric 110, which consists of the printing layer film 120 and the sealing layer film 130, uses only polyethylene (PE)-based films, making it possible to manufacture a pouch pack made of a single polyethylene material, and it is also necessary. Accordingly, a bottom layer film 140 made of the same material as the sealing layer film 130 to be used on the bottom of the pouch pack is manufactured separately.

Step S2: The pouch pack fabric, which consists of 4 layers (2 layers for the body and 2 layers for the bottom), is first sealed at the body and bottom by the bottom sealing bar, which is a sealing device, and then transferred to the side, and then the side of the pouch pack is placed on the vertical sealing bar. When the side sealing is in progress, at the end of the bottom folded in half by the upper and lower sealing bars, a total of 4 layers of steps, 2 layers of the body and 2 layers of the bottom, are applied at a temperature of 110 to 150 degrees for 1 to 3 seconds. Secondary sealing to manufacture a single-material pouch pack composed of 4 layers: 2 layers of the body and 2 layers of the bottom;

In step S2,

A step in which the pouch pack 100 is manufactured with the pouch pack fabric 110 composed of the printing layer film 120 and the sealing layer film 130 manufactured through the S1 step process,

Printing layer film 120 and sealing layer film 130 used as the body of the pouch pack 100

The body 210 of the pouch pack fabric 110 composed of is two-layered on the front (body 1: 211) and the back (body 2: 212), and in the case of the bottom surface 220, the sealing layer film 230 and Consisting of bottom surfaces 1 and 2 (221,222) in which the bottom layer film 140 of the same material is folded in half in two layers,

Body 210: 2 layers on the front and back (body 1, 2: 211, 212), bottom 220: 2 layers on the bottom 1, 2 (221, 222), a pouch pack fabric consisting of a total of 4 layers (110) ) is sealed (sealed) to manufacture a pouch pack 100 made of a single polyethylene material;

In the case of pouch packs made of a single material, they are composed only of polyethylene (PE)-based films that lack heat resistance during the sealing process, and at temperatures above 200℃, which is the existing pouch pack production conditions, the printing layer film, the sealing layer film, The pouch pack fabric composed of the bottom layer film shrinks or melts severely, causing holes or tearing during the transport process, making normal sealing impossible.

In the present invention, in order to solve the above problem, the production temperature condition of the sealing process requires that a sealing bar with a temperature of 110 to 150°C be operated for 1 to 3 seconds, and the upper and lower sealing bars are in contact with each other to form the pouch pack fabric. A pouch pack is manufactured by melting the inner film and sealing it with each other;

As shown in Figures 3 and 4;

The pouch pack body 210 and the bottom surface 220 are first sealed by the lower sealing bar 510.

After being transferred to the side, both sides 230, which are the vertical sides of the pouch pack, are sealed by the vertical sealing bar 520.

In addition, when sealing both sides of the pouch pack is in progress, a total of 4 layers, including 2 layers of body 1 and 2 (211,212) and 2 layers of bottom surface 1 and 2 (221,222), meet each other at the end of the bottom surface 220 that is folded in half. Due to the thickness difference 240, perfect sealing is difficult, resulting in leakage of contents.

Therefore, in order to solve the problem of leakage, in the present invention, a vertical sealing bar

After first sealing the two sides 230 of the pouch pack using 520, the upper and lower sealing bars 531 and 532, which are the sealing devices of the present invention, are used to seal the body 1 and 2 (211,

212) Sealing is carried out twice for a total of 4 layers, 2 layers and 2 layers for the bottom surface (221,222). (See Figures 6 and 7)

The sealing condition is operated at a temperature of 110 to 150 degrees for 1 to 3 seconds, and at this time, the pressure must be appropriately given visually due to the nature of the equipment without a gauge.

When the pressure is high, the adhesion between fabrics improves, but holes may occur due to tearing or crushing.

Step S3: cutting and packaging the pouch pack;

The pouch pack manufactured in step S2 is cut and packaged one by one.

Step S4: After first sealing the spout cap at a temperature of 120 to 150°C for 1 to 3 seconds and secondary sealing the wing area of the spout cap and the inner surface of the pouch pack at a temperature of 125 to 155°C for 1 to 3 seconds, seal the spout. A step of manufacturing a pouch pack equipped with a spout cap by third sealing the cap and the fabric of the pouch pack as a whole;

In step S4,

After the manufacturing of the pouch pack 100 is completed, a second post-process is performed in the equipment for installing the spout cap 300, and the sealing work is carried out step by step over three times.

In particular, a high-temperature resistant cloth is applied to the surface of the metal silver, which is the installation equipment for the spout cap 300, to prevent the temperature of the metal silver from being transferred directly to the film, thereby preventing the polyethylene (PE) film that makes up the pouch pack fabric from melting. A spout cap can be attached.

As shown in Figure 5;

During the primary sealing of the spout cap, the cap body 310 is linearly sealed. At this time, the sealing conditions are sealing at a temperature of about 120 to 150 degrees for 1 to 3 seconds,

During the secondary sealing, the wing area 320 of the cap and the inner surface of the pouch pack fabric 110 are sealed. At this time, the sealing condition is sealing at a temperature of about 125 to 155 degrees for 1 to 3 seconds,

Finally, during the third sealing, the spout cap body 310 and the pouch pack fabric 110 are completely sealed to complete installation of the spout cap 300, thereby completing the manufacturing of the standing spout pouch pack 100.

As shown in Figures 6 and 7; (see Figure 3)

The configuration of the sealing device 500 according to the thickness difference sealing manufacturing method of the present invention is as follows.

A bottom sealing bar (510: see Figure 3) through which the pouch pack body 210 and the bottom surface 220 are first sealed, and a vertical sealing bar 520 through which the vertical side of the pouch pack is secondarily sealed after the first sealing. composed

go,

The body and the bottom are combined, and a total of 4 layers of the body 1, 2 (211,212) and the 2 layers of the bottom 1, 2 (221,222) meet each other, and the area where the thickness difference (240) occurs is resealed. , a sealing portion 530 consisting of lower sealing bars 531 and 532,

A coupling portion 540 provided outside the sealing portion 530 to which the upper and lower sealing bars 531 and 532 of the sealing portion are coupled,

It consists of a fixing part 550 provided on the outside of the coupling part 540 and having a plurality of fixing holes 552 in the fixing part body 551 to which the coupling part 540 with the upper and lower sealing bars is fixed. ,

The coupling part 540, where the upper and lower sealing bars 531 and 532 are combined, is configured to be moved and fixed in the plurality of fixing holes 552 provided in the fixing unit body 551, and is attached to the coupling part 540. There is an advantage that the fixed upper and lower sealing bars (531, 532) can be applied by moving their positions according to the specifications of the pouch pack body and bottom.

In particular, when the thickness difference is very large (more than 500㎛), the sealing characteristics can be further improved by modifying the surface of the sealing part into a curved shape (see Figure 4).

Therefore, the 'pouch pack using a single material' consisting of steps S1 to S4 of the present invention

The manufacturing method of (100) is;

A manufacturing method that replaces the problem of the pouch pack of the prior art, which is difficult to recycle because it is made of a composite material, with a single material of polyethylene (PE), making it easy to recycle the packaging material and contributing to resource circulation and carbon reduction;

Polyethylene terephthalate (PET) or polyamide (NY) with enhanced tensile strength and thermal stability properties are used to prevent leakage due to the characteristics of the pouch pack, which applies a bottom surface to the body of the pouch pack so that it can be displayed upright. ), a pouch pack made of material is used, and even though polyethylene (PE) film is used, which has lower tensile strength and thermal stability compared to pouch packs made of polyethylene terephthalate (PET) or polyamide (NY) material, liquid leakage from the pouch pack occurs. It consists of a manufacturing method that has been prevented.

In addition, when manufacturing a pouch pack made of a single material, there is a difference in thickness at the area where the side of the pouch pack is sealed with only 2 layers of the body and the area where the area is sealed with a total of 4 layers of 2 layers of the body and 2 layers of the bottom. As a result, it is difficult to achieve a complete sealing effect, resulting in fine gaps, and in the case of liquid contents, leakage occurs.

In particular, the upper and lower sealing bars (531, 532), which are thickness difference sealing bars consisting of an upper and lower set, are applied during the secondary sealing and are simultaneously sealed on the front and back of the pouch pack, thereby sealing the fine gaps caused by the thickness difference more reliably. By zooming, it is possible to manufacture an excellent standing pouch pack that prevents leakage of contents without deforming the single-material film due to high-temperature sealing.

The sealing device 500 using the thickness difference of the present invention is designed to move and adjust the positions of the upper and lower sealing bars 531 and 532 even if the width standard of the pouch pack 100 is different, so it can be applied to the production of various pouch packs. There is,

As the size of the pouch pack increases, the thickness of the pouch pack also increases to protect the contents, resulting in a total of 4 layers: 2 layers of body 1 and 2 (211,212) and 2 layers of bottom 1 and 2 (221,222) on the body and bottom. The upper and lower sealing bars solve the problem of the thickness difference becoming larger.

(531,532) It is composed of a manufacturing method that allows for more stable sealing without leakage by applying a curved shape to the interior,

The point sealing part 250 is changed from one part in the prior art to two parts, and a manufacturing method is used to further improve the phenomenon of leakage due to bursting due to a drop impact.

In addition, the pouch pack is easy to manufacture because it is made of a single material, which further improves workability and provides an easy-to-use manufacturing method; It consists of ‘a method of manufacturing a pouch pack using a single material that prevents leakage and is recyclable.’

Additionally, as needed;

A printed layer film, a sealing layer film, and a bottom layer film in which a printing pattern is printed on the film made of low-density polyethylene or linear low-density polyethylene in step S1;

Each may be composed of low-density polyethylene films of the same composition, or may be composed of linear low-density polyethylene films,

Printing layer films of different composition: low-density polyethylene film, sealing layer film and bottom layer film: may be composed of linear low-density polyethylene film,

Printing layer films of different compositions: linear low-density polyethylene film, sealing layer film and bottom layer film: may be composed of low-density polyethylene film;

A printed layer film, a sealing layer film, and a bottom layer film in which a printing pattern is printed on the film made of low-density polyethylene or linear low-density polyethylene in step S1; It may also be composed of high-density polyethylene film.

As described above, the present invention is characterized by a method of manufacturing a pouch pack in which the printing layer film 120, the sealing layer film 130, and the bottom layer film 140 are made of a single polyethylene-based material.

As shown in Figure 8,

'Pouch pack 100 using a single material that prevents leakage and is recyclable', manufactured by the manufacturing method of steps S1 to S4 of the present invention; (see Figures 2 to 7: manufacturing method drawing)

1) A printed layer film 120, which is a surface layer with a printed pattern printed on a low-density polyethylene (LDPE) or linear low-density polyethylene (LLDPE) film,

2) Pouch pack fabric consisting of a sealing layer film 130 made of low-density polyethylene (LDPE) or linear low-density polyethylene (LLDPE) laminated to the printing layer film, which is the surface layer.

(110) and;

3) a bottom layer film 140 in which a sealing layer film made of the same material as the sealing layer film 130 is folded in half and sealed at the bottom of the pouch pack made of the pouch pack fabric 110;

4) The pouch pack fabric 110 is sealed with a total of 4 layers of pouch pack fabric, including a two-layer body 1 and 2 (211,212) on the front and back, and a bottom surface 1 and 2 (221,222) with the bottom folded in half. A unit 200 is provided;

5) It consists of a spout cap 300 made of synthetic resin including polyethylene bonded to the top of the pouch pack fabric 110.

The printed layer film 120 is,

It consists of a printed layer film, which is a surface layer with a printed pattern printed on a low-density polyethylene (LDPE) or linear low-density polyethylene (LLDPE) film with improved thermal and physical properties.

The sealing layer film 130 is,

It is composed of a sealing layer film made of low-density polyethylene (LDPE) or linear low-density polyethylene (LLDPE) that can have sealing properties even at low temperatures,

In addition, it is composed of a pouch pack fabric 110 in which a printing layer film 120 and a sealing layer film 130 are laminated.

The bottom layer film 140 is,

It is composed of a bottom layer film made of the same material as the sealing layer film 130 and sealed at the bottom of the pouch pack fabric 110 in which the printing layer film 120 and the sealing layer film 130 are laminated.

The spout cap 300 is;

It consists of a spout cap 300 consisting of a cap body 310 made of synthetic resin including polyethylene and a wing portion 320 bonded (sealed) to the top of the pouch pack fabric 110.

In addition, the pouch pack fabric 110, which is composed of a printing layer film and a sealing layer film, has two layers on the front and back, and in the case of the bottom, the bottom layer film made of the same material as the sealing layer film is folded in two layers, Body 1 ,2: 2 layers on the front and back, bottom 1,2: 2 layers folded in half, a total of 4 layers of pouch pack fabric are sealed, forming a pouch pack (100) made of a single polyethylene material. .

Therefore, when the side of the pouch pack is sealed, a total of 4 layers (2 layers of the body and 2 layers of the bottom) meet each other at the end of the bottom folded in half, and the thickness difference that occurs at this time makes perfect sealing difficult, causing the problem of contents leaking. It happens.

In order to solve the problem of leakage, the sides of the pouch pack of the present invention are first sealed, and then the upper and lower sealing bars 531 and 532, which are the sealing devices of the present invention, are used to seal the area where the step occurs. It consists of a 'pouch pack (100) using a single material that prevents leakage and is recyclable' using the manufacturing method of the present invention.

Therefore, in order to solve the problem that the pouch pack of the prior art is made of composite materials and difficult to recycle, the sealing structure of the pouch pack has been improved and replaced with a single material of polyethylene (PE), making recycling of the packaging material easier and recycling of resources. and technology composition that can contribute to carbon reduction;

The technical composition prevents leakage of the pouch pack even though it uses polyethylene (PE) film, which has lower tensile strength and thermal stability compared to pouch packs made of polyethylene terephthalate (PET) or polyamide (NY) materials;

The manufacturing cost is reduced by constructing a pouch pack made of a single material, the workability is significantly improved due to the ease of manufacturing, and the technical structure is easy to use; It consists of ‘pouch packs (100) made from a single material that prevents leakage and is recyclable.’

Additionally, as needed;

A printing layer film 120, a sealing layer film 130, and a bottom layer film 140 in which a printing pattern is printed on the film made of low-density polyethylene or linear low-density polyethylene;

Each may be composed of low-density polyethylene films of the same composition, or may be composed of linear low-density polyethylene films,

Printing layer films (120) of different configurations: low-density polyethylene film, sealing layer film, and bottom layer film (130.140): may be composed of linear low-density polyethylene films,

Printing layer films 120 of different configurations: linear low-density polyethylene film, sealing layer film, and bottom layer films 130, 140: may be composed of low-density polyethylene films;

The printing layer film 120, the sealing layer film 130, and the bottom layer film 140; It may also be composed of high-density polyethylene film.

As described above, the present invention is characterized in that the printing layer film 120, the sealing layer film 130, and the bottom layer film 140 are composed of a pouch pack made of a single polyethylene-based material.

Above, the present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art within the scope of the technical idea of the present invention.

100: Pouch pack manufactured by the manufacturing method of the present invention
110: Pouch pack fabric
120: Printed layer film
130: Sealing layer film
140: bottom layer film
200: Sealing part
210: body 211, 212: body 1,2
220: bottom surface 221, 222: bottom surface 1,2
230: Vertical surface (both sides) 240: Thickness step
250: Point sealing part
300: spout cap
310: Cap body 320: Wing area
500: Sealing device of the present invention
510: Bottom sealing bar 520: Vertical sealing bar
530: Sealing part 531,532: Upper and lower sealing bars
540: coupling part
550: Fixing part
551: Fixing body 552: Fixing hole
Prior art pouch
10: inner film 20: intermediate film
30: External film

Claims (8)

A method of manufacturing a pouch pack used for inserting or storing liquid and solid contents;

Step S1: Pouch pack fabric manufacturing step by laminating, extruding, and dividing a printed layer film with a printed pattern printed on a film made of low-density polyethylene or linear low-density polyethylene, and a sealing layer film made of the same material as the printed layer film:
Step S2: The pouch pack fabric, which consists of 4 layers (2 layers for the body and 2 layers for the bottom), is first sealed at the body and bottom by the bottom sealing bar, which is a sealing device, and then transferred to the side, and then the side of the pouch pack is placed on the vertical sealing bar. When the side sealing is in progress, at the end of the bottom folded in half by the upper and lower sealing bars, a total of 4 layers of steps, 2 layers of the body and 2 layers of the bottom, are applied at a temperature of 110 to 150 degrees for 1 to 3 seconds. Step of manufacturing a single-material pouch pack consisting of 4 layers, 2 layers of the body and 2 layers of the bottom, with secondary sealing:
Step S3: Step of cutting and packaging the pouch pack:
Step S4: After first sealing the spout cap at a temperature of 120 to 150°C for 1 to 3 seconds and secondary sealing the wing area of the spout cap and the inner surface of the pouch pack at a temperature of 125 to 155°C for 1 to 3 seconds, seal the spout. A method of manufacturing a pouch pack using a single material that prevents leakage and is recyclable, characterized in that the pouch pack equipped with a spout cap is manufactured by third sealing the cap and the fabric of the pouch pack as a whole. The method of claim 1, wherein in step S1;
A method of manufacturing a pouch pack using a single material that prevents leakage and is recyclable, characterized in that a bottom layer film of the same material as the sealing layer film to be used on the bottom of the pouch pack is manufactured separately. The method of claim 1, wherein step S2;
The pouch pack fabric, which consists of a printing layer film and a sealing layer film used as the body of the pouch pack, has two layers on the front (body 1) and back (body 2), and the bottom is made of the same material as the sealing layer film. A pouch pack fabric consisting of a total of 4 layers, consisting of bottom surfaces 1 and 2, in which the bottom layer film is folded in half in 2 layers, is sealed, and a pouch pack composed of a single polyethylene material is manufactured, which prevents leakage and is recyclable. A method of manufacturing a pouch pack using a single material whenever possible. The method of claim 1, wherein step S2;
The pouch pack body and bottom are first sealed by the lower sealing bar, and after being transported to the side, both sides of the pouch pack are first sealed using the vertical sealing bar, and then the upper and lower sealing bars are used to create a step, body 1, It is sealed twice for a total of 4 layers, including 2 layers of 2 and 2 layers of floors 1 and 2.
A method of manufacturing a pouch pack using a single material that prevents leakage and is recyclable, characterized by sealing at a temperature of 110 to 150°C for 1 to 3 seconds. The method of claim 1, wherein the sealing device in step S2;
A sealing part consisting of upper and lower sealing bars where the body and the bottom are combined and a total of 4 layers (2 layers of body 1 and 2 and 2 layers of bottom surface 1 and 2) meet each other to reseal the area where the thickness difference occurs,
A coupling part provided outside the sealing part and where the upper and lower sealing bars of the sealing part are coupled,
It is characterized by being composed of a fixing part provided with a plurality of fixing holes in the main body of the fixing part provided on the outside of the coupling part and fixing the coupling part where the upper and lower sealing bars are combined, using a single material that prevents leakage and is recyclable. How to manufacture a pouch pack. According to claim 5, a coupling portion where the upper and lower sealing bars are joined;
It is a configuration that can be fixed by moving the position in a plurality of fixing holes provided in the fixing unit main body, and is characterized in that the upper and lower sealing bars fixed to the coupling unit are moved in accordance with the specifications of the pouch pack body and bottom, preventing leakage. A method of manufacturing a pouch pack using a single material that is preventable and recyclable. According to claim 1, in the manufacturing method of steps S1 to S4;
A printed layer film, which is a surface layer with a printed pattern printed on low-density polyethylene or linear low-density polyethyl film,
A pouch pack fabric composed of a sealing layer film made of low-density polyethylene or linear low-density polyethylene laminated to the printing layer film, which is the surface layer;
a bottom layer film in which a sealing layer film made of the same material as the sealing layer film is folded in half and sealed at the bottom of the pouch pack made of the pouch pack fabric;
A pouch pack using a single material that prevents leakage and is recyclable, characterized in that the pouch pack is manufactured consisting of a spout cap made of synthetic resin material including polyethylene bonded to the upper part of the pouch pack fabric. The printing layer film, the sealing layer film, and the bottom layer film according to any one of claims 1, 2, or 7;

Each consists of a low-density polyethylene film of the same composition, or consists of a linear low-density polyethylene film, or each has a different composition: a printing layer film: a low-density polyethylene film, a sealing layer film and a bottom layer film: each consisting of a linear low-density polyethylene film, or Printing layer films of different composition: linear low-density polyethylene film, sealing layer film and bottom layer film: Pouch pack utilizing a leak-proof and recyclable single material, characterized by being composed of low-density polyethylene film or high-density polyethylene film. Manufacturing method.