US20130008134A1

US20130008134A1 - Straight-split pouch, method for manufacturing same, and device for manufacturing the pouch

Info

Publication number: US20130008134A1
Application number: US13/520,315
Authority: US
Inventors: Won Tae Kim; Hanil Lee
Original assignee: Flair Flexible Packaging Corp; SAM A ALUMINIUM CO Ltd
Current assignee: SAM-A ALUMINIUM Co Ltd; Flair Flexible Packaging Corp; SAM A ALUMINIUM CO Ltd
Priority date: 2010-06-08
Filing date: 2011-05-25
Publication date: 2013-01-10
Also published as: MX2012007691A; CA2786039A1; WO2011155717A3; CN102753447A; WO2011155717A2; KR101043022B1

Abstract

A straight-split pouch, a method for manufacturing the pouch, and a device for manufacturing the pouch. The pouch is based on a front synthetic resin sheet and a rear synthetic resin sheet, has a notch marking the tear starting point at the openable portion, and has a series of multiple grooves for splitting disposed at a predetermined distance from one another along a straight line at the openable portion starting from the notch. The method includes producing a base film; producing the grooves for splitting; applying an adhesive to the surface protection layer and drying the layer; adhering the base film to the surface protection layer; sealing a large-area sheet; and cutting the sealed large-area sheet and forming the notch. The device includes first and second winding portions; an adhesive application portion; a chamber; a shaping apparatus; a laminating treatment portion; and a heat seal and cutting portion.

Description

TECHNICAL FIELD

The present invention relates to a straight-split pouch for packaging a product which needs to be protected from moisture or oxygen for a long time and, more particular, to a straight-split pouch which has a predetermined straight cutting line so as to be smoothly cut along the cutting line at all times during opening, a method for manufacturing the pouch, and an apparatus for manufacturing the pouch.

BACKGROUND ART

The primary purpose of packaging is to protect and preserve the contents of the packaging. In particular, a packing material having excellent vapor and gas barrier properties is used for a product, whose preservation is influenced by moisture or oxygen, and a secure seal for sealing a container is required.
However, easiness off taking out the contents of the packaging, i.e., easy opening performance is also an important function of the packaging as well as the protection and, when the two opposing factors such as sealability and openability are satisfied at the same time, it can be considered as excellent packaging.
Heat seal flexible packaging pouches such as food/medicine pouches using a laminate packing material based on a plastic film, stick packaging pouches, etc. can provide various packaging functions required for products and thus are widely used in the field of packaging.
A laminate film essentially comprises a base film, a barrier layer, and a sealant film and is subjected to bag-making, filling, and sealing depending on the packaging process. Here, the bag-making and sealing processes are performed by heat sealing.
As mentioned above, the sealing of the heat seal flexible packaging pouch requires a uniform and secure seal to sufficiently protect the contents of the pouch. However, when the contents of the pouch are to be taken out, it may be difficult to easily remove the top seal. To this end, most flexible pouches require an “easy-cut” function as an opening means.
A useful way for the easy-cut function of the heat seal flexible pouch is to form a notch corresponding to a tear starting point at an opening position. When forming the tear starting point, i.e., the notch, the start of cutting becomes easy. However, if the tearing direction is irregular due to the properties of the base film that constitutes the pouch, the cutting performance is poor, the directionality is irregular, and thus the pouch is torn in a random pattern.
To solve this problem, a method for forming fine, perforations at regular intervals along a cutting line (i.e., perforated line) by laser processing such that the cutting line is cut smoothly and straightly when opening the pouch has been used. However, the pouch may easily burst by a small external pressure such as impact or pressure due to the perforations, and thus the above method is mainly applied to small pouches for packaging powder products such as instant coffee, condiments, etc.

DISCLOSURE

Technical Problem

Accordingly, an object of the present invention is to provide a straight-split pouch, which can ensure easy cutting even when the tearing direction is irregular due to the properties of a base film that constitutes the pouch, a method for manufacturing the pouch, and an apparatus for manufacturing the pouch.
Another object of the present invention is to provide a straight-split pouch, which can be cut smoothly along a predetermined straight cutting line at all times during cutting even when a force at a time when the cutting starts acts in a deviated direction, a method for manufacturing the pouch, and an apparatus for manufacturing the pouch.

Technical Solution

In an aspect, the present invention provides a straight-split pouch for packaging a product which needs to be protected from moisture or oxygen for a long time, the pouch essentially comprising two synthetic resin sheets including a front sheet and a rear sheet and having a notch corresponding to a tear starting point at an opening position and a cutting line in which a plurality of cutting grooves continuing in a straight line from the notch are formed at regular intervals along the opening position, wherein each the front sheet and the rear sheet has a structure in which a surface protective layer is stacked on a base film comprising a reinforcing layer and a heat sealable resin layer, and wherein the cutting grooves are formed on one side of the reinforcing layer of the base film bonded to the surface protective layer.
Here, at least two cutting grooves may be spaced vertically at regular intervals from each other.
The interval between the cutting grooves may be 0.1 to 2 mm.
The surface protective layer, the reinforcing layer, and the heat sealable resin layer may be formed of a polyester (PET) film, a nylon film, and a non-oriented or polyethylene (PE) film, respectively.
The surface protective layer, the reinforcing layer, and the heat sealable resin layer may be formed of a polyester (PET) film, a synthetic film in which aluminum is deposited on the surface of nylon, and a non-oriented or polyethylene (PE) film, respectively.
The surface protective layer, the reinforcing layer, and the heat sealable resin layer may be bonded to each other with an adhesive layer interposed therebetween by lamination.
In another aspect, the present invention provides a method for manufacturing a straight-split pouch, the method comprising: (a) forming a base film comprising a reinforcing layer and a heat sealable resin layer; (b) applying an adhesive onto a back side of the surface protective layer, whose front side is printed with information about the contents of the pouch, and drying the resulting layer; (c) forming a cutting line by forming a plurality of straight cutting grooves at regular intervals on one side of the reinforcing layer of the base film which is to be bonded to the surface protective layer; (d) forming large area front and rear sheets by bonding the surface protective layer onto reinforcing layer of the base film; (e) sealing the two large area front and rear sheets into predetermined sections while transferring the large area sheets which are being in contact with each other; and (f) cutting the sealed large area sheets into the sections and, at the same time, forming a notch corresponding to a tear starting point on each pouch.
Here, the application of the adhesive in step (b) may be performed such a manner that the back side of the surface protective layer is moved in contact with the surface of an adhesive applying roller, which is partially exposed to a reservoir storing the adhesive, so as to be continuously applied with the adhesive.
The drying of the adhesive in step (b) may be performed in such a manner that the surface protective layer is continuously passed through a chamber, which has an inlet and an outlet and into which hot air is blown, so as to be dried.
The cutting line in step (c) may be formed by continuously passing the base film through a shaping device comprising a shaping roller having a shaping surface with a fine concave-convex pattern formed on the circumferential surface thereof and a roller rotating in engagement with the shaping roller.
The width of the concave-convex pattern formed on the shaping roller may be 0.1 to 2 mm.
In still another aspect, the present invention provides an apparatus for manufacturing a straight-split pouch, the apparatus comprising: a first winding unit on which a surface protective layer, whose front side is printed with information about the contents of the pouch, is wound; an adhesive applying unit which is configured to continuously apply an adhesive onto a back side of the surface protective layer wound on the first winding unit; a chamber which is configured to dry the adhesive applied onto the back side of the surface protective layer; a second winding unit on which a base film comprising a reinforcing layer and a heat sealable resin layer is wound; a shaping device which is configured to continuously form a plurality of straight cutting grooves at regular intervals on one side of the reinforcing layer of the base film; a lamination unit which is configured to form a large area sheet by laminating the surface protective layer applied with the adhesive and the base film having the cutting grooves; a heat seal which is configured to seal two sheets large sheets transferred in contact with each other into predetermined sections; and a cutting unit which is configured to cut the sealed large area sheets into the sections and, at the same time, form a notch corresponding to a tear starting point on each pouch.
Here, the adhesive applying unit may have a structure in which an adhesive applying roller is rotatably mounted and partially exposed to a reservoir storing the adhesive.
The chamber may have a structure in which an inlet and an outlet, through which the surface protective layer whose back side is applied with the adhesive is continuously passed in a horizontal direction, are provided, and a plurality of hot-air blowing nozzles which blows hot air to dry the adhesive are spaced from each other.
The shaping device may comprise a shaping roller having a shaping surface with a fine concave-convex pattern formed on the circumferential surface thereof and a roller rotating in engagement with the shaping roller, the shaping roller being moved forward and backward by a cylinder and a linear guide connected to the cylinder.
The width of the ccncave-convex pattern formed on the shaping roller may be 0.1 to 2 mm.
The apparatus may further comprise a cooling roller which is configured to cool the large area sheets, each comprising the surface protective layer and the base film which are bonded by the lamination unit.

Advantageous Effects

According to the pouch of the present invention, it is possible to ensure easy cutting even when the tearing direction is irregular due to the properties of a base film that constitutes the pouch and to smoothly cut the pouch along a predetermined straight cutting line at all times during cutting even when a force at a time when the cutting starts acts in a deviated direction.
That is, the pouch according to the present invention has good cutting performance and regular tearing, and thus it is possible to prevent the contents of the pouch from pouring to the outside and the area around the opening from getting dirty due to irregular opening during opening of the pouch.
When the sheets and pouch are manufactured by the method and apparatus for manufacturing the pouch according to the present invention, it is possible to perform the forming, sealing, and cutting of the large area sheets, the forming of the notch, etc in a single continuous process, which is advantageous for mass production, not in a separate process for each step.

DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view of a straight-split pouch of the present invention.

FIG. 2 is an enlarged cross-sectional view of an opening position of a pouch in accordance with an exemplary embodiment of the present invention.

FIG. 3 is an enlarged cross-sectional view of an opening position of a pouch in accordance with another exemplary embodiment of the present invention.

FIG. 4 is a perspective view showing a state in which a pouch in accordance with the present invention is being torn.

FIG. 5 is a flowchart showing a process of manufacturing a pouch in accordance with the present invention.

FIG. 6 is a schematic diagram of an apparatus for manufacturing a sheet for a pouch in accordance with the present invention.

FIGS. 7 and 8 are a plan view and a side view of a shaping device for forming a cutting groove on a sheet in the apparatus of FIG. 6.


Description of Reference Numerals

	In the Pouch:
	1, 2: sheet	4: cutting line
	5: notch	10: surface protective layer
	20: reinforcing layer	25: base film

30: heat sealable resin layer

	In the Apparatus:
	100: first winding unit	200: adhesive applying unit
	202: adhesive reservoir	204: adhesive applying roller
	300: chamber

302, 304: chamber inlet and outlet

	400: second winding unit
	500: shaping device	502: shaping roller
	504: roller	506: cylinder
	508: linear guide	600: lamination unit
	800: heat seal	900: cutting unit

MODE FOR INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
Referring to FIGS. 1 to 3, a pouch in accordance with exemplary embodiments of the present invention will be first described. The pouch is a packing material for packaging a product which needs to be protected from moisture or oxygen for a long time. The pouch essentially comprises two synthetic resin sheets including a front sheet and a rear sheet and has a notch 5 corresponding to a tear starting point at an opening position and a cutting line 4 in which a plurality of cutting grooves 40 continuing in a straight line from the notch 5 are formed at regular intervals along the opening position.
In the present invention, each of the front sheet and rear sheets has a structure in which a surface protective layer 10 is stacked on a base film 25 comprising a reinforcing layer 20 and a heat sealable resin layer 30. The surface protective layer 10, the reinforcing layer 20, and the heat sealable resin layer 30 are bonded to each other with an adhesive layer interposed therebetween by lamination.
The surface protective layer 10 functions as a barrier for protecting the contents of the packaging from moisture penetration, oxygen permeation, etc. and the heat sealable resin layer 30 is to ensure hygiene of the contents of the packaging. Moreover, the reinforcing layer 20 provides properties such as rupture strength, heat resistance, cold resistance, etc. which are required for the pouch that serves as a packing material and, in particular, ensures easy cutting at a time when the tearing of the pouch starts.
A polyester film (hereinafter referred to as a PET film) having excellent transparency, heat resistance, high tension, dimensional stability, impermeability, moisture resistance, water resistance, chemical resistance, etc., which are suitable for packaging and metalizing, is useful as the surface protective layer 10. Moreover, a non-oriented film or polyethylene film (PE film), which has a uniform thickness and is a hygienic film widely used as a material for flexible packaging such as food packaging, etc., may be used as a material for the heat sealable resin layer 30.
For the reinforcing layer 20, a material comprising nylon only, which has excellent heat resistance, cold resistance, and tensile strength and is suitable to provide tearing directionality and easy cutting when the pouch is opened, may be used as in the exemplary embodiment of FIG. 2, or alternatively a synthetic film in which an aluminum thin plate is deposited on the surface of nylon may be used as in the exemplary embodiment of FIG. 3.
When the cutting grooves 40 are formed on the front and rear sheets comprising the above materials, it is preferred that the cutting grooves 40 be formed on the base film 25 formed by bonding the non-oriented film that forms the heat sealable resin layer 30 to the nylon film or nylon synthetic film that forms the reinforcing layer 20. In detail, it is preferred that the cutting grooves 40 be formed on one side of the reinforcing layer 20 of the base film 25 positioned in a direction that comes into contact with the surface protective layer 10.
The reason for this is that the PET film that constitutes the surface protective layer 10 may be damaged when surface treatment such as the formation of the cutting grooves 40 is performed on the sheet completed by bonding the surface protective layer 10, the reinforcing layer 20, and the heat sealable resin layer 30.
In other words, in the case of the PET film, silica and alumina are deposited on a film to prevent moisture and oxygen permeation so as to preserve the contents (mainly food or medicine) for a long time. Thus, when an external pressure such as tension, impact, etc. is applied to the PET film, like during the formation of the cutting grooves 40, the film formed of the silica and alumina is damaged, which reduces the water resistance and barrier performance, thus losing its function as a packing material.
Moreover, even when the cutting grooves 40 are formed in this manner for the above reasons, it is preferred that at least two cutting grooves 40 be formed vertically at regular intervals. The reason for this is that when the force that acts to tear the pouch is somewhat deviated from a cutting groove 40, from which the initial tearing starts, during the tearing of the pouch, another cutting groove 40 can maintain the cutting pattern in a nearly straight line. To this end, an appropriate interval between the cutting grooves 40 is 0.1 to 2 mm.
According to the above-described pouch of the present invention, with the formation of the cutting line 4, in which the plurality of cutting grooves 40 continuing in a straight line are formed at regular intervals along the opening position of the pouch, it is possible to ensure easy cutting even when the tearing direction is irregular due to the properties of the base film that constitutes the pouch, and it is possible to smoothly cut the pouch along the predetermined straight cutting line 4 at all times during cutting even when the force at a time when the cutting starts acts in a deviated direction as shown in FIG. 4.
Next, a method for manufacturing the pouch having the above-described configuration in accordance with an exemplary embodiment of the present invention will be described.
As shown in FIG. 5, the method for manufacturing the pouch comprises a total of six steps including a step of forming a base film, a step of applying an adhesive onto a surface protective layer and drying the resulting layer, a step of forming a cutting line, a step of bonding the base film and the surface protective layer, a step of sealing large area sheets, and a step of cutting the sealed large area sheets and forming a notch.
The first step is to form a base film 25 by bonding a reinforcing layer 20 and a heat sealable resin layer 30. Here, as mentioned above, a material comprising nylon only, which has excellent heat resistance and cold resistance and is suitable to provide tearing directionality and easy cutting when the pouch, or a synthetic film, in which an aluminum thin plate is deposited on the surface of nylon, is used for the reinforcing layer 20. Moreover, a non-oriented film or polyethylene film, which is very hygienic and widely used as a material for flexible packaging, is used as a material for the heat sealable resin layer 30.
In the above process, the bonding of the reinforcing layer 20 and the heat sealable resin layer 30 may be achieved by a lamination process that applies an adhesive onto the reinforcing layer 20 or the heat sealable resin layer 30, dries the resulting layer to form an adhesive layer 15, and passes the reinforcing layer 20 and the heat sealable resin layer 30, which are facing each other, through a press roller, thus forming an interlayer contact. However, any bonding method, which can bond the reinforcing layer 20 and the heat sealable resin layer 30 without damaging the layers, such as the use of a thermal bonding tape, can be used without being limited to a particular method.
Information about the contents (such as logo, image, recipe, etc.) is printed on the surface of the surface protective layer 10 which is to be boned to the base film 25 to form a large area sheet, and an adhesive is applied to the back side thereof. Then, the resulting surface protective layer 10 is hot-air dried in a dry chamber 300.
During the application of the adhesive, it is preferred that the back side of the surface protective layer 10 be allowed to move in contact with the surface of an adhesive applying roller 204, which is partially exposed to a reservoir 202 storing the adhesive, so as to be continuously applied with the adhesive. Moreover, during the drying of the adhesive, it is preferred that the surface protective layer 10 be allowed to continuously pass through a chamber 300, which has an inlet 302 and an outlet 304 and into which hot air is blown, so as to be dried.
The next step is to form a cutting line 4 by forming a plurality of straight cutting grooves 40 at regular intervals on the base film 25 formed in the above step. In this process, it is preferred that the cutting grooves 40 be continuously formed in appropriate positions of the base film 25, which will be the opening position of the pouch later, using a shaping device 500 having a structure as shown in FIGS. 7 and 8. Moreover, an appropriate interval between the cutting grooves 40 that forms the cutting line 4 is 0.1 to 2 mm.
The base film 25 and the surface protective layer 10, which are formed in the above steps are bonded to each other by a lamination process, thus forming large area front and rear sheets. In FIG. 6, reference numeral 720 denotes a winding roller on which a large area front sheet is wound, and reference numeral 740 denotes a winding roller on which a large area rear sheet is wound, the large area rear sheet being formed in the same process as described above.
The next step is to seal the two large area front and rear sheets in a size suitable for the formation of the pouch. In this process, the two large area front and rear sheets 1 and 2 are allowed to be transferred in contact with each other so as to be sealed in a section (which corresponds to the slanted line in the enlarged view of FIG. 6) suitable for the formation of the pouch by a typical heat seal 800.
Finally, the sealed large area sheets are cut into the sections and, at the same time, a notch 5 corresponding to a tear starting point is formed at the opening position of each pouch, thus completing the straight-split pouch in accordance with the exemplary embodiment of the present invention.
An apparatus for manufacturing the pouch used in the above-described processes will now be described in brief.
As shown in FIG. 6, the apparatus used to manufacture the straight-split pouch in accordance with the exemplary embodiment of the present invention comprises a first winding unit 100, a second winding unit 400, an adhesive applying unit 200, a chamber 300, a shaping device 500, a lamination unit 600, a heat seal 800, and a cutting unit 900.
The surface protective layer 10, on which the information about the contents of the pouch such as logo, image, recipe, etc. is printed, and the base film 25 comprising the reinforcing layer 20 and the heat sealable resin layer 30, which are bonded to each other, are wound on the first winging unit 100 and the second winding unit 400, respectively. The adhesive applying unit 200 serves to continuously apply an adhesive onto the back side of the surface protective layer 10 wound on the first winding unit 100.
The adhesive applying unit 200 comprises an adhesive applying roller 204, which is partially exposed to a reservoir 202 storing the adhesive such that the back side of the surface protective layer 10 moves in contact with the surface of the adhesive applying roller 204, which is exposed externally, and is continuously applied with the adhesive.
The chamber 300 is configured to dry the adhesive applied onto the back side of the surface protective layer 10 and has a structure in which an inlet and an outlet are provided and into which hot air for drying the adhesive can be uniformly blown over the entire chamber. Thus, even when the surface protective layer 10 whose back side is applied with the adhesive is continuously moved along the line, the moving object to be dried can be sufficiently dried in the chamber 300.
The shaping device 500 is a device for forming the cutting grooves 40, which is the core of the present invention, at the opening position of the pouch. As shown in FIGS. 7 and 8, the shaping device 500 comprises a shaping roller 502 having a shaping surface with a fine concave-convex pattern formed on the circumferential surface thereof and a roller 504 rotating in engagement with the shaping roller 502. The shaping roller 502 is moved forward and backward by a cylinder 506 and a linear guide 508 connected to the cylinder 506.
Accordingly, when the base film 25 is passed between the shaping roller 502 and the roller 504 rotating in engagement with the shaping roller 502, the cutting grooves 40, which have a cross-section of a concave-convex pattern and continue in the movement direction of the base film 25, can be formed on the base film 25 by the shaping surface of the concave-convex pattern on the surface of the shaping roller 502. Here, when considering the interval between the cutting grooves 40 formed on the based film 25, it is preferred that the width W of the concave-convex pattern formed on the shaping surface also be 0.1 to 2 mm.
The lamination unit 600 is a well-known technique that performs the bonding process in such a manner the surface protective layer 10 applied with the adhesive and the base film 25 having the cutting grooves 40 are passed between the two rollers rotating in close contact with each other so as to eliminate an air layer. The heat seal 800 has a structure in which several pairs of sealing bars, which are spaced vertically from each other or connected to each other, are arranged in a plurality of sections (not shown) suitable to form a plurality of pouches on the two large area sheets.
The cutting unit 900 includes a plurality of cutters (not labeled) having an arrangement suitable to cut the large area sheets into horizontal and vertical sizes and a punching (not shown) for forming the notch 5 corresponding to the tear starting point in each pouch. Reference numeral 650 denotes a cooling roller which is configured to cool the large area sheets comprising the surface protective layer 10 and the base film 25 which are bonded by the lamination unit 600.
According to the method and apparatus for manufacturing the pouch of the present invention, the forming, sealing, and cutting of the large area sheets, the forming of the notch, etc. are performed in a single continuous process, which is advantageous for mass production, not in a separate process for each step.
The invention has been described in detail with reference to preferred embodiments thereof. However, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A straight-split pouch for packaging a product which needs to be protected from moisture or oxygen for a long time, the pouch essentially comprising two synthetic resin sheets including a front sheet and a rear sheet and having a notch corresponding to a tear starting point at an opening position and a cutting line in which a plurality of cutting grooves continuing in a straight line from the notch are formed at regular intervals along the opening position,

wherein each the front sheet and the rear sheet has a structure in which a surface protective layer is stacked on a base film comprising a reinforcing layer and a heat sealable resin layer, and

wherein the cutting grooves are formed on one side of the reinforcing layer of the base film bonded to the surface protective layer.

2. The pouch of claim 1, wherein at least two cutting grooves are spaced vertically at regular intervals from each other.

3. The pouch of claim 1, wherein the interval between the cutting grooves is 0.1 to 2 mm.

4. The pouch of claim 1, wherein the surface protective layer, the reinforcing layer, and the heat sealable resin layer are formed of a polyester (PET) film, a nylon film, and a non-oriented or polyethylene (PE) film, respectively.

5. The pouch of claim 1, wherein the surface protective layer, the reinforcing layer, and the heat sealable resin layer are formed of a polyester (PET) film, a synthetic film in which aluminum is deposited on the surface of nylon, and a non-oriented or polyethylene (PE) film, respectively.

6. The pouch of claim 4, wherein the surface protective layer, the reinforcing layer, and the heat sealable resin layer are bonded to each other with an adhesive layer interposed therebetween by lamination.

7. A method for manufacturing a straight-split pouch, the method comprising:

(a) forming a base film comprising a reinforcing layer and a heat sealable resin layer;

(b) applying an adhesive onto a back side of the surface protective layer, whose front side is printed with information about the contents of the pouch, and drying the resulting layer;

(c) forming a cutting line by forming a plurality of straight cutting grooves at regular intervals on one side of the reinforcing layer of the base film which is to be bonded to the surface protective layer;

(d) forming large area front and rear sheets by bonding the surface protective layer onto reinforcing layer of the base film;

(e) sealing the two large area front and rear sheets into predetermined sections while transferring the large area sheets which are being in contact with each other; and

(f) cutting the sealed large area sheets into the sections and, at the same time, forming a notch corresponding to a tear starting point on each pouch.

8. The method of claim 7, wherein the application of the adhesive in step (b) is performed such a manner that the back side of the surface protective layer is moved in contact with the surface of an adhesive applying roller, which is partially exposed to a reservoir storing the adhesive, so as to be continuously applied with the adhesive.

9. The method of claim 7, wherein the drying of the adhesive in step (b) is performed in such a manner that the surface protective layer is continuously passed through a chamber, which has an inlet and an outlet and into which hot air is blown, so as to be dried.

10. The method of claim 7, wherein the cutting line in step (c) is formed by continuously passing the base film through a shaping device comprising a shaping roller having a shaping surface with a fine concave-convex pattern formed on the circumferential surface thereof and a roller rotating in engagement with the shaping roller.

11. The method of claim 10, wherein the width of the concave-convex pattern formed on the shaping roller is 0.1 to 2 mm.

12. An apparatus for manufacturing a straight-split pouch, the apparatus comprising:

a first winding unit on which a surface protective layer, whose front side is printed with information about the contents of the pouch, is wound;

an adhesive applying unit which is configured to continuously apply an adhesive onto a back side of the surface protective layer wound on the first winding unit;

a chamber which is configured to dry the adhesive applied onto the back side of the surface protective layer;

a second winding unit on which a base film comprising a reinforcing layer and a heat sealable resin layer is wound;

a shaping device which is configured to continuously form a plurality of straight cutting grooves at regular intervals on one side of the reinforcing layer of the base film;

a lamination unit which is configured to form a large area sheet by laminating the surface protective layer applied with the adhesive and the base film having the cutting grooves;

a heat seal which is configured to seal two large sheets transferred in contact with each other into predetermined sections; and

a cutting unit which is configured to cut the sealed large area sheets into the sections and, at the same time, form a notch corresponding to a tear starting point on each pouch.

13. The apparatus of claim 12, wherein the adhesive applying unit has a structure in which an adhesive applying roller is rotatably mounted and partially exposed to a reservoir storing the adhesive.

14. The apparatus of claim 12, wherein the chamber has a structure in which an inlet and an outlet, through which the surface protective layer whose back side is applied with the adhesive is continuously passed in a horizontal direction, are provided, and a plurality of hot-air blowing nozzles which blows hot air to dry the adhesive are spaced from each other.

15. The apparatus of claim 12, wherein the shaping device comprises a shaping roller having a shaping surface with a fine concave-convex pattern formed on the circumferential surface thereof and a roller rotating in engagement with the shaping roller, the shaping roller being moved forward and backward by a cylinder and a linear guide connected to the cylinder.

16. The apparatus of claim 15, wherein the width of the concave-convex pattern formed on the shaping roller is 0.1 to 2 mm.

17. The apparatus of claim 12, further comprising a cooling roller which is configured to cool the large area sheets, each comprising the surface protective layer and the base film which are bonded by the lamination unit.

18. The pouch of claim 5, wherein the surface protective layer, the reinforcing layer, and the heat sealable resin layer are bonded to each other with an adhesive layer interposed therebetween by lamination.