KR101922658B1 - Wrap-film Unit and Method for Wrapping Food using the same - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging film unit for sealing and packaging food such as rice, including kimchi, and a food packaging method using the same.
The packaging film unit according to the present invention is characterized in that the packaging film unit comprises an outer packaging film formed with a c-cut portion at one end in the longitudinal direction, an inner packaging film formed with a tear line along the longitudinal direction at an intermediate portion thereof, An adhesive tape for adhering the outer wrapping film and the inner wrapping film to each other by an adhesive interposed between the outer wrapping film and the outer wrapping film, a label label attached to the outer surface of the outer wrapping film while covering the cut- And a stick disposed in the interior of the adhesive strip; The cut-out portion is cut-out from one end in the longitudinal direction of the outer wrapping film to the other end in the direction of the other end, and the label label sheet is a non-adhesive portion in which one end (upper end) side of the outer wrapping film is not bonded. Using such a packaging film unit, the food is wrapped and heat sealed to form a sealed portion, and then the outer side of the sealed portion is cut to complete the food packaging.
According to the packaging film unit and the food packaging method using the packaging film unit of the present invention, it is possible to cover the cut portion of the outer skin with the trademark label without any separate cover, to prevent the cut-out portion of the outer skin from spreading and to easily cut the outer skin and the inner skin together with the label label There is an effect of facilitating the separation of rice and kim.

Description

TECHNICAL FIELD The present invention relates to a wrapping film unit and a food packaging method using the wrapping film unit.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging film unit and a food packaging method using the packaging film unit. More particularly, the present invention relates to a packaging film unit for packaging food such as rice and packaging and a food packaging method using the same.

The packaging film unit is a packaging film unit including roasting as a packaging film unit for kimbap or rice balls as disclosed in Japanese Laid-Open Patent Publication No. 2013-533181.

Conventionally, as shown in Fig. 1, the packaging film unit for kimbap or rice balls is formed by inserting Kim (K) between two substantially rectangular packaging films 10 and 20, And joining them along the edges to form the seal portions 10A and 20A.

The outer packaging film 10 is provided with a cut band 11 for easily separating the outer packaging film 10 and an open portion 12 which is not sealed at both ends of the cut band 11. The wrapping film 20 is provided with an overlapping portion 21 which is divided and overlapped in half and an opening portion 220 which is not sealed at both ends of the binding portion 21. The wrapping film of this type is called a rice R ), The wrapping of rice balls is completed by folding and folding.

In order to eat the rice balls packed in the packaging film unit, the cut-off band 11 provided in the longitudinal direction is pulled out at the center of the outer packaging film 10 to tear off the outer packaging film 10. Next, the cut packaging film is pulled to both sides to pull out the packaging film by pulling it to the left and right sides centering on the vertical central portion of the packaging film 20, leaving only the kimchi K and rice R. You can wrap the rice (R) with the left kimchi (K).

However, the conventional packaging film unit thus configured has a problem in that the air is introduced into the inside through the opening portion, so that the steam is damp and the rice or the rice balls are easily sealed when the rice or the rice ball is packed. That is, since the shelf life (shelf life) of kim and rice or rice balls is short, the loss rate of the product is high.

In addition, even if sealing with a conventional packaging film unit is completed, if the rice or the rice ball is heated by a microwave oven to heat the rice bowl, the internal pressure of the package increases due to water vapor generated from the food (rice or rice ball) Food may be scattered due to rupture. As a result, there is a problem that the scattered food may contaminate the inside of the microwave oven, and may damage the human body, such as an image.

In order to solve such a problem, Korean Patent Registration No. 10-1570835 filed and filed by the present applicant is disclosed. Korean Patent No. 10-1570835 can easily and completely seal the food such as rice to prevent deterioration of the kim and rice and prevent rupture of the package when the packaged food is heated in the microwave oven, A packaging film unit which can be easily opened and a food packaging method using the same, which can easily remove the kimchi through the tear line, the cutting band and the cover and the chamfer of the kim, to be.

On the other hand, when the frozen (triangular) kimbap is heated in a microwave oven to be cooked, if the adhesive is heated for 2 to 3 minutes, the adhesive banded with the conventional adhesive is melted due to heating and the sheath and cut band are separated. The outer shell is not torn and only the cut-off band is separated.

Japanese Patent Publication No. 2013-533181 (Date of Publication: Aug. 23, 2013) Korean Registered Patent No. 10-1570835 (Registered on November 16, 2015)

The present invention solves the problems of the conventional packaging film unit and further improves the object of the present invention. It is an object of the present invention to facilitate the sealing of food such as rice, thereby preventing deterioration of the kim and rice, The present invention is to provide a packaging film unit that covers a cut portion of an outer skin with a label label paper without a cut out portion of the outer skin, facilitates cutting of the outer skin and the inner skin together with a label label, and facilitates separation of rice and kim.

Another object of the present invention is to provide a food packaging method using a packaging film unit which can prevent the packaging body from rupturing and easily open the packaging body when warming the food packaged in the packaging film unit into the microwave oven.

In order to achieve the above object, the packaging film unit according to the present invention comprises: an outer packaging film formed with a c-cut portion at one end in the longitudinal direction; an inner packaging film having a tear line formed along the longitudinal direction thereof; An adhesive tape for adhering the outer packaging film and the inner wrapping film to each other by an adhesive interposed between the films and the seal portion formed along the edge, a label label attached to the outer surface of the outer packaging film while covering the c-cut portion, And a seal disposed between the film and the wrapper film and disposed inside the adhesive strip; The labeling sheet has a non-adhesive portion at one side (upper end) of the outer wrapping film, and a chamfer at one side edge of the outer packaging film And the chamfer of the other corner is tapered in such a manner that the tips thereof come into contact with each other and are sharpened.

Both ends of the tear line are terminated inside the adhesive band.

The inner packaging film is an easy film that is naturally opened at a certain temperature or pressure, and the easy film is a PP easy film extruded by mixing an epoxy adhesive with an adhesive.

A food packaging method using a packaging film unit according to the present invention comprises the steps of arranging food in the middle of the packaging film of a packaging film body having an outer packaging film formed with a cut-out portion, folding the packaging film in half to wrap the food, A heat sealing step of forming a sealing part by heat sealing along the periphery of the packaging film by heat sealing means, a cutting step of cutting off the outside of the sealing part of the packaging film, a step of covering the c- And a labeling step.

A second packaging step of wrapping the completed package through the cutting step or the labeling and attaching step with the outer flexible film and heat sealing the periphery of the outer flexible film to form the outer sealed part can be additionally performed.

According to the packaging film unit and the food packaging method using the packaging film unit according to the present invention, it is possible to easily and completely seal the food such as rice to prevent deterioration of the kim and rice, So that the cut-out portion of the outer skin can be prevented from spreading, the cut-out of the outer skin and the inner skin can be facilitated together with the label level paper, and the separation of the rice and the kim can be facilitated.

In addition, there is an effect that, when the food packaged in the packaging film unit is warmed up in the microwave oven, rupture of the package can be prevented and the package can be opened easily. Particularly, in order to solve the problem that when the freezing (triangular) kimbap is heated by a microwave oven, the adhesive dissolves due to the heat and the cutting band and the sheath are separated from each other, This makes it possible to eliminate the work of attaching the cut band to the outer skin with the adhesive when the wrapping paper is being worked.

1 is an exploded perspective view showing a conventional packaging film unit.
2 is an exploded perspective view showing a packaging film unit according to an embodiment of the present invention.
3 is a sectional view of a packaging film unit according to an embodiment of the present invention.
FIG. 4 is a bottom view showing a state in which a label label is attached to the bottom of the outer packaging film in FIG. 2;
5 (a) to 5 (d) are process drawings showing a food packaging method using a packaging film unit according to an embodiment of the present invention.
Figs. 6 (a) to 6 (c) are views showing the state of opening the package B of Fig. 5 in detail.
Figs. 7 (a) to 7 (c) are process drawings showing an example of packaging the package of Fig. 5 in a second order.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated.

3 is a cross-sectional view of a packaging film unit according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of a packaging film unit according to an embodiment of the present invention, Fig. The packaging film unit 100 according to the embodiment of the present invention includes an outer packaging film 110, a packaging film 120, an adhesive band 130, a label label 140, 150).

The outer packaging film 110 is a film having a cut-out portion 111 at one end in the longitudinal direction and a second tear line 112 are formed. The cut-out portion 111 is formed in a shape of a square shape from one end to the other end in the longitudinal direction of the outer packaging film 110. The outer packaging film 110 may be a PP (polypropylene) film or a PET (polyethylene terephthalate) film depending on the material of the inner packaging film 120. The thickness of the outer packaging film 110 is preferably 20 to 30 占 퐉, and preferably 25 占 퐉.

A sealing portion S1 is formed along the edge of the outer packaging film 110 with the adhesive band 130 interposed therebetween. The cut portion 111 and the first tier line 112 are defined inside the seal portion S1 so that the seal film 130 is sealed when the packaging film 100 is sealed with the adhesive tape 130 . The cut-out portion 111 is sealed by a label label 140 adhered to the outer surface of the outer wrapping film 110 while covering the cut-out portion 111. The cut-out portion 111 is a portion to be pulled together with the label label 140 when the outer packaging film 110 is opened.

The packaging film 120 is a film in which a second tear line 121 is formed along the longitudinal direction. Both ends of the tear line 120 are terminated inside the adhesive band 130 so as to be sealed when being sealed. The packaging film 120 is an easy film that is naturally opened at a temperature or pressure higher than a certain temperature. The inner wrapping film 120 may be a film for general food or a film made of the same material as the outer wrapping film 110. It is also possible to use a carbon application film to prevent environmental hormones harmful to the human body desirable.

As the easy film, a PP easy film extruded by mixing an isocyanate adhesive with a PP base material, or a PET easy film extruded by mixing an eyelash adhesive with a PET base is used. The outer packaging film 110 is a polyethylene terephthalate (PET) film when a PP oil film is used. In the case where a PET oil film is used, the outer packaging film 110 is a PET (polyethylene terephthalate) film. The PP material has a characteristic of tearing in a straight line. The thickness of the packaging film 120 is preferably 20 to 30 占 퐉, and preferably 25 占 퐉. A sealing portion S2 is formed along the edge of the packaging film 120 with the adhesive band 130 interposed therebetween.

PP easy film or PET easy film is a film which maintains a constant thermal bonding strength irrespective of the thermal bonding temperature, and maintains stable quality because there is no change in physical properties such as thermal adhesiveness and surface characteristics with time. The thermal bonding temperature of the PP easy film is suitably 160 to 170 ° C, and the thermal bonding strength is 1000 to 1500 g / mm 2. The thermal bonding temperature of PET PET film is suitably from 140 to 150 DEG C, and the thermal bonding strength is 1000 to 1500 g / mm < 2 >. The use temperature of the PP easy film and the PET easy film is preferably -20 to 100 占 폚.

PB-1 (polybutene-1) may be used as the ejipil adhesive, but LUXF-1302 (trade name), which is a main raw material of the carbon application film, is used in the present invention. When such a PP or PET film is used to heat-seal (heat seal) the package, the interface is easily torn due to the incompatibility of the adhesive and PP or PET, .

The adhesive tape 130 is bonded to the outer packaging film 110 and the inner packaging film 120 by an adhesive interposed between the outer packaging film 110 and the inner packaging film 120, (120). As the adhesive, a known isocyanate adhesive or an imine adhesive can be used. The thickness of the adhesive band 130 is preferably about 5 mu m.

The label label paper 140 is a merchandise paper which is adhered to the outer surface of the outer packaging film 110 while covering the c-cut portion 110 and one side end (upper end: see Fig. 5) of the outer packaging film 110 is bonded (The pentagonal in the present embodiment) label sheet constituting the non-adhered portion 140a, and the remainder is the adhered portion 140b to be adhered to the outer packaging film 110. [ The label label 140 adhered while covering the cut-out portion 110 does not require a separate cover for holding the outer wrapping film 110 by hand or for covering the cut-out portion. The label label paper 140 adhered to the outer packaging film 110 by an adhesive has an effect of pulling the outer envelope portion opened by the c-cut portion 111 in the outer packaging film 110. The label label paper 140 is formed so as to be easily torn along the longitudinal direction of the outer packaging film 110 when the label label paper 140 is held and pulled.

The non-adhered portion 140a of the label label paper 140 makes it easier to hold the outer wrapping film 110 when it is opened. The unpacked portion 140a of the label label 140 is pulled by pulling the outer wrapping film 110 to tear the outer wrapping film 110 together with the cut portion 111 in a linear direction . The PP material has a straight-line tearing property, and when it is opened, it tears naturally to the end portion of the outer packaging film 110 on the opposite side. The outer packaging film 110 or the inner packaging film 120 made of a PP material or a PET material may be formed in a longitudinal direction so as to be torn in a straight line direction.

The rods 150 are inserted between the outer wrapping film 110 and the inner wrapping film 120 and disposed inside the adhesive strip 130. The edges of the rods 150 are cut into chamfer shapes (C1, C2), so that when the packaging film 100 is sealed, the rods are not caught so that the rods do not interfere with the sealing. At this time, it is preferable that the chamfer (C1) at one corner be smaller than the chamfer (C2) at the other corner within a limit not to interfere with sealing, so that the size of the chambers is preferably as large as possible. However, as shown in Fig. 2, it is more preferable that the chamfer C2 at the other corner is formed to have a pointed end by abutting the ends.

According to the packaging film unit according to the present invention thus configured, it is possible to easily and completely seal the food such as rice, including the steaming, to prevent the deterioration of the kim and rice, and the frozen food such as hot bar, It can be applied to packaging of various foods such as instant food, convenience food, and the like.

5 (a) to 5 (d) are process drawings showing a food packaging method using a packaging film unit according to an embodiment of the present invention. As shown in the figure, the food packaging method using the packaging film unit 100 according to the present invention includes a food wrapping step, a heat sealing step, a cutting step, and a labeling step.

5A, the food R is wrapped in the middle of the wrapping film 120 of the packaging film unit 100 so that the food R such as rice or rice balls is placed, (100) is folded in half to wrap food.

As shown in FIG. 5 (b), the heat sealing step is a step of sealing a single (single row) or double (double row) sheet of the packaging sheet 100 along the periphery of the packaging film 100 wrapped with the food R And the seal portion H is formed. When the heat is sealed in two, it is possible to completely block the outside air. The temperature of thermal fusion (thermal bonding) is suitably 160 to 170 ° C for PP easy film, and 140 to 150 ° C for PET easy film.

As shown in Fig. 5C, the cutting step is a step of cutting off the outer side of the double (two rows) sealing portion H of the packaging film 100 along the perforated line L and removing it.

In the labeling step, the label label 140 is attached by covering the cut-out portion 111 of the outer packaging film 110. The label label sheet 140 may be attached when forming the packaging film unit or the packaging film body. 5 shows an example in which the label level paper 140 is attached when the packaging film unit or the packaging film body is formed.

5 (d) shows the state of the completed package B in which the food is wrapped in such a step. The opening of the package B is naturally torn in a linear direction to the end of the outer packaging film 110 together with the c-cut portion 111 when the non-adhesive portion 140a of the label label paper 140 is pulled, The outer wrapping film 110 and the inner wrapping film 120 can be removed by pulling the film 110 sideways so that the inner wrapping film 120 is torn. (R) and Kim (150) are attached. Therefore, the food R can be easily wrapped with the kimchi 150 and eaten.

Figs. 6 (a) to 6 (c) are views showing the state of opening the package B of Fig. 5 in detail. As shown in the figure, when the label label 140 is pulled forward by holding the non-adhered portion 140a in the state shown in Fig. 6 (a), the rib formed on the label label paper 140 and the two lines The band BA and the band space SP are formed along the first tier line 112 as shown in Fig. 6 (c) The adhesive portions 140b on both sides of the band space SP remain bonded to the outer packaging film.

On the other hand, when the food R needs to be warmed, when the food is put in the microwave oven and heated, when the temperature and pressure inside the package B become a certain value or more, the inner wrapping film 120, (Heat seal) portion of the package B, so that rapid breakage of the package B is prevented. At this time, the opening of the package B along the rupture portion of the easy film (inner packaging film) can be made easier.

Figs. 7 (a) to 7 (c) are process drawings showing an example of packaging the package of Fig. 4 in a second order. As shown in FIG. 4, after the cutting step of FIG. 4, the outer packaging film 200 is wrapped around the outer packaging film 200 according to the shape of the package B, followed by heat sealing.

5 (c)), the package B is wrapped with the outer flexible film 200 (see FIG. 7 (b)), and the outer flexible film 200 (See Fig. 7 (c)) in which the outer sealing portion 220 is formed in one row (or two rows) by heat-sealing with known hot-melt welding means along the periphery. In this case, the wrapping film 120 of the package B may not be an easy film.

As with the inner packaging film 120, it is preferred that the outer flexible film 200 be a PP outer flexible film extruded by mixing an adhesive resin with PP resin, or a PET outer flexible film extruded by mixing an adhesive resin to a PET substrate Do. The thickness of the outer flexible film 200 is preferably 20 to 30 占 퐉, and preferably 25 占 퐉.

PP Outer Easy Film or PET Outer Easy Film is a film that maintains a constant thermal bonding strength regardless of the thermal bonding temperature and maintains stable quality because there is no change in physical properties such as thermal adhesion and surface characteristics with time. The thermal bonding temperature of the PP outer film is suitably from 160 to 170 DEG C, and the heat bonding strength is 1000 to 1500 g / mm < 2 >. The thermal bonding temperature of the PET external adhesive film is suitably from 140 to 150 ° C, and the heat bonding strength is 1000 to 1500 g / mm 2. The use temperature of the PP outer film and PET outer film is preferably -20 to 100 ° C.

PB-1 (polybutene-1) may be used as the ejipil adhesive, but LUXF-1302 (trade name), which is a main raw material of the carbon application film, is used in the present invention. When such an external easy film is used to heat-seal (heat seal) the package, the adhesive is easily torn due to the non-compatibility of the adhesive and the PP when the heat is applied to the heat-sealed portion.

As shown in FIG. 7 (a), the outer flexible film 200 is formed in an octagonal shape by forming a cutout 210 cut out at a corner of a square. A package B packed in a primary packaging is disposed in the middle of the outer flexible film 200 and the outer flexible film 200 is folded in half to wrap the package in the middle (see Fig. 7 (b)).

According to the food packaging method using the packaging film unit according to the present invention configured as described above, food such as rice can be easily and completely sealed with a single or double seal to block outside air and prevent the infiltration of harmful viruses, It can prevent the degeneration of Kim and rice, so you can increase the shelf life and you can eat stable food. At this time, there is the effect of facilitating the cutting of the outer skin and the inner skin together with the trademark level paper, and the separation of the rice and the kim of the rice paper easily.

And, when the food packaged in the packaging film unit is heated in the microwave oven, the food can be prevented from sudden rupture of the single or double-wrapped package, and the package can be opened easily.

The food packaging method of the present invention can be used for various food packaging methods such as frozen foods such as hot bar, buns and hats, ready-to-eat foods, and cooked foods at convenience stores.

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of the present invention in order to facilitate the understanding of the present invention and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

100: Packaging film unit
110: outer packaging film 111: c-cut portion
112: First tier line 120: Inner packaging film
121: Second tier line 130: Adhesive strip
140: Brand label sheet 140a: Non-
140b: Adhesive part 150: Kim
C1, C2: chamfer S1, S2, H: seal part
B: Package R: Food
BA: band SP: band space
200: Outer Easy Film 210:

Claims (5)

An outer packaging film 110 formed with a c-shaped cut-out portion 111 at one longitudinal end thereof and a first tear line 112 extending to the c-cut portion 111,
A wrapping film 120 having a second tear line 121 formed along the longitudinal direction thereof,
The outer wrapping film 110 and the inner wrapping film 120 may be separated by an adhesive interposed between the outer wrapping film 110 and the inner wrapping film 120, An adhesive tape 130 for adhering the adhesive tape 130,
A label label 140 adhered to the outer surface of the outer packaging film 110 while covering the c-cut portion 111,
(150) interposed between the outer packaging film (110) and the inner packaging film (120) and disposed inside the adhesive band (130);
The cut-out portion 111 is formed in a shape of a double-sided shape from one end to the other end in the longitudinal direction of the outer packaging film 110,
The first tear line 112 is formed in two rows along the longitudinal direction of the outer packaging film 110 at the flange of the c-shaped cutout 111 and is defined inside the seal portion S1,
The second tear line 121 is formed along the longitudinal direction in the middle of the wrapping film 120 and ends of the second tear line 121 are terminated inside the adhesive band 130,
The label label paper 140 forms a non-adhered portion 140a to which one side of the outer packaging film 110 is not adhered and is formed along the longitudinal direction of the outer packaging film 110,
The chamfered portion C1 of one side edge of the jig 150 is made smaller than the chamfer C2 of the other side edge and the chamfered portion C2 of the other corner is cut off Wherein the packaging film unit is provided with a packaging film unit. delete The method according to claim 1,
Wherein the inner packaging film (120) is an easy film that is naturally opened at a temperature or pressure higher than a predetermined temperature or pressure, and the easy film is a PP easy film extruded by mixing an adhesive resin with an adhesive. A food packaging method using the packaging film unit according to claim 1 or 3,
A step of wrapping the food by placing the food in the middle of the wrapping film 120 of the wrapping film body having the outer wrapping film formed with the cut-out portion and folding the wrapping film in half to form a wrapping film; A heat sealing step of forming a seal portion (H) by heat sealing; a cutting step of cutting and removing the outside of the seal portion (H) of the packaging film; a labeling step of covering the above- And attaching the packaging film unit. The method of claim 4,
After wrapping the finished package B with the outer release film 200 through the cutting step or the labeling step, the outer seal part 220 is formed by heat sealing along the periphery of the outer release film 200 And a second packaging step is further performed on the packaging film unit.

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