WO2015076635A1

WO2015076635A1 - Refrigerated or frozen food packaging bag having handle

Info

Publication number: WO2015076635A1
Application number: PCT/KR2014/011336
Authority: WO
Inventors: 명선녀
Original assignee: 주식회사 우성팩
Priority date: 2013-11-22
Filing date: 2014-11-24
Publication date: 2015-05-28
Also published as: CN106061853A; CN106061853B

Abstract

The present invention relates to a food packaging bag used for temporarily storing refrigerated or frozen food. In particular, in a state where a heat insulating sheet, for maintaining the heat insulation of the bag, is laminated, and in a state where a zipper is mounted for opening or closing of the bag, the present invention prevents a handle formed on the upper side of the zipper from being torn and prevents the zipper from being unfastened in the case of using the handle, thereby providing convenience in use. Also, the present invention provides easiness of manufacture when manufacturing the bag. In addition, due to the bottom surface of the bag being formed to be broadly spread, adhesive force is easily provided during the manufacture, the external appearance is excellent, and also a surface layer constituting a packaging pack is protected.

Description

Refrigerated or frozen food packaging bag with handle

The present invention relates to a food packaging bag for temporarily storing refrigerated or frozen food, and in particular, a handle formed on the upper side of the bag in a state where a zipper is mounted to open and close the bag in a state in which the heat insulating sheet for keeping the bag is laminated. It is to provide the ease of use by preventing the falling off and the gap when using the handle, and to provide ease of manufacture in manufacturing such a thing.

In addition, in forming the bag to spread out the bottom surface, to provide easy adhesive force during manufacturing, as well as to protect the surface layer constituting the packaging pack while excellent in appearance.

Generally, various foods that require refrigeration or freezing are deteriorated when exposed to room temperature, resulting in deterioration of freshness, or in the case of frozen foods, which are deteriorated and degraded in quality. Most of these foods are refrigerated or frozen. In the case of selling the packaging bag having insulation means is used.

Moreover, in recent years, the purchase form of food is mainly made in large marts or department stores, and when purchasing in such a place, it is often purchased in large quantities, but in the case of foods requiring heat insulation and cold storage such as ice cream, meat, fish, etc. Due to the longer time to take home after the food is exposed to room temperature at that time, there is a problem that the deterioration occurs, so a packaging bag having a separate cold storage function is essentially used.

In addition, the packaging bag having such a cold storage function is to be provided for the packaging is cheap and easy to store, yet the cold storage function is excellent, easy to carry and must be sealed.

Therefore, most of the automatic production of the synthetic resin film and the polyethylene foam film for thermal insulation cold storage is to be manufactured while laminating automatically using a winding roll.

In general, the structure of this is to use a PET film excellent in printability, heat resistance and tensile strength as well as the outer skin to have a variety of printing surface on the back side as needed, and then silver foil deposition on the back side, if necessary After the polyethylene foam film is laminated, the rear surface is made of PE film of a material harmless to the human body in consideration of the hygiene of waterproof or packaged food, and then the insulation sheet is folded. By bonding to form a border adhesive surface is to be formed in the form of a bag for packaging the inner space is formed.

However, the disadvantage of such a structure is that the floor cannot be formed in the unfolded state, so when packing a large one, the packaging efficiency is reduced and the packaged material is not adhered to the bottom surface of the packing pack. Of course, the packaging will be poor

Therefore, in recent years, a relatively large internal capacity as compared to a pack of the same size can be stored to hold a lot of food, as well as to be stored on the floor to provide for easy handling.

Therefore, the structure of this is that when folding the insulation sheet to join the edges of both sides folded to a W-shaped in a state in which a certain portion of the lower portion folded into a W-type, including a portion folded in a W-shaped to form a bonded border By cutting the outside of the part to produce a packaging bag that opens the bottom surface.

Therefore, when the packaging pack is unfolded, the bottom surface of the packaging bag is provided horizontally to increase the storage capacity of the bag, as well as to make the packaging bag upright.

However, the disadvantage of this is that when the lower portion is folded into the W-shape and the W-folded portion forms an inclined edge joint surface and then cuts outwards, the folded portion of the W-shaped portion is the first inclined joint surface and the second inclined joint surface. Before being used as separated, these are separated at the bottom of the packing pack by tattering and thus hurting the aesthetics, and at the same time, the parts separated by the first and second inclined joint surfaces are packed. The lower end is protruded forward, so that the first inclined joint surface and the second inclined joint surface is in the form of a sharp blade is a problem that the finger is cut by the careless care.

Therefore, in order to solve this problem, an attempt has been made to extend the portion directly folded downward with the portion forming the edge joint portion without inclining the portion folded in the W shape, but in this case, the portion folded in the W shape is joined to the first bonding surface and the second bonding portion. As the surfaces are folded in double, the PET films forming the surface layer face each other, and thus the adhesive is not formed by heat.

Therefore, in the invention filed by the applicant of the present application to solve this problem, the PE layer (adhesive layer, insulation layer, finishing layer) is formed so as to expose the inner side of the surface layer, that is, the part of the surface where the PET film faces each other, to be bonded to each other. After exposing), the PE is melted and bonded to each other, so that the above problems can be solved and the appearance can be kept beautiful.

However, since such manufacturing should be provided at a low cost, since it is continuously produced in an automatic line process, the parts that can be joined by perforations should be joined while being engaged at the correct position, and the joining should be made. Maintaining the correct position of the joint surface and the second joint surface is a very difficult problem in the actual lamination process due to the error of this plastic sheet in the automatic line process due to the nature of the plastic sheet is increased.

In addition, to store the food for freezing, refrigeration and storage in the inner space of the bag, and when the open upper portion of the inner space to be sealed, it is usually folded and bonded using a tape or the like to block the inner space from the outside to maintain the cooling function The problem with this is that if the adhesive is attached to the upper part by using a tape or the like, the gap is formed on the side and the bag is not completely sealed. will be.

Therefore, in recent years, it has been proposed to form a synthetic resin zipper for sealing on the inside of the opened upper portion of the packaging bag so that the packaging bag is completely sealed by such a zipper, but it is laminated for waterproofing constituting the insulation sheet. When the zipper is bonded to the PE film, the PE film is laminated for the hygiene as well as the waterproofing of the packaged food, so that the process of bonding the zipper is very difficult, and the insulation sheet itself is made of multiple layers of film. Polyethylene foam film is placed therebetween, and even though the zipper is bonded with a thin PE film corresponding to the inner surface of the insulating sheet, the PE film is laminated with the polyethylene foam film so that the bonding force between the zipper and the polyethylene foam film Stronger than the adhesive force with laminated PE film If you open and close the zipper on the PE film or polyethylene foam film is a problem that occurs.

In addition, when the handle is formed by forming an extended surface to the top of the zipper in such a lamination structure, the stretching or sagging occurs due to the load of the object packaged in the inner space.

In addition, an extension surface is formed in the opened upper portion of the packaging bag to adhere such a zipper, and the opening of the extension surface is generated. In this case, it causes inconvenience to use due to the extension surface that opens to the left and right when used as a handle.

Therefore, the present invention is to prevent the openings of the handles from being separated from each other while preventing the tearing or elongation of the handles by load in the state in which the handles are formed on the extension surface while preventing the zipper of the cold packaging bag from being broken.

In addition, it is possible to manufacture in a simple process by changing the structure of the packaging bag for cold storage means for preventing such a gap.

In addition, by folding the bottom surface of the packaging bag in the W-shape to bond the left and right sides by heat, it is possible to provide the ease and accuracy of the operation in the automated operation as well as to reinforce the PET film forming the surface layer.

To this end, the packaging bag of the present invention is folded into a surface layer, an adhesive layer, a heat insulating layer, a finishing layer to fold the laminated heat-insulating sheet to bond the two sides to form an opening to the upper side to form an edge adhesive surface while forming an edge adhesive surface of the packaging bag in the state On the inner side of the upper part, the female and male zippers formed of plastic are placed on the finishing layers facing each other to correspond to each other, and heat-bonded in a pressurized state by heating to a predetermined temperature. While forming a rectangular perforated part on the extended surface, the reinforcement film should be laminated only on the extended surface in order to improve the tensile strength of the handle when used as a handle. When manufacturing packaging bags with perforations exposing thermoplastic resin If this is so that the adhesion to each other made.

In addition, when the packaging bag is manufactured by manufacturing the packaging bag by heating the upper end of the extension surface where the reinforcing film is laminated and then providing the extension exposure surface, it is thermally bonded by thermoplastic PE film of the exposed exposure surface. The adhesion is made to each other to simply prevent the opening.

In addition, the PE film is melted on the surface of the PET film forming the surface layer of the packaging bag to spread the bottom surface and coated in a T-Die manner to protect the surface layer of the packaging pack while minimizing the use of raw materials. Of course, by folding the bottom surface of the packaging pack in the W-shape to bond both sides with heat, it is possible to manufacture in the form of simply spreading the bottom surface.

Therefore, the present invention is made of a packaging bag that can maintain the refrigerated state for a long time while preventing the tearing of the handle while preventing the opening of the handle is formed to provide ease of use while also providing ease of manufacture .

In addition, while the manufacturing process is made simple, the productivity is improved, but there is no defect of the product.

In addition, since the outer surface of the packaging pack prevents tattering and the outer surface forming the surface layer on which the printing surface is formed is made of only PET, it is possible to provide a product having variety by eliminating the problem that the sparkling is too strong and the softness falls. Due to the thin thickness of the packaging bag is easy to solve the problem that the damage occurs.

1 is a perspective view showing the structure of the packaging bag of the present invention.

Figure 2 is a state diagram of one embodiment laminated of the insulating sheet formed PE coating layer constituting the packaging bag of the present invention.

Figure 2a is a state diagram of one embodiment of another laminated state of the insulating sheet is formed PE coating layer constituting the packaging bag of the present invention.

Figure 3 is a state of manufacturing a packaging bag by the edge bonding surface of the present invention.

Figure 4 is an adhesive state of the manufactured packaging bag of the present invention.

Figure 5 is a perspective view of one embodiment for preventing the spread of the extended surface is formed handle of the packaging bag of the present invention.

Figure 6 is a perspective view of another embodiment for preventing the spread of the extended surface is formed handle of the packaging bag of the present invention.

Figure 7 is a perspective view showing the adhesive surface of the exposed extension surface in the state that the reinforcing film is laminated on the extension surface of the packaging bag of the present invention

Figure 8 is a perspective view of a state in which the adhesive surface is formed in the form of a dot in the state that the reinforcing film is laminated on the extension surface of the packaging bag of the present invention.

FIG. 9 is a perspective view of a state in which a gap is prevented in a state in which an adhesive surface of an exposed extension surface is bonded in a state in which a PE coating layer is not formed on a surface layer of the present invention; FIG.

The best form for the practice of the present invention is to fold the insulation sheet consisting of a continuous layer of the surface layer and the adhesive layer insulation layer and the finishing layer to form a border joint surface on both sides to form an inner space, the opening is formed in the upper side and the handle to the top In the packaging bag is formed additionally,

The surface layer is made of a PET film having excellent heat resistance, tensile strength, and transparency while the remaining adhesive layer, heat insulating layer, and finishing layer are made of PE series, and formed into a PE series, which is coupled to the finishing layers facing each other on the inside of the opening. Zipper is positioned and the zipper is heated and pressurized to the melting point of PE, and the heat insulation layer, the finishing layer and the zipper are melted with each other and heat bonded to the surface layer on which the adhesive layer is formed. A refrigerated or frozen food packaging bag having a handle that enables it.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, the packaging bag of the present invention, as shown in Figures 1 to 9 by folding the insulating sheet 100 to form a border joint surface 210 only on both sides to have an inner space while openings are formed in the upper side to form an opening. Forming the packaging bag 200 to be stored after the storage of refrigerated or frozen food through the packaging through, the laminated structure of the insulating sheet 100 is the outer surface to the inner surface layer 10 and the insulating layer 30 and finish It is made of a layer 40, the surface layer 10 and the heat insulating layer 30 is laminated by the adhesive layer 20 and to the exposed outer surface of the heat insulating layer 30 to prevent the moisture is absorbed into the heat insulating layer 30 The finishing layer 40 is laminated in order to prevent foreign substances from being buried or the heat insulating layer 30 is damaged.

In the present invention, the surface layer 10 is usually formed in a state in which the printing layer 11 is printed on the back side using a PET film formed of a thermosetting resin having excellent tensile strength, and printed in various patterns or colors, if necessary. If necessary, the light shielding layer 50 is formed by laminating a silver foil or silver foil by an adhesive layer so that the printed layer is easily seen.

In addition, the adhesive layer 20 for laminating the surface layer 10 and the heat insulating layer 30 is to coat the molten liquid on the PET film forming the surface layer 10 by a T-Die method. 30) is to be laminated by automatic supply by a winding roll using a polyethylene foam film foamed with a thermoplastic resin PE, the finishing layer 40 is to use HDPE film which is a thermoplastic resin harmless to the human body (40) is to be laminated by automatic feeding by the take-up roll.

Therefore, by folding the insulating sheet 100 having a predetermined area and length having such a laminated structure to form a border joint surface 210 by heat bonding only on both sides to form a packaging bag (bag) to the inner surface of the upper portion of the opening The inner surface of the finishing layer 40 is a thermoplastic resin-type PE-based molded female, the zipper 70 is coupled to each other facing each other to heat and pressurized at a constant temperature and pressure to the zipper 70 is a heat insulating layer 30 While melting the finishing layer 40 while melting to the adhesive layer 20 is integrated with the surface layer 10 to be thermally bonded.

Therefore, since the zipper 70 is closely connected to the surface layer 10 made of PET film, the polyethylene foam film or the finishing layer 40 is used to form the heat insulation layer 30 when the zipper 70 is opened and closed. It is designed to prevent tearing or bursting of HDPE film.

In addition, since the PET film, which is a thermosetting resin forming the surface layer 10, has excellent tensile strength and heat resistance, deformation by heat does not occur, and the adhesive layer 20, the heat insulation layer 30, and the finish layer 40 have a melting point than PET. Pressing while applying heat to match the melting temperature of the PE by using a PE series, a low thermoplastic resin, heat deformation occurs, and thus the heat insulating layer 30 and the finishing layer 40 in the laminated state is melted zipper Including the 70 is to be bonded to each other.

At this time, the surface layer 10 and the adhesive layer 20 is made of a PET film and PE, respectively, because the PET film and PE are very inferior adhesive strength between each other by melting the PE on the PET film and coated with a tee die method to the adhesive layer 20 By forming), firm fixation is possible.

In addition, the upper surface to which the zipper 70 is attached to the heat insulating sheet 100 is formed an extension surface 110, and when the rectangular perforated portion 220 is formed on the extension surface 110 to open and close the zipper 70 While allowing the perforations 220 to be used as a handle is to be easily carried.

In this case, the punching unit 220 used as a handle extends 110 to form the punching unit 220 in order to solve the problem that the tearing of the punching unit 220 occurs when a large load is generated in the packing pack. The inner surface of the thermosetting resin reinforcement film 60 to be laminated with the finishing layer 40, such a reinforcement film 60 is to use a PET film or nylon excellent in the tensile force in the present invention.

* However, in this case, the extension surface 110 of the perforated part 220 used as the handle is opened to the left and right to extend the surface in the present invention in order to prevent the inconvenience caused by the use of the handle by such a gap when used. When the reinforcement film 60 formed on the 110 forms a hole 211 into the inside of the portion where the edge bonding surface 210 to be bonded while implementing the packaging bag is formed inside the reinforcement film 60 The PE-based finishing layer 40 is exposed through the holes 211, and the edge bonding surface formed on the extension surface 110 even when the reinforcing film 60, which is a thermosetting resin, is formed by the finishing layer 40. As the 210 is bonded, the extension surface 110 will be prevented from spreading from side to side.

In addition, in the state that the reinforcement film 60 is laminated on the inner surface of the extension surface 110 as described above so that the upper end of the extension surface 110 is further exposed to the upper side to the exposed surface of the extension surface (110a) Since the exposed extension surface 110a is formed using a PE film forming the finishing layer 40, left and right edges of the exposed extension surface 110a formed at the upper end of the extension surface are formed by the thermal adhesive property of the PE film. While being bonded by heat, the gap is prevented by being bonded by the adhesive surface 111.

Therefore, the perforated part 220 for use as a handle is capable of excellent reinforcement without tearing due to tensile strength by the surface layer 10 and the reinforcing film 60, and may be formed as an exposed extension surface 110a. In this case, the difficulty of aligning by the hole 211 is eliminated, thereby providing ease of manufacture.

On the other hand, when the light shielding layer 50 is formed between the surface layer 10 and the heat insulating layer 30 as shown in FIG. 7, it is possible to prevent external light from penetrating into the bag. 50) is preferably formed by vacuum deposition of an aluminum material.

In addition, in order to implement color on the insulation sheet 100 or to display advertisements or promotional text, the printing layer 11 is formed on the back surface of the PET film forming the surface layer 10 to be exposed to the surface of the insulation sheet 100. It is preferable to form, and more preferably in the step before forming the light shielding layer 50 on the surface layer 10 by printing an advertisement, a promotional phrase on the back surface of the surface layer 10, such as gravure printing on the light shielding layer 50 The sharpness will be secured.

Therefore, since the advertisement and promotional text are printed on the back surface of the PET film forming the surface layer 10 having a relatively high transparency and tensile strength, it is possible to prevent the print content from being damaged by friction.

In addition, when laminating the reinforcement film 60 to the extended surface 110, the perforated portion 220 is used as a handle in consideration of the fact that the surface layer 10 and the reinforcement film 60 is the same material as a whole. In this case, too hard to be inconvenient to carry, so as to be in the dot type (112) to be able to maintain the flexibility as well as soft and solid lamination is to be possible.

In addition, the PE series (adhesive layer, insulation layer, finishing layer) is formed by forming holes 211 or exposed extension surface 110a only in the reinforcement film 60 in the edge bonding surface 210 of the extension surface 110 to eliminate the gap. After exposing to the whole and applying pressure by applying heat, the PE series is completely or partially melted together so that the extension surface 110 formed with the handle is firmly bonded to each other and is easily opened by a strong external force. Will be solved.

In addition, the surface of the PET film 10 forming the surface layer of the insulating sheet 100 by melting the PE to form a PE coating layer 1 by the T-Die method while removing the flexibility and unnecessary gloss of the surface layer 10 It is to provide easy manufacturability for the opening of the bottom surface.

At this time, the PE coating layer 1 is coated with a PET film forming the surface layer 10 of the thermal insulation sheet 100 because the coating thickness is coated with a coating thickness of 10 ~ 30㎛ if possible and its properties are melted at 105 ~ 110 ℃. In one side of the roller is provided with a cooling line while being cooled while being coated with a uniform thickness while being rolled.

If the coating thickness is less than 10㎛ occurs a problem that the correct adhesion is not made during lamination, if the coating is more than 30㎛ occurs that the phenomenon occurs.

As such, when the heat-insulating sheet 100 on which the PE coating layer 1 is formed is folded in half and the bottom of the heat-insulating sheet 100 is half-heated, the left and right sides of the heat-insulating sheet 100 folded in half are heated in half. At the same time as the folded portion (b) to form a border bonding surface 210 while bonding to produce a packaging bag 200, the bottom surface is wide spread by one bonding operation, while the bottom surface is wide spread, without tattering and accurate The adhesion is simply made.

In addition, by coating the PE coating layer (1) to melt the PE in a T-Die method, not a film, it is possible to reduce the raw materials as well as adhesion without the need for a separate adhesive medium.

That is, when the insulation sheet 100 is folded in half to form a border adhesive surface 210 for the implementation of the packaging bag 200, the surfaces facing each other are made of PE because of the same materials It is simply glued by heat without using an adhesive.

In addition, when forming an extended surface 110 for the handle on the top of the packaging pack 200 by the formation of such a PE coating layer (1) in the case of carrying in a state packed with a heavy object in the packaging pack 200 Even when a load is generated by a heavy object, the handle will be stretched or broken.

In addition, by forming a light shielding layer 50 by the deposition of silver foil on the back surface of the PET film forming the surface layer 10 to enable the cooling of the packaged goods by the external temperature, such a light shielding layer 50 of silver foil ) To laminate the foam film for insulation.

Therefore, even when the light shielding layer 50 is formed by the deposition of silver foil for cold storage, the manufacturing is performed by adhesion in the same manner as the packing pack for thermal insulation.

Claims

In the packaging bag is formed by folding the insulating sheet consisting of a continuous layer of the surface layer and the adhesive layer heat insulating layer and the finishing layer to form a border bonding surface on both sides to form an inner space, the opening is formed on the upper side, the handle is formed on the upper side,

The surface layer is made of a PET film having excellent heat resistance, tensile strength, and transparency while the remaining adhesive layer, heat insulating layer, and finishing layer are made of PE series, and formed into a PE series, which is coupled to the finishing layers facing each other on the inside of the opening. Zipper is positioned and the zipper is heated and pressurized to the melting point of PE, and the heat insulation layer, the finishing layer and the zipper are melted with each other and heat bonded to the surface layer on which the adhesive layer is formed. Refrigerated or frozen food packaging bags with handles
The method of claim 1,

The upper part of the zipper is formed to form a perforated part to form a handle by forming an extension surface when forming a perforated part to form a handle,

Bag for refrigerating or frozen food packaging having a handle that the reinforcing film is laminated with the extension surface to prevent tearing of the perforated part
The method of claim 2,

The reinforcing film is laminated on the extension surface to form a hole in the reinforcing film forming the edge bonding surface of both sides of the reinforcement film is laminated in order to prevent the extension surface is open to both sides in the form of the perforated part forming a handle. Refrigerated or frozen food packaging bags with handles that are heat-bonded by PE
The method according to claim 2 or 3,

Bag for refrigerating or frozen food packaging having a handle that is laminated in a dot form when the reinforcing film is laminated for the convenience of portability while the reinforcement film is overlaid on the extended surface on which the perforated part is formed.
The method of claim 2,

In the state where the reinforcing film is laminated on the extension surface to form an exposed extension surface,

Bag for refrigerated or frozen food packaging having a handle to prevent the open surface is bonded to the edge of the exposed extension surface to form a perforated part for implementing the handle
The method of claim 1,

PET film forming the surface layer of the packaging bag to form a PE coating layer to fold the heat insulating sheet formed with the PE coating layer in half, the bottom of the folded in a W-type and heat the left and right sides of the heat-insulated sheet folded in half to W-type The folded part (a) is bonded together with the half folded part (b) at the same time to form a rim joint surface, thereby producing a packaging bag with a single bonding operation, while the bottom surface of the bag is spread out widely, and the adhesive is easily and precisely made. Refrigerated or frozen food packaging bags with handles
The method of claim 6,

The PE coating layer (1) is a refrigerated or frozen food packaging bag having a handle to melt the PE to be coated in a T-Die method
The method according to claim 6 or 7,

The PE coating layer is coated with a coating thickness of 10 ~ 30㎛ and its characteristics are melted at 105 ~ 110 ℃ rolled with a cooling line on one side of the roller in the state coated on the PET film to form the surface layer of the insulating sheet Refrigerated or frozen food packaging bags with handles to cool the coated state while maintaining a uniform thickness