KR101951120B1 - Zipper bag with improved contents and durability and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a zipper bag with improved capacity and durability and a manufacturing method thereof and, more specifically, to a zipper bag with improved capacity and durability and a manufacturing method thereof, wherein a first film and a second film of the zipper bag are manufactured in multiple layers to store food or objects to improve durability and thermal resistance. Moreover, a zipper of the zipper bag is doubly coupled to improve a sealing effect, and a partial shape of a sealed portion has a diagonal shape instead of an arc shape of a conventional zipper bag to improve capacity.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a zipper bag having improved contents and durability,

The present invention relates to a zipper bag with improved contents and durability and a method of manufacturing the zippered bag. More specifically, the present invention relates to a zippered bag for storing foods and articles, which has improved durability and heat resistance, The zipper bag of the zipper bag is doubly fastened to improve the sealing effect and the zipper bag having an improved content and durability with improved content of the zippered bag having a shape of a part of the sealed part different from that of the conventional zippered bag, .

Generally, zipper bags are made of vinyl material and are used to store food to maintain freshness. Such a zipper bag is formed by a zipper, and it is easy to remove or use the stored food as much as necessary, and it can be sealed by a zipper. Therefore, it is used for refrigeration or freezing storage of food.

On the other hand, in recent years, as the nuclear family becomes more severe, the need to make more food every day has become less. Due to these influences, it is a tendency to increase the number of households that eat food such as rice, side dish, soup and stew, store each meal for each zipper bag, store it frozen, and thaw as many times as necessary according to the number of people to eat.

Recently, there have been more and more cases of storing and selling food in a zipper bag. There is an increasing tendency to sell fresh vegetables in zipper bags and sell them, or store them in zipper bags to thaw or boil frozen foods.

Problems may arise in such a zipper bag, since the food may be harmful to the human body because it is in direct contact with the zipper bag, and when the food is frozen, the zipper bag is broken and the food may be contaminated with the damaged portion. In addition, when food is stored in a zipper bag and frozen, the food and the zipper bag are bonded to each other and do not fall off easily.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a zippered bag having improved contents and durability and capable of expanding the internal space in which food and beverage are stored.

Korean Registered Patent Publication (B1) No. 10-0792607 (Registered Date: Jan. 2, 2008)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

Disclosure of the Invention The present invention is intended to provide a zipperback film having a plurality of layers so as to have durability against volume expansion upon freezing of food, heat resistance against high temperatures when food is thawed, and not harmful to human body.

Further, in the present invention, a part of the sealed portion of the zipper bag is formed in an oblique shape, so that the receiving portion is spaced apart from the zippered bag when the food is stored.

In addition, the present invention is intended to make a part of the sealed portion of the zipper bag have a sawtooth shape so that the frozen food can be easily detached from the zipper bag.

Further, the present invention is intended to form a structure in which the zipper of the zipper bag can be double-sealed.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a zipper bag having improved contents and durability,

In a preferred embodiment of the present invention, in a zipper bag for accommodating contents, a storage portion in which a sealing portion is formed along an outer circumferential surface of the first film and the second film in contact with each other to store the contents, And a receiving part formed on the other side of the storing part, wherein the first film and the second film are composed of at least two or more layers.

Also, in a preferred embodiment of the present invention, the first film and the second film are made of low density polyethylene (LDPE), high density polyethylene (HDPE), linear low density polyethylene (LLDPE), stretched polypropylene (OPP) (CPP), and nylon (Nylon).

Also, in a preferred embodiment of the present invention, the low density polyethylene (LDPE) is located on the inner surface of the storage portion, and the nylon is located on the outer surface of the storage portion.

Also, in a preferred embodiment of the present invention, the thickness of the low density polyethylene (LDPE) is 90 to 120 탆, and the thickness of the nylon is 5 to 25 탆.

Further, in a preferred embodiment of the present invention, the sealing portion further includes a zipper having a 'C' protruding portion facing and being alternately disposed when the first film and the second film are adhered to each other.

Further, in a preferred embodiment of the present invention, the receiving portion is formed by separating the first film and the second film from each other to form a bottom surface.

Further, in a preferred embodiment of the present invention, a part of the sealing portion is formed to include at least one of an oblique shape and a round sawtooth shape.

Further, in a preferred embodiment of the present invention, the oblique shape is formed so that the diameter of the storage portion is widened from the receiving portion toward the closed portion.

According to a preferred embodiment of the present invention, there is provided a method of manufacturing a zipper bag for accommodating contents, comprising the steps of: preparing a film by thermally adhering low density polyethylene (LDPE) and nylon to form a single film; A film cutting step of cutting the film into a set width and a length, placing the film on the inner surface of the low density polyethylene (LDPE), folding the tape in three stages, A step of thermally adhering to the film such that protruded portions of the protrusions are alternately arranged facing each other, and thermally adhering along the outer circumferential surface of the film, wherein a portion of the three- Forming step.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, there is provided a zipper bag having improved contents and durability,

It has durability against volume expanding when food is frozen, has heat resistance against high temperature when food is thawed, and is not harmful to human body.

In addition, the sealing portion of the zippered bag may be formed in a diagonal shape so that when the food is stored, the receiving portion is spaced apart from the zippered bag.

Further, in the present invention, a part of the sealed portion of the zipper bag has a round sawtooth shape, so that the frozen food can be easily detached from the zipper bag.

In addition, the present invention has a structure in which the zipper of the zipper bag can be double-sealed so that the freshness of stored food can be maintained for a long time.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view schematically showing the structure of a zipper bag with improved contents and durability of the present invention. Fig.
Fig. 2 is a schematic view showing the internal configuration of the first film and the second film used in the zipper bag with improved contents and durability according to the present invention.
Fig. 3 is a schematic view of a sealing portion of a zipper bag having improved contents and durability according to the present invention.
Fig. 4 is a side view of a schematic configuration of a zipper bag having improved contents and durability according to the present invention. Fig.
Fig. 5 is a bottom view of a schematic configuration of a zipper bag having improved contents and durability according to the present invention as viewed from the bottom. Fig.
6 is a flowchart of a zipper bag manufacturing method with improved contents and durability according to the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described in detail below. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. To fully disclose the scope of the invention to a person skilled in the art, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers and the like for describing the embodiments of the present invention are merely exemplary and the present invention is not limited thereto. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Where the terms "comprises," "having," "consisting of," and the like are used in this specification, other portions may be added as long as "only" is not used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'above', 'below', or 'next to' Quot; directly " or " direct " is not used, one or more other portions may be located between the two portions.

In the case of a description of a time relationship, for example, if a temporal relationship is described by 'after', 'after', 'after', 'before', etc., Quot; direct " is not used and is not continuous.

Also, the first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

The 'X-axis direction', the 'Y-axis direction', and the 'Z-axis direction' should not be construed solely by the geometric relationship in which the relation between them is perpendicular to each other. It may mean having a wider directionality.

It should also be understood that the term " at least one " includes all possible combinations from one or more related items. For example, the meaning of 'at least one of the first item, the second item and the third item' means not only the first item, the second item or the third item, but also the second item, the second item and the third item, May refer to any combination of items that may be presented from more than one.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other, partially or wholly, technically various interlocking and driving, and that the embodiments may be practiced independently of each other, It is possible.

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

1 is a perspective view schematically showing the structure of a zipper bag 50 with improved contents and durability according to the present invention.

Referring to FIG. 1, the structure of the zipper bag 50 with improved contents and durability is a zipper bag for accommodating contents, in which the first film 100a and the second film 100b are in contact with each other, A sealing part 200 formed on one side of the storage part 150 and a receiving part 300 formed on the other side of the storage part 150 And the first film 100a and the second film 100b are composed of at least two or more layers.

On the other hand, the memo part 400 may be formed on the zipper bag 50 with improved contents and durability. Information on the contents stored in the zipper bag 50 with improved contents and durability or other information can be written using a general pen.

A hooking hole 280 may be formed on the upper end of the sealing part 200. When the zipper bag 50 having improved contents and durability is too cold or hot, the chopsticks or the like can be inserted into the hook holes 280 and lifted.

In addition, grooves 270a and 270b may be formed in the upper end of the sealing part 200. [ If the upper end of the zipper bag 50 having improved contents and durability is sealed by thermal bonding, the sealing portion 200 can be opened by cutting along the grooves 270a and b. Since the grooves 270a and 270b are located above the zipper 250, it is of course possible to close the grooves 270a and 250b again by using the zipper 250 after the opening.

Referring to FIG. 1, the sealing portion 120 may be formed by bonding the first film 100a and the second film 100b together along the outer circumferential surface thereof.

It is preferable that the sealing part 120 is thermally adhered to the sealing part 120. At this time, a part of the sealing part 120 is formed to include at least one of an oblique shape and a round sawtooth shape, And the diameter of the storage part 150 is enlarged toward the sealing part 200. [

If the sealing part 120 is made of the oblique sealing part 120a so that the diameter of the storage part 150 is widened from the receiving part 300 toward the sealing part 200, It is possible to store a larger amount of contents than a zipper bag manufactured in an arc shape.

Further, if a part of the sealing portion 120 is made of the round sawtooth type sealing portion 120b, the surface area of the contents stored in the storage portion 150 is increased. Accordingly, it is advantageous for thawing the frozen food, and it is advantageous that the frozen food is released from the zipper bag 50 whose content and durability are improved.

On the other hand, the zipper bag 50 with improved contents and durability can be rounded corners 310 to form rounded corners 310.

When the both ends of the receiving part 300 are in the tip shape, when the contents are stored and stood in the storage part 150, the frictional force is concentrated on the tip-shaped part and the first film 100a and the second film 100b are distanced from each other.

However, when both ends of the receiving part 300 form rounded corners 310, when the contents are stored in the storage part 150 and are standing, the first and second films 100a, The concentrated friction force is dispersed so that the first film 100a and the second film 100b are more easily opened.

Therefore, the bottom surface 320 shown in FIG. 5 can be easily seated on the floor, and the zipper bag 50 having improved contents and durability can maintain stable standing.

In addition, it is possible to anticipate the effect of preventing injuries that may occur due to the advanced shape. Accordingly, it is preferable that not only both ends of the receiving part 300 but also both ends of the sealing part 200 form rounded corners 310. [

FIG. 2 is a schematic view showing the internal structure of the first film 100a and the second film 100b used in the zipper bag 50 with improved contents and durability according to the present invention.

Referring to FIG. 2, the first film 100a and the second film 100b used in the zipper bag 50 having improved contents and durability are made of low density polyethylene (LDPE), high density polyethylene (HDPE), linear low density polyethylene (LLDPE) , At least one of stretched polypropylene (OPP), unleaded polypropylene (CPP), and nylon.

The low density polyethylene (LDPE) is located on the inner surface of the storage unit 150, and the nylon is located on the outer surface of the storage unit 150.

The first film 100a and the second film 100b may be formed of a material selected from the group consisting of low density polyethylene (LDPE), high density polyethylene (HDPE), linear low density polyethylene (LLDPE), stretched polypropylene (OPP), unoriented polypropylene (Nylon). The outer layer 110 and the inner layer 112 may be formed, and the adhesive layer 111 may be interposed between the outer layer 110 and the inner layer 112 and thermally compressed.

Particularly, the first film 100a and the second film 100b made of a plurality of layers using the low density polyethylene (LDPE) and the nylon are excellent in impact resistance, heat resistance, flexibility, transparency, chemical resistance, water resistance, Cold resistance, abrasion resistance, pinhole resistance, and low oxygen permeability.

Accordingly, the first film 100a and the second film 100b made of the plurality of layers can lower the oxygen permeability and can be advantageous in maintaining the freshness of the contents stored in the storage part 150, It is possible to increase the tensile strength and to prevent tearing due to the volume expansion of the contents stored in the storage part 150 during freezing.

In addition, the first film 100a and the second film 100b made of the above-mentioned plural layers can withstand -20 to -25 占 폚 during freezing, and can be optimized for freezing storage of an ordinary refrigerator, It can also be used in microwave ovens.

When the thickness of the low density polyethylene (LDPE) is less than 90 占 퐉 and the thickness of the nylon is less than 5 占 퐉, the volume of the contents stored in the storage part 150 during external impact or freezing Tearing may occur due to expansion.

Therefore, the thickness of the low density polyethylene (LDPE) used for the first film 100a and the second film 100b may be 90 to 120 占 퐉 and the thickness of the nylon may be 5 to 25 占 퐉 .

FIG. 3 is a schematic view of the sealing part 200 of the zipper bag 50 with improved contents and durability according to the present invention.

The sealing part 200 further includes zippers 250a and 250b, which are alternately arranged with the 'C' protruding parts facing each other when they are bonded to the first film 100a and the second film 100b, respectively And the zippers 250a, b are adhered to the sealing portion 200.

Referring to FIG. 3, the zipper 250a and the zipper 250b are alternately arranged in such a manner that the 'C' protruding portions are opposed to each other.

When this structure is formed, the lower portion of the 'C' -shaped protruding portion of the zipper 250a can be fitted into the 'U' -shaped depressed portion of the facing zipper 250b, On the contrary, the upper part of the 'C' shaped protruding part of the zipper 250b can be fitted to the 'U' shaped depressed part of the facing zipper 250a. The fitting according to this structure has the effect of double bonding.

This is because the conventional zipper has a concavo-convex shape so that the zipper having a different shape, that is, one zipper has a depressed shape and the other zipper has a protruding shape, Can be improved.

In addition, since only the zipper 250a, b having the same shape, that is, the U-shape is formed, it is possible to fabricate zipper having different shapes (for example, , And a zipper having a concavo-convex shape), so that the production cost can be reduced as compared with a zipper bag using the same.

FIG. 4 is a side view of the zipper bag 50 with improved contents and durability according to an embodiment of the present invention. FIG. 5 is a side view of the zippered bag 50 with improved contents and durability according to the present invention. It is the bottom surface.

4 and 5, the receiving part 300 is characterized in that the first film 100a and the second film 100b are separated from each other to form a bottom surface 320. [

When the contents are stored in the storage unit 150, the zipper bag 50 having improved contents and durability has a shape of the bottom surface 320 that is close to a quadrangle, and even if a liquid storage is stored in the zipper bag 50 having improved contents and durability Safe standing can be maintained.

On the other hand, the sealing portion 120 of the receiving portion 300 is formed with the oblique sealing portion 120a. The diagonal seal part 120a is formed so that the diameter of the storage part 150 from the bottom surface 320 is widened.

Accordingly, the inner space of the storage part 150 can be formed wider than the case of sealing the arc shape, and the bottom surface 320 can be formed in a shape close to a quadrangle, It is possible to maintain a safe standing.

6 is a flowchart of a method of manufacturing the zipper bag 50 with improved contents and durability according to the present invention.

Referring to FIG. 6, in the method of manufacturing a zipper bag for accommodating contents, a film making step (S10) of forming a single film by thermally adhering low density polyethylene (LDPE) and nylon, A step of cutting the film in a lengthwise direction of the film, cutting the film into a plurality of lengths, cutting the film into a plurality of lengths, (S30) for thermally adhering the protruding portions of the protrusions to each other so as to be alternately arranged, and thermally adhering along the outer circumferential surface of the film, wherein a part of the portions folded in three stages are heat- (S40).

The film making step S10 is a step of forming a single film by thermally adhering low density polyethylene (LDPE) and nylon to form an outer appearance of the zipper bag 50 having improved contents and durability, , The film having flexibility, transparency, chemical resistance, water resistance, cold resistance, abrasion resistance, pinhole property and low oxygen permeability can be produced.

The film cutting step S20 cuts the film into predetermined widths and lengths to determine the size of the zipper bag 50 with improved contents and durability.

In the sealing step forming step S30, the film is disposed so that the portion made of the low density polyethylene (LDPE) is disposed on the inner surface, and the zipper having the 'C' shape is folded in the three- The inner and outer surfaces of the zipper bag 50 having improved contents and durability are determined by thermally adhering the protruded portions to the film so as to be alternately arranged.

At this time, depending on the predetermined width and length, the folding lengths in the three stages may vary. For example, when the zipper back 50 with improved contents and durability is standing, it may be preferable to fold the entire length in the up and down direction to 1/4 to 1/6 length, but the present invention is not limited thereto. When such a length is formed, it is possible to form the bottom surface capable of maintaining a safe standing of the zipper bag 50 having improved contents and durability when the folded portions in the three stages are spaced apart to form a bottom surface.

In addition, when the zipper having the 'C' shape is arranged alternately with the 'C' protruding portions facing each other, the lower portion of the 'C' Shaped portion of the zipper, and the upper portion of the 'C' -shaped protruding portion of the opposed zipper is arranged to be engaged with the recessed portion of the zipper of the zipper, Quot; shaped " shaped depressed portion.

When the zipper including the 'C' shape is adhered to the film in such an arrangement, when the zipper including the 'C' shape is coupled to each other, the double bond effect can be obtained.

The storage unit formation step S40 is a step of thermally adhering a part of the folded portion in the third step in an oblique shape and the inner surface of the zipper bag 50 having improved contents and durability is expanded, So that a stable standing can be maintained.

When the zipper bag (50) with improved contents and durability is standing, the diagonal shape is formed to be inclined at an angle of 45 占 from the length of 1/4 or 1/6 length to the entire length in the vertical direction However, the present invention is not limited thereto.

The method may further include a step of thermally adhering a portion of the third folded portion to the outer circumferential surface in a round sawtooth shape except for the portion to be thermally adhered in the oblique line shape.

In addition, the method of manufacturing the zipper back 50 with improved contents and durability may include the steps of forming the grooves 270a, b, forming the hook holes 280, forming the rounded corners 310, 400), and the like.

Although the embodiments of the present invention have been described in detail, the present invention is not necessarily limited to these embodiments, and various modifications may be made without departing from the spirit of the present invention.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

The scope of protection of the present invention should be construed according to the claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the present invention.

50: Zippered back with improved content and durability
100a: first film 100b: second film
110: outer layer 111: adhesive
112: Inner layer 120: Seal
120a: diagonal shape sealing part 120b: round sawtooth shape sealing part
150: storage part 200: sealing part
250a, b: zipper 270a, b: groove
280: Hook hole 300:
310: rounded corner 320: bottom face
400: memo part

Claims (9)

delete delete delete delete delete delete delete delete A method of manufacturing a zipper bag for accommodating contents,
A film forming step in which low density polyethylene (LDPE) and nylon are thermally adhered to each other to form a single film;
A film cutting step in which the film is cut to a predetermined width and length;
The film is disposed such that the portion made of the low density polyethylene (LDPE) is disposed on the inner surface, and a zipper having a 'C' shape in a state of being folded in three stages is disposed alternately with the 'C' Forming a sealing part to be thermally adhered to the film; And
A part of the folded part in the third step is thermally adhered in an oblique shape and a part in contact with the outer circumferential surface is thermally adhered in a round sawtooth shape except for the part thermally adhered in an oblique shape, Forming a storage portion;
A hole forming step in which a hook hole is formed on an upper end of the closed portion;
A groove forming step of forming a groove shape on an upper end of the closed portion;
A round corner forming step in which both ends of the closed portion are rounded; And
And a memo part forming step of forming a memo part on the outer surface of the film.

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