WO2021091091A1 - Blocking resin having multilayer structure and method for manufacturing same - Google Patents

Abstract

The present invention relates to a technique for enabling the manufacture of a resin, which is used in producing a blocking article and due to the inclusion of a multilayer structure, can be manufactured to have an excellent oxygen-blocking property and improved processability at low costs. In addition, the blocking resin having a multilayer structure according to the present invention is provided as a melt blend resin obtained through extrusion by controlling a volume ratio or a viscosity ratio of polyolefin, a blocking resin, and a compatibilizer. The blocking resin having a multilayer structure according to the present invention has the effect of providing a resin that, due to an excellent oxygen-blocking property and improved processability, can be manufactured at low costs.

Description

Barrier resin having a multilayer structure and its manufacturing method

The present invention relates to a resin used in manufacturing a barrier article, including a multilayer structure, excellent oxygen barrier properties, improved processability, and manufacturing at low cost. The barrier resin having a multilayer structure according to the present invention is provided as a melt blend resin by adjusting a volume ratio, a viscosity ratio, and the like of a polyolefin, a barrier resin, and a compatibilizer.

Ethylene Vinyl Alcohol (EVOH), one of the representative barrier resins, is a copolymer of ethylene and vinyl alcohol. It has excellent processability and has a hydroxy (-OH) group in the molecule. As it exists, it has strong hydrogen bonding between molecules, so the oxygen permeability is very low. In general, the oxygen permeability of polyethylene is 60,000cc/m ² .day or more, and the oxygen permeability of ethylene vinyl alcohol is 0.1 to 80cc/m ² .day. In addition, ethylene vinyl alcohol (EVOH) is a product that is more expensive than polyvinylidenechlolide (PVdC), but it is inexpensive compared to transparent deposition barrier products, has excellent processability, and can be recycled, leading the barrier resin market. However, since ethylene vinyl alcohol (EVOH) weakens hydrogen bonds in the presence of moisture, the oxygen barrier properties are further weakened and moisture permeability increases, and thus, polyethylene (PE) and multilayer films with low moisture permeability are used in the industry. The structure of the multilayer film is provided in a five-layer structure, and in more detail, it is provided in a structure of polyethylene (PE)/adhesive resin/ethylene vinyl alcohol layer (EVOH)/adhesive resin/polyethylene (PE). The EVOH molecular structure included in the alcohol layer (EVOH) is the same as in Formula 1.

[Formula 1]

In general, the five-layered film may include a polyethylene layer as an inner layer and an outer layer, an ethylene vinyl alcohol layer as an intermediate layer, and an adhesive layer including an adhesive resin on both sides of the intermediate layer. Accordingly, moisture and odors can be blocked in the inner layer and the outer layer, and oxygen, carbon dioxide, freshness, etc. can be blocked in the middle layer. That is, in a multilayer film including a polyethylene (PE) layer and an ethylene vinyl alcohol (EVOH) layer, the polyethylene layer functions as a moisture barrier layer, and the ethylene vinyl alcohol layer functions as an oxygen barrier layer. At this time, due to the characteristics of EVOH and multilayer processes, it is a high-cost process structure and needs to be improved, which can be solved by applying a barrier resin having a multilayer structure. A barrier resin having a multi-layered structure is excellent in both oxygen and moisture barrier properties, and it is possible to improve processability.

On the other hand, in the case of manufacturing a multilayer film having a multilayer structure, it exhibits superior gas barrier properties compared to the existing miscible blend resin monolayer film.In this case, even if the same material and the same amount of resin are used, the series model (multilayer structure) ) And miscible blend model (matrix/domain structure). For example, when the transmittance of material A is 1 and the transmittance of material B is 0.01, the transmittance of the series model always tends to be lower than that of the miscible blend model. Here, it can be seen that the miscible blend model has a matrix/domain structure and the series model has a layer structure. The transmittance of the miscible blend model follows Equation 1 below, and the transmittance of the series model follows Equation 2.

Eventually, even if the same material and resin of the same content are used, the transmittance changes according to the difference in morphology, and the transmittance changes according to the layer thickness. In the present invention, the film is processed with a blend resin to control the transmittance. The morphology of the poem film was completed after research to create a product having a layered structure.

[Prior technical literature]

[Patent Literature]

(Patent Document 1) Korean Patent Registration No. 10-1002050 (2007.11.29)

It is an object of the present invention to solve all of the above-described problems.

It is an object of the present invention to provide a resin that is excellent in oxygen barrier properties and at the same time has improved processability and can be manufactured at low cost.

In order to achieve the object of the present invention as described above and to realize the characteristic effects of the present invention to be described later, the characteristic configuration of the present invention is as follows.

According to the present invention, a barrier resin is included in a polyolefin resin matrix, and the barrier resin is a barrier resin having a multilayer structure including any one or more selected from a continuous phase (matrix) and a dispersed phase (domain). Resin is provided.

In particular, it is characterized in that it has a layer morphology by including a barrier resin in the same ratio in the polyolefin resin matrix. In particular, the barrier resin may be present in the same ratio in the polyolefin resin matrix, and in this case, the effect of the transmittance according to the morphology may be efficiently provided.

According to the present invention, there is provided a barrier article comprising the barrier resin and polyolefin having the multilayer structure.

According to the present invention, with respect to 100 parts by weight of a polyolefin matrix resin, 30 to 250 parts by weight of a barrier resin, 0.5 to 30 parts by weight of a compatibilizer, and having a multilayer structure manufactured by a melt blending method A method for producing a barrier resin is provided.

The barrier resin having a multilayer structure according to the present invention has excellent oxygen barrier properties and improved processability, thereby providing a resin that can be manufactured at low cost.

In particular, if the resin according to the present invention is provided, it is possible to provide a multilayer film having a conventional 5-layer structure as a multilayer film or a monolayer film having a 3-layer structure without an adhesive layer when manufacturing a film containing a resin, so that processability can be greatly improved have.

1 shows a resin including a barrier resin dispersed phase (domain) in a polyolefin resin continuous phase (matrix).

FIG. 2 shows a resin included in a continuous phase (matrix) or a dispersed phase (domain) of a polyolefin resin in the form of a layer.

Hereinafter, the configuration and operation of the present invention will be described in more detail through preferred embodiments of the present invention. However, this has been presented as a preferred example of the present invention and cannot be construed as limiting the present invention in any sense.

Contents not described herein can be sufficiently technically inferred by those skilled in this technical field, and thus description thereof will be omitted.

<Production Example>

Manufacturing example 1: Preparation of resin

1 MI (Melt Index) of LLDPE 50%, EVOH-44% (EVOH ethylene contents) 50%, containing a compatibilizer 1 phr, a resin having a Viscosity Ratio of 0.5 was prepared using a twin screw extruder.

To prepare the blend resin, a twin screw extruder (27mmΦ) of Leistritz was used, and the processing temperature C1/C2/C3/C4/C5/C6/C7/C8/C9/A= 65/170/ It was prepared under 180/190/200/200/210/210/210/200°C, screw speed 200-250 rpm, and feeding 8-9kg/h standard conditions.

Manufacturing example 2: Preparation of resin

1 MI LLDPE 50%, EVOH-29% 50%, containing 1 phr of compatibilizer, and was prepared in the same manner as in Preparation Example 1 except that the Viscosity Ratio 1.1.

Manufacturing example 3: Preparation of resin

1 MI of LLDPE 55%, EVOH-29% 45%, containing 1 phr of compatibilizer, and was prepared in the same manner as in Preparation Example 1 except that the Viscosity Ratio 1.1.

Manufacturing example 4: Preparation of resin

1 MI of LLDPE 70%, EVOH-44% 30%, containing 1 phr of compatibilizer, and was prepared in the same manner as in Preparation Example 1 except that the Viscosity Ratio is 0.5.

Manufacturing example 5: Preparation of resin

3 MI LLDPE 50%, EVOH-29% 50%, containing 1 phr of compatibilizer, and was prepared in the same manner as in Preparation Example 1 except that the Viscosity Ratio 2.7.

Manufacturing example 6: Preparation of resin

A resin containing 1 MI of LLDPE 50%, EVOH-29% 50%, and 1 phr of a compatibilizer, and a Viscosity Ratio of 2.7 was blended using Banbury Kneader.

<Example>

Example One: Barrier properties Production of film

Using the resin according to Preparation Example 1, a layer blown barrier film was prepared. In this case, the 3-layer blown film extruder is a 3-layer blown film extruder from Killon (inner and outer layer 30mmΦ, middle layer 45mmΦ screw, 75mmΦ die), inner and outer layers C1/C2/C3/C4/A =170/180/210 /220/220℃ screw speed 50rpm, middle layer C1/C2/C3/C4/A/D1/D2/D3 =170/180/190/210/210/220/220/200℃ BUR 2 at screw speed 10rpm, A 100 μm thick film was prepared.

Example 2: Barrier properties Production of film

It was prepared in the same manner as in Example 1, except that the resin according to Preparation Example 1 was used.

Example 3: Barrier properties Production of film

It was prepared in the same manner as in Example 1, except that the resin according to Preparation Example 3 was used.

Comparative example One: Barrier properties Production of film

It was prepared in the same manner as in Example 1, except that the resin according to Preparation Example 4 was used.

Comparative example 2: Barrier properties Production of film

It was prepared in the same manner as in Example 1, except that the resin according to Preparation Example 5 was used.

Comparative example 3: Barrier properties Production of film

It was prepared in the same manner as in Example 1, except that the resin according to Preparation Example 6 was used.

<Experimental Example>

Experimental Example: Measurement of oxygen permeability

The oxygen permeability of the films according to Examples 1 to 3 and Comparative Examples 1 to 3 was measured. Measurement conditions are 23.0°C and 65% RH. In the case of the measuring device, OX-TRAN 2/22L, an oxygen permeability measuring device manufactured by Mocon, was used. When measuring the oxygen permeability, the test gas was measured in oxygen, the carrier gas was a mixed gas (nitrogen + hydrogen), and a temperature of 20 to 23°C and a relative humidity of 0 to 65%.

	Blend composition and manufacturing method	Oxygen permeability (cc/m².day)
Example 1	1MI LLDPE 50%, EVOH-44% 50%, compatibilizer 1phr, Viscosity Ratio 0.5	2.8
Example 2	1MI LLDPE 50%, EVOH-29% 50%, compatibilizer 1phr, Viscosity Ratio 1.1	1.1
Example 3	1MI LLDPE 55%, EVOH-29% 45%, compatibilizer 1phr, Viscosity Ratio 1.1	0.9
Comparative Example 1	1MI LLDPE 70%, EVOH-44% 30%, compatibilizer 1phr, Viscosity Ratio 0.5	14.2
Comparative Example 2	3MI LLDPE 50%, EVOH-29% 50%, compatibilizer 1phr, Viscosity Ratio 2.7	131.8
Comparative Example 3	1MI LLDPE 55%, EVOH-29% 45%, compatibilizer 1phr, Viscosity Ratio 1.1 ※ Blend manufacturing using Banbury Kneader	120.1

As shown in Table 1, in the case of including the barrier resin according to the present invention, it can be confirmed that oxygen barrier is very excellent in light of a remarkably low oxygen permeability value.

Therefore, the barrier resin having a multilayer structure according to the present invention can be manufactured at low cost as it is manufactured by a melt blending method by adjusting volume ratio, viscosity ratio, etc., and processability is improved. It provides the effect of facilitating application in the processing field.

In particular, when the resin according to the present invention is provided, when manufacturing a film containing a resin, the existing 5-layer multilayer film can be provided as a 3-layer multilayer film or monolayer film without an adhesive layer, so that processability can be greatly improved. .

In the above, the present invention has been described by specific matters such as specific elements and limited embodiments and drawings, but this is provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , Anyone having ordinary knowledge in the technical field to which the present invention pertains can make various modifications and variations from these descriptions.

Therefore, the spirit of the present invention is limited to the above-described embodiments and should not be defined, and all modifications that are equally or equivalent to the claims as well as the claims to be described later fall within the scope of the spirit of the present invention. I would say.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed description of the present invention described below refers to the accompanying drawings, which illustrate specific embodiments in which the present invention may be practiced. These embodiments are described in detail sufficient to enable a person skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different from each other, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention in relation to one embodiment. In addition, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description to be described below is not intended to be taken in a limiting sense, and the scope of the present invention, if appropriately described, is limited only by the appended claims, along with all ranges equivalent to those claimed by the claims. Like reference numerals in the drawings refer to the same or similar functions over several aspects.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to enable those of ordinary skill in the art to easily implement the present invention.

According to an embodiment of the present invention, a multilayer structure comprising a barrier resin in a polyolefin resin matrix, and the barrier resin comprises at least one selected from a continuous phase (matrix) and a dispersed phase (domain). A barrier resin having a is provided.

According to an embodiment of the present invention, a barrier resin dispersed phase (domain) may be included in a polyolefin resin matrix. This is illustrated in FIG. 1. Referring to FIG. 1, a dispersed phase (domain) may exist in a polyolefin resin matrix, and the dispersed phase is also expressed as a droplet or a disk.

According to an embodiment of the present invention, the barrier resin may include a continuous phase (matrix) or a dispersed phase (domain) in the polyolefin resin continuous phase (matrix). This is illustrated in FIG. 2. Referring to FIG. 2, a barrier resin is included in a polyolefin resin matrix in a continuous phase or a dispersed phase, and is provided in a layer form. In more detail, when the barrier resin is included in the same ratio in the polyolefin resin matrix, the barrier resin may be provided in the form of a layer. In addition, when the barrier resin is included in a smaller proportion than that of the polyolefin resin matrix, the barrier resin may be provided in the form of a layer in a domain.

According to an embodiment of the present invention, it is characterized in that it has a layer morphology by including a barrier resin in the same ratio in the polyolefin resin matrix. Preferably, the continuous polyolefin resin matrix includes the same ratio of the barrier resin matrix to be provided in the form of a layer. When the polyolefin resin and the barrier resin are present in the same ratio as in the present invention, the effect of the transmittance according to the morphology pursued by the present invention can be efficiently provided.

According to an embodiment of the present invention, ^{there are 1 to 100 layers per 400 μm 2} unit area, the individual layer thickness is 0.001 to 2.5 μm, and the long axis length of the layer is 25 μm or more. And the average aspect ratio (φn) is distributed in the form of 10 or more layers. In particular, the individual thickness of the layer affects the morphology, which is an element that affects the control of the transmittance. When the thickness is provided, the resin of the present invention can provide an improved oxygen barrier effect.

According to an embodiment of the present invention, when the polyolefin resin continuous phase (matrix) includes a continuous phase (matrix) or a dispersed phase (domain) of the barrier resin, the volume ratio of the continuous polyolefin resin phase and the barrier resin (Volume ratio) ) Values in the range of 30:70 to 70:30 are provided. Preferably, a range of 50:50 may be provided. In the above range, the oxygen barrier property is excellent, and the processability is improved, and the manufacturing effect can be provided at low cost.

According to an embodiment of the present invention, in the barrier resin having a multilayer structure, a viscosity ratio of a dispersion phase/matrix is provided in the range of 1.E-5 to 3.5. If the viscosity ratio is close to 1.E-6 or exceeds 3.5 due to a large difference in viscosity at the time of blending, the mixing effect will decrease even if a large shear is applied during processing. Therefore, it indicates that the viscosity ratio is important when blending. Therefore, in the case of the present invention, by providing the above range, it is possible to provide a desirable viscosity ratio at the time of blending.

According to an embodiment of the present invention, the polyolefin resin is high-density polyethylene (HDPE), low-density polyethylene (LDPE), medium-density polyethylene (MDPE), and linear low-density polyethylene (LLDPE). Linear Low Density Polyethylene), ethylene-propylene copolymer, metallocene polyethylene, and polypropylene. Polyolefin resins are the most common plastics and are generally used because they have excellent moldability and impact resistance, are easy to handle, and are inexpensive, but the present invention includes a barrier resin to compensate for the high permeability of gas including oxygen. It can be provided together to improve oxygen barrier properties.

The barrier resin included in order to improve oxygen barrier properties is characterized in that it contains at least one or more selected from the group of polyamide, polyvinyl alcohol, and ethylene-vinyl alcohol copolymer. In this case, the ethylene-vinyl alcohol copolymer contains 10 to 50 mol% of ethylene. When the ethylene content is less than 10 mol%, the oxygen barrier property is high, but processing is difficult, and when the ethylene content exceeds 50 mol%, there is a problem that the oxygen barrier property decreases.

The barrier resin of the present invention includes at least one or more selected from the group of polyamide, polyvinyl alcohol, and ethylene-vinyl alcohol copolymer, and the polyamide is nylon 4.6, nylon 6, nylon 6.6, nylon 6.10, nylon 7 , Nylon 8, nylon 9, nylon 11, nylon 12, nylon 46, metaxylenediamine (MXD6), containing at least one selected from amorphous polyamide, oxygen barrier without deteriorating the intrinsic properties of the polyolefin You can improve your sex.

According to an embodiment of the present invention, the resin is provided with a barrier resin having a multilayer structure further comprising a compatibilizer. In the case of a compatibilizer, when a polymer is mixed and used, it is possible to improve the disadvantages of lowering physical properties such as strength, tensile, and elongation by imparting compatibility to the bonding between polymer resins.

In this case, the compatibilizer contains 0.5 to 30 parts by weight based on 100 parts by weight of the barrier resin having the multilayer structure. If it is less than 0.5 parts by weight, it is difficult to expect an effect of improving compatibility, and if it exceeds 30 parts by weight, it is disadvantageous in terms of cost. Therefore, by providing the above range, excellent processing fluidity and molding processing can be provided to provide a desirable commercialization effect.

The compatibilizer is ethylene-anhydrous ethylene-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, ethylene-alkyl acrylate-acrylic acid copolymer, maleic anhydride modified (graft) high-density polyethylene, maleic anhydride modified (graft) linear low density At least one selected from polyethylene, ethylene-alkyl methacrylate-methacrylic acid copolymer, ethylene-butyl acrylate copolymer, ethylene-vinyl acetate copolymer, and maleic anhydride modified (grafted) ethylene-vinyl acetate copolymer Includes.

According to an embodiment of the present invention, the melt index (Melt Index, MI ASTM D1238, 190°C) of the barrier resin having the multilayer structure may be provided in the range of 0.1 to 40g/10min. In addition, it may be provided with a weight average molecular weight of 30,000 to 250,000, preferably 50,000 to 200,000.

According to an embodiment of the present invention, there is provided a barrier article comprising a barrier resin and a polyolefin having a multilayer structure. In this case, the blocking article is characterized in that at least one selected from a multilayer film, a sheet, a wrapping paper, a pipe, a pouch, an interior material, and a container.

On the other hand, with respect to 100 parts by weight of the polyolefin matrix resin, including 30 to 250 parts by weight of a barrier resin and 0.5 to 30 parts by weight of a compatibilizer, a barrier resin having a multilayer structure manufactured by a melt blending method A method of manufacturing is provided. The melt blending method refers to making a new material by applying heat above the melting temperature of the polymer materials to be blended to have a constant morphology by mechanical force after melting, and in the case of the present invention, blocking with polyolefin resin It can be compressed after melting at the melting temperature of the resin EVOH 100 ℃ to 300 ℃, preferably 150 ℃ to 230 ℃.

The volume ratio of the continuous phase of the polyolefin resin and the barrier resin includes 30:70 to 70:30. In addition, in the barrier resin having the multilayer structure, the viscosity ratio of the dispersed phase (domain)/continuous phase (matrix) is provided in the range of 1.E-5 to 3.5. In the case of the above numerical range, it is the same as described above.

The melt blending is characterized by using at least one selected from an extruder, a kneader, a Brabender plsaticorder, a mixing roll, and a mixer. In the case of the extruder, preferably, a melt extruder is provided, and the process can be performed by optimizing process conditions according to various raw materials introduced in the melting process. In the melting process, the melting temperature may be provided at 100° C. to 300° C., and preferably 150° C. to 230° C. may be provided. At this time, the melt flow index is about 0.1 to 40, the analysis method is the Melt Index, and the unit is provided in g/10min.

In addition, as an exemplary embodiment of the extruder, single-screw, twin-screw and multi-screw extruders may be provided, preferably twin-screw extruders are provided, and in this case, kneading properties are excellent.

Further, the blocking resin having a multilayer structure according to the present invention may be added as necessary, such as a heat stabilizer, an ultraviolet stabilizer, a sunscreen agent, a lubricant, a release agent, a coupling agent, etc., but is not limited thereto.

According to an embodiment of the present invention, there is provided a blocking article including a blocking resin having a multilayer structure manufactured by the above manufacturing method. In this case, the blocking article may be at least one selected from a multilayer film, a sheet, a wrapping paper, a pipe, a pouch, an interior material, and a container. For example, in the case of a multilayer film, it may be provided including a polyolefin layer on both sides of the multilayer resin layer, and in this case, it may be manufactured using a multilayer extruder.

Claims (19)

1. Polyolefin resin continuous phase (matrix)

   Including a barrier resin,

   The barrier resin is a barrier resin having a multilayer structure including at least one selected from a continuous phase (matrix) and a dispersed phase (domain).
2. The method of claim 1,

   A barrier resin having a multilayer structure, characterized in that it has a layer morphology by including a barrier resin in the same ratio in the polyolefin resin matrix.
3. The method of claim 2,

   The layer of the layer morphology,

   There are 1 to 100 per unit area of 400㎛ ² , the individual layer thickness is 0.001 to 2.5㎛, the length of the long axis of the layer is 25㎛ or more, the average aspect ratio (φn) is a multi-layered structure in the form of 10 or more layers Barrier resin having.
4. The method of claim 1,

   A barrier resin having a multilayer structure in which a volume ratio of the polyolefin resin matrix and the barrier resin is in the range of 30:70 to 70:30.
5. The method of claim 1,

   In the barrier resin having a multilayer structure, the dispersion phase (domain) / continuous phase (matrix) viscosity ratio (viscosity ratio) is in the range of 1.E-5 to 3.5.
6. The method of claim 1,

   The polyolefin resin is a barrier resin having a multilayered structure comprising at least one selected from the group of high-density polyethylene, low-density polyethylene, medium-density polyethylene, linear low-density polyethylene, ethylene-propylene copolymer, metallocene polyethylene, and polypropylene.
7. The method of claim 1,

   The barrier resin is a barrier resin having a multilayered structure comprising at least one or more selected from the group of polyamide, polyvinyl alcohol, and ethylene-vinyl alcohol copolymer.
8. The method of claim 7,

   The ethylene-vinyl alcohol copolymer is a barrier resin having a multilayer structure containing 10 to 50 mol% of ethylene.
9. The method of claim 7,

   The polyamide is at least any one selected from nylon 4.6, nylon 6, nylon 6.6, nylon 6.10, nylon 7, nylon 8, nylon 9, nylon 11, nylon 12, nylon 46, metaxylenediamine (MXD6), and amorphous polyamide. Barrier resin having a multi-layered structure comprising one or more.
10. The method of claim 1,

    The resin is a barrier resin having a multilayer structure further comprising a compatibilizer.
11. The method of claim 10,

    A barrier resin having a multilayer structure comprising 0.5 to 30 parts by weight of a compatibilizer based on 100 parts by weight of the barrier resin having a multilayer structure.
12. The method of claim 10,

    The compatibilizer is ethylene-anhydrous ethylene-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, ethylene-alkyl acrylate-acrylic acid copolymer, maleic anhydride modified (graft) high density polyethylene, maleic anhydride modified (graft) linear low density At least one selected from polyethylene, ethylene-alkyl methacrylate-methacrylic acid copolymer, ethylene-butyl acrylate copolymer, ethylene-vinyl acetate copolymer, and maleic anhydride modified (grafted) ethylene-vinyl acetate copolymer Barrier resin having a multi-layered structure containing.
13. A barrier article comprising a barrier resin and a polyolefin having a multilayer structure according to any one of claims 1 to 12.
14. The method of claim 13,

    The blocking article is a blocking article, characterized in that at least one selected from a multilayer film, sheet, wrapping paper, pipe, pouch, interior material and container.
15. Preparation of a barrier resin having a multilayer structure manufactured by a melt blending method including 30 to 250 parts by weight of a barrier resin and 0.5 to 30 parts by weight of a compatibilizer based on 100 parts by weight of a polyolefin matrix resin Way.
16. The method of claim 15,

    A method for producing a barrier resin having a multilayer structure in which a volume ratio of the continuous phase of the polyolefin resin and the barrier resin is 30:70 to 70:30.
17. The method of claim 15,

    In the barrier resin having a multilayer structure, a dispersion phase/continuous phase (matrix) viscosity ratio is 1.E-5 to 3.5. A method of manufacturing a barrier resin having a multilayer structure.
18. The method of claim 15,

    The melt blending is a barrier property having a multilayer structure, characterized in that at least one selected from an extruder, a kneader, a Brabender plsaticorder, a mixing roll, and a mixer is used. Method of manufacturing resin.
19. The method of claim 18,

    The extruder is a method for producing a barrier resin having a multilayer structure, characterized in that the twin screw extruder.

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