KR20210158328A - Adhesive resin composition, sheet using this composition, lid material, set of members for container, and container - Google Patents

Abstract

Provided are an adhesive resin composition which has excellent film-forming properties and forms an adhesive layer with excellent easy opening properties with respect to a container body made of plastics such as polypropylene, polystyrene, and the like and excellent boiling resistance, and a sheet, lid material, container member set, and container using the same. To achieve this, the adhesive resin composition comprises: (A) 40 to 75 mass% of an ethylene-vinyl acetate copolymer having a vinyl acetate content of 5 to 15 mass%; (B) 10 to 45 mass% (preferably 20 to 30 mass%) of a linear low-density polyethylene having a melt mass flow rate of 1 to 20 g/10 min; and (C) 15 to 30 mass% of a tackifying resin.

Description

An adhesive resin composition, a sheet using the composition, a lid material, a member set for containers, and a container TECHNICAL FIELD

This application claims priority on the basis of Japanese Patent Application No. 2020-106703 for which it applied on June 22, 2020, and takes in all the indication here.

The present invention relates to an adhesive resin composition, a sheet using the adhesive resin composition, a lid member, a member set for a container, and a container.

In recent years, as a food packaging and industrial packaging material, the container body made from plastics, such as polypropylene and polystyrene, is used from a viewpoint of being excellent in heat resistance and heat insulation heat retention. As a lid material used for these container bodies, the film which has moderate heat-sealing strength and has easy peelability is used preferably.

As a film used as a lid material of a container body made of polypropylene or polystyrene, for example, in Patent Document 1, the vinyl acetate content is 30 to 15 mass%, and the melt mass-flow rate is 10 to 40 g An easily peelable film comprising an ethylene-vinyl acetate copolymer of /10 min, a tackifier, and an adhesive layer comprising a resin composition containing low-density polyethylene is disclosed.

Japanese Patent Laid-Open No. 2019-199496

However, since the adhesive layer contains low-density polyethylene, the easily peelable film of patent document 1 has a problem that heat resistance is inferior and a boil-retort process is impossible.

Accordingly, the object of the present invention is an adhesive resin composition capable of forming an adhesive layer excellent in film formability and excellent in easy opening and sealing resistance to a plastic container body such as polypropylene and polystyrene. , and to provide a sheet, a lid material, a member set and a container using the same.

As a result of intensive research, the present inventors have found that an ethylene-vinyl acetate copolymer (A) having a specific vinyl acetate content, a linear low-density polyethylene (B) having a specific melt mass flow rate, and adhesive By combining imparting resin (C) at a predetermined compounding ratio, it was discovered that the above subject was solved, and the present invention was reached.

The present invention has a vinyl acetate content of 5 to 15 mass% of an ethylene-vinyl acetate copolymer (A) of 40 to 75 mass%, a melt mass flow rate of 1 to 20 g/10 min of linear low-density polyethylene (B) 10 to It relates to the adhesive resin composition containing 45 mass % and 15-30 mass % of tackifying resin (C).

The present invention relates to the adhesive resin composition having a melt mass flow rate of 1 to 20 g/10 min.

The present invention relates to the above adhesive resin composition, wherein the melting point of the ethylene-vinyl acetate copolymer (A) measured by a differential scanning calorimeter is 80 to 120°C.

The present invention relates to the above adhesive resin composition, wherein the linear low-density polyethylene (B) has a melting point of 90 to 150°C as measured by a differential scanning calorimeter.

This invention relates to the said adhesive resin composition whose melting|fusing point measured by the differential scanning calorimeter of tackifying resin (C) is 55-100 degreeC.

The present invention relates to the adhesive resin composition, wherein the tackifying resin (C) contains at least one selected from the group consisting of an alicyclic hydrocarbon resin and a terpene resin.

This invention relates to the said adhesive resin composition whose content rate of linear low-density polyethylene (B) is 20-30 mass %.

The present invention relates to a sheet provided with a coating film made of the adhesive resin composition on a substrate.

The present invention relates to a lid member comprising the sheet.

The present invention relates to a container body having an opening, and a member set for an openable container comprising the lid member.

The present invention relates to an openable container in which an opening of the container body is sealed by the lid member.

According to the present invention, an adhesive resin composition capable of forming an adhesive layer excellent in film-forming properties and excellent in easy opening and boiling resistance to a plastic container body made of polypropylene and polystyrene, etc. at the same time, and a sheet using the same; A lid material, a member set, and a container can be provided.

The adhesive resin composition of the present invention has a vinyl acetate content of 5 to 15 mass%, an ethylene-vinyl acetate copolymer (A) of 40 to 75 mass%, and a melt mass flow rate of 1 to 20 g/10 minutes of linear low-density polyethylene. (B) 10-45 mass % and 15-30 mass % of tackifying resin (C) are contained, It is characterized by the above-mentioned.

Content of linear low-density polyethylene (B) becomes like this. Preferably it is 20-30 mass %.

By combining an ethylene-vinyl acetate copolymer (A) having a specific vinyl acetate content, a linear low-density polyethylene (B) having a specific melt mass flow rate, and a tackifying resin (C) in a predetermined mixing ratio, easy opening It becomes possible to provide an adhesive resin composition which is excellent in heat resistance and can be subjected to boiling treatment.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

<Ethylene-vinyl acetate copolymer (EVA) (A)>

The ethylene-vinyl acetate copolymer (A) is a thermoplastic resin obtained by copolymerizing ethylene and vinyl acetate. The ethylene-vinyl acetate copolymer (A) used in the present invention has a vinyl acetate content of 5 to 15% by mass, and as long as it satisfies this, it can be used without particular limitation. By using such an ethylene-vinyl acetate copolymer, the adhesive resin composition excellent in extrusion lamination processability, low temperature sealing property, and inflation processability is obtained. An ethylene-vinyl acetate copolymer may be used individually by 1 type, and may use 2 or more types together.

The content of the ethylene-vinyl acetate copolymer (A) is 40 to 75 mass% based on the total amount of the adhesive resin composition. When the content of the ethylene-vinyl acetate copolymer (A) is 40% by mass or more, the opening strength is not impaired, and the adhesion to the container body made of plastics such as polypropylene and polystyrene becomes good. When the content of the ethylene-vinyl acetate copolymer (A) is 75% by mass or less, the balance between coating aptitude and adhesiveness is excellent, and resin residue and thread pulling on the flange of the container body do not occur.

The content of the ethylene-vinyl acetate copolymer (A) is preferably 45 to 55% by mass from the viewpoint of easy opening and peeling feeling.

The melting point of the ethylene-vinyl acetate copolymer (A) as measured by a differential scanning calorimeter is preferably 80 to 120°C, more preferably 90 to 110°C. If it is in this range, compatibility with a linear low-density polyethylene (B) improves, coating aptitude improves, and favorable adhesive force can be obtained without impairing unsealing strength, and it is preferable.

The melt mass flow rate (MFR) of the ethylene-vinyl acetate copolymer (A) is preferably 0.5 to 50 g/10 min, more preferably 0.5 to 20 g/10 min, particularly preferably 0.5 to 10 g/10 min. to be. In addition, the melt mass flow rate in this specification is a value measured on condition of 190 degreeC and 21.168N based on JISK7210.

The density of the ethylene-vinyl acetate copolymer (A) is preferably 0.90 to 0.95 g/cm 3 , more preferably 0.92 to 0.94 g/cm 3 . In addition, the density in this specification is a value measured by the pycnometer method based on JISK7112.

<Linear low-density polyethylene (B)>

The linear low-density polyethylene (B) is a thermoplastic resin obtained by copolymerizing ethylene as a repeating unit and a small amount of ?-olefin. The linear low-density polyethylene (B) used in the present invention has a melt mass flow rate of 1 to 20 g/10 min, and as long as it satisfies this, it can be used without particular limitation. By using such a linear low-density polyethylene (B), the adhesiveness with respect to the container body made from plastics, such as polypropylene and polystyrene, is improved, and the adhesive resin composition excellent in boiling resistance is obtained. Linear low-density polyethylene (B) may be used individually by 1 type, and may use 2 or more types together.

The content rate of the linear low-density polyethylene (B) is 10-45 mass % based on the whole quantity of an adhesive resin composition. When content of linear low-density polyethylene (B) is 10 mass % or more, the retentivity of adhesive strength will become favorable. If the content of the linear low-density polyethylene (B) is 45% by mass or less, melt film cracking is unlikely to occur and the extrusion lamination processability is excellent.

The content of the linear low-density polyethylene (B) is preferably 15 to 40% by mass, more preferably 20 to 30% by mass from the viewpoints of adhesiveness, adhesive strength retention in a high-temperature environment, and boiling resistance.

The melting point of the linear low-density polyethylene (B) as measured by a differential scanning calorimeter is preferably 90 to 150°C, more preferably 100 to 130°C. If it is in said range, since moderate adhesive strength is expressed and it is more excellent in low-temperature sealing property, it is preferable.

The density of linear low-density polyethylene (B) becomes like this. Preferably it is 0.85-0.95 g/cm<3>, More preferably, it is 0.90-0.95 g/cm<3>.

<Tackifying resin (C)>

The tackifying resin (C) in this invention is not restrict|limited in particular, In the field|area of a sealant resin, it can select suitably from well-known tackifying resin.

As tackifying resin, aliphatic hydrocarbon resin, alicyclic hydrocarbon resin, aromatic hydrocarbon resin, polyterpene type resin, and rosins are mentioned, for example. As the polyterpene resin, a homopolymer or copolymer such as α-pinene and β-pinene, or a hydrogenated terpene resin obtained by adding (hydrogenation) to these can be used.

The tackifying resin (C) preferably contains at least one selected from the group consisting of alicyclic hydrocarbon resins, aromatic hydrocarbon resins and terpene resins, and more preferably from the group consisting of alicyclic hydrocarbon resins and terpene resins. It contains at least 1 type selected.

Tackifying resin may be used individually by 1 type, and may use 2 or more types together.

Content of tackifying resin (C) is 15-30 mass % on the basis of whole quantity of adhesive resin composition. If content of tackifying resin (C) is 10 mass % or more, favorable adhesiveness is acquired with respect to the container body made from plastics, such as polypropylene and polystyrene, without impairing opening strength. When content of tackifying resin (C) is 30 mass % or less, it is hard to generate|occur|produce a melt film crack, and it is excellent in extrusion lamination processability.

Content of tackifying resin (C) becomes like this. From a viewpoint of film-forming property, easy opening property, and a peeling feeling, Preferably it is 20-30 mass %.

The softening point of tackifying resin (C) becomes like this. From a viewpoint of the adhesiveness at the time of heat sealing, and easily openability, Preferably it is 120 degrees C or less, More preferably, it is 100-120 degreeC. In addition, the softening point in this specification can be calculated|required based on JISK6863.

The melting point of tackifying resin (C) as measured by a differential scanning calorimeter is preferably 55 to 100°C, more preferably 60 to 80°C.

<Adhesive resin composition>

The adhesive resin composition of this invention can be manufactured by mixing an ethylene-vinyl acetate copolymer (A), a linear low-density polyethylene (B), and a tackifying resin (C) by a well-known method. As a manufacturing method, for example, each component is thrown into mixing apparatuses, such as a Henschel mixer and a tumbler mixer, and it mixes for 5 to 20 minutes, The obtained mixture is injected|thrown-in to an extruder, It heat-kneads, and the method of extruding is mentioned. An extrusion process is normally performed at 150-200 degreeC. The extrudate is usually processed into a pellet shape and used in a post-process. As the extruder, a twin screw extruder is suitably used, but is not limited thereto.

The total amount of the ethylene-vinyl acetate copolymer (A), the linear low-density polyethylene (B) and the tackifying resin (C) in the adhesive resin composition of the present invention is preferably 95 mass based on the adhesive resin composition % or more, more preferably 98 mass% or more.

The melt mass flow rate of the adhesive resin composition is preferably 1 to 20 g/10 min, more preferably 1 to 15 g/10 min. If it is in this range, it is excellent in adhesiveness with respect to the container body made from plastics, such as polypropylene and polystyrene, and is preferable.

In the adhesive resin composition of the present invention, any resin other than the ethylene-vinyl acetate copolymer (A), the linear low-density polyethylene (B) and the tackifying resin (C) and/ Or you may mix|blend an additive.

As arbitrary resin, For example, polyolefin resin, such as high density polyethylene and polypropylene, its oxide, and maleic acid modified material; ethylene-unsaturated monocarboxylic acid copolymers such as ethylene-acrylic acid copolymer and ethylene-(meth)acrylic acid copolymer, and metal salts thereof; waxes such as high-density polyethylene wax, polypropylene wax, Fischer-Tropsch wax, paraffin wax, oxidized wax, and maleic acid-modified wax; can be heard Arbitrary resin may be used individually by 1 type, and may use 2 or more types together.

The additive can be used for the purpose of preventing thermal deterioration, thermal decomposition, blocking, or the like, or for the purpose of ensuring proper processing such as film processing and extrusion lamination processing. Examples of the additive include an organic lubricant such as erucic acid amide, an inorganic lubricant such as calcium carbonate, an antioxidant such as hindered phenol, an antiblocking agent, an antistatic agent, a filler, an antifogging agent, an amorphous aluminosilicate and silicon dioxide.

Optional resins and/or additives may be blended when mixing the ethylene-vinyl acetate copolymer (A), the linear low-density polyethylene (B), and the tackifying resin (C), or the ethylene-vinyl acetate copolymer (A) ), you may mix|blend with any of linear low-density polyethylene (B) or tackifying resin (C).

<sheet>

Next, a sheet in which a coating film (hereinafter also referred to as a film or an adhesive layer) made of the adhesive resin composition of the present invention is disposed on a substrate will be described.

It does not restrict|limit especially as a method of disposing the adhesive resin composition on the base material. For example, a method of filming the adhesive resin composition pelletized as described above by an inflation method or a casting method, etc., and laminating the obtained film and a substrate, and a method of directly coating the kneaded adhesive resin composition on a substrate can be heard A film and a base material may be laminated|stacked via another adhesive bond layer.

Substrates include long or cut short films and sheets.

Generally, the terms "film" or "sheet" are used for a thin film molded body depending on the thickness, but there is no clear definition of these, and there is no clear distinction between them.

Hereinafter, "film" used as a base material shall include "film" and "sheet".

In addition, also about the sheet|seat of this invention, "film" and "sheet" shall be included.

The substrate may be a stretched or unstretched single-layer film such as a polyester film, a polyamide film, and a polypropylene film, and may be a laminated film in which a plurality of layers such as a resin laminated product are laminated.

For example, when a base material on which polyethylene is laminated in advance is used, the sheet can be manufactured by directly extruding and laminating the adhesive resin composition on the base material.

Moreover, a sheet|seat can be obtained by co-extruding an adhesive resin composition with polyethylene, polypropylene, etc. to obtain a laminated|multilayer film, and laminating|stacking a laminated|multilayer film and a base film by dry lamination or sand lamination.

In order to improve the adhesiveness between the base material and the adhesive layer (film made of the adhesive resin composition of the present invention), flame treatment, ozone treatment, corona discharge treatment, or anchoring in advance with respect to the surface of the base material on which the adhesive layer is formed. Coating-like treatment can be performed.

The thickness of the adhesive layer (film made of the adhesive resin composition of the present invention) is preferably 5 µm or more, more preferably 10 µm or more. The upper limit in particular is not restrict|limited, For example, it is 40 micrometers or less.

The sheet of the present invention can be suitably used as a sealant film. The sheet of the present invention can be suitably used for a lid material for a container, a finished product, and the like. In a finished product, the entrance of the bag can be sealed by disposing an adhesive layer (film made of the adhesive resin composition of the present invention) on the inner surface.

<Lid material>

The sheet of the present invention in which a coating film made of an adhesive resin composition is laminated on a substrate is cut to fit the shape of the opening of the container body to be sealed, and is suitably used as a lid material.

When the sheet of the present invention is used as a lid material, various substrates can be used as the substrate. As a base material, paper, aluminum, polyester, polyethylene, polypropylene, polystyrene, aluminum vapor deposition polyester, aluminum vapor deposition polypropylene, silica vapor deposition polyester, etc. are mentioned, for example. The substrate may have a single-layer structure or a laminated structure with two or more layers.

In the case of forming the lid member with the sheet of the present invention, a preferable substrate is, for example, a laminated film of polyethylene terephthalate (PET) having a thickness of 5 to 20 μm and polyethylene (PE) having a thickness of 5 to 30 μm. have.

As a lid material, what laminated|stacked the film of 5-40 micrometers in thickness which consists of the adhesive resin composition of this invention on the polyethylene surface of the said laminated|multilayer film is preferable.

<Set of members for containers, containers>

The container body and the lid member are combined to form a container member set. A container is a container in which the opening of the container body is sealed by the lid material, and the container can be opened.

The container body is not particularly limited, but is preferably a plastic container body or a container body whose inner surface is covered with plastic. Among them, the adhesive resin composition of the present invention is excellent in easy opening and boiling resistance to a plastic container body made of polypropylene and polystyrene, etc. Alternatively, it is suitably used for a container body covered with polystyrene.

That is, the container of the present invention preferably has a container body made of polypropylene or polystyrene, or an opening in a container body whose inner surface is covered with polypropylene or polystyrene, which is sealed with the lid member.

[Example]

Hereinafter, the present invention will be described according to examples, but the present invention is not limited thereto.

[Melt Mass Flow Rate (MFR)]

MFR was measured based on JISK7210. A sample was filled in a cylinder with an inner diameter of 9.55 mm and a length of 162 mm of the melt indexer L244 (manufactured by Takara Kogyo Co., Ltd.), melted at 190 ° C. , MFR was obtained from the amount of resin extruded per unit time (g/10 min) from an orifice with a diameter of 2.1 mm installed in the center of the cylinder.

[Examples 1 to 9 and Comparative Examples 1 to 5]

(Production of adhesive resin compositions (S-1) to (S-14))

With the formulation composition shown in Tables 1 and 2, ethylene-vinyl acetate copolymer (A), linear low-density polyethylene (B), tackifying resin (C), low-density polyethylene (D) and additives were mixed with a Henschel mixer for 5 minutes Pre-blended. The obtained pre-blended material was put into a hopper and supplied to the following extruder using a screw feeder, and extruded under the following conditions, to prepare an adhesive resin composition (S-1) to (S-14) in the form of pellets.

The unit of the compounding quantity in Table 1 and Table 2 is "mass part."

<Extruder and extrusion conditions>

Extruder: Co-rotating twin screw extruder “PMT32-40.5” manufactured by I·K·J.

Barrel temperature: 160°C (Temperature at the inlet: 150°C);

Screw rotation speed: 200rpm;

Feed rate: 10 kg/hr.

(Production of laminated sheet)

As a substrate, a laminated film of polyethylene terephthalate (PET, 12 µm thick)/polyethylene (PE, 25 µm thick) was prepared. The adhesive resin composition obtained in each example was extruded and laminated with respect to the PE surface of the said base material under the following processing conditions, and the laminated sheet was obtained. Film formation was performed so that the thickness of an adhesive bond layer might be set to 20 micrometers.

<Processing conditions>

Extrusion laminator: “400M/M test EXT laminator” manufactured by Musashino Kikai, resin temperature just below the die: 200 to 250°C (adjusted appropriately to the desired temperature by the MFR of the adhesive resin composition, etc.),

Machining speed: 30 m/min;

T die width: 400mm,

Surface temperature of the cooling roll: 20°C.

(Manufacture of lid material)

The obtained lamination sheet was cut into the size of 90 mm x 90 mm, and the lid|cover material was obtained.

[Evaluation items and evaluation method]

The following evaluation was performed about the obtained adhesive resin composition and lamination|stacking sheet (lid material). A result is shown in Table 1 and Table 2.

[film-forming properties]

In the above (manufacture of a laminated sheet), when the resin temperature was adjusted to a temperature within the range of 200 to 260°C, it was confirmed whether or not the resin was coated. Moreover, the film thickness of 10 places randomly selected using the film thickness meter was measured. The following criteria evaluated the film-forming of the adhesive resin composition.

<Evaluation criteria>

A: Coating is possible, and the film thickness of 10 places is within the range of 20±5 μm: good,

C: Coating is impossible or coating is possible due to the occurrence of film cracks or film fragments, but the film thickness at 10 locations is outside the range of 20±5 µm: Poor.

[Easy to open]

As the container body, two types were prepared: a container body made of polypropylene having an opening (opening diameter: 71 mmφ) and a container body made of polystyrene having an opening (opening diameter: 71 mmφ).

With respect to the openings of the two types of container bodies, the coating surfaces of the lid members were each closely adhered to each other, and thermal bonding was performed under the conditions of a gauge pressure of 0.3 MPa, 160°C, and 1 second to prepare an airtight container.

The obtained two types of airtight containers were left to stand for 24 hours in a constant temperature and humidity chamber with a temperature of 23 degreeC and 65% of relative humidity. For each sealed container in this constant temperature and humidity chamber, using an autograph ("AGS-X" manufactured by Shimadzu Corporation), under the conditions of a peeling rate of 200 mm/min, a peeling angle of 90°, and a sample width of 15 mm, the peel strength of the lid Measurements were made. The maximum value of peeling strength was made into opening strength, and the following reference|standard evaluated easy opening property.

<Evaluation criteria>

A: The maximum value of peeling strength is 10N or more and less than 15N: good,

B: The maximum value of peel strength is 5N or more and less than 10N: can be used;

C: The maximum value of peeling strength is less than 5N: Poor.

[Invisibility]

As the container body, two types were prepared: a container body made of polypropylene having an opening (opening diameter: 71 mmφ) and a container body made of polystyrene having an opening (opening diameter: 71 mmφ). 40 degreeC water was filled in each container body.

With respect to the openings of the two types of container bodies, the coating surfaces of the lid members were respectively brought into close contact, and thermal bonding was performed under the conditions of a gauge pressure of 0.3 MPa and 180° C. for 1 second to manufacture an airtight container.

The obtained two types of airtight containers were immersed in 90 degreeC boiling water, and the presence or absence of the separation|separation of a lid material was visually observed after 30 minutes, and the following reference|standard evaluated.

<Evaluation criteria>

A: No separation of the lid material (with boiling resistance): Good,

C: There is separation of the lid material (no boiling resistance): Poor.

[Table 1]

[Table 2]

The abbreviation of Table 1 and Table 2 is shown below.

VA cont.: Vinyl acetate content,

A1: ethylene-vinyl acetate copolymer (vinyl acetate content 12%), density 0.931 g/cm 3 , DSC melting point 95° C., MFR 0.8 g/10 min,

A2: Ethylene-vinyl acetate copolymer (vinyl acetate content 6%), density 0.925 g/cm 3 , DSC melting point 98° C., MFR 8.5 g/10 min.

B1: linear low-density polyethylene, density 0.922 g/cm 3 , DSC melting point 106° C., MFR 15.0 g/10 min

B2: Linear low-density polyethylene, density 0.936g/cm<3>, DSC melting|fusing point 124 degreeC, MFR 2.0g/10min.

C1: partially hydrogenated alicyclic hydrocarbon resin, softening point 110 ℃, DSC melting point 71 ℃,

C2: partially hydrogenated alicyclic hydrocarbon resin, softening point 105 ℃, DSC melting point 63 ℃,

C3: partially hydrogenated alicyclic hydrocarbon resin, softening point 136 ℃, DSC melting point 92 ℃,

C4: partially hydrogenated alicyclic hydrocarbon resin, softening point 115 ℃, DSC melting point 69 ℃,

C5: Fully hydrogenated alicyclic hydrocarbon resin, softening point 125°C, DSC melting point 77°C.

D1: Linear low-density polyethylene, density 0.915 g/cm<3>, DSC melting|fusing point 98 degreeC, MFR 145g/10min.

Slip agent: erucic acid amide, DSC melting point 80℃,

Antioxidants: hindered phenolic antioxidants;

Anti-blocking agent: amorphous aluminosilicate.

As shown in Table 1 and Table 2, 45-70 mass % of ethylene-vinyl acetate copolymer (A), 15-45 mass % of linear low-density polyethylene (B), and 15-30 mass % of tackifying resin (C) The adhesive layer made of the adhesive resin composition of the present invention containing

In particular, if it is 45-70 mass % of ethylene-vinyl acetate copolymer (A), 20-30 mass % of linear low-density polyethylene (B), and 15-30 mass % of tackifying resin (C), overall good results are obtained lost.

Accordingly, it was found that the adhesive resin composition of the present invention containing the specific resins (A) to (C) in a specific ratio is suitable as a lid material for a container body made of plastic such as polypropylene and polystyrene.

Claims (10)

40 to 75 mass% of an ethylene-vinyl acetate copolymer (A) having a vinyl acetate content of 5 to 15 mass%, 20 to 30 mass% of a linear low-density polyethylene (B) having a melt mass flow rate of 1 to 20 g/10 min; And the adhesive resin composition containing 15-30 mass % of tackifying resin (C).
According to claim 1,
An adhesive resin composition having a melt mass flow rate of 1 to 20 g/10 min.
3. The method of claim 1 or 2,
An adhesive resin composition having an ethylene-vinyl acetate copolymer (A) having a melting point of 80 to 120°C as measured by a differential scanning calorimeter.
3. The method of claim 1 or 2,
An adhesive resin composition having a linear low-density polyethylene (B) having a melting point of 90 to 150°C as measured by a differential scanning calorimeter.
3. The method of claim 1 or 2,
The adhesive resin composition whose melting|fusing point is 55-100 degreeC as measured by the differential scanning calorimeter of tackifying resin (C).
3. The method of claim 1 or 2,
The adhesive resin composition in which tackifying resin (C) contains at least 1 sort(s) selected from the group which consists of an alicyclic hydrocarbon resin and a terpene resin.
A sheet provided with a coating film made of the adhesive resin composition according to claim 1 or 2 on a substrate.
A lid material comprising the sheet according to claim 7.
An openable container member set comprising a container body having an opening and the lid member according to claim 8.
An openable container in which the opening of the container body is sealed with the lid material according to claim 8.