JP2021181326A - Container with seal material - Google Patents

Abstract

To provide a container with seal material which has stable slipperiness of the outermost layer and content drainage of the innermost layer, and can be opened with weak force.SOLUTION: A container 100 with seal material of the present invention has a container 10 having a mouth part 10a and a seal material 20 fused to the mouth part 10a of the container 10, the seal material has a sealant layer 22 on the surface fused to the container 10, the container 10 has an outermost layer 12, an intermediate resin layer 16, and an innermost layer 18, the outermost layer 12 and the innermost layer 18 contain polyolefin resin and silylated polyolefin and the mouth part 10a of the container 10 is reduced in diameter toward the seal material 20.SELECTED DRAWING: Figure 1

Description

The present invention relates to a container with a sealing material.

Resin multi-layer containers filled with viscous contents such as ketchup and mayonnaise (hereinafter, may be simply referred to as "multi-layer containers" or "containers") are mainly made of a tubular parison by the direct blow method. It is often manufactured by being extruded and then blow molded into the shape of a container in a cooling die. As the composition of the resin material, a polyolefin-based resin such as polypropylene-based resin is used as the surface layer (innermost layer and / or outermost layer), and a barrier layer such as an ethylene vinyl alcohol copolymer is provided as an intermediate layer. A multi-layer structure is common.

The resin multi-layer container is required to have transparency, puncture resistance, and the slipperiness of the container surface. That is, in a resin multi-layer container, the environment such as line, temperature, humidity, etc., such as container molding process, container transfer process, user's content filling process such as food, transfer process after content filling, container packaging process, etc. In each of the processes under different conditions, it is required to exhibit good slipperiness in order to ensure stable continuous production.

For example, in a container molding process line or a container alignment line in a content filling process, slipperiness is required so that contact between containers does not affect the work or production speed in the process or the next process. .. Further, in the transfer line after the container is filled with the contents, slipperiness between the transfer conveyor and the container is required to ensure smooth transfer. Further, in the container / packaging line, since the container is usually wrapped with the exterior film at a high speed, slipperiness between the container surface and the wrap film is required. Since environmental conditions such as temperature and humidity are different in each of these processes and lines, proper slipperiness of the surface of the resin multilayer container is required under various environmental conditions. Further, in order to improve the liquid drainage property of the contents filled in the container, the slipperiness of the inner surface of the resin multilayer container is required.

In order to improve the slipperiness of the resin multilayer container, conventionally, a lubricant is mainly added to the raw material resin of the outermost layer or the innermost layer. The lubricant is usually added to or kneaded into the raw material resin by a masterbatch method.

As the lubricant, for example, fatty acid amides are widely used, and specifically, oleic acid amides, stearic acid amides, erucic acid amides, behenic acid amides (behenic acid amides) and the like are used. Of these, the lubricant having a low melting point is, for example, oleic acid amide, and by adding this, good slipperiness is exhibited when the temperature of the container is low. The lubricant having a relatively high melting point is, for example, behenic acid amide, and by adding this, good slipperiness is obtained when the container becomes hot, such as when the contents such as food are filled at high temperature. You will be able to demonstrate it. These lubricants have also been used by mixing two or more kinds.

Further, in a resin multi-layer container, when the multi-layer container is packaged or packed, when it is packed in a bag and transferred, or when the container is stored, the containers come into contact with each other or the containers and various members come into contact with each other. Or, in some cases, it may be shocked. These contacts and impacts may damage the bottom and body of the container and lose the sealing performance of the container. In particular, if the puncture resistance of the resin multi-layer container is insufficient, there is a high probability that the container will be damaged during the transfer and storage of the container in winter, and the reliability of product distribution will be impaired, so improvement is required. rice field.

In addition, in the resin multi-layer container, if the surface transparency is inferior, it may not be possible to intuitively grasp the state of the filled contents, so improvement has been sought.

In view of this point, in Patent Document 1, (A) low-density polyethylene, (B) high-density polyethylene, (C) an ethylene-based polyolefin obtained by using a metallocene catalyst, and (D) an unsaturated cis structure as a lubricant. A resin-made multi-layer container including a layer made of a resin composition containing a fatty acid amide having a carbon double bond as a surface layer, wherein the resin composition satisfies a given relationship. Multilayer containers are disclosed.

In addition, Patent Document 2 discloses a method for producing a silylated polyolefin.

Japanese Unexamined Patent Publication No. 2012-229037 Japanese Unexamined Patent Publication No. 2010-37555

In the resin multilayer container described in Patent Document 1, the presence of the fatty acid amide having an unsaturated cis-structured carbon double bond as a lubricant provides good slipperiness of the outermost layer and drainage of the contents of the innermost layer. However, this lubricant may bleed out over time. Therefore, the innermost layer may dissolve the lubricant in the contents, and the liquid drainage of the contents may be significantly reduced with time, making it difficult to discharge the entire contents. In addition, the amount of bleed-out of the lubricant added to the outermost layer changes depending on the production and storage environment, and the slipperiness of the bottle surface may differ between summer and winter.

Further, when the resin multilayer container described in Patent Document 1 is adhered to the sealing material and an attempt is made to peel off the sealing material, a large force is required and the contents may be scattered.

Therefore, there is a need to provide a container with a sealing material, which has stable slipperiness of the outermost layer and drainage of the contents of the innermost layer, and can open the sealing material for sealing the container mouth with a weak force. ..

As a result of diligent studies, the present inventors have found that the above problems can be solved by the following means, and have completed the present invention. That is, the present invention is as follows:
<Aspect 1> A container having a mouth portion and a sealing material fused to the mouth portion of the container.
The sealing material has a sealant layer on the surface fused to the container.
The container has an outermost layer, an intermediate resin layer, and an innermost layer.
The outermost layer and the innermost layer contain a polyolefin resin and a silylated polyolefin, and the mouth portion of the container is reduced in diameter toward the sealing material.
Container with sealing material.
<Aspect 2> In the first aspect, the content of the silylated polyolefin in the outermost layer and the innermost layer is 1.0 to 20.0% by mass with respect to the total mass of the outermost layer and the innermost layer, respectively. The container with the sealing material described.
<Aspect 3> The container with a sealing material according to Aspect 1 or 2, wherein the sealant layer of the sealing material is composed of an easy peel layer.
<Aspect 4> The container with a sealing material according to any one of aspects 1 to 3, further comprising a barrier resin layer between the outermost layer and the intermediate resin layer.
<Aspect 5> The container with a sealing material according to any one of aspects 1 to 4, further comprising the contents contained in the container.

According to the present invention, there is provided a container with a sealing material, which has stable slipperiness of the outermost layer and drainage of the contents of the innermost layer, and can open a sealing material for sealing the container mouth with a weak force. Can be done.

FIG. 1 shows a side sectional view of the container with a sealing material of the present invention. FIG. 2 shows a side sectional view of the container with a sealing material of the present invention before and after peeling off the sealing material. FIG. 3 shows a side sectional view of a conventional container with a sealing material before and after peeling the sealing material. FIG. 4 shows a cross-sectional photograph of the container with a sealing material of Example 1 before and after peeling off the sealing material. FIG. 5 shows a cross-sectional photograph of the container with the sealing material of Comparative Example 1 before and after the sealing material is peeled off. FIG. 6 shows a cross-sectional photograph of the container with the sealing material of Comparative Example 3 before and after the sealing material is peeled off.

《Container with sealing material》
As shown in FIG. 1, the container 100 with a sealing material of the present invention is
It has a container 10 having a mouth portion 10a and a sealing material 20 fused to the mouth portion 10a of the container 10.
The sealant layer 22 has a sealant layer 22 on the surface where the sealing material is fused with the container 10.
The container 10 has an outermost layer 12, an intermediate resin layer 16, and an innermost layer 18.
The outermost layer 12 and the innermost layer 18 contain a polyolefin resin and a silylated polyolefin, and the mouth portion 10a of the container 10 is reduced in diameter toward the sealing material 20.

The present inventors have found that according to the above configuration, the sealing material can be easily opened, and as a result, the scattering of the contents can be suppressed.

More specifically, as shown in FIG. 3A, when the container 10 containing the lubricant in the outermost layer 12 and the sealing material 20 are fused to obtain a conventional container with a sealing material 100', A resin reservoir 12a is formed between the outermost layer 12 of the container 10 and the sealant layer of the sealing material 20. When the sealing material 20 of the container with sealing material 100'is to be peeled off, a large force is required because the container 10 and the sealing material 20 are firmly fused due to the presence of the resin pool 12a. As a result, the contents may be scattered. Further, even if the sealing material is to be peeled off, the outermost layer of the container 10 contains a lubricant, but the brittleness is not large. Peeling will proceed due to coagulation fracture. As a result, as shown in FIG. 3B, the resin reservoir 12a and a part 22a of the sealant layer 22 of the sealing material 20 may remain on the container 10 side.

On the other hand, in the container 100 with a sealing material shown in FIG. 2A obtained by fusing the container 10 having the above-mentioned configuration of the present invention and the sealing material 20, when the sealing material 20 is peeled off, Due to the above-mentioned configuration of the outermost layer, the brittleness of the interface between the resin reservoir 12a and the outermost layer 12 is increased. Further, since the direction in which the sealing material 20 is pulled and the direction in which the diameter of the mouth portion is reduced are close to each other, the force for pulling the sealing material 20 tends to be concentrated on the interface between the resin pool 12a and the outermost layer 12. According to these interactions, the resin pool 12a breaks, and the peeling proceeds with the broken portion as a trigger. As a result, it can be broken with a weaker force than in the case of the conventional container with a sealing material.

The container with a sealing material of the present invention may further contain the contents contained in the container. The content may be a viscous seasoning such as ketchup, mayonnaise, mustard, or worcestershire sauce, or a viscous detergent such as toothpaste.

Hereinafter, each component of the present invention will be described.

<container>
The container is a container having a mouth portion. In a state where the sealing material is fused to the mouth portion, the mouth portion of the container is reduced in diameter toward the sealing material. This container may be a resin blow bottle, that is, a container manufactured by resin blow molding.

This container was obtained by extruding the resin constituting each layer of the container as a molten bottomed parison using a multi-layer extruder, placing the parison in a mold, and blowing air into the container. It can be manufactured by cutting the end portion of the container so that the mouth portion has a shape that shrinks toward the sealing material when the sealing material is adhered.

(Outermost layer)
The outermost layer contains a polyolefin-based resin and a silylated polyolefin.

The thickness of the outermost layer should be 5 μm or more, 10 μm or more, 20 μm or more, 30 μm or more, 40 μm or more, 50 μm or more, 60 μm or more, 70 μm or more, 80 μm or more, 90 μm or more, 100 μm or more, or 110 μm or more. It is preferable from the viewpoint of ensuring moldability, and it is preferable that it is 200 μm or less, 170 μm or less, 150 μm or less, or 140 μm or less from the viewpoint of improving the handleability as a container.

Further, it is preferable that the thickness of the outermost layer is thicker than the thickness of the innermost layer from the viewpoint of molding stability.

(Outermost layer: polyolefin resin)
Examples of the polyolefin-based resin include polyethylene-based resin and polypropylene-based resin.

In the present specification, the polyethylene-based resin is a resin containing a repeating unit of an ethylene group in the main chain of a polymer in an amount of more than 50 mol%, 60 mol% or more, 70 mol% or more, or 80 mol% or more, for example, low density. Polyethylene (LDPE), Linear low density polyethylene (LLDPE), Medium density polyethylene (MDPE), High density polyethylene (HDPE), Ethylene-acrylic acid copolymer (EAA), Ethylene-methacrylic acid copolymer (EMAA) , Ethylene-ethyl acrylate copolymer (EEA), ethylene-methyl acrylate copolymer (EMA), ethylene-vinyl acetate copolymer (EVA), carboxylic acid-modified polyethylene, carboxylic acid-modified ethylene vinyl acetate copolymer, ionomer , And derivatives thereof, and mixtures thereof.

In the present specification, the polypropylene-based resin is a resin containing a repeating unit of a propylene group in the main chain of a polymer in an amount of more than 50 mol%, 60 mol% or more, 70 mol% or more, or 80 mol% or more, and is, for example, polypropylene (PP). Examples include homopolymers, random polypropylene (random PP), block polypropylene (block PP), chlorinated polypropylene, acid-modified polypropylene, derivatives thereof, and mixtures thereof.

(Outermost layer: Cyrilized polyolefin)
The silylated polyolefin is a polyolefin-based resin in which silicone is copolymerized in a part of the above-mentioned polyolefin-based resin.

As the silylated polyolefin, for example, the method described in Patent Document 2, that is, a step of mixing and stirring a specific hydrosilane and a halogenated transition metal and filtering the obtained suspension solution to obtain a transition metal catalyst composition. , And the silylated polyolefin obtained by the method of sequentially carrying out the step of reacting the terminal double bond-containing polyolefin containing one or more vinyl groups with the above-mentioned hydrosilane in the presence of the transition metal catalyst composition can be used.

The content of the silylated polyolefin is 0.1% by mass or more, 0.3% by mass or more, 0.5% by mass or more, 0.7% by mass or more, and 1.0% by mass based on the entire mass of the outermost layer. It may be 1.5% by mass or more, 2.0% by mass or more, 2.5% by mass or more, or 3.0% by mass or more, and 20.0% by mass or less, 17.0% by mass or less, 15.0% by mass or less, 12.0% by mass or less, 10.0% by mass or less, 9.0% by mass or less, 8.0% by mass or less, 7.0% by mass or less, 6.0% by mass or less, or It may be 5.0% by mass or less.

(Intermediate resin layer)
As the intermediate resin layer, for example, a thermoplastic resin such as a polyolefin resin, a vinyl polymer, polyester, or a polyamide can be used alone or in combination of two or more in a plurality of layers.

Examples of the vinyl polymer include polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polychlorotrifluoroethylene, polytetrafluoroethylene, polyacrylonitrile (PAN) and the like.

Examples of the polyester include polyethylene terephthalate (PET) and polybutylene terephthalate.

Examples of the polyamide include nylon such as nylon (registered trademark) 6 and nylon MXD6.

In particular, when the above resins are mixed and used, the intermediate resin layer may be a resin layer (so-called recovery layer) obtained by reusing the resin scraps generated during the molding of the container.

The thickness of the intermediate resin layer is preferably 7 μm or more, 10 μm or more, 15 μm or more, 20 μm or more, 30 μm or more, 40 μm or more, 50 μm or more, 60 μm or more, or 65 μm or more from the viewpoint of ensuring strength and barrier properties. Further, it is preferably 150 μm or less, 120 μm or less, 100 μm or less, 80 μm or less, 75 μm or less, or 70 μm or less from the viewpoint of improving the handleability as a container.

(Innermost layer)
The innermost layer contains a polyolefin-based resin and a silylated polyolefin. For the types and contents of the polyolefin-based resins and the silylated polyolefins, the description regarding the outermost layer can be referred to.

The thickness of the innermost layer should be 5 μm or more, 10 μm or more, 20 μm or more, 30 μm or more, 40 μm or more, 50 μm or more, 60 μm or more, 70 μm or more, 80 μm or more, 90 μm or more, or 100 μm or more. It is preferable from the viewpoint of ensuring the above, and it is preferable that the thickness is 200 μm or less, 170 μm or less, 150 μm or less, 140 μm or less, 130 μm or less, 120 μm or less, or 110 μm or less from the viewpoint of improving the handleability as a container.

(Barrier resin layer)
The barrier resin layer is a layer made of a barrier resin. As the barrier resin, a material that is transparent and can suppress the permeation of moisture, organic gas, and inorganic gas from the outside to the inside can be used. As such a barrier resin, for example, a cyclic olefin polymer, an ethylene-vinyl alcohol copolymer, polychlorotrifluoroethylene or the like can be used.

The thickness of the barrier resin layer is preferably 7 μm or more, 10 μm or more, or 15 μm or more, preferably from the viewpoint of ensuring strength and barrier properties, and 100 μm or less, 80 μm or less, 60 μm or less, 55 μm or less, 50 μm or less, It is preferably 45 μm or less, 40 μm or less, or 35 μm or less from the viewpoint of improving the handleability as a container.

(Other layers)
The container may further have other optional layers. Examples of the other layer include an adhesive layer and another resin layer. As the adhesive layer, an adhesive layer suitable for multi-layer extrusion, for example, an adhesive resin such as an acid-modified polyolefin, for example, a maleic anhydride-modified polyolefin can be used. Further, as the other resin layer, for example, those mentioned for the intermediate resin layer can be used.

<Seal material>
The sealing material is a sealing material fused to the mouth of the container. The sealant has a sealant layer on the surface fused to the container. The sealing material may further have a barrier layer.

Further, the sealing material may further have another resin layer.

(Sealant layer)
As the sealant layer, for example, a polyethylene-based resin can be used. These resins may be in the form of, for example, a stretched or unstretched film, a molten resin for extrusion lamination, a paint for hot melt, and the like.

Further, as the sealant layer, an easy peel layer such as a commercially available easy peel resin or an easy peel sealant film, which is not composed of these resins, may be used. These easy peel layers may have a sea-island structure composed of different types of polyolefin-based resins, and may have, for example, a sea-island structure in which a polypropylene-based resin is an island and a polyethylene-based resin is a sea. In particular, according to the combination of the container having the above structure and these easy peel layers, the peel strength can be further weakened, and as a result, the scattering of the contents can be further suppressed.

The thickness of the sealant layer may be 10 μm or more, 15 μm or more, 20 μm or more, or 25 μm or more, or 70 μm or less, 60 μm or less, 50 μm or less, 45 μm or less, 40 μm or less, or 35 μm or less.

(Barrier layer)
The barrier layer may be a transparent barrier layer or an opaque barrier layer. When the barrier layer is a transparent barrier layer, the barrier base material layer can be a transparent barrier base material layer.

(Barrier layer: transparent barrier layer)
As the transparent barrier layer, a material that is transparent and can suppress the permeation of moisture, organic gas, and inorganic gas from the outside into the inside of the container can be used. Examples of the transparent barrier layer include an inorganic vapor deposition film such as a silica vapor deposition film, an alumina vapor deposition film, or a silica-alumina binary vapor deposition film, a polyvinylidene chloride coating film, a polychlorotrifluoroethylene coating film, or a polyvinylidene fluoride coating. An organic coating film such as a film can be used. Further, the barrier resin layer mentioned for the container can also be used as the transparent barrier layer.

When an inorganic vapor-film-deposited film is used as the transparent barrier layer, the thickness of the transparent barrier layer is 100 nm or more, 200 nm or more, 300 nm or more, 500 nm or more, 700 nm or more, or 1 μm or more from the viewpoint of ensuring strength and barrier properties. Therefore, it is preferably 5 μm or less, 4 μm or less, 3 μm or less, or 2 μm or less from the viewpoint of improving the handleability as a container.

When a barrier resin layer or an organic coating film is used as the transparent barrier layer, the thickness of the transparent barrier layer is preferably 7 μm or more, 10 μm or more, or 15 μm or more, and is preferable from the viewpoint of ensuring strength and barrier properties. It is preferably 100 μm or less, 80 μm or less, 60 μm or less, 55 μm or less, 50 μm or less, 45 μm or less, 40 μm or less, or 35 μm or less from the viewpoint of improving the handleability as a container.

(Barrier layer: Opaque barrier layer)
As the opaque barrier layer, for example, in addition to the above-mentioned inorganic vapor deposition film, a single metal foil layer such as a copper foil or an aluminum foil, an alloy foil layer such as a stainless steel foil, or the like can be used.

The thickness of the opaque barrier layer is preferably 7 μm or more, 10 μm or more, or 15 μm or more from the viewpoint of ensuring strength and barrier properties, and 45 μm or less, 40 μm or less, or 35 μm or less is easy to handle. It is preferable from the viewpoint of improving.

(Other resin layer)
As the other resin layer, for example, the resin mentioned for the intermediate resin layer of the container can be used.

(Other layers)
The sealing material may further have other optional layers. As the other layer, for example, an adhesive layer can be used. The adhesive layer of the sealing material is not particularly limited, and for example, a dry laminate adhesive, a hot melt adhesive, or the like can be used.

The present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited thereto.

《Making a container》
4 types 6-layer multi-layer extruder with layer structure of outermost layer (133 μm) / adhesive layer (2 μm) / barrier resin layer (16 μm) / adhesive layer (2 μm) / intermediate resin layer (69 μm) / innermost layer (109 μm) A blow bottle having a capacity of 500 ml and a weight of 16 g was produced by extruding the molten parison having the above and blowing air into the mold. The composition of each layer is as follows:
Outermost layer and innermost layer: Resin composition containing 95% by mass of polyolefin containing low-density polyethylene as a main component and 5% by mass of silylated polyolefin Barrier resin layer: Ethylene-vinyl alcohol copolymer (Evar, Kuraray, ethylene content) 44 mol%)
Intermediate resin layer: Resin (recovery resin) obtained by crushing the scraps of the cut part of the blow bottle.
Adhesive layer: Maleic anhydride-modified polyolefin (Modic, Mitsubishi Chemical Corporation)

When the sealing material was adhered, the obtained blow bottle was cut so that the mouth portion had a shape in which the diameter was reduced toward the sealing material, and the container of Example 1 was produced.

(Example 2)
A container of Example 2 in the same manner as in Example 1 except that a resin composition containing 90% by mass of a polyolefin containing low-density polyethylene as a main component and 10% by mass of a silylated polyolefin was used as the outermost layer and the innermost layer. Was produced.

<Comparative Examples 1 and 2>
The containers of Comparative Examples 1 and 2 were prepared in the same manner as in Example 1 except that the configurations of the outermost layer and the innermost layer were as shown in Table 1. As the lubricant, oleic acid amide (cis-9,10-octadecenoamide) was used.

<Comparative Example 3>
Examples except that the obtained blow bottle was cut so that the mouth portion extends in a columnar shape (straight) without reducing the diameter toward the sealing material when the sealing material is adhered. The container of Comparative Example 3 was prepared in the same manner as in 1.

"evaluation"
<Standing coefficient of friction of the outermost layer>
The container was filled with 500 g of water and stored in an environment of 24 ° C. for a storage period of 8 hours. Next, reduce the amount of water in the container to 200 g, place the container horizontally on the SUS plate, and pull the bottle on the SUS plate from the mouth side with a measuring device (friction measuring machine TR-2, Toyo Seiki Co., Ltd.). The coefficient of static friction at that time was measured.

<Total amount discharge>
The container was filled with 500 g of tomato ketchup, and the weight of the residue when the contents were discharged was measured.

<Easy peeling>
The temperature of the sealing material having a layer structure of PET (12 μm) // AL (25 μm) // PET (25 μm) // Easy P film (30 μm) (“//” indicates a dry laminate adhesive). The mouth of the container was heat-sealed at 180 ° C. for 3 seconds. This sealing material was peeled off at an angle of 45 degrees using a tensile tester, and the peeling strength was measured.

<Break of resin pool>
In the same manner as above, the cross section after the sealing material was peeled off was observed with a microscope at a magnification of 80 times. The evaluation criteria are as follows:
〇: The resin pool was broken.
X: Resin pool remained.

For Example 1, cross-sectional photographs before and after peeling the sealing material are shown in FIGS. 4 (a) and 4 (b), respectively. For Comparative Example 2, cross-sectional photographs before and after the sealing material is peeled off are shown in FIGS. 5 (a) and 5 (b), respectively. For Comparative Example 3, cross-sectional photographs before and after the sealing material is peeled off are shown in FIGS. 6 (a) and 6 (b), respectively.

Table 1 shows the configurations and evaluation results of Examples and Comparative Examples.

From Table 1, in the containers of Examples 1 and 2, where the outermost layer and the innermost layer contain a polyolefin resin and a silylated polyolefin, and the mouth portion is reduced in diameter toward the sealing material, static friction is obtained. It can be understood that good evaluations were obtained in terms of the coefficient, the residue at the time of total discharge, and the peel strength. Further, from FIG. 4, it can be understood that in the container of Example 1, the resin pool is broken when the sealing material is peeled off.

On the other hand, in the container of Comparative Example 1 in which the outermost layer and the innermost layer did not contain the silylated polyolefin, the coefficient of static friction at 5 ° C., the residue at the time of total discharge, and the peel strength were not good.

Further, in the container of Comparative Example 2 in which the outermost layer and the innermost layer contained a lubricant instead of the silylated polyolefin, the coefficient of static friction at 24 ° C. was not good. In addition, the residue and peel strength at the time of discharging the entire amount were better than those of the container of Comparative Example 1, but not better than those of the container of Examples 1 and 2. Further, from FIG. 5, it can be understood that in the container of Comparative Example 2, the resin pool did not break when the sealing material was peeled off.

Further, from FIG. 6, it can be understood that even in the container of Comparative Example 3, the resin pool did not break when the sealing material was peeled off. In Comparative Example 3, evaluations other than the seal strength and the appearance evaluation by photographs were not performed, but since the configurations of the outermost layer and the innermost layer are the same as those in Example 1, these evaluations are equivalent evaluations. Can be inferred that

10 Container 10a Mouth 12 Outermost layer 12a Resin pool 14 Barrier layer 16 Intermediate resin layer 18 Innermost layer 20 Sealant 22 Sealant layer 22a Part of sealant layer 24 Barrier layer 100 Container with sealant

Claims (5)

It has a container with a mouth and a sealing material fused to the mouth of the container.
The sealing material has a sealant layer on the surface fused to the container.
The container has an outermost layer, an intermediate resin layer, and an innermost layer.
The outermost layer and the innermost layer contain a polyolefin resin and a silylated polyolefin, and the mouth portion of the container is reduced in diameter toward the sealing material.
Container with sealing material. The seal according to claim 1, wherein the contents of the silylated polyolefin in the outermost layer and the innermost layer are 1.0 to 20.0% by mass with respect to the total mass of the outermost layer and the innermost layer, respectively. Container with material. The container with a sealing material according to claim 1 or 2, wherein the sealant layer of the sealing material is composed of an easy peel layer. The container with a sealing material according to any one of claims 1 to 3, further comprising a barrier resin layer between the outermost layer and the intermediate resin layer. The container with a sealing material according to any one of claims 1 to 4, further comprising the contents contained in the container.

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