JP2019156416A - Package with cleaning agent, laminated film - Google Patents

Abstract

To suppress delamination in a laminated film in a package where a cleaning agent containing an ethanolamine-based alkali agent having excellent cleanability is sealed in a bag-like container made of a laminated film.SOLUTION: In a package with cleaning agent in which a cleaning agent containing an ethanolamine-based alkali agent is sealed in a bag-like container formed by a laminated film including at least a base material layer, an adhesive layer and a sealant layer in this order, the adhesive layer is formed by a two-part curing type adhesive comprising a main agent whose main components are polyether polyol and/or polyether polyurethane polyol, and a curing agent whose main component is polyisocyanate.SELECTED DRAWING: None

Description

  The present invention relates to a package in which a cleaning agent containing an ethanolamine alkaline agent is enclosed. The present invention also relates to a laminate film used for the package.

In recent years, from the viewpoint of reducing the environmental load, it is required to reduce the discharge amount of packaging containers that become waste after use. And in order to reduce discharge | emission amount, many of the packaging containers which consist of a plastic bottle are switched to the bag-shaped container which consists of a laminate film. For example, shampoos, body soaps, laundry detergents, and the like are provided for refilling in a bag-like container made of a laminate film.
However, cleaning agents containing an alkaline agent (especially, a cleaning agent having a high blending ratio of alkaline agent and a pH exceeding 10) are not so much switched to a bag-like container. This is because a detergent containing an alkali agent has excellent detergency, but has a high permeability to a plastic film. Therefore, when a bag-like container made of a laminate film is used, the alkali agent penetrates into the laminate film, This is because there is a risk of delamination.

Patent Document 1 discloses a package (patent) in which a liquid detergent composition containing an amine-type alkaline agent and a solvent is contained in a bag-like container made of a laminate film (corresponding to “composite film substrate” in Patent Document 1). It is an invention related to “Liquid cleaning agent in bag-like container” in Document 1, and is capable of degreasing the stains on fats and oils and long-term storage stability at high temperatures (when storing under severe heat, the laminate film constituting the container is delamination) It is an object to provide a liquid detergent contained in a bag-like container having excellent performance.
In Patent Document 1, in order to solve the problems such as delamination while improving the ability to clean fat and oil stains, the cleaning agent has an amine type alkaline agent having a relatively large molecular weight, specifically a molecular weight such as triethanolamine is 110. It has been proposed to incorporate the above amine type alkali agent, and further, it has been proposed to employ a film composed of a linear low density polyethylene film and a reinforcing plastic film as a laminate film.

In Patent Document 2, a liquid detergent containing a liquid detergent containing a volatile component such as monoethanolamine or diethanolamine enclosed in a plastic film is packed with a liquid detergent contained in an outer box. It is an invention of a pouch packing box.
Patent Document 2 discloses that when a liquid cleaning agent containing a volatile component is stored for a long time, the volatile component contained in the liquid cleaning agent may permeate the plastic film of the pouch containing the liquid cleaning agent. ing. In addition, as a means for suppressing the transmission of volatile components, it has been studied to use a laminated film including a silica-deposited film having a high barrier property, an aluminum-deposited film, an aluminum foil layer, etc. In the case of a volatile alkaline agent such as monoethanolamine or diethanolamine, it has been pointed out that the alkaline agent accumulates in an adhesive layer (a deposition layer or a bonding layer with a metal layer) and dissolves the adhesive.

JP2005-097496 JP2006-098017

The problem to be solved by the present invention is to suppress delamination of a laminate film in a package in which a detergent containing an ethanolamine-based alkaline agent having excellent detergency is enclosed in a bag-like container made of a laminate film. is there.
Another object of the present invention is to prevent the alkali agent from passing through the laminate film. When the alkaline agent permeates the laminate film, the surface of the package becomes sticky, giving an unpleasant impression to the user.

In the present invention, as a means for solving the above-mentioned problems, a cleaning agent containing an ethanolamine-based alkaline agent is provided in a bag-like container formed of a laminate film including at least a base material layer, an adhesive layer, and a sealant layer in this order. In the encapsulated package containing the cleaning agent, the adhesive layer is composed of a main component mainly composed of polyether polyol and / or polyether polyurethane polyol, and a curing agent mainly composed of polyisocyanate, and a two-component curable type. A package containing a cleaning agent is provided, which is formed from an adhesive.
Moreover, the said laminate film is provided with the barrier layer between the said base material layer and the said adhesive bond layer, The said packaging body containing a cleaning agent characterized by the above-mentioned is provided.
Moreover, the said hardening | curing agent containing aromatic cleaning polyisocyanate is provided with the said cleaning agent containing package.
Moreover, the said ethanolamine type | system | group alkaline agent is monoethanolamine and / or the diethanolamine, The package containing the said cleaning agent characterized by the above-mentioned is provided.

  In addition, a laminate film comprising at least a base material layer, an adhesive layer, and a sealant layer in order, wherein the adhesive layer has a polyether polyol and / or a polyether polyurethane polyol as a main agent, and a polyisocyanate as a curing agent. There is provided a laminate film for packaging a cleaning agent comprising an ethanolamine-based alkaline agent, which is formed from a two-component curable adhesive.

In the package containing the cleaning agent of the present invention, the adhesive film does not deteriorate even though the content contains an ethanolamine-based alkaline agent, so that the laminate film forming the bag-like container is difficult to delaminate. Therefore, the appearance of the package is good over a long period of time.
Moreover, when this laminate film is provided with a barrier layer between the base material layer and the adhesive layer, it is possible to suppress the ethanolamine alkaline agent from passing through the laminate film. Therefore, the content (cleaning agent) can be prevented from being reduced, and the problem that the surface of the package is sticky can be solved.

Hereinafter, the present invention will be described in more detail. However, the present invention is not limited to the following forms, and various forms can be taken within the scope of the effects of the present invention.
The package with a cleaning agent of the present invention comprises a bag-like container made of a laminate film and a cleaning agent containing an ethanolamine alkaline agent.

≪Bag-like container≫
The bag-like container which is one of the components of the package of the present invention is made of a laminate film.
<Laminated film>
In the present invention, the laminate film used for the bag-like container includes at least a base material layer, an adhesive layer, and a sealant layer in order, and preferably further includes a barrier layer. A typical constitution of the laminate film of the present invention is (i) base material layer / adhesive layer / sealant layer, or (ii) base material layer / adhesive layer / barrier layer / adhesive layer / sealant layer.
In the configuration (ii), there are two adhesive layers, but the present invention specifies the adhesive layer on the inner side (sealant layer side) than the barrier layer. The adhesive layer on the outer side (base material layer side) than the barrier layer is not deteriorated by the alkali agent because the barrier layer prevents the ethanolamine alkaline agent from penetrating. Hereinafter, when it is necessary to distinguish the adhesive layer inside the barrier layer from the adhesive layer outside, the adhesive layer inside the barrier layer is referred to as “inner adhesive layer”, and the adhesive layer outside the barrier layer. The adhesive layer is referred to as the “outer adhesive layer”.
In addition, the laminated film used for this invention can also be equipped with another resin layer, a metal layer, etc. in the range with the effect of this invention.

(Base material layer)
As the base material layer in the laminate film of the present invention, the same material as the base material layer of the laminate film used in a general bag-like container can be appropriately adopted.
Examples of the base material layer include polyester films such as polyethylene terephthalate film and polybutylene terephthalate film, polypropylene films, 6-nylon films, 6,6-nylon films, MXD6-nylon films, 11-nylon films, 12-nylon films, and the like. It can be formed from a polyamide film. Moreover, it is also possible to form a base material layer from the multilayer film which laminated | stacked these films as needed.
The base material layer is preferably a biaxially stretched film in terms of heat resistance and impact resistance. The thickness of the base material layer is not particularly limited, but is usually about 5 to 30 μm. The film for forming the base material layer may be subjected to a printing process on the front surface or the back surface, and may be subjected to an easy tearing process or an antistatic process as necessary.

(Sealant layer)
As the sealant layer in the laminate film of the present invention, the same sealant layer as that of a laminate film used in a general bag-like container can be appropriately employed.
The sealant layer is mainly composed of polyolefin resin such as low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, ethylene-vinyl acetate copolymer, polypropylene, propylene-ethylene copolymer, polybutene, etc. It can form from the film. Among them, a film mainly composed of linear low-density polyethylene is suitable for the sealant layer of the present invention because it has excellent heat seal strength and exhibits high seal strength when a bag-like container is molded.
Although the thickness of a sealant layer is not specifically limited, Usually, it is the range of 10-300 micrometers, Preferably, it is 50-150 micrometers.

(Adhesive layer)
Conventionally, when packaging a content that easily penetrates into a laminate film, a polyester-based or polyester-polyurethane-based adhesive has been adopted as an adhesive for the laminate film. This is because if the adhesive layer has an ester bond having a large cohesive force, the layer becomes hard and is difficult to be attacked by the contents that have penetrated the sealant layer. However, the present inventors have found that when the content contains an ethanolamine-based alkaline agent, these adhesives cannot suppress delamination of the laminate film. This is thought to be due to the unique properties of ethanolamine.

First, since ethanolamine is a basic substance, it promotes hydrolysis of an ester bond (R-COOR ′).
Ethanolamine has an amino group (—NH ₂ ) in the molecule, but the nitrogen atom of the amino group has an unshared electron pair, and the portion of the unshared electron pair is in a δ-state. is there. On the other hand, in the ester bond, electrons are attracted to the oxygen atom side, and the portion of the carbonyl carbon opposite to the oxygen atom is in a δ + state. Therefore, the δ− portion of the nitrogen atom of the amino group and the δ + portion of the carbonyl carbon are easily attracted and easily cause an exchange reaction. Furthermore, ethanolamine has a hydroxyl group (—OH) in the molecule, but a molecule having a hydroxyl group is likely to undergo a transesterification reaction under acid or base conditions. Therefore, when ethanolamine is brought into contact with the adhesive layer having an ester bond, it is considered that the molecular weight of the adhesive is reduced by the exchange reaction, and the adhesive force is reduced.
Furthermore, ethanolamine also has properties as an alcohol. Alcohol is also used as a solvent for the adhesive, and has a property of dissolving the adhesive. Therefore, ethanolamine seems to swell ester adhesives and reduce adhesive strength.

  Therefore, in the present invention, in the configuration not provided with the barrier layer as described in (i) above, at least one adhesive layer, preferably all adhesive layers, polyether polyol and / or polyether polyurethane polyol are used. The main component is a two-component curable adhesive having a polyisocyanate as a curing agent. Further, in the configuration including the barrier layer as described in (ii) above, at least one inner adhesive layer, preferably all inner adhesive layers are mainly composed of polyether polyol and / or polyether polyurethane polyol, A two-component curable adhesive having a polyisocyanate as a curing agent is used. Since the polyether polyol and / or the polyether polyurethane polyol does not have an ester bond, it has a low polarity and hardly reacts with ethanolamine.

  In the present invention, known polyether polyols can be used. For example, two active hydrogen atoms such as ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, trimethylene glycol, 1,3-butanediol, 1,4-butanediol, 1,6-hexanediol, neopentyl glycol, etc. Examples thereof include polyethers obtained by addition polymerization of one or more monomers such as ethylene oxide, propylene oxide, butylene oxide, styrene oxide, epichlorohydrin, tetrahydrofuran, cyclohexylene, etc. by an ordinary method using one or more compounds having an initiator as an initiator. .

Moreover, what urethanized said polyether polyol can be used for polyether polyurethane polyol. Diisocyanates used for urethanization include aromatic diisocyanates (diphenylmethane diisocyanate, tetramethylxylylene diisocyanate, tolylene diisocyanate, prepolymers of low molecular glycols and the above aromatic diisocyanates, etc.); aliphatic diisocyanates (1,6- Hexamethylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, xylylene diisocyanate, lysine diisocyanate, prepolymers of low molecular glycols such as ethylene glycol and propylene glycol and the above aliphatic diisocyanates); alicyclic diisocyanates ( Isophorone diisocyanate, hydrogenated 4,4′-diphenylmethane diisocyanate, methylcyclohexylene diisocyanate, iso Propylidene dicyclohexyl 4,4′-diisocyanate, a prepolymer of low molecular glycols and the alicyclic diisocyanate); and a mixture of two or more thereof.
In addition, the adhesive layer mainly composed of polyether polyurethane polyol has higher cohesive strength of the resulting adhesive layer than the adhesive layer mainly composed of polyether polyol. hard.

The polyisocyanate used as a curing agent in the present invention is, for example, one having at least two isocyanate groups in one molecule such as an adduct, an isocyanurate (trimer), a buret, etc. Is mentioned.
The curing agent used in the present invention is, among these curing agents, aromatic polyisocyanates composed of aromatic diisocyanate monomers such as diphenylmethane diisocyanate, tetramethylxylylene diisocyanate, tolylene diisocyanate, particularly diphenylmethane diisocyanate monomer. An aromatic polyisocyanate is suitable. Aromatic polyisocyanates have an isocyanate group directly linked to an aromatic ring, which is an electron-attracting group, so the reaction activity of the isocyanate group is very high, contributing to making the resulting adhesive layer hard. .

The ratio of the hydroxyl group resulting from the polyether polyol and / or polyether polyurethane polyol as the main agent and the isocyanate group resulting from the polyisocyanate as the curing agent is preferably OH: NCO = 1: 1 to 1: 4, and 1: 1 to 1: 3 is more preferable.
It is desirable to dilute the main agent and the curing agent with a solvent prior to coating on the film for the base material layer. Solvents used for dilution include esters such as ethyl acetate, butyl acetate and cellosolve acetate, ketones such as acetone, methyl ethyl ketone, isobutyl ketone and cyclohexanone, ethers such as tetrahydrofuran and dioxane, and aromatics such as toluene and xylene. Examples include hydrocarbons, halogenated hydrocarbons such as methylene chloride and ethylene chloride, dimethyl sulfoxide, dimethyl sulfoamide and the like. Among these, it is preferable to use ethyl acetate in consideration of availability, dilution performance, ease of drying, and the like.

The application amount of the adhesive is preferably 1.5 to 5 g / m ^{2 in} solid content, and particularly preferably ² to 4 g / m ² . Usually, about 1.0~4.0g / ^{m 2} coating weight with a solvent type, a solventless type may be used in about 0.5 to 3.0 g / ^{m 2.}

(Barrier layer)
It is desirable that the laminate film used in the present invention further includes a barrier layer that prevents penetration of the ethanolamine alkaline agent.
The material of the barrier layer is not particularly limited as long as it can prevent the penetration of the ethanolamine alkaline agent. For example, a metal foil made of a metal such as aluminum, nickel, stainless steel, copper, or titanium can be used. Moreover, the vapor deposition film which vapor-deposited aluminum, aluminum oxide, and silicon oxide on base films, such as a biaxially-stretched polyethylene terephthalate film, can also be used. When using the said vapor deposition film, the range of 150-2000 mm is suitable for the thickness of a vapor deposition layer. As a base film for vapor deposition, polyester films such as polyethylene terephthalate film and polybutylene terephthalate film, and polyamide films such as 6-nylon film and 6,6-nylon film are preferably used, but are not limited thereto.

  Among these barrier layers, aluminum foil is particularly suitable as the barrier layer of the present invention because it is inexpensive and exhibits high barrier properties. When transparency is required for the laminate film, a film in which aluminum oxide or silicon oxide is vapor-deposited may be used as the barrier layer. In addition, although the thickness of a barrier layer is generally about 5-30 micrometers, it is not limited to this.

(Laminate film manufacturing method)
The laminate film used in the present invention can be produced by a conventionally known method. For example, (i) a laminate film having a structure of base material layer / adhesive layer / sealant layer has a polyether polyol and / or polyether polyurethane polyol, and a polyisocyanate, such as ethyl acetate, on the base material layer film. It can be produced by applying an adhesive diluted with a solvent, drying the adhesive, and then laminating a film for a sealant layer.
In the above-described method, the adhesive is applied to the base layer film. However, the adhesive may be applied to the sealant layer film, and then the base layer film may be bonded.

  Moreover, the film of the structure of (ii) base material layer / outer side adhesive layer / barrier layer / inner side adhesive layer / sealant layer is, for example, a base material layer film and a barrier layer film (deposition film) through the outer side adhesive layer. Or a metal foil, etc.) to produce a base film / outer adhesive layer / barrier layer laminated film, and then a sealant layer film is formed on the laminated film barrier layer via the inner adhesive layer. It can be manufactured by laminating. For the outer adhesive layer, a known dry laminating adhesive can be used without any particular limitation.

  Lamination of the base layer film and the barrier layer film can also be carried out by a sandwich lamination method without using an outer adhesive layer. Specifically, the molten resin can be extruded into a film on the base layer film (or on the barrier layer film), and the base layer and the barrier layer can be bonded by the resin.

≪Cleaning agent≫
The package of the present invention contains a cleaning agent containing an ethanolamine alkaline agent. Any ethanolamine-based alkaline agent can be used, and monoethanolamine, diethanolamine, triethanolamine, methylaminoethanol, and ethylaminoethanol are particularly suitable. Among them, the present invention is particularly effective for a cleaning agent containing an alkaline agent such as monoethanolamine or diethanolamine having a small molecular weight and high permeability to a laminate film. In addition, the cleaning agent in which these alkali agents are arranged has a very excellent cleaning power.

As long as the cleaning agent of the present invention contains an ethanolamine-based alkaline agent, other components are not particularly limited, and may include, for example, a surfactant, a solvent, a chelating agent, and the like. Examples of the surfactant include alkyl amine oxide and polyoxyethylene alkyl ether. Examples of the solvent include glycol ethers or alcohols. Examples of the chelating agent include citric acid.

  Further, in order to improve detergency, an alkali agent other than ethanolamine may be included. For example, alkali metal hydroxide such as sodium hydroxide or potassium hydroxide, carbonate such as calcium carbonate or sodium carbonate, silica It may contain silicates such as sodium silicate and potassium silicate. Furthermore, antiseptic | preservative, a natural extract, a fragrance | flavor, water etc. are added to the cleaning agent of this invention as needed.

The pH of the cleaning agent of the present invention is not particularly limited, but is preferably 10 or more, more preferably 10 to 13, and particularly preferably 11 to 13. A cleaning agent having a pH in the above range has a high blending ratio of an alkaline agent and is useful as a concentrated cleaning agent. The pH of the cleaning agent can be controlled by adjusting the blending amount of the alkaline agent in the cleaning agent.
It should be noted that a cleaning agent having a pH exceeding 10, particularly exceeding 11, must be prevented from adhering to the user's hand. Therefore, when enclosing a cleaning agent having a high pH in a bag-shaped container, it is desirable to employ a film having a barrier layer as a laminate film forming the bag-shaped container. The barrier layer prevents the alkaline agent of the cleaning agent from oozing out of the bag-like container.

≪Packaging body≫
The package of the present invention is obtained by enclosing the above-described cleaning agent in a bag-like container made of the above-described laminate film. For example, two rectangular laminate films are stacked with the sealant layer on the inside, and after heat-sealing three of the four sides, the bag is filled with a cleaning agent from one side that is not heat-sealed. It is obtained by heat-sealing the one side. It can also be obtained by making a bag in the form of a standing pouch with the upper part opened in advance, filling a cleaning agent from the opening, and sealing the opening.
In addition, using an automatic liquid packaging machine, the film may be bagged and filled with the contents while the laminate film is fed out from the laminate film roll wound up in a roll shape.

Hereinafter, based on an Example, this invention is demonstrated still in detail. In addition, evaluation of each Example and the comparative example was performed with the following method.
[Lamination strength]
The package containing the cleaning agent obtained in each example and comparative example was stored in an atmosphere at room temperature of 45 ° C. and humidity of 90% RH. The laminate strength between the layer and the sealant layer is measured. Specifically, a rectangular test piece having a width of 15 mm is cut out from the laminate film, the barrier layer and the sealant layer are peeled off at one side (side parallel to the width direction) of the test piece, and then the peeled portion is peeled off by a tensile tester. The adhesive strength (laminate strength) is measured by a 180-degree peeling method while increasing the distance between chucks at 100 mm / min. The measurement results are shown in Table 1. In addition, in order to use the laminate strength as a bag-like container, it is desirable that the laminate strength exceeds 3.0 N / 15 mm.
[Presence of delamination]
The package containing the cleaning agent obtained in each Example and Comparative Example was stored in an atmosphere of room temperature 45 ° C. and humidity 90% RH, and the appearance of the package was visually confirmed after 2 weeks and 4 weeks. X indicates that wrinkles were generated on the surface of the bag-like container due to delamination, △ indicates that wrinkles were slightly observed on the surface of the bag-like container, and ○ indicates that no wrinkles due to delamination were observed. The results are shown in Table 1.

In the examples and comparative examples of the present invention, the following adhesives were used.
Ether-based adhesive 1: a low-polymer composition comprising a polyether polyurethane polyol A as a main agent and a curing agent a mainly composed of the main agent A and an aromatic polyisocyanate, methylenebis (4,1-phenylenediisocyanate) (MDI). Cohesive force type adhesive ether-based adhesive 2: Highly composed of a polyether polyurethane polyol B as a main agent, and a main agent B and a curing agent b whose main component is tolylene diisocyanate (TDI) which is an aromatic polyisocyanate. Cohesive force type adhesive ester adhesive 1: Adhesive ester adhesive 2: Polyester polyurethane comprising polyester polyurethane polyol C as a main component and the main agent C and a curing agent c mainly composed of aliphatic polyisocyanate Polyol D as the main agent, the main agent D and tolylene diisocyanate Adhesive ester-based adhesive 3 comprising a curing agent d mainly comprising TDI): comprising a polyester polyurethane polyol E as a main ingredient, comprising the main agent E and a curing agent b mainly comprising tolylene diisocyanate (TDI). Adhesive ester-based adhesive 4: Adhesive comprising polyester polyurethane polyol F as a main agent, and comprising main agent F and curing agent b having tolylene diisocyanate (TDI) as main components

[Example 1]
A laminate of a 12 μm biaxially stretched polyethylene terephthalate film (hereinafter referred to as “O-PET”) and a 15 μm biaxially stretched nylon film (hereinafter referred to as “O—Ny”) was employed as the base layer film. Also, 7 μm aluminum foil is used as the barrier layer, and a film made of 120 μm linear low density polyethylene resin is used as the sealant layer film, and the base material layer (O-PET / outer adhesive layer / O-Ny) A film having a seven-layer structure of / outer adhesive layer / barrier layer / inner adhesive layer / sealant layer was produced.
The outer adhesive layer was formed from the ester adhesive 1 described above, and the inner adhesive layer was formed from the ether adhesive 1 described above.
The obtained laminate film is molded into a bag-like container, and an alkali agent composed of monoethanolamine, a surfactant, and a high-concentration type cleaning agent for oil stains (pH 11-13) containing a solvent are added to the bag-like container. To obtain a package containing a cleaning agent.

[Example 2]
A package with a cleaning agent was obtained in the same manner as in Example 1 except that the ether adhesive 2 was used for the inner adhesive layer.

[Comparative Examples 1-3]
A package with a cleaning agent for comparison was obtained in the same manner as in Example 1 except that ester adhesives 2 to 4 were used for the inner adhesive layer.

The package of Examples 1 and 2 using an ether adhesive as the inner adhesive layer located between the barrier layer and the sealant layer can be stored in an atmosphere of room temperature 45 ° C. and humidity 90% RH, The laminate strength was not greatly reduced, the bag-like container was not wrinkled, and the package surface was not sticky. In particular, the high cohesion type ether-based adhesive 2 did not show a decrease in laminate strength, and no wrinkles or the like entered the surface of the bag-like container.
On the other hand, the laminate strength in the packaging bodies of Comparative Examples 1 to 3 using an ester-based adhesive was good immediately after lamination, but greatly decreased with the lapse of time, and all delamination in 2 to 4 weeks ( Delamination). This is probably because monoethanolamine accumulated between the barrier layer and the sealant layer has altered (hydrolyzed) the ester adhesive.
From the above experiment, it was confirmed that when the content contains an ethanolamine-based alkaline agent, the adhesive layer does not have an ester bond and has a higher cohesive strength.

Claims (5)

In a package containing a cleaning agent in which a cleaning agent containing an ethanolamine-based alkaline agent is encapsulated in a bag-like container formed of a laminate film including at least a base material layer, an adhesive layer, and a sealant layer in order,
The adhesive layer is formed of a two-component curable adhesive comprising a main component mainly composed of polyether polyol and / or polyether polyurethane polyol and a curing agent mainly composed of polyisocyanate. A package containing detergent. The package with a cleaning agent according to claim 1, wherein the laminate film includes a barrier layer between the base material layer and the adhesive layer. The package with a cleaning agent according to claim 1, wherein the curing agent is an aromatic polyisocyanate. The package containing a cleaning agent according to any one of claims 1 to 3, wherein the ethanolamine alkaline agent is monoethanolamine and / or diethanolamine. A laminate film comprising at least a base material layer, an adhesive layer, and a sealant layer in order,
The adhesive layer contains an ethanolamine-based alkaline agent characterized in that the adhesive layer is formed of a two-component curable adhesive mainly composed of polyether polyol and / or polyether polyurethane polyol and polyisocyanate as a curing agent. Laminate film for packaging detergent.