JP2013129442A - Laminate tube for hair color one-pack agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package material for a hair color one-pack agent having high gas barrier properties usable for a hair color with high permeability and metal corrosive properties, and formed of a flexible packaging material.SOLUTION: A laminate tube for a hair color one-pack agent is characterized in that a body of the tube is composed of a laminate body laminated in the order of at least a sealant film/an extruded polyethylene layer/an anchor coat layer/a substrate film/a dry lamination adhesive/aluminum foil from the side near a content, and as an anchor coat agent, a compound in which a derivative of an isocyanate compound with an increased crosslinking degree with urea bonding as a starting end is used.

Description

  The present invention relates to a packaging material for hair coloring agents. In particular, the present invention relates to a laminate tube for one hair color agent that can be stored for a long period of time without causing discoloration due to oxidation of the contents and without causing delamination of the laminated film.

The hair color agent is selected by selecting a favorite color, and is mainly used by mixing two liquids at the time of use. However, as a container for one hair color agent, an aluminum metal tube is mostly used.
On the other hand, a polyethylene resin blow tube is generally used as a container for the hair color 2 agent, and it is necessary to separate the container for the hair color 1 agent from the container for the hair color 2 agent at the time of disposal after use.
In addition, when a metal tube made of aluminum is used as a container for one hair color agent, there is a problem in use that aluminum is broken during repeated use.
On the other hand, when the tube for hair color 1 agent was created with the laminate film, there was a problem that the laminate would peel off due to the strong permeability of the contents.

Since the hair color 1 agent is easily oxidized and discolored and has high permeability, the packaging material requires high gas barrier properties, and a metal tube is used. However, at the same time, it has high acidity or alkalinity and has corrosiveness to metals.
For this reason, the inner surface of a metal tube currently used as a packaging material is baked and coated with a corrosion-resistant resin such as an epoxy resin (see Patent Document 1).

However, using a metal tube as a container for one hair color agent also has the following problems.
That is, the unit price as a packaging material is expensive. In addition, it is very difficult to increase the filling speed of a filling machine that fills a metal tube with a hair color. In this respect, the cost is very high.
In view of the above-described problems with metal tubes, it has been desired to package a single hair color in a flexible container.

As a packaging material for hair coloring agents, aluminum foil and sealant film are bonded by extrusion of thermoplastic resin to prevent delamination by hair coloring agents and to prevent corrosion by performing chemical conversion treatment on the surface of aluminum foil. It is known to perform (refer patent document 2).
However, the chemical conversion treatment on the surface of the aluminum foil has a problem that the number of processing steps increases.

  Another measure is to prevent corrosion and delamination of the aluminum foil due to the penetration of the hair coloring agent by using ethylene vinyl monomer as the resin that adheres firmly to the aluminum foil and using the barrier resin layer and sealant film together. Is also known (see Patent Document 3).

  However, since the ethylene vinyl monomer, the barrier resin layer, and the barrier resin layer and the sealant film are bonded together with an adhesive, respectively, with an ordinary adhesive, each of the ethylene vinyl monomer, the barrier resin layer, the barrier resin layer, and the sealant film is used. There was a problem that delamination between layers could not be prevented.

In response to these problems, attempts have been made to prevent a decrease in the adhesive strength between phases by devising adhesives and processing methods.
For example, in the hair color packaging material of Patent Document 4, it can be used in one hair color agent having high permeability and metal corrosiveness, and a metal layer and plastic as a hair color one agent packaging material by a flexible packaging material. It has been proposed to use a thermal laminate for the method of bonding to the film layer.

  In the package proposed in Patent Document 5, the surface of the metal foil is treated as a laminate capable of maintaining the bag strength even when the alkaline contents are filled, and the hair dye It is said that a package that does not cause a decrease in adhesive strength even after packaging can be obtained.

  In the laminate of Patent Document 6, in a laminate in which at least an adhesive layer and a sealant layer are provided in this order on a substrate made of any of polyester resin, nylon resin, or polypropylene resin, As a laminate that has excellent adhesive strength to the material and does not decrease the adhesive strength between the base material and the sealant layer even if various strongly permeable contents containing volatile components and volatile components act It has been proposed to provide an adhesive layer and a sealant layer made of at least an isocyanate compound on a substrate.

These proposals are more advanced than conventional technologies by stabilizing the adhesion to the metal layer against alkaline contents and volatile components and using a resistant adhesive between the specific plastic substrate and the sealant layer. Is seen.
However, none of them is sufficient as a container that can satisfy all of the need for a high color barrier, the resistance to highly permeable contents, and the resistance to metal corrosion, which are required for a hair color container. Realization was required.

JP 2003-191935 A JP 2003-81285 A Japanese Patent Laid-Open No. 11-222261 JP 2009-227280 A JP 2006-1609 A JP 2005-335374 A

  It is an object of the present invention to provide a packaging material for one hair color agent using a flexible packaging material that can be used for a hair coloring agent having high gas barrier properties and high permeability and metal corrosivity.

For this purpose, the present inventor uses a laminate used for the body of the laminated tube as a special anchor coat (AC) agent (an urea compound derivative of an isocyanate compound) for the innermost sealant film and the outer base film. For the hair color agent having high gas barrier properties and high permeability and metal corrosivity The present invention has been completed by finding that it can be used as a flexible laminated tube.
This special AC agent has a solid content of 3% to 10% at the time of coating, and the coating amount after drying is 0.3 ± 0.2.
A thin film in the range of g / m ² is desirable.

  In addition, it is desirable to use an aluminum foil as a barrier base material provided in order to prevent discoloration of the hair coloring agent due to oxygen used in the laminate, in order to prevent reverse inflow of air (air bag) after discharging the contents, It has also been found that it is better to use an aluminum foil having a certain thickness (12 μm or more).

  Furthermore, it has been found that the neck portion of the laminate tube can more effectively suppress the discoloration of the hair coloring agent due to oxygen by inserting a laminate film containing aluminum foil or other barrier base material during compression molding of polyethylene. .

  This laminate film is composed of, for example, a sealant film / extruded polyethylene / special AC agent / base film / adhesive / barrier base material / adhesive / polyethylene from the side touching the contents. The same derivatives of isocyanate compounds as those used for the main body can be used.

  In the invention according to claim 1 of the present invention, the body portion of the tube is laminated in the order of at least a sealant film / extruded polyethylene layer / anchor coat layer / base film / dry lamination adhesive / aluminum foil from the side close to the contents. It is a laminated tube for a hair color 1 agent, which is made of the laminated body and uses an anchor compound as a derivative of an isocyanate compound with a urea bond as a starting point to increase the degree of crosslinking.

  The invention according to claim 2 of the present invention is characterized in that the derivative of the isocyanate compound is a bifunctional isocyanate monomer or a derivative of a trifunctional monomer of adduct, burette, or isocyanurate type. Item 2. A laminated tube for one hair color preparation according to Item 1.

The invention according to claim 3 of the present invention is characterized in that the coating amount of the anchor coat layer is in the range of 0.3 g / m ² ± 0.2 g / m ^2. It is a laminated tube for one agent.

  The invention according to claim 4 of the present invention is the laminate tube for hair color 1 agent according to any one of claims 1 to 3, wherein the aluminum foil has a thickness of 12 μm or more.

  The invention according to claim 5 of the present invention is characterized in that a face piece made of a laminate film containing an aluminum foil or a transparent vapor deposition film is inserted in the shoulder portion of the tube. It is a laminate tube for hair color 1 agent of description.

  The invention according to claim 6 of the present invention is that the laminate film is a polyethylene film / extruded polyethylene layer / anchor coat layer / base film / dry laminate adhesive / aluminum foil or transparent vapor deposited film / polyethylene layer from the side close to the contents. The laminated tube for hair color 1 agent according to claim 5, wherein the laminated tube has a layer structure of

  The invention according to claim 7 of the present invention is characterized in that the sealant film is made of a polyethylene resin or a polypropylene resin, and is a laminate for one hair color agent according to any one of claims 1 to 6. It is a tube.

The laminated tube for hair color 1 agent according to the present invention is such that at least the sealant film / extruded polyethylene layer / anchor coat layer / base film / dry lami adhesive / aluminum foil from the side closer to the contents of the tube body. It consists of laminates laminated in order, and the crosslinking degree is increased by starting with urea bonds with an isocyanate compound derivative as an anchor coating agent to increase the adhesion of the extruded polyethylene layer that adheres the base film and sealant film to the base film. Is used.

As an anchor coating agent, a derivative of an isocyanate compound with a urea bond as a starting point and a degree of cross-linking is used, so that the color changes when exposed to oxygen, and a container of hair color 1 that has strong permeability to packaging containers. Even when used as a laminated tube, it can be a laminated tube that does not cause discoloration or delamination due to long-term storage.
Further, since this anchor coat layer is formed of a thin layer of a derivative of an isocyanate compound, the anchor coat layer exhibits excellent laminate strength with respect to the film substrate.

  By using a polyfunctional component such as a bifunctional isocyanate monomer or a derivative of a trifunctional monomer of adduct, burette, or isocyanurate type as a derivative of the isocyanate compound used in the anchor coating agent, the urea bond was initiated. As a result, it is possible to increase the degree of cross-linking and enhance the resistance to strongly permeable components, thereby preventing the deterioration of adhesiveness.

  Since the laminated tube for hair color 1 agent according to the present invention has a dead hold property with the thickness of the aluminum foil contained in the structure of the body part being 12 μm or more, the contents are extruded and discharged. Oxygen inflow due to so-called air bag that occurs later can be prevented.

  The laminated tube for hair color 1 agent according to the present invention has an area other than the body part by inserting a face piece made of an aluminum foil having an oxygen barrier property or a laminated film containing a transparent vapor-deposited film on its shoulder part. Oxygen permeation can be suppressed, and discoloration and deterioration due to oxidation of the contents can be prevented.

  The laminate film used for this face may have the same structure as the laminate used for the body part, but since a dead hold property is not particularly required, a transparent deposited film having a deposited film of metal or inorganic compound formed on the surface may be used.

Laminate cross section for use in laminate tube barrel body according to the present invention Sectional view of another example of a laminated body used for a laminated tube body according to the present invention

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a schematic cross-sectional view of the layer structure of a laminate used for a body of a laminate tube for a hair color 1 agent according to the present invention.

  This laminate (1) has a sealant film (4) / extruded polyethylene layer (7) / anchor coat layer (6) from the side close to the contents when molded into a cylindrical body (the lower side in FIG. 1). ) / Base film (5) / dry lamination adhesive (3) / aluminum foil (2) are laminated in this order.

  As the anchor coating agent, a derivative of an isocyanate compound with a urea bond as a starting point and a high degree of crosslinking is used. Further, although not shown, a print layer, a coat layer for protecting the surface, or a polyethylene layer may be provided as necessary.

  The base film (5) constituting the laminate used for the laminate tube body of the present invention is a plastic film having heat resistance such as a polyester film such as polyethylene terephthalate and polyethylene naphthalate, a polyamide film such as nylon, and a polypropylene film. Is often used.

  There are various types of polyester film such as normal type, copolymerized type, and easy-adhesion type, nylon film normal type and easy-adhesion type, and polypropylene film with non-static type and static-proof type. However, any type of film can be used as a substrate as long as surface treatment such as corona treatment is performed on one surface of the surface and an adhesive layer can be stably formed thereon.

  Further, the thickness is not particularly limited. Usually, a stretched film obtained by biaxial stretching is used, and a thickness of 12 μm to 50 μm is desirable. The base film may be a single layer using only one kind from the above or a multilayer using two or more kinds.

As the material of the metal foil (2) used in the present invention, aluminum, copper, iron, stainless steel and the like can be used. Among them, aluminum is particularly desirable from the viewpoint of versatility and flexibility.
Moreover, since the pinhole is more likely to be generated as the metal foil is thinner, the thickness is preferably 7 μm to 20 μm in order to ensure necessary barrier properties. In order to prevent oxygen inflow due to the air bag that occurs after the contents are pushed out and discharged, it is more preferable that the aluminum foil has a thickness of 12 μm or more to ensure the dead hold property.

The substrate film (5) is laminated via the metal foil (2) and the adhesive layer (3). However, the laminating method is not particularly limited and can be laminated with the metal foil. Any method is acceptable.
Usually, a dry laminating method, a non-solvent laminating method, a polyethylene extrusion laminating method and the like can be mentioned. In particular, a dry laminating method using a urethane-based adhesive is common.

On the other hand, the anchor coat (AC) layer (6) provided on the inner surface of the base film (5) is a derivative of an isocyanate compound having a urea bond as a starting point and an increased degree of crosslinking.
Examples of the derivative of the isocyanate compound constituting the AC layer (6) include 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, xylylene diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, 4,4′- Specific examples include various diisocyanate monomers such as diphenylmethane diisocyanate and hydrogenated products thereof.

  In addition, adduct types obtained by reacting these diisocyanate monomers with trifunctional active hydrogen-containing compounds such as trimethylolpropane and glycerol, burette types obtained by reacting with water, and trimers utilizing self-polymerization of isocyanate groups ( A trifunctional derivative such as an isocyanurate type or a polyfunctional derivative higher than that can also be used.

This AC layer (6) is provided on the surface of the base film (5) by applying a coating liquid containing, for example, the above-mentioned isocyanate compound derivative in a solid content ratio of 3 wt% to 10 wt%. Just do it.
The AC layer (6) is preferably a thin layer. Specifically, the AC layer (6) may be provided so that the coating amount when dried is a thin layer of 0.3 g / m ² ± 0.2 g / m ^2. .

On the other hand, the sealant layer (4) provided on the AC layer (6) through the extruded polyethylene layer (7) is a layer made of a polyethylene resin or a polypropylene resin.
Specifically, high density polyethylene, low density polyethylene, linear low density polyethylene, medium density polyethylene, ethylene-α olefin copolymer and other ethylene resins, homo-block / random polypropylene resins, propylene- Propylene resin such as α-olefin copolymer, ethylene-α, β unsaturated carboxylic acid copolymer such as ethylene-acrylic acid copolymer and ethylene-methacrylic acid copolymer, ethylene-methyl acrylate and ethylene-acrylic Esterified products of ethylene-α, β-unsaturated carboxylic acid copolymers such as ethyl acrylate, ethylene-methyl methacrylate and ethylene-ethyl methacrylate, ethylene-α, β cross-linked with carboxylic acid sites with sodium ions and zinc ions Ionic cross-linked product of unsaturated carboxylic acid copolymer, ethylene-maleic anhydride Acid anhydride-modified polyolefins typified by ternary copolymers such as acid graft copolymers and ethylene-ethyl acrylate-maleic anhydride, epoxy compound-modified polyolefins such as ethylene-glycidyl methacrylate copolymers, ethylene- It is provided by a single substance or a blend of two or more resins selected from vinyl acetate copolymers.
You may add various additives (Antioxidant, a tackifier, a filler, various fillers, etc.) to these structural materials as needed.

  The shoulder portion of the laminate tube according to the present invention is made of a polyethylene resin by compression molding. In this case, a face piece made of a laminate film containing an aluminum foil or a transparent deposited film is inserted in order to provide oxygen barrier properties.

The same laminate as that used for the tube body can be used as the laminate film for the face.
Moreover, since it is a site | part which does not require dead hold property, the structure which does not use aluminum foil is also possible. However, in that case, it becomes necessary to use a transparent vapor-deposited film or the like as the gas barrier layer in order to compensate for the decrease in barrier properties caused by not using the aluminum foil.

As the gas barrier layer, a resin film having gas barrier properties or a gas barrier film in which a gas barrier layer is separately provided on the surface of the base film is used.
For example, ethylene-vinyl alcohol copolymer film (EVOH), polyvinyl alcohol resin film (PVA), ethylene-vinyl acetate copolymer (EVA) saponified film, polyethylene terephthalate resin (PET), polyamide resin (PA ), A film obtained by coating polyvinylidene chloride resin (PVDC) on a film such as polypropylene resin (PP), a transparent deposited film provided with a deposited thin film layer of an inorganic oxide such as silicon oxide or aluminum oxide, or one of these films A laminated film combining seeds or more can be used.

  As described above, the laminated tube according to the present invention has been described. However, the laminate of the present invention is not limited to the one having the above-described configuration, and the rigidity required as the packaging material in consideration of the use as the packaging material. For the purpose of improving the durability and the like, another layer may be interposed.

Moreover, the laminated tube of such a structure can be produced as follows, for example.
That is, as one of the production methods, an aluminum foil is bonded to one surface of a base film using an adhesive for urethane-based dry laminate, and an isocyanate film is applied to the opposite surface where surface treatment such as corona treatment of the base film is performed. An AC layer is provided by applying a coating solution prepared by adding a derivative of the compound so that the solid content ratio is 3 wt% to 10 wt% in the coating portion of the extrusion laminate.

  Thereafter, a sealant film made of linear low density polyethylene is laminated on the AC layer via a low density polyethylene layer extruded from a T die, and a metal foil / dry laminate adhesive layer / base film / AC layer is laminated. Examples thereof include a method for obtaining a laminate having a configuration of / extruded polyethylene layer / sealant layer.

  As another production method, an isocyanate compound derivative is added at an anchor coating agent coating portion of a coating apparatus immediately after in-line corona treatment on one side of a base film laminated with aluminum foil on one side. An AC layer is formed by applying a coating solution containing the solution, and ozone treatment is appropriately applied to the surface of the sealant layer that contacts the AC layer through polyethylene extruded from a T die, and then the substrate is formed through the AC layer. By laminating the material film and the sealant layer, there can be mentioned a method of obtaining a laminate having further improved interlayer laminate strength and excellent resistance to various strongly permeable contents.

  The temperature under the die at this time is preferably in the range of 250 ° C to 330 ° C. Below 250 ° C, even if ozone treatment is applied, the interlayer laminate strength becomes insufficient due to insufficient oxidation of the extruded resin, and when it exceeds 330 ° C, the cohesive strength of the extruded resin decreases due to thermal decomposition, resulting in insufficient interlayer laminate strength. Become.

As the ozone treatment conditions at this time it is ^preferably in the range of ^{5mg / m 2 ~20mg / m 2} . If it is less than 5 mg / m ² , the interlayer laminate strength is insufficient due to insufficient oxidation of the extruded resin, and if it exceeds 20 mg / m ² , the cohesive force of the extruded resin is reduced due to excessive oxidation, resulting in insufficient interlayer laminate strength. .
By appropriately combining the above extrusion temperature and ozone treatment conditions, it is possible to obtain a laminate having improved interlayer laminate strength and excellent resistance to various strongly permeable contents.

  According to the production method as described above, the laminate strength between various base materials and the sealant layer is good, and the contents can be prevented from oxidative deterioration. A laminate used for a laminate tube can be produced in which the laminate strength with the layer does not decrease.

  Hereinafter, some embodiments of the laminated tube of the present invention will be described by way of examples. FIG. 2 shows a schematic cross-sectional view of the layer structure of the laminate used in the laminate tube body part according to this embodiment.

<Example 1>
As the laminate (20) used for the laminate tube body, antistatic linear low density polyethylene 80 μm / extruded polyethylene 40 μm / stretched polyethylene terephthalate film 12 μm / ink / adhesive / milk white polyethylene 80 μm / extruded polyethylene 20 μm / aluminum A laminate film having a structure of 15 μm foil / adhesive / 15 μm nylon film / 0.3 g / m ² AC layer / 20 μm extruded polyethylene / 80 μm linear low density polyethylene was prepared (see FIG. 2).

Each layer of the laminate film (20) was laminated by a conventional method.
The AC layer (30) was formed by gravure coating using a 5% solid content coating solution of tolylene diisocyanate (TDI) adduct.
That is, the coating which prepared the tolylene diisocyanate (TDI) adduct body so that the solid content ratio might be 5 wt% on the corona treatment surface of the 15-micrometer-thick stretched nylon film (29) which gave the corona treatment as a to-be-coated surface. While forming the AC layer (30) by coating the liquid, a low-density polyethylene (31) having a thickness of 20 μm was extruded by extrusion lamination at a temperature under the die of 320 ° C. and a processing speed of 80 m / min, and the sealant was applied onto the AC layer. A linear low-density polyethylene (thickness: 80 μm) serving as the layer (32) was laminated to obtain a laminate constituting the trunk body.

The laminate film used for the shoulder face of the laminate tube has a structure of extruded polyethylene 20 μm / aluminum foil 15 μm / adhesive / nylon film 15 μm / AC layer 0.3 g / m ² / extruded polyethylene 20 μm / linear low density polyethylene 80 μm. A laminate film was prepared.

  The layer structure of this laminate film is the surface layer, that is, the antistatic linear low density polyethylene (21), the extruded polyethylene (22), the stretched polyethylene terephthalate film (23), from the laminate used for the body part shown in FIG. The configuration is such that the adhesive (24) and milk-white polyethylene (25) are excluded.

The laminate film was punched into a predetermined circular shape having a diameter of 40 mm to create a face piece. The AC layer was formed by gravure coating using a coating solution of 5% solid content of tolylene diisocyanate (TDI) adduct.
The laminate film for the tube body was tubed to a tube having a diameter of 40 mm, a face piece was inserted during shoulder molding, and finally the mouth was sealed with aluminum foil to obtain a laminate tube.

<Example 2>
A coating liquid of 5% solid content of a burette body of hexamethylene diisocyanate (HDI) was used in place of a coating liquid of 5% solid content of tolylene diisocyanate (TDI) adduct as the coating liquid of the AC layer Obtained a laminated tube in the same manner as in Example 1.
<Example 3>
Implemented except that 5% solid content of hexamethylene diisocyanate (HDI) trimer was used instead of 5% solid content of tolylene diisocyanate (TDI) adduct as the coating solution for AC layer A laminate tube was obtained in the same manner as in Example 1.
<Example 4>
Instead of 5% solid content of tolylene diisocyanate (TDI) adduct as a coating liquid for AC layer, 5% solid content of a mixture of xylene diisocyanate (XDI) adduct and isophorone diisocyanate (IPDI) trimer A laminated tube was obtained in the same manner as in Example 1 except that the coating solution was used.
<Example 5>
Solid content of mixture of hexamethylene diisocyanate (HDI) burette body and hexamethylene diisocyanate (HDI) trimer body instead of coating liquid of 5% solid content of tolylene diisocyanate (TDI) adduct body as coating liquid for AC layer A laminate tube was obtained in the same manner as in Example 1 except that 5% coating solution was used.
<Example 6>
Instead of 5% solid content of tolylene diisocyanate (TDI) adduct body as the coating liquid for AC layer, 5% solid content of mixture of xylene diisocyanate (XDI) adduct body and isophorone diisocyanate (IPDI) adduct body A laminated tube was obtained in the same manner as in Example 1 except that the coating solution was used.

<Comparative Example 1>
A laminate tube in the same manner as in Example 1 except that a two-component urethane AC agent was used as the AC layer coating solution instead of the 5% solid content coating solution of tolylene diisocyanate (TDI) adduct. Got.
<Comparative example 2>
A laminate tube was obtained in the same manner as in Example 1 except that the face piece was not inserted during the shoulder molding.

The laminate tubes prepared in Examples 1 to 6 and Comparative Examples 1 and 2 were filled with one hair color agent, and after storage at 40 ° C. for 6 months, the contents were checked for color change and delamination (peeling). The results are shown in Table 1.

  In the laminated tube (Example 1 to Example 6) for the hair color 1 agent of the present invention, aluminum foil is used in the constitution of the trunk body and the shoulder, and the discoloration due to oxidation of the hair color 1 agent as the contents Although the laminate tube of Comparative Example 2 did not use a barrier layer such as aluminum foil during the construction of the shoulder portion, discoloration occurred in one hair color agent near the shoulder portion.

  In addition, since the laminated tubes of Examples 1 to 6 use a derivative of an isocyanate compound with a urea bond as a starting point and increase the degree of cross-linking as the coating liquid, the occurrence of delamination is suppressed. In the laminated tube of Comparative Example 1 using a normal two-pack type urethane AC agent as the working liquid, delamination with time has occurred.

  As is clear from the above results, according to the laminated tube for hair color 1 agent according to the present invention, it can be used in hair color agents having high gas barrier properties and high permeability and metal corrosivity. Thus, it has become possible to provide a packaging material for a hair color 1 liquid preparation using a flexible packaging material.

  The laminated tube for hair color 1 agent of the present invention is not discolored due to oxidation of the contents, and does not cause delamination of the laminated film constituting the tube. It can be applied to a wide range of contents that are both corrosive and corrosive.

DESCRIPTION OF SYMBOLS 1 ... Laminate 2 ... Aluminum foil 3 ... Dry lamination adhesive 4 ... Sealant film 5 ... Base film 6 ... Anchor coat layer 7 ... Extruded polyethylene layer 20 ... Laminate 21 ... Antistatic linear low density polyethylene (LLDPE)
22 ... Extruded polyethylene 23 ... Stretched polyethylene terephthalate film 24 ... Adhesive 25 ... Milky polyethylene 26 ... Extruded polyethylene 27 ... Aluminum foil 28 ... Adhesive 29 ... Stretched nylon film 30 ... AC layer 31 ... Extruded polyethylene 32 ... Linear low density polyethylene (LLDPE)

Claims (7)

  The body part of the tube consists of a laminate in which at least the sealant film / extruded polyethylene layer / anchor coat layer / base film / dry laminate adhesive / aluminum foil are laminated in this order from the side close to the contents. A laminate tube for a hair color agent, which is a derivative of an isocyanate compound and uses a urea bond as a starting point and has a higher degree of crosslinking.   2. The hair color 1 preparation according to claim 1, wherein the derivative of the isocyanate compound is a bifunctional isocyanate monomer or a derivative of a trifunctional monomer of an adduct, burette, or isocyanurate type. Laminated tube. The laminated tube for a hair color agent according to claim 1 or 2, wherein the anchor coat layer is applied in an amount of 0.3 g / m ² ± 0.2 g / m ² .   The laminate tube for one hair color agent according to any one of claims 1 to 3, wherein the aluminum foil has a thickness of 12 µm or more.   The laminate for a hair color 1 agent according to any one of claims 1 to 4, wherein a face made of a laminate film including an aluminum foil or a transparent vapor deposition film is inserted in a shoulder portion of the tube. tube.   The laminate film is composed of a layer structure of polyethylene film / extruded polyethylene layer / anchor coat layer / base film / dry laminate adhesive / aluminum foil or transparent deposited film / polyethylene layer from the side close to the contents. Item 6. A laminated tube for one hair color preparation according to item 5.   The said sealant film consists of a polyethylene-type resin or a polypropylene-type resin, The laminated tube for hair color 1 agent of any one of Claim 1 to 6 characterized by the above-mentioned.

Images