JP2002120858A - Separable lid material - Google Patents

Abstract

(57) [Problem] To provide a lid material which can be sealed by a one-step seal and can be separated into a ventilation layer and a barrier layer. A base film (11) and a sealant base (12)
And a sealant film 14 formed by forming a vapor-deposited thin film layer 13 of an inorganic substance on the adhesive layer 15 with the vapor-deposited thin film layer 13 inside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover material for a fragrance container, and more particularly to a separation material which can be used to separate only a base film from a container and leave the sealant film side as a container cover material. Regarding possible lids.

[0002]

2. Description of the Related Art Conventionally, fragrances used indoors such as toilets for the purpose of deodorizing, etc., contain contents such as dehumidifiers and fragrances in a plastic molded container with a flange, and open the opening. By covering with a gas-permeable lid material made of heat-sealing nonwoven fabric, a perforated film, or a paper treated with a heat-sealing varnish, the contents are not spilled, and the moisture or the aromatic component is covered with the gas-permeable lid material. It can pass through. Further, in order to seal the air permeability of the air-permeable lid material until use, the air-permeable lid material is further made of polyethylene terephthalate (PET) / aluminum foil (Al).
/ Polypropylene (PP), PET / Al / PET / P
P, Al / heat seal varnish, PET film with a transparent cover thin film layer of silicon oxide or aluminum oxide (VMPET) / heat seal varnish. Have been done.

However, in this method, two kinds of lid materials, a gas-permeable lid material and a barrier lid material, are hermetically sealed in a container using a sealing method such as heat sealing. However, there are problems that the processing cost is high and the cost of the lid material is high due to the use of two types of lid materials.

[0004]

According to the present invention, the inner layer is made of PP
Focusing on the above problems relating to the lid material of a flanged fragrance container made of a resin, the lid material can be sealed by one-step seal, and can be separated into a ventilation layer and a barrier layer. The task is to provide.

[0005]

According to the first aspect of the present invention, a base film and a sealant film formed by forming a vapor-deposited thin film layer of an inorganic substance on a sealant substrate are provided with the vapor-deposited thin film layer inside. A separable lid material, wherein the lid material is laminated via an adhesive layer.

[0006] As described above, the base film and the sealant film obtained by forming a vapor-deposited thin film layer of an inorganic substance on the sealant substrate are laminated via the adhesive layer with the vapor-deposited thin film layer inside. When the lid material is to be peeled off from the container, the vapor-deposited thin film layer of the sealant film adheres to the substrate film side, and the substrate film is peeled off while the sealant substrate remains in the container. It will be separated from the material.

According to a second aspect of the present invention, in the first aspect of the present invention, the sealant film obtained by forming a vapor-deposited thin film layer of an inorganic substance on the sealant substrate is formed by forming a vapor-deposited thin film layer of aluminum. A separable lid member, which is a stretched polypropylene film.

As described above, as a sealant film formed by forming a vapor-deposited thin film layer of an inorganic substance, unstretched polypropylene (C) formed by forming a vapor-deposited thin film layer of aluminum is used.
When using the PP) film, when the lid material is to be peeled from the container, the deposited thin film layer of the CPP film adheres to the substrate film side, and the substrate film is peeled off while the CPP film remains in the container. Then, the base film and the CPP film are separated from each other.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A separable lid according to the present invention will be described in detail based on an embodiment. For example, as shown in FIG. 1, the separable lid material of the present invention is obtained by placing a base film 11 and a sealant film 14 in which a vapor-deposited thin film layer 13 is formed on a sealant substrate 12 such that the vapor-deposited thin film layer 13 is opposed to the sealant film 14. It has a structure of being laminated via an adhesive layer 15.

The base film 11 is not particularly limited, but may be a polyethylene terephthalate (PET) film,
A biaxially oriented polypropylene (OPP) film, an oriented nylon (ONy) film, a VMPET film and the like can be preferably used. Further, the base film 11 may be a single layer,
It may have a multilayer structure in which the above-described plastic films, papers, and the like are appropriately combined and combined. Further, a print layer 16 may be provided on the base film 11 as necessary.

As the sealant film 14, a CPP film provided with a vapor-deposited thin film of aluminum can be preferably used. In this case, the CPP film is applied to the sealant substrate 12.
And the deposited thin film of aluminum corresponds to the deposited thin film layer 13.

The thickness of the sealant substrate 12 is 15 to 40 μm.
m is preferable. Further, the sealant substrate may be a single-layer product or a multi-layer component.

Base film 11 and sealant film 1
Reference numeral 4 is laminated via the adhesive layer 15, and becomes the separable lid member 10 of the present invention. The surface of the base film 11 on which the printed layer 16 is provided and the surface of the sealant base 12 on which the thin film layer 13 is provided are laminated so as to face each other.

As a method for laminating the two films, a generally known laminating method such as a dry laminating method, a non-sol laminating method and an extrusion laminating method is used. At this time, the adhesive layer 15 becomes the adhesive layer 15 in the dry laminating method and the non-sol laminating method, and the adhesive layer 15 becomes the melt extruded resin in the extrusion laminating method.

Base film 11 and sealant film 1
4 is required to be stronger than the adhesive strength between the sealant substrate 12 and the deposited thin film layer 13.

The side of the base film 11 which is in contact with the adhesive layer 15 is preferably subjected to a surface treatment in advance in order to improve the adhesiveness with the adhesive layer and the print layer.

As shown in FIG. 2, the lid 10 thus manufactured is placed on the opening of the molded container 20 and hermetically sealed using a flange 21 provided on the periphery of the container.

As the molding container 20, for example, a tray formed by sheet-forming a composite sheet made of PP / ethylene vinyl alcohol copolymer resin (EVOH) / PP, a cup formed by injection-molding a PP resin, and the like can be preferably used. In any case, the surface in contact with the lid material must be PP resin.

The hermetic seal is made of a sealant base material 13 for a lid material.
And the PP resin surface of the molding container 20 are fused, and a generally known sealing method such as a heat sealing method, an impulse sealing method, and an ultrasonic sealing method may be used. In addition, it is convenient at the time of use to provide a knob or the like in advance on the lid material.

To check the openability of the molded container in which the lid material is hermetically sealed, the lid material 10 was peeled off by holding a knob, and the lid material 10 was placed between the vapor-deposited thin film layer 12 and the sealant substrate 13. After peeling, the sealant substrate 13 remained on the molding container side, and the lid material 10 was separated into the substrate film 11 and the sealant substrate 13 (see FIG. 3). In addition, by applying the release varnish layer 17 partially to a portion corresponding to the knob of the base material film in advance, a release trigger is formed and separation becomes easy.

[0021]

The present invention will be described more specifically with reference to the following examples. <Example 1> A 16 μm-thick PET film which had been subjected to corona discharge treatment in advance as a base film 11 was prepared, a print layer 16 was provided at a necessary portion of a corona discharge treatment surface, and a part of an edge was provided. Was provided with a release varnish layer 17.

Separately, as the sealant film 14, a transparent evaporated thin film layer 13 of aluminum oxide having a thickness of 25 μm
A CPP film (VMCPP film) 12 provided with was prepared.

The surface of the base film 11 on which the print layer 16 is provided and the surface of the sealant film 14 on which the vapor-deposited thin film layer 13 is provided are opposed to each other. To form a lid material of Example 1. The adhesive was applied except for the portion where the release varnish layer was provided (see FIG. 1).

<Example 2> A 30 μm thick OPP which was previously subjected to corona discharge treatment as the base film 11
A film is prepared, a printing layer 16 is provided on necessary portions of the corona discharge treated surface, and a release varnish layer 17 is provided on a part of the edge.
Was provided.

Separately, a 30 μm thick VMCPP film was prepared as the sealant film 14.

The surface of the base film 11 on which the print layer 16 is provided and the surface of the sealant film 14 on which the vapor-deposited thin film layer 13 is provided are opposed to each other via a polyether resin-based adhesive as the adhesive layer 15. Laminated by sol lamination method,
The lid material of Example 2 was used. The adhesive was applied except for the portion where the release varnish layer was provided.

Example 3 A substrate film having a thickness of 12
Prepare a vapor-deposited plastic film (GL film, manufactured by Toppan Printing Co., Ltd.) in which a silicon oxide vapor-deposited thin film layer is provided on a μm PET film. A release varnish layer was provided on a part of the sample.

Separately, a sealant film having a thickness of 3
A 5 μm VMCPP film was prepared.

In the same manner as in Example 1, the surface of the base film on which the print layer is provided and the surface of the sealant film on which the vapor-deposited thin film layer is provided are opposed to each other, and a two-component reaction type polyester resin Lamination was performed by a dry lamination method with an adhesive in between to obtain a lid material of Example 3. The adhesive was applied except for the portion where the release varnish layer was provided.

Two types of molding containers were prepared: a tray with a flange formed by sheet molding a composite sheet made of PP / EVOH / PP, and a plastic cup with a flange formed by injection molding of PP resin. 160 ° with the material facing the CPP film surface
C, pressure: 2.0 × 10 ⁵ Pa for heat sealing. When peeled from the knob piece, in any of the configurations of Examples 1 to 3, at the peel trigger, the peeling varnish layer printed on the base film and the VMCPP film are peeled off at the interface, but the peeling interface is other than at the peeling varnish coating portion. The film migrated between the vapor-deposited thin film layer and the CPP film, and finally the lid material of the CPP film alone remained on the molding container.

[0031]

As described above, the number of the lids of the present invention can be reduced from two to one, so that the production cost can be reduced and the filling line can be simplified. In comparison, cost reduction is possible. By selecting the thickness and grade of the VMCPP film, the amount of perfume volatilized from the contents and the amount of absorbed moisture can be adjusted. Since the CPP film itself serves as a cover for protecting the contents during use, the form of the contents is not selected as compared with a conventional nonwoven fabric cover or a perforated film cover. There is little danger of liquid contents flowing out. In addition, foreign substances can be prevented from being mixed during use.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view showing an embodiment of a separable lid member according to the present invention.

FIG. 2 is an explanatory cross-sectional view showing a state where the detachable lid member of the present invention is put on a molded container and hermetically sealed.

FIG. 3 shows a state in which a lid member is peeled off from a molding container.
It is sectional explanatory drawing.

[Explanation of symbols]

 Reference Signs List 10 cover material 11 base film 12 sealant base 13 evaporated thin film layer 14 sealant film 15 adhesive layer 16 printing layer 17 release varnish layer 20 molding container 21 ‥‥ Flange

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E067 AA03 AA11 AB97 BB11A BB12A BB16A BB25A BC07A CA03 CA04 CA24 EA06 EA36 GD08 3E084 AA05 AA24 AB10 BA02 BA06 BA07 BA08 BA09 CC02 CC03 CC05 CC07 CC12 FD13 GB12 GB17 GB12 GB12 3E086 AD24 BA04 BA13 BA15 BB01 BB51 BB52 CA35

Claims (2)

[Claims] 1. A separation method comprising the steps of: laminating a base film and a sealant film obtained by forming a vapor-deposited thin film layer of an inorganic substance on a sealant substrate via an adhesive layer with the vapor-deposited thin film layer inside. Possible lid material. 2. A sealant film formed by forming a vapor-deposited thin film layer of an inorganic substance on a sealant base material is an unstretched polypropylene film formed by forming a vapor-deposited thin film layer of aluminum. Separable lid material.