JP2001063729A - Container lid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lid which has unevenness and protrusions on a resin layer on the surface, and wherein a design or the like is beautifully printed. SOLUTION: This lid is a lid which is attached to the opening of a container main body, and is equipped with a laminated film, 10 and a resin layer 11. The laminated film 10 includes a printed layer 10d on the surface side of which, a design or the like is printed. The resin-layer 11 is transparent, and has a thickness, which is thicker than the laminated film 10. Then, the resin layer 11 is injection-molded on the surface side of the laminated film 10. Also, the resin layer 11 has unevenness or protrusions on the surface side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container lid attached to an opening of a container body, and more particularly to a container lid having irregularities or protrusions on a surface resin layer.

[0002]

2. Description of the Related Art When foods and the like are stored for a long period of time, metal cans and plastic containers having gas barrier properties are used in order to maintain their quality. Recently, when a metal can is used, a substance suspected of being a hormone-disrupting substance (so-called environmental hormone) may be eluted from a coating agent or a compound on the inner surface, so that a plastic container is often used.

A container lid mounted on the container body of such a plastic container is disclosed in, for example, Japanese Patent Application Laid-Open No. 5-778.
There is an easily-openable container lid disclosed in JP-A-56-56 and JP-A-6-345088. In these container lids, a tab for opening is provided on the upper surface in the same manner as a metal can which has been widely marketed conventionally. The consumer can open the container by pulling on the tab.

[0004]

The containers provided with the container lids as described above are currently on the market, but cannot be said to be widely used. One reason for this is that many of the conventional container lids are made white by putting a master batch or the like in resin in order to maintain a hygienic image, but they give consumers an inorganic image in appearance, Lack of luxury.

Therefore, conventionally, a method has been adopted in which an overcap is provided to design the overcap itself, or a printed matter is sandwiched between the container lid and the overcap. However, if the design is applied to the overcap itself, the cost of the overcap increases, and if a printed material is inserted, it is difficult to produce a sense of quality without a sense of unity.

On the other hand, it is conceivable to directly print or attach a printed film on the surface of the resin layer of the container lid as conventionally performed on the side surface of the container body. However, as described above, the surface of the container lid is provided with irregularities such as projections such as tabs and slits for opening, so it is extremely difficult to print and attach a film, and the appearance of the container lid is improved. It is difficult to give a sense of quality.

[0007] An object of the present invention is to provide a container lid having irregularities or projections on a resin layer on the surface, the container lid being provided with a beautifully printed pattern or the like.

[0008]

According to a first aspect of the present invention, there is provided a container lid attached to an opening of a container body, comprising a base material and a resin layer. The base material includes a print layer on which a pattern or the like is printed on the front side. The resin layer is transparent and thicker than the substrate, and is laminated on the front side of the substrate. The resin layer has irregularities or protrusions on the front side.

In the container lid of the present invention, a transparent resin layer is laminated on the front side of the substrate. Therefore, the pattern or the like on the front side of the printing layer included in the base material can be seen from the front side of the container lid through the resin layer. And here,
Since the base material including the printing layer is laminated on the back side of the resin layer, not on the front side of the resin layer having irregularities or protrusions, it is easy to make the container lid clearly printed with a pattern or the like.

In the case where a substrate such as a film printed on the front side of the resin layer is laminated, there is a high possibility that the picture or the like is thinned or scraped by retort treatment or rubbing. Since the resin layer is laminated on the front side of the above, it plays a role of protecting the portion where the resin layer is printed. Therefore, the container lid according to the present invention is less likely to cause fainting or scraping of the print due to abrasion or the like.

As described above, the container lid according to the present invention is one in which a picture or the like is clearly printed, and the commercial value of the container is improved. The picture or the like includes a picture, a character, a symbol, and the like, and specific examples include a product name, a logo, a figure or an explanatory note, a photograph, a barcode, and the like indicating a method of opening the container. A container lid according to a second aspect is the container lid according to the first aspect, wherein the thickness of the resin layer is 0.5 mm or more.

In this case, the thickness of the resin layer is 0.5 mm or more, and the strength of the container lid is reliably maintained by the resin layer. Usually, the thickness of the resin layer of the container lid is set to 0.5
mm to about 1.0 mm. The container lid according to claim 3 is the container lid according to claim 1 or 2, wherein the resin layer is formed by injecting and filling a resin into a mold in which the base material is set, so that the front side of the base material is provided. Laminated.

In this case, when the resin layer is injection-molded, the resin is injected and filled while the base material is set in the mold,
A resin layer thicker than the base material is laminated on the front side of the base material. Thus, the container lid taken out of the mold can be viewed from the front side of the printed contents (pictures and the like) on the printed layer of the base material through the resin layer. The container lid according to claim 4 is the container lid according to any one of claims 1 to 3, wherein the base material is a plastic film on which a pattern or the like is printed in advance.

According to a fifth aspect of the present invention, there is provided the container lid according to the first to third aspects.
5. The container lid according to any one of the above, wherein the base material is obtained by attaching a seal to the base material. The seal contains a resin on which a picture or the like is printed. The container lid according to claim 6 is the container lid according to any one of claims 1 to 3, wherein the base material has a pattern printed thereon by applying ink to a surface of a plain base material. .

Here, ink is applied to the surface of a plain base material. For example, a printer that applies ink by jetting or a plotter that plots with a pen may be used. The container lid according to claim 7 is the container lid according to any one of claims 1 to 6, wherein the resin layer is colored and has transparency.

Here, a dye is added to a transparent resin, and a thinly colored resin layer is laminated on the substrate. Thereby, the inorganic image of the resin is suppressed, and in addition to the fact that a picture or the like is attached, it is possible to give the container lid a sense of quality.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <Outline of Container Lid> FIG. 1 shows a top view of a container lid (hereinafter simply referred to as a lid) according to an embodiment of the present invention. FIG. 2 shows a II-II section of FIG. FIG.
Shows a lid 1 and a part of the container body 2 to which the lid 1 is attached. The container composed of the lid 1 and the container main body 2 has gas barrier properties, and can store food sealed inside for a long period of time.

The lid 1 covers the opening 2a of the container body 2 to seal the food contained in the container body 2, and includes a disk-shaped panel portion 5 and an outer peripheral portion of the panel portion 5. And a flange portion 6 formed at the bottom. A score portion 7 formed of an annular groove having a predetermined depth is formed at these boundaries. (Panel section) The panel section 5 is formed from a gas barrier laminated film (base material) 10 and a resin layer 11 having the surface of the laminated film 10 coated by injection molding. Because the laminated film 10 is a thin film and the strength alone is insufficient, the laminated film 10
The resin layer 11 having a thickness ta (see FIG. 3) of about 0.8 mm is coated. Here, as the resin layer 11, generally transparent polypropylene is used. Also,
Here, the thickness ta of the resin layer 11 is set to 0.8 mm. However, in the case of the lid 1 having a diameter of less than 10 cm, the thickness ta of the resin layer 11 needs to be about 0.5 mm to 1.0 mm in order to secure strength.

As shown in the sectional view of FIG. 3, the laminated film 10 is a laminated film in which resin films 10b and 10c are laminated on both front and back surfaces of an aluminum foil 10a having gas barrier properties. The laminated film 10 is a film on which printing is performed in advance, and a printing layer 10d is formed between the aluminum foil 10a and the resin film 10b. This printing layer 10d has a front surface (resin layer 11).
On the side surface), a company logo 81 including the letters "ISHIDA" and a pineapple picture 82 indicating the contents are printed (see FIG. 1). The thickness tb (see FIG. 3) of the laminated film 10 is about 80 μm to 150 μm. Note that, instead of the aluminum foil 10a, another metal foil or a resin having gas barrier properties as used for the container body 2 may be used.

An opening handle 12 is formed on the upper surface of the panel portion 5 so as to extend in the opening direction (right direction in FIG. 2). The handle 12 has one end connected to a surface on the opening start side of the panel portion 5 via a thin hinge portion 13, and has a hole 12 a on the other end for a finger to be taken when opening. The handle 12 is arranged with a predetermined gap from the surface of the panel portion 5 except for the fixed portion on one end side.

In the panel section 5, near the hinge section 13 on the opening start side, a slit 5 is provided in a direction orthogonal to the opening direction.
a is formed. A pair of holding legs 14 are formed on both sides of the other end of the handle 12 so as to be adjacent to the handle 12.
The tip of the holding leg 14 is locked to 2b.
By locking the holding legs 14 in the locking recesses 12b, the handle 12 can be held in a posture substantially parallel to the surface of the panel portion 5.

A protrusion 15 is formed adjacent to the tip of one end of the handle 12. This protrusion 15
A ridge 15a formed outside the slit 5a and extending along the slit 5a; a pressing reinforcing portion 15b formed to extend outward from the center of the ridge 15a; have. A gap is provided between the ridge 15a and one end of the handle 12 so that the handle 12 can be raised.

Further, a pair of projections 16 are formed on the other end side (opening end end side) of the panel section 5. These projections 16 are for facilitating storage when the lids 1 are stacked and stored, and are formed at the same height as the projections 15 formed on one end side of the panel portion 5. . In addition, the slit 5a formed in the panel part 5, the handle 1
2. The holding legs 14, the projections 15, and the projections 16 are formed integrally with the panel 5 by injection molding.

(Flange Part) The flange part 6 has a laminated film 10 continuous from the panel part 5 and a resin layer 20 having the surface of the laminated film 10 coated by injection molding. Although described later, the flange 6
The resin layer 20 and the resin layer 11 of the panel section 5 are integrally formed by injection molding using a one-point gate mold.

The flange portion 6 is attached to the periphery of the opening of the container main body 2, and has an inner cylindrical portion 6 a along the inner peripheral wall of the container main body 2 and an upper surface extending outward from the upper end of the inner cylindrical portion 6 a. It comprises a portion 6b and an outer cylindrical portion 6c extending downward from the outer peripheral end of the upper surface portion 6b. The inner cylindrical portion 6a and the upper surface portion 6b have a two-layer structure of the laminated film 10 and the resin layer 20, while the outer cylindrical portion 6c is formed only of the resin layer 20.

(Score part) The score part 7 includes the flange part 6
Is formed at the boundary between the inner cylindrical portion 6a and the outer peripheral end of the panel portion 5, and most of the annular groove is formed to a depth such that the laminated film 10 is exposed as shown in FIG. .
However, a part of the score portion 7 has such a depth that the laminated film 10 is not exposed. That is, in this portion, the resin layer 11 of the panel portion 5 and the resin layer 20 of the flange portion 6 are continuous. For this reason, as described above, the resin layer 11 of the panel 5 and the flange 6
And the resin layer 20 can be integrally formed at the same time.

When performing the injection molding of the resin layers 11 and 20, the laminated film 10 preformed in the sectional shape shown in FIG.
The resin is injected and filled into the mold so as to cover 0. <Operation When Opening Lid> Next, the operation when opening the lid 1 will be described.

At the time of opening, a finger is put on the hole 12a of the handle 12 and the other end of the handle 12 is pulled up from the upper surface of the panel portion 5. The handle 12 rotates about the hinge portion 13, and an end surface on one end side of the handle 12 abuts on the ridge 15 a of the protrusion 15. When the handle 12 is further raised from this state, the protrusion 1
The pressing reinforcing portion 15b of 5 pushes a region outside the slit 5a of the panel portion 5 downward, thereby causing a part of the score portion 7 to be torn as shown in FIG.

After that, when the handle 12 is pulled upward,
The panel part 5 is separated from the flange part 6 along the score part 7. When the panel portion 5 is further pulled up, the panel portion 5 is completely separated from the flange portion 6. <Characteristics of Lid of Present Embodiment> Here, a strong transparent resin layer 11 is coated on a thin laminated film 10. Therefore, a logo or a picture on the front side of the print layer 10d included in the laminated film 10 can be seen from the front side of the lid 1 through the resin layer 11 (FIG. 1). And here, the slit 5a, the handle 12, the holding leg 14,
Since the laminated film 10 including the printing layer 10d is arranged on the back side of the resin layer 11 instead of the front side of the resin layer 11 on which the projections and depressions such as the projections 15 and 16 are formed, avoid the projections and depressions. Cover 1 with logo 81 or picture 82 without the hassle of printing or attaching a print film, etc.
Can be clearly printed.

Further, when a film or the like printed on the front side of the resin layer 11 is adhered, there is a high possibility that the printed material may be fainted or scraped by retort treatment or rubbing of the container. Since the resin layer 11 is coated on the front side of the laminated film 10 including the resin film, the resin layer 11 plays a role of protecting the portion where the thick resin layer 11 is printed. Therefore, the lid 1 has a low possibility that the print is lightened or scraped due to abrasion or the like.

As described above, the cover 1 has the logo 81 on the panel 5.
The picture 82 is printed neatly, the inorganic image of the resin is suppressed, and the lid 1 has a high-class appearance, and the commercial value of the container is improved. [Other Embodiments] (A) In the above embodiment, the laminated film 10 in which the printing layer 10d is formed in advance between the aluminum foil 10a and the resin film 10b is used, but printing is performed on a plain laminated film. , The resin layer 11 may be injection-molded.

More specifically, as shown in FIG. 5, for example, a pattern or a bar code is printed by an ink jet printer on the surface of a plain laminated film 110 in which an aluminum foil 10a is sandwiched between resin films 10b and 10c. . And if the resin layer 11 is formed on this,
Since the printing surface is protected by the resin layer 11 and the aluminum foil 10a, there is no need to worry about the deterioration of the printing surface even when the water resistance of the ink is somewhat inferior.

(B) In the above embodiment, the printing layer 10d is previously placed between the aluminum foil 10a and the resin film 10b.
Is used, but a method may be adopted in which a seal made of resin printed on the laminated film is affixed, and the resin layer 11 is injection-molded thereon.

Specifically, as shown in FIG. 6, for example, a polypropylene film 70a having a print 70b printed thereon is laminated with a polypropylene film 70c, and an adhesive layer 70d is disposed on the back side of the seal 70. On the laminated film. And, on this, the resin layer 1
Once the seal 1 is formed, the seal 70 is protected by the resin layer 11 and the aluminum foil 10a, so that there is no need to worry about the deterioration of the print 70b without using a water-resistant seal. Note that the normal seal is used for the adhesive layer 70d.
However, in the case of the present invention, since it is good to adhere to the base material at least until molding, an adhesion method using, for example, static electricity can be used.

(C) In the above embodiment, the resin layer 20 of the flange portion 6 and the resin layer 11 of the panel portion 5 are integrally formed by injection molding using a one-point gate mold.
Each of the resin layers 11 and 20 may be injection molded using a point gate mold. In this case, for example, the resin layer 11 can be formed of a transparent resin, and the resin layer 20 can be formed of a darkly colored resin.

(D) In the above-described embodiment, the company logo 81 and the pineapple picture 82 are printed on the print layer 10d. Various patterns and the like can be printed, such as photographs, barcodes, etc., that produce a sense of quality. Also, the resin layer 1
Regarding 1, the resin layer 11 is not limited to a colorless and transparent one, and the resin layer 11 may be colored or a slightly turbid resin may be used as long as the print is visible.

[0037]

According to the present invention, a transparent resin layer is laminated on the front side of the base material, and a pattern or the like on the front side of the printing layer contained in the base material can be seen from the front side of the container lid through the resin layer. I have to. Accordingly, the container lid can be made to have a beautifully printed pattern or the like without any trouble such as attaching a printed film on the front side of the resin layer having irregularities or protrusions. In addition, since the thick resin layer serves to protect the printed portion, there is little possibility that the printed portion will be dull or scraped due to abrasion or the like.

[Brief description of the drawings]

FIG. 1 is a plan view of a container lid according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged sectional view of a panel unit.

FIG. 4 is an operation diagram at the time of opening.

FIG. 5 is a view showing a printing operation on a laminated film according to another embodiment.

FIG. 6 is a cross-sectional view of a seal attached to a laminated film in another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lid (container lid) 2 Container main body 2a Opening 5 Panel part 5a Slit (unevenness) 10 Laminated film (base material: plastic film) 10a Aluminum foil 10d Printing layer 11 Resin layer 12 Handle (projection) 14 Holding leg (projection) Object; irregularity) 15 Projection (projection; irregularity) 16 Projection (projection: irregularity) 70 Seal 70a Paper 70d Adhesive layer

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Takao Yoshikawa, Inventor F-term (reference) at 959 Shimoda, Kurito-cho, Kurita-gun, Shiga Pref.

Claims (7)

[Claims] 1. A container lid attached to an opening of a container body, comprising: a base material including a print layer on which a pattern or the like is printed on a front side; And a transparent resin layer having an uneven surface or projections on the front side. 2. The container lid according to claim 1, wherein said resin layer has a thickness of 0.5 mm or more. 3. The container lid according to claim 1, wherein the resin layer is laminated on the front side of the base material by injecting and filling a resin into a mold in which the base material is set. 4. The container lid according to claim 1, wherein said base material is a plastic film on which a pattern or the like is printed in advance. 5. The base material according to claim 1, wherein a seal containing a resin on which a picture or the like is printed is attached to a plain base material.
4. The container lid according to any one of items 1 to 3. 6. The method according to claim 1, wherein the base material is formed by applying ink on the surface of a plain base material and printing a picture or the like.
A container lid according to any one of the above. 7. The container lid according to claim 1, wherein said resin layer is colored and transparent.