JPH0542956A - Fitting lid for container - Google Patents

Abstract

PURPOSE:To provide a fitting lid for container, by which an odor in the atmosphere at a store such as supermarket or drug store, etc., is not transferred. CONSTITUTION:The subject fitting lid 1 for container consists of a lid main body 9 made of an injection molded body of a polyethylene terephthalate resin and a fitting part 10 of a polyethylene resin which is formed in such a manner that a skirt part which vertically hangs from the peripheral edge of a top part 7 of the lid main body 9 is embedded in the fitting part 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fitting lid for a container used as a container for storing foods, seasonings, powdered milk such as dry milk and the like.

[0002]

2. Description of the Related Art Mating lids used for containers such as bottles, metal cans, plastic containers, etc. for containing foods, seasonings, powdered milk such as dry milk, etc. have a simple manufacturing process and are inexpensive. In addition, since the fitting lid itself can be freely attached to and detached from the container, an injection molded body of polyethylene resin is used. The recloseable fitting lid in the fitting lid for the container is usually engaged with the top of the container in an overcap type state with respect to the sealed container in which the filling is contained. It is used for reclosing the outlet formed on the top of the container by the consumer for taking out the item.

[0003]

The fitting lid for a container having the above-mentioned structure is engaged as a recloseable fitting lid in a state of an overcap type with respect to a sealed container, and is used in a mass retailer, a pharmacy or the like. When placed on the display shelves of a retail store, the odor in the atmosphere in a mass retailer, a pharmacy, or the odor of other products is adsorbed and absorbed by the fitting lid for this container. For this reason,
The container with which the fitting lid for this container is engaged emits an unpleasant odor, or the purchaser of the product with which the fitting lid for this container is engaged is part of the filling material. When the fitting lid for the container is used as the fitting lid for recloseable after consuming, the odor absorbed and absorbed by the fitting lid for the container is transferred to the internal filler remaining in the container. This is a factor that reduces the product value.

On the other hand, the present invention has a detachable fitting property similar to the conventional fitting lid for a container made of an injection molded body, and moreover, has an atmosphere in a store such as a volume store or a pharmacy. (EN) Provided is a fitting lid in which the odor therein does not transfer to the fitting lid for a container.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems by providing a fitting lid for a container, which comprises a lid body made of an injection molded body of polyethylene terephthalate resin and a fitting portion made of polyethylene resin. To do.

In the fitting lid for a container of the present invention, a label can be attached to the top of the lid main body made of an injection molded polyethylene terephthalate resin, if desired.

When a label is attached to the top, a resin layer having adhesive properties with the polyethylene terephthalate resin to be injection-molded, that is, a resin made of polyester resin, ethylene-vinyl acetate copolymer resin, or the like. Using a label having a layer as a back surface layer, an integrally molded body in which a label is attached to the top of the lid main body at the same time as the injection molding of the lid main body with polyethylene terephthalate resin, that is, the lid main body and the label It is preferable to make it into a body. The lid main body made of polyethylene terephthalate resin having a label attached to the top is obtained by inserting the label into the molding die in advance in the step of molding the lid main body made of polyethylene terephthalate resin by injection molding. Be done.

When the label is attached to the top of the lid main body made of polyethylene terephthalate resin, the label may be attached to the entire top of the lid main body, or the label 1 may be attached to the top of the lid main body. It may be attached to the part. However, it is preferable that the label itself attached to the top of the lid body also has odor non-absorption and non-adsorption properties.
For example, when the odor non-absorption performance of a biaxially stretched polyethylene terephthalate resin film or the like is used, 2
It is preferable that the label having the axially stretched polyethylene terephthalate resin film as the surface layer of the label is attached to the entire top of the lid body.

In the fitting lid for a container of the present invention, the fitting portion made of polyethylene resin is formed of a resin having a bending elastic modulus of 3000 kg / cm ² or less from the viewpoint of the fitting performance of the fitting portion with respect to the container. Preferably, a polyethylene resin is used.

A method for obtaining a fitting lid for a container according to the present invention, which comprises a lid main body made of an injection molded body of polyethylene terephthalate resin and a fitting portion made of polyethylene resin, is as follows.
A so-called two-color molding method in which a lid body made of polyethylene terephthalate resin is injection-molded and then a fitting portion is made of polyethylene resin. A so-called insert injection molding method in which a fitting portion is molded by inserting it into a molding die and performing injection molding of polyethylene resin, and further, a lid main body made of an injection molded body of polyethylene terephthalate resin and a polyethylene resin It is possible to use a method in which the fitting portion made of an injection-molded body is separately molded and then the two are joined.

[0011]

EXAMPLE A specific structure of a fitting lid for a container of the present invention will be described.
A manufacturing example will be described with reference to FIGS. 1 to 3.

Example 1 In [FIG. 3], a middle core layer 2 made of high-quality paper having a basis weight of 110 g / m ² and a decorative print on the surface, and a middle core layer 2 laminated on the surface of the middle core layer 2. A surface layer 3 made of a biaxially stretched polyethylene terephthalate film having a thickness of 16 μm, and a coating layer of a hot lacquer having a main component of ethylene / vinyl acetate copolymer coated on the back surface of the core layer 2 (7 g (d
A laminated sheet 5 for a label with a back surface layer 4 made of ry) / m ² ) was obtained.

Next, in FIGS. 1 and 2, a single label 6 obtained by punching the laminated sheet 5 into a disk shape having a diameter of 10 cm was obtained.

Thereafter, the single label 6 is placed in an injection molding die for molding a lid body by a movable die and a fixed die,
After setting so that the surface layer 3 of the label 6 is in contact with the surface of the cavity, the mold is clamped, and the label 6 is attached to the surface by injection molding with a molten polyethylene terephthalate resin. The top part 7 that is worn and the skirt part 8 that hangs from the peripheral edge of the top part 7.
And a lid main body 9 having a polyethylene terephthalate resin part having an average thickness of 1.0 mm was obtained.

The injection molding of the lid body 9 made of molten polyethylene terephthalate resin in this embodiment is performed at a cylinder temperature of 290 ° C. and an injection pressure of 100 Kgf / cm ² mold temperature.・ ・ ・ ・ ・ ・ ・ ・ It was performed at 20 ° C.

Then, after the lid body 9 is inserted into an injection molding die for molding the fitting portion, the skirt portion 8 of the lid body 9 is buried substantially at the center by injection molding of a molten polyethylene resin. By forming the fitting portion 10 made of polyethylene resin, a fitting lid for a container, which is an embodiment of the present invention indicated by reference numeral 1, is obtained.

Example 2 By injection molding of polyethylene terephthalate resin, a lid body having a circular top and a skirt hanging down from the periphery of the top and having an average wall thickness of 1.0 mm was obtained.

Subsequently, the lid main body is inserted into an injection molding die for molding the fitting portion, and then a polyethylene resin in which the skirt portion of the lid main body is substantially centered is formed by injection molding of a molten polyethylene resin. The fitting portion is the first embodiment.
By molding by a process similar to the process corresponding to, a fitting lid for a container, which is another embodiment of the present invention, was obtained.

Comparative Example 1 In the structure of Example 1, a molten polyethylene resin was used instead of the molten polyethylene terephthalate resin as the resin for injection molding of the lid body, and other configurations were the same as those in Example 1. The same process yielded a mating lid for the container for comparison.

[Test] The fitting lids for the respective containers obtained in Examples 1 and 2 and Comparative Example 1 were overlaid on the top surface of the metal can for dry milk as a recloseable fitting lid. After mating with the cap type, it was left on the display shelf of the pharmacy for 3 months, and the fitting lid for the container of the example product did not transfer the odor of the atmosphere in the pharmacy, but The fitting lid for the container had a shift of the odor of the atmosphere inside the pharmacy.

[0021]

The fitting lid for a container of the present invention comprises a lid body made of an injection-molded body of polyethylene terephthalate resin and a fitting portion made of polyethylene resin. The lid body is made of polyethylene terephthalate resin. A highly non-absorptive action is achieved with respect to the odor in the atmosphere in which the container with which the fitting lid is engaged is placed.
Therefore, when a product in which the fitting lid is engaged with the container in which the inner filler is enclosed is displayed and sold at a store such as a mass retailer or a pharmacy, the odor caused by the atmosphere in the store is Does not move to a fitting lid for a container, and does not reduce the commercial value.

Since the fitting portion of the container of the present invention is formed of polyethylene resin, the fitting lid is elastic like the conventional fitting lid for containers made of polyethylene resin. Is provided, the fitting lid and the container can be freely attached and detached, and the elastic force of the polyethylene resin allows the container to be engaged with the container with a sufficient fitting force. It

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a fitting lid for a container according to the present invention.

FIG. 2 is a model cross-sectional view illustrating a state of a skirt portion and a fitting portion of a lid body in the fitting lid for the container of FIG.

FIG. 3 is a cross-sectional view schematically illustrating a laminated structure of a label used in the fitting lid for the container of FIG.

[Explanation of symbols]

1 Lid for container 2 Core layer of label 3 Surface layer of label 4 Back layer of label 5 Laminated sheet for label 6 Label 7 Top of lid body 8 Skirt of lid body 9 Injection molded polyethylene terephthalate resin Main body consisting of 10 Fitting part made of polyethylene resin

Claims (1)

[Claims] 1. A fitting lid for a container, comprising a lid main body made of an injection-molded body of polyethylene terephthalate resin and a fitting portion made of polyethylene resin.