JP2588252Y2 - Cap seal - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention is directed to a side covering a bottle opening to prevent and protect the lid and opening of the bottled product.
The present invention relates to a cap seal integrated with a top plate with a surface .

[0002]

2. Description of the Related Art Conventionally, liquid foods such as soft drinks, milk and soy sauce, and bottled products of liquid products such as lotion are sealed with an ordinary lid, and the opening and its surroundings are further heated. Covering means for covering with a cap seal made of a contractible material and closely contacting the opening by heat shrinkage is employed.
When a cap seal is used, the presence or absence of opening can be seen at a glance, and since the cap seal is in close contact with the bottle to prevent dust and dirt from entering, it can be provided very hygienically.

FIG. 4 shows a commonly used cap seal. FIG. 4A is a cross-sectional view of the same, and FIG. 4B is a cross-sectional view showing a use state when the cap seal is used for an opening of a milk bottle. In the figure, reference numeral 2 denotes a skirt portion made of a heat-shrinkable film, and 3 'denotes a top plate, which is usually a thick molded body made of the same material as that of the skirt portion. Generally, vinyl chloride is mainly used. 5 is a lip used for opening, 6 'is a perforation for inducing a break when opening, 8 is a bottle, and 9 is a lid for sealing the opening of the bottle 8.

As is apparent from FIG. 4, the cap seal 1 'has a structure in which a skirt portion 2 is fixed to a peripheral portion of a top plate 3' by, for example, heat fusion. The upper surface of the cap seal 1 'is formed in accordance with the opening of the bottle to be coated, but the skirt 2 is formed with a sufficient margin so as to easily cover the opening, and shrinks by heating during coating. And stick to the side of the bottle. A lip 5 provided on the cap seal, and a perforation 6 ′ provided over the entire length of the skirt portion 2 in a vertical direction from the base of the lip.
Is used to impart easy-opening properties. The lip is pulled, and a cut is formed vertically in the skirt 2 by the perforation.
The cap seal 1 'can be easily removed from the opening.

[0005]

However, conventional cap seals have the following problems. (1) Since the heat-shrinkable film on the skirt portion of the cap seal is thin and weak to impact, the peripheral edge of the upper surface of the cap seal is crushed and damaged. In addition, since the individual components are bulky and the coating process is automatically performed by a machine, the coating process is supplied in a state of stacking several tens of sheets (stacking). As a result, several sheets stick together and are used while overlapping. (2) If the top plate is intentionally bent to the extent that it will not be creased and placed into the bottle, it will be in close contact with the inner surface of the bottle because of its flat shape, making it very difficult to remove. Therefore, it becomes difficult to clean the bottle, which prevents reuse of the bottle.

An object of the present invention is to provide a cap seal that solves the above-mentioned problems, and specifically, when the peripheral edge of the upper surface of the cap seal is hardly crushed and the top plate hardly enters the bottle. The goal is to provide a cap seal that is easy to remove.

[0007]

According to the present invention, there is provided a top plate which is located on a bottle opening having an inner lid, covers the opening including the inner lid of the bottle, and is attached to a peripheral edge of the top plate. is, in close contact with the peripheral side surface of the bottle opening downwardly, a cap seal ing from the skirt portion of the heat-shrinkable resin film, top plate thickness 80-3
A cap seal, which is a resin molded body having a thickness of 00 μm and has a side surface that goes around the side surface of the bottle opening. In the present invention, the heat-shrinkable resin film has a tearing property in the vertical direction of the cap seal, a lip is provided at the lower end of the skirt, and a perforation is formed from the root of the lip to the middle of the skirt in the vertical direction. It is preferable from the viewpoint of easy opening.

[0008]

In the cap seal of the present invention, the top plate has side surfaces to reinforce the peripheral edge of the top surface of the cap seal, and the heat-shrinkable film wraps around the bottom of the side surface of the top plate due to heat shrinkage during the molding of the cap seal. In order to form a neck, it is further reinforced by a rib effect. By providing the side surface on the top plate, it becomes difficult to bend and it is difficult to fold. Further, when the bottle enters the bottle, the bottle has a side surface, so it is difficult to adhere to the inner surface of the bottle, and the bottle can be easily washed.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments of the present invention.

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a sectional view of a molding process thereof, and FIG. 3 is a perspective view and a sectional view of a used state. In the figure, 1 is a cap seal of the present embodiment, 2 is a skirt portion made of a heat-shrinkable film, 3 is a top plate, 3a
Denotes an upper surface portion, and 3b denotes a side surface portion. Reference numeral 4 denotes a neck, reference numeral 5 denotes a lip, and reference numeral 6 denotes a perforation provided in a vertical direction from the base of the lip 5 and provided halfway through the skirt portion 2. 7 in FIG. 2 is a mandrel for heat shrink molding, 8 in FIG. 3 is a bottle whose opening is covered with the cap seal of this embodiment, and 9 is a lid sealing the opening of the bottle.

As shown in FIG. 3, the cap seal 1 of the present invention completely covers the opening, including the lid 9 of the bottle 8, with the top plate 3, and further reaches the side of the opening. Therefore, the openings that are most easily damaged are the thick top plate 3 and the upper end of the skirt 2.
It will be covered twice . Moreover, the side portion 3 of the top plate 3
Since the heat-shrinkable film of the skirt portion 2 wraps around the lower end b, it is reinforced further below. Key of the present invention
The cap seal is stacked in the coating process.
Can be supplied, but the top plate 3 has side surfaces and the top plate
The skirt part 2 covers from the peripheral part to the side part of 3
Therefore, the periphery of the top plate 3 is rich in strength, and
It does not get inside the cap seal. In addition, top plate 3
Since the skirt 2 is firmly fixed, from the perforation
When tearing the film and removing it from the bottle,
Easily remove it from the bottle and separate it from the skirt 2
Can be removed. Deliberately remove top plate 3 from skirt 2
Even if it does, the top plate 3 itself has the side portion 3b, which improves the strength against bending , and is sufficiently larger than the opening of the bottle 8, so that it is difficult to put it into the bottle 8.
It is .

In the present invention, the heat-shrinkable film used for the skirt portion 2 is not particularly limited as long as necessary shrinkage can be obtained. For example, stretched polystyrene, polyethylene terephthalate, and vinyl chloride are preferably used. The material of the top plate 3 is a resin molded body,
Limited resin types, as long as they can withstand the process
Although it is not performed, it is a resin molding of the same material as the skirt 2.
Preferably . The thickness of the heat-shrinkable film and the top plate in the present invention is appropriately selected depending on the size and shape of the target bottle opening, but the heat-shrinkable film is difficult to heat-shrink if it is too thick, and breaks if it is too thin. To make it easier
Preferably 10 to 100 μm, more preferably 30 to 6
0 μm. In addition, the thickness of the top plate needs to be somewhat thick to maintain the strength, and when using a heat-shrinkable material, if it is too thin, it shrinks at the time of molding and it is difficult to form the desired shape Therefore, the range of 80~300μm
And preferably 100 to 200 μm.

As shown in FIG. 2A, in the cap seal forming step of the present embodiment, first, a top plate 3 having a side surface portion is placed on a mandrel 7, and heat shrinkage forming a cylindrical skirt portion is performed. Cover with a functional film. Next, by heating in this state, the film contracts so as to cover the mandrel, and comes into contact with the top plate 3 at the periphery of the side surface portion 3b and the top surface portion 3a of the top plate. Therefore, the top plate 3 and the skirt portion 2 are simultaneously contracted.
An adhesive may be applied to the top plate 3 in advance so as to perform the bonding, or may be heated and heat-sealed after contraction. In the present invention, since the top plate 3 has the side surface portion 3b, a step is formed at the lower end of the side surface portion, while the film contracts so as to eliminate the gap as much as possible.
The neck 4 is naturally formed as shown in FIG.

In this embodiment, a heat-shrinkable film having a tearing property in the vertical direction of the cap seal is used, so that the lip 5 is lightly pulled to tear the perforation 6, and the perforation to the upper surface can be obtained simply by making a cut. Even without it, the film can be easily torn and removed from the bottle.

[0015]

As described above, the cap seal of the present invention has the following effects by providing the side plate on the top plate. (1) The strength of the head of the cap seal has been improved, and the head is less likely to be damaged. Therefore, at the same time as the reliability of the cap seal is improved, multiple uses due to breakage in the conventional stacking state are prevented, and the yield of the coating process is improved. (2) It is difficult to separate the top plate and the skirt portion after opening because the adhesion between the top plate and the skirt portion is improved. It is. Also, even if you forcibly put it, it is not a flat plate, so it does not adhere to the inner surface of the bottle,
Easy to take out. Therefore, the washing operation becomes smooth, and the bottle can be efficiently reused. (3) When the opening of the bottle is covered with the cap seal of the present invention, the most fragile parts reaching the opening and the side surface of the bottle are firmly protected over a wide range. Damage to the opening due to impact can be prevented, and generation of defective products can be suppressed.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a molding process according to an embodiment of the present invention.

FIG. 3 is a diagram illustrating a use state of the embodiment of the present invention;

FIG. 4 is a view showing a conventional cap seal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'Cap seal 2 Skirt part 3 Top plate 3a Top plate upper surface part 3b Top plate side surface part 4 Neck 5 Lip 6, 6' Perforation 7 Mandrel 8 Bottle 9 Lid

Claims (1)

(57) [Scope of request for utility model registration] 1. A bottle located on a bottle opening having an inner lid ,
A top plate including an inner lid to cover the opening, attached to the periphery of the top plate, in close contact with the peripheral side surface of the bottle opening downwardly, Oh the name Ru cap seal and a skirt portion of the heat-shrinkable resin film
Thus, the top plate is a resin molded body having a thickness of 80 to 300 μm.
A cap seal having a side surface portion that turns around the side surface of the bottle opening portion.