JPH0734840Y2 - High frequency heating sealed container with knob - Google Patents

Description

[Detailed description of the device]

[001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency heat-sealed container provided with a knob for facilitating peeling of a sealing material which is heat-bonded to a container mouth from the container mouth.

[002]

2. Description of the Related Art In a conventional heat-sealed container, for example, as shown in Japanese Patent Publication No. Sho 49-25869, a sealing material is heat-sealed on the upper surface of the opening of the container body, and the sealing material and the container opening are It is generally known that a cap is attached to the cap, and when the sealing material is peeled off, a thin, soft and slight portion of the outer periphery of the end of the sealing material is picked up by a finger and removed.

[003]

In a high-frequency heating sealed container, if the width of the non-adhesive portion outside the mouth end of the container main body is widened and the seal portion is melt-bonded and sealed, high-frequency induction heating is performed. Due to the characteristics of, the heat generation of the outer periphery of the sealing material is the strongest, so the outer periphery is excessively heated, the outer periphery of the sealing material burns, the film laminated on the metal foil of the sealing material separates, the outer periphery of the sealing material When the inner wall of the cap is fused, the appearance and performance of the product will be impaired.

The present invention eliminates these problems found in high-frequency heat-sealed containers and, at the time of sealing, impairs the product appearance and performance at normal high-frequency induction energy levels and without lowering the filling and sealing speed. It is an object of the present invention to provide a container that can be produced without using the sealing material, improves the opening operability when peeling and opening the sealing material, and can completely remove the sealing material from the container opening without breaking the sealing material.

[0095]

According to the present invention, there is provided a high-frequency heat-sealed container in which a container opening is hermetically sealed with a sealing material, and the sealing material and the container opening are covered with a cap. A knob member is provided between the cap and the seal material so as to cover the seal material, and the knob member has a plurality of knob portions located on the outer peripheral portion thereof and on the outer periphery of the seal material. It is characterized in that it is adhered to the knob member stronger than the adhesive strength with the mouth.

In this case, the sealing material is a metal foil having thermoplastic resin layers on the front and back, the knob portion is thicker than the sealing material and has rigidity, and the knob member is provided with a plurality of protrusions for temporarily fixing the sealing material. A plurality of thin pieces are provided on the outer circumference of the knob portion for temporarily fixing the knob member to the cap by locking the protrusion ring provided inside the cap, and the sealing material is temporarily fixed. It is also possible to cover the mouth portion of the container with a cap having a knob portion.

In the knob portion of the present invention, the width of the non-adhesive portion sealing material on the outer periphery of the container body mouth end sealing portion is as in the conventional example
It is the minimum necessary and serves as a knob for peeling and opening the seal material, and the outer peripheral edge of the knob member covering the upper surface of the seal material is therefore positioned on the outer periphery of the seal material.

A cap containing a knob member to which the sealing material is temporarily attached is fitted into the mouth of the container body filled with the content liquid, and then passed through a high frequency, so that the sealing material is attached to the container mouth. Simultaneously with the fusion, the knob member on the upper surface of the sealing material is heat-bonded and integrated.

[0109]

Operation When the cap is removed during use, the mouth of the container body is sealed with the sealing material, and there is a knob member on the upper surface, but since there is a knob portion on the outer peripheral portion of the knob member, pull it to pull the container. Peel the seal from the mouth.

The adhesive strength between the upper surface of the seal material and the knob member is set to be larger than the adhesive strength between the lower surface of the seal material and the upper surface of the mouth of the container body, and the knob portion is divided into a plurality of parts. By lifting up, the peeling can be started from almost one point between the container opening on the outer periphery of the sealing portion and the sealing material without much difference from the peeling strength of the sealing material of the conventional heat-sealed container.

The width of the non-adhesive part from the seal part of the seal material to the outer peripheral edge can be set to a size as small as possible so that the part is held by the knob member and does not fall off. Heated,
There is no need to intensify the high-frequency energy or reduce the sealing speed, and the appearance is well-sealed.

Further, the knob portion at the periphery of the sealing material is thicker than the sealing material and has rigidity, so that it can be easily picked and can be peeled from any direction of the periphery.

[0113]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view in half section showing the appearance and structure of the container of this example. This container is a container body 1 made of synthetic resin.
And a sealing material 2 for sealing the mouth 10 of the container body 1.
And a knob member 3 that is bonded to the surface of the sealing material 2 and is integral with the sealing material, and a cap 4 that covers the knob member 3 and the mouth 10 of the container body 1.

The container body 1 is formed thicker than the mouth portion 10 and is provided with a bottomed body portion 13 via a screw portion 12 having a screw 11 on an outer surface to be screwed into the screw 40 of the cap 4.

The sealing material 2 is slightly larger than the size of the container mouth 10, and the structure is, for example, aluminum foil with ethylene.
It is formed by coating or overlaying a thermoplastic resin of vinyl acetate copolymer system. That is, the sealing material 2 has a metal layer 20 as an intermediate layer, and thermoplastic resin layers 21 and 22 convenient for the target material to be adhered are provided on both outer layers thereof (FIG. 4 ). It is heat-sealed to the upper end of the mouth portion 10 and the thin plate 30 of the knob member 3 described later (FIG. 1 ).

The knob member 3 is made of a thermoplastic resin having flexibility, and is shown in FIG. 3 (plan view of the knob member) and FIG. 4 (O- in FIG. 3).
A section view), FIG. 5 (OB section view in FIG. 3), FIG.
As shown in the sectional view taken along the line O-C in FIG. 3, a thin plate 30 having a size that covers the sealing material 2 is provided in the central portion, and the outer peripheral portion surrounds the sealing material and is thick and easy to pick. The knob portion 31 is divided into small pieces in the circumferential direction by the width, and an inwardly convex projection 32 for holding the sealing material 2 is provided on the inner wall surface of the knob portion 31. On the outer wall surface, there is provided a thin piece 33 protruding outward for temporarily fixing the knob member 3 to the inner top portion 41 of the cap 4.

Further, the knob portion 31 is vertically symmetrical with respect to the thin plate 30 so that the sealing material 2 can be mounted on either side of the thin plate 30,
When the knob member 3 is temporarily fixed to the cap 4, there is no directivity, and the knob portion is thick and rigid so that it can be easily picked. The protrusion 32 is provided only on one side of the knob portion 31, and the knob member 3 is attached to the cap 4.
You may give directionality when temporarily fixing.

Further, the knob portion 31 has a slit 3 in the radial direction.
Although the four thin plates 30 are divided by inserting 4 to facilitate bending, the slits may be widened in the circumferential direction to have a fan-shaped cutout shape. (Figure 3)

The slit 34 is the inner wall portion 3 of the knob portion 31.
In order to prevent breakage of the thin plate due to pulling up of the knob portion 31, the abutting portion with the thin plate 30 is provided with a tear preventing reinforcing wall 36 thickened in the vertical direction. (Fig. 6)

Further, the knob portion 31 is provided with the concave groove 37 along the circumferential direction to improve the catching of the finger, and at the same time, the thickness of the knob portion is not increased so that the moldability is improved. There is.

A protrusion 32 provided on the inner wall surface of the knob portion 31.
In order to improve the holding property of the sealing material, it is desirable that the surface 38 of the protrusion 32 with respect to the thin plate 30 be close to parallel to the thin plate. (Figure 4)

From the standpoint of formability, as shown in FIGS. 7 and 8, the protrusions 32 are not provided on the upper and lower surfaces of the same divided knob portion, but are alternately arranged on the upper side or the lower side of the thin plate 30. It is provided with a width of about 1/3 in the circumferential direction of the inner peripheral wall of the knob portion 31, has a width corresponding to the protrusion 32 that is the same as the circumferential width of the protrusion 32, and is not less than the radial convex height of the protrusion 32. By providing the hole 39 of 2.5 mm or less in the thin plate portion 30, it is possible to easily release the mold without deforming the shape of the seal holding projection 32 during molding. In this case, sealing and bonding are done in the hole 39
Will be performed on the inner side in the radial direction of. In FIG. 7, the sealing portion 24 between the container mouth portion 10 and the sealing material 2 is shown by the hatched portion.

The cap 4 is an injection-molded product made of synthetic resin, and is composed of a top portion 42 and a skirt 43 extending downward from the outer periphery of the top portion, and is formed inside the lower portion of the skirt portion 43. The formed screw portion 40 is screwed into the screw portion 11 formed in the mouth portion 10 of the container body 1 and is attached to the mouth portion 10 of the container body 1. A contact ring 44 having substantially the same diameter as the upper end of the mouth 10 of the container body 1 hangs on the inner surface of the top portion 42, and the outer peripheral portion of the contact ring 44 accommodates the split knob portion 31 of the knob member 3. There is a space.

A protrusion ring 45 is formed on the upper inner surface of the skirt portion 43, slightly below the lower end of the contact ring 44, and engages with the thin piece 33 provided on the outer periphery of the knob member 3. Then, the knob member 3 and the sealing material are held inside the cap top portion until the sealing material 2 adheres to the upper surface of the container body mouth 10 and the thin plate 30 of the knob member 3.

The type of adhesive resin on the surface of the sealing material so that the adhesive strength between the upper surface 21 of the sealing material and the thin plate 30 at this time becomes greater than the adhesive strength between the lower surface 22 of the sealing material and the mouth portion 10 of the container body. Has been selected.

Next, the operation of the example container will be described.

Inside the cap 4, the projection 32 for holding the sealing material of the knob member 3 is located on the side opposite to the inner surface of the cap top part with respect to the thin plate 30 of the knob member (when the projections 32 are on both upper and lower sides, (There is no need to distinguish), and then the sealing member is loaded into the knob member 3 from the surface 21 of the adhesive for adhering the sealing member to the knob member, and the protrusion 32 for holding the sealing member mounts and holds it in the knob member. Let The cap in this state is supplied to the filling process.

In the filling step, when the cap 4 is fitted and tightened on the threaded portion 12 of the container body 1 filled with contents, the knob member 3 inserted inside the cap 4 is inserted.
And the sealing material 2 are narrowed by the upper surface of the mouth portion 10 of the container body 1 and the lower surface of the contact ring 44 of the cap 4, and the lower surface 22 of the sealing material 2 and the upper surface of the mouth portion 10 of the container body 1 are in close contact with each other. The lower surface of the thin plate 30 of the knob member 3 and the upper surface 21 of the sealing material 2 are evenly adhered to each other.

In that state, by the high frequency induction heating device,
The cap 4 of the container is irradiated with a high frequency to heat the metal foil layer 20 of the sealing material 2 to soften and melt the thermoplastic resin layers 21 and 22 on both surfaces of the sealing material 2 by heat conduction, and at the same time, contact the respective portions. The heat softens and melts the upper surface 21 of the sealing material 2 to the thin plate 30 of the knob member 3, and the lower surface 22 to the upper surface 10 of the mouth portion of the container body 1.

When opening the heat-sealed container, as shown in FIG. 2, first, the cap 4 is removed, and the sealing material 2 and the knob member 3 are attached to the upper surface 10 of the mouth portion of the container body while being detached from the cap 4. Appears in the state.

Divided knob portion 31 of the knob member 3
By picking one or two of them with a finger and pulling up in the direction of the white arrow in FIG. 2, the adhesive strength between the knob member 3 and the sealing material 2 becomes Since the strength is set larger than the strength, peeling occurs between the upper surface 10 of the mouth of the container body and the sealing material 2.

When the divided knob portion 31 is lifted and opened, a twisting force is applied to the thin plate 30.
The slits 34 between the adjacent split knob portions 31 are thicker than the thin plate on the outer peripheral portion of the thin plate 30 and thinner than the thin plate so that the split knob portions 31 are not torn. A reinforcing wall 36 having a thick wall is provided so as not to hinder the bending of the thin plate when the split knob portion 31 is pulled up and opened.

Since the knob member 3 is divided into six equal parts (or more) around the entire circumference, it can be opened without requiring a large opening force from the beginning of opening to the completion of opening.

[035]

According to the present invention, the knob member is provided between the cap and the seal member so as to cover the seal member, and the knob member has the knob portion on the outer periphery thereof, and the seal member serves as the container mouth portion. Since it adheres to the knob member stronger than the adhesive strength of No. 3, it has good opening operability when peeling and opening the sealing material, and the sealing material can be completely removed from the container opening.

Since a plurality of dividing knobs for peeling the sealing material are provided, the opening can be performed from any direction, and the opening operation is easy and efficient.

When the container is opened, the sealing material is completely removed from the mouth of the container body, so that it is safe and does not cause any problems when drinking with a lip or when it is transferred to another container.

Since the sealing material can have a size slightly larger than the outside diameter of the mouth end of the container body, the induction heating energy can be efficiently concentrated on the sealing portion at the mouth end.

In the high-frequency heating seal, the non-sealing portion on the outer periphery of the sealing portion of the conventional sealing material is used as a peeling knob allowance.
Although it was not possible to provide a very large width, the present invention makes it possible to make a large knob that is thick and has good finger grip.

By radiating a high frequency, the sealing material seals the mouth end of the container body, and at the same time, the knob member can be fused to the other surface of the sealing material.

[Brief description of drawings]

FIG. 1 is a front view of a judgment surface of a high-frequency heat-sealed container according to an embodiment of the present invention.

FIG. 2 is a view showing a state in which, when the container shown in FIG. 1 is used, the split knob portion is pinched with a finger from a state where an overcap is removed and a sealing material is peeled off.

FIG. 3 is a plan view of a knob member.

FIG. 4 is a sectional view taken along line OA in FIG.

5 is a cross-sectional view taken along line OB in FIG.

6 is a sectional view taken along the line O-C in FIG.

FIG. 7 is a partial plan view in which the moldability of the sealing material holding protrusion of the knob member is improved.

8 is a sectional view taken along the line D-D ′ in FIG. 7.

[Explanation of symbols]

 1 Container Main Body 10 Container Mouth 2 Sealing Material 3 Knob Member 31 Knob Part 4 Cap

Claims (2)

[Scope of utility model registration request] 1. A high-frequency heat-sealed container in which a container mouth is sealed with a sealing material and the sealing material and the container mouth are covered with a cap, and the sealing material 2 is provided between the cap 4 and the sealing material 2. The knob member 3 is provided so as to cover the knob member 3, and the knob member 3 is provided with a plurality of knob portions 31 on the outer periphery thereof.
The knob portion 31 is thicker and more rigid than the seal material 2, and the seal material 2 adheres to the knob member 3 stronger than the adhesive strength with the container mouth portion 10. container. 2. The thermoplastic resin layer 2 is provided on the front and back sides of the sealing material 2.
The knob member 3 is provided with a plurality of protrusions 32 for temporarily fixing the sealing material 2, and the outer periphery of the knob portion 31 is a protrusion ring 45 provided inside the cap 4. A plurality of thin pieces 33 for temporarily fixing the knob member 3 to the cap 4 are provided, and the cap 4 having the knob member 3 to which the sealing material 2 is temporarily attached is installed at the mouth of the container. The high-frequency heat-sealed container with a knob according to claim 1, which is covered.