JP4902206B2 - Container with lid and heat sealing method for lid - Google Patents

Description

  The present invention relates to a container with a lid used as a package for instant food that is cooked by pouring hot water after pouring, such as instant fried noodles and spaghetti, and a heat sealing method for a lid material in the lidded container.

  Conventionally, it is composed of a laminated sheet in which the base material and the surface material are detachably laminated, heat-sealing a lid with a peeling tab for peeling the surface material from the base material, and pulling the peeling tab There is known a container with a lid that can peel a surface material from a base material and open, for example, a hot water cutting hole for hot water cutting. More specifically, a container having a flat flange portion projecting from the periphery of the opening portion is formed of the laminated sheet as described above, and further extends outward from the upper surface of the flange portion, and A lidded container having a lid material having a peeling start half cut formed from the base material side across a portion extending outward from the upper surface of the flange portion and heat-sealing the lid material on the upper surface of the flange portion of the container Is known (see, for example, Patent Document 1).

  In the above-mentioned container with a lid, when the peeling tab is picked and pulled, the half-cut for starting peeling is performed between the base material heat-sealed to the flange portion and the surface material laminated so as to be peelable on the base material. The surface material can be peeled off while leaving the part on the container side and leaving the substrate on the container side. And when the base material in the peeling area of the surface material is formed, for example, by forming a circular or elliptical hot water cut hole half cut, the base material part in the hot water cut hole half cut is It is removed along with the surface material to be peeled, and a hot water cutting hole can be opened.

Japanese Utility Model Publication No. 60-9171

  In the case of the above conventional container with lid, the position of the half-cut for peeling start is located outside the upper surface of the flange part. The tab bends upward at the half-cut portion for starting peeling, and tension is easily applied in the direction of turning up the surface material from the base material, so that the base material and the surface material can be peeled relatively reliably.

  However, if the lid becomes thin and the rigidity of the base material becomes weak, when the peeling tab is picked up and pulled up, the peeling tab is bent from the base closer to the flange than the half-cut for peeling start, and the base material As a result, tension is applied in the spreading direction of the laminated surface of the surface material, and the base material and the surface material do not peel from the half-cut part for peeling start, and the entire lid material tends to peel from the flange part. There is.

  Such peeling failure can be prevented by bringing the peeling start half cut as close as possible to the heat seal portion with the upper surface of the flange portion, or by positioning the peeling start half cut in the heat seal portion. In other words, if the peeling start half cut is located at the edge of the heat seal part, when the peeling tab is picked up and pulled up, the peeling tab bends upward at the peeling start half cut portion, and the surface material is removed from the base material. Tension is easily applied in the direction of turning up. In addition, if the peeling start half cut is located in the heat seal part, the base material and the flange part are peeled at the beginning, but when this peeling proceeds to the peeling start half cut position, the peeling tab It bends upward at the half-cut part for peeling start, and tension is easily applied in the direction of turning up the surface material from the base material.

  However, in order to implement the preventive measures as described above, it is necessary to change the position of the half-cut for starting the peeling of the lid material or to change the shape of the flange portion of the container. This change requires replacement of expensive molds for both the lid and the container, and there is a problem that the economic burden is large.

  The present invention has been made in view of the above-described conventional problems, and a lid material in which a base material and a surface material are detachably laminated on a container with a flange portion projecting from the periphery of an opening is formed on the container side. The lid is heat-sealed on the upper surface of the flange portion of the container, and the lid member extends outward from the upper surface of the flange portion, and the outer side of the upper surface of the flange portion of the peeling tab. In a container with a lid that has a half-cut for peeling start formed from the base material side across the part extending in the direction, it is ensured by pulling the peeling tab without shifting the position of the half-cut for peeling. It aims at making it possible to make a base material and a surface material peel.

For this purpose, according to the first aspect of the present invention, a cover member in which a base material and a surface material are detachably laminated on a container having a flange portion projecting from the periphery of the opening is covered with the base material facing the container side. And a part where the lid member extends outward from the upper surface of the flange portion of the peeling tab, and the lid member extends outward from the upper surface of the flange portion. In the container with a lid having a half-cut for peeling start formed from the substrate side across the base, the outer edge of the flange portion of the container is a curled portion curled downward, and the peeling tab is the curled portion. And a half-cut for peeling start is located within the heat-sealed portion of the peeling tab to the curled portion.

  The first aspect of the present invention is a packaging container for instant noodles, and includes a preferred embodiment in which a hot water cut hole is opened by pulling a peeling tab to peel the surface material from the substrate.

Further, according to the second aspect of the present invention, a cover member in which a base material and a surface material are detachably laminated on a container with a flange portion protruding from the periphery of the opening is covered with the base material facing the container side, A peeling tab that extends outward from the upper surface of the flange portion, and a portion that extends outward from the upper surface of the flange portion of the peeling tab. In a heat sealing method for a lid material in a lidded container having a half-cut for peeling initiation formed from the base material side across, the container having a curled portion whose outer edge of the flange portion is curled downward, and a heat seal bar The lid is pressed against the top surface of the flange, and the lid is heat sealed to the top surface of the flange, and the peeling tab is pressed against the curled portion, and the peeling tab is heat sealed to the curled portion to start peeling. half cut , There is provided a heat-sealing method of the lid, characterized in that to position the heat-sealed portion of the release tab to the curl portion.

According to the present invention, the peeling tab is heat sealed to the curl portion formed on the outer edge of the flange portion (hereinafter, the heat seal portion is referred to as “tab seal portion”). if it is within the length of the distance the tab seal portion to the position of the half cut, the peeling-initiating half-cut can be positioned in the data Bushiru unit. If the peeling-initiating half-cut in the motor Bushiru portion is positioned, although initially between the base and the flange portion is peeled, when this separation is advanced to the position of the separation initiating half-cutting, peeling tab starts peeling It bends upward at the half-cut portion for use, and tension is easily applied in the direction of turning up the surface material from the base material. Therefore, in any case, peeling failure can be prevented.

  In addition, according to the present invention, peeling can be started simply by using a container having a curled portion that is widely used as a container, and a heat seal bar that can heat-seal the lid material on the upper surface and the curled portion of the container. The above-described peeling failure countermeasure can be implemented without shifting the position of the half-cut. Therefore, it is possible to greatly reduce the cost required for countermeasures against peeling failure.

  The present invention will be further described with reference to the drawings.

FIG. 1 is a perspective view for explaining the basic principle of a container with a lid according to the present invention, FIG. 2 is an enlarged sectional view around a peeling tab before peeling, and FIG. 3 is a peeling tab at an initial stage of peeling. FIG. 4 is an enlarged cross-sectional view around the peeling tab in a state where peeling has progressed until the hot water cutting hole is opened, and FIG. 5 is an enlarged cross-sectional view around the peeling tab at the time of heat sealing the lid material. FIG. In addition, the same code | symbol shows the same member or site | part in each figure.

As shown in FIGS. 1 and 2, the illustrated container with a lid includes a container 1 and a lid member 2.

  The container 1 has a flange portion 3 projecting from the periphery of the opening. A lid 2 is placed on the opening, and the outer peripheral edge of the lid 2 is heat-sealed on the upper surface of the flange 3. Hereinafter, the heat seal portion between the outer peripheral edge portion of the lid member 2 and the upper surface of the flange portion 3 is referred to as a lid member seal portion 4.

  The lid material 2 is a laminate of a base material 5 and a surface material 6 that can be peeled off. The lid material 2 is placed on the container 1 with the base material 5 facing the container 1, and the base material 5 side covers the upper surface of the flange portion 3. It is joined via the seal part 4. As the base material 5 and the surface material 6, a single layer material or a laminated material can be used, respectively. For example, as the base material 5, a laminate in which the sealant layer / metal layer / adhesive resin layer / paper layer are laminated in this order from the container 1 side is used, and a single layer or a laminated synthetic resin film is used as the surface material 6. Can be used that can be peeled off by an adhesive resin layer.

  A stripping tab 7 for stripping the surface material 6 from the base material 5 extends at one edge of the lid member 2. Further, on the opposite side of the peeling tab 7, an opening tab 8 for peeling the entire lid member 2 from the lid seal part 4 and opening the container 1 extends.

The container 1 has a curled portion 9 in which the outer edge of the flange portion 3 is curled downward, thereby increasing the rigidity. The opening tab 8 protrudes outward substantially horizontally from the flange portion 3, but the peeling tab 7 has a base portion bent downward and joined to the curled portion 9 via the tab seal portion 10. Projecting outward. In the illustrated container with a lid, as shown in FIG. 2, the peeling start half-cut 11 is positioned adjacent to the outer end of the tab seal portion 10.

  The peeling start half-cut 11 is a straight cut cut from the substrate 5 side to the middle of the thickness of the lid member 2 (preferably a depth penetrating the substrate 5), and crosses the peeling tab 7. Is formed. This peeling start half-cut 11 is a position protruding outward from the upper surface of the flange portion 3 as shown by a one-dot chain line in FIG. 2 before the heat-sealing of the peeling tab 7 to the curled portion 9. When the peeling tab 7 is bent downward and joined to the curled portion 9 by the tab seal portion 10, the tab seal portion 10 is formed adjacent to the peeling start half cut 11. .

  As shown in FIG. 1, a separating half cut 12 is formed on the lid member 2 at a position slightly offset toward the peeling tab 7 side. The separation half-cut 12 is a cut formed from the surface material 6 side to the middle of the thickness of the lid material 2 (preferably a depth penetrating the surface material 6), and is formed across the lid material. . The surface material 6 to be peeled by pulling the peeling tab 7 is separated and removed from the surface material 6 on the opening tab 8 side at the position of the separating half cut 12.

The illustrated container with a lid is used as a package for instant noodles that are cooked by pouring after pouring, and is provided on the side of the separation tab 7 from the separating half cut 12 for forming a hot water cut hole. A half cut 13 is formed. The hot-cut hole forming half cuts 13 are circular cuts cut from the substrate 5 side to the middle of the thickness of the lid member 2 (preferably a depth penetrating the substrate 5), and are formed at a plurality of locations. Yes. When the surface material 6 is peeled off by pulling the peeling tab 7, the portion of the base material 5 surrounded by the hot water cut hole forming half cut 13 is adjoined and removed while adhering to the peeled surface material 6. A hot water cutting hole 14 (see FIG. 4) is formed in the base material 5 thus formed.

In the container with lid being shown, peel initiating half-cut 11 adjacent the outer end of the tab seal portion 10 is located, the peeling-initiating half cut 11 in tab seal portion 10 in the present invention Position.

Next, the usage method of the container with a cover mentioned above is demonstrated .

As described above, the illustrated container with a lid is used as a package for instant noodles that are cooked by pouring hot water after pouring, and usually contains a sachet containing ingredients and sauce together with the noodles. Yes.

  First, the opening tab 8 is picked and pulled, the lid member 2 is peeled off from the lid seal part 4, about 1/3 to 1/2 is opened, and a small bag such as a stored ingredient or sauce is taken out. Pour hot water into the container 1 from the opening.

After the required time, and pull picking peeling tab 7, if the peeling-initiating half-cut 11 adjacent the outer end of the tab seal portion 10 is positioned, as shown in FIG. 3, for stripping the half-cut The peeling tab 7 is bent from the portion 11, and tension is applied in the direction of turning up the surface material 6 from the base material 5. As a result, the surface material 6 is peeled from the base material 5 starting from the peeling start half-cut 11 portion. When peeling gradually expands and peeling progresses to the position of the half cut hole forming half cut 13, as shown in FIG. 4, the base material 5 portion surrounded by the hot water cut hole forming half cut 13 is a surface material. As a result, the hot water cut hole 14 is formed in the remaining base material 5.

  After the peeled surface material 6 is cut off and removed at the separation half-cut 12 portion shown in FIG. 1, if the container 1 is tilted toward the hot water cut-out hole 14 side, the noodles in the container 1 will not flow out. Hot water in the container can be discharged from the cut hole 14. After the hot water is cut, all the lid material 2 that has been opened about 1/3 to 1/2 is peeled off completely, the container 1 is completely opened, and cooking is completed by adding ingredients and sauce. Can do.

Next, a heat sealing method of the lid member 2 in the illustrated container with lid will be described with reference to FIGS.

  First, the lid member 2 is placed on the container 1 with the base material 5 side facing the container 1. At this time, as shown by a one-dot chain line in FIG. 2, the peeling tab 7 of the lid member 2 extends substantially horizontally outward from the upper surface of the flange portion 3. The peeling start half-cut 11 is formed at a position protruding outward from the upper surface of the flange portion 3.

  In FIG. 5, 15 is a heat seal bar, pressing the outer peripheral edge of the lid 2 against the upper surface of the flange 3 to press the lid pressing portion 16 for forming the lid seal 4 and the peeling tab 7. A tab pressing portion 17 that is bent downward and pressed against the curled portion 9 to form the tab seal portion 10 is provided.

  The heat sealing of the lid 2 to the container 1 is performed by lowering the heat seal bar 15 from above the lid 2 placed on the container 1, and the outer peripheral edge of the lid 2 is flanged 3 by the lid pressing part 16. This is done by pressing the upper surface of the sheet and heating it, bending the peeling tab 7 downward by the tab pressing part 17 and pressing it against the curled part 9 and heating it, thereby forming the lid seal part 4 and the tab seal part 10 at the same time. Can do.

It is a perspective view for demonstrating the basic principle of the container with a lid which concerns on this invention. It is an expanded sectional view around the tab for peeling before peeling. It is an expanded sectional view around the tab for peeling in the initial stage of peeling. It is an expanded sectional view of the periphery of the peeling tab in a state where the peeling has progressed until the hot water cutting hole is opened. It is an expanded sectional view around the peeling tab at the time of heat sealing the lid.

DESCRIPTION OF SYMBOLS 1 Container 2 Lid material 3 Flange part 4 Lid material seal part 5 Base material 6 Surface material 7 Separation tab 8 Opening tab 9 Curled part 10 Tab seal part 11 Half cut for peeling 12 Separation half cut 13 For hot water cut hole formation Half cut 14 Hot water cut hole 15 Heat seal bar 16 Cover material pressing part 17 Tab pressing part

Claims (3)

A lid with a base material and a surface material detachably laminated on a container with a flange portion projecting around the periphery of the opening is covered with the base material facing the container, and is heat-sealed on the top surface of the flange portion. In addition, the lid member is formed from the base material side across the peeling tab extending outward from the upper surface of the flange portion and the portion extending outward from the upper surface of the flange portion of the peeling tab. In the container with a lid having a half-cut for peeling start,
The outer edge of the flange part of the container is a curled part curled downward, the peeling tab is heat sealed to this curled part, and the half-cut for peeling start is the heat seal of the peeling tab to the curled part A container with a lid, which is located within the section .   The container with a lid according to claim 1, wherein the container is a packaging container for instant noodles, wherein a hot water cutting hole is opened by pulling a peeling tab to peel the surface material from the substrate. A lid with a base material and a surface material detachably laminated on a container with a flange portion projecting around the periphery of the opening is covered with the base material facing the container, and is heat-sealed on the top surface of the flange portion. In addition, the lid member is formed from the base material side across the peeling tab extending outward from the upper surface of the flange portion and the portion extending outward from the upper surface of the flange portion of the peeling tab. In the heat-sealing method of the lid material in the lidded container having the half-cut for peeling start,
The container is a curled part with the outer edge of the flange curled downward, and the cover material is pressed against the upper surface of the flange part with a heat seal bar to heat seal the cover material to the upper surface of the flange part. A heat sealing method for a lid material, characterized in that the curling part is pressed to heat-seal the peeling tab to the curling part, and the half-cut for initiating peeling is located within the heat-sealing part of the peeling tab to the curling part .

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