JP2003170972A - Method for imparting curling characteristics to lid of lidded container - Google Patents

Method for imparting curling characteristics to lid of lidded container

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Publication number
JP2003170972A
JP2003170972A JP2001369918A JP2001369918A JP2003170972A JP 2003170972 A JP2003170972 A JP 2003170972A JP 2001369918 A JP2001369918 A JP 2001369918A JP 2001369918 A JP2001369918 A JP 2001369918A JP 2003170972 A JP2003170972 A JP 2003170972A
Authority
JP
Japan
Prior art keywords
lid
heat
container
body
curl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2001369918A
Other languages
Japanese (ja)
Inventor
Masahisa Fukuda
Ikuo Sakashita
Kaoru Takeo
育夫 坂下
真久 福田
薫 竹尾
Original Assignee
Fuji Seal Inc
株式会社フジシール
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Seal Inc, 株式会社フジシール filed Critical Fuji Seal Inc
Priority to JP2001369918A priority Critical patent/JP2003170972A/en
Publication of JP2003170972A publication Critical patent/JP2003170972A/en
Withdrawn legal-status Critical Current

Links

Abstract

(57) [Summary] [PROBLEMS] To prevent peeling at a heat-sealed portion at the time of imparting curl characteristics. SOLUTION: The lid of a container with a lid in which a lid made of a laminated plastic film having a heat shrinkage ratio of an outer layer larger than that of an inner layer is releasably heat-sealed to an opening edge of a container body. A method of imparting curl characteristics to a lid of a container with a lid, wherein the curl characteristic is such that the curl characteristic is such that the curl characteristic is such that the curl characteristic is curled to the outside concave when peeled from the container body by heating the non-contact type heat source. By disposing the cover body between the cover and the cover body, the heat toward the heat sealing portion among the heat from the heat source toward the cover body is shielded by the cover body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid for a container with a lid, which imparts a predetermined curl characteristic to the lid with a container for containing an object such as snack foods such as instant food. To a method for imparting curl characteristics.

[0002]

2. Description of the Related Art Conventionally, as a container with a lid for instant foods of this type, a bottomed cylindrical plastic container main body and a container main body for closing the opening of the container main body. A sheet-like lid body which is peelably heat-sealed at the opening edge portion is known.

Snack noodles, for example, are contained in the container body, but when eating the snack noodles, it is necessary to pour hot water or the like into the container body, and in order to form a spout at that time, the lid body A part is peeled off. For example, the lid body is peeled from the container main body, and substantially half of the container is opened, and hot water is poured into the container main body through the pouring opening formed on the upper surface to cook the snack noodles. At that time, the peeled-off part of the lid body is held in a state of being rolled up. This is to ensure shape retention
This is because the lid is formed from a sheet material obtained by laminating aluminum foil on paper. By using the aluminum foil, the rigidity of the lid itself is increased, and the rigidity and shape-retaining property of the lid keeps the opening state of the pouring opening, so that hot water can be poured easily and safely.

[0004]

In recent years, however, there has been a demand for a container-less aluminum container to cope with environmental problems and microwave ovens. In addition, when the lid includes the aluminum foil, the metal detector cannot be used in the production process, so that it is not easy to find foreign matter.

Therefore, it is conceivable that the sheet material forming the lid body does not use aluminum foil, but since the sheet material is inferior in shape retention, if the hand is released from the lid body rolled up when pouring hot water, Due to the elasticity of the lid itself, the lid returns to its original flat state and the spout is closed, which is not convenient.

The applicant of the present application has already applied for a structure of the lid which solves the above problems (Japanese Patent Application No. 2001-178).
290). In this container with a lid, by constructing the lid from a plastic film to make it aluminum-less, and by giving the lid a curl characteristic of an outer concave,
When opened, the lid curls outward so that the pouring opening is maintained. More specifically, a lid is constructed from a laminated film in which the heat shrinkage of the outer layer is larger than that of the inner layer, and the difference in the heat shrinkage between the two layers is utilized by heating the lid. The curl characteristic of the outer concave is given to the lid body.

In this case, the curl characteristic can be imparted to the lid body by utilizing the heat when the lid body is heat-sealed to the container body. However, after the heat-sealing, the lid body is heated by a separate heat source. Curling properties can also be imparted. As this heat source, for example, a non-contact type heat source represented by various heaters such as an infrared heater or a far-infrared heater can be used, and as the non-contact type heat source, a hot air generator such as a hot air fan is used. Can also be used. These heat sources are disposed, for example, at positions above the lid body at a predetermined distance from each other to heat the lid body.

However, when the entire lid is heated by the heat source, the following problems occur. That is, the lid is adhered to the container body at the heat-sealed portion, but since the heat-sealed portion is reheated at the same time by heating the entire lid, the adhesive strength of the heat-sealed portion is reduced and the curl characteristic is reduced. There was a risk that the lid would peel off during application or during the subsequent distribution process.

Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to prevent peeling at a heat-sealed portion at the time of imparting curl characteristics.

[0010]

The present invention has been made to solve the above problems, and a method for imparting curl characteristics to a lid of a container with a lid according to the present invention is a heat shrinkage of an outer layer. A lid made of a laminated plastic film whose rate is higher than that of the inner layer is peelably heat-sealed to the opening edge of the container body. Heating the lid in a lidded container with a non-contact heat source. According to the method for imparting curl characteristics to a lid of a container with a lid, which imparts curl characteristics that curl to an outer concave when peeled from a container body,
By disposing the cover body between the heat source and the lid body, the cover body shields heat directed to the heat-sealed portion of the heat from the heat source to the lid body.

According to this method, the heat directed from the heat source to the heat-sealed portion is shielded by the cover body, so that the heat-sealed portion is prevented from being reheated by the heat from the heat source.

It is also possible to dispose the cover body at a position away from the lid body, but it is preferable to press the heat-sealed portion of the lid body with the cover body. By pressing the heat-sealed portion with the cover body, the cover body can be more reliably prevented from peeling off by the pressing force of the cover body. As a structure for pressing the heat-sealed portion with the cover body, for example, a structure in which the cover body is pressed against the heat-sealed portion of the lid body by a driving means such as a hydraulic cylinder, or the heat-sealed portion is pressed down by utilizing the own weight of the cover body It can also be configured.

On the other hand, the lid is often provided with a knob for opening. In this case, the knob is gripped and the lid is peeled from the container body. The grip portion is a portion that protrudes outward from the opening edge portion and is not heat-sealed to the opening edge portion. Therefore, when the entire lid body is heated by the heat source as described above, the knob portion is curled outwardly before opening, which causes a problem that the appearance is deteriorated and the commercial value is lowered. In this way, when the lidded container is one in which a part of the lid is protruding outside the heat-sealed portion, the heat-exposed portion and heat It is preferable that the cover body shields heat directed to the seal portion. In this configuration, the heat directed to the protruding portion is further shielded by the cover body, so that the protruding portion is not heated by the heat source and curled in the outer recess. Therefore, it is possible to maintain a good appearance and commercial value.

Further, in the method for imparting curl characteristics to the lid of the container with the lid according to the present invention, the lid body made of a laminated plastic film having a heat shrinkage ratio of the outer layer larger than that of the inner layer is the container body. By heating the lid in a container with a lid that is peelably heat-sealed to the opening edge of the container with a non-contact heat source, the lid has curling characteristics that curl to the outside concave when peeled from the container body. A method for imparting curl characteristics to a lid of a container with a lid to be applied, wherein a predetermined area inside a heat-sealed portion is defined as a curl area, and the curl area is heated by a heat source to impart the curl characteristic to the curl area. It is characterized by being given.

According to this method, instead of heating the entire lid body, the curl region located inside the heat seal part is heated and the curl region is given curl characteristics, so that the heat seal part is reheated. To be prevented. In this case, when the lid body is peeled from the container body, the lid body curls outward due to the curl characteristic of the curl region.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a method for imparting curl characteristics to a lid of a container with a lid according to the present invention will be described below with reference to the drawings. First, the lid which is the object of the present invention An example of the attached container will be described.

The container is a container with a lid provided with a bottomed cylindrical container body 1 that opens upward and a sheet-like lid body 2 that closes the opening of the container body 1. The container body 1 is formed by injection molding a synthetic resin or the like. For example, polypropylene, polyethylene, polystyrene, and foamed resins thereof are used. At the opening edge of the container body 1, a flange portion 3 protruding outwardly is provided.
Is formed over the entire circumference. The flange portion 3 is provided so as to project substantially horizontally.

On the other hand, the lid 2 is formed in a circular shape as a whole corresponding to the opening of the container body 1, and a part of the lid 2 bulges outward to open the opening. have. The knob 8 protrudes outward from the flange 3 when the container body 1 is closed.
Is gripped and the lid body 2 is peeled off from the container body 1 and partially opened. Then, by opening the lid body 2, a pouring port P for pouring hot water is formed on the upper surface of the container.

The lid 2 has a flange portion 3 as an adhesive surface.
Is peelably adhered to the upper surface of the sheet by heat sealing. The lid 2 is flexible and has a thickness of 80 to 150 μm.
It is formed of a plastic film of about m. Specifically, it is composed of a laminated film in which the heat shrinkage rate of the outer layer is larger than that of the inner layer.

More specifically, 120 ° C. as the outer layer,
A uniaxially or biaxially stretched film that shrinks 1 to 70%, preferably 3 to 10% in one direction in 15 minutes (hot air oven) is an easy peel sealant layer that does not substantially shrink as an inner layer (peeling after heat sealing). A laminated film is provided, each of which is provided with a sealant layer which is capable or destructible.

For example, as shown in FIG. 3, the outermost layer 120
Provide an OPP (uniaxially oriented polypropylene) film 4 having a thickness of 10 to 50 μm, which shrinks in one direction by 3 to 10% (heat shrinkage rate of 3 to 10%) at 15 ° C. for 15 minutes, and does not substantially shrink in the innermost layer. (Polyethylene resin) and P
An easy peel sealant layer 5 having a thickness of 30 to 100 μm is formed of an easy peel resin film formed by mixing P (polypropylene resin), EVA (ethylene-vinyl acetate copolymer), etc. As a layer, a synthetic paper 6 that does not substantially shrink and a PET (polyethylene terephthalate) film 7 are interposed.
The intermediate layer composed of the synthetic paper 6 and the PET film 7 can be omitted, and the intermediate layer may have a different structure.

Further, as a preferred constitution, 120 ° C., 1
Heat shrinks 5.5% in 5 minutes (heat shrinkage 5.5%) Thickness 2
In order to provide an OPP film of 0 μm as the outermost layer, an easy peel sealant layer of a thickness of 30 μm made of a film containing EVA as a main component as the innermost layer, and as a middle layer to give the lid body 2 a shape retention property. A synthetic paper made of a polyester resin having a thickness of 50 μm and a non-metal vapor deposition film made of a polyester resin having a thickness of 12 μm in order to have a gas barrier property (for example, silica vapor deposition P
There is a laminated film having a four-layer structure with an ET film interposed therebetween. If the heat shrinkage rate of the outer layer (heat shrinkage rate at 120 ° C. for 15 minutes) exceeds 10%, the curl described below becomes excessively strong, and after the hot water is poured into the container body 1, the lid body 2 is removed. Resealing becomes difficult.

In the state before being bonded to the container body 1, the lid body 2 having such a structure is not heated and has substantially no curl characteristic in a flat state. Then, after the snack noodles are contained in the container body 1 as the articles W, the sheet-type lid body 2 cut according to the container body 1 is heat-sealed to the container body 1.
At the time of heat sealing, a ring-shaped sealing member matching the shape of the opening edge is used. By pressing the lid 2 against the opening edge from above with the ring-shaped sealing member, the lid 2 is partially pressed and heated in a ring shape to heat seal the opening edge. Therefore, at the time of heat sealing, only the heat sealing portion X of the lid body 2 is partially heated, so that the region inside the heat sealing portion X is not substantially heated. Therefore, in the state where the lid body 2 is heat-sealed to the container body 1, the circular region inside the heat-sealed portion X has substantially no curl property.

Since the lid body 2 is often cut to be slightly larger than the container body 1, as shown in FIG.
In addition to the picked portion 8, a predetermined amount of the spilled out from the opening edge portion to the outside. In FIG. 4, the heat-sealed portion X is cross-hatched. The protruding portion 9 protruding outside the ring-shaped heat-sealed portion X as described above does not have curl characteristics because it is not substantially heated at the time of heat-sealing. The included protruding portion 9 is in a flat state without being curled. The heat sealing is performed at a sealing temperature of 180 ° C. to 190 ° C. and a time of 0.
It is performed under the condition of 7 seconds.

Next, a method for imparting the curl characteristic of the outer concave to the lid body 2 of the container with the lid body having the above structure will be described. First, the lidded container is placed with the lid 2 facing upward, and the cover 20 having the through hole 21 in the center is placed so as to cover the lid 2. Specifically, the cover body 20
Is a disk-shaped base 2 having a through hole 21 as shown in FIG.
2 and a lower brim portion 23 projecting downward on the outer peripheral portion of the lower surface of the base portion 22 over the entire circumference, and is formed in a ring shape with a generally L-shaped cross-section in one side. . The through hole 21 of the base portion 22 is circular and has an opening area that is substantially the same as the opening area of the opening portion of the container body 1. And
When the cover body 20 is placed on the lid body 2, as shown in FIG. 6B, the lower surface inner edge portion 22a of the base portion 22 abuts on the lid body 2 so that the heat-sealed portion X is pressed from above by the weight of the cover body 20. Press.

Further, the lower collar portion 23 is constructed so as to cover the outer peripheral surface of the upper portion of the container with a lid from the outside through a predetermined gap. The lower collar portion 23 has a vertical length capable of covering not only the flange portion 3 but also the body portion 10 of the container body 1 by a predetermined amount. Therefore, as will be described later, the cover body 20 is provided.
The knob portion 8 bent downward is also covered from the outside.

Further, when the cover body 20 is placed on the lid body 2, the through hole 21 and the opening portion of the container body 1 are in substantially the same positional relationship with each other, and the inner circumference of the base end portion of the lower collar portion 23 is made. Surface 23a
Has a diameter substantially the same as that of the flange portion 3 or a diameter slightly larger than the flange portion 3. That is, the inner peripheral surface 23a of the base end portion of the lower collar portion 23 functions as a horizontal positioning portion when the cover body 20 is put on the lidded container. Further, by covering the cover body 20 from above, the protruding portion 9 protruding outside the opening edge portion, in particular, the knob portion 8 is bent downward.

The cover body 20 can be made of, for example, metal such as stainless steel, copper or aluminum, or various synthetic resins. In addition, cooling means such as water cooling or air cooling may be provided to suppress the temperature rise of the cover body 20.

As described above, the lidded container on which the cover body 20 is placed is conveyed to a position below the non-contact type heat source by a conveying means such as a belt conveyor and temporarily stopped. Here, as the non-contact type heat source, for example, an infrared heater, a far infrared heater, or a hot air type is used, and heat is radiated downward. Since the heat from the heat source has directionality and the cover body 20 is mounted on the upper surface of the container, the heat does not reach the portion covered with the cover body 20. That is, of the heat directed from the heat source to the lid body 2, the heat directed to the portion covered with the cover body 20 is shielded by the cover body 20, and therefore the portion covered with the cover body 20 is not substantially heated. That is, the heat seal portion X of the lid body 2 and the protruding portion 9 that is an area outside the heat seal portion X are completely covered with the cover body 20, and the heat directed to those portions is shielded by the cover body 20. To be done. Therefore, the heat-sealed portion X is not reheated, its adhesive force is maintained, and peeling of the heat-sealed portion X is prevented.

In addition, since the cover body 20 presses the heat-sealed portion X from above, it is possible to more reliably prevent the adhesive strength of the heat-sealed portion X from being lowered and the lid 2 from peeling off. In addition, the cover body 2 has a structure in which the heat seal portion X is pressed by the cover body 2.
Since the configuration that uses the gravity of 0 is adopted, a separate driving unit is not required, and the process can be simplified.

On the other hand, the heat directed to the protruding portion 9 is also shielded by the cover body 20, so that the protruding portion 9 such as the picking portion 8 is prevented from being heated, and the protruding portion 9 is curled. Then, there is no fear that the appearance of the container will deteriorate, and the commercial value of the container is maintained. In particular, since the lower brim portion 23 is extended downward, even if the heat from the heat source comes not only from above but also diagonally above or from the side, the lower collar portion 23 also shields the heat. Therefore, it is possible to more reliably prevent the protruding portion 9 from curling.

On the other hand, since the through hole 21 is formed as a window portion in the cover body 20, the region inside the heat seal portion X is exposed upward from the through hole 21. Therefore, the heat directed to the area inside the heat-sealed portion X passes through the through-holes 21 without being shielded by the cover body 20, and the heat heats the entire area inside the heat-sealed portion X, and the entire area. Curl characteristics are imparted to the. That is, in the present embodiment, the entire area inside the heat seal portion X is the curl area Y (heating area).

Specifically, the lid 2 is heated by the heat from the heat source.
While the outermost layer of 3 shrinks, the other 3 layers do not shrink substantially. Therefore, the curl region Y has an outwardly curled characteristic due to the difference in the heat shrinkage rate.

Further, even if some wrinkles or slack are formed in the area inside the heat-sealed portion X, the wrinkles or slack can be removed by heating the area. The heating conditions for imparting curl are, for example, 90
Heating is performed for 1 to 10 seconds with hot air at a temperature of 200 to 200 ° C., and heating for 2 to 5 seconds is performed with an infrared or far infrared heater of 150 to 300 ° C. near the heat source.

As described above, the lidded container in which the curl region Y, which is the entire region inside the heat-sealed portion X, is provided with the curl characteristic of the outer recess is placed in the distribution process thereafter. When eating the contained object W, the picking portion 8
From the side toward the opposite side, the lid body 2 is partially peeled from the container body 1 and opened. At the time of opening, since the knob 8 is not curled, the flat knob 8 can be grasped and easily opened. Since the curl region Y has already been given a curl characteristic, the lid body 2 is peeled off when peeled from the container body 1.
Due to the curl characteristics of the curl area Y, the curl is curled outward so as to maintain the open state of the spout P. Specifically, the inner diameter (reference numeral D in FIG. 2) at the opening of the container body 1 is 88.
When the lid body 2 is substantially half opened in the case of mm to 90 mm, as shown in FIG. 2, the peeled-off lid body 2 is curled in an outward concave shape so as to be pushed up, and the opening distance L is 20 m.
m or more. The opening distance L is a separation distance in the unsealing direction between the upper inner peripheral surface of the container body 1 and the curled lid body 2 when seen in a plan view, and the opening distance L may be 30 mm or more. preferable. Further, it is preferable that the lid body 2 is opened approximately half, but it is sufficient that an opening distance L of at least 20 mm is obtained when the lid body 2 is opened by 20 mm or more.

For example, an OPP film having a thickness of 20 μm and a heat shrinkage of 5.5% at 120 ° C. for 15 minutes is provided as the outermost layer, and an easy peel sealant layer made of EVA film and having a thickness of 30 μm is provided as the innermost layer. In the case of the lid 2 made of a laminated film having a four-layer structure in which a synthetic paper made of a polyester resin having a thickness of 50 μm as an intermediate layer and a silica vapor deposition film made of a polyester resin having a thickness of 12 μm are interposed explain. The lid 2
The upper end of the container body 1 having an inner diameter of 88 mm to 90 mm at the opening under the heat sealing condition of the sealing temperature of 180 ° C. to 190 ° C. and the time of 0.7 seconds so that the main shrinking direction and the curling direction coincide with each other. After heat-sealing the entire circumference with a ring-shaped sealing member, for example, hot air of 200 ° C. is blown for 2 to 3 seconds, or hot air of 100 ° C. is 5 to 1
Spray for 0 seconds, or 2 near the heat source.
When the curl region Y is heated by the infrared or far-infrared heater of 00 to 300 ° C. for 2 to 3 seconds to provide the curl characteristic, the opening distance is 30 to 40 mm when the lid body 2 is opened approximately half. It became a degree.

As described above, since the lid body 2 has a curl characteristic when it is adhered to the container body 1, the lid body 2
Immediately after opening, the curl naturally curls in the outer concave, and the knob 8
The spout P has a sufficient opening distance L even when the hand is removed from
Is reliably maintained in the open state. Therefore, hot water can be easily poured into the container body 1 from the pouring port P in the open state to cook the contained object W. Since the lid 2 has a predetermined curl characteristic by utilizing the difference in heat shrinkage between the inner layer (easy peel sealant layer 5) and the outer layer (OPP film 4), curling is performed. It is easy to manage and adjust the characteristics.

In the above description, the container is temporarily stopped under the heat source and the lid 2 is heated for a predetermined time, but intermittent feeding is performed. However, when the time for passing under the heat source can be secured to some extent, the container is It is also possible to carry out continuous feeding in which the lid body 2 is heated while passing under the heat source while being transported.

Further, the structure of the cover body 20 can be changed in design as appropriate. For example, the lower collar portion 23 as described above may not be provided, and it is shown by a chain double-dashed line in FIGS. 5 and 6. Thus, the through hole 21 of the base 22 can be made smaller than the opening of the container body 1. Further, the shape of the through hole 21 as the window portion can be not only circular but also rectangular as shown in FIG. 6, and the shape is not limited. still,
In FIG. 6, a vertically long through hole 21 is provided as a window in the opening direction of the lid body 2 (direction of arrow A). If you do this,
Since the curl region Y is vertically long along the unsealing direction, it becomes easy to obtain desired curl characteristics. In this way, a part of the area inside the heat-sealed portion X is curled area Y.
May be

With respect to the shape of the lid body 2, various shapes can be adopted, such as a structure in which only the picking portion 8 sticks out to the outside of the heat-sealed portion X, a structure in which the protruding portion 9 does not exist at all. Of course, the shape of the container body 1 can be appropriately changed to a polygonal shape or the like, and the cover body 20 suitable for it can be used. The layer structure of the lid body 2 is not limited to four layers, and may be two layers, three layers, or five layers or more.

[0041]

As described above, since the cover body is arranged between the heat source and the lid body so that the heat influence from the heat source is not exerted on the heat seal portion, the adhesive strength of the heat seal portion is reduced, As a result, peeling of the lid can be prevented.

Further, since a predetermined region inside the heat-sealed portion is used as a curl region and the curl region is provided with curl characteristics, it is possible to prevent the adhesive strength of the heat-sealed region from being lowered, and thus to prevent the lid from peeling off.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view showing a state where a lid of the container is partially opened.

FIG. 3 is a partially enlarged sectional view of a lid body used in the container.

FIG. 4 is a plan view of the container, in which a heat-sealed portion is shown by cross hatching.

FIG. 5 is a plan view showing a state where a cover body is placed on the container.

FIG. 6A is a sectional view showing an embodiment of a cover body;
(B) is a partial cross-sectional view showing a state where the cover body is placed on the container.

[Explanation of symbols]

1 ... Container body 1 (container), 2 ... Lid, 3 ... Flange part,
4 ... OPP film (outer layer), 5 ... Easy peel sealant layer (inner layer), 8 ... Pick part, 9 ... Overhang part, 10 ... Body part, 20 ... Cover body, P ... Spout, X …
Heat seal part, Y ... Curl area

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ikuo Sakashita             5-3-18 Imazukita, Tsurumi-ku, Osaka             Company Fuji Seal F term (reference) 3E067 AB01 AB99 BA02A BB01A                       BB14A BB15A BB16A BB17A                       BB22A BB25A BB26A BC07A                       CA01 CA04 CA24 CA30 EA04                       EA06 EA11 EA15 EA29 EA34                       EA35 EA37 EB10 EB11 EB22                       EE48 FC01 GD07                 3E084 AA06 AA12 AB10 BA01 BA09                       CA01 CB04 CC03 FA09 FD13                       GB08 HC08 HD01 KA16

Claims (4)

[Claims]
1. A lid (2) made of a laminated plastic film having a heat shrinkage rate of the outer layer (4) larger than that of the inner layer (5) is peelable to the opening edge of the container body (1). By heating the lid body (2) of the container with a lid body that is heat-sealed to a non-contact type heat source, the lid body (2) has a curl characteristic that curls in an outward recess when peeled from the container body (1). ) Is a method for imparting curl characteristics to a lid of a container with a lid, wherein the cover (20) is arranged between the heat source and the lid (2) to remove the lid from the heat source (20). A method for imparting curl characteristics to a lid body of a container with a lid body, characterized in that, of the heat going to the heat source, the heat going to the heat seal portion (X) is shielded by a cover body (20).
2. The method for imparting curl characteristics to a lid of a container with a lid according to claim 1, wherein the cover body (20) holds down the heat-sealed portion (X) of the lid (2).
3. A container with a lid, wherein a part of the lid (2) protrudes outside the heat-sealed portion (X),
The cover body according to claim 1 or 2, wherein the cover body (20) shields the heat directed to the heat-sealed portion (X) and the heat-sealed portion (X) protruding outside the heat-sealed portion (X). A method for imparting curl characteristics to a lid of a container.
4. A lid body (2) made of a laminated plastic film having a heat shrinkage rate of the outer layer (4) larger than that of the inner layer (5) is peelable to the opening edge of the container body (1). By heating the lid body (2) of the container with a lid body that is heat-sealed to a non-contact type heat source, the lid body (2) has a curl characteristic that curls in an outward recess when peeled from the container body (1). ) Is applied to the lid of the container with the lid, the predetermined area inside the heat-sealed portion (X) is defined as the curl area (Y), and the curl area (Y) is used as a heat source. A method for imparting curl characteristics to a lid of a container with a lid, characterized by imparting curl characteristics to the curl region (Y) by heating.
JP2001369918A 2001-12-04 2001-12-04 Method for imparting curling characteristics to lid of lidded container Withdrawn JP2003170972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001369918A JP2003170972A (en) 2001-12-04 2001-12-04 Method for imparting curling characteristics to lid of lidded container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001369918A JP2003170972A (en) 2001-12-04 2001-12-04 Method for imparting curling characteristics to lid of lidded container

Publications (1)

Publication Number Publication Date
JP2003170972A true JP2003170972A (en) 2003-06-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001369918A Withdrawn JP2003170972A (en) 2001-12-04 2001-12-04 Method for imparting curling characteristics to lid of lidded container

Country Status (1)

Country Link
JP (1) JP2003170972A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005009868A1 (en) * 2003-07-25 2005-02-03 Kagawa, Atsuko Cover body for sealing container with excellent unsealing retainability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005009868A1 (en) * 2003-07-25 2005-02-03 Kagawa, Atsuko Cover body for sealing container with excellent unsealing retainability

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