KR20160084435A - Container body, container, and method for producing container - Google Patents

Abstract

The lid 3 is provided in the annular first heat seal portion 23 and the lid 3 is extended from the skirt portion 26 in the flange portion 25 provided with the skirt portion 26 of the container main body 2 The cover (3) is provided on the flat end portion (27) with the second heat seal portion (29) over at least a part of the outer periphery. When released from the opening start portion 3A of the lid 3 corresponding to the flat end portion 27, delamination starts from the flat end portion 27 and the second heat seal portion 29 is released from the first heat seal portion 23 To the notch 28 and released. Even when the skirt portion 26 is provided and the notch 28 is provided for the purpose of appearance, strength, handling, or the like, delamination between layers can be obtained. The outer periphery accuracy of the first heat-sealed portion 23 becomes unnecessary, and the lid 3 can be easily installed.

Description

TECHNICAL FIELD [0001] The present invention relates to a container body,

The present invention relates to a container body, a container, and a container manufacturing method having a cut-in groove in a flange portion of the container body.

BACKGROUND ART Conventionally, for example, a top film is thermally fused to a flange portion of a container body made of a multi-layered sheet as a container such as food or the like to firmly seal the container, and at the time of opening, (For example, refer to Patent Document 1).

This container has a larger adhesion force between the flange and the top film than the interlaminar adhesion between the inner and outer layers in the multilayer sheet constituting the container body. Further, a cut-in groove is formed in the opening of the container body from the position where the top film is thermally fused in the flange portion. At the time of opening the top film, the inner layer of the container body is peeled from the outer layer to the position of the notched groove along with the top film, thereby opening the container.

As such a container, as described in Patent Document 1, the periphery of the flange portion is bent downward in consideration of external appearance, handling property, strength of the container body, and the like, Is known.

Japanese Patent Application Laid-Open No. 62-251363

However, in the case of a food container, for example, the distance between the double cut-in grooves is about several millimeters. In order to heat-seal the top film without overlapping the cut grooves therebetween, As a result, there is a problem that a manufacturing apparatus capable of heat-sealing with high precision is required, and a simpler manufacturing method is desired.

An object of the present invention is to provide a container body, a container, and a container manufacturing method in which the cover can be easily installed.

A container body according to the present invention comprises a housing recess having an opening for housing an article to be packaged, a flat portion extending from the outer periphery of the opening portion, and a skirt bent from the outer periphery of the flat portion toward the bottom of the container body, Wherein the container main body includes a flat end portion extending from the outer periphery of the skirt portion toward the outside, and a flat end portion extending from the outer periphery of the skirt portion toward the outside, wherein the flange portion has a flange portion, Wherein the flange portion has an insertion groove formed in an annular shape and located at the opening portion side from an installation region where the lid is installed and which cuts at least one layer facing the face on which the lid is provided, Wherein the mounting region includes a first mounting region annularly provided on the flange portion, It has a second installation area, which is installed over at least a portion of the outer periphery of the end portion.

The skirt portion of the container body of the present invention is formed so as to be bent toward the direction of the bottom surface of the container body from the outer periphery of the flat portion. Here, the angle of bending formation is not particularly limited as long as it is bent in the direction of the bottom surface of the container. The flat portion means that the flat portion is substantially flat with respect to the opposed face of the lid material provided on the container body of the present invention, and the flat portion is allowed to incline in a range that does not hinder the lid material. The skirt portion of the container body of the present invention is formed to be bent so that the volume is reduced when the temperature is lowered, and it is possible to suppress the flange portion from bending after filling the contents even when the container is filled.

In the present invention, the lid is provided in the annular first mounting area on the flange portion provided with the skirt portion of the container main body, and in the second mounting region extending from the skirt portion to at least a part of the outer periphery When the cover is opened from the flat end portion, delamination starts from the flat end portion, and is released from the second mounting region to the notched groove from the second mounting region to the interlayer delamination. Thus, even in the case of a container main body provided with a skirt portion for the purpose of appearance, strength, handling, and the like, even if a configuration in which one incision groove is provided in the opening side from the installation region, delamination is obtained. Therefore, it is not necessary to provide another notched groove on the outer circumferential side of the mounting area. Therefore, by extending the outer circumferential side of the mounting region to the outer circumference of the flange portion, it is possible to improve the installation strength in the mounting region, to seal with high strength, and to eliminate one incision groove, The work of precision adjustment at the time of manufacture is reduced.

Here, in the present invention, the term " bending " includes a bent state in a folded state, a folded state in a folded state, or a state in which a folded state is bent without a folded line. Further, in the present invention, the term " annular shape " includes not only a round shape but also a polygonal shape having a plurality of corner portions.

In the present invention, it is preferable that the flat end portion is formed so as to extend outward on the outer periphery of the skirt portion.

In the present invention, the flat end portion and the flange portion face the same surface on which the lid is provided, so that the lid can be installed from above in one operation, and the manufacturing efficiency can be improved.

In the present invention, when the angle formed by the flat end portion with respect to the opening face of the opening portion is less than 60 占 and more specifically, when the position of the opening face is 0 占 the angle formed by the flat end portion extending upward is +60 60 degrees formed by extending the flat end portion downward.

In the present invention, when the angle formed by the flat end portion with respect to the opening surface of the opening is +60 DEG or more, it is difficult to open the opening. When the angle is larger than -60 DEG, sealing may become difficult.

Further, in the present invention, it is preferable that the skirt portion is formed to be inclined from the periphery of the flat portion.

In the present invention, even if a first installation area where the lid is provided on the flange part and a second installation area provided on the flat end are spaced apart from each other and an area where the lid is not provided is interposed between the lid and the skirt part, It is possible to prevent the appearance from being damaged.

In the present invention, it is preferable that the second mounting region and the first mounting region are formed continuously.

According to the present invention, since the delamination starting from the flat end at the time of opening proceeds continuously from the region provided in the skirt portion to the first mounting region with the flange portion, the delamination can proceed smoothly, have. Particularly, in the structure in which the skirt portion is formed by being extended obliquely from the periphery of the flat portion, it is easy to install the skirt portion with the skirt portion, and a configuration in which a smooth opening feeling can be obtained can be easily manufactured.

A container body of the present invention comprises a concave portion, a first flat portion extending from an opening rim of the concave portion, and a flange portion having a skirt portion bent from the outer periphery of the first flat portion toward the bottom side of the concave portion, Wherein the flange portion has a flange portion extending from an outer periphery of the skirt portion to an outer side of the recess portion, 2 flat portion and an annular first mounting region on which the lid is provided in the first flange portion and which is provided at an edge of the opening and formed in an annular shape and at least the lid is provided in the flange portion And at least a part of the outer circumference of the second flat portion Up, it characterized in that the second mounting area on which the door installation is installed.

The skirt portion of the container body of the present invention is formed to be bent from the outer circumference of the first flat portion toward the bottom side of the concave portion. Here, the angle of bending is not particularly limited as long as it is bent in the direction of the bottom surface of the concave portion. The first flat portion means that the flat portion is substantially flat with respect to the opposing face of the lid provided on the container body of the present invention, and the inclination in a range that does not hinder the lid is allowed. The skirt portion of the container body of the present invention is formed to be bent so that the volume is reduced when the temperature is lowered, and it is possible to suppress the flange portion from bending after filling the contents even when the container is filled.

In the present invention, the lid is provided in the annular first mounting area on the flange portion provided with the skirt portion of the container main body, and the second flat portion extending from the skirt portion is provided with the second installation When the cover is opened from the second flat portion, the delamination starts from the second flat portion, and the delamination is released from the second mounting region to the groove over the first mounting region.

Thus, even in the case of a container body provided with a skirt portion for the purpose of appearance, strength, handling, and the like, even if a configuration is provided with one groove on the opening side of the recess from the mounting region, delamination can be obtained. Therefore, it is not necessary to provide another groove on the outer circumferential side of the mounting region. Therefore, by extending the outer peripheral side of the mounting region to the outer periphery of the flange portion, it is possible to improve the installation strength in the mounting region and to seal with high strength, and by eliminating one groove, The work of adjusting the precision of the workpiece is reduced.

A container according to the present invention comprises a container body of the present invention and a lid provided at a flange portion of the container body to close the opening, wherein the container body is attached to the container body by an adhesive force between the flange portion and the lid, And at least one interlaminar bond strength of the laminated structure is small.

According to the present invention, since the container body of the present invention in which the interlayer peeling can be obtained is used even in the structure in which the skirt portion is provided with one groove, the installation strength in the installation region can be improved, It is possible to reduce the work of adjusting the precision in manufacturing due to the formation of the grooves.

A container manufacturing method of the present invention is a container manufacturing method comprising the steps of: forming a housing recessed portion having an opening for housing a package, a flat portion extending from the outer periphery of the opening portion, and a flat portion extending from the outer periphery of the flat portion toward the bottom of the container body A method of manufacturing a container, comprising the steps of providing a lid on a flange portion of a container body having a multi-layered structure having a flange portion having a skirt portion and closing the opening portion, wherein the container body includes: Wherein the flange portion is provided with a flat end portion and a mounting region in which the lid is installed from the flange portion and which is provided in an annular shape located at the opening side and cuts at least one layer facing the surface on which the lid is provided And the lid is attached to the flange portion, Layer structure of the container main body with an adhesive strength of at least one of the multilayer structures constituting the container main body is reduced in an annular shape in the mounting region in a state in which at least one interlaminar adhesive strength of the multi- And is installed at the end portion.

In the present invention, a container main body in which a flat end portion is extended is used in a skirt portion provided in a flange portion, and a lid is provided in an annular mounting region on a flange portion, and a lid is provided on at least a part of the outer periphery of the flat end portion When it is opened from the flat end portion, the delamination starts from the flat end portion, and the delamination is released to the notched portion through the installation region. Thus, even in the case of a container main body provided with a skirt portion for the purpose of appearance, strength, handling, and the like, even if a configuration in which one incision groove is provided in the opening side from the installation region, delamination is obtained. Therefore, it is not necessary to provide another notched groove on the outer circumferential side of the mounting area. Therefore, by extending the outer circumferential side of the mounting region to the outer circumference of the flange portion, it is possible to improve the installation strength in the mounting region, to seal with high strength, and to eliminate one incision groove, The work of precision adjustment at the time of manufacture is reduced.

According to the present invention, there is provided a container body of the present invention, and a lid provided at a flange portion of the container body to close the opening, wherein the first mounting region has a position corresponding to at least the flat end portion of the outer periphery Shaped seal bar formed in a curved shape.

According to the present invention, since the position corresponding to at least the flat end portion of the outer peripheral edge is formed in a curved shape on the annular seal bar for installing the lid, the resin stagnation is prevented from being formed on the outer peripheral edge of the first mounting region, The openability of the resin due to the stagnation of the resin during opening can be prevented from being impaired, and the openability of the film can be improved.

Further, in the present invention, it is preferable that the first mounting region is formed by a curved surface around the entire outer circumference of the seal bar.

A container body of the present invention comprises a housing recess having an opening for housing a package, a flat portion extending from the outer periphery of the opening, and a skirt bent from the outer periphery of the flat portion toward the bottom of the container body, Wherein a flange portion of the flat portion of the flat portion of the flange portion has a flange portion and the flange portion is closed to close the opening portion, Wherein the flange portion is provided in an annular shape on the side of the opening portion from an annular mounting region in which the cover is provided so that at least a portion of the flange portion facing the surface on which the cover is provided Wherein the skirt portion has an infeed groove for cutting the one layer, Other of the outer periphery and the installation area of the annular part of the rats is characterized in that the peripheral edge matching.

According to the present invention, at least a part of the outer peripheral edge of the flat portion where the skirt portion is not bent is formed as a flat end, the outer peripheral edge of the annular mounting region on which the lid is provided on the flange portion, The release from the flat end portion is initiated from the flat end portion, and the release from the flat end portion is released to the notched groove through the first installation region. Therefore, even in the case of a container body provided with a skirt portion for the purpose of appearance, strength, handling, and the like, even if a configuration in which one incision groove is provided in the opening side from the mounting region, delamination is obtained. Therefore, it is not necessary to provide another notched groove on the outer circumferential side of the mounting area. Therefore, by extending the outer circumferential side of the mounting region to the outer circumference of the flange portion, it is possible to improve the installation strength in the mounting region, to seal with high strength, and to eliminate one incision groove, The work of precision adjustment at the time of manufacture is reduced.

The container body of the present invention includes a flange portion having a concave portion, a flat portion extending from the opening rim of the concave portion, and a skirt portion bent from the outer periphery of the flat portion toward the bottom side of the concave portion Wherein at least a part of the outer periphery of the flat portion is not bent so that the skirt portion is not formed, and the outer periphery of the flange portion is not bent, Wherein the flange portion is provided in an annular shape located at the opening side from an annular mounting region where the cover is provided and has a groove for cutting at least one layer facing the face on which the cover is provided, The outer circumference of the flat portion in which the skirt portion is not bent and the outer circumference of the annular installation region It characterized in that at least a portion of the outer peripheral edge matching.

According to the present invention, at least a part of the outer peripheral edge of the flat portion where the skirt portion is not bent is formed as a flat end, the outer peripheral edge of the annular mounting region on which the lid is provided on the flange portion, The release from the flat end portion is started, and the release from the flat end portion is released to the groove over the first installation region. Therefore, even in the case of a container body provided with a skirt portion for the purpose of appearance, strength, handling, and the like, even if a structure is provided with one groove on the opening side from the mounting region, delamination can be obtained. This eliminates the need to provide other grooves on the outer circumferential side of the mounting area. Therefore, by extending the outer peripheral side of the mounting region to the outer periphery of the flange portion, it is possible to improve the installation strength in the mounting region and to seal with high strength, and by eliminating one groove, The work of adjusting the precision of the workpiece is reduced.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a part of an easy-to-open container according to a first embodiment of the present invention. Fig.
2 is a plan view showing the easy-to-open container.
3 is a side view showing the easy-to-open container.
Fig. 4A is a side cross-sectional view of the position of II in Fig. 2 showing a portion of the easy-to-open container; Fig.
Fig. 4B is a side sectional view of the position of II-II in Fig. 2 showing a part of the easy-to-open container; Fig.
5 is an explanatory view for explaining a sealing operation of the easy-to-open container.
6 is a perspective view showing a part of an easy-to-open container according to a second embodiment of the container of the present invention.
FIG. 7A is a side view in side elevation of a flat end portion showing a part of the easy-to-open container; FIG.
Fig. 7B is a positional side sectional view of a skirt portion showing a part of the easy-to-open container; Fig.
FIG. 8 is a perspective view showing a part of the easy-to-open container according to another embodiment of the present invention. FIG.
9 is a side sectional view of a flat end portion of an easy-to-open container according to another embodiment of the present invention.
10 is a side cross-sectional view of the skirt portion of the easy-to-open container of still another embodiment of the present invention.
11 is a plan view showing an easy-to-open container in still another embodiment of the present invention.
FIG. 12 is a perspective view of a part of an easy-to-open container according to another embodiment of the present invention; FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the present embodiment, a circular container is exemplified, but the present invention is not limited thereto.

{First Embodiment}

[Composition of easy-to-open container]

Figs. 1 to 3 are exploded convenience containers 1, which are containers of the present invention. The easy opening containers 1 are provided with a container body 2 and a lid 3. Fig. The container body 2 is formed by molding a multilayer sheet, specifically, by heating, and is a laminate in which two layers of the release layer 21 and the undercoat layer 22 are laminated in this order (see FIG. 4) ).

Here, the release layer 21 is a layer that comes into contact with the article to be sealed in the easy-to-open container 1, and is also sealed with the sealant of the lid 3. The lid 3 and the first heat seal portion 23 as the first mounting region which is the heat sealed portion are peeled from the container body 2 together with the lid 3. [

As the release layer 21, for example, a material to be heat sealed with the lid 3, preferably a polyolefin-based resin, is suitably used. Specifically, it is preferable to use polypropylene resins such as homopolypropylene (HPP), random polypropylene (RPP) and block polypropylene, polyethylene resins such as high density polyethylene (HDPE) and low density polyethylene (LDPE), linear ethylene- -olefin copolymer and the like are used.

The underprinted layer 22 constitutes the lower layer of the release layer 21 adjacent to the release layer 21 and delaminated between the release layer 21 and the release layer 21 at the time of opening the easy opening container 1.

As a specific material constituting the undermentioned layer 22, for example, it is preferable that the material is composed of at least one selected from the group consisting of an olefin resin, a polystyrene resin and a polyester resin.

As the olefin resin, specifically, polypropylene, polyethylene and the like are used, and in particular, polypropylene is widely distributed and easily available, and is suitably used in terms of low cost and high strength.

Specific examples of the polystyrene-based resin include general-purpose transparent and rigid GP grade polystyrene, impact resistant HI grade polystyrene, and the like. Particularly, in view of the impact resistance required when using polystyrene of HI grade as a container or the like, Is used.

As the polyester resin, specifically, an amorphous polyester, a crystalline polyester, or the like is used, and in particular, an amorphous polyester is suitably used for the reason of processability.

In particular, as the underprinting layer 22, a polymer containing at least a part of a propylene unit (hereinafter referred to as a polypropylene-based resin, suitably represented by PP) and a polymer containing at least a part of an ethylene unit , Suitably expressed as PE) of PP: PE = 30 to 99 mass%: 1 to 70 mass%.

Here, if the mass ratio PP / PE is less than 0.67, there is a possibility that the resin stagnation occurs at the time of heat sealing and the defective opening is caused. Particularly, if the mass ratio PP / PE is less than 0.429, the stiffness may be insufficient. If the mass ratio PP / PE is more than 99, flexibility may be insufficient.

Specifically, the polypropylene-based resin is selected from any one of homopolypropylene, random polypropylene, block polypropylene, and a mixture thereof. In consideration of heat resistance, homopolypropylene, block polypropylene, and random polypropylene are preferred in this order. When the sealing property with other layers is taken into account, random polypropylene, block polypropylene and homopolypropylene are preferred in this order.

Specific examples of the polyethylene-based resin include high-density polyethylene, low-density polyethylene and the like, and particularly low-density polyethylene is suitably used for reasons of molding processing stability.

Further, an inorganic filler such as talc may be added to the lower layer 22.

The undercoat layer 22 is laminated immediately adjacent to the peel layer 21 but is not laminated between the peel layer 21 and the undercoat layer 22 due to heat sealing such as an adhesive layer, A relatively thin layer may be provided.

The container body 2 has a substantially circular cup shape having a predetermined depth and has a housing recess 24 which is a concave portion that opens a substantially circular opening 24A. At the periphery of the opening 24A, And a flat portion 25A which is a first flat portion is disposed so as to protrude outward. A skirt portion 26 is formed on the outer periphery of the flat portion 25A toward the direction of the bottom of the container, specifically, toward the downward slope in the vertical direction. A flat end portion 27 of a tongue-like shape, which is a second flat portion, is provided on the outer side of the outer periphery of the skirt portion 26 in parallel with the flange portion 25. The flat portion 25A and the skirt portion 26 constitute a flange portion 25 on which the lid 3 is mounted.

When the angle formed between the flat end portion 27 and the opening surface of the opening 24A is less than 60 DEG, more specifically, when the position of the opening surface is 0 DEG, the angle formed by the flat end portion extending upward is +60 Deg.] Formed by extending the flat end portion downward, and preferably in the range of +30 [deg.] To -30 [deg.].

This is because when the angle formed by the flat end portion 27 with respect to the opening surface of the opening portion 24A is +60 DEG or more, it is difficult to open the opening. When the angle is larger than -60 DEG C, sealing may become difficult. It is preferable that the angle formed with respect to the opening face is formed to be substantially 0 DEG from the viewpoint of both the shape and form of the form of forming the flat end portion 27 and the sealing property to the flat end portion 27. [

The thickness dimension of the flange portion 25 of the container main body 2 is preferably 200 占 퐉 to 2000 占 퐉, more preferably 250 占 퐉 to 1,500 占 퐉, particularly preferably 300 占 퐉 to 1000 占 퐉 do.

If the thickness of the flange portion 25 is smaller than 200 탆, the rigidity of the container may be lowered. If the flange portion 25 is thicker than 2000 탆, most of the material is required and the manufacturing cost There is a possibility of causing a problem, and therefore, the above range is set.

The notch 28 serving as a notch grooved groove is provided in the flange portion 25 in such a state that the notch 28 in the flange portion 25 is in a state of being fed with at least one release layer 21 which faces the surface on which the cover 3 is provided (See FIG. 4).

The notch 28 is formed in such a manner that when the lid 3 is opened, the peeling layer 21 is peeled off from the surface of the notch 28 at the position of the notch 28 of the peeling layer 21, And is not particularly limited as far as it is not less than the depth from the notch 28 to the peeling layer 21 on the side of the opening 24A. Particularly, it is preferable that it is provided at a depth reaching the lower layer 22, that is, a depth not less than the thickness dimension of the release layer 21.

The grooves in the present invention can be formed into various shapes such as V-shaped cross section or U-shaped cross section. In addition, the grooves are not limited to being formed by cutting, but can be formed by various methods such as pressing and cutting.

The easy opening container 1 has a flange portion 25 and a cover 3 mounted on the flange portion 25 with respect to the opening portion 24A is heat sealed to form a first heat seal portion 23 as an annular mounting region, Is formed on the outer peripheral side from the notch 28, and the interior of the easy-to-open container 1 is sealed. The lid 3 is provided with an opening start portion 3A provided on the outer periphery of the outer periphery of the container body 2 so as to extend over the outer peripheral edge of the flat end portion 27 of the container body 2 to form a second heat- 29 are formed and installed in the container main body 2.

As shown in Fig. 1, when the lid 3 is pulled up to the upper part in the opening start portion 3A of the lid 3, in order to open the easy opening container 1 in the sealed state, (1) is opened easily.

The cover 3 is composed of the outer layer 32 appearing on the outside of the easy opening container 1 and the seal layer 31 to be heat sealed and the peeling layer 21 of the container body 2 in the present embodiment Laminated body.

As the outer layer 32 constituting the lid 3, a polyethylene terephthalate (PET) film, a biaxially stretched nylon film (O-Ny) and the like can be used. The sealing layer 31 may be made of a resin composition such as linear low density polyethylene (LLDPE).

The peeling layer 21 and the sealing layer 31 are fused together by heat sealing the container body 2 and the lid 3 to form the first heat seal portion 23 and the second heat seal portion 29 The peeling layer 21 of the container body 2 which is weak against stress is peeled from the notch 28 to the underprinting layer 22 on the outer peripheral side.

[Sealing operation]

Next, the sealing operation for installing the lid 3 on the container body 2 will be described.

In manufacturing the easily opening container (1), a sealing device having an annular seal half is used. The lid 3 is superimposed on the flange portion 25 of the container main body 2 in order to fuse the flange portion 25 of the container main body 2 and the lid 3 to seal the easy- And the heat sealing is performed by pressing the annular seal half in the heated state of the sealing device from the upper surface of the lid 3.

The opening seal portion 3A provided on the outer periphery of the outer periphery of the container body 2 is provided on the outer peripheral edge of the flat end portion 27 of the container body 2 to form the second heat seal portion 29 The lid 3 mounted on the flange portion 25 is heat sealed so that the first heat seal portion 23 as an annular mounting region is formed on the outer peripheral side from the notch 28, The inside of the container becomes a sealed state.

In order to open the easy-to-open container 1 in the sealed state, the lid 3 is pulled up to the upper part in the opening start portion 3A of the lid 3 as shown in Fig. Thereby, the peeling layer 21 is peeled off from the layer between the peeling layer 21 and the underprinting layer 22 in the flat end portion 27 of the container body 2 of the multilayer structure and the peeling layer 21 is peeled to the position of the notch 28, Is peeled off. Then, only the lid 3 is peeled off after the delamination at the position of the notch 28 is reached. This facilitates peeling even if the lid 3 and the flange portion 25 of the container body 2 are firmly adhered to each other, so that the easy-to-open container 1 is easily opened.

Any one capable of forming the first heat-sealed portion 23 and the second heat-sealed portion 29 can be applied as the seal-sealed half of the seal bar. For example, the annular seal half 40 shown in Fig. 5 may be used . The annular seal member 40 shown in Fig. 5 is formed by R machining on the outer peripheral edge with respect to the upper surface of the flange portion 25 so that the outer peripheral edge of the annular seal member 40 has the tip end portion 41 of the annular seal member 40 Specifically, the boundary A (also the tip 41 of the annular seal half 40), and on the inner circumferential side, the inclined face portion having the inclined end face 42 on the outer circumferential side and a curved surface portion 43 having a curved surface in cross section with R machined on the outer peripheral side.

Further, as shown in Fig. 5, the inner periphery of the heat-sealed portion 23 is provided so as not to coincide with the position of the notch 28, so that high-precision sealing can be obtained.

5, an angle? Formed to be directed from the outer periphery toward the inner periphery with respect to the flange portion 25 in the inclined face portion 42 formed on the inner peripheral side of the annular seal half 40, Is preferably set in a range of 2 DEG to 20 DEG, preferably in a range of 3 DEG to 15 DEG, though it depends on the width D of the annular sealing member 40. [

If the angle of the inclined surface portion 42 is less than 2 degrees, the resin storage portion is easily formed on the inner peripheral side even when the seal is pressed at the time of heat sealing, and the obtained easily opened container (1) The resistance is increased inside the one heat-sealed portion 23, which may make it difficult to smoothly open the easy-to-open container 1. On the other hand, if the angle of the inclined face portion 42 exceeds 20 °, the periphery of the boundary A is not smooth and sharp, and the cover 3 may be cut off at the time of sealing or opening, There is a concern.

Here, the inclined face portion 42 and the curved face portion 43 of the annular seal portion 40 are formed so that the boundary A is located outside (near the outer periphery) with respect to the cross-sectional width direction of the annular seal portion 40 . The curved surface portion 43 is formed on the outer peripheral side of the annular seal half 40 and the inclined surface portion 40 is formed on the inner peripheral side of the annular seal half 40 The outer peripheral edge of the annular seal half 40 is in contact with the leading end portion 41 of the annular seal member 40 from the inner peripheral side of the annular seal half 40 at the time of heat sealing, 41 of the first heat-sealed portion 23) is reliably prevented from being formed in the outer peripheral side edge portion of the first heat-sealed portion 23 so that the lid 3 can be opened have.

[Operation and effect of the embodiment]

As described above, in the first embodiment, the lid 3 is provided on the flange portion 25 provided with the skirt portion 26 of the container body 2 and the annular first heat-sealed portion 23 And a lid 3 is provided over the outer periphery of the flat end portion 27 extended from the skirt portion 26. [

Thus, when released from the flat end portion 27, delamination starts from the second heat-sealed portion 29 of the flat end portion 27, and the second heat-sealed portion 29 to the first heat- And is peeled off to the notch 28 and opened.

Therefore, in the container body 2 provided with the skirt portion 26 for the purpose of appearance, strength, handling, and the like, the notch 28 is formed on the opening portion 24A side from the first heat- The interlayer delamination can be carried out even in the case of the structure provided with the openings. Therefore, when the first heat-sealed portion 23 is provided, the outer periphery accuracy of the first heat-sealed portion 23 becomes unnecessary, the lid 3 can be easily installed, .

Further, by extending the outer periphery side of the first heat-sealed portion 23 to the outer periphery of the flange portion 25, the seal area of the first heat-sealed portion 23 can be increased and the installation strength can be improved, It can be sealed.

In the first embodiment, the flat end portion 27 is formed to extend outward on the outer periphery of the skirt portion 26. [

This allows the flat end portion 27 and the flange portion 25 to face the same upper surface on which the lid 3 is provided so that the lid 3 can be installed by one operation from above, Can be improved.

Further, the skirt portion 26 is formed so as to be inclined downward and inclined from the peripheral edge of the flange portion 25.

Thus, when the lid 3 is heat-sealed, the opening start portion 3A of the lid 3 is pressed and follows the upper surface of the skirt portion 26. [ The lid 3 is spaced apart from the first heat-sealed portion 23 provided on the flange portion 25 and the second heat-sealed portion 29 provided on the flat end portion 27, A gap is not generated between the lid 3 and the skirt portion 26 as shown in Fig. 4 (A), and thus the appearance due to the gap is prevented from being damaged .

By extending the skirt portion 26 downward, the upper surface of the skirt portion 26 is directed upward. This makes it possible to heat-seal the lid 3 to the outer periphery of the skirt portion 26, to increase the sealing width of the first heat-sealed portion 23, and to further improve the sealing performance .

{Second Embodiment}

Next, an easy-to-open container according to a second embodiment of the present invention will be described with reference to the drawings.

Fig. 6 is a perspective view showing a part of the easy-to-open container of the second embodiment opened. Fig. 7 is a side sectional view showing a part of the easy-to-open container of the second embodiment, wherein (A) is the position of the flat end portion and (B) is the position of the skirt portion. The same or similar components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted or simplified.

As shown in Fig. 6, the easy-to-open container 1 according to the second embodiment is similar to that of the easy-opening container 1 of the first embodiment except that the flat portion 25A The skirt portion 26 and the tongue-like flat end portion 27 are cut off from the outer periphery of the flat portion 25A and the outer peripheral edge of the flat portion 25A is made the flat end portion 27A.

Specifically, the easy-to-open container 1 has a flange portion 25 and a lid 3 mounted on the flange portion 25 with respect to the opening portion 24A to be heat sealed to form a first heat- (23) is formed on the outer peripheral side from the notch (28), so that the inside of the easy opening container (1) is sealed. 5, the inner periphery of the first heat-sealed portion 23 is formed so as to be located on the outer circumferential side away from the notch 28 in order to obtain high-precision sealing. The lid 3 is installed in the container body 2 so that the opening start portion 3A provided on the outer periphery of the container body 2 in the form of a tongue is positioned on the flat end portion 27A of the container body 2. [

In the flat end portion 27A, the lid 3 is heat-sealed so that the outer periphery of the first heat-sealed portion 23 is positioned, as shown in Fig. 7A. 7B, the first heat-sealed portion 23 is formed annularly in the flat portion 25A at the portion where the skirt portion 26 is provided, as in the first embodiment .

As shown in Fig. 6, if the lid 3 is pulled up to the upper portion in the opening start portion 3A of the lid 3 in order to open the easily opened container 1 in the sealed state, Delamination from the outer periphery of the opening 27A, and the easy opening container 1 is easily opened.

The outer peripheral edge of the flat portion 25A where the skirt portion 26 is not formed is defined as the flat end portion 27A and the outer peripheral edge of the first heat sealed portion 23 is the flat end portion The lid 3 is provided on the container body 2 so as to coincide with the outer periphery of the container body 2 and the container body 2.

As a result, similarly to the first embodiment, when opened from the flat end portion 27A, delamination starts from the outer periphery of the flat end portion 27A, and the first heat seal portion 23 reaches the notch 28, Is opened.

Therefore, in the container body 2 provided with the skirt portion 26 for the purpose of appearance, strength, handling, and the like, the notch 28 is formed on the opening portion 24A side from the first heat- The interlayer delamination can be carried out even in the case of the structure provided with the openings. Therefore, when the first heat-sealed portion 23 is provided, the outer periphery accuracy of the first heat-sealed portion 23 becomes unnecessary, the lid 3 can be easily installed, .

Further, by extending the outer periphery side of the first heat-sealed portion 23 to the outer periphery of the flange portion 25, the seal area of the first heat-sealed portion 23 can be increased and the installation strength can be improved, It can be sealed.

[Modifications]

Best mode for carrying out the present invention are described in the above description, but the present invention is not limited thereto. While the present invention has been described with reference to particular embodiments, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, You can add variations.

Accordingly, the description of the material, layer structure, and the like that are described above is merely illustrative for the purpose of facilitating understanding of the present invention and is not intended to limit the present invention. Therefore, The description in a name other than the entirety is included in the present invention.

For example, the present invention is not limited to the configuration having the circular opening portion 24A as the easy-to-open container 1, but may be, for example, a rectangular shape as shown in Fig. 8, an elliptical shape, a polygonal shape, a gourd shape, , And the like.

8, the flat end portion 27 is not limited to the case where the flat end portion 27 is provided at all of the angular positions, and at least one of the flat end portions 27 may be a flat end portion 27 .

The outer circumferential side of the first heat-sealed portion 23 may be formed over the outer circumference of the skirt portion 26. With this configuration, as described above, the sealing width of the first heat-sealed portion 23 can be increased, and the sealing performance can be further improved.

9 and 10, the skirt portion 26 may be bent in a state of being orthogonal to the flange portion 25, or may be formed in a skirt portion (for example, 26 may be further bent as shown in Fig. 10, or may be bent in a state of gently curving from the flange portion 25 to the skirt portion 26 as shown in Fig.

In the easy-to-open container 1 of the embodiment shown in Figs. 9 and 10, the flat end portion 27 is formed so as to protrude outward.

The flat end portion 27 may be formed so as not to protrude in parallel with the flange portion 25 but to be inclined downwardly. In this case, as described above, the second heat-sealed portion 29 is formed together with the first heat-sealed portion 23 by forming the angle of less than -60 °, preferably -30 ° with respect to the horizontal plane It is preferable.

The first heat-sealed portion 23 and the second heat-sealed portion 29 may be formed continuously.

This allows the delamination starting from the second heat seal portion 29 of the flat end portion 27 to be released from the region provided in the skirt portion 26 to the first heat seal portion 23 with the flange portion 25 The continuous delamination can proceed smoothly, and a smooth opening feeling can be provided. Particularly, in the structure in which the skirt portion 26 is inclinedly extended from the periphery of the flange portion 25, the skirt portion 26 and the lid 3 can be easily installed, Can be manufactured.

The second heat-sealed portion 29 is provided over the entire circumference of the flat end portion 27. However, for example, as shown in Fig. 11, the tip end of the flat end portion 27, The second heat-sealed portion 29 may be provided only over the rim of the portion.

The first heat-sealed portion 23 may be provided at a distance from the notch 28 or at the position of the notch 28.

The lid 3 is not limited to the case of sealing the opening in the state of being provided on the flange portion 25. For example, as shown in Fig. 12, a lid provided with a window such as a hole or cut- And a part of the opening may be closed by being installed.

In addition, the container body 2 and the lid 3 are not limited to the heat seal, and various methods such as fusion bonding by ultrasonic waves, adhesion by an adhesive or a pressure sensitive adhesive can be used.

1: Easy to open container
2:
3: Cover
23: a first heat seal part as a first installation area which is an installation area
24: recessed recessed recessed portion
24A: opening
25: flange portion
25A: flat portion which is the first flat portion
26: Skirt portion
27, 27A: flat end portion which is the second flat portion
28: Grooved grooved notch
29: a second heat seal part as a second installation area which is an installation area
40: Seal bar ring seal
43:

Claims (12)

And a flange portion having a flat portion formed from the outer periphery of the opening portion and a skirt portion bent from the outer periphery of the flat portion toward the bottom of the container body And a cover is provided on the flange portion to close the opening,
Wherein the container body includes a flat end portion extending outward from an outer periphery of the skirt portion and a flange portion provided on the flange portion from an installation region where the cover is provided to the opening portion side, At least a cut-out groove for cutting one layer toward a surface on which the cover is provided,
Wherein the mounting region has a first mounting region annularly provided on the flange portion and a second mounting region provided over at least a part of the outer circumference of the flat end portion. The container body according to claim 1, wherein the flat end portion is formed to extend outwardly from the outer periphery of the skirt portion. The container body according to claim 2, wherein the flat end portion is formed to extend in a range of less than 60 degrees with respect to the opening surface of the opening portion. The container body according to any one of claims 1 to 3, wherein the skirt portion is formed to be inclined from the periphery of the flat portion. The container body according to any one of claims 1 to 4, wherein the second mounting region and the first mounting region are formed continuously. And a flange portion having a concave portion, a first flat portion extending from an opening rim of the concave portion, and a skirt portion bent toward the bottom side of the concave portion from the outer periphery of the first flat portion, Wherein a flange portion is provided at a cover to cover at least a part of the opening,
Wherein the flange portion includes a second flat portion extending outwardly from the outer periphery of the skirt portion toward the outside of the skirt portion and a second flat portion extending from the annular first mounting region of the first flange portion, The flange portion having a groove for cutting at least one layer facing the face on which the cover is provided,
Wherein at least a part of the outer periphery of the second flat portion is provided with a second mounting region where the cover is installed. And a flange portion having a flat portion formed from the outer periphery of the opening portion and a skirt portion bent from the outer periphery of the flat portion toward the bottom of the container body And a cover is provided on the flange portion to close the opening,
Wherein the container body comprises:
At least a part of the outer periphery of the flat portion of the flange portion is not bent on the skirt portion,
Wherein the flange portion is provided with an annular groove located on the side of the opening portion from an annular mounting region where the cover is provided and is provided with a notch groove for cutting at least one layer facing the face on which the cover is provided, Have,
Wherein an outer periphery of the flat portion in which the skirt portion is not bent and an outer periphery of the annular mounting region coincide with each other. And a flange portion having a concave portion, a flat portion extending from an opening rim of the concave portion, and a skirt portion bent from the outer periphery of the flat portion toward the bottom side of the concave portion, And at least a part of the opening is closed by being installed,
Wherein at least a part of the outer periphery of the flat portion of the flange portion is not bent at the skirt portion,
A flange portion which is provided in an annular shape and is located at the opening side from an annular mounting region where the cover is provided and has a groove for cutting at least one layer facing the face on which the cover is provided, ,
Wherein at least a part of the outer periphery of the flat portion in which the skirt portion is not bent and the outer periphery of the annular mounting region coincide with each other. 7. A container body comprising: a container body according to any one of claims 1 to 6;
And a lid provided at a flange portion of the container body to close the opening,
Wherein the container body is formed such that at least one interlaminar bond strength of the laminated structure constituting the container body is small due to the adhesive force between the flange portion and the lid. And a flange portion having a flat portion formed from the outer periphery of the opening portion and a skirt portion bent from the outer periphery of the flat portion toward the bottom of the container body A method of manufacturing a container in which a lid is attached to a flange portion of a container body having a multilayer structure and the opening is closed,
Wherein the container body includes a flat end portion extending outward from an outer periphery of the skirt portion and a flange portion provided on the flange portion from an installation region where the cover is provided to the opening portion side, Wherein at least one of the slits is used to cut one layer toward the surface on which the cover is provided,
Wherein the flange portion is provided with the lid in an annular shape in the mounting region in a state in which at least one of the multilayer structures constituting the container body by the adhesive force between the flange portion and the lid is reduced, Characterized in that the lid is provided on the flat end portion over at least a part of the outer periphery of the end portion. A container according to any one of claims 1 to 5,
And a lid provided on a flange portion of the container main body to close the opening portion,
Wherein the first mounting region is formed by an annular seal bar formed at a position corresponding to at least the flat end portion of the outer periphery in a curved shape. The container according to claim 8, wherein the first mounting region is formed by a curved surface around the entire outer periphery of the seal bar.

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