JP6042232B2 - Packaging container - Google Patents

Description

  The present invention relates to a packaging container for packaging stored items such as food, and more particularly to a packaging container in which a lid material can be resealed to a bottom material even after being opened once.

  In general, a packaging container for packaging a stored item such as a food is composed of a bottom material for storing the stored item in a recess, and a lid member for sealing the same. In consideration of the case where the stored item is food, etc., in consideration of the case where the food cannot be used at once, a packaging container has been proposed in which the lid can be resealed against the bottom material in order to avoid deterioration due to oxidation of the stored item. . Further, not only foods but also cosmetics, medicines, and other stored items that should avoid moisture absorption and drying have been proposed in the same manner.

[An example of a conventional resealable packaging container]
An example of a conventional resealable packaging container will be described below with reference to FIGS. FIG. 9 is a perspective view showing a conventional packaging container. FIG. 10 is a perspective view showing a state in which the lid member is partially opened in FIG. FIG. 11 is a conceptual cross-sectional view taken along the line CC of FIG. FIG. 12 is a conceptual cross-sectional view of the state in FIG. FIG. 13 is a conceptual cross-sectional view of the state in FIG. 11 where the lid member is resealed. FIG. 14 is a schematic view showing an example of a method for manufacturing the packaging container of FIG. 15 is a conceptual cross-sectional view taken along the line CC of FIG. 9 showing a heat sealing method.

[Construction of conventional resealable packaging containers]
As shown in FIG. 9, a conventional resealable packaging container 100 is mainly composed of a lid member 2 and a bottom member 3. The bottom material 3 is formed so as to be provided with a concave storage portion 5 so that a storage item 6 such as food can be stored therein, and a corresponding portion between the bottom material 3 portion around the storage portion 5 and the lid material 2. Are adhered and sealed.

  As shown in FIG. 10, the lid member 2 and the bottom member 3 have an opening 12 that is not bonded to each other on the outside of the bonding portion between the two, and by pinching the opening 12, the lid member 2 and the bottom member 3. And the packaging container 100 can be opened.

  In this case, since the adhesive material 12 is used for the portion of the inner surface of the lid material 2 that is bonded to the bottom material 3, the lid material 2 is bonded again to the bottom material 3 using its adhesiveness. And can be resealed.

  A microscopic cross-sectional structure of the resealable packaging container 100 will be described with reference to FIGS. In FIG. 11 to FIG. 13, the stored items inside the packaging container 100 are omitted.

  As shown in FIG. 11, in the conventional packaging container 100, the lid material 2 is formed by laminating a lid material side surface resin layer 2 a, an adhesive resin layer 2 b, and a lid material side seal resin layer 2 c in order.

  Note that the thickness of the lid member 2 is, for example, about 85 μm. Moreover, the lid material side surface resin layer 2a is configured by laminating PET, EVOH, and Ny by laminating, for example, and is not limited to these configurations. Moreover, the adhesive resin layer 2b is mainly composed of, for example, ethylene-based thermoplastic elastomer, and is not limited thereto. Furthermore, about the lid | cover material side sealing resin layer 2c, it is comprised by PE, for example, It is not limited to this.

  Further, the bottom material 3 is formed by laminating a bottom material side surface resin layer 3a and a bottom material side sealing resin layer 3b. The thickness of the bottom material 3 is, for example, about 265 μm. Moreover, the bottom material side surface resin layer 3a is configured by laminating PET, EVOH, and Ny by a laminating process, for example, and is not limited to these configurations. Moreover, about the bottom material side sealing resin layer 3b, it is comprised by PE, for example, It is not limited to this.

  The lid material side sealing resin layer 2c of the lid material 2 is heat-sealed with the bottom material side sealing resin layer 3b of the bottom material 3 which is a sealed body. That is, the lid member 2 and the bottom member 3 are bonded (fused) by the heat seal portion 11 formed by heat sealing, and become the first fusion portion 11.

[Operation of conventional resealable packaging containers]
As shown in FIG. 12, since the end portion of the packaging container 100 where the lid member 2 and the bottom member 3 are not fused is not fused, the first non-fused portion 12 is opened. When the opening 12 is pinched and pulled, in the heat seal portion 11 adjacent to the opening 12, the lid material side sealing resin layer 2 c on the opening 12 side is first broken from the lid 2, and the lid Peeling is started between the adhesive resin layer 2b and the lid material side sealing resin layer 2c in FIG.

  When the peeling between the adhesive resin layer 2b and the lid material side seal resin layer 2c reaches the end of the heat seal portion 11 on the side opposite to the opening 12 side, the lid material side seal resin layer 2c of the lid material 2 is broken. . The broken lid material side sealing resin layer 2c moves to the bottom material 3 side which is the sheet body, and the exposed portion 2b1 of the adhesive resin layer 2b is formed, and accordingly, the lid material side sealing resin layer 2c is peeled off. A first peeling portion 2c1 that is a portion is formed.

  This is because the heat-sealed lid material side sealing resin layer 2c and the bottom material side sealing resin layer 2b are heat-sealed at the heat seal portion 11, and the adhesive resin layer 2b and the lid material side sealing resin layer 2b are sealed. Utilizing the fact that the delamination between the adhesive resin layer 2b and the lid material side sealing resin layer 2c occurs when the laminate strength with 2c is weaker than the bonding strength by fusion in the heat seal part 11. is there.

  In the case of resealing, as shown in FIG. 13, the peeled cover material 2 is covered on the bottom material 3, and the cover material-side surface resin layer 2 a is pressure-bonded by hand or fingers, and the pressure-sensitive adhesive resin of the cover material 2. By overlapping the exposed portion 2b1 of the layer 4 and the first peeling portion 2c1 of the lid-side sealing resin layer 2c that has moved to the bottom material 2, the lid material 2 and the bottom material 3 can be resealed.

  It should be noted that the adhesive resin layer is not a lid material but a structure arranged on the bottom material side, that is, in the case of the conventional packaging container, the laminated structure of the lid material and the laminated structure of the bottom material are used in reverse. Similarly, it goes without saying that resealing can be realized by utilizing the fact that delamination occurs between the adhesive resin layer and the bottom material side sealing resin layer.

[Conventional method for producing resealable packaging containers]
Moreover, an example of the manufacturing method of these packaging containers 100 is demonstrated using FIG. First, corresponding to the lid material 2 and the bottom material 3, the film constituting them requires two upper and lower rolls, and the above-described materials and the like are laminated on the film on the bottom material 3 side (lower film 21). A laminated film with good moldability is preferred. Since the film (upper film 22) on the side of the lid 2 is not molded, any film may be used as long as it has a good barrier property by laminating and laminating the materials described above. A pattern, characters are printed, or a printing film on which they are printed is attached.

  Next, the lower film 21 is intermittently moved forward at a predetermined pitch (product dimensions), and packaging is performed at each part while the intermittent operation is stopped. In the molding part 23, a recess having a predetermined shape is formed to constitute the storage part 5. Thereafter, the storage unit 5 is filled with stored items such as food 6 manually or automatically (filling region 24).

  Thereafter, the upper film 22 that becomes the lid member 2 immediately before entering the heat seal portion 25 covers the bottom material 3 on which the storage portion 5 is formed by the lower film 21, and enters the heat seal portion 25 in an integrated state. Head to. In the heat seal portion 25, the lid member 2 and the bottom material 3 are sealed so that the inside of the storage portion 5 is sealed around the storage portion 5 after being sealed by the upper and lower boxes and the inside of the storage portion 5 is vacuum degassed or replaced with gas. And are heat-sealed.

  After the heat sealing is performed, the lid material 2 and the bottom material 3 which are sealed by the lateral cutter unit 26 are cut in the lateral direction from the adjacent lid material 2 and the bottom material 3. Further, the sealed lid member 2 and the bottom member 3 are cut in the longitudinal direction by the vertical cutter unit 27 with the adjacent lid member 2 and the bottom member 3, and each food 6 is stored in the packaging container 100. Is completed.

  In this case, the heat sealing work in the heat sealing part 25 will be described with reference to FIG. In FIG. 15, items stored inside the packaging container 100 are omitted. In heat sealing, the lid member 2 and the bottom member 3 are integrated with each other so that the respective lid member side sealing resin layer 2c and the bottom member side sealing resin layer 3b come into contact with each other. 3 heads to the heat seal part 25.

  Next, as shown in FIG. 15, the seal mold 25 b supports the portion of the bottom material 3 that comes into contact with the lid material 2 around the storage portion 5. The seal mold 25b is configured by covering the surface of the base portion 25b2 with a seal rubber 25b1.

  On the other hand, on the lid member 2 side, a hot plate 25a serving as a seal plate is arranged, and the hot plate 25a is pressed against the seal mold 25, that is, pressed against the lid member 2 and the bottom member 3. By doing so, the lid material side sealing resin layer 2c and the bottom material side sealing resin layer 3b are fused.

  In this case, the heat plate 25a serving as a seal plate is provided with a protrusion 25a1 on the surface of the lid member 2 side, and only the position where the protrusion 25a1 is disposed contacts the lid member 2. Only the portions corresponding to the protrusions 25a1 in the lid material side sealing resin layer 2c and the bottom material side sealing resin layer 3b are fused.

  Further, the temperature of the hot plate is, for example, 140 ° C., only the lid material side sealing resin layer 2c and the bottom material side sealing resin layer 3b are fused, and the lid material side surface resin layer 2a and the adhesive resin layer 2b. In addition, other materials such as the bottom material side surface resin layer 3a are set to a temperature at which they are not fused.

  The conventional resealable packaging container 100 is completed through the above manufacturing steps.

  JP 2009-241477 A

  However, in the conventional packaging container 100, even if it can be resealed, it has been impossible to confirm that it has not been opened at the store because it can be resealed. That is, since it cannot be determined that it is not opened and mischievous or the like, it is necessary to take measures.

  Accordingly, the present invention relates to a packaging container for packaging stored items such as food, and the like, for packaging that can be re-sealed to the bottom material even after being opened once, and that can be clearly determined once opened. The purpose is to provide a container.

In order to achieve the above object, the packaging container of the present invention comprises a lid member, a bottom member, and a storage part formed between the lid member and the bottom member. A bottom material side surface resin layer and a bottom material side sealing resin layer, and the lid material side seal. The resin layer and the bottom material side sealing resin layer are fused around the storage portion by heat sealing to form a first fusion portion, and when opened, the first fusion portion is formed with respect to the storage portion. Using the first non-fused portion that is not heat-sealed with the lid-material-side sealing resin layer and the bottom-material-side sealing resin layer formed outside the fused portion as an opening, the adhesive resin layer and the The adhesive resin layer is exposed by delamination between the lid material side sealing resin layer and the adhesive resin layer A packaging container that allows the lid material and the bottom material to be resealed by adhering the lid-side sealing resin layer fused to the bottom material, the opening and the first A second non-fused portion in which the lid-material-side sealing resin layer and the bottom-material-side seal resin layer are not fused between the fused portion and a fused second fused portion; By providing regularly or irregularly, the adhesive force between the lid material and the bottom material in the second non-fused portion and the second fused portion is lower than that in the first fused portion. It is characterized by having a configuration .

The packaging container according to the present invention includes a lid member, a bottom member, and a storage portion formed between the lid member and the bottom member. The lid member includes a lid member-side surface resin layer and a lid. The bottom material is formed by laminating a bottom material side surface resin layer, an adhesive resin layer, and a bottom material side seal resin layer in order, and the lid material side seal resin layer The bottom-material-side sealing resin layer is fused around the storage portion by heat sealing to form a first fusion portion, and when opened, the first fusion portion is attached to the storage portion. The adhesive resin layer and the bottom material side with the first non-fused portion that is not heat-sealed between the lid material side sealing resin layer and the bottom material side sealing resin layer formed outside as an opening The adhesive resin layer is exposed by delamination between the sealing resin layer and the lid material with respect to the adhesive resin layer A packaging container that enables the lid material and the bottom material to be resealed by adhering the fused bottom material side sealing resin layer, wherein the opening and the first fused portion Between the second non-fused portion where the lid-material-side sealing resin layer and the bottom-material-side seal resin layer are not fused, and the fused second fused portion are regularly or non-fixed. provided regularly, it has a configuration in which the Ru reduces the adhesive force between the base material and the lid member in the second non-fused portion and the second fused portion than the first fused portion It is characterized by that.

  Further, the second non-fused portion and the second fused portion of the present invention are characterized by being regularly or irregularly continuous.

  Moreover, the said cover material and / or the said bottom material of this invention are transparent, It is characterized by the above-mentioned.

  Further, the second non-fused portion of the present invention is a linear body in which a plurality are regularly arranged in parallel.

  Further, the second non-fused portion of the present invention is characterized in that the periphery is surrounded by the second fused portion.

  In addition, the lid material of the present invention is preliminarily made of a film having a material characteristic that warps on the opposite side to the bottom material.

  According to the present invention, the lid material can be resealed to the bottom material even after being opened once, and the second non-fused portion is provided between the opening and the first fused portion. Since it is difficult to partially reseal the area around the non-fused part, it is very easy to reseal that part because it has not been resealed or even if resealed. Therefore, it can be clearly determined that the package has been opened once, and it can be confirmed that there is no mischief or the like at the store, and the product can be provided and purchased with peace of mind.

  In addition, according to the present invention, it can be realized by adding a part to be heat-sealed while keeping the film characteristics of the lid or bottom material, without changing the material constituting the lid or bottom material. And can be achieved very easily.

  In addition, according to the present invention, when the lid member and / or the bottom member is made of a transparent material, the second non-fused portion (the line constituting the opening) between the opening and the first fused portion is provided. Since it will be observed twice as much by peeling off both the lid and the bottom material side, the entire part will become cloudy, so it is easy to confirm the resealed point from this point. Is possible.

  Further, according to the present invention, since the second non-fused portion is surrounded by the second fused portion, the second non-fused portion is naturally separated from the second non-fused portion when unopened. The bottom material is prevented from peeling off.

  Furthermore, according to the present invention, the adhesive force is further reduced between the lid material and the bottom material by constituting the film with a material characteristic such that the lid material warps on the opposite side to the bottom material in advance. Thus, the lid material warps around the second non-fused portion, so that it is possible to easily confirm unopened as a configuration that is easily separated from the bottom material.

It is a perspective view which shows the container for packaging which concerns on embodiment of this invention. FIG. 2 is a perspective view showing a state in which the lid member is partially opened in FIG. 1. FIG. 3 is a perspective view of a state in which the lid member is resealed in FIG. 2. It is an AA line part cross-section conceptual diagram of FIG. FIG. 5 is a conceptual cross-sectional view of a state in which a part of the lid member is opened in FIG. 4. FIG. 6 is a conceptual cross-sectional view of the state in which the lid member is resealed in FIG. 5. It is the AA line part cross-section conceptual diagram of FIG. 1 which shows the method of heat sealing. It is the BB line part enlarged front view of FIG. 1 which shows the modification of this invention to (a) thru | or (c). It is a perspective view which shows the conventional packaging container. FIG. 10 is a perspective view showing a state in which the lid member is partially opened in FIG. 9. FIG. 10 is a conceptual cross-sectional view taken along the line CC of FIG. 9. FIG. 13 is a conceptual cross-sectional view of a state in which a part of the lid member is opened in FIG. 12. It is a cross-sectional conceptual diagram of the state which resealed the cover material in FIG. It is the schematic which shows an example of the manufacturing method of the packaging container of FIG. FIG. 10 is a conceptual cross-sectional view taken along the line CC of FIG. 9 showing a heat sealing method.

Embodiment of the present invention
Hereinafter, embodiments of a packaging container according to the present invention will be described with reference to FIGS. 1 to 7. FIG. 1 is a perspective view showing a packaging container according to an embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the lid member is partially opened in FIG. FIG. 3 is a perspective view showing a state where the lid member is resealed in FIG. 4 is a conceptual cross-sectional view taken along line AA of FIG. FIG. 5 is a conceptual cross-sectional view of the state in FIG. 6 is a conceptual cross-sectional view of the state in FIG. 5 where the lid member is resealed. FIG. 7 is a cross-sectional conceptual diagram taken along line AA of FIG. 1 showing a heat sealing method. In the description of the background art, items that are the same as those already described are omitted, and the same reference numerals are used. In FIG. 1 to FIG. 7, items stored inside the packaging container 1 are omitted.

[Configuration of Embodiment of the Present Invention]
As shown in FIG. 1, the packaging container 1 according to the present embodiment is largely composed of a lid material 2 and a bottom material 3 in the same manner as a conventional resealable packaging container 100. The bottom material 3 is formed so as to be provided with a concave storage portion 5 so as to be able to store a storage item such as food, and a corresponding portion between the bottom material 3 portion around the storage portion 5 and the lid material 2 is formed. It is adhered and sealed.

  As shown in FIG. 2, the lid member 2 and the bottom member 3 have an opening 12 that is not bonded to each other outside the bonded portion, and the lid member 2 and the bottom member 3 are pinched by pinching the opening 12. And the packaging container 1 can be opened.

  Moreover, as shown in FIG. 2, since the adhesive material 2b1 is used for the part bonded to the bottom material 3 on the inner surface of the lid member 2, the adhesiveness is used to show the portion shown in FIG. Thus, it is the same as that of the conventional packaging container 100 that the lid member 2 can be adhered again to the bottom member 3 and resealed.

  Note that the end portion of the opening 12 on the side of the storage portion 5 has a central portion ahead of the storage portion 5 side as compared to the line in which the conventional packaging container 100 swells in an arc shape with respect to the outside. It has a substantially triangular shape that is constricted. This facilitates the insertion of the finger pinching the opening 12 into the opening 12.

  As shown in FIGS. 1 to 6, the packaging container 1 of the present invention is characterized in that a second non-fused portion 13 is further provided for these components. That is, the second non-fused portion in which the lid member 2 and the bottom member 3 are not fused between the opening 12 and the first fusion part 11 (bonding portion between the lid member 2 and the bottom member 3). The second non-fused portion 13 and the second fused portion at the time of resealing are provided by regularly or irregularly providing the fused portion 13 and the fused second fused portion 14 surrounding the periphery thereof. The re-sealing confirmation is performed by reducing the adhesive force between the lid member 2 and the bottom member 3 in the portion 14.

  As shown in FIG. 1, the second non-fused portion 13 is formed between the opening 12 and the first fused portion 11 (bonded portion between the lid material 2 and the bottom material 3). It is formed so as to be surrounded by the landing portion 14, and in this embodiment, it is arranged in a complementary relationship with the opening 12, so that it is divided into two groups. Each of them is arranged in a linear manner (linear non-fused portion 13) so as to continue in parallel a plurality of times, and is linear as a whole.

  For example, the width of the linear non-fused portion 13 is 0.5 mm, and the width of the second fused portion 14 interposed between the adjacent linear non-fused portions 13 is 0.5 mm. If present, the adhesive force per unit area of the linear non-fused portion 13 as the non-fused portion and the second fused portion 14 is halved.

  In the case of re-sealing, as shown in FIG. 3, the lid 2 and the bottom material are opened around the second non-fused portion 13 before opening because of the presence of the second non-fused portion 13. 3 is bonded to the second non-fused portion 13 due to a decrease in the adhesive strength, so that it is difficult to re-seal partly. Fig. 3) Or even if it is resealed, it is very easy to reseal that part, so it can be clearly determined that it has been opened once, and there is no mischief at the store. The product can be confirmed and can be provided and purchased with peace of mind.

  In addition, as shown in FIG. 3, when the lid member 2 and / or the bottom member 3 is made of a transparent material, the second non-fused portion 13 (line constituting the lid member 2 and the bottom member 3). By peeling off both sides, the double number is observed, so that the entire part becomes cloudy in appearance. From this point, the resealed point can be easily confirmed.

  A microscopic cross-sectional structure of the packaging container 1 of the present invention will be described with reference to FIGS. As shown in FIG. 4, in the packaging container 1, as in the conventional packaging container 100, the lid material 2 is composed of the lid material-side surface resin layer 2 a, the adhesive resin layer 2 b, and the lid material-side seal resin layer 2 c. The materials, the laminated structure, and the like are also the same as those of the conventional packaging container 100.

  As for the bottom material 3, similarly to the conventional packaging container 100, the bottom material-side surface resin layer 3 a and the bottom material-side sealing resin layer 3 b are laminated, and the material, the laminated structure, etc. are the same as those of the conventional packaging container 100. The same as the packaging container 100.

  Further, the lid material side sealing resin layer 2c of the lid material 2 is heat-sealed with the bottom material side sealing resin layer 3b of the bottom material 3 which is a sealed body. That is, the lid member 2 and the bottom member 3 are bonded (fused) at the heat seal portion 11 formed by heat sealing, and become the first fusion portion 11, and this point is also the conventional packaging container 100. It is the same.

  In the embodiment of the present invention, the second fusion part 14 is provided in addition to the first fusion part 11. That is, between the opening 12 and the first fusion part 11, the second non-fusion part 13 in which the lid member 2 and the bottom material 3 are not fused, and the fused second part surrounding the periphery thereof. Since the two fused parts 14 are regularly continuous, the second fused part 14 and the second non-fused part 13 are repeated at equal intervals as shown in FIG. It has become.

[Operation of the embodiment of the present invention]
As shown in FIG. 5, since the end portion of the packaging container 1 where the lid member 2 and the bottom member 3 are not fused is not fused, an opening is formed as the first non-fused portion 12. When the opening 12 is pinched and pulled, in the second fusion part 14 adjacent to the opening 12, the lid material side sealing resin layer 2 c on the opening 12 side is first broken from the lid 2, Peeling is started between the adhesive resin layer 2b and the lid material side sealing resin layer 2c in the lid material 2.

  When the peeling between the adhesive resin layer 2b and the lid material side sealing resin layer 2c reaches the end of the second fused portion 14 on the side opposite to the opening 12 side in the second fused portion 14, the lid material 2 lid material side sealing resin layer 2c is broken. The broken lid material side sealing resin layer 2c moves to the bottom material 3 side which is the sheet body, and the exposed portion 2b1 of the adhesive resin layer 2b is formed, and accordingly, the lid material side sealing resin layer 2c is peeled off. A second peeling portion 2c2 that is a portion is formed.

  This also applies to the second fusion part 14 arranged next on the storage part 5 side, and also in the second fusion part arranged next on the storage part 5 side. The lid material side sealing resin layer 2c thus moved moves to the bottom material 3 side which is the sheet body, and the exposed portion 2b1 of the adhesive resin layer 2b is formed, and accordingly, the peeled portion of the lid material side sealing resin layer 2c A second peeling portion 2c2 is formed and this is repeated.

  Finally, in the first fusion part 11, the lid material side sealing resin layer 2 c on the opening 12 side is first broken from the lid material 2, and the adhesive resin layer 2 b and the lid material side sealing resin layer in the lid material 2. When the peeling between the adhesive resin layer 2b and the lid material side sealing resin layer 2c reaches the end of the first fusion part 11 on the opposite side to the opening 12 side, 2 lid material side sealing resin layer 2c is broken. The broken lid material side sealing resin layer 2c moves to the bottom material 3 side which is the sheet body, and the exposed portion 2b1 of the adhesive resin layer 2b is formed, and accordingly, the lid material side sealing resin layer 2c is peeled off. A first peeling portion 2c1 which is a portion is formed, and the state shown in FIG. 5 is obtained.

  As described above, the heat-sealed lid material side sealing resin layer 2c and the bottom material side sealing resin layer 2b are heat-sealed at the heat seal portion 11, and the adhesive resin layer 2b and the lid material. The delamination between the adhesive resin layer 2b and the lid material side sealing resin layer 2c occurs because the laminate strength with the side sealing resin layer 2c is weaker than the bonding strength by fusion in the heat seal portion 11. It is used.

  In the case of resealing, as shown in FIG. 6, the peeled cover material 2 is covered on the bottom material 3, and the cover material-side surface resin layer 2 a is pressure-bonded by hand or fingers, and the pressure-sensitive adhesive resin of the cover material 2. By overlapping the exposed portion 2b1 of the layer 4 with the first peeling portion 2c1 and the second peeling portion 2c2 of the lid-side sealing resin layer 2c that has moved to the bottom material 2, the lid material 2 and the bottom material 3 are combined. Can be resealed.

[Other configuration]
However, in the periphery of the second non-fused portion 13, due to the presence of the second non-fused portion 13, a decrease in adhesive force per unit area occurs, and in the vicinity of the second non-fused portion 13. Since it becomes difficult to partially reseal, even if resealed as shown in FIG. 6, the reseal of that part is released very easily. Alternatively, as shown in FIG. 3, the adhesion (resealing) of the lid material 2 and the bottom material 3 cannot be maintained around the second non-fused portion 13, and the plastic deformation when the lid material is opened is also combined. Thus, the base material 3 is separated.

  In addition, the cover material 2 is made of a film having a material characteristic such that the cover material 2 warps on the opposite side to the bottom material 3, and the adhesive force is further reduced between the cover material 2 and the bottom material 3. Is also possible. That is, it is also possible to make the structure easily separated from the bottom material 3 by the warping of the lid material 2 around the second non-fused portion 13.

  It should be noted that the adhesive resin layer is not a lid material but a structure arranged on the bottom material side, that is, the case where the laminated structure of the lid material and the laminated structure of the bottom material are used oppositely in the packaging container of the present invention. However, it goes without saying that the object of the present invention can be realized by utilizing the fact that delamination occurs between the adhesive resin layer and the bottom material side sealing resin layer.

[Heat seal in an embodiment of the present invention]
Next, the heat seal part 25 which performs the heat seal between the lid member 2 and the bottom member 3 described in FIG. 14 will be described with reference to FIG. In the heat seal portion 25, the shape of the heat plate 25a serving as a seal plate takes into account the presence of the second non-fused portion 13 and the second fused portion 14, and as shown in FIG. Are arranged in multiple numbers.

  At the position where the protrusion 25a1 exists, the high temperature hot plate 25a comes into contact with the lid member 2, and only the portion corresponding to the protrusion 25a1 in the lid member side seal resin layer 2c and the bottom member side seal resin layer 3b. As a result, the first fused portion 11 and the second fused portion 14 are formed, and the state shown in FIG. 4 is obtained.

[Modification of Embodiment of the Present Invention]
Below, the modification of embodiment of this invention is demonstrated using FIG. FIG. 8 is an enlarged front view taken along line BB of FIG. 1 shown in (a) to (c) of the modified example of the present invention. In this modification of the embodiment of the present invention, the same parts as those of the embodiment of the present invention are denoted by the same reference numerals and the description thereof is omitted.

  The packaging container according to the modification has the same configuration as that of the product 1 according to FIG. 1, but the linear non-fused portion 13 as the second non-fused portion in the embodiment of the present invention. Only the form is different.

  That is, as shown to Fig.8 (a) thru | or (c), the 2nd non-fusion | fusion part 17 assumes various forms. That is, since it is sufficient that the adhesive force between the lid member 2 and the bottom member 3 can be reduced around the second non-fused portion 17, the second non-fused portion 17 has various forms. is assumed.

  Therefore, the second non-fused portion 17 and the second fused portion 18 are provided regularly or irregularly, and the second non-fused portion 17 and the second fused portion at the time of resealing are provided. If the adhesive force between the lid member 2 and the bottom member 3 in 18 can be reduced, the object of the present invention can be realized.

  Accordingly, when the circular or dot-like second non-fused portions 17 are continuously and repeatedly arranged as shown in FIG. 5A, or as shown in FIG. When the second non-fused portion 17 is arranged in a geometric pattern, a configuration in which the second non-fused portion 17 of the geometric pattern is irregularly arranged as shown in FIG. However, the object of the present invention can be realized.

  The present invention can be embodied in many forms without departing from its essential characteristics. Therefore, it is needless to say that the above-described embodiment is exclusively for description and does not limit the present invention.

DESCRIPTION OF SYMBOLS 1 Packaging container 2 Lid material 2a Lid material side surface resin layer 2b Adhesive resin layer 2b1 Exposed part (adhesive material)
2c Lid material side sealing resin layer 2c1 1st peeling part 2c2 2nd peeling part 3 Bottom material 3a Bottom material side surface resin layer 3b Bottom material side sealing resin layer 5 Storage part 6 Food 11 First fusion part (heat Seal part)
12 First non-fused part (opening opening)
13 Second non-fused part (linear non-fused part)
14 Second Fused Portion 17 Second Non-Fused Portion (Modification)
18 Second fusion part 21 Bottom material side film 22 Cover material side film 23 Molding part 24 Filling region 25 Heat seal part 25a Hot plate (seal plate)
25a1 Projection 25b Seal mold 25b1 Seal rubber 25b2 Base part 26 Horizontal cutter part 27 Vertical cutter part 100 Conventional packaging container

Claims (7)

It is composed of a lid, a bottom, and a storage portion formed between the lid and the bottom.
The lid material is formed by sequentially laminating a lid material side surface resin layer, an adhesive resin layer, and a lid material side seal resin layer,
The bottom material is formed by laminating a bottom material side surface resin layer and a bottom material side sealing resin layer,
The lid material side sealing resin layer and the bottom material side sealing resin layer are fused around the storage portion by heat sealing to form a first fused portion,
At the time of opening, the lid member side sealing resin layer and the bottom material side sealing resin layer formed outside the first fused portion with respect to the storage portion are not heat sealed. With the fused portion as an opening, the adhesive resin layer is exposed by delamination between the adhesive resin layer and the lid-side sealing resin layer, and is fused to the bottom material with respect to the adhesive resin layer. Further, by adhering the lid material side sealing resin layer, a packaging container that enables the lid material and the bottom material to be resealed,
The lid member side sealing resin layer and the bottom material side sealing resin layer are fused between the opening and the first fused portion, and the second non-fused portion is fused. The second fusion part is provided regularly or irregularly, and the lid material and the bottom in the second non-fusion part and the second fusion part are more than the first fusion part. packaging containers, characterized in that it has a structure in which Ru reduces the adhesive strength of the wood. It is composed of a lid, a bottom, and a storage portion formed between the lid and the bottom.
The lid material is formed by laminating a lid material side surface resin layer and a lid material side sealing resin layer,
The bottom material is formed by sequentially laminating a bottom material side surface resin layer, an adhesive resin layer, and a bottom material side seal resin layer,
The lid material side sealing resin layer and the bottom material side sealing resin layer are fused around the storage portion by heat sealing to form a first fused portion,
At the time of opening, the lid member side sealing resin layer and the bottom material side sealing resin layer formed outside the first fused portion with respect to the storage portion are not heat sealed. With the fused part as an opening, the adhesive resin layer is exposed by delamination between the adhesive resin layer and the bottom material side sealing resin layer, and is fused to the lid material with respect to the adhesive resin layer. Further, by adhering the bottom material side sealing resin layer, a packaging container that enables the lid material and the bottom material to be resealed,
The lid member side sealing resin layer and the bottom material side sealing resin layer are fused between the opening and the first fused portion, and the second non-fused portion is fused. The second fusion part is provided regularly or irregularly, and the lid material and the bottom in the second non-fusion part and the second fusion part are more than the first fusion part. packaging containers, characterized in that it has a structure in which Ru reduces the adhesive strength of the wood.   The packaging container according to claim 1 or 2, wherein the second non-fused portion and the second fused portion are regularly or irregularly continuous.   The packaging container according to any one of claims 1 to 3, wherein the lid member and / or the bottom member is transparent.   The packaging container according to any one of claims 1 to 4, wherein the second non-fused portion is a linear body regularly arranged in parallel.   The packaging container according to any one of claims 1 to 5, wherein the second non-fusion part is surrounded by the second fusion part.   The said lid | cover material is comprised by the film with the raw material characteristic which warps on the opposite side to the said bottom material previously, The any one of the Claims 1 thru | or 6 characterized by the above-mentioned. Packaging containers.

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