JPH0713712U - Easy dismantling container - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a container that has a constant peel strength and can be easily disassembled. [Structure] Wrapping a paper having a thermoplastic resin layer on its inner and outer surfaces and sticking it on a body to form a body wall, and forming a container with an upper lid and / or a lower lid. An easily dismantleable container is characterized in that a release layer made of a resin that decomposes before being plasticized by heat is provided between a thermoplastic resin layer and a paper layer on one side of a polymerized portion of the material.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a container for packaging ice confectionery or the like as a content, and more particularly to a container that can be easily disassembled by providing a resin on its inner and outer surfaces.

[0002]

[Prior art]

 Hitherto, as a material for a container for packaging iced confectionery, a laminated material in which a paper layer is coated with polyethylene or the like, a film of polyethylene or the like is attached, or aluminum or the like is attached has been used. In order to expose the contents such as ice confectionery, it is necessary to break the body part of the heat-sealed container in the container molded from the laminated material as described above, which is time-consuming and fragile. The part that I got is a shabby part.

Therefore, in order to reduce the trouble at the time of disassembling and to clean the body of the peeled container, an attempt was made to dismantle the container easily by providing a peeling layer on the polymerized portion of the surface of the laminated material. . However, it was difficult to set the peeling strength to a certain level by providing the peeling layer on the surface depending on the conditions such as width and thickness of the peeling layer. Therefore, a laminated material as shown in Japanese Utility Model Publication No. 60-28592 was devised. As shown in FIG. 6, this laminated material has a release layer made of a thermoplastic resin at the polymerized portion between the paper layer as the base material and the polyethylene layer (16) on the surface, whereby the above-mentioned layer is formed. Tried to solve the problem.

[0004]

[Problems to be solved by the device]

 However, since the release layer for disassembling the container having the above structure is formed of the thermoplastic resin, it may be greatly affected by the environment such as temperature. In other words, the release layer formed of thermoplastic resin is not affected by the heat for heating given in the process of bonding the resin layer to the paper layer, the step of polymerizing the laminated materials and the step of thermally adhering, or the contents. Since it was affected by cold air after packaging a certain ice-candy, it was difficult to maintain a constant adhesive strength, and the container could not have a constant peel strength. Therefore, if the adhesive strength is high, it cannot be completely disassembled at the time of dismantling, and if the adhesive strength is low, there is a problem that the polymerized adhesive part peels off due to the impact received during manufacturing, transportation, sales, etc. It was

Further, in a conventional laminated material for molding a container, since a thin heat-adhesive resin layer is directly provided on the peeling layer, the resin on the peeling layer may peel off during molding of the container. Yes, there was a case where work efficiency deteriorated.

The present invention solves the above problems, and provides a container which has a constant peel strength and can be easily disassembled.

[0007]

[Means for Solving the Problems]

 SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention forms a container with a thermoplastic resin layer on the inner and outer surfaces of which is wound and pasted on a body to form a body wall, and an upper lid and / or a lower lid is attached. In the laminated material of the body, it is easy to characterize that a release layer made of a resin that decomposes before being plasticized by heat is provided between the thermoplastic resin layer and the paper layer on one side of the polymerized portion of the laminated material. A dismantling container is provided.

Further, in a laminated material of a body part, which is formed by winding a paper having a thermoplastic resin layer on its inner and outer surfaces and pasting the body to form a body wall, and forming a container having an upper lid and / or a lower lid attached thereto. The present invention provides an easily dismantleable container characterized by being formed by a laminated material in which a thermoplastic resin layer, an adhesive layer, a polymerized part peeling layer, a paper layer, and a thermoplastic resin layer are laminated in this order.

In addition, in a laminated material of a body for winding a paper provided with a thermoplastic resin layer on its inner and outer surfaces and pasting the body to form a body wall, and forming a container with an upper lid and / or a lower lid attached. The present invention provides an easily dismantleable container characterized by being formed by a laminated material in which a polyester resin layer, a polymerized part peeling layer, a paper layer, and a polyester resin layer are laminated in this order.

Further, in a laminated material for a body part, which is formed by winding a paper having a thermoplastic resin layer on its inner and outer surfaces and sticking it on a body to form a body wall, and forming a container having an upper lid and / or a lower lid attached thereto. And a polyethylene imine coating agent layer, a polyester resin layer, a polymerized part peeling layer, a paper layer, and a polyethylene layer, which are formed in this order from a laminated material, and an easily dismantleable container is provided.

In addition, in a laminated material of a body part, a paper having a thermoplastic resin layer on its inner and outer surfaces is wound and stuck to the body to form a body wall, and a container having an upper lid and / or a lower lid is formed. Another object of the present invention is to provide an easily dismantleable container characterized by being formed by a laminate material in which a polyamide resin layer, a polymerized part release layer, a paper layer, and a polyamide resin layer are laminated in this order.

Further, the present invention provides an easily dismantleable container characterized in that notches are provided on the left side and / or the right side or both the left and right sides of the release layer provided in the overlapping portion of the laminated material.

[0013]

[Action]

 According to the size of the container, the polymerized part of the blanks is heat-bonded to form the container, and the polymerized part of the body of the container is peeled and disassembled when opening. Since the peel strength of the heat-bonded portion of the container is always constant, the container peels at the upper layer of the peeling layer, so the container can be easily disassembled.

[0014]

【Example】

 The present invention will be described below with reference to the drawings. 1 to 5 are partial cross-sectional views of an embodiment of a laminated material of the present invention, FIG. 6 is a partial cross-sectional view of a conventional example, FIG. 7 is a blank shape of the container of the present invention, and FIG. 8 is a container of the present invention. This is an actual example.

In the first embodiment, as shown in FIG. 1A, a thermoplastic resin layer (4), a release layer (2), a paper layer (3) on the outer surface, and a thermoplastic resin layer (5) on the inner surface. It is formed of laminated materials laminated in this order. On the inner surface, a thermoplastic synthetic resin having good food hygiene, water resistance, processability, sealing suitability, etc. is used. Further, on the outer surface, a thermoplastic resin having good printability, thermal adhesiveness, strength, transparency, workability and the like is used. In the first embodiment, polyethylene is used as the thermoplastic resin layer on both the inner and outer surfaces. The paper layer (3) is also used to increase the strength of the container.

The release layer (2) is provided between the paper layer (3) and the outer thermoplastic resin layer (4) as shown in FIG. 1 (a). Notches (1) may be provided on the left side and / or right side or both left and right sides of the release layer (2). This cut (1) can also be provided by perforation, half cut, or the like. The peeling layer (2) is provided substantially linearly in a portion where both ends are polymerized. However, the shape of the peeling layer (2) is not limited to the linear shape as described above, and can be provided in conformity with the shape of the portion where both ends of the blank (18) overlap. The release layer (2) is made of a resin that decomposes before it exhibits plasticity due to the heat used when molding the container with the blanks (18). In the first embodiment, a mixture of silicone and cellulose mixed with a solvent of toluene and ethyl acetate to be about 8% is used. Specifically, a coating agent composition in which 7 parts by weight of the above 8% mixture, 2.4 parts by weight of ethyl acetate and 0.6 parts by weight of toluene are used is used. In addition, polyvinyl alcohol, polyacrylonitrile, or the like can be used as the resin that decomposes before being plasticized by heat.

Since the first embodiment is formed of the above-mentioned laminated material, when the container is disassembled at the time of eating and drinking, the thermoplastic resin layer (4) on the outer surface and the thermoplastic resin layer (5) on the inner surface are The peeling layer (2), which adheres strongly by heating but is formed by a resin that decomposes before being plasticized by heat, does not change due to heat buffering, so there is no change in peeling strength and the peeling layer (2 ) It is easily peeled off and disassembled at the top. That is, since a resin that decomposes before being plasticized by heat is used in the release layer (2), it is possible to always have a constant peel strength without being buffered by the environment such as temperature.

The blank (18) for the body of the container formed by the above-mentioned laminated material shown in FIG. 7 is formed by polymerizing a part and heat sealing the polymerized part to form the body. As shown in FIG. 1 (b), the polymerized portion of the molded container has an outer surface thermoplastic resin layer (4), a paper layer (3), an inner surface thermoplastic resin layer (5), and an outer surface thermoplastic resin layer (5). 4), the peeling layer (2), the paper layer (3), and the inner surface thermoplastic resin layer (5). Next, the lower lid is heat-sealed to this body, the contents such as ice confectionery are filled, and the upper lid is heat-sealed to form a container. The order of heat sealing of the upper lid and the lower lid is not fixed in the above order. When the container is dismantled, pulling apart the peeling initiation part (19) provided at the end of the polymerized part, the peeled layer (2) of the polymerized part and the outer thermoplastic resin layer (4) which are heat-sealed. The adhesive strength of the inner surface thermoplastic resin layer (5) is weaker than that of the outer surface thermoplastic resin layer (4). Therefore, as shown in FIG. The outer surface thermoplastic resin layer (4) is separated from the release layer (2) by the inner surface thermoplastic resin layer (5). At this time, since the blanks (18) are provided with the cut lines (1) on both sides of the peeling layer (2), only the upper part of the peeling layer (2) is surely peeled off, so that it is easily disassembled. be able to.

In the second embodiment, as shown in FIG. 2 (a), a thermoplastic resin layer (6), an adhesive layer (7), a release layer (2), a paper layer (3), and an inner surface are heat-treated as shown in FIG. It is formed of a laminated material in which the plastic resin layer (8) is laminated in this order. On the inner surface, a thermoplastic resin having good food hygiene, water resistance, processability and sealing suitability is used. On the outer surface, a thermoplastic resin having good printability, thermal adhesiveness, strength, transparency and workability is used. In the second embodiment, polyethylene is used as the thermoplastic resin layer on both the inner and outer surfaces. The paper layer (3) is also used to increase the strength of the container. The release layer (2) is provided between the paper layer (3) and the adhesive layer (7) as shown in FIG. 2 (a).

Since the adhesive layer (7) is provided between the peeling layer (2) and the thermoplastic resin layer (6), when the laminate material is formed, the laminate material (18) is formed. When the blanks (18) are molded into a container, the thermoplastic resin layer (6) as the surface layer is not peeled off by the peeling layer (2). This adhesive layer (7) is easily adhered to the surface thermoplastic resin layer (6) and the paper layer (3), and an adhesive that can be easily peeled off is used for the peeling layer (2). As the adhesive, a two-component curing type adhesive for dry lamination or the like is used. Although polyester urethane is used as the adhesive in the second embodiment, polyether urethane or the like is also used. Notches (1) may be provided on the left side and / or right side or both left and right sides of the release layer (2). This cut (1) can also be provided by perforation, half cut, or the like. Further, the peeling layer (2) is provided in a substantially linear shape in the portion to be polymerized. However, the shape of the peeling layer (2) is not limited to the linear shape as described above, and can be provided according to the shape of the portion where the blanks (18) overlap.

The body blanks (18) of the container formed by the above-mentioned laminated material shown in FIG. 7 are polymerized at both ends and the polymerized portions are heat-sealed to form the body. As shown in FIG. 2 (b), the polymerized portion of the molded container has an outer surface thermoplastic resin layer (6), an adhesive layer (7), a paper layer (3), and an inner side thermoplastic resin layer (8). ), The outer surface thermoplastic resin layer (6), the adhesive layer (7), the release layer (2), the paper layer (3), and the inner surface of the thermoplastic resin layer (8). Next, the lower lid is heat-sealed to the body, the contents such as ice confectionery are filled, and the upper lid is heat-sealed to form a container. The order of heat-sealing the upper lid and lower lid is not fixed in the order described above. When the container is dismantled, pulling apart the peeling start part (19) provided at the end of the polymerized part, the adhesive layer (7) and the peeled layer (2) of the heat-sealed polymerized part are bonded. The strength of the thermoplastic resin layer (7), the outer surface thermoplastic resin layer (6), and the inner surface thermoplastic resin layer (8) are weak compared to each other. The adhesive layer (7) and the outer polyethylene layer (6) on the layer (2) are peeled from the peeling layer (2) together with the inner thermoplastic resin layer (8). At this time, since the blanks (18) are provided with the cut lines (1) on both sides of the peeling layer (2), only the upper part of the peeling layer (2) is surely peeled off, so that it is easily disassembled. be able to.

In the third embodiment, as shown in FIG. 3A, the polyester resin layer (9), the release layer (2), the paper layer (3) are provided on the outer surface, and the polyester resin layer (10) is provided on the inner surface. It is made of laminated materials that are laminated in order. Further, in the fourth embodiment, as shown in FIG. 4 (a), a polyethylene imine coating agent layer (11), a polyester resin layer (12), a release layer (2), a paper layer (3), and a polyethylene layer are provided on the outer surface. It is formed of a laminated material laminated in the order of (13). On the inner surface, a thermoplastic resin having good food hygiene, water resistance, processability, sealing suitability, etc. is used. On the outer surface, a thermoplastic resin having good printability, thermal adhesiveness, strength, transparency, sealing suitability, etc. is used. In the third embodiment, the inner surface is made of polyester, and in the fourth embodiment, polyethylene is used as the thermoplastic resin layer. The paper layer (3) is used to increase the strength of the container. Further, as shown in FIGS. 3 (a) and 4 (a), the notch (1) can be provided on the left side and / or right side or both right and left sides of the release layer (2). This cut (1) can also be provided by perforation, half cut or the like. The peeling layer (2) is provided substantially linearly in a portion where both ends are polymerized. However, the shape of the peeling layer (2) is not limited to the linear shape as described above, and the peeling layer (2) can be provided according to the shape of the portion where both ends of the blank (18) overlap. The release layer (2) is provided between the paper layer (3) and the polyester resin layer (9) in Example 3 and as shown in FIG. ), It is provided between the paper layer (3) and the polyester resin layer (12).

In the third embodiment, a heat sealable polyethylene terephthalate film is used as the polyester synthetic resin. Further, in the fourth example, a polyethyleneimine-based coating agent layer (11) is provided on the surface of the polyester layer (7). The polyethyleneimine-based coating agent layer (11) is provided so as to be heat-sealable with the polyethylene layer (13). Since the third and fourth examples are formed of the above-mentioned laminated material, the outer surface of the resin is a polyester resin, so that a container having good printability and surface gloss can be formed. Further, since the container has excellent rigidity, the stacking property of the container and the filling property of the contents are excellent. Further, when the polyester resin layer is used on the inner surface as in the third embodiment, the odor of the resin is not easily absorbed by the contents, and the aroma component of the contents is difficult to be adsorbed by the resin, so that the taste is improved. An excellent container can be molded.

The body blanks (18) of the container formed by the above-mentioned laminated material shown in FIG. 7 have both end portions polymerized and the polymerized portions are heat-sealed to form the body portion. In Example 3, the polymerized portion of the molded container had an outer polyester layer (9), a paper layer (3), an inner polyester layer (10), and an outer polyester layer (as shown in FIG. 3B). 9), a release layer (2), a paper layer (3), and an inner polyester layer (10). In Example 4, as shown in FIG. 4 (b), an outer polyethyleneimine coating agent layer (11), Polyester layer (12), paper layer (3), polyethylene layer (13), outer surface polyethyleneimine coating agent layer (11), polyester layer (12), release layer (2), paper layer (3), polyethylene layer (13) ). Next, the lower lid is heat-sealed to this body, the contents such as ice confectionery are filled, and the upper lid is heat-sealed to form a container. The order of heat sealing of the upper lid and the lower lid is not guaranteed in the above-mentioned order.

When the container is dismantled, the peeling start portion (19) provided at the end of the polymerized portion is pulled so as to separate, and in the case of Example 3, the peeling layer (2) and the outer polyester layer (9) The adhesive strengths of the outer polyester layer (9) and the inner polyester layer (10) are weak, and the outer polyester layer (9) on the release layer (2) is the inner polyester as shown in FIG. 3 (c). It is peeled off from the release layer (2) together with the layer (10). In addition, in the case of Example 4, the adhesive strength between the peeling layer (2) and the polyester layer (12) is the adhesive strength between the polyethylene layer (13), the outer surface polyethyleneimine coating agent layer (11) and the polyester layer (12). As shown in FIG. 4 (c), the polyester layer (12) on the peeling layer (2) and the polyethyleneimine coating agent layer (11) on the outer surface of the peeling layer (2) together with the polyethylene layer (13) were weaker than those of the peeling layer (2). ) Is peeled from. At this time, since the blanks (18) are provided with the cut lines (1) on both sides of the peeling layer (2), only the upper part of the peeling layer (2) is surely peeled off, so that it is easily disassembled. be able to.

In the fifth embodiment, as shown in FIG. 5A, the polyamide resin layer (14), the peeling layer (2), the paper layer (3) are on the outer surface, and the polyamide resin layer (15) is on the inner surface. It is formed of a laminated material that is laminated in this order. On the inner surface, a thermoplastic resin with good food hygiene, water resistance and sealability is used. On the outer surface, a thermoplastic resin having good printability, thermal adhesiveness, strength, transparency, and sealability is used. In the fifth embodiment, nylon and polyamide resin layers are used as the thermoplastic resin layer on both the inner and outer surfaces. The paper layer (3) is used to increase the strength of the container. Further, as shown in FIG. 5 (a), it is also possible to provide notches (1) on the left side and / or right side or both the left and right sides of the release layer (2). This notch (1) can also be provided by perforations, half cuts, or the like. The peeling layer (2) is provided substantially linearly in a portion where both ends are polymerized. However, the shape of the peeling layer (2) is not limited to the linear shape as described above, and can be provided in conformity with the shape of the portion where both ends of the blank (18) overlap.

The body blanks (18) of the container formed by the above-mentioned laminated material shown in FIG. 7 have both end portions polymerized, and the polymerized portions are heat-sealed to form the body portion. As shown in FIG. 5 (b) in Example 5, the polymerized portion of the molded container had an outer surface, a polyamide resin layer (14), a paper layer (3), an inner polyamide resin layer (15), and an outer surface. The polyamide resin layer (15), the peeling layer (2), the paper layer (3), and the inner polyamide resin layer (15). Next, the lower lid is heat-sealed to this body, the contents such as ice confectionery are filled, and the upper lid is heat-sealed to form a container. The order of heat sealing of the upper lid and the lower lid is not fixed in the above order. When the container is dismantled, the peeling start portion (19) provided at the end of the polymerized portion is pulled so as to be separated, and in the case of Example 5, the peeling layer (2) and the outer surface polyamide resin layer (14) The adhesive strength between the outer polyamide-based resin layer (14) and the inner polyamide-based resin layer (15) is weaker, and as shown in FIG. 5 (c), the outer polyamide-based resin on the release layer (2) is The layer (14) is peeled from the peeling layer (2) together with the inner polyamide resin layer (15). At this time, since the blanks (18) are provided with the cut lines (1) on both sides of the peeling layer (2), only the upper part of the peeling layer (2) is surely peeled off, so that it is easily disassembled. be able to.

Since Example 5 is formed of the above-mentioned laminated material, the outer surface is made of a polyamide synthetic resin, so that a container having good printability and surface gloss can be formed. Since the inner and outer surfaces are made of a polyamide-based synthetic resin, the rigidity of the container is excellent, so that it is possible to mold a container having excellent container stacking properties and contents filling properties.

The shape of the container of the present invention may be cylindrical or conical as shown in FIG. 8, and the shape is not limited.

[0030]

[Effect of device]

 As described above, in the easily dismantleable container of the present invention, since the above-mentioned laminated material is formed of the resin that decomposes before the release layer exhibits plasticity by heat, it is not affected by the environment such as temperature, Since a constant peel strength can always be maintained, the container can be easily and reliably peeled and disassembled during eating and drinking.

Further, by providing a thermoplastic synthetic resin layer between the peeling layer and the thermoplastic resin layer on the outer surface, peeling by the peeling layer at the time of molding is prevented, and when the container is disassembled at the time of eating and drinking, it can be easily and surely made. Can be peeled and disassembled.

Further, by molding the outer surface of the polyester synthetic resin, it is possible to mold a container having good printability and surface gloss, and since the container is excellent in rigidity, stacking property of the container, Excellent in filling properties of contents. When the polyester layer is used, the odor of the resin is less likely to be absorbed by the contents, and the aroma component of the contents is less likely to be absorbed by the resin, so that a container having an excellent taste can be formed.

Further, since the outer surface is a polyamide synthetic resin, it is possible to mold a container having good printability and surface gloss. Since the inner and outer surfaces are made of a polyamide-based synthetic resin, the rigidity of the container is excellent, so that it is possible to form a container having excellent stacking properties of the container and filling properties of the contents.

[Brief description of drawings]

1A is a partial cross-sectional view of a first embodiment of the present invention, FIG. 1B is a partial cross-sectional view of a blank portion of a first embodiment of the present invention, and FIG. 1C is a blank of the first embodiment of the present invention. It is a partial cross-sectional view at the time of dismantling.

2A is a partial cross-sectional view of a second embodiment of the present invention, FIG. 2B is a partial cross-sectional view of a blank portion of the second embodiment of the present invention, and FIG. 2C is a blank of the second embodiment of the present invention. It is a partial cross-sectional view at the time of dismantling.

3A is a partial cross-sectional view of a third embodiment of the present invention, FIG. 3B is a partial cross-sectional view of a blank portion of the third embodiment of the present invention, and FIG. 3C is a blank of the third embodiment of the present invention. It is a partial cross-sectional view at the time of dismantling.

4A is a partial sectional view of a fourth embodiment of the present invention, FIG. 4B is a partial sectional view of a blank portion of the fourth embodiment of the present invention, and FIG. 4C is a blank of the fourth embodiment of the present invention. It is a partial cross-sectional view at the time of dismantling.

5A is a partial cross-sectional view of a fifth embodiment of the present invention, FIG. 5B is a partial cross-sectional view of a blank of the fifth embodiment of the present invention, and FIG. 5C is a blank of the fourth embodiment of the present invention. It is a partial cross-sectional view at the time of dismantling.

FIG. 6 is a partial cross-sectional view of a partial cross-sectional view of a conventional example.

FIG. 7 is a body blank shape of a container according to an embodiment of the present invention.

FIG. 8 is a partial cross-sectional view of a perspective view of the container of the present invention.

[Explanation of symbols]

 1 ... Notching line 2 ... Release layer 3 ... Paper layer 4 ... Thermoplastic resin layer 5 ... Thermoplastic resin layer 6 ... Thermoplastic resin layer 7 ... Adhesive layer 8 ... Thermoplastic resin layer 9 ...... Polyester resin layer 10 ...... Polyester resin layer 11 ...... Polyethylene imine coating agent layer 12 ...... Polyester resin layer 13 ...... Polyethylene layer 14 ...... Polyamide resin layer 15 ...... Polyamide resin layer 16 ...... Polyethylene Layer 17 ...... Polyethylene layer 18 ...... Blanks 19 ...... Peeling start part

Claims (6)

[Scope of utility model registration request] 1. A laminated material for a body for winding a paper having a thermoplastic resin layer on its inner and outer surfaces and bonding the body to form a body wall, and forming a container having an upper lid and / or a lower lid attached thereto. An easily dismantleable container, wherein a release layer made of a resin that decomposes before being plasticized by heat is provided between one of the thermoplastic resin layers and the paper layer of the polymerized portion of the laminated material. 2. A laminated material for a body for winding a paper having a thermoplastic resin layer on its inner and outer surfaces, and sticking the body to form a body wall to form a container having an upper lid and / or a lower lid. , A thermoplastic resin layer, an adhesive layer, a polymerized part peeling layer, a paper layer, and a thermoplastic resin layer, which are laminated in this order, and are molded using a laminated material. 3. A laminated material for a body for winding a paper having a thermoplastic resin layer on its inner and outer surfaces and bonding the body to form a body wall to form a container having an upper lid and / or a lower lid. An easily dismantleable container characterized by being formed by a laminated material in which a polyester resin layer, a polymerized part release layer, a paper layer, and a polyester resin layer are laminated in this order. 4. A laminated material for a body for winding a paper having a thermoplastic resin layer on its inner and outer surfaces and bonding the body to form a body wall to form a container having an upper lid and / or a lower lid. And a polyethyleneimine coating agent layer, a polyester-based resin layer, a polymerized part release layer, a paper layer, and a polyethylene layer, which are laminated in this order for molding. 5. A laminated material of a body for winding a paper having a thermoplastic resin layer on its inner and outer surfaces and bonding the body to form a body wall to form a container having an upper lid and / or a lower lid. An easily dismantleable container, characterized by being formed from a laminated material in which a polyamide resin layer, a polymerized part release layer, a paper layer, and a polyamide resin layer are laminated in this order. 6. The easily dismantleable container according to any one of 1 to 5, wherein notches are provided on the left side and / or the right side or both the left and right sides of the release layer provided in the overlapping portion of the laminated material.