Delaminated container

Abstract

A delaminated container has a main body portion and an opening portion. The opening portion is closer to an opening of the delaminated container than the main body portion to the opening. An accommodation space of the delaminated container is formed by a body inner surface of the main body portion and an opening inner surface of the opening portion. The delaminated container includes a first layer and a second layer. The first layer includes a first tightly-attached section. At the main body portion, the first layer is closer to the body inner surface than the second layer and exposed on the body inner surface. The second layer includes a second tightly-attached section. The first tightly-attached section and the second tightly-attached section are tightly attached to each other and both located at the opening portion of the delaminated container. Accordingly, it is advantageous in preventing the delamination between the first layer and the second layer at the opening portion, and unaffectedly unloading the content therein.

Description

[Technical Field]

[0001] The present invention relates to a lamination peeling container, and particularly to a lamination peeling container with an opening that is not easily peeled off. [Previous Technology]

[0002] With the rapid advancement of various technologies, the application of stacked stripping containers is becoming increasingly widespread. However, in the use of stacked stripping containers, when the inner and outer layers of the main body are in a stripping state, the inner and outer layers at the opening are easily stripped simultaneously, resulting in complete separation of the inner and outer layers and causing inconvenience in use. This problem is also a current bottleneck in manufacturing. The inner layer needs to be easily stripped to avoid affecting the discharge of contents, but complete separation is undesirable; these two aspects are contradictory design considerations.

[0003] Based on the above, there is an urgent need in the market to develop a stacking delamination container that can effectively avoid complete separation of the inner and outer layers without affecting the discharge of the contents. [Summary of the Invention]

[0004] The present invention provides a stacking peel container, wherein the first close-fitting area of ​​the first layer and the second close-fitting area of ​​the second layer are both located at the opening of the stacking peel container and are in close contact with each other, which helps to prevent the first layer and the second layer from peeling off at the opening and does not affect the discharge of the contents.

[0005] According to an embodiment of the present invention, a delamination container is provided, having a main body and an opening. The opening is closer to the main body than the main body. The inner surface of the main body and the inner surface of the opening form a receiving space for the delamination container. The delamination container includes a first layer and a second layer. The first layer includes a first adhering area. The first layer is closer to the main body than the second layer and protrudes from the inner surface of the main body. The second layer includes a second adhering area, and the first adhering area and the second adhering area are in close contact with each other. Both the first adhering area and the second adhering area are located at the opening of the delamination container. This helps to prevent the first layer and the second layer from peeling off at the opening and does not affect the discharge of the contents.

[0006] In an embodiment of the stacking and peeling container, the first bonding area may include a sandwich section, and the second bonding area may include an inner bonding section, at least a portion of the sandwich section and the inner bonding section being in close contact with each other, the inner bonding section being closer to the inner surface of the opening than the sandwich section, and the sandwich section not being exposed on the inner surface of the opening.

[0007] In an embodiment of the stacking peeling container, the inner close-fitting section may not be exposed on the inner surface of the opening.

[0008] In an embodiment of the stacking peeling container, the first bonding area may further include a first opening segment, which is in close contact with another part of the inner bonding segment and exposed on the inner surface of the opening. The first opening segment extends from the opening toward the main body and connects to the interlayer segment.

[0009] In an embodiment of the stacking stripping container, the stacking stripping container has an opening normal direction, which is the normal direction of the virtual plane surrounded by the opening, and in the opening normal direction, the ratio of the length of the interlayer segment to the length of the first opening segment can be between 0.3 and 1.

[0010] In an embodiment of the stacking peeling container, the second close-fitting area may include a second opening segment that is exposed on the inner surface of the opening and extends from the opening toward the main body.

[0011] In an embodiment of the stacking peeling container, the first bonding area may include a sandwich section, and the second bonding area may further include an inner bonding section, at least a portion of the sandwich section and the inner bonding section being in close contact with each other, and the sandwich section not being exposed on the inner surface of the opening, and the second opening section being connected to the inner bonding section.

[0012] In an embodiment of the stacking peeling container, the inner diameter of the inner surface of the opening decreases from the opening toward the main body.

[0013] By using the stacking peeling container of the above embodiment, maintaining the first layer exposed on the inner surface of the opening can simultaneously achieve the effect of being difficult to peel and reduce manufacturing complexity.

[0014] According to another embodiment of the present invention, a lamination peeling container is provided, having a main body and an opening. The opening is closer to the main body than the main body. The inner surface of the main body and the inner surface of the opening of the opening form a receiving space for the lamination peeling container. The lamination peeling container includes a first layer and a second layer. The first layer includes a first adhesion region. The first layer is closer to the main body than the second layer and is exposed on the inner surface of the main body. The second layer includes a second adhesion region, and the first adhesion region and the second adhesion region are in close contact with each other. Both the first adhesion region and the second adhesion region are located at the opening of the lamination peeling container and form an inward fold structure. This helps to prevent the first layer and the second layer from peeling off at the opening, and can reduce the manufacturing cost of the lamination peeling container and improve its production efficiency.

[0015] In an embodiment of the stacking and peeling container, the first bonding area may include a sandwich section, and the second bonding area may include an inner bonding section and an outer bonding section. The inner side of the sandwich section is in close contact with at least a portion of the inner bonding section, and the outer side of the sandwich section is in close contact with at least a portion of the outer bonding section. The sandwich section is not exposed on the inner surface of the opening.

[0016] In the laminated peeling container of the above embodiment, the sandwich segment of the first layer being covered by the second layer helps to improve the strength of the adhesion.

Implementation Method

[0018] Several embodiments of the present invention will now be described with reference to the drawings. For clarity, many practical details will be set forth in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and elements will be shown in the drawings in a simple schematic manner; and repeated elements may be denoted by the same number.

[0019] Figure 1A shows a perspective view of the lamination peeling container 100 according to a first embodiment of the present invention, Figure 1B shows a side view of the lamination peeling container 100 according to the first embodiment, Figure 1C shows a cross-sectional view of the lamination peeling container 100 along section line 1C-1C according to Figure 1B, and Figure 1D shows a schematic diagram of a portion 1D according to Figure 1C. Referring to Figures 1A to 1D, the lamination peeling container 100 has a main body portion 150 and an opening portion 160. The opening portion 160 is closer to the opening 175 of the lamination peeling container 100 than the main body portion 150. The inner surface 154 of the main body portion 150 and the inner surface 164 of the opening of the opening portion 160 form a receiving space 170 of the lamination peeling container 100. The lamination peeling container 100 includes a first layer 110 and a second layer 120.

[0020] Referring to Figure 1D, the first layer 110 includes a first adhering area 111. The first layer 110 is closer to the second layer 120 at the main body portion 150 and protrudes from the inner surface 154 of the main body. The second layer 120 includes a second adhering area 122. The first adhering area 111 and the second adhering area 122 are in close contact with each other. Both the first adhering area 111 and the second adhering area 122 are located at the opening 160 of the lamination peeling container 100. This helps to prevent the first layer 110 and the second layer 120 from peeling off at the opening 160 and does not affect the discharge of the contents. Furthermore, according to the present invention, the first layer of the lamination peeling container refers to the innermost layer at the main body portion, and the second layer refers to the outermost layer at the main body portion, and the number of second layers can be two or more.

[0021] In detail, the first bonding area 111 and the second bonding area 122 are both located at the opening 160 of the lamination peeling container 100 and form an inward fold structure 130. This helps to prevent the first layer 110 and the second layer 120 from peeling off at the opening 160, and can reduce the manufacturing cost of the lamination peeling container 100 and improve its production efficiency.

[0022] To further explain, the inner fold structure 130 increases the contact area of ​​the first layer of the blank in a general blow molding process, thereby increasing its friction to achieve the function of close adhesion and covering, and can be integrally formed on the blow molding machine without the need for additional equipment.

[0023] Furthermore, the first adhesion area 111 and the second adhesion area 122 can be formed during the manufacturing process of the stacking release container 100. For example, the first adhesion area 111 and the second adhesion area 122 can be formed during the manufacturing process when the blow needle enters the blank of the stacking release container 100 before molding or when it is molten. When the blow needle enters the opening of the blank, the outer wall of the blow needle adheres to the first layer of the blank (i.e., the inner or innermost layer of the blank). At least a portion of the first layer of the blank is pulled down by the outer wall of the blow needle and folded back along the inner surface of the opening, so that the first layer and the second layer (i.e., the outer layer of the blank) of the blank adhere tightly. Through the extrusion and cutting of the outer wall of the blow needle and the mold, the inner fold structure 130 is formed, thereby increasing the contact area between the first layer 110 and the second layer 120 (i.e., the inner and outer layers) of the stacking release container 100 after molding. The second layer 120 forms a function of covering the first layer 110 at the opening 160, making it difficult to peel off. The thickness of the first layer 110 at the opening 160 can be inconsistent because when the blow needle enters the opening of the blank, it will compress the thickness of the first layer 110 at the opening 160 from the opening 175 toward the main body 150, thus creating a change from thin to thick (not shown in the figure), and the shape of the inner surface 164 of the opening corresponds to the shape of the outer wall of the blow needle. Since only the shape of the inner surface 164 of the opening 160 is molded, the external shape and appearance design of the lamination release container 100 are not affected. Furthermore, by matching the geometry of the outer wall of the blow needle with that of the mold, the blank can be compressed and cut at the opening, and then high-pressure air can be blown in to integrally mold lamination release containers with different opening shapes.

[0024] The first bonding area 111 includes a sandwich section 116, and the second bonding area 122 includes an inner bonding section 127. A portion of the sandwich section 116 and the inner bonding section 127 are in close contact with each other to increase their friction. The inner bonding section 127 is closer to the inner surface 164 of the opening than the sandwich section 116, and the sandwich section 116 is not exposed on the inner surface 164 of the opening. Thus, the sandwich section 116 of the first layer 110 being covered by the second layer 120 helps to improve the strength of the bond. According to an embodiment of the invention, the lamination peeling container has an opening normal direction, which is the normal direction of the virtual plane surrounded by the opening. A portion of the second layer exists in a direction perpendicular to the normal direction of the sandwich section and toward the inner surface of the opening.

[0025] Furthermore, the inner tightly fitting section 127 is not exposed on the inner surface 164 of the opening. In this way, maintaining the first layer 110 exposed on the inner surface 164 of the opening can simultaneously achieve the effect of being difficult to peel off and reduce manufacturing complexity.

[0026] The first bonding area 111 further includes a first opening segment 115, which is in close contact with another part of the inner bonding segment 127 and exposed on the inner surface 164 of the opening. The first opening segment 115 extends from the opening 175 toward the main body 150 and connects to the interlayer segment 116. In this way, during the manufacturing process of the lamination peeling container 100, only a part of the first layer in the blank is pulled down by the outer wall of the blow needle and folded back along the inner surface of the opening and in close contact with the second layer of the blank, so that the first opening segment 115 of the first layer 110 of the formed lamination peeling container 100 is exposed on the inner surface 164 of the opening at the opening 175, and the first layer 110 and the second layer 120 are not easily peeled off at the opening 160.

[0027] The delamination container 100 has an opening normal direction N1, which is the normal direction of the virtual plane 176 surrounded by the opening 175. In the opening normal direction N1, the ratio of the length L6 of the interlayer segment 116 to the length L5 of the first opening segment 115 is between 0.3 and 1 (inclusive). In the first embodiment, the length L6 is 2.4 mm, the length L5 is 6.9 mm, the ratio of length L6 to length L5 is 0.35, and the lengths L5 and L6 can be adjusted by the depth to which the blow needle enters the blank during the manufacturing process of the delamination container 100. This helps to improve the stability of the bond.

[0028] The inner diameter of the inner surface 164 of the opening decreases from the opening 175 toward the main body 150. This allows the first contact area 111 to be non-parallel to the second contact area 122, helping to reduce the risk of easy peeling of the opening 160 while also ensuring manufacturing convenience. Furthermore, the shape of the inner surface 164 of the opening can correspond to the shape of the outer wall of the blow needle during the manufacturing process of the lamination release container 100 (i.e., at least a portion of the outer wall of the blow needle is wider at the top and narrower at the bottom). According to other embodiments of the invention, the shape of the outer wall of the blow needle can also be other geometric shapes.

[0029] The second bonding area 122 further includes an outer bonding segment 128, wherein the inner side 117 of the interlayer segment 116 is bonded to a portion of the inner bonding segment 127, and the outer side 118 of the interlayer segment 116 is bonded to a portion of the outer bonding segment 128 to increase friction. The interlayer segment 116 is not exposed on the inner surface 164 of the opening. In this way, the interlayer segment 116 of the first layer 110 being covered by the second layer 120 helps to improve the bonding strength.

[0030] Specifically, the first bonding area 111 sequentially includes a first opening segment 115 and a sandwich segment 116 in the direction from the opening 175 toward the main body 150. The second bonding area 122 sequentially includes an inner bonding segment 127 and an outer bonding segment 128 in the direction from the inner surface 164 of the opening through the opening 175 toward the outer surface 169 of the opening. That is, the inner bonding segment 127 and the outer bonding segment 128 of the second bonding area 122 cover the sandwich segment 116 of the first bonding area 111 and are connected to the sandwich segment 116 in the direction away from the main body 150. The first bonding area 111 and the second bonding area 122 form an inward folded structure 130, which can be formed by only the first layer of the blank in the stacking and peeling container 100 being inwardly folded. Furthermore, the first opening segment 115 of the first bonding area 111 is exposed on the inner surface 164 of the opening, while the second bonding area 122 is not exposed on the inner surface 164 of the opening.

[0031] Figure 2 shows a partial cross-sectional view of the delamination container 200 of the second embodiment of the present invention. Referring to Figure 2, the delamination container 200 has a main body portion 250 and an opening portion 260. The opening portion 260 is closer to the opening 275 of the delamination container 200 than the main body portion 250. The inner surface 254 of the main body portion 250 and the inner surface 264 of the opening of the opening portion 260 form the receiving space 270 of the delamination container 200. The delamination container 200 includes a first layer 210 and a second layer 220. The first layer 210 includes a first close-fitting area 211. The first layer 210 is closer to the second layer 220 in the main body portion 250 and is exposed on the inner surface 254 of the main body. The second layer 220 includes a second close-fitting area 222. The first close-fitting area 211 and the second close-fitting area 222 are in close contact with each other. The first close-fitting area 211 and the second close-fitting area 222 are both located in the opening portion 260 of the lamination peeling container 200 and form an inward fold structure 230.

[0032] The first tightly fitting area 211 includes a sandwich section 216, and the second tightly fitting area 222 includes an inner tightly fitting section 227 and an outer tightly fitting section 228. The inner side surface 217 of the sandwich section 216 is in close contact with the inner tightly fitting section 227, and the outer side surface 218 of the sandwich section 216 is in close contact with the outer tightly fitting section 228. An air gap (not labeled) may or may not exist in the sandwich section 216. The inner tightly fitting section 227 is closer to the sandwich section 216 and protrudes from the inner surface 264 of the opening, while the sandwich section 216 is not protruding from the inner surface 264 of the opening. Furthermore, the inner diameter of the inner surface 264 of the opening decreases from the opening 275 toward the main body 250.

[0033] The second close-fitting area 222 further includes a second opening segment 225, which is exposed on the inner surface 264 of the opening and extends from the opening 275 toward the main body 250. In this way, during the manufacturing process of the lamination release container 200, a portion of the first layer and a portion of the second layer in the blank are pulled down by the outer wall of the blow needle and folded back along the inner surface of the opening, making the first and second layers of the blank adhere tightly, increasing the contact area and friction, and making the second layer 220 of the formed lamination release container 200 exposed on the inner surface 264 of the opening at the opening 275, and the first layer 210 and the second layer 220 are not easily peeled off at the opening 260.

[0034] Furthermore, the sandwich section 216 and the inner tightly attached section 227 are tightly attached to each other, and the sandwich section 216 is not exposed on the inner surface 264 of the opening. The second opening section 225 is connected to the inner tightly attached section 227. In this way, it is advantageous to realize the inward folding structure 230 in which the first layer and the second layer in the blank of the stacking and peeling container 200 are folded inward together.

[0035] Specifically, the second bonding area 222 sequentially includes an inner bonding segment 227, a second opening segment 225, and an outer bonding segment 228 from the inner surface 264 of the opening through the opening 275 toward the outer surface 269 of the opening. That is, the inner bonding segment 227, the second opening segment 225, and the outer bonding segment 228 of the second bonding area 222 cover the interlayer segment 216 of the first bonding area 211 and are connected to the interlayer segment 216 in a direction away from the main body 250. The first bonding area 211 and the second bonding area 222 form an inward folded structure 230, which can be formed by folding the first layer and the second layer in the blank of the lamination peeling container 200 together inward. Furthermore, the second opening segment 225, the inner bonding segment 227, and the first bonding area 211 of the second bonding area 222 are sequentially exposed on the inner surface 264 of the opening from the opening 275 toward the main body 250.

[0036] Figure 3 shows a partial cross-sectional view of the delamination container 300 of the third embodiment of the present invention. Referring to Figure 3, the delamination container 300 has a main body portion 350 and an opening portion 360. The opening portion 360 is closer to the opening 375 of the delamination container 300 than the main body portion 350. The inner surface 354 of the main body portion 350 and the inner surface 364 of the opening of the opening portion 360 form the receiving space 370 of the delamination container 300. The delamination container 300 includes a first layer 310 and a second layer 320. The first layer 310 includes a first close-fitting area 311. The first layer 310 is closer to the second layer 320 in the main body portion 350 and is exposed on the inner surface 354 of the main body. The second layer 320 includes a second close-fitting area 322. The first close-fitting area 311 and the second close-fitting area 322 are in close contact with each other. The first close-fitting area 311 and the second close-fitting area 322 are both located in the opening portion 360 of the lamination peeling container 300 and form an inward fold structure 330.

[0037] The first bonding area 311 includes a sandwich section 316, and the second bonding area 322 includes an inner bonding section 327 and an outer bonding section 328. The inner side surface 317 of the sandwich section 316 is in close contact with the inner bonding section 327, and the outer side surface 318 of the sandwich section 316 is in close contact with the outer bonding section 328. The inner bonding section 327 is closer to the sandwich section 316 and protrudes from the inner surface 364 of the opening, while the sandwich section 316 is not protruding from the inner surface 364 of the opening. Furthermore, the inner diameter of the inner surface 364 of the opening decreases from the opening 375 toward the main body 350.

[0038] The second close-fitting area 322 further includes a second opening segment 325, which is exposed on the inner surface 364 of the opening and extends from the opening 375 toward the main body 350. The second opening segment 325 is connected to the inner close-fitting segment 327.

[0039] Specifically, the second bonding area 322 sequentially includes an inner bonding section 327, a second opening section 325, and an outer bonding section 328 from the inner surface 364 of the opening through the opening 375 toward the outer surface 369 of the opening. That is, the inner bonding section 327, the second opening section 325, and the outer bonding section 328 of the second bonding area 322 cover the interlayer section 316 of the first bonding area 311 and are connected to the interlayer section 316 in a direction away from the main body 350. The first bonding area 311 and the second bonding area 322 form an inward folded structure 330, which can be formed by folding the first layer and the second layer in the blank of the lamination peeling container 300 together inward. Furthermore, the second opening section 325, the inner bonding section 327, and the first bonding area 311 of the second bonding area 322 are sequentially exposed on the inner surface 364 of the opening from the opening 375 toward the main body 350.

[0040] Figure 4 shows a partial cross-sectional view of the delamination container 400 of the fourth embodiment of the present invention. Referring to Figure 4, the delamination container 400 has a main body portion 450 and an opening portion 460. The opening portion 460 is closer to the opening 475 of the delamination container 400 than the main body portion 450. The inner surface 454 of the main body portion 450 and the inner surface 464 of the opening of the opening portion 460 form the receiving space 470 of the delamination container 400. The delamination container 400 includes a first layer 410 and a second layer 420. The first layer 410 includes a first close-fitting area 411. The first layer 410 is closer to the second layer 420 in the main body portion 450 and is exposed on the inner surface 454 of the main body. The second layer 420 includes a second close-fitting area 422. The first close-fitting area 411 and the second close-fitting area 422 are in close contact with each other. The first close-fitting area 411 and the second close-fitting area 422 are both located in the opening portion 460 of the lamination peeling container 400 and form an inward fold structure 430.

[0041] The first contact area 411 includes a sandwich section 416, and the second contact area 422 includes an inner contact section 427 and an outer contact section 428. The inner side surface 417 of the sandwich section 416 is in close contact with the inner contact section 427, and the outer side surface 418 of the sandwich section 416 is in close contact with the outer contact section 428. Thus, the first contact area 411 (i.e., the sandwich section 416) and the second contact area 422 (i.e., the inner contact section 427 and the outer contact section 428) have a larger contact area to increase their friction. An air gap (not labeled in the figure) may or may not exist in the sandwich section 416, and the sandwich section 416 is exposed on the inner surface 464 of the opening, while the inner contact section 427 and the outer contact section 428 are not exposed on the inner surface 464 of the opening. Furthermore, the inner diameter of the inner surface 464 of the opening near the opening is larger than the inner diameter away from the opening.

[0042] The second close-fitting area 422 further includes a second opening segment 425, which is exposed on the inner surface 464 of the opening and extends from the opening 475 toward the main body 450. The second opening segment 425 is connected to the outer close-fitting segment 428.

[0043] Specifically, the outer tight-fitting section 428 and the inner tight-fitting section 427 of the second tight-fitting area 422 cover the interlayer section 416 of the first tight-fitting area 411 and are connected to the interlayer section 416 in the direction toward the main body 450. The first tight-fitting area 411 and the second tight-fitting area 422 form an inward folded structure 430, which can be formed by only the first layer of the blank of the stacking and peeling container 400 being inwardly folded. Furthermore, the second opening section 425 of the second tight-fitting area 422 and the interlayer section 416 of the first tight-fitting area 411 are sequentially exposed on the inner surface 464 of the opening from the opening 475 in the direction toward the main body 450.

[0044] Figure 5 shows a partial cross-sectional view of the delamination container 500 of the fifth embodiment of the present invention. Referring to Figure 5, the delamination container 500 has a main body portion 550 and an opening portion 560. The opening portion 560 is closer to the opening 575 of the delamination container 500 than the main body portion 550. The inner surface 554 of the main body portion 550 and the inner surface 564 of the opening of the opening portion 560 form the receiving space 570 of the delamination container 500. The delamination container 500 includes a first layer 510 and a second layer 520. The first layer 510 includes a first close-fitting area 511. The first layer 510 is closer to the second layer 520 in the main body portion 550 and is exposed on the inner surface 554 of the main body. The second layer 520 includes a second close-fitting area 522. The first close-fitting area 511 and the second close-fitting area 522 are in close contact with each other. The first close-fitting area 511 and the second close-fitting area 522 are both located in the opening portion 560 of the lamination peeling container 500 and form an inward fold structure 530.

[0045] The first tightly fitting area 511 includes a sandwich section 516, and the second tightly fitting area 522 includes an inner tightly fitting section 527. The inner side surface 517 of the sandwich section 516 is tightly fitted to the inner tightly fitting section 527. The outer side surface 518 of the sandwich section 516 may have an air gap (not labeled in the figure) with the second tightly fitting area 522 or may be tightly fitted to each other. The sandwich section 516 is exposed on the inner surface 564 of the opening, while the inner tightly fitting section 527 is not exposed on the inner surface 564 of the opening. Furthermore, the inner diameter of the inner surface 564 of the opening near the opening is larger than the inner diameter away from the opening.

[0046] The second close-fitting area 522 further includes a second opening segment 525, which is exposed on the inner surface 564 of the opening and extends from the opening 575 toward the main body portion 550. The second opening segment 525 is connected to the inner close-fitting segment 527.

[0047] Specifically, the first bonding area 511 and the second bonding area 522 form an inward folded structure 530, which can be formed by only the first layer of the blank in the stacking and peeling container 500 being inwardly folded. The second opening section 525 of the second bonding area 522 and the sandwich section 516 of the first bonding area 511 are sequentially exposed on the inner surface 564 of the opening from the opening 575 toward the main body 550.

[0048] Figures 6, 7, and 8 respectively show partial cross-sectional views of the lamination peeling container 600 of the sixth, seventh, and eighth embodiments of the present invention. Referring to Figures 6 to 8, the lamination peeling container 600 has a main body 650 and an opening 660. The opening 660 is closer to the opening 675 of the lamination peeling container 600 than the main body 650. The inner surface 654 of the main body 650 and the inner surface 664 of the opening of the opening 660 form the receiving space 670 of the lamination peeling container 600. The lamination peeling container 600 includes a first layer 610 and a second layer 620. The first layer 610 includes a first close-fitting area 611. The first layer 610 is closer to the second layer 620 in the main body portion 650 and is exposed on the inner surface 654 of the main body. The second layer 620 includes a second close-fitting area 622. The first close-fitting area 611 and the second close-fitting area 622 are in close contact with each other. Both the first close-fitting area 611 and the second close-fitting area 622 are located in the opening portion 660 of the lamination peeling container 600.

[0049] Specifically, the second contact area 622 includes a second opening segment 625 and an outer contact segment 628. The second opening segment 625 is exposed on the inner surface 664 of the opening and extends from the opening 675 toward the main body 650. The second opening segment 625 connects to the outer contact segment 628, which is not exposed on the inner surface 664 of the opening. The first contact area 611 is in close contact with the outer contact segment 628. Furthermore, the second opening segment 625 and the first contact area 611 of the second contact area 622 are sequentially exposed on the inner surface 664 of the opening from the opening 675 toward the main body 650. The inner diameter of the inner surface 664 near the opening is larger than the inner diameter away from the opening.

[0050] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims. [Simplified Explanation of the Diagram]

[0017] Figure 1A shows a perspective view of the delamination container of the first embodiment of the present invention; Figure 1B shows a side view of the delamination container of the first embodiment; Figure 1C shows a cross-sectional view of the delamination container along section line 1C-1C according to Figure 1B; Figure 1D shows a schematic diagram of a portion of Figure 1C; Figure 2 shows a partial cross-sectional view of the delamination container of the second embodiment of the present invention; Figure 3 shows a partial cross-sectional view of the delamination container of the third embodiment of the present invention; Figure 4 shows a partial cross-sectional view of the delamination container of the fourth embodiment of the present invention; Figure 5 shows a partial cross-sectional view of the delamination container of the fifth embodiment of the present invention; Figure 6 shows a partial cross-sectional view of the delamination container of the sixth embodiment of the present invention; Figure 7 shows a partial cross-sectional view of the delamination container of the seventh embodiment of the present invention; and Figure 8 shows a partial cross-sectional view of the delamination container of the eighth embodiment of the present invention.

Claims

1. A delamination container having a main body and an opening, the opening being closer to the main body than the main body, an inner surface of the main body and an inner surface of the opening forming a receiving space for the delamination container, the delamination container comprising: a first layer including a first contact area; and a second layer, the first layer being closer to the main body than the second layer and exposed on the inner surface of the main body, the second layer including a second contact area, the first contact area and the second contact area being in contact with each other; wherein... Both the first and second bonding areas are located at the opening of the lamination peeling container.

2. The stacking and peeling container as claimed in claim 1, wherein the first bonding region includes a sandwich section, the second bonding region includes an inner bonding section, the sandwich section and at least a portion of the inner bonding section are bonded to each other, the inner bonding section is closer to the inner surface of the opening than the sandwich section, and the sandwich section is not exposed on the inner surface of the opening.

3. The stacking peeling container as described in claim 2, wherein the inner close-fitting section is not exposed on the inner surface of the opening.

4. The stacking peeling container as claimed in claim 2, wherein the first bonding area further includes a first opening segment that is bonded to another portion of the inner bonding segment and exposed on the inner surface of the opening, the first opening segment extending from the opening toward the body portion and connecting the interlayer segment.

5. The delamination container as described in claim 4, wherein the delamination container has an opening normal direction that is the normal direction of a virtual plane surrounded by the opening; wherein, In the direction of the opening normal, the ratio of the length of the interlayer segment to the length of the first opening segment is between 0.3 and 1.

6. The stacking peeling container as claimed in claim 1, wherein the second close-fitting area includes a second opening segment that is exposed on the inner surface of the opening and extends from the opening toward the body portion.

7. The stacking peeling container as claimed in claim 6, wherein the first bonding region includes a sandwich section, the second bonding region further includes an inner bonding section, the sandwich section and at least a portion of the inner bonding section are bonded to each other, and the sandwich section is not exposed on the inner surface of the opening, the second opening section is connected to the inner bonding section.

8. The stacking peeling container as claimed in claim 1, wherein an inner diameter of the inner surface of the opening decreases in the direction from the opening toward the body portion.

9. A delamination container having a main body and an opening, the opening being closer to the main body than the main body, an inner surface of the main body and an inner surface of the opening forming a receiving space for the delamination container, the delamination container comprising: a first layer including a first contact area; and a second layer, the first layer being closer to the main body than the second layer and exposed on the inner surface of the main body, the second layer including a second contact area, the first contact area and the second contact area being in contact with each other; wherein... Both the first and second bonding areas are located at the opening of the lamination peeling container and form an inward fold structure.

10. The stacking peeling container as claimed in claim 9, wherein the first bonding region includes a sandwich section, the second bonding region includes an inner bonding section and an outer bonding section, an inner side surface of the sandwich section is bonded to at least a portion of the inner bonding section, an outer side surface of the sandwich section is bonded to at least a portion of the outer bonding section, and the sandwich section is not exposed on the inner surface of the opening.

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