Tube container with wound sheet

Abstract

To provide a tube container with a wound sheet which has the wound sheet.SOLUTION: A tube container 100 with a wound sheet of the invention has a laminate tube container body 50 and a wound sheet 10. The wound sheet 10 is joined to a body part 20 of the tube container body 50 in a winding manner. The tube container body 50 has, at the body part, a side seam part where ends of a wound laminate sheet 20x are overlapped and welded. A winding start part 10a and a winding end part 10b of the wound sheet 10 wound around the body part 20 of the tube container body 50 are overlapped to form an overlapping part of the wound sheet 10. Further, at least a part of the overlapping part of the wound sheet 10 is disposed on the side seam part of the tube container body 50.SELECTED DRAWING: Figure 2

Description

[TECHNICAL FIELD]

[0001] The present invention relates to a tube container with a wound sheet, and particularly to a tube container with a wound sheet having a laminated tube container body and a wound sheet wound around the container body. [BACKGROUND ART]

[0002] Tube containers have been conventionally used as containers for many items including pharmaceuticals, toothpaste, food, cosmetics, adhesives and the like. A tube container is generally a tube body formed of a synthetic resin tube that is blow-molded or extrusion-molded into a cylindrical shape, or a tube body formed by winding a laminated sheet into a cylindrical shape. It is often used in such a manner that a head portion, in which a mouth cylinder is erected from an upper end opening of a cap-shaped shoulder portion, is heat-welded and fixed to the upper end of the cylindrical body, and after the content is filled, the lower end opening of the body is heat-sealed.

[0003] Further, with respect to such tube containers, tube containers with a wound sheet have been developed in which a sheet serving as a medium for information such as patterns and characters and / or a decoration for aesthetic appearance is wound around the body thereof.

[0004] For example, Patent Document 1 discloses a method of labeling a decorative film on the surface by utilizing residual heat while extrusion-molding a base tube container body.

[0005] Further, Patent Document 2 discloses a tube container in which a thermosensitive label decorated with a printing layer is adhesively fixed in a wound shape by heat fusion within a predetermined height range of the outer peripheral surface of the body of a pre-formed tube container body.

[0006] Furthermore, Patent Document 3 discloses a decorated polyethylene tube container characterized in that a decorative (decoration) film is wound around the body of a polyethylene tube container body via an adhesive layer adjacent to a decorative layer, with the winding start portion and winding end portion overlapping each other. [PRIOR ART DOCUMENTS] [Patent Documents]

[0007] [Patent Document 1] Special Publication No. 2019-531928 [Patent Document 2] Japanese Patent Publication No. 2010-105692 [Patent Document 3] Japanese Patent Application Publication No. 07-040515 [Overview of the project] [Problems that the invention aims to solve]

[0008] The present invention provides a tube container with a wound sheet that enhances aesthetic appeal.

[0009] Furthermore, it is believed that the tube containers with wound sheets disclosed in the aforementioned Patent Documents 1 to 3 are all designed to prevent the decorative sheet (film or label) from peeling off or falling off the tube container body.

[0010] In contrast, the inventors have found that in the following circumstances, it is preferable to peel off part or all of the layers of the winding sheet from the tube container body as necessary: ​​for example, when points or marks for product campaigns or sweepstakes are printed on the winding sheet and it is necessary to cut off the points or marks in order to enter the campaign or sweepstakes; when the tube container is softened to dispense all of the contents inside the tube; or when the sheet and the tube container body are to be separated for disposal or recycling.

[0011] Therefore, there is a need for tube containers with a winding sheet that allows some or all of the winding sheet layers to be easily peeled off from the tube container body.

[0012] Regarding the method of peeling off part or all of the layers of the winding sheet from the tube container body, the present invention provides a tube container with a winding sheet that can suppress unintended peeling of the winding sheet during use before peeling and / or facilitate the initiation of peeling when peeling the winding sheet.

[0013] While shrink labels used on PET bottles can be easily peeled off, applying such shrink labels to tube containers can cause problems with usability because the labels tend to lift when the body of the tube is squeezed to push out the contents. [Means for solving the problem]

[0014] The inventors, after diligent research, discovered that the above problems could be solved by the following means, and thus completed the present invention. That is, the present invention is as follows.

[0015] <Aspect 1> It has a laminated tube container body and a wound sheet, The aforementioned wound sheet is joined in a wound manner to the body of the tube container body, The tube container body has a side seam portion on its body where the ends of the wound laminate sheet are overlapped and welded together. The winding sheet has overlapping portions at the winding start and end points on the body of the tube container, forming an overlapping portion of the winding sheet, and At least a portion of the overlapping portion of the winding sheet is placed on the side seam portion of the tube container body. Tube container with a wound sheet. <Aspect 2> The tube container with a wound sheet according to Embodiment 1, wherein 30% or more of the overlapping portion of the wound sheet is arranged on the side seam portion of the laminated tube body. <Aspect 3> The tube container with a wound sheet according to aspect 1, wherein a winding end of the winding end portion of the wound sheet is disposed on the side seam portion of the laminate tube body. <Aspect 4> The tube container with a wound sheet according to any one of aspects 1 to 3, wherein a winding direction of the wound sheet is the same as a winding direction of the laminate sheet. <Aspect 5> The tube container with a wound sheet according to any one of aspects 1 to 3, wherein a winding direction of the wound sheet is opposite to a winding direction of the laminate sheet. <Aspect 6> The tube container with a wound sheet according to any one of aspects 1 to 5, wherein the wound sheet has an easily peelable sealant layer. <Aspect 7> The wound sheet has a base material layer and a surface layer, and the base material layer is bonded to the surface layer on a surface opposite to the tube container main body via the easily peelable sealant layer, whereby the surface layer can be peeled from the tube container main body and the base material layer,[_ The tube container with a wound sheet according to aspect 6. <Aspect 8> The wound sheet has a base material layer, and the base material layer is bonded to a body portion of the tube container main body via the easily peelable sealant layer, whereby the base material layer can be peeled from the tube container main body,[_ The tube container with a wound sheet according to aspect 6. <Aspect 9> The tube container with a wound sheet according to any one of aspects 6 to 8, wherein the wound sheet has a peeling trigger. <Aspect 10> The tube container with a wound sheet according to any one of aspects 6 to 9, wherein the wound sheet is provided with spiral perforations centered on the tube container. <Aspect 11> The tube container with a wound sheet according to any one of aspects 6 to 10, wherein the wound sheet has an indication that the wound sheet is peelable.

Effects of the Invention

[0016] According to the tube container with a wound sheet of the present invention, since at least a part of the overlapping portion of the wound sheet is disposed on the side seam portion of the tube container body, the proportion of a portion that is not affected by the overlapping portion of the wound sheet and the side seam portion of the tube body can be increased, thereby providing improved aesthetic appearance. Further, in an embodiment in which part or all of the layers of the wound sheet are peeled from the tube container body, according to the tube container with a wound sheet of the present invention, unintended peeling of the wound sheet during use before peeling the wound sheet can be suppressed, and / or the start of peeling can be facilitated when peeling the wound sheet.

Brief Description of Drawings

[0017] [Figure 1] FIG. 1 is a front view showing one embodiment of the tube container with a wound sheet of the present invention. [Figure 2] FIG. 2 is a cross-sectional view showing one embodiment of a tube container not according to the present invention (FIG. 2(a)), and cross-sectional views showing two embodiments of the tube container of the present invention (FIGS. 2(b) and (c)). [Figure 3] FIG. 3 is a schematic cross-sectional view of the body portion of the tube container body and the heat-sealed wound sheet in two embodiments of the tube container with a wound sheet of the present invention. [Figure 4] FIG. 4 is a schematic view showing embodiments of peeling initiation triggers in each of the tube containers with a wound sheet of Reference Examples 1 to 6.

Mode for Carrying Out the Invention

[0018] <<Tube Container with Wound Sheet>> The tube container with a wound sheet of the present invention, comprises a laminated tube container body and a wound sheet, The wound sheet is joined in a wound manner to the body of the tube container. The tube container body has a side seam on its body where the ends of the wound laminate sheet are overlapped and welded together. The starting and ending points of the winding sheet overlap on the body of the tube container, forming an overlapping portion of the winding sheet, and At least a portion of the overlapping portion of the winding sheet is positioned on the side seam of the tube container body. Tube container with wound sheet That is the case.

[0019] In this tube container with a winding sheet, 30% or more, 40% or more, 50% or more, 60% or more, 70% or more, 80% or more, 90% or more, 95% or more, or 100% of the overlapping portion of the winding sheet may be located on the side seam portion of the laminate tube body. This percentage may be 90% or less, 80% or less, 70% or less, 60% or less, 50% or less, or 40% or less. In addition, in this tube container with a winding sheet, the winding end of the winding sheet may be located on the side seam portion of the laminate tube body.

[0020] In other words, as shown in Figure 1, a front view illustrating one aspect of the tube container with a wound sheet of the present invention (hereinafter also simply referred to as "the tube container of the present invention"), the tube container 100 of the present invention has a laminated tube container body 50 and a wound sheet 10, and the wound sheet 10 is joined to the body portion 20 of the tube container body 50 in a wound manner.

[0021] Furthermore, as shown in Figures 2(b) and (c), which are cross-sectional views illustrating two embodiments of the tube container of the present invention, the tube container 100 of the present invention has the following configuration. Specifically, in the tube container 100 of the present invention, the tube container body 50 has a side seam portion on the body portion 20 formed by overlapping and welding the ends 20a and 20b of the wound laminate sheet 20x. The winding start portion 10a and winding end portion 10b of the wound sheet 10 overlap, forming an overlap portion of the wound sheet 10. The overlap portion of the wound sheet 10 is positioned on the side seam portion of the tube container body 50. In this embodiment, the winding end end 10c of the winding end portion 10b of the wound sheet 10 is also positioned on the side seam portion of the tube container body 50.

[0022] In the embodiment shown in Figure 2(b), the winding direction of the winding sheet 10 is the same as the winding direction of the laminate sheet 20x. In the embodiment shown in Figure 2(c), the winding direction of the winding sheet is opposite to the winding direction of the laminate sheet.

[0023] According to this, because at least a portion of the overlapping portion of the winding sheet 10, and furthermore the winding end 10c of the winding end portion 10b, are positioned on the side seam portion of the tube container body 50, the proportion of the portion unaffected by the overlapping portion of the winding sheet, the winding end of the winding sheet, and the side seam portion of the laminated tube body can be increased compared to a case without such a configuration, that is, compared to a case where the overlapping portion and the side seam portion do not overlap, as shown in Figure 2(a). The overlapping portion of the winding sheet, the winding end of the winding sheet, and the side seam portion of the laminated tube body may have their appearance disrupted by sealing processes such as heat sealing, laminated structures, etc., so having a large proportion of the portion unaffected by these sealing processes is preferable in terms of the appearance of the tube container with a winding sheet.

[0024] In relation to the present invention, the "end" of the laminate sheet refers to the portion that is overlapped and welded together, thereby forming a side seam. The "winding start portion" and "winding end portion" of the winding sheet refer to the portion that overlaps with each other, forming an overlapping portion. Specifically, the "winding start portion" refers to the portion where winding onto the body of the tube container begins, and the "winding end portion" refers to the portion where winding onto the body of the tube container ends. Furthermore, the "winding end end" of the winding end portion of the winding sheet refers to the end of the winding end portion.

[0025] Furthermore, in a manner in which a portion or all of the layers of the winding sheet are peeled off from the tube container body, the tube container with a winding sheet of the present invention suppresses unintended peeling of the winding sheet during use before peeling, and / or facilitates the initiation of peeling when peeling off the winding sheet.

[0026] In other words, according to the tube container with a wound sheet of the present invention, when using the tube container before peeling off the wound sheet, at least a portion of the overlapping part of the wound sheet, and furthermore, the end of the winding, are positioned on the side seam portion of the tube container body, that is, on a portion of the tube container body that has a relatively large thickness and rigidity. This suppresses unintended deformation of the overlapping part of the wound sheet and furthermore, the end of the winding, thereby suppressing unintended peeling during use.

[0027] Furthermore, with the tube container with a wound sheet of the present invention, when peeling off the wound sheet after use, at least a portion of the overlapping part of the wound sheet, and furthermore the end of the winding, are positioned on the side seam portion of the tube container body, that is, the portion of the tube container body that has a relatively large thickness and rigidity. As a result, when attempting to start peeling off the wound sheet by hooking it with a fingernail or the like after use, unintended deformation of the overlapping part of the wound sheet and furthermore the end of the winding is suppressed, thereby making it easier to start peeling off the wound sheet after use.

[0028] Furthermore, in the present invention, the state in which the wound sheet is joined to the body of the tube container in a wound manner refers to a state in which the sheet is joined in a wound manner, regardless of the method by which the wound sheet is wrapped around the body of the tube container. Therefore, the joined portion may be a full-surface joint or a striped joint.

[0029] In the present invention, the wound sheet may or may not have an easily peelable sealant layer.

[0030] If the wound sheet does not have an easily peelable sealant layer, the wound sheet may be directly joined to the body by heat sealing or the like, or it may be joined to the body via an adhesive layer made of an adhesive, an adhesive layer made of an adhesive, or a heat-seal layer made of a thermoplastic resin. Here, as the adhesive, for example, dry laminate adhesive, anchor coat adhesive, water-soluble adhesive, emulsion adhesive, non-solvent laminate adhesive, etc. can be used. As the heat-seal layer, polyolefin, in particular polyethylene resin, and polypropylene resin can be used.

[0031] In one embodiment, if the wound sheet has an easily peelable sealant layer, the wound sheet has a base layer and a surface layer, and the base layer is bonded to the surface layer via the easily peelable sealant layer on the side opposite to the tube container body, thereby allowing the surface layer to be peeled from the tube container body and the base layer.

[0032] In this case, specifically, as shown in Figure 3(a), a schematic cross-sectional view of the wound sheet and the tube container body, the wound sheet 10 is a laminate in which a surface layer 3, an easily peelable sealant 2a, and a base layer 1 are laminated in this order, and is joined to the body portion 20 of the tube container body in a wound manner. In this embodiment, the surface layer 3 and the base layer 1 are joined via the easily peelable sealant 2a. Therefore, when peeling the wound sheet from the tube container with the wound sheet, it separates between the surface layer 3 and the base layer 1, resulting in the surface layer 1 and the tube container body having the base layer 1.

[0033] Furthermore, if the wound sheet has an easily peelable sealant layer, the wound sheet may have a base layer, and the base layer may be joined to the body of the tube container via the easily peelable sealant layer, thereby allowing the base layer to be peeled off from the tube container body.

[0034] In this case, specifically, as shown in Figure 3(b), a schematic cross-sectional view of the wound sheet, the wound sheet 10 is a laminate in which a surface layer 3, a base layer 1, and an easily peelable sealant 2a are laminated in this order and is joined to the body 20 of the tube container in a wound manner. In this embodiment, the base layer 1 and the body 20 of the tube container are joined via the easily peelable sealant 2b. Therefore, when peeling the wound sheet from the tube container with the wound sheet, it separates between the base layer 1 and the body 20 of the tube container, separating into a laminate having the surface layer 3 and the base layer 1, and the tube container body.

[0035] Thus, in the tube container 100 with a wound sheet of the present invention, since the wound sheet 10 is joined to the body portion 20 of the tube container in a wound manner, the wound sheet 10 does not float up even when the body portion 20 is squeezed, meaning that it is easy to use. Furthermore, when peeling off the wound sheet 10, the entire or partial wound sheet 10 can be easily peeled off from the tube container by cohesive breakdown of the easily peelable sealant layers 2a and 2b.

[0036] The tube container with a wound sheet of the present invention provides the tube container body with the effects of the surface layer and / or base layer, as the wound sheet having a surface layer and / or base layer is joined to the tube container body in a wound manner.

[0037] Specifically, for example, the surface layer and / or base layer, particularly the surface layer, can be used as a medium for information such as patterns and characters and / or as decoration for aesthetic purposes.

[0038] Furthermore, the tube container of the present invention can have one or more of the following advantages (1) to (9) by using a wound sheet and / or by having an easily peelable sealant layer on the wound sheet.

[0039] (1) Strengthening barrier properties In the tube container of the present invention, if the wound sheet has barrier properties, the overall barrier properties of the tube container can be improved.

[0040] (2) Use of various decorative layers In the tube container of the present invention, at least one of the layers constituting the wound sheet, particularly the surface layer, has a decorative layer, making it possible to use decorative layers that were difficult to use in conventional laminate tubes, such as embossed PET film or PET film with a hologram vapor deposition film.

[0041] (3) Improved production efficiency / Small lot production Conventional blow-molded tubes and laminated tubes have a printed layer provided by direct printing. Therefore, if the design needs to be changed, for example, the printing plate must be changed each time. In contrast, with the tube container of the present invention, by using a wound sheet, the design can be changed simply by switching the printed wound sheet.

[0042] Furthermore, regarding printing, the tube container of the present invention does not form side seams with a laminated structure like conventional laminate tubes. Therefore, printing methods that would be functionally insufficient (in this case, insufficient laminate strength or ink adhesion) when considering conventional side seams, such as digital printing, can be used.

[0043] Therefore, with the tube container of the present invention, digital printing not only enables handling of small-lot, high-mix production and short delivery times, but also leads to a reduction in printed defects.

[0044] (4) Thinning of the tube container body and reduction of resin usage In the tube container of the present invention, by wrapping a highly rigid wound sheet around the body of the tube container, the tube container can be made self-supporting even if the tube container body is made thin.

[0045] Furthermore, in the tube container of the present invention, the amount of resin used to form the tube container body can be reduced by making the tube container body thinner.

[0046] (5) Improvement of the ability to separate and dispose of tube containers Conventionally, tube containers with a winding sheet, where the winding sheet and the tube container body cannot be separated, were generally treated as combustible waste. In contrast, when an easily peelable sealant layer is used in the winding sheet, the tube container of the present invention allows for the separation and disposal of the winding sheet and the tube container body. This separate disposal also reduces the amount of combustible waste to be generated.

[0047] (6) Easy disposal When an easily peelable sealant layer is used in a wound sheet, the tube container of the present invention allows for compact disposal of the tube container by thinning the tube container body.

[0048] (7) Contributes to complete use (squeezable) When an easily peelable sealant layer is used in the wound sheet, the tube container of the present invention makes it easier to squeeze out the contents from the relatively softened tube container body after peeling off the wound sheet (making it possible to create a thin, easy-to-squeeze-out state at the end).

[0049] (8) Provision of supplementary information such as advertisements and product descriptions When an easily peelable sealant layer is used in a wound sheet, the tube container of the present invention allows for the provision of additional information such as advertisements and instructions in this portion by making the overlapping portion of the wound sheet longer (larger).

[0050] (9) Product campaign information and "lottery" entries on the reel sheet. When an easily peelable sealant layer is used in the wound sheet, the tube container of the present invention makes it easier to peel off the wound sheet and apply by including product campaign information or lottery information on the wound sheet.

[0051] The following describes each component of the tube container with a wound sheet according to the present invention.

[0052] <Wrap-around sheet> The winding sheet according to the present invention refers to any sheet that can be wound around a tube container body for the above purposes such as decoration and barrier properties, and has at least a base layer, and optionally further has a surface layer, an inner layer, and an easily peelable sealant layer. Furthermore, each layer of the winding sheet according to the present invention may be joined to each other directly by heat sealing, or via a bonding layer such as an adhesive layer, bonding layer, or heat sealing layer.

[0053] (Base layer, surface layer, and inner layer) In the present invention, "base layer" refers to the layer among the layers constituting the wound sheet that provides the necessary strength to the wound sheet. Furthermore, in the present invention, "surface layer" refers to the layer or laminate among the layers constituting the wound sheet that is outside the base layer (excluding bonding layers such as easily peelable sealant layers, adhesive layers, bonding layers, and heat seal layers adjacent to the base layer). Furthermore, in the present invention, "inner layer" refers to the layer or laminate among the layers constituting the wound sheet that is inside the base layer (excluding bonding layers such as easily peelable sealant layers, adhesive layers, bonding layers, and heat seal layers adjacent to the base layer).

[0054] The "base layer," "surface layer," and "inner layer" may be layers that provide the winding sheet of the present invention with appropriate handling properties, strength, durability, etc., and function as a support when printing is performed. Therefore, the base layer, surface layer, and inner layer may be single layers, or they may be laminates in which multiple layers are integrated.

[0055] The materials constituting the base layer, surface layer, and inner layer are not particularly limited, but can be selected from materials that have sufficient flexibility to follow the squeeze deformation of the tube container without any discomfort. Furthermore, the material constituting the surface layer may be selected from materials that can withstand the heat during heat sealing, for example, in order to join the wound sheets with an easily peelable sealant layer by heat sealing.

[0056] In the present invention, the thickness of the base layer, surface layer, and inner layer is not particularly limited. For example, from the viewpoint of providing durability to the wound sheet, it may be 1 μm or more, 5 μm or more, 10 μm or more, or 20 μm or more. From the viewpoint of providing flexibility to the sheet, it may be 100 μm or less, 50 μm or less, 40 μm or less, or 30 μm or less. The total thickness of the wound sheet may be 50 μm or more, 100 μm or more, 150 μm or more, 200 μm or more, or 250 μm or more. It may also be 1,000 μm or less, 900 μm or less, 800 μm or less, 700 μm or less, 600 μm or less, 500 μm or less, 400 μm or less, or 350 μm or less.

[0057] In the present invention, the base layer, surface layer, and inner layer may have one or more film layers or paper layers.

[0058] More specifically, examples of films used in the base layer, surface layer, and inner layer include polyethylene film, polypropylene film, polyester film, particularly polypropylene film such as biaxially oriented polypropylene film, or polyester film such as biaxially oriented polyethylene terephthalate film.

[0059] The base layer, surface layer, and inner layer may further include layers other than the film layer or paper layer for the purpose of providing additional functionality. Examples of such layers include, but are not limited to, a heat insulating layer such as a foamed polymer layer or a fiber layer, and an adhesive layer such as a urethane-based adhesive.

[0060] The surface layer may have printed text information, symbols, marks, etc., on the surface of one or more layers constituting the surface layer. The surface layer may also have a decorative layer that can be observed from the outside of the tube container when the winding sheet of the present invention is wound around the tube container body, thereby decorating the appearance of the tube container, particularly a decorative layer that decorates (adorns) the appearance such as patterns, colors, and gloss. In relation to the present invention, a layer on which only text information, symbols, marks, etc., are printed, and which does not decorate the appearance such as patterns, colors, and gloss, does not fall under the category of a "decorative layer".

[0061] The decorative layer may be any of the following or a combination thereof: • Printed film layer or paper layer • Coated film layer or paper layer • Decorative film layer or paper layer (e.g., matte film layer, polarizing film layer, embossed film layer, colored film layer or paper layer)

[0062] (Easily peelable sealant layer) In the present invention, the "easily peelable sealant layer" refers to a layer that allows a portion or all of the layers constituting the wound sheet to be easily peeled off by human manual labor from the state in which the wound sheet is heat-sealed to the body of the tube container. In the present invention, the peel strength when peeling off the wound sheet may be, for example, 12 N / 15 mm or less, 8.0 N / 15 mm or less, or 5.0 N / 15 mm or less, and may also be 0.10 N / 15 mm or more, 0.20 N / 15 mm or more, 0.30 N / 15 mm or more, 0.50 N / 15 mm or more, or 1.0 N / 15 mm or more. Note that "peel strength" refers to the peel strength when peeled 180° according to the method specified in, for example, JIS-Z-0238.

[0063] In the present invention, the thickness of the easily peelable sealant layer is not particularly limited and can be selected considering usability when using a tube container (squeeze durability), ease of peeling when peeling off part or all of the layers constituting the wound sheet, etc. For example, the thickness of the easily peelable sealant layer may be 1 μm or more, 5 μm or more, 10 μm or more, or 20 μm or more, and may also be 100 μm or less, 50 μm or less, 40 μm or less, or 30 μm or less.

[0064] In the present invention, the easily peelable sealant layer may be a single layer or a laminate of multiple layers (for example, two or more layers, three or more layers, or four or more layers, and six or fewer layers, or five or fewer layers).

[0065] Furthermore, in the present invention, the easily peelable sealant layer may be an easily peelable sealant layer of the type that causes intralayer cohesive failure, or an easily peelable sealant layer of the type that causes interfacial peeling.

[0066] In the present invention, "inter-layer cohesive failure type easily peelable sealant layer" refers to an easily peelable sealant layer in which, when the wound sheet is peeled from the body of the tube container, the interior of the single-layer easily peelable sealant layer ruptures, or the interior of one of the multiple layers constituting the easily peelable sealant layer, which is a laminate of multiple layers, ruptures, and a portion of the ruptured easily peelable sealant layer remains on the tube container body side, while the other portion of the ruptured easily peelable sealant layer remains on the wound sheet side.

[0067] In the present invention, when the easily peelable sealant layer is of the type that causes intralayer cohesive failure, the body of the tube container after the winding sheet has been removed becomes slippery to the human finger, making it easier to squeeze out the contents remaining inside the tube container by squeezing the tube container after the winding sheet has been removed. Here, it is thought that this improved slipperiness is due to the reduction of friction and snagging when squeezing the tube container with a finger, caused by the fractured easily peelable sealant layer remaining on the surface of the tube container.

[0068] Furthermore, in the present invention, "interfacial peeling type easy-peel sealant layer" refers to a layer that peels off when the wound sheet is peeled off from the body of the tube container, at the interface between the easy-peel sealant layer and an adjacent layer, at the interface between the easy-peel sealant layer and the tube container body, or at the interfaces between multiple layers that constitute the easy-peel sealant layer, which is a laminate of multiple layers. Therefore, in the "interfacial peeling type easy-peel sealant layer," when the wound sheet is peeled off from the tube container body, the easy-peel sealant layer may remain on the tube container side, the easy-peel sealant layer may remain on the wound sheet side, or a portion of the easy-peel sealant layer may remain on the tube container side and the remainder of the easy-peel sealant layer may remain on the wound sheet side.

[0069] In the present invention, if the easily peelable sealant layer is an interfacial peelable type, the transparency of the body of the tube container after peeling can be maintained, and therefore it is preferable to use it in combination with a transparent blow-molded tube container. In particular, even if the easily peelable sealant layer remains on the tube container body side, the transparency of the body of the tube container after peeling can be maintained because the surface of the easily peelable sealant layer is smooth.

[0070] In the present invention, the material constituting the easily peelable sealant layer is not particularly limited, but may be appropriately determined based on types such as "intralayer cohesive failure type easily peelable sealant layer" or "interfacial peeling type easily peelable sealant layer".

[0071] More specifically, the material constituting the easily peelable sealant layer with intralayer cohesive failure may be selected from, for example, polyolefin resins.

[0072] More specifically, polyolefin resins include, but are not limited to, ethylene-based resins such as low-density polyethylene resin (LDPE), medium-density polyethylene resin (MDPE), linear low-density polyethylene resin (LLDPE), ethylene-vinyl acetate copolymer resin (EVA), and ethylene-α-olefin copolymer; polypropylene-based resins such as homopolypropylene resin, propylene-ethylene random copolymer, propylene-ethylene block copolymer, and propylene-α-olefin copolymer; and polybutene. These can also be used individually or as blended materials with these as the main raw materials. It is preferable to use a material from these materials that can be heat-sealed to the tube container body.

[0073] Furthermore, the material constituting the interfacial peelable sealant layer may be selected from a mixture of polyolefin resin and cyclic olefin copolymer in any ratio. The ratio of cyclic olefin copolymer to the total of polyolefin resin and cyclic olefin copolymer may be, for example, 1.0 to 50% by mass, particularly 1.0 to 20% by mass, 1.0 to 10% by mass, or 3.0 to 10% by mass.

[0074] Here, a cyclic olefin copolymer refers to a polymer in which a cyclic olefin is used as a monomer, and which has a saturated hydrocarbon ring structure in the main chain or side chain of the polymer. Preferably, the cyclic olefin copolymer is a copolymer in which at least one cyclic olefin and at least one vinyl compound other than a cyclic olefin are used as monomers. The cyclic olefin copolymer may be a cyclic olefin-based random copolymer (COC) obtained by addition polymerization using at least one cyclic olefin and at least one vinyl compound other than a cyclic olefin as monomers, or it may be a cyclic olefin ring-opening polymer or its hydrogenated product (COP) obtained by ring-opening polymerization using at least one compound having a double bond in the fused ring skeleton and at least one unsaturated compound other than said compound as monomers.

[0075] When a cyclic olefin copolymer is a cyclic olefin random copolymer (COC) obtained by addition polymerization, the cyclic olefin used as the monomer is not particularly limited, but examples include monocyclic cycloolefins such as cyclobutene, 3-methylcyclobutene, 3,4-diisopropenylcyclobutene, cyclopentene, 1-methylcyclopentene, 3-methylcyclopentene, cyclohexene, cyclooctene, 1-methylcyclooctene, 5-methylcyclooctene, cyclooctatetraene, and cyclododecene, as well as polycyclic cycloolefins such as tetracyclododecene and norbornene, and their derivatives.

[0076] Furthermore, vinyl compounds other than cyclic olefins that can serve as comonomers for cyclic olefin random copolymers (COCs) are not particularly limited, but examples include α-olefins such as ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-pentene, 4-methyl-1-pentene, 3-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, and 1-decene; monocyclic dienes such as cyclopentadiene, 1,3-cyclohexadiene, and 1,4-cyclohexadiene; polycyclic dienes having a norbornene ring with two unsaturated bonds; and linear or branched dienes such as butadiene and isoprene.

[0077] When a cyclic olefin-based random copolymer (COC) is used as the material for the interfacial peelable sealant layer, the proportion of structural units derived from the cyclic olefin is preferably 15 to 60 mol%, and more preferably in the range of 25 to 50 mol%.

[0078] Furthermore, when the cyclic olefin copolymer is a cyclic olefin ring-opening polymer obtained by ring-opening polymerization or a hydrogenated product thereof (COP), the compound having a double bond in the fused ring skeleton that becomes the monomer is not particularly limited as long as it can be polymerized by a metasense polymerization catalyst. Examples include compounds having a norbornene-based skeleton such as tetracyclododecene, norbornene, or derivatives thereof.

[0079] Furthermore, the unsaturated compounds other than those having a double bond in the fused ring skeleton that serve as comonomers for cyclic olefin ring-opening polymers are not particularly limited as long as they can be polymerized by a metasense polymerization catalyst. Examples include cyclic olefins that serve as monomers for the above-mentioned cyclic olefin-based random copolymers (COCs), cyclic dienes, monomers having a carbon-carbon double bond in the main chain, and derivatives thereof.

[0080] Furthermore, cyclic olefin ring-opening polymers have a carbon-carbon double bond (C=C) in their main chain. When hydrogenation is performed, a hydrogenated product (COP) can be obtained in which the double bond in the main chain is replaced by a carbon-carbon single bond (CC). From the viewpoint of heat resistance, weather resistance, etc., a polymer in which at least the carbon-carbon double bond in the main chain is hydrogenated may also be used.

[0081] When using a cyclic olefin ring-opening polymer or its hydrogenated product (COP), it is preferable that the proportion of structural units derived from a compound having a double bond in the fused ring skeleton is 80% by mass or more, considering that it will be subjected to a hydrogenation reaction.

[0082] (Manufacturing method for wound sheets) In the wound sheet according to the present invention, the method for forming the laminate, in which a base layer and any other layer are laminated, is not particularly limited, and for example, a dry lamination method, a sand lamination method, or a co-extrusion film molding method may be used. In addition, commercially available sheet molded products may be used as each layer or as the laminate.

[0083] (Trigger for peeling) In the present invention, if the wound sheet further has an easily peelable sealant layer, from the viewpoint of improving the ease of peeling the wound sheet, the wound sheet may have a peeling trigger, or it may have spiral perforations with the tube container body as the axis, or it may have both.

[0084] The winding sheet can be more easily peeled off the tube container body by having a peeling trigger. In particular, it is preferable that the winding sheet has a peeling trigger when the tube container body contains a metal material on its surface.

[0085] In the present invention, the peeling trigger is not particularly limited and may be, for example, the following: (i) When heat-sealing a wound sheet to the body of a tube container, a region of the easily peelable sealant layer of the wound sheet that is not heat-sealed or a region that is heat-sealed less strongly than other regions can be used as the peeling trigger; (ii) A welding-inhibiting layer such as a peeling varnish can be provided on a part of the easily peelable sealant layer of the wound sheet and this can be used as the peeling trigger.

[0086] Furthermore, from the viewpoint of improving the ease of peeling off the wound sheet, it is preferable that at least a portion of the peeling triggers are located at the joints of the wound sheet. Here, the joints of the wound sheet refer to the opposing or overlapping portions of both ends of the sheet in the winding direction when the wound sheet is heat-sealed to the body of the tube container in a wound manner. That is, the ends of this wound sheet may be (i) arranged with a certain distance between them, (ii) tightly connected, or (iii) overlapped. For example, if there is an easily peelable sealant layer that undergoes cohesive failure within the layer when the easily peelable sealant layer is peeled off, the joint may be of any of the above types (i) to (iii). Also, if there is an easily peelable sealant layer that undergoes interfacial peeling when the easily peelable sealant layer is peeled off, it is preferable that the joint is of the above type (i) or (ii).

[0087] (display) In the present invention, if the wound sheet further comprises an easily peelable sealant layer, the wound sheet may have an indication that it is peelable. More specifically, the wound sheet may have an indication that it is peelable, a method of peeling, that it can be peeled and disposed of separately, or that it can be peeled and a specific part can be used for applications, etc. Such indications can provide convenience to users, etc.

[0088] Furthermore, the winding sheet may have an indication that it can be peeled off the tube container body by pressing the winding start area near the overlapping portion.

[0089] Such displays can be made by printing on one or more layers that make up the surface, and the form of the display may be a display using only text, a display using only symbols, marks, etc., or a display using a combination thereof.

[0090] <Tube container body> In the present invention, the tube container is used as a container for filling contents such as pharmaceuticals, toothpaste, food, cosmetics, or adhesives. In particular, in the present invention, the tube container is used as a container for filling contents such as food, pharmaceuticals, toothpaste, cosmetics, or adhesives that are sensitive to oxygen or moisture, thereby enabling the contents to be kept relatively unaffected by oxygen or moisture for a relatively long period of time. Examples of foods sensitive to oxygen or moisture include condiments such as wasabi.

[0091] The tube container body has a body portion and a spout portion. Depending on the design and practicality, it may also have a shoulder portion between the body portion and the spout portion. For example, as shown in Figure 1, the tube container body 50 has a body portion 20, a shoulder portion 30, and a spout portion 40.

[0092] In the present invention, the tube container body is a laminated tube, and the tube container body has a side seam portion on its body formed by overlapping and welding the ends of the wound laminate sheet. Furthermore, the laminate sheet for forming the tube container body may include a layer made of a resin material and a layer made of a metal material.

[0093] Method for manufacturing tube containers with wound sheets The method for manufacturing the tube container with a wound sheet according to the present invention is not particularly limited.

[0094] Therefore, for example, the tube container with a wound sheet of the present invention can be manufactured by preparing the tube container body and the wound sheet, and then using a rotary heat roll to heat-seal the innermost layer of the wound sheet, which is the heat seal layer, to the body of the tube container body by heat-pressing it with the heat seal layer facing the body of the tube container body, thereby heat-sealing the wound sheet to the body of the tube container body in a wound manner.

[0095] The temperature during heat bonding is not particularly limited and may be, for example, 100 to 300°C. Similarly, the force applied during heat bonding is not particularly limited and may be, for example, 5 to 20 kgf.

[0096] If the innermost layer is not a heat-seal layer, bonding can be performed using an adhesive layer made of a tack or an adhesive layer made of a bonding agent. [Examples]

[0097] The present invention will be described below using the examples and reference examples of tubes with wound sheets, but the present invention is not limited to these.

[0098] Examples and Comparative Examples <Creating Laminated Tubes> As laminate sheets for the laminate tubes of the examples and reference examples, a laminate having the following layer structure was prepared. (Outside) HDPE layer (120μm) / PE layer (20μm) / EVOH layer (75μm) / PE layer (25μm) / MDPE layer (60μm) (Contents side) … Total thickness 300μm

[0099] The edges of the above laminate sheets were overlapped and heat-sealed to form a laminate tube with side seams on the body.

[0100] <Creating a winding sheet> For the examples and reference materials, a laminate having the following layer structure was prepared as a winding sheet (where " / / " indicates bonding with a dry laminating adhesive). (Outer layer) Paper layer (65 μm) / / PET layer (12 μm) / Interfacial peel-type easy-peel sealant layer (50 μm) (Contents side) ... Total thickness 127 μm

[0101] The meanings of each symbol used above are as follows: HDPE (High-Density Polyethylene) PE (Polyethylene) EVOH (Ethylene vinyl alcohol) MDPE (Medium-density polyethylene) PET (Polyethylene Terephthalate)

[0102] Furthermore, the interfacial peel-type easily peelable sealant layer is specifically a layer made of a mixed resin of low-density polyethylene (LDPE) and cyclic olefin copolymer (COC) (LDPE:COC (mixing mass ratio) = 95:5), with petrocene 226 (manufactured by Tosoh Corporation) used as the LDPE and Apel 6013B (manufactured by Mitsui Chemicals, Inc.) (a cyclic olefin random copolymer produced by addition polymerization) used as the COC.

[0103] <Example 1> The above-mentioned winding sheet, which has the same dimensions as the body of the laminate tube, was pressed onto the body of the laminate tube with a force of 0.5 MPa using a rotary heat roll (200°C) to heat-seal it to the body of the laminate tube. In this embodiment 1, as shown in Figure 2(b), the winding direction of the winding sheet 10 was the same as the winding direction of the laminate sheet 20x, and the overlapping portion 10b and the winding end 10c of the winding sheet 10 were positioned on the side seam portion of the tube container body.

[0104] <Example 2> In the same manner as in Example 1, the winding sheet was heat-pressed to the body of the laminate tube. In this Example 2, as shown in Figure 2(c), the winding direction of the winding sheet 10 was opposite to the winding direction of the laminate sheet 20x, and the overlapping portion 10b and the winding end 10c of the winding sheet 10 were positioned on the side seam portion of the tube container body.

[0105] <Reference example A> In the same manner as in Example 1, the winding sheet was heat-pressed to the body of the laminate tube. In this Reference Example A, as shown in Figure 2(a), the overlapping portion 10b and the winding end 10c of the winding sheet 10 were not located on the side seam portion of the tube container body. That is, in this Reference Example A, as shown in Figure 2(a), the overlapping portion 10b and the winding end 10c of the winding sheet 10 were located on the flat portion of the tube container body.

[0106] "evaluation" <Aesthetics> The proportion of areas unaffected by overlapping portions of the winding sheet, the winding end of the winding sheet, and the side seams of the laminated tube body was evaluated. Note that the appearance of the winding sheet may be disrupted in the overlapping portions of the winding sheet, the winding end of the winding sheet, and the side seams of the laminated tube body due to heat sealing and other sealing processes, as well as the laminated structure. Therefore, a large proportion of areas unaffected by heat sealing and other processes is desirable for the appearance of the tube container with the winding sheet.

[0107] Aesthetic evaluation criteria A: Compared to the laminate tube container with a winding sheet in Reference Example A, the proportion of the portion unaffected by the overlapping portion of the winding sheet, the end of the winding of the winding sheet, and the side seam portion of the laminate tube body is larger. B: Compared to the laminate tube container with a winding sheet in Reference Example A, the proportion of the portion unaffected by the overlapping portion of the winding sheet, the winding end of the winding sheet, and the side seam portion of the laminate tube body is the same or smaller.

[0108] <Effect of suppressing unintended peeling during use> We evaluated the effectiveness of suppressing unintended peeling during use.

[0109] Evaluation criteria for the effect of suppressing unintended peeling A: Compared to the laminate tube container with a wrapped sheet shown in Reference Example A, this container offers superior effectiveness in suppressing unintended peeling during use. B: Compared to the laminate tube container with a wrapped sheet in Reference Example A, the effect of suppressing unintended peeling during use is equivalent to or less.

[0110] <Effect of promoting the start of peeling after use> The effect of promoting the initiation of peeling after use was evaluated.

[0111] Evaluation criteria for the effect of promoting the initiation of peeling A: Compared to the laminate tube container with a wrapped sheet shown in Reference Example A, this container has a superior effect in promoting the start of peeling after use. B: Compared to the laminate tube container with a wrapped sheet in Reference Example A, the effect of promoting the start of peeling after use is equivalent to or less.

[0112] <Evaluation of Usability> Orange juice was filled into the wound-sheet tube containers of the Examples and Reference Examples, the bottom end was sealed with an ultrasonic seal, and the containers were placed in a -20°C freezer for 24 hours to freeze the orange juice into a sherbet-like consistency. Subsequently, the wound-sheet tube containers of the Examples and Comparative Examples were squeezed to extract the contents, and their usability (squeeze-following ability) was evaluated according to the following criteria.

[0113] Evaluation Criteria for Usability A: No lifting or peeling of the winding sheet occurred. B: The winding sheet has lifted or peeled off.

[0114] <Evaluation of peelability of wound sheets> After squeezing out the contents as described in the evaluation method for usability assessment, the winding sheet was peeled off, and the peelability of the winding sheet was evaluated based on the following criteria.

[0115] Evaluation criteria for peelability A: It could be easily peeled off by hand. B: Peeling was difficult.

[0116] <Evaluation of the separability and disposability of tube containers with wound sheets> We evaluated whether the tube container body and the winding sheet of a tube container with a winding sheet can be separated and disposed of based on the following criteria.

[0117] Evaluation criteria for separation and disposal A: The entire wound sheet could be separated from the tube container body and disposed of. B: The tube container body and the winding sheet could not be separated for disposal.

[0118] <Evaluation Results> The results of the above evaluation are shown in Table 1 below.

[0119] [Table 1]

[0120] As is clear from Table 1, the tube containers with wound sheets in Examples 1 and 2 showed excellent results in all evaluation items, including aesthetics, suppression of unintended peeling, promotion of peeling initiation, usability, peelability, and separation and disposal, because the overlapping portion and the end of the winding of the winding sheet were located on the side seam portion of the tube container body. In contrast, the tube container with wound sheets in Reference Example A showed inferior results in terms of aesthetics, suppression of unintended peeling, and promotion of peeling initiation, because the overlapping portion and the end of the winding of the winding sheet were not located on the side seam portion of the tube container body but on the flat portion of the tube container body.

[0121] 《Reference examples 1~6》 The reference examples and reference comparative examples confirm the effect of joining a wound sheet to the body of a tube container in a wound manner via an easily peelable sealant layer.

[0122] As laminates for winding sheets in Reference Examples 1-6, laminates with the following layer configurations were prepared (note that " / / " indicates bonding by dry laminating adhesive): PETsiox (12 μm) / / inkPET (12 μm) / ac agent / EMAA (20 μm) / easily peelable sealant layer (easily peelable sealant layer with intralayer cohesive breakdown) (20 μm)

[0123] The easily peelable sealant layers in these reference examples 1-6, that is, the easily peelable sealant layers of the type that undergo cohesive failure within the layer when the wound sheet is peeled off, are polyethylene easy-peel sealant (7601EB manufactured by Toray Film Processing Co., Ltd.).

[0124] The layer structure of the tube container body (laminated tube) in Reference Examples 1-5 is as follows: (Front side) LLDPE(50μm) / LDPEf(100μm) / PET(12μm) / EMAA(30μm) / Al(9μm) / EMAA(30μm) / LLDPE(100μm)(Contents side)

[0125] The layer structure of the tube container body (blow tube) in Reference Example 6 is as follows: (Front side) LDPE (100 μm) / Acid-modified resin (10 μm) / EVOH (20 μm) / Acid-modified resin (10 μm) / LDPE (100 μm) (Contents side)

[0126] The details of the abbreviations for each layer structure described above are as follows: PETsiox: PET layer with deposited silicon oxide inkPET: PET layer with printed layer AC agent: Anchor coat adhesive LLDPE: Linear low-density polyethylene resin layer LDPEf: Low-density polyethylene resin film PET: Polyethylene terephthalate layer EMAA: Ethylene-methacrylate copolymer Al: Aluminum foil layer LDPE: Low-density polyethylene resin layer EVOH: Ethylene-vinyl alcohol copolymer layer

[0127] <Manufacturing method> In Reference Examples 1 to 6, a laminate for a winding sheet, approximately the same size as the body of the tube container described above, was used. The tube container was then pressed against a rotary heat roll (200°C) with a force of 10 kgf via an easily peelable sealant layer to heat-seal the tube container, thereby producing the winding sheet-attached tube containers of Reference Examples 1 to 6.

[0128] In Reference Examples 1-4 and 6, peeling triggers (unwelded areas) were provided in the wound sheet. The locations of each peeling trigger are shown in Figures 4(a) to (d). The configuration of Reference Example 5 is shown in Figure 4(e).

[0129] Reference Example 1 A PET shrink label was wrapped around the same blow-molded tube as the tube container in Reference Example 6 to produce the tube container with a wrapped sheet as in Reference Comparative Example 1.

[0130] "evaluation" The peelability and usability of the sheets were evaluated as described in the above examples and comparative examples.

[0131] The configuration and evaluation results of the wound sheet-attached tube containers for each reference example and reference comparison are shown in Table 2.

[0132] [Table 2]

[0133] As is clear from Table 2, all of the tube containers with wrapped sheets in Reference Examples 1 to 6 were found to have their wrapped sheets peeled off, and also exhibited good usability (squeeze-following ability). In particular, in Reference Examples 1 to 4 and 6, it was found that the wrapped sheets could be easily peeled off by using wrapped sheets that had a peeling trigger.

[0134] 《Reference example 7》 As a laminate for the wound sheet in Reference Example 7, a laminate with the following layer configuration was prepared (note that " / / " indicates bonding by dry laminating adhesive): Paper (80g / m 2 ) / / PET (12μm) / Interfacial peel-type easily peelable sealant layer (20μm) / PE layer (sealant layer) (30μm)

[0135] The easily peelable sealant layer in Reference Example 7 includes an interfacial peelable easily peelable sealant layer and a polyethylene layer (sealant layer). When this easily peelable sealant layer in Reference Example 7 is heat-welded to a blow tube and then peeled off, the "interfacial peelable easily peelable sealant layer / polyethylene layer (sealant layer)" remains on the body of the tube container, while the "paper / PET" is peeled off.

[0136] Furthermore, the interfacial peel-type easily peelable sealant layer is a layer made of a mixed resin of LDPE and COC (LDPE:COC (mixing mass ratio) = 95:5), with petrocene 226 (manufactured by Tosoh Corporation) used as the LDPE (low-density polyethylene) and Apel 6013B (manufactured by Mitsui Chemicals, Inc.) used as the COC (cyclic olefin random copolymer produced by addition polymerization).

[0137] The same tube container body (blow tube) used in Reference Example 7 was the same as that used in Reference Example 6.

[0138] A tube container with a wound sheet, as shown in Reference Example 7, was fabricated in the same manner as the tube container with a wound sheet, as shown in Reference Example 6.

[0139] Comparative evaluation of examples 6 and 7. As described above, in Reference Example 6, the easily peelable sealant layer is an easily peelable sealant layer of the type that causes intralayer cohesive failure, and in Reference Example 7, the easily peelable sealant layer is an easily peelable sealant layer of the type that causes interfacial peeling. Below, we compare the additional effects when the type of peeling is different using Reference Examples 6 and 7.

[0140] More specifically, the wrapped sheet was peeled off from each of the tube containers with wrapped sheets in Reference Examples 6 and 7 using a peeling trigger. Next, the "visibility of contents" and "ease of squeezing" of each tube container were evaluated.

[0141] <Visibility of contents> The visibility of the contents inside the body of the tube container after the winding sheet has been removed was evaluated by calculating the haze value based on JIS K 7361-1997. A smaller haze value indicates higher transparency, i.e., higher visibility of the contents inside the body of the tube container. The evaluation criteria were as follows. The results are shown in Table 3. A: Haze value is 80% or higher; B: Haze value is less than 70%.

[0142] <Ease of squeezing out> The ease of squeezing the contents (grated ginger) from the body of each tube container after removing the winding sheet was compared by manually squeezing the contents from each tube container according to the following criteria. The results are shown in Table 3. A: The material was smooth to the touch when squeezing, allowing the contents to be squeezed out easily. B: The grip on the hand when squeezing was slightly inferior to "A," and there was a feeling of resistance when squeezing out the contents.

[0143] [Table 3]

[0144] As is clear from Table 3, in terms of visibility of the contents, Reference Example 7, which uses an interfacial peeling type easily peelable resin, is superior to Reference Example 6, which uses an intralayer cohesive breaking type easily peelable resin. In other words, it was found that an additional effect is obtained in which the contents filled in the tube container can be squeezed out while being confirmed.

[0145] Furthermore, from the standpoint of ease of squeezing, Reference Example 6, which uses an easily peelable resin with intralayer cohesive breakdown, is superior to Reference Example 7, which uses an easily peelable resin with interfacial peeling, and it was found that an additional effect is obtained in that the contents filled in the tube container are easier to squeeze out. [Explanation of Symbols]

[0146] 1 Base material layer 2a, 2b Easy-peel sealant layer 3 Surface layer 10 rolls per sheet 10a Winding start portion of the winding sheet 10b End of winding of the winding sheet 10c End of winding of the wound sheet 20 Body of the tube container 20x Laminating Sheets 20a, 20b Edges of the laminate sheet 30 Shoulder portion of the tube container body 40. Dispensing spout of the tube container body 50 Tube container body 100-wrap tube container with sheet

Claims

1. It has a laminated tube container body and a wound sheet, The aforementioned wound sheet is joined in a wound manner to the body of the laminate tube container body. The laminate tube container body has a side seam portion on its body where the ends of the wound laminate sheet are overlapped and welded together. The starting and ending portions of the winding sheet overlap on the body of the laminate tube container, and the winding sheet overlaps at both ends, forming an overlapping portion. At least a portion of the overlapping portion of the winding sheet is placed on the side seam portion of the laminate tube container body. Tube container with a wound sheet.

2. The tube container with a wound sheet according to claim 1, wherein 30% or more of the overlapping portion of the wound sheet is arranged on the side seam portion of the laminated tube container body.

3. The tube container with a wound sheet according to claim 1, wherein the end of the winding of the winding end portion of the winding sheet is positioned on the side seam portion of the laminate tube container body.

4. The tube container with a wound sheet according to claim 1 or 2, wherein the winding direction of the wound sheet is the same as the winding direction of the laminate sheet.

5. The tube container with a wound sheet according to claim 1 or 2, wherein the winding direction of the wound sheet is opposite to the winding direction of the laminate sheet.

6. The tube container with a wound sheet according to claim 1 or 2, wherein the wound sheet has an easily peelable sealant layer.

7. The aforementioned wound sheet has a base layer and a surface layer, The base material layer is bonded to the surface layer via the easily peelable sealant layer on the side opposite to the laminate tube container body, thereby allowing the surface layer to be peeled off from the laminate tube container body and the base material layer. A tube container with a wound sheet as described in claim 6.

8. The aforementioned wound sheet has a base layer, The base material layer is bonded to the body of the laminate tube container via the easily peelable sealant layer, thereby allowing the base material layer to be peeled off from the laminate tube container body. A tube container with a wound sheet as described in claim 6.

9. The tube container with a wound sheet according to claim 6, wherein the wound sheet has a peeling trigger.

10. The tube container with a wound sheet according to claim 6, wherein the wound sheet is provided with spiral perforations that are axial with the laminate tube container body.

11. The tube container with a winding sheet according to claim 6, wherein the winding sheet has an indication that the winding sheet is peelable.

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