Sealing member and method for attaching the sealing member

Abstract

To provide a seal member in which peeling by paper resilience from an object to be stuck is suppressed even when the seal member is stuck in a bent state, and a method for sticking a seal member.SOLUTION: A seal member is stuck while being curved so as to form a virtual axis line, wherein the base material of the seal member has paper texture, and the virtual axis line and the direction of the paper texture are substantially the same. There are provided a seal member and a method for sticking a seal member in which peeling by paper resilience from an object to be stuck is suppressed even when the seal member is stuck in a bent state.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a seal member that is attached with a part protruding from an object to be attached.

Background Art

[0002] Conventionally, product names and advertising have been described on seal members, and they have been attached to the surface of a container with a part of the seal member protruding. Such seal members are also called POP seals or POP labels and are attached to products to promote sales.

[0003] For example, Patent Document 1 describes using a film or paper made of a plastic resin as a base material for the seal member.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] When attaching a seal member to a curved surface of an object to be attached with a part protruding from the object to be attached, a restoring force (also called waist or bending rigidity) that tries to return the attached seal member from the bent state to the flat state acts. Therefore, due to this restoring force, it is necessary to provide the type of adhesive and the area of the adhesive part so that the seal member does not peel off. On the other hand, the seal member may be peeled off by a person at the product sales site and sold, and it is required to be difficult to peel off during product distribution and easy to peel off when a person tries to peel it off intentionally.

[0006] Furthermore, with the increasing attention on environmental issues in recent years, there is a growing demand to avoid the use of resins. While using paper as a sealing material is a possibility, paper presents a problem: it is stiffer and more prone to peeling than plastic resin films.

[0007] Therefore, the object of the present invention is to provide a sealing member and a method for applying a sealing member that suppresses peeling from the object to which it is applied due to the restorative force of the paper, even when the sealing member is applied in a bent state. [Means for solving the problem]

[0008] As a result of diligent research into the above-mentioned problems, the inventors have found that a sealing member that is curved to form a virtual axis and attached to the surface, using paper with a paper grain as the base material of the sealing member, and making the direction of the virtual axis and the direction of the paper grain substantially the same, reduces the restorative force of the paper base material, making it difficult to peel off, and thus completed the present invention. In other words, the present invention relates to the following sealing member and method for attaching the sealing member.

[0009] The sealing member of the present invention, which solves the above problems, For the object to be attached, A sealing member that is curved and attached to form a virtual axis, The sealing member comprises a base material, an adhesive layer, and a non-adhesive layer. An adhesive layer is provided on one side of the base material. In the adhesive layer, a non-adhesive layer is partially provided on the side opposite to the side on which the substrate is provided. base The material has a paper-like texture. The virtual axis and the direction of the paper grain are approximately the same. the law of nature, The sealing member is attached so as to protrude from the object to be attached, at least in the portion where a non-adhesive layer is provided. It is characterized by the following. With this sealing material, the virtual axis and the direction of the paper grain are approximately the same when the material is attached. Compared to when the paper grain is perpendicular to the virtual axis, the restorative force of the paper base material is reduced, resulting in a sealing material that is less likely to peel off.

[0010] Also, as one embodiment of the seal member of the present invention, the base material is characterized in that the paper thickness is 60 μm or more and the upper limit value is 100 μm or less. According to this seal member, since it has the direction of the paper grain and a specific thickness, the restoring force of the paper of the base material can be reduced, and it is possible to suppress peeling due to the restoring force and to prevent the base material from being torn when the seal member catches during peeling or in the distribution process.

[0011] Also, as one embodiment of the seal member of the present invention, the adhesive force of the adhesive of the seal member is in the range of ball tack No. 8 to No. 10 and 1.7 (N / 10 mm) or more to 3.5 (N / 10 mm) or less in the measurement by the J.Dow method. According to this seal member, since it has the direction of the paper grain and a specific adhesive force of the adhesive, the restoring force of the paper of the base material can be reduced, and it is possible to suppress peeling due to the restoring force and to prevent the base material from being torn when the adhesive force is too strong during peeling.

[0012] Another embodiment of the present invention involves the following for the object to be attached: A method of attaching a seal member that is curved and attached so as to form a virtual axis, The sealing member comprises a base material, an adhesive layer, and a non-adhesive layer. An adhesive layer is provided on one side of the base material. In the adhesive layer, a non-adhesive layer is partially provided on the side opposite to the side on which the substrate is provided. base The material has paper grain, The sealing member is [[ID=Z5]]Virtual axis and paper is attached to the object to be attached Furthermore, in the portion where at least a non-adhesive layer is provided, Attachment object To protrude from so that the grain directions are substantially the same. Rare It is characterized by being attached. According to this method of attaching the seal member, since it is attached in a state where the virtual axis and the direction of the paper grain are substantially the same, the restoring force of the paper of the base material is smaller than when the paper grain is orthogonal to the virtual axis, and it is possible to provide a method of attaching a seal member that is difficult to peel off.

Effect of the Invention

[0013] According to the present invention, it is possible to provide a seal member that is attached in a bent state and a method for attaching the seal member, which suppresses peeling due to the restoring force of paper from the object to be attached.

Brief Description of the Drawings

[0014] [Figure 1] It is a schematic explanatory view showing the usage state of the seal member according to an embodiment of the present invention. FIG. (A) is a schematic view showing the state where the seal member is attached. FIG. (B) is a schematic view showing the cross-sectional view taken along the line A1 - A1 of FIG. (A). [Figure 2] It is a cross-sectional view taken along the line B1 - B1 of FIG. 1(A) of the seal member according to an embodiment of the present invention, and is a schematic explanatory view showing only the seal member. [Figure 3] It is a schematic explanatory view showing the bent state of the base material of the seal member according to an embodiment of the present invention. FIG. (A) is a schematic view showing the state of the base material bent along the direction of the paper grain. FIG. (B) is a schematic view showing the state of the base material bent in a direction perpendicular to the paper grain 21.

Mode for Carrying Out the Invention

[0015] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Note that the method for attaching the seal member of the present invention shall be replaced with the following description of the configuration of the seal member and the method of attachment. Also, this embodiment does not limit the present invention.

[0016] 〔Embodiment of the Present Invention〕 FIG. 2 is a schematic cross-sectional view showing the configuration of the seal member 1 according to an embodiment of the present invention. The seal member 1 of the embodiment of the present invention includes a base material 2, an adhesive layer 3, and a non-adhesive layer 4. In the seal member 1, the adhesive layer 3 is provided on the entire one-sided surface of the base material 2, and further, the non-adhesive layer 4 is partially provided on the adhesive layer 3. As shown in Figure 1, the sealing member 1 is attached to the object 5 to be attached, such as a container, in a curved state so as to form a virtual axis 6 (the axis of the virtual circle 61 shown in Figure 1(B)), matching the curved surface of the object. When the sealing member 1 is attached in a curved state, the virtual axis 6 and the paper grain 21 of the base material 2 are attached in a state where they are approximately parallel. Compared to when the virtual axis 6 and the paper grain 21 of the base material 2 are perpendicular, the restoring force that tries to return to a flat state due to the paper grain 21 is small, resulting in a sealing member 1 that is less prone to peeling due to the restoring force of the paper.

[0017] (base material) Base material 2 is a component on which textual information, drawings, etc., for advertising and promotional purposes are inscribed. The base material 2 is paper having a grain 21, and the direction indicated by the arrows in Figures 1 and 2 is the grain 21. The grain direction of paper refers to the characteristic of paper produced in a paper machine that continuously produces paper, where the paper fibers flow in a certain direction. The grain direction is sometimes expressed as vertical and horizontal. When you try to tear paper in a straight line, the direction in which it can be torn in a straight line is the vertical grain, while the direction in which it cannot be torn in a straight line and tears in a curved manner is the horizontal grain.

[0018] Furthermore, the grain of the paper 21 also affects the restoring force (stiffness) that causes the paper substrate 2 to return to a flat state from a bent state. As shown in Figure 3(A), the restoring force is smaller when the paper is bent along the grain of the paper 21 (virtual axis 6 is approximately parallel to the grain of the paper 21) than when it is bent perpendicular to the grain of the paper 21 (virtual axis 6 is approximately perpendicular to the grain of the paper 21), as shown in Figure 3(B). Therefore, the inventors of the present invention focused on this difference in restoring force due to the grain of the paper and found that by attaching the sealing member 1 to the object 5 in a state where the restoring force is small, the force that causes it to peel off due to the restoring force can be suppressed, making it difficult for the sealing member 1 to peel off.

[0019] The base material 2 of the present invention is not particularly limited as long as it has a paper grain 21. Specifically, uncoated fine paper that does not have a coating such as a white pigment on its surface, or coated paper such as art paper or gloss paper that has a coating such as a white pigment on its surface can be used. Among these, paper has the characteristic of absorbing moisture and expanding and contracting in a direction perpendicular to the grain 21 of the paper. Therefore, coated paper is preferable to uncoated paper in that it can suppress moisture absorption. Furthermore, among coated papers, gloss paper is the most preferable to use from the viewpoint of being less prone to warping due to humidity.

[0020] Furthermore, the base material 2 may be paper having a paper grain 21 on its own, or it may be a laminate of paper having a paper grain 21 and a laminate of other materials. Examples of laminates include paper without a paper grain, such as Japanese paper, metal film, and resin film. Even when these laminates are used, the effect of the restorative force of the paper grain 21, which tends to peel the base material from the object 5 to which it is attached, can be suppressed.

[0021] Furthermore, the paper used for the base material 2 preferably has a minimum thickness of 60 μm or more and a maximum thickness of 100 μm or less. Within this range, it is possible to suppress peeling due to restorative force while also preventing the base material 2 from tearing when peeling. If the lower limit of the thickness is less than 60 μm, there is a risk that the sealing member 1 may tear due to snagging when peeling it off or during the logistics process. If the upper limit of the thickness exceeds 100 μm, the resilience of the base material 2 increases, making it difficult to harmonize with the adhesive, and there is a risk that the sealing member 1 may tear due to the adhesive being too strong when peeling it off.

[0022] Furthermore, a lower limit of 65 μm or more is more preferable, and 70 μm or more is even more preferable. Within this range, it is more preferable from the viewpoint of the strength of the paper's resilience and the strength to prevent the base material 2 from tearing when the sealing member 1 is peeled off. Furthermore, the upper limit is more preferably 95 μm or less, and even more preferably 90 μm or less. Within this range, the restorative force of the substrate 2 is not excessive, and it is more preferable from the viewpoint of balancing it with the adhesive strength of the adhesive.

[0023] Furthermore, when the sealing member 1 is attached in a curved state to form a virtual axis 6, it is preferable that the sealing member 1 is attached to the object 5 such that the virtual axis 6 and the paper grain 21 of the base material 2 are substantially parallel. "Approximately parallel" means that the paper is attached at an angle between the virtual axis 6 and the grain 21 of the base material 2, ranging from 0 degrees (parallel) to 45 degrees. This state is preferable because it minimizes the influence of the restorative force of the paper grain 21, making it less likely for the paper to peel off due to the recoil force of the grain. Furthermore, the angle at which the virtual axis 6 intersects with the grain 21 of the paper base material 2 is more preferably 0 to 30 degrees, even more preferably 0 to 15 degrees, even more preferably 0 to 5 degrees, and most preferably parallel. The closer it is to parallel, the more effective it is to minimize the influence of the restoring force of the paper grain 21.

[0024] (Adhesive layer) The adhesive layer 3 is the adhesive portion for fixing the sealing member to the curved surface of the object 5 to be attached. The adhesive layer 3 uses an adhesive and is applied so as to cover the entire surface of one side of the base material 2. A non-adhesive layer 4, described later, is provided on a portion of the adhesive layer 3, and the portion without the non-adhesive layer 4 corresponds to the adhesive portion 31, which is the part that is attached to the object 5. The shape of the adhesive portion 31 is not particularly limited. In this embodiment, the example shows that the shape of the adhesive portion 31 is rectangular and the longer side intersects the virtual axis 6, but multiple adhesive portions 31 may be provided spaced apart in the direction that intersects the virtual axis 6.

[0025] The adhesive is not particularly limited, as long as it has an adhesive force stronger than the restoring force of the base material 2 of the bent sealing member 1, and has an adhesive force that allows the sealing member 1 to be peeled off by a person without leaving any adhesive residue and without tearing the sealing member 1. Specifically, the adhesive strength of the adhesive is preferably such that, as measured by the J. Dow method, the ball tack is in the range of No. 8 to No. 10, and the adhesive strength is between 1.7 (N / 10mm) and 3.5 (N / 10mm) (in accordance with JIS Z 0237). From the viewpoint of the restorative force of the paper base material 2 of the sealing member 1, it is possible to create a sealing member 1 that can suppress peeling due to the restorative force while also suppressing tearing of the base material 2 due to excessive adhesive strength when peeling it off.

[0026] Furthermore, a lower limit of 2.0 (N / 10mm) or higher is more preferable, and 2.3 (N / 10mm) or higher is even more preferable. Within this range, it is more preferable from the viewpoint of the restorative force of the base material 2, as it allows for a sealing member 1 that is less likely to peel off. Furthermore, the upper limit is more preferably 3.2 (N / 10mm) or less, and even more preferably 2.9 (N / 10mm) or less. Within this range, it is possible to further suppress the tearing of the base material 2 due to excessive adhesive strength when peeling off the sealing member 1.

[0027] Furthermore, a combination is particularly preferred when the lower limit of the paper thickness used for base material 2 is 60 μm or more and the upper limit is 100 μm or less, and the adhesive strength of the adhesive described above is in the range of No. 8 to No. 10 for ball tack, measured by the J. Dow method, and is between 1.7 (N / 10 mm) and 3.5 (N / 10 mm) or less (in accordance with JIS Z 0237).

[0028] Table 1 below illustrates examples of the thickness and bending stiffness of conventionally used substrates and the paper having the paper grain of the present invention (gloss paper). Transparent PET is polyethylene terephthalate film, white PET is polyethylene terephthalate film with a white printing coating, and silver PET is polyethylene terephthalate film with aluminum vapor deposition. Furthermore, Yupo (registered trademark) is a synthetic paper primarily made from polypropylene and inorganic fillers.

[0029] The bending stiffness in Table 1 below was determined by attaching a 100 x 10 mm test piece to a surface so that a 100 x 10 mm section would deflect, and measuring the deflection v. Calculations were then performed based on JAPAN TAPPI UM409. The calculation formula and parameters are as follows. Formula for bending stiffness EI [mN·m] of a cantilever beam subjected to a uniformly distributed load 2 ]=(wL 4 ) / (8v) w: Load [N], L: Bending length [m], v: Deflection [m], E: Young's modulus [N / mm] 2 ],I: Two-dimensional moment of section [m 4 ] The density and basis weight used for load calculations were based on catalog values. (In the case of transparent PET, white PET, silver PET, and Yupo) Load W=density [kg / m 3 ]×Sample piece[m 3 ] × Gravitational acceleration [N / kg] (For gloss paper) Load W=Basic weight [kg / m 2 ]×Sample piece[m 2 ] × Gravitational acceleration [N / kg]

[0030] [Table 1]

[0031] When measuring bending stiffness, the test specimen should be deflected so that its short side (10 mm) and the formed virtual axis are approximately parallel. In Table 1, "parallel grain" for gloss paper means that the grain of the paper is parallel to the short side of the test specimen (the state shown in Figure 3 (A)), and "perpendicular grain" means that the grain of the paper is perpendicular to the short side of the test specimen (the state shown in Figure 3 (B)).

[0032] (Non-adhesive layer) The non-adhesive layer 4 is provided on the adhesive layer 3 and is located in the remaining portion other than the adhesive portion 31 that adheres the sealing member 1 to the object 5. This remaining portion is the non-adhesive portion 41, which is the portion other than the adhesive portion 31 that prevents the other portion from sticking to the object 5 (also called the adhesive killer). The non-adhesive layer 4 can be made of any material that weakens or eliminates the adhesive strength of the adhesive.

[0033] (Regarding the procedure for applying the sealing material) Next, we will explain how to attach the sealing member 1 to the object 5. First, the flat sealing member 1 is bent to form a virtual axis 6. At this time, the sealing member 1 is bent so that the virtual axis 6 and the paper grain 21 of the base material 2 are approximately parallel. In this state, the sealing member 1 is attached to the object 5 to be attached.

[0034] In this invention, the sealing member 1 is attached to the object to be attached 5 such that the virtual axis 6 and the paper grain 21 are substantially parallel. This reduces the restorative force of the paper grain of the base material 2 compared to the case where the virtual axis 6 and the paper grain 21 are perpendicular. Therefore, even if the adhesive strength of the adhesive is reduced, peeling due to the restorative force of the sealing member 1 can be suppressed. Furthermore, when the sealing member 1 is peeled off, no adhesive remains on the object to which it is attached, and the risk of the sealing member 1 tearing due to excessive adhesive strength is reduced. In other words, the sealing member 1 of this invention has the effect of improving the freedom of selecting an adhesive that is in harmony with the base material 2, adhesive layer 3, and non-adhesive layer 4, and of designing the area of ​​the adhesive portion 31.

[0035] Since the curvature of the virtual circle 61 (the surface of the object 5 to be attached) centered on the virtual axis 6 differs depending on the object 5 to be attached, the effect of improving the freedom in selecting the adhesive and designing the area of ​​the adhesive part 31 is beneficial. [Industrial applicability]

[0036] The sealing member and method for attaching the sealing member of the present invention are suitably used for sealing members with a non-adhesive portion, such as POP seals and POP labels, which have an adhesive portion and a non-adhesive portion, and which can be peeled off from the object to which they are attached without leaving any adhesive residue or tearing of the sealing member, and cannot be reattached. [Explanation of Symbols]

[0037] 1 Seal component, 2 Base material, 3 Adhesive layer, 4 Non-adhesive layer, 5 Object to be attached, 6 Virtual axis, 21 Paper grain, 31 Adhesive part, 41 Non-adhesive part, 61 Virtual circle.

Claims

1. A sealing member that is curved and attached to an object to be attached, forming a virtual axis, The sealing member comprises a base material, an adhesive layer, and a non-adhesive layer. The adhesive layer is provided on one side of the substrate, In the adhesive layer, the non-adhesive layer is partially provided on the surface opposite to the surface on which the substrate is provided. The aforementioned substrate has a paper-like texture, The virtual axis and the direction of the paper grain are substantially the same, The sealing member is characterized in that, at least in the portion where the non-adhesive layer is provided, it protrudes from the object to be attached.

2. The sealing member according to claim 1, characterized in that the base material has a paper thickness of 60 μm or more, with an upper limit of 100 μm or less.

3. The sealing member according to claim 1 or 2, characterized in that the adhesive strength of the adhesive of the sealing member is such that, as measured by the J. Dow method, the ball tack is in the range of No. 8 to No. 10, and is between 1.7 (N / 10 mm) and 3.5 (N / 10 mm).

4. A method for attaching a sealing member to an object to which it is to be attached, wherein the sealing member is curved to form a virtual axis, The sealing member comprises a base material, an adhesive layer, and a non-adhesive layer. The adhesive layer is provided on one side of the substrate, In the adhesive layer, the non-adhesive layer is partially provided on the surface opposite to the surface on which the substrate is provided. The aforementioned substrate has a paper-like texture, A method for attaching a sealing member, characterized in that the sealing member is attached such that the direction of the virtual axis and the direction of the paper grain are substantially the same, and that at least the portion where the non-adhesive layer is provided protrudes from the object to which it is attached.

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