JP6745656B2 - Seal member - Google Patents

Description

The present invention relates to a seal member.

A tamper-evident prevention seal or sealing paper indicating that the product is unopened may be attached to the package of the product. The tamper-evident seal is affixed to the open/close location of the package, typically across the top and side surfaces of the box, and because the seal is not damaged, the tamper-evident seal must be opened after being distributed as a product. Confirmed not to have.

However, it is possible to carry out fraudulent acts to hide the injustice of the contents by means of peeling off the tamper-evident seal so that it will not be damaged and reattaching it, or by attaching a counterfeit seal after peeling off the genuine tamper-evident seal. There is a case to be told.

To prevent such fraud, a fraudulent tamper-evident seal that is difficult to forge may be used. For example, in Patent Document 1, a base material layer, a retroreflective layer laminated on one surface of the base material layer, an adhesive layer laminated on the other surface of the base material layer, and the retroreflective layer. A transparent seal substrate provided via an adhesive layer thereon, wherein the retroreflective layer is a photorefractive material layer, and a holding layer that holds the photorefractive material layer in a state where its surface portion is exposed. , A reflection film provided on the side opposite to the surface portion of the photorefractive material layer, and the adhesive layer forms characters, symbols, figures or a combination thereof, and a counterfeit prevention seal is disclosed. ..

The technique of Patent Document 1 is an excellent technique that provides a tamper-evident seal with a high anti-counterfeiting effect. However, since the thickness of the seal obtained by this technology is relatively large and the bending rebound (stiffness) of the seal is high, it is suitable for sticking to the bent part of the package, for example, the corner part formed by the two adjacent sides of the box. Is not suitable for. In other words, in a seal that is bent and attached, high rigidity overcomes the adhesive force and jumps up to spontaneously peel off, which may prevent the function of preventing unauthorized opening (see FIG. 11).

There is a limit to increasing the adhesive strength of the adhesive used for the tamper evident seal, and it is difficult to overcome the problem of the seal jumping up by increasing the adhesive strength. Therefore, in order to prevent the tampering prevention seal from jumping up, a technique of making a cut in the seal has been proposed.

For example, Patent Document 2 discloses a sticker label in which 3 to 10 linear perforations are provided from an arbitrary position on the peripheral edge of the label toward the opposing peripheral edge.

JP 2012-98568 A JP, 2006-71857, A

The technique of Patent Document 2 achieves both lowering of rigidity by making a cut in the seal to shorten the widthwise direction of the seal material and maintenance of strength by dividing the cut into perforations. It seems that it is based on the target idea. However, the effect of reducing the rigidity of the sealing material by the technique of Patent Document 2 is not sufficient, and it is still unsuitable for sticking to the bent portion of the package.

The present invention has been made in view of the above circumstances. Therefore, an object of the present invention is to provide a seal member which does not bounce up and spontaneously peel off even when attached to a bent portion of a package, and preferably has a high effect of preventing forgery.

The present invention is summarized as follows.

[1] A seal member having one end portion and another end portion opposite to the one end portion, and having at least two continuous cut pattern rows extending between the both end portions,
The notch pattern row is
On a straight line, a first notch pattern having a non-notch part that originates from the one end, a notch part, and a non-notch part that reaches the other end in this order,
On a straight line, a second cut pattern having a cut portion originating from the one end portion, a non-cut portion, and a cut portion reaching the other end portion in this order,
The seal member, wherein the first notch pattern and the second notch pattern in the notch pattern row are present substantially parallel to each other with an interval of 4 mm or less.

[2] The length of at least one of the notches in the second notch pattern is 15% or more with respect to the distance between the one end and the other end, and the non-notches The seal member according to [1], wherein the length is 1 mm or more.

[3] The length of the cut portion in the first cut pattern is 30% or more with respect to the distance between the one end portion and the other end portion, and the length of the non-cut portion is 1 mm. The above is the seal member according to [1] or [2].

[4] The notch pattern row is
Three series of notch patterns consisting of the first notch pattern, the second notch pattern, and the first notch pattern, or the second notch pattern, the first notch pattern, and the second notch It has three consecutive cut patterns,
These three continuous cut patterns are sequentially arranged substantially parallel to each other in the order described above at intervals of 4 mm or less.
The seal member according to any one of [1] to [3].

[5] The seal member according to any one of [1] to [4], which has the cut pattern rows at two positions separated from each other.

[6] The seal member according to any one of [1] to [5], which is made of a material having at least one resin layer.

[7] The seal member according to any one of [1] to [6], which has a retroreflective layer.

According to the present invention, there is provided a seal member that does not spring up and spontaneously peel even if it is attached to a bent portion of a package. According to a preferred aspect of the present invention, there is provided a seal member that has the effect of having a high anti-counterfeit effect in addition to the fact that it does not spring up and spontaneously peel off.

FIG. 1 is a schematic top view for explaining a notch aspect of a seal member in Examples 1 and 2. FIG. 2 is a schematic top view for explaining a notch aspect of the seal member in Comparative Examples 1 and 2. FIG. 3 is a schematic top view for explaining a notch aspect of the seal member in Comparative Examples 3 and 4. FIG. 4 is a schematic top view for explaining a notch aspect of the seal member in Comparative Examples 5 and 6. FIG. 5 is a schematic top view for explaining a notch aspect of the seal member in Comparative Examples 7 and 8. FIG. 6 is a graph showing the rigidity of each seal member measured in Examples and Comparative Examples. FIG. 7 is a schematic top view for explaining the locations of the cuts that are varied in the seal members of Examples 3 to 5. FIG. 8 is a graph showing the relationship between the rigidity of the seal member and the P1 value measured in Example 3. FIG. 9 is a graph showing the relationship between the rigidity of the seal member and the P2 value measured in Example 4. FIG. 10 is a graph showing the relationship between the rigidity of the seal member and the P3 value measured in Example 5. FIG. 11 is a schematic perspective view for explaining a problem of the seal member in the conventional technique. FIG. 12 is a schematic cross-sectional view showing an example of the layer structure of the seal member.

The seal member of the present invention has one end portion and the other end portion facing the one end portion, and has at least two series of cut pattern rows extending between the both end portions.

Since the seal member of the present invention has the pattern row composed of at least two predetermined cut patterns, the rigidity (bending repulsion) near the region where the pattern row exists is reduced. For example, while the conventional sealing member having cuts such as perforations has insufficient rigidity reduction effect, the inventors of the present invention have reason about the reason why the rigidity of the sealing member of the present invention is effectively reduced. I guess as follows.

The conventional seal member is based on the idea of dividing the sealing material in the width direction to reduce the effective width of the material that contributes to the development of the rigidity in order to reduce the rigidity. For example, if a perforation having a length ratio of the notched portion to the non-notched portion of 1:1 is formed, the width of the material that contributes to the development of rigidity is halved. However, the seal member currently used for tampering prevention, for example, a seal member having retroreflective property, has a very high rigidity as compared with ordinary stickers, and the rigidity is sufficiently increased by the approach of reducing the effective width. It cannot be lowered.

The present invention is based on the technical idea of reducing the rigidity by utilizing the twist of the material, not by reducing the effective bending width.

That is, in the seal member,
A first notch pattern consisting of one notch existing in the center in the width direction,
When the seal member is bent, the two notches are formed by having a notch pattern row formed in close proximity to the second notch pattern formed of two notches existing at both ends in the width direction. The seal material sandwiched between the patterns is twisted about the seal width direction, and the rigidity of the seal material is easily and effectively reduced.

As will be understood from Examples described later, the twisting effect is exhibited even when the notch in the first notch pattern and the notch in the second notch pattern do not overlap. .. Both notches may overlap.

The seal member can be composed of, for example, a laminated film described below, and is expected to be attached to a package of a product for use. Therefore, it can be a thin plate having an arbitrary planar shape. The planar shape may be, for example, a rectangle, a circle, an ellipse, etc.; a shape in which some of these shapes are missing; a combination of these shapes; Typically, it has a rectangular shape or a rectangular shape with rounded corners. In the present specification, hereinafter, such shapes may be collectively referred to by the name of “substantially rectangular”.

The size of the seal member of the present invention is arbitrary. When the sealing member is, for example, a substantially rectangular shape, the length of the long side can be 15 mm or more, 20 mm or more, or 30 mm or more, 200 mm or less, 150 mm or less, or 100 mm or less, and the length of the short side is It can be 5 mm or more, 7 mm or more, or 10 mm or more, 50 mm or less, 30 mm or less, or 20 mm or less.

When the seal member has a substantially rectangular shape, the one end and the other end opposite to the one end of the seal member of the present invention refer to two long sides or two short sides of the substantially rectangle. Considering the ease of attaching the seal member and the like, it is preferable to form the cut pattern row so as to extend between the two long sides. Here, the long side means, in the case where the seal member has a circular shape, an arbitrary circular arc having a central angle of less than 180° (preferably 90° or more) in the outer circumference of the circular shape and point-symmetrical with the circular arc. An arc on the opposite side.

The notch pattern row has at least one first notch pattern and at least one second notch pattern. These cut patterns are substantially parallel to each other. The interval between the adjacent cut patterns (hereinafter, also referred to as “P1”) is 4 mm or less. The smaller the distance, the lower the rigidity. Therefore, the value of P1 is preferably less than 4 mm, more preferably 3 mm or less, still more preferably 2 mm or less. On the other hand, since it is difficult in terms of processing technology to set the value of P1 to less than 1 mm, the value of P1 is preferably set to 1 mm or more.

The first cut pattern is a non-cut portion, a cut portion, and the other end which are emitted from the one end on a virtual straight line from one end to the other end in the width direction of the seal member. It has a non-cut portion extending in this order.

In this first notch pattern, the distance from one end to the start point of the notch and the distance from the end point of the notch to the other end (collectively, hereinafter also referred to as "P2"). , The smaller the value, the lower the rigidity. From this viewpoint, P2 is preferably 35% or less of the width of the seal member (the distance from one end where the cut pattern row exists in the seal member to the other end), and 33.3. % Or less, or 30% or less, more preferably 20% or less, or 16.7% or less. On the other hand, even if P2 is made significantly smaller than 16.7% of the width of the seal member, the reduction in rigidity is saturated. Further, if the value is less than 1 mm, there is a fear that the processing technique will be difficult, and the handleability at the time of processing and attaching the seal member will be significantly deteriorated. Therefore, P2 is preferably 1 mm or more, and may be 2 mm or more.

In the first cut pattern, there are two P2 in the width direction. In order to maintain the balance of rigidity of the seal member and prevent partial peeling after sticking the seal member, it is preferable that these two P2 have substantially the same value. Therefore, the length of the cut portion in the first cut pattern is preferably 30% (=100%−(35%×2)) or more with respect to the width of the seal member, and 33.4% (= 100%−(33.3%×2)) or more is more preferable, 40% (=100%−(30%×2)) or more is more preferable, and 60%(=100%−( 20%×2)) or more is particularly preferable. The upper limit of this length is preferably set so that P2 can secure a distance of 1 mm or more or 2 mm or more.

The second notch pattern has a notch part, a non-notch part, and the other notch part that originate from the one end part on a virtual straight line from one end part to the other end part in the width direction of the seal member. It has a notch to the end in this order.

In this second notch pattern, the length of the notch that starts from one end and the length of the notch that extends from the end point of the central non-notch to the other end (collectively below, "P3"). Also, the higher the value, the lower the rigidity. Therefore, at least one of P3 is preferably 15% or more of the width of the seal member, more preferably 16.7% or more, or more preferably 20% or more, and further preferably 30% or more. preferable.

On the other hand, from the viewpoint of ensuring a significant length for the non-cut portion remaining in the central portion of the second cut pattern and giving practical strength to the seal member, at least one of the values of P3 is It is preferably 47.5% or less, more preferably 45.8% or less, still more preferably 40% or less, and particularly preferably 35% or less of the width of the seal member. The length of the non-cut portion at the center of the second cut pattern is preferably 1 mm or more as an actual length.

In order to maintain the balance of rigidity of the seal member and prevent partial peeling of the seal member, it is preferable that two P3 existing in the second cut pattern have substantially the same value.

According to a preferred aspect of the present invention, the notch pattern row is
The first notch pattern, the second notch pattern, and three consecutive notch patterns having the first notch pattern in this order, or the second notch pattern, the first notch pattern, and the second notch pattern in this order. It has a series of three notches.

In these cases, the above-mentioned twisting effect is more effectively exhibited, and the reduction in rigidity becomes easier. When the seal member of the present invention has three continuous cut patterns, the value of the interval P1 between the cut patterns is preferably within the above range. In this case, the two first cut patterns may be formed of substantially the same pattern or different patterns. However, from the viewpoint of effectively exhibiting the twisting effect contemplated by the present invention, it is preferable that both have substantially the same pattern.

The seal member of the present invention may have the above-described notch pattern row at only one place, or may have two or more places on the same seal member at appropriate intervals. The number of cut pattern rows is preferably one or two.

The seal member having one cut pattern row can be suitably used as an authentication seal or the like that is bent and folded in a package to seal an opening formed by two adjacent surfaces and to be attached. For example, in a rectangular parallelepiped box, it is attached to the center of the opening of the lid. In this case, the seal member is attached such that the cut pattern row is aligned with the opening formed by the two adjacent faces that are bent in the package. By sticking in this manner, the rigidity of the seal member at the bent portion of the package is low, so the rigidity of the seal member does not overcome the adhesive force and does not bounce off and peel off, which contributes to the prevention of forgery. ..

The seal member having two cut pattern rows can be preferably used as a seal certification seal for a package having one or two bent openings to be sealed. For example, this is a case of an authentication sticker or the like that is attached over three surfaces adjacent to the U-shape of a thin case. In this case, by sticking the seal member so that the two cut pattern rows are aligned with the corners of the U-shape, the rigidity of the seal member overcomes the adhesive force at both of the two bent portions. It will not bounce up and peel off.

The notch pattern of the notch pattern row may be one that penetrates the seal member, half-cut from the front surface of the seal member, or half-cut from the back surface of the seal member (the side to be attached to a product or the like). Of these, the one that penetrates the seal member is preferable because it has a high effect of reducing the rigidity.

The seal member of the present invention having the above-described cut pattern row can be manufactured using any desired material. The use of a material having high rigidity is preferable in that the effects of the present invention can be effectively exhibited. For example, a seal material having at least one resin layer is suitable. Examples of the resin that constitutes the sealing material include polyester, polyolefin, cellulose, and acrylic resin.

Regarding the rigidity of the sealing material, the bending repulsion (Gurley-stiffness) of 0.750 mN or more, 1.000 mN or more, which is measured according to the bending repulsion A method of JIS L1096 "General woven fabric test method" for the sealing material, or Use of a material of 1.200 mN or more maximizes the effects of the present invention. The upper limit of the Gurley stiffness of the sealing material may be, for example, 3.000 mN or less or 2.000 mN or less.

The sealing material used in the present invention may have, for example, a retroreflective layer, a peeling disintegration layer, or both of them.

The retroreflective layer is
Shows retroreflection in the retroreflection condition;
Under non-retroreflection conditions, it is a layer having optical transparency or a layer that is optically non-transparent and allows reflected light from the reflecting material to be seen.

The retroreflective layer preferably has at least a transparent spherical body layer and a reflective material layer. In addition to these, it may have a surface coating layer, a fixing resin layer, a base material layer, an adhesive layer and the like.

The transparent sphere layer contains a large number of transparent spheres. Examples of the transparent spherical body include glass small spheres (glass beads) and resin beads. The transparent spherical body can have, for example, an average particle size of about 10 μm to 100 μm and a refractive index of about 1.9 to 2.2.

The reflective material layer is provided on the lower surface (inner side of the sealing material) of the transparent spherical body layer directly or indirectly through another layer, and has a function of reflecting light incident on the transparent spherical body layer. .. Examples of the reflective material layer include a layer containing a pearl pigment, a metal thin film, and the like.

The base material layer optionally included in the retroreflective laminate has a function of supporting the transparent spherical body layer and the transparent reflecting material layer, and is, for example, a film made of a resin such as polyester, polyolefin, cellulose, or an acrylic resin. Can be

The fixing resin layer, if present, is located between the transparent spherical body layer and the base material layer, and is a layer for aligning and fixing a large number of transparent spherical bodies. As the resin forming the fixed resin layer, for example, an acrylic resin, a urethane resin, a silicone resin, or the like can be used. A cross-linking agent may be added to the resin to increase the strength of the fixed resin layer.

When the retroreflective laminate has an adhesive layer, a known material for a seal member can be used as its constituent material.

When the peeling disintegration layer is once attached and then peeled off, characters such as "VOID", "opened", or a pattern having the same meaning as these appears on the peeling disintegration layer and the pasting destination, and peeling occurs. By leaving traces of history, it is a laminated body for facilitating the detection of illegal opening and preventing falsification.

The peeling disintegration layer has, for example, at least a surface base material (base material of the peeling disintegration layer), a patterned release layer, a thin film metal layer or a transparent resin layer, and an adhesive layer. A print layer may be further provided on the surface substrate, and release paper may be further provided under the adhesive layer.

When the seal having the peeling disintegration layer is once attached and then peeled off, the thin film metal layer or the transparent resin layer peels together with the surface substrate in the area where the patterned peeling layer does not exist, but in the area where the patterned peeling layer exists, Since the thin film metal layer or the transparent resin layer is peeled off from the surface base material and remains at the attachment destination together with the adhesive layer, a character or a pattern corresponding to the pattern of the patterned peeling layer is raised.

As the base material of the peeling disintegration layer, for example, a polyester film or the like;
Examples of the patterned release layer include silicone resin and the like;
As the thin film metal layer, for example, an aluminum vapor deposition layer, a silver vapor deposition layer, a printed layer made of aluminum paste or the like;
Examples of the adhesive layer include polyester-based adhesives, acrylic-based adhesives, urethane-based adhesives, vinyl oxide-based adhesives and the like;
Each can be used.

When the peeling disintegration layer is once attached and then is to be peeled off, the traceability of the peeling history is left on the peeling disintegration layer and the pasting destination, whereby the security is further improved.

A commercially available product may be used as the peeling disintegration layer, and examples thereof include "TE Poppy 50 VOID PAT-18LK" manufactured by Lintec Corporation.

FIG. 12 shows a schematic diagram for explaining the configuration of a preferred embodiment of the seal member in the present invention. The seal member 100 of FIG. 12 has the print layer 20 on the surface base material 11 in the peelable disintegrative layer 10, and has the retroreflective layer 30 thereon. In FIG. 12, the print layer 20 is depicted as a thick film layer that constitutes a particular layer, but this is a convenient expression for exaggerating the presence of the print layer. In reality, it should be understood that the print layer is formed into a visible thin film by a known printing means or the like, and a special layer may not be formed due to the presence of the print layer.

The peelable disintegrating layer 10 in the seal member 100 of FIG. 12 is a laminate having a surface base material 11, a patterned peeling layer 12, a thin film metal layer or a transparent resin layer 13, and an adhesive layer 14 in this order. is there.

The retroreflective layer 30 in the seal member 100 of FIG. 12 is a laminated body having a transparent spherical body layer 31, a transparent reflective layer 32, a fixing resin layer 33, a base material layer 34, and an adhesive layer 35 in this order. is there.

<Examples 1 and 2, and Comparative Examples 1 to 8>
In the following examples and comparative examples, the rigidity (Gurley-stiffness) of the seal member having various cuts was examined.

The seal member of each of the examples and comparative examples was an open type retroreflective film "LIGHT FORCE ^™ LFU-1400" manufactured by Maruhito Co., Ltd. as a retroreflective layer and "made by Lintec Co., Ltd." as a peeling disintegration layer. TE poppy 50 VOID PAT-1 8LK". Using a sealing machine “PC45” manufactured by Shiki Co., Ltd., two layers were laminated so that the adhesive layer of the retroreflective layer adhered to the base material of the peeling disintegration layer, and this was laminated with a pinnacle blade. A stamp member was punched into a rectangular seal shape having a width of 12 mm and a length of 38 mm, and at the same time, a notch was formed to produce a seal member of each Example and Comparative Example. Here, the cuts were made to penetrate the seal member.

The shapes of the cuts in the seal members of Examples 1 and 2 and Comparative Examples 1 to 8 are shown in FIGS. 1 to 5.

Each of the seal members was cut to a length of 25 mm from the end of the long side, and used as a sample for measuring rigidity. Using a Gurley stiffness meter manufactured by Kumagai Riki Kogyo Co., Ltd., grasp the vicinity of the side cut away by the chuck (the side farther from the remaining notch) and bend rebound of JIS L1096 "General Textile Testing Method" The rigidity was measured according to the method A. The measurement was carried out with n=5, and the measurement results in which the average value was adopted as the measurement value are shown in Table 1 and FIG.

<Examples 3 to 5>
In the following examples, in order to verify the preferable aspect of the cut pattern in the seal member of the present invention, an experiment was conducted to check the rigidity by varying the size of each part of the cut pattern. Specifically, after punching the same laminated body of the retroreflective layer and the peeling disintegration layer as in Example 1 above into a rectangular seal shape having a width of 12 mm and a length of 38 mm, the cut patterns P1 and P2 shown in FIG. , And P3 were varied, and the Gurley stiffness was measured by the same method as above.

[Example 3]
In Example 3, P2 and P3 of the cut pattern were each fixed to 2 mm, and P1 was varied in the range of 1 to 4 mm to measure the rigidity. The measurement results are shown in FIG.

From FIG. 8, it is understood that when P1=4 mm, the rigidity is comparable to that of Comparative Example 6, and the smaller the P1 value, the smaller the rigidity and the better. From this, it was found that the value of P1 is preferably less than 4 mm, more preferably 3 mm or less, and further preferably 2 mm or less. Since it is difficult in terms of processing technology to set the value of P1 to less than 1 mm, the value of P1 is preferably set to 1 mm or more.

[Example 4]
In Example 4, among the cut patterns, P1 was fixed to 1 mm, P3 was fixed to 2 mm, P2 was made to have the same size at two places, and the rigidity was measured by varying in the range of 1 to 5 mm. The measurement results are shown in FIG. When P2 is 2 mm or more, there is no overlapping portion between the notch portion in the first notch pattern at the top and bottom of FIG. 7 and the notch portion in the middle second notch pattern.

As shown in FIG. 9, the smaller the value of P2, the smaller the rigidity, and it was good when P2 was 4 mm or less (33.3% or less). When P2 was 2 mm or less, the decrease in rigidity was saturated, and even if P2 was further decreased, no significant change in rigidity was observed. Since it is difficult in terms of processing technology to set the value of P2 to less than 1 mm, the value of P2 is preferably set to 1 mm or more. In the case of P2=2 mm to 4 mm (16.7% to 33.3%) in which there is no overlap between the notch portion of the first notch pattern and the notch portion of the second notch pattern, the effect of decreasing the rigidity is also obtained. It was a surprise that this was happening.

[Example 5]
In Example 5, among the cut patterns, P1 was fixed to 1 mm, P2 was fixed to 2 mm, and P3 was made to have the same size at two places, and the rigidity was measured by varying the range of 5.5 to 1 mm. .. The measurement results are shown in FIG.

As shown in FIG. 10, the larger the value of P3, the smaller the rigidity, and it was good when P3 was 2 mm or more (16.7% or more). When P3 was 4 mm or more (33.3% or more), the decrease in rigidity was saturated, and even if P3 was further increased, there was no significant change in rigidity. Due to processing technology requirements, it is preferable to secure a length of the central non-cut portion of the second cut portion of 1 mm or more. Therefore, the value of P3 is preferably 5.5 mm or less.

From the above results, it is understood that the following ranges are preferable in the seal member having the size and pattern shown in FIG. 7.
P1: 1 mm or more and less than 4 mm P2: 1 mm or more, 33.3% or less with respect to the width of the seal member, more preferably 16.7% or less P3: 16.7% or more with respect to the width of the seal member, and the remainder is 1 mm that's all

10 Peeling disintegrative layer 11 Surface base material 12 Patterned peeling layer 13 Thin film metal layer or transparent resin layer 14 Adhesive layer 20 Printing layer 30 Retroreflective layer 31 Transparent spherical body layer 32 Transparent reflective layer 33 Fixed resin layer 34 Base material layer 35 Adhesive layer 100 Seal member

Claims (7)

A seal member having one end portion and another end portion opposite to the one end portion, and having at least two series of cut pattern rows extending between the both end portions,
The notch pattern row is
On a straight line, the non-slit portion emanating from said one end, one notch, and have a non-slit portion extending to the other end portion in this order, and have a non-cut portion and the cut portion other than the above No, the first notch pattern,
On a straight line, slit portion emanating from said one end, one non-cut portions, and have a slit portion extending to the other end portion in this order, and have a cut portion and a non-cut portion other than the above Not having a second notch pattern,
The seal member, wherein the first notch pattern and the second notch pattern in the notch pattern row are present substantially parallel to each other with an interval of 4 mm or less. The length of at least one of the notches in the second notch pattern is 15% or more with respect to the distance between the one end and the other end, and the length of the non-notches Is 1 mm or more, The seal member of Claim 1. The length of the cut portion in the first cut pattern is 30% or more with respect to the distance between the one end portion and the other end portion, and the length of the non-cut portion is 1 mm or more. The seal member according to claim 1 or 2. The cut pattern row,
Three series of notch patterns consisting of the first notch pattern, the second notch pattern, and the first notch pattern, or the second notch pattern, the first notch pattern, and the second notch It has three consecutive cut patterns,
These three continuous cut patterns are sequentially arranged substantially parallel to each other in the order described above at intervals of 4 mm or less.
The sealing member according to any one of claims 1 to 3. The seal member according to any one of claims 1 to 4, wherein the cut pattern rows are provided at two positions separated from each other. The seal member according to any one of claims 1 to 5, which is made of a material having at least one resin layer. The sealing member according to any one of claims 1 to 6, which has a retroreflective layer.

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