JP6003584B2 - Seal lid and lid material - Google Patents

Description

  The present invention relates to a seal lid and a lid material.

  Containers such as plastic bottles and glass bottles that are used by taking out the contents in a container several times a little at a time are widely used because of their ease of use.

  These reusable containers were discarded when the contents were used up, but they were packed in refill containers so that they could be refilled with repetitive containers because of waste problems and awareness of waste. The refilled contents have been refilled into reusable containers.

  As the refill container, a liquid laundry detergent, a shampoo, a rinse, a body soap, a standing pouch or a liquid paper container for packaging liquid contents such as soy sauce and cooking oil is used.

  On the other hand, refill containers have come to be used for powdered or granular contents such as instant coffee. In the case of powdered or granular contents, it may take time to transfer the refillable container opening as described above to the reusable container opening. The contents may spill out without properly entering the opening of a container that is repeatedly used, and the surroundings and hands may be soiled. In addition, there is a risk that the quality of the contents may deteriorate due to frequent exposure to the air, evaporation of the scent and flavor of the contents, or absorption of moisture in the atmosphere and moisture.

  In order to prevent such a situation and refill, the refill container provided with a seal lid at the opening part is applied to the opening part of the container to be used repeatedly and pushed in to break the seal lid and fill the contents at once. There are refillable containers.

  For example, there is a lid having a barrier property sealed to a container body such as a paper cup. The container body has a bottomed cylindrical shape, and a hopper is fitted into the opening of the container body. The hopper is connected to the rising wall that fits into the opening and the lower end of the rising wall, and is inclined upward and centrally. A funnel with a lid sealing the top of the funnel.

  This lid is a resin layer whose innermost layer includes a polyethylene sealant layer, and a metal foil layer is adhered to the outer side of the innermost resin layer via an adhesive layer. The strength weak point portion is provided so that the metal foil layer including the innermost layer can be torn and opened by the strength weak point portion.

  Therefore, when the container body is turned upside down and the lid is pushed so as to be pushed into the mouth of the replenishing container, it breaks along the strength weak points provided radially from the center, and the contents are collected in the center with a funnel. The replenishment container is replenished (Patent Document 1).

JP 2009-262955 A

  With the lid described in Patent Document 1, the lid may be torn when dropped from a store display shelf or the like. Therefore, in order to prevent this tearing, if the connection between the perforations consisting of cuts and joints is lengthened, breakage due to impact such as dropping can be prevented. On the other hand, when refilling, the seal lid is difficult to tear, and refilling is possible. Becomes difficult.

  The present invention has been made in view of the above circumstances, and when refilling a container, when refilling it, it can be easily pushed through the mouth of a container to be used repeatedly, and against a drop impact. It is an object to provide a seal lid and a lid material which are not easily torn.

The invention according to claim 1 of the present invention is a seal lid that is attached to a mouth portion of a refill container, closes the mouth portion, and pushes and opens the mouth portion.
A plurality of linear weakening lines composed of perforations in which the weakening lines provided on the seal lid intersect substantially at the center of the seal lid and in which cuts and joints are alternately provided in a straight line, and the linear weakening lines Each of the terminal ends of the seal lid is composed of a bifurcated weakening line formed by a cut extending in a bifurcated manner through a connecting portion.

  The invention according to claim 2 of the present invention is the seal lid according to claim 1, wherein the bifurcated weakening line has a U-shape or a C-shape.

  The invention according to claim 3 of the present invention is provided with a small bifurcated weakening line composed of a break that extends into a bifurcated smaller than the bifurcated weakening line, with a connecting portion interposed between the linear weakening line and the bifurcated weakening line. The seal lid according to claim 1 or 2, wherein

  The invention according to claim 4 of the present invention is the seal lid according to claim 3, wherein the small bifurcated weakening line has a U shape or a C shape.

  The invention according to claim 5 of the present invention is a lid material characterized in that a surface film is detachably provided on the outer surface of the seal lid according to any one of claims 1 to 4.

  The invention according to claim 6 of the present invention is characterized in that an adhesive portion where the seal lid and the surface film can be peeled is an outer edge side adhesive portion provided along an outer edge of the lid material, and an inner side of the outer edge side adhesive portion. The lid material according to claim 5, further comprising an intermediate bonding portion provided at a position that does not overlap the weakening line.

  When refilling, the sealing lid and the lid material of the present invention can be easily pushed from the weakening line by pressing against the mouth of the container to be used repeatedly, and are not easily broken against a drop impact. In particular, the resistance to drop impact is improved by providing the two-way weakening line.

(A) It is explanatory drawing which showed typically 1st Embodiment of the seal lid of this invention with the plane. (B) It is explanatory drawing which took out the part of X enclosed with the circle of FIG. 1 (A). (A) It is explanatory drawing which showed typically 2nd Embodiment of the seal lid of this invention with the plane. (B) It is explanatory drawing which took out the part of Y enclosed with the circle of FIG. 2 (A). It is explanatory drawing which showed typically 1st Embodiment of the seal lid of this invention in the cross section. It is explanatory drawing which showed typically an example of the cover material of this invention in the cross section. It is explanatory drawing which showed typically an example of the cover material of this invention by the back surface. It is explanatory drawing which showed typically the refill container which attached an example of the cover material of this invention with the perspective view. It is explanatory drawing which showed typically the cross section of the refilling container which attached an example of the cover material of this invention.

<First Embodiment>
Hereinafter, a first embodiment for carrying out the present invention will be described.
FIG. 1 (A) is an explanatory diagram schematically showing a first embodiment of the seal lid of the present invention in a plan view, and FIG. 1 (B) is a portion of X surrounded by a circle in FIG. 1 (A). It is explanatory drawing.

  As shown in FIG. 1A, the seal lid 100 of the first embodiment is provided with a weakening line 10, and the weakening line 10 and three linear weakening lines 11 intersecting at substantially the center of the seal lid. The bifurcated weakened line 12 is provided at the end of the linear weakened line 11 via a connecting portion.

  The linear weakening line 11 is composed of perforations in which cuts and joints are alternately provided in a straight line. Further, the bifurcated weakening line 12 is formed by a break extending into the bifurcated. Each cut is provided so as to penetrate the cross section of the seal lid 100.

  As shown in FIG. 1 (B), which is a circled portion X in FIG. 1 (A), the bifurcated weakening line 12 is composed of two straight cuts, which are formed apart from each other in a square shape. It has become. In this case, there is a possibility that a gap is generated with respect to the breaking direction proceeding linearly along the straight line weakening line 11, and there is a possibility that the break is not connected to the bifurcated weakening line 12.

  Therefore, in this embodiment, although provided apart, the shape of a square with two linear cut roots may be attached. However, it is better that the size of the square-shaped bifurcated weakening line 12 is as small as possible. Because it becomes a cut in the shape connected to the shape of the letter, it may break due to being caught in the manufacturing process of the refill container, such as opening by curl of the film, etc., or the contents may spill out There is a fear.

  The length from end to end of the two bifurcated weakening lines 12 provided at both ends of the linear weakening line 11 is preferably 50 to 75% of the diameter of the seal lid 100. If it is shorter than this, it will be difficult to open it by breaking from the weakening line 11, and if it is longer than this, it will be easy to break when dropped.

<Second Embodiment>
The second embodiment for carrying out the present invention will be described below.
FIG. 2 (A) is an explanatory view schematically showing a second embodiment of the seal lid of the present invention in a plan view, and FIG. 2 (B) is a portion of Y surrounded by a circle in FIG. 2 (A). It is explanatory drawing.

  As shown in FIG. 2A, the seal lid 200 of the second embodiment is provided with a weakening line 20, and the weakening lines 20 intersect with three linear weakening lines 21 that intersect at approximately the center of the seal lid 200. Then, a bifurcated weakened line 22 is provided at the end of the linear weakened line 21, and a connecting portion is sandwiched between the linear weakened line 21 and the bifurcated weakened line 22 so as to spread into a bifurcated smaller than the doubled weakened line 22 A small bifurcated weakening line 23 made of a cut is provided.

  The linear weakening line 21 is composed of perforations in which cuts and joints are alternately provided in a straight line. Further, the bifurcated weakening line 22 and the small bifurcated weakening line 23 are formed by cuts extending in two. Each cut is provided so as to penetrate the cross section of the seal lid 200.

  As shown in FIG. 2B, which is a circled Y portion in FIG. 2A, the bifurcated weakening line 22 is composed of two straight cuts, and the two straight cuts are formed apart from each other. It has a letter C shape. In the present embodiment, as in the first embodiment, the two straight cuts are provided apart from each other, but may be a dogleg shape with the roots of the two straight cuts attached. .

  Further, the small bifurcated weakened line 23 smaller than the bifurcated weakened line 22 provided between the linear weakened line 21 and the bifurcated weakened line 22 is composed of two straight cuts, and the roots of the two straight cuts are combined. It is in the shape of a letter with a stick. In this case, it is preferable that the size of the V-shaped small bifurcated weakening line 23 is as small as possible. However, it is necessary to have at least a size that allows the break to spread in two.

  In the present embodiment, the bases of the two straight cuts are formed to be bonded to each other, but the two straight cuts may be formed apart from each other, and may be shaped like a letter C. In particular, this embodiment in which the bifurcated weakened line 22 is formed in a C-shape and the small bifurcated weakened line 23 is formed in a U-shaped configuration is preferable. With this configuration, the linear weakened line 21 breaks in the linear direction. After the small bifurcated weakening line 23 is received, the seal lid 200 can be easily opened by being smoothly taken over by the bifurcated weakening line 22.

  The length from end to end of the two bifurcated weakening lines 22 provided at both ends of the linear weakening line 21 is preferably 50 to 75% of the diameter of the seal lid. If it is shorter than this, it will be difficult to open it by breaking from the weakening line 20, and if it is longer than this, it will be easy to tear when dropped.

  FIG. 3 is an explanatory view schematically showing a cross section of the first embodiment of the seal lid of the present invention.

  As shown in FIG. 3, the seal lid 100 includes a base film 31 and a sealant layer 32. The base film 31 is made of a plastic film such as polyester, nylon, or polypropylene. Although an unstretched film may be used, a biaxially stretched film is suitable so that it can be easily broken.

  The sealant layer 32 is a layer to be thermally welded, and is a layer for sealing to a container body and the like which will be described later. A thermoplastic resin such as polyethylene or polypropylene is used, and it may be laminated with the base film 31 as a film, or may be laminated by extrusion lamination.

  The weakening line 10 is provided as a continuous cut from the base film 31 to the sealant layer 32 of the seal lid 100.

  The layer configuration of the seal lid 100 of the first embodiment has been described with reference to FIG. 3, but the same applies to the seal lid 200 of the second embodiment.

Next, the lid material of the present invention using the seal lid of the present invention will be described.
FIG. 4 is an explanatory diagram schematically showing an example of the lid material of the present invention in cross section, and FIG. 5 is an explanatory diagram schematically showing an example of the lid material of the present invention on the back surface.

  The lid member 300 of this example is provided with a surface film 400 so as to be peelable on the outer surface of the seal lid 100 or the seal lid 200. By providing the surface film 400, the powder and granules of the contents are prevented from spilling, and at the same time, the seal lid provided with the weakened line is protected from being broken. In addition, depending on the contents, necessary gas barrier properties and water vapor barrier properties are imparted to prevent deterioration of the contents.

  As shown in the cross-sectional view of FIG. 4 and the rear view of FIG. 5, the lid member 300 of this example is provided with the surface film 400 on the outer surface of the seal lid 100 or the seal lid 200 along the outer edge of the seal lid. The outer edge side adhesive part 41 and the outer edge side adhesive part 41 are attached so as to be partially bonded and peelable via an intermediate adhesive part 42 provided at a position that does not overlap the weakening line inside the outer edge side adhesive part 41.

  In this example, the intermediate bonding portion 42 is provided in a ring shape so as to surround the weakening line. The shape of the intermediate bonding portion 42 is not limited thereto, and may be provided so as not to break the weakening line when the surface film 400 is peeled from the seal lid.

  In this example, the surface film 400 includes a surface base material layer 43 and an easy peel sealant layer 44. The front substrate layer 43 is made of a plastic film such as polyester, nylon, or polypropylene. Although an unstretched film may be used, it is preferable to use a biaxially stretched film so that it does not stretch when peeled.

  In consideration of the barrier property, an inorganic oxide vapor-deposited film having a high barrier property may be used for the surface base material layer 43, an inorganic oxide vapor-deposited film, another highly barrier film, a metal foil, etc. May be used as the front substrate layer 43.

  The easy peel sealant layer 44 is preferably one that can be thermally welded to the base film 31 on the outer surface side of the seal lid in a peelable manner. For example, if the base film 31 on the outer surface side of the seal lid is a polyethylene terephthalate film, a polyethylene terephthalate-based easy peel sealant film that can be thermally welded to the easy peel sealant layer 44 in a peelable manner can be used.

  What is necessary is just to select the easy peel sealant layer 44 according to each base film 31 of a seal lid. In some cases, a layer that can be thermally welded to the easy peel sealant layer 44 in a peelable manner may be provided on the outer surface of the base film 31.

  The surface of the easy peel sealant layer 44 of the surface film 400 is opposed to the surface of the base film 31 on the outer surface side of the seal lid, and is heat-sealed in an overlapping manner. The lid member 300 can be manufactured by providing the bonding portion 42 and integrating them.

Next, a refill container equipped with an example of the lid of the present invention will be described.
FIG. 6 is an explanatory view schematically showing a refill container with an example of the lid material of the present invention in perspective, and FIG. 7 schematically shows a cross-section of the refill container with an example of the lid material of the present invention. FIG.

  A refillable container 500 to which an example of the lid material of this example is attached includes a container body 50 including a cylindrical paper cup 51 and a funnel member 52. The paper cup 51 is provided with a bottom member 54 at the lower end of a cylindrical body member 53 and a top curl portion 55 at the upper end. The top curl portion 55 is crushed to have a flat upper surface in order to heat seal the lid member 300.

  The inside of the paper cup 51 is filled with a powdery or granular content 56. On the contents 56, a funnel member 57 is provided that includes a funnel portion 57 that expands downward and is narrowed upward, and an attachment portion 58 that attaches the funnel portion 57 to the container body 50.

  The funnel portion 57 is provided so that when the refill container 500 is turned over when refilling, the contents 56 gather through the funnel portion 57 in the center and repeatedly enter the mouth portion of the use container.

  The lid member 300 is thermally welded to the top curl portion 55 of the container body 50 by heat sealing. Further, the funnel member 52 is attached at a position where the funnel portion 57 touches the lid member 300.

  The lid member 300 is provided with a knob portion 45, and the tip portion of the knob portion 45 is formed by partially bonding the seal lid and the surface film 400 to form the knob bonding portion 46. In addition, a cut line 47 is provided between the heat sealing portion between the top curl portion 55 and the lid member 300 and the knob bonding portion 46 where the seal lid of the lid member 300 of the refill container 500 is cut.

  The paper cup 51 is provided with a hot-melt resin layer on both sides of the paperboard layer. When barrier properties are required, an inorganic oxide vapor-deposited film having a barrier property or a metal foil such as aluminum may be provided between the inner hot-melt resin layer and the paperboard layer. The funnel member 52 is provided with a similar hot-melt resin layer on at least the surface of the paper layer attached to the paper cup, and is attached to the inner surface of the paper cup by heat welding.

  In order to refill the contents 56 of the refill container 500 into an empty reusable container, first, holding the knob bonding portion 46, when turning, only the surface film 400 peels off from the cut line 47, and a seal lid appears. .

  The refill container 500 is turned upside down, a seal lid is applied to the mouth portion of the reusable container, and pushed in, so that the tip of the funnel portion 57 of the refill container 500 enters the mouth portion of the reusable container 500. As a result, the weakening line of the seal lid is broken, and the content 56 passes through the funnel portion 57 repeatedly into the use container, and can be refilled.

  Specific examples of the present invention will be described below.

<Example 1>
As a laminate for the seal lid, a linear low density polyethylene film 60 μm of the sealant layer 32 was bonded to a biaxially stretched polyethylene terephthalate film 12 μm of the base film 31 by dry lamination.

  As a laminate for the surface film, the back surface of the alumina-deposited biaxially stretched polyethylene terephthalate film 12 μm of the front substrate layer 43 is printed, and the easy peel sealant layer 44 for the easy peel film 30 for polyethylene terephthalate is dry-laminated on the printed surface. Was pasted together.

  The surface of the base film 31 of the laminated body for the seal lid and the surface of the easy peel sealant layer 44 of the laminated body for the surface film are overlapped and heated with a seal mold from the surface film side, as shown by 300 in FIG. The outer edge side bonding portion 41, the intermediate bonding portion 42, and the knob bonding portion 46 are provided.

  Subsequently, three straight weakening lines 11 as shown in FIGS. 1 (A) and 1 (B) intersect at the approximate center of the sealing lid by half-cutting from the seal lid side, and the end of the linear weakening line 11 is obtained. In addition, a weakened line 10 including a bifurcated weakened line 12 provided via a connecting portion and a cut line 47 as shown in FIG. 6 are provided.

The length of the linear weakening line 11 is 72 mm, and the length including the bifurcated weakening line 12 at both ends is 80 mm.
Provided. And the external shape of the cover material was punched out, and the cover material of Example 1 was created.

<Example 2>
By half punching from the seal lid side, three linear weakening lines 21 as shown in FIGS. 2 (A) and 2 (B) intersect at the approximate center of the seal lid, and at each end of the linear weakening line 21. The small bifurcated weakened line 23 and the bifurcated weakened line 22 are each formed of a weakened line 20 provided through a connecting portion, and the length of the linear weakened line 21 is 72 mm, and the small bifurcated weakened line 23 and the bifurcated weakened line 22 at both ends. A lid material of Example 2 was produced in the same manner as Example 1 except that the length including the length was set to 80 mm.

  Hereinafter, comparative examples of the present invention will be described.

<Comparative Example 1>
Comparative Example 1 was performed in the same manner as in Example 1 except that the bifurcated weakening line 12 was not provided on the seal lid, the weakening line was provided by only three linear weakening lines, and the length of the linear weakening line was 84 mm. The lid material was made.

<Comparative example 2>
A lid material of Comparative Example 2 was prepared in the same manner as Comparative Example 1 except that the length of the three linear weakening lines provided was 80 mm.

<Evaluation method>
The lid materials of Examples 1 and 2 and Comparative Examples 1 and 2 produced as described above are composed of a cylindrical paper cup 51 and a funnel member 52 as shown in FIGS. 6 and 7 and filled with instant coffee powder. A refillable container was prepared by attaching to the top curl portion 55 of the container main body 50 so that the sealant layer side of the lid was facing by heat sealing.

<Opening strength>
The surface films were peeled off from the refill containers to which the lid materials of Examples 1 and 2 and Comparative Examples 1 and 2 were attached, respectively, to obtain refill containers sealed with a seal lid.

  This refill container is turned over, and a seal lid is applied to the mouth of the reusable container so that the tip of the funnel 57 of the refill container 500 enters the mouth of the reusable container. The maximum force (Newton, N) from when the flat plate was moved and compressed so that the space between the flat plates was narrowed between the flat plates was reduced by breaking from the weakening line of the seal lid was measured as the opening strength. The results are summarized in Table 1.

<Drop test>
From a height of 60 cm, a refill container filled with instant coffee powder and attached with the lids of Examples 1 and 2 and Comparative Examples 1 and 2. It was tilted 45 ° from the upright and dropped onto a concrete floor.

  This was repeated until tearing occurred from the weakening line. The number of tears that occurred at the first time was taken as 1, the number of times that the tear occurred was taken as the drop test result, the number of samples n was 3, and the results are summarized in Table 1.

＜比較結果＞
開封強度は、実施例１と２の本発明の蓋材のほうが比較例１と２の蓋材より弱く、開けやすくなっているが。然るに落下試験では、実施例１と２の本発明の蓋材では、破れるまでの回数が多く、破れにくいことがわかる。また、実施例１と２の蓋材では、開封強度は大
差ないが、落下試験で実施例２の蓋材の方が、比較するとやや破れにくい結果となった。

<Comparison result>
Although the opening strength of the lid material of the present invention of Examples 1 and 2 is weaker than that of Comparative Examples 1 and 2, the opening strength is easier to open. However, in the drop test, it can be seen that the lid materials of Examples 1 and 2 of the present invention have many times until they are torn and are not easily torn. In addition, the lid materials of Examples 1 and 2 were not much different in opening strength, but the results of the lid material of Example 2 in the drop test were somewhat less torn.

  As described above, by using the sealing lid and the lid material of the present invention for the refill container, when the refill container is refilled, it can be easily pushed and pressed against the mouth of the container to be used repeatedly. It is easy to be broken and is not easily broken against a drop impact when it is dropped by distribution or the like.

100, 200 ... seal lid 300 ... cover material 400 ... surface film 500 ... refill container 10, 20 ... weakening line 11, 21 ... linear weakening line 12, 22 ... Bifurcated weakening line 23 ... Small bifurcated weakening line 31 ... Base film 32 ... Sealan layer 41 ... Outer edge side adhesive part 42 ... Intermediate adhesive part 43 ... Front base material layer 44 ... Easy peel sealant layer 45 ... knob part 46 ... knob adhesive part 47 ... cut line 50 ... container main body 51 ... paper cup 52 ... funnel member 53 ... trunk member 54 ... -Bottom member 55 ... Top curl part 56 ... Contents 57 ... Funnel part 58 ... Mounting part

Claims (6)

A sealing lid that attaches to the mouth of a refill container, closes the mouth, pushes and opens the mouth,
A plurality of linear weakening lines composed of perforations in which the weakening lines provided on the seal lid intersect substantially at the center of the seal lid and in which cuts and joints are alternately provided in a straight line, and the linear weakening lines A seal lid, characterized in that each end has a bifurcated weakening line consisting of a cut extending in a bifurcated manner through a connecting portion.   The seal lid according to claim 1, wherein the bifurcated weakening line has a U shape or a C shape.   3. A small bifurcated weakening line comprising a cut extending in a bifurcated smaller than the bifurcated weakening line is provided, with a connecting portion interposed between the linear weakening line and the bifurcated weakening line, respectively. The sealing lid as described.   The seal lid according to claim 3, wherein the small bifurcated weakening line has a U shape or a C shape.   A cover material, wherein a surface film is detachably provided on an outer surface of the seal cover according to any one of claims 1 to 4.   A peelable adhesive portion between the seal lid and the surface film is provided at an outer edge side adhesive portion provided along an outer edge of the lid material, and at a position that does not overlap the weakening line inside the outer edge side adhesive portion. The lid material according to claim 5, further comprising an intermediate bonding portion.

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