JP6671783B2 - Delamination container - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a laminated peeling container including an outer layer body forming an outer shell of a container, and an inner layer body releasably laminated inside the outer layer body.

  Containers for storing cosmetics such as lotions, shampoos, rinses, liquid soaps, food seasonings, etc., have an outer layer forming the outer shell of the container and a reduction layer that is releasably laminated inside the outer layer. A deformable inner layer body, and between the outer layer body and the inner layer body, a vertical band-like adhesive band for partially bonding the outer layer body and the inner layer body, and accompanying the pouring of the contents contained in the inner layer body. There is known a laminate peeling container (also referred to as a delamination container) in which only the inner layer body is reduced in volume while introducing outside air between the outer layer body and the inner layer body (see Patent Document 1).

  In such a laminated peeling container, the bottom has a pinch-off portion formed by cutting with a blow mold split die, and the outer layer body and the inner layer body are sandwiched and pressed flat by the split die in the pinch-off portion. There is one in which the outer layer body and the inner layer body at the pinch-off portion are prevented from peeling by crushing and fusing. In this case, the volume reduction deformation of the inner layer body is performed in parallel with the pinch-off portion, that is, the volume reduction deformation toward the plane extending through the pinch-off portion in the central axis direction of the container, thereby discharging the contents. Is performed smoothly.

JP-A-4-339759

  By the way, in the laminated peeling container as described above, an initial peeling treatment for peeling the inner layer body from the outer layer body may be performed in advance in the manufacturing process. The initial peeling treatment of such an inner layer body is performed by blowing the air inside the laminate peeling container after blow-molding the laminated peeling container, or blowing air into the space between the outer layer body and the inner layer body from the outside air introduction hole. Done. After the initial release treatment, air is again injected into the inner layer body from the mouth to return the inner layer body to the outer layer body in a state of being used, that is, when discharging the contents of the container from the inner layer body. In addition, the inner layer body is easily separated from the outer layer body.

  However, by simply performing the initial peeling treatment, the inner layer body and the outer layer body are brought into close contact with each other when the inner layer body is once peeled from the outer layer body and then returned, and the inner layer body is smoothly peeled off during use. There was nothing.

  Further, for example, when only one adhesive band extending along the central axis is provided on the parting line of the body, when the inner layer body is deformed to reduce the volume in the initial peeling process, the outer layer is moved from the outer air introduction hole to the outer layer. When the air that has flowed into the space between the body and the inner layer body flows into the opposite side of the adhesive band, the inner layer body is reduced in volume perpendicularly to the extending direction of the pinch-off portion, that is, toward the adhesive band side. As a result, damage such as a hole in the inner layer body occurs near the end of the pinch-off portion located on the opposite side of the adhesive band, or the inner layer body approaches the outer layer body near the outside air introduction hole, and the air flow path (outside air) (The inflow path) may be blocked.

  Therefore, the present invention is intended to facilitate the separation of the inner layer body during use and to facilitate the introduction of outside air, and to suppress the breakage of the inner layer body and the blockage of the outside air inflow path in the initial peeling treatment of the inner layer body, and the lamination separation. It is intended to provide a container.

The present invention has been made in order to solve the above problems, the laminated peeling container of the present invention has a mouth, a body, and a bottom,
An outer layer forming an outer shell of the container, a volume-reducible deformable inner layer disposed releasably laminated inside the outer layer, and one of circumferential directions of the body portion between the outer layer and the inner layer; A vertical strip-shaped adhesive band located on the side,
The bottom has a pinch-off portion,
The body is located at a position where the circumferential angle from the adhesive band is greater than the circumferential angle from the adhesive band to the outside air introduction hole formed at the mouth of the outer layer body in plan view of the container. Characterized by having a concave or convex vertical rib extending to the vicinity of the upper end.

  Note that, in the laminated peeling container of the present invention, the body portion has a circumferential angle from the adhesive band in a position smaller than the vertical rib in a plan view of the container, and an upper end below the vertical rib. It is preferred to have other concave or convex longitudinal ribs located.

Further, in the laminate peeling container of the present invention, the body has a plurality of the other vertical ribs,
It is preferable that the upper ends of the plurality of other vertical ribs are positioned lower as the circumferential angle from the adhesive band is smaller.

  Further, in the laminated peeling container of the present invention, it is preferable that a circumferential angle from the adhesive band to the outside air introduction hole is 45 ° or more and 135 ° or less in plan view of the container.

  ADVANTAGE OF THE INVENTION According to this invention, while peeling of an inner layer body at the time of use smoothes outside air introduction, and lamination peeling which can suppress breakage of the inner layer body and blockage of the outside air inflow path in the initial peeling treatment of the inner layer body A container can be provided.

It is a side view of the lamination peeling container which is one embodiment of the present invention. It is a top view of the lamination peeling container of FIG. It is a bottom view of the lamination peeling container of FIG.

  Hereinafter, the present invention will be described more specifically with reference to the drawings. In this specification, the claims, and the abstract, “upper” is a side where the mouth is located with respect to the bottom of the outer layer body, and “lower” is the opposite side.

  FIG. 1 shows one embodiment of a delamination container according to the present invention. A laminated peeling container 1 (hereinafter, also simply referred to as a “container”) shown in FIG. 1 includes a cylindrical mouth portion 2, a body portion 3 continuing below the mouth portion 2, and a bottom portion 4 that closes a lower end portion of the body portion 3. Having.

  Further, the laminated peeling container 1 includes an outer layer body 5 forming an outer shell of the container 1, an inner layer body 6 capable of volume reduction and deformation, which is laminated and releasably disposed inside the outer layer body 5, and the outer layer body 5 and the inner layer body. 6, a vertical band-shaped adhesive band 7 that partially bonds the outer layer body 5 and the inner layer body 6 to each other. The inside of the inner layer body 6 is a storage space for contents. The inner layer body 6 is laminated on the outer layer body 5 so as to be peelable. The outer layer body 5 and the inner layer body 6 of this embodiment form a cylindrical laminated parison by co-extruding the synthetic resin forming the outer layer body 5 and the synthetic resin forming the inner layer body 6 in a molten state. It can be obtained by blow molding a laminated parison. In addition, as long as the adhesive band 7 is provided on one side in the circumferential direction of the trunk 3, one or two or more adhesive bands may be used. Can be provided between the two. Although the length of the adhesive band 7 can be changed as appropriate, it is preferable that the adhesive band 7 is disposed over the entire height of the body 3. In this example, one adhesive band 7 extends linearly along the parting line of the trunk 3 and is disposed over the entire height of the trunk 3.

  The mouth portion 2 has an upper opening 2a that opens upward, a screw portion 2b for holding a pouring cap (not shown), a hole 2 that penetrates the mouth portion 2 of the outer layer body 5, and the outer layer body 5 and the inner layer. An outside air introduction hole 2c is provided to allow the internal space formed between the body 6 and the outside world to communicate with each other. Note that the spout cap may be held by an undercut portion instead of the screw portion 2b.

  The trunk portion 3 extends upward from the lower end portion connected to the bottom portion 4 with substantially the same diameter, and then decreases in diameter. The body 3 has flexibility, and can be bent inward by an external pressure, and can be restored to the original shape when the pressure is released.

  As shown in FIGS. 2 and 3, the bottom portion 4 has a disk shape with its central portion curved inward, and has a pinch-off portion 4 a formed by cutting with a blow mold split die. The pinch-off portion 4a is provided with a reinforcing rib 4b formed by sandwiching the outer layer body 5 and the inner layer body 6 with a split mold and crushing the outer layer body 5 and the inner layer body 6 flat. The inner layer body 6 is configured so as not to be peeled off. In this example, the pinch-off portion 4 a extends linearly along the parting line of the bottom portion 4 and is located on the same plane as the adhesive band 7.

  Here, the body 3 has a half portion on the side where the outside air introduction hole 2c is located (the outside air introduction hole 2c side with a plane passing through the center line 7a of the adhesive band 7 and the center axis C of the container 1 shown in FIG. 2 as a boundary). Half), two first vertical ribs 8 and 9, a second vertical rib 10 shorter than the first vertical ribs 8 and 9, and a third vertical rib 11 shorter than the second vertical rib 10. Is provided. Although the first vertical ribs 8 and 9, the second vertical rib 10, and the third vertical rib 11 are concave vertical ribs that are concave toward the inside of the container 1 in this example, they protrude toward the outside of the container 1. There may be convex vertical ribs. In the present example, the body 3 has vertical ribs extending to the vicinity of the upper end of the body 3 such as the first vertical ribs 8 and 9 in the circumferential region from the adhesive band 7 to the outside air introduction hole 2c. It does not have a configuration. Further, in the present example, the vertical ribs 18 each having the same shape as the first vertical ribs 8, 9, the second vertical ribs 10, and the third vertical ribs 11 are provided in a half opposite to the side where the outside air introduction hole 2c is located. 19, the vertical ribs 20 and the vertical ribs 21 are provided, but the present invention is not limited to this, and a configuration without the vertical ribs may be adopted.

  The first vertical ribs 8 and 9 extend to near the upper end 3 a of the body 3. That is, the upper ends 8 a and 9 a of the first vertical ribs 8 and 9 are located near the upper end 3 a of the body 3. Further, as shown in the plan view of FIG. 2, the first vertical ribs 8 and 9 are provided at a circumferential angle θ1 from the adhesive band 7 to the outside air introduction hole 2c (the central axis in the plan view of the container 1 shown in FIG. 2). Circumferential angles θ2 and θ3 from the adhesive band 7 to the first vertical ribs 8 and 9 rather than the center line 7a of the adhesive band 7 from the center line 7a of the adhesive band 7 to the center of the outside air introduction hole 2c). 2, in a position where the angle (circumferential angle from the center line 7a of the adhesive band 7 to the center of each of the upper ends 8a, 9a of the first vertical ribs 8, 9) about the center axis C is increased. . In addition, the first vertical ribs 8 and 9 may be only one of them or three or more. In addition, a vertical rib whose upper end is located below the first vertical ribs 8 and 9 may be additionally provided.

  The upper end 10a of the second vertical rib 10 is located lower than the upper ends 8a, 9a of the first vertical ribs 8,9. The upper end 11a of the third vertical rib 11 is located lower than the upper end 10a of the second vertical rib 10. That is, the upper ends of the second vertical ribs 10 and the third vertical ribs 11 are positioned lower as the circumferential angles θ4 and θ5 from the adhesive band 7 are smaller.

  Further, circumferential angles θ4 and θ5 from the adhesive band 7 to the second vertical ribs 10 and the third vertical ribs 11 (from a center line 7a of the adhesive band 7 around the central axis C in plan view of FIG. 2). Each circumferential angle between the center of the upper end 10a of the second vertical rib 10 and the center of the upper end 11a of the third vertical rib 11) is smaller than the circumferential angles θ1, θ2, and θ3.

  The lower ends 8b and 9b of the first vertical ribs 8 and 9, the lower end 10b of the second vertical rib 10, and the lower end 11b of the third vertical rib 11 are located at the same height. However, they may be arranged at different heights.

  In the container 1 having the above-described configuration, when the outside air flows from the outside air introduction hole 2c during the initial peeling process, the first vertical ribs near the upper ends 8a and 9a on the first vertical ribs 8 and 9 side. Since the inner layer body 6 is hardly peeled off from the outer layer body 5 due to the unevenness of 8, 9, the adhesive band 7 side (that is, the second vertical rib 10 and the third vertical rib 11 side) than the first vertical ribs 8, 9. Then, the inner layer body 6 is peeled off first to form an air flow path. Thus, the flow direction of the outside air from the outside air introduction hole 2c at the time of the initial peeling process can be restricted to the adhesive band 7 side. Therefore, when the volume of the inner layer body 6 is reduced by the initial peeling process, the volume of the inner layer body 6 is reduced toward a plane parallel to the pinch-off portion 4a. As described above, by reducing the volume of the inner layer body 6 in a desired direction, a hole in the inner layer body 6 due to the outside air flowing into the opposite side of the adhesive band 7 or the outside air near the outside air introduction hole 2c. Blockage of the inflow path can be suppressed.

  Further, when air is press-fitted into the inner layer body 6 once separated by the initial peeling process, the inner layer body 6 is restored to its original position in the first vertical ribs 8, 9, the second vertical rib 10, and the third vertical rib 11. Since it is difficult to return to the shape, the inner layer body 6 can be prevented from re-adhering to the outer layer body 5. Therefore, the inner layer body 6 is easily peeled from the outer layer body 5 during use, and the introduction of outside air can be facilitated.

  Also, the second vertical rib 10 and the third vertical rib 11 are configured such that the smaller the circumferential angles θ4 and θ5 from the adhesive band 7 are, the lower the upper ends 10a and 11a are located. In addition, it is possible to easily secure a flow path of air above the second vertical rib 10 and the third vertical rib 11, so that the inflow direction of the air flowing from the outside air introduction hole 2c can be further directed to the adhesive band 7 side. .

  Here, when the distance between the upper ends 8a, 9a of the first vertical ribs 8, 9 and the upper end 3a of the body 3 is 0 mm, that is, the upper ends 8a, 9a of the first vertical ribs 8, 9 are connected to the body 3 As a result of forming the container 1 matched with the upper end portion 3a of the inner layer body and performing the initial peeling process, the peeling direction (direction of volume reduction deformation) of the inner layer body 6 is substantially parallel to the pinch-off portion 4a, 6 was smoothly peeled off and reduced in volume. Similarly, even when the distance between the upper ends 8a, 9a of the first vertical ribs 8, 9 and the upper end 3a of the body 3 is 1.5 mm, 3 mm, and 7 mm, the inner layer body at the time of the initial peeling process is also used. 6 is substantially parallel to the pinch-off portion 4a, and the inner layer body 6 is smoothly peeled off and reduced in volume, but when the distance is 9 mm, The inner layer body 6 was not perforated and a hole was formed. Therefore, it is preferable that the distance between the upper ends 8a and 9a of the first vertical ribs 8 and 9 and the upper end 3a of the body 3 be 7 mm or less.

  In the present embodiment, the circumferential angle θ1 from the adhesive band 7 to the outside air introduction hole 2c is set to 90 °, but is not limited to this and can be changed as appropriate. The circumferential angle θ1 is preferably 45 ° or more. According to this, since the inner layer body 6 is easily peeled off from the outer layer body 5 near the outside air introduction hole 2c, introduction of outside air from the outside air introduction hole 2c is prevented. It can be smoothed.

  Further, the circumferential angle θ1 is preferably 135 ° or less, and according to this, the first vertical rib 8 is located at a position where the circumferential angles θ2 and θ3 from the adhesive band 7 are larger than the outside air introduction hole 2c. , 9 can be easily secured.

  What has been described above merely shows one embodiment of the present invention, and it goes without saying that various changes may be made within the scope of the claims. For example, in the above embodiment, the second vertical rib 10 and the third vertical rib 11 are provided one by one in the half of the container 1 on the side of the outside air introduction hole 2c. However, the present invention is not limited to this. Only 10 or only the third vertical rib 11 may be provided, or another vertical rib may be provided. In the case where another vertical rib is provided, the upper end of the other vertical rib is not located near the upper end 3a of the body 3, that is, lower than the upper ends 8a, 9a of the first vertical ribs 8, 9. Arrange so that it is located. In the above embodiment, the outer layer 5 is made of polyethylene, the adhesive band 7 is made of maleic acid-modified polyolefin, and the inner layer 6 is made of ethylene vinyl alcohol / maleic acid-modified polyolefin / polyethylene. The material can be appropriately selected.

DESCRIPTION OF SYMBOLS 1 Lamination peeling container 2 Mouth part 2a Top opening 2b Screw part 2c External air introduction hole 3 Trunk part 3a Upper end part 4 Bottom part 4a Pinch-off part 4b Reinforcement rib 5 Outer layer body 6 Inner layer body 7 Adhesive band 7a Center line of adhesive band 8 First vertical Rib (vertical rib)
8a Upper end of first vertical rib 9 First vertical rib (vertical rib)
9a Upper end of first vertical rib 10 Second vertical rib (other vertical rib)
10a Upper end of second vertical rib 11 Third vertical rib (other vertical rib)
11a Upper end of third vertical rib 18, 19, 20, 21 Vertical rib C Central axis θ1 Circumferential angle θ2 from adhesive band to outside air introduction hole θ2 Circumferential angle from adhesive band to first vertical rib θ4 From adhesive band Circumferential angle from the second vertical rib θ5 Circumferential angle from the adhesive band to the third vertical rib

Claims (3)

With a mouth, a trunk, and a bottom,
An outer layer forming an outer shell of the container, a volume-reducible deformable inner layer disposed releasably laminated inside the outer layer, and one of circumferential directions of the body portion between the outer layer and the inner layer; A vertical strip-shaped adhesive band located on the side,
The bottom has a pinch-off portion,
The body is located at a position where the circumferential angle from the adhesive band is greater than the circumferential angle from the adhesive band to the outside air introduction hole formed at the mouth of the outer layer body in plan view of the container. upper section have a concave or convex longitudinal ribs extending up to the vicinity of,
The body has another concave or convex vertical rib whose upper end is located below the vertical rib at a position where the circumferential angle from the adhesive band in the plan view of the container is smaller than the vertical rib. , Laminated peeling container. The trunk has a plurality of the other vertical ribs,
Multiple said other longitudinal ribs of this, the greater the circumferential angle from the adhesive strip small, the upper end is positioned lower, delamination container according to claim 1. 3. The laminate peeling container according to claim 1, wherein a circumferential angle from the adhesive band to the outside air introduction hole is 45 ° or more and 135 ° or less in a plan view of the container. 4.

Images