Stacked bottles

Abstract

The present invention provides a laminated bottle that ensures that the outermost release layer is peeled off and disposed of separately. [Solution] A laminated bottle 1 having a bottle body 2 and a handle 3, the bottle body 2 having a mouth 2a, a body 2b and a bottom 2c connected in this order with the mouth facing downwards, and formed by a main material layer 4 and an outermost layer 5, the outermost layer 5 having a slit 5a and a release layer 5b, the slit 5a is formed by the material forming the main material layer 4 extending to the outermost layer 5, extending continuously or intermittently from the mouth 2a1 of the mouth 2a to the bottom 2c, the release layer 5b is peelably bonded to the main material layer 4 and the slit 5a, and the handle 3 is integrally formed with the release layer 5b at a position adjacent to the slit 5a in the mouth 2a.

Description

[[Technical Field]]

[0001] The present invention relates to a laminated bottle. [[Background Art]]

[0002] Resin containers are required to be recycled for environmental protection; however, multi-material containers are difficult to recycle, such as bottles decorated with printing, vapor deposition or the like on the outermost layer, and bottles in which the resin of the outermost layer is different from that of the main material layer. Accordingly, a laminated bottle is known in which the outermost layer is constituted by a release layer, and the release layer can be peeled off for separate disposal (see, for example, Patent Document 1). [[Prior Art Documents]] [[Patent Documents]]

[0003] [[Patent Document 1]] Japanese Patent No. 7570785 [[Summary of the Invention]] [[Problems to be Solved by the Invention]]

[0004] An object of the present invention is to provide a laminated bottle that allows a user to reliably remember to peel off the release layer constituting the outermost layer for separate disposal. [[Means for Solving the Problems]]

[0005] One aspect of the present invention is as follows.

[0006] [Item 1] comprising a bottle body and a grip portion, the bottle body has a mouth portion, a body portion and a bottom portion connected in this order from top to bottom, and is formed of a main material layer and an outermost layer, the outermost layer has a slit portion and a release layer, the slit portion is formed by the material forming the main material layer extending into the outermost layer, and extends continuously or intermittently from the mouth edge of the mouth portion to the bottom portion, The release layer is detachably bonded to the main material layer and the slit portion. The aforementioned knob portion is integrally formed with the release layer at a position adjacent to the slit portion in the mouth portion of the laminated bottle.

[0007] [Section 2] The aforementioned knob has a column portion and a ring portion, The column portion extends upward from its base, which is integrally formed with the peeling layer at the opening, and forms a gap between itself and the opening. The ring portion extends circumferentially from the upper end of the column portion along the outer edge of the mouth, as described in item 1, for the laminated bottle.

[0008] [Section 3] The laminated bottle according to item 2, wherein the inner periphery of the ring portion is integrally connected to the outer periphery of the mouth portion via a portion intended to break.

[0009] [Section 4] The entire knob portion is located below the upper surface of the mouthpiece, as described in any one of items 1 to 3 of the stacked bottle.

[0010] [Section 5] The mouth portion has a mouth body, The mouth portion body expands in a stepped manner from the lower end of the mouth and extends downward, The entire knob portion does not protrude radially outward from the outer circumferential surface of the mouth portion body, as described in any one of items 1 to 4 of the laminated bottle. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a laminated bottle that ensures that the outermost layer, which is the release layer, is not forgotten for separate disposal. [Brief explanation of the drawing]

[0012] [Figure 1] This is a side view of a stacked bottle according to one embodiment of the present invention, viewed from a first direction. [Figure 2] This is a magnified section of Figure 1. [Figure 3] It is a side view of the laminated bottle shown in FIG. 2 viewed from the second direction. [Figure 4] It is a top view of the laminated bottle shown in FIG. 3. [Figure 5] It is a bottom view of the laminated bottle shown in FIG. 3. [Figure 6] It is an A-A cross-sectional view of FIG. 3. [Figure 7] It is a B-B cross-section of FIG. 4. [Figure 8] It is a cross-sectional view showing a state where the peelable layer is peeled off by pulling the knob from the state shown in FIG. 7. MODES FOR CARRYING OUT THE INVENTION

[0013] Hereinafter, embodiments of the present invention will be described by way of example with reference to the drawings.

[0014] As shown in FIGS. 1 to 5, in one embodiment of the present invention, the laminated bottle 1 includes a bottle body 2 and a knob 3. The bottle body 2 has a mouth portion 2a, a body portion 2b, and a bottom portion 2c connected in this order from top to bottom. The mouth portion 2a has a cylindrical shape centered on the central axis O. In the present embodiment, the direction from the bottom portion 2c toward the mouth portion 2a along the central axis O is referred to as upward, the opposite direction is referred to as downward, the direction orthogonal to the central axis O is referred to as the radial direction, and the direction circling around the central axis O is referred to as the circumferential direction.

[0015] As shown in FIGS. 6 to 7, the bottle body 2 is formed by a main material layer 4 and an outermost layer 5. As shown in FIG. 6, the outermost layer 5 has a slit portion 5a and a release layer 5b, and the slit portion 5a is formed by the material forming the main material layer 4 extending into the outermost layer 5. As shown in FIGS. 1, 4 and 5, the slit portion 5a continuously extends from the mouth portion 2a1 of the neck portion 2a to the bottom portion 2c. The bottom portion 2c has a central recess 2c1 and a grounding portion 2c2. The central recess 2c1 is formed in a concave shape protruding toward the inner surface side at the central portion of the bottom portion 2c when viewed from the bottom. The grounding portion 2c2 is formed on the outer peripheral portion of the central recess 2c1, and comes into contact with and is supported by a support surface when the laminated bottle 1 is placed on the support surface in an upright posture. The slit portion 5a continuously extends to the central recess 2c1. The slit portion 5a is not limited to a configuration that extends continuously, and may be configured to extend intermittently.

[0016] The release layer 5b is releasably adhered to the main material layer 4 and the slit portion 5a. The inner surface of the release layer 5b is formed of a first material. The outer surfaces of the main material layer 4 and the slit portion 5a are formed of a second material. The first material has low compatibility with the second material and is releasably adhered to the second material.

[0017] The main material layer 4 has a main layer 4a and an inner layer 4b. The main layer 4a and the slit portion 5a are formed of the second material, and the inner layer 4b is formed of a third material. The second material has high compatibility with the third material and adheres to the third material. Portions formed by the second material and the third material are indicated by hatching in the drawings.

[0018] The first material, the second material and the third material are each a resin. The third material may be formed of virgin resin instead of recycled resin, and the second material may be formed of the same type of virgin resin as the third material and recycled resin regenerated by recycling. The virgin resin constituting the third material may be a petroleum-derived resin, and the virgin resin constituting the second material may be a plant-derived resin.

[0019] The release layer 5b may consist of multiple layers, each comprising a functional layer such as a printing layer, a barrier layer, and a light-shielding layer. The release layer 5b may also have an adhesive layer that bonds these functional layers together. The material forming the outer surface of the release layer 5b is the same as the material forming the surface of the column 3a of the handle 3.

[0020] The gripping portion 3 is integrally formed with the release layer 5b at a position adjacent to the slit portion 5a in the opening portion 2a. The gripping portion 3 has a columnar portion 3a and a ring portion 3b. The columnar portion 3a extends upward from its base, which is integrally formed with the release layer 5b in the opening portion 2a, and forms a gap G between it and the opening 2a1. The ring portion 3b extends circumferentially from the upper end of the columnar portion 3a along the outer peripheral edge of the opening 2a1. The inner peripheral edge of the ring portion 3b is integrally connected to the outer peripheral edge of the opening 2a1 via a planned fracture portion 6. The planned fracture portion 6 consists of a thin-walled portion.

[0021] The entire knob portion 3 is located below the upper surface of the mouth portion 2a1. The mouth portion 2a has a mouth portion body 2a2, which extends downward from the lower end of the mouth portion 2a1 in a stepped manner, and the entire knob portion 3 does not protrude radially outward from the outer circumferential surface of the mouth portion body 2a2. The base of the knob portion 3 is integrally formed with the release layer 5b on the upper surface of the mouth portion body 2a2.

[0022] The main body of the opening 2a2 has a locking projection 2a3 for attaching a cap member, such as a mounting cap or closing cap for a discharge pump, to the opening 2a. The locking projection 2a3 is convex and protrudes radially outward. The locking projection 2a3 is not limited to being screw-shaped. The configuration in which the entire knob 3 is located below the upper surface of the opening 2a1 makes it easier to ensure a seal between the cap member and the opening 2a. The configuration in which the entire knob 3 does not protrude radially outward from the outer circumferential surface of the main body of the opening 2a2 makes it possible to prevent the cap member from hitting the knob 3 and breaking the portion intended to break 6 when attaching the cap member to the opening 2a.

[0023] The torso 2b has a neck region 2b1, a shoulder region 2b2, and a torso body region 2b3. The neck region 2b1 extends downward from the lower end of the mouth body 2a2 in a stepped manner, the shoulder region 2b2 extends downward from the lower end of the neck region 2b1 in a widened diameter, and the torso body region 2b3 extends downward from the lower end of the shoulder region 2b2.

[0024] The laminated bottle 1 is formed by extrusion blow molding. The laminated bottle 1 has a parting line mark corresponding to the parting line PL of the mold used for extrusion blow molding. When viewed from above, the laminated bottle 1 has a flattened shape with a long axis and a short axis, and the long axis extends along the parting line PL. However, the laminated bottle 1 is not limited to a flattened shape.

[0025] The laminated bottle 1 can be obtained by a manufacturing method that includes a blow molding process. In this manufacturing method, in the blow molding process, a parison formed by the main material layer 4 and the outermost layer 5 is extruded, held in a mold, and fluid is supplied into the parison from a blow nozzle, thereby blow molding the parison into a bottle body 2 that conforms to the shape of the mold cavity. The knob portion 3 can be formed simultaneously with or after the blow molding process.

[0026] According to the laminated bottle 1 of this embodiment, when the laminated bottle 1 is disposed of, the cap member is removed from the mouth 2a, and the tab 3 is exposed at the mouth 2a1, so that the peel-off layer 5b that makes up the outermost layer 5 is not forgotten and disposed of separately. Separation can be performed in the following procedure. First, the ring portion 3b is pinched and pulled to break the portion to be broken 6, and then the finger is hooked onto the ring portion 3b and pulled further, so that the peel-off layer 5b is pulled through the column portion 3a as shown in Figure 8, and peeled from the main material layer 4 starting from the upper end of the slit portion 5a. Then, it is peeled towards the bottom portion 2c and separated from the main material layer 4. In this way, according to this embodiment, easy separation can be achieved by the tab 3.

[0027] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and the embodiments described above can be modified in various ways without departing from the spirit of the present invention. [Explanation of symbols]

[0028] 1. Stacked bottle 2 Bottle body 2a Mouth 2a1 Mouth 2a2 Mouth body 2a3 Locking protrusion 2b Torso 2b1 Neck area 2b2 shoulder area 2b3 Torso main body area 2c bottom 2c1 Central recess 2c2 Grounding part 3. Thumb part 3a Pillar 3b Ring section 4 Main material layer 4a main layer 4b inner layer 5 Outermost layer 5a Slit section 5b Delamination layer 6. Expected fracture point G Gap O center axis PL parting line

Claims

1. It has a bottle body and a handle, The bottle body has a mouth, a body, and a bottom, arranged in that order with the mouth facing downwards, and is formed by a main material layer and an outermost layer. The outermost layer has a slit portion and a release layer, The slit portion is formed by the material forming the main material layer extending to the outermost layer, and extends continuously or intermittently from the opening to the bottom of the opening. The release layer is detachably bonded to the main material layer and the slit portion. The aforementioned knob portion is integrally formed with the release layer at a position adjacent to the slit portion in the mouth portion of the laminated bottle.

2. The aforementioned knob has a column portion and a ring portion, The column portion extends upward from its base, which is integrally formed with the peeling layer at the opening, and forms a gap between itself and the opening. The laminated bottle according to claim 1, wherein the ring portion extends circumferentially from the upper end of the column portion along the outer edge of the mouth.

3. The laminated bottle according to claim 2, wherein the inner periphery of the ring portion is integrally connected to the outer periphery of the mouth portion via a portion intended to break.

4. The stacked bottle according to claim 1, wherein the entire knob portion is located below the upper surface of the mouth.

5. The mouth portion has a mouth body, The mouth portion body expands in a stepped manner from the lower end of the mouth and extends downward, The stacked bottle according to claim 1, wherein the entire knob portion does not protrude radially outward from the outer circumferential surface of the mouth portion body.

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