JP4232899B2 - Delami bottle - Google Patents

Description

  The present invention relates to a delami bottle, and more particularly to a delami bottle comprising two layers of inner and outer layers that are detachably laminated.

  As these delamination bottles, for example, synthetic resin layers of different materials are formed on the inside and outside of the bottle, and the quality of the stored items is improved by the difference in the materials of the inner and outer layers (for example, Patent Document 1). reference).

  These bottles are used, for example, when a pump is attached to the mouth and neck to pump out the stored liquid, or a discharge stopper is attached to the mouth and neck and the body is squeezed to discharge the discharge stopper. It is generally used as discharged from the outlet, and the inner layer peels and shrinks from the outer layer as the stored liquid decreases, so that the stored liquid can be prevented from contacting the air as much as possible. It can be particularly preferably used for the handling of the stored liquid.

  In addition, although these bottles have releasability between the inner and outer layers as described above, due to various requirements such as the materials of the inner and outer layers and the mutual thickness, the inner layer is surely peeled off as the stored liquid decreases. Not limited to this, there may be a case where a poorly peeled portion is generated, and there is a possibility that the outer layer is deformed accordingly. Therefore, after the bottle is manufactured, a method of filling the liquid after peeling the inner layer in advance is also employed. For example, pressurized air is introduced from an outside air inlet provided in the outer layer, the inner layer is peeled from the outer layer in advance, the inside of the bottle is pressurized again, and the inner layer is returned to a substantially original shape, and then the liquid is filled.

  On the other hand, this type of bottle is generally often formed by a blow molding method. In this case, there is a so-called pinch-off in which the parison is eaten off and sealed at the bottom of the bottle. Since both the inner and outer layers are exposed in this pinch-off, there may be slight peeling, that is, so-called cracking, in the inner and outer layers at the time of manufacture, and this becomes more prominent when the inner layer is preliminarily peeled off. Therefore, the bottle in such a situation may cause inconvenience such as water entering from the pinch-off portion when used in a water field.

In consideration of such points, there has also been proposed a structure that reliably prevents water and the like from entering from the pinch-off portion by heat-sealing the pinch-off opening of the outer layer (see, for example, Patent Document 2).
JP 2001-001389 A Japanese Patent Laid-Open No. 08-175568

  Since the pinch-off portion of the bottle is reliably closed, the above inconvenience can be solved, but the process of heat-sealing the pinch-off increases. The present invention has been made in consideration of such points, and can prevent the above-described intrusion of water without complicating the manufacturing process, has a high buckling resistance, and can be manufactured. We propose an easy and excellent Delami bottle.

The first means is configured as follows. In other words, the bottle is a delamination bottle having a mouth-and-neck portion 3 standing on the trunk portion 2, an inner layer a having an easily peelable inner layer a and an outer layer b having an outside air inlet 5, and having a pinch-off 4 on the bottom. Thus, a deformed portion A comprising an annular recessed portion 6 and a rib 7 bulging and formed in a gap formed by the recessed portion and controlling the releasability between the layers is provided at the lower portion of the body portion 2 .

The second means is configured as follows. That is, at the first unit, with each rib 7 is formed on the four corners of the recessed portion 6, to name a flat surface at least one side of each rib 7 is parallel to each other.

The third means was configured as follows. That is, the adhesive layer c is vertically provided between the inner layer a and the outer layer b in either the first means or the second means .

The fourth means is configured as follows. In other words, the bottle is a delamination bottle having a mouth-and-neck portion 3 standing on the trunk portion 2, an inner layer a having an easily peelable inner layer a and an outer layer b having an outside air inlet 5, and having a pinch-off 4 on the bottom. In addition, a deformed portion A which is formed of an annular bulge 8 at the lower portion of the body 2 and controls the releasability between the layers is provided , and ribs 7 are bulged at the upper and / or lower portions of the bulge 8. Do it .

The fifth means is configured as follows. That is, in the fourth means , the adhesive layer c is provided vertically between the inner layer a and the outer layer b .

  The delamination bottle 1 of the present invention has a combined structure of an annular recessed portion 6 and a rib 7 at the lower portion of the body portion 2, or a combined structure of an annular bulging portion 8 alone or an annular bulging portion 8 and a rib 7. Since the deformed portion A is provided, when the inner layer a is preliminarily peeled by press-fitting an introduced gas such as air from the outside air introduction port 5, the peelability between the inner layer a and the outer layer b of the portion is different from that of the other cylinder. As a result, it is significantly inferior to that of the part 2, and as a result, the remaining part is not peeled off, and even if the bottom pinch-off 4 part is cracked, it prevents the penetration of water and the like into the inner and outer layers. It can be planned. In particular, by providing a deformed portion A composed of the annular recessed portion 6 and the rib 7 and a deformed portion A composed of a combination of the annular bulged portion 8 and the rib 7, a large buckling resistance can be obtained. Combined benefits. In addition, since the deformed portion A is formed by the recessed portion 6 or the bulging portion 8 or the bulging rib 7 even in manufacturing, if a normal mold shape is selected, it can be handled by normal blow molding. There is no inconvenience such as an increase in the number of manufacturing steps compared to conventional products.

  Further, in the case where the adhesive layer c is provided vertically between the inner layer a and the outer layer b, it is connected to the deformed portion A and exhibits more effective hard peelability. In addition, each rib 7 is formed at the four corners in the recessed portion 6 and at least one side surface of each rib forms a flat surface parallel to each other. There is no inconvenience such as occurrence.

  The delami bottle 1 of the present invention has a laminated structure of an easily peelable inner layer a and an outer layer b made of synthetic resin or the like, and has a form in which the mouth and neck portion 3 stands on the trunk portion 2. Moreover, it is formed by blow molding, and as a result, a so-called pinch-off 4 is applied to the bottom at the same time that the parison is eaten out and sealed. In the pinch-off 4, since the bottle of the present invention has a laminated structure, the outer layer b is located on both sides of the inner layer a so as to be separated from each other, as shown in FIG.

  Further, when the delami bottle 1 of the present invention is used with a pump or the like attached to the neck 3, the inner layer a peels and contracts when the internal pressure becomes negative as the stored liquid decreases. At that time, the outer layer b is provided with an outside air inlet 5 for introducing outside air between the inside and outside layers. In the illustrated example, a pair of outside air introduction ports 5 are formed in the mouth and neck portion 3 of the outer layer b in the form of a through hole. However, the present invention is not limited to this and may be formed in the body portion 2, and the form thereof is also a through hole. Not only the form but also a slit shape may be used. However, it is preferable to form the outside air introduction port 5 on the upper part of the outer layer b such as the upper part of the mouth-and-neck part 3 or the trunk part 2 in order to preliminarily peel off the inner layer a described later. Further, as shown in FIG. 2, a belt-like adhesive layer c may be provided vertically between the inner layer a and the outer layer b. By providing this adhesive layer c, the peeling form of the inner layer at the time of pouring the liquid becomes uniform, and the non-peeling action of the deformed portion A described later is more effective. The adhesive layer is not limited to one place, and may be provided in a plurality of places. This configuration of the adhesive layer can be adopted in all of the present invention.

  Moreover, this invention delami bottle 1 is provided with the deformation | transformation part A which governs the releasability of the inner layer a and the outer layer b mutually. The deformed portion A is provided at the lower portion of the body portion 2, and when the inner layer a is preliminarily peeled off, the portion does not peel off. As a result, the body portion 2 below the deformed portion A becomes a non-peeled portion. Even if the internal pressure of the bottle is reduced due to the presence of this non-peeling portion after filling, water or the like is reliably prevented from entering between the inner and outer layers from the pinch-off 4 portion. Preliminary peeling here refers to an operation for peeling the inner layer a from the outer layer b in advance before filling with the liquid and preventing the peeling failure of the inner layer a after filling with the liquid, as described in the section of the background art. Specifically, the inner layer a is preliminarily peeled off from the outer layer b by injecting an introduced gas such as air from the outside air introduction port 5, and then the inner layer a peeled off by injecting a pressure gas such as air into the inner layer a. Return to the original state.

The deformed portion A is a combination of an annular recessed portion and a rib, or an annular bulging portion alone, or a combination of an annular bulging portion and a rib, that is, FIG. 1, FIG. 4, FIG. 8 is a combination of the annular recessed portion 6 and the rib 7, as shown in FIG. 9, the annular bulging portion 8 alone as shown in FIG. 9, or a combination of the annular bulging portion 8 and the rib 7 as shown in FIG. . The recessed portion 6 has a shape in which the wall portion at the bottom of the body portion 2 is recessed inward both in the inner and outer layers, and the bulging portion 8 has the wall portion at the lower portion of the body portion 2 outward in both the inner and outer layers. It has a protruding shape. Further, the rib 7 also is of the form state projecting outward with the inner and outer layers as well. However, in the case of the rib 7, the rib 7 is not necessarily protruded outward from the outer periphery of the trunk portion 2, and for example, is bulged without protruding from the outer periphery of the trunk portion 2 into the gap formed by the recessed portion 6. In some cases. The protruding width, vertical width, length, shape, and the like of the recessed portion 6, the rib 7, and the bulging portion 8 are appropriately selected within a range in which separation by a normal press-in gas during the preliminary separation can be prevented.

1 to 3, a recess 6 annular as deformation section A, an example in which with the rib 7 formed in bulged state in the gap portion to form the recessed portion 6, the lower portion of the body portion 2 In addition, four ribs 7 are formed in a bulging state at equal intervals in the circumferential direction in a gap of an annular recess 6 in which the wall is recessed in a U shape. The tip of each rib 7 is formed along the outer surface of the peripheral wall 2. In other words, it can be said that a plurality of partially recessed portions that are partially recessed in a U-shaped cross section are arranged in a ring shape. Further, the cross-sectional shape of the recessed portion 6 is not limited to the horizontal U shape as shown in the drawing, and various shapes can be adopted regardless of the horizontal V shape or the U shape. Since the partial cylindrical wall has a complicated structure, the remarkably difficult peelability appears, and the presence of the rib 7 increases the buckling resistance.

  4 to 6 are other examples in which the deformed portion A is formed by the annular recessed portion 6 and the rib 7. The deformed portion A shown here similarly has a lower portion of the body portion 2 having a U-shaped cross section. In the example in which the recessed portion 6 that is recessed and four ribs 7 that protrude from the four corners of the recessed portion 6 are provided, the tips of the ribs 7 are substantially the same as the outer periphery of the body portion 2. Are formed so as to bulge and form in the gaps formed. Further, at least one side surface of each rib 7 is configured to be a flat surface parallel to each other, so that the mold can be removed without difficulty. As a result, the inconvenience that the formed ribs 7 cause deformation or the like during molding is prevented.

  FIG. 7 shows still another example in which the deformed portion A is formed by the recessed portion 6 and the rib 7, and has a U-shaped cross section in which the tip protrudes from the outer periphery of the body portion 2 at equal intervals from the inside of the annular recessed portion 6. 4 ribs 7 are provided. FIG. 8 shows still another example, in which ribs 7 having a V-shaped cross-section with the tip projecting from the outer periphery of the body portion 2 are provided at equal intervals from the inside of the similar annular recess 6.

  FIG. 9 shows an example in which the bulging portion 8 is adopted as the deforming portion A, and an annular bulging portion 8 is formed in the lower portion of the body portion 2.

  Further, in the present invention, the rib 7 is bulged at the upper part and / or the lower part of the bulged part 8, thereby improving the buckling resistance similar to the combined structure of the concave part and the rib. . FIG. 10 shows an example in which a plurality of circumferential ribs 7 are formed in the bulged state on the upper and lower portions of the bulged portion 8 as the deformed portion A. As described above, the rib 7 may be formed in a bulged state only on the upper portion of the bulging portion, or may be bulged only on the lower portion, and the shape thereof is not limited to the triangular shape in the side view, but may be various shapes. Can be selected.

  When the bottle 1 configured as described above is used, for example, the preliminary peeling is performed to peel the inner layer a above the deformed portion A from the outer layer b, and then the storage liquid is filled. Then, the stored liquid can be discharged by attaching a known vertical pump or the like, or a discharge plug can be mounted on the mouth and neck portion 3 and the stored liquid can be discharged through the discharge plug by squeezing the body portion 2. . In addition, it is also possible to use a comb-shaped discharge plug provided with comb teeth as the discharge plug.

It is a front view which shows the delami bottle of this invention. Example 1 It is an expanded longitudinal cross-sectional view which follows the XX line of the Example. Example 1 It is an expanded cross-sectional view which follows the YY line of the Example. Example 1 It is a front view which shows the delami bottle of this invention. (Example 2) It is an expanded cross-sectional view which follows the ZZ line of the Example. (Example 2) It is a side view of the same Example. (Example 2) It is an expansion cross-sectional view of the deformation | transformation part part of the delami bottle of this invention. (Example 3) It is an expansion cross-sectional view of the deformation | transformation part part of the delami bottle of this invention. (Example 4) It is a front view which shows the delami bottle of this invention. (Example 5) It is a front view which shows the delami bottle of this invention. (Example 6) It is an expanded longitudinal cross-sectional view of the rib part of the Example. (Example 6)

Explanation of symbols

    2 ... trunk, 3 ... mouth / neck, 4 ... pinch-off, 5 ... outside air inlet, 6 ... recessed portion, 7 ... rib, 8 ... bulge, a ... inner layer, b ... outer layer, c ... adhesive layer, A ... Deformation part

Claims (5)

A delamination bottle having a mouth and neck portion 3 standing on the trunk portion 2 and an inner layer a having an easily peelable inner layer a and an outer layer b having an outside air introduction port 5 and having a pinch-off 4 on the bottom, The lower part of the body part 2 is provided with a deformed part A which is composed of an annular recessed part 6 and a rib 7 bulging and formed in a gap formed by the recessed part, and which controls the releasability between the respective layers. Delami bottle to do. The delamination bottle according to claim 1, wherein the ribs 7 are formed at four corners in the recessed portion 6, and at least one side surface of each rib 7 forms a flat surface parallel to each other. The delamination bottle according to claim 1, wherein an adhesive layer c is provided vertically between the inner layer a and the outer layer b. A delamination bottle having a mouth and neck part 3 standing on the body part 2, an inner layer a having an easily peelable inner layer a and an outer layer b having an outside air inlet 5, and having a pinch-off 4 on the bottom part. A deformed portion A that is formed of an annular bulge portion 8 and that is difficult to peel between the layers is provided at the lower portion of the body portion 2, and ribs 7 are bulged and formed on the upper and / or lower portions of the bulge portion 8. Deramibotoru, characterized in that it consists. The delamination bottle according to claim 4, wherein an adhesive layer c is provided vertically between the inner layer a and the outer layer b.

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