JP6054706B2 - Delamination container - Google Patents

Description

  The present invention relates to a laminate peeling container having an outside air introduction hole at the mouth portion of an outer layer body, and in particular, facilitates the introduction of outside air during use and facilitates peeling of the inner layer body and the outer layer body.

  Conventionally, in a delamination container formed by forming a bottle shape from an outer layer body and an inner layer body, after blowing air from an outside air introduction hole formed in the mouth portion of the outer layer body in advance and peeling the inner layer body from the outer layer body The inner layer body is smoothly peeled from the outer layer body during use, that is, when the contents of the container are discharged from the inner layer body, by applying an initial peeling process to return the inner layer body by injecting air from the container mouth. What you do is known.

  However, simply by performing the initial peeling treatment, the inner layer body and the outer layer body are not always peeled smoothly during use. If the inner layer body and the outer layer body are not peeled off, the outside air introduction path will not be formed between the inner layer body and the outer layer body. However, even if the contents can be poured out, there is a risk that the outer surface of the container will be deformed by negative pressure. For this reason, in Patent Document 1, the corresponding portion of the inner layer body is inverted and bulged inward with respect to the outside air introduction hole formed by hollowing out the outer layer body, so that the outside air introduction path is formed at the inner periphery of the outside air introduction hole. I have to.

JP 2006-36250 A

  However, in the technique of Patent Document 1 described above, the inner layer body and the outer layer body are not necessarily peeled smoothly depending on the bottle shape.

  The present invention has been developed in view of the above-mentioned present situation, and facilitates the introduction of outside air during use, facilitates the separation of the inner layer body and the outer layer body, and proposes a delamination container having a large degree of freedom in selecting the bottle shape. The purpose is to do.

The gist of the present invention is as follows.
1. In the delamination container having an outer layer body and an inner layer body having a bottom portion, a body portion and a mouth portion, and having an outside air introduction hole in the mouth portion of the outer layer body,
At least one vertical rib formed in the vertical direction is provided on each body portion of the outer layer body and the inner layer body, and the vertical rib is disposed in a region that extends downward from the outside air introduction hole at a central angle of 90 °. A delamination container characterized by comprising:

2. The delamination according to 1 above, wherein the vertical ribs are arranged in two left and right regions excluding a region having a central angle of less than 60 ° from a region extending downward from the outside air introduction hole at a central angle of 90 °. container.

3. Providing at least four longitudinal ribs;
The region between the pair of vertical ribs communicates with the two left and right regions excluding the region where the central angle is less than 60 ° from the region extending downward from the outside air introduction hole at a central angle of 90 °. The laminated peeling container according to 1 above, wherein

  According to the present invention, by performing the initial peeling process, the vertical ribs of the inner layer body are released from the fitting state with the vertical ribs of the outer layer body in the container body portion, and thereby the outside air introduction path is formed around both the vertical ribs. Can be secured. In addition, since both ribs are arranged in a region that extends downward from the outside air introduction hole at a central angle of 90 °, the outside air introduction path secured in the container body is communicated with the outside air introduction path formed in the container mouth. Can be made. Accordingly, it is possible to smoothly introduce the outside air into the container body during use, to facilitate the peeling of the inner layer body and the outer layer body, and to obtain a laminated peeling container having a high degree of freedom in selecting the bottle shape.

It is a side view which shows the lamination peeling container which concerns on one Embodiment of this invention. (A) shows the AA sectional view of Drawing 1 in the state before an initial exfoliation processing. (B) shows the BB sectional drawing of Drawing 1 in the state before an initial exfoliation processing. (A) shows the AA sectional view of Drawing 1 in the state after an initial exfoliation processing. (B) shows the BB sectional drawing of Drawing 1 in the state after an initial exfoliation processing. It is a side view which shows the lamination peeling container which concerns on other embodiment of this invention. The BB sectional view of Drawing 4 is shown in the state before an initial exfoliation processing. The BB sectional view of FIG. 4 is shown in a state after the initial peeling process.

Hereinafter, with reference to FIGS. 1-3, the lamination peeling container which concerns on one Embodiment of this invention is demonstrated in detail.
FIG. 1 is a side view showing a delamination container according to the present embodiment. Fig.2 (a) shows the AA sectional drawing of FIG. 1 in the state before an initial stage peeling process. FIG. 2B shows the BB cross-sectional view of FIG. 1 in a state before the initial peeling process. Fig.3 (a) shows the AA sectional drawing of FIG. 1 in the state after an initial peeling process. FIG. 3B shows the BB cross-sectional view of FIG. 1 in a state after the initial peeling process.

  A delamination container 1 according to the present embodiment (hereinafter also referred to as a container 1) includes an outer layer body 2 made of polyethylene resin having flexibility and an inner layer body 3 made of nylon resin having flexibility. The contents can be poured out by squeezing the body 5 with a cap (not shown) having a valve attached to the mouth 4. The container 1 is formed by blow-molding a laminated cylindrical parison obtained by coextrusion of the outer layer body 2 and the inner layer body 3 between molds.

  The mouth portion 4 is formed in an annular shape around the axis O and is reduced in diameter from the upper end portion of the trunk portion 5, a cylindrical portion 7 further reduced in diameter from the annular step portion 6, The mouth portion 8 is further reduced in diameter from the cylindrical portion 7. A thread 10 for attaching the above-described cap to the container 1 is formed in the upper region of the cylindrical portion 7. In addition, it may replace with the screw thread 10 and you may make it attach a cap member by providing an undercut. Between the screw thread 10 and the stepped portion 6, outside air introduction holes 11 are formed at two locations facing each other across the axis O. The outside air introduction hole 11 penetrates the outer layer body 2 horizontally toward the axis O and has a circular shape.

  The trunk | drum 5 consists of the upper area | region gradually diameter-expanded toward the downward direction from the upper end part, and the lower area | region which makes a substantially cylindrical shape. In this lower region, the transition portion to the bottom portion 12 is gradually reduced in diameter toward the bottom portion 12.

  In the upper region of the body portion 5, four vertical ribs 13 having a concave cross section are provided at equal intervals on the opposing surface. Each of these eight vertical ribs 13 extends in the up-down direction (that is, along a ridge line forming an external shape when the body portion 5 is viewed from the side). Further, the upper ends 13a and the lower ends 13b of the vertical ribs 13 are arranged at the same height. In addition, although it is preferable that the cross-sectional shape of these vertical ribs 13 is circular arc shape, it is not limited to this. Further, in each of the two outer vertical ribs 13, the angle between the line segment connecting the upper end 13 a and the center of the outside air introduction hole 11 and the axis O in FIG. 1 is 45 °.

  Therefore, at least one vertical rib 13 is arranged in a region extending from the outside air introduction hole 11 at a central angle of 90 ° (45 ° on one side with respect to the axis O in FIG. 1). That is, at least one vertical rib 13 is arranged on the line showing 90 ° in FIG. 1 or an extension line thereof, or at least in a region sandwiched between the left and right lines showing 90 ° and the extension line in FIG. One vertical rib 13 is arranged. Further, each of the two left and right regions excluding the region where the central angle is less than 60 ° (30 ° on one side with respect to the axis O in FIG. 1) from the region extending downward from the outside air introduction hole 11 at the central angle of 90 °. The vertical ribs 13 are arranged. Furthermore, between the two vertical ribs 13 that are paired with each of the two left and right regions excluding the region where the central angle is less than 60 ° from the region extending downward from the outside air introduction hole 11 at the central angle of 90 °. The area is in communication.

  The mouth part 4, the body part 5 and the bottom part 12 of the container 1 having the shape described above are formed by the outer layer body 2 and the inner layer body 3 except for the portion of the outside air introduction hole 11, and these outer layer body 2 and inner layer body. 3 is in close contact with each other immediately after blow molding. Then, the container 1 in this state is subjected to an initial peeling process in which the inner layer body 3 is peeled from the outer layer body 2 in advance to make the peeling during use smooth. Specifically, first, a cylindrical air blowing member (not shown) is inserted into the outside air introduction hole 11 and air is blown to introduce air between the inner layer body 3 and the outer layer body 2, thereby the inner layer. The body 3 is peeled from the outer layer body 2. Next, air is press-fitted from the mouth 4 to inflate the inner layer body 3. At that time, the air introduced between the inner layer body 3 and the outer layer body 2 is discharged from the outside air introduction hole 11.

  At this time, the inner layer body 3 is not completely restored to the original shape because the longitudinal ribs 13 are provided on the body portion 5, and as shown in FIG. 3B, the inner layer body 3 and the outer layer body 2. A gap remains between. That is, when the inner layer body 3 peels off and returns to its original shape, there is a slight displacement in the circumferential direction between the inner layer body 3 and the outer layer body 2, so the longitudinal ribs 13 ′ of the inner layer body 3 The peripheral edge rides on the vertical rib 13 of the outer layer body 2, and as a result, a gap is secured in the peripheral area of the vertical rib 13. In particular, since the gap is the largest in the region between the adjacent vertical ribs 13, the region where the central angle is less than 60 ° from the region extending from the outside air introduction hole 11 with a central angle of 90 ° as in this example. Most preferably, the region between the two vertical ribs 13 that are paired with each other is connected to the left and right two regions excluding, and in this way, the outside air formed in the body portion 5 after the initial peeling process The introduction path (gap) can be most reliably communicated with the outside air introduction path formed in the mouth portion 4.

  Even when such vertical ribs are not disposed, if at least one vertical rib 13 is disposed in a region extending at a central angle of 90 ° downward from the outside air introduction hole 11, the vertical portion of the body portion 5 is removed after the initial peeling process. The outside air introduction path formed in the peripheral region of the rib 13 can be communicated with the outside air introduction path formed in the mouth portion 4. In this case, it is preferable to arrange the vertical ribs 13 in the two left and right regions excluding the region where the central angle is less than 60 ° from the region extending downward from the outside air introduction hole 11 at the central angle of 90 °. By doing so, the outside air introduction path formed in the peripheral region of the vertical rib 13 can be reliably communicated with the outside air introduction path formed in the mouth portion 4. In this case, as in the present embodiment, it is more preferable to separately provide vertical ribs 13 in the region where the central angle is less than 60 °. By doing so, the outside air introduction path can be more reliably communicated. it can.

  Therefore, according to the lamination peeling container 1 which concerns on this embodiment, by performing an initial stage peeling process, the external air introduction path from the external air introduction hole 11 to the trunk | drum 5 can be ensured reliably, As a result, at the time of use Introducing the outside air into the body 5 can be surely smoothed, the inner layer body 3 and the outer layer body 2 can be easily separated, and various bottle shapes can be selected.

Next, with reference to FIGS. 4-6, the lamination peeling container which concerns on other embodiment of this invention is demonstrated in detail.
FIG. 4 is a side view showing the delamination container according to this embodiment. FIG. 5 shows a cross-sectional view taken along the line BB of FIG. 4 in a state before the initial peeling process. FIG. 6 is a cross-sectional view taken along the line BB in FIG. 4 in a state after the initial peeling process.

  The delamination container according to this example has the same configuration as that of the above-described embodiment except that the number of vertical ribs 14 is different. In this example, a total of six vertical ribs 14 are provided, three on each of the opposing surfaces of the body. Each of the two outer vertical ribs 14 has an angle of 30 ° formed by a line segment connecting the upper end 14a and the center of the outside air introduction hole with the axis O in FIG.

  Therefore, at least one vertical rib 14 is arranged in a region extending downward from the outside air introduction hole at a central angle of 90 °. Further, the vertical ribs 14 are disposed in two left and right regions, respectively, excluding a region where the central angle is less than 60 ° from a region extending downward from the outside air introduction hole at a central angle of 90 °.

  Also in the case of this example, as in the case of the above-described embodiment, by providing the vertical ribs 14, when the initial peeling process is performed, the gaps as shown in FIG. Will be secured in the area.

  Therefore, according to the delamination container according to this embodiment, as in the case of the above-described embodiment, by performing the initial peeling process, it is possible to secure an outside air introduction path from the outside air introduction hole to the trunk portion. As a result, it is possible to facilitate the introduction of outside air into the body during use, to facilitate the peeling of the inner layer body and the outer layer body, and to select various bottle shapes.

  The above description is merely an example of the present invention, and various modifications can be made within the scope of the claims. For example, the vertical rib is preferably concave in cross section, but can also be convex in cross section. Moreover, although it is preferable that a vertical rib extends in an up-down direction, it can also be made to incline or extend zigzag. Further, the length of the vertical rib can be adjusted as appropriate. As the contents of the container, liquids such as cosmetics, medicines, shampoos and foods are suitable, but are not limited thereto. Moreover, in the example mentioned above, although demonstrated as what attaches the cap which has a non-return valve to the opening part of a container, it is not restricted to this, For example, you may assemble | attach and use a pump etc. In the above-described example, the inner layer body and the outer layer body of the container are both made of a flexible material, and the body portion is squeezed for use, but the outer layer body is not limited to this. It can be made of a material having rigidity, and only the inner layer body can be used in such a manner that it shrinks as the contents are poured out. Further, as in the above-described example, the container is preferably formed by blow molding an integrally molded product obtained by co-extrusion of the inner layer body and the outer layer body, but is not limited thereto, for example, the inner layer body and the outer layer body. These can also be formed by combining blow molded products, and even in this case, an outside air introduction path from the mouth of the container to the peripheral region of the vertical rib can be secured.

  According to the present invention, the introduction of the outside air into the container body during use is facilitated, the inner layer body and the outer layer body can be easily separated, and the delamination container having a large degree of freedom in selecting the bottle shape can be stably supplied. be able to.

DESCRIPTION OF SYMBOLS 1 Lamination peeling container 2 Outer layer body 3 Inner layer body 4 Mouth part 5 Trunk part 6 Cylindrical step part 7 Cylindrical part 8 Mouth part 10 Thread 11 Outside air introduction hole 12 Bottom part 13, 14 Vertical rib 13a, 14a Upper end (vertical rib)
13b, 14b Lower end (vertical rib)
O axis

Claims (3)

In the delamination container having an outer layer body and an inner layer body having a bottom portion, a body portion and a mouth portion, and having an outside air introduction hole in the mouth portion of the outer layer body,
At least one vertical rib formed in the vertical direction is provided on each body portion of the outer layer body and the inner layer body, and the vertical rib is disposed in a region that extends downward from the outside air introduction hole at a central angle of 90 °. A delamination container characterized by comprising:   2. The vertical rib is disposed in each of two left and right regions excluding a region having a central angle of less than 60 ° from a region extending downward from the outside air introduction hole at a central angle of 90 °. Laminated peeling container. Providing at least four longitudinal ribs;
The region between the pair of vertical ribs communicates with the two left and right regions excluding the region where the central angle is less than 60 ° from the region extending downward from the outside air introduction hole at a central angle of 90 °. The delamination container according to claim 1, wherein

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