JPH082111Y2 - Two-chamber tube container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Use of the Invention) The present invention is a two-chamber tube container, that is, a transparent or translucent synthetic resin outer tube having an inner tube having two chambers divided in the vertical direction. The mouth of the chamber is inserted into the mouth of the outer tube to accommodate the two types of contents.
The present invention relates to a container that can be taken out.

(Prior Art) A multi-chamber tube container is known in which one or more inner tubes for accommodating two or more different contents are inserted into an outer tube. For example, Jikkou Sho 49-28
No. 107 discloses at least two interior tubes
A multi-chamber container configured by enclosing it in an outer tube of a ke is disclosed. In Japanese Utility Model Publication No. 58-12743, as an example, one tube is vertically divided into two to form two independent chambers. A tube is shown in which one is an inner cylinder and the other is an outer cylinder.

However, in a conventional two-chamber tube container including such a prior art example, the bottom seal portion of the inner tube that is housed is generally parallel to the bottom seal portion of the outer tube (longitudinal direction of the bottom seal portion). Not only are they parallel to each other, but the inner tube bottom seals are also parallel to each other (hence the inner tube bottom seals are not collinear). The two chambers thus formed are housed in the outer tube in a manner of being dividedly arranged on the front side and the back side of the container.

FIGS. 7 and 8 are schematic views of the forming process of the two-chamber tube container in the above-mentioned known example, respectively 71, 72: 81, 82 are flexible inner tubes accommodated in the longitudinal direction, 75: 85 Shows the flexible outer tube, first the open end of the inner tube 77,78: 87,88
Are respectively pressed in the directions of the arrows and heat-welded to form the respective bottom seal portions 73, 74: or the bottom seal portion 83 in which two pieces are integrated. The bottom seals 73, 74 in FIG. 7 are parallel to each other, as can be seen from the figure, and in some cases all the seals overlap as in FIG. In any case, these inner tubes are inserted into the outer tubes 75 and 85 as they are. Then, the open ends 79, 89 of the outer tube are heat-welded so as to be parallel to the longitudinal direction of the bottom seal portion of the contained inner tube and the longitudinal direction thereof, and the bottom seal portions 76, 86 of the outer tube are formed. It It should be noted that 710, 720: 810, 820 are the mouth portions of the inner tube, and are fitted into the mouth portions 750: 850 of the outer tube. Reference numeral 90 in FIG. 8 is a vertical rib that integrates the two inner tubes 81, 82 at their central portions.

In the two-chamber tube container thus formed, the two chambers formed by the inner tube are the front (front side) and the back (back side) when the bottom side of the outer tube is viewed as the front side. (See, for example, FIG. 9 showing an end face taken along line IX-IX in FIG. 8).

Therefore, for example, if you want to decorate the front (wide) side and make the inner and outer tubes transparent so that the color of the individual contents can be seen through the outer tube and aim for the display effect, make the decoration side the front. Since the individual contents appear to overlap, the transparent colored contents are particularly cloudy, and it is difficult to see at a glance that they are divided into two compartments, so the display effect is lacking. It will be.

In the same way, two inner tubes are colored in different colors, or one inner tube is transparent and the other inner tube is colored so that the color of the inner tube or the color of the contents goes through the outer tube. This also occurs when you try to make the display effect visible so that the seller's aim is not conveyed to the consumer.

Also, when individually sealing the bottom of the inner and outer tubes,
The filling workability becomes poor, and on the other hand, if the bottoms of these three tubes are to be sealed at the same time, the sealing part will heat-weld the six-layer structure.

For example, FIG. 10 shows the open ends 87, 8 of the inner tubes 81, 82 and the outer tube 85 in the two-chamber tube container shown in FIG.
In the same plane, 8 and 89 are heat-welded at the same time from the direction of the arrow to collectively form the three bottom seals 83, 84, and 86. The cross section of the bottom seal portion thus obtained is As shown in FIG. 11 showing the state immediately before heat welding,
Since it has a six-layer structure and the thickness of the seal portion increases, the degree of sealing tends to be poor, and in order to prevent this,
There is a defect that the synthetic resin of the tube material is more likely to deteriorate when the heat welding time is lengthened.

The above is 1 divided into two rooms by one wall
This is also the case when the inner tube of the book is sealed (however, the seal part has a five-layer structure, but there is not much difference).

(Means for Solving Problems) In order to solve the above-mentioned problems, the present invention makes the outer tube from a transparent or semi-transparent synthetic resin, and the two chambers of the inner tube have the outer tube inside the outer tube. The bottom seal portions are arranged in the longitudinal direction, and the respective bottom portions and the bottom portion of the outer tube form one bottom seal portion as a whole by heat welding, and the longitudinal direction of the bottom seal portions of the two chambers of the inner tube. Is on the uniaxial line in the same direction as the longitudinal direction of the bottom seal part of the outer tube, and when the surface of the outer tube at least the bottom side is flat, the two chambers of the inner tube are left and right. (That is, not on the front and back) is divided.

(Operation) The two chambers of the inner tube are arranged in the outer tube in the longitudinal direction of the bottom seal portion of the outer tube, and the respective bottom portions and the bottom portion of the outer tube form one bottom seal portion as a whole by heat welding. As a result, the longitudinal direction of the bottom seal portion of the two chambers of the inner tube is in the same direction as the longitudinal direction of the bottom seal portion of the outer tube, and as a result, the member to be sealed has a four-layer cross section (see FIG. ) The two chambers of the inner tube are
When the surface where at least the bottom side of the outer tube is flat is the front, the arrangement is always left and right, and since the outer tube is transparent or translucent, the inside of the tube is divided into two chambers at first glance. Known to have been done.

(Embodiment) A preferred example of the present invention will be described with reference to FIGS.

FIG. 1 is a front cross-sectional view of the two-chamber tube container of this example.
4 to 4 are cross-sectional end views taken along the lines II-II, III-III, and IV-IV in FIG. 5, FIG. 5 is a cross-sectional view of a portion serving as a bottom seal portion immediately before heat welding, and FIG. FIG. 5 is an explanatory view of forming a unique bottom seal portion in the container of this example.

In the figure, reference numeral 15 is an outer tube made of transparent flexible synthetic resin (polyethylene in this example), and a mouth portion 150 thereof is externally threaded, and a cap 20 is screwed. Reference numeral 21 is a synthetic resin inner plug (polyethylene is used in this example) fitted over the mouth 150.

By the way, in this outer tube 15, two transparent flexible synthetic resin inner tubes (in this example, polyethylene is used like the outer tube) 11 and 12 are provided with their mouth portions 110 and 120, respectively. It is accommodated by being fitted into the part 150.

After filling the two inner tubes 11 and 12 with contents of different colors, the open ends 17 and 18 (Fig. 6) of the two inner tubes 11 and 12 are pressed and heat-welded together with the outer tube open end 19 in the direction of the arrow.
The respective bottom seal portions 13, 14, 16 are simultaneously formed to form one seal portion as a whole.

If the contents filled in the inner tube are vulnerable to ultraviolet rays, etc., the inner tube (1 or 2
(3) may be made of a colored synthetic resin (or a laminated material including a colored resin layer). The outer tube may be colored as long as it can maintain transparency.

Here, what is important is that when the longitudinal directions of the bottom seal portions 13 and 14 are aligned and the bottom side of the outer tube 15 is a flat surface when viewed from the front side, as shown in FIG. That is, the inner tubes 11 and 12 are arranged so as to be divided into left and right.

That is, as well shown in FIG. 5, the line running through the center of the bottom seal portion of the two inner tubes 11, 12 is
As it is, it coincides with the line XX running through the center of the bottom seal portion of the outer tube 15, and the three center lines XX,
Note that, unlike the conventional structure in which Y-Y and Z-Z are formed (Fig. 11), two inner tubes are arranged on the left and right, and the entire seal part has a four-layer structure. It should be.

When forming the bottom seal portion of each tube on the same straight line by simultaneously heat-sealing the open ends of the inner and outer tubes, the outer wall of the inner tube is aligned with the inner wall of the outer tube,
In order to make the inner tube and the outer tube have a unified feeling, the inner circumference of the outer tube may be substantially equal to the outer circumference of the inner tube.

Further, in the above embodiment, polyethylene resin was used as the material for the inner and outer tubes, but the material may be different for the inner and outer tubes, the inner tubes may be different materials, and a multilayer tube may be used. May be. Further, in place of the two inner tubes, one known inner tube divided into two chambers in the vertical direction may be used.

(Effect) The container of the present invention has the following effects.

(B) When the outer tube has a flat surface on at least the bottom side as the front surface (the side with the flat surface on the bottom side is the widest, which is the most noticeable), it is divided into two chambers. The fact that the tube is installed makes it easy to see at a glance, which can enhance the display effect. This is because the outer tube is transparent or translucent, and the inner tubes of the two chambers are arranged on the left and right when viewed from the front.

(B) Since each bottom seal portion of the inner and outer tubes is formed from a four-layer component so that the longitudinal direction thereof is on the same straight line, compared to the conventional six-layer component, Seal stability is improved.

[Brief description of drawings]

FIG. 1 is a front sectional view of a two-chamber tube container according to an embodiment of the present invention, and FIGS. 2, 3 and 4 are cross-sectional end views taken along lines II-II, III-III and IV-IV in FIG. FIG. 6 is a cross-sectional view of a portion which will be a bottom seal portion immediately before heat welding, and FIG. 6 is an explanatory view of forming a unique bottom seal portion in the container of the embodiment of the present invention,
The figure is a schematic explanatory view of the formation process of a conventional two-chamber tube container,
FIG. 9 is a sectional view taken along the line IX-IX in FIG. 8, FIG. 10 is an explanatory view when the bottom seals of the inner and outer tubes are simultaneously formed in the conventional container, and FIG. FIG. 7 is a cross-sectional view of a portion to be a bottom seal portion having a six-layer structure immediately before heat welding that is formed. In the figure, 15 ... Flexible outer tube, 16 ... Outer tube bottom seal part, 11,12 ... Flexible inner tube, 13,14 ... Inner tube bottom seal, XX ... Book The center line of the part that will be the bottom seal part just before heat welding of the devised container.

Claims (1)

[Scope of utility model registration request] 1. A flexible outer tube and a flexible inner tube which is inserted into the outer tube and has two independent chambers, the mouths of which are fitted in the mouths of the outer tube. In a two-chamber tube container including, the outer tube is made of a transparent or translucent synthetic resin, and the two chambers of the inner tube are arranged in the outer tube in the longitudinal direction of the bottom seal portion of the outer tube, The bottom of the outer tube and the bottom of the outer tube form a single bottom sealing part as a whole by heat welding, and the longitudinal direction of the bottom sealing part of the two chambers of the inner tube is the length of the bottom sealing part of the outer tube. The two chambers of the inner tube are divided into left and right parts when the surface of the outer tube that is on the same line as the direction and is flat on at least the bottom side of the outer tube is the front side. Chamber tube Vessel.