JPH0688601B2 - Synthetic resin tube body - Google Patents

Description

The present invention relates to the structure of a synthetic resin tube body molded in a tube container, and more specifically, it divides the inside into left and right over the entire height range. It is intended to provide a tube body having a simple structure described above.

[Conventional technology]

As a tube container that integrally stores and holds two contents with different physical properties in a state where they are reliably separated from each other, there is a structure in which the inside is divided into two storage spaces. It is possible to obtain an excellent usage pattern in which two contents can be simultaneously and integrally extruded and used by a single pushing operation, and a plurality of contents can be compactly stored and held. It has an excellent effect.

The conventional structure of this type of tube container is one in which two small-diameter storage tube bodies for directly storing contents are inserted in parallel in one outer-frame tube body having a large diameter, or As shown in Japanese Patent Publication No. 50-89478, the inside of a cylindrical tube body is divided into left and right parts by partition sheet pieces.

[Problems to be solved by the invention]

In the case where the storage tube body is inserted and assembled into one outer frame tube body, the content storage volume is small compared to the total volume of the tube container, and one tube container is molded. It is uneconomical because the amount of synthetic resin material required is large, and the body of the tube container is relatively hard to push out the contents smoothly, and the structure of the entire tube container is complicated. In addition, there is a problem that the assembly work becomes troublesome.

Further, in the one disclosed in Japanese Patent Application Laid-Open No. 50-89478, when the bottom portion of the tube body is flatly crushed and sealed, a partition is applied to the width of the flat bottom portion of the tube body. Since the width of the sheet piece is insufficient, it is necessary to accurately position it to achieve flat crushing of the bottom of the tube body, and this bottom sealing operation is troublesome, and for the flat seal part Since the partition sheet pieces are inclined and positioned, the pressing force from the fingertips on the divided storage chambers does not act evenly, and there is a problem that the two contents may be pushed out unevenly. there were.

Therefore, the present invention was devised to solve the above-mentioned problems in the prior art, and a partition sheet piece regardless of the width change of the sleeve caused by flatly crushing the inside of the cylindrical sleeve. It is a technical issue to divide into left and right.

[Means for solving problems]

The means of the present invention has a sleeve made of a synthetic resin in the shape of a cylinder whose outer peripheral surface is printed, transferred, hot stamped, and further coated with a coating, and the inside of the sleeve is divided into right and left over the entire height range. With a partition sheet piece made of synthetic resin welded and fixed in the sleeve, at least one of the sleeve and the partition sheet piece should be a laminated sheet using aluminum foil, and the width of the partition sheet piece should be It should be equal to half the inner circumference.

[Action]

The sleeve may be directly formed into a cylindrical shape by extrusion molding, or may be formed by rolling an aluminum foil laminated sheet to polymerize both side ends and welding the polymerized both side ends by a suitable means to form a cylinder. It may be molded into a shape.

The outer peripheral surface of this sleeve is decorated by an appropriate means before welding the partition sheet piece to the sleeve, but after welding the partition sheet piece to the sleeve,
This is because it is technically difficult to form a decoration on the outer peripheral surface of the sleeve, and the decoration makes it easy to position the welding and assembling position of the partition sheet piece on the sleeve.

The partition sheet piece is cut and formed in a strip shape according to the dimension of the sleeve, and its width is equal to half the inner circumferential length of the sleeve, excluding the width of the welded portion to the sleeve. Therefore, when welding and assembling to a cylindrical sleeve, the width of the partition sheet piece becomes larger than the distance between the welding points on the inner peripheral surface of the sleeve, making it difficult to perform the welding operation of the partition sheet piece to the sleeve. Since the posture of the partition sheet piece after the welding and assembling becomes unstable, it is preferable to make the center portion of the partition sheet piece into a bellows shape or to provide a bent portion in advance.

The partition sheet piece is welded and fixed to the sleeve by inserting and arranging the partition sheet piece into the sleeve in such a manner that the inside of the sleeve is divided into left and right over the entire height range, and contacted with the inner peripheral surface of the sleeve. The welded portions, which are both end portions, are welded and fixed to the inner peripheral surface of the sleeve by high frequency induction welding means.

At this time, since at least one of the sleeve and the partition sheet piece is a laminated sheet using aluminum foil, the aluminum foil portion of the welded portion of the partition sheet piece, or the aluminum foil of the sleeve portion with which the welded portion of the partition sheet piece contacts. The part becomes a heat source.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the case of the embodiment shown in FIG. 1, the sleeve 1 has a cylindrical body formed by directly extruding a polyethylene resin into a cylindrical shape and cutting the cylindrical body into a set unit length. It is formed by applying decoration 2 by means.

In contrast to this sleeve 1, the partition sheet piece 5 has a laminated sheet structure in which a polyethylene resin coating is formed on both sides of an aluminum foil, and its length is slightly longer than that of the sleeve 1 (0.5 to 2.0). It is shorter (about mm).

The length of the partition sheet piece 5 is made smaller than that of the sleeve 1 because the lower end edge of the partition sheet piece 5 projects from the sealed bottom portion when the bottom portion of the tube body is flattened and heat-sealed. This is to prevent it from happening.

The partition sheet piece 5 has a shape in which both end portions thereof are bent to facilitate insertion and assembly into the sleeve 1.
In the case of the embodiment shown in the drawing, the width of both end portions to be bent is
The width of the welded portion 7 required is larger than that required, and the width of the central portion between both bent portions is cylindrical.
It is made to be approximately equal to the diameter of.

This is for facilitating the insertion and assembling of the partition sheet piece 5 into the sleeve 1, but since the welded portion 7 is only the side end portion of this bent portion, the other portions are not welded. This bent portion forms the bent portion 6 for adjusting the width length of the partition sheet piece 5.

In the case of the embodiment shown in FIG. 2, the sleeve 1 has an inner cylinder 3 made of a laminated sheet in which both surfaces of an aluminum foil are coated with a polyethylene resin film, and an outer cylinder 4 which is an extruded product made of polyethylene resin. It is configured by tightly fitting it, and decoration 2
Is applied to the outer peripheral surface of the outer cylinder 4 having no unevenness.

The partition sheet piece 5 is cut and formed from a polyethylene resin sheet, and a bent portion 6 for width adjustment is formed at the center of the width.

In the case of the embodiment shown in FIG. 2, the aluminum foil portion of the inner cylinder 3 portion which the welded portion 7 of the partition sheet piece 5 contacts serves as a heat source for high frequency induction heating.

It should be noted that the partition sheet piece 5 is formed with two welded portions 7, and the sleeve 1 of the two welded portions 7 is formed.
The welding and fixing of the two welding parts 7 may be achieved simultaneously or separately.

Further, when the partition sheet piece 5 is an aluminum foil laminated sheet, it is preferable to cover both side edges of the partition sheet piece 5 with polyethylene resin or the like in advance so that the aluminum foil is not exposed.

〔The invention's effect〕

As is clear from the above description, since the present invention has a simple structure, it can be easily molded and can be inexpensively implemented, and the width of the partition sheet piece is equal to the inner peripheral length of the sleeve. Therefore, when the bottom of the molded tube is flatly crushed, the partition sheet piece can easily follow the increasing width of the sleeve, and thus the flat crushing direction of the bottom of the tube Is not restricted by the partition sheet piece, the molding operation of the seal part is facilitated, and the tube body can be divided into two along the flat crushing direction of the bottom part, so that it is possible to press the tube body with a normal fingertip operation. Therefore, an equal pressing force can be applied to the storage space divided into two, so that accurate extrusion of the contents can always be achieved, and the partition system for the sleeve can be achieved. Since there is no compromising decoration by welding fixation of bets pieces, etc. it is possible to obtain an excellent appearance, exhibiting many excellent effects.

[Brief description of drawings]

FIG. 1 shows an embodiment of a tube body according to the present invention,
It is the whole perspective view. FIG. 2 is an overall perspective view showing another embodiment of the tube body according to the present description. Explanation of reference numerals 1; Sleeve 2; Decoration 3; Inner tube 4; Outer tube 5; Partition sheet piece 6; Bent part 7; Welded part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masao Akutsu, Masao Akutsu, 3-2-6 Oshima, Koto-ku, Tokyo Inside the Yoshino Industrial Co., Ltd. Tokoro Gunma Factory (56) References JP-A-50-89478 (JP, A) Actual development-Sho 58-154142 (JP, U) JP-B-58-42018 (JP, B2)

Claims (1)

[Claims] 1. A sleeve (1) made of a synthetic resin and having a cylindrical shape, the sleeve (1) having a cylindrical shape and provided with decoration (2) on the outer peripheral surface by printing, transfer, hot stamping, coating, etc.
A partition sheet piece (5) made of synthetic resin, which is welded and fixed in the sleeve (1) in a form in which the inside is divided into right and left over the entire height range, and the sleeve (1) and the partition sheet piece (5) ) Is a laminated sheet using aluminum foil, and the width of the partition sheet (5) is
A synthetic resin tube body set to a value equal to half the inner peripheral length of the sleeve (1).