JP2001240153A - Sealant-housing pouch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealant housing pouch of a simple structure wherein the cylindrical wall section of the pouch is regularly folded at the time of extrude-drawing, and the cylinder constituent section is effectively prevented from entering a space between the internal wall surface and the outer peripheral wall of a plunger without applying a special process on the internal wall surface as a holder. SOLUTION: A gas barrier sheet wherein on both surface of an aluminum foil, a thermoplastic synthetic resin film is attached as a layer, is rounded. At the same time, both end sections in the width direction are heat-bonded, and both end sections in the longitudinal direction of a cylindrical body are sealed to form a sausage-shape sealant-housing pouch. In such a sealant-housing pouch, parallel permanent stripes, which are folded accompanying the draw- extrusion of a filled sealant, are arranged in the direction being orthogonal to the longitudinal direction of the cylindrical body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a sealant-containing pouch.

[0002]

2. Description of the Related Art Conventionally, as a means for applying a sealant, a paper tube type relatively rigid container having an inner surface made of gas barrier has been used. However, a bulky paper tube is generated as waste after use. Recently, a flexible container (referred to as a sausage cart) based on a film-like aluminum foil having good gas barrier properties has been used.

As a container of this type, conventionally, FIG.
(A) and (b). In the former, the base material sheet is rolled into a tubular shape and both side edges are joined in a so-called envelope pasting form, one end in the longitudinal direction is ligated by a striatum, and after filling the sealant in this state, the other end in the longitudinal direction is striated. Tied together. The latter forms a flat tube by folding the base material sheet and joining both side edges together in a so-called jointed palm form, and heat-fusing it while pressing one end in the longitudinal direction over a required range to form a heat seal portion Then, after filling the contents, the other end in the longitudinal direction is heat-fused while pressure-biasing over a required range to form a heat-sealed portion, and at this time, the jointed palm portion is tilted to one side and heat-sealed. I have.

When using such a sausage cart, one end in the longitudinal direction is cut and opened, and then, the opened cart is inserted into a cylindrical holder B with an unopened end having a plunger E as shown in FIG. Then, an adapter F for forming a discharge port is put on the opening of the cylindrical holder, a nozzle D is attached to the adapter F, and the assembly is set on the extrusion gun C, and the extrusion gun C is operated. Then, the plunger E is extruded toward the nozzle side by an extruding rod or air pressure, and the sausage cart in contact with the plunger E is pressed and squeezed to discharge the sealant in the cart from the nozzle D.

However, since the content acting as a resistance when pressed by the plunger E is a liquid, in a conventional sausage cart, wrinkles having no direction tend to be randomly generated on a film-like aluminum foil. And wrinkles S
6B, as shown in FIG. 6B, is inserted between the peripheral side wall of the plunger E and the inner wall surface of the cylindrical holder, thereby causing a large resistance to the movement of the plunger E, thereby inhibiting the smooth discharge of the sealant. However, troubles such as curing started while in the cart were likely to occur. In order to alleviate the problem caused by the wrinkles, the inner wall surface of the cylindrical holder must have a special structure.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a method in which a cylindrical wall portion of a pouch is regularly folded at the time of pressing and drawing. Accordingly, it is an object of the present invention to provide a sealant accommodating pouch having a simple structure capable of effectively preventing a cylindrical component part from entering between the inner wall surface and the outer peripheral wall of the plunger without performing special processing on the inner wall surface as a holder. . In the present invention, the term "sealant" refers to a liquid or similar moisture-curable composition such as an adhesive or a pressure-sensitive adhesive in addition to a caulking agent.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a gas barrier sheet in which a thermoplastic synthetic resin film is laminated on both sides of an aluminum foil, and both ends in the width direction are thermally bonded to each other. In which both ends in the longitudinal direction are sealed, in which a parallel permanent streak is provided in a direction orthogonal to the longitudinal direction of the cylindrical body, which is folded along with the drawing and extrusion of the filled sealant. .
The permanent streaks may be composed of mutually independent streaks or may be spiral.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIGS. 1A and 1A show a first embodiment of a sealant containing pouch according to the present invention. Reference numeral 1 denotes a flexible cylinder having good gas barrier properties. More specifically, a composite film sheet 10 having a predetermined size in which thermoplastic synthetic resin films b1 and b2 such as polyethylene or polypropylene are laminated on both front and back surfaces of an aluminum foil a having a thickness of 6 to 15 μm is used. 10 is wound in a cylindrical shape, the front and back sides of both side edges are overlapped, and the thermoplastic synthetic resin films b1 and b2 are heated by a hot plate or an ultrasonic device to form a heat bonding portion 100 along the longitudinal direction. I have. The width of the bonding portion 100 is preferably about 3 to 20 mm in order to have sufficient bonding strength.

Reference numerals 2a and 2b denote sealing portions at both ends in the longitudinal direction of the cylindrical body 1. In this embodiment, the composite film sheet is drawn and drawn to form the converging portions 11, 11 and the converging portions 11, 11 are formed. It is ligated with a clip 20 made of metal wire or the like. Sealing parts 2a and 2b are made of sealant A
Is provided after filling.

Reference numeral 3 denotes permanent streaks formed in parallel at predetermined intervals in a direction perpendicular to the longitudinal direction so that the cylindrical wall is regularly folded when the cylindrical body 1 is pressed and squeezed from behind. In this example, the permanent streaks 3 are of a bellows type, each of which forms an independent ring, and are formed by subjecting the composite film sheet 10 to knurling or the like and plastically deforming after forming the cylindrical body 1 and before filling with a sealant. Can be The reason why the thickness of the composite film sheet 10 is set to 6 μm or more is to prevent the composite film sheet 10 from cracking when the permanent streak 3 is processed. The upper limit of thickness is 15μm
The reason for this is that if it is more than this, the flexibility required for the press-drawing is impaired. It is preferable that the permanent streaks 3 are not formed at both ends 1a and 1b in the longitudinal direction of the cylindrical body 1.

FIG. 2 shows a second embodiment of the present invention. In this embodiment, sealing portions 2a, 2a at both ends in the longitudinal direction of the cylindrical body 1 are provided.
The sealant A
After filling a certain amount, the composite film sheet remaining on the rear opening side of the cylindrical body 1 is perfectly overlapped, and is sandwiched between hot plates and heat-pressed to thermally bond the thermoplastic synthetic resin film b2 on the inner surface. By doing so, the heat seal portion 21 is formed. After forming the heat sealing portion 21,
This includes turning the portion at least once, and heat-pressing the portion to form a multiple bonded portion. This way,
More complete gas barrier properties are ensured. The other parts are the same as those of the first embodiment, and therefore, the same parts are denoted by the same reference numerals and description thereof will be omitted.

FIG. 3 shows a third embodiment of the present invention.
This embodiment differs from the first or second embodiment in that the permanent streak 3 of the cylindrical body 1 is a spiral continuous streak. The spiral permanent streak 3 can be obtained by pressing a processing tool having a spiral formed on its surface against the cylindrical body 1.

[0013]

Next, the use and operation of the present invention will be described. In the pouch of the present invention, as shown in FIGS. 1 and 2, a permanent streak 3 parallel to a direction orthogonal to the longitudinal direction of the cylindrical body 1 is provided, and the permanent streak 3 exhibits a function of preventing slippage. Therefore, it is easy to handle on site. In use, similar to a conventional pouch, after cutting and opening the sealing portion 2a at one end in the longitudinal direction, the sealing portion 2b on the unopened side contacts the cylindrical holder B with the plunger E. Load the adapter F into the opening of the cylindrical holder
Then, a nozzle D is attached to the adapter F, and the assembly is set on the extrusion gun C.
Is operated to push the plunger E to the nozzle side by an extrusion rod or air pressure.

As a result, the sealant A is sequentially discharged from the nozzle D. However, since the cylindrical body 1 has a large number of parallel permanent streaks 3 at regular intervals, the sealant A is pushed and squeezed by moving the plunger. When the sealant A is discharged,
The cylindrical body 1 is compressed while being regularly folded according to the permanent streaks 3 as shown in FIG. For this reason, there is no fear that the wrinkled cylindrical portion is interposed between the inner wall surface of the holder B and the outer peripheral wall of the plunger to hinder the movement of the plunger, and the sealant A can be discharged smoothly. In addition, since the cylindrical body 1 is compressed while being regularly folded, it is not necessary to use a special cylindrical holder having a groove or the like formed in the inner wall of the cylindrical body, and it is possible to use a synthetic resin having a smooth inner surface or a paper tube or paper. There is an advantage that a cylindrical holder constituted by a cylinder can be used.

[0015]

According to the present invention described above, the thermoplastic synthetic resin films b1 and b2 are formed on both surfaces of the aluminum foil a.
The cylindrical body 1 in which both ends in the width direction of the gas-barrier sheet 10 on which the sealant is layered is not simply a straight one, but is folded in a direction perpendicular to the longitudinal direction along with the extrusion of the filled sealants. Since the ridges 3 are provided, they are non-slip and easy to handle, and are compressed in a state of being regularly folded in accordance with the permanent ridges 3 during drawing and extrusion. For this reason, an excellent effect is obtained in that the cylindrical component does not enter between the inner wall surface of the holder and the outer peripheral wall of the plunger, and a smooth press-drawing can be performed.

[Brief description of the drawings]

FIG. 1 (a) is a partially cutaway front view showing a first embodiment of a sealant-storing pouch according to the present invention, and FIG. 1 (b) is a partially enlarged sectional view thereof.

FIG. 2 is a partially cutaway front view showing a second embodiment of the sealant-containing pouch of the present invention.

FIG. 3 is a partial front view showing another series of the permanent streaks according to the present invention.

FIG. 4 is a partially cutaway side view showing a use state of the powder of the present invention.

FIG. 5A is a front view showing an example of a conventional sealant container, and FIG. 5B is a front view showing another example.

FIG. 6 (a) is a side view of a conventional sealant container at the stage of starting use, and FIG. 6 (b) is a partially cutaway side view showing the pressed state of the sealant container.

[Explanation of symbols]

 a Aluminum foil b1, b2 Thermoplastic synthetic resin film 1 Cylindrical body 2a, 2b, sealing portion 3 Permanent streak 10 Gas barrier sheet

Claims (3)

[Claims] 1. A gas barrier sheet 10 having thermoplastic synthetic resin films b1 and b2 layered on both sides of an aluminum foil a is rolled up and both ends in the width direction are thermally bonded to seal both ends in the longitudinal direction of the cylindrical body 1. A sealant containing pouch, wherein a parallel permanent streak (3) is folded in a direction perpendicular to the longitudinal direction of the cylindrical body (1) in accordance with drawing and extrusion of the filled sealant (A). 2. Each of the permanent streaks 3 is independent of each other.
A pouch containing a sealant according to 1. 3. The sealant-containing pouch according to claim 1, wherein the permanent streaks 3 are spiral.