JP3624132B2 - Sealant-containing pouch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sealant-containing pouch.
[0002]
[Prior art]
As a means for applying sealant, a paper tube type relatively rigid container with an inner gas barrier property has been used. However, since a bulky paper tube is generated as waste after use, a gas barrier property has recently been developed. A flexible container called a sausage cart based on a good aluminum foil tends to be used.
[0003]
Conventionally, there has been a container of this type as shown in FIGS. 11 (a) and 11 (b). The former, as shown in Japanese Patent No. 2933259, rounds the base sheet into a cylindrical shape, joins both side edges in a so-called envelope pasting form, ligates one end in the longitudinal direction with a striate body, and in this state the sealant After filling, the other end in the longitudinal direction is ligated with a linear body.
The latter, as shown in Japanese Patent Laid-Open No. 61-227037, folds a flat base sheet and joins both side edges together in a so-called joint-pasted form to make a flat cylinder, with one end in the longitudinal direction thereof The heat seal part is formed by heat fusion while being biased over the required range, and after filling the contents, the other end in the longitudinal direction is heat fused while being pressure biased over the required range to form the heat seal part. Sometimes it is heat sealed by tilting the palm-pasted part to one side.
[0004]
In use, such a container is loaded into a holder B formed of a cylindrical body containing a plunger E as shown in FIG. 12, cut off the top side of the sausage cart, and then an adapter F for forming a discharge port at the opening of the holder. A nozzle was attached to the adapter F and set in the extrusion gun C. The extrusion gun C was operated to discharge the sealant from the sausage cart. After use, the sausage cart was taken out from the holder and discarded.
[0005]
However, in the case of a so-called clip-stop tie with both ends ligated together like the former, outside air may enter through a slight gap in the part where the film overlaps, so that the contents at both ends are dampened by moisture. There was a problem of easy curing. Also, absolutely can vertical wrinkles to refine and focus the sheet at both ends, which had also become a factor to cure the filling remains air in this part.
Since the latter is a heat seal part at both ends, the airtightness is better than the former. However, there is a concern that the adhesion of the portion where the vertical seal portion and the horizontal seal portion at both ends overlap with each other is unstable, and air enters from here to cause the contents to harden.
[0006]
Further, in terms of use, both the former and the latter have a problem that the operation becomes complicated and the workability is not good because the top portion must be cut open with a cutter or a scissors after being loaded into the holder. In addition, the sausage cart is often filled with the contents, so that when the sealant is inflated in the summer or in a high temperature environment, the sealant overflows and opens the hands of the handler. There has been a problem that it becomes dirty or flows into the holder and solidifies, thereby making the holder unusable.
Also, conventional sausage carts tend to generate irregular wrinkles with no directivity when they are loaded into a holder and squeezed, and due to mutual interference, the wrinkles in the vicinity of the bottom become the inner wall surface of the holder and the outer periphery of the plunger. There has also been a problem that the sealant may not be able to be smoothly ejected by entering between the walls and hindering the movement of the plunger.
[0007]
[Problems to be solved by the invention]
The present invention was devised in order to solve the above-mentioned problems, and the object of the present invention is that the storage stability is good and the curing is difficult to occur, and the unsealing and taking out are easy and the workability is excellent. An object of the present invention is to provide a highly practical sealant-containing pouch that can be used by hand drawing as well as by an extrusion gun.
In addition to the above object, another object of the present invention is that the cylindrical wall portion of the pouch is regularly folded during pushing and drawing so that the inner wall surface and the plunger outer peripheral wall can be used without special processing on the inner wall surface as a holder. Another object of the present invention is to provide a sealant-accommodating pouch that can effectively prevent a cylindrical component from entering between the two.
In the present invention, the “sealant” refers to a liquid or similar moisture-curing composition such as an adhesive and a pressure-sensitive adhesive in addition to a caulking agent.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a cylindrical body in which a gas barrier sheet having a thermoplastic synthetic resin film layered on both sides of an aluminum foil is rolled and both ends in the width direction are thermally bonded, and both sides of the aluminum foil a are thermoplastic. It has a peripheral side wall around the top wall made of a gas barrier disc having a synthetic resin film and a thickness of 1.3 times the thickness of the cylindrical body, and the peripheral side wall is the upper part of the cylindrical body the fitted thermoplastic synthetic resin film to each other has half or more of the diameter of the diameter of the top wall and having integrally with canopy integral with the cylindrical body by thermal bonding, an ejection cylinder portion, the A synthetic resin pedestal thermally bonded to the surface of the canopy is provided.
Further, in order to achieve the second object, the present invention has a structure in which permanent muscle groups that are folded along with the extrusion of the filled sealant are arranged in a direction orthogonal to the longitudinal direction of the cylindrical body.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. FIGS. 1 to 3 show a first embodiment of a sealant-containing pouch according to the present invention.
Reference numeral 1 denotes a cylinder having a good gas barrier property. Specifically, a composite film sheet 10 having a predetermined size obtained by laminating thermoplastic synthetic resin films b1 and b2 such as polyethylene and polypropylene on both front and back surfaces of an aluminum foil a having a thickness of 6 to 15 μm is used. As shown in FIG. 3B, the front and back of both side edges are overlapped, and the thermoplastic synthetic resin films b1 and b2 are heated with a hot plate, an ultrasonic device, or the like along the longitudinal direction. The thermal bonding part 100 is formed.
The width of the bonding portion 100 is preferably about 3 to 20 mm in order to provide sufficient bonding strength.
[0010]
Reference numeral 2 denotes a canopy that is covered and joined to the cylindrical body 1 and has a synthetic resin base 3 on the upper surface. The canopy 2 is made of a material having good gas barrier properties. Specifically, thermoplastic synthetic resin films b1, b2 such as polyethylene and polypropylene are formed on both front and back surfaces of an aluminum foil a 'having a relatively larger thickness than that of the cylindrical body 1. It is composed of a disc-shaped composite film sheet 10 ′ laminated with the above.
The canopy 2 is formed by integrally bending the top wall 20 and the side wall 21 by bending the composite film sheet 10 'with a press or the like.
In this embodiment, the side wall 21 has an inner diameter that is substantially the same as the outer diameter of the cylindrical body 1. If the height of the side wall 21 is too deep, a wrinkle will occur. It is preferable to be about 10% of the diameter.
The reason why the thickness t1 of the canopy 2 is made larger than the thickness t of the cylinder 1 is to maintain the strength against the filling pressure of the sealant and to stably support the synthetic resin base 3. . Accordingly, the thickness t1 is required to be at least about 1.3 times the thickness t of the cylindrical body 1, and is usually selected from the range of 20 to 40 μm.
[0011]
The synthetic resin pedestal 3 is made of a thermoplastic synthetic resin molded body, has a thickness of about 0.8 to 1.5 mm, for example, and is integrally formed with a discharge cylinder portion 30 with a discharge port 300 penetrating in the center. ing. In this example, the discharge cylinder portion 30 has a male screw on the outer periphery, but may be a type without a male screw depending on circumstances.
The synthetic resin pedestal 3 preferably has a diameter of ½ or more of the diameter of the top wall 20. This is to stably support the nozzle, and in some cases, without using an adapter, it can be loaded into a cylindrical holder and attached to an extrusion gun so that the sealant can be poured out.
The synthetic resin pedestal 3 is mounted on the top wall 20 of the canopy 2, and the lower surface is bonded to the thermoplastic synthetic resin film b1 by being heated by an ultrasonic device or the like.
[0012]
A canopy 2 having a synthetic resin pedestal 3 is fitted and integrated with the top of the cylindrical body 1. In this embodiment, the side wall 21 is fitted on the cylinder 1 and heated in this state, whereby the thermoplastic synthetic resin film b2 on the side wall 21 and the thermoplastic synthetic resin film b1 on the cylinder wall are thermally bonded. Yes.
[0013]
In this state, the sealant A is filled from the rear opening of the cylinder 1 with the canopy 20 of the synthetic resin base 3 as the end wall. After the fixed amount is filled, the composite film sheet remaining on the rear opening side of the cylindrical body 1 is perfectly overlapped, and is sandwiched between hot plates to be heat-bonded to thermally bond the thermoplastic synthetic resin film b2. Thus, the bottom seal portion 101 is formed.
[0014]
The present invention also includes forming the multiple adhesive portion 101 ′ as shown in FIG. 4A by forming the bottom seal portion 101 and then turning back this portion at least once and heat-pressing the portion. In this way, more complete gas barrier properties are ensured.
When the barrier property may be light, the composite film sheet on the rear opening side of the cylinder 1 may be squeezed and ligated with the clip 102 as shown in FIG.
[0015]
FIG. 5 shows a second embodiment of the present invention. In this embodiment, the outer diameter of the side wall 21 of the canopy 2 is made to a size that substantially matches the inner diameter of the cylinder 1, and the side wall 21 of the canopy 2 is fitted into the top of the cylinder 1 and heated to heat the side wall 21. The plastic synthetic resin film b2 and the thermoplastic synthetic resin film b2 on the cylindrical side wall are thermally bonded and sealed.
If necessary, a doughnut-shaped composite film sheet obtained by laminating a thermoplastic synthetic resin film on both front and back surfaces of an aluminum foil matches the outer diameter of the side wall of the canopy 2 as indicated by phantom lines in FIG. The cover 6 processed so as to have an inner diameter side wall is used in combination, and the cover 6 is externally attached so as to be in contact with the top wall 20 of the canopy 2 and the outer wall surface of the cylinder, and is heated simultaneously with the heating of the side wall 21 of the canopy 2. Thermal bonding may be used. In this way, perfect gas barrier properties can be obtained.
[0016]
FIG. 6 shows a third embodiment of the present invention. In this embodiment, permanent bars 7 are formed at predetermined intervals in a direction perpendicular to the longitudinal direction of the cylinder 1 so that when the container is pushed and squeezed from the rear, it is folded according to the permanent bars 7.
The permanent muscles 7 may be spiral or may be of a parallel type that forms an independent ring. These permanent bars 7 can be made by plastically deforming the composite film sheet by knurling or the like after forming the cylindrical body 1 and before filling.
In addition, it is preferable not to form the permanent muscle 7 in the fitting area | region of the canopy 2 and a bottom seal plan area | region.
[0017]
[Effect of the embodiment]
Next, the usage and operation of the present invention will be described.
The container of the present invention was made of the composite film sheet 10 ′ on the top wall portion of the cylindrical body 1 having the thermal bonding portion 100 along the side edge as shown in FIGS. Since the side wall 21 of the canopy 2 is fitted and thermally bonded and sealed, the sealing gas barrier property is perfect, and the lower end portion of the cylindrical body 1 is also thermally bonded by the bottom sealing portion 101, and thus the sealing gas barrier property. Is perfect. Therefore, the outside air does not enter from the gap and the internal sealant A is not cured by moisture, and the storage stability is good.
[0018]
In use, a sharp member D such as a nozzle tip or a metal pin is inserted into the discharge port 300 of the discharge cylinder portion 30 of the canopy 2 as indicated by a virtual line in FIG. If it carries out like this, the top wall 20 of the canopy 2 which makes the bottom of the discharge outlet 300 will be pierced locally, and the outflow port connected with a cylinder will be created. Even if the outflow port is formed in this way, the discharge port wall serves as a weir against the forward flow of the sealant A, so there is no fear of the sealant flowing out.
In this state, the pouch is inserted into the cylindrical holder B, and the adapter F is fitted into the opening of the cylindrical holder B as shown in FIG. Touch. Therefore, the push disk is inserted into the cylindrical holder B when the nozzle D with the tip cut off is attached to the discharge cylinder 22 of the synthetic resin base 3 and the push rod c1 of the push gun C is advanced. In order to press the plunger E, the sealant A is sequentially discharged from the nozzle D from the outlet 200 through the discharge port 300 of the discharge portion 22. FIG. 8B shows this state.
[0019]
Since the thickness of the canopy 2 is larger than that of the cylindrical body 1 and the synthetic resin pedestal 3 has rigidity, the parallel stability at the time of discharging the sealant is good and can be reliably extruded. The cylindrical holder B is not limited to the one made of synthetic resin, but may be a paper tube.
The formation of the outlet 200 by unsealing is not limited to the above-described period, but the stage in which the pouch is inserted into the cylindrical holder B and the adapter F is attached, or the cylindrical holder B assembled with the adapter is pushed out by the extrusion gun C. There is an advantage that can be performed at a stage after setting.
[0020]
In the present invention, when the diameter of the synthetic resin base 3 is increased, the use of the adapter F can be omitted. FIGS. 9A and 9B show this state. If the pouch is inserted into the cylindrical holder B, and the cylindrical holder B is set on the extrusion gun C, it is made of synthetic resin integrated with the canopy 2. The pedestal 2a comes into contact with the distal end surface portion c of the extrusion gun C. Therefore, the nozzle D with the tip cut off may be attached to the discharge portion 22 of the synthetic resin base 3 and the push rod c1 of the push gun C may be advanced.
Further, in the present invention, the cylindrical body 1 can be directly gripped and manually drawn as shown in FIG. 10 without using an extrusion gun. In this case, if there is anxiety, the cylindrical body 1 may be wrapped in a soft bag or the like. Therefore, this invention can respond | correspond freely to the condition of a field, and the kind of jig | tool with which a field is equipped.
[0021]
When the cylinder 1 is provided with the permanent muscles 7 at regular intervals as in the third embodiment, the canopy 2 has rigidity because it is thicker than the cylinder 1, and the canopy 2 Since the synthetic resin pedestal 3 is heat-bonded and stiffened, when the sealant A is discharged by receiving the push-throttle by moving the plunger, the cylindrical body 1 is fixed to the permanent muscle 7 as shown in FIG. Will be folded regularly along.
For this reason, there is no fear that the flange-shaped cylinder part is sandwiched between the inner wall surface of the holder B and the outer peripheral wall of the plunger, thereby preventing the movement of the plunger, and the sealant can be discharged smoothly.
[0022]
【The invention's effect】
According to claim 1 of the present invention described above, the upper part of the cylindrical body 1 in which both ends in the width direction of the gas barrier sheet 10 in which the thermoplastic synthetic resin films b1 and b2 are layered on both surfaces of the aluminum foil a is thermally bonded, A canopy 2 having a peripheral side wall 21 around a gas barrier disc having thermoplastic synthetic resin films b1 and b2 layered on both sides of an aluminum foil a is fitted to the upper portion of the cylinder 1 with the peripheral side wall 21. Since the thermoplastic synthetic resin films are thermally bonded to each other, complete sealing and gas barrier properties can be realized, storage stability is extremely good, and curing can be surely prevented. Moreover, since the synthetic resin pedestal 3 having the discharge cylinder part 30 is thermally bonded to the canopy 2, the workability is good because the canopy 2 can be easily opened by breaking through the canopy 2 through the discharge cylinder part 30. Moreover, it can be used not only with an extrusion gun but also with a hand-drawer, so that it is possible to obtain excellent effects such as the ability to select a usage pattern with a high degree of freedom according to the situation at the site.
Moreover, since the thickness of the canopy 2 is 1.3 times or more the thickness of the cylindrical body 1 and the synthetic resin pedestal 3 has a diameter that is 1/2 or more of the diameter of the top wall 20, the filling pressure of the sealant The plastic base 3 can be stably supported, the parallel stability when discharging the sealant is good, it can be pushed out reliably, and it is loaded into the cylindrical holder without using an adapter. In addition, it is possible to obtain an excellent effect that the sealant can be poured by being attached to an extrusion gun.
According to the second aspect, since the permanent muscle group 7 that is folded along with the extrusion of the filled sealant is disposed in a direction orthogonal to the longitudinal direction of the cylindrical body 1, the inner wall surface of the holder and the outer peripheral wall of the plunger It is possible to accurately prevent the cylindrical component portion from entering between them, and it is possible to obtain an excellent effect that smooth pushing and drawing can be performed.
[0023]
【The invention's effect】
According to claim 1 of the present invention described above, the upper part of the cylindrical body 1 in which both ends in the width direction of the gas barrier sheet 10 in which the thermoplastic synthetic resin films b1 and b2 are layered on both surfaces of the aluminum foil a is thermally bonded, A canopy 2 having a peripheral side wall 21 around a gas barrier disc having thermoplastic synthetic resin films b1 and b2 layered on both sides of an aluminum foil a is fitted to the upper portion of the cylinder 1 with the peripheral side wall 21. Since the thermoplastic synthetic resin films are thermally bonded to each other, complete sealing and gas barrier properties can be realized, storage stability is extremely good, and curing can be surely prevented. Moreover, since the synthetic resin pedestal 3 having the discharge cylinder part 30 is thermally bonded to the canopy 2, the workability is good because the canopy 2 can be easily opened by breaking through the canopy 2 through the discharge cylinder part 30. Moreover, it can be used not only with an extrusion gun but also with a hand-drawer, so that it is possible to obtain excellent effects such as the ability to select a usage pattern with a high degree of freedom according to the situation at the site.
According to claim 2, since the thickness of the canopy 2 is larger than that of the cylindrical body 1, the strength against the filling pressure of the sealant is excellent, and the synthetic resin base 3 can be stably supported. The parallel stability at the time of discharge is good, and an excellent effect of being able to push out reliably is obtained.
According to the third aspect, since the permanent muscle group 7 that is folded along with the extrusion of the filled sealant is disposed in the direction orthogonal to the longitudinal direction of the cylindrical body 1, the inner wall surface of the holder and the outer peripheral wall of the plunger It is possible to accurately prevent the cylindrical component portion from entering between them, and it is possible to obtain an excellent effect that smooth pushing and drawing can be performed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first embodiment of a sealant-containing pouch according to the present invention.
FIG. 2A is a partially omitted vertical sectional view of the first embodiment, and FIG. 2B is a partially enlarged view of the same.
3A is an exploded perspective view of the first embodiment, and FIG. 3B is a cross-sectional view taken along line XX of FIG. 3A.
FIG. 4A is a side view showing another example of the closing mode of the lower end portion of the cylindrical body in the present invention, and FIG. 4B shows still another example of the closing mode of the lower end portion of the cylindrical body in the present invention. It is a side view.
5A and 5B show a second embodiment of the present invention, in which FIG. 5A is a partial perspective view thereof, and FIG. 5B is a partially enlarged sectional view thereof.
6A and 6B show a third embodiment of the present invention, in which FIG. 6A is a partial front view thereof, FIG. 6B is a partial enlarged sectional view thereof, and FIG. 6C is a partial front view showing a state in use. FIG.
FIG. 7 is a side view showing a state in which the pouch of the present invention is loaded in a holder.
8A is a side view showing a state in which the one shown in FIG. 7 is attached to an extrusion gun and is pressed down, and FIG. 8B is a partially enlarged sectional view of the same.
9A is a side view showing a state in which the pouch of the present invention is loaded in a holder without using an adapter, and is attached to an extrusion gun and is being squeezed, and FIG. 9B is a partially enlarged sectional view of the same. FIG.
FIG. 10 is a perspective view showing a state in which the container of the present invention is used with a hand diaphragm.
11A is a front view showing an example of a conventional sealant container, and FIG. 11B is a front view showing another example.
12 is a side view showing a usage state of the sealant container of FIG. 11 (a). FIG.
[Explanation of symbols]
a aluminum foil b1, b2 thermoplastic synthetic resin film 1 cylinder 2 canopy 3 synthetic resin pedestal 10, 10 'gas barrier sheet 20 top wall 21 peripheral side wall 30 discharge cylinder

Claims (2)

The cylindrical body 1 in which the gas barrier sheet 10 having the thermoplastic synthetic resin films b1 and b2 layered on both surfaces of the aluminum foil a is rolled and both ends in the width direction are thermally bonded, and the thermoplastic synthetic resin film b1 on both surfaces of the aluminum foil a. has a peripheral side wall 21 around the ceiling wall 20 made of gas barrier disc having to and thickness thickness of more than 1.3 times the cylinder body 1 particle course with b2, the tube and the peripheral side wall 21 A canopy 2 fitted to the upper part of the body 1 and thermally bonded together with the thermoplastic synthetic resin film and integrated with the cylindrical body 1, and a discharge cylinder portion 30 are integrally formed, and 1 / of the diameter of the ceiling wall 20. A sealant-containing pouch having a synthetic resin base 3 having a diameter of 2 or more and thermally bonded to the surface of the canopy 2. 2. The sealant-containing pouch according to claim 1, wherein the sealant-containing pouch includes a permanent muscle group that is folded along with extrusion of the filled sealant in a direction orthogonal to the longitudinal direction of the cylindrical body.

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