JP2018058640A - Soft container, and manufacturing apparatus and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soft container in which a tip portion of a body can be blocked with a single member.SOLUTION: A tip portion of a flexible body 10 of a soft container 1 is blocked with a tip sheet member 20. The tip sheet member 20 consists integrally of a peripheral portion 21, a shoulder portion 22 and a top portion 23, and is a film molded self-supporting article 28 of uniform thickness. The cylindrical peripheral portion 21 is joined to the body 10. The shoulder portion 22 is tapered in diameter from the peripheral portion 21 toward the direction of the tip portion. A tip of the shoulder portion 22 is closed with the top portion 23.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a soft container and its production and production method, and more particularly to a soft container suitable for containing a fluid filler such as an adhesive and a paint, its production and production method.

  In general, this type of flexible container has a flexible body and a tip resin member made of an injection molded product of hard resin (see Patent Documents 1 to 3, etc.). The trunk | drum of patent document 1 has become the cylinder shape which rounded the resin sheet. A circular lid-shaped tip resin member is provided at the tip of the body portion. A discharge port is formed at the center of the tip resin member. And the barrier sheet containing an aluminum layer is affixed on the inner surface of the front-end | tip resin member. The barrier sheet has a planar shape along the inner surface of the tip resin member. The discharge port is blocked by the central portion of the barrier sheet.

  The tip resin member in the soft containers of Patent Literatures 2 and 3 integrally has a tapered shoulder portion and a cylindrical mouth and neck portion. A barrier sheet including an aluminum layer is attached to the inner surface of the tip resin member. The barrier sheet has a tapered portion along the inner surface of the shoulder portion and a central planar portion. The mouth-and-neck portion is blocked by the central planar portion extending over the mouth-and-neck portion.

Japanese Patent No. 5713649 JP2013-233982A JP 2011-195144 A

The barrier sheets of the above-mentioned patent documents 1 to 3 are components attached to the tip resin member made of injection-molded resin, and lose support if there is no tip resin member. That is, two members of the tip resin member and the barrier sheet are necessary to close the tip portion of the trunk portion.
An object of this invention is to provide the soft container which can obstruct | occlude the front-end | tip part of a trunk | drum with one sheet member in view of the said situation.

In order to solve the above problems, a flexible container according to the present invention includes a flexible body part and a tip sheet member that closes a tip part of the body part, and the tip sheet member includes:
A cylindrical peripheral side part joined to the body part;
A shoulder portion having a tapered diameter from the peripheral side portion toward the distal end side;
It is comprised by the self-supporting film molded object of the uniform thickness which has integrally the top part which block | closes the front-end | tip part of the said shoulder part.

The term “self-supporting” means that the film molded body constituting the tip sheet member has self-holding property and does not require a support in order to be provided so as to close the tip portion of the body portion. A film molding is a film formed with a certain shape.
Thereby, the front-end | tip part of a trunk | drum can be block | closed only by a front-end | tip sheet | seat member. A support for supporting the leading end sheet member is unnecessary, and the product cost can be reduced.
When discharging the fluid-shaped object, for example, a hole is made at the top. Since the shoulder portion is tapered, the object can be discharged smoothly.
It is preferable that the peripheral side portion has a taper shape with a diameter gradually reduced from the shoulder portion toward the shoulder portion. Thereby, the leading end sheet member can be easily punched out of the molding apparatus.
It is preferable that the top portion has a dome shape that protrudes from the shoulder portion toward the distal end side. Thereby, the pressure | voltage resistance with respect to the internal pressure by a to-be-contained object can be improved. In addition, the design can be improved.
Furthermore, it is preferable that the shoulder portion and the top portion are smoothly continuous. Thereby, it is possible to prevent a large stress from being applied to the continuous portion of the shoulder portion and the top portion.

It is preferable that a bottom sheet member that closes a bottom portion of the trunk portion is further provided, and the bottom sheet member has substantially the same shape as the tip sheet member and can be fitted into the tip sheet member.
After opening a hole in the top, the object to be contained can be discharged by pushing the bottom sheet member toward the tip sheet member instead of the plunger. Along with this, the body part is crushed. Ultimately, the bottom sheet member fits on the inner surface side of the front end sheet member, so that the objects to be contained can be taken out. Therefore, waste of the objects to be contained can be reduced.

A portion of the front end side of the sheet constituting the body portion extends to the front end side from the front end sheet member to form a front end extension portion, and the front end portion of the front end extension portion is sealed. Preferably it is.
As a result, the tip sheet member can be enclosed in the tip extension portion. Therefore, the tip sheet member can be prevented from being touched directly by hand, and bacteria and dust in the air can be prevented from adhering to the tip sheet member, thereby improving hygiene. Even if the tip sheet member has some dents, it is possible to prevent the appearance from deteriorating by covering the tip sheet member with the tip extension portion.

It is preferable that a cylindrical or annular discharge port member is joined to the outer surface of the shoulder portion of the tip sheet member, and the outer diameter of the discharge port member is smaller than the inner diameter of the tip portion of the body portion.
As a result, the discharge port member is supported by the tip sheet member. The discharge port member does not need to reach the trunk. Therefore, the discharge port member can be made smaller than the structure (Patent Documents 1 to 3 and the like) in which the discharge port member serves as a support for the tip sheet member. The material cost can be reduced accordingly.

A manufacturing apparatus according to the present invention is an apparatus for manufacturing the soft container,
A sheet forming part having a convex drawing mold part and drawing the tip sheet member from a blank film;
A cavity is defined between the front end sheet member on the drawing die portion and facing the drawing die portion, and the discharge port member is injected by injecting the material of the discharge port member into the cavity. And a discharge port molding part for molding.
The leading sheet member and the discharge port member can be manufactured by one apparatus, and the manufacturing cost can be reduced.

The manufacturing method according to the present invention is a method of manufacturing the soft container,
A drawing step of drawing the tip sheet member from a blank film by a sheet forming unit,
An injection molding process in which a cavity is defined between the leading sheet member held by the sheet molding part and the discharge port molding part facing the tip side, and the material of the discharge port member is injected into the cavity When,
It is provided with.
The leading sheet member and the discharge port member can be manufactured almost simultaneously, and the manufacturing cost can be reduced.

  According to the present invention, the distal end portion of the body portion of the soft container can be closed with one distal end sheet member.

Fig.1 (a) is sectional drawing which follows the Ia-Ia line | wire of the same figure (b) which shows the soft container which concerns on 1st Embodiment of this invention in the state with which the to-be-contained object was filled. FIG.1 (b) is sectional drawing of the said soft container in alignment with the Ib-Ib line | wire of the same figure (a). FIG.1 (c) is a perspective view of the soft container which is not filled with the to-be-contained object. Fig.2 (a) is sectional drawing which expands and shows the front end side part of a soft container. FIG. 2B is a cross-sectional view further enlarging the circular part IIb of FIG. Fig.3 (a) is sectional drawing which shows the shaping | molding apparatus for the front-end sheet | seat member and discharge port member of a soft container in the set state of the blank film for front-end | tip sheet members. FIG. 3B is a cross-sectional view showing the molding apparatus in a drawing-formed state of the leading sheet member. FIG.3 (c) is sectional drawing which shows a shaping | molding apparatus in the injection molding state of a discharge outlet member. Fig.4 (a) is a front view which shows the step before a high frequency welding of a front-end | tip sheet | seat member and a trunk | drum. FIG.4 (b) is a front view which shows the process of carrying out the high frequency welding of a front-end | tip sheet | seat member and a trunk | drum. FIG. 5 is an enlarged cross-sectional view of the distal end side portion of the soft container according to the second embodiment of the present invention. FIG. 6A is a cross-sectional view showing a state in which a plurality of soft containers according to the second embodiment are bundled. FIG. 6B is an enlarged cross-sectional view of the circle VIb in FIG. Fig.7 (a) is an expanded sectional view of the front end side part of the soft container which concerns on 3rd Embodiment of this invention. FIG. 7B is a plan view of the discharge port member of the soft container of the third embodiment. Fig.8 (a) is sectional drawing which expands and shows the bottom side part of the soft container which concerns on 4th Embodiment of this invention in the state after filling with the to-be-contained object. FIG. 8B is a cross-sectional view further enlarging the circular portion VIIIb of FIG. FIG. 9 is a cross-sectional view showing the distal end portion of the soft container according to the fourth embodiment in a state in which the object to be contained is almost completely drawn out. Fig.10 (a) is sectional drawing which follows the Xa-Xa line | wire of the same figure (b) which shows the soft container which concerns on 5th Embodiment of this invention in the state with which the to-be-contained object was filled. FIG.10 (b) is sectional drawing of the said soft container in alignment with the Xb-Xb line | wire of the same figure (a). Fig.11 (a) is sectional drawing which shows the front end side part of the soft container of the said 5th Embodiment in the state which opens. FIG.11 (b) is sectional drawing which shows the front end side part of the soft container of the said 5th Embodiment in the state at the time of the storage after opening.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<First Embodiment>
1 to 4 show a first embodiment of the present invention. As shown in FIGS. 1A to 1C, the soft container 1 includes a trunk portion 10, a leading sheet member 20, and a discharge port member 30. The to-be-contained thing 9 of the soft container 1 is fluids and viscous bodies, such as an adhesive agent, a coating material, a drink, for example.

The trunk | drum 10 rolls up the sheet | seat 19 for example in the shape of a cylinder, and is enveloped. As shown in FIG.1 (c), the bottom part of the trunk | drum 10 before the to-be-contained object 9 is filled is open | released. The body portion 10 has a tapered shape that is reduced in diameter very gently from the bottom portion toward the tip. The taper angle of the body portion 10 is preferably about 0.1 ° to 0.5 °, more preferably about 0.3 ° with respect to the axis L ₁ of the soft container 1, for example.
As shown in FIG. 1A and FIG. 1B, after the object 9 is filled, the bottom portion of the body portion 10 is closed by heat sealing, and the bottom heat sealing portion 12 is formed.

As shown in FIG. 2B, the sheet 19 constituting the body portion 10 has, for example, a four-layer (multiple-layer) laminate structure. Both the outermost layer 14 and the innermost layer 17 of the trunk portion 10 are made of linear low density polyethylene (LLDPE). As a result, the envelope can be attached. A barrier layer 15 and a resin layer 16 are sandwiched between the outermost layer 14 and the innermost layer 17. Barrier layer 15 is composed of metal such as aluminum, the thickness _{t 15,} for example _t 15 = _7μm~15μm about, preferably _t 15 = 12 [mu] m approximately. Thereby, the gas barrier property can be surely exhibited, and the flexibility of the body portion 10 can be secured. The resin layer 16 is made of polyethylene terephthalate (PET).
In addition, the number of laminated films of the trunk | drum 10, the thickness of each layer, a material, a seal structure, etc. are not necessarily restricted to the above-mentioned thing, It can change suitably.

A distal end sheet member 20 is provided at the distal end portion of the body portion 10. The distal end portion of the body portion 10 is blocked by the distal end sheet member 20. As shown in FIG. 2A, the leading end sheet member 20 integrally includes a peripheral side portion 21, a shoulder portion 22, and a top portion 23. The axis of the front sheet member 20 is disposed on the axis L ₁ of the soft container 1.
The peripheral side portion 21 has a cylindrical shape with a circular cross section. Specifically, the peripheral side portion 21 has a taper shape with a diameter that decreases very gently toward the distal end side (the shoulder portion 22 side). Taper angle theta ₂₁ of the peripheral side portion 21 is aligned with the taper angle of the body portion 10, for example, preferably with respect to the axis _{L 1} of the flexible container 1 is θ ₂₁ = 0.1 ° ~0.5 ° about More preferably, the angle θ ₂₁ is about 0.3 °.
The distal end portion of the body portion 10 is joined to the circumferential side portion 21. In detail, the front-end | tip part of the trunk | drum 10 covers the outer peripheral surface of the circumferential side part 21, and the trunk | drum 10 and the circumferential side part 21 are welded. Here, high-frequency welding is used as the welding method, but it is not necessarily limited to this, and other welding methods such as ultrasonic welding and thermal welding may be used.

A shoulder portion 22 is connected to the distal end portion of the peripheral side portion 21. The shoulder portion 22 has a tapered shape (conical surface shape) that decreases in diameter from the peripheral side portion 21 toward the distal end side (upper side in FIG. 2A). The taper θ ₂₂ angle of the shoulder portion 22 is sufficiently larger than the taper angle θ ₂₁ of the peripheral side portion 21 (θ ₂₂ > θ ₂₁ ), for example, θ ₂₂ = 45 ° to 75 °, preferably about the axis L ₁ . Is about θ ₂₂ = 60 °. That is, the peripheral side portion 21 is a gentle taper portion, and the shoulder portion 22 is a steep taper portion.
The front end portion (center portion) of the shoulder portion 22 is blocked by the top portion 23. The top portion 23 has a dome shape (partial spherical shape) that is smoothly continuous with the shoulder portion 22 and is convex toward the distal end side.

  The leading sheet member 20 is constituted by a film molded body 28. The film molded body 28 has a uniform (uniform) thickness as a whole and is self-supporting. The term “self-supporting” means that the film molded body 28 has a self-holding property and does not require a support such as a hard injection-molded resin to be provided at the distal end portion of the body portion 10. The self-holding property means that the film molded body 28 holds its own shape only by the film molded body 28 and the shape does not collapse by its own weight or some external force.

As shown in FIG.2 (b), the film molded object 28 and by extension, the front-end sheet | seat member 20 have the laminated structure of 3 layers, for example. The outer layer 24 of the tip sheet member 20 is made of linear low density polyethylene (LLDPE), and the inner layer 26 is made of polyethylene terephthalate (PET). The outer layer 24 faces the outside of the soft container 1 and the inner layer 26 faces the inside of the soft container 1. A barrier layer 25 is sandwiched between the outer layer 24 and the inner layer 26. The barrier layer 25 is made of a metal such as aluminum and has a gas barrier property. The thickness t ₂₅ of the barrier layer ₂₅ is larger than the thickness t ₁₅ of the barrier layer 15 (t ₂₅ > t ₁₅ ), for example, t ₂₂ = about 30 μm to 50 μm, preferably about t ₂₂ = 40 μm. Since the barrier layer 25 is relatively thick, the film molded body 28 and the tip sheet member 20 are harder than the body portion 10, and self-holding property or self-supporting property is imparted.
In addition, the number of laminated films of the film molded body 28 and the leading end sheet member 20, the thickness of each layer, the material, and the like are not necessarily limited to the above, and can be modified as appropriate.

As shown in FIG. 2A, the discharge port member 30 is provided on the outer surface of the leading sheet member 20. The material of the discharge port member 30 is a hard resin such as polyethylene (PE) or polypropylene (PP). The discharge port member 30 integrally includes a discharge port portion 31 and a flange portion 32. The discharge port portion 31 has a cylindrical shape, and protrudes from the front end sheet member 20 to the front end side (upper side in FIG. 2A). The axis of the discharge port 31 is coincident with the axis L ₁ of the soft container 1. A male screw part 31 b is formed on the outer peripheral surface of the discharge port part 31. Although not shown, a nozzle or cap with a female screw is attached to the discharge port 31.

A flange 32 is formed at the end of the discharge port 31 on the base end side (the side facing the front end sheet member 20). The flange portion 32 protrudes radially outward from the outer periphery of the discharge port portion 31 and has an annular shape over the entire periphery of the discharge port portion 31. The bottom surface of the collar portion 32 is joined to the outer surface of the shoulder portion 22. As a result, the discharge port member 30 is supported by the leading sheet member 20. That is, the leading end sheet member 20 and the film molded body 28 are not only self-supporting but also strong or rigid enough to support the other member (discharge port member 30).
The outer diameter of the flange portion 32 and thus the outer diameter of the discharge port member 30 is smaller than the inner diameter of the distal end portion of the body portion 10. The discharge port member 30 is not in direct contact with the body portion 10 and is connected to the body portion 10 via the leading sheet member 20.
The opening on the base end side (lower side in FIG. 2A) of the discharge port portion 31 is blocked by the top portion 23. The dome-shaped top portion 23 slightly enters the inside of the discharge port portion 31.

The soft container 1 is manufactured as follows.
<Molding device 50 (soft container manufacturing device)>
As shown in FIG. 3, the leading end sheet member 20 and the discharge port member 30 in the soft container 1 are produced by a molding apparatus 50 (soft container manufacturing apparatus). As shown in FIG. 3A, the molding apparatus 50 includes a first mold 51, a second mold 52, and a third mold 53. These molds 51 to 53 are sequentially arranged from the bottom to the top.
The first mold 51 has a convex drawing mold part 51b. The distal end portion (upper end portion) of the drawing die portion 51 b has a conical surface shape that matches the shape of the distal end sheet member 20. The second mold 52 is formed with a sheet set portion 52c composed of an annular recess. The sheet molding part 50 b is mainly constituted by the first mold 51 and the second mold 52.
The third mold 53 has a conical concave-shaped diaphragm receiving portion 53b and a cylindrical concave-shaped injection mold portion 53d with a thread groove. An injection mold part 53d is provided at the center of the diaphragm receiving part 53b.
A top plate 54 is disposed on the upper part of the third mold 53. An injection nozzle 55 is provided at the center of the top plate 54. The injection nozzle 55 is inserted into a cylindrical concave injection mold part 53d.
The third mold 53 and the injection nozzle 55 mainly constitute a discharge port molding portion 50c. A discharge port forming portion 50c is disposed opposite to the leading end side (upper side) of the sheet forming portion 50b.
The third mold 53 is divided into a plurality of pieces (two left and right in FIG. 3) 63a. The third mold 53 can be opened and closed by the pieces 63a being separated or approached with the injection nozzle 55 as the center.

<Drawing process>
As shown to Fig.3 (a), the disk-shaped blank film 29 (film before shaping | molding) which should become the front sheet | seat member 20 is set to the sheet | seat set part 52c. The second mold 52 and the third mold 53 are brought close to each other, and the outer peripheral portion of the blank film 29 is pressed by the sheet pressing portion 53 c of the third mold 53.
Subsequently, as shown in FIG. 3B, the first mold 51 and the second mold 52 are brought close to each other and clamped. By the mold clamping, the drawing mold part 51b protrudes from the center hole of the sheet setting part 52c and enters the drawing receiving part 53b while drawing and deforming the blank film 29. As a result, the sheet molding unit 50b draws the film molded body 28, and thus the leading sheet member 20, from the blank film 29.
Barrier layer 25 thicker than the barrier layer 15 of the body 10 (preferably theta ₂₅ = 30-50 microns, more preferably about theta ₂₅ = about 40 [mu] m) by leaving the barrier layer 25 that breaks during drawing Can be prevented. Incidentally, when the barrier layer 25 has the same thickness as that of the barrier layer 15 (for example, θ ₂₅ = about 10 μm to 15 μm), it is easily broken at the time of drawing.

<Injection molding process>
At the same time as the leading end sheet member 20 is drawn, a cavity 50d is defined between the leading end sheet member 20 and the inner surface of the injection mold portion 53d above (the front end side) and the outer peripheral surface of the injection nozzle 55. Is done. In addition, the diaphragm receiving portion 53 b hits the shoulder portion 22, and the lower end surface of the injection nozzle 55 hits the top portion 23.
Subsequently, as shown in FIG. 3C, the molten resin 39 (material of the discharge port member 30) is transferred from the injection path 55 a of the injection nozzle 55 to the cavity 50 d while holding the leading sheet member 20 by the sheet forming portion 50 b. Eject. Accordingly, the discharge port member 30 can be injection-molded simultaneously with or immediately after the drawing of the leading end sheet member 20. In addition, simultaneously with the injection molding, the discharge port member 30 can be integrally joined to the leading end sheet member 20 by the adhesiveness of the molten resin 39.
Thereafter, the molds 51 to 53 are separated from each other to release the mold clamping, and the tip sheet member 20 with the discharge port member 30 is removed. Since the peripheral side portion 21 has a gentle taper shape, the leading end sheet member 20 can be easily punched.
Thereby, the leading end sheet member 20 and the discharge port member 30 are produced. The leading sheet member 20 and the discharge port member 30 can be efficiently manufactured by one molding apparatus 50, and the manufacturing cost can be reduced.

Next, as shown in FIG. 4, the separately produced body 10 and the tip sheet member 20 with the discharge port member 30 are joined.
Specifically, as shown in FIG. 4A, a mandrel 61 is prepared as a joining jig. The mandrel 61 has a cylindrical shape and is gradually reduced in diameter toward the tip side (upper side).
The tip sheet member 20 (with the discharge port member 30) is placed on the tip (upper end) of the mandrel 61.
Next, the body part 10 is put on the outer periphery of the mandrel 61 from above. As a result, the front end portion (upper end portion) of the body portion 10 covers the outer peripheral portion of the peripheral side portion 21. By forming both the body portion 10 and the circumferential side portion 21 in a tapered shape, the body portion 10 can be brought into close contact with the entire circumference of the circumferential side portion 21.
Next, as shown in FIG. 4B, the annular high-frequency welding device 60 is set outside the front end portion of the mandrel 61, and the front end portion of the body portion 10 and the peripheral side portion 21 are high-frequency welded.
Thereafter, the soft container 1 is removed from the mandrel 61.
Thereby, the soft container 1 (the object 9 is not filled) can be produced.

According to the soft container 1, the distal end portion of the body portion 10 can be closed by the distal end sheet member 20 alone. A support for supporting the leading sheet member 20 is not necessary, and the product cost can be reduced.
The flange portion 32 of the discharge port member 30 does not need to reach the body portion 10, and the discharge port member 30 is more than the structure (Patent Documents 1 to 3 and the like) in which the discharge port member 30 serves as a support for the leading end sheet member 20. Can be reduced. The material cost can be reduced accordingly.
The bottom of the soft container 1 that is not filled with the object 9 is open. Another soft container 1 can be inserted into the inside from the bottom opening. Since the trunk portion 10 is slightly tapered, the insertion operation can be facilitated. In addition, a plurality of soft containers 1, 1... Can be compacted by sequentially inserting and bundling them in a row (see FIG. 6A). As a result, the storage space for the plurality of soft containers 1, 1... Can be reduced, and transport and the like can be made efficient.

The object 9 is filled into the soft container 1 from the bottom of the soft container 1. After filling, the bottom of the soft container 1 is heat sealed. Thereby, the soft container 1 is sealed. The barrier layer 15 of the trunk portion 10 and the barrier layer 25 of the tip sheet member 20 can prevent outside air from entering the flexible container 1. Thereby, the quality of the to-be-contained object 9 can be maintained over a long period of time.
Since the shoulder portion 22 and the top portion 23 are smoothly continuous, it is possible to prevent a large stress from being applied to the continuous portion of the shoulder portion 22 and the top portion 23. Moreover, the pressure | voltage resistance with respect to the internal pressure by the to-be-contained object 9 can be improved by making the top part 23 into a dome shape. Furthermore, the design can be improved.

When the object 9 is used, for example, a hole is made in the top 23. A nozzle (not shown) attached to the male screw portion 31b may be sharpened, and the tip of the nozzle may be inserted into the discharge port member 30 and pierced into the top portion 23 to be opened. By setting the thickness of the barrier layer 25 to about 30 to 50 μm, preferably about 40 μm, the opening operation can be prevented from being hindered.
The opened soft container 1 is set on, for example, a discharge gun, and the barrel 10 is crushed in the axial direction by a plunger of the discharge gun. As a result, the object 9 is discharged from the discharge port member 30 through the opening portion of the top portion 23. Since the shoulder portion 22 is tapered, the object 9 can be discharged smoothly.

Next, another embodiment of the present invention will be described. In the following embodiments, the same reference numerals are given to the drawings for the same configurations as those already described, and the description thereof is omitted.
Second Embodiment
FIG. 5 shows a second embodiment of the present invention. As shown in FIG. 5, the discharge port member 30 is not provided in the soft container 1B of 2nd Embodiment. The entire outer surface of the shoulder portion 22 and the top portion 23 of the leading end sheet member 20 faces the outside of the flexible container 1B.
As shown in FIG. 6, in the second embodiment, when another soft container 1B is inserted into the inside from the open part of the bottom (the lower end in FIG. 6A) of the soft container 1B, these soft containers 1B, It can be inserted deeply until the leading end sheet members 20 and 20 of 1B almost overlap each other. Therefore, the plurality of soft containers 1B, 1B,... Can be stored and transported in a more compact state by sequentially inserting and bundling the plurality of soft containers 1B, 1B,.

<Third Embodiment>
FIG. 7 shows a third embodiment of the present invention. As shown in FIG. 7 (b), the tip sheet member 20 of the flexible container 1C of the third embodiment has an annular (ring-shaped) discharge instead of the discharge port member 30 of the first embodiment (FIG. 1). An outlet member 30C is provided. As shown in FIG. 7A, the discharge port member 30 </ b> C is supported by the leading end sheet member 20 by being joined to the outer surface of the shoulder portion 22. The outer diameter of the discharge port member 30 </ b> C is sufficiently smaller than the inner diameter of the distal end portion of the body portion 10. The discharge port member 30 </ b> C is not in direct contact with the body portion 10. Further, the height (the vertical dimension in FIG. 7A) of the discharge port member 30C is sufficiently smaller than the discharge port member 30 of the first embodiment (FIG. 2A). Although illustration is omitted, the nozzle of the discharge gun can be connected to the discharge port member 30C.
The tip sheet member 20 with the discharge port member 30C can be manufactured by the same method as in the first embodiment.

<Fourth embodiment>
8 to 9 show a fourth embodiment of the present invention. As shown to Fig.8 (a), in the soft container 1D of 4th Embodiment, the bottom sheet | seat member 40 is provided in the bottom part of the trunk | drum 10 after the to-be-contained thing 9 is filled. The bottom portion of the body portion 10 is closed by the bottom sheet member 40. The bottom sheet member 40 has substantially the same shape as the tip sheet member 20. That is, the bottom sheet member 40 integrally includes a gently tapered peripheral side portion 41, a steeply tapered shoulder portion 42, and a dome-shaped top portion 43. And the bottom sheet member 40 is comprised by the 2nd film molded object 48. FIG. The second film molded body 48 has a uniform (uniform) thickness as a whole and is self-supporting. Similar to the film molded body 28, the second film molded body 48 can be produced by drawing.
Further, as shown in FIG. 8B, the film molded body 48, and thus the bottom sheet member 40, has the same laminate structure as the tip sheet member 20. That is, the bottom sheet member 40 includes an outer layer 44 made of linear low density polyethylene (LLDPE), an inner layer 46 made of polyethylene terephthalate (PET), and an intermediate barrier layer 45 made of aluminum. The thickness of the barrier layer 45 is the same as that of the barrier layer 25.
In addition, the number of laminated films of the bottom sheet member 40, the thickness of each layer, the material, and the like are not necessarily limited to the above, and can be appropriately modified. Further, the shape and size of the bottom sheet member 40 may be slightly different from those of the tip sheet member 20.

  The bottom sheet member 40 is joined to the bottom portion of the body portion 10. Specifically, the bottom portion of the trunk portion 10 covers the outer peripheral surface of the circumferential side portion 41, and the trunk portion 10 and the circumferential side portion 41 are welded. Here, high-frequency welding is used as the welding method, but it is not necessarily limited to this, and other welding methods such as ultrasonic welding and thermal welding may be used.

  The bottom sheet member 40 is a substitute for the plunger. That is, as shown in FIG. 9, the object 9 can be discharged by making a hole in the top 23 of the leading sheet member 20 and pushing the bottom sheet member 40 in the axial direction toward the leading sheet member 20. . In connection with this, the trunk | drum 10 is crushed. As shown in FIG. 9, finally, the bottom sheet member 40 is fitted into the inner surface side of the front end sheet member 20. Thereby, the to-be-contained object 9 can be taken out completely and the waste of the to-be-contained object 9 can be reduced.

<Fifth Embodiment>
10 and 11 show a fifth embodiment of the present invention. As shown in FIGS. 10 (a) and 10 (b), in the flexible container 1E of the fifth embodiment, the tip side portion (upper portion in the figure) of the sheet 19 constituting the trunk portion 10 is the tip. It extends to the front end side (upper side in the figure) from the sheet member 20 and the discharge port member 30, and constitutes the front end extension portion 11.
A proximal end portion (lower end portion in the figure) of the distal end extending portion 11 is circular along the outer periphery of the distal end sheet member 20 and is continuous with the body portion 10.
The distal end portion (upper end portion in the figure) of the distal end extending portion 11 is sealed by heat sealing by overlapping one side portion and the other side portion in the circumferential direction, thereby forming a sealing portion 13. The internal space 11d of the tip extension portion 11 between the tip sheet member 20 and the sealing portion 13 is sealed.

As shown in FIG. 10A, a semicircular recess 13d is formed on the bottom side (lower side in FIG. 10) of the sealing portion 13. An internal space 11d of the tip extension portion 11 enters the semicircular recess 13d.
A cut 13e is formed near the bottom of one side edge of the sealing portion 13 (left side edge in FIG. 10A).
Furthermore, the sealing part 13 is formed with a hook hole 13f (eyelet). By passing a hook or the like through the hook hole 13f, the soft container 1E can be suspended and stored.

In the soft container 1 </ b> E of the fifth embodiment, the tip sheet member 20 and the discharge port member 30 can be enclosed in the tip extension portion 11. Therefore, when the flexible container 1E is transported, stored, etc., the tip sheet member 20 and the discharge port member 30 should not be directly touched by hand, or bacteria and dust in the air may enter the tip sheet member 20 and the discharge port member 30. It can prevent adhesion and improve hygiene. In particular, it is effective when the object 9 is an item requiring sanitary management such as a food such as a beverage or a chemical solution. Further, it is possible to prevent dust and the like from entering the discharge port member 30 and clogging.
Furthermore, in the soft container 1E, even if the tip sheet member 20 has some dent, covering the tip sheet member 20 with the tip extension portion 11 can prevent the appearance from being impaired.

  As shown in FIG. 11A, when the soft container 1E is used, the sealing portion 13 is cut in the width direction (left and right in the figure) using the notch 13e as a trigger. As a result, the sealing portion 13 on the distal end side from the cut 13e can be excised. The tip extending portion 11 on the body 10 side from the notch 13 is left. In addition, as the cut end 11e crosses the semicircular recess 13d, the internal space 11d of the tip extension 11 is opened through the cut 11e. As shown by a two-dot chain line in FIG. 11A, the base end portion of the nozzle 2 is inserted into the tip extension portion 11 from the cut end 11 e (opening), and the discharge nozzle 2 is attached to the discharge port member 30. . Moreover, the top part 23 of the front-end | tip sheet | seat member 20 is opened (refer FIG.11 (b)). Thereby, the object 9 can be discharged from the nozzle 2.

As shown in FIG. 11 (b), when storing the opened soft container 1 </ b> E, it is preferable to remove the nozzle 2 and close the cut 11 e with the adhesive tape 3. Thereby, it is possible to prevent or suppress the intrusion of air into the soft container 1E, and it is possible to prevent or suppress the object 9 from being deteriorated or altered.
Note that the tip end of the nozzle 2 may be closed by film winding or the like with the nozzle 2 attached.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the top 23 may be flat.
Independence may be ensured by selecting the thickness, material, and the like of the resin layer of the sheet molded body 28.
A plurality of embodiments may be combined with each other. For example, the bottom sheet member 40 of the fourth embodiment (FIGS. 8 to 9) may be applied to the second embodiment (FIGS. 5 to 6) or the third embodiment (FIG. 7). You may apply the front-end | tip extension part 11 of 5th Embodiment (FIG. 10) to 2nd Embodiment (FIGS. 5-6) or 3rd Embodiment (FIG. 7).

  The present invention is applicable, for example, as a discharge gun cartridge for fluids and viscous materials such as adhesives and paints.

1, 1B, 1C, 1D, 1E Soft container 2 Discharge nozzle 3 Adhesive tape 9 Object 10 Body 11 End extension 11d Inside 11e Cut 13 Sealing part 13d Semicircular recess 13e Cut 13f Hook hole 19 Sheet 20 Tip sheet member 21 Peripheral side portion 22 Shoulder portion 23 Top portion 24 Outer layer 28 Film molded body 29 Blank film (film before molding)
30, 30C Discharge port member 39 Molten resin (material of discharge port member)
40 Bottom sheet member 41 Peripheral side portion 42 Shoulder portion 43 Top portion 48 Second film molded body 50 Molding device (soft container manufacturing device)
50b Sheet molding part 50c Discharge port molding part 50d Cavity 51b Drawing part 53d Injection mold part
55 Injection nozzle

Claims (6)

A flexible body, and a front sheet member that closes the front end of the body, the front sheet member,
A cylindrical peripheral side part joined to the body part;
A shoulder portion having a tapered diameter from the peripheral side portion toward the distal end side;
A soft container comprising a self-supporting film molded body having a uniform thickness integrally including a top portion that closes a tip end portion of the shoulder portion.   The bottom sheet member which closes the bottom part of the trunk section is further provided, and the bottom sheet member has substantially the same shape as the front end sheet member and can be fitted into the front end sheet member. Soft container.   A portion of the front end side of the sheet constituting the body portion extends to the front end side from the front end sheet member to form a front end extension portion, and the front end portion of the front end extension portion is sealed. The soft container according to claim 1 or 2, wherein   2. A cylindrical or annular discharge port member is joined to the outer surface of the shoulder portion of the front end sheet member, and the outer diameter of the discharge port member is smaller than the inner diameter of the front end portion of the body portion. The soft container of any one of -3. An apparatus for producing the soft container according to claim 4,
A sheet forming part having a convex drawing mold part and drawing the tip sheet member from a blank film;
A cavity is defined between the front end sheet member on the drawing die portion and facing the drawing die portion, and the discharge port member is injected by injecting the material of the discharge port member into the cavity. An apparatus for producing a soft container, comprising: a discharge port forming part for forming. A method for producing the soft container according to claim 4,
A drawing step of drawing the tip sheet member from a blank film by a sheet forming unit,
An injection molding process in which a cavity is defined between the leading sheet member held by the sheet molding part and the discharge port molding part facing the tip side, and the material of the discharge port member is injected into the cavity When,
A method for producing a soft container, comprising:

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