JP4374018B2 - container - Google Patents

Description

  The present invention relates to a container used as, for example, a cartridge for a discharge gun or a bucket, and more particularly to a container suitable for containing a liquid fluid adhesive or paint.

In general, a cartridge for a discharge gun closes a cylindrical body (housing portion) having both ends opened, a reinforcing ring fixed to the outer peripheral surface of one end of the cylindrical body, and the other end opening of the cylindrical body. And a bottom. The cylindrical body is constituted by a laminated body formed by bonding resin films, aluminum foil bodies, and the like to each other.
Japanese Patent Laid-Open No. 10-278976

  In the conventional cartridge, the resin film and the aluminum foil constituting the laminated body are fixed and integrated with each other. For this reason, when scratches or other scratches are generated on the outer surface of the cylinder, the scratches may propagate through the resin film or the aluminum foil constituting the laminate to the inner surface of the cylinder, and the cylinder may be broken. .

In order to solve the above-described problem, the present invention includes a housing portion having one end opened made of a flexible film body and a bottom portion provided at the other end portion of the housing portion and closing the other end portion. In the container, the accommodating portion has an inner accommodating portion and an outer accommodating portion each made of a flexible film body, the outer accommodating portion is disposed outside the inner accommodating portion, and the inner accommodating portion It is characterized in that it can move relative to the outer housing part.
In this case, it is desirable that the inner housing portion and the outer housing portion are formed separately.
A laminated film formed by co-extrusion molding of a resin is used as the film body constituting the inner housing part, and a resin film and an aluminum foil bonded to the inside of the resin film as the film body constituting the outer housing part It is desirable to use a laminate having a body.
The inner housing portion and the outer housing portion are formed as cylinders having both ends opened, and the bottom portion is formed separately from the inner housing portion and the outer housing portion, and the inner housing portion and the outer housing portion. A reinforcing ring is fixed to one end of the inner receiving portion, the bottom portion is fixed to the other end of the inner receiving portion and the outer receiving portion, and the reinforcing ring has a fixed shape at one end of the inner receiving portion and the outer receiving portion. Preferably, the bottom portion has a predetermined strength for maintaining the other end portions of the inner housing portion and the outer housing portion in a certain shape.
The inner housing part is constituted by a laminated film formed by co-extrusion of resin, and the outer housing part is constituted by a laminated body having a resin film and an aluminum foil bonded to the inner side of the resin film. Is desirable.
The inner housing portion is formed longer than the outer housing portion, both end portions of the inner housing portion are projected outward from both end portions of the outer housing portion, and an annular projecting portion is formed on an end surface of the bottom portion on the housing portion side. Are formed, and one end portion of the outer housing portion and one end portion of the inner housing portion protruding from the outer housing portion are fixed to the inner circumferential surface of the reinforcing ring, respectively, and the inner circumferential surface of the annular projecting portion of the bottom portion Preferably, the other end of the outer housing and the other end protruding from the outer housing are fixed to each other.
It is desirable that the flexibility of the outer housing portion is set lower than the flexibility of the inner housing portion.
The inner housing portion and the outer housing portion are formed as a cylindrical body having both ends opened, and the bottom portion is formed separately from the inner housing portion and the outer housing portion, and is reinforced to one end portion of the inner housing portion. A ring is fixed, the bottom is fixed to the other end of the inner housing, and the outer housing is movable in the longitudinal direction of the outer housing with respect to the reinforcing ring and the bottom; One end surface and the other end surface of the part are abutted against the reinforcing ring and the bottom part, respectively, and the reinforcing ring has a predetermined flexibility for deforming in the radial direction, and one end part of the inner cylindrical part has a certain shape It is desirable to have a predetermined strength for maintaining the thickness.
The inner housing portion and the outer housing portion are formed as a cylindrical body having both ends opened, and the bottom portion is formed separately from the inner housing portion and the outer housing portion. A lid that closes one end opening of the inner housing portion is fixed, a second reinforcing ring is fixed to the outer peripheral surface of the other end portion of the inner housing portion, and the bottom portion is connected to the inner peripheral surface of the other end portion of the inner housing portion. The lid is fitted in a sealed state so as to be movable in the longitudinal direction of the inner housing part, and the lid is formed with a discharge port for discharging the contents housed inside the inner housing part to the outside. It is desirable that
It is desirable that the flexibility of the outer housing portion is set lower than the flexibility of the inner housing portion.
One end portion of the inner housing portion is protruded from one end portion of the outer housing portion, and one end portion of the inner housing portion protruding from the outer housing portion is fixed to the inner peripheral surface of the lid body, It is desirable that one end of the housing portion is inserted between the outer peripheral surface of the inner housing portion and the inner peripheral surface of the lid so as to be movable in the longitudinal direction of the inner housing portion.

  According to the present invention having the above-described characteristic configuration, since the inner housing portion and the outer housing portion constituting the housing portion can be moved relative to each other, there is a risk that if the outer surface of the outer housing portion is damaged, the outer housing portion may be broken by the scratch. There is only the outer housing part, and the scratch does not progress to the inner housing part. Therefore, it is possible to prevent the inner housing portion from being broken. Therefore, it is possible to prevent the contents stored in the storage portion from leaking to the outside.

It is a front view which abbreviate | omits and shows a part of 1st Embodiment of this invention. It is a vertical front view of the same embodiment. It is sectional drawing which follows the XX line of FIG. It is an enlarged view of the X circle part of FIG. It is an enlarged view of the Y circle part of FIG. It is an expanded sectional view which shows the other example of the bonding method of the both ends of the laminated film which comprises the inner side cylinder part of the embodiment. It is an enlarged view of the Y circle part of FIG. FIG. 3 is an enlarged view of a Z circle portion in FIG. 2. It is a front sectional view showing a second embodiment of the present invention. It is an enlarged view of the X circle part of FIG. It is an enlarged view of the Y circle part of FIG. It is sectional drawing similar to FIG. 10 which shows a part of 3rd Embodiment of this invention. It is sectional drawing similar to FIG. 11 which shows other one part of the same embodiment. It is a front sectional view which omits and shows a part of the fourth embodiment of the present invention. It is an enlarged view of the X circle part of FIG. It is an enlarged view of the Y circle part of FIG.

Explanation of symbols

1 Cartridge (container)
1A container 1B cartridge (container)
2 Tube part (accommodating part)
2A Inner cylinder part (inner housing part)
2B Outer cylinder part (outer housing part)
2a (inner cylinder part) tip part 2b (outer cylinder part) tip part 2c (inner cylinder part) rear end part 2d (outer cylinder part) rear end part 3 reinforcing ring 4 bottom part 4b annular projecting part 5 laminated film (Film body)
6 Laminated body (film body)
8 Lid 8f Discharge port 9 Second reinforcing ring 10 Plunger (bottom)
61 1st layer (resin film)
62 Second layer (aluminum foil

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 and 2 show an embodiment of the present invention. In this embodiment, the present invention is applied to a discharge gun cartridge (container) 1. The cartridge 1 contains a flowable substance such as an epoxy resin adhesive such as polyamide or modified polyamine and its hardener, a reactive acrylic resin adhesive and its hardener. Of course, the present invention is also applicable to a discharge gun cartridge for storing paint, a bucket or a pail can for storing the adhesive or paint as described above.

  The cartridge 1 includes a cylindrical portion (accommodating portion) 2 that is open at both ends, and a reinforcing ring that is fitted and fixed to the outer peripheral surface of one end portion (left end portion in FIGS. 3 and a bottom portion 4 fitted and fixed to the outer peripheral surface of the other end portion (right end portion in FIGS. 1 and 2, hereinafter referred to as a rear end portion) of the cylindrical portion 2.

  The cylinder part 2 is formed in a substantially circular cross section because it is mounted on a discharge gun (not shown). The cylindrical portion 2 is formed in a tapered shape with a small angle (for example, an angle of about 1 °) so that the diameter gradually decreases from the front end side toward the rear end side. The cylinder part 2 may be non-circular in cross section, and may be a straight cylinder having a constant inner and outer diameter. Moreover, it may replace with the cylinder part 2 and may employ | adopt as a accommodating part the bag body which one end opened and the other end closed. When such a bag is used, the reinforcing ring 3 may not be provided, and the bottom 4 is unnecessary if the bottom is formed by closing the bag itself.

  As shown in FIG. 3, the cylinder part 2 has an inner cylinder part (inner accommodation part) 2A and an outer cylinder part (outer accommodation part) 2B. The inner cylinder part 2A and the outer cylinder part 2B are formed separately from each other. The outer cylinder part 2B is disposed outside the inner cylinder part 2A. In other words, the inner cylinder portion 2A is inserted into the outer cylinder portion 2B. The total length of the inner cylindrical portion 2A is longer than the total length of the outer cylindrical portion 2B. As shown in FIG. 7, the distal end portion 2a of the inner cylindrical portion 2A protrudes outward from the distal end portion 2b of the outer cylindrical portion 2B. As shown in FIG. 8, the rear end portion 2c of the inner cylinder portion 2A protrudes outside from the rear end portion 2d of the outer cylinder portion 2B. The outer diameter of the inner cylindrical portion 2A and the inner diameter of the outer cylindrical portion 2B are substantially the same, and the outer peripheral surface of the inner cylindrical portion 2A and the inner peripheral surface of the outer cylindrical portion 2B are shown in FIGS. As shown, almost the entire portion excluding a part in the circumferential direction and both ends in the longitudinal direction are substantially in contact with each other. However, the outer peripheral surface of the inner cylindrical portion 2A and the inner peripheral surface of the outer cylindrical portion 2B are merely in contact with each other, and are not fixed by adhesion or the like, and can be moved relative to each other. That is, the inner cylindrical portion 2A and the outer cylindrical portion 2B are relatively movable in the axial direction, the circumferential direction, and the radial direction of the cylindrical portion 2. Since the inner cylindrical portion 2A and the outer cylindrical portion 2B are relatively movable in the radial direction of the cylindrical portion 2, they may be separated from each other in the radial direction of the cylindrical portion 2. In other words, the inner diameter of the outer cylinder part 2B may be larger than the outer diameter of the inner cylinder part 2A, and the inner cylinder part 2A and the outer cylinder part 2B may be separated from each other in the radial direction.

  The inner cylinder portion 2A is made of a flexible resin film. The inner cylindrical portion 2A may be constituted by a single layer resin film, but in this embodiment, as shown in FIGS. 4 and 5, a laminated film (film body) formed by laminating a plurality of resin films. 5. This prevents the adhesive contained in the cartridge 1 from penetrating the inner cylindrical portion 2A and leaking to the outside as much as possible, and forming the inner cylindrical portion 2A by overlapping both ends of the laminated film 5. In addition, the two end portions of the laminated film 5 can be easily fused. If this point is demonstrated concretely, in this embodiment, the laminated film 5 is comprised by the 1st-5th films 51-55 arrange | positioned sequentially from the inner side of the cylinder part 2 toward the outer side. The first film 51 is made of linear low density polyethylene (L-LDPE), the second film 52 is made of nylon, the third film 53 is made of an ethylene vinyl acetate copolymer, and the fourth film 54 is made. Is made of nylon, and the fifth film 55 is made of linear low density polyethylene which is the same material as the first film 51. Such a resin film configuration of the inner cylindrical portion 2A is merely an example, and other resin film configurations may be adopted as long as they have functions as described below. This is the same also about the outer side cylinder part 2B mentioned later.

  The innermost first film 51 and the outermost fifth film 55 are made of the same resin, as shown in FIGS. 3 and 4, the inner cylindrical portion 2 </ b> A is one end of the laminated film 5 in the circumferential direction. This is because the portion and the other end are overlapped and heat-sealed. That is, when one end and the other end of the laminated film 5 are overlapped, the inner peripheral surface of the first film 51 and the outer peripheral surface of the fifth film 55 come into contact with each other. When the first film 51 and the fifth film 55 are heat-sealed, it can be easily heat-sealed if their materials are the same. In addition, since the linear low density polyethylene constituting the first and fifth films 51 and 55 has a lower melting temperature than the resins constituting the other second to fourth films 52 to 54, the first and fifth films 51, The thermal influence which the 2nd-4th films 52-54 receive with the heat | fever for heat-seal | fusing 55 can be decreased. The resin films constituting the first and fifth films 51 and 55 are not necessarily made of the same material, and may be made of different materials as long as they can be easily heat-sealed with each other. . In this embodiment, since the laminated film 5 has a five-layer structure, the first film 51 that is the innermost layer and the fifth film 55 that is the outermost layer are formed of the same resin film. When the film 5 has a laminated structure other than five layers, the innermost resin film and the outermost resin film may be made of the same material or a material that can be easily heat-sealed with each other. However, as shown in FIG. 6, when the inner cylindrical portion 2A is formed by fusing the inner peripheral surfaces of the laminated film 5 to each other, the material of the resin film constituting the innermost layer of the laminated film 5 is a low temperature. As long as it can be heat-sealed, the resin film constituting the outermost layer can be arbitrarily selected.

  In addition, when the one end part and other end part of the laminated | multilayer film 5 are piled up, a level | step difference will arise among them. This step and the vicinity thereof are in a non-contact state with respect to the outer cylindrical portion 2B. Further, when both ends of the laminated film 5 are fused as shown in FIG. 6, it is desirable to bend the base end of the fused portion along the outer peripheral surface of the inner cylindrical portion 2A.

  The second and fourth films 52 and 54 are made of nylon, and the third film 53 is made of an ethylene vinyl acetate copolymer. These resins have a relatively high permeation-preventing property for the adhesive. The first and fifth films 51 and 55 that constitute at least the innermost layer and the outermost layer of the inner cylindrical portion 2A and the resin that constitutes the first layer 61 and the third layer 63 of the outer cylindrical portion 2B described later are used as an adhesive. This is because it has a high permeation-preventing property. In addition, the second and fourth films 52 and 54 and the third film 53 are made of different resins, thereby exhibiting permeation prevention properties for different adhesives or different components in the same adhesive. Because it can.

  Here, if only the permeation preventive property for different adhesives or different components in the same adhesive is considered, one of the second and fourth films 52 and 54 made of the same material may be omitted. . However, the laminated film 5 is desirably co-extruded for the reasons described later. In the co-extrusion, the first to fifth films 51 to 55 that are in contact with each other are not bonded by an adhesive. It is fixed (fused) directly or via a sealant. When such coextrusion molding is performed, it is desirable that the films adjacent to each other be easily fixed to each other. In this embodiment, nylon has higher adhesion to the linear low density polyethylene constituting the first and fifth films 51 and 55 than the ethylene vinyl acetate copolymer. Therefore, if the fourth film 54 is omitted and the third film 53 is fixed to the fifth film 55, the fixing property thereof is lowered. Therefore, a fourth film 54 made of nylon having high adhesion to both the ethylene vinyl acetate copolymer and the linear low density polyethylene is provided between the third film 53 and the fifth film 55.

  The outer cylindrical portion 2B may be configured by a single-layer structure as long as it is a flexible film-like film body. In this embodiment, as shown in FIGS. It is comprised by the laminated body (film body) 6 which has a layer. The laminated body 6 has a three-layer structure and includes first, second, and third layers 61, 62, and 63 that are sequentially arranged from the inside toward the outside. The laminate 6 may have two layers or four or more layers. However, in any case, it is desirable that at least one layer is made of an aluminum foil. This is for more reliably preventing a slight amount of adhesive or the like that passes through the inner cylinder 2A from leaking out of the cylinder part 2. In this embodiment, the second layer 62 is made of an aluminum foil.

  Aluminum foils are easily torn. Therefore, the first layer 61 and the second layer 63 made of a resin film are bonded and fixed to the inner and outer surfaces of the second layer 62 through adhesive layers 64 and 65, respectively. Accordingly, the second layer 62 made of an aluminum foil is hardly broken and the entire outer cylindrical portion 2B is hardly broken. In addition, as shown in FIGS. 3 and 5, the outer cylindrical portion 2 </ b> B is formed by overlapping and heat-sealing both end portions of the laminate 6. Therefore, as in the case of the inner cylinder portion 2A, the first layer 61 constituting the innermost layer of the laminate 6 and the third layer 62 constituting the outermost layer are formed of resin films made of the same material. In this embodiment, it is made of linear low density polyethylene. However, since the second layer 62 made of an aluminum foil is hardly affected by heat, the resin films constituting the first and third layers 61 and 63 do not necessarily need to be made of a resin having a low melting point. The resin may have a high melting point. The first layer 61 and the third layer 63 may be bonded and fixed with an adhesive, and in that case, the material of the resin film constituting the first and third layers 61 and 63 is arbitrarily selected. be able to.

  In addition, when the one end part and other end part of the laminated body 6 are piled up, a level | step difference will arise among them. This step and its vicinity are in a non-contact state with respect to the inner cylindrical portion 2A. As shown in FIG. 3, it is desirable that the stepped portion formed in the outer cylindrical portion 2B is separated from the stepped portion formed in the inner cylindrical portion 2A in the circumferential direction of the inner cylindrical portion 2A and the outer cylindrical portion 2B. In particular, it is desirable to make them 180 degrees apart. Further, the outer cylindrical portion 2B is configured so that the inner peripheral surfaces of the inner cylindrical portion 2A are connected to each other in the same manner as in the case where the both end portions of the inner cylindrical portion 2A are fixed by the method shown in FIG. It may be fixed.

  When both ends of the laminated film 5 in the circumferential direction of the inner cylindrical portion 2A are overlapped and fused, one end surface of the laminated film 5 is exposed inside the cartridge 1 as shown in FIG. Direct contact with the adhesive contained inside. Therefore, when the first to fifth films 51 to 55 constituting the laminated film 5 are bonded and fixed with an adhesive, the adhesive accommodated in the cartridge 1 bonds the first to fifth films 51 to 55. The adhesive to be melted is inserted between the films 51 to 55. The adhesive that has entered between each of the films 51 to 55 leaks from the other end surface of the laminated film 5 to the outside of the inner cylindrical portion 2A through each of the first to fifth films 51 to 55, or the films 52 to 55 There is a risk of leaking outside from the outer peripheral surface of the inner cylindrical portion 2 </ b> A through the inside of 55. Therefore, in the cartridge 1 of this embodiment, the first to fifth films 51 to 55 constituting the laminated film 5 are joined (fused) directly to each other or via a sealant by coextrusion molding. . Therefore, it is possible to prevent the adhesive contained in the cartridge 1 from leaking outside from the inner cylindrical portion 2A as much as possible. On the other hand, the outer cylindrical portion 2B has the first to third layers 61 to 63 bonded to each other by the adhesive layers 64 and 65, but the amount of adhesive or the like leaking outside the inner cylindrical portion 2A is very small. Therefore, the adhesive layers 64 and 65 are hardly melted. And since the 2nd layer 62 of the outer side cylinder part 2B is comprised with the foil body of aluminum, the adhesive agent which leaked out from the inner side cylinder part 2A permeate | transmits the surrounding wall part of the outer side cylinder part 2B. It is possible to prevent leakage to the outside of the cylindrical portion 2.

  The reinforcing ring 3 is formed by molding a relatively hard resin, and as shown in FIG. The reinforcing ring 3 has a predetermined strength so that its own shape can be maintained. A male screw portion 3a is formed on the outer peripheral surface of the front end portion of the reinforcing ring 3 (left end portion in FIGS. 1, 2 and 7). A lid (not shown) is screwed and fixed to the male screw portion 3a. As a result, the front end opening of the cartridge 1 is closed.

  The inner diameter of the reinforcing ring 3 is set to be substantially the same as the outer diameter of the distal end portion 2b of the outer cylindrical portion 2B. An outer peripheral surface of the distal end portion 2b of the outer cylindrical portion 2B is fixed to an end portion on the proximal end side (right side in FIG. 7) of the inner peripheral surface of the reinforcing ring 3. The outer peripheral surface of the distal end portion 2b of the outer cylindrical portion 2B can be fixed by the ultrasonic fusion method or the like after the reinforcement ring 3 is formed, but in this embodiment, since the reinforcement ring 3 is injection molded, a gold The inner peripheral surface of the reinforcing ring 3 is formed at the same time as the reinforcing ring 3 is molded by mounting the tip 2b of the outer cylinder 2B in advance in a mold (not shown) and filling the mold with molten resin. The distal end portion 2b of the outer cylindrical portion 2B is fused. From the outer cylindrical portion 2B of the inner cylindrical portion 2A to the intermediate portion of the inner peripheral surface of the reinforcing ring 3, that is, the portion of the inner peripheral surface of the reinforcing ring 3 on the tip side from the portion where the outer cylindrical portion 2B is fused. The protruding tip 2a is fixed by fusion. In this case, the distal end portion 2a of the inner cylindrical portion 2A is expanded in advance so that the outer diameter thereof is substantially the same as the outer diameter of the distal end portion 2b of the outer cylindrical portion 2B. It is fused in the same manner as the outer cylindrical portion 2B. Therefore, the distal end portion 2 a of the inner cylindrical portion 2 A and the distal end portion 2 b of the outer cylindrical portion 2 B are simultaneously fused to the inner peripheral surface of the reinforcing ring 3. The distal end portions 2a and 2b of the inner cylindrical portion 2A and the outer cylindrical portion 2B are maintained in a constant shape with a circular cross section by being fused to the reinforcing ring 3.

  When the distal end portion 2a of the inner cylindrical portion 2A is fixed to the inner peripheral surface of the reinforcing ring 3 at a portion closer to the distal end than the portion where the outer cylindrical portion 2B is fixed, the adhesive contained in the cartridge 1 leaks from the cylindrical portion 2. It can be prevented from coming out. That is, if the front end surface of the inner cylindrical portion 2A and the front end surface of the outer cylindrical portion 2B are positioned on the same plane, the outer cylindrical portion 2B is directly on the inner peripheral surface of the reinforcing ring 3, and the inner cylindrical portion 2A is a reinforcing ring. 3, the front end surface of the outer cylinder portion 2 </ b> B directly touches the adhesive contained in the cartridge 1. That is, the front end surface of the laminated body 6 constituting the outer cylindrical portion 2B directly touches the adhesive. Then, the adhesive layers 64 and 65 for bonding the first to third layers 61 to 63 constituting the laminated body 6 are melted. As a result, the adhesive in the cartridge 1 permeates through the outer cylindrical portion 2B and leaks to the outside in the same manner as described above that the adhesive that bonds the films 51 to 55 of the inner cylindrical portion 2A melts. There is a risk that.

  However, when the distal end portion 2a of the inner cylindrical portion 2A is fixed to the inner peripheral surface of the reinforcing ring 3 on the distal end side from the portion where the outer cylindrical portion 2B is fixed, the distal end surface of the outer cylindrical portion 2B is the distal end portion of the inner cylindrical portion 2A. Since it is covered with 2a, the adhesive agent accommodated in the cartridge 1 does not contact the front end surface of the outer cylinder part 2B. Therefore, it is possible to prevent the adhesive layers 64 and 65 of the laminated body 6 constituting the outer cylindrical portion 2B from being melted by the adhesive in the cartridge 1, so that the adhesive accommodated in the cartridge 1 can be prevented. It is possible to prevent leakage through the outside of the cylindrical portion 2.

  The bottom portion 4 is formed by molding a relatively hard resin, and has a predetermined strength so that the shape of the bottom portion 4 can be maintained constant. As shown in FIG. 8, the bottom part 4 has a bottom plate part 4a having a disc shape. An annular projecting portion 4b is formed at the tip of the bottom plate portion 4a. The inner diameter of the annular protrusion 4b is set to be substantially the same as the outer diameter of the rear end 2d of the outer cylinder 2B.

  A rear end portion 2c of the inner cylindrical portion 2A and a rear end portion 2d of the outer cylindrical portion 2B are fused and fixed to the inner peripheral surface of the annular projecting portion 4b. As a result, the rear end openings of the inner cylinder portion 2A and the outer cylinder portion 2B are closed by the bottom portion 4, and the other end opening portion of the cylinder portion 2 is closed by the bottom portion 4. Moreover, the rear end portions 2 c and 2 d of the inner cylinder portion 2 </ b> A and the outer cylinder portion 2 </ b> B are maintained in a constant shape with a circular cross section by the bottom portion 4. The rear end 2d of the outer cylinder 2B is fused to the tip of the inner peripheral surface of the annular protrusion 4b. The rear end portion 2c of the inner cylindrical portion 2A protruding from the rear end portion 2d of the outer cylindrical portion 2B is fused to the base end portion of the inner peripheral surface of the annular protruding portion 4b. Accordingly, the rear end portion 2d of the outer cylindrical portion 2B is covered with the rear end portion 2c of the inner cylindrical portion 2A. Therefore, it is possible to prevent the adhesive from leaking out from the rear end portion 2d of the outer cylindrical portion 2B, as in the case of the front end portion 2b of the outer cylindrical portion 2B.

  In the cartridge 1 having the above-described configuration, the inner cylindrical portion 2A made of the laminated film 5 and the outer cylindrical portion 2B made of the laminated body 6 are formed separately from each other, whereby the inner cylindrical portion 2A and the outer cylindrical portion 2B are relative to each other. Since it is movable, even if a scratch or the like occurs on the outer peripheral surface of the outer cylindrical portion 2B, the scratch does not extend to the inner cylindrical portion 2A. Therefore, even if the outer cylinder part 2B is torn, the inner cylinder part 2A is not torn. Therefore, it is possible to prevent the adhesive or the like stored in the cartridge 1 from leaking from the cylindrical portion 2 to the outside through the damaged portion.

  Next, another embodiment of the present invention will be described. In the following embodiment, only the configuration different from the above embodiment will be described, and the same components as those in the above embodiment will be denoted by the same reference numerals and the description thereof will be omitted.

  FIG. 9 shows a second embodiment of the present invention. In this embodiment, the present invention is applied to a container 1A whose upper end is opened like a bucket. Therefore, the cylinder part 2 is arrange | positioned in the state which orient | assigned the longitudinal direction to the up-down direction. Inner cylinder part 2A and outer cylinder part 2B which constitute cylinder part 2 have fixed inner and outer diameters over the entire length. The inner cylindrical portion 2A and the outer cylindrical portion 2B may be formed in a tapered shape so as to increase in diameter upward.

  The outer cylinder portion 2B is configured by a single layer film body made of a saturated polyester resin such as polyethylene terephthalate (PET). And the thickness (about 0.2 mm) of the outer cylinder part 2B is thicker than the thickness (about 0.1 mm) of the laminated film 5 which comprises the inner cylinder part 2A. As a result, the outer cylinder portion 2B has a lower flexibility than the inner cylinder portion 2A within the range of flexibility. In other words, the outer cylindrical portion 2B has a higher shape retention strength for maintaining its own shape than the inner cylindrical portion 2A. The length of the outer cylindrical portion 2B is equal to the distance between the lower end surface of the reinforcing ring 3 and the upper end surface of the bottom portion 4. Therefore, the upper end surface of the outer cylinder portion 2 </ b> B is in contact with the lower end surface of the reinforcing ring 3, and the lower end surface is in contact with the upper end surface of the bottom portion 4. In this case, the upper and lower end surfaces of the outer cylinder portion 2B are merely in contact with each other without being fixed to the reinforcing ring 3 and the bottom portion 4. Therefore, the outer cylindrical portion 2B is restrained by the reinforcing ring 3 and the bottom portion 4 so as not to move in the vertical direction. Can be moved to.

  The reinforcing ring 3 has moderate flexibility in a range having strength sufficient to maintain not only the inner cylindrical portion 2A but also a constant shape, and can be deformed in the radial direction. The inner diameter of the reinforcing ring 3 is set to be the same as the outer diameter of the inner cylindrical portion 2A. As shown in FIG. 10, the upper end portion of the inner cylindrical portion 2 </ b> A is fixed (fused) to the inner peripheral surface of the reinforcing ring 3 over the entire length thereof. The inner cylindrical portion 2A may be fixed only to the lower portion from the middle portion of the reinforcing ring 3. On the outer peripheral surface of the reinforcing ring 3, two support shaft portions 3b whose axis is directed in the horizontal direction are formed. The two support shaft portions 3b are disposed 180 degrees apart in the circumferential direction of the reinforcing ring 3 and are aligned with each other. Both end portions of a handle 7 having an inverted U shape are rotatably connected to each support shaft portion 3b.

  The inner diameter of the annular projecting portion 4b of the bottom portion 4 is set to be the same as the outer diameter of the lower end portion of the inner cylindrical portion 2A. The lower end portion of the inner cylindrical portion 2A is fixed (fused) to the inner peripheral surface of the annular projecting portion 4b over its entire length. The lower end portion of the inner cylindrical portion 2A may be fixed only to a portion above the intermediate portion of the annular projecting portion 4b.

  According to the container 1A having the above-described configuration, since the outer cylindrical portion 2B having high shape retention strength is used, when the container 1A is placed on the floor surface, the container 1A is not crushed up and down and is in an initial shape. Can be maintained. Moreover, when the adhesive agent and coating material which have fluidity | liquidity are accommodated in the container 1A, it can prevent deform | transforming so that the center part of the cylinder part 2 may bulge outward. Further, when discarding the container 1A, the reinforcement ring 3 is deformed so as to be crushed inward in the radial direction, and the restriction on the outer cylinder part 2B by the reinforcement ring 3 is released, and then the outer cylinder part 2B is moved upward. Then, by pulling out from the inner cylindrical portion 2A and the reinforcing ring 3, the outer cylindrical portion 2B and other portions can be separated and discarded. Moreover, the other portions can be discarded in a state where the volume is reduced by crushing the inner cylindrical portion 2A in the vertical direction. On the other hand, the outer cylinder part 2B can be discarded in a state where the volume is reduced by crushing in the radial direction.

  12 and 13 show a third embodiment of the present invention. This embodiment is a modification of the container 1A, and the configuration differs from the container 1A in the following points. That is, a large-diameter hole 3 c is formed on the inner peripheral surface of the lower end portion of the reinforcing ring 3. The inner diameter of the large-diameter hole portion 3c is set to the same size as the outer diameter of the upper end portion of the outer cylindrical portion 2B. The upper end portion of the outer cylindrical portion 2B is fitted to the inner peripheral surface of the large-diameter hole portion 3c so as to be movable in the vertical direction. The upper end portion of the inner cylindrical portion 2A is fixed to the inner peripheral surface above the large-diameter hole portion 3c of the reinforcing ring 3. As a result, the upper end portion of the outer cylinder portion 2B is inserted between the upper end portion of the inner cylinder portion 2A and the lower end portion of the reinforcing ring 3 so as to be movable in the vertical direction. A large-diameter hole 4c is formed on the inner peripheral surface of the upper end of the annular protrusion 4b of the bottom 4. The inner diameter of the large-diameter hole portion 4c is set to the same size as the outer diameter of the lower end portion of the outer cylindrical portion 2B. The lower end portion of the outer cylindrical portion 2B is fitted to the inner peripheral surface of the large diameter hole portion 4c so as to be movable in the vertical direction. The lower end portion of the inner cylindrical portion 2A is fixed to the inner peripheral surface below the large-diameter hole portion 4c of the annular protruding portion 4b. As a result, the lower end portion of the outer cylinder portion 2B is inserted between the lower end portion of the inner cylinder portion 2A and the annular protrusion 4b so as to be movable in the vertical direction.

  In the container of this embodiment, the upper end portion of the outer cylindrical portion 2B can be extracted from between the inner cylindrical portion 2A and the reinforcing cylindrical portion 3 by deforming the reinforcing ring 3 so as to be crushed in the radial direction. Thereafter, the outer cylindrical portion 2B can be extracted upward from the inner cylindrical portion 2A and the reinforcing ring 3. Therefore, the volume of waste can be reduced as in the above embodiment. In addition, the shape retention strength of the outer cylindrical portion 2B can be improved by the amount of fitting of the upper and lower ends of the outer cylindrical portion 2B to the reinforcing ring 3 and the bottom portion 4, respectively, and thereby to the outside of the inner cylindrical portion 2A. Can be further prevented. However, if the fitting length of the outer cylindrical portion 2B with respect to the reinforcing ring 3 is increased, it becomes difficult to extract the outer cylindrical portion 2B from the reinforcing ring 3. Therefore, it is desirable that the fitting length of the outer cylindrical portion 2B with respect to the reinforcing ring 3 is as short as possible within a range where the shape retaining strength of the outer cylindrical portion 2B can be improved.

  14 to 16 show a fourth embodiment of the present invention. In this embodiment, the present invention is applied to a discharge gun cartridge (container) 1B. Therefore, in this cartridge 1B, the inner cylindrical portion 2A and the outer cylindrical portion 2B constituting the cylindrical portion 2 are slightly so that the diameter decreases toward the distal end side (left side in FIG. 14) as in the first embodiment. Although it is an angle, it is tapered. Similarly to the second embodiment, in order to make the shape retention strength of the outer cylinder portion 2B higher than the shape retention strength of the inner cylinder portion 2A, the outer cylinder portion 2B is thicker than the inner cylinder portion 2A. It is comprised by the film | membrane body which consists of resin. Furthermore, the cartridge 1 </ b> B includes a lid body 8, a second reinforcing ring 9, and a plunger (bottom part) 10.

  The lid 8 is formed by molding a resin by an injection molding method or the like, and has a disc portion 8a as shown in FIG. An annular projecting portion 8b having the same inner diameter as the inner cylindrical portion 2A is formed on the outer peripheral portion of the rear end surface of the disc portion 8a. As shown in FIG. 16, a hole 8c having the same inner diameter as the outer diameter of the front end portion 2a of the inner cylindrical portion 2A is formed on the inner peripheral surface of the annular projecting portion 8b, and further inside the rear end portion of this hole portion 8c. A large-diameter hole portion 8d having the same inner diameter as the outer diameter of the distal end portion 2b of the outer cylindrical portion 2B is formed on the peripheral surface. The tip 2a of the inner cylinder 2A is fixed to the inner peripheral surface of the hole 8c. The distal end portion 2b of the outer cylindrical portion 2B is movably fitted in the large diameter hole portion 8d. As shown in FIG. 14, a mounting portion 8e having a male screw portion on the outer peripheral surface is formed at the center of the distal end surface of the disc portion 8a. A nozzle (not shown) is screwed and fixed to the mounting portion 8e. The mounting portion 8e is formed with a discharge port 8f extending from the front end surface to the rear end surface of the disc portion 8a.

  The second reinforcing ring 9 is formed of resin by an injection molding method or the like. As shown in FIG. 15, a hole portion 9a having the same inner diameter as the outer diameter of the rear end portion 2c of the inner cylindrical portion 2A is formed on the inner peripheral surface of the second reinforcing ring 9, and inside the tip end portion of the hole portion 9a. A large-diameter hole portion 9b having the same inner diameter as the outer diameter of the rear end portion 2d of the outer cylinder portion 2B is formed on the peripheral surface. A rear end 2c of the inner cylindrical portion 2A is fixed to the inner peripheral surface of the hole 9a. The rear end portion 2d of the outer cylindrical portion 2B is movably fitted in the large diameter hole portion 9b. The outer cylinder portion 2B may be fixed to the large diameter hole portion 9b. On the inner peripheral surface of the rear end portion of the second reinforcing ring 9, a guide hole portion 9 c that is reduced in diameter as it goes forward from the rear end surface of the second reinforcing ring 9 is formed.

The plunger 10 is made of resin, and has a small-diameter portion 10a on the front end side and a large-diameter portion 10b on the rear end side as shown in FIGS. The small-diameter portion 10a and the large-diameter portion 10b are both formed in a circular cross section and are arranged concentrically. The outer diameter of the small-diameter portion 10a is slightly smaller than the inner diameter of the distal end portion of the inner cylindrical portion 2A, and the length of the small-diameter portion 10a is slightly longer than the length of the annular projecting portion 8b of the lid body 8. Therefore, as shown in FIG. 16, when the front end surface of the small-diameter portion 10a hits the rear end surface of the disc portion 8a of the lid 8, the large-diameter portion 10b is located slightly rearward from the annular projecting portion 8b. The large diameter portion 10b is slightly smaller in diameter than the inner diameter of the rear end portion of the inner cylindrical portion 2A, and a protrusion 10c having a substantially triangular cross section is formed in an annular shape on the outer peripheral surface thereof. Two protrusions 10c are formed apart from each other in the longitudinal direction of the large diameter portion 10b. One or three or more protrusions 10c may be formed or may not be formed. The outer diameter of the protrusion 10c is slightly larger than the inner diameter of the rear end portion of the inner cylindrical portion 2A. The protrusion 10c is fitted to the inner peripheral surface of the inner cylindrical portion 2A in a state where the inner cylindrical portion 2A and the second reinforcing ring 9 are elastically expanded in diameter. As a result, the rear end portion of the inner cylindrical portion 2A is closed, and as a result, the rear end portion of the cylindrical portion 2 is closed. Therefore, the plunger 10 functions as the bottom of the cartridge 1B. The protrusion 10c is fitted to the inner peripheral surface of the inner cylindrical portion 2A so as to be movable in the longitudinal direction. Therefore, the plunger 10 can move to the distal end side of the inner cylindrical portion 2A, and when moved to the distal end side, the adhesive or the paint housed in the inner cylindrical portion 2A is pushed out from the discharge port 8f.
The plunger 10 is inserted into the second reinforcing ring 9 through the guide hole 9b and further inserted into the inner cylindrical portion 2A.

  In the cartridge 1B configured as described above, when the plunger 10 is moved forward, the protrusion 10c of the cartridge 10 moves forward while expanding the inner cylindrical portion 2A and the outer cylindrical portion 2B. In other words, the protrusion 10c is brought into close contact with the inner peripheral surface of the inner cylindrical portion 2A, thereby moving forward while the space between the inner cylindrical portion 2A and the plunger 10 is sealed. Therefore, the flowable substance such as paint or adhesive contained in the inner cylinder portion 2A is pushed forward as the cartridge 10 advances without leaking from between the cartridge 10 and the inner cylinder portion 2A. It is discharged from the outlet 8f. Then, the small diameter portion 10a moves forward until it abuts against the disc portion 8a of the lid body 8, whereby almost all of the fluid substance accommodated in the inner cylinder portion 2A is discharged to the outside from the discharge port 8f.

  Since the cartridge 10 expands the diameters of the inner cylindrical portion 2A and the outer cylindrical portion 2B when moving forward, the cartridge 10 receives resistance to prevent the cartridge from moving forward. In this case, the inner cylindrical portion 2A does not exhibit a great resistance because the thickness of the laminated film 5 constituting it is thin and has high flexibility, but the outer cylindrical portion 2B is thick and flexible. Since it is low, it exhibits great resistance. The resistance due to the outer cylinder part 2B becomes smaller as the inner diameter of the outer cylinder part 2B moves forward, and increases as the cartridge 10 advances. In particular, when the distal end portion of the outer cylindrical portion 2B is fitted and fixed to the inner peripheral surface of the lid 8, the resistance by the outer cylindrical portion 2B when the cartridge 10 advances to the vicinity of the distal end portion of the inner cylindrical portion 2A is large. Therefore, there is a possibility that the small diameter portion 10a cannot move forward until it comes into contact with the disc portion 8a of the lid body 8. Therefore, in this cartridge 1B, the outer cylinder portion 2B is movably fitted to the lid body 8. In this way, when the cartridge 10 moves to the vicinity of the disc portion 8a, the distal end portion of the outer cylinder portion 2B moves rearward with respect to the lid body 8 as shown in FIG. This is because the tip of the portion 2B can be easily expanded in diameter, and the resistance due to the outer cylindrical portion 2B can be made relatively small. As a result, the cartridge 10 can move until it abuts against the disc portion 8a of the lid 8.

  The container according to the present invention can be used as a bucket or a cartridge for a discharge gun. In particular, it is suitable for use as a container for storing a liquid adhesive or paint having fluidity.

Claims (6)

In a container provided with a housing portion having one end opened made of a flexible film body and a bottom portion provided at the other end portion of the housing portion and closing the other end portion,
The housing portion is formed separately from each other and has an inner housing portion and an outer housing portion made of a flexible film body, and the outer housing portion is disposed outside the inner housing portion, The housing part and the outer housing part are movable relative to each other,
The inner housing portion and the outer housing portion are formed as cylinders having both ends opened, and the bottom portion is formed separately from the inner housing portion and the outer housing portion, and the inner housing portion and the outer housing portion. A reinforcing ring is fixed to one end of the inner receiving portion, the bottom portion is fixed to the other end of the inner receiving portion and the outer receiving portion, and the reinforcing ring has a fixed shape at one end of the inner receiving portion and the outer receiving portion. And having a predetermined strength for maintaining the bottom portion in a fixed shape at the other end of the inner housing portion and the outer housing portion,
The inner housing portion is formed longer than the outer housing portion, both end portions of the inner housing portion are projected outward from both ends of the outer housing portion, and an annular projecting portion is formed on the end surface of the housing portion at the bottom portion One end portion of the outer housing portion and one end portion of the inner housing portion protruding from the outer housing portion are fixed to the inner circumferential surface of the reinforcing ring, respectively, and the inner circumferential surface of the annular projecting portion of the bottom portion is A container characterized in that the other end portion of the outer housing portion and the other end portion protruding from the outer housing portion are fixed to each other.   A laminated film formed by co-extrusion molding of a resin is used as the film body constituting the inner housing part, and a resin film and an aluminum foil bonded to the inside of the resin film as the film body constituting the outer housing part The container according to claim 1, wherein a laminate having a body is used. In a container provided with a housing portion having one end opened made of a flexible film body and a bottom portion provided at the other end portion of the housing portion and closing the other end portion,
The housing portion is formed separately from each other and has an inner housing portion and an outer housing portion made of a flexible film body, and the outer housing portion is disposed outside the inner housing portion, The housing part and the outer housing part are movable relative to each other,
The flexibility of the outer housing part is set lower than the flexibility of the inner housing part,
The inner housing portion and the outer housing portion are formed as a cylindrical body having both ends opened, and the bottom portion is formed separately from the inner housing portion and the outer housing portion, and is reinforced to one end portion of the inner housing portion. A ring is fixed, the bottom is fixed to the other end of the inner housing, and the outer housing is movable in the longitudinal direction of the outer housing with respect to the reinforcing ring and the bottom; One end surface and the other end surface of the part are abutted against the reinforcing ring and the bottom part, respectively, and the reinforcing ring has a predetermined flexibility for deforming in the radial direction, and one end part of the inner cylindrical part has a certain shape A container characterized by having a predetermined strength for maintaining the container. In a container provided with a housing portion having one end opened made of a flexible film body and a bottom portion provided at the other end portion of the housing portion and closing the other end portion,
The housing portion is formed separately from each other and has an inner housing portion and an outer housing portion made of a flexible film body, and the outer housing portion is disposed outside the inner housing portion, The housing part and the outer housing part are movable relative to each other,
The inner housing portion and the outer housing portion are formed as a cylindrical body having both ends opened, the bottom portion is formed separately from the inner housing portion and the outer housing portion, and one end outer peripheral surface of the inner housing portion A lid for closing one end opening of the inner housing portion is fixed, a second reinforcing ring is fixed to the outer peripheral surface of the other end portion of the inner housing portion, and the bottom portion is an inner peripheral surface of the other end portion of the inner housing portion. The lid is fitted in a sealed state so as to be movable in the longitudinal direction of the inner housing portion, and the lid body is formed with a discharge port for discharging the contents housed inside the inner housing portion to the outside. A container characterized by being made.   The container according to claim 4, wherein the flexibility of the outer housing part is set lower than the flexibility of the inner housing part.   One end portion of the inner housing portion is protruded to the outside from one end portion of the outer housing portion, and one end portion of the inner housing portion protruding from the outer housing portion is fixed to the inner peripheral surface of the lid body, 6. One end of the outer housing part is inserted between the outer peripheral surface of the inner housing part and the inner peripheral surface of the lid so as to be movable in the longitudinal direction of the inner housing part. Container as described in.

Images