Double container for viscous content

Abstract

To provide a double container for a viscous content allowed to give a nice fragrance upon operation.SOLUTION: A double container for a viscous content comprises a double container body 2 that consists of an outer container 4 having a mouth / neck 5 and an inner container 8 disposed within the outer container 4 and formed to be reduced in capacity with ejection of a viscous content, and an ejection member 10 that is attached on the mouth / neck 5 and has a vertical ejection passage P having an ejection port 41 communicating with an interior of the inner container 8. In a circumferential part of the ejection passage P, a perforating projection 42 is protruded from an inner face of the ejection passage P to perforate a slit s along an ejection direction Z in a surface of the viscous content passing the ejection passage P.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a double container for viscous contents, particularly a double container suitable for storing aromatic wasabi, etc. The double container includes a container in which a shrinkable inner container is peelably laminated to an outer container (so-called delamination container). [Background technology]

[0002] A delamination container is known that has a pouring outlet opening into the top wall of a cap body that is fitted onto the mouth and neck of an outer container, and that is connected to the inside of an inner container and has a discharge passage that incorporates a discharge valve (Patent Document 1). Also, although it is not a double-walled container, a tube container is known in which the contents, such as mustard paste or wasabi paste, are stored and pushed out from the mouth of the container by squeezing the body (see paragraph 0002 of Patent Document 2). The mouth mentioned above is simply a structure with an opening for a discharge hole. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2015-105131 [Patent Document 2] Patent Publication No. 2002-193283 Summary of the Invention [Problem to be solved by the invention]

[0004] Regarding fragrant contents such as wasabi, there is a demand for enjoying the aroma when dispensing from a container, but Patent Documents 1 and 2 fail to fully meet this demand.

[0005] An object of the present invention is to provide a dual container for viscous contents which releases aroma easily when handled. [Means for solving the problem]

[0006] The first means is a double-container body 2 including an outer container 4 having a mouth and neck portion 5 and an inner container 8 disposed inside the outer container 4 and formed so as to be able to be reduced in volume as the viscous contents are discharged; a discharge member 10 attached to the mouth and neck portion 5 and provided with a vertical discharge path P having a discharge port 41 communicating with the inside of the inner container 8; At a portion of the circumference of the discharge path P, a perforation protrusion 42 is protruded from the inner surface of the discharge path P for perforating a slit s along the discharge direction Z on the surface of the viscous contents passing through the discharge path P.

[0007] As shown in Figures 1(A), 2(A), and 3(A), this means comprises a double container body 2 in which a collapsible inner container 8 is disposed inside an outer container 4 having a mouth and neck portion 5, and a discharge member 10 having a vertical discharge path P attached to the mouth and neck portion 5. According to this structure, by using a double container body in which the inner container reduces in volume as the viscous contents are discharged, outside air is prevented from entering the inside of the inner container 8, thereby maintaining quality (e.g., preserving the flavor of the viscous contents). In this embodiment, a perforation projection 42 is provided protruding from the inner surface of the discharge path P in a part of the circumferential direction of the discharge path P. The perforation projection 42 is for perforating a slit s along the discharge direction Z on the surface of the viscous contents passing through the discharge path P. According to this structure, by perforating a slit s, shown by an imaginary line in Figure 1 (B), on the surface of the viscous contents passing through the discharge path P, the surface area of ​​the viscous contents is increased, and the aroma of the viscous contents can be efficiently extracted.

[0008] The second means has the first means, and the discharge member 10 comprises an inner plug 12 fitted into the mouth-neck portion 5, a cap body 30 fitted onto the mouth-neck portion 5 to cover the inner plug 12 and having an outside air introduction hole 36 for introducing outside air between the outer container 4 and the inner container 8, and a valve body 22 supported by the inner plug 12 and opening and closing the outside air introduction hole 36; The discharge passage P consists of a lower discharge tube 20 through which the inner plug 12 passes, and an upper discharge tube 40 having a smaller diameter than the lower discharge tube 20 and penetrating the cap body 30, and the piercing protrusion 42 is attached to the upper discharge tube 40.

[0009] The double container of this means has a basic structure, as shown in Figures 1(A), 2(A), and 3(A), of the discharge member 10, which is constituted by an inner stopper 12 fitted into the mouth and neck portion 5, a cap body 30 fitted onto the mouth and neck portion 5 and having an outside air introduction hole 36 for introducing outside air between the outer container 4 and the inner container 8, and a valve body 22 supported by the inner stopper and opening and closing the outside air introduction hole 36. According to this configuration, the negative pressure inside the double container body 2 is eliminated by the introduction of outside air, so that the viscous contents inside the discharge path P remain as they are when discharge is completed. This residue ensures sealing and maintains the quality, such as the flavor, of the viscous contents inside the inner container 8. In this means, the discharge passage P consists of a lower discharge tube 20 that opens the inner plug 12 and an upper discharge tube 40 that is inserted into the cap body 30, and the upper discharge tube 40 has a smaller diameter than the lower discharge tube 20. The perforation projection 42 is attached to the upper discharge tube 40 and is configured to bite into the viscous contents passing through the upper discharge tube 40, thereby perforating a slit s in the surface thereof. According to this structure, after the discharge operation is completed, the viscous contents are held in the discharge passage P with the piercing projection 42 biting into it, thereby obtaining good sealing properties.

[0010] The third means has the first means or the second means, and the piercing projection 42 has a cutting edge t on the underside.

[0011] In this means, as shown in FIG. 2(A) or FIG. 3(A), the perforating projection 42 has a cutting edge t on the lower side. According to this structure, the piercing projection 42 smoothly bites into the viscous contents, and resistance to the extrusion of the viscous contents can be reduced.

[0012] The fourth means has the third means, and as the piercing protrusion 42, a plurality of cutting protrusions having the cutting edge t on the lower side are protruded from the inner surface of the discharge passage P, and the tip ends of these protrusions are connected to each other.

[0013] In this method, as shown in Figure 2 (C) or Figure 3 (C), a plurality of cutting protrusions having cutting edges t on the lower side are protruded from the inner surface of the discharge passage P as the piercing protrusions 42, and the tips of these protrusions are connected to each other. According to this structure, the viscous contents passing through the discharge passage P can be divided, and the aroma can be released more satisfactorily.

[0014] The fifth means includes the third means, and the punching projection 42 is a cutting blade having a blade body that is long in a direction inclined with respect to the flow path direction V of the discharge path P when viewed from the protruding direction.

[0015] In this embodiment, as shown in FIG. 3(A), the punching projection 42 is a cutting blade having a long blade in a direction inclined with respect to the flow path direction V of the discharge path P when viewed from the protruding direction. According to this structure, the viscous contents passing through the discharge passage P can be more easily divided than in the fourth means, and the release of aroma can be further improved. Effect of the Invention

[0016] According to the present invention, the double container for viscous contents emits a good aroma when it is operated. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 shows the configuration of a double container for the first embodiment of the present invention, where (A) is a cross-sectional view of the main part of the container (neck and discharge member), (B) is an enlarged view of a portion of (A), and (C) is a cross-sectional view of a portion of the main part (upper discharge tube) from above. [Diagram 2]1 shows the configuration of a double container for a second embodiment of the present invention, in which (A) is a cross-sectional view of the main part of the container (neck and discharge member), (B) is an enlarged view of a portion of (A), and (C) is a cross-sectional view of a portion of the main part (upper discharge tube) from above. [Diagram 3] 1 shows the configuration of a double container for a third embodiment of the present invention, in which (A) is a cross-sectional view of the main part of the container (neck and discharge member), (B) is an enlarged view of a portion of (A), and (C) is a cross-sectional view of a portion of the main part (upper discharge tube) from above. BEST MODE FOR CARRYING OUT THEINVENTION

[0018] FIG. 1 shows a double container for viscous contents according to a first embodiment of the present invention. This double container is composed of a double container body 2 and a discharge member 10. These members can be made of, for example, a synthetic resin material. The double container of the present invention is suitable for storing contents having a viscosity that allows the contents to easily maintain the shape of the fluid at the time of discharge after being discharged from the discharge port 41 described below. More specifically, it is suitable for storing contents having a viscosity of about 10,000 to 100,000 mPa s. Examples of suitable contents are spices such as wasabi, mustard, ginger, and garlic, and viscous foods.

[0019] The double container body 2 comprises an elastically compressible outer container 4 and a deformable inner container 8 disposed inside the outer container 4. After squeezing the double container body 2 to perform the discharge operation, outside air is introduced between the outer container 4 and the inner container 8 to restore the squeezed outer container 4, and the inner container 8 remains in its reduced volume. The structure is such that the viscous contents remain in the discharge path after discharge, preventing outside air from entering the inner container 8. This has the effect of preserving the flavor of the viscous contents. The double container body 2 in this embodiment is formed as a delamination container (laminated double container) described below, but its structure can be modified as appropriate, and it may also be a double container in which a small-diameter inner container that can be reduced in volume is housed in a large-diameter outer container, and outside air can be introduced between the outer container and the inner container.

[0020] The outer container 4 is the outer layer of a double container body, and has a mouth and neck portion 5 standing upright from a squeezable body portion (not shown). In the illustrated example, a male thread 6 is formed at the upper part of the mouth-and-neck part 5. In addition, an air hole 7 is opened at the lower part of the mouth-and-neck part 5 to allow air to be sucked between the outer layer 4, which is the outer container, and the inner layer 8, which is the inner container. Further, below the location where the vent hole 7 is formed, there is formed a vertical seal surface portion m having a larger diameter than that location. This seal surface portion m is a portion for making intimate contact with a cap peripheral wall 32 described below.

[0021] The inner container 8 is the inner layer of the double container body, and is laminated over the entire inner surface of the outer layer 4, and is formed so as to be peelable except for the upper end side.

[0022] The discharge member 10 is a generally cap-shaped member attached to the mouth and neck portion 5, and is provided with a vertical discharge passage P having a discharge port 41 communicating with the inside of the inner container 8. A piercing projection 42, which will be described later, protrudes from the inner surface of this discharge passage P. In this specification, the term "vertical" means the vertical direction in Figures 1(A), 2(A), and 3(A) unless otherwise specified. The same applies to terms such as "horizontal," "upper," and "lower." The discharge member 10 of this embodiment is composed of an inside plug 12, a cap body 30, a valve body 22, and an upper lid 50. However, the upper lid 50 can be omitted.

[0023] The inside plug 12 serves as a support means for the valve body 22 (valve body holder). The inner plug 12 is fitted into the mouth / neck portion 5, and has a lower discharge tube 20, which will be described later, that opens the inner plug 12 in the discharge direction Z (vertical direction). In this specification, the term "open" is used to mean that the bore of the lower discharge cylinder is configured to pass through the inner plug. In this embodiment, the inside plug 12 has a peripheral mounting wall 14 protruding upward from the peripheral end of a lower top wall 16 placed on the mouth and neck portion 5 . In this embodiment, the lower top wall 16 is composed of a horizontal ring-shaped wall portion 17 supported by the mouth and neck portion 5, a hanging cylinder portion 19 suspended from the inner peripheral end of the ring-shaped wall portion 17, and the above-mentioned lower discharge cylinder 20 protruding upward and inward from the lower end of the hanging cylinder portion 19. An annular fitting recess f is formed between the hanging cylinder portion 19 and the lower discharge cylinder 20 for fitting a valve cylinder 24 described below. However, these structures can be modified as appropriate. A cylindrical seal portion 18 is provided downwardly from the rear surface of the ring-shaped wall portion 17 and is fitted liquid-tightly onto the inner surface of the mouth / neck portion 5 . The mounting peripheral wall 14 is a portion for mounting to a cap peripheral wall 32 of a cap body 30 described later. A communication hole 15 is formed in the lower portion of the mounting peripheral wall 14 for connecting the ventilation hole 7 to an outside air introduction hole 36 described later.

[0024] The lower discharge cylinder 20 constitutes a discharge passage P together with an upper discharge cylinder 40 described later. In this embodiment, the lower part of the lower discharge tube 20 is formed into a lower tapered part 20a having a small diameter at the upper end, and the upper part of the lower discharge tube 20 is formed into a straight cylindrical base tube part 20b.

[0025] The valve body 22 is an outside air introduction valve body that is supported by the inside plug 12 and opens and closes the outside air introduction hole 36 . In this embodiment, the valve body 22 is composed of a valve cylinder 24 fitted into the fitting recess f, and a valve plate 26 protruding outward from the valve cylinder 24.

[0026] The cap body 30 is a member that is fitted onto the mouth and neck portion 5 so as to cover the upper surface of the inner plug 12, and has an outside air inlet hole 36 in an appropriate position for introducing outside air between the outer layer 4 and the inner layer 8 of the double container body 2. According to the configuration of this embodiment, after the discharge operation, outside air is introduced between the outer container 4 and the inner container 8 through the outside air inlet 36, so that the compressed outer container 4 returns to its original shape and the reduced volume state of the inner container 8 is maintained. Since the contents are viscous, the viscous contents remain in the discharge path, and this residue prevents air from entering the inner container 8. Therefore, the quality of the viscous contents in the inner container 8, such as the flavor, is maintained. However, outside air may be introduced from a pinch-off part at the bottom of the double container body (not shown) instead of being introduced from the outside air introduction hole 36 of the cap body 30 via the vent hole 7 of the mouth and neck part 5. Also, a valve may be provided in the body of the outer container 4 to introduce outside air. In this embodiment, the cap body 30 is formed of a cap peripheral wall 32 that is fitted (screwed in the illustrated example) into the mouth neck portion 5, an upper top wall 34 attached to the upper end of the cap peripheral wall 32, and an upper discharge tube 40 that penetrates the upper top wall 34.

[0027] The cap peripheral wall 32 has a female thread portion 33 that meshes with the male thread portion 6. The lower end portion of the cap peripheral wall 32 is in airtight contact with the seal surface portion m. A flat support surface u is formed on the upper surface of the cap peripheral wall 32 for placing the lower end of the lid peripheral wall 52 described below, and the upper end of the outer surface of the cap peripheral wall 32 is connected to the lid peripheral wall 52 via a hinge portion 48. The mounting peripheral wall 14 is fitted onto the upper end of the inner surface of the cap peripheral wall 32 .

[0028] The upper top wall 34 is connected to the upper end of the cap peripheral wall 32 so as to cover the upper part of the lower top wall 16 . The upper top wall 34 in the illustrated example is formed by raising a ring-shaped higher wall portion 34c via a step portion 34b from a ring-shaped lower wall portion 34a connected to the cap peripheral wall 32. An outside air introduction hole 36 is opened in the step portion 34b. The lower wall portion 34a is formed with a locking projection b located on the opposite side to the hinge portion 48, which is adapted to be locked with an annular recess c which will be described later. Further, an annular engagement groove e into which the upper end of the mounting peripheral wall 14 is fitted is formed on the lower surface of the lower wall portion 34a. An annular ridge 38 that fits onto the outer surface of the valve cylinder 24 is provided around the lower surface of the higher wall portion 34c.

[0029] The upper discharge tube 40, which functions as a nozzle tube, is connected to the inner peripheral end of the higher wall portion 34c and extends both upward and downward from this inner peripheral end. The lower end of the upper discharge tube 40 is in liquid-tight contact with the upper end of the lower discharge tube 20, whereby the discharge passage P is formed inside the lower discharge tube 20 and within the lower discharge tube 20. However, these structures can be modified as appropriate. In this embodiment, the inner diameter of the upper discharge tube 40 (in the illustrated example, the tip tube portion 40b described below) is smaller than the inner diameter of the lower discharge tube 20 (in the illustrated example, the inner diameter of the base tube portion 20b), and therefore, the discharge path P is configured so that the inner diameter becomes smaller toward the discharge port 41. In the illustrated example, the lower part of the upper discharge tube 40 is formed into an upper tapered portion 40a, and the upper part of the upper discharge tube 40 is formed into a straight cylindrical tip portion 40b, and a tapered portion R is formed extending from the lower tapered portion 20a to the upper tapered portion 40a, the diameter of which decreases from the upstream side to the downstream side. By adopting the configuration of the reduced diameter section R having the lower tapered section 20a and the upper tapered section 40a, it becomes easier to guide the viscous contents in the double container body 2 to the discharge outlet 41, compared to, for example, a structure in which the flow path area suddenly reduces midway through the discharge path. A discharge port 41 is formed at the upper end of the upper discharge port 41 . This outlet 41 always communicates with the inside of the inner layer 8 in the state at the time of manufacture. The term "always in communication" does not include a structure in which a discharge valve is provided in the discharge passage. The term "in the state at the time of manufacture" means that the manner of use after manufacture may be such that the discharge passage P is blocked by the viscous contents themselves, as described below.

[0030] The aforementioned piercing projection 42 is provided at an appropriate position of the discharge passage P (the upper discharge cylinder 40 in this embodiment). This perforation protrusion 42 is a part for perforating a slit s along the discharge direction Z on the surface of the viscous contents passing through the discharge path P during the discharge operation, as shown by an imaginary line in Figure 1 (B), and is formed in a part of the circumferential direction of the discharge path P. The perforation projection 42 perforates a slit s in the surface of the viscous contents passing through the discharge passage P, thereby increasing the surface area of ​​the viscous contents and efficiently extracting the aroma of the viscous contents. In addition, as described later, it becomes easier to mix flavors such as wasabi with seasonings such as soy sauce. Here, a "slit" refers to a gap that appears on the surface of the viscous contents and is capable of releasing fragrance, and includes the gaps between the fluids when the viscous contents are divided into multiple fluids, as described below. Here, "perforation" refers to biting into the surface of the viscous contents passing through the discharge path P, and includes the mode of cutting the surface with a blade-like protrusion, which will be described later. In this embodiment, as shown in Fig. 1(C), a plurality of (eight in the illustrated example) piercing projections 42, which are sawtooth-shaped when viewed from above, are provided on the inner surface of the upper discharge cylinder 40. By providing a large number of piercing projections 42, it is possible to release more fragrance. However, the number and arrangement of the puncture projections 42 can be changed as appropriate, and a pair of puncture projections 42 may be provided at two locations in the circumferential direction (for example, on the hinge portion 48 side and the opposite side). In this embodiment, the perforation projection 42 is formed as a vertical flat plate. However, the structure of the perforation projection 42 can be appropriately changed, and for example, the projection 42 may be formed as an inclined plate portion inclined with respect to the vertical direction. Further, the side surface 43 of the perforation projection 42 is a vertically long rectangle, but the shape can be changed as appropriate. As shown in FIG. 1(B), the perforation projection 42 in the illustrated example is formed as a plate-like portion having a lower end portion 44 that is a flat end portion and an upper end portion 45 that is a round end portion when viewed in the radial direction. In the illustrated example, a gap g is formed between the upper end 45 of the piercing projection 42 and the discharge port 41, into which an inner ring 66, which will be described later, is inserted. In the illustrated example, the puncturing projection 42 is arranged near the discharge port 41 and is designed so that the viscous contents are discharged to the outside while leaving a slit s on the surface.

[0031] The upper cover 50 is formed by attaching a top plate 60 to the upper end of the peripheral cover wall 52 . The lid peripheral wall 52 is placed on the placement surface u of the cap peripheral wall 32 and is connected to the cap peripheral wall 32 via the hinge portion 48 . An annular recess c is formed on the inner surface of the cap peripheral wall 32, into which the outer peripheral end of the lower wall portion 34a is inserted, and a vertical protrusion 56 is formed on the upper side of this annular recess c. A finger hook 58 is provided on the outer surface of the cap peripheral wall 32 . The back surface of the top plate 60 is provided with an engaging tube portion 64 that is engaged with the outer surface of the upper end of the upper discharge tube 40, and an inner ring 66 that is liquid-tightly engaged with the outer surface of the upper end of the upper discharge tube 40. Instead of providing an inner ring, a seal material such as an aluminum seal may be attached to the discharge port 41 .

[0032] In the above configuration, when the top lid 50 is opened from the state shown in Figure 1 (A), the double container is tilted, and the body of the outer layer 4 is squeezed, the inside of the double container body 2 (the gap between the outer layer 4 and the inner layer 8 and the inside of the inner layer 8) becomes highly pressurized, and the viscous contents such as wasabi pass through the discharge path P and are discharged to the outside from the discharge port 41. At this time, the piercing projection 42 bites into the viscous contents passing through the discharge path P, forming a slit s on the surface of the viscous contents as shown by imaginary lines in FIG. 1(B). This increases the surface area of ​​the viscous contents, improving aroma release. In addition, by forming the slits s, for example, wasabi, which is a viscous substance, can be more easily loosened when mixed with seasoning such as soy sauce in a small dish. When the compression of the body portion is released, the body portion of the outer layer 4 elastically recovers, the inner layer 8 peels off from the outer layer 4, the valve body 22 opens, and outside air flows from the outside air inlet hole 36 through the communication hole 15 of the cap body 30 and the air vent 7 of the mouth and neck portion 5 into between the outer layer 4 and the inner layer 8, eliminating the negative pressure inside the double container body 2. The viscous contents in the discharge path P at the time when the negative pressure is released remain in the discharge path P with the piercing projection 42 biting into it. Therefore, the viscous contents act as a lid that closes the discharge path P, ensuring sealing properties and maintaining the flavor of the viscous contents in the inner layer 8.

[0033] According to the above-mentioned configuration and action, the perforation protrusion 42 is protruded from the inner surface of the discharge path P of the discharge member 10, and by perforating a slit s in the surface of the viscous contents passing through the discharge path P, the surface area of ​​the viscous contents can be increased and the aroma of the viscous contents can be efficiently extracted. In addition, the viscous contents remaining in the discharge passage P after the discharge operation is completed can block the discharge passage P, thereby ensuring sealing performance.

[0034] Other embodiments of the present invention will be described below. In these descriptions, explanations of structures that are the same as those in the first embodiment will be omitted.

[0035] FIG. 2 shows a double container for viscous contents according to a second embodiment of the present invention. In this embodiment, the configuration of the perforation projection 42 in the first embodiment is changed. That is, the puncture projections 42 in this embodiment are cutting projections for cutting viscous contents, and as shown in Fig. 2(C), they are respectively provided to protrude from the inner surface of the discharge passage P and are connected to each other at the tip side via a connecting part 46. The connecting part 46 may have any structure as long as it can connect the puncture projections 42 to each other. According to this configuration, the viscous contents passing through the discharge passage P can be divided into multiple streams of liquid. This improves the aroma and allows spices such as wasabi to be mixed into seasonings such as soy sauce more accurately. In the illustrated example, the piercing projection 42 is arranged in the vicinity of the discharge port 41 and is designed so that the viscous contents are discharged to the outside while remaining in a divided state. In the illustrated example, three equiangularly spaced piercing projections 42 are provided protruding from the inner surface of the discharge passage P, but the number and angle between the piercing projections 42 can be changed as appropriate.

[0036] Further, the perforating projection 42 in this embodiment is formed as a blade-like projection (incision blade) with a cutting edge t at a lower end 44 which is the end on the upstream side. The perforation projection 42 in the illustrated example has a flat upper end 45 and has an acute triangular cross section that is symmetrical with respect to the discharge direction Z. In this configuration, the viscous contents passing through the discharge path P during discharge are pushed circumferentially to both sides along a pair of side surfaces 43 of the piercing protrusion 42, thereby forming a slit s on the upper side (downstream side) of the piercing protrusion 42. According to these configurations and actions, the resistance of the flow of the viscous contents against the puncturing projection 42 can be reduced, and the formation of the slit s can be carried out smoothly. However, the shape of the perforation projection 42 can be changed as appropriate. The perforation projection 42 may be an independent perforation projection having a cutting edge t on the lower side and not having the tips connected to each other.

[0037] 3 shows a double container for viscous contents according to a third embodiment of the present invention. In this embodiment, the puncture protrusion 42 in the configuration of the second embodiment is a cutting blade having a long blade body in a direction inclined with respect to the flow path direction Z of the discharge path P (the cylindrical axis direction of the front cylindrical portion 40b). The perforation protrusion 42 in the illustrated example has a cross-sectional shape of an acute triangle when viewed from the direction of its protrusion, with one side 43B of this triangle inclined at a slight angle α with respect to the flow path direction V, and the other side 43A inclined significantly with respect to the flow path direction V. In this configuration, the viscous contents passing through the discharge path P during discharge are pushed aside along one side surface 43A and the other side surface 43B of the piercing projection 42 described above. As a result, the flow of the viscous contents becomes twisted with respect to the discharge direction Z in the vicinity of the piercing projection 42. According to the configuration of this embodiment, the blade body of the piercing projection 42 is inclined to one side, thereby improving the release of aroma. [Explanation of symbols]

[0038] 2: Double container body; 4: Outer container (outer layer); 5: Mouth neck portion; 6: Male thread portion; 7: Vent hole; 8…Container (inner layer) 10: Discharge member 12: Inner plug 14: Mounting wall 15: Communication hole 16...Lower top wall 17...Ring-shaped wall part 18...Seal cylinder part 19...Descent cylinder part 20: Lower discharge tube; 20a: Lower tapered portion; 20b: Base tube portion 22: valve body; 24: valve cylinder; 26: valve plate 30: Cap body; 32: Cap peripheral wall; 33: Female thread portion; 34: Upper top wall 34a: low wall portion; 34b: step portion; 34c: high wall portion; 36: outside air introduction hole 38: convex strip 40: upper discharge tube 40a: upper tapered portion 40b: leading tube portion 41...Discharge port 42...Drilling protrusion 43 43A 43B...Side surface 44...Lower end 45: Upper end portion 46: Connection portion 48: Hinge portion 50: Upper cover; 52: Cover peripheral wall; 56: Vertical ridge; 58: Finger hook portion 60: Top plate; 64: Fitting cylinder portion; 66: Inner ring b...Latching projection c...Annular recess e...Engagement groove f...Fitting recess g...Gap m...Seal surface P: Discharge passage R: Reduced diameter section s: Slit t: Blade tip u: Placement surface V: Cylinder diameter direction (flow path direction) Z: Discharge direction

Claims

1. A double-container body (2) including an outer container (4) having a neck (5) and an inner container (8) disposed inside the outer container (4) and formed so as to be reducible in volume as the viscous contents are discharged; a discharge member (10) attached to the mouth and neck portion (5) and provided with a vertical discharge passage (P) having a discharge port (41) communicating with the inside of the inner container (8); A double container for viscous contents, characterized in that a perforation protrusion (42) protrudes from the inner surface of the discharge path (P) in a portion of the circumferential direction of the discharge path (P) to perforate a slit (s) along the discharge direction (Z) in the surface of the viscous contents passing through the discharge path (P).

2. The discharge member (10) comprises an inner plug (12) fitted into the mouth and neck portion (5), a cap body (30) fitted onto the mouth and neck portion (5) to cover the inner plug (12) and having an outside air introduction hole (36) for introducing outside air between the outer container (4) and the inner container (8), and a valve body (22) supported by the inner plug (12) and opening and closing the outside air introduction hole (36). The double container for viscous contents as described in claim 1, characterized in that the discharge passage (P) consists of a lower discharge tube (20) through which the inner plug (12) passes and an upper discharge tube (40) having a smaller diameter than the lower discharge tube (20) and penetrating the cap body (30), and the piercing protrusion (42) is attached to the upper discharge tube (40).

3. The double container for viscous contents according to claim 1 or 2, characterized in that the piercing protrusion (42) has a cutting edge (t) on the lower side.

4. The double container for viscous contents as described in claim 3, characterized in that as the piercing protrusion (42), a plurality of cutting protrusions having the cutting edge (t) on the lower side are protruded from the inner surface of the discharge passage (P), and the tips of these protrusions are connected to each other.

5. The double container for viscous contents as described in claim 3, characterized in that the puncturing protrusion (42) is an incision blade having a long blade body in a direction inclined with respect to the flow path direction (V) of the discharge path (P) when viewed from the protruding direction.

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