JP5605625B2 - Squeeze container - Google Patents

Description

  The present invention relates to a squeeze container that pours out a content liquid using squeeze properties.

Patent Document 1 describes a typical example of a squeeze container for storing and using liquid food such as mayonnaise, dressing, sauce, etc. In the examples, the mouthpiece part of the container body made of synthetic resin is described. An example in which an inner plug provided with a discharge valve and a suction valve is provided at the tip is shown, and it is configured so that there is no dripping from the inside or intrusion of outside air from the outside.
In this type of squeeze container, the squeeze operability is taken into account depending on the type of liquid to be stored, particularly its viscosity, and the problem of dripping at the start of dispensing and the problem of running out of liquid after dispensing are considered. It is necessary to design the product.

JP 2004-196357 A

Here, the problem of dripping at the start of pouring is roughly as follows.
In this type of squeeze container (hereinafter sometimes referred to simply as a container), when dispensing starts, the container is first tilted upside down to another container, palm, applicator, etc. The direction of the discharge hole is determined, and then the body is pressed by hand, that is, the squeeze operation is performed to pour out the content liquid. And this kind of container is a liquid with a viscosity of about 0.5 to 10 Pa · s in consideration of squeeze operability considering the temperature environment to be used (honey, condensed milk, ketchup, etc. in typical examples of food products) Is suitable for dispensing).
However, depending on the operating temperature, the content liquid with this viscosity will flow out in an unintended direction before setting the direction of the discharge hole as soon as the squeeze container is tilted upside down. There is a case where a problem of contamination occurs, which is a so-called dripping problem.
The solution of the dripping problem is one of the important issues for this type of squeeze container.

  As a method for solving the problem of dripping, there is a method such as disposing a discharge valve at the tip of the mouth tube portion as described above. However, the structure of the container becomes complicated, and the contents adhere to the valve body. Therefore, when using the one stored in the refrigerator, there is a problem that the viscosity increases several times and the squeeze characteristic is impaired due to the discharge valve.

  An object of the present invention is to effectively solve the problem of dripping in a squeeze container with a simple structure and configuration without using a complicated mechanism such as a valve mechanism.

Among the means for solving the above technical problems, the main configuration of the present invention is as follows.
In a squeeze container having a container body in which a mouth tube portion is erected through a tapered cylindrical shoulder at the upper end of a body portion formed so as to be squeezable,
Disposed above the mouth tube portion is a discharge hole communicating with the mouth tube portion,
A reduced-diameter channel part for partially reducing the diameter of the extraction channel is disposed at a predetermined height position of the extraction channel for the content liquid from the lower end of the mouth tube part to the discharge hole. parts and a configuration of forming the buffer chamber is a Note Izuru path of larger diameter than the reduced diameter channel portion and the discharge hole during the discharge hole,
The container body is a blow molded product, and the diameter of the mouth tube portion is partially reduced at a predetermined height position of the mouth tube portion at the time of blow molding to form a reduced diameter short tube portion, and this reduced diameter short tube portion To form a reduced diameter flow path portion,
It is said.

According to the above configuration, when the squeeze container is tilted upside down in an attempt to start dispensing the content liquid, the stored content liquid flows from the lower end of the mouth tube portion to the discharge hole. It flows to the discharge hole through
First, the reduced diameter flow path portion that functions as an orifice in the discharge flow path and the buffer chamber connected to the reduced diameter flow path, the flux of the content liquid abruptly reduced in diameter by the reduced diameter flow path portion is reversed into the buffer chamber. Since it diffuses rapidly, the moving speed of the flow of the content liquid to the discharge hole can be reduced, and the function as a liquid storage buffer area is further exhibited by the buffer chamber,
The time from the tilting of the container to the outflow from the discharge hole due to the natural fall of the liquid content can be sufficiently delayed, and the direction of the discharge hole can be adjusted with a margin while preventing dripping in the range of normal usage. Then, a squeeze operation can be performed.

  Further, according to the above configuration, it is not necessary to use a complicated member such as a valve body, and liquid dripping can be prevented with a simple structure, and the viscosity, temperature environment, and usage mode of the content liquid to be used are considered. Thus, by appropriately determining the diameter of the reduced diameter flow path portion, the diameter and volume of the buffer chamber, the diameter of the discharge hole, and the like, it is possible to provide a squeeze container in which dripping is suppressed with respect to various content liquids.

Further, according to the above blow molding method, a part of the cylindrical parison is crushed by the split mold and air blown into the inside, thereby the mouth tube at a predetermined height position of the mouth tube portion. The diameter of the portion can be partially reduced to form a reduced diameter short tube portion, and the reduced diameter flow path portion can be formed without using a separate member.

Another configuration of the present invention is the above-described main configuration, in which the reduced diameter channel portion, the buffer chamber, and the discharge channel in the discharge hole have a circular cross-sectional shape, the channel diameter of the reduced diameter channel portion, and the buffer chamber It is said that the relationship between the flow path diameter and the flow path diameter of the discharge hole satisfies the conditions shown in the following formulas (1) and (2).
D2> D1 ≧ D3 (1)
D2> 1.5 * D1 (2)
However, D1 is the flow path diameter of the reduced diameter flow path section, D2 is the flow path diameter of the buffer chamber, and D3 is the flow path diameter of the discharge hole.
Here, when the diameter of the reduced diameter flow path portion or the discharge hole changes in a taper shape or a step shape, D1 and D3 are the minimum diameters, and the flow path diameter D2 of the buffer chamber is an average value over the entire height range. To do.

As described above, the viscosity of the content liquid to be used, the temperature environment, the diameter of the reduced diameter flow path portion, the diameter of the buffer chamber, the diameter of the discharge hole, etc. can be determined as appropriate, The above-described configuration determines a measure of the size relationship between the reduced diameter flow path portion, the buffer chamber, and the discharge hole flow path.
Here, if the diameter D1 of the reduced diameter flow path portion is smaller than the diameter D3 of the discharge hole, a large pressing force is required in the squeeze operation to receive a large resistance in the middle of the discharge flow path. Therefore, it is preferable that the relationship between D1, D2, and D3 be as shown in Expression (1).
Further, in order to sufficiently exhibit the orifice effect in the reduced diameter flow path portion and the buffer effect in the buffer chamber, it is preferable that the magnitude relationship between D1 and D2 is expressed by the equation (2).

  Still another configuration of the present invention is that, in the above main configuration, the volume of the buffer chamber is in the range of 0.5 to 2 ml.

  The volume of the buffer chamber can also be appropriately determined in consideration of the viscosity of the content liquid to be used, the temperature environment, and the mode of use, but until the content liquid is poured out when squeezed if the volume is too large Therefore, considering the balance with the function as a stable liquid storage buffer region, the volume of the buffer chamber is preferably in the range of 0.5 to 2 ml.

Still another structure of the present invention is the above-described main structure, wherein the pouring cap body having a top wall shape having a top wall in which a discharge hole is formed is formed by the tubular portion of the pouring cap body. It is said that it is configured to be fitted and assembled to form a dispensing flow path by communicating the mouth tube portion and the dispensing cap body.

  The above configuration is a configuration in which a discharge hole is opened in the top wall of the pouring cap body that is assembled and fixed to the mouth tube portion of the container body, and the pouring flow path that reaches the discharge hole using the pouring cap body The seal tube is inserted into the mouth tube portion so as to hang down from the inside of the tubular portion to ensure sealing performance, and the orifice member described above is arranged in the mouth tube portion using this seal tube. It is possible to add a function suitable for the pouring operation, for example, and to expand options for the configuration of the squeeze container.

  Still another configuration of the present invention is used in the above-described main configuration by storing a content liquid having a viscosity in the range of −5 ° C. to normal temperature (23 ° C.) of 0.5 to 10 Pa · s (500 to 10,000 cP). It is said to be.

  The squeeze container of the present invention has a viscosity of 0.5 to 10 Pa · s from −5 ° C. to normal temperature (23 ° C.) by appropriately determining the diameter of the reduced diameter flow path portion, the diameter and volume of the buffer chamber, and the diameter of the discharge port. Thus, it is possible to provide a squeeze container in which dripping is suppressed in a wide range of content liquids over the above range.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the squeeze container according to the present invention, the squeeze container mainly has a reduced diameter channel portion that functions as an orifice in the discharge channel and a buffer chamber connected to the reduced diameter channel portion. On the contrary, since the flux of the diameter of the content liquid rapidly diffuses into the buffer chamber, the moving speed of the content liquid to the discharge hole at the flow tip can be reduced, and the buffer chamber can further reduce the speed of the reservoir. As a function,
The time from the tilting of the container to the outflow from the discharge hole due to the natural fall of the liquid content can be sufficiently delayed, and the direction of the discharge hole can be adjusted with a margin while preventing dripping in the range of normal usage. Then, a squeeze operation can be performed.

  In addition, it is not necessary to use complicated members such as a valve body, and it is possible to prevent liquid dripping with a simple structure, considering the viscosity of the content liquid to be used, the temperature environment, and the usage mode, and the reduced diameter flow path section By appropriately determining the diameter, the diameter and volume of the buffer chamber, the diameter of the discharge hole, and the like, it is possible to provide a squeeze container in which dripping is suppressed with respect to various contents.

It is a half vertical front view of the 1st reference example of the squeeze container of the present invention. It is explanatory drawing which shows the usage condition of the container of FIG. 1, (a) is the state inclined in the inverted state, (b) is the state which pressed the trunk | drum and poured out the content liquid. It is a front view which shows a 2nd example of a 2nd example of a squeeze container of the present invention partially longitudinally. It is a vertical side view of the 3rd reference example of the squeeze container of this invention. It is explanatory drawing which shows the usage condition of the container of FIG. It is a half vertical front view of the 4th reference example of the squeeze container of the present invention. It is explanatory drawing for demonstrating the formation method of the discharge hole of the container of FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below along the examples with reference to the drawings.
1 and 2 show a first reference example of a squeeze container according to the present invention. FIG. 1 is a front view of a half longitudinal section, and FIG. 2 is an explanatory view showing a use mode of the squeeze container. The container includes a tube container-shaped container body 1, a pouring cap body 11 that is assembled and fixed to the mouth tube part 2 of the container body 1, and a bottomed tubular orifice member disposed inside the mouth tube part 2. 21.
In FIG. 1, is shown mounted over caps 31 to exterior of the range extending from the dispensing cap 11 to the shoulder 3 of the container body 1.

In this reference example, the container body 1 is made of high-density polyethylene (HDPE) resin, and has a cylindrical barrel portion 4 having a diameter of 40 mm and a height of 120 mm, and a mouth tube portion 2 via a tapered cylindrical shoulder portion 3. Is standing up.
The container body 1 is formed by first forming a bottomed cylindrical casing by blow molding, cutting the bottom from the lower end of the body part 4, and using the lower end of the body part 4 as an open end.
Then, the content liquid is filled from the opening end of the body portion, and then the lower end portion is sealed by heat welding or ultrasonic method to form a flat seal portion 7 as shown by a two-dot chain line in FIG. Used as a tube-shaped container. (The same applies to the container bodies of the second embodiment, the third reference example, and the fourth reference example described later.)

The dispensing cap body 11 is an injection-molded product made of low-density polyethylene (LDPE) resin, and has a top-like cylindrical shape as a whole, and has a top wall 12 with an opening for opening a discharge hole 15. In this region, a taper is formed so that the diameter is reduced toward the top wall 12, and in the lower half region, the fitting cylinder 13 is provided outside and the seal cylinder 14 is provided below the inside.
In FIG. 1, a state in which a seal piece 32 is pasted on the top wall 12 of the dispensing cap body 11 to block the discharge hole 15 is shown.

  The dispensing cap body 11 is assembled and fixed to the mouth tube portion 2 in a state in which the fitting tube 13 is fitted over the upper portion of the mouth tube portion 2 in a locking manner. Further, the seal tube 14 is fitted in the mouth tube part 2 in a liquid-tight manner, the mouth tube part 2 and the inside of the discharge cap body 11 communicate with each other, and the liquid discharge passage P (see FIG. a)) is formed.

The orifice member 21 has a bottomed cylindrical shape as a whole, and a circular plate 22 having a passage hole 23 formed in the center is used as a bottom wall, and a short tube piece fitted slightly inside the peripheral edge of the circular plate 22. 24 is erected.
The orifice member 21 is fitted into the seal tube 14 so as to cross over and engage with the seal tube 14 from below, and is disposed in the mouth tube portion 2, and the orifice member 21 pours into the mouth tube portion 2. A reduced diameter flow path portion S that reduces the diameter of the flow path P is formed.
In addition, the function as a flange which determines the insertion limit to the seal | sticker cylinder 14 with the periphery of the disc 22 is exhibited.

Then, by disposing the cap member 11 and the orifice member 21 pouring mouth tube portion 2 of the container body 1 as described above, pouring the content liquid extending from the lower end of the mouth tube portion 2 to the discharge hole 15 A flow path P is formed, and the reduced diameter flow path portion S is formed by the orifice member 21 in the extraction flow path P in the mouth tube portion 2, and a reduced diameter flow is formed between the reduced diameter flow path portion S and the discharge hole 15. A buffer chamber R which is an extraction flow path P having a larger diameter than the passage S or the discharge hole 15 is formed.
Here, in this reference example, the inner diameter of the mouth tube portion 2 is 8 mm, the diameter of the flow passage hole 23 of the orifice member 21 which is the diameter D1 of the reduced diameter flow passage portion S is 3 mm, and the diameter D3 of the discharge hole 15 is 3 mm. The average value D2 of the diameter of the buffer chamber R is 5.5 mm, and the magnitude relationship is D2> D1 = D3, and D2 / D1 is 1.7. The volume of the buffer chamber is 0.6 ml.

FIGS. 2A and 2B are explanatory views showing how the squeeze container of this reference example is used. FIG. 2A shows a state in which the container is inclined in an inverted state at the start of the pouring operation, and FIG. It shows the state of the content liquid poured out, and schematically shows the observation result of the pouring mode when the content liquid L is filled with condensed milk having a viscosity of 2 Pa · s at a normal temperature of 23 ° C. is there.

First, as shown in FIG. 2A, when the squeeze container is tilted upside down in an attempt to start the dispensing of the content liquid L, the content liquid L is put into the mouth tube portion 2 and the dispensing cap body 11. It flows into the discharge hole 15 through the formed discharge passage P,
First, the diameter-reduced flow path portion S is formed by the diameter-reduced flow path portion S formed by the disk 22 having the flow-path hole 23 of the orifice member 21 formed in the outlet flow path P and the buffer chamber R connected thereto, and then the diameter-reduced flow-path portion S Since the flux of the content liquid L having a reduced diameter rapidly diffuses into the buffer chamber R, the moving speed of the flow front of the content liquid L to the discharge hole 15 can be reduced, and further, the buffer chamber R The function as a buffer-like buffer area is demonstrated,
The time from tilting the container to the outflow from the discharge hole 15 due to the natural fall of the content liquid L can be sufficiently delayed, and the discharge hole with sufficient margin while sufficiently preventing liquid dripping within the range of normal use. 2 is adjusted, and as shown in FIG. 2 (b), a squeeze operation is performed by applying a pressing force in the direction of the white arrow, and the liquid L is poured into the intended direction and location. We were able to.

On the other hand, a squeeze container of a comparative example in which the orifice member 21 was removed from the squeeze container of this reference example was prepared, filled with condensed milk in the same manner as described above, and a pouring operation as shown in FIG. 2 was performed. .
When the container of the comparative example is tilted upside down as shown in FIG. 2 (a), unintentional outflow from the discharge hole 15 due to the natural fall of the content liquid L starts in a short time and prevents dripping in a normal use mode. It was difficult.
In addition, for the squeeze containers of the reference example and the comparative example, the squeeze characteristics such as the pressing force required for the squeeze and the dispensing mode of the content liquid in the squeeze were examined. The influence which arrange | positioned the orifice member 21 with the container of the reference example was not seen.

Moreover, the liquid dripping phenomenon was observed about the container cooled to -5 degreeC with the refrigerator in the state filled with condensed milk supposing use at low temperature.
As a result, of course, no dripping was observed in the container of the reference example, but a slight dripping phenomenon was observed in the container of the comparative example, although the viscosity of the content liquid L increased at a low temperature.

Next, FIG. 3 is a front view partially showing a second embodiment of the squeeze container of the present invention. The squeeze container is composed of a tube container-like container body 1 made of HDPE resin and the mouth of the container body 1. It is comprised from the extraction cap body 11 made from LDPE resin fixedly assembled to the cylinder part 2. As shown in FIG.
In the container of the present embodiment, and equipped with a over-caps 31 to exterior of the range extending from the dispensing cap body 11 of the container body 1 in the shoulder 3 of the container body 1, the pouring cap member 11 The discharge hole 15 opened in the top wall 12 is sealed with the lower surface of the top wall of the overcap 31.

Similar to the container of the first reference example, the container body 1 is obtained by cutting the lower end from a blow molded product made of HDPE resin, and has a cylindrical body 4 with a diameter of 40 mm and a height of 120 mm. The mouth tube part 2 is erected through the shoulder part 3.
The container according to the present embodiment is characterized in that the diameter of the mouth tube portion 2 is partially reduced at a predetermined height position of the mouth tube portion 2 when the container body 1 is blow-molded to reduce the reduced diameter short tube portion 2s. And the reduced diameter channel portion S is formed by the reduced diameter short tube portion 2s.
According to this configuration, there is no need to separately prepare a member constituting the reduced diameter flow path portion S such as the orifice member 21 disposed in the container of the first reference example shown in FIGS. .

The overall shape of the dispensing cap body 11 is substantially the same as that of the dispensing cap body 11 of the first reference example, and has a top wall 12 with a discharge hole 15 formed in the center, and is fitted with a fitting cylinder 13 and a seal. The cylinder 14 is suspended.
The mouth tube portion 2 and the dispensing cap body 11 form a content liquid pouring channel from the lower end of the mouth tube portion 2 to the discharge hole 15. The pouring channel in the mouth tube portion 2 is contracted. A reduced diameter channel portion S is formed by the short diameter cylindrical portion 2s, and a discharge channel having a larger diameter than the reduced diameter short cylinder portion 2s and the discharge hole 15 is formed between the reduced diameter flow channel portion S and the discharge hole 15. A certain buffer chamber R is formed.

Next, FIG. 4 is a longitudinal side view of a third reference example of the squeeze container of the present invention. This container is an LDPE resin that is assembled and fixed to a tube container-like container body 1 and a mouth tube part 2 of the container body 1. It is comprised from the pouring cap body 11 made from.
In the container of this reference example, a lid portion 33 is integrally connected to the dispensing cap body 11 via a hinge 34, and the dispensing cap body 11 is provided by a lid plug 35 that is suspended from the lower surface of the lid portion 33. The discharge hole 15 opened in the top wall 12 is sealed.
In addition, an exterior cylinder 36 is attached to the dispensing cap body 11 in a hanging manner.

  The container body 1 is formed of a cylindrical tube body by extrusion molding in which an inner layer made of ethylene vinyl alcohol copolymer (EVOH) resin is laminated to improve gas barrier properties on an outer layer made of HDPE resin, A head part H composed of a shoulder part 3 made of HDPE resin by injection molding and a mouth tube part 2 is integrated into the upper end part of the body part 4 in a welded shape. It is cylindrical and has a diameter of 40 mm and a height of 120 mm. The mouth tube portion 2 is erected on the body portion 4 with a tapered tubular shoulder portion 3 interposed therebetween.

One of the features of the container of the present reference example is that a top plate 25 having a channel hole 26 formed in the central portion is disposed at the upper opening end of the mouth tube portion 2 when the head portion H is formed. In this case, a member constituting the reduced-diameter channel portion S such as the orifice member 21 disposed in the container of the first reference example shown in FIGS. 1 and 2 is separately provided. There is no need to prepare and assemble it.
Here, the top plate 25 is not only integrally molded by injection molding as in this reference example, but also a disk-shaped member having a separate channel hole 26 is prepared, and this is heated on the upper end surface of the mouthpiece portion 2. It can also be formed by welding.

Further, the basic shape of the dispensing cap body 11 excluding the lid portion 33, the outer casing 36, and the portion of the top wall 12 that is extended in diameter is the top wall in which the discharge hole 15 is formed in the center portion. 12, the fitting cylinder 13 and the seal cylinder 16 are suspended.
The fitting tube 13 is screwed into the mouth tube portion 2 and the lower end surface of the seal tube 16 is pressed against the top surface of the top plate 25 of the mouth tube portion 2 by this screwing force to seal. This is another feature of this reference example.

The mouth tube portion 2 and the dispensing cap body 11 form a content liquid pouring channel from the lower end of the mouth tube portion 2 to the discharge hole 15, and the upper end portion of the pouring channel in the mouth tube portion 2. reduced diameter channel portion S is arranged by a top plate 25 on, during the reduced diameter channel portion S and the discharge hole 15, in the present reference example than reduced diameter channel portion S and the discharge hole 15 to the inside of the tubular sealing 16 A buffer chamber R that is a large-diameter extraction channel is formed.
FIG. 5 is an explanatory view showing a usage mode of the container of the present reference example, and shows a state in which the lid portion 33 is opened and inclined in an inverted shape.

Next, FIG. 6 and FIG. 7 show a fourth reference example of the squeeze container according to the present invention, and FIG. 6 is a half vertical front view.
The container body 1 and the overcap 31 of the squeeze container of the present reference example have the same configuration as the container of the first reference example shown in FIG. 1, and instead of the dispensing cap body 11 of the container of the first reference example. It is characteristic that the inner plug body 41 is used.

The inner plug body 41 has a bottomed cylindrical shape, and has a bottom wall 42 having a flow passage hole 43 formed at the center thereof, and a fitting cylinder 45 erected from the bottom wall 42. An outer fitting cylinder piece 44 is suspended and a reduced diameter channel portion S is formed by the bottom wall 42.
In addition, a circular film piece 47 that functions as a top plate having a discharge hole 15 formed in the center is bonded and fixed to the upper opening end surface of the inner plug body 41 , that is, the opening end surface of the fitting tube 45 by high frequency welding. ing.
Then, the fitting tube 45 is fitted from above the mouth tube portion 2, and the outer fitting tube piece 44 is fitted over the mouth tube portion 2 in a locking manner, and the inner plug body 41 is fitted and fixed to the mouth tube portion 2. In addition, the outlet tube portion 2 and the inner plug body 41 are communicated to form the extraction flow path P.

FIG. 7 is an explanatory view for explaining a method of forming the discharge hole 15 in the container of this reference example. As shown in FIGS. 7A and 7B, the film piece 47 is inserted into the inner plug body 41. FIG . bonded and fixed at a high frequency welding to the upper end surface of the cylindrical 45, the product in a state sealed with the sealing film strip 48 made of an aluminum laminate film to further close the discharge hole 15 is shipped, the start of use in FIG. 7 (c) The seal film piece 48 is peeled off as shown and used. (The state where the seal film piece 48 is peeled off is shown in FIG. 6. )

As mentioned above, although the structure of this invention and its effect were demonstrated along the Example, embodiment of this invention is not limited to the said Example.
In the above embodiment, the container body is in the shape of a tube container, but the blow-molded housing can be used as it is. Moreover, the shape of the trunk portion is not limited to a cylindrical shape, and may be an elliptical cylindrical shape or a long cylindrical shape.
As for the synthetic resin used for the container body, the HDPE resin alone or the example in which the HDPE resin and the EVOH resin are laminated has been described. However, in consideration of squeeze property, gas barrier property, chemical resistance, moldability, etc. The lamination mode can be selected. Also, an aluminum laminate tube body can be used in order to exhibit a high gas barrier property.

In addition, the diameter of the reduced diameter flow path portion, the diameter and volume of the buffer chamber, the diameter of the discharge hole, and the like can be appropriately determined in consideration of the viscosity of the content liquid and the operating temperature environment.
Moreover, although several examples were shown about the formation method of a reduced diameter flow path part, it can be set as various aspects also about this formation method.

  As described above, the squeeze container of the present invention effectively suppresses dripping at the start of pouring with a simple structure, and dispenses a liquid material having a viscosity of about 0.5 to 10 Pa · s. Wide use as a container is expected.

DESCRIPTION OF SYMBOLS 1; Container main body 2; Mouth cylinder part 2s; Reduced diameter short cylinder part 3; Shoulder part 4; Trunk part 7; Seal part 11; Outlet cap body 12; Hole 16; Seal cylinder 21; Orifice member 22; Disc 23; Channel hole 24; Fitting short cylinder 25; Top plate 26; Channel hole 31; Overcap 32; Seal piece 33; plug 36; outer tube 41; Chusentai 42; bottom wall 43; channel hole 44; fitted tubular piece 45; fitted tube 47; filmstrip 48; seal fill arm piece H; head portion L; content liquid P; Note Outlet flow path R; buffer chamber S; reduced diameter flow path section

Claims (5)

It has a container body (1) in which a mouth tube portion (2) is erected on a top end of a body portion (4) formed so as to be squeezable via a tapered tube shoulder (3), and the mouth tube portion ( A discharge hole (15) communicating with the mouth tube portion (2) is disposed above 2), and the content liquid (L) is poured from the lower end of the mouth tube portion (2) to the discharge hole (15). A reduced diameter flow path portion (S) for partially reducing the diameter of the extraction flow path (P) is disposed at a predetermined height position of the path (P), and the reduced diameter flow path portion (S) and the discharge hole A buffer chamber (R), which is an outlet channel (P) having a diameter larger than that of the reduced diameter channel part (S) and the discharge hole (15), is formed between (15) ,
The container body (1) is a blow molded product, and the diameter of the mouth tube portion (2) is partially reduced at a predetermined height position of the mouth tube portion (2) during blow molding to reduce the diameter of the short tube portion. The squeeze container which formed (2s) and formed the diameter-reduction channel part (S) by this diameter-reduced short cylinder part (2s) . The flat cross-sectional shape of the discharge flow path (P) in the reduced diameter flow path section (S), the buffer chamber (R), and the discharge hole (15) is circular, and the flow path diameter of the reduced diameter flow path section (S) and the buffer The squeeze container according to claim 1, wherein the relationship between the flow path diameter of the chamber (R) and the flow path diameter of the discharge hole (15) satisfies the conditions shown in the following expressions (1) and (2).
D2> D1 ≧ D3 (1)
D2> 1.5 * D1 (2)
However, D1 shows the channel diameter of the reduced diameter channel section (S), D2 shows the channel diameter of the buffer chamber (R), and D3 shows the channel diameter of the discharge hole (15).   The squeeze container according to claim 1 or 2, wherein the volume of the buffer chamber (R) is in the range of 0.5 to 2 ml. An outlet cap body (11) having a top wall (12) having a top wall (12) formed with a discharge hole (15) is formed at the cylindrical portion of the outlet cap body (11). part (2) to assembled fitting, the mouth tube portion (2) and the dispensing cap (11) according to claim 1, 2 or 3 has a configuration which forms Note overhead stream passage communicating the (P) and The squeeze container described. The content liquid (L) having a viscosity in the range of 0.5 to 10 Pa · s (500 to 10,000 cP) in a temperature range of −5 ° C. to normal temperature (23 ° C.) is stored and used. Or the squeeze container of 4.

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