JP5579205B2 - Application container - Google Patents

Description

  The present invention relates to an application container for applying a stored application liquid to an application surface.

  As a conventional application container, the application liquid is applied by attaching an application member to the mouth of a container main body that contains an application liquid for drugs, cosmetics, etc., and impregnating the application member with the application liquid to bring it into contact with the human body. The structure to do is known. As the application member, a sponge made of polyurethane is generally used. As another material, for example, Patent Document 1 discloses a hard porous body formed by sintering a synthetic resin powder such as polyethylene. ing.

Japanese Utility Model Publication No. 56-135451

  However, when a polyurethane sponge is used as the coating member, the coating member swells and bends greatly due to the impregnation of the coating solution, and the coating solution cannot be spread to the peripheral edge of the coating member, so that uniform coating is possible. There was a problem that was difficult. In particular, when a large-area coating member is used in order to facilitate a wide range of coating operations, the deformation of the coating member due to swelling also increases, and thus the above-described problem has become more prominent.

  On the other hand, when the hard porous material disclosed in Patent Document 1 is used, the coating solution is not easily released and a sufficient amount of coating cannot be obtained. In this case as well, there is a problem when the coating member is enlarged. It was obvious.

  Then, an object of this invention is to provide the application | coating container which can perform a wide range application | coating efficiently and favorably.

The object of the present invention is to provide a container body having a mouth part and an application member mounted on the mouth part, impregnating the application member with a coating solution contained in the container body, An application container capable of applying an application liquid by bringing it into contact with an application surface, wherein the application member is made of low density polyethylene, has an average pore diameter of 50 to 180 μm, and a bulk density of 0.15 to 0.15. This is achieved by a coating container having a diameter of 0.25 g / cm ³ and a diameter of 23 mm or more.

  In this coating container, the coating member preferably has a thickness of 0.5 to 3.5 mm.

  Moreover, it is preferable that the said application member consists of an open-cell foam.

  ADVANTAGE OF THE INVENTION According to this invention, the application | coating container which can perform a wide range application | coating efficiently efficiently can be provided.

It is a side view which shows the application container which concerns on one Embodiment of this invention in a partial cross section. It is a top view of the opening | mouth part in the application | coating container shown in FIG.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side view showing a partial cross section of an application container according to an embodiment of the present invention. The coating container 1 includes a container main body 10 that stores a coating liquid. The container main body 10 has a mouth 20 attached to a circular opening end 12.

  The mouth portion 20 includes an inner cylinder 21 and an outer cylinder 22 arranged concentrically, and a receiving seat 23 on which an application member 14 to be described later is arranged. 23, the front end side is covered and integrated. The seat 23 has a discharge port 24 in the center.

  A ring-shaped locking piece 25 is provided on the back side of the seat 23, and a holding cylinder 26 is sandwiched between the locking piece 25 and the inner cylinder 21. One end side of a spring material 27 formed in a spiral shape is fixed to the base end portion of the holding cylinder 26, and a valve body 28 is attached to the other end side of the spring material 27. The valve body 28 is provided with a pressing piece 29, and the urging force of the spring material 27 causes the shoulder portion of the valve body 28 to contact the receiving seat 23 in a state where the pressing piece 29 protrudes from the discharge opening 24, thereby 24 is closed, and a gap is formed between the valve element 28 and the receiving seat 23 by the pressing of the pressing piece 29, and the coating liquid flows out between the notch 29 a of the pressing piece 29 and the discharge port 24. It is configured as possible.

  The inner cylinder 21 is reinforced by reinforcing pieces 30 arranged at equal intervals between the outer cylinder 22 along the outer circumferential direction, and the container body 10 is connected to the inner cylinder 21 via a screw portion 21a formed on the inner circumferential surface. Screwed into the open end 12.

  The receiving seat 23 includes an annular raised portion 231 centered on the discharge port 24 on the surface side. The raised portion 231 is smoothly curved in a bowl shape from the discharge port 24 toward the top portion 231a to form a storage portion 232 inside, and the outside of the top portion 231a is inclined to incline radially outward. It has a surface 231b. Further, as shown in a plan view in FIG. 2, the raised portion 231 is formed with guide grooves 231 c that extend radially from the discharge port 24.

  An annular dam 233 is provided concentrically with the bulge 231 outside the bulge 231 on the surface of the receiving seat 23, and a holding groove 234 is formed between the bulge 231 and the dam 233. Yes. The height of the dam portion 233 is lower than the height of the raised portion 231, and the top portion of the dam portion 233 is located on a substantially extension of the inclined surface 231 b of the raised portion 231.

  The applicator container 1 is provided with a disc-shaped applicator member 14 on the surface side of the seat 23. The application member 14 is covered when not in use by a cap 18 that is detachably screwed to a screw portion 22 a formed on the outer peripheral surface of the outer cylinder 22. In the present embodiment, the diameter of the application member 14 is larger than the outer diameter of the opening end 12 of the container body 10, and the area of the application member 14 is increased to facilitate a wide range of application.

  The application member 14 is made of an elastic material as will be described later, and the peripheral portion is engaged by fitting the locking ring 16 to the outer peripheral edge of the receiving seat 23 while being placed on the surface side of the receiving seat 23. It is clamped between the retaining ring 16 and the receiving seat 23. In this state, the back surface of the application member 14 is in contact with the top of the pressing piece 29, the raised portion 231, and the dam portion 233. The contact position between the top portion 231a of the raised portion 231 and the coating member 14 is preferably near the central portion in the radial direction. For example, the raised portion 231 is preferably provided so that the top portion 231a is located on a circle having a radius of about 10 mm. Moreover, it is preferable that the fixing position in the peripheral part of the application | coating member 14 is lower than the top part 231a of the protruding part 231 at least.

In this embodiment, the coating member 14 is made of low-density polyethylene that is excellent in the absorption and release properties of the coating liquid and that has good strength and touch. The low density polyethylene may be either a high pressure method low density polyethylene or a linear low density polyethylene, and the density is usually 0.910 to 0.930 g / cm ³ .

  As a result of studying various application members 14 made of low-density polyethylene, the present inventors have found that the average pore diameter and bulk density are important parameters in order to perform good application over the entire surface of the application member 14. Was found by experiments.

That is, if the average pore diameter of the coating member 14 is too large, the retention of the impregnated coating solution is reduced and liquid dripping is likely to occur. 50 to 180 μm is preferable, 55 to 160 μm is more preferable, and 90 to 150 μm is still more preferable. The average pore diameter in this specification is a value measured by a mercury intrusion porosimeter. Further, since the bulk density of the coating member 14 (value obtained by dividing the weight of the coating member by the apparent volume) is too large, the permeability and the release property are lowered, whereas when it is too small, the retention of the coating solution is lowered. preferably 0.15~0.25g / cm ^3, more preferably ^{0.17~0.22g / cm 3, 0.19~0.21g / cm} 3 is more preferred.

  Furthermore, the coating member 14 is preferably composed of an open cell foam having an open cell ratio measured in accordance with ASTM D 1940-62T of 70% or more, thereby further improving the absorption and release properties and retention of the coating liquid. Can be good. Specific examples of the open-cell foam made of low-density polyethylene include “MAPS” manufactured by Inoac Corporation.

  When the thickness of the coating member 14 is too large, deformation due to swelling tends to be large, and the release property of the coating solution also decreases. On the other hand, when the thickness is too small, the touch is deteriorated, and 0.5 to 3.5 mm is preferable. 5-2.5 mm is more preferable, and 1.7-2.0 mm is still more preferable.

  According to the application container 1 having the above configuration, the cap 18 is removed and the surface of the application member 14 is pressed against the surface to be applied such as the skin, whereby the valve body 28 is pressed via the application member 14 and the container The coating liquid stored in the main body 10 flows out from the gap between the cutout portion 29 a of the pressing piece 29 and the discharge port 24 and is stored in the storage portion 232. The coating member 14 is mainly impregnated with the coating solution from the central portion, but is fixed at the peripheral portion by the locking ring 16 in a state where the back surface is supported by the raised portion 233. Even when it is used, it is possible to prevent the gap between the peripheral portion and the seat 23 from expanding due to swelling. As a result, the coating liquid supplied to the storage unit 232 can be reliably spread to the peripheral edge of the coating member 14, and coating using the entire surface of the coating member 14 can be performed efficiently. Such an effect is remarkable when the diameter of the application member 14 is 23 mm or more, and particularly, a diameter of 28 mm or more is preferable, and a diameter of 36 mm or more is more preferable. The upper limit of the diameter of the application member 14 is practically about 45 mm.

  In the present embodiment, since the guide groove 231 c is formed in the raised portion 231, the coating liquid supplied to the storage portion 232 can be easily guided to the peripheral portion of the coating member 14. Furthermore, since the inside of the raised portion 231 is smoothly curved in a bowl shape, the coating liquid in the storage portion 232 easily flows out in the radial direction beyond the raised portion 231 due to this.

  In the present embodiment, since the dam portion 233 is provided outside the raised portion 231, the coating liquid guided to the peripheral portion of the application member 14 is retained between the raised portion 231 and the dam portion 233. 234. As a result, the impregnation of the coating liquid at the peripheral portion of the application member 14 is further promoted, and liquid dripping from the outer peripheral edge of the application member 14 can be reliably prevented.

  Further, in the present embodiment, as described above, since the use feeling is obtained, the deformation due to swelling is small, and the application member 14 having good absorption and release properties and retention of the application liquid is used. Even if the coating member 14 is enlarged, an appropriate amount of coating solution can be supplied from the entire surface of the coating member 14, and a wide range of coating can be performed efficiently and satisfactorily.

  As mentioned above, although one Embodiment of this invention was explained in full detail, the specific aspect of this invention is not limited to the said embodiment. For example, the configuration of the receiving seat 23 is not limited to that of the present embodiment, and may be the receiving seat 23 having a flat surface. In addition, in a conventional application container in which an application member is attached to the mouth portion of the container body, the application member can be replaced with that of the present embodiment. The shape and size of the application member can be appropriately changed according to the purpose of use.

  The present invention will be described in further detail based on examples and comparative examples. However, the present invention is not limited to the following examples.

  The coating container shown in FIG. 1 was used, and the material, thickness, average pore diameter, and bulk density of the coating member were variously changed, and the releaseability, retention, usability, and strength of the coating solution were examined. The results are shown in Table 1. The application member used was a disk-shaped member having a diameter of 44 mm. As the low density polyethylene, “MAPS” manufactured by Inoac Corporation was used.

DESCRIPTION OF SYMBOLS 1 Application container 10 Container main body 14 Application member 20 Mouth part 23 Receiving seat 231 Raised part 232 Reserving part 233 Weir part 234 Holding groove 24 Discharge port

Claims (3)

A container body having a mouth portion; and an application member mounted on the mouth portion, the application member contained in the container body is impregnated in the application member, and the application member is brought into contact with the surface to be coated. By the application container which can apply the coating liquid,
The application member is an application container made of low-density polyethylene, having an average pore diameter of 50 to 180 μm, a bulk density of 0.15 to 0.25 g / cm ³ , and a diameter of 23 mm or more.   The coating container according to claim 1, wherein the coating member has a thickness of 0.5 to 3.5 mm.   The said application | coating member is an application | coating container of Claim 1 or 2 consisting of an open-cell foam.

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