JP5352211B2 - A shock absorber for cosmetics - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an impact absorbing tray for a cosmetic which is capable of preventing the cosmetic housed in an inner tray for the cosmetic from being cracked or chipped even when receiving an impact from the outside, and a compact container to which the tray is installed. <P>SOLUTION: (1) The impact absorbing tray for the cosmetic is the tray for absorbing an impact on the cosmetic housed inside the compact container, and the tray is formed of a thermoplastic resin independent air bubble foam and has a three-dimensional shape to be fitted along the shape of the inner tray for the cosmetic wherein the cosmetic is filled and housed. (2) The compact container has a tray part body and a lid body and is used by mounting the inner tray for the cosmetic housing the cosmetic on the recessed fitting part of the tray part body. The impact absorbing tray formed of the thermoplastic resin independent air bubble foam is formed in the three-dimensional shape to be fitted along the shape of the inner tray for the cosmetic and is installed so as to fill a gap between the inner tray for the cosmetic and the recessed fitting part of the tray part body. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a shock-absorbing saucer for cosmetics accommodated in a compact container, and a compact container provided with the saucer.

The compact container is a container for storing cosmetics such as a foundation. The compact container has a beautiful appearance as a cosmetic container and a compact shape that is easy to handle. Moreover, a compact container consists of a saucer part main body and a cover body, and is used by mounting | wearing the concave fitting part of the saucer part main body with the inner tray for cosmetics which filled and accommodated cosmetics.
On the other hand, cosmetics are solidified by filling and pressing into a cosmetic medium dish, or once the cosmetic is dissolved in a highly volatile solvent and filled into a cosmetic medium dish, the volatile solvent is heated, etc. It is stored in a compact container in a state where it has been removed, but especially when a cosmetic inner tray is mounted in a removable manner, the impact from the outside is transmitted to the inner tray without relaxation. Is done. Therefore, there is a high possibility that the cosmetic will be cracked or chipped if an impact is applied or dropped when the compact container is carried. A broken or chipped cosmetic is not preferable because it not only stains the inside of the compact container but also makes it difficult to remove the cosmetic in a puff or it is missing.

Conventionally, regarding shock absorption of a compact container, a cushioning material sheet is stuck between a compact container and a metal plate so as not to be peeled to give a cushioning function (Patent Document 1), and a structure having an elastic member is used. Holding a dish and having a buffer function (Patent Document 2), forming a projection smaller than a metal pan on the bottom of a compact container, and pasting a buffer material (Patent Document 3), container body and inner dish There are known those in which a spherical silicone gel is interposed therebetween (Patent Document 4).
However, in the conventional method, there is a problem that the compact container needs to be formed into a special shape, the compact itself becomes thick and not portable or looks good, and there are also those with insufficient shock absorbing function. there were.

Japanese Utility Model Publication No. 61-31690 JP 2003-235636 A JP 2006-55204 A JP 2007-29234 A

  The present invention is provided with a shock absorbing tray for cosmetics capable of preventing cracks and chipping from occurring in the cosmetic contained in the cosmetic middle dish even when subjected to an impact from the outside, and the tray. It is an object to provide a compact container.

That is, the present invention provides the following (1) and (2).
(1) A saucer that absorbs impacts on cosmetics contained in a compact container, the saucer comprising a closed cell foam of thermoplastic resin, and in the shape of a cosmetic intermediate dish filled with cosmetics A saucer for shock absorption of cosmetics, having a three-dimensional shape that fits along.
(2) A compact container that has a saucer body and a lid, and is used by mounting a cosmetic inner dish containing cosmetics on a recessed fitting portion of the saucer body, and is made of thermoplastic resin closed cells The shock-absorbing tray made of foam is formed into a three-dimensional shape that fits along the shape of the cosmetic inner tray, and fills the gap between the cosmetic inner tray and the recessed fitting portion of the tray main body. A compact container set up like this.

  According to the impact-absorbing tray and the compact container of the present invention, even when an impact is applied from the outside, it is possible to effectively prevent the cosmetic material accommodated in the compact container from being cracked or chipped.

DESCRIPTION OF EMBODIMENTS Embodiments of a cosmetic shock receiving tray and a compact container according to the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view showing an embodiment of a compact container provided with a shock absorbing tray according to the present invention, and FIG. 2 is an external perspective view showing an embodiment of the shock absorbing tray according to the present invention. FIG. 3 is a longitudinal sectional view of another embodiment of the compact container.

(Compact container)
As shown in FIG. 1, the compact container 10 includes a saucer body 11 and a lid 12 hinged to the edge of the saucer body 11, and the cosmetic 13 is, for example, a powder cosmetic foundation. The cosmetic intermediate dish 14 which is press-molded and filled and accommodated in the concave fitting part 16 of the saucer part main body 11 is used. Between the cosmetic intermediate dish 14 and the recessed fitting portion 16, a shock absorbing tray 15 which is a feature of the present invention is provided. A mirror 17 is attached to the inner surface of the lid 12.
A partition sheet (not shown) having a buffering effect can be interposed between the mirror 17 and the upper surface of the tray body 11. The shock absorbing tray 15 may be a tray with a lid (not shown), and the lid may be used as a substitute for the partition sheet. If comprised in this way, the impact absorption effect with respect to an upper surface direction can be exhibited, and there also exists an effect of not polluting a mirror.

In the embodiment of FIG. 1, the saucer part body 11 is a plastic saucer part having a substantially rectangular planar shape with a short side of about 68 mm and a long side of about 100 mm, and having a thickness of about 10 mm. On the upper surface of the main body 11, an accessory case 19 that accommodates accessories such as a puff 18 and a concave fitting portion 16 to which the inner dish 14 for cosmetics is mounted are formed side by side.
The lid body 12 has a substantially rectangular planar shape with a short side of about 68 mm and a long side of about 100 mm, and the upper surface with a thickness of about 5 mm is a curved surface, similar to the saucer body 11. It is a flat lid member made of plastic. The lid body 12 is rotatably coupled to an edge portion of one long side portion of the saucer portion main body 11 via a hinge portion 20, and is attached to a long side portion of the lid body 12 opposite to the hinge portion 20. Is provided with a locking piece 21 for locking the lid, and this locking piece 21 is detachably locked to a lid locking member 22 provided on the other long side portion of the tray body 11. Thus, the lid 12 can be opened and closed.

The concave fitting portion 16 of the tray body 11 is a fitting hole having a substantially rectangular planar shape with a short side of about 45 mm and a long side of about 50 mm and a thickness of about 8 mm.
The cosmetic intermediate dish 14 to be attached to the recessed fitting part 16 is a plastic or metal dish container having a substantially rectangular planar shape and having a depth of about 7 mm, and has an outer peripheral shape slightly smaller than the recessed fitting part 16. ing.
An impact absorbing tray 15 is provided between the cosmetic intermediate tray 14 and the recessed fitting portion 16.

The shock-absorbing tray 15 is made of a thermoplastic resin closed-cell foam and has a three-dimensional shape that fits along the shape of the cosmetic intermediate tray 14 filled with cosmetics, as shown in FIG. That is, the inner peripheral shape of the shock absorbing tray 15 is substantially the same as the outer peripheral shape of the cosmetic intermediate tray 14, and the outer peripheral shape of the shock absorbing tray 15 is substantially the same as the inner peripheral shape of the recessed fitting portion 16. is there. Since the shock absorbing tray 15 is compressed and deformed by its elasticity, it can be mounted so as to wrap the cosmetic medium tray 14. In the longitudinal sectional view of FIG. 3, the shock absorbing tray 15 covers the cosmetic intermediate plate 14 in a concave shape.
The thickness of the shock absorbing tray 15 is preferably 0.5 to 3 mm, more preferably 0.7 to 2.0 mm, and still more preferably 1.0 to 1.5 mm, from the viewpoint of impact absorbing power.
The shock absorbing tray 15 has its lower surface in contact with the upper surface of the recessed fitting portion 16 and its outer side portion is in close contact with the sidewall of the recessed fitting portion 16. 16 so as to be embedded in close contact with the gap with 16.

As described above, the shock absorbing tray 15 is slightly compressed in the compact container 10 and arranged in a state of maintaining elasticity, so that the cosmetic inner tray 14 rattles inside the recessed fitting portion 16. And the impact transmitted to the cosmetic 13 accommodated in the cosmetic intermediate dish 14 is suppressed by the cushion effect due to the elasticity of the shock absorbing tray 15, and the cosmetic 13 is cracked. And chipping can be effectively prevented.
In other words, the compact container 10 is highly likely to crack or chip in the cosmetics housed therein, particularly when the corners or side portions are subjected to an impact. According to the present invention, the shock absorbing tray 15 made of the thermoplastic resin closed-cell foam has a three-dimensional shape that fits along the shape of the cosmetic inner tray 14 filled with cosmetics. Even if an impact is applied to the side portion, it is possible to effectively prevent the cosmetic material from being cracked or chipped.

  The compact container 10 of the present invention and / or the cosmetic intermediate dish 14 accommodated in the compact container 10 are not limited to the above-described embodiment, and various modifications can be made. For example, the planar shape may be an oblong compact container 10 as shown in FIG. 4 or a circular cosmetic dish 14 as shown in FIG. 4, and the cosmetics accommodated in the compact container 10 are Without being limited to the foundation, other cosmetics such as blusher, eye shadow, and lipstick may be used.

(Thermoplastic resin closed cell foam)
The shock absorbing tray of the present invention comprises a thermoplastic resin closed cell foam (hereinafter also simply referred to as “resin foam”). Examples of the thermoplastic resin that is the material of the resin foam include polyolefin resins, polystyrene resins, polyester resins, polyurethane resins, and the like. Among these, polyolefin resins are preferable from the viewpoint of impact absorption, thermoformability, and the like.
Examples of polyolefin resins include low-density polyethylene, high-density polyethylene, polypropylene and the like, as well as various copolymers based on ethylene, such as ethylene-propylene copolymer, ethylene-butene copolymer, ethylene-propylene- Examples thereof include a diene copolymer, an ethylene-vinyl acetate copolymer, an ethylene-methyl acrylate copolymer, and an ethylene-ethyl acrylate copolymer. Among these, low-density polyethylene is more preferable from the viewpoints of impact absorption, flexibility, thermoformability, and the like.
Said thermoplastic resin can be used individually or in combination of 2 or more types.

The resin foam has a closed cell structure, and the expansion ratio is preferably 20 to 200 times, more preferably 40 to 120 times. If the expansion ratio is 20 times or more, the resin foam is excellent in flexibility and elasticity, and if the expansion ratio is 200 times or less, the impact absorbability is sufficient. The expansion ratio consists of the reciprocal of the apparent density measured by the method described in ISO7214: 1998 (MOD).
Moreover, the diameter of the closed cell contained in a resin foam becomes like this. Preferably it is less than 300 micrometers, More preferably, it is 5-100 micrometers.
The apparent density (based on JIS K 6400) of the resin foam is preferably 5 to 50 kg / m ³ , more preferably 8 to 40 kg / m ³ , and still more preferably 10 to ³⁰ kg / m ³ . If the apparent density is 5 kg / m ³ or more, the strength of the resin foam is sufficient, and if the apparent density is 50 kg / m ³ or less, the impact absorbability is sufficient.

The 25% compression hardness (based on ISO7214: 1998) of the resin foam is preferably 10 to 100 kPa, more preferably 20 to 70 kPa, and further preferably 25 to 60 kPa. If the 25% compression hardness is 10 kPa or more, the strength of the resin foam is sufficient, and if it is 100 kPa or less, the density of the resin foam is not too high and the shock absorption is sufficient.
In addition, from the viewpoint of the strength and impact absorbing power of the resin foam, the tensile strength (based on ISO7214: 1998) is preferably 100 to 600 kPa, more preferably 150 to 400 kPa, still more preferably 200 to 300 kPa, and the elongation is , Preferably 50 to 300%, more preferably 80 to 250%, still more preferably 100 to 200%, and compression set (24 hours) (according to ISO 7214: 1998) is preferably 4 to 15%, more Preferably it is 5-12%, More preferably, it is 6-10%.

(Manufacture of thermoplastic resin closed cell foam)
Examples of the method for producing a thermoplastic resin closed cell foam include (1) a foaming method using a chemical foaming agent or a physical foaming agent, and (2) a foaming method using a fluid in a supercritical state or a subcritical state. It is done.
The foaming method of (1) uses a low molecular weight organic foaming agent that decomposes at a predetermined temperature to generate a gas, and a foaming agent composed of a low boiling point compound such as butane or pentane, and a resin foam molding by an injection device. This is a method of forming a product. In this method, there is a possibility that a bad influence on the human body and nature due to the foaming agent and an odor due to the foaming agent may occur.
Therefore, the foaming method of (2) is preferred, but as a specific example of a suitable molding method, a core-back type mold is closed, and the melted state enters the inner cavity of the mold thus defined. After supplying the thermoplastic resin, the mold is core-backed to define a space in the cavity, and the foaming agent introduced into the space at a required pressure is infiltrated into the thermoplastic resin, and the required holding time. There is a method of obtaining the resin foam molded product molded into the shape of the cavity by expanding the foaming agent by reducing the pressure in the cavity after the elapse of time, and foaming the thermoplastic resin accompanying this. Details of this method are described in JP-A-2003-276045.

As another method, a block of thermoplastic resin is put into a molding kettle, and then the foaming agent is injected into the molding kettle in an environment where the foaming agent becomes a fluid in a supercritical state or a subcritical state, and left to stand. Then, the foaming agent is infiltrated and impregnated into the block of the thermoplastic resin, and then, after a required holding time, the molding kettle is decompressed and the impregnated foaming agent is expanded to form bubbles, There is a method for obtaining a thermoplastic resin foam.
After slicing the resin foam thus obtained, a resin foam molded product is produced by shaping by vacuum / pressure forming or the like.

The foaming agent is preferably an inert fluid such as nitrogen or carbon dioxide, and is preferably used in a supercritical state or a subcritical state. The foaming agent is stored in a container capable of storing an inert fluid in a supercritical state, introduced into a molding die through a supply pipe, and foamed.
Here, the supercritical state means that the pressure is equal to or higher than the critical pressure of the inert fluid (3.4 MPa in the case of nitrogen, 7.38 MPa in the case of carbon dioxide), and the temperature is a critical temperature (in the case of nitrogen, − 147 ° C., 31.1 ° C. in the case of carbon dioxide). In the supercritical state, the inert fluid has characteristics of both gas and liquid, and has a characteristic that it is very easy to diffuse in the substance because it has a higher density than gas and a lower viscosity than liquid.
The subcritical state is an inert fluid in a liquid state in which the pressure is higher than the critical pressure of the inert fluid and the temperature is lower than the critical temperature, and the pressure is lower than the critical pressure of the inert fluid and the temperature is the critical temperature. The above-described inert fluid in a liquid state, or a state in which both the temperature and the pressure are less than the critical point but close to this.

If an inert fluid in a supercritical state or a subcritical state is used as a foaming agent, a resin foam can be molded efficiently in a short time, and a dangerous gas or the like is not generated. There is an effect that it does not worsen. Moreover, the resin foam obtained becomes a high-quality resin foam free from odors and residues of decomposition products such as a foaming agent that is used as a taboo in cosmetics.
Furthermore, since there is no fogging phenomenon that causes fogging of glass or the like found in conventional resin foams, there is no possibility of fogging the mirror of the compact container.

  Adjustment of the expansion ratio, apparent density, and the like of the resin foam can be performed by adjusting the time for allowing the foaming agent to permeate and hold in the thermoplastic resin. That is, if the holding time is lengthened, the amount of the foaming agent penetrated into the thermoplastic resin is increased, so that the expansion ratio can be increased, and if the pressure of the foaming agent introduced into the cavity is adjusted, The size of the diameter can be adjusted. Furthermore, if the introduction pressure of the foaming agent is increased, the bubble diameter can be made finer and uniform.

(Shock absorber and compact container)
The shock-absorbing tray of the present invention is a tray that absorbs shocks to cosmetics contained in a compact container, and the saucer is made of a thermoplastic resin closed-cell foam and is filled with cosmetics. It has a three-dimensional shape that fits along the shape of the serving pan.
The thermoplastic resin closed-cell foam used in the present invention, particularly the polyolefin resin closed-cell foam, has the above-mentioned properties and is excellent in strength and processability. For example, a thin saucer having a thickness of 0.5 to 3 mm is used. It can be easily molded and can be molded according to various shapes of the cosmetic dish. Although there is no restriction | limiting in particular as a shaping | molding method of a saucer, The vacuum forming method and a vacuum pressure forming are simple and preferable.
The compact container of the present invention is a compact container that has a saucer part main body and a lid, and is used by attaching a cosmetic intermediate dish containing cosmetics to the recessed fitting part of the saucer part main body. The shock absorbing tray made of a closed cell foam of thermoplastic resin has a three-dimensional shape that fits along the shape of the cosmetic inner tray, and a gap between the cosmetic inner tray and the recessed fitting portion It is characterized by being installed so as to fill in.
For this reason, according to the impact-absorbing tray and the compact container of the present invention, it is possible to effectively prevent the cosmetics accommodated in the compact container from being cracked or chipped even when subjected to an impact from the outside. Can do.
Moreover, as a shape of a saucer, it is not restricted to the dish-shaped thing shown in FIG. 2, It can also be set as the dish shape with a lid | cover. By comprising in this way, the impact absorption effect can be exhibited also with respect to the impact from an upper surface direction, and the effect of not polluting a mirror can also be expected.

Examples 1 and 2
A polyethylene resin sheet was put into a molding kettle, impregnated with nitrogen in a supercritical state, and then decompressed to obtain a polyethylene resin closed cell foam in which closed cells were formed. The obtained foam has an expansion ratio of 67, an apparent density of 15 kg / m ³ , a 25% compression hardness of 37 kPa, a tensile strength of 200 kPa, an elongation of 130%, and a compression set (24 hours) of 7.0%. Met. The said sheet | seat was cut out to the flat plate of 1500x2000x50mm, and the saucer for impact absorption of thickness 1.0mm or 1.8mm was shape | molded by the concave vacuum pressure forming.
Moreover, as cosmetics, solid cosmetics (foundation) made of bengara, iron oxide, titanium oxide, talc, silicone powder, urethane powder, liquid paraffin, etc. were prepared.
Next, a compact container having a substantially rectangular planar shape with a short side of the tray body of 68 mm, a long side of 100 mm, a thickness of 10 mm, and a lid thickness of 5 mm (the thickness of the entire container is 15 mm) (see FIG. 1 and 2) are prepared, the cosmetic is placed in a cosmetic medium dish, pressed, solidified to a thickness of 5 mm, filled and accommodated, and then the shock absorbing tray (inner size is makeup) obtained above. (Same size as the outer plate of the food pan) is put on the cosmetic pan, and the bottom of the shock absorbing tray is attached to the tray body with double-sided tape to obtain the cosmetic housed in a compact container It was.
Comparative Example 1
A cosmetic contained in a compact container was obtained in the same manner as in Example 1 except that the bottom of the cosmetic intermediate dish was not adhered to the tray main body with a double-sided tape without using the shock absorbing tray.

Using cosmetics contained in the compact containers obtained in the above examples and comparative examples, (1) upright drop test, (2) inverted drop test, (3) side drop test, and (4) hinge drop A test was conducted. The results are shown in Table 1.
(1) The upright drop test is a test in which the bottom surface of the compact container is dropped toward the floor, and (2) the inverted drop test is a test in which the lid of the compact container is dropped toward the floor. Yes, (3) The side drop test is a test in which the cosmetic filling side of the compact container is dropped toward the floor (with the puff housing side facing upward), and (4) the hinge drop test is a compact container This is a test in which the hinge part side of the head is dropped toward the floor.
In the drop test, the number of drops until the solid cosmetic in the compact container is cracked (determined that cracks are also cracked) from the drop height shown in Table 1 according to the test method is recorded. . Under each condition, five samples were tested, and the average value of the number of drops until the cracks were reached was defined as the “average number of cracks”.

  From Table 1, it can be seen that in the compact containers of Examples 1 and 2, the number of drops leading to cracking of the solidified cosmetic material is markedly improved as compared with the compact container of the comparative example.

It is an external appearance perspective view which shows one embodiment of the compact container of this invention. It is an external appearance perspective view which shows one embodiment of the saucer for shock absorption of this invention. It is AA sectional drawing of the compact container (FIG. 1) of this invention. It is an external appearance perspective view which shows another embodiment of a compact container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10: Compact container 11: Receptacle part main body 12: Cover body 13: Cosmetics 14: Medium dish for cosmetics 15: Shock-absorbing saucer 16: Recessed fitting part 17: Mirror 18: Puff 19: Small article part 20: Hinge part 21: Locking piece 22: Lid locking member

Claims (5)

A shock-absorbing saucer that absorbs impact on cosmetics contained in a compact container, wherein the impact-absorbing saucer is made of a closed cell manufactured by a foaming method using a fluid in a supercritical state or a subcritical state. diameter consists of the following thermoplastic resin closed cell foam 300 [mu] m, the shape of the pan for the shock absorption is a three-dimensional shape to fit the cosmetics according to the shape of the pan in the filling accommodated cosmetic, the impact The inner peripheral shape of the absorption tray is substantially the same as the outer peripheral shape of the cosmetic medium tray, and the outer peripheral shape of the shock absorbing tray is substantially the same as the inner peripheral shape of the recessed fitting portion provided in the compact container. , Shock absorbing tray. The impact-absorbing saucer according to claim 1, wherein the thermoplastic resin closed-cell foam is a polyolefin resin closed-cell foam. The impact-absorbing saucer according to claim 1 or 2, wherein the expansion ratio of the thermoplastic resin closed-cell foam is 20 to 200 times. A compact container that has a saucer body and a lid, and is used by attaching a cosmetic inner dish containing cosmetics to a recessed fitting part of the saucer body, and is in a supercritical state or a subcritical state A shock-absorbing saucer made of a thermoplastic resin closed-cell foam having a closed cell diameter of 300 μm or less manufactured by a foaming method using a fluid is formed into a three-dimensional shape that fits along the shape of the cosmetic inner plate. The outer peripheral shape of the shock absorbing tray is substantially the same as the outer peripheral shape of the cosmetic medium tray, and the outer peripheral shape of the shock absorbing tray is substantially the same as the inner peripheral shape of the recessed fitting portion . A compact container installed so as to fill a gap between the inner tray and the recessed fitting portion of the tray body.   With the lower surface of the impact-absorbing saucer in contact with the upper surface of the recessed fitting portion, and the outer portion of the side wall of the impact-absorbing saucer being in close contact with the sidewall of the recessed fitting portion, The compact container of Claim 4 installed so that it might be closely_contact | adhered and embedded in the clearance gap with a recessed fitting part.

Images