JP2019208745A - Makeup puff - Google Patents

Abstract

To provide a makeup puff securing sufficient strength so that a pinching surface and a use-surface may not be separated when in use, even while securing durability of the pinching surface in itself.SOLUTION: A makeup puff is provided in which sufficient strength is secured so as not to be separated each other by heat fusion bonding between the pinching surface when in use and the use-surface, even while securing itself durability by constituting a pinching surface in itself of a makeup puff with a thermoplastic polyurethane (TPU) of a series of ester, and the bonding strength is significantly improved and the handle 4 may not fall even when wire-bonding to the terminal of the pinching surface 2 by constituting a handle 4 of a pinching surface 2 by the TPU of the series of ester being the same as the pinching surface 2. The makeup puff comprises a use-surface formed of the polyurethane, the pinching surface 2 formed of the TPU, and a cushion foam 3 filled between the use-surface 1 and the pinching surface 2. A frame region between the use-surface 1 and the pinching surface 2 is bonded each other by heat fusion. The use-surface 1 and the pinching surface 2 are bonded by the cushion foam 3 and the heat fusion, respectively.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a cosmetic puff.

  Cosmetic puffs are used to apply cosmetics to the skin. A normal puff is formed by forming a cover made of a polyurethane material with a use surface and a gripping surface, and a cushion foam inserted therebetween.

  By the way, the conventional puff frequently undergoes a phenomenon in which hydrolysis occurs and cracks propagate and break as the use time elapses. Therefore, Korean Published Patent No. 10-2017-0125661 (prior art document 1) discloses a technique for forming a gripping surface with ordinary ether series thermoplastic polyurethane (TPU) in order to reduce hydrolysis. ing.

However, a normal ether series TPU has a density of about 1 g / cm ³ and a hardness of about 75 Shore A. However, the stretch ratio and the tensile strength are very low, and it depends on the cosmetics. Even if hydrolysis destruction is prevented, there is a problem that a phenomenon in which a gripping surface and a use surface are separated during gripping is frequently generated. As a result, the ether type TPU has a problem that the surface is slippery and not formed beautifully, and the use surface is easily contaminated.

  On the other hand, a grip for gripping is generally attached to the gripping surface of the cosmetic puff. In the conventional technique of Korean Patent No. 10-123576 (Prior Art Document 2), as a conventional method of forming a handle on a cosmetic puff, a band is used for the puff, and then reverse sewing is performed using equipment such as a sewing machine. Or, after making the band and the puff correspond, it is a general method to apply heat to perform thermoforming.

  However, such a conventional method of attaching the handle has to be equipped with a sewing machine or the like, and when performing reverse stitching with a sewing machine or the like, the quality of the reverse stitching portion is degraded by the gap of the sponge-type puff and the handle is There was a problem that it easily dropped from the puff, resulting in product defects and inconvenience in use.

  Also, the method of thermoforming is that the latex material of the puff is cured and hardened by heat, and due to the characteristics of the puff that touches the skin, scratches are generated on the makeup surface due to the hardened adhesion site and thermoforming The quality of the product was not excellent and the product defect rate was high. Prior art document 2 discloses a method of attaching a separate double-sided adhesive layer to the end of the handle and bonding it to the gripping surface. However, a cost increase problem due to an additional process is induced, and There was a problem that the adhesive strength could not be realized to the extent that the handle part was not detached during use.

Korean Published Patent No. 10-2017-0125661 Korean Registered Patent No. 10-123576

  The present invention is for solving the problems of the prior art described above, and an object of the present invention is to prevent the gripping surface and the use surface from being separated during use while ensuring the durability of the gripping surface itself. A cosmetic puff having sufficient strength is provided.

  The present invention also provides a cosmetic puff having a markedly improved adhesive strength on the gripping surface handle.

  A cosmetic puff according to an aspect of the present invention includes a use surface formed of polyurethane, a gripping surface formed of an ester series thermoplastic polyurethane (TPU), and a cushion foam filled between the use surface and the gripping surface. In other words, the area between the use surface and the gripping surface is joined to each other by thermal fusion, and the use surface and the gripping surface are joined to the cushion foam by thermal fusion, respectively.

At this time, the TPU may have a thickness of 120 to 180 μm, a density of 1.15 to 1.25 g / cm ³ and a hardness of 80 to 90 Shore A.

  In addition, the use surface may be made of rubicel or non-latex polyurethane.

  The cosmetic puff may be formed by preheating the gripping surface at 130 to 145 degrees for 25 to 30 seconds, preheating the working surface at 160 to 175 degrees for 25 to 30 seconds, and then heat-sealing each other. .

  The cosmetic puff may further include a handle, and the handle may be formed of the same material as the gripping surface and thermally bonded to the gripping surface.

  In addition, the handle may be formed in a form of line bonding between the grip surface and the end.

  In addition, the adhesive strength at which the handle is separated from the gripping surface may be 20 kgf or more.

  In the present invention, the gripping surface itself is made of an ester series TPU to ensure durability, but sufficient strength is ensured so that the gripping surface and the use surface are not separated from each other by thermal fusion bonding during use. The

  In addition, the present invention remarkably improves the bonding strength even when the gripping surface handle is made of an ester series TPU and is line-bonded to the end of the gripping surface, so that the handle does not drop.

It is a perspective view of the cosmetic puff of one Example of this invention. It is sectional drawing which showed the cross section of the AA 'area | region of FIG. 1 so that it might understand.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the embodiments. While the present invention can be modified in various ways and can have various embodiments, specific embodiments will be described in detail with reference to the drawings. However, this is not intended to limit the present invention to the specific embodiments, but should be understood as including all modifications, equivalents or alternatives that fall within the spirit and scope of the present invention. Don't be.

  Terms including ordinal numbers such as first, second, etc. can be used to describe various components, but the components are not limited by the terms. The terms are used only to distinguish one component from another.

  For example, the first component can be named with the second component without departing from the scope of the present invention, and similarly, the second component can also be named with the first component. The term and / or includes a combination of a plurality of related listed items or an item of a plurality of related described items.

  Unless defined otherwise, all terms used herein, including technical or scientific terms, are identical to those commonly understood by those with ordinary skill in the art to which this invention belongs. Have meaning. The same terms as defined in commonly used dictionaries should be construed as having a meaning consistent with the meaning possessed in the context of the related art and are ideal unless explicitly defined in this application. Is or is not interpreted in an overly formal sense.

  Hereinafter, a cosmetic puff according to an embodiment of the present invention will be described. FIG. 1 is a perspective view of a cosmetic puff according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the AA ′ region of FIG.

  Referring to the drawings, a cosmetic puff 10 according to an embodiment of the present invention includes a use surface 1, a gripping surface 2, and a cushion foam 3, and may further include a handle 40 as shown. At this time, the area between the use surface 1 and the gripping surface 2 is joined to each other by heat fusion, and the use surface 1 and the gripping surface 2 are joined to the cushion foam 3 by heat fusion, respectively.

  The use surface 1 is that the cosmetic puff (P) is an ordinary latex material, ENBIAL (NBR; NITRILE BUTADIENE RUBBBER), ESBIAR (SB; It may be formed of any one of NATURAL RUBBER, RUBYCELL (wet URETHANL), cotton velour (COTTON VELOUR), and a thermoplastic elastomer, or may be formed of a non-latex material. However, it may be desirable to include a relatively thermoplastic elastomer for thermal fusion with the gripping surface described below. However, the present invention is not limited to this. The cushion foam 3 is filled between the use surface 1 and the gripping surface, but can be formed of polyurethane foam.

  At this time, after using the polyurethane mixture on the substrate, the use surface 10 is solidified again, and the polyurethane and the entire substrate are washed with water to remove the additives to form fine pores. It is formed by drying. The micropores significantly increase the breathability and flexibility of the cosmetic puff. In addition, the fine pores prevent the cosmetic oil from remaining and significantly reduce the phenomenon that the puff contains the cosmetic oil.

  Here, the mixed liquid containing polyurethane is formed by mixing an additive containing at least one of a polyurethane resin composition and sucrose, an inorganic salt, starch, and a polyhydric alcohol. At this time, sucrose or an inorganic salt is water-soluble, and sugars, chlorides such as sodium, potassium, magnesium, calcium, and sulfuric acid can be used as those having the predetermined particle size distribution. At this time, when sucrose or an inorganic salt is used as an additive, it is more advantageous for exfoliating the substrate in the subsequent step to further include a polyhydric alcohol. The polyhydric alcohol refers to alcohols in which a plurality of hydrocarbon hydrogens are switched with hydroxy groups.

  The gripping surface 2 is formed of an ester series thermoplastic polyurethane (TPU). The thermoplastic polyurethane (TPU) is a compound obtained by addition reaction of an isocyanate and a polyol, and is a linear polymer as a rubber elastic polymer having an urethane bond in a molecular structure. High resilience, mechanical rigidity, wear resistance, oil resistance, chemical resistance, and cold resistance are excellent in the middle region between rubber and plastic. In addition, blending with other resins is easy, and a general thermoplastic resin molding machine can be used by mixing with other resins in the form of pellets. Since it has such properties as an elastomer, it can be broken or not cracked by some external force, and it has very good compatibility or adhesion to a urethane sealant. An unusual molding material with excellent wear resistance, flexibility, and discoloration resistance, but excellent tensile strength, especially excellent mechanical properties and extrusion molding, injection molding, calendar molding, etc. Easy processability. In addition, TPU is excellent in tension, restoring force and elasticity, has high durability, cannot wear well, is harder than silicon, and does not stick well with dust.

However, the ether series TPU is formed at a density of about 1 g / cm ³ , its hardness is formed at about 75 Shore A, its stretching ratio and its tensile strength are very low, and the destruction of hydrolysis by cosmetics is not Even if this is prevented, there is a problem that a phenomenon that the gripping surface and the use surface are separated frequently during gripping use is frequently generated. As a result, the ether type TPU has a problem that the surface is slippery and not formed beautifully, and the use surface is easily contaminated. Therefore, in the cosmetic puff according to one embodiment of the present invention, the material of the holding surface is formed of an ester series thermoplastic polyurethane (TPU).

At this time, it is most preferable that the gripping surface has a thickness of 120 to 180 μm, a density of 1.15 to 1.25 g / cm ³ , and a hardness of 80 to 90 Shore A. More preferably, the hardness is preferably 85 to 90 Shore A or more in order to ensure the durability.

Experimental example 1
When the thickness of the working surface was 150 μm and the hardness was 88 Shore A, the tear strength was measured according to ASTM D1004 standard against the density of TPU. Comparative Examples 1 and 2 prepared specimens having a relatively high density among ether series thermoplastic polyurethanes, and Examples 1 to 3 and Comparative Examples 3 to 4 prepared ester series thermoplastic polyurethane specimens. did

比較例１、２は、エーテル系列であるので、密度が高い場合にも破れ強度が非常に脆弱に分布することを分かったし、比較例３、４の場合には製造時に相対的な成形圧縮力の増加によって実験中でクラックが発生することを見る時破れ強度はさらに低いことで現われた。

Since Comparative Examples 1 and 2 are ether series, it was found that even when the density is high, the breaking strength is very weakly distributed. When it was observed that cracks occurred in the experiment due to the increase in force, the tear strength appeared even lower.

  On the other hand, in the cosmetic puff according to the embodiment of the present invention, the areas of the use surface 1 and the gripping surface 2 are joined to each other by heat fusion. For this purpose, the gripping surface 2 is preheated at 130 to 145 degrees for 25 to 30 seconds, the working surface is preheated at 160 to 175 degrees for 25 to 30 seconds, and then the heat-bonded areas are mutually heat-sealed. Since the heat sealing is performed by arranging them in between, a space is not formed between the use surface, the gripping surface, and the cushion foam, and a perfect adhesion feeling is produced.

  On the other hand, the cosmetic puff according to the present embodiment further includes a handle 4. The handle is made of ester TPU, which is the same material as the gripping surface 2. Although the handle is heat-sealed to the end of the gripping surface, it can be heat-sealed at the same time as the use surface 1 and the gripping surface 2 are heat-sealed. At this time, it is desirable that the handle 4 is heat-sealed only to the gripping surface 2 in order to avoid a side effect that the use surface 1 having a relatively low hardness is cured by deterioration. At this time, since the handle 4 and the gripping surface 2 are formed of the same material, it was confirmed that a very strong adhesive force was applied.

Experimental example 2
After manufacturing a handle with the specimen in Experimental Example 1, the adhesive strength separated from the grip surface was measured. The test was conducted using a 1605HTP equipment manufactured by Aikoh, Japan, with a measurement range of 0 to 50 kgf and speeds of 1, 5, 10, 20, and 30 mm / min. At this time, the measurement stroke was 150 mm.

比較例１、２の場合には、１３または１５ｋｇｆの荷重で把持面との熱融着で接着された部分が落ちたし、比較例４は４５ｋｇから落ちた。これは、エステル系列とエーテル系列の特性に起因した結果で見えて、実施例１乃至３と比較例３の場合にはすべての荷重で接着面が落ちなくて非常に力強い接着力を具備していることが確認された。また、実施例１乃至３の場合に取っ手の末端が把持面の末端とほとんど線結合の形態で接着されていたにも大人男性の非常に強い力でも落ちない強度が確保されることを分かった。

In the case of Comparative Examples 1 and 2, the part adhered by thermal fusion with the gripping surface dropped with a load of 13 or 15 kgf, and Comparative Example 4 dropped from 45 kg. This can be seen as a result due to the characteristics of the ester series and the ether series. In the case of Examples 1 to 3 and Comparative Example 3, the adhesive surface does not drop at all loads and has a very strong adhesive force. It was confirmed that In addition, in Examples 1 to 3, it was found that the end of the handle was bonded to the end of the gripping surface in a form of almost line connection, but the strength that would not drop even with the extremely strong force of an adult male was secured. .

  As described above, the present specification and drawings disclose the preferred embodiments of the present invention, and even if specific terms are used, this merely explains the contents of the present invention in an easy manner. It is used in a general sense to aid understanding and is not intended to limit the scope of the invention. In addition to the embodiments disclosed herein, other modifications based on the technical idea of the present invention can be carried out to those who have ordinary knowledge in the technical field to which the present invention belongs. It is self-explanatory.

1 working surface 2 gripping surface 3 cushion foam 4 handle

Claims (7)

Use surface made of polyurethane,
A gripping surface formed of an ester series thermoplastic polyurethane (TPU), and a cushion foam filled between the use surface and the gripping surface,
A cosmetic puff characterized in that the area between the use surface and the gripping surface is joined to each other by thermal fusion, and the use surface and the gripping surface are joined to the cushion foam by thermal fusion, respectively. 2. The cosmetic puff according to claim 1, wherein the TPU has a thickness of 120 to 180 μm, a density of 1.15 to 1.25 g / cm ³ , and a hardness of 80 to 90 Shore A. ³ .   The cosmetic puff according to claim 2, wherein the use surface is made of rubicel or non-latex polyurethane.   The cosmetic puff is formed by preheating the gripping surface at 130 to 145 degrees for 25 to 30 seconds, preheating the working surface at 160 to 175 degrees for 25 to 30 seconds, and then heat-sealing with each other. The cosmetic puff according to claim 3.   The makeup puff according to claim 1, wherein the makeup puff further includes a handle, and the handle is formed of the same material as the grip surface and is heat-sealed to the grip surface.   6. The cosmetic puff according to claim 5, wherein the handle is formed in a form of line bonding at the grip surface and the end.   The cosmetic puff according to claim 6, wherein an adhesive strength at which the handle is separated from the grip surface is 20 kgf or more.

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