KR101835645B1 - Manufacturing method of puff foam adjustable mixture ratio of open cell - Google Patents

Abstract

The present invention relates to a method for preparing a foam puff unit capable of adjusting the ratio of open and close cells. The foam puff unit can suitably adjust the ratio and hardness of the open and close cells in accordance with the types of the cosmetic products and usage purposes in preparing the foam puff unit. Accordingly, the foam puff unit can prevent an excessive amount of cosmetic products from being absorbed therein, adhesion parts from being peeled or hardened, and shrinking while having a soft texture and excellent hydrolysis properties. Also, the foam puff unit, which is molded in the shape of a foam block, can be suitably cut before use for various purposes, thereby preparing the foam puff unit for various purposes regardless of the thickness and shape of products. The foam puff unit can shorten the preparing process, be utilized in various fields such as medical magic foam pads and impact absorption pads for electronic products as well as being used as a cosmetic foam puff unit.

Description

TECHNICAL FIELD [0001] The present invention relates to a manufacturing method of a puff foam capable of adjusting the ratio of an open cell and a cross cell,

The present invention relates to a process for producing a puff foam, which enables a puff foam to be manufactured by appropriately adjusting the ratio and hardness of an open cell and a cross cell depending on the kind of a cosmetic product and a use purpose thereof.

Generally, puff foam for cosmetics is used as a means for applying a liquid or powder cosmetic to the skin, and is manufactured in various forms using various materials such as sponge and latex foam.

As a related prior art, Patent Document 1 discloses a process for preparing a compounding liquid in which (i) 100 to 400 parts by weight of a sodium sulfate solution in which sodium sulfate is mixed with a solvent is mixed with 100 parts by weight of an ether-based solvent-type polyurethane resin solution, ; (Ii) Coating and curing the blend prepared as described above on a release fabric woven with warp and weft, which is a synthetic fiber filament having a fineness of 300 to 450 denier, to prepare a coating fabric having a blend liquid coating layer formed on the release fabric A coating fabric manufacturing process; And (iii) peeling the releasing fabric from the coated fabric to produce a urethane foam sheet. The present invention also provides a process for producing a continuous urethane foam sheet for cosmetics.

In addition, Patent Document 2 discloses that 10 to 40% by weight of a solvent-type polyurethane resin, 0.01 to 8% by weight of an antifoaming agent, 0.1 to 13% by weight of a nonionic surfactant, And 20 to 80% by weight of an inorganic salt having a particle size of 50 to 150 탆 are added in an amount of 2 to 20% by weight with stirring in the stirring step, And a defoaming step of advancing the vacuum defoaming step to produce a blend liquid having a viscosity of 30,000 to 60,000 cps / 40 to 50 ° C; And a coating step of coating the coating material coated with the compounding liquid in a coagulation bath containing water at a temperature of 40 ° C to 60 ° C for 30 minutes to 60 minutes, A water washing step of washing the fabric with the coagulation bath in a water bath; and a thermal drying step of drying the fabric through the water bath at a temperature of 60 to 70 DEG C for 20 to 40 minutes, Manufacturing steps; A coating fabric buffing step in which the coated fabric having been subjected to the coating fabric manufacturing step is buffered using a buffing roller and then wound; And peeling the fabric from the buffed coating fabric and separating the sponge from the sponge sheet for puffing and winding up the sponge sheet.

However, the conventional puff foam prepared as described above is produced by using raw materials such as isocyanate, polyol, glycol, surfactant, silicone foaming agent, accelerator and the like, which are used as polyurethane raw materials. Too much swelling or swelling, or due to cosmetics, the adhesive part of the sponge layer and other materials (usually a three-layer structure of a normal puff foam) is easily peeled off, or cosmetics penetrate into other materials, And stiffness. In addition, the shrinkage phenomenon frequently occurs, and the touch feeling is very bad, and the hydrolysis resistance and the like are extremely deteriorated.

In recent years, puff foam developed in Japan has been manufactured using a material called "Nubicle", which is not environmentally friendly in that it uses a solution type polyurethane containing a harmful solvent called DMF (dimethylformamide) The open cell ratio of the three-dimensional structure is 95% or more, which also has the same problems as the conventional puff foam, and has a disadvantage that the manufacturing process is complicated and the cost is low.

Patent Document 1: Korean Patent Registration No. 10-1758074 entitled " Process for producing urethane foam sheet for continuous cosmetic puffing " Patent Document 2: Korean Patent Registration No. 10-1599236 entitled "Continuous Puff Sponge Sheet Manufacturing Method"

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a puff foam which can appropriately adjust the ratio and hardness of open cells and cross cells according to the kind of cosmetic product, It is possible to solve problems such as peeling of parts and stiffness, and also to have characteristics of soft touch feeling and excellent hydrolysis resistance without shrinkage.

The present invention relates to a process for producing a puff foam,

50 to 69% by weight of diphenylmethylene diisocyanate, 5 to 10% by weight of Modified Diisocyanate, 15 to 18% by weight of polyester polyol, polyester TMP (Polyester TMP) 1 to 5% by weight of trimethylol propane polyol and 10 to 17% by weight of polyether ethylene oxide glycol and reacting at 80 ± 5 ° C for 2 to 4 hours to prepare solution A (S100 );

A polypropylene glycol, a polyester polyol, an ethylene glycol, an ethylene glycol and a triethylenediamine in an amount of 54 to 73.9% by weight, 20 to 30% by weight, ethylene glycol, 0.1 to 0.6% 2 to 7% by weight of a polymer polyol, 1.0 to 1.9% by weight of a catalyst combination and 2 to 5% by weight of a surfactant combination were stirred at 60 to 70 ° C at a rate of 45 to 55 RPM for 2 to 4 hours, (S200);

85 to 95% by weight of a mixture of 5 to 15% by weight of the liquid A and 5 to 15% by weight of a mixture of ethylene glycol, glycerin and dipropylene glycol in a weight ratio of 6: 2.5: 1.5 was stirred and reacted at a speed of 900 to 1100 RPM for 55 to 65 minutes Preparing a liquid C as a crosslinking agent (S300); And

The liquid B and the liquid C are first mixed, and then the liquid A is added thereto and mixed at a stirring speed of 6,000 to 10,000 RPM for 3 to 5 seconds. To 100 parts by weight of the liquid A, 35 to 45 parts by weight , And 5 to 15 parts by weight of a solution C, and injecting the mixture into a mold at 40 to 50 DEG C, curing the mixture for 5 to 8 minutes and molding (S400). And a method of manufacturing a puff foam capable of controlling the ratio of the cross cells.

The catalyst combination is preferably formed by mixing diethanolamine catalysts such as TEDA (triethylenediamine), DMDEE (dimorpholinidiethylether) and DEA (diethanolamine) in a weight ratio of 3: 2: 5.

The surfactant combination may be a surfactant for controlling a cell, such as a polyalkylene oxide methylsiloxane copolymer, octamethylcyclotetrasiloxane, or polyoxyethylene nonylphenyl ether, : 7: 2 by weight.

The present invention makes it possible to manufacture a puff foam by appropriately adjusting the ratio and hardness of the open cell and the close cell depending on the type of cosmetic product and the use purpose, and thus the problem of excessive penetration of cosmetics, It is possible to solve the problems such as deterioration, and the effect of softness of the touch without shrinkage and excellent hydrolysis resistance.

In addition, by making the molded product in the form of a block foam suitable for various applications, it is possible to manufacture various forms of puff foam irrespective of the thickness or shape of the product and also to shorten the manufacturing process And can be utilized in various fields such as pads for cosmetics, pads for shock absorption of electronic products, pads for medical magazines, and the like.

1 is a process flow diagram illustrating a method of manufacturing a puff foam capable of adjusting the ratio of open cells to cross cells according to the present invention.
FIG. 2 is a photograph showing a cell structure of an embodiment and a comparative example according to the present invention.
3 is a photograph showing a slicing step of the embodiment according to the present invention

In order to achieve the above-mentioned effects, the present invention relates to a manufacturing method of a puff foam capable of adjusting the ratio of the open cells and the cross cells, and only the parts necessary for understanding the technical structure of the present invention are explained, And will be omitted so as not to obscure the gist of the invention.

Hereinafter, a method for manufacturing a puff foam capable of controlling the ratio of open cells to cross cells is described in detail as follows.

As shown in FIG. 1, the manufacturing method of a puff foam capable of adjusting the ratio of the open cell to the cross cell according to the present invention comprises the steps of producing liquid A (S100), producing liquid B (S200) (S300), and a step S400 of curing, forming, and demolding by combining the steps (S300).

Specifically, the step S100 may include a step of mixing 50 to 69% by weight of diphenylmethylene diisocyanate, 5 to 10% by weight of Modified Diisocyanate, 15 to 18% by weight of a polyester polyol, 1 to 5% by weight of an ester TMP polyol (TMP) and 10 to 17% by weight of a polyether ethylene oxide glycol are mixed and reacted at 80 ± 5 ° C for 2 to 4 hours to obtain a mixture of A If the content of the respective materials and the manufacturing conditions are out of the above ranges, there is a fear that the end NOC content of the liquid A is high and there is no soft touch feeling during the production of the foam and it is hardly formed, or the step S300 In the preparation of solution C, the viscosity of the cross-linking agent is increased due to the rapid reaction during the synthesis reaction, and the gelation phenomenon may cause defects. Particularly, when the content is low, the viscosity of the liquid A may increase, and due to the difference in mixing ratio, the hardness of the foam may be lowered due to the mixing failure during the production of the foam, and the internal cell may be cracked.

The step S200 may include the steps of: 54 to 73.9% by weight of polypropylene glycol, 20 to 30% by weight of a polyester polyol, 1.0 to 1.5% by weight of ethylene glycol, 0.1 to 3% by weight of triethylenediamine 0.1 2 to 4 wt.% Of a catalyst combination and 2 to 5 wt.% Of a surfactant combination at 60 to 70 ° C at a rate of 45 to 55 rpm and 2 to 4 wt.% Of a polymeric polyol, When the content of each of the above substances and the production conditions are out of the above range, the physical properties of the liquid B may be changed, and in particular, the weight ratio of the polypropylene glycol and the polyester polyol The polypropylene tends to have a tendency to decrease in physical properties such as tear and tensile strength, and when the weight of the ethylene glycol and the polymer polyol is out of the range, the hardness of the foam is too hard or too small The tree is not suitable. In addition, there is a fear that the ratio of the open cell and the cross cell to the puff foam and the hardness adjustment effect become insufficient in step S400.

On the other hand, the above-mentioned liquid B can be added with various pigments already known or functional additives (for example, nano silver, etc.) made of known inorganic substances or other nanoparticles to such an extent that mechanical pumping is possible. That is, it is possible to add various additives that are already known in accordance with the characteristics of the product, the kind of the cosmetic product, the intended use, and the like.

In addition, the catalyst combination plays an important role in determining the start time and the demold time of the reactants of the liquid A and the liquid B, and is added to determine properties such as tear, tensile, elongation and the like. The diethanolamine catalyst, TEDA (Triethylenediamine) , DMDEE (Dimorpholinidiethylether) and DEA (Diethanolamine) at a weight ratio of 3: 2: 5. If the type and the mixing ratio of the catalyst combination are out of the above ranges, the reaction proceeds too quickly, There is a fear that the lid can not be closed and there is a risk of flowing out. In particular, when a small amount is used, the reaction is so slow that demolding of the formed foam is difficult, and the rebound resilience and physical properties are sharply lowered.

In addition, the surfactant combination is a surfactant for controlling the cell, which is added for the structure-forming function of the microcell by a combination of an open cell and a closed cell. Examples of the surfactant combination include a polyalkylene oxide methylsiloxane copolymer, Octamethylcyclotetrasiloxane and polyoxyethylene nonylphenyl ether at a weight ratio of 1: 7: 2. When the type and mixing ratio of the surfactant combination are out of the above range, It is difficult to adjust the ratio of the open cell and the open cell to one microcell structure, and the cells may be roughened, so that the function may not be realized properly.

In step S300, 85 to 95% by weight of a mixture of 5 to 15% by weight of the liquid A and 5 to 15% by weight of a mixture of ethylene glycol, glycerin and dipropylene glycol in a weight ratio of 6: 2.5: And stirring the mixture for a minute to prepare a liquid C as a crosslinking agent. The mixing ratio of the ethylene glycol, glycerin and dipropylene glycol, the mixing ratio of the mixture and the liquid A, or the mixing ratio of the crosslinking agent C solution may not be manufactured properly.

In the step S400, the liquid B and the liquid C are mixed first, and then the liquid A is added thereto and mixed at a stirring speed of 6,000 to 10,000 RPM for 3 to 5 seconds. In 100 parts by weight of the liquid A, 35 to 45 parts by weight of a curing agent, and 5 to 15 parts by weight of a C solution. The mixture is injected into a mold at 40 to 50 ° C., cured and molded for 5 to 8 minutes and then demolded. do

On the other hand, as described above, when the liquid B is directly introduced without preparing the liquid C, that is, when the liquid B and the liquid C are mixed first, the film formed inside the cell is well blown. Thus, the ratio of the open cell to the cross cell The hardness can be adjusted. If the liquid B and the liquid C are not mixed first, the ratio and hardness of the open cell and the cross cell to the puff foam can not be controlled properly or evenly.

If the blending ratio of the liquid A, liquid B, and liquid C or the manufacturing conditions are out of the above range, there is a possibility that the ratio of the open cell and the cross cell to the puff foam and the hardness adjusting effect become insufficient.

In addition, the puff foam has a hardness (Asker F) of 50 to 55 by the above-described process, and the ratio of the open cell and the cross cell can be adjusted depending on the kind of the cosmetic product and the use purpose.

Hereinafter, the present invention will be described in detail with reference to examples thereof, but the present invention is not necessarily limited to the following examples.

1. Manufacture of puff foam

(Example 1)

The mixture was mixed with 69 wt% of diphenylmethane diisocyanate, 5 wt% of modifier diisocyanate, 15 wt% of polyester polyol, 1 wt% of polyester TMP polyol and 10 wt% of polyether polyol ethylene oxide, (S100) to prepare a solution A, and the solution A was prepared by adding 73.9 wt% of polypropylene glycol, 20 wt% of polyester polyol, 1.0 wt% of ethylene glycol, 0.1 wt% of triethylenediamine, 2 wt% of polymer polyol, 1.0 wt And 2% by weight of a surfactant combination were stirred at 60 RPM at 45 RPM for 2 hours to prepare a liquid B solution (S200). 5% by weight of the liquid A and 6: 2.5 by weight of ethylene glycol, glycerin and dipropylene glycol : 1.5) was stirred and reacted at 900 RPM for 55 minutes to prepare a liquid C as a crosslinking agent (S300). The prepared liquid B and liquid C were mixed first, and then A Add liquid The mixture was mixed at a stirring speed of 6,000 RPM for 5 seconds, and the mixture was mixed at a ratio of 35 parts by weight of the liquid B and 5 parts by weight of the liquid C based on 100 parts by weight of the liquid A. The mixture was injected into a mold at 40 캜 and cured and molded for 8 minutes (S400) to prepare a puff foam.

Wherein the catalyst combination is a mixture of TEDA, DMDEE and DEA in a weight ratio of 3: 2: 5 and the surfactant combination is a surfactant for controlling the cell comprising a polyalkylene oxide methyl siloxane copolymer, Cyclotetrasiloxane, and polyoxyethylene nonylphenyl ether were mixed at a weight ratio of 1: 7: 2.

(Example 2)

A mixture of 55% by weight of diphenylmethane diisocyanate, 8% by weight of modifier diisocyanate, 17% by weight of polyester polyol, 4% by weight of polyester TMP polyol and 16% by weight of polyether polyol ethylene oxide, (S100) to obtain a solution A, and a solution obtained by mixing 62.8 wt% of polypropylene glycol, 25 wt% of polyester polyol, 1.2 wt% of ethylene glycol, 0.5 wt% of triethylenediamine, 5 wt% of polymer polyol, 1.5 wt % Of surfactant A and 4 wt% of surfactant combination were stirred at 65 RPM at 50 RPM for 3 hours to prepare liquid B (S200). 10 wt% of liquid A and 6 wt% of ethylene glycol, glycerin and dipropylene glycol : 1.5) was stirred and reacted at a rate of 1000 RPM for 60 minutes to prepare a liquid C as a crosslinking agent (S300). The prepared liquid B and liquid C were mixed first, and then A Add liquid 40 parts by weight of the liquid B and 10 parts by weight of the liquid C were mixed with 100 parts by weight of the liquid A at a stirring speed of 10,000 RPM for 3 seconds. The mixture was poured into a mold at 45 캜 and cured and molded for 7 minutes (S400) to prepare a puff foam.

Wherein the catalyst combination is a mixture of TEDA, DMDEE and DEA in a weight ratio of 3: 2: 5 and the surfactant combination is a surfactant for controlling the cell comprising a polyalkylene oxide methyl siloxane copolymer, Cyclotetrasiloxane, and polyoxyethylene nonylphenyl ether were mixed at a weight ratio of 1: 7: 2.

(Example 3)

A mixture of 50 wt% of diphenylmethane diisocyanate, 10 wt% of modifier diisocyanate, 18 wt% of polyester polyol, 5 wt% of polyester TMP polyol and 17 wt% of polyether polyol ethylene oxide, (S100) to prepare a solution A, which was then mixed with 54 wt% of polypropylene glycol, 30 wt% of polyester polyol, 1.5 wt% of ethylene glycol, 0.6 wt% of triethylenediamine, 7 wt% of polymer polyol, 1.9 wt And 5 wt% of the surfactant combination were stirred at 70 rpm at a speed of 55 rpm for 4 hours to prepare a liquid B (S200). 15 wt% of the liquid A and 6 wt% of ethylene glycol, glycerin and dipropylene glycol : 1.5) was stirred and reacted at a speed of 1100 RPM for 65 minutes to prepare a liquid C as a crosslinking agent (S300). The prepared liquid B and liquid C were mixed first, and then A Add liquid 45 parts by weight of the liquid B and 15 parts by weight of the liquid C were mixed with 100 parts by weight of the liquid A at a stirring speed of 7,500 RPM for 4 seconds. The mixture was injected into a mold at 50 DEG C and cured and molded for 5 minutes (S400) to prepare a puff foam.

Wherein the catalyst combination is a mixture of TEDA, DMDEE and DEA in a weight ratio of 3: 2: 5 and the surfactant combination is a surfactant for controlling the cell comprising a polyalkylene oxide methyl siloxane copolymer, Cyclotetrasiloxane, and polyoxyethylene nonylphenyl ether were mixed at a weight ratio of 1: 7: 2.

The physical properties of Examples 1 to 3 are shown in Table 1 below.

division
unit
A sum B solution C solution Example 1 Example 2 Example 3 Example 1 Example 2 Example 3 Example 1 Example 2 Example 3 Exterior - Yellowish
Transparency
Liquid phase White
Viscous liquid White
Viscous liquid Yellowish
Transparency
Liquid phase White
Viscous liquid White
Viscous liquid Yellowish
Transparency
Liquid phase White
Viscous liquid White
Viscous liquid Viscosity CPS /
40 ℃ 300 400 450 300 400 500 1000 1200 1500 Cream
time minute 5 7 10 5 7 10 - - - freedom
firing
importance g / cc 0.10 0.12 0.15 0.10 0.12 0.15 - - - product
importance g / cc 0.10 0.12 0.15 0.10 0.12 0.15 - - - product
Hardness F type 20 35 45 20 30 45 - - - Seal
burglar % 10 35 50 10 20 50 - - - kidney % 200 250 300 200 250 300 - - - Demolding minute 5 6 8 5 7 8 - - - Viscosity: Measured with a Brookfield LVT # 2 spindle device (based on ASTM D4889 test)
Specific gravity: specific gravity measuring device (Yeongnam Scientific Research Institute) (volume measurement by measuring the amount of water flowing out by soaking the foam)
Tensile strength: Measured by Dumbbell Type C (ASTM D1564 test basis)
Height: measured by dumbbell dumbbell type (ASTM D1564 test standard)

(Comparative Example 1)

Nubicel product manufactured by Toyo Polymer Co., Ltd. was used.

2. Evaluation of puff form

The molded articles according to Examples 1 to 3 were subjected to first-order squeezing once or twice while controlling the thickness of the molded articles (thickness: 2 to 8 mm), followed by mixing the softeners with water at a second time, Adjust and squish. Then, the water was dried at 100 ° C to remove the inner film of the cell, and the surface of the inner cell was cut to a size of about 2 mm and the inner cell uniformity was confirmed. Then, the product was sliced as shown in FIG. In addition, the hardness and cell structure of the final product were confirmed, and the results are shown in [Table 2] and FIG. 2 below.

division Example 1 Example 2 Example 3 Comparative Example 1 Hardness
(soldier F) 50 52 55 40 Cell structure 2 2 2 2

As shown in Table 2, it can be seen that the puff foam according to the present invention can be manufactured by appropriately controlling the ratio and hardness of the open cell and the cross cell depending on the kind of the cosmetic product and the use purpose.

As described above, the manufacturing method of the puff foam capable of adjusting the ratio of the open cell to the cross cell according to the present invention is described through the preferred embodiments and its superiority is confirmed. However, those skilled in the art will appreciate that the following patent claims It will be understood that various modifications and alterations may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (4)

A method for producing a puff foam,
50 to 69% by weight of diphenylmethylene diisocyanate, 5 to 10% by weight of Modified Diisocyanate, 15 to 18% by weight of polyester polyol, Polyester TMP (Polyester TMP) 1 to 5% by weight of trimethylol propane polyol and 10 to 17% by weight of polyether ethylene oxide glycol and reacting at 80 ± 5 ° C for 2 to 4 hours to prepare solution A (S100 );
A polypropylene glycol, a polyester polyol, an ethylene glycol, an ethylene glycol and a triethylenediamine in an amount of 54 to 73.9% by weight, 20 to 30% by weight, ethylene glycol, 0.1 to 0.6% 2 to 7% by weight of a polymer polyol, 1.0 to 1.9% by weight of a catalyst combination and 2 to 5% by weight of a surfactant combination were stirred at 60 to 70 ° C at a rate of 45 to 55 RPM for 2 to 4 hours, (S200);
85 to 95% by weight of a mixture of 5 to 15% by weight of the liquid A and 5 to 15% by weight of a mixture of ethylene glycol, glycerin and dipropylene glycol in a weight ratio of 6: 2.5: 1.5 was stirred and reacted at a speed of 900 to 1100 RPM for 55 to 65 minutes Preparing a liquid C as a crosslinking agent (S300); And
The liquid B and the liquid C are first mixed, and then the liquid A is added thereto and mixed at a stirring speed of 6,000 to 10,000 RPM for 3 to 5 seconds. To 100 parts by weight of the liquid A, 35 to 45 parts by weight , And 5 to 15 parts by weight of a solution C, injecting the mixture into a mold at 40 to 50 ° C, curing the mixture for 5 to 8 minutes and molding (S400)
The catalyst combination is prepared by mixing diethanolamine catalysts such as TEDA (Triethylenediamine), DMDEE (Dimorpholinidiethylether) and DEA (Diethanolamine) in a weight ratio of 3: 2: 5,
The surfactant combination may be a surfactant selected from the group consisting of polyalkylene oxide methylsiloxane copolymer, octamethylcyclotetrasiloxane, and polyoxyethylene nonylphenyl ether in a molar ratio of 1: 7: 2, wherein the ratio of the open cells to the cross cells is adjustable. delete delete delete

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