TW201402043A - Method for absorption of liquid state contents - Google Patents

Abstract

Disclosed is a method for absorption of liquid state contents, comprising introducing liquid state contents and an absorbent to a container and kneading them by applying shear stress at an angle of 20-80 DEG. According to the method for absorption of liquid state contents, it is possible to absorb liquid state contents having various viscosities to absorbents having various forms, when absorbing liquid state contents having a relatively high viscosity to an absorbent. Therefore, it is possible to allow the liquid state contents contained in the absorbent to be ejected in an adequate amount, to absorb even highly viscous liquid state contents with ease, and to perform efficient absorption regardless of the particular type and pore size of an absorbent material.

Description

Method of absorbing liquid contents

The present invention relates to a method for absorbing liquid contents. More particularly, the invention relates to a method for absorbing liquid contents comprising kneading a liquid content and an absorbent body by applying shear stress to cause the cosmetic to be absorbed by the absorbent body.

There are already cosmetics with UV protection on the market that include viscous cosmetic contents that are absorbed by absorbent bodies such as sponges. In the process of absorbing the cosmetic contents, the absorbent body is embedded in a compact container, and then the contents are sprayed thereon, or the contents are placed in a compact container and introduced into the absorbent body, and then pressed several times to make the contents It can be naturally absorbed into the absorber. This process is done by an automated process. Therefore, whether the contents are sufficiently absorbed or not absorbed by the absorbent body depends only on the appearance. In particular, when highly viscous contents are absorbed, depending on the decisiveness of appearance, it may not be important. In addition, mechanical spraying or pressing is usually used, but in this case, the highly viscous contents are not easily absorbed due to the small or poor interface characteristics of the absorbent body.

If the highly viscous content is not sufficiently absorbed by the absorbent body, bubbles may be generated during use, or because a sufficient amount of the contents are not absorbed into the absorbent body, the contents may be separated from the absorbent body, and therefore, by   It is impossible for a puff to obtain a sufficient amount of content, and it is possible to obtain agglomerated contents.

[references]

Patent Document : Korean Patent Publication No. 10-2000-0013194.

【technical problem】

The technical problem to be solved by the present invention is to provide a method for absorbing liquid contents, comprising introducing a liquid content and an absorbent body into a container, and kneading by applying a shear stress at an angle of 20-80°. Even if the highly viscous contents may be easily absorbed, the efficient absorption of the liquid contents can be accomplished regardless of the specific type and pore size of the absorbent body material.

[Technical Solution]

In a general aspect, a method for absorbing liquid contents is provided, comprising adding a liquid content and an absorbent body to a container and applying a shear stress at an angle of 20 to 80 to knead.

According to one embodiment, the container is kneaded by clamping the sides of the container containing the liquid contents and the absorbent body, rotating the container from side to side, or up and down in opposite directions and applying shear stress.

According to another embodiment, the container may have a thickness of 50-500 microns.

According to a further embodiment, the container material is at least one material selected from the group consisting of polyvinyl alcohol (PVA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), urethane and vinyl polymers. The group formed.

According to yet another embodiment, one absorbent body absorbs 10-50 milliliters of liquid content and 10-200 absorbent bodies are introduced into the container.

[Beneficial effect]

According to the liquid content absorption method of the present invention, when a liquid content having a relatively high viscosity is absorbed into the absorbent body, the high viscosity liquid content can be absorbed into the absorbent body having various forms. Thus, the absorbent body can be allowed to eject a sufficient amount of contained liquid contents to readily absorb even highly viscous liquid contents and to perform efficient absorption regardless of the particular type and pore size of the absorbent body material.

[Best mode]

The exemplary embodiments will be described more fully hereinafter with reference to the accompanying drawings, which illustrate exemplary embodiments. However, the invention may be embodied in many different forms and should not be construed as being limited to the exemplary embodiments described.

In one aspect, a method for absorbing liquid contents is provided, comprising adding a liquid content and an absorbent to a container and applying a shear stress at an angle of 20 to 80 to knead.

There is no particular limitation on the operation of applying shear stress, and it can be manually performed by a manual system (instrument) or an automatic system (instrument).

The pore diameter of the material or absorber (carrier) which can be used in the present invention is not particularly limited. For example, the absorbent body may be at least one material selected from the group consisting of sponges, expanded polyethylene, expanded polypropylene, expanded polyamide, expanded polyester, expanded polyether, expanded polyurethane, cotton, and Woven, acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), natural rubber (NR), polyvinyl chloride, polyethylene, ethylene-vinyl acetate copolymer (EVA), latex , silicone, coating materials, styrene-isoprene-styrene rubber (SIS), styrene-ethylene-butylene-styrene rubber (SEBS), polyvinyl alcohol (PVA), polyoxyalkylene elastomer A group consisting of nitrile rubber, butyl rubber and chloroprene rubber, dry urethane, wet urethane, or the like. In particular, the absorbent body can be made of a sponge.

In particular, it is possible to introduce 10 to 200 absorbers into the container. An absorbent body can absorb 10 to 50 ml of liquid contents. Thus, the amount of liquid content in the container can be from 100 ml to 10 liters, especially from 1 to 5 liters. When more than 10 liters of liquid content is present in the container, it is difficult to uniformly adsorb the cosmetic by applying shear stress to one's hand. Further, when the liquid content is present in an amount greater than 10 liters, it is not easy to determine the degree of uniform adsorption of the liquid contents. If the amount of the liquid content is less than 100 ml, the efficiency is low due to poor productivity, and the workability is also lowered when the amount is increased. According to an embodiment of the invention, the amount of absorbent used is 1.5 times the amount of filler typically used in the art. This is because physical friction is maximized.

The liquid contents are not particularly limited as long as they are present in a liquid state. For example, it can be formulated into a skin lotion, a skin softener, a toner, an astringent, a lotion, a lotion, a moisturizing lotion, a nourishing lotion, a massage cream, a nutrient cream, or a moisturizer. In particular, the cosmetic may be an emulsified (emulsion) formulation. More specifically, a cosmetic can be prepared as an ultraviolet (UV) protectant (sunscreen) of the above formulation type.

The liquid content may be water-dispersible, oil-dispersible water-in-oil (W / O) type or oil-in-water (O / W) type cosmetics.

In addition, the liquid content is not limited to the level of viscosity. The contents can have a very wide range of viscosities. Therefore, various liquid contents can be used. The liquid cosmetic agent may have a viscosity of 20,000 centipoise (cps) or less, especially 15,000 centipoise or less, more specifically 5,000 to 12,000 centipoise or 1 to 5,000 centipoise, especially 8,000 to 11,000 centipoise. Or 1 to 3,000 centipoise. In accordance with an embodiment of the present invention, an efficient method of impregnating liquid contents by a manual process can be provided. As a result, an absorbent body made of various materials can be used, and can have different pore size, hardness, number of pores, density, elongation, absorption rate per unit volume, absorption rate, and absorption retention. Therefore, it is possible to expand the range of applications of the absorber and the liquid contents, otherwise it is limited to the related art.

The viscosity of the liquid contents can be measured with a viscometer. Specific examples of the viscometer may include, but are not limited to, LVDV II+ PRO or RVDV III ULTRA, shaft No. 63 or No. 64, and the viscosity may be measured at a speed of 5 or 12 revolutions per minute.

The container is used to provide a specific space in which the liquid contents and the absorbent body are mixed with each other, and the material thereof includes a flexible thermoplastic resin. The container may have a thickness of 50-500 microns. If the thickness is less than 50 μm, the container may be easily broken when a strong shear force is applied. When the thickness is more than 500 μm, it is difficult to apply a sufficient shear force because of such a large thickness, and therefore, it is not easy to knead.

There is no particular limitation in the container as long as it has a thickness within the above range and allows the material contained therein to be kneaded from the outside. The container may be at least one material selected from the group consisting of polyvinyl alcohol (PVA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), urethane, and vinyl polymers. In particular, a container made of a vinyl polymer can be used.

After the introduction of the liquid contents and the absorbent body to the container, the air inside the container is removed most highly and then sealed. The liquid contents and the absorbent body in the container are then kneaded together.

To increase the absorption capacity of the absorbent body to the highest degree, physical friction must be maximized. For this, shear stress is applied, in particular at an angle of 20-80°. More particularly, the angle can be from 30 to 70 degrees, most particularly from 40 to 60 degrees. When the angle is less than 20°, the shear stress is insufficient. When the angle is greater than 80°, the operator may have difficulty working, and it is difficult for the operator to apply shear stress. In addition, such a large angle may be the application of a pressing force rather than the application of shear stress.

The kneading operation can be performed by manually applying shear stress to the liquid contents and the absorbent body in the container. In a variation, the mixing operation can be performed by applying shear stress while holding both sides of the container containing the liquid contents and the absorbent body to rotate the container from side to side or up and down. The aspect ratio of the volume of the absorbent body and the liquid contents in the container can be considered when applying the shear stress angle. For example, when the height of the volume of the absorbent body and the liquid contents in the container (vertical line) is 50 cm, the lateral direction is advanced by 50 cm to produce a shear stress of 45°.

The kneading operation can be repeated 5-15 times. By such a kneading operation, the air in the absorbent body is removed, and the absorbent body absorbs the optimum amount of liquid content. Thus, the shear mixing absorption operation allows liquid contents of any viscosity to be quickly and efficiently absorbed into any type of absorbent body.

After the kneading is completed, the extent to which the contents are absorbed by the absorber can be measured. The absorbent body having sufficient liquid content to be absorbed is then placed on a tray for transport and packaged in a container. When the absorbent body is packaged in a container, the contents can be modified by weighing the absorbent body if necessary.

The absorption of liquid contents allows for efficient absorption even in the case of highly viscous liquid contents, as compared to conventional mechanical spraying or pressing processes. Further, even in the case where the diameter of the absorber is small or the interface characteristics make it difficult to pack the contents, the absorber can be effectively absorbed.

10. . . Liquid content

20. . . Absorber

30. . . container

1 is a schematic view showing a method of absorbing a liquid content according to an embodiment, wherein (a) a kneading operation showing manual application of shear stress, and (b) a kneading operation showing application of shear stress in a rotating container.

Figure 2 is a photograph showing the absorption of liquid contents according to an embodiment.

Figure 3 is a photograph showing the test results and the impregnation degree of the method of absorbing liquid contents according to an embodiment.

The construction, effects and effects of the present invention will now be explained in more detail by way of examples, comparative examples and test examples. The following examples, comparative examples and test examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[Test Example 1] A test for comparing the absorbance of a liquid content according to the angle of shear stress provides a sponge and a liquid content, and when shear stress is applied at 0°, 10°, 20-30°, 45°, and 90°, The mutual absorption of the liquid contents by the sponge is compared with each other. As shown in Fig. 2, a shear test was conducted in which 10 g of liquid contents were discharged between two glass plates, and a sponge (absorbent body) was interposed therebetween, and the sponge was pressed with a glass plate so that the sponge was impregnated with the liquid contents. At that time, the glass plate and the lower glass plate were pushed in such a manner that the glass plates were divided. Then, the angle of the divergence is calculated as the shear angle of the shear stress. The result is shown in Fig. 2.

As can be seen in Figure 2, the sponge cannot impregnate a uniform liquid content when shear stress is applied at 0° and 10°. When a shear stress is applied at 20 to 30 or more, the sponge can impregnate a uniform liquid content. After determining the amount of liquid content incorporated into the sponge, a shear angle of 0° provides an impregnation amount as small as 4.7 grams. In contrast, if the shear stress angle is 20° to 80°, the impregnation amount is 5.1 to 6.4 g, which is significantly higher than the impregnation amount with a shear angle of 0°. In particular, when the shear stress angle is 45°, the sponge impregnates the liquid content most uniformly and provides the maximum impregnation amount of liquid content. When the angle of the shear stress is greater than 80°, the amount of impregnation is considerably reduced.

10. . . Liquid content

20. . . Absorber

30. . . container

Claims (9)

A method for absorbing liquid contents comprising introducing a liquid content and an absorbent body into a container and applying a shear stress at an angle of 20 to 80 to knead. A method of absorbing liquid contents as claimed in claim 1, wherein the container containing the liquid contents and the absorbent body is kneaded on both sides and subjected to shear stress, and the container is moved from the side to the other side or up and down Reverse rotation. The method of claim 1, wherein the liquid content is at least one selected from the group consisting of a skin lotion, a skin softener, a toner, an astringent, a lotion, an emulsion, a moisturizing lotion, a nourishing lotion, and a massage cream. a group consisting of a nutritional cream, or a moisturizing cream, a liquid preparation, and an oily preparation. A method of absorbing liquid contents as claimed in claim 1 wherein the liquid content has a viscosity of from 1 to 20,000 centipoise. A method of absorbing liquid contents as claimed in claim 1 wherein the liquid content has a viscosity of from 8,000 to 11,000 or from 1 to 3,000 centipoise. The method of claim 1, wherein the absorbent body is at least one material selected from the group consisting of sponges, expanded polyethylene, expanded polypropylene, expanded polyamide, expanded polyester, and expanded polyether. , foamed polyurethane, cotton, non-woven fabric, acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), natural rubber (NR), polyvinyl chloride, polyethylene, Ethylene-vinyl acetate copolymer (EVA), latex, silicone, film-type material, styrene-isoprene-styrene rubber (SIS), styrene-ethylene-butylene-styrene rubber (SEBS), poly A group consisting of vinyl alcohol (PVA), polyoxyalkylene elastomer, nitrile rubber, butyl rubber and chloroprene rubber, dry urethane and wet urethane. A method of absorbing liquid contents as claimed in claim 1 wherein the container has a thickness of from 50 to 500 microns. A method of absorbing liquid contents as claimed in claim 1 wherein the container is at least one material selected from the group consisting of polyvinyl alcohol (PVA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), and urethane. A group of esters and vinyl polymers. A method of absorbing a liquid content as claimed in claim 1, wherein the absorbent body absorbs the liquid content in an amount of 10 to 50 ml, and introduces 10 to 200 absorbent bodies into the container.