A liquid eyeliner

Abstract

The present invention discloses a liquid eyeliner, comprising a pen barrel and an inner liner; the pen barrel is a hollow structure with an opening at one end, and the inner liner is placed in the pen barrel; a pen head is provided at one end of the inner liner, and an inner plug is provided at the other end, the pen head extends out of the opening of the pen barrel, and a pen core is inserted into the pen head; an air return structure is provided on the inner plug, and the air return structure includes an air return membrane made of air permeable but not liquid permeable. The present invention not only solves the problem of liquid leakage from the air return hole, but also ensures the air return effect to keep the product continuously and smoothly discharging water.

Description

Technical Field

[0001] The invention relates to the technical field of makeup tools, in particular to a liquid eyeliner. Background Art

[0002] Liquid eyeliners currently on the market can be generally divided into two categories: ball-shaped type and sponge core storage type.

[0003] The discharging principle of the shaking ball type liquid eyeliner pen is that the material can continuously flow out of the pen core through the weight of the material body, the suction force of the pen core and the water-drawing core on the material body, and the viscosity of the material body itself.

[0004] The ball-shaped liquid eyeliner has the following disadvantages:

[0005] The inner liner is closed and the internal air pressure cannot be adjusted. When the material in the liner is reduced to a certain extent and the inner liner reaches a certain vacuum degree, the external high air pressure will affect the outflow of the material. In addition, when the goods are transported from the plain area to the plateau area, the air pressure in the liner is greater than that outside. When consumers open the cap to use the pen, they often find that the material leaks from the pen tip, which can easily cause dirt and make consumers mistakenly believe that the product quality is abnormal, affecting the user experience and brand image.

[0006] In order to ensure that the product can always discharge liquid smoothly and keep the air pressure inside and outside the packaging material balanced, an air return hole is provided at the pen tip. In order to reduce the risk of liquid leakage from the air return hole, a grid and a water guide core are required, which increases the complexity and cost of assembly. However, this structure still cannot avoid the problem of leakage from the air return hole.

[0007] The size of the air return channel (the air return hole, the grid and the gap between it and the inner tank wall) must be well controlled to ensure the function is realized. If the gap is too large, the liquid is easy to leak. If the gap is too small, the material is easy to dry in the gap, blocking the channel and causing insufficient air return, affecting the use. The dimensional accuracy and stability must be high, and the requirements for molds, equipment and process technology are quite high. Only a few manufacturers can meet the requirements and it is difficult to ensure that all products are qualified. In addition, the effect is greatly affected by the viscosity of the material, the filling volume, etc., so the requirements for the entire production process are very high, which greatly restricts product development.

[0008] The sponge core storage liquid eyeliner pen uses a sponge core to store liquid to avoid liquid leakage, but the sponge core has a certain adsorption effect on the material, making it difficult to draw out the tail material for use, and the product surplus rate is high, resulting in waste. In addition, the sponge core is relatively long and large, and the material is poured from the tail to the pen head for discharge. The sponge core increases the specific surface area of ​​the material, making the material easier to evaporate and dry. As the product is used for a longer time, the volatile substances in the material slowly evaporate, and the material becomes viscous. When passing through the gaps in the cotton core, part of the material will be blocked in the gaps, and slowly accumulate more and more to form a blockage, affecting the product's water output effect and material properties, and affecting the makeup effect. Summary of the invention

[0009] The purpose of the present invention is to provide a liquid eyeliner pen to solve the problems in the prior art that the manufacturing process of the ball-type liquid eyeliner pen is complicated, it is difficult to prevent the liquid from leaking from the air return hole of the pen head, and the sponge core storage liquid eyeliner pen has a high residual rate and unsmooth water discharge.

[0010] In view of this, the present invention provides a liquid eyeliner, comprising a pen holder and an inner liner;

[0011] The pen holder is a hollow structure with one end open, and the inner liner is placed in the pen holder;

[0012] A pen tip is provided at one end of the inner shell, and an inner plug is provided at the other end, the pen tip extends out of the opening of the pen barrel, and a pen core is inserted into the pen tip;

[0013] The inner plug is provided with an air return structure, which includes an air return membrane made of air permeable and liquid impermeable.

[0014] Preferably, the inner plug is embedded with an air return membrane.

[0015] Preferably, the bottom of the inner plug is open, and the air return membrane covers the opening of the inner plug.

[0016] Preferably, the air return structure comprises at least one air return hole penetrating the inner plug, and the air return hole is filled with an air return membrane.

[0017] Preferably, the air return hole is arranged at the bottom of the inner plug, the air return hole is stepped, the small hole of the air return hole faces inward and the large hole faces outward, an air return hole cover is arranged in the large hole of the air return hole, and the air return membrane is arranged in the small hole of the air return hole.

[0018] Preferably, the air-permeable and liquid-impermeable material is provided with a plurality of pores with diameters ranging from 0.05 μm to 0.45 μm.

[0019] Preferably, the gas-permeable and liquid-impermeable material has a thickness between 75 μm and 250 μm.

[0020] Preferably, the air-permeable and liquid-impermeable material is high-density polyethylene synthetic paper or LLDPE composite film.

[0021] Preferably, a rocking ball is provided in the inner container.

[0022] Preferably, the eyeliner further comprises a pen cap capable of covering the pen tip, and the pen cap is engaged with the pen tip.

[0023] Compared with the prior art, the advantages of the embodiments of the present invention are:

[0024] The present invention utilizes air-permeable and liquid-impermeable materials to achieve air pressure balance inside and outside the inner liner, eliminates the water-blocking air return structure formed by the grid, greatly simplifies the structure and assembly complexity of the eyeliner, reduces the technical difficulty, and thus reduces the cost; thoroughly solves the problem of liquid leakage from the air return hole of the pen tip, and the phenomenon of liquid oozing out of the pen tip when the cover is opened after the product is transported from a plain area to a plateau area does not occur, making the product applicable to a wider area, which is conducive to market development and sales; avoids the problem of blockage of the air return channel affecting the air return effect and thus causing poor water discharge; avoids the problem of a large amount of material being adsorbed on the cotton core and being unable to be used, causing waste; avoids the problem of material separation, unstable makeup effect, unstable water discharge, etc. due to the blockage and filtering effect of the sponge core. In short, the present invention not only solves the problem of liquid leakage from the air return hole, but also ensures the air return effect to keep the product continuously and smoothly discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the inner plug according to Example 1 of the present invention;

[0028] Figure 3 It is a top view of the inner plug of Example 1 of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the inner plug according to Example 2 of the present invention;

[0030] In the figure: 1-pen holder; 2-inner liner; 3-pen tip; 4-inner plug; 41-air return hole; 42-air return membrane; 5-pen core; 6-pen cap; 7-shaking ball. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example 1

[0035] See also Figure 1-Figure 3 The present embodiment provides a liquid eyeliner, comprising a pen barrel 1 and an inner liner 2; the pen barrel 1 is a hollow structure with one end open, the inner liner 2 is placed in the pen barrel 1, the diameter of the inner liner 2 is slightly smaller than the inner diameter of the pen barrel 1, and the inner liner 2 has relevant assembly buckle lines, so that the inner liner 2 can be sleeved in the pen barrel 1 and tightly connected thereto.

[0036] The inner liner 2 is also a hollow structure, and is filled with liquid material for applying eyeliner. A shaking ball 7 is also arranged in the inner liner 2. A pen tip 3 is arranged at one end of the inner liner 2, and an inner plug 4 is arranged at the other end. The pen tip 3 extends out of the opening of the pen barrel 1. The pen tip 3 is a conical structure that conforms to the human body's pen-holding habits. A pen core 5 is inserted into the pen tip 3. One end of the pen core 5 passes through the pen tip 3, and the other end extends into the liquid in the inner liner 2. The eyeliner pen also includes a pen cap 6 that can cover the pen tip 3, and the pen cap 6 is engaged with the pen tip 3.

[0037] An air return structure is provided on the inner plug 4, and the air return structure includes an air return hole 41 and an air return membrane 42. The air return hole 41 is arranged through the bottom of the inner plug 4, and the bottom of the inner plug 4 is the end of the inner plug 4 away from the inner liner 2. The air return hole 41 is a step hole, which is T-shaped in cross section. The small hole of the air return hole 41 faces inward and the large hole faces outward, that is, the small hole of the air return hole 41 is connected with the inside of the inner liner 2, and the large hole is connected with the outside of the inner liner 2. The air return membrane 42 is filled in the small hole of the air return hole 41. Through such a design, the air return membrane 42 is placed in the small hole of the air return hole, which can play a certain protective role on the air return membrane.

[0038] The air return membrane 42 is made of an air-permeable but liquid-impermeable material, which is a high-density polyethylene synthetic paper, also called a high-density polyethylene fiber non-woven fabric, on which a number of pores with diameters between 0.05 μm and 0.45 μm are evenly arranged, a thickness between 75 μm and 250 μm, an air permeability between 30s and 157s, and a water inlet pressure between 186 kPa and 414 kPa. According to actual production conditions, other materials can be used for the air-permeable but liquid-impermeable material as long as they meet the above-mentioned design values, such as LLDPE composite film.

[0039] In this embodiment, an air-permeable but liquid-impermeable material is used to form an air return membrane 42. The pores on the air return membrane 42 are larger than gas molecules, but smaller than liquid molecules, and there is a certain intermolecular force between liquid molecules, so that the air return membrane 42 can achieve the effect of being air-permeable and liquid-impermeable. When consumers use this embodiment, the amount of liquid used each time is very small. There is enough air in the pen barrel 1 to enter the inner liner 2 through the air return membrane 42 to replenish the pressure inside the inner liner 2 to make it consistent with the external atmospheric pressure. This not only solves the problem of liquid leakage from the air return hole, but also ensures the air return effect to keep the product continuously and smoothly discharging water.

[0040] This embodiment eliminates the water-blocking air return structure formed by the grid parts, greatly simplifies the structure and assembly complexity of the eyeliner, reduces the technical difficulty, and thus reduces the cost; completely solves the problem of liquid leakage from the air return hole of the pen tip, and does not cause liquid to leak from the pen tip when the lid is opened after the product is transported from the plain area to the plateau area, making the product applicable to a wider area and facilitating market development and sales; avoids the problem of blockage of the air return channel affecting the air return effect and resulting in poor water output; avoids the problem of a large amount of material being adsorbed on the cotton core and unable to be used, causing waste; avoids the problem of material separation, unstable makeup effect, unstable water output, etc. due to the blockage and filtering effect of the sponge core.

[0041] Example 2

[0042] See also Figure 1 and Figure 4 The present embodiment provides a liquid eyeliner, comprising a pen barrel 1 and an inner liner 2; the pen barrel 1 is a hollow structure with one end open, the inner liner 2 is placed in the pen barrel 1, and the diameter of the inner liner 2 is slightly smaller than the inner diameter of the pen barrel 1, so that the inner liner 2 can be tightly attached to the inner wall of the pen barrel 1.

[0043] The inner liner 2 is also a hollow structure, and is filled with liquid material for applying eyeliner. A shaking ball 7 is also arranged in the inner liner 2. A pen tip 3 is arranged at one end of the inner liner 2, and an inner plug 4 is arranged at the other end. The pen tip 3 extends out of the opening of the pen barrel 1. The pen tip 3 is a conical structure that conforms to the human body's pen-holding habits. A pen core 5 is inserted into the pen tip 3. One end of the pen core 5 passes through the pen tip 3, and the other end extends into the liquid in the inner liner 2. The eyeliner pen also includes a pen cap 6 that can cover the pen tip 3, and the pen cap 6 is engaged with the pen tip 3.

[0044] The inner plug 4 is provided with an air return structure, which includes an air return membrane 42. An opening is provided on the bottom of the inner plug 4 to connect the interior of the inner liner 2 with the internal space of the pen holder 1. The air return membrane 42 covers the opening at the bottom of the inner plug 4.

[0045] The air return membrane 42 is made of an air-permeable but liquid-impermeable material, which is a high-density polyethylene synthetic paper, also called a high-density polyethylene fiber non-woven fabric, on which a number of pores with diameters between 0.05 μm and 0.45 μm are evenly arranged, a thickness between 75 μm and 250 μm, an air permeability between 30s and 157s, and a water inlet pressure between 186 kPa and 414 kPa. According to actual production conditions, other materials can be used for the air-permeable but liquid-impermeable material as long as they meet the above-mentioned design values, such as LLDPE composite film.

[0046] In this embodiment, an air-permeable but liquid-impermeable material is used to form an air return membrane 42. The pores on the air return membrane 42 are larger than gas molecules, but smaller than liquid molecules, and there is a certain intermolecular force between liquid molecules, so that the air return membrane 42 can achieve the effect of being air-permeable and liquid-impermeable. When consumers use this embodiment, the amount of liquid used each time is very small. There is enough air in the pen barrel 1 to enter the inner liner 2 through the air return membrane 42 to replenish the pressure inside the inner liner 2 to make it consistent with the external atmospheric pressure. This not only solves the problem of liquid leakage from the air return hole, but also ensures the air return effect to keep the product continuously and smoothly discharging water.

[0047] This embodiment eliminates the water-blocking air return structure formed by the grid parts, greatly simplifies the structure and assembly complexity of the eyeliner, reduces the technical difficulty, and thus reduces the cost; completely solves the problem of liquid leakage from the air return hole of the pen tip, and does not cause the phenomenon of liquid oozing out of the pen tip when the cover is opened after the product is transported from the plain area to the plateau area, making the product applicable to a wider area and facilitating market development and sales; avoids the problem of blockage of the air return channel affecting the air return effect and thus causing poor water output; avoids the problem of a large amount of material being adsorbed on the cotton core and unable to be used, causing waste; avoids the problem of material separation, unstable makeup effect, unstable water output, etc. due to the blockage and filtering effect of the sponge core.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid eyeliner, characterized in that: Including pen holder and liner; The pen holder is a hollow structure with one end open, and the inner liner is placed in the pen holder; A pen tip is provided at one end of the inner shell, and an inner plug is provided at the other end, the pen tip extends out of the opening of the pen barrel, and a pen core is inserted into the pen tip; The inner plug is provided with an air return structure, and the air return structure comprises an air return membrane made of an air-permeable and liquid-impermeable material; The air return structure comprises at least one air return hole penetrating the inner plug, and the air return hole is filled with an air return membrane; The inner container is provided with a shaking ball; The air return hole is arranged at the bottom of the inner plug, the air return hole is in a step shape, the small hole of the air return hole faces inward and the large hole faces outward, and the air return membrane is arranged in the small hole of the air return hole.

2. The liquid eyeliner according to claim 1, characterized in that The inner plug is embedded with an air return membrane.

3. The liquid eyeliner according to claim 1, characterized in that The bottom of the inner plug is open, and the air return membrane covers the opening of the inner plug.

4. The liquid eyeliner according to any one of claims 1 to 3, characterized in that: The air-permeable and liquid-impermeable material is provided with a plurality of pores with diameters between 0.05 μm and 0.45 μm.

5. The liquid eyeliner according to claim 4, characterized in that The thickness of the air-permeable and liquid-impermeable material is between 75 μm and 250 μm.

6. The liquid eyeliner according to claim 5, characterized in that The air-permeable and liquid-impermeable material is high-density polyethylene synthetic paper or LLDPE composite film.

7. The liquid eyeliner according to claim 1, characterized in that The eyeliner also includes a pen cap capable of covering the pen tip, and the pen cap is engaged with the pen tip.

Images