Multi-color matching eyebrow pencil core and processing forming method and application thereof

Abstract

The invention discloses a processing and forming method of a multicolor matching eyebrow pencil core, which comprises the following steps: firstly preparing refill preforms by adopting an extruder, and then carrying out various splicing combinations on the refill preforms, the combination modes of the preforms are various, and the splicing combination mainly realizes that a multicolor effect is presented in the circumferential direction, so that the multicolor matching eyebrow pencil core is formed. According to the multi-color color matching pen refill, the color matching effect can be achieved in the axial direction, the color crossing phenomenon cannot occur between the color areas, the boundary between the color areas is clearer and more obvious, the cross sectional area of the pen refill is of a conventional size, and the multi-color color matching pen refill prepared through the technology can show multiple different colors at the same use moment at the same time; mechanical switching is not needed, random or regular color change of the display of various colors can be achieved along with the using process, and rich dynamic and three-dimensional display is brought. In addition, the prepared multi-color matching eyebrow pencil core is assembled on eyebrow pencils, lip line pencils, color pencils and other pencil tools needing solid-state pencil cores for application.

Description

Technical Field

[0001] The invention relates to the technical field of cosmetics processing, and in particular to a multi-color matching eyebrow pencil core and a processing and molding method and application thereof. Background Art

[0002] Eyebrow pencil is a beauty makeup product for drawing eyebrows. It is convenient and quick to use. Eyebrow pencil consists of a rod-shaped pen holder and an internal eyebrow pencil core. There are many types of eyebrow pencils on the market. According to the color of the internal eyebrow pencil core, they can be divided into single-color eyebrow pencils and multi-color eyebrow pencils. The design of multi-color eyebrow pencils is to achieve the best makeup effect, making eyebrows have a layered and three-dimensional sense.

[0003] In the prior art, there are different ways to achieve multi-color eyebrow pencils, mainly including the following two-color eyebrow pencils:

[0004] 1. A double-headed multi-color eyebrow pencil with an eyebrow pencil core disposed at each end of the eyebrow pencil holder, such as the double-color eyebrow pencil disclosed in patent CN204427050U;

[0005] 2. A clustered multi-color eyebrow pencil that uses a clustered refill to select and push out a mechanical device, such as a six-color push-type eyebrow pencil disclosed in patent CN107006997A;

[0006] 3. Connect multiple color refills into one by means of a spiral interface provided at the end, so as to form a multi-color pen connected in series, such as a combined multi-color pen disclosed in patent CN105291644A;

[0007] 4. A multi-color eyebrow pencil in which the refills of different colors are manually cut longitudinally and multiple refills of different colors are closely attached together, such as a multi-color eyebrow and lip pencil disclosed in patent CN212912143U.

[0008] However, the designs of the above-mentioned multi-color eyebrow pencils all have certain limitations: a double-headed multi-color eyebrow pencil cannot be compatible with more colors at the same time, a clustered multi-color eyebrow pencil will become more complex in structure as the color number increases, and a series-connected multi-color pencil cannot display multiple colors on the surface of use at the same time.

[0009] The multi-color eyebrow and lip pencil formed by artificial color matching can simplify the complex and show rich colors on the same pen core at the same time. However, the processing method of the artificial color matching eyebrow and lip pencil disclosed in patent CN212912143U is relatively complicated, and the processing and production efficiency is low, which cannot meet the requirements of production capacity, automation and quality of industrial production. Moreover, the artificial color matching eyebrow and lip pencil produced by this processing method can only show limited colors when used, and can only show fixed color distribution effects at different use angles. Summary of the invention

[0010] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides a processing and molding method of a multi-color mosaic eyebrow pencil core, which adopts an extruder, and is manufactured by extrusion molding to simultaneously present multiple mosaic colors on a single pen core, and there will be no color bleeding between color areas, and the boundaries between color areas are clearer and more obvious, and the cross-sectional area of ​​the pen core is of a conventional size. The multi-color mosaic pen core prepared by this process can simultaneously display multiple different colors at the same moment of use without mechanical switching, and this display of multiple colors will achieve random or regular color changes during the use process, bringing rich dynamic and three-dimensional display. In addition, the present invention also provides a method of assembling the prepared multi-color mosaic eyebrow pencil core on pen tools such as eyebrow pencils, lip liners, and colored pencils that require solid pen cores for application.

[0011] In order to achieve the above object, the present invention adopts the following technical solutions:

[0012] The first aspect of the present invention provides a method for processing and molding a multi-color eyebrow pencil core, wherein the core material is extruded into a preformed rod, and then a plurality of preformed rods are gathered into a bundle according to a color combination design, and the bundled preformed rods are extruded to obtain a multi-color eyebrow pencil core;

[0013] The multi-color eyebrow pencil core presents at least two different and changing colors in the circumferential direction and / or the length direction.

[0014] Using the above technical solution:

[0015] The multi-color mosaic eyebrow pencil core of the present invention is prepared by first preparing a core preform rod, and then performing a variety of splicing combinations between the core preform rods. The combination of the preform rods is various, and the splicing combination mainly realizes a multi-color effect in the circumferential direction, and can also present a multi-color effect in the axial direction. There will be no color bleeding between color areas, and the boundaries between color areas are clearer and more obvious.

[0016] Compared with mixed-color eyebrow pencil refills, it uses refill materials to make refill masterbatches of different colors, and then mixes and extrudes the refill masterbatches of different colors to make multi-color eyebrow pencil refills. This method is suitable for presenting a multi-color effect in the axial direction of the refill. When it is used to present a multi-color effect in the circumferential direction of the refill, it is easy for the color boundary area to be wide, and color bleeding is easy to occur between the color areas.

[0017] The present invention adopts an industrialized production method to realize the display of multiple color matching colors on a single pen core. Specifically, an extruder is used to extrude pen core preform rods, and then the pen core preform rods are spliced ​​and combined in multiple ways to produce a single pen core with multiple color matching colors. There will be no color mixing between color areas, and the boundaries between color areas are clearer and more obvious. In addition, the cross-sectional area of ​​the pen core is of a conventional size. The multi-color color matching pen core prepared by this process can display different colors at the same time at the same moment of use without mechanical switching. Moreover, the display of multiple colors can realize random or regular color changes during the use process, bringing rich dynamic and three-dimensional display. For example, multiple colors are distributed on the same circumference, and the jumping and rhythmic feeling can be expressed through colors during use.

[0018] The present invention uses an extruder as the core equipment for industrially manufacturing multi-color eyebrow pencil cores. The eyebrow pencil core material itself is made of a mixture of oil wax material and pigment, and a small amount of various additives are added to the formula. Based on the polymer characteristics of the oil wax material in the eyebrow pencil core material, the eyebrow pencil core material is suitable for extruder processing. Eyebrow pencil core material formulas with a solid content of 40% to 95% can be applied to the processing and molding method of the present invention. The eyebrow pencil core material formula as described above should contain at least one and more dispersed phases, and this dispersed phase contains a powder phase, which can be a color powder or a powder that plays a filling role, and its content is between 40% and 95%. The dispersed phase is dispersed in at least one and more base phases, and the base phase can be a wax-based or resin-based material. When it is above its melting point, it can be mixed evenly with the dispersed phase to meet the process of extrusion granulation. It should be pointed out that the eyebrow pencil core material formula with a solid content of less than 40% can also be applied to the processing and molding method of the present invention, but the processing and molding method of the present invention cannot be applied alone. The eyebrow pencil core material formula with a solid content lower than 40% can be used in combination with the eyebrow pencil core material formula with a solid content between 40% and 95% as a processability regulator in the processing and molding method of the present invention.

[0019] In the present invention, the role of the extruder runs through two main steps, the extrusion into rods process and the extrusion into bundles process. The extrusion into rods process is specifically: the refill materials are mixed and processed and then extruded into preformed rods. The extrusion into bundles process is specifically: the preformed rods are assembled into bundles according to different color combination designs, and the bundled preformed rod assembly is pressurized, heated, or pressurized and heated at the same time in the extruder, so that the preformed rods flow toward the other end in the extruder to form, and the extruder discharge end is equipped with a forming die head to obtain a multi-color eyebrow pencil refill with a specified cross-sectional shape and size.

[0020] The extruder used in the present invention has multiple options, including but not limited to: single-screw extruder, twin-screw extruder, three-screw extruder, reciprocating single-screw extruder, and plunger extruder.

[0021] Furthermore, the molding die head has a die opening design with different cross-sectional shapes. By designing the die opening of the molding die head, the extruded multi-color eyebrow pencil can be molded into a required cross-sectional shape.

[0022] Preferably, in the process of extruding the bundled preformed rods to obtain a multi-color eyebrow pencil core, a molding die is installed at the discharge end of the extruder, and the molding die can rotate at a certain speed along the axial direction of the multi-color eyebrow pencil core to obtain a multi-color eyebrow pencil core with a circumferential spiral change effect.

[0023] Furthermore, the preform is a single-color preform made by extruding a core material of one color.

[0024] For example: select refill materials A, B, and C, where refill material A is red, refill material B is blue, and refill material C is yellow, and extrude refill preform rods A, B, and C from each of them through an extrusion molding process, and then gather refill preform rods A, B, and C in a specific quantity ratio, such as 1:1:1, in a specific combination method (such as regularly staggered distribution or fan-shaped partition distribution) into a bundle, and then extrude the bundled preform rods to obtain a multi-color patchwork eyebrow pencil refill, and the obtained multi-color patchwork eyebrow pencil refill has three colors of red, blue, and yellow distributed in the circumferential direction.

[0025] Furthermore, the preform is a multi-color preform made by extruding at least two colors of core materials and presenting random or regular color changes in the length direction.

[0026] Since the color change of the multi-color eyebrow pencil core in the circumferential direction in the present invention is mainly achieved by combining the bundled preform rods, it is easier to control the color presentation in the circumferential direction. Therefore, under normal circumstances, the preform rods will not be designed with multiple colors in the circumferential direction, but the mixed feeding method of multiple core materials is adjusted to achieve the multi-color design of the preform rods in the axial direction. In specific applications, the preform rods can also be designed with multiple colors in the circumferential direction.

[0027] Specifically, a plurality of different colored refill materials are added to the extruder in a certain proportion or unevenly to achieve a multi-color mixed preform effect. The refill materials can be added randomly or periodically, unevenly in space or unevenly in time, so that the color change of the extruded preform can be random or regular. The color change of the corresponding extruded multi-color preform can be along the length direction of the refill, along the circumference direction of the refill, or both changes can exist simultaneously.

[0028] For example, by alternately adding red and blue refill materials into the extruder every second, the extruded multi-color preform will become a color-changing refill with red and blue alternating in the length direction.

[0029] For example, three feeding ports are set at 120° intervals along the circumference of the extruder barrel, and the refill materials can be added synchronously. Then, three colors of refill materials are added to the extruder every second in an alternating manner. Red, yellow and blue refill materials are added in the previous second, and cyan, green and purple refill materials are added in the next second. The extruded multi-color preform will become a color-changing refill with a fan-shaped three-color pattern that is nearly evenly divided on the circumference, and alternating red, yellow and blue fan-shaped three-color pattern and cyan, green and purple fan-shaped three-color pattern in the length direction.

[0030] Specifically, the uneven feeding method of the multiple different colors of the refill materials is a random feeding method or a periodic feeding method. The color change of the corresponding extruded multi-color preform can be random or regular.

[0031] If a continuous extruder is used to perform the extrusion and bundling operation of the lead preform rods, then the extruder can be equipped with two or more feeding devices in the same feeding section. For example, a feeding device for red and blue lead preform rods and a feeding device for yellow lead preform rods, and then the two feeding devices feed materials at the same time during the continuous extrusion process, then the lead material in the extruder barrel will be in a state where the red and blue preform rods and the yellow preform rods are bundled together, and this bundling state will also be presented when the lead material is extruded from the extrusion port.

[0032] Furthermore, the color changes of the multi-color eyebrow pencil core in the circumferential direction and the length direction are random or regular.

[0033] Furthermore, in the process of extruding the bundled preformed rods to obtain the multi-color eyebrow pencil core, the boundary clarity between different colors of the multi-color eyebrow pencil core in the circumferential direction and the length direction is regulated by controlling the temperature of the extrusion molding process.

[0034] Since the refill material has a certain fluidity during the extrusion process, a certain proportion of the refill preforms in the interconnected parts will be mixed with the refill preforms of adjacent colors. This mixed part becomes the transition stage for the refill to change different colors. The processing temperature of the extruder is adjustable during the extrusion bundling process. When the processing temperature of the extruder is high, the refill preforms will blend more deeply during the extrusion process, and the boundaries between the different colors of the multi-color refill preforms will not be obvious. When the processing temperature of the extruder is low, the refill preforms will blend less deeply during the extrusion process, and the boundaries between the different colors of the multi-color refills will be clearer.

[0035] Specifically, when the temperature of the extrusion molding process is higher than the upper limit temperature of the wax-based melting process in the pen core material, the pen core preforms are deeply fused with each other during the extrusion process, the boundaries between the different colors of the multi-color pen core preforms are not obvious, and the color change transition is soft;

[0036] When the temperature of the extrusion molding process is lower than the lower limit temperature of the wax base melting process in the pen core material, the mutual fusion of the pen core preform in the extrusion process is shallow, the boundaries between the different colors of the multi-color pen core preform are clear and obvious, and the color change transition is sharp;

[0037] When the temperature of the extrusion molding process is lower than the upper and lower limit temperatures of the wax-based melting process in the pen core material, the boundary effect between the different colors of the multi-color pen core preform is between the above two.

[0038] The performance of this effect is also related to the composition and proportion of the refill material other than the wax-based material. For example, if the solid content in the formula is higher than 85%, the transition of color change will be sharper.

[0039] The second aspect of the present invention provides a multi-color eyebrow pencil core produced by the above-mentioned processing and molding method, wherein the multi-color eyebrow pencil core presents at least two different and changing colors in the circumferential direction and / or the longitudinal direction.

[0040] Furthermore, the color changes of the multi-color eyebrow pencil core in the circumferential direction and the length direction are random or regular.

[0041] Furthermore, the multi-color eyebrow pencil core has a circumferential spiral change effect.

[0042] Furthermore, the boundaries between different colors in the circumferential direction of the multi-color eyebrow pencil core are not obvious, the color change transition is soft, and the color gradient is presented; or the boundaries between different colors in the circumferential direction of the multi-color eyebrow pencil core are obvious, and the color change transition is sharp; or the boundary effect between different colors in the circumferential direction of the multi-color eyebrow pencil core is between the above two.

[0043] According to a third aspect of the present invention, there is provided an application of the above-mentioned multi-color eyebrow pencil core, wherein the multi-color eyebrow pencil core is assembled into an eyebrow pencil, a lip liner, a colored pencil or other pen-like tool that requires a solid pen core. The eyebrow pencil or pen-like tool having the multi-color eyebrow pencil core can synchronously display multiple colors at the same moment of use without mechanical switching, and the display of multiple colors can achieve random or regular color changes during the use process, bringing rich dynamic and three-dimensional display.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] (1) The present invention adopts an industrialized production method to achieve multiple colors on a single pen core, and no longer relies on manual operation;

[0046] (2) First, a preform rod of a pen core is prepared, and then the preform rods of the pen core are spliced ​​and combined in various ways. The combination of the preform rods is various, and the splicing combination mainly realizes a multi-color effect in the circumferential direction, and can also present a multi-color effect in the axial direction. There will be no color bleeding between the color areas, and the boundaries between the color areas are clearer and more obvious. In addition, a circumferential spiral color splicing effect can be achieved during extrusion. The cross-sectional area of ​​the prepared multi-color pen core is of a conventional size, and the multi-color effect can be presented without occupying more than one pen tip;

[0047] (3) The multi-color eyebrow pencil core prepared by the present invention can simultaneously display different colors at the same moment of use without mechanical switching;

[0048] (4) The multi-color eyebrow pencil core prepared by the present invention can be more accurately designed to present different colors of color eyebrow pencil cores by adjusting the color of the core preform rods and adjusting the splicing combination mode between the core preform rods, and the display of multiple colors can achieve random, regular, and gradual color changes during use, bringing rich dynamic and three-dimensional display;

[0049] (5) The multi-color eyebrow pencil core prepared by the present invention has a wide range of applications and can be assembled on eyebrow pencils, lip liners, colored pencils and other pen tools that require solid pencil cores for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] Figure 1 The figure is a process flow chart of the multi-color eyebrow pencil core in Example 1;

[0052] Figure 2 This is a diagram showing the processing and forming of the multi-color eyebrow pencil core in Example 1;

[0053] Figure 3 The figure is a process flow chart of the multi-color eyebrow pencil core in Example 2;

[0054] Figure 4 This is a diagram showing the processing and forming of the preform A in Example 4;

[0055] Figure 5 The structure diagram of the color matching eyebrow pencil core prepared in Example 5 is shown. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0057] Example 1

[0058] like Figure 1 As shown in the process, two kinds of refill materials are selected in this embodiment, namely, refill material A and refill material B. The colors of refill material A and refill material B are different. Refill material A is red and refill material B is blue. The two are extruded into refill preform rods A and refill preform rods B respectively through an extrusion molding process. The extruder used in this embodiment is an experimental twin-screw extruder. After extrusion, rod-shaped refill preform rods A and refill preform rods B are obtained.

[0059] Then, the refill preform A and the refill preform B are combined into uniformly alternating bundle preforms in a quantity ratio of 1:1, and the bundle preform assembly is added to the extruder and pressurized and heated to make the temperature in the feeding chamber lower than the lower limit temperature of the melting process of each wax base, so that the preforms are combined with each other and the gas in the gap is discharged. The preform assembly has a certain fluidity, and pressure is applied to the tightly combined bundle preform assembly at the feeding end of the extruder to make the bundle preform flow toward the other end in the extruder to form, and finally flow through the extrusion die head with a circular cross-sectional area to extrude a cylindrical color-matching eyebrow pencil refill with red / blue colors alternating in the circumferential direction, such as Figure 2 shown.

[0060] Example 2

[0061] like Figure 3 As shown in the process, three types of refill materials are selected in this embodiment, namely, refill material A, refill material B and refill material C. The colors of refill material A, refill material B and refill material C are different. Refill material A is red, refill material B is blue, and refill material C is yellow. The three are respectively extruded into refill preform rods A, refill preform rods B and refill preform rods C through an extrusion molding process. The extruder used in this embodiment is an experimental twin-screw extruder. After extrusion, rod-shaped refill preform rods A, refill preform rods B and refill preform rods C are obtained.

[0062] Then, the refill preform rods A, B and C are combined into bundle preform rods of three fan-shaped color areas in a quantity ratio of 1:1:1, and the bundle preform rod assembly is added into the extruder and pressurized and heated to make the temperature in the feeding chamber between the upper and lower limit temperatures of each wax base melting range, so that the preform rods are combined with each other and the gas in the gap is excluded, and the preform rod assembly has a certain fluidity. Pressure is applied to the tightly combined bundle preform rod assembly at the feeding end of the extruder to make the bundle preform rod flow toward the other end in the extruder to form, and finally flow through an extrusion die head with a circular cross-sectional area to extrude a cylindrical color-matching eyebrow pencil refill with red, blue and yellow colors evenly distributed along the circumferential direction.

[0063] Example 3

[0064] In this embodiment, three types of refill materials are selected, namely, refill material A, refill material B and refill material C. The colors of refill material A, refill material B and refill material C are different. Refill material A is red, refill material B is blue, and refill material C is yellow. The three are respectively extruded into refill preform rods A, refill preform rods B and refill preform rods C through an extrusion molding process. The extruder used in this embodiment is an experimental twin-screw extruder. After extrusion, rod-shaped refill preform rods A, refill preform rods B and refill preform rods C are obtained.

[0065] Then, the refill preform A, the refill preform B and the refill preform C are combined in a quantity ratio of 4:2:1 into three bundle preforms with fan-shaped color areas of different proportions, and the bundle preform assembly is added to the extruder and pressurized and heated to make the temperature in the feeding chamber between the upper and lower limit temperatures of each wax base melting range, so that the preforms are combined with each other and the gas in the gap is excluded, and the preform assembly has a certain fluidity, and pressure is applied to the tightly combined bundle preform assembly at the feeding end of the extruder to make the bundle preform flow to the other end in the extruder to form, and finally flow through an extrusion die head with a circular cross-sectional area to extrude a cylindrical color-matching eyebrow pencil refill with red, blue and yellow colors distributed along the circumferential direction, and the volume ratio of the three fan-shaped areas is 4:2:1.

[0066] In the same way, you only need to adjust the ratio of the number of these types of refill preforms to obtain eyebrow pencil refills with different color matching ratios, achieving a colorful color matching effect.

[0067] Example 4

[0068] In this embodiment, three kinds of refill materials are selected, namely, refill material A, refill material B and refill material C. The colors of refill material A, refill material B and refill material C are different. Refill material A is a bulk material of red and green eyebrow pencils, refill material B is blue, and refill material C is yellow. The three are extruded into refill preform rods A, refill preform rods B and refill preform rods C respectively through an extrusion molding process. The refill preform rods A are added to the extruder in an alternating manner from the bulk material of red and green eyebrow pencils, such as Figure 4 As shown, the preform A obtained in this way will present a lead preform with red and green segments alternating in the axial direction.

[0069] Later, the rod-shaped pen core preform rods A, pen core preform rods B and pen core preform rods C obtained after extrusion are randomly mixed in a ratio of 1:1:1 to form a pen core bundle, and the bundled preform rod assembly is added to the extruder and pressurized and heated to make the temperature in the feeding chamber lower than the lower limit temperature of the melting process of each wax base, so that the preform rods are combined with each other and the gas in the gap is excluded, and the preform rod assembly has a certain fluidity, and pressure is applied to the tightly combined bundled preform rod assembly at the feeding end of the extruder to make the bundled preform rod flow to the other end in the extruder to form, and finally flow through an extrusion die head with a circular cross-sectional area to be extruded into a cylindrical color-matching eyebrow pencil core, and the color-matching eyebrow pencil core has red (or green), blue and yellow three colors of pen core distributed in the axial direction of the cylinder, and the ratio of these three colors is 1:1:1. The difference from the second embodiment is that the part of the color-matching eyebrow pencil core composed of the preformed rod A is red and green alternately in the axial direction, so it can present the beauty of jumping and rhythmic color changes in the axial direction.

[0070] Similarly, when setting the preform rods for the refills, different methods of mixing the preform rods can be set. By changing the color of the eyebrow pencil bulk material corresponding to the preform rods and the way of adding, different preform rods can be mixed. The adding method can be uniform or uneven; it can be added simultaneously or alternately; if it is added simultaneously, a mixed color preform rod will be obtained; if it is added alternately, a preform rod with alternating colors in the axial direction can be obtained.

[0071] Example 5

[0072] In this embodiment, three types of refill materials are selected, namely, refill material A, refill material B and refill material C. The colors of refill material A, refill material B and refill material C are different. Refill material A is red, refill material B is blue, and refill material C is yellow. The three are respectively extruded into refill preform rods A, refill preform rods B and refill preform rods C through an extrusion molding process. The extruder used in this embodiment is an experimental twin-screw extruder. After extrusion, rod-shaped refill preform rods A, refill preform rods B and refill preform rods C are obtained.

[0073] Then, the refill preform A, the refill preform B and the refill preform C are randomly mixed in a quantity ratio of 1:1:1 to form a bundle of preforms, and the bundle of preforms is added to the extruder and pressurized and heated to make the temperature in the feeding chamber lower than the lower limit temperature of the melting process of each wax base, the preforms are combined with each other and the gas in the gap is eliminated, and the preform assembly has a certain fluidity, and pressure is applied to the tightly combined bundle of preforms at the feeding end of the extruder to make the bundle of preforms flow toward the other end in the extruder to form, and the extrusion die is set to rotate 45 degrees around the axis of the refill at a speed of 2r / min to obtain a color matching eyebrow pencil refill with a circumferential spiral change, and finally flows through an extrusion die with a circular cross-sectional area to be extruded into a cylindrical color matching eyebrow pencil refill, and the color matching eyebrow pencil refill has three colors of red, blue and yellow distributed in the axial direction of the cylinder. The difference from Example 2 is that this color matching refill has a circumferential spiral change, such as Figure 5 As shown, it is more dynamic and artistic.

[0074] Example 6

[0075] In this embodiment, three types of refill materials are selected, namely, refill material A, refill material B and refill material C. The colors of refill material A, refill material B and refill material C are different. Refill material A is red, refill material B is blue, and refill material C is yellow. The three are respectively extruded into refill preform rods A, refill preform rods B and refill preform rods C through an extrusion molding process. The extruder used in this embodiment is an experimental twin-screw extruder. After extrusion, rod-shaped refill preform rods A, refill preform rods B and refill preform rods C are obtained.

[0076] Then, the refill preform rods A, B and C are combined into bundle preform rods of three fan-shaped color areas in a quantity ratio of 1:1:1, and the bundle preform rod assembly is added into an extruder and pressurized and heated to make the temperature in the feeding chamber higher than the upper limit temperature of the melting process of each wax base, so that the preform rods are combined with each other and the gas in the gap is excluded, and the preform rod assembly has a certain fluidity, and pressure is applied to the tightly combined bundle preform rod assembly at the feeding end of the extruder to make the bundle preform rod flow to the other end in the extruder to form, and finally the material body flows through an extrusion die head with a circular cross-sectional area to be extruded into a cylindrical color-matching eyebrow pencil refill, and the color-matching eyebrow pencil refill has red, blue and yellow three colors evenly distributed in the circumferential direction of the cylinder, and the color matching ratio of these three colors is 1:1:1.

[0077] The difference from Example 2 is that the transition between the colors of the three fan-shaped areas is relatively gentle, without obvious color boundaries and transition zones.

[0078] Example 7

[0079] The difference from Example 2 is that: in this embodiment, the cross-sectional shape of the extrusion die is designed to be triangular, and finally the material flows through the extrusion die with a triangular cross-section to be extruded into a triangular prism-shaped mixed color eyebrow pencil core, and the mixed color eyebrow pencil core has red, blue and yellow three colors of refills distributed in the axial direction of the triangular prism. The difference from Example 2 is that the cross-sectional shape of the formed mixed color eyebrow pencil core is not circular, but triangular.

[0080] In summary, there are many factors that affect the effect of color matching eyebrow pencil cores, such as the color of the preform rods of the cores and the proportion and matching method of their own materials, the mixing ratio of the preform rods when they are mixed into bundles, parameters such as extrusion temperature, whether the extrusion die head rotates during extrusion, and the cross-sectional shape of the extrusion die head. As long as one of these factors changes, different color matching effects can be achieved. The arrangement and combination of these different factors make the color matching eyebrow pencil core present an ever-changing and colorful visual effect, so that more colorful multi-color matching eyebrow pencil cores and multi-color matching eyebrow pencils can be produced.

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for processing and molding a multi-color eyebrow pencil core, characterized in that: The refill material is made into a preformed rod through an extrusion molding process, and then a plurality of preformed rods are gathered into a bundle according to a color combination design, and the bundled preformed rods are extruded to obtain a multi-color eyebrow pencil refill; The multi-color eyebrow pencil core presents at least two different and changing colors in the circumferential direction and / or the length direction.

2. The processing and forming method of the multi-color eyebrow pencil core according to claim 1, characterized in that: The preform is a single-color preform made by extruding a core material of one color.

3. The processing and forming method of the multi-color eyebrow pencil core according to claim 1, characterized in that: The preform is a multi-color preform made by extruding at least two colors of pencil core materials and presenting random or regular color changes in the length direction.

4. The processing and forming method of the multi-color eyebrow pencil core according to any one of claims 1 to 3, characterized in that: In the process of extruding the bundled preformed rods to obtain a multi-color eyebrow pencil core, a forming die is installed at the discharge end of the extruder. The forming die can rotate along the axial direction of the multi-color eyebrow pencil core to obtain a multi-color eyebrow pencil core with a circumferential spiral change effect.

5. The method for processing and forming a multi-color eyebrow pencil core according to claim 1, characterized in that: The color changes of the multi-color eyebrow pencil core in the circumferential direction and the length direction are random or regular.

6. The method for processing and forming a multi-color eyebrow pencil core according to claim 1, characterized in that: In the process of extruding a bundle of preformed rods to obtain a multi-color eyebrow pencil core, the boundary clarity between different colors of the multi-color eyebrow pencil core in the circumferential direction and the length direction is regulated by controlling the temperature of the extrusion molding process.

7. A multi-color eyebrow pencil core made by the processing and molding method according to any one of claims 1 to 6, characterized in that: The multi-color eyebrow pencil core presents at least two different and changing colors in the circumferential direction and / or the length direction.

8. The method for processing and forming a multi-color eyebrow pencil core according to claim 7, characterized in that: The color changes of the multi-color eyebrow pencil core in the circumferential direction and the length direction are random or regular.

9. The method for processing and forming a multi-color eyebrow pencil core according to claim 7 or 8, characterized in that: The multi-color matching eyebrow pencil core has a circumferential spiral change effect.

10. An application of the multi-color eyebrow pencil core as claimed in claim 7, characterized in that: The multi-color matching eyebrow pencil core is assembled into an eyebrow pencil, a lip liner or a colored pencil.

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