Multi-color pen refill as well as processing and forming method and application thereof

Abstract

The invention discloses a processing and forming method of a multi-color pen refill. The multi-color pen refill is made of pen refill materials with at least two different colors through extrusion granulation and extrusion forming procedures. Pen refill materials are extruded and granulated through an extruder to form pen refill color master batches, and then the pen refill color master batches of different colors are matched with a forming die head at the discharging end of the extruder through the extruder to be extruded and formed to form the multi-color pen refill. A plurality of different colors of refill color master batches are unevenly added into an extruder, and the extruded multi-color refill presents a changing color effect in the length direction and / or the circumferential direction. According to the multi-color pen refill, various colors are presented on a single pen refill in an industrial production mode, different colors of the multi-color pen refill can be designed by adjusting the mixing mode of color master batches of the pen refill, and the various colors can be randomly, regularly and gradually changed along with the using process. And abundant dynamic and three-dimensional display is brought.

Description

Technical Field

[0001] The invention relates to the technical field of cosmetics processing and production, and in particular to a multi-color pen 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 defects existing in the existing multi-color eyebrow pencil technology, the purpose of the present invention is to provide a processing and molding method of a multi-color pen core suitable for industrial production, which uses an extruder to produce a single pen core with multiple colors simultaneously through extrusion granulation and extrusion molding processes, and the cross-sectional area of ​​the pen core is of a conventional size. The multi-color pen core prepared by this process can simultaneously display 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. The present invention also provides a method for assembling the prepared multi-color pen 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 pen core, wherein the multi-color pen core is made of at least two different colors of pen core materials through extrusion granulation and extrusion molding processes;

[0013] The refill materials are extruded and granulated into refill masterbatches respectively through an extruder, and then the refill masterbatches of various colors are extruded and formed into multi-color refills through an extruder in combination with a molding die head at a discharge end of the extruder;

[0014] Pen core masterbatches of various colors are unevenly added into the extruder, and the extruded multi-color pen cores present a changing color effect in the length direction and / or the circumferential direction.

[0015] Using the above technical solution:

[0016] The present invention adopts an industrialized production method to realize the display of multiple colors on a single pen core. Specifically, an extruder is used to manufacture a single pen core with multiple colors at the same time through extrusion granulation and extrusion molding processes, and the cross-sectional area of ​​the pen core is of a conventional size. The multi-color pen core prepared by this process can display different colors at the same time 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. For example: the multiple colors of the pen core present a transition gradient effect without obvious dividing lines, and present the characteristics of color gradient when in use; the different colors of the pen core present an effect of alternating, and the color expresses a sense of jumping and rhythm during use.

[0017] The present invention uses an extruder as the core equipment for industrial production of multi-color refills. The refill material of the eyebrow pencil itself is 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 refill material of the eyebrow pencil, the refill material of the eyebrow pencil is suitable for extruder processing. The formula of the refill material of the eyebrow pencil with a solid content of 40% to 95% can be applied to the processing and molding method of the present invention. The formula of the refill material of the eyebrow pencil 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 formula of the refill material of the eyebrow pencil 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 of less 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.

[0018] The function of the extruder in the present invention runs through two main steps, the extrusion granulation process and the extrusion molding process. The extrusion granulation process is specifically: each refill material is processed and then extruded and granulated by an extruder to become a refill masterbatch. The extrusion molding process is specifically: a plurality of refill masterbatches of different colors are extruded and molded through an extruder and a molding die head at the discharge end of the extruder to form a multi-color refill. The extruder that performs the extrusion granulation function can be called an extrusion granulator, and the extruder that performs the extrusion molding function can be called an extrusion molding machine

[0019] 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, plunger extruder. Among them, single screw extruder and plunger extruder are not suitable as extrusion granulator.

[0020] Furthermore, the molding die head has a die opening design with different cross-sectional shapes.

[0021] After two or more refill materials are granulated into refill masterbatches by an extrusion granulator, the refill masterbatches are unevenly mixed and added to an extrusion molding machine. 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] Furthermore, when two or more refill masterbatches are unevenly mixed and added to the extruder, a variety of mixing and adding methods can be used to achieve rich refill color shaping and presentation by adjusting the adding method:

[0023] Specifically, the method of adding the masterbatch of multiple different colors of the pen core to the extruder in an uneven manner is uneven in the time sequence of adding and / or uneven in the spatial position of adding. The color change of the corresponding extruded multi-color pen core can be along the length direction of the pen core, can also be along the circumference direction of the pen core, or can be both changes at the same time.

[0024] For example, by alternately adding red and blue masterbatches into the extruder every second, the extruded multi-color pen refill will become a color-changing pen refill with red and blue alternating in the length direction.

[0025] For example, three masterbatch feeding ports are set at 120° intervals along the circumference of the extruder barrel, and masterbatches can be added synchronously. Then, three colors of masterbatches are added to the extruder every second in an alternating manner. Red, yellow and blue masterbatches are added in the previous second, and cyan, green and purple masterbatches are added in the next second. The extruded pen refill will become a color-changing pen refill with a fan-shaped three-color pattern that is almost evenly divided on the circumference, and a red, yellow and blue fan-shaped three-color pattern and a cyan, green and purple fan-shaped three-color pattern that alternates in the length direction.

[0026] Specifically, the uneven feeding method of the masterbatch of the multiple different colors of the pen cores is a random feeding method or a periodic feeding method. The color change of the corresponding extruded multi-color pen core can be random or regular.

[0027] For example, if a continuous extruder is used to perform extrusion molding of multi-color pen refills, then the extruder can be equipped with two or more feeding devices in the same feeding section, such as a feeding device for red pen refill masterbatch and a feeding device for blue pen refill masterbatch. Then, during the continuous extrusion process, the two feeding devices are opened and closed alternately at intervals of 1 second to feed. Then, the color of the pen refill material in the extruder barrel will show an alternating state of red and blue, and this alternating state will also be presented when the pen refill material is extruded from the extrusion port.

[0028] Furthermore, the boundary clarity between different colors of the multi-color pen core can be regulated by controlling the temperature of the extrusion molding process.

[0029] 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 masterbatch is deeply fused with each other during the extrusion process, the boundaries between the different colors of the multi-color pen core are not obvious, and the color change transition is soft;

[0030] 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 masterbatch during the extrusion process is shallow, the boundaries between the different colors of the multi-color pen core are clear and obvious, and the color change transition is sharp;

[0031] 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 is between the above two.

[0032] For example, in the tubular feeding chamber of the plunger extruder, one color of pen core masterbatch is added every 1 / 5 of the chamber length. For example, red, yellow, green, blue, and purple are added from the extruder head to the plunger. Then, the color of the pen core along the length of the pen core will change from red at the end to yellow, green, blue, and purple. Since the pen core masterbatch has a certain fluidity, when feeding into the feeding chamber, a certain proportion of the pen core masterbatch will be mixed with the adjacent color pen core masterbatch in the part where the masterbatch is connected to each other. This mixed part becomes the transition stage of the pen core's different color changes. When the extruder extrude the pen core, if the temperature in the feeding chamber is higher than the upper limit temperature of the wax-based melting range in the pen core material, the adjacent pen core masterbatches are more likely to melt and mix with each other, so the transition of color change will be relatively gentle. On the contrary, when the temperature of the extruder feeding chamber is lower than the lower limit temperature of the wax-based melting range in the refill material, the refill masterbatch is extruded and formed simply by screw pressure, and the adjacent refill masterbatch is more inclined to extrude and mix with each other, so the transition of color change will be relatively sharp. When the temperature of the extruder feeding chamber is between the upper and lower limits of the wax-based melting range, the color change between the refill masterbatch is between the above two effects. The performance of the above effect is also related to the composition and proportion of the refill material formula 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.

[0033] Another design is to set a refill masterbatch feeding port every 1 / 5 of the circumference of the tubular feeding chamber of the plunger extruder, and use the fluidity of the masterbatch to synchronously add the refill masterbatch of five colors, namely red, yellow, green, blue and purple, into the tubular feeding chamber of the extruder, so that there are five colors of refill masterbatch at any axial position in the feeding chamber. When the extruder extrude the refill, the five colors of refill materials will be extruded from the extruder head synchronously, and the colors of the refill will be different when viewed from different sides of the refill. The same high-temperature melt extrusion is used, and the degree of melting between the refill materials of different colors increases, and the color boundary line will be more blurred. On the contrary, when the extrusion temperature is low, the boundary color change transition of the five colors on the refill is sharp.

[0034] A second aspect of the present invention provides a multi-color pen core made by the above-mentioned processing and forming method, wherein the multi-color pen core has at least two different colors and presents a changing color effect in the length direction and / or the circumferential direction.

[0035] Furthermore, the color change of the multi-color pen core is random or regular.

[0036] Furthermore, the boundaries between the different colors of the multi-color pen core are not obvious, the color change transition is soft, and the color gradient is presented; or the boundaries between the different colors of the multi-color pen core are obvious, and the color change transition is sharp; or the boundary effect between the different colors of the multi-color pen core is between the above two.

[0037] A third aspect of the present invention provides an application of the multi-color pencil core, wherein the multi-color pencil core is manufactured into a multi-color eyebrow pencil through an eyebrow pencil assembly process.

[0038] The multi-color refill prepared by the present invention can be assembled on eyebrow pencils, lip liners, colored pencils and other pen tools that require solid refills. The eyebrow pencils or pen tools with the multi-color refills can display multiple colors at any time when used, and the display of multiple colors can achieve random or regular color changes during the use process, bringing rich dynamic and three-dimensional display.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] (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;

[0041] (2) Industrial extrusion granulation and extrusion molding operations make it possible to achieve more rich colors in a single refill, and the cross-sectional area of ​​the prepared multi-color refill is of conventional size, and the multi-color effect can be displayed without occupying more than one pen tip;

[0042] (3) The multi-color pen core prepared by the present invention can display different colors synchronously at the same moment of use without mechanical switching;

[0043] (4) The multi-color pen core prepared by the present invention can be designed with different colors by adjusting the mixing method of the pen core masterbatch, and the display of multiple colors can achieve random, regular, and gradual color changes during use, bringing rich dynamic and three-dimensional display;

[0044] (5) The multi-color pen core prepared by the present invention has a wide range of applications and can be assembled on eyebrow pencils, lip liner pencils, colored pencils and other pen tools that require solid pen cores for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] Figure 1 The figure is a process flow chart of the processing of the multi-color pen core in Example 1;

[0047] Figure 2 This is a schematic diagram of the method of feeding materials to the extruder in Example 3;

[0048] Figure 3 It is a schematic diagram of the method of feeding materials into the extruder and the structure of the pen core obtained in Example 4. DETAILED DESCRIPTION

[0049] 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.

[0050] Example 1

[0051] like Figure 1 As shown, in this embodiment, two kinds of refill materials are selected, namely, refill material A and refill material B, which have different colors. Refill material A and refill material B are extruded and granulated by an extrusion granulation process to obtain granular refill masterbatch A and refill masterbatch B. The extruder used in this embodiment is a test twin-screw extruder. After the extrusion granulation is completed, the granulation mechanism of the extruder is removed, the equipment is cleaned, and then a forming die head with a circular die opening is installed.

[0052] After the equipment is ready, the refill masterbatch A and refill masterbatch B are respectively fed into the extruder through the feeding devices located on the left and right sides of the extruder barrel. The feeding process is that the left and right feeding devices feed alternately, switching every 0.5 seconds. The temperature in the feeding chamber of the extruder is higher than the upper limit temperature of the wax-based melting range in the refill material.

[0053] Finally, a single two-color pen core with A / B colors alternating along the length direction is continuously extruded through the die opening of the forming die head, and the two colors on the two-color pen core are arranged relatively evenly along the extrusion direction. The two colors have alternating left and right periodic changes, but there is no obvious color dividing line.

[0054] Example 2

[0055] 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. Each of them is extruded and granulated through an extrusion granulation process to obtain granular refill masterbatch A, refill masterbatch B and refill masterbatch C. The extruder used in this embodiment is a test twin-screw extruder. After the extrusion granulation is completed, the granulation mechanism of the extruder is removed, the equipment is cleaned, and then a forming die head with a circular die opening is installed.

[0056] Pen core masterbatch A, pen core masterbatch B and pen core masterbatch C are fed into the extruder through a random stirring hopper in a ratio of 2:2:1. The temperature in the feeding chamber of the extruder is between the upper and lower limit temperatures of the wax base melting range in the pen core material.

[0057] Finally, the single pen core extruded through the die of the forming die head presents irregularly mixed and dispersed three colors of A, B, and C, and the pen core also presents a gradient color between the three colors. There is no strict rule to follow for the color change of the pen core.

[0058] Example 3

[0059] In this embodiment, two kinds of refill materials are selected, 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. They are extruded and granulated by the extrusion granulation process to obtain granular refill masterbatch A and refill masterbatch B. The extruder used in this embodiment is a test twin-screw extruder. After the extrusion granulation is completed, the granulation mechanism of the extruder is removed, the equipment is cleaned, and then a forming die head with a circular die opening is installed.

[0060] like Figure 2 As shown, the refill masterbatch A and the refill masterbatch B are alternately added into the extruder for 1 second, and the temperature in the feeding chamber of the extruder is lower than the lower limit temperature of the wax base melting range in the refill material.

[0061] Finally, the pen core is continuously extruded through the die opening of the forming die head to obtain a pen core with red / blue colors alternately changing in the axial direction of the pen core.

[0062] Example 4

[0063] In this embodiment, 6 kinds of refill materials are selected, and the colors of refill materials A1, A2, A3 and refill materials B1, B2, B3 are different. Refill materials A1, A2, A3 are red, yellow, and blue, respectively, and refill materials B1, B2, B3 are cyan, green, and purple, respectively. After extrusion granulation, each of them is extruded and granulated to obtain granular refill masterbatch A1, A2, A3 and refill masterbatch B1, B2, B3. The extruder used in this embodiment is a test twin-screw extruder. After extrusion granulation is completed, the granulation mechanism of the extruder is removed, the equipment is cleaned, and then a forming die head with a circular die opening is installed.

[0064] like Figure 3 As shown, the pen core masterbatches A1, A2, and A3 are synchronously added to the extruder from the feeding heads distributed around the circumference of the extruder, and then the pen core masterbatches B1, B2, and B3 are synchronously added to the extruder from the feeding heads distributed around the circumference of the extruder. The pen core masterbatches A1, A2, A3 and the pen core masterbatches B1, B2, and B3 are alternately added to the extruder with a duration of 1 second, and the temperature in the feeding chamber of the extruder is lower than the lower limit temperature of the wax-based melting range in the pen core material.

[0065] Finally, the pen core is continuously extruded through the die opening of the forming die head to obtain a pen core with three colors distributed in a fan shape on the circumference of the pen core and with different colors changing alternately in the axial direction.

[0066] Example 5

[0067] The multi-color pen core processed in Example 2 is assembled to one end of a double-headed eyebrow pencil, and an eyebrow powder brush is installed on the other end of the double-headed eyebrow pencil, so that an eyebrow pencil with both dual-head functions and multi-color presentation can be obtained, which brings an aesthetic experience different from the traditional one.

[0068] 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 pen core, characterized in that: The multi-color pen core is made of at least two different colors of pen core materials through extrusion granulation and extrusion molding processes; The refill materials are extruded and granulated into refill masterbatches respectively through an extruder, and then the refill masterbatches of various colors are extruded and formed into multi-color refills through an extruder in combination with a molding die head at a discharge end of the extruder; Pen core masterbatches of various colors are unevenly added into the extruder, and the extruded multi-color pen cores present a changing color effect in the length direction and / or the circumferential direction.

2. The processing and forming method of the multi-color pen core according to claim 1, characterized in that: The uneven addition of the master batches of various colors of the refills to the extruder is uneven in the time sequence of the addition and / or uneven in the spatial position of the addition.

3. The processing and forming method of the multi-color pen core according to claim 2, characterized in that: The uneven feeding method of the masterbatch of various colors of pen cores is a random feeding method or a periodic feeding method.

4. The processing and forming method of the multi-color pen core according to claim 1, characterized in that: The clarity of the boundaries between the different colors of the multi-color pen core can be regulated by controlling the temperature of the extrusion molding process.

5. The method for processing and forming a multi-color pen core according to claim 4, characterized in that: When the temperature of the extrusion molding process is higher than the upper limit temperature of the wax base melting process in the refill material, the boundaries between the different colors of the multi-color refill are not obvious, and the color change transition is soft; 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 boundaries between the different colors of the multi-color pen core are clear and obvious, and the color change transition is sharp; 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 is between the above two.

6. The method for processing and forming a multi-color pen core according to claim 1, characterized in that: The molding die head has a die opening design with different cross-sectional shapes.

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

8. The multi-color pen refill according to claim 7, characterized in that: The color change of the multi-color pen core is random or regular.

9. The multi-color pen refill according to claim 7, characterized in that: The boundaries between the different colors of the multi-color pen core are not obvious, the color change transition is soft, and the color gradient is presented; or the boundaries between the different colors of the multi-color pen core are obvious, and the color change transition is sharp; or the boundary effect between the different colors of the multi-color pen core is between the above two.

10. A use of the multi-color pen core as claimed in claim 7, characterized in that: The multi-color pencil core is manufactured into a multi-color eyebrow pencil through an eyebrow pencil assembly process.

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