CN113580812A

CN113580812A - Liquid storage element and painting tool

Info

Publication number: CN113580812A
Application number: CN202010368233.2A
Authority: CN
Inventors: 曹海英
Original assignee: Shaoxing Shangyu Jizhen Trade Co ltd
Current assignee: Shaoxing Shangyu Jizhen Trade Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-11-02
Also published as: WO2021218009A1

Abstract

The invention discloses a liquid storage element which is used for storing and releasing liquid in an application tool, the liquid storage element is made by bonding bicomponent fibers, the inside of the liquid storage element is provided with a three-dimensional structure of a three-dimensional network, the bicomponent fibers are provided with a skin layer and a core layer, and the liquid storage element transmits the liquid to an application head of the application tool or transmits the liquid to the application head of the application tool through a water guide core of the application tool. When the coating and writing tool using the liquid storage element is used, the liquid is stable to discharge, and the residual liquid amount is small.

Description

Liquid storage element and painting tool

Technical Field

The invention relates to a liquid storage element and a painting tool, in particular to a liquid storage element which is made by bonding bicomponent fibers and has a three-dimensional structure with a three-dimensional network inside.

Background

In the field of controlled liquid release technology, such as in markers, it is common to use a core formed by coating a fiber bundle with a film as a material for storing liquid. The liquid output of the rolled core can be gradually reduced along with the increase of the using time, and the rolled core has the defect of large residual liquid amount. The direct liquid type writing tool overcomes the defects of the coiled core type writing tool, but generally has a more complex structure, high cost and easy leakage. In addition, many writing fluids have relatively large particles which tend to settle in direct fluid writing instruments and affect writing performance.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a liquid storage element for storing and releasing liquid in a writing instrument, the liquid storage element is made of bonded bicomponent fibers with a three-dimensional structure of a three-dimensional network inside, the bicomponent fibers are provided with a skin layer and a core layer, and the liquid storage element transmits the liquid to a writing head of the writing instrument or transmits the liquid to the writing head of the writing instrument through a water guide core of the writing instrument.

Further, the liquid storage element is provided with a liquid storage element through hole which axially penetrates through the liquid storage element.

Further, the liquid storage element includes only a liquid storage portion.

Further, the liquid storage element comprises a liquid storage part and a liquid collecting part with density higher than that of the liquid storage part.

Further, the liquid storage element comprises a liquid storage part and a density increasing part.

Further, the liquid storage element includes a liquid storage portion and a liquid collection portion, and a density increasing portion provided between the liquid storage portion and the liquid collection portion.

Further, the density of the liquid storage part is 0.03 g/cm³To 0.12 g/cm³。

Further, the density of the liquid storage part is 0.04 g/cm³To 0.09 g/cm³。

Further, the density of the liquid storage part is 0.05 g/cm³To 0.07 g/cm³。

Further, the skin layer and the core layer are of a concentric structure or an eccentric structure.

Further, the core layer of the bicomponent fiber is higher than the melting point of the sheath layer by 20 ℃ or more.

Further, the bicomponent fiber is a filament or a staple.

Further, the skin layer is a polyolefin.

Further, the skin layer is polyethylene or polypropylene.

Further, the skin layer is polyamide.

The invention also provides an applicator comprising an applicator head and a reservoir element as described above, the applicator head being connected directly or indirectly to the reservoir element.

Furthermore, the painting tool also comprises a water diversion core, and the painting head is connected with the liquid storage element through the water diversion core.

Further, the liquid storage element is provided with a liquid storage element through hole which axially penetrates through the liquid storage element, and the smearing head and the water diversion shaft axially penetrate through the whole liquid storage element through hole.

Further, the applicator head and the wick extend through a portion of the through-hole of the reservoir element.

Further, the applicator includes a receiving chamber for receiving the reservoir element.

Further, the painting tool further comprises a painting tool housing, and a gap is arranged between the outer wall of the accommodating chamber and the inner wall of the painting tool housing.

The reservoir component, which is made of bicomponent fibers bonded together, can be formed into various shapes and easily assembled in various shaped writing instruments. The liquid storage element is internally provided with a three-dimensional structure of a three-dimensional network, and liquid is stored in capillary gaps of the three-dimensional network and is not easy to leak in the processes of storage, transportation and use. If the liquid contains solid particles, the solid particles are uniformly dispersed in the capillary spaces of the three-dimensional network, and the solid particles are prevented from settling. The liquid storage element disclosed by the invention is low in density, high in porosity, stable in liquid release, less in residual quantity after being used, and greatly improved in user experience. The liquid storage element can be provided with a through hole in the axial direction, so that the coating and writing head and the water diversion core can be conveniently inserted. In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

FIG. 1a is a schematic longitudinal cross-sectional view of a first disclosed embodiment of a writing instrument;

FIG. 1b is a schematic cross-sectional view of the reservoir component of FIG. 1 a;

FIG. 1c is an enlarged cross-sectional view of the bicomponent fiber of FIG. 1b in a concentric sheath-core configuration;

FIG. 1d is an enlarged cross-sectional view of the bicomponent fiber of FIG. 1b in an eccentric sheath-core configuration;

FIG. 2 is a schematic longitudinal cross-sectional view of a second disclosed embodiment of a writing instrument;

FIG. 3 is a schematic longitudinal cross-sectional view of a third disclosed embodiment of a coating tool;

FIG. 4a is a schematic longitudinal cross-sectional view of a fourth disclosed embodiment of a writing instrument;

FIG. 4b is a schematic longitudinal cross-sectional view of another writing instrument according to a fourth embodiment of the present disclosure;

FIG. 5 is a schematic longitudinal cross-sectional view of a fifth disclosed embodiment of a coating tool.

In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.

Unless otherwise defined, terms used herein, including technical and scientific terms, have the ordinary meaning as understood by those skilled in the art. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

First embodiment

FIG. 1a is a schematic longitudinal cross-sectional view of a first disclosed embodiment of a writing instrument; FIG. 1b is a schematic cross-sectional view of the reservoir component of FIG. 1 a; FIG. 1c is an enlarged cross-sectional view of the bicomponent fiber of FIG. 1b in a concentric sheath-core configuration; FIG. 1d is an enlarged cross-sectional view of the bicomponent fiber of FIG. 1b in an eccentric sheath-core configuration.

As shown in FIG. 1a, a liquid storage element 100 according to a first embodiment of the present invention for storing and releasing liquid in an applicator 1, the liquid storage element 100 being made of bonded bicomponent fibers 2 having a three-dimensional structure with a three-dimensional network inside, the bicomponent fibers 2 having a sheath layer 21 and a core layer 22, the liquid storage element 100 transferring liquid to an applicator head 50 of the applicator 1 or to the applicator head 50 of the applicator 1 through a wicking core 31 of the applicator 1.

< liquid storage element >

The reservoir member 100 can be formed in any suitable geometric shape, such as a cylindrical shape, a square cylindrical shape, an elliptical cylindrical shape, etc., depending on the interior space of the applicator housing 60 or the receiving chamber 61 of the applicator 1. The reservoir member 100 may be provided with a reservoir member through-hole 130 extending axially through the reservoir member 100 to facilitate installation of the applicator tip 50 and the wick 31.

The liquid storage element 100 may include only the liquid storage portion 121, or include the liquid storage portion 121 and the liquid collection portion 122 having a density higher than that of the liquid storage portion 121, or include the liquid storage portion 121 and the density increasing portion 125, or include the liquid storage portion 121, the liquid collection portion 122, and the density increasing portion 125 having a density increasing from the liquid storage portion 121 to the liquid collection portion 122.

The higher density portion of the liquid collection portion 122 or the density increasing portion 125 may be brought into contact with the coating head 50, and the lower density end of the liquid collection portion 122 or the density increasing portion 125 may be brought into abutment with the liquid reservoir 121. This arrangement allows liquid to be concentrated from less dense areas to more dense areas during use, thereby improving the stability of writing and reducing the amount of liquid remaining in the reservoir component 100 after use. It is also possible to provide reservoir member 100 with a reservoir 121 and a collector 122 and a density increasing section 125 disposed between reservoir 121 and collector 122 by partial radial compression.

In this embodiment, the liquid storage element 100 only includes the liquid storage portion 121, and the density of the liquid storage portion 121 is 0.03 g/cm³To 0.12 g/cm³E.g. 0.03 g/cm³0.04 g/cm³0.05 g/cm³0.07 g/cm³0.09 g/cm³0.12 g/cm³Preferably 0.04 g/cm³To 0.09 g/cm³More preferably 0.05 g/cm³To 0.07 g/cm³. When the density of the liquid storage part 121 is less than 0.03 g/cm³The liquid storage element 100 is difficult to manufacture. When the density of the liquid storage part 121 is 0.03 g/cm³To 0.04 g/cm³In the meantime, the strength of the liquid storage element 100 with the through hole arranged in the axial direction is slightly insufficient, and the liquid storage element is not easy to assemble. When the density of the liquid storage part 121 is more than 0.12 g/cm³In the meantime, the liquid discharge efficiency using the post-stage liquid storage element 100 is poor, and the residual liquid after use is high.

At the preferred 0.04 g/cm³To 0.09 g/cm³In the density range of the liquid storage part 121, the proper density of the liquid storage part 121 is selected according to the viscosity, the surface tension and the application requirements of the stored liquid, so that the porosity of the liquid storage part 121 is high, the liquid storage capacity is large, the release performance is good, and the manufacture of the writing tool 1 with excellent performance is facilitated.

It is noted that to prevent leakage during storage, transport, and use, the volume of liquid loaded into the reservoir member 100 is preferably no more than 90% of the capillary void volume in the reservoir member 100.

< bicomponent fiber >

As shown in fig. 1c and 1d, the liquid storage member 100 according to the present embodiment is made by bonding bicomponent fibers 2, having a three-dimensional network three-dimensionally inside, the bicomponent fibers 2 having a sheath layer 21 and a core layer 22. The fibers may be bonded with a binder, plasticizer, or heat, preferably heat to avoid introducing impurities during the process of making the liquid storage element 100. The fiber component in the present invention means a polymer for making a fiber. Additives for the surface of the fibers, such as surfactants, are not considered to be components of the fibers. The liquid storage element 100 of this embodiment can be wetted by the stored liquid, and a surfactant can be added to change the ability of the liquid storage element 100 to be wetted by the liquid.

As shown in fig. 1c, the skin layer 21 and the core layer 22 may be of a concentric structure. As shown in fig. 1d, the skin layer 21 and the core layer 22 may also be of an eccentric structure. Alternatively, the liquid storage element 100 may be formed using bicomponent fibers 2 in a side-by-side configuration, but thermal bonding is difficult. Of course, the liquid storage element 100 can also be made of a three-component skin-core structure fiber, but the three-component skin-core structure fiber is difficult to manufacture, high in cost and poor in cost performance.

The bicomponent fibers 2 are filaments or staple fibers. The liquid storage element 100 made of the filaments is high in strength, and the liquid storage element 100 made of the staple fibers is good in elasticity. The manufacturer can select the appropriate bicomponent fibers 2 to form a reservoir component 100 of the appropriate density and shape based on the performance requirements of the reservoir component 100.

The core layer 22 of the bicomponent fiber 2 of this example has a melting point higher than that of the sheath layer 21 by 20 ℃ or more. The core layer 22 of the bicomponent fiber 2 has a melting point higher than that of the sheath layer 21 by more than 20 ℃, so that the core layer 22 can maintain certain rigidity during thermal bonding between fibers, and the liquid storage element 100 can be conveniently molded.

The sheath 21 of the bicomponent fiber 2 may be polyethylene, polypropylene or other polyolefin. Polyolefins are polymers of olefins, and are generally a generic name for thermoplastic resins obtained by polymerizing or copolymerizing an α -olefin such as ethylene, propylene, 1-butene, 1-pentene, 1-hexene, or the like, alone. Polyolefins have an inert molecular structure, contain no reactive groups on the molecular chain, and hardly react with liquid components in the field of application of the present invention, and therefore have unique advantages.

When the skin layer 21 is polyethylene, such as linear low density polyethylene, low density polyethylene or high density polyethylene, the core layer 22 may be polypropylene, polyethylene terephthalate, or the like. When the skin layer 21 is polypropylene, the core layer 22 may be polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), or the like. In addition, polyamide can also be used as the skin layer 21, and the polyamide is rich in elasticity and is beneficial to manufacturing the liquid storage element 100 with low density.

The bicomponent fiber 2 has a denier of 1 to 15, preferably 1.5 to 10. Bicomponent fibers 2 having a sheath-core structure of less than 1 denier are difficult and costly to manufacture. A liquid storage element 100 made of fibers above 15 denier has insufficient capillary force and is prone to leakage. Sheath-core bicomponent fibers 2 of between 1 and 15 denier are readily thermally bonded into a liquid storage element 100 of lower density and suitable capillary force, with sheath-core bicomponent fibers 2 of between 1.5 and 10 denier being particularly suitable and less costly. Bicomponent fibers 2 of different deniers may be blended to form the reservoir component 100 to optimize the storage and delivery of liquids or to reduce costs. It is also possible to reduce costs by incorporating some monocomponent fibers, such as polypropylene fibers, into the bicomponent fibers 2 without affecting the processing and performance of the liquid storage member 100.

In this embodiment, it is preferred that the bicomponent fiber 2 have a denier of 1.5, 2, 3 or 6, the sheath 21 is polyethylene having a melting point of about 130 ℃, the core 22 is polypropylene having a melting point of about 165 ℃, and the reservoir 121 has a density of 0.04 to 0.09 g/cm³The liquid storage element 100 has the advantages of large liquid storage capacity, stable release, low residual liquid amount and the like.

< accommodation Chamber >

The accommodating chamber 61 is a housing for accommodating the liquid storage element 100, and may be made of plastic, metal, or the like, or may be made of a paper-plastic composite film, a paper-aluminum-plastic composite film, or the like. The cross-sectional shape of the receiving chamber 61 may be circular, rectangular, oval, etc. to match the shape of the reservoir component 100.

The receiving chamber 61 may be an integral part of the writing instrument 1 or may be a separate component. The reservoir 100 and the receiving chamber 61 can be assembled into a replaceable unit so that other parts of the applicator 1 can be reused to reuse resources.

< Water diversion core >

In the present invention, fluid can be conducted from the reservoir 100 to the applicator head 50 through the wick 31. The wick 31 is capable of absorbing liquid from the reservoir member 100 and maintaining a relatively constant liquid content in the wick 31, thereby improving the stability of the writing and reducing the amount of liquid remaining in the reservoir member 100 after use. For applicator heads 50 that are not adapted to be directly connected to the reservoir element 100, such as some eyeliner bristles, the wick 31 may be conveniently connected to the reservoir element 100.

The fiber density of the core wrap is typically between 0.15 g/cm³To 0.3 g/cm³In the invention, the density of the liquid storage part 121 is 0.03 g/cm³To 0.12 g/cm³Preferably 0.04 g/cm³To 0.09 g/cm³In the present invention, the capillary force of the liquid storage part 121 is significantly reduced compared to the general roll core, which is very advantageous for the liquid release and the reduction of the residue. However, it is disadvantageous in that the liquid storage element 100, when used alone, is susceptible to leakage due to its low capillary force. The invention creatively combines the liquid storage element 100 and the water diversion core 31, inserts the water diversion core 31 in the liquid storage element 100, and greatly improves the leakage-proof capability of the painting tool 1 based on the high capillary force of the water diversion core 31, and the leakage cannot occur even if the length of the liquid storage part 121 reaches 60-80 mm. In use, the wick 31 continuously absorbs liquid from the liquid storage element 100 and transfers it to the applicator tip 50, resulting in a steady and smooth release of liquid with a low residual rate. The contradiction between the leakage prevention and release stability and the liquid residue after use in the painting and writing tool 1 is well solved.

< writing Instrument >

As shown in FIG. 1a, a reservoir component 100 according to the present invention can be used to store and dispense a liquid in an applicator 1, the applicator 1 delivering the liquid to a writing head 50 of the applicator 1 through a wick 31 of the applicator 1.

The applicator 1 according to the present invention includes an applicator head 50 and a reservoir 100, the applicator head 50 being connected directly or indirectly to the reservoir 100.

The applicator 1 further includes a wick 31, one end of the wick 31 being connected to the applicator head 50 and the other end of the wick 31 being connected to the reservoir member 100, whereby the applicator head 50 is connected to the reservoir member 100 through the wick 31.

The applicator 1 of the present embodiment further includes an applicator housing 60 and a receiving chamber 61 for receiving the liquid storage element 100. A gap is provided between the outer wall of the housing chamber 61 and the inner wall of the applicator housing 60. Ribs can be provided on the inner wall of the applicator housing 60 of the applicator 1 so that a gap is formed between the inner wall of the applicator housing 60 and the outer wall of the receiving chamber 61. The gap can avoid the pressure difference formed at the two ends of the liquid storage element, so that the painting is smooth, and the liquid leakage risk of the painting tool is reduced.

The applicator 1 according to this embodiment further includes an applicator head mount 10, the applicator head mount 10 being disposed at the front end of the applicator housing 60 for supporting the applicator head 50. An air intake hole is provided in the head base 10, not shown.

During application, the applicator tip 50 releases liquid and replenishes liquid from the reservoir 100 through the wick 31. The outside air is supplied to the liquid storage element 100 through the air inlet hole on the head base 10.

In this embodiment, the liquid storage part 121 is a liquid storage element 100, and in order to intuitively describe the relationship between the density of the liquid storage part 121 and the usage effect, the liquid storage element 100 with different densities is manufactured and the corresponding writing tool 1 is assembled to perform the writing test. The liquid storage component 100 is made of 2 denier bicomponent staple fibers thermally bonded, with the skin layer 21 being polyethylene and the core layer 22 being polypropylene. The liquid storage element 100 has an outer diameter of 5.7 mm, a through hole diameter of 1.8 mm, a length of 62 mm, and a volume of 1.42 cm³The density of the liquid storage part 121 is 0.04 g/cm³0.05 g/cm³0.07 g/cm³0.09 g/cm³0.12 g/cm³And 0.15 g/cm³1.00 g of the coating liquid is injected.

And (4) carrying out scribing test by using a scribing instrument, weighing the liquid output amount every time 25 meters is drawn, and repeating the test for 21 times for each product. And calculating the data to obtain the average value and the coefficient of variation of the liquid outlet amount per meter, and the liquid residual rate and the coefficient of variation after marking for 200 meters. The results are given in the following table, wherein the density is given in grams/cm³Abbreviated as g/cm³(ii) a The length of the scribe line is in meters, abbreviated as m; the average of the liquid amount is abbreviated as IL unit as mg; coefficient of variation, abbreviated CV, is the standard deviation divided by the mean.

The test result shows that the concentration of the catalyst is 0.04 g/cm³To 0.15 g/cm³The lower the density of the reservoir component 100, the lower the attenuation during the first 150 meters of scoring. The density is 0.04 g/cm³To 0.12 g/cm³When the liquid level is within the range, the liquid output attenuation of 200 m of the drawn line is not more than 50%, and the average liquid residue is not more than 30%. And when the density is 0.15 g/cm³In time, the liquid yield during scribing decays significantly and the average liquid residue exceeds 37%. It is generally believed that the smaller the drop off during scribing, the better the user experience. The smaller the liquid residue, the higher the liquid utilization efficiency.

Considering the stability of the liquid discharge amount during the scribing process, the residual liquid rate after scribing 200 m, and the convenience of manufacturing and assembling the liquid storage element 100, the invention determines that the suitable density range of the liquid storage part 121 is 0.03 g/cm³To 0.12 g/cm³Preferably 0.04 g/cm³To 0.09 g/cm³。

Second embodiment

Fig. 2 is a schematic view of a second embodiment of the disclosed writing tool 1. The structure of this embodiment is similar to that of the first embodiment, and the same parts as those of the first embodiment are not described again in the description of this embodiment.

As shown in FIG. 2, a second embodiment of an applicator 1 according to the present invention comprises a reservoir element 100, an applicator tip 50, an applicator tip carrier 10, an applicator housing 60, and a wick 31. The applicator tip 50 is connected to the reservoir 100 by a wicking core 31.

In this embodiment, the liquid storage element 100 is made of bicomponent filaments through thermal bonding, the water-guiding core 31 penetrates all through the through holes 130 of the liquid storage element, a three-dimensional network is formed inside the liquid storage element 100, the fineness of the bicomponent fibers 2 is 3 denier, the skin layer 21 is polyethylene, and the density of the liquid storage part 121 is 0.04 g/cm³To 0.07 g/cm³. Reservoir component 100 proximity coatingPortions of the write head 50 are pressed by the receiving chamber 61 to form the density increasing portion 125. The density increasing section 125 contributes to the enrichment of the application liquid near the application head 50 in the use process, improves the application fluency, and reduces the residual liquid amount.

Third embodiment

Fig. 3 is a schematic view of a third embodiment of the disclosed writing tool 1. The structure of this embodiment is similar to that of the first embodiment, and the same parts as those of the first embodiment are not described again in the description of this embodiment.

As shown in FIG. 3, a third embodiment of an applicator 1 according to the present invention includes a reservoir element 100, an applicator tip 50, an applicator tip carrier 10, an applicator housing 60, and a wick 31.

In this embodiment, the liquid storage element 100 is made of bicomponent filaments through thermal bonding or plasticizer bonding, and is provided with liquid storage element through holes 130, a three-dimensional network three-dimensional structure is formed inside the liquid storage element 100, the fineness of the bicomponent fiber 2 is 10 denier, the skin layer 21 is polyamide, and the density of the liquid storage part 121 is 0.09 g/cm³To 0.12 g/cm³. Reservoir element 100 also includes a liquid trap 122 having a higher density than reservoir 121. One end of the applicator tip 50 is inserted into the fluid collection portion 122 and abuts the wick 31, with the applicator tip 50 and wick 31 extending through the entire reservoir element through-hole 130. The reservoir through-holes 130 of the reservoir 100 may be uniformly dense with an applicator tip 50 having a larger diameter than the wicking core 31 such that a portion of the reservoir 100 is radially compressed by the applicator tip 50 to form the fluid collection portion 122.

During use, the liquid collecting part 122 collects the coating liquid from the liquid storage part 121, and the liquid collecting part 122 and the water leading core 31 simultaneously provide the coating liquid for the coating head 50, so that coating and writing are smooth, and the residual liquid amount is reduced.

Fourth embodiment

Fig. 4a and 4b are schematic views of a fourth embodiment of the disclosed applicator 1. The structure of this embodiment is similar to that of the first embodiment, and the same parts as those of the first embodiment are not described again in the description of this embodiment.

As shown in FIGS. 4a and 4b, an applicator 1 according to a fourth embodiment of the present invention includes a reservoir 100, an applicator tip 50, an applicator tip carrier 10, an applicator housing 60, and a wick 31.

In this embodiment, the liquid storage element 100 is made of bicomponent staple fibers through thermal bonding, and is provided with liquid storage element through holes 130, a three-dimensional network structure is formed inside the liquid storage element 100, the fineness of the bicomponent staple fibers 2 is 3 denier, the skin layer 21 is polyethylene, the core layer 22 is polypropylene, and the density of the liquid storage part 121 is 0.05 g/cm³To 0.07 g/cm³. The portion of the reservoir element 100 adjacent to the applicator tip 50 is compressed by the applicator tip 50 to form a liquid collection portion 122 and an incremental density portion 125. The applicator tip 50 and the wick 31 extend through most of the reservoir element through-hole 130 of the reservoir element 100, as shown in FIG. 4 a; or the writing head 50 and the wick 31 extend through the entire reservoir 100 through-hole 130 as shown in FIG. 4 b. When other conditions are the same, the applicator head 50 and the wick 31 are more leakproof throughout the entire bore of the reservoir 100 than through only a portion of the bore of the reservoir 100. The density increasing part 125 and the liquid collecting part 122 are beneficial to enriching the coating liquid near the coating head 50 in the using process, so that the coating fluency is improved, and the residual liquid amount is reduced.

In this embodiment, the integrated applicator tip 50 and wick 31 can be used to facilitate assembly and stabilize liquid conduction.

Fifth embodiment

Fig. 5 is a schematic view of a fifth embodiment of the disclosed applicator 1. The structure of this embodiment is similar to that of the first embodiment, and the same parts as those of the first embodiment are not described again in the description of this embodiment.

As shown in FIG. 5, a fifth embodiment of the invention, an applicator 1, includes a reservoir 100, an applicator head 50, a head mount 10, and an applicator housing 60, in this embodiment without a wick 31, with the applicator head 50 attached to the reservoir 100.

In this embodiment, the liquid storage element 100 is made of bicomponent staple fibers through thermal bonding or bonding with an adhesive, and is provided with liquid storage element through holes 130, a three-dimensional network is formed inside the liquid storage element 100, the fineness of the bicomponent fibers 2 is 6 denier, the skin layer 21 is polyethylene or polypropylene, and the density of the liquid storage part 121 is 0.03 g/cm³To 0.05 g/cm³. Liquid storage part of the embodiment121 has lower density, and is beneficial to releasing large particles in the coating liquid. The portion of the reservoir element 100 adjacent to the applicator tip 50 is compressed by the applicator tip 50 to form a liquid collection portion 122 and an incremental density portion 125. In this embodiment, the reservoir member 100 is of a relatively short length and the write head 50 extends through a portion of the reservoir member through-hole 130. The density increasing part 125 and the liquid collecting part 122 are beneficial to enriching the coating liquid near the coating head 50 in the using process, so that the coating fluency is improved, and the residual liquid amount is reduced.

In summary, the liquid storage element and the painting tool using the liquid storage element have the advantages of simple structure, convenience in use, low cost and difficulty in liquid leakage, and are very suitable for painting tools such as marking pens, white board pens, highlighters, sign pens, eyeliners, lip liners and the like.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes be made by those skilled in the art without departing from the spirit and technical spirit of the present invention, and be covered by the claims of the present invention.

Claims

1. A reservoir element (100) for storing and releasing liquid in an applicator (1), the reservoir element (100) being made of bonded bicomponent fibers (2) having a three-dimensional network of three-dimensional structures inside, the bicomponent fibers (2) having a sheath (21) and a core (22), the reservoir element (100) delivering liquid to an applicator tip (50) of the applicator (1) or to the applicator tip (50) of the applicator (1) through a water-conducting core (31) of the applicator (1).

2. A reservoir element as defined in claim 1, wherein the reservoir element (100) is provided with a reservoir element through-hole (130) extending axially through the reservoir element (100).

3. A reservoir component as defined in claim 1, wherein the reservoir component (100) comprises only a reservoir portion (121).

4. A reservoir element as claimed in claim 1, characterized in that the reservoir element (100) comprises a reservoir portion (121) and a liquid collecting portion (122) having a higher density than the reservoir portion (121).

5. A reservoir component as defined in claim 1, wherein the reservoir component (100) comprises a reservoir portion 121 and an incremental density portion (125).

6. A reservoir component as defined in claim 1, wherein the reservoir component (100) comprises a reservoir portion (121) and a collector portion (122) and a density increasing portion (125) disposed between the reservoir portion (121) and the collector portion (122).

7. A reservoir element as claimed in any one of claims 3 to 6, characterized in that the density of the reservoir (121) is 0.03 g/cm³To 0.12 g/cm³。

8. A liquid storage element as claimed in claim 7, characterized in that the density of the liquid storage portion (121) is 0.04 g/cm³To 0.09 g/cm³。

9. A liquid storage element as claimed in claim 8, characterized in that the density of the liquid storage portion (121) is 0.05 g/cm³To 0.07 g/cm³。

10. A liquid storage element as claimed in claim 1, characterized in that the skin layer (21) and the core layer (22) are of concentric or eccentric configuration.

11. A liquid storage element according to claim 1, characterized in that the core layer (22) of the bicomponent fibres (2) has a melting point higher than that of the sheath layer (21) by more than 20 ℃.

12. A liquid storage element according to claim 1, characterized in that the bicomponent fibres (2) are filaments or staple fibres.

13. A liquid storage element as claimed in claim 1, characterized in that the skin layer (21) is a polyolefin.

14. A liquid storage element as claimed in claim 13, characterized in that the skin layer (21) is polyethylene or polypropylene.

15. A liquid storage element as claimed in claim 1, characterized in that the skin layer (21) is polyamide.

16. An applicator, characterized in that the applicator (1) comprises an applicator tip (50) and a reservoir element (100) according to any one of claims 1 to 15, the applicator tip (50) being connected directly or indirectly to the reservoir element (100).

17. The applicator of claim 16, wherein the applicator (1) further comprises a wicking core (31), the applicator tip (50) being connected to the reservoir element (100) through the wicking core (31).

18. The applicator tool according to claim 17, wherein the reservoir element (100) is provided with a reservoir element through hole (130) extending axially through the reservoir element (100), the applicator head (50) and the wick (31) extending axially through all of the reservoir element through hole (130).

19. The applicator of claim 17, wherein the applicator tip (50) and the wick (31) extend through a portion of the reservoir element through-hole (130).

20. The applicator of claim 16, wherein the applicator (1) further comprises a receiving chamber (61) for receiving the reservoir element (100).

21. The applicator of claim 20, wherein the applicator (1) further comprises an applicator housing (60), and wherein a gap is provided between an outer wall of the receiving chamber (61) and an inner wall of the applicator housing (60).