RU2762716C2 - Brush containing mono-fiber mixture - Google Patents

Abstract

FIELD: painting materials.

SUBSTANCE: invention relates to brush 1 containing a mono-fiber mixture of three different types of mono-fibers 21, 22, 23. Brush 1 contains handle 10 having on one end bristle holder 20 and a set of mono-fibers 21, 22, 23 fixed in bristle holder 20, while the set of mono-fibers 21, 22, 23 contains mono-fibers 23 of the first type, mono-fibers 22 of the second type and mono-fibers 21 of the third type. Mono-fibers 23 of the first type have a greater thickness than a thickness of mono-fibers 22 of the second type, and a greater thickness than a thickness of mono-fibers 21 of the third type. Mono-fibers 22 of the second type have a smaller thickness than a thickness of mono-fibers 21 of the third type. Mono-fibers 21 of the third type have a greater length than a length of mono-fibers 23 of the first type, and a greater length than a length of mono-fibers 22 of the second type.

EFFECT: invention allows for obtaining a brush having stability of capturing and releasing paint.

17 cl, 8 dwg

Description

TECHNICAL FIELD OF THE INVENTION

The present invention relates to a brush comprising a bristle / monofilament blend of bristle / monofilaments of three different types.

PRIOR ART

Brushes are usually made of bristles, with the bristles forming, respectively, a bristle block or tuft, or a brush head, which can hold the paint therein by adhesion as well as capillary forces. When painting, the head of the brush is pressed against the surface to be painted by the hand of the worker. Thus, the bristles are bent and paint held between the bristles is pushed out of the brush head as it travels along the surface to be painted.

The bristles can be natural or synthetic fibers, and synthetic fibers, namely monofilaments, can be made from a wide variety of thermoplastic polymers, in a wide variety of configurations, including solid and hollow, and a wide variety of cross-sections, including round, oval, triangular, three-chambered, four-chambered, lobular, or may contain many voids. A tremendous amount of work has been done in manufacturing to increase ink grip and ink release in brushes by experimenting with mixtures of different polymers, configurations and cross-sections, in many cases seeking to artificially copy or mimic the properties of natural fibers.

A brush consisting of two types of bristles is known from patent publication EP3023031, wherein the first type bristles are thin and long and the second type bristles are thick and short. The specified known brush is used to obtain a better surface when painting with modern paint, which has a very low content of volatile organic components or even does not contain volatile organic components.

SUMMARY OF THE INVENTION

Accordingly, it is an object of the present invention to overcome the above-mentioned disadvantages of the prior art.

Another goal is to provide an improved monofilament blend for the brush having improved stability, ink grip and ink release.

An additional object of the present invention is to provide a synthetic fiber blend suitable for making brushes and having improved stability, ink pick-up and ink release.

An additional object of the present invention is to provide a blend of synthetic fibers for outdoor dyeing.

Another object of the present invention is to provide a synthetic fiber blend of fibers in which at least one of the fibers contains features that distinguish it from the natural fibers of the prior art, or in which the features of the natural fibers of the prior art are completely absent.

According to the invention, a brush is provided comprising a handle having a bristle holder at one end thereof and a plurality of bristles / monofilaments fixed in the bristle holder, the plurality of bristles / monofilaments comprising bristles / monofilaments of the first type, the second type and the third type, wherein the bristles / monofilaments of the first type are thicker than the thickness of the bristles / monofilaments of the second type and thicker than the thickness of the bristles / monofilaments of the third type, and the bristles / monofilaments of the third type are longer than the length of the bristles / monofilaments of the first type and longer than the length of the second type of bristles / monofilaments.

Thus, said brush comprises three different types of bristles or monofilaments having different sizes, the sizes being at least two different lengths and at least two different thicknesses of the bristles or monofilaments.

In one aspect of the invention, the second type bristles / monofilaments have a thickness equal to or greater than that of the third type bristles / monofilaments.

In another aspect of the invention, the second type bristles / monofilaments are thinner than the third type bristles / monofilaments. Thus, increased ink grip can be obtained compared to a brush in which the second type bristles / monofilaments have a thickness equal to or greater than the third type bristles / monofilaments.

In yet another aspect of the invention, the second type bristles / monofilaments have a thickness less than the third type bristles / monofilaments. Thus, increased wear resistance can be obtained as compared to a brush in which the second type bristles / monofilaments have a thickness equal to or greater than that of the third type bristles / monofilaments.

In yet another aspect of the invention, the second type bristles / monofilaments have a thickness less than the third type bristles / monofilaments. Thus, increased flexibility / optimized rigidity of the bristle / monofilament blend can be obtained as compared to a brush having second type bristles / monofilaments with a thickness equal to or greater than that of the third type bristles / monofilaments.

In the context of the present invention, the term "monofilament" refers to an elongated flexible member having a first end and a second end, that is, a bristle. The first end is part of the root section in which the bristle or monofilament is contained and / or secured in a bristle holder. The other end of the bristle or monofilament forms a free tip that normally contacts the surface to be painted with a brush. The second end is part of the apex section of a monofilament or bristle.

By “thickness” in this application is meant the average diameter of the bristle or monofilament, the major axis of the oval bristle / monofilament, or the overall maximum cross-sectional dimension of the bristle / monofilament. In the case of tapered bristles / monofilaments, the term “thickness” refers to the thickness of the root section of the bristles / monofilaments.

Monofilaments can be made from a wide variety of thermoplastic polymers such as polyamides, polyesters and / or polyolefins.

The plurality of monofilaments are secured or contained in a bristle carrier such that substantially all adjacent bristles or monofilaments are in contact with each other. The monofilaments form a block, tuft or bristle head, respectively. The block is a continuum in which essentially all of the monofilaments are in contact.

These three types of monofilaments can be distributed approximately evenly in the block, tuft or bristle head.

Thus, an improved monofilament / brush bristle blend is provided having improved stability, ink grip and ink release while providing a smooth, dense topcoat / layer and evenly distributed coverage of the surface to be painted.

In an aspect of the invention, the thickness of the first type monofilament is at least 1.75 times the thickness of the second and / or third type monofilaments.

In an aspect of the invention, one or more of the first, second and / or third type monofilaments is hollow. In an aspect of the invention, one or more of the first, second and / or third type monofilaments has a structured outer surface. In an aspect of the invention, one or more of the first, second and / or third type monofilaments are pinched.

Hollow monofilaments may comprise one or more longitudinal cavities extending at least in part from the second end of the monofilament towards the first end of the monofilament, that is, the monofilament is internally hollow. One or more longitudinal cavities can extend along part of the length of the monofilament or along the entire length of the monofilament.

Hollow monofilaments have the advantage of improved ink grip.

In addition, hollow monofilaments can be thicker without significantly increasing the weight and material cost of the monofilament.

Another advantage of a monofilament blend containing thick monofilaments is increased wear resistance due to both the greater amount of material due to the larger volume / surface area of the thicker monofilament compared to thinner monofilaments, and due to the greater stiffness of the thicker monofilament. This is especially advantageous when painting, for example, non-planed boards and non-planar lumber. Another advantage of a monofilament blend containing thick monofilaments is that the monofilaments contribute to the overall stability of the brush bristle, which “tangle” because the other monofilaments in the blend may be softer.

The structured surface can contain many voids or other suitable uneven structures and / or monofilaments. The structured surface can be, for example, grooved.

The advantage of a structured surface is improved paint grip.

A pinching can be applied to the end section of the monofilaments, whereby the end section is split into a plurality of thinner end sections.

The advantage of pinched monofilaments is the improved finish of the painted surface.

In an aspect of the invention, the monofilaments of the first and / or second and / or third type are made of polyester. The monofilament of the first type can be made from polyester and / or the monofilament of the second type can be made from polyester and / or the monofilament of the third type can be made from polyester. The advantage of using polyester is its low cost compared to other materials used, such as nylon.

All three types of monofilament can be made from the same material such as polyester. In this case, the mixture of monofilaments has homogeneous physicochemical characteristics with respect to paint or solvent.

In an aspect of the invention, the monofilaments of the first and / or second and / or third type are tapered.

The tapered and / or pinched monofilament can be provided by mechanical or chemical treatment of the tip. The machining of the tip can be achieved by passing the monofilament over a rotating grinding stone. Chemical treatment of the tip can be achieved by immersing the end portion of the monofilament bundle or bristle unit in a treatment solution such as alkali.

"End treatment" thus means any treatment or finishing suitable for application to the end section of the monofilament, such as tapering and pinching.

In an aspect of the invention, at least one or more of the second or third type of monofilaments are solid.

In an aspect of the invention, said plurality of monofilaments comprise 15-30% of the first type of monofilaments, 15-40% of the second type of monofilaments, and 35-65% of the third type of monofilaments of the total number of monofilaments.

In an aspect of the invention, said plurality of monofilaments contains 22-28% of the first type of monofilaments, 32-38% of the second type of monofilaments, and 37-43% of the third type of monofilaments of the total number of monofilaments.

Alternatively, said plurality of monofilaments contains about 20-25% of the first type of monofilaments, about 20-35% of the second type of monofilaments, and about 40-60% of the third type of monofilaments of the total number of monofilaments.

In another alternative embodiment, said plurality of monofilaments comprises about 25% of the first type of monofilaments, about 35% of the second type of monofilaments, and about 40% of the third type of monofilaments of the total number of monofilaments.

Monofilaments of the first and second types can constitute the main monofilaments of the brush. In this case, the monofilament of the first type has a greater thickness and can have a higher stiffness than the monofilaments of the second and third types for stability and strength, that is, for lateral support of the monofilaments of the second and third types, keeping them in an exclusively vertical position and improving the release of paint brush ... Monofilaments of the second type can be a functional monofilament for picking up ink and releasing ink, for example, provided by having a structured surface. Monofilaments of the third type can fill the empty space between the main monofilaments and be longer and thinner for a smooth final paint finish.

In an aspect, the thickness of the monofilaments of the first type is equal to or greater than 0.3 mm. In an aspect of the invention, the thickness of the monofilaments of the first type is 0.3-0.4 mm. This is an aspect of the invention that is separated from the idea of trying to mimic natural fibers, which is common in the industry. The thickness indicated is greater than that of conventional natural fibers. The use of monofilaments greater than 0.3 mm provides many new features in the monofilament blend in addition to those listed below, for example, increased durability without compromising flexibility / stiffness, which increases ink uptake and release, and improves surface smoothness and hiding power.

In an aspect of the invention, the thickness of the second type of monofilament is 0.15-0.3 mm. In an aspect of the invention, the thickness of the third type of monofilament is 0.15-0.3 mm.

To ensure the stability of a plurality of monofilaments, the monofilaments of the first type can be at least the thickest and optionally the shortest monofilaments of the three types of monofilaments.

In an aspect of the invention, the length of the first type of monofilaments is 55-70 mm, the length of the second type of monofilaments is 60-70 mm, and the length of the third type of monofilaments is 65-80 mm.

To provide a smooth final dyeing surface, the third type of monofilament can be at least the longest and optionally the thinnest of the three types of monofilaments.

Alternatively, the second type of monofilament may be the thinnest of the three types of monofilament.

In an aspect of the invention, said plurality of monofilaments comprise three types of monofilaments, three different lengths.

In an aspect of the invention, the plurality of monofilaments comprise three types of monofilaments having three different thicknesses.

The plurality of monofilaments may comprise three types of monofilaments having three different lengths and three different thicknesses.

The advantages of the invention depend on the varying dimensions, for example, the length and thickness of the three different bristles or monofilaments, and the particular mixture thereof to provide a synergistic effect, as explained above and below. Thus, this creates a dyeing surface area or brush volume containing an overhang of increasing length fibers blended with shorter monofilaments and a support zone of decreasing length fibers blended with longer monofilaments. The support area of shorter fibers surrounds the protruding area of the longer monofilaments, and vice versa, provides lateral support. The mixture of monofilaments is, in some aspects, also blended / blended, so that sub-zones are created in which are evenly distributed in small areas throughout the bristle head of a group of three different monofilaments.

Said fiber blend according to the invention also achieves an optimized combination of softness and stiffness along the entire length of the fiber bundle with a softer "top" section or free end section in contact with the surface to be dyed and a harder "bottom" section or end section attached to the handle. ... Thus, a softer, more flexible “top” creates unexpectedly good coverage and smoothness when supported from “bottom” and upward along the length of each fiber, while a “stiffer” or less flexible “bottom” section creates unexpectedly good and even “vacuum” the effect of paint on each stroke of paint without excessive harshness making the stroke too heavy or stressful for the worker.

One advantage of the aforementioned synthetic monofilament mixture of the invention is that the degree of compaction or density of the various monofilaments when mixed together during collection / aggregation is higher, which imparts a higher density to the monofilament mixture and bundle by allowing more monofilaments to be collected together per unit area. compared to the prior art, as thinner monofilaments fill the “void” space between thicker monofilaments. Thus, the greater the number of monofilaments per unit area, the greater the ink pick-up. Surprisingly, this mixture of monofilaments, having monofilaments of three different thicknesses, makes it possible to have more soft thinner fibers, since the thickest fibers are made thicker than hitherto known in the art, achieving an optimal fiber blend providing an unanticipated synergistic effect like explained above.

Another advantage is that the second type of monofilament can be selected from synthetic standard monofilaments, i.e. commonly used monofilaments available on the market, which implies a lower cost for the aforementioned mixture of synthetic monofilaments according to the invention and reduces the risk that such monofilaments will not be available or they will be delivered too late.

BRIEF DESCRIPTION OF DRAWINGS

The invention will be explained in more detail with reference to drawings representing aspects thereof.

FIG. 1a-c shows a brush having monofilaments of three different lengths and two or three different thicknesses according to the invention.

FIG. 2a-c shows a brush having monofilaments of two different lengths and two or three different thicknesses according to the invention.

FIG. 3a-b shows a brush having monofilaments of three and two different lengths, respectively, the second type of monofilament being thinner than the third type of the invention.

DETAILED DESCRIPTION

The present invention relates to a brush 1 containing a plurality of monofilaments, that is, a bundle or mixture of monofilaments containing three types of monofilaments 21, 22, 23 of different sizes.

FIG. 1a-3b represent the brush 1 according to the invention. FIG. 1a and 2a illustrate a brush 1 according to the invention, wherein the brush 1 comprises a handle 10, a bristle holder 20 and a plurality of bristles or monofilaments 21, 22, 23. The plurality of monofilaments 21, 22, 23 form a bristle block / tuft or brush head that is attached to the handle 10 and / or the bristle holder 20 by means of the adhesive 30 (shown in FIGS. 1b-c, 2b-c and 3a-b) or any other suitable means of attachment. The bristle holder 20 may be a metal rim. Brush 1 is "T" shaped with a substantially flat or planar configuration. The brush head can be cylindrical, for example symmetrical along / around its longitudinal axis. The handle 10 has its own monofilament / bristle holder 20 or a ferrule attached to one end of the handle 1. Handles 10, ferrules 20, and methods of fixing the brush head in a ferrule are known in the art.

The monofilament mixture contains three different types of monofilaments 21, 22, 23, that is, monofilaments 23 of the first type, monofilaments 22 of the second type and monofilaments 21 of the third type. These three types of monofilaments 21, 22, 23 have different dimensions, the dimensions being at least two different lengths and at least two different thicknesses, preferably three different thicknesses of the monofilaments 21, 22, 23.

FIG. 1a-c and 3a each of the three types of monofilaments 21, 22, 23 can have a different length from the others, that is, the monofilaments have three different lengths. The first type monofilaments 23 are the shortest monofilaments in the monofilament blend, the third type monofilaments 21 are the longest monofilaments in the monofilament blend, and the second type monofilaments 22 have a length between the lengths of the first and third monofilaments 23, 21.

FIG. 2a-c and 3b, the three types of monofilaments 21, 22, 23 can be of two different lengths. Monofilaments 21 of the third type are the longest monofilaments in the mixture of monofilaments, and monofilaments 22, 23 of the second and first types are the same length and are the shortest monofilaments in the mixture of monofilaments, i.e. they are shorter than the monofilaments 21 of the third type.

FIG. 1b, 2b, 3a and 3b, the three types of monofilaments 21, 22, 23 can have three different thicknesses. As shown in FIG. 1b and 2b, the third type monofilaments 21 are the thinnest monofilaments in the monofilament blend, the first type monofilaments 23 are the thickest monofilaments in the monofilament blend, and the second type monofilaments 22 have a thickness between the thicknesses of the first and third monofilaments 23, 21. Alternatively, and as shown in FIG. 3a and 3b, the second type monofilaments 22 are the thinnest monofilaments in the monofilament blend, the first type monofilaments 23 are the thickest monofilaments in the monofilament blend, and the third type monofilaments 21 are between the thicknesses of the first and second monofilaments 23, 22. In particular, the shorter monofilaments or bristles enclose at least partially the longer monofilaments or bristles and thus support laterally and vertically the longer bristles to maintain them upright and give them greater rigidity than when they stand on their own. yourself.

FIG. 1c and 2c, the three types of monofilaments 21, 22, 23 can have two different thicknesses. Monofilaments 21.22 of the third and second type have the same thickness and are the thinnest monofilaments in the mixture of monofilaments, and monofilaments of the first type are the thickest monofilaments in the mixture of monofilaments, i.e. they are thicker than the monofilaments 21, 22 of the third and second types.

The present invention provides a blend of monofilaments 21, 22, 23 for brush 1, so that brush 1 contains a bundle / dye head that optimizes the number of monofilaments and the type of monofilament in contact with the surface to be dyed. This optimizes the effective painting surface area of the brush by optimizing the number of softer monofilaments 21, 22 in contact with the surface during painting. This is done by shorter, thicker monofilaments 23 supporting the longer softer monofilaments 21 as they deform and / or bend so that more softer monofilaments are left in engagement with the surface during dyeing compared to prior art bristle heads. The softer monofilaments 21, 22 of the third and second types are made by being thinner and / or longer than the monofilaments 23 of the first type, which are shorter and / or thicker. This ensures better hiding power of the paint during and after painting. This provides a smoother surface to the painted element during and after painting. This gives the brush flexibility, but not excessive softness or stiffness for better ergonomics, as it provides more resistance, but no rebound when stained. Moreover, this mixture of three different monofilaments according to the invention means that upon dyeing, the shape or bending of the monofilaments is dynamically changed, and the bundle of monofilaments achieves an unexpected and more optimal softness of the brush.

In other aspects of the invention, the plurality of monofilaments 21, 22, 23 comprise first type monofilaments 23, second type monofilaments 22, and third type monofilaments 21, wherein the first type monofilaments 23 are thicker than the second type monofilaments 22, and the first type monofilaments 23 have greater thickness than the thickness of monofilaments 21 of the third type; monofilaments 22 of the second type are thinner, equal to or greater than the thickness of monofilaments 21 of the third type, and monofilaments 21 of the third type are longer than the length of monofilaments 23 of the first type, and monofilaments 21 of the third type are longer than the length of monofilaments 22 of the second type ... In an aspect, the first type monofilaments 23 are thicker than either of the second type monofilaments 22 or the third type monofilaments 21. In an aspect, the monofilaments 23 of the first type are thicker than either the thickness of the monofilaments 22 of the second type or the thickness of the monofilaments 21 of the third type. In an aspect, the first type monofilaments 23 are thinner than the sum of the thicknesses of the second type monofilaments 22 and the third type monofilaments 21. In an aspect, the first type monofilaments 23 are thinner than the sum of the thicknesses of the second type monofilaments 22 and the third type monofilaments 21, but thicker than either of the second type monofilaments 22 or the third type monofilaments 21. In yet another aspect, the first type monofilaments 23 are thicker than either of the second type monofilaments 22 or the third type monofilaments 21, and also greater than the sum of the thicknesses of the second type monofilaments and the third type monofilaments.

In an aspect, the thickness of the monofilaments 23 of the first type is equal to or greater than 0.3 mm. In an aspect of the invention, the thickness of the monofilaments 23 of the first type is in the range of 0.3-0.4 mm, for example 0.35 mm. In an aspect of the invention, the thickness of the second type of monofilaments 22 ranges from 0.15 to 0.3 mm, for example 0.18 or 0.20 mm. In an aspect of the invention, the thickness of the third type monofilaments 21 is in the range of 0.15-0.3 mm, for example 0.20-0.22 mm. Thicknesses are diameters if the monofilaments have a circular cross-section and / or thicknesses are measured at the free or top end of any monofilament and / or the root end of any monofilament. The root end is closest to the handle and / or attached to the handle 10. In the case of tapered, pinched or otherwise processed bristles / monofilaments at the free or top end, thicknesses are measured at the root section of the bristles / monofilaments.

In an aspect of the invention, the plurality of monofilaments comprises 15-30% monofilaments 23 of the first type, 15-40% monofilaments 22 of the second type, and 35-65% of monofilaments 21 of the third type, based on the total number of monofilaments.

In an aspect of the invention, the plurality of monofilaments contain 22-28%, eg 25%, monofilaments 23 of the first type, 32-38%, eg 35%, monofilaments 22 of the second type, and 37-43%, eg 40%, monofilaments 21 of the third type of the total number of monofilaments.

In an aspect of the invention, the length of the monofilaments 23 of the first type is 55-70 mm, for example, 60 or 64 mm, the length of the monofilaments 22 of the second type is 60-70 mm, for example, 64 mm, and the length of the monofilaments 21 of the third type is 65-80 mm, for example , 70 or 71 mm.

In the drawings and description, exemplary embodiments are disclosed. However, many variations and modifications can be made to these embodiments. Accordingly, although specific terms are used, they are used only in a general and descriptive sense and not for purposes of limitation, the scope of the embodiments is limited by the following formula.

Claims (21)

1. A brush (1) comprising a handle (10) having at one end a bristle holder (20) and a plurality of monofilaments (21, 22, 23) fixed in a bristle holder (20), in this case, the set of monofilaments (21, 22, 23) contains monofilaments (23) of the first type, monofilaments (22) of the second type, and monofilaments (21) of the third type, and monofilaments (23) of the first type are thicker than the thickness of monofilaments (22) of the second type, and thicker than the thickness of monofilaments (21) of the third type, and while the monofilament (22) of the second type has a smaller thickness than the thickness of the monofilament (21) of the third type, while the monofilament (21) of the third type have a greater length than the length of the monofilament (23) of the first type, and a greater length than the length of the monofilament (22) of the second type. 2. A brush according to claim 1, wherein the second type of monofilament (22) has a thickness equal to or greater than that of the third type monofilament (21). 3. A brush according to any one of the preceding claims, wherein the thickness of the first type of monofilament (23) is at least 1.75 times the thickness of the second and / or third type monofilaments (22,21). 4. A brush according to any one of the preceding claims, wherein at least one of the monofilaments (23) of the first, second or third type is hollow. 5. A brush according to any one of the preceding claims, wherein at least one of the monofilaments (22) of the first, second or third type has a structured outer surface. 6. A brush according to any one of the preceding claims, wherein at least one of the first, second or third type of monofilament (21) is pinched. 7. Brush according to any one of the preceding claims, in which the monofilaments (21, 22, 23) of the first and / or second and / or third type are made of polyester. 8. A brush according to any one of the preceding claims, wherein the monofilaments (21, 22, 23) of the first and / or second and / or third type are tapered. 9. A brush according to any one of the preceding claims, wherein at least one or more of the second and / or third type of monofilaments (22, 21) are solid. 10. Brush according to any of the preceding paragraphs, in which the specified set of monofilaments contains 15-30% monofilaments (23) of the first type, 15-40% monofilaments (22) of the second type and 35-65% of monofilaments (21) of the third type of the total monofilaments (21, 22, 23). 11. A brush according to claim 10, in which the specified set of monofilaments contains 22-28% of monofilaments (23) of the first type, 32-38% of monofilaments (22) of the second type and 37-43% of monofilaments (21) of the third type of the total number of monofilaments (21, 22, 23). 12. A brush according to any one of the preceding claims, wherein the thickness of the first type of monofilaments (23) is equal to or greater than 0.3 mm. 13. A brush according to any one of the preceding claims, wherein the thickness of the first type of monofilaments (23) is 0.3-0.4 mm. 14. A brush according to any of the preceding claims, wherein the thickness of the second and / or third type monofilaments (22, 21) is 0.15-0.3 mm. 15. A brush according to any one of the preceding claims, wherein the length of the first type monofilaments (23) is 55-70 mm, the length of the second type monofilaments (22) is 60-70 mm and the length of the third type monofilaments (21) is 65-80 mm. 16. A brush as claimed in any one of the preceding claims, wherein the plurality of monofilaments comprises three types of monofilaments (21, 22, 33) of three different lengths. 17. A brush according to any one of the preceding claims, wherein the plurality of monofilaments comprises three types of monofilaments (21, 22, 33) having three different thicknesses.

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