TW201934657A - A synthetic bristle and a paint brush having a plurality of such synthetic bristles - Google Patents

Abstract

The present invention concerns a synthetic bristle (10) for a paint brush, which synthetic bristle (10) is made of at least two different polymers, such as Polybutylene terephthalate (PBT) or Polyethylene terephthalate (PET) or Polytrimethylene terephthalate (PTT) or Polypropylene (PP) or polyamide (PA) or Polyvinylchloride (PVC) and a Thermoplastic elastomer. The invention also concerns a paint brush comprising at least a plurality of such synthetic bristles (10).

Description

Synthetic bristles and paint brushes having a plurality of such synthetic bristles

The invention relates to a synthetic bristle and a paint brush containing a plurality of such bristles.

Paint brushes are usually made from bristles, where the bristles form a bristle bundle or bundle or a brush head, respectively, which can hold the paint in it by adhesive force and capillary force. When applying, the brush head is pressed onto the surface to be applied by the operator's hand. As a result, the bristles are bent and when the brush head is moved along the surface to be painted, the paint held between the bristles is forced to flow out of the brush head.

The bristles can be natural or synthetic filaments, of which synthetic filaments, that is, monofilaments can include solid and hollow configurations and various cross-sections including circular, oval, triangular, triple-chamber, quadruple, and lobed Produced from a variety of thermoplastic polymers or may contain multiple voids. Much work has been done in the industry to improve paint pickup and paint release of paintbrushes by experimenting with blends of monofilaments of different polymers, configurations, and cross sections. In most cases, Copy or mimic the characteristics of natural fibers / filaments and their blends, such as by causing fracture surfaces, bending their free ends, or adding solid particles to the polymer so that pits are formed on the outside of the filament. Examples of such known filaments are disclosed in WO 2007/101 826 and US 6 174 600 B1.

The object of the present invention is therefore to overcome the deficiencies of the prior art, such as those noted above.

Another object is to provide an improved synthetic paint brush bristle that has improved stability while still maintaining compliance and improved paint pickup and paint release.

Another object of the present invention is to provide synthetic bristles which are suitable for manufacturing paint brushes and give the paint brushes supple flexibility and improved stability, paint pick-up and paint release.

Another object of the present invention is to provide an improved paint brush having improved stability and flexibility during painting, while still maintaining suppleness, and improved paint pickup and paint release.

Another object of the present invention is to provide synthetic bristles in which at least one of the filaments includes features that are different from those of the prior art natural filaments or features that the prior art natural filaments even lack.

These objects are achieved by means of synthetic bristles or monofilaments for paintbrushes and paintbrushes equipped with a plurality of such bristles or monofilaments, as claimed in the associated independent items, with preferred variants in relation As defined in the associated subsidiary.

According to a first aspect of the present invention, these objects are achieved by synthetic bristles for a paint brush, the synthetic bristles being made of at least two different polymers, the at least two different polymers being made by at least polymerizing Polybutylene terephthalate (PBT) or Polyethylene terephthalate (PET) or Polybutylene terephthalate (PTT) or Polypropylene (PP) or Polyamide (PA) or Polychloride PBT or PET or PTT or PP or PA or PVC with ethylene (PVC) and thermoplastic polyester elastomer (TPE-E) at about 70-99% (weight percent, wt%) and about 1-30% (weight (%, Wt%) of a mixture of TPE-E ratios, and the synthetic bristles have an at least partially oval cross-sectional shape or an at least partially oval cross-sectional shape, and the thickness in the first dimension is greater than substantially A thickness in a second dimension perpendicular to or perpendicular to the first dimension and thickness.

In one embodiment, the synthetic bristles are made from at least about 75-91% of PBT or PET or PTT or PP or PA or PVC and about 9-25% of TPE-E. In another embodiment, the synthetic bristles are made from at least about 80-90% of PBT or PET or PTT or PP or PA or PVC and about 10-20% of TPE-E. In yet another embodiment, the synthetic bristles are made from more than about 85% PBT or PET or PTT or PP or PA or PVC and less than about 15% TPE-E. In yet another embodiment, the synthetic bristles are made from about 90% PBT or PET or PTT or PP or PA or PVC and about 10% TPE-E.

In one embodiment, the synthetic bristles are configured to have an oval cross-sectional shape.

In another embodiment, the synthetic bristles include at least partially uneven, such as rough or uneven or uneven or irregular or corrugated or knurled or cut or perforated or ripped Or open or worn or knotted or hollow or perforated outer surface. In another embodiment, the synthetic bristles are configured to have an outer surface that is at least partially non-uniform on at least half of its outer surface or no more than half of its outer surface. In yet another embodiment, the synthetic bristles are configured to have an outer surface that is at least partially non-uniform on substantially half of its outer surface or about half of its outer surface or half of its outer surface. In yet another additional embodiment, the at least partially uneven outer surface of the synthetic bristles is provided with at least one or a plurality of dents and / or dimples and / or holes and / or openings.

In yet another embodiment, the first thickness of the synthetic bristles is at least about 1.3 times greater than the second thickness, or between about 1.35 to three times greater than the second thickness, or between about 1.4 to twice the second thickness.

According to a second aspect of the present invention, these objects are achieved by a paint brush including a handle having a bristle carrier at one end and a bristle bundle fastened in the bristle carrier, the bristle bundle comprising at least a plurality of the first states And / or synthetic bristles as in any of the foregoing embodiments.

Any one of the above embodiments may be combined with one or more of the other embodiments, that is, at least one bristles according to the first embodiment and at least one bristles according to any other one or more embodiments, For example at least one synthetic bristle made from at least about 75-91% of PBT or PET or PTT or PP or PA or PVC and about 9-25% of TPE-E, and at least one made of at least about 80 -90% of synthetic bristles made of PBT or PET or PTT or PP or PA or PVC and about 10-20% of TPE-E may have at least one other type of bristles in the bristle bundle, such as by Blend of natural or synthetic fibers made from other polymers. The same applies to the embodiment regarding the shape and size of the bristles, that is, it can be freely combined with any of the other embodiments regarding the bristles made of different material mixtures.

The elliptical cross-sectional shape means an elongated or flat cross-sectional shape such as an oval shape, an elliptical shape, a wide or narrow elliptical shape, a rectangular shape with rounded corners, a cassini elliptical shape, and the like. The elliptical cross-sectional shape has a first axis that is a longitudinal axis and a second axis that is perpendicular to the first or longitudinal axis.

The first or longitudinal axis defines the maximum thickness of the synthetic bristles and / or is consistent with the maximum thickness of the synthetic bristles, and the second axis defines the maximum thickness of the bristles perpendicular to the first axis and / or the thickness of the bristles perpendicular to the first axis Consistent maximum thickness.

The first and / or second axis may each correspond to an axis of symmetry of an elliptical cross-sectional shape.

The purpose of the present invention is to provide synthetic bristles for mixing or blending into the bristle bundles of paint brushes, whereby the bristle bundles can have each and all of the bristle bundles related to each other when mixed / blended and attached together in the bundles. Optimized orientation and positioning of the bristles make the paintbrushes have the best brushing ability with the help of increased paint retention and / or storage capacity, minimizing the need to re-dip the paintbrushes during painting and minimizing the release The time before painting is extended, while the surface is being painted, the paint brush is given to maximize the paint delivery capacity of the paint released to the surface. This increases the effective brushing time for each brush stroke and minimizes the number of times the paint brush must be impregnated with new / more paint. This optimizes the area of the effective brushing surface of the paint brush by optimizing the number of bristles of the present invention that come into contact with the surface during brushing because the bristles of the present invention are flexible or soft compared to the prior art bristles Although each of the bristles of the present invention is larger in one cross-sectional dimension, that is, the first dimension and the first thickness. This is achieved by mixing the slender cross-sectional shape of the bristles of the present invention with other types of bristles that are longer and / or shorter but not equally thick, the bristles blend unexpectedly "Voids" or spaces that produce large and / or more variable shapes between them, after the paint brush is dipped into the paint and when the paint brush is dipped into the paint, the paint is deposited or held or stored in these "voids" Or space, because these "voids" or spaces or gaps, due to the slender or flat or oval cross-section shape of the bristles of the present invention, achieve a lower degree of compression or filling of the bristles blend, thereby enabling paint brushes to The amount of paint "held" during the brushing period and the amount of paint that the paintbrush can release during the same brushing operation have reached a maximum. The combination of the larger size (i.e., the first thickness) in one cross-sectional dimension of the bristles of the present invention with itself is composed of a "blend" of at least two different thermoplastic polymers, namely polybutylene terephthalate (PBT ) Or polyethylene terephthalate (PET) or polypropylene terephthalate (PTT) or polypropylene (PP) or polyamide (PA) or polyvinyl chloride (PVC) and thermoplastic polyester elastomer Made of "blend" mixed with TPE-E, which means that the bristles of the present invention can have a thickness larger than that usually obtained by the prior art bristles, because the bristles of the present invention have the best softness / flexibility. Make the bristles not stiff when bent in a direction that is parallel or substantially parallel to its maximum thickness or a larger first dimension or thickness, that is, a direction parallel to the first axis. This unexpected improvement in the flexibility of a paintbrush, which includes a blend of a plurality of bristles of the present invention and at least one other type of bristles corresponding to a cross-sectional thickness that is less than the first thickness of the bristles of the present invention, makes them unexpectedly supple ( (I.e., not too soft or too hard) to achieve better ergonomics due to its resistance but less rebound during brushing. One type of the mixture of at least two different bristles of the present invention is the bristles of the present invention, the cross-sectional dimension (that is, the first thickness) is greater than the corresponding cross-sectional dimensions or thicknesses of other types of bristles, which means that during brushing, the bristle bundles The dynamically changing shape or curvature of the bristles achieves an unexpected and softer paint brush of the present invention compared to the prior art bristles, while achieving maximum "intake" of the paint when the paint brush is immersed in the paint and during painting Release or discharge of paint from the paintbrush. The bristles have a larger thickness in one direction of the cross-sectional plane without being too hard in the same direction, because the bristles have optimized softness in the same direction.

The paint brush and synthetic bristles according to the present invention achieve long and extended paint coverage during and after brushing. The paint brush and bristles according to the invention complete a large surface to be painted during the application before the paint brush must be immersed in the paint again. The paint brush and bristles of the present invention realize a longer brush stroke before resuming a new brush stroke during brushing. The paint brushes and bristles according to the present invention make it possible to achieve a larger to-be-painted stroke before each new stroke must be restarted and / or the paint must be immersed and immersed in the paint again to "fill" it. Brush the surface. The paint brush and bristles of the present invention realize a large surface to be painted with each brush stroke, and at the same time reduce the brushing force, because the paint brush has optimized flexibility / compliance. The paint brushes and synthetic bristles according to the present invention provide flexible but not too soft or stiff paint brushes for better ergonomics because they provide optimized resistance and rebound during brushing.

In the context of the present invention, under the terms "bristles" or "monofilaments", it is understood that the elongated flexible body has a first end and a second end. The first ends of the bristles or monofilaments form a free tip, which usually contacts the surface to be coated with paint. The first end is part of the top section of the monofilament or bristles. The second end is a root section in which bristles or monofilaments are contained and / or fastened in a bristle carrier. The free ends of the bristles of the present invention are shaped to have straight-cut tips or tapered or tapered to narrow tips or simply have blunt or more or less sharp tips. In the case of tapered or tapered or circular bristles, the "thickness" throughout this application refers to the thickness of the root section of the bristles.

Aspects of the present invention will be described more fully hereinafter with reference to the accompanying drawings. However, the tools and components disclosed herein may be implemented in many different forms and should not be construed as limited to the aspects set forth herein. The same numbers in the drawings always refer to the same elements.

The terminology used herein is for the purpose of describing particular aspects of the invention and is not intended to limit the invention. As used herein, the singular forms “a / an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Exemplary aspects of the present invention are disclosed in the drawings and the description. Many variations and modifications may be made to these aspects without substantially departing from the principles of the invention. Accordingly, the invention is to be considered as illustrative and not restrictive, and not limited to the particular aspects discussed above. Therefore, despite the use of specific terminology, it is used only in a generic and descriptive sense and not for limiting purposes, such as the definition of dimensions (such as width or breadth or height or length or diameter) depending on how the exemplary appearance is depicted Therefore, if depicted differently, the width or diameter shown in one description is the length or thickness in another description.

It should be noted that the word "comprising" does not necessarily exclude the presence of elements or steps other than those listed, and the word "a (an)" preceding an element does not exclude the plural of such elements. presence. It should be further noted that any reference sign does not limit the scope of the patent application. Examples can be implemented at least in part by means of both hardware and software, and several "components", "units" or "Device".

Different aspects of the invention disclosed herein can be combined with other aspects described herein, two aspects can be combined, or more than two aspects can be combined.

The invention shown in Figs. 1 to 6c relates to the paint brush 1 according to the invention and the components constituting the paint brush. The paint brush 1 includes a handle 2, a bristle carrier 20, and a plurality of synthetic bristles or monofilaments, that is, bundles, mixtures, or blends 3 of bristles 10, 11, and 12. The plurality of synthetic bristles or monofilaments include one, two, and three Or more types of bristles, wherein one or more of these types of bristles have one or more sizes that are different or the same as the other bristles.

The synthetic bristles 10 according to at least the first type have an elliptical cross-sectional shape. The elliptical cross-sectional shape means an elongated or flat cross-sectional shape such as an oval shape, an elliptical shape, a wide or narrow elliptical shape, a rectangular shape with rounded corners, a Cassini elliptical shape, and the like. The elliptical cross-sectional shape has a first axis that is a longitudinal axis and a second axis that is perpendicular to the first or longitudinal axis.

The first or longitudinal axis defines the first dimension and / or is consistent with the first dimension, and the thickness W is the maximum thickness of the synthetic bristles 10, and the second axis defines the second dimension and / or is consistent with the second dimension, and the thickness T Is the maximum thickness of the bristles 10 perpendicular to the first axis.

The first and / or second axis may each correspond to an axis of symmetry of an elliptical cross-sectional shape.

The first type of bristles 10 has a thickness in at least one dimension that is greater than the corresponding thickness of any of the other types of bristles 11, 12. At least a first thickness W in a first dimension of the first type of bristles 10 is greater than a second thickness T in a second dimension thereof, where the first thickness W is perpendicular or substantially perpendicular to the second thickness T, see FIGS. 2a-c , Figure 3, Figure 4, Figure 5a-d and Figure 6a-c (Figure 4 shows the enlarged free end 10a of the bristles 10 and Figures 5a-6c show the cross section in four different configurations), This is a kind of elongated molded bristles made of two or exactly two different moldable polymers 10 ', 10 ", preferably two different thermoplastic polymers (see FIGS. 5a-5e). The polymer material constituting the bristles 10 is composed of a first polymer 10 'and a second polymer 10 ". The first polymer 10' is polybutylene terephthalate (PBT) or polyterephthalic acid. Polyethylene terephthalate (PET) or poly (trimethylene terephthalate) (PTT) or polypropylene (PP) or polyamide (PA) or polyvinyl chloride (PVC), the second polymer 10 '' is a thermoplastic polymer Ester Elastomer (TPE-E). One polymer blend is polybutylene terephthalate (PBT) and thermoplastic polyester elastomer (TPE-E). Another polymer blend is polyethylene terephthalate (PET) and thermoplastic polyester elastomer (TPE-E). Yet another polymer blend is poly (trimethylene terephthalate) (PTT) and thermoplastic polyester elastomer (TPE-E).

Referring to FIGS. 1 a and 1 b, the bristle carrier 20 holds a plurality of synthetic bristles 10, 11, and 12. The plurality of bristles 10, 11, 12 form a bristle bundle / bundle 3 or a paint brush head 4 by means of an adhesive 30 (shown in Figs. 2a-c, 3 and 6a-c) or any other suitable fastening means Attached to the handle 2 and / or the bristle carrier 20. The bristle carrier 20 may be a ferrule. The paint brush 1 has a "T" form and has a substantially flat or flat configuration. The paint brush head 4 may have a cylindrical shape, such as a shape formed symmetrically along / around its longitudinal axis. The handle 2 has its bristle carrier or ferrule 20 attached to one end of the handle 2. The paint brush handle 2, the ferrule 20, and the method of fixing the paint brush head 4 in the ferrule to form the paint brush 1 are known in the art.

The synthetic bristles 10, 11, 12 are arranged tangentially to each other along their length as a bundle of bristles 3 and have first free ends 10a, 11a, 12a forming a first bristle bundle end 13, and at the second / root bristle end 10b, 11b, 12b are aligned to the second bundle end 15 of the bristle bundle 3, thereby obtaining a flush or substantially flush bristle end surface or bundle end surface 14. The bristle carrier 20 extends between a first bristle carrier end 21 having a first bristle carrier end surface 22 and a second bristle carrier end 23. The first bristle carrier end surface 22 is aligned with the bundle end surface 14 and the bristle carrier 20 extends along the length of the bristles 10, 11, 12 from the bundle end surface 14 to at least partially surround the second bristle end of the plurality of bristles 10, 11, 12 Or the bristle ends 10b, 11b, 12b, thereby forming a second bundle end 15 for attaching the paint brush head to the paint brush 1.

Generally speaking, the paint brush head 4 has first and second ends, the first or upper end of Figs. 1a-b contains the free ends 10a, 11a, 12a of the bristles 10, 11, 12 and the second or lower end of Figs. 1a-b The base ends 10b, 11b, 12b of the synthetic bristles attached to the bristle carrier 20 are included, wherein the second paint brush head end may have a bristle carrier end surface 22 flush with the second bristle bundle end 15 and its bristle end surface 14. The bristle carrier end surface 22 need not be flush with the bristle root ends 10a, 11a, 12a, the second bristle bundle end 15 and its bristle end surface 14; instead, the cavity or recess 24, that is, due to, for example, along the bristle 10, 11 The distance measured between the bristle end surface 14 and the bristle carrier end surface 22 measured in the length direction of 12 can be formed between the bristle end surface 14 and the bristle carrier end surface 22. The bristles 10, 11, 12 each have free ends 10a, 11a, 12a forming a first bundle end 13 (see the upper part of the paint brush 1 in Figs. 1a-b, 2a-c and Fig. 3, and in more detailed map 4 Free end), the first bundle end 13 mainly contacts the surface to be painted during brushing. The recess 24 in the bristle carrier 20 makes the bristle carrier hollow to provide a receiving cavity for all the bristles 10, 11, 12 so as to surround and seal it at its root ends 10b, 11b, 12b to hold it in place and easily It can be positioned in the recess 24 on the ground and more obviously, and then at least the root ends 10b, 11b, 12b of the bristles are attached therein and at least partially attached to each other, that is, in the middle of the bristle bundle 3 or closer to the middle of the bristle bundle 3 The bristles are only attached to each other, and the other bristles are at least partially attached to each other and attached to the inside of the bristle carrier 20 by means of an adhesive 30 forming a matrix around and between each of the bristles. In some aspects, the sufficient length of the bristle root ends 10b, 11b, 12b is attached to the inside of the bristle carrier 20 and / or other bristles 10, by a combination of an adhesive or an adhesive 30 and a material fused with the material inside the bristle carrier 20, 11,12.

The synthetic bristles 10 in one aspect (see Figure 4 showing its enlarged free end and Figures 5a-6c showing its cross-section in at least four exemplary aspects) are composed of at least two or exactly two different Molded polymers 10 ', 10 ", preferably two elongated molded bristles made of suitable materials of two different thermoplastic polymers (see Figs. 5a-5e). In Figures 5d and 5e, the bristles 10 are composed of two different moldable thermoplastic polymers. The first polymer 10 'is polybutylene terephthalate (PBT) or polyethylene terephthalate. (PET) or polypropylene terephthalate (PTT) or polypropylene (PP) or polyamide (PA) or polyvinyl chloride (PVC) and the second polymer 10 '' is a thermoplastic polyester elastomer ( TPE-E). The bristles 10 in another aspect are slender molded bristles made of a suitable material. The suitable material is at least two different moldable polymers 10 ', 10' ', preferably two different ones. Mixtures of thermoplastic polymers (see Figures 5a-5c). In Figures 5a-5c, the bristles 10 are composed of a solid phase mixture of at least two or exactly two different moldable thermoplastic polymers. The first polymer 10 'is polybutylene terephthalate (PBT ) Or polyethylene terephthalate (PET) or polypropylene terephthalate (PTT) or polypropylene (PP) or polyamide (PA) or polyvinyl chloride (PVC) and a second polymer 10 "is a thermoplastic polyester elastomer (TPE-E). A suitable material for the bristles 10 in Figures 5a-5c is a mixture of two different moldable thermoplastic polymers, the two different moldable thermoplastic polymers being polybutylene terephthalate (PBT) Or polyethylene terephthalate (PET) or polypropylene terephthalate (PTT) or polypropylene (PP) or polyamide (PA) or polyvinyl chloride (PVC) and thermoplastic polyester elastomers (TPE-E), or as shown in Figures 5d and 5e, the bristles 10 are made from two separate entities or half 10 'and 10 "joined together. Here, the first half 10 'is made of polybutylene terephthalate (PBT) or polyethylene terephthalate (PET) or polybutylene terephthalate (PTT) or polypropylene (PP ) Or polyamide (PA) or polyvinyl chloride (PVC), and the second half 10 "is made of thermoplastic polyester elastomer (TPE-E). The half 10 'and 10 "need not necessarily be half, it may alternatively be a quarter or even smaller, such as a sixth or eighth portion. Here, the half 10 ', 10' 'of FIG. 5d and FIG. 5e are joined horizontally together in FIG. 5d and in FIG. 5e in the middle of the bristles 10 by sticking or fusing or by fusing them together longitudinally. Join together vertically. The first thickness W and the second thickness T of the bristles 10 are shown in Figs. 5a-5e, and the positioning of the contacts in the bristles 10 is determined by the third in Fig. 5d corresponding to the same metric or direction as W and T The thickness t and the fourth thickness w in FIG. 5e are defined. These thicknesses t and w are shown to define the orientation and location of the joint between the two separated but joined or integrated entities 10 'and 10 "of the bristles 10. Here, t is greater than zero but less than T and between 25% (T / 4) and 75% T (3T / 4); between 30% and 60% T or between 40% and 55 Between T. The same applies to w, that is, w is greater than zero but less than W and is between 25% (W / 4) and 75% of W (3W / 4); between 30% and 60% of W, Or between 40% and 55% of W. In other aspects, the first thickness W of the synthetic bristles 10 is at least about 30% greater than the second thickness T, or between about 35% and 300% greater than the second thickness T, or about 40% to 200 greater than the second thickness T. %between. When the cross-section of the bristles 10 is oval, the second thickness T corresponds to the first diameter D1 (see the table below) and the first thickness W corresponds to the second diameter D2 (see the table below). In some other aspects, T is between 0.1 mm and 0.25 mm and W is between 0.3 mm and 0.5 mm, or T is between 0.15 mm and 0.23 mm and W is between 0.35 mm and 0.45 mm. Or T is between about 0.2 mm and 0.21 mm and W is between about 0.36 mm and 0.4, or T is between about 0.18 mm and 0.21 mm and W is between about 0.36 mm and 0.39 mm. In another aspect, T is about 0.19 mm to 0.21 mm and W is between about 0.37 mm to 0.388 mm. Alternatively, the previous interval is wider or even narrower.

The configuration, shape and cross-section of the synthetic bristles 10 according to the present invention are shown in detail in FIGS. 4 and 5a-5e. The major cross-sectional dimensions of the outer periphery and cross-section of the bristles 10 in the at least one first thickness W are greater than the at least one second thickness T of the at least one second thickness T measured in a direction perpendicular to the at least one first thickness W of the main cross-sectional dimension Dimensions. The outer periphery of the bristles 10 has a major shape that makes the cross-section of the bristles 10 a substantially elliptical or elliptical shape, a substantially elongated or elongated shape, or any other suitable shape that is larger in a cross-sectional dimension (such as the first thickness W). In cross-sectional dimensions, this shape may be at least partially symmetrical or asymmetrical, but is preferably symmetrical. The cross-section of the bristles 10 has a substantially circular shape or a less circular shape as shown in Figs. 5a-d, such as a substantially square or square shape, a substantially pentagonal or pentagonal shape, a substantially hexagonal or hexagonal shape. Shape, substantially heptagonal shape or heptagonal shape, substantially octagonal shape or octagonal shape, substantially pentagonal shape or pentagonal shape, or a combination of any of these shapes, For example, half of its periphery has a smooth round surface, while the other half of its periphery contains one or more corners or edges (not shown), as long as the bristles 10 are larger in a cross-sectional dimension (such as the first thickness W) Just fine.

Synthetic bristles 10 (Figure 4 shows its enlarged free end 10a and Figures 5a-6c show its cross-section in an exemplary aspect) have a free end with a sharp cut with at least two corners shown in solid lines, or preferably At least one partially circular free end 10a, as shown by two different circular contour lines or outline dashed lines in FIG. 4. Alternatively, the free end may be tapered or tapered or marked in any other suitable shape.

Referring to FIG. 3, a description is given of a state of a paint brush head 4 for a paint brush (shown in FIGS. 1 a-b), which includes a bristle carrier 20 and a plurality of synthetic bristles which are gathered into a bristle bundle 3 and attached to the bristle carrier 20. 10, 11, 12. The first bundle end 13 is aligned with a flush or substantially flush bundle end surface 14 and is then attached to the bristle carrier 20.

The shape of the bristle carrier recessed portion 24 corresponds to the cross-sectional shape of the second bundle end 15 of the bundle 3 of the bristles 10, 11, and 12. The outer shape of the bristle carrier 20 and its inner recess 24 can be shaped in a number of different ways, thereby opening up a large design freedom when designing the paint brush 1.

The bundle 3 of synthetic bristles 10, 11, 12 can be applied in the recess 24 by means of, for example, if the recess is a through hole, at least on the side surface of the recess 24, and if the recess is a bottom hole, the recess is The adhesive 30 on the bottom surface of 24 is attached to the bristle carrier 20. According to one aspect, the bundles 3 of the bristles 10, 11, 12 are attached to the bristle carrier 20 by fusion by applying heat.

The synthetic bristles 10 are made from at least two different polymers, preferably thermoplastic polymers. In one aspect, the synthetic bristles 10 are made by at least polybutylene terephthalate (PBT) or polyethylene terephthalate (PET) or polytrimethylene terephthalate (PTT) or Polypropylene (PP) or polyamine (PA) or polyvinyl chloride (PVC) and thermoplastic polyester elastomer (TPE-E) made of at least two different polymers in a continuous solid phase, preferably a thermoplastic polymer Is, and is at least partially configured to have a cross-sectional shape having a larger or maximum thickness (such as a first thickness W) in one of the cross-sectional planes. In another aspect, the synthetic bristles 10 are made of at least polybutylene terephthalate (PBT) or polyethylene terephthalate (PET) or polybutylene terephthalate (PTT) or poly Made of at least one mixture of propylene (PP) or polyamide (PA) or polyvinyl chloride (PVC) and thermoplastic polyester elastomer (TPE-E), and configured at least partially with one of the cross-sectional planes A cross-sectional shape having a large or maximum thickness (such as a first thickness W) in the direction. In yet another aspect, the synthetic bristles 10 are made of at least polybutylene terephthalate (PBT) or polyethylene terephthalate (PET) or polytrimethylene terephthalate (PTT) or Polypropylene (PP) or polyamide (PA) or polyvinyl chloride (PVC) and thermoplastic polyester elastomer (TPE-E) present a PP (weight percentage, wt%) of about 51-99% and about 1 -49% of a mixture of at least one TPE-E (weight percent, wt%) ratio, and at least partially configured to have a greater or maximum thickness (such as A thickness W) in cross section.

In another aspect, the synthetic bristles 10 are made of only polybutylene terephthalate (PBT) or polyethylene terephthalate (PET) or polybutylene terephthalate (PTT) or poly Propylene (PP) or polyamide (PA) or polyvinyl chloride (PVC) and thermoplastic polyester elastomer (TPE-E) are about 60-99% of PBT or PET or PTT or PP or PA or PVC ( Weight percent, wt%) and a TPE-E (weight percent, wt%) ratio of about 1-40%, and is configured at least in part to have a A large or maximum thickness (such as the first thickness W) of the cross-sectional shape, such that the cross-section of the bristles 10 is elongated and / or oval, so that the bristles cross or are perpendicular to the cross-section plane of the larger or maximum first thickness W The middle direction is more flexible. In an additional aspect, the synthetic bristles 10 are made of only polybutylene terephthalate (PBT) or polyethylene terephthalate (PET) or polybutylene terephthalate (PTT) or poly Propylene (PP) or polyamide (PA) or polyvinyl chloride (PVC) and thermoplastic polyester elastomer (TPE-E) are between about 70-99% of PBT or PET or PTT or PP or PA or PVC ( Weight percent, wt%) and a TPE-E (weight percent, wt%) ratio of about 1-30%, and is at least partially configured to have a cross-sectional shape that is in the cross-sectional plane / Larger or largest first thickness W in one of the dimensions, where the ratio between PBT or PET or PTT or PP or PA or PVC and TPE-E is selected such that even the cross section of the bristles 10 is elongated and / or oval Shaped, when the bristles are bent in any direction, such as in the direction / dimension in the same cross-sectional plane as their larger or maximum first thickness W, or in a cross-sectional plane inclined relative to their larger or maximum first thickness W When it is bent in the direction, or when it is bent in a direction perpendicular to or in the plane of the cross section of its larger or largest first thickness W (that is, parallel to its smaller first When bending in a direction in a section plane of two thicknesses T), or in a direction that dynamically changes or changes in a section plane with respect to its larger or largest first thickness W (such as during painting) Have almost the same or close to or approximately the same or exactly the same stiffness or flexibility (see Figure 3, Figure 4, Figure 5a-Figure 5e and Figure 6a-Figure 6c). The ratio between the first thickness W and the second thickness T may be two times, that is, W is about two times T (W = 2T), or in some aspects, more times. The first thickness W is perpendicular to the smaller second thickness T, that is, W extends in a direction in a cross-sectional plane with respect to T 90 ˚.

In some aspects, the synthetic bristles 10 are made of at least about 70-95% PP or PBT or PET or PTT or PA or PVC and about 5-30% TPE-E; or 75-91% of PBT or PET or PTT or PP or PA or PVC and about 9-25% of TPE-E; or at least about 80-95% of PBT or PET or PTT or Made from PP or PA or PVC and TPE-E between about 5-20%; or from at least about 85-95% PBT or PET or PTT or PP or PA or PVC and between about 5-15% Made of TPE-E. A polymer blend is made from at least about or more than 90% PBT or PET or PTT or PP or PA or PVC and about or less than 10% TPE-E because its softening effect in some aspects is at a higher concentration Down or down. Another polymer blend is made from about 90% PBT or PET or PTT or PP or PA or PVC and about 10% TPE-E because its softening effect in some aspects is subsequently optimized. Regarding the ratio of the mixed polymer materials and the above and below percentages of the materials relative to each other, that is, =% is measured by weight percentage, that is, wt%. The percentages defined in relation to the size and the first thickness W greater than the second thickness T indicate the size / dimensions relative to each other, such as length, width, and depth, and the amount or amount of materials that are not mixed together.

In some aspects, the synthetic bristles 10, in addition to being prepared from any of the thermoplastic polymers 10 ', 10' 'defined above at any associated ratio or shape / configuration, are also configured to have The at least partially substantially elliptical or substantially elliptical or fully elliptical cross-sectional shape shown in Figs. 4 and 5a-5e, that is, the elliptical cross-sectional shape.

In one aspect, the synthetic bristles 10 have at least partially rough or uneven or uneven or uneven or irregular or irregular or corrugated or knurled or cut or perforated or ripped or pierced Or worn or knotted or hollow or perforated surface 16. In one other aspect, the synthetic bristles 10 are configured to have at least partially rough or uneven or uneven or uneven or irregular or corrugated or knurled or cut or Perforated or torn or pierced or worn or knotted or hollow or perforated outer surface 16. In yet another aspect, the synthetic bristles 10 are configured to have at least partially rough or uneven or uneven or uneven or irregular or corrugated or knurled or cut within no more than half of its outer surface. Or perforated or ripped or pierced or frayed or knotted or hollow or perforated outer surface 16. In another aspect, the synthetic bristles 10 are configured to have an at least partially non-uniform outer surface on / inside substantially half of its outer surface or on / approximately / approximately half of its outer surface / inner or on nearly half of its outer surface / inner. Surface 16. According to another aspect, the synthetic bristles 10 have an outer surface 16 having at least a partly uneven surface with at least one or a plurality of dents and / or dimples and / or holes and / or openings 17. The dimples and / or dimples 17 may form a gear shape as shown in Figs. 5b and 5c. If only one dent / dent 17 is provided on the surface of the bristles 10, the dent / dent 17 is larger. If more than one dent / dent or plural dents or dents 17 are present on the outer surface, these dents or dents are smaller than having only one dent or dent. The dents 17 have substantially the same or the same size in one aspect and different sizes in the other aspect. The dents 17 have substantially the same shape or the same shape in one aspect, and have a different shape in another aspect. The dents 17 have substantially the same size and / or shape or the same size or shape in one aspect, and have a different size and / or shape in another aspect. The dent 17 is combined with any one of the above aspects symmetrically arranged on the outer surface of the bristles 10 in one aspect, and is arranged asymmetrically or asymmetrically outside the bristles 10 in another aspect Any combination of the above aspects on the surface. Some or several of the dents 17 are combined in one aspect with any of the above aspects symmetrically arranged on the outer surface of the bristles 10, while some or several of the other dents 17 are asymmetric or asymmetric Ground is arranged on the outer surface of the bristles 10. These dents 17 have the same depth and / or radius in some aspects (when having a circular shape), but in other cases have different depths and / or radii. One or more or some or several dents 17 have the same depth and / or radius (when having a circular shape) in other aspects, and one or more or some or several other dents 17 have different depths and / Or radius.

According to one aspect, the paint brush 1 comprising a handle 2 having a bristle carrier 20 at one end and a bundle of synthetic bristles 3 fastened in the bristle carrier 20 includes at least a plurality of the foregoing such as a polymer material and shape and / or surface configuration And synthetic bristles 10 in any of the following aspects.

The present invention provides a synthetic bristle 10 for a paint brush 1 for mixing or blending with at least one other type of synthetic and / or natural bristles 11, 12 into a bundle 3, so that the bundle 3 is mixed / blended and adhered When together, the paint brush 1 is provided with tufts or paint brush heads 4 that have an optimized number of bristles, a type of bristles, and an orientation and positioning of the bristles relative to each other, whereby the paint brush obtains the best painting ability and paint delivery ability, This optimal brushing ability is attributed to increased paint retention, minimizing the need to re-dip the paint brush when a very small amount of paint is released during the brush stroke at the end of the brush stroke. The maximum amount of paint released on the surface during this period. This increases the brushing time of each brush stroke and minimizes the number of times the paint brush 1 must be impregnated with new / more paint. This optimizes the area of the effective brushing surface of the paint brush by optimizing the number of first type bristles 10 in contact with the surface during brushing. Compared with the prior art bristles, the first type of bristles are More flexible or softer, although each bristle 10 is larger in one cross-sectional dimension or thickness, that is, larger or largest first thickness W. This is achieved by an elongated cross-sectional shape of the first type of bristles 10 mixed with longer and / or shorter but not equally thick types of bristles 11, 12 which is unexpectedly shaped Larger and / or more variable shapes are created between the bristles in which the "voids" or spaces in which the paint is deposited or held or stored after the paint brush 1 is dipped into the paint and when the paint brush 1 is dipped into the paint This is because these "voids" or spaces or gaps due to the slender shape of the first type of bristles 10 achieve a lower degree of compression or filling of the blend of bristles 10, 11, 12 so that the paint brush 1 The amount of paint that can be "held" during the painting period and the amount of paint that the paint brush 1 can release during the same painting period are maximized. The first type of elongated shape of the bristles 10 in combination, with its system consisting of at least two different thermoplastic polymers, namely polybutylene terephthalate (PBT) or polyethylene terephthalate (PET) or poly (trimethylene terephthalate) (PTT) or polypropylene (PP) or polyamide (PA) or polyvinyl chloride (PVC) and the blending of thermoplastic polyester elastomer (TPE-E) It means that the bristles 10 of the first type can have a thickness larger than the thickness usually obtained by the bristles of the prior art. This is because the softness and / or softness of the bristles 10 is optimized, so that the bristles 10 It is not too rigid when bent in the same plane of the cross section as its larger or largest first thickness W. This is a surprising improvement of a paint brush 1 comprising a first type of bristles 10 blended with a plurality of at least one other type of bristles 11, 12 which has less than the softness of the paint brush 1 At least one maximum thickness or corresponding cross-sectional dimension of the first type of bristles 10 makes it unexpectedly compliant for better ergonomics, that is, not too soft or too stiff, because it provides resistance but is less Less rebound. One type is a cross-sectional dimension, that is, a mixture of at least two different bristles of the first type of bristles 10 having a first thickness W greater than the other types of bristles 11 and 12 means that during brushing, one of the bristle bundles 3 The dynamically changing shape or curvature of the bristles 10, 11 and / or 12 achieves an unexpected and softer paintbrush 1 compared to the prior art bristles, while achieving maximum paint uptake when the paintbrush is dipped into the paint And the maximum release or discharge of paint from the paint brush 1 is achieved during the brushing.

This paint brush 1 and its synthetic bristles 10 achieve a long and extended paint coverage during and after the brushing. The paint brush 1 and its bristles 10 achieve a large surface to be painted before the paint brush 1 must be immersed in the paint. This paint brush 1 and its bristles 10 achieve a longer brush stroke during brushing before restarting a new brush stroke. The paint brush 1 and its bristles 10 realize a larger surface to be painted before each brush stroke must be restarted and / or the paint brush 1 is immersed in the paint to "fill it". . The paint brush 1 with bristles 10 achieves a large surface to be painted with each brush stroke, and at the same time reduces the brushing force, because the paint brush is the most flexible and / or smooth. This paintbrush 1 with bristles 10 provides a flexible but not too soft or stiff paintbrush to achieve better ergonomics because it provides optimized resistance and rebound during brushing.

Test results for bundle 3 with a first variant of synthetic bristles 10 made from 100% PBT (without TPE-E) are shown in Tables 1a (synthetic bristle length = 64 mm) and 1b (synthetic bristle length = 71 mm). Test results for the second variant of bristles 10 with 10% TPE-E and 90% PBT and the third variant of bristles 10 with 20% TPE-E and 80% PBT, respectively The pairs are shown in the tables 2a (synthetic bristles length = 64 mm) and 3a (synthetic bristles length = 71 mm) and 2b (synthetic bristles length = 64 mm) and 3b (synthetic bristles length = 71 mm). The above and below percentages of the mixed amount of materials are measured in weight percent (wt%) and not in volume percent.
Table 1a ( Oval gear shape 0.30 X 64 MM BT101 (100% PBT))
Table 1b ( Oval gear shape 0.30 X 71 MM BT101 (100% PBT))
Table 2a ( Oval gear shape 0.30 X 64 mm bristles 101 (90% PBT and 10% TPE-E))
Table 2b ( Oval gear shape 0.30 X 64 mm bristles 101 (80% PBT and 20% TPE-E))
Table 3a ( Oval gear shape 0.30 X 70 mm bristles 101 (90% PBT and 10% TPE-E))
Table 3b ( Oval gear shape 0.30 X 70 mm bristles 101 (80% PBT and 20% TPE-E))

1‧‧‧paint brush

2‧‧‧handle

3‧‧‧bristles

4‧‧‧paint brush head

10‧‧‧ synthetic bristles

10a‧‧‧First free end of synthetic bristles

10b‧‧‧Second / root end of synthetic bristles

10'‧‧‧ moldable polymer material

10``‧‧‧ moldable polymer material

11‧‧‧ synthetic bristles

11a‧‧‧First free end of synthetic bristles

11b‧‧‧Second / root bristle end of synthetic bristles

12‧‧‧ synthetic bristles

12a‧‧‧First free end of synthetic bristles

12b‧‧‧Second / root end of synthetic bristles

13‧‧‧The first bristle bundle end of synthetic bristles

14‧‧‧bristle end surface

15‧‧‧ the second end of the bristle bundle

16‧‧‧ outer surface

17‧‧‧ Dent and / or Dent

20‧‧‧bristle carrier

21‧‧‧ the first bristle carrier end

22‧‧‧ first bristle carrier end surface

23‧‧‧ the second bristle carrier end

24‧‧‧ Recess

30‧‧‧ Adhesive

A-A‧‧‧line

B-B‧‧‧ Arrow

T‧‧‧Maximum thickness of synthetic bristles

t‧‧‧The third thickness of synthetic bristles

W‧‧‧Thickness of synthetic bristles

w‧‧‧ the fourth thickness of synthetic bristles

The invention will now be further explained with reference to the drawings showing aspects of the invention.

Figures 1a-b show a paint brush according to the invention having two or three different lengths or substantially the same length or the same length and two or three different thicknesses of bristles.

Figures 2a-c show, in cross-section, the left part of the paint brush of Figures 1a-b with two or three different lengths and two or three different thickness bristles according to the invention.

FIG. 3 shows a section of a paint brush head in a perspective view along a line AA in FIG. 1 a to FIG. 1 b, the paint brush having two or three or more different types of bristles, two or three different lengths, and The bristles of the first type according to the present invention are thicker in the first dimension than other types of bristles.

Figure 4 shows in more detail the free end of a first type of bristles having three differently shaped tips according to the present invention, one tip being a straight cut with a solid line, the other tip being a circle with a dotted line, and a third tip It is a dotted circle but has a sharper tip or a smaller tip radius.

Figures 5a-e show the first type of bristles according to the present invention in more detail in cross-section. Compared to other types of bristles, the first thickness is greater in one direction in five different configurations.

Figures 6a-c show the bristles inside the carrier / carrier of the bristles of the paint brushes of Figures 1a-b, 2a-c and 3 in a plan view from one end, that is, from a cross-sectional view in the direction of arrow BB in Figure 3, According to the present invention, the bristles are respectively two, three or more different types of bristles mixed in different configurations / patterns.

Claims (12)

A synthetic bristle (10) for a paint brush (1), the synthetic bristles (10) being made of at least two different polymers, the at least two different polymers being made of at least polybutylene terephthalate (PBT) or polyethylene terephthalate (PET) or polypropylene terephthalate (PTT) or polypropylene (PP) or polyamide (PA) or polyvinyl chloride (PVC) and thermoplastic polymer Ester Elastomers (TPE-E) are between about 70% and 99% (wt%, PBT or PET or PTT or PP or PA or PVC) with about 1% to 30% (wt%) A mixture of TPE-E ratios is prepared, and the synthetic bristles (10) have an at least partially substantially elliptical cross-sectional shape with a thickness (W) in a first dimension greater than or substantially perpendicular to the first Dimension and thickness in the second dimension (T). The synthetic bristles (10) of claim 1, wherein the synthetic bristles (10) are composed of at least about 75% to 91% of PBT or PET or PTT or PP or PA or PVC and about 9% to 25% Made of TPE-E. The synthetic bristles (10) of claim 1 or 2, wherein the synthetic bristles (10) are composed of at least about 80% to 90% of PBT or PET or PTT or PP or PA or PVC and about 10% to 20% Made between TPE-E. The synthetic bristles (10) of claim 1 or 2, wherein the synthetic bristles (10) are made of more than about 85% PBT or PET or PTT or PP or PA or PVC and less than about 15% TPE-E. The synthetic bristles (10) of claim 1 or 2, wherein the synthetic bristles (10) are made of about 90% PBT or PET or PTT or PP or PA or PVC and about 10% TPE-E. The synthetic bristles (10) of claim 1 or 2, wherein the synthetic bristles (10) are configured to have an oval cross-sectional shape. Synthetic bristles (10) as claimed in claim 1, wherein the synthetic bristles (10) comprise at least partially uneven, such as rough or uneven or uneven or irregular or corrugated or knurled or cut Or perforated or ripped or pierced or frayed or knotted or hollow or perforated outer surface (16). The synthetic bristles (10) of claim 7, wherein the synthetic bristles (10) are configured to have the at least partially uneven outer surface (16) in at least half of its outer surface or no more than half of its outer surface. The synthetic bristles (10) of claim 8, wherein the synthetic bristles (10) are configured to have the at least partially non-uniform on substantially half of its outer surface or on approximately half of its outer surface or on half of its outer surface. Exterior surface (16). If the synthetic bristles (10) of claim 8 or 9, wherein the at least partially uneven outer surface (16) of the synthetic bristles (10) is provided with at least one or a plurality of dents and / or dimples and / or holes and / Or cut out (17). The synthetic bristles (10) of 2, 7, 8 or 9, wherein the first thickness (W) of the synthetic bristles (10) is at least about 1.3 times greater than the second thickness (T) or greater than the second thickness (T ) Is about 1.35 times to three times, or about 1.4 times to twice the second thickness (T). A paint brush (1) comprising a handle (2) having a bristle carrier (20) at one end and a bristle bundle (3) fastened in the bristle carrier (20), the bristle bundle (3) containing at least a plurality as requested The synthetic bristles (10) of any one of items 1 to 11.