Apparatus and method for applying additives to substrates and related products
阅读说明:本技术 将添加剂施加于基底和相关产品的装置和方法 (Apparatus and method for applying additives to substrates and related products ) 是由 安德鲁·L.·皮特森 于 2019-02-19 设计创作,主要内容包括:将一种或多种添加剂施加到基底上的装置和方法。基底可以是织物、纤维或纱线,但不限于此。所述装置包括多个喷雾器的阵列,当基底移动或处于静止位置时,所述多个喷雾器布置在基底附近。喷雾器布置成将一种或多种添加剂和添加剂输送介质的混合物输送至基底,所述喷雾器足以将至少一种或多种添加剂的至少一部分结合至基底中或将一种或多种添加剂粘附至基底的表面。所述添加剂输送介质可以是空气。所述喷雾器包括喷嘴,所述喷嘴配置成产生喷雾图案,所述喷雾图案能够基本均匀和基本完全覆盖。所述装置任选地包括加热器以加热基底,以改善一种或多种添加剂在基底上和基底内的粘附性。(Apparatus and method for applying one or more additives to a substrate. The substrate may be a fabric, fiber, or yarn, but is not limited thereto. The apparatus includes an array of a plurality of sprayers disposed proximate to the substrate when the substrate is moving or in a stationary position. A sprayer is arranged to deliver a mixture of the one or more additives and the additive delivery medium to the substrate, the sprayer being sufficient to incorporate at least a portion of the at least one or more additives into the substrate or adhere the one or more additives to a surface of the substrate. The additive delivery medium may be air. The sprayer includes a nozzle configured to produce a spray pattern that is capable of substantially uniform and substantially complete coverage. The apparatus optionally includes a heater to heat the substrate to improve adhesion of the one or more additives on and within the substrate.)
1. An apparatus for binding one or more additives into or onto a fabric or yarn, the apparatus comprising:
one or more manifolds connected to a source of additive delivery medium;
a plurality of sprayers movably secured to the one or more manifolds, wherein each of the plurality of sprayers is connected to a source of one or more additives to be applied to the fabric or yarn, wherein each sprayer comprises a sprayer nozzle configured to direct a mixture of the one or more additives and an additive delivery medium onto the fabric or yarn sufficient to embed or adhere at least a portion of the one or more additives therein, and wherein the device is configured to deliver the one or more nanoparticles with a minimum clogging amount; and
an additive delivery controller connected to the plurality of sprayers and configured to regulate delivery of the mixture to the fabric or yarn.
2. The apparatus of claim 1, wherein a plurality of sprayers on each of one or more manifolds are arranged to deliver the mixture to a fabric or yarn in the form of a uniform dispersion.
3. The apparatus of claim 1, wherein the apparatus is arranged to deliver the mixture to the fabric or yarn while the fabric or yarn is stationary or in motion.
4. The device of claim 1, wherein the additive delivery medium is air.
5. The device of claim 1, wherein the one or more additives are selected from one or more gases, one or more liquids, one or more particles, or any combination thereof.
6. The device of claim 5, wherein the one or more additives comprise nanoparticles of diamond, gold, silver, jade, copper, zinc, or any combination thereof.
7. The device of claim 1, further comprising a heater arranged to heat the fabric or yarn to control the thermodynamic properties of the material so that they provide for enhanced particle adhesion.
8. The apparatus of claim 1, wherein each nebulizer comprises a delivery medium inlet port, an additive inlet port, and a mixing chamber arranged to mix the additive delivery medium and one or more additives therein.
9. The device of claim 1, wherein the additive delivery controller is connected to a pump device arranged to regulate the flow of one or more additives to the sprayer.
10. The device of claim 1, wherein the device is configured to deliver one or more nanoparticles with a minimal amount of clogging of the nanoparticles.
11. The device of claim 10, wherein one or more components of the device are made, in whole or in part, of a low surface tension material.
12. The device of claim 11, wherein the low surface tension material is selected from the group consisting of nylon and polytetrafluoroethylene.
13. A method of treating a fabric or yarn to alter one or more characteristics of the fabric, the method comprising the steps of:
delivering the fabric or yarn to an additive application device comprising a plurality of sprayers, wherein each of the plurality of sprayers is connected to a source of one or more additives to be applied to the fabric or yarn, and wherein each sprayer comprises a nozzle arranged to direct a mixture of one or more additives and an additive delivery medium onto the fabric or yarn sufficient to embed or adhere at least a portion of the one or more additives into the fabric or yarn; and
the mixture is sprayed onto the fabric or yarn at a selected rate and in a selected manner.
14. The method of claim 13, wherein the selected rate of spraying the mixture is selected from continuous, periodic or dispersed.
15. The method of claim 13, further comprising the step of heating the fabric or yarn prior to delivering the fabric or yarn to the additive application device.
16. The method of claim 13, wherein the fabric or yarn is held in a stationary position during the spraying step.
17. The method of claim 13, wherein during the spraying step, the fabric or yarn is continuously moved through the plurality of sprayers.
18. The method of claim 13, wherein one or more components of the device are made, in whole or in part, of a low surface tension material.
19. A product made by the method of claim 13.
20. A method of applying one or more additives to a fabric or yarn comprising the steps of: heating the fabric or yarn until its fibers are exposed to sufficient heat to begin controlling the physical properties of the thermoplastic, thereby bonding at least a portion of the one or more additives to the material.
21. A method of treating a substrate with one or more additives, wherein at least one of the one or more additives is a nanoparticle material, the method comprising the steps of:
spraying one or more additives onto a surface of a substrate using an additive application apparatus comprising a plurality of sprayers, wherein each of the plurality of sprayers is associated with a source of the one or more additives to be applied to the surface, and wherein each sprayer comprises a nozzle arranged to direct a mixture of the one or more additives and an additive delivery medium to the surface, wherein the one or more additives comprise at least one nanoparticle material; and
the speed and manner of spraying the mixture onto the surface is adjusted.
22. The method of claim 21, wherein the selected rate of spraying the mixture is selected from continuous, periodic or dispersed.
23. The method of claim 21, wherein one or more components of the device are made, in whole or in part, of a low surface tension material.
24. The method of claim 21, wherein the one or more additives comprise nanoparticles of diamond, gold, silver, jade, copper, zinc, or any combination thereof.
25. A method of treating a fiber with one or more additives to enhance one or more properties of the fiber, the method comprising the step of contacting the fiber with the one or more additives.
26. A method of treating a fiber with one or more additives to enhance one or more properties thereof, the method comprising the steps of:
mixing a polymeric material used to make the fibers with one or more additives; and
the polymeric material is formed into a fiber.
27. The method of claim 25 or 26, wherein the one or more additives comprise nanoparticles of diamond, gold, silver, jade, copper, zinc, or any combination thereof.
28. The device of claim 1, wherein the device is housed in a mobile container.
29. A fibrous product made by the method of claim 25.
30. An improved substrate made by the method of claim 21.
Technical Field
The present invention relates to improving the characteristics of fabrics and other substrates that may or may not be related to fabrics. More particularly, the present invention relates to the efficient and cost effective application of additives to substrates including, but not limited to, fabrics, down, wadding, leather, synthetic fibers and yarns, which are generally referred to herein as materials. The present invention is an apparatus and method for impregnating the surface and interior of a substrate with an additive by spraying or otherwise applying the additive directly onto the substrate.
Background
The mentioned fabrics and suitable substrates are widely used worldwide for the manufacture of finished products such as clothing, bedding and towels, to name but three. Product manufacturers attempt to establish many desirable characteristics in their products. These characteristics vary widely and may include, but are not limited to, hand feel, temperature control, humidity control, and microbial control. Manufacturers also attempt to maintain product integrity and desirable characteristics through multiple cleanings and uses. Therefore, it is important to effectively treat the material to impart the desired properties thereto. It is also important to be able to do this in an economically efficient manner.
At present, the additives are applied to the material in most cases by conventional spraying, coating or foaming under moist conditions, for example in a bath. The application of liquid additives is currently accomplished expensive in terms of the amount of additive material used, the amount of liquid used to deliver the additive, and the energy required to dry the material after immersion of the liquid. In addition, additive delivery media in the form of solvents and viscosifying chemicals are increasingly undesirable components of the process that may remain in the material and/or be exposed to downstream effluents. However, the desired material properties currently obtained by applying liquid additives outweigh the negative effects. In addition, existing methods of treating materials by applying additives thereto include simply coating the materials rather than applying the additives in a manner that they are incorporated or embedded into the materials, and therefore, the additives applied by current methods do not improve the properties of the materials as much as possible while enhancing those properties.
The limitations of the described additive introduction materials also limit the amount, form and type of additives required that can be used in the fabric to improve its properties. Some additives may not be suitable for dispersion in a liquid and/or for uniform incorporation into a material. Multiple additives may not be mixed in a single liquid mixture and thus multiple applications may be required. These limitations and others reduce the options for manufacturers to improve materials in a desirable but cost effective manner. Accordingly, there is a need for an apparatus and method for effectively applying one or more additives to a material by adhering and/or embedding the one or more additives onto and/or into the material. Further, there is a need for an apparatus and method for applying additives in an economically efficient process. In addition, there is a need for an apparatus and method for applying one or more additives to other types of substrates and material compositions, particularly, but not limited to, nanoparticle additives. Relatedly, the present invention forms new products comprising such additives.
Disclosure of Invention
It is an object of the present invention to provide an apparatus and method for efficiently applying one or more additives to a substrate, such as, but not limited to, a fabric. It is another object of the present invention to provide an apparatus and method for improved additive application in an economically efficient process.
These and other objects are achieved using the present invention, which is an additive application device that may be a stand-alone device or may form part of a more comprehensive system, such as a fabric or padding production and treatment device. The additive application device comprises a plurality of sprayers arranged in an array to disperse the atomized additive (which may be multiple additives) substantially uniformly over the material, thereby retaining at least a portion of the one or more additives therein, or at least adhering to the surface of the material. The focus of the present description relates to the use of one or more additives on fabrics and/or fabric components; however, it is not limited to this substrate. For example and without limitation, it is to be understood that the present invention may be used to adhere and/or embed one or more additives on the surface and/or within fibers, yarns, down, wadding, leather and other synthetic or natural materials. The material may be fixed or may move during the additive application process. The number and arrangement of the sprayers in the array is optional. The sprayer includes a nozzle selectively positionable relative to the material to ensure substantial uniformity of additive dispersion and substantially complete contact with the material. The device includes one or more manifolds connected to the sprayer. The manifold supplies an additive delivery medium, which may be air, to the sprayer. The one or more additives are supplied to the sprayer by a delivery medium and delivered through a nozzle. The nozzles are configured to produce a dispersed pattern of the mixture, for example in a conical arrangement. The transport medium is configured to disperse the one or more additives onto the material with a minimum liquid capacity (inclusion). As a result, the material is treated with additives that minimize liquid and reduce drying requirements.
The apparatus optionally includes a heater for heating the material to a degree sufficient to control its physical properties. The material substrate, particularly, but not limited to, synthetic fibers, have a thermoplastic structure that changes its physical properties during thermal handling and exposure to heat. The process of heating the material to enhance the adhesion of the additive is not limited to the use of the additive application device described herein. That is, the heating mechanism may be used separately from the additive device, so long as the one or more additives, or at least a portion thereof, are embedded or adhered to the substrate, the one or more additives may be directed directly to the material in another manner. Heating of the substrate may also be accomplished in other ways and is not limited to a heater placed adjacent to the substrate. For example, when the composite material is thermally cured, but not limited thereto, the substrate may become hot due to the manufacturing process thereof.
The additive application device of the present invention can be used to improve the properties of materials and any resulting products made using such materials. Previous methods for adding additives to materials have generally involved immersing the material in water or another solvent containing such additives, or simply coating the surface of the material with a treatment agent. In another aspect, the present invention enables the introduction of additives in a near dry form, as opposed to an impregnation process, while at the same time enabling at least a portion of the additives to be incorporated into or onto the surface of the material. Less energy is required to accomplish drying, less water is used (with corresponding waste removal obligations), and the material is of better quality with less residual moisture. The method of the present invention includes generating an additive formulation, an additive delivery medium, and directing a dispersion of the mixture to the material to be treated. The dispersed additive formulation uses an effective amount of water to cause the additive to adhere to the material or become embedded within the surface of the material. The additive formulation is directed onto the material in a pattern and at a rate selected to provide sufficient velocity, power and pressure to provide substantially uniform dispersion across the material, thereby ensuring overall and maximum efficiency of use of the additive. The use of a relatively dry delivery medium reduces the time and energy required to dry the material to completion after the additive is applied.
As noted, the device of the present invention may also be used to apply one or more additives to surfaces, such as walls, carpets, chairs, computer keyboards, and any other application where it is desirable to treat such surfaces with nanoparticle additives. For such additives, the means for delivering the formulation of the additive and additive delivery medium includes components in contact with the additive that are made or treated from a low surface tension material. When those interior surfaces are relatively rough, the nanoparticles tend to adhere to the interior surfaces of components such as pump walls, tubes, valves, and sprayer nozzles. The surface of the component of the device of the invention that is designed to contact the nanoparticle additive is coated with or made of a low surface tension material. This includes non-metallic materials such as nylon and polytetrafluoroethylene.
These and other advantages of the present invention will become more apparent upon reading the following detailed description, the accompanying drawings and the appended claims.
Drawings
Fig. 1 is a front perspective view of an example of a fabric treatment device including an additive application device of the present invention.
Fig. 2 is a rear perspective view of the device of fig. 1.
Fig. 3 is a front view of the device of fig. 1.
Fig. 4 is a side view of the device of fig. 1.
FIG. 5 is a side view of the additive application device of the present invention showing a portion of a fabric disposed therein for treatment and including an optional fabric heating element.
FIG. 6 is a perspective view of one embodiment of a sprayer array of the additive application device.
Fig. 7 is a side view of the sprayer manifold without the additive application device of the sprayer nozzle.
Fig. 8 is an end view of the sprayer manifold and its two end caps.
Fig. 9 is an exemplary representation of an additive delivery controller in an additive application device for transferring additive to an atomizer manifold.
Fig. 10 is a photograph of a fiber of a fabric or yarn having an additive applied thereto using the apparatus and method of the present invention, wherein the additive is embedded or adhered to the fabric or yarn.
Fig. 11 is a simplified representation of the moving viewing angle of the additive application device of the present invention.
Detailed Description
While the following description is directed to embodiments of the invention in which one or more additives are delivered to a material, it should be understood that the invention is not limited thereto. In contrast, the present invention provides an apparatus and method that facilitates the introduction and adhesion of one or more additives to a material after drying and processing with a minimum of need. In addition, the present invention increases the opportunity to enhance the properties of the treated material by more effectively incorporating additives into the voids of the material. In addition, the present invention provides a method for material reinforcement using the device. The steps of the described methods may be performed in a different order without departing from the scope of the invention. The method of the present invention involves applying one or more additives to a substrate of interest, which, due to the incorporation of the one or more additives with the surface and interior of the substrate, allows the additives to effectively bond with the substrate, thereby providing the product web with improved properties.
Fig. 1-4 show a
The
Referring to fig. 1-2 and 4-5, the
As shown in fig. 5, the
It has been observed that at least some of the additives bond better with the fibers of the fabric 30 when those fibers have been heated to an extent that the viscosity increases, more specifically, at or above the glass transition temperature. When the one or more additives come into contact with the adhesive fibrous web 30, the additive material remains within the fibers and on the surfaces of the fibers, particularly as the fibers cool as they pass from the
With respect to fig. 6 and other figures, the
The nozzle 44 is selected to maintain integrity and minimize the amount of clogging based on the material selected to pass through. The nozzle 44 includes a conical insert 45, the conical insert 45 being selected and arranged to produce a conical spray pattern on the passing fabric 30. The nozzles 44 are arranged on the manifold 26 and the force of the spray pattern is selected to substantially ensure overlap with the spray of additive material from adjacent nozzles 44. The configuration, selected spray force, and selected additives are designed in combination to increase the likelihood that the additives will be applied completely to the web 30 and uniformly over the entire surface of the web 30.
Each manifold 26 includes a
Referring to fig. 6 and 9, the additive inlet 40 of each
The
The type of additive and the amount of additive used in a single dispersing process can be selected. The additive is preferably in fluid form, such as a gas, a liquid, solid particles, or any combination thereof. Examples of additives that may be deployed on and within fabrics using the present invention include, but are not limited to, antimicrobials, dyes, moisture inhibitors, insulating materials, and fluid transport modifiers. Nanoparticles of the material may be applied to the fabric by the present invention. Examples of suitable nanoparticles include, but are not limited to, diamond, gold, silver, jade, copper, zinc, and combinations thereof. Other types of particles may also be added or substituted. In addition, while nanoparticles are suitable additive materials in the present invention, the additive materials are sized in such a way that they cannot be considered nanoparticles as conventionally understood, and these additive materials are also considered suitable additives in the present invention. Fig. 10 shows a fabric having nanoparticles bonded to its fibers. Such nanoparticles may also be used to treat other types of surfaces, such as walls, floors, chairs, keyboards, etc., using the mixing and delivery components of the
The additive application means 12 is shown in the figures as being part of a more complete and fixed
When the one or more additives include one or more nanoparticles and/or other solid materials, it is preferred that the components of the
The optional step of heating the material to a state where its fibers are tacky increases the adhesion of the additive to the fabric, yarn or surface to be treated and to the interior. The apparatus and method of the present invention improves the uniformity and certainty of the additive in or on the fabric, yarn, and surface while reducing the drying time and overall cost of such work.
Although the heating step has been described herein with respect to specifically altering the physical properties of the material, it should be understood that the invention is not so limited. The invention includes a method of applying the additive to any substrate wherein either or both of the substrate and the additive are heated to a temperature suitable to enhance adhesion of the additive to the substrate. The substrate may be a solid or fluid material. The substrate may also be a component of a product. For example, the additive shown in FIG. 10 adheres to the fibers of the fabric to which it has been applied. However, the additive may be applied to the components of the fabric prior to manufacture into the fabric. The component may be, for example, one or more yarns used in the manufacture of fabrics. The component may be the fibers of one or more yarns used to make the fabric.
In the case of treating individual fibers with an additive, the fluid additive may be directed to the fibers using the
The fibers treated with the additive may be of any shape, including those having a uniform cross-section, those having a non-uniform cross-section, and those having at least partial porosity, such as fibers known as hollow fibers. The fibers having a non-uniform cross-section, such as fibers having a plurality of lobes, including but not limited to X-shaped, Y-shaped, and W-shaped fibers, such as additives suitable for adhesion with or without heat, because their perimeter is larger than that of uniform cross-section fibers, such as round fibers. Moreover, fibers having non-uniform cross-sections are effectively formed with valleys, pockets, and other encapsulated structures that are more likely to retain the desired additives attached to the surface and/or interior of the fibrous structure than fibers having smooth perimeters. However, the additive may be applied to any shape of fiber. Applying one or more desired additives at the fiber level increases the effectiveness of the one or more additives when the fibers form part of the product, because the additives are incorporated throughout the product, rather than on the surface of the product perimeter.
Further, while the
The application of one or more additives having desired characteristics to individual fibers allows the formation of new fiber products having such characteristics. In addition, products made with such fibers, such as yarns and fabrics, are new products with such properties. More generally, the present invention produces all types of enhanced products in which at least a portion of one or more additives are nanoparticles, due to the effective incorporation of those additives on the surface and within these products.
The present invention has been described with respect to apparatus and methods for applying one or more additives to a fabric with respect to specific components and method steps. Nevertheless, it will be understood that various modifications may be made without departing from the spirit and scope of the invention. All equivalents are considered to be within the scope of this description of the invention, as set forth in the following claims.
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