• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a domestic appliance component (1) for a domestic appliance, wherein said domestic appliance component (1) has a microstructured surface (2) at least in sections. Also, the invention relates to a method for manufacturing a domestic appliance component (1) for a domestic appliance, in which a surface (2) of the domestic appliance component (1) is microstructured at least in sections. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2594179A1
    申请号:ES201530848
    申请日:2015-06-16
    公开日:2016-12-16
    发明作者:María Carmen Artal Lahoz；Marta LAFUENTE ADIEGO；Elena MARTÍNEZ SOLANAS；Ismael PELLEJERO ALCÁZAR；Mª Pilar PINA IRITIA；Javier Sanz Naval
    申请人:BSH Hausgeraete GmbH；BSH Electrodomesticos Espana SA；
    IPC主号:
    专利说明:

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    Likewise, the microstructured surface in contrast, for example, with coatings, does not generally modify the macroscopic properties of the base material (s) from which the household appliance component is made. Thus, the household appliance component according to the invention can be used under the influence of chemically aggressive environments, extreme temperatures, frequent washing, hard water, and the like, without losing the advantageous properties of its surface. Thanks to its durability, there is also no need to verify the antimicrobial function of the household appliance component regularly or frequently. The term "microstructure" includes the concept of the structure of a surface as seen under a microscope with an increase above x25. Thus, the microstructuring within the scope of the present invention means that the surface of the household appliance component is completely modified in at least one or more sections at micrometric scales or below, in order to influence the surface antimicrobial properties. . Microstructures at smaller scales that can be observed with optical microscopes and / or below the micrometer order can be called ultrastructures or nanostructures and are also encompassed by the term microstructures.
    In another advantageous development of the invention, it is envisioned that the microstructuring comprises at least one manufacturing step of the group consisting of photolithography, plasma etching, injection molding, in particular with micro-inserts, photogravure, laser engraving, thermal nanoprinting lithography, hot stamping, ultraviolet nanoprinting lithography, and roll to roll processing. In this way, various components of the domestic appliance can be optimally manufactured.
    In another advantageous development of the invention, it is envisaged that the microstructuring comprises the steps consisting in the partial or total metallization of the surface, and in the photolithography of the metallized surface by means of a predetermined photolithography template to create the microstructures. The use of photolithography makes it possible to quickly and easily determine an optimal pattern with which to microstructure the surface. Once this pattern or microstructure has been determined, conventional injection molding with appropriate micro-inserts in the mold can be used for large-scale production of the microstructured household appliance component.
    The third aspect of the invention refers to a household appliance comprising at least one household appliance component according to the first aspect of the invention and / or at least one household appliance component that is microstructured at least in


    sections by a method according to the second aspect of the invention. Thus, the domestic appliance is equipped with an antimicrobial household appliance component, where the antimicrobial activity is durable, resistant against detergents and other aggressive chemicals, resistant to temperature, simple and economical manufacturing, and does not require other steps or components as coatings, biocidal chemicals or safety checks. Other features and their advantages can be drawn from the description of the first and second aspects of the invention.
    Other features of the invention are drawn from the claims and embodiments. The features and combinations of features mentioned above in the description, as well as the features and combinations of features mentioned below in the embodiments and / or shown alone in the figures are usable not only in the combination indicated in each case, but also in other combinations or individually, without abandoning the scope of the invention. Therefore, it should be understood that those embodiments that are not explicitly shown and exposed in the embodiments, but which can be extracted from the exposed embodiments through combinations of features are also understood and disclosed by the invention. separated. Thus, those embodiments and combinations of features that do not show all the characteristics of an independent claim originally formulated will also be considered disclosed. Next, the embodiments of the invention are shown in more detail in the figures. Here, they show:
    Fig. 1 an image of a scanning electron microscope (SEM) of a
    household appliance component during surface manufacturing
    microstructured;
    Fig. 2 an image of a scanning electron microscope (SEM) of the household appliance component after fabrication of the microstructured surface;
    Fig. 3 a schematic sectional view of the household appliance component with a microstructured surface comprising cylindrical bodies;
    Fig. 4 an image of a scanning electron microscope (SEM) of the component
    of domestic appliance with a microstructured surface according to another form
    of embodiment of the invention;


    Fig. 5 an image of a scanning electron microscope (SEM) of the component
    of domestic appliance with a microstructured surface according to another form
    of embodiment of the invention;
    Fig. 6 an image of a scanning electron microscope (SEM) of the component
    of domestic appliance with a microstructured surface according to another form
    of embodiment of the invention; Y
    Fig. 7 an image of a scanning electron microscope (SEM) of the component
    of domestic appliance with a microstructured surface according to another form
    of realization of the invention.
    In the following embodiments, different methods for manufacturing household appliance components 1 with microstructured surfaces 2 superhydrophobes are discussed as an economic strategy to reduce the risk of biofilm formation in an associated domestic appliance, for example, a dishwasher, a dryer, or a washing machine. The household appliance components 1 shown in Figures 1 to 7 are all made of polypropylene. It is possible to apply different methods and surface modifications to control the resulting antimicrobial properties of the surfaces in order to avoid the adhesion of microorganism cells. Suitable methods for the microstructuring of the surface 2 of the components of domestic appliance 1 are, for example, irradiation with ultraviolet radiation, plasma modifications, printing using lithography techniques, or laser modifications. Other suitable techniques are based on the creation of topographic patterns of surfaces 2 by lithographic engraving or hot stamping to prevent cell adhesion. In Figures 1 and 2, surface structuring on polypropylene is set out to define the optimal parameters in terms of superhydrophobic properties and low biofilm formation. For such purposes, photolithography and plasma etching techniques are used. Once the optimum pattern has been identified, conventional injection molding with appropriate micro-inserts on the mold can be used for large-scale production of the microstructured household appliance components 1. In all figures, the superhydrophobic surfaces 2 of polypropylene are created by microstructures.
    Manufacturing methods that have been used to test different patterns in order to optimally reduce bacterial growth include lithography and reactive ion etching although other methods such as laser or injection molding would also be possible. Next, its steps are briefly described:


    one. A household appliance component 1 is provided, made entirely of polypropylene (PP);
    2. Metallization of surface 2 with aluminum (film thickness 200 nm) to cover the entire irregular surface 2 (the initial roughness Ra of the PP without microstructuring is usually approximately 100 nm);
    3. Photolithography on the aluminum film:
    to. Application of a positive photoprotector (for example, TI 35ES, Microchemicals GmbH) with a thickness of 2.7 µm;
    b. Creation of the template for photolithography: patterns with a depth (a) of 10-55 µm, a width (b) of 5-22 µm, and a spacing (c) between structures of 730 µm;
    C. Wet chemical etching of the aluminum film by means of a suitable corrosive solution (for example, an acid for etching aluminum from Technic Inc or Transene Electronic Chemicals);
    d. Engraving by reactive ions on polypropylene surface 2 [oxygen plasma; 300 W radio frequency; P = 0.19 mbar; Flow 02: 20 sccm (standard cubic centimeters per minute)]; Y
    and. Removal of the thin aluminum film by a suitable corrosive solution.
    Figure 1 shows an image of a scanning electron microscope (SEM) of the household appliance component 1 during the fabrication of the microstructured surface 2 after step 3.d. The already microstructured surface 2 comprises recesses 3, which are arranged as a grid at a distance of about 35 µm, with a width of about 35 µm.
    Figure 2 shows an image of a scanning electron microscope (SEM) of the household appliance component 1 after fabrication of the microstructured surface 2, that is, after step 3.e. Cylindrical bodies 4 can be observed, which are arranged as a grid and have a rectangular geometry.
    Figure 3 shows a schematic sectional view of the household appliance component 1 with a microstructured surface 2 comprising such cylindrical bodies 4. Generally, the depth (a) of the bodies 4 can vary, for example, between 10-55 µm, the width (b) can vary, for example, between 5-22 µm, and the spacing (c) between bodies 4 can vary between 7-30 µm.
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    LIST OF REFERENCE SYMBOLS
    one Household appliance component
    2 Microstructured surface
    3 Emptying
    4 Cylindrical body
    权利要求:
    Claims (1)
    [1]
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    同族专利:
    公开号 | 公开日
    WO2016203329A1|2016-12-22|
    ES2594179B1|2017-09-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102008043168A1|2008-10-24|2010-04-29|Robert Bosch Gmbh|Drying apparatus such as a laundry dryer, a building dryer or a wood dryer, comprises a condenser for condensing water, where the condenser comprises a component with a surface having hydrophilic or hydrophobic characteristics|
    WO2011147757A1|2010-05-24|2011-12-01|Integran Technologies|Articles with super-hydrophobic and/or self-cleaning surfaces and method of making same|
    WO2012087352A2|2010-12-20|2012-06-28|The Regents Of The University Of California|Superhydrophobic and superoleophobic nanosurfaces|
    WO2013060602A2|2011-10-24|2013-05-02|BSH Bosch und Siemens Hausgeräte GmbH|A washing machine having a component|
    US8720047B2|2009-05-08|2014-05-13|Hoowaki, Llc|Method for making microstructured objects|
    DE102011089114A1|2011-12-20|2013-06-20|BSH Bosch und Siemens Hausgeräte GmbH|Component of a household appliance|ES2697919A1|2017-07-28|2019-01-29|Bsh Electrodomesticos Espana Sa|METHOD FOR MANUFACTURING A COMPONENT OF DOMESTIC APPLIANCES, COMPONENTS OF DOMESTIC APPLIANCES, DOMESTIC APPLIANCES, AND LASER MICROSTRUCTURING DEVICE |
    ES2725999A1|2018-03-28|2019-10-01|Bsh Electrodomesticos Espana Sa|THERMOPLASTIC POLYMER BODY WITH A SURFACE STRUCTURE, PROCESS FOR MANUFACTURING, AND DOMESTIC APPLIANCE THAT INCLUDES THERMOPLASTIC POLYMER BODY |
    US20210010183A1|2019-07-09|2021-01-14|Whirlpool Corporation|Nanoparticles reinforced laundry dispenser|
    法律状态:
    2017-09-19| FG2A| Definitive protection|Ref document number: 2594179 Country of ref document: ES Kind code of ref document: B1 Effective date: 20170919 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201530848A|ES2594179B1|2015-06-16|2015-06-16|Home appliance component for a home appliance|ES201530848A| ES2594179B1|2015-06-16|2015-06-16|Home appliance component for a home appliance|
    PCT/IB2016/053123| WO2016203329A1|2015-06-16|2016-05-27|Household appliance component for a household appliance|
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