• 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:
    METHOD OF STRUCTURING A FLEXIBLE PREPARED FILTERING RESPIRATOR / FACIAL PIECE AND FLEXIBLE PRECEDING MOLDED FILTERING FACIAL PIECE, comprising a pleated respirator / molded part for the face and including at least one layer of filtering face to provide filtration, flexible moldable plastic formed starting from flexible perforated plastic, to provide a plurality of perforations to allow a free passage of air through the mesh; a layer of moldable filter material for filtering air impurities, a layer of flexible plastic formed from flexible perforated plastic and a filter layer for filtering air impurities positioned on top of one another; the moldable multilayer of flexible plastic material and filter material is applied in pleated material and shaped to fit the pleated respirator / filter facepiece in a desired configuration where a layer of flexible perforated plastic material forms a support layer to support the filter material layer .
    公开号:BR112013005176B1
    申请号:R112013005176-0
    申请日:2011-09-06
    公开日:2021-02-09
    发明作者:Mark Magidson；Crest Turdjian
    申请人:Moldex-Metric, Inc.；
    IPC主号:
    专利说明:

    Description
    [001] The present technology refers to a pleated respirator / face filter and in particular a pleated respirator / face filter formed from a plurality of layers and with the individual layers providing different functions. In the respirator / filter facepiece of the present patent application, at least one layer is formed from a perforated pleated flexible plastic material and serves as a support layer to support at least one other layer of pleated filter material. It will be convenient for the pleats to be close together, or just slightly wavy, in order to increase the surface area of the filter material. In a particular embodiment of the present patent application, a pair of layers of pleated perforated flexible plastic material forms the support for the pleated filter layer, and with the pleated filter material layer sandwiched between the pleated perforated plastic material layers. The pleat of the various layers of the respirator / filtering facepiece allows adjustment of the respirator / filtering facepiece and seals the respirator / filtering facepiece, on the periphery of the mask, to the user's face, while allowing expansion of the mask within its periphery, as movements of the user's face.
    [002] The vast majority of molded respirators / facial filter parts are made from a flat layer or multiple flat layers of Meltblown filter media that include support materials to protect the medium and provide a structure for the user. These structures are quite rigid in nature, meaning that materials cannot be significantly stretched between two fixed points on the respirator.
    [003] The provision of a flexible elastic structure for a filtering respirator / facepiece will be an enhancement over everything that is available in terms of the design of respirators / filtering facepieces. The present invention patent application gives the facepiece a flexibility that was not available until now, as well as other structural advantages that will greatly benefit the user.
    [004] The creation of pleats in filter media is a process that has been widely used for filtering, both for facial parts and for other filters, such as automotive air filters and air conditioning filters. While pleating has been used sparingly in molded filter respirators / facepieces, such structures have been relatively rigid or inelastic in nature. The removal of rigid materials from the pleated filter media, or the formation of materials in order to create flexibility and elasticity, results in a significant step forward, with regard to structural benefits of respirators / filtering facial parts. By encapsulating the medium in an elastic polymeric fabric, the structure gains sufficient elasticity and structure to make the pleated filter media expand and contract easily during facial movements, allowing for improved facial contact and also allowing the respirator potentially serve in a wider range of facial sizes. The resilient polymer screen or screens that support the filtering material have sufficient elasticity to return to their original three-dimensional shapes, when they are not under strain, but flexible enough to adjust to the user's facial movements.
    [005] Additionally, the extra surface area provided by the pleats has the benefit of improving the filtering performance, by increasing the surface area, which is related not only to the ease of breathing, but also allowing the respirator to expand and contract, and serve comfortably on a wider range of faces, than a respirator that does not have such a structure.
    [006] The preferred structure consists of at least one layer of polypropylene Meltblown filter media covered by at least one layer of resilient plastic mesh. A resilient polymer material containing at least about 15% EVA is ideal, with a weight of about 20 grams per square meter, or more, depending on the weight of the desired filter media. When a high level of filtration is required, it is necessary to produce filter media of a heavier weight, using heavier Meltblown media or using multiple layers of lighter media. In the present application for a patent, heavier filter media require heavier plastic screens and vice versa, to provide the necessary balance between flexibility and elasticity.
    [007] The inner layer, which is in contact with the skin, is preferably covered by a non-woven material like Spunbond, which is traditionally inelastic in its stretching properties. However, when pleated together with other materials, Spunbond material retains the resilience and flexibility of the screen-coated filter media.
    [008] Another configuration adapts a non-pleated Spunbond material to the periphery of the molded inner mask structure. However, in this configuration, the Spunbond material or fabric has significant elongation properties that allow it to expand and contract with the rest of the pleated mask, during facial movement. Yet another configuration adapts a soft foam flange in place or welded around the periphery of the respirator or the part of the periphery that is sufficiently stretchable to accommodate the flexibility of the respirator.
    [009] With the respirator / filter facepiece of the present patent application, the use of the perforated pleated plastic material provides a flexible support, yet capable of retaining the shape, for the pleated filter material. In addition, since the pleated plastic material has a mesh-like configuration, which provides a plurality of perforations, the perforated pleated plastic material allows for the passage, generally unrestricted, of a high volume of air. Since the perforated pleated plastic allows a high volume of air to pass through, the respirator / filter facepiece of the present patent application is comfortable to use, as the user's breathing is not unduly restricted.
    [0010] The layer of pleated filter material can be of any generic type of filter material commonly used with respirators / facial filter parts for filtering impurities characteristic of air. The filter material can be formed from several types of filter materials, such as non-woven polyester fiber, electrostatically charged polypropylene, activated carbon or other additives, various types of natural fiber and other currently used filter materials. Many of the filtering materials currently used to provide the filtering part of respirators / facial filtering parts cannot withstand a high degree of heat, as heat can reduce or eliminate the filtering properties of the material. With the present application for a patent, the respirator / filter facepiece can be formed using the method of U.S. Patent 4,850,347, which describes a technique that does not subject the filtering material to a high degree of heat, so that the material filter is not substantially affected.
    [0011] With the respirator / filter facepiece of the present patent application, the pleated filter material can be relatively thick and still be adequately supported by the pleated perforated plastic support layers. In addition, the filter material presently used may not be suitable for retaining the shape or supporting itself, so it is necessary to use some kind of support medium to support the pleated filter material.
    [0012] In the pleated respirator / filter facepiece of the present patent application, the perforated pleated plastic material can be formed from a plastic sheet having a pattern of openings or can be formed from a sheet of material fabric, or it can also be formed from a sheet of knitted material. In particular, the perforated plastic layer can be formed from different plastic materials such as vinyl, polyethylene, synthetic or real rubber, or other materials or combinations of materials. As an example, the perforated plastic layer can be formed from a mixture of ethyl vinyl polypropylene acetate.
    [0013] In a first particular configuration of the present patent application, the pleated respirator / filter facepiece is formed from four layers of material and specifically includes a pair of layers of perforated flexible plastic layers, which serve to support a layer of filtering material between the layers of perforated plastic. A fourth inner layer, made of a soft material, serves as a layer positioned against the face of the mask user. This soft material provides additional comfort to the user of the filter respirator / facepiece. The fourth inner layer can be pleated with other layers or it can be made of a stretchable material, capable of expanding with the expansion of the pleats, as described above. In the simplest configuration of the present patent application, a single sheet of perforated pleated flexible plastic is formed to support and to act as a support for the pleated filter material layer.
    [0014] The present technology therefore considers a pleated respirator / filter facepiece that allows the use of different types of filtering material to obtain the desired degree of filtration, while at the same time allowing a considerable volume of air to be passed to the mask user. The pleated respirator / filter facepiece of the present patent application includes at least a single layer of pleated flexible perforated plastic material to support and support at least one layer of pleated filter material. The pleated respirator / filter facepiece of the present patent application may include an additional layer of pleated perforated plastic material to provide additional support and also an additional layer of soft woven material to provide comfort. The present application for a patent includes various means of sealing the peripheral edge of the respirator / filter facepiece. A clearer understanding of the present invention patent application will be obtained, with reference to the following descriptions and drawings, characterized in that: Figure 1 is a perspective view of a first configuration of a pleated respirator / filter face piece structured according to the teachings of the present invention patent application; Figure 2 is a rear view of the first configuration of the present application; Figure 3 is a side view of the first configuration of the present application; Figure 4 is a lateral cross-sectional view taken along lines 4-4 of Figure 2; Figure 5 is a lateral cross-sectional view similar to Figure 4 of an alternative structure of the pleated respirator / filter facepiece of the present patent application and including an expandable Spunbond inner layer; Figure 6 is a lateral cross-sectional view similar to Figure 4 of an alternative structure of the pleated respirator / filter facepiece of the present patent application with a simpler structure; Figure 7 illustrates a first method for forming the pleated respirator / filter facepiece of the present patent application; Figure 8 illustrates a second method for forming the pleated respirator / filter facepiece of the present patent application; Figure 9 is a perspective view of a second configuration of a pleated respirator / filter facepiece structured in accordance with the teachings of the present patent application; Figure 10 is a rear view of the second configuration of the present application; Figure 11 is a top view of the second configuration of the present application; and Figure 12 illustrates an alternative elastic woven material.
    [0015] Figures 1 to 6 illustrate a first configuration of the pleated respirator / filter facepiece of the present patent application with alternative structures. As shown in Figures 1-3, the pleated respirator has the pleats oriented horizontally with respect to the face of the respirator user. The filter respirator / facepiece, in a frame, includes four layers of material. Specifically, a pair of pleated flexible perforated plastic layers 10 and 12 that press a layer of pleated filter material 14. A layer of a moldable fabric, which can be pleated fabric 16 as shown in Figure 4 or non-pleated elastic fabric 18 as shown in Figure 5, is positioned on the inner surface of the respirator / filter facepiece and provides additional comfort for the user of the respirator / filter facepiece. An elastic strip 20 can be fitted to the side of the respirator and is used to hold the respirator / filter facepiece in position against the user's face.
    [0016] The pleated perforated plastic layers 10 and 12 serve as support layers to support the filter material 14. In particular, the perforated plastic layers can be formed from sheets containing a plurality of openings to allow free passage donate. For example, perforated plastic layers can be formed from perforated plastic material, woven plastic material, mesh plastic material, etc. In general, the plastic material will be of the type capable of being molded into a desired contour configuration and of maintaining such a configuration, in order to support the filtering material, while being flexible enough, as shown by the arrows 22, to allow the respirator / filtering face piece can be flexed by the movements of opening and closing the pleats, in the direction of the arrows 22, in order to adjust to different facial contours and facial movements of each individual user of the mask. Specifically, the layers of perforated plastic can be composed of different types or combinations of plastic materials, such as vinyl, polyethylene, synthetic rubber, etc., which allow the necessary moldability to compose the desired configuration, while presenting the required flexibility to allow that the pleated mask can fit the face of each individual user.
    [0017] The filter layer 14 can be formed from any of the known filter material types, such as non-woven polyester fiber material, electrostatically charged polypropylene, activated carbon, various natural fibers, such as merino wool or other types of materials used for filtration. Many of these different types of filter material do not withstand high levels of heat, as heat tends to destroy the filtering properties of the material. The method of forming the respirator / filter facepiece described in U.S. Patent 4,850,347 can be used, so that the filter layer 14 is not subjected to high levels of heat.
    [0018] In the structure of the first configuration of the respirator / filter facepiece shown in FIGS. 1 to 4, the pleated inner layer 16 of moldable fabric is provided for comfort. This layer can be formed of a material, such as Spunbond, which will adhere to the inner layer of perforated plastic during the molding process. An alternative structure of the respirator / filter facepiece is shown in FIG. 5. In this structure, the inner non-pleated layer 18 is also formed of a moldable fabric, for greater comfort. This layer can be formed of a material, such as elastic Spunbond, which will adhere to the inner tops of the pleated perforated plastic layer during the molding process and can be stretched to accompany the opening and closing movements of the pleated layers. As an example, the elastic Spunbond can be formed of propylene-based elastomers.
    [0019] Other structures of the first configuration of the pleated respirator / filter facepiece of the present patent application show various means of sealing the part of the peripheral edge of the respirator / filter facepiece on the user's face. In Fig. 2, a nasal fork 24 is shown, to provide additional sealing around the user's nasal region. Also, as shown by the dotted line on the flange part 26, a flange can be adapted around the periphery of the respirator to provide a seal close to the user's face. This additional seal provides a closer fit of the mask to the user's face. As an alternative to the flange shown in Figure 2, the edge portion of the respirator / filter facepiece can be sealed by a molded and malleable gasket adapted to it. This sealing gasket will not only provide sealing of the edge part, thus preventing separation of the layers, but the gasket will also provide a tighter seal of the mask against the user's face. The gasket can be adapted to the edge part after molding the respirator, or it can be molded in place.
    [0020] Figure 6 illustrates a part of a third alternative structure of the first configuration of the respirator / filter facepiece of the present patent application and in particular shows a pleated respirator / filter facepiece having a simpler structure than the first one. and second alternative structures of the first configuration, including only two layers of material. Specifically, in the structure of Figure 6, the first layer of pleated flexible perforated plastic material 10 forms a support for the second layer of pleated filter material 14. Layers 10 and 14 can be made of the materials described above, and an elastic strip can be adapted to keep the respirator / filter facepiece in position.
    [0021] It should be understood that the structure of Figure 6 contemplates the use of a pleated filter material 14, which will, at least to a certain degree, be held in place by a layer of plastic material, even if the filter material is not pressed between two layers of plastic material. As an example, if the layer of filter material 14 is formed from a natural fiber, such as merino wool, then this layer can be comfortably positioned against the user's face. It should also be understood that the relative positions of layers 10 and 14 can be reversed and arranged with the filter material on the outside. Since the structure of the respirator / face filter shown in Figure 6 is simpler in structure and materials, it will be less expensive than the structures shown in Figures 1 to 5. However, the respirator / face filter in Figure 6 does not it will be able to withstand the same degree of utilization as the structures in Figures 1 to 5.
    [0022] Figure 7 illustrates a first method for making the pleated respirator / filter facepiece of the present patent application and specifically a method for molding the respirator / filter facepiece to the desired contour configuration. In the method, as shown in Figure 7, the filter material 14 can be provided on a roll 100, as a first step. As a second step, the filter material 14 can be inserted between the upper and lower perforated plastic sheets 10 and 12, also supplied in rolls 102 and 104, for the first and second configurations of the present patent application. In the third, simpler configuration of the present patent application, only plastic material 10 is used, so that roll 104 containing plastic material 12 is shown on the dotted line.
    [0023] As a third step, a moldable fabric 16 on a roll 106 can be inserted, adjacent to the plastic material 12, for the first configuration of the present patent application. The roller 106 is shown in a dotted manner, since in the second and third configurations of the present patent application Spunbond 16 fabric is not used. As a next step, all layers of material are now brought to a pleat 108 to form the pleated multilayer material used to shape the respirator of the present application. If the second configuration of the present patent application is to be made, then, after pleating by pleat 108, a stretch fabric 18 on a roll 110, shown on the dotted line, is inserted as the next step for forming the respirator.
    [0024] In the next step, molds 112 and 114 in an adjustment station 116, are joined to capture, for the first and second configurations of the present patent application, the pleated sheets of plastic material 10 and 12, the filter material 14 and the fabric 16 or 18, in order to provide the molding of each individual pleated respirator / filter facepiece. All the specific configurations of the pleated respirator / filter facepiece described above, such as the third configuration, and any variants thereof, may be made by the above method, provided that at least one layer of the flexible perforated plastic material is used to support and support the filtering material, in order to allow a high volume of air to pass through the openings of the pleated perforated plastic material.
    [0025] As a final step, the individual respirators / filtering facial parts can be cut from the larger sheets and the edges can be sealed by means of sealing and cutting members 118 and 120, in a sealing and cutting station 122. This will form the respirators / individual perforated facial parts of the present patent application, as shown by the individual perforated respirators / facial parts 124.
    [0026] As an alternative to the method of Figure 7, the method of Figure 8 can be used, characterized in that the pleated material in multiple layers 126, in any of its alternative forms, as shown in Figure 7 can be stored in a roll 128. The pleated material 126 can then, in a first step, pass through a cutting station 130 to be cut into individual pieces to be fitted in respirators / perforated face pieces 124. This is achieved through the same adjustment stations, seal and cut 116 and 122 of Figure 7.
    [0027] Figures 9 to 11 illustrate a second configuration of the pleated respirator / filtering facepiece of the present patent application, with the pleats oriented vertically with respect to the face of the respirator user. The different materials used are the same as those used for the structures of the first configuration and the same numerical references are used for both. The pleated respirator / filter facepiece of Figures 9-11, in a frame, includes four layers of material. Specifically, a pair of pleated flexible perforated plastic layers 10 and 12 can press a layer of pleated filter material 14. A layer of moldable fabric, which can be pleated fabric 16, as shown in Figure 4 or non-pleated elastic fabric 18 as shown in Figure 5, is positioned on the inner surface of the respirator / filter facepiece to provide additional comfort for the pleated respirator / face filter user.
    [0028] An elastic strip 20 can be adapted to the side of the respirator and is used to keep the respirator / filter facepiece in position, against the user's face. In the first configuration, the elastic strip 20 is adapted by passing the strip through a folded upper part of the respirator, while in the second configuration, the strip is stapled to the periphery of the respirator.
    [0029] In the structure of the second configuration of the respirator / filter facepiece shown in Figures 9 to 11, the pleated inner layer 16 of moldable fabric is provided for greater comfort. This layer can be formed of material such as Spunbond, which will adhere to an inner layer of perforated plastic, during the molding process. An alternative structure of the respirator / filter facepiece is shown in Figure 5. In this structure, the non-pleated inner layer 18 is also formed of a moldable fabric, for greater comfort. This layer can be formed of a material, such as elastic Spunbond, which will adhere to the inner tops of the pleated perforated plastic layer during the molding process and can be stretched to accompany the opening and closing movements of the pleated layers. As an example, the elastic Spunbond can be formed of propylene-based elastomers. As an alternative to using this specific material, a common Spunbond fabric can be made elastic, perforating the Spunbond in the manner shown in Fig. 12. This will allow the perforated fabric to expand in the direction shown by arrows 200.
    [0030] In Figure 2, as shown by the dotted line flange part 26, the flange can be adapted around the periphery of the respirator, to provide a seal close to the user's face. Fig. 10 illustrates this flange 26 providing a closer fit of the mask to the user's face.
    [0031] Figure 6 illustrates a part of a third alternative structure of the first configuration of the respirator / filter facepiece of the present patent application which can also be used in the second configuration of the present patent application. The second configuration of the present patent application can be manufactured using the methods illustrated in Figures 7 and 8. In addition, the improved pleated respirator / filter facepiece of the present patent application can also be structured by running pleats. in multiple vertical directions to provide flexibility in multiple directions. The pleats can be on different parts of the respirator or they can be superimposed. The pleats can be horizontal, vertical or in any angular direction.
    [0032] The present application for an invention patent, in this way, provides an improved respirator / filtering facepiece that presents desirable filtering characteristics, while allowing the mask to adjust to the configuration of the user's face, also allowing the passage of a volume of relatively high air, through the mask, for the respective user.
    [0033] Although the present application for a patent has been described with reference to some specific configurations, it should be understood that different adaptations and modifications may be made.
    [0034] All the elements, parts and steps described here are preferably included. It should be understood that any of these elements, parts or steps can be replaced by other elements, parts and steps, or totally excluded, as will be evident to those with experience in the technique.
    [0035] Broadly speaking, this document featured a molded respirator / filter facepiece pleated to the face and for filtering provision, including at least one layer of flexible moldable plastic formed from flexible perforated plastic to provide a plurality of perforations for allow a free passage of air through the mesh. A layer of moldable filter material for filtering air impurities, a layer of flexible plastic formed from flexible perforated plastic and a filter layer for filtering air impurities positioned on top of each other. The moldable multilayer of flexible plastic material and filter material is applied in pleated material and shaped to fit the pleated respirator / filter facepiece in a desired configuration where a layer of flexible perforated plastic material forms a support layer to support the layer of filter material . CONCEPTS
    [0036] This document presented at least the following concepts: Concept 1. Method of making a pleated respirator / filter facepiece to be used on the user's face and for filtering provision, including the following steps, provision of at least one layer of flexible plastic material formed from flexible perforated plastic material to provide a plurality of perforations to allow a free passage of air through the perforated plastic, provision of a layer of filter material for filtering air impurities, positioning of at least one layer of flexible plastic material formed from flexible perforated plastic material and a layer of filter material for filtering air impurities, to remain on top of each other, in order to form a multiple layer of flexible plastic material and filter material, providing a pleat to pleat the sheet material over the pleated material by moving the multiple layer of m flexible plastic material and filter material for the pleat, pleating the multiple layer of flexible plastic material and filter material to form a layer of flexible plastic material and composite filter material, pleated, provision of male and female molding elements with adjusted mold configuration, in general, to the contours of the user's face by moving the layer of pleated flexible plastic material and the filtering material, between the male and female molding elements, and pressing the male and female molding elements together, to adjust the respirator / facepiece filter pleated in the desired configuration, molding at least one layer of flexible perforated plastic material to form a support layer to support the layer of filter material. Concept 2. Method, according to Concept 1, characterized in that two layers of flexible perforated plastic material are provided and characterized in that the filter material layer is pressed between the layers of flexible perforated plastic, when the male and female molding elements female are pressed together. Concept 3. Method, according to Concept 2, additionally including the step of providing a layer of moldable fabric and positioning the layer of moldable fabric adjacent to the inner layer of the two layers of flexible perforated plastic material, before the pleating step to cover the inner surface of the pleated respirator / filter facepiece. Concept 4. Method, according to Concept 2, additionally including the step of providing a layer of moldable elastic fabric and positioning of the layer of moldable fabric adjacent to the inner layer of the two layers of flexible perforated plastic material after the pleating step for cover of the internal surface of the respirator / pleated filter face with the moldable elastic material. Concept 5. Method, according to Concept 4 characterized in that the moldable elastic material is formed as an elastomer based on propylene. Concept 6. Method, according to Concept 4, characterized in that the moldable elastic material is formed as perforated Spunbond. Concept 7. Method, according to Concept 2, additionally including the stage of heating the peripheral edges of the pleated layers of flexible perforated plastic and filtering material to seal the peripheral edge of the respirator / filter facepiece. Concept 8. Method, according to Concept 2, additionally including the step of pre-cutting the pleated flexible perforated plastic layer and the filtering material in a specific configuration, before the molding step. Concept 9. Method, according to Concept 2 additionally including the step of fitting a flange around the peripheral edge of the respirator / filter facepiece. Concept 10. Method, according to Concept 1, additionally including the step of providing a layer of moldable fabric and positioning the layer of moldable fabric adjacent to the inner layer of the layers of flexible perforated plastic material and filtering material, before the pleat to cover the inner surface of the pleated respirator / filter facepiece. Concept 11. Method, according to Concept 1, additionally including the step of providing a layer of moldable elastic fabric and positioning of the layer of moldable fabric adjacent to the inner layer, of the layers of flexible perforated plastic material and of filtering material, after the pleating step to cover the internal surface of the respirator / filter face pleated with the moldable elastic material. Concept 12. Method, according to Concept 11, characterized in that the moldable elastic material is formed as an elastomer based on propylene. Concept 13. Method, according to Concept 11, characterized in that the moldable elastic material is formed as perforated Spunbond. Concept 14. Method according to Concept 1, additionally including the step of heating the peripheral edge of at least one layer of flexible perforated plastic material and filtering material after the molding step to seal the peripheral edge of the respirator / filter facepiece pleated. Concept 15. Method, according to Concept 1 additionally including the step of pre-cutting the pleated flexible perforated plastic layer and the filtering material in a specific configuration, before the molding step. Concept 16. Method, according to Concept 1 additionally including the step of fitting a flange around the peripheral edge of the respirator / filter facepiece. Concept 17. Respirator / pleated molded filter face to be used over the user's face and for filtering provision, including at least one layer of flexible moldable plastic material formed from flexible perforated plastic material to provide a plurality of perforations for allow a free passage of air through the perforated plastic, a layer of moldable filter material for filtering air impurities, at least one layer of flexible plastic material formed from flexible perforated plastic material and a layer of filter material for filtering impurities of air, positioned on top of each other, to form a moldable multilayer of flexible plastic material and filtering material, and characterized in that the moldable multilayer of flexible plastic material and filtering material is applied in pleated and molded material to fit the respirator / facepiece filter pleated in a desired configuration, characterized wherein at least one layer of flexible perforated plastic material forms a support layer to support the layer of filter material. Concept 18. Respirator / pleated molded filter face according to Concept 17 including two layers of flexible perforated plastic material and characterized in that the layer of filter material is pressed between the two layers of flexible perforated plastic, when the two layers of flexible perforated plastic material are shaped to form the pleated respirator / filter facepiece. Concept 19. Respirator / pleated molded filter face, according to Concept 17 additionally including a layer of moldable fabric and positioned adjacent to the inner layer of the layers of flexible perforated plastic material and filter material, before pleating to cover the inner surface of the pleated respirator / filter facepiece. Concept 20. Respirator / pleated molded filter face, according to Concept 17 additionally including a layer of moldable elastic fabric and positioned adjacent to the inner layer of the layers of flexible perforated plastic material, after pleating to cover the inner surface of the respirator / part filter face pleated with moldable elastic material. Concept 21. Respirator / pleated molded filter face, according to Concept 20 characterized in that the elastic moldable material is an elastomer based on propylene. Concept 22. Respirator / pleated molded filter face, according to Concept 20 characterized in that the moldable elastic material is perforated Spunbond. Concept 23. Respirator / pleated molded filter face, according to Concept 17 additionally including sealed peripheral edge of the pleated respirator / filter face piece. Concept 24. Respirator / pleated molded filter face, according to Concept 17 additionally including a flange adapted around the peripheral edge of the respirator / filter face piece.
    权利要求:
    Claims (24)
    [0001]
    1. “METHOD OF MANUFACTURING A PREPARED FACIAL RESPIRATOR FOR FILTERING”, for use on the face of a user and to provide filtration, characterized by consisting of the following steps: supply of at least one layer of flexible plastic material ( 10), (12) formed from flexible perforated plastic material to provide a plurality of perforations to allow free passage of air through the perforated plastic; providing a layer of filter material (14) for filtering air impurities; positioning at least one layer of flexible plastic material (10), (12) formed from flexible perforated plastic material and the layer of filter material (14) for filtering air impurities to settle on top of one another to form a multilayer of flexible plastic material (10), (12) and filter material (14); providing a pleat (108) for pleating a laminated material in pleated material (16); movement of the multilayer of flexible plastic material (10), (12) and filter material (14) to the pleat (108); pleating the multilayer of flexible plastic material (10), (12) and filtering material (14) to form a pleated composite layer of flexible plastic material (10), (12) and filtering material (14); supply of male and female molding components, having a mold configuration (112), (114) that adjusts, in general, to the contours of the user's face; movement of the pleated composite layer of flexible plastic material (10), (12) and filter material (14) between the male and female molding components; and pressing the male and female molding components together to form the pleated facepiece respirator for filtering in the desired configuration, molding at least one layer of flexible perforated plastic material (10), (12) to form a support layer for support the layer of filter material (14).
    [0002]
    2. “METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING”, according to claim 1, characterized by two layers of flexible perforated plastic material (10), (12) being provided and in which the layer of filtering material (14) is placed between the layers of flexible perforated plastic (10), (12) when the male and female molding components are pressed together.
    [0003]
    3. "METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 2, characterized in that it additionally includes the stage of supplying a layer of fabric (16), (18) soft and positioning of the layer of fabric (16), (18) soft adjacent to the inner layer of the two layers of flexible perforated plastic material (10), (12) before the pleating step to cover the inner surface of the pleated facepiece respirator for filtering.
    [0004]
    4. "METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 2, characterized in that it additionally includes the step of supplying a layer of soft elastic fabric (18) and positioning of the adjacent soft fabric layer to the inner layer of the two layers of flexible perforated plastic material (10), (12) after the pleating step to cover the inner surface of the pleated facepiece respirator for filtering with the soft elastic material (18).
    [0005]
    5. “METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING”, according to claim 4, characterized in that the soft elastic material (18) is formed as an elastomer based on propylene.
    [0006]
    6. "METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 4, characterized in that the soft elastic material (18) is formed as perforated continuous filament.
    [0007]
    7. "METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 2, characterized in that it additionally includes the stage of heating the peripheral edges of the pleated layers of flexible perforated plastic (10), (12) and filter material (14) to seal the peripheral edge of the facepiece respirator for filtration.
    [0008]
    8. “METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING”, according to claim 2, characterized in that it additionally includes the pre-cut step of the pleated layer of flexible perforated plastic (10), (12) and material filter (14) to a specific configuration before the molding step.
    [0009]
    9. “METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING”, according to claim 2, characterized in that it additionally includes the step of fixing a flange (26) around the peripheral edge of the facepiece respirator for filtration .
    [0010]
    10. "METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 1, characterized in that it additionally includes the step of supplying a layer of soft fabric (18) and positioning of the fabric layer (18) soft adjacent to the inner layer of the layers of flexible perforated plastic material (10), (12) and filter material (14) before the pleating step to cover the inner surface of the pleated facepiece respirator for filtering.
    [0011]
    11. “METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING”, according to claim 1, characterized in that it additionally includes the step of supplying a layer of soft elastic fabric (18) and positioning of the soft fabric layer ( 18) adjacent to the inner layer of the layers of flexible perforated plastic material (10), (12) and filter material (14) after the pleating step to cover the inner surface of the pleated facepiece respirator for filtering with the elastic material (18 ) soft.
    [0012]
    12. "METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 11, characterized in that the soft elastic material (18) is formed as an elastomer based on propylene.
    [0013]
    13. "METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 11, characterized in that the soft elastic material (18) is formed as perforated continuous filament.
    [0014]
    14. “METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING”, according to claim 1, characterized in that it additionally includes the step of heating the peripheral edge of at least one layer of flexible perforated plastic material (10) , (12) and filter material (14), after the molding step, to seal the peripheral edge of the pleated facepiece respirator for filtering.
    [0015]
    15. “METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING”, according to claim 1, characterized in that it additionally includes the pre-cut step of the pleated layer (126) of flexible perforated plastic (10), (12 ) and filter material (14) in a specific configuration before the molding step.
    [0016]
    16. "METHOD OF MANUFACTURING A PREPARED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 1, characterized in that it additionally includes the step of fixing a flange (26) around the peripheral edge of the facepiece respirator for filtration .
    [0017]
    17. “PRECEDED AND MOLDED FACIAL PIECE RESPIRATOR FOR FILTERING”, for use on a user's face and to provide filtration, including: at least one layer of flexible moldable plastic material (16) formed from perforated plastic material flexible (10), (12) to provide a plurality of perforations to allow free passage of air through the perforated plastic; a layer of moldable filter material (14) for filtering air impurities; at least one layer of flexible plastic material (10), (12) formed from flexible perforated plastic material and the layer of filter material for filtering air impurities sitting on top of one another to form a moldable multilayer of flexible plastic material and filtering material (14); and characterized in that the multilayer (126) moldable of flexible plastic material (10), (12) and filter material (14) is pleated in pleated material (126) and shaped to form the pleated facepiece respirator for filtering in a desired configuration and wherein at least one layer of flexible perforated plastic material (10), (12) forms a support layer to support the layer of filter material (14).
    [0018]
    18. “PREPARED AND MOLDED FACIAL PIECE RESPIRATOR FOR FILTERING” according to claim 17, including two layers of flexible perforated plastic material (10), (12) and characterized by the layer of filter material (14) being placed between the two layers of flexible perforated plastic (10), (12) when the two layers of flexible perforated plastic material (10), (12) are shaped to form the pleated facepiece respirator for filtering.
    [0019]
    19. “PREPARED AND MOLDED FACIAL PIECE RESPIRATOR FOR FILTERING”, according to claim 17, characterized in that it additionally includes a layer of soft fabric (18) and positioned adjacent to the inner layer of the layers of flexible perforated plastic material (10), (12) and filter material (14) before pleating to cover the inner surface of the pleated facepiece respirator for filtering.
    [0020]
    20. "PREPARED AND MOLDED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 17, characterized in that it additionally includes a layer of soft elastic fabric (18) and positioned adjacent to the inner layer of the layers of flexible perforated plastic material (10) , (12) after pleating to cover the inner surface of the pleated facepiece respirator for filtering with the soft elastic material.
    [0021]
    21. "PREPARED AND MOLDED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 20, characterized in that the soft elastic material (18) is an elastomer based on propylene.
    [0022]
    22. "PREPARED AND MOLDED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 20, characterized in that the soft elastic material (18) is a perforated continuous filament.
    [0023]
    23. "PREPARED AND MOLDED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 17, characterized in that it additionally includes a sealed peripheral edge of the pleated facepiece respirator for filtering.
    [0024]
    24. "PREPARED AND MOLDED FACIAL PIECE RESPIRATOR FOR FILTERING", according to claim 17, characterized in that it additionally includes a flange (26) fixed around the peripheral edge of the facepiece respirator for filtration.
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    同族专利:
    公开号 | 公开日
    CA2809868C|2017-10-24|
    AU2011299313A1|2013-03-14|
    BR112013005176A2|2016-04-26|
    JP2013537063A|2013-09-30|
    JP6145406B2|2017-06-14|
    US10834980B2|2020-11-17|
    MX2013002468A|2013-11-04|
    WO2012033749A3|2012-06-21|
    CN103118744A|2013-05-22|
    WO2012033749A2|2012-03-15|
    HK1185299A1|2014-02-14|
    CN103118744B|2015-12-02|
    AU2011299313B2|2015-05-21|
    US20140216477A1|2014-08-07|
    US20120060843A1|2012-03-15|
    MX341808B|2016-09-05|
    CA2809868A1|2012-03-15|
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    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-03-10| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: A62B 18/02 , A62B 18/08 , A62B 7/10 Ipc: A41D 13/11 (2006.01), A62B 23/02 (2006.01), B29C 4 |
    2020-05-26| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2020-12-08| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-02-09| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 06/09/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/807,662|US20120060843A1|2010-09-09|2010-09-09|Pleated filtering face piece respirator|
    US12/807,662|2010-09-09|
    PCT/US2011/050529|WO2012033749A2|2010-09-09|2011-09-06|Pleated filtering face piece respirator|
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