Film bag

Abstract

The utility model provides a membrane bag. The membrane bag comprises a filtering part and a sealing layer, the filtering part comprises screens and filtering layers which are alternately stacked, and the screens are arranged on the outermost side of the filtering part; a peripheral packaging part which is permeated by a glue solution to realize the packaging of the screen is formed at the edge of the screen; the sealing layer is bonded on the surface of the outermost screen of the filtering part, a first bonding area is formed between the sealing layer and the outermost screen of the filtering part, and the first bonding area at least covers the surface of one side, facing the sealing layer, of the peripheral packaging part; the projection of the sealing layer on the outermost screen of the filtering part at least covers the screen; the peripheral packaging part does not protrude out of the side edge of the screen, or the peripheral packaging part comprises a combination area penetrating into the screen and an independent area protruding out of the edge area of the screen, and the width of the independent area is not larger than 40% of the width of the combination area. And the overall stability and the sealing performance of the film bag are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of filtering equipment, in particular to a membrane package. BACKGROUND

[0002] The membrane package usually comprises a filter part and a sealing structure, wherein the filter part is formed by stacking a screen and a filter layer, and the outermost side of the filter part is usually provided with a screen structure. In order to ensure the sealing performance of the membrane package, the periphery of the filter part is usually encapsulated by a peripheral encapsulation part, and a sealing gasket is arranged on the end face of the filter part.

[0003] However, the peripheral encapsulation part of the prior art is usually formed by melting and permeating the screen with epoxy resin and then solidifying, and has relatively high hardness. In addition, the flow direction of the glue solution is difficult to control, so that the part of the peripheral encapsulation part protruding from the screen is difficult to form a flat end face, thereby affecting the bonding effect and sealing effect of the sealing gasket and the filter part, resulting in poor sealing performance and connection stability of the entire membrane package.

[0004] Therefore, it is urgent for those skilled in the art to provide a membrane package with good connection stability and sealing performance. SUMMARY

[0005] The technical problem to be solved by the utility model is to overcome the defects in the prior art, thereby providing a membrane package.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A membrane package comprises a filter part and a sealing layer.

[0008] The filter part comprises a screen and a filter layer arranged alternately, and the outermost side of the filter part is provided with the screen.

[0009] The edge of the screen is formed with a peripheral encapsulation part permeated by glue solution to encapsulate the screen.

[0010] The sealing layer is bonded to the surface of the outermost screen of the filter part, and forms a first bonding area between the outermost screen of the filter part, and the first bonding area covers at least the surface of the peripheral encapsulation part on the side facing the sealing layer.

[0011] The projection of the sealing layer on the outermost screen of the filter part covers at least the screen.

[0012] The peripheral encapsulation part does not protrude from the side edge of the screen,

[0013] or,

[0014] The peripheral sealing part comprises a combined area penetrating the screen and an independent area protruding from the edge area of the screen, and the width of the independent area is not greater than 40% of the width of the combined area.

[0015] Through the above technical scheme, firstly, the peripheral sealing part is formed by the glue liquid penetrating the edge of the screen, which can realize the sealing of the periphery of the filtering part, and on the other hand, the glue liquid of the peripheral sealing part is subjected to the limiting action of the screen during the penetration of the screen edge, so that the peripheral sealing part has a more flat surface and better bondability, thereby increasing the bonding effect between the outermost screen and the sealing layer. Further, the sealing layer and the outermost screen of the filtering part are connected by bonding, which increases the fixing effect of the sealing layer and is relatively simple to process; in addition, the first bonding area is formed between the sealing layer and the filtering part, which covers at least one side end face of the peripheral sealing part towards the sealing layer, effectively increasing the bonding area of the sealing layer, the filtering part and the outermost screen, and at the same time, the projection of the sealing layer on the outermost screen of the filtering part covers at least the screen, so that the peripheral sealing part, the sealing layer and the filtering part can form a good seal.

[0016] Further, the structure of the peripheral sealing part is reasonably set, which can balance its sealing effect and surface flatness to a certain extent. Specifically, when the peripheral sealing part does not protrude from the side edge of the screen, the peripheral sealing part is completely limited by the screen, which can make the peripheral sealing part have a more flat surface and better bondability, so that the bonding effect between the peripheral sealing part and the sealing layer is better, and on the other hand, the peripheral sealing part can be formed by directly scraping glue on the side edge of the filtering part during processing, which is more convenient to process. When the peripheral sealing part comprises a combined area and an independent area, and the width of the independent area is not greater than 40% of the width of the combined area, the area corresponding to the combined area of the screen edge is formed by the combined area of the screen and the peripheral sealing part, so that during the formation of the combined area, on the one hand, the flow guiding effect of the screen can be utilized to make the combined area form a more flat surface, and on the other hand, the unevenness caused by thermal expansion and cold contraction can be reduced, further increasing the flatness of the surface of the combined area, so that the combined area can form a good seal with the sealing layer, and the independent area can further bond with the sealing layer and the filtering layer, increasing the connection strength between the sealing layer and the filtering layer. At the same time, the independent area protrudes from the edge of the screen, so that the sealing effect of the independent area on the screen and the filtering layer is better, increasing the sealing performance of the entire membrane package. At the same time, the flat surface of the membrane package also helps to improve the sealing between the membrane packages or between the membrane package and the clamp during stacking, thereby improving the reliability of the membrane package in the processes of concentration, filtration and the like.

[0017] Preferably, the first bonding area is arranged around the side edge area of the outermost screen.

[0018] The outermost screen also has a communication hole in fluid communication with the screen and a sealing hole in fluid seal with the screen, and the first bonding area also surrounds the edge area of the sealing hole of the outermost screen.

[0019] Through the above technical solution, the first bonding area surrounds the edge area of the screen, which can increase the bonding area of the sealing layer and the outermost screen, further increase the connection stability between the two, and effectively ensure the sealing effect between the sealing layer and the screen. Furthermore, the first bonding area also surrounds the edge area of the sealing hole of the outermost screen, which can further increase the connection stability of the sealing layer and the outermost screen, and also increase the sealing performance of the sealing hole on the outermost screen.

[0020] Preferably, the outermost screen of the filter part is set as a filtrate screen, and the first bonding area also includes an effective filtration area of the filtrate screen.

[0021] Or,

[0022] The outermost screen of the filter part is set as a liquid inlet screen, and the projection of the first bonding area on the liquid inlet screen does not overlap the effective filtration area of the liquid inlet screen.

[0023] Through the above technical solution, it can be understood that when the outermost screen of the filter part is set as a liquid inlet screen, the projection of the first bonding area on the liquid inlet screen does not overlap the effective filtration area of the liquid inlet screen, which can effectively avoid the contact between the backflow liquid and the first bonding area. When the outermost screen is set as a filtrate screen, the membrane package is mainly used in the field of concentration. Therefore, the first bonding area also includes the effective filtration area of the filtrate screen, so that the sealing layer and the filtrate screen are bonded as a whole, which can effectively improve the stability of the bonding between the sealing layer and the filtrate screen.

[0024] Preferably, the outer end surface of the peripheral packaging part protrudes from the outer end surface of the outermost screen by a predetermined thickness H, and the value range of H satisfies: 0.1mm≦H≦0.3mm.

[0025] Through the above technical solution, the peripheral packaging part is appropriately protruded from the end surface of the screen. On the one hand, it can ensure the sealing connection performance of the sealing layer and the screen. On the other hand, it can reduce the protrusion of part of the fibers of the screen from the peripheral packaging area due to the unevenness of the screen, thereby avoiding the uneven surface of the peripheral packaging part affecting the bonding performance of the peripheral packaging part and the sealing layer.

[0026] Preferably, the glue solution of the peripheral packaging part penetrates to the one side end surface of the filter layer along the screen to the center of the membrane package, so as to form an overlapping area covering part of the end surface of the filter layer.

[0027] The width W of the overlapping area satisfies: W≦3mm.

[0028] By the above technical solution, the setting of the overlapping area can increase the sealing effect between the screen and the filter layer, so as to improve the sealing effect of the peripheral packaging part on the filter layer. After a certain width is formed in the overlapping area, the abutting area of the peripheral packaging part and the filter layer can be increased, and thus the combination tightness between the filter layer and the screen can be improved. At the same time, it can be understood that the overlapping area is also the combined area between the sealing layer and the screen, and thus a certain combined width can be formed between the screen and the sealing layer, so that the filter layer on both sides can be pressed tightly, and the sealing performance of the periphery of the filter layer can be improved.

[0029] Preferably, a protective layer is further included, which is stacked on the side end face of the sealing layer away from the filter part.

[0030] The hardness of the protective layer is greater than the hardness of the sealing layer.

[0031] By the above technical solution, the relatively soft sealing layer and the relatively hard protective layer are matched with each other. The soft sealing layer has better bonding performance, and thus a better bonding structure can be formed between the sealing layer and the screen, and the sealing effect is increased. The hard protective layer can support and protect the soft sealing gasket, so as to ensure the flatness of the sealing layer and the filter part, and increase the sealing effect between the sealing layer and the filter part.

[0032] Preferably, the protective layer is bonded with the sealing layer and forms a second bonding area.

[0033] The area ratio of the second bonding area to the sealing layer is greater than 50%, and / or the second bonding area at least surrounds the edge of the sealing layer.

[0034] By the above technical solution, the protective layer and the sealing layer are bonded and form a second bonding area, and the connection mode of the second bonding area and the sealing layer is reasonably set, so as to effectively increase the stability of the connection between the sealing layer and the protective layer.

[0035] Preferably, the edge of the sealing layer is flush with the edge of the filter part, and the edge of the protective layer protrudes from the sealing layer.

[0036] Or,

[0037] The edge of the sealing layer and the edge of the protective layer both protrude from the filter part.

[0038] Preferably, at least part of the edge of the screen protrudes from the filter layer.

[0039] Preferably, the maximum width W1 of the edge of the screen protruding from the filter layer is 3-10 mm, and / or the maximum width of the edge of the screen protruding from the filter layer is not less than 60% of the width of the peripheral packaging part.

[0040] Through the technical scheme, the screen is arranged to protrude from the filter layer, so that the glue liquid of the peripheral packaging portion can better penetrate to the edge of the screen, and meanwhile can be filled between the screens, thereby increasing the supporting effect and sealing performance of the peripheral packaging portion on the filter portion, and meanwhile, the influence of the edge area extrusion on the filter layer can be reduced.

[0041] Compared with the prior art, the utility model has at least the following beneficial effects:

[0042] 1、First, the peripheral packaging portion is formed by the glue liquid penetrating the edge of the screen to form a package, which can realize the sealing of the periphery of the filter portion on one hand, and on the other hand, the glue liquid of the peripheral packaging portion is subjected to the limiting action of the screen during the penetration of the screen edge, so that the screen has a more flat surface and better bondability, thereby increasing the bonding effect of the outermost screen and the sealing layer. Further, the sealing layer and the outermost screen of the filter portion are connected in a bonded manner, which increases the fixing effect of the sealing layer and is relatively simple to process; in addition, the first bonding area is formed between the sealing layer and the filter portion, the first bonding area covers at least one side end face of the peripheral packaging portion facing the sealing layer, which effectively increases the bonding area of the sealing layer and the filter portion and the outermost screen, and at the same time, the projection of the sealing layer on the outermost screen of the filter portion covers at least the screen, so that the peripheral packaging portion, the sealing layer and the filter portion can form a good seal. Further, the structure of the peripheral packaging portion is reasonably arranged, which can take into account the sealing effect and surface flatness to a certain extent. Specifically, when the peripheral packaging portion does not protrude from the side edge of the screen, the peripheral packaging portion is completely limited by the screen, on one hand, the peripheral packaging portion has a more flat surface and better bondability, so that the bonding effect with the sealing layer is better, and on the other hand, during processing, the glue can be directly scraped on the side edge of the filter portion to form, which is more convenient to process; when the peripheral packaging portion includes a combination area and an independent area, and the width of the independent area is not greater than 40% of the width of the combination area, the area corresponding to the edge of the screen in the combination area is formed by the combination of the screen and the combination area of the peripheral packaging portion, so that during the formation of the combination area, on one hand, the flow guiding effect of the screen can be utilized to form a more flat surface, and on the other hand, the unevenness caused by thermal expansion and contraction can be reduced, thereby further increasing the flatness of the surface of the combination area to form a good seal between the combination area and the sealing layer. The independent area can further be bonded with the sealing layer and the filter layer, thereby increasing the connection strength between the sealing layer and the filter layer, and at the same time, the independent area protrudes from the edge of the screen, so that the sealing effect of the independent area on the screen and the filter layer is better, thereby increasing the sealing performance of the entire membrane package.

[0043] 2, the peripheral packaging part is appropriately protruded from the end surface of the screen, on the one hand, the sealing layer and the screen can ensure the sealing connection performance; on the other hand, the protruding of the screen fiber in the peripheral packaging area due to the unevenness of the screen can be reduced, and the uneven surface of the peripheral packaging part can be avoided to affect the bonding performance of the peripheral packaging part and the sealing layer.

[0044] 3, the softer sealing layer and the harder protective layer are matched with each other, wherein the soft sealing layer has better bonding performance, and can form better bonding structure with the screen, thereby increasing the sealing effect; the hard protective layer can support and protect the soft sealing gasket, which can ensure the flatness of the sealing layer and the filtering part, and increase the sealing effect between the sealing layer and the filtering part. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the specific embodiment of the present application or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0046] Figure 1 The structure diagram provided in the first embodiment of the present application.

[0047] Figure 2 The structure diagram provided in the second embodiment of the present application. Figure 1 The enlarged schematic view of D1 position in the embodiment.

[0048] Figure 3 The structure diagram provided in the third embodiment of the present application.

[0049] Figure 4 The structure diagram provided in the third embodiment of the present application. Figure 3 The enlarged schematic view of D2 position in the embodiment.

[0050] Figure 5 The structure diagram provided in the third embodiment of the present application.

[0051] Figure 6 The structure diagram provided in the third embodiment of the present application. Figure 5 The enlarged schematic view of D3 position in the embodiment.

[0052] Explanation of reference signs:

[0053] 1, filter part;11, screen;111, liquid inlet screen;112, filtrate screen;12, filter layer;121, liquid inlet through hole;122, filtrate through hole;2, sealing layer;3, peripheral packaging part;30, overlapping area;31, bonding area;32, independent area;4, first bonding area;5, communication hole;51, liquid inlet screen liquid inlet hole;52, filtrate screen filtrate hole;6, sealing hole;61, filtrate screen filtrate hole;62, filtrate screen liquid inlet hole;7, protective layer;8, second bonding area. DETAILED DESCRIPTION

[0054] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0055] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0056] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] Embodiment one

[0058] Reference Figure 1 and Figure 2The utility model embodiment provides a kind of membrane package, including filter part 1 and sealing layer 2.Wherein, filter part 1 includes screen 11 and filter layer 12 of alternative stacking arrangement, and the outermost of filter part 1 is set as screen 11;The edge of screen 11 is formed with by glue liquid permeation to realize the periphery encapsulation of screen 11 Periphery encapsulation part 3;Sealing layer 2 is bonded on the surface of the outermost screen 11 of filter part 1, and between the outermost screen 11 of filter part 1, form first bonding area 4, and first bonding area 4 at least covers the surface of periphery encapsulation part 3 towards sealing layer 2 side;The projection of sealing layer 2 on the outermost screen 11 of filter part 1 at least covers screen 11.

[0059] It should be understood that the periphery encapsulation part 3 is permeated by the glue liquid to form the encapsulation of the edge of the screen 11, which can realize the sealing of the periphery of the filter part 1 on the one hand, and on the other hand, the glue liquid of the periphery encapsulation part 3 is limited by the screen 11 during the permeation of the edge of the screen 11, so that the screen 11 has a more flat surface and better bondable performance, thereby increasing the bonding effect between the screen 11 located at the outermost and the sealing layer 2. Furthermore, the sealing layer 2 and the outermost screen 11 of the filter part 1 are connected by bonding (such as by using pressure-sensitive adhesive), which increases the fixing effect of the sealing layer 2 and is relatively simple to process. In addition, the first bonding area 4 is formed between the sealing layer 2 and the filter part 1, which at least covers the side surface of the periphery encapsulation part 3 towards the sealing layer 2, effectively increasing the bonding area between the sealing layer 2 and the filter part 1 and the outermost screen 11. Meanwhile, the projection of the sealing layer 2 on the outermost screen 11 of the filter part 1 at least covers the screen 11, so that the periphery encapsulation part 3, the sealing layer 2 and the filter part 1 can form a good seal.

[0060] Further, in the present embodiment, the periphery encapsulation part 3 does not protrude from the side edge of the screen 11, and the edge of the periphery encapsulation part 3 is flush with the edge of the screen 11. It can be understood that in the present embodiment, the periphery encapsulation part 3 is completely limited by the screen 11, which can make the periphery encapsulation part 3 have a more flat surface and better bondable performance, so that the bonding effect between the periphery encapsulation part 3 and the sealing layer 2 is better, and on the other hand, the periphery encapsulation part 3 can be formed by directly scraping glue on the side edge of the filter part 1 during processing, which is more convenient to process. It can also be understood that since the edge of the periphery encapsulation part 3 is flush with the edge of the screen 11 in the present embodiment, the edge of the screen 11 is actually the edge of the filter part 1.

[0061] In order to increase the bonding area between the sealing layer 2 and the outermost screen 11, and further increase the stability of the connection between the outermost screen 11 and the sealing layer 2, in the present embodiment, the first bonding area 4 is arranged around the circumferential edge region of the outermost screen 11. It should be understood that the first bonding area 4 is arranged around the circumferential edge of the outermost screen 11, which can effectively ensure the sealing effect between the sealing layer 2 and the screen 11.

[0062] Further, in the embodiment, the edge of the sealing layer 2 is flush with the edge of the outermost screen 11, and of course, in other embodiments, the edge of the sealing layer 2 can also protrude from the edge of the outermost screen 11.

[0063] Further, the outermost screen 11 also has a communication hole 5 in fluid communication with the screen 11 and a sealing hole 6 in fluid sealing with the screen 11, and the first bonding area 4 also surrounds the edge area of the sealing hole 6 provided on the outermost screen 11, which can further increase the connection stability of the sealing layer 2 and the outermost screen 11, and also can increase the sealing performance of the sealing hole 6 on the outermost screen 11.

[0064] Further, in the embodiment, the screen 11 located at the outermost of the filter part 1 is provided as a liquid inlet screen 111, and the projection of the first bonding area 4 on the liquid inlet screen 111 does not overlap with the effective filtering area of the liquid inlet screen 111, which can effectively avoid the contact between the backflow liquid and the first bonding area 4.

[0065] Of course, in other embodiments, the screen 11 located at the outermost of the filter part 1 can also be provided as a filtrate screen 112. Since when the outermost screen 11 is provided as a filtrate screen 112, the membrane package is mainly used in the field of concentration, therefore, the first bonding area 4 also includes the effective filtering area of the filtrate screen 112, that is, the sealing layer and the outermost filtrate screen are integrally bonded, and in this way of integrally bonding the sealing layer 2 and the filtrate screen 112, the stability of the bonding between the sealing layer 2 and the filtrate screen 112 can be effectively improved.

[0066] Referring to Figure 1 and Figure 2 It can be understood that the communication hole 5 located on the liquid inlet screen 111 is a liquid inlet hole 51 of the liquid inlet screen, and the communication hole 5 located on the filtrate screen 112 is a filtrate hole 52 of the filtrate screen, the sealing hole 6 located on the liquid inlet screen 111 is a filtrate hole 61 of the liquid inlet screen, and the filtrate screen inlet hole 62 located on the filtrate screen 112. Correspondingly, the filter layer 12 is also provided with a liquid inlet through hole 121 and a filtrate through hole 122; correspondingly, the sealing layer 2 is also provided with a sealing layer communication hole 21 and a sealing layer packaging hole 22. The liquid inlet screen 111, the filter layer 12, and the filtrate screen 112 are alternately stacked to form the filter part 1, and when the sealing layer 2 is stacked and packaged at the outermost end face of the filter part 1, the liquid inlet screen inlet hole 51, the liquid inlet through hole 121, the filtrate screen inlet hole 62, and the sealing layer communication hole 21 are oppositely arranged, and the filtrate screen filtrate hole 52, the filtrate through hole 122, the liquid inlet screen filtrate hole 61, and the sealing layer packaging hole 22 are oppositely arranged.

[0067] Further, the sealing holes 6 are all formed by the hole sealing members 9, and the hole sealing members 9 on the outermost screen 11 protrude from the outer end surface of the screen 11. Taking the liquid inlet screen filter hole 61 on the liquid inlet screen 11 as an example, the hole sealing member 9 on the periphery thereof protrudes from the outer end surface of the liquid inlet screen 11, and the upper end surface of the part of the hole sealing member 9 protruding from the liquid inlet screen 11 is also bonded to the sealing layer 2 through the first bonding area 4.

[0068] From the above, it can be understood that the "first bonding area 4 is formed between the sealing layer 2 and the filter part 1" means that the filter part 1 and the sealing layer 2 are indirectly bonded through the first bonding area 4, that is, the first bonding area 4 is formed between the periphery sealing part 3 protruding from the end surface of the screen 11 and the sealing layer 2, and the bonding surface between the periphery sealing part 3 and the sealing layer 2 is the first bonding area 4. The "first bonding area 4 is formed between the sealing layer 2 and the filter part 1" also means that the filter part 1 and the sealing layer 2 are directly bonded through the first bonding area 4, that is, the bonding surface between the hole sealing member 9 and the sealing layer 2 is the first bonding area 4.

[0069] In order to ensure the extrusion and sealing effect on the filter layer 12, at least part of the edges of the screen 11 protrude from the filter layer 12. Referring to Figure 1 and Figure 2 In this embodiment, the filter screen 112 is provided with one layer, the liquid inlet screen 111 is provided with two layers, and both the liquid inlet screen 111 and the filter screen 112 protrude from the filter layer 12. Of course, in other embodiments, the liquid inlet screen 111 and the filter screen 112 can also be provided with multiple layers, and part of the screen 11 can protrude from the filter layer 12, for example, the liquid inlet screen 111 protrudes from the filter layer 12, and the filter screen 112 is flush with the filter layer 12.

[0070] It can be understood that by providing the screen 11 to protrude from the filter layer 12, the glue solution of the periphery sealing part 3 can better penetrate into the edges of the screen 11, and at the same time, can also fill between the screens 11, increasing the support effect and sealing performance of the periphery sealing part 3 to the filter part 1, and at the same time, can also reduce the influence of the edge area extrusion on the filter layer 12.

[0071] Further, the maximum width W1 of the edge of the screen 11 protruding from the filter layer 12 can be 3mm, 5mm or 10mm. It should be understood that the value of W1 can be 3-10mm.

[0072] Further, the maximum width W1 of the edge of the screen 11 protruding from the filter layer 12 is not less than 60% of the width of the periphery sealing part 3.

[0073] Referring to Figure 1 and Figure 2, the outer end surface of the peripheral packaging portion 3 protrudes from the outer end surface of the outermost screen mesh 11 by a predetermined thickness H, which can be set to 0.1 mm, 0.2 mm, or 0.3 mm, so that the outer end surface of the peripheral packaging portion 3 protrudes appropriately from the outer end surface of the outermost screen mesh 11, which can ensure the sealing connection performance of the sealing layer 2 and the screen mesh 11 on the one hand, and can reduce the protrusion of part of the fibers of the screen mesh 11 from the peripheral packaging area due to the unevenness of the screen mesh 11, thereby avoiding the uneven surface of the peripheral packaging portion 3 affecting the bonding performance of the peripheral packaging portion 3 and the sealing layer 2. It can be understood that the value range of H satisfies: 0.1 mm ≦ H ≦ 0.3 mm.

[0074] Referring to Figure 1 and Figure 2 , the glue solution of the peripheral packaging portion 3 penetrates to the side end surface of the filter layer 12 along the screen mesh 11 in the direction of the center of the membrane package to form an overlapping area 30 covering part of the end surface of the filter layer 12, thereby being able to increase the sealing effect between the screen mesh 11 and the filter layer 12 to improve the sealing effect of the peripheral packaging portion 3 on the filter layer 12.

[0075] Further, the width W of the overlapping area 30 can be set to 1 mm, 2 mm, or 3 mm, and of course, the value range of the width W of the overlapping area 30 satisfies: W ≦ 3 mm. It should be understood that after the overlapping area 30 is formed with a certain width, the abutting area of the peripheral packaging portion 3 and the filter layer 12 can be increased, thereby improving the bonding tightness between the filter layer 12 and the screen mesh 11. At the same time, it can also be understood that the overlapping area 30 is also the bonding area between the sealing layer 2 and the screen mesh 11, thereby being able to form a certain bonding width between the screen mesh 11 and the sealing layer 2, so that the two sides can better compress the filter layer 12 to improve the sealing performance of the periphery of the filter layer 12.

[0076] Embodiment Two

[0077] Referring to Figure 3 and Figure 4 , based on the above-mentioned embodiment one, the difference of the present embodiment is that the peripheral packaging portion 3 includes a bonding area 31 penetrating into the screen mesh 11 and an independent area 32 protruding from the edge area of the screen mesh 11, and the width W32 of the independent area 32 is not greater than 40% of the width W31 of the bonding area 31.

[0078] Further, in the present embodiment, the first bonding area 4 completely covers the edges of the screen mesh 11 and the bonding area 31, and also completely covers the edges of the independent area 32. Of course, in other embodiments, the first bonding area 4 can only cover the edges of the screen mesh 11 and the bonding area 31.

[0079] It can be understood that in the embodiment, the surface of the bonding area 31 of the peripheral sealing portion 3 is flat, which can form a good density with the sealing layer 2, and the surface of the independent area 32 can be further bonded, thereby increasing the connection strength between the sealing layer 2 and the filter layer 12. Meanwhile, the independent area 32 protrudes from the edge of the screen 11, so that the sealing effect of the independent area 32 on the screen 11 and the filter layer 12 is better, and the sealing performance of the entire membrane package is increased.

[0080] Embodiment three

[0081] Referring to Figure 5 and Figure 6 , based on the above-mentioned embodiment one, the difference of the embodiment is that it further comprises a protective layer 7, which is stacked on the side end face of the sealing layer 2 away from the filter portion 1; the hardness of the protective layer 7 is greater than that of the sealing layer 2.

[0082] It should be understood that in the embodiment, the softer sealing layer 2 and the harder protective layer 7 cooperate with each other, wherein the soft sealing layer 2 has better bonding performance, thereby forming a better bonding structure with the screen 11 and increasing the sealing effect; and the hard protective layer 7 can support and protect the soft sealing gasket, which can not only ensure the flatness of the sealing layer 2 and the filter portion 1, but also increase the sealing effect between the sealing layer 2 and the filter portion 1.

[0083] Further, the protective layer 7 is bonded with the sealing layer 2 to form a second bonding area 8, and the second bonding area 8 at least surrounds the edge of the sealing layer 2. By bonding the protective layer 7 and the sealing layer 2 to form the second bonding area 8 and reasonably setting the connection mode of the second bonding area 8 and the sealing layer 2, the stability of the connection between the sealing layer 2 and the protective layer 7 can be effectively increased.

[0084] Still further, in order to further increase the stability of the bonding between the protective layer 7 and the sealing layer 2, the area ratio of the second bonding area 8 to the sealing layer 2 is greater than 50%. Specifically, in the embodiment, the second bonding area 8 covers the entire area where the protective layer 7 and the sealing layer 2 are in contact.

[0085] Referring to Figure 5 and Figure 6 , the edge of the sealing layer 2 is flush with the edge of the filter portion 1, and the edge of the protective layer 7 protrudes from the sealing layer 2, so as to ensure the supporting and extruding effect of the protective layer 7 on the sealing layer 2 and the filter portion 1. Of course, in other embodiments, the edges of the sealing layer 2 and the protective layer 7 can both protrude from the filter portion 1.

[0086] Referring to Figure 5 and Figure 6The protective layer 7 is also provided with a protective layer communication hole 71 and a protective layer sealing hole 72, wherein the protective layer communication hole 71 is opposite to the sealing layer communication hole 21, and the protective layer sealing hole 72 is opposite to the sealing layer packaging hole 22 when the protective layer 7 is stacked with the sealing layer 2.

[0087] The above-mentioned embodiments are only the preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A film package characterized by, The filter part (1) and the sealing layer (2); The filter part (1) comprises filter layers (12) and screen meshes (11) arranged in an alternating stack, and the outermost side of the filter part (1) is provided with the screen mesh (11); The edge of the screen mesh (11) is formed with a peripheral packaging part (3) which is penetrated by the glue solution to realize packaging of the screen mesh (11); The sealing layer (2) is bonded to the surface of the outermost screen mesh (11) of the filter part (1) and forms a first bonding area (4) with the outermost screen mesh (11) of the filter part (1), and the first bonding area (4) covers at least the surface of the peripheral packaging part (3) on the side facing the sealing layer (2); The projection of the sealing layer (2) on the outermost screen mesh (11) of the filter part (1) covers at least the screen mesh (11); The peripheral packaging part (3) does not protrude from the side edge of the screen mesh (11), Or, The peripheral packaging part (3) comprises a bonding area (31) which penetrates the screen mesh (11) and a separate area (32) which protrudes from the edge area of the screen mesh (11), and the width of the separate area (32) is not greater than 40% of the width of the bonding area (31).

2. The film package of claim 1, wherein The first bonding area (4) is arranged around the peripheral side edge area of the outermost screen mesh (11); The outermost screen mesh (11) is further provided with a communication hole (5) in fluid communication with the screen mesh (11) and a sealing hole (6) in fluid sealing with the screen mesh (11), and the first bonding area (4) is further arranged around the edge area of the sealing hole (6) of the outermost screen mesh (11).

3. The film package of claim 1, wherein The screen mesh (11) located at the outermost side of the filter part (1) is provided as a filtrate screen mesh (11), and the first bonding area (4) further comprises an effective filtration area of the filtrate screen mesh (11); Or, The screen mesh (11) located at the outermost side of the filter part (1) is provided as a liquid inlet screen mesh (11), and the projection of the first bonding area (4) on the liquid inlet screen mesh (11) does not overlap with the effective filtration area of the liquid inlet screen mesh (11).

4. The film package of claim 1, wherein The outer end face of the peripheral packaging part (3) protrudes from the outer end face of the outermost screen mesh (11) by a predetermined thickness H, and the value range of H satisfies 0.1mm≦H≦0.3mm.

5. The film package of claim 1, wherein The glue solution of the peripheral packaging part (3) penetrates to the side end face of the filter layer (12) in the direction of the center of the membrane package along the screen mesh (11) to form an overlapping area (30) covering part of the end face of the filter layer (12); The width W of the overlapping area (30) satisfies the value range W≦3mm.

6. The film package of claim 1, wherein Further comprising a protective layer (7) stacked on the side end face of the sealing layer (2) away from the filter part (1); The hardness of the protective layer (7) is greater than the hardness of the sealing layer (2).

7. A film packet according to claim 6, characterised in that The protective layer (7) is bonded to the sealing layer (2) and forms a second bonding area (8); The area ratio of the second bonding area (8) to the sealing layer (2) is greater than 50%, and / or the second bonding area (8) at least surrounds the edge of the sealing layer (2).

8. The film package of claim 6, wherein, The edge of the sealing layer (2) is flush with the edge of the filter part (1), and the edge of the protective layer (7) protrudes from the sealing layer (2); Or, The edge of the sealing layer (2) and the edge of the protective layer (7) both protrude from the filter part (1).

9. The film package of claim 1, wherein, The edge of at least part of the screen (11) protrudes from the filter layer (12).

10. The film package of claim 1, wherein, The maximum width W1 of the screen (11) edge protruding from the filter layer (12) is 3-10 mm, and / or the maximum width of the screen (11) edge protruding from the filter layer (12) is not less than 60% of the width of the peripheral packaging part (3).

Images