KR20120101088A - Ventilation filter, method for affixing the ventilation filter, and method for manufacturing electrical device - Google Patents

Ventilation filter, method for affixing the ventilation filter, and method for manufacturing electrical device Download PDF

Info

Publication number
KR20120101088A
KR20120101088A KR1020127016504A KR20127016504A KR20120101088A KR 20120101088 A KR20120101088 A KR 20120101088A KR 1020127016504 A KR1020127016504 A KR 1020127016504A KR 20127016504 A KR20127016504 A KR 20127016504A KR 20120101088 A KR20120101088 A KR 20120101088A
Authority
KR
South Korea
Prior art keywords
protective film
adhesive layer
ventilation
ventilation filter
opening
Prior art date
Application number
KR1020127016504A
Other languages
Korean (ko)
Other versions
KR101812790B1 (en
Inventor
노부유키 오스기
Original Assignee
니뽄 고아 가부시끼가이샤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 니뽄 고아 가부시끼가이샤 filed Critical 니뽄 고아 가부시끼가이샤
Publication of KR20120101088A publication Critical patent/KR20120101088A/en
Application granted granted Critical
Publication of KR101812790B1 publication Critical patent/KR101812790B1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023—Screens for loudspeakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/35—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for venting arrangements

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

An object of the present invention is to provide a ventilation filter having a shape suitable for preventing peeling of the first adhesive layer when the protective film is peeled from the second adhesive layer. The first adhesive layer 2 formed on the base sheet 1, the ventilation film 3 formed on the first adhesive layer 2, the second adhesive layer 4 formed on the ventilation film 3, and the second A ventilation filter having a protective film (5) formed on the adhesive layer (4), wherein the first adhesive layer (2) and the second adhesive layer (4) each have an opening, and the protective film (5) has an outer peripheral portion of the protective film (5) The ventilation filter in which the cut | disconnect 7 which reaches to the position of the opening part of the 2nd contact bonding layer 4 from the above is formed.

Description

Ventilation filter, fixing method of the ventilating filter, and manufacturing method of electric device {VENTILATION FILTER, METHOD FOR AFFIXING THE VENTILATION FILTER, AND METHOD FOR MANUFACTURING ELECTRICAL DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation filter having a ventilation membrane that can be used for electronic devices requiring waterproofness and dustproofness, for example, an electronic device having an acoustic function, a fixing method of the ventilation filter, and a manufacturing method of an electrical device.

Sound from the inside of the chassis is external to the chassis of electronic devices such as mobile phones, small radios, transceivers, portable music players, laptops, headphones, earphones, outdoor microphones, and digital cameras equipped with electroacoustic transducers such as speakers, microphones, and receivers. The furnace is provided with a through hole for passing from the outside to the inside. This soak hole is formed with a waterproof filter (ventilation membrane) for the purpose of preventing the ingress of water into the electronic equipment. In addition, for example, the optical sensor is provided with a ventilation membrane whose main purpose is to eliminate the difference between dustproof and internal and external pressure.

The ventilation membrane is mounted on the chassis as follows. First, the member which laminated | stacked the base material sheet, the adhesive material A (for example, double-sided adhesive tape), the ventilation film, the adhesive material B, and the protective film (sheet for peeling) in order is produced. Next, a laminate (adhesive material A / ventilating film / adhesive material B / protective film) other than the base sheet is peeled from the base sheet. The laminate is attached to the soak hole with the adhesive material A side at the chassis side. Finally, the protective film is peeled off by removing the end of the protective film.

In general, in order to easily peel off the protective film on the adhesive material, a method of providing a tab on the protective film is known. For example, there exists a method (patent document 1) which uses the part which extended a part of protective film from the edge part of a ventilation film (patent document 1), and the method of mounting a material different from a protective film with a tab (patent document 2).

Japanese Laid-Open Patent Publication No. 2004-10854 (FIG. 3) Japanese Laid-Open Patent Publication 2005-15631 (Fig. 2).

One problem in the technique of peeling off a part of the protective film is that when the protective film is peeled off, not only the protective film but also the adhesive material A is peeled off from the adherend chassis. Although peeling can be prevented by lowering the adhesive strength of adhesive material B and a protective film compared with the adhesive strength of adhesive material A and a to-be-adhered body, the selection range of a material becomes narrow. In addition, when a porous polytetrafluoroethylene film (hereinafter referred to as a "porous PETT membrane") is used as the air permeable membrane, since the porous PETT membrane is stretched in the membrane horizontal direction, the tensile strength with respect to the vertical direction of the membrane is small, and the protection is performed. When peeling a film, the air permeable membrane itself may burst in the vertical direction of the membrane.

By the way, an opening is formed in the said adhesive material B considered by this inventor, and the area | region adhere | attached on a protective film is a frame shape surrounding the periphery of an opening. This is to avoid impeding air permeation by the adhesive material. Accordingly, an object of the present invention is to provide a frame filter in which the adhesive material B is in a frame shape, which is suitable for preventing peeling of the adhesive material A when the protective film is peeled off. To provide a shape.

In order to solve the above problems, the present inventors started various types of protective films, and repeated peeling tests revealed the following matters, namely, from the outer circumference of the protective film to a considerable position of the opening of the adhesive material B. By making an incision, when the part of the protective film is peeled off and peeled off, the protective film is sequentially peeled off along the periphery of the opening of the adhesive material B with this incision as a starting point, and a large force is applied in the direction of the adhesive material A. It turned out that peeling of A of adhesive material was prevented.

The ventilation filter of the present invention was able to achieve the above object,

A ventilation filter having a first adhesive layer formed on a base sheet, a ventilation film formed on the first adhesive layer, a second adhesive layer formed on the ventilation film, and a protective film formed on the second adhesive layer, wherein the first filter The adhesive layer and the second adhesive layer each have an opening, and the protective film is formed with an incision extending from the outer periphery of the protective film to a substantial position of the opening of the second adhesive layer.

In the ventilation filter, the outer peripheral portion of the protective film is preferably configured to have a pickup portion that is not adhered to the second adhesive layer.

In the ventilation filter, the protective film has an opening communicating with the opening of the second adhesive layer, and the cutout is preferably configured to extend from the outer circumference of the protective film to the opening of the protective film. It is preferable to make thickness of a film into 10 micrometers or more and 150 micrometers or less.

In the ventilation filter, it is preferable that a predetermined mark is attached to the pickup section.

In the ventilation filter, the protective film is preferably colored in a chromatic color.

In the ventilation filter, the base sheet preferably has an opening communicating with the opening of the first adhesive layer.

In the ventilation filter, the ventilation membrane is preferably a fluororesin membrane.

In the ventilation filter, the ventilation membrane is preferably a porous polytetrafluoroethylene membrane.

In the ventilation filter, it is preferable that a liquid repellent is added to the surface of the ventilation membrane.

In the ventilation filter, the adhesive layer is preferably a double-sided adhesive tape.

The fixing method of the ventilation filter of the present invention was able to achieve the above object,

On the base sheet, a first adhesive layer having an opening, a ventilation film, a second adhesive layer having an opening, and a protective film are laminated in this order, and the protective film is substantially formed by the opening of the second adhesive layer from the outer periphery of the protective film. A first step of forming a ventilation filter having an incision reaching a position, a second step of peeling the base sheet from the ventilation filter, a third step of mounting the ventilation filter on an adherend, and the incision between It has a 4th process of peeling the protective film by peeling the one side part of the outer peripheral part of the protective film divided into two.

In the said method, it is preferable that the said one side part is peeling off the other one side part on the opposite side, and peeling the said base sheet.

The manufacturing method of the electrical apparatus of the present invention which could achieve the above object,

On the base sheet, a first adhesive layer having an opening, a ventilation film, a second adhesive layer having an opening, and a protective film are laminated in this order, and the protective film is positioned substantially at the opening of the second adhesive layer from the outer peripheral portion of the protective film. A first step of forming a ventilation filter having an incision leading to the second step, a second step of peeling the base sheet from the ventilation filter, a third step of attaching the ventilation filter to the chassis, and two of the incisions interposed therebetween It has a 4th process which peels the one side part of the outer peripheral part of the protective film divided into pieces, and peels the protective film.

In the present invention, since an incision is formed from the outer circumference of the protective film to a substantial position of the opening of the second adhesive layer, the protective film is peeled off in sequence along the periphery of the opening of the second adhesive layer using this incision as a starting point. Therefore, great force is not applied to a 1st contact bonding layer, and peeling of a 1st contact bonding layer is prevented.

1 is a bird's-eye view of a ventilation filter in Embodiment 1 of the present invention.
It is a bird's-eye view which shows the state in which the ventilation filter in Embodiment 1 of this invention was attached to the chassis.
Fig.3 (a)-(c) is an aerial view which shows the state with which the protective film of the ventilation filter in Embodiment 1 of this invention peels in order.
4 (d) to 4 (f) are bird's-eye view showing a state in which the protective film of the ventilation filter is sequentially peeled off after FIG. 3.
FIG. 5A is a plan view of the ventilation filter in Embodiment 2 of the present invention, and (b) is a plan view of another ventilation filter in Embodiment 2 of the present invention.
6 (a) and 6 (b) are plan views of another ventilation filter in Embodiment 2 of the present invention.
Fig. 7 is a plan view of another ventilation filter in Embodiment 2 of the present invention.
8 is a plan view of another ventilation filter in Embodiment 2 of the present invention.
9 is a cross-sectional view of the ventilation filter in the first embodiment.
FIG. 10 is a cross-sectional view of the ventilation filter in Embodiment 3. FIG.
Fig. 11 is a plan view of a ventilation filter in Embodiment 4 of the present invention.
Fig. 12 is a plan view of another ventilation filter in Embodiment 4 of the present invention.
It is a top view of the ventilation filter in Embodiment 5 of this invention.
14 (a) and 14 (b) are plan views of another ventilation filter in Embodiment 5 of the present invention.
Fig. 15 is a sectional view of the ventilation filter in the sixth embodiment of the present invention.
Fig. 16 is a sectional view of another ventilation filter in the sixth embodiment of the present invention.
Fig. 17 is a sectional view of another ventilation filter in the sixth embodiment of the present invention.
Fig. 18 is a sectional view of the ventilation filter in the seventh embodiment of the present invention.
Fig. 19 is a sectional view of the ventilation filter in the eighth embodiment of the present invention.
20 is a cross-sectional view of another ventilation filter in the eighth embodiment of the present invention.
Fig. 21 is a sectional view of another ventilation filter in the eighth embodiment of the present invention.
Fig. 22 is a sectional view of another ventilation filter in the eighth embodiment of the present invention.

1. Structure of Aeration Filter

EMBODIMENT OF THE INVENTION Hereinafter, the structure of the ventilation filter in embodiment of this invention is demonstrated, referring drawings.

(Embodiment 1)

1. Structure of Vent Filter

1 is a bird's eye view of a ventilation filter according to Embodiment 1 of the present invention. In FIG. 1, the 1st adhesive layer 2, the ventilation film 3, the 2nd adhesive layer 4, and the protective film 5 are laminated | stacked in order on the base sheet 1, and the ventilation filter is comprised. The 1st contact bonding layer 2 and the 2nd contact bonding layer 4 have opening part 2a, 4a, respectively (refer FIG. 19-FIG. 22 which is sectional drawing). The protective film 5 is formed with an incision 7 from the outer peripheral portion of the protective film 5 to a position corresponding to the opening 4a of the second adhesive layer 4.

2. Fixing method of ventilation filter and manufacturing method of electric device

The method of fixing the ventilation filter comprised as mentioned above to a to-be-adhered body is demonstrated. First, laminates other than the base sheet 1 (the first adhesive layer 2 / the ventilation membrane 3 / the second adhesive layer 4 / the protective film 5) are peeled from the base sheet 1. As shown in Fig. 2, the laminate is mounted (attached) with the side of the first adhesive layer 2 facing the chassis 6 as the adherend.

Next, the process of peeling the protective film 5 from the 2nd contact bonding layer 4 is demonstrated. (A)-(c) is a bird's-eye view which shows the state which the protective film of the ventilation filter in this Example 1 peels in order. As shown in Fig. 3 (a), as the outer circumferential portion of the protective film 5, one side portion of the portion divided into two by the incision 7 (hereinafter, the one side portion is referred to as the "pickup portion 8" ( 5, the other one side is referred to as "tab 9 (refer to Fig. 5.) Hereinafter, the same except for the form of Fig. 6 (b)) with a tweezers, and the protective film (5) To the top. Although the example which used tweezers is shown in FIG. 3, it is a process which can be automated to "tear off" and "pull out" of course. After the incision 7 is spaced apart as shown in FIG. 3 (b), as shown in FIGS. 3C and 4D and 4E, the periphery of the second adhesive layer 4 is along the periphery. The protective film 5 is peeled off in sequence. When it reaches to the state of FIG. 4E, since the elastic force which tries to return the protective film 5 to the original planar shape acts, the protective film 5 does not need to raise upward more than the 2nd adhesive layer Easily (semi-automatic) departure from (4). That is, the length of pulling up by the tweezers becomes short. Therefore, when automating this process, the working distance (working distance) of the control arm (not shown) used instead of the tweezers can be shortened. For this reason, this invention is useful also in miniaturization of the peeling apparatus (not shown) containing a control arm. In addition, in FIG.4 (d) and (e), tweezers are abbreviate | omitted in order to avoid the complexity of drawing.

In the above description, the one side part of the outer peripheral part of the protective film 5 in which the back surface of the protective film 5 and the 2nd contact bonding layer 4 is not adhere | attached, and divided into two by the incision 7 Although the pick-up part 8 was called and the example which lifted this pick-up part 8 upward was demonstrated, it exists that the part which the protective film 5 does not adhere | attach to the 2nd contact bonding layer 4 of this invention exists. It is not a requirement. Even if the entire back surface of the protective film 5 is adhered to the second adhesive layer 4, when a part of the protective film 5 is removed, the protective film 5 is in turn along the circumference of the second adhesive layer 4. There is an effect of peeling. For example, as shown in FIG. 10 mentioned later, even if it is the part which the protective film 5 adhere | attaches on the 2nd contact bonding layer 4, it is possible to peel off.

As described above, the protective film 5 is formed with an incision 7 extending from the outer circumferential portion of the protective film 5 to a substantial position of the opening of the second adhesive layer 4, thereby peeling off the first adhesive layer 2. A highly effective method of fixing the vent filter, which is prevented, is realized. In the case where the adherend is the chassis 6 constituting the electronic device, an effective method of manufacturing the electric device is realized.

3. Detailed description of each component

Hereinafter, the base material sheet 1, the 1st contact bonding layer 2, the ventilation film 3, the 2nd contact bonding layer 4, and the protective film 5 which comprise a ventilation filter are demonstrated in detail, respectively.

(1) Base Sheet

The base sheet 1 in this embodiment plays a role of storing and transporting the thin air-permeable membrane 3, and there is no particular limitation on the material or the like as long as it is a sheet-shaped member. Or it is preferable to use PET (polyethylene terephthalate) film in which both surfaces were processed by the silicone type release agent. As a material which can be selected other than PET, for example, polyester such as polybutylene terephthalate, polyolefin such as polypropylene, polyethylene, polymethylpentene, resin film such as polycarbonate, glassine paper, quality paper, coated paper, impregnation Paper, such as paper and synthetic paper, metal foil, such as aluminum and stainless steel, etc. are mentioned.

The thickness of the base material sheet 1 is 10-150 micrometers, Preferably it is 50-125 micrometers. Moreover, in order to improve adhesiveness with a mold release agent or an adhesive, the surface of a base material can be corona-discharge-treated, a plasma process, a frame plasma process, etc., and can also form a primer layer. As the primer layer, polymer materials (so-called anchor coating agents) such as polyethylene, polypropylene, styrene copolymers, polyesters, polyurethanes, polyvinyl alcohols, polyethyleneimines, polyacrylates, polymethacrylates, and modified substances thereof may be used. Can be.

(2) First and second adhesive layers

The first and second adhesive layers 2 and 4 have openings 2a and 4a. The shape of the opening is not particularly limited and may be circular, elliptic, rectangular, or polygonal. As a method of forming the 1st, 2nd contact bonding layers 2 and 4 which have an opening pattern, there exist a method by screen printing, and the method of transferring the melt of an adhesive agent to the base sheet 1 with a gravure pattern roll, for example.

As mentioned above, although the adhesive bar may be formed in layer form as the 1st, 2nd contact bonding layers 2 and 4, a double-sided adhesive tape can also be used. The double-sided adhesive tape includes a nonwoven fabric-based double-sided adhesive tape made of a polyethylene nonwoven fabric, a polypropylene nonwoven fabric, a nylon nonwoven fabric, a PET-based double-sided adhesive tape, a polyimide-based double-sided adhesive tape, a nylon-based double-sided adhesive tape, a foam (eg, Polyurethane foam, silicone foam, acrylic foam, polyethylene foam) based double-sided adhesive tape, material less double-sided adhesive tape can be used in various types.

In addition to the adoption of the basic configuration of the present invention in which the incision 7 is provided in the protective film 5, the second adhesive layer 4 and the protective film are compared with the adhesive strength of the first adhesive layer 2 and the adherend. Lowering the adhesive strength is also a preferred form. Also, by adjusting the formation position and length of the incision 7, even if the adhesive strength of the second adhesive layer 4 and the protective film is higher than the adhesive strength of the first adhesive layer 2 and the adherend, the protective film Since the peeling operation of only (5) is enabled, the selectable range of the material is widened.

In addition, in this invention, an adhesive refers to the substance generally used for laminating | stacking an article and an article, and shall include what is called an adhesive.

(3) ventilation membrane

Although polyethylene, polypropylene, polystyrene, polyimide, etc. can be used as a constituent material of the ventilation membrane 3, It is recommended to use the film of fluororesin excellent in water resistance, More preferably, a porous PETT. As the microscopic shape of the air permeable membrane 3, a mesh, mesh or porous material can be used. Porous PETT membranes have excellent spinning properties and are suitable for applications that provide air permeability to the inside and outside of electrical devices while preventing water droplets, oil droplets, and dust from invading.

By the way, porous PETT generally has low surface energy as compared with general-purpose polymer polypropylene (PP) or polyethylene (PE), and weak binding between fine molecular chains in a material. Therefore, porous PETT has lower strength than other high molecular porous membranes. In particular, the porous PETT film, which can be used for waterproofing acoustic equipment, is thinly configured for improving acoustic characteristics, and therefore the strength in the thickness direction is very low. Therefore, in the case of using a porous PETT film as a constituent material of the air permeable membrane 3, since the present invention is applied, the tensile force in the vertical direction of the film during peeling of the protective film 5 is reduced. Very effective in prevention.

Next, the manufacturing method of a porous PETT film | membrane is demonstrated. The porous PETT film is obtained by removing the molding aid from the molded body of the paste obtained by mixing the fine powder of PETT with the molding aid, followed by high temperature highway stretching and further firing as necessary. In the case of uniaxial stretching, the nodes (folded crystals) are minute island shaped at right angles in the stretching direction, and are fibril (folded) in a reed-screen shape that connects the nodes. The linear molecular bundles which were unwrapped and drawn out by the stretching) are oriented in the stretching direction. In addition, the fibrillated space or the space partitioned between the fibrils and the nodes has a hollow fibrous structure. In the case of biaxial stretching, the fibrils are radially expanded, and the nodes connecting the fibrils are dotted with islands, so that a fibrous web-like fibrous structure has a large number of spaces partitioned by the fibrils and the nodes.

The ventilation membrane 3 may be a uniaxially stretched porous PETT film or a biaxially stretched porous PETT film.

The ventilation membrane 3 preferably has a strength that can be used alone (in a single layer), but may be used by laminating it with a breathable reinforcing layer such as a nonwoven fabric, a fabric such as a woven fabric or a knitted fabric.

As the physical characteristics of the ventilation membrane 3, it is preferable to have a water pressure of 1 kPa or more, more preferably 10 kPa or more, and a ventilation (JIS P 8117) of 1000 seconds or less, more preferably 100 seconds or less.

It is preferable that the air permeable membrane 3 is provided with liquid repellency on the surface in the pore. By making the air permeable membrane 3 repellent, various contaminants such as body fluids, machine oil, water droplets, and the like can be suppressed from being penetrated or maintained in the pores of the air permeable membrane 3. These contaminants deteriorate the collection characteristics and the ventilation characteristics of the ventilation membrane 3 and cause damage to the function as the ventilation membrane.

In addition, in the claims and the present specification, as a method of imparting liquid repellency, a liquid repellent material may be used or a liquid repellent may be added. The term "water repellent" includes "water repellent", "oil repellent", "water repellent", and the like. Hereinafter, it demonstrates taking water-repellent liquid-repellent oil-based polymer as an example.

As the water-repellent liquid-repellent oil-based polymer, a polymer having a fluorinated side chain can be used. Details of the water-repellent liquid-repellent oil-based polymer and a method of incorporating it into a porous PETT membrane are disclosed in WO 94/22928 and the like.

Moreover, various functionalities can be imparted to the ventilation membrane 3 by adding a hydrophilic material, a conductive material, a coloring material, an antistatic material, an antimicrobial material, etc. in addition to the above liquid repellent material.

(4) protective film

The protective film 5 protects the air permeable membrane 3 during storage and transport. As the material, a release treatment is performed on paper and a resin film can be suitably used. Although the raw material of a resin film does not have a restriction | limiting in particular, Polyolefin resin, such as PE and PP; Polyester-based resins such as PET; Etc. are common. Moreover, the mold release process, such as coating a silicone resin etc. to the resin film surface, can be given to a resin film. The thickness of the protective film is not particularly limited, but if it is too thin, the protective function cannot be performed, so that the thickness of the protective film is 10 µm or more, preferably 50 µm or more. In addition, by providing the protective film 5 with an appropriate elastic force, as described above, the entirety of the protective film 5 is easily peeled off only by removing the protective film 5 a little upwards, so that the protective film 5 ), The thickness of the protective film 5 is preferably 10 µm or more, preferably 50 µm or more. On the other hand, when the protective film 5 is too thick, the rigidity of the protective film 5 is increased, and the workability of the protective film 5 is deteriorated, or the peeling of the protective film 5 becomes difficult, so it is preferably 150 μm or less. Preferably it is 125 micrometers or less.

In the present Example 1, it is preferable that the pick-up part 8 is made into the structure which is not adhere | attached to the 2nd contact bonding layer 4. As shown in FIG. For example, in the part of the pick-up part 8, the outer edge of the protective film 5 can be formed so that it may extend from the outer edge of the 2nd adhesive layer 4, On the contrary, the outer edge of the 2nd adhesive layer 4 It can be formed so as to be recessed than the outer edge of the protective film (5). Thereby, the operation | work which peels and peels the protective film 5 becomes efficient.

In Example 1, the outer peripheral portion of the protective film 5 is provided with the pick-up portion 8 on one side with an incision 7 interposed therebetween, and adhered to the second adhesive layer 4 on the other side. The tab 9 which is not provided may be provided. When attaching the ventilation filter in the state of FIG. 1 to the chassis 6 as shown in FIG. 2, when the tab 9 is removed and handling of the ventilation filter is performed, direct contact with the ventilation membrane 3 which is thin and fragile is likely to occur. You can do it without doing it.

In addition, a protective film as shown in Fig. 5 (a) described later for positioning for peeling the airflow filter from the base sheet 1 at the time of conveyance or for positioning the airflow filter to the adherend. A circular hole or an elliptic hole can be formed in the tab 9 of (5), as shown in FIG. In addition, the hole may be rectangular (not shown), such as rectangular or square, and a plurality of holes may be provided in one tab 9.

(Embodiment 2)

Hereinafter, the ventilation filter which concerns on Embodiment 2 of this invention is demonstrated. 5 to 8 show a plan view of the ventilation filter according to Embodiment 2 of the present invention, showing various variations of the label attached to the protective film 5.

The protective film 5 of the ventilation filter of this invention uses a transparent material in many cases. Therefore, when peeling off the protective film 5, recognition of the place (pickup part 8) which should remove the protective film 5 may become difficult. Thus, in the present embodiment, the protective film 5 (especially the pickup section 8) is attached to an optically recognizable sign (for example, a letter, a symbol, a design, a color) to make it easier to recognize a place to be removed. An example is demonstrated. In addition, optically recognizable is not only visually distinguishable, but also detection by a CCD or other optical sensor, and includes not only visible light but also recognition by infrared rays and ultraviolet rays.

In FIGS. 5A and 5B, a recognizable circular mark 10 is attached to the pickup section 8.

In FIG. 6A, the cover 10b of a number (letter of "2" in the original) is attached to the pickup section 8. On the other hand, the mark 9a attached to the tab 9 with the numeral (a letter of " 1 " in the original) is attached to the tab 9 to be removed when the air filter is attached to the chassis 6 as shown in FIG. ) And the pickup section 8 to be removed when the protective film 5 is peeled off.

On the other hand, as shown in FIG. 6 (b), the cover 10b may be disposed on the incision 7 on the opposite side to the example of FIG. 6 (a), that is, on the same side as the cover 10a. Do. In this case, the part to which the front cover 10b was attached is the pick-up part 8, and the effect of this invention is also given by lifting this pick-up part 8 up. In addition, although the tab 9 is removed when the ventilation filter is attached to the chassis 6, the removal position (the cover 10a) is incised as shown in Figs. 6A and 6B. It is desirable to be as far away as possible. This is because only the protective film 5 may be peeled off along the incision 7 when the tab 9 is removed at a position close to the incision 7.

In FIG. 7, a part of the range of the pickup section 8 is colored to form the cover 10. In addition, although not shown in figure, in order to prevent the forgetting of the peeling operation by the overlooking of the protective film 5, the whole of the protective film 5 can also be colored. In this case, it is preferable that the said range of the pick-up part 8 is colored by another different color.

In FIG. 8, the mark 10 of the arrow shape which shows the position of the cut | disconnect 7 is attached to a part of tab 9. As shown in FIG. This arrow can be attached to the pick-up section 8.

(Embodiment 3)

Hereinafter, the ventilation filter which concerns on Embodiment 3 of this invention is demonstrated.

9 is a cross-sectional view of the ventilation filter according to the first embodiment shown in FIG. 1, and FIG. 10 is a cross-sectional view of the ventilation filter according to the third embodiment. In the ventilation filter according to Embodiment 1, the pickup portion 8 is formed by extending the end portion of the protective film 5 outward from the end portion of the second adhesive layer 4, but in Embodiment 3, the pickup portion 8 is shown in FIG. As described above, the pick-up part 8 may be formed by forming the extension member 5b different from the protective film 5.

(Fourth Embodiment)

Hereinafter, the ventilation filter which concerns on Embodiment 4 of this invention is demonstrated. 11 and 12 are plan views of the ventilation filter according to Embodiment 4 of the present invention, showing the variety of shapes of the cutout 7 of the protective film 5. In Embodiment 1, although the example in which the incision 7 was formed in the part extended widely in the protective film 5 was demonstrated, the formation position of the incision 7 is not limited to this, As shown in FIG. It can be any place around (5). In addition, as shown in FIG. 12, the incision 7 may be formed in a curved shape.

When the incision 7 is formed in a straight line, the angle is not particularly limited. For example, as shown in FIG. 11, the intrusion angle (alpha) of the incision 7 with respect to the outer periphery of the 2nd contact bonding layer 4 (angle formed in the same side as the pickup part 8 with respect to the incision 7) May be, but is preferably an acute angle since the first peeling of the protective film 5 is most important for preventing peeling of the first adhesive layer 2 and the chassis 6. Specifically, it is 10 degrees-80 degrees, Preferably it is 20 degrees-70 degrees, More preferably, it is 30 degrees-60 degrees. When the incidence angle α becomes an obtuse angle (greater than 90 degrees), the angle β corresponding to the complementary angle of α (= 180 degrees −α) becomes an acute angle. In this case, by changing the pick-up section 8 to a position on the opposite side with respect to the incision 7 (that is, the same side as the angle β), the protective film is made with the acute angle portion β as the starting point. (5) can be peeled off.

(Embodiment 5)

Hereinafter, the ventilation filter which concerns on Embodiment 5 of this invention is demonstrated. 13 and 14 are plan views of the ventilation filter according to Embodiment 5 of the present invention. In Embodiment 1, the protective film 5 has the opening part 5a which communicates with the opening part 4a of the 2nd contact bonding layer 4, and the cutout 7 has the opening of the protective film 5 from the outer peripheral part of the protective film 5 Although the example which leads to the opening part 5a was demonstrated, in this embodiment, the opening part 5a is not formed in the protective film 5 as shown in FIG. When the opening part 5a like Embodiment 1 is formed, peeling of the protective film 5 is more smooth, but the ventilation filter which concerns on Embodiment 5 is advantageous from the viewpoint of protection of the ventilation film 3.

When the opening 5a is not formed in the protective film 5 as shown in FIG. 13, in order to facilitate the peeling of the protective film 5, an incision 7 is shown as shown in FIG. 14A. ) Passes through a position corresponding to the opening 4a of the adhesive layer 4 from the outer peripheral portion of the protective film 5, and preferably reaches to the inside of the opening 4a of the second adhesive layer 4. In addition, as shown in Fig. 14B, the incision 7 preferably has an extension 7a extending in the longitudinal direction of the opening 4a. This is because the protective film 5 is more likely to peel more smoothly along the outer circumference of the second adhesive layer 4 due to the presence of the extension portion 7a.

(Embodiment 6)

Hereinafter, the ventilation filter which concerns on Embodiment 6 of this invention is demonstrated. 15? 17 is a cross-sectional view of the ventilation filter according to Embodiment 6 of the present invention. These represent various variations of the laminated structure of the air filter.

Although it was as described in Embodiment 1, although the 1st adhesive layer 2 can be comprised by a single adhesive layer (for example, acrylic adhesive), as shown in FIG. 15, the adhesion layer 2b / tape base material 2c It is also possible to configure a double-sided adhesive tape having a three-layer structure of the / adhesive layer 2b. Of course, the second adhesive layer 4 can also be composed of a double-sided adhesive tape. Examples of the material of the double-sided adhesive tape are as described in the first embodiment.

In addition, as shown in FIG. 16, between the ventilation film 3 and the protective film 5, the 2nd adhesive layer 4 / spacer 12 (for example, PET, sponge material which consists of a double-sided adhesive tape) ) / The second adhesive layer 4 can be laminated. By inserting one layer of the spacer 12, the distance between the ventilation membrane 3 and the vibration membrane in the electroacoustic transducer can be optimally adjusted.

In addition, as shown in Fig. 17, the second adhesive layer 4 / spacer 12 / adhesive layer 4b, which is composed of a double-sided adhesive tape, is sequentially disposed between the ventilation membrane 3 and the protective film 5 from below. You can also do

(Seventh Embodiment)

Hereinafter, the ventilation filter concerning Embodiment 7 of this invention is demonstrated. 18 is a cross-sectional view of the ventilation filter according to Embodiment 7 of the present invention. As described in Embodiment 1, the ventilation membrane 3 preferably has a strength sufficient to be used alone (in a single layer). However, as shown in FIG. 18, the reinforcement membrane 11 (for example, a nonwoven fabric) is used. , Stretchable fabrics such as woven fabrics and knitted fabrics). There is no restriction | limiting in particular in the lamination order of the reinforcement film 11 and the ventilation film 3, The reinforcement film 11 may be upper side of the ventilation film 3 contrary to the procedure shown in FIG. In addition, the reinforcement film 11 and the ventilation film 3 do not necessarily need to be in close contact, and a separate double-sided adhesive tape (not shown) may be interposed between them. When the double-sided adhesive tape is interposed between the reinforcement film 11 and the ventilation film 3, the deterioration of acoustic characteristics is less compared with the case where the reinforcement film 11 and the ventilation film 3 are in close contact with each other. It is advantageous in that point.

(Embodiment 8)

Hereinafter, the ventilation filter which concerns on Embodiment 8 of this invention is demonstrated. 19? Fig. 22 is a sectional view of a ventilation filter according to Embodiment 8 of the present invention. As shown in FIGS. 20 and 22, the base sheet 1 may be provided with an opening 1a communicating with the opening 2a of the first adhesive layer 2.

19 and 20, the protective film 5 may be provided with an opening 5a communicating with the opening 4a of the second adhesive layer 4. The combination of these is shown in Fig. 19? As shown in Fig. 22, there are four types.

One; Base sheet 1a; Opening
2; First adhesive layer 2a; Opening
2b; Adhesive layer 2c; Tape base
3; Aeration membrane 4; Second adhesive layer
4a; Opening 4b; Adhesive layer
4c; Double-sided adhesive tape base material 5; Protective film
5a; Opening 5b; Extension member
6; Chassis (substrate) 7; incision
7a; Extension 8; Pickup
9; Tabs 10, 10a, 10b; sign
11; Reinforcing film 12; Spacer

Claims (14)

A ventilation filter having a first adhesive layer formed on a base sheet, a ventilation film formed on the first adhesive layer, a second adhesive layer formed on the ventilation film, and a protective film formed on the second adhesive layer,
And said first adhesive layer and said second adhesive layer each have an opening, and said protective film is formed with an incision extending from the outer periphery of said protective film to a substantial position of said opening of said second adhesive layer.
The ventilation filter according to claim 1, wherein an outer circumferential portion of the protective film has a pickup portion not adhered to the second adhesive layer.
3. The ventilation filter according to claim 1 or 2, wherein the protective film has an opening communicating with the opening of the second adhesive layer, and the cutout extends from an outer circumference of the protective film to an opening of the protective film.
The ventilation filter of any one of Claims 1-3 whose thickness of the said protective film is 10 micrometers or more and 150 micrometers or less.
5. The ventilation filter according to claim 3 or 4, wherein a predetermined mark is attached to said pickup portion.
The ventilation filter according to any one of claims 1 to 5, wherein the protective film is colored in chromatic colors.
The ventilation filter according to any one of claims 1 to 6, wherein the base sheet has an opening communicating with the opening of the first adhesive layer.
The ventilation filter according to any one of claims 1 to 7, wherein the ventilation film is a fluororesin film.
The airflow filter according to any one of claims 1 to 7, wherein the airflow membrane is a porous polytetrafluoroethylene membrane.
The ventilation filter of any one of Claims 1-9 in which the liquid repellent was added to the surface of the said ventilation film.
The airflow filter according to any one of claims 1 to 10, wherein the adhesive layer is a double-sided adhesive tape.
On the base sheet, a first adhesive layer having an opening, a ventilation film, a second adhesive layer having an opening, and a protective film are laminated in this order, and the protective film is positioned substantially at the opening of the second adhesive layer from the outer peripheral portion of the protective film. A first step of forming a ventilation filter having an incision leading to the second step, a second step of peeling the base sheet from the ventilation filter, a third step of attaching the ventilation filter to the adherend, and the incision interposed therebetween A fixing method of a ventilation filter, having a fourth step of peeling one side of an outer peripheral portion of a protective film divided into two and peeling the protective film.
13. The method of fixing a ventilation filter according to claim 12, wherein the substrate sheet is peeled off by detaching the other one side portion opposite to the one side portion.
On the base sheet, a first adhesive layer having an opening, a ventilation film, a second adhesive layer having an opening, and a protective film are laminated in this order, and the protective film is positioned substantially at the opening of the second adhesive layer from the outer peripheral portion of the protective film. A first step of forming a ventilation filter having an incision leading to the second step, a second step of peeling the base sheet from the ventilation filter, a third step of attaching the ventilation filter to the chassis, and two of the incisions interposed therebetween A method for manufacturing an electric apparatus, comprising a fourth step of peeling one side of an outer peripheral portion of a protective film divided into pieces and peeling the protective film.
KR1020127016504A 2009-12-01 2010-11-26 Ventilation filter, method for affixing the ventilation filter, and method for manufacturing electrical device KR101812790B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JPJP-P-2009-273901 2009-12-01
JP2009273901A JP4874383B2 (en) 2009-12-01 2009-12-01 A ventilation filter, a method for fixing the ventilation filter, and a method for manufacturing an electric device.
PCT/JP2010/071132 WO2011068079A1 (en) 2009-12-01 2010-11-26 Ventilation filter, method for affixing the ventilation filter, and method for manufacturing electrical device

Publications (2)

Publication Number Publication Date
KR20120101088A true KR20120101088A (en) 2012-09-12
KR101812790B1 KR101812790B1 (en) 2017-12-27

Family

ID=44114926

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020127016504A KR101812790B1 (en) 2009-12-01 2010-11-26 Ventilation filter, method for affixing the ventilation filter, and method for manufacturing electrical device

Country Status (4)

Country Link
JP (1) JP4874383B2 (en)
KR (1) KR101812790B1 (en)
CN (1) CN102740949B (en)
WO (1) WO2011068079A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3065518A1 (en) 2013-10-30 2016-09-07 Nitto Denko Corporation Waterproof ventilation structure and waterproof ventilation member
US10170097B2 (en) 2012-12-11 2019-01-01 Amogreentech Co., Ltd. Waterproof sound transmitting sheet, and method for producing same
KR20210023900A (en) * 2019-08-16 2021-03-04 닛토덴코 가부시키가이샤 Cover member and member supply assembly having the same

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2835164B1 (en) * 2012-04-06 2018-05-16 Nitto Denko Corporation Ventilation filter equipped with adhesive layer endowed with oil repellent properties
JP6118131B2 (en) * 2013-02-25 2017-04-19 日東電工株式会社 Waterproof sound-permeable membrane, sound-permeable member, and electrical equipment
CN103752123B (en) * 2014-02-18 2015-10-28 刘昌锦 A kind of self-cleaning anti-soil formula oil smoke cloud air filtration cleaning equipment
JP6152409B1 (en) * 2015-12-21 2017-06-21 レノボ・シンガポール・プライベート・リミテッド Adhesive member and electronic device
JP6522039B2 (en) * 2017-04-27 2019-05-29 日本ゴア株式会社 Protective film-attached film piece, method of removing protective film of protective film-attached film piece, and method of manufacturing electric device
WO2018235772A1 (en) * 2017-06-21 2018-12-27 シャープ株式会社 Display panel provided with protective film
KR102371576B1 (en) * 2018-10-19 2022-03-04 주식회사 엘지화학 Ventilation filter
JPWO2020196211A1 (en) * 2019-03-26 2020-10-01
JP2021009174A (en) * 2019-06-28 2021-01-28 旭化成株式会社 Wire grid polarizing plate
KR20220032060A (en) * 2019-07-12 2022-03-15 닛토덴코 가부시키가이샤 Protective cover member and sheet for member supply provided therewith
CN110944275A (en) * 2019-12-31 2020-03-31 歌尔股份有限公司 Dustproof structure, microphone packaging structure and electronic equipment

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5828012A (en) * 1996-05-31 1998-10-27 W. L. Gore & Associates, Inc. Protective cover assembly having enhanced acoustical characteristics
JP2001145650A (en) * 1999-11-22 2001-05-29 Nitto Denko Corp Tacky adhesive sheet for body warmer, its housing bag and throw-away body warmer
KR200215779Y1 (en) * 2000-07-25 2001-03-15 신광순 Agricultural House Vinyl Repair Tape
JP2002143624A (en) * 2000-11-14 2002-05-21 Saint-Gobain Norton Kk Air permeable filter and vessel provided with filter
US20030202671A1 (en) * 2002-04-30 2003-10-30 Koninklijke Philips Electronics N.V. Product configuration with a double-side adhesive mounting disc
JP3754660B2 (en) * 2002-06-11 2006-03-15 株式会社カトー精工 Double-sided PSA sheet with release tab and manufacturing method thereof
FR2897820B1 (en) * 2006-02-27 2009-01-16 Bosch Gmbh Robert SERVOFREIN AND MOUNTING METHOD
CN200962695Y (en) * 2006-05-12 2007-10-17 京安股份有限公司 Screen protection paste
WO2009011315A1 (en) * 2007-07-18 2009-01-22 Nitto Denko Corporation Water-proof sound-transmitting membrane, method for production of water-proof sound-transmitting membrane, and electrical appliance using the membrane
JP2009111993A (en) * 2007-10-09 2009-05-21 Nitto Denko Corp Sound passing member uzing waterproof sound passing membrane, and method for manufacturing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10170097B2 (en) 2012-12-11 2019-01-01 Amogreentech Co., Ltd. Waterproof sound transmitting sheet, and method for producing same
EP3065518A1 (en) 2013-10-30 2016-09-07 Nitto Denko Corporation Waterproof ventilation structure and waterproof ventilation member
US10092883B2 (en) 2013-10-30 2018-10-09 Nitto Denko Corporation Waterproof ventilation structure and waterproof ventilation member
KR20200130496A (en) * 2013-10-30 2020-11-18 닛토덴코 가부시키가이샤 Waterproof ventilation structure and waterproof ventilation member
KR20210023900A (en) * 2019-08-16 2021-03-04 닛토덴코 가부시키가이샤 Cover member and member supply assembly having the same

Also Published As

Publication number Publication date
CN102740949A (en) 2012-10-17
WO2011068079A1 (en) 2011-06-09
KR101812790B1 (en) 2017-12-27
JP4874383B2 (en) 2012-02-15
JP2011115687A (en) 2011-06-16
CN102740949B (en) 2015-06-17

Similar Documents

Publication Publication Date Title
KR20120101088A (en) Ventilation filter, method for affixing the ventilation filter, and method for manufacturing electrical device
KR101341227B1 (en) Vent filter and method for manufacturing thereof
KR102296699B1 (en) Water-resistant member, and electronic apparatus provided with water-resistant member
KR101896367B1 (en) Breathable waterproof sheet
US8695812B2 (en) Water-proof sound-transmitting membrane, method for producing water-proof sound-transmitting membrane, and electrical appliance using the membrane
JP4680220B2 (en) Waterproof ventilation filter, waterproof ventilation member and housing
CN109417658B (en) Waterproof sound transmission sheet
CN109195789B (en) Waterproof sound transmission sheet
WO2009154268A1 (en) Acoustic part and method of manufacturing same
KR20140018840A (en) Water-resistant sound transmitting member, production method therefor, and water-resistant sound transmitting member carrier
US9514735B2 (en) Waterproof sound transmitting sheet, and method for producing same
US10170097B2 (en) Waterproof sound transmitting sheet, and method for producing same
KR20140017425A (en) Waterproof film with air permeability for electronic equipment and the electronic equipment using the same
JP6522039B2 (en) Protective film-attached film piece, method of removing protective film of protective film-attached film piece, and method of manufacturing electric device
JP2006231168A (en) Vent filter and enclosure equipped with it
KR20120039507A (en) A filter support
US20220348393A1 (en) Cover member and member supply assembly including same
WO2014021553A1 (en) Air-permeable water resistant film for electronic device and electronic device therefor
KR20200111532A (en) A Double-Sided Adhesive Tape and A Water-Proof Sound-Transmitting Membrane

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant