WO2011068079A1 - 通気フィルター、該通気フィルターの固定方法、および電気装置の製造方法 - Google Patents

通気フィルター、該通気フィルターの固定方法、および電気装置の製造方法 Download PDF

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Publication number
WO2011068079A1
WO2011068079A1 PCT/JP2010/071132 JP2010071132W WO2011068079A1 WO 2011068079 A1 WO2011068079 A1 WO 2011068079A1 JP 2010071132 W JP2010071132 W JP 2010071132W WO 2011068079 A1 WO2011068079 A1 WO 2011068079A1
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WO
WIPO (PCT)
Prior art keywords
protective film
adhesive layer
ventilation filter
opening
ventilation
Prior art date
Application number
PCT/JP2010/071132
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English (en)
French (fr)
Japanese (ja)
Inventor
伸行 大杉
Original Assignee
ジャパンゴアテックス株式会社
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.)
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Application filed by ジャパンゴアテックス株式会社 filed Critical ジャパンゴアテックス株式会社
Priority to CN201080062926.3A priority Critical patent/CN102740949B/zh
Priority to KR1020127016504A priority patent/KR101812790B1/ko
Publication of WO2011068079A1 publication Critical patent/WO2011068079A1/ja

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    • 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

Definitions

  • the present invention relates to a ventilation filter provided with a ventilation film used in an electronic device that requires waterproofness and dustproofness, for example, an electronic device having an acoustic function, a method for fixing the ventilation filter, and a method for manufacturing an electrical device.
  • the method for attaching the ventilation membrane to the housing is as follows. First, a member in which a base sheet, an adhesive material A (for example, a double-sided adhesive tape), a gas permeable membrane, an adhesive material B, and a protective film (peeling sheet) are sequentially laminated is prepared. Next, the laminate (adhesive material A / breathable membrane / adhesive material B / protective film) other than the base material sheet is peeled off from the base material sheet. And a laminated body is affixed on the said sound-transmitting hole part by making the adhesive material A side into the housing
  • an adhesive material A for example, a double-sided adhesive tape
  • Patent Document 1 a method of providing a tab on the protective film is known in order to make it easier to pick up the protective film on the adhesive material.
  • Patent Document 2 a method in which a portion obtained by extending a part of the protective film from the end of the gas permeable membrane is used as a tab, or a method in which a material other than the protective film is attached as a tab.
  • One problem in the technique of picking and peeling off a part of the protective film is that not only the protective film but also the adhesive material A is peeled off from the casing which is the adherend when picking up the protective film. Although peeling can be prevented by lowering the adhesive strength between the adhesive material B and the protective film as compared with the adhesive strength between the adhesive material A and the adherend, the selection range of the material is narrowed.
  • porous PTFE membrane When a porous polytetrafluoroethylene film (hereinafter referred to as “porous PTFE membrane”) is used as the gas permeable membrane, since the porous PTFE membrane is stretched in the horizontal direction of the membrane, the vertical direction of the membrane When the protective film is peeled off, the gas permeable membrane itself may tear in the direction perpendicular to the membrane.
  • an opening is formed in the adhesive material B studied by the present inventor, and a region bonded to the protective film has a frame shape surrounding the periphery of the opening. This is to prevent airflow from being hindered by the adhesive material. Accordingly, an object of the present invention is to provide a shape suitable for preventing peeling of the adhesive material A when the protective film is picked up in a ventilation filter in which the adhesive material B has a frame shape.
  • the present inventors made trial manufactures of protective films having various shapes and repeated the peeling test, and found the following. That is, by forming a cut from the outer peripheral portion of the protective film to the position corresponding to the opening of the adhesive material B, when the protective film is picked and peeled off, the protective film starts with the cut as the adhesive material B. It was ascertained that the peeling of the adhesive material A was prevented without peeling off the adhesive material A without applying a large force above the adhesive material A.
  • the ventilation filter of the present invention that can achieve the above object is: A first adhesive layer formed on the base sheet, a gas permeable film formed on the first adhesive layer, a second adhesive layer formed on the gas permeable film, and the second adhesive A ventilation filter having a protective film formed on the layer, wherein each of the first adhesive layer and the second adhesive layer has an opening, and the protective film has an opening from an outer periphery of the protective film. A notch reaching the position corresponding to the opening of the second adhesive layer is formed.
  • the outer peripheral portion of the protective film has a knob portion that is not bonded to the second adhesive layer.
  • the protective film has an opening communicating with the opening of the second adhesive layer, and the cut line is configured to extend from the outer peripheral portion of the protective film to the opening of the protective film. Is desirable.
  • the thickness of the protective film is preferably 10 ⁇ m or more and 150 ⁇ m or less.
  • the protective film is colored with a chromatic color.
  • the base sheet has an opening communicating with the opening of the first adhesive layer.
  • the ventilation film is a fluororesin film.
  • the ventilation membrane is a porous polytetrafluoroethylene membrane.
  • a liquid repellent agent is added to the surface of the ventilation film.
  • the adhesive layer is preferably a double-sided adhesive tape.
  • the method for fixing the ventilation filter of the present invention that can achieve the above-mentioned object is as follows.
  • a first adhesive layer having an opening, a gas permeable membrane, a second adhesive layer having an opening, and a protective film are sequentially laminated on the base sheet, and the protective film is an outer peripheral portion of the protective film.
  • a first step of forming a ventilation filter having a cut from the first adhesive layer to a position corresponding to the opening of the second adhesive layer, a second step of peeling the base sheet from the ventilation filter, and attaching the ventilation filter A third step of attaching to the body and a fourth step of removing the protective film by pinching one side portion of the outer peripheral portion of the protective film divided into two across the cut.
  • the other side portion opposite to the one side portion is picked and the base sheet is peeled off.
  • the method of manufacturing the electrical device of the present invention that can achieve the above-described object is as follows.
  • a first adhesive layer having an opening, a gas permeable membrane, a second adhesive layer having an opening, and a protective film are sequentially laminated on the base sheet, and the protective film is an outer peripheral portion of the protective film.
  • a fourth step of removing the protective film by picking one side of the outer peripheral portion of the protective film divided into two across the cut.
  • the protective film since a cut is formed from the outer peripheral portion of the protective film to the position corresponding to the opening of the second adhesive layer, the protective film starts from the cut along the periphery of the opening of the second adhesive layer. It peels off in order. Therefore, a large force is not applied to the first adhesive layer, and peeling of the first adhesive layer is prevented.
  • FIG. 1 It is a bird's-eye view of the ventilation filter in Embodiment 1 of this invention. It is a bird's-eye view which shows the state with which the ventilation filter in Embodiment 1 of this invention was mounted
  • A)-(c) is a bird's-eye view which shows a mode that the protective film of the ventilation
  • D)-(f) is a bird's-eye view which shows a mode that the protective film of a ventilation filter is peeled in order following FIG.
  • FIG. 3 is a cross-sectional view of the ventilation filter in the first embodiment.
  • 6 is a cross-sectional view of a ventilation filter according to Embodiment 3.
  • FIG. It is a top view of the ventilation filter in Embodiment 4 of this invention.
  • (A), (b) is a top view of the other ventilation filter in Embodiment 5 of this invention. It is sectional drawing of the ventilation filter in Embodiment 6 of this invention. It is sectional drawing of the other ventilation filter in Embodiment 6 of this invention. It is sectional drawing of the other ventilation filter in Embodiment 6 of this invention. It is sectional drawing of the other ventilation filter in Embodiment 6 of this invention. It is sectional drawing of the ventilation filter in Embodiment 7 of this invention. It is sectional drawing of the ventilation filter in Embodiment 8 of this invention. It is sectional drawing of the other ventilation filter in Embodiment 8 of this invention. It is sectional drawing of the other ventilation filter in Embodiment 8 of this invention. It is sectional drawing of the other ventilation filter in Embodiment 8 of this invention. It is sectional drawing of the other ventilation filter in Embodiment 8 of this invention. It is sectional drawing of the other ventilation filter in Embodiment 8 of this invention. It is sectional drawing of the other ventilation filter in
  • FIG. 1 is a bird's-eye view of a ventilation filter according to Embodiment 1 of the present invention.
  • a first adhesive layer 2, a gas permeable membrane 3, a second adhesive layer 4, and a protective film 5 are sequentially laminated on a base sheet 1 to constitute a gas permeable filter.
  • the first adhesive layer 2 and the second adhesive layer 4 have openings 2a and 4a, respectively (see cross-sectional views of FIGS. 19 to 22).
  • a cut 7 is formed in the protective film 5 from the outer peripheral portion of the protective film 5 to a position corresponding to the opening 4 a of the second adhesive layer 4.
  • FIGS. 3A to 3C are bird's-eye views showing a state in which the protective film of the ventilation filter in Embodiment 1 is peeled off in order.
  • FIG. 3 (a) it is the outer peripheral portion of the protective film 5 and is divided into two parts by a cut 7 (hereinafter, this one side part is referred to as a “pick part 8” (FIG. 5).
  • the other side is described as “Tab 9 (see FIG. 5).”
  • FIG. 3 shows an example using tweezers.
  • “pick” or “pull up” is a process that can be automated.
  • the protective film 5 is formed along the periphery of the second adhesive layer 4 as shown in FIGS. 3 (c), 4 (d), and (e). Are peeled off sequentially. If the protective film 5 reaches the state shown in FIG. 4E, an elastic force is exerted to return the protective film 5 to its original planar shape. Therefore, even if the tweezers are not lifted further, the protective film 5 is the second adhesive layer. Almost (semi-automatically) leave 4 That is, the pulling length by tweezers can be short.
  • one side portion of the outer peripheral portion of the protective film 5 that is a portion where the back surface of the protective film 5 and the second adhesive layer 4 are not bonded and is divided into two by the cut 7.
  • pick part 8 is called upward
  • the protective film 5 is sequentially peeled along the periphery of the second adhesive layer 4. effective. For example, as shown in FIG. 10 to be described later, it is possible to pick up even a portion where the protective film 5 is bonded to the second adhesive layer 4.
  • the first adhesive layer 2 is prevented from being peeled off by forming the cut line 7 from the outer peripheral portion of the protective film 5 to the position corresponding to the opening of the second adhesive layer 4 in the protective film 5.
  • a very effective ventilation filter fixing method is realized.
  • the adherend is the casing 6 constituting the electronic apparatus, an effective method for manufacturing an electric device is realized.
  • the base sheet 1, the first adhesive layer 2, the gas permeable membrane 3, the second adhesive layer 4, and the protective film 5 constituting the ventilation filter will be described in detail.
  • Substrate sheet The substrate sheet 1 in the present 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-like member.
  • the base material of the base material sheet 1 it is preferable to use a PET (polyethylene terephthalate) film having at least one surface or both surfaces treated with a silicone-based release agent.
  • PET polyethylene terephthalate
  • materials other than PET include polyesters such as polybutylene terephthalate, polyolefins such as polypropylene, polyethylene, and polymethylpentene, resin films such as polycarbonate, glassine paper, fine paper, coated paper, impregnated paper, and synthetic paper.
  • metal foils such as paper, aluminum, and stainless steel.
  • the thickness of the base sheet 1 is, for example, 10 to 150 ⁇ m, preferably 50 to 125 ⁇ m.
  • the surface of the substrate may be subjected to corona discharge treatment, plasma treatment, flame plasma treatment or the like, or a primer layer may be provided in order to improve the adhesion to the release agent or the pressure-sensitive adhesive.
  • a primer layer a polymer material (so-called anchor coat agent) such as polyethylene, polypropylene, styrene copolymer, polyester, polyurethane, polyvinyl alcohol, polyethyleneimine, polyacrylate, polymethacrylate, and modified products thereof is used. I can do it.
  • 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, elliptical, rectangular, or polygonal.
  • a method of forming the first and second adhesive layers 2 and 4 having the opening pattern for example, a method by screen printing or a method of transferring an adhesive melt to the base sheet 1 with a gravure pattern roll is available. is there.
  • the first and second adhesive layers 2 and 4 may be formed by layering the adhesive itself, but a double-sided adhesive tape can also be used.
  • Double-sided adhesive tapes include non-woven fabric base double-sided adhesive tapes made of polyethylene nonwoven fabric, polypropylene nonwoven fabric, nylon nonwoven fabric, etc., PET-based double-sided adhesive tape, polyimide-based double-sided adhesive tape, nylon-based double-sided adhesive tape, foam (For example, urethane foam, silicone foam, acrylic foam, polyethylene foam)
  • Various types of substrates such as a base double-sided pressure-sensitive adhesive tape and a base material-less double-sided pressure-sensitive adhesive tape can be used.
  • the adhesion between the second adhesive layer 4 and the protective film is compared with the adhesive strength between the first adhesive layer 2 and the adherend. Lowering the strength is also a preferred form.
  • 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, it is protected by adjusting the formation position and length of the cuts 7. Since the peeling work of only the film 5 is possible, the selectable range of materials is expanded.
  • the adhesive refers to a substance generally used for bonding objects together, and includes an adhesive.
  • Air-permeable membrane As the constituent material of the air-permeable membrane 3, polyethylene, polypropylene, polystyrene, polyimide, etc. can be used, preferably a fluororesin excellent in waterproofness, more preferably a porous PTFE film. Recommended to use. As the microscopic shape of the gas permeable membrane 3, a net shape, a mesh shape, or a porous shape can be used. The porous PTFE membrane is excellent in drip-proofing properties and is suitable for applications in which the inside and outside of an electric device have air permeability while preventing entry of water droplets, oil droplets, and dust.
  • porous PTFE generally has a lower surface energy compared to general-purpose polymer polypropylene (PP) and polyethylene (PE), and the binding between fine molecular chains in the material is weak. Therefore, porous PTFE has a lower strength than other porous polymer membranes.
  • a porous PTFE membrane used for waterproofing of acoustic equipment is configured to be thin in order to improve acoustic characteristics, and therefore the strength in the thickness direction is very low. Therefore, when a porous PTFE membrane is used as the constituent material of the gas permeable membrane 3, if the present invention is applied, the tensile force in the direction perpendicular to the membrane when the protective film 5 is peeled is reduced. It is extremely effective for prevention.
  • a porous PTFE membrane is obtained by removing a molding aid from a molded body of a paste obtained by mixing PTFE fine powder with a molding aid, stretching at a high temperature and a high speed, and further firing if necessary. It is obtained.
  • the nodes folded crystals
  • the fibrils straight-lined drawn by unfolding the folded crystals by stretching to connect the nodes
  • Molecular bundle is oriented in the stretching direction.
  • it has a fibrous structure in which spaces defined between fibrils or between fibrils and nodes become holes.
  • biaxial stretching the fibrils spread radially, the nodes connecting the fibrils are scattered in islands, and a cobweb-like fibrous structure in which many spaces defined by the fibrils and the nodes exist. ing.
  • the gas permeable membrane 3 may be a uniaxially stretched porous PTFE membrane or a biaxially stretched porous PTFE membrane.
  • the gas permeable membrane 3 is preferably strong enough to be used alone (single layer), but may be used by being laminated with a stretchable breathable reinforcing layer such as a nonwoven fabric, a net such as a woven fabric or a knitted fabric. Good.
  • the gas permeable membrane 3 As the physical characteristics of the gas permeable membrane 3, it is desirable to have a water pressure resistance of 1 kPa or more, more preferably 10 kPa or more, and an air permeability (JIS P 8117) of 1000 seconds or less, more preferably 100 seconds or less.
  • JIS P 8117 air permeability
  • the gas permeable membrane 3 is preferably provided with liquid repellency on the inner surfaces of the pores.
  • various contaminants such as body fat, machine oil, and water droplets can be prevented from penetrating or being retained in the pores of the gas permeable membrane 3. These contaminants reduce the trapping characteristics and ventilation characteristics of the gas permeable membrane 3 and cause the function of the gas permeable membrane to be impaired.
  • liquid repellent includes “water repellent”, “oil repellent”, “water repellent”, and the like.
  • water- and oil-repellent polymer will be described as an example.
  • water / oil repellent polymer a polymer having a fluorine-containing side chain can be used. Details of the water- and oil-repellent polymer and the method of combining it with a porous PTFE membrane are disclosed in WO94 / 22928.
  • the air-permeable membrane 3 can be provided with various functions by adding a hydrophilic material, a conductive material, a coloring material, an antistatic material, an antibacterial material, and the like. it can.
  • the protective film 5 protects the gas permeable membrane 3 during storage or transportation, and as the material, a paper-released product or a resin film is preferably used.
  • the material of the resin film is not particularly limited, but polyolefin resins such as PE and PP; polyester resins such as PET; In addition, the resin film may be subjected to a release treatment such as coating the resin film surface with a silicone resin or the like.
  • the thickness of the protective film is not particularly limited, but if it is too thin, the protective function is not achieved, so that the thickness is 10 ⁇ m or more, preferably 50 ⁇ m or more.
  • the protective film 5 can be easily peeled off simply by pulling the protective film 5 slightly upward as described above by giving the protective film 5 an appropriate elastic force.
  • the thickness of the protective film 5 is 10 ⁇ m or more, preferably 50 ⁇ m or more.
  • the protective film 5 is 150 ⁇ m or less, preferably 125 ⁇ m or less. It is desirable.
  • the knob 8 is configured not to adhere to the second adhesive layer 4.
  • the outer edge of the protective film 5 may be formed so as to extend from the outer edge of the second adhesive layer 4, and conversely, the outer edge of the second adhesive layer 4 is formed as the protective film. You may form so that it may be depressed rather than the outer edge of 5. Thereby, the work which picks up and peels off protective film 5 becomes efficient.
  • the outer peripheral portion of the protective film 5 is provided with the knob 8 on one side with a notch 7 interposed therebetween, and the tab not bonded to the second adhesive layer 4 on the other side. 9 may be provided.
  • the protective film 5 is used for positioning for peeling off the ventilation filter from the base sheet 1 during conveyance, or for positioning when attaching the ventilation filter to the adherend.
  • the tab 9 may be provided with a circular hole or an oval hole as shown in FIG.
  • the hole may be a rectangle (not shown) such as a rectangle or a square, or a plurality of holes may be provided in one tab 9.
  • FIG. 5 to 8 show plan views of the ventilation filter according to the second embodiment of the present invention, and show various variations of the signs attached to the protective film 5.
  • FIG. 5 to 8 show plan views of the ventilation filter according to the second embodiment of the present invention, and show various variations of the signs attached to the protective film 5.
  • a transparent material is often used for the protective film 5 of the ventilation filter of the present invention. For this reason, when the protective film 5 is peeled off, it may be difficult to recognize the place (the knob portion 8) where the protective film 5 should be picked. Therefore, in this embodiment, an example in which a protective film 5 (particularly the knob 8) is provided with an optically recognizable marker (for example, a character, a symbol, a pattern, or a color) to facilitate recognition of a place to be picked.
  • an optically recognizable marker for example, a character, a symbol, a pattern, or a color
  • a recognizable circular mark 10 is attached to the knob 8.
  • a label 10b of a number (a letter “2” in a circle) is attached to the knob 8.
  • the tab 10 is provided with a number 10a (a circled letter “1”) 10a because the tab 9 to be grasped when the ventilation filter is mounted on the housing 6 as shown in FIG. This is to make it easy to distinguish the knob 8 from which the protective film 5 is to be picked.
  • the sign 10b can be arranged on the opposite side of the cut 7 from the example of FIG. 6 (a), that is, on the same side as the sign 10a.
  • the part to which the mark 10b is attached is the picking part 8, and the effect of the present invention can be achieved by picking up the picking part 8.
  • the tab 9 is gripped when the ventilation filter is mounted on the housing 6, but the gripping position (the mark 10a) should be as far as possible from the cut 7 as shown in FIGS. 6 (a) and 6 (b). desirable. This is because if the tab 9 is gripped at a position close to the cut line 7, only the protective film 5 may be peeled along the cut line 7.
  • a partial range of the knob 8 is colored to be a sign 10.
  • the entire protective film 5 may be colored in order to prevent forgetting of the peeling operation due to oversight of the protective film 5.
  • the range of the knob 8 is preferably colored in a different color.
  • an arrow-shaped marker 10 indicating the position of the cut 7 is attached to a part of the tab 9. This arrow may be attached to the knob 8.
  • Embodiment 3 The ventilation filter according to Embodiment 3 of the present invention will be described below.
  • FIG. 9 is a sectional view of the ventilation filter according to the first embodiment shown in FIG. 1
  • FIG. 10 is a sectional view of the ventilation filter according to the third embodiment.
  • the knob 8 is formed by extending the end of the protective film 5 outward from the end of the second adhesive layer 4. As shown in FIG. 10, an extension member 5 b different from the protective film 5 may be provided to form the knob 8.
  • FIG.11 and FIG.12 is a top view of the ventilation filter concerning Embodiment 4 of this invention, and shows the variation of the form of the cut 7 of the protective film 5.
  • FIG. 1 although the example which formed the notch 7 in the part extended widely in the protective film 5 was demonstrated, the formation position of the notch 7 is not restricted to this, and as shown in FIG. Any location is acceptable.
  • the cut 7 may be formed in a curved shape.
  • the angle is not particularly limited.
  • the intrusion angle ⁇ of the cut 7 with respect to the outer peripheral line of the second adhesive layer 4 may be any number.
  • the beginning of peeling of the protective film 5 is most important, and therefore an acute angle is preferable.
  • it is 10 to 80 degrees, preferably 20 to 70 degrees, more preferably 30 to 60 degrees.
  • the penetration angle ⁇ is an obtuse angle (over 90 degrees)
  • the protective film 5 can be peeled off by changing the knob 8 to a position opposite to the cut 7 (that is, the same side as the angle ⁇ ), starting from the acute angle ⁇ .
  • Embodiment 5 The ventilation filter according to Embodiment 5 of the present invention will be described below.
  • 13 and 14 are plan views of the ventilation filter according to the fifth embodiment of the present invention.
  • the protective film 5 has an opening 5 a that communicates with the opening 4 a of the second adhesive layer 4, and the cut 7 extends from the outer periphery of the protective film 5 to the opening 5 a of the protective film 5.
  • the opening 5a is not provided in the protective film 5 as shown in FIG. If the opening 5a as in the first embodiment is provided, the protective film 5 is peeled off more smoothly, but the ventilation filter according to the fifth embodiment is more advantageous from the viewpoint of protecting the ventilation film 3. is there.
  • the cut 7 is formed in the protective film 5 as shown in FIG. It is desirable to pass through the position corresponding to the opening 4 a of the adhesive layer 4 from the outer periphery of the adhesive layer 4 and reach the inside of the opening 4 a of the second adhesive layer 4. Furthermore, as shown in FIG. 14B, the cut 7 is desirably provided with an extension 7a extending in the longitudinal direction of the opening 4a. This is because the protective film 5 is more easily peeled off along the outer periphery of the second adhesive layer 4 due to the presence of the extension 7a.
  • Embodiment 6 The ventilation filter according to Embodiment 6 of the present invention will be described below.
  • 15 to 17 are sectional views of a ventilation filter according to Embodiment 6 of the present invention. These show various variations of the laminated structure of the ventilation filter.
  • the first adhesive layer 2 may be composed of a single pressure-sensitive adhesive layer (for example, an acrylic pressure-sensitive adhesive), but as shown in FIG. It can be composed of a double-sided pressure-sensitive adhesive tape having a three-layer structure of 2b / tape substrate 2c / adhesive layer 2b.
  • the 2nd contact bonding layer 4 can also be comprised with a double-sided adhesive tape.
  • the material example of the double-sided pressure-sensitive adhesive tape is as described in the first embodiment.
  • the second adhesive layer 4 / spacer 12 (for example, PET, sponge material) / second made of double-sided adhesive tape is provided between the gas permeable membrane 3 and the protective film 5.
  • a laminated structure of the adhesive layer 4 may be used.
  • the space between the gas permeable membrane 3 and the protective film 5 may be a second adhesive layer 4 / spacer 12 / adhesive layer 4b composed of a double-sided adhesive tape in order from the bottom.
  • FIG. 18 is a cross-sectional view of a ventilation filter according to Embodiment 7 of the present invention.
  • the gas permeable membrane 3 has sufficient strength to be used alone (single layer).
  • the reinforcing membrane 11 for example, non-woven fabric, woven fabric, It may be used by laminating with a net such as a knitted fabric).
  • the stacking order of the reinforcing membrane 11 and the gas permeable membrane 3 There is no particular limitation on the stacking order of the reinforcing membrane 11 and the gas permeable membrane 3, and the reinforcing membrane 11 may be on the upper side of the gas permeable membrane 3, contrary to the order shown in FIG. 18.
  • the reinforcing membrane 11 and the gas permeable membrane 3 do not necessarily need to be in close contact with each other, and a double-sided adhesive tape (not shown) may be sandwiched between them.
  • a double-sided pressure-sensitive adhesive tape is sandwiched between the reinforcing film 11 and the gas permeable membrane 3, it is advantageous in that the deterioration of acoustic characteristics is less than that in which the reinforcing film 11 and the gas permeable membrane 3 are in close contact with each other.
  • FIGS. 20 and 22 are sectional views of the ventilation filter according to the eighth embodiment of the present invention.
  • the base sheet 1 may be formed with an opening 1 a communicating with the opening 2 a of the first adhesive layer 2.
  • the protective film 5 may have an opening 5a communicating with the opening 4a of the second adhesive layer 4. There are four combinations of these as shown in FIGS.

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)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)
PCT/JP2010/071132 2009-12-01 2010-11-26 通気フィルター、該通気フィルターの固定方法、および電気装置の製造方法 WO2011068079A1 (ja)

Priority Applications (2)

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CN201080062926.3A CN102740949B (zh) 2009-12-01 2010-11-26 通气过滤器、该通气过滤器的固定方法及电气装置的制造方法
KR1020127016504A KR101812790B1 (ko) 2009-12-01 2010-11-26 통기필터, 그 통기필터의 고정방법, 및 전기장치의 제조방법

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JP2009-273901 2009-12-01
JP2009273901A JP4874383B2 (ja) 2009-12-01 2009-12-01 通気フィルター、該通気フィルターの固定方法、および電気装置の製造方法。

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CN103752123A (zh) * 2014-02-18 2014-04-30 刘昌锦 一种自洁抗污式油烟尘雾空气过滤净化设备
WO2020196211A1 (ja) * 2019-03-26 2020-10-01 日東電工株式会社 通気孔用の部材と、通気孔用の部材を備える電子デバイスの製造方法及び部材供給用テープ
WO2021135122A1 (zh) * 2019-12-31 2021-07-08 潍坊歌尔微电子有限公司 防尘结构、麦克风封装结构以及电子设备

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JP6118131B2 (ja) * 2013-02-25 2017-04-19 日東電工株式会社 防水通音膜、通音部材、及び電気機器
CN105659714B (zh) 2013-10-30 2019-03-15 日东电工株式会社 防水透气结构及防水透气构件
JP6152409B1 (ja) * 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 粘着部材および電子機器
JP6522039B2 (ja) * 2017-04-27 2019-05-29 日本ゴア株式会社 保護フィルム付膜片、保護フィルム付膜片の保護フィルム除去方法および電気装置の製造方法
WO2018235772A1 (ja) * 2017-06-21 2018-12-27 シャープ株式会社 保護フィルム付き表示パネル
KR102371576B1 (ko) * 2018-10-19 2022-03-04 주식회사 엘지화학 통기 필터
JP2021009174A (ja) * 2019-06-28 2021-01-28 旭化成株式会社 ワイヤグリッド偏光板
US11969975B2 (en) 2019-07-12 2024-04-30 Nitto Denko Corporation Protective cover member and member supplying sheet including the same
KR102335705B1 (ko) * 2019-08-16 2021-12-03 닛토덴코 가부시키가이샤 커버 부재 및 이것을 구비하는 부재 공급 어셈블리

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WO2020196211A1 (ja) * 2019-03-26 2020-10-01 日東電工株式会社 通気孔用の部材と、通気孔用の部材を備える電子デバイスの製造方法及び部材供給用テープ
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JP2011115687A (ja) 2011-06-16
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CN102740949A (zh) 2012-10-17
JP4874383B2 (ja) 2012-02-15
KR20120101088A (ko) 2012-09-12

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