WO2023276500A1 - Corps de texture souple - Google Patents

Corps de texture souple Download PDF

Info

Publication number
WO2023276500A1
WO2023276500A1 PCT/JP2022/021471 JP2022021471W WO2023276500A1 WO 2023276500 A1 WO2023276500 A1 WO 2023276500A1 JP 2022021471 W JP2022021471 W JP 2022021471W WO 2023276500 A1 WO2023276500 A1 WO 2023276500A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
soft tactile
lid
filler
liquid
Prior art date
Application number
PCT/JP2022/021471
Other languages
English (en)
Japanese (ja)
Inventor
亜星ウイリアム 川口
慎也 三添
Original Assignee
積水ポリマテック株式会社
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.)
Filing date
Publication date
Application filed by 積水ポリマテック株式会社 filed Critical 積水ポリマテック株式会社
Publication of WO2023276500A1 publication Critical patent/WO2023276500A1/fr

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/06—Protective devices for the ears
    • A61F11/08—Protective devices for the ears internal, e.g. earplugs
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • 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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception

Definitions

  • the present invention relates to a soft tactile body that can be used as a contact member with the human body.
  • a soft tactile body is used as a contact member suitable for contact with the human body.
  • the soft tactile body can be configured as an earpiece, such as an earphone, an earplug, or a hearing aid, which is inserted into the ear canal, or a cushion body such as a cushion pad or cushion.
  • An earpiece is a soft tactile object that is inserted into a wearer's ear canal, and various types are known.
  • Patent Document 1 is an invention aimed at providing earplugs that are easy to remove and have excellent soundproofing and waterproofing effects.
  • the main body of the earplug is made of a material having plasticity and is entirely covered with a plastic film.
  • Patent Document 2 The technique described in Japanese Utility Model Registration No. 3096024 (Patent Document 2) aims to provide an ear tip for a stethoscope that is flexible, fits easily to the shape of the ear, and is comfortable to wear. It is an idea. Since liquid or air is injected into the inside of the peripheral wall of the ear insert portion of the ear tip, it feels soft to the touch.
  • Patent Document 1 a plastic film is used for the outer skin.
  • plastic films are flexible, but are not deformed by elongation. Therefore, it is difficult to deform the plastic film so as to adhere to the inner surface of the ear canal. Therefore, even if an attempt is made to use the material of the main body of the earplug, which has plasticity, for the cushion body, the good tactile sensation of the material is lost due to the plastic film of the outer skin.
  • Patent Document 2 it is difficult to form a hollow cavity inside the portion to be inserted into the ear, and liquid is injected into this cavity.
  • One aspect of the present disclosure is a soft tactile body in which a filler is enclosed in a container body, wherein the filler is a liquid mixture containing a liquid diene-based polymer, a silicone compound having a hydrosilyl group, and a catalyst. It is a gel-like crosslinked polymer of the composition. According to one aspect of the present disclosure, the gel-like crosslinked polymer does not bleed to the outside of the coating made of the rubbery elastic membrane. Therefore, the soft tactile body is less likely to change over time.
  • the liquid diene-based polymer includes a skeleton of polybutadiene, polyisoprene, chloroprene, or block or random copolymers thereof. Since the liquid diene-based polymer contains any skeleton of polybutadiene, polyisoprene, chloroprene, or a block or random copolymer thereof, it reacts and cures with a silicone compound having a hydrosilyl group to form a gel-like crosslinked polymer. can be obtained.
  • the liquid diene-based polymer has a viscosity at 30°C of 1 to 500 Pa ⁇ s. Since the viscosity of the liquid diene polymer is 1 to 500 Pa ⁇ s, the viscosity of the liquid mixture composition can be kept low, and it is easy to pour into the container body. Therefore, it is easy to manufacture a soft tactile material.
  • the content of the silicone compound having a hydrosilyl group is 0.5 to 14 parts by mass with respect to 100 parts by mass of the liquid diene polymer. Since the content of the hydrosilyl group-containing silicone compound is 0.5 to 14 parts by mass with respect to 100 parts by mass of the liquid diene polymer, a soft tactile body with excellent tactile sensation can be obtained.
  • the crosslinked polymer has a penetration of 60 or more based on JISK2207:1996. Since the crosslinked polymer has a penetration of 60 or more based on JISK2207:1996, the container-shaped main body containing the crosslinked polymer as a filler has appropriate deformability, flexibility, and resilience, and is excellent in tactile sensation.
  • the internal space of the container body is filled with the filler by 50 to 100% by volume. Since the filling material fills 50 to 100% by volume of the inner space of the container body, it is possible to maintain an appropriate balance between the flexibility of the rubber-like elastic film of the container-like substrate and the filling material, and the feeling of touch is improved. Are better. If the one mode is an earpiece, it is in close contact with the ear and comfortable to wear. If the one aspect is a cushion body, it is comfortable even when it touches the body.
  • the container body includes a container-shaped base made of a rubber-like elastic film and having an opening at one end, and a lid that liquid-tightly seals the opening. Therefore, the container-like main body can be easily manufactured by fixing the container-like substrate and the lid.
  • the container-shaped substrate is made of a rubber-like elastic film
  • the filler enclosed in the container-shaped body is a liquid mixture composition containing a liquid diene-based polymer, a silicone compound having a hydrosilyl group, and a catalyst. It is a molecule and can be deformed at room temperature. For this reason, the soft tactile body is excellent in tactile sensation, and if the above aspect is an earpiece, it can be flexibly deformed along the shape of the ear hole and worn in the ear. It can change shape by transforming into
  • the container-shaped substrate has a hardness of 5 to 30 using a type A durometer based on JISK6253-3:2012 (JIS-A hardness).
  • a type A durometer based on JISK6253-3:2012 JIS-A hardness
  • the container-like substrate can be brought into close contact with the pressed object by deforming following the shape pressed from the outside. Therefore, if the above aspect is an earpiece, the container-shaped base body can be brought into close contact along the inner surface of the ear canal. If the one aspect is a cushion body, the container-like substrate can be brought into close contact along the body.
  • the container-shaped substrate is hollow annular
  • the lid has an annular plate shape
  • the container body has a rigid cylindrical portion on the inner peripheral portion of the container-shaped body or the lid.
  • the container-like substrate has a hollow annular shape, it can be a soft tactile body having a through hole in the central portion. Therefore, an earpiece suitable for use as an earphone can be obtained, and a cushion pad or the like suitable for use as goggles applied around the eyes can be obtained.
  • the container-like main body has a configuration in which the annular plate-shaped lid body is provided on the hollow annular container-like base body, it can have a simple configuration of at least a two-piece structure.
  • the soft tactile body is either an earpiece or a cushion body. Since the soft tactile body is an earpiece, the earpiece is comfortable to wear on the ear. Further, since the soft tactile body is a cushion body, the cushion body can give a comfortable touch to the body.
  • One aspect of the present disclosure is a method for producing a soft tactile body in which a filler is enclosed in a container body, comprising a liquid mixture composition containing a liquid diene-based polymer, a silicone compound having a hydrosilyl group, and a catalyst. is prepared, and the liquid mixture composition is injected into the inner space of the container body, heated, and the liquid mixture composition is reactively cured to obtain the gel-like filler.
  • the filling material can be injected into the container-like substrate by injecting the liquid mixture composition, which facilitates production. Therefore, the manufacturing unit cost can be reduced, and the yield can be improved.
  • One aspect of the present disclosure is a method for producing a soft tactile body, wherein the temperature at which the liquid mixture composition is reactively cured by heating is 50 to 200°C. If the temperature is lower than 50°C, the reaction time will be long and the production efficiency will be lowered. If the temperature is higher than 200° C., autoxidative deterioration tends to occur. When the temperature is 50 to 200° C., the cross-linking reaction can proceed rapidly and auto-oxidative deterioration can be prevented.
  • One aspect of the present disclosure is a method for manufacturing a soft tactile body, wherein the soft tactile body is either an earpiece or a cushion body. Since the soft tactile body is either an earpiece or a cushion body, the earpiece or the cushion can be easily manufactured.
  • a soft tactile body with excellent tactile sensation can be realized. Moreover, according to one aspect of the present disclosure, a soft tactile body having excellent tactile sensation can be easily manufactured.
  • FIG. 1A is a bottom view and FIG. 1B is a front view of the earpiece of the first embodiment.
  • FIG. 1B is a sectional view taken along line II-II of FIG. 1A;
  • FIG. 2 is an explanatory diagram illustrating a method of manufacturing the earpiece of FIG. 1;
  • FIG. 2 is a cross-sectional view of the earpiece of Modification 1, corresponding to FIG.
  • FIG. 2 is a cross-sectional view of the earpiece of Modification 2, corresponding to FIG. 2 equivalent cross-sectional view of the earpiece of Modified Example 3.
  • FIG. 8A is a front view
  • FIG. 8B is a cross-sectional view corresponding to FIG.
  • FIG. Fig. 10A is a front view
  • Fig. 10B is a sectional view corresponding to Fig. 1B of Fig. 1
  • Fig. 10C is a left side view of the cushion body of Modification 2.
  • Figs. It is a schematic diagram of a load tester.
  • the first embodiment is an earpiece that is one aspect of the present disclosure.
  • FIG. 1 is a bottom view and a front view of an earpiece 10a
  • FIG. 2 is a sectional view.
  • the earpiece 10 a includes an earpiece body 12 and a filler 15 .
  • the earpiece main body 12 includes a container-shaped base body 13 and a lid body 14 .
  • a filler material 15 is enclosed within the earpiece body 12 .
  • the inner peripheral wall 13b which serves as the “inner peripheral portion” of the container-shaped substrate 13, is provided with a hard cylindrical portion 16.
  • the earpiece main body 12 is the container main body composed of the container-shaped base 13 and the lid 14 .
  • the container-shaped substrate 13 is made of a container-shaped rubber-like elastic film. Specifically, the container-like substrate 13 is made of a hollow container-like rubber-like elastic membrane having an opening 13a. An annular cover 14, which will be described later, is fixed to the annular opening 13a.
  • the earpiece main body 12 is formed by sealing the opening 13a with the cover 14 .
  • the earpiece main body 12 has an annular shape with a hole in the center when viewed from above in FIG. 1A so that the through hole 11 is formed in the center of the earpiece 10a. A more specific shape thereof is an annular shape.
  • the lid 14 side has a rectangular shape with corners, whereas the side opposite to the lid 14 has a rounded shape (curved shape).
  • the end of the container-shaped base 13 opposite to the lid 14 has an auricle insertion side end 13d to be inserted into the auricle.
  • the auricle insertion side end portion 13d has an outer curved portion 13d1 curved from the outer peripheral wall 13c of the container-shaped base 13 to the tip.
  • the auricle insertion side end portion 13d has an inner peripheral side curved portion 13d2 that is curved from the inner peripheral wall 13b of the container-shaped base 13 to the tip. Since it has the outer curved portion 13d1, it can be easily inserted into the ear canal. In addition, since the outlet side of the through-hole 11 spreads like a trumpet due to the inner curved portion 13d2, the sound passing through the through-hole 11 easily spreads into the ear.
  • the shape of the container-shaped substrate 13 on the side opposite to the lid 14 may be an overall rounded shape such as a tube with a circular cross section, a bellows shape having a constriction, or a tip end. It can also have a shape that tapers toward the side.
  • the opening 13a which serves as the "fixed end” to the lid 14 and the fixing surface, is formed as a single plane (flat surface) without irregularities so that it can be easily adhered to the flat plate-shaped lid 14. preferably.
  • the opening 13a of the inner peripheral wall 13b and the opening 13a of the outer peripheral wall 13c of the container-shaped substrate 13 can be formed as planes of different heights. Further, since the rubber-like elastic film forming the container-shaped substrate 13 has a small vertical cross-sectional area, if the cross-section is used as the opening 13a as it is, the adhesive area with the lid 14 becomes small and the fixing force becomes poor. .
  • the thickness of the rubber-like elastic film is gradually increased toward the opening 13a, and the length (length t1 in FIG. 3) along the radial direction of the lid 14 at the opening 13a forms the container-like substrate 13. It is longer than the relevant length of the cross section at the average thickness portion of the rubber-like elastic membrane. That is, the length t1 along the radial direction of the lid 14 is longer than the length of the intermediate portion of the outer peripheral wall 13c of the container-shaped base 13 (length t2 in FIG. 3).
  • the upper end side of the inner peripheral wall 13b of the earpiece 10a is not wide.
  • the opening 13a on the upper end side of the inner peripheral wall 13b is also wide like the opening 13a on the upper end side of the outer peripheral wall 13c, it is preferable in that the fixing area with the lid body 14 is widened and the fixing force can be increased. .
  • the container-shaped substrate 13 can be stretched and deformed freely, and preferably has high flexibility and stretchability. Therefore, the container-like substrate 13 is formed of a rubber-like elastic film.
  • a rubber-like elastic body such as thermoplastic elastomer or thermosetting rubber can be used.
  • thermoplastic elastomers include styrene-based elastomers, olefin-based elastomers, polyester-based elastomers, urethane-based elastomers, and polyamide-based elastomers.
  • thermosetting rubber examples include styrene rubber, butadiene rubber, isoprene rubber, nitrile rubber, butyl rubber, chloroprene rubber, ethylene propylene rubber, silicone rubber, acrylic rubber, urethane rubber, and fluororubber.
  • a material that swells and permeates little with respect to the enclosed filler 15 and has low gas permeability to air is preferable.
  • silicone rubber has a small permanent set against compression and tension, is non-adhesive, and has a good surface texture. Moreover, it is preferable in that it is possible to have low hardness and low distortion.
  • the hardness of the rubber-like elastic body forming the container-shaped substrate 13 is preferably in a low hardness range of JIS-A hardness of about 5 to 30, more preferably 10 to 20. Further, it is preferable that the elongation is 200% or more. If the hardness is lower than A hardness of 5, the strength of the rubber-like elastic film may be weakened and easily broken. If the hardness is higher than A hardness 30, it may be difficult to obtain the soft feel of the rubber-like elastic film. If the elongation of the rubber-like elastic body is less than 200%, the possibility that the earpiece 10a will be easily damaged when the earpiece 10a is deformed increases.
  • the JIS-A hardness is a value measured using a type A durometer based on JISK6253-3:2012. Elongation is a measured value (elongation at break) based on JISK6251:2017.
  • the thickness of the rubber-like elastic film of the container-shaped substrate 13 is preferably in the range of 0.1 mm to 2 mm. This is because if the thickness is less than 0.1 mm, it is likely to break, and if the thickness is greater than 2 mm, the properties of the filling material 15 filled inside are difficult to transmit to the outside.
  • the lid 14 is a member that closes the opening 13 a of the container-shaped base 13 and encloses the filler 15 .
  • the lid 14 is preferably formed in a plate shape from the viewpoint of ease of manufacture.
  • the lid 14 is formed as an annular plate having a hole 14a corresponding to the inner peripheral wall 13b of the container-shaped base 13. As shown in FIG. A more specific shape thereof is an annular shape.
  • the lid body 14 is arranged on the central side of the lid body accordingly. and the outer peripheral side may be formed on plate surfaces having different heights.
  • a material similar to that of the container-shaped base 13 can be used as the material forming the lid 14 .
  • the term "similar material” includes the case where both the container-shaped base 13 and the lid body 14 are made of the same material (for example, silicone rubber) and the case where they are made of the same kind of material.
  • the same kind of material means that when the container-shaped substrate 13 is made of one kind of silicone rubber and the lid 14 is made of another kind of silicone rubber, the container-shaped substrate 13 is made of silicone rubber and the lid 14 is made of butyl rubber.
  • the same kind of material means that when the container-shaped substrate 13 is made of one kind of silicone rubber and the lid 14 is made of another kind of silicone rubber, the container-shaped substrate 13 is made of silicone rubber and the lid 14 is made of butyl rubber.
  • lid body 14 and the container-shaped base body 13 are made of the same material, it is preferable in that an adhesive that easily adheres to both the container-shaped base body 13 and the lid body 14 can be easily selected. It is also preferable in that the earpiece 10a as a whole can provide the same tactile sensation.
  • a material different from that of the container-shaped base 13 can be used for the lid 14 .
  • the container-like substrate 13 is a rubber-like elastic film
  • the lid 14 is a resin film or resin plate.
  • the use of a resin film is preferable in that the load is low, the burden on the ears is small, and the manufacturing cost can be suppressed.
  • the hard cylindrical portion 16 is a cylindrical portion made of a hard material that is fixed to the inner periphery of the container-shaped base 13 or the lid 14 .
  • the container-like substrate 13 is made of a harder material than the container-like substrate 13, thereby preventing excessive deformation of the container-like substrate 13, securing the through holes 11 through which sound passes, and furthermore, being made of a hard material. By doing so, it is possible to suppress sound absorption and efficiently transmit sound into the ear.
  • the end of the hard cylindrical portion 16 on the side opposite to the lid 14 is positioned inside the tip of the container-shaped base 13 to prevent the hard cylindrical portion 16 from hitting the ear and also The tip of the shaped substrate 13 is freely deformable.
  • the end of the hard cylindrical portion 16 on the side of the lid 14 extends to the inner peripheral wall 14 b of the lid 14 and is formed so that the end of the hard cylindrical portion 16 is flush with the surface of the lid 14 . ing.
  • the opening 13a of the container-shaped base 13 on the inner peripheral wall 13b side does not need to be thick.
  • the fixing force between the rigid cylindrical portion 16 provided on the container-shaped base 13 side and the rigid cylindrical portion 16 provided on the lid 14 side is increased, and the inner peripheral wall 13b of the container-shaped base 13 and the lid are increased. This is because it is possible to compensate for the weak adhesive force with 14 . Therefore, a wide opening can be provided in the container-like substrate 13, and the filling material 15 can be easily injected into the container-like substrate 13 during the manufacturing process.
  • the hard cylindrical portion 16 has the function of keeping the opening of the container-shaped base 13 wide so that the inner peripheral wall 13b does not lose its shape.
  • the container-shaped substrate 13 is devised so that the filling material 15 can be easily injected.
  • the end portion of the rigid cylindrical portion 16 on the lid body 14 side is fixed to the lid body 14 and functions as a "fixed end portion". Since the lid body 14 continuously seals the lid-side end of the hard tubular portion 16 and the opening 13a of the container-shaped substrate 13, the lid 14 can be fixed to the container-shaped substrate 13, thereby preventing liquid leakage. can be reliably prevented.
  • a hard resin can be used as the material for the hard tubular portion 16, and a material that is excellent in mechanical strength, heat resistance, durability, dimensional accuracy, reliability, etc., and is lightweight and easy to work is preferably used.
  • Such hard resins include polypropylene resin, polyethylene resin, polyvinyl chloride resin, polystyrene resin, acrylonitrile-styrene-acrylate resin, acrylonitrile-butadiene-styrene resin, polyamide resin, polyacetal resin, polycarbonate resin, polyethylene terephthalate resin, polybutylene terephthalate.
  • Thermoplastic resins such as resins, polyphenylene oxide resins, polyphenylene ether resins, polyphenylene sulfide resins, polyurethane resins, liquid crystal polymers, or composite resins thereof can be used.
  • Epoxy resin, urethane resin, or the like can be used as the thermosetting resin. Also, if a hard resin having impact absorption is used, the cushioning effect of the member can be improved.
  • a liquid material, a viscous material, a gel material, or the like that can be deformed at room temperature (25°C) can be used. Since the filling material 15 is a liquid material, a viscous material, a gel material, or the like that can be deformed at room temperature, it is softer and more flexible than a solid material or a foam that is crosslinked and polymerized, and has good conformability to the ear. There is little wearing feeling to attach to ear. In addition, by filling the filler 15, it is easier to cut off external sounds than in the case where the gap is filled with nothing.
  • Examples of the material of the filler 15 include silicone grease, silicone gel, and silicone oil. found. Therefore, we developed a low-hardness gel-like crosslinked polymer that does not exude oil components, and developed a gel-like polymer using a liquid mixture composition containing a liquid diene polymer, a silicone compound having a hydrosilyl group, and a catalyst. It has been found that a crosslinked polymer of The composition of this crosslinked polymer will be described below.
  • a liquid diene-based polymer is a diene-based polymer that is liquid at room temperature.
  • Liquid diene polymers include diene polymers or copolymers composed of butadiene, styrene, isoprene, etc. and their derivatives, and copolymers of diene monomers and ⁇ -olefinic addition polymerizable monomers. Examples include styrene-butadiene copolymers, butadiene polymers, butadiene-isoprene copolymers, butadiene-acrylonitrile copolymers (nitrile rubber), isoprene polymers, styrene-isoprene copolymers, etc., all of which are liquid.
  • the liquid diene-based polymer preferably has a vinyl group in the main chain and/or the side chain for cross-linking, and a repeating unit introduced into a part of the polymer by 1,2-addition polymerization of butadiene. It is more preferable to have a 1,2-vinyl group of
  • the viscosity range of the liquid diene-based polymer at 30°C is preferably 1 to 800 Pa ⁇ s, more preferably 1 to 500 Pa ⁇ s, still more preferably 1 to 350 Pa ⁇ s. On the other hand, if it exceeds 1000 Pa ⁇ s, it is difficult to handle. By using a liquid diene-based polymer having a viscosity within an appropriate range, the obtained filler 15 has a favorable penetration. On the other hand, when it is lower than 1 Pa ⁇ s, a suitable rebound cannot be obtained and the touch is not good, and when it is higher than 800 Pa ⁇ s, the touch is too hard, which is not preferable.
  • the viscosity is in the range of 1 to 500 Pa ⁇ s, the feel is good, and when the viscosity is in the range of 1 to 350 Pa ⁇ s, the feel is even better.
  • the viscosity was measured using a rotational viscometer (BROOKFIELD rotational viscometer, DV-E) by setting the rotational speed of the spindle (SC4-14) to 5 rpm. Values without temperature are measured at 30°C.
  • a silicone having a hydrosilyl group is a silicone having two or more hydrosilyl groups in one molecule at both ends or side chains of the molecular chain, and includes polymethylhydrosiloxane, polyethylhydrosiloxane, and dimethylsiloxane-methylhydrosiloxane copolymer. , methylhydrosiloxane-phenylmethylsiloxane copolymer, diphenylsiloxane-phenylhydrosiloxane copolymer, methylhydrosiloxane-octylmethylsiloxane copolymer, and the like.
  • the catalyst is used for the addition reaction between the liquid diene polymer and the silicone having a hydrosilyl group, and examples of such catalysts include platinum, rhodium, palladium, ruthenium, and other platinum metal catalysts. .
  • platinum-based catalysts it is preferable to use chloroplatinic acid such as hexachloroplatinic acid, alcohol-modified products thereof, and vinylsiloxane complexes of platinum from the viewpoint of speeding up the hydrosilylation reaction.
  • platinum/cyclovinylmethylsiloxane complex platinum/carbonylcyclovinylmethylsiloxane complex, platinum/divinyltetramethyldisiloxane complex, platinum/tetravinylsilane complex, platinum/carbonylvinylmethyl complex platinum/octylaldehyde complex, platinum/octanol complex etc.
  • the gel-like filler 15 obtained by cross-linking and curing the liquid mixture composition containing the liquid diene-based polymer, the silicone compound having the hydrosilyl group, and the catalyst causes the liquid component to bleed to the outside of the container body. I have nothing to do. In addition, since it is gel-like, there is repulsion against pressure, which is different from the state in which deformation is merely caused by pressure.
  • the filler 15 contains a reaction retarder, an antioxidant, and other additives for adjusting the viscosity, sound insulation, vibration damping, etc., within the range that does not impair the deformable property at room temperature. can be added. Alternatively, fine powder such as silica or resin powder (polyethylene, etc.) can be included. Incorporation of such a material makes it difficult for sound to pass through the filling material 15, thereby improving sound insulation and damping properties that prevent noise from being taken in from the outside.
  • the gel-like crosslinked polymer used as the filler 15 preferably has a penetration of 60 or more, more preferably in the range of 100 to 500. If the penetration exceeds 500, the deformability and flexibility become too high, and the inner space 12a containing the filling material 15 has an excessively high resilience, similar to the case where the filling material 15 is hollow. A feeling of wearing increases. In addition, if the container-shaped substrate 13 were to break, it would easily scatter to the outside. On the other hand, if the penetration is less than 100, the deformability and flexibility may be deteriorated, and softness may not be obtained, resulting in poor wearing comfort. Within the preferable range of penetration, the wearing feeling of wearing the ear is suppressed, and the sense of discomfort is reduced. Penetration is a value measured at 25°C based on JISK2207:1996.
  • the earpiece 10a containing the filling material 15 since the earpiece 10a containing the filling material 15 has low resilience, it is easily deformed when inserted into the ear canal, and the shape is maintained during use, and the ear canal is not strongly pressed. However, the feeling of use can be good during long-term use. By filling the filler 15 with respect to the restoring force due to the rubber-like elasticity of the container-shaped substrate 13, generation of the restoring force can be delayed.
  • the 30% compression load of the gel-like crosslinked polymer that is the filler 15 is preferably 90 kPa or less, more preferably 60 kPa or less.
  • it is 90 kPa or less, deformability, flexibility, and resilience are preferable, and when it is 60 kPa or less, these properties become more preferable. If it exceeds 90 kPa, the deformability and flexibility are low, and the tactile sensation deteriorates.
  • the filling material 15 is 50 to 95% by volume, or more than 95% by volume and less than 100% by volume, or 100% by volume of the internal space 12a formed inside the earpiece body 12 and containing the filling material 15. preferably. If the content is less than 50% by volume, it is difficult to obtain the effect of filling the filler 15, as in the case where the internal space 12a is a space. On the other hand, if the amount is more than 100%, the repulsive force when pressed becomes large, resulting in a hard feel and poor softness. By including a considerable amount of bubbles such as air at 50 to 95% by volume, the characteristics of the bubbles can be added.
  • the content is more than 95% by volume and less than 100% by volume
  • air bubbles can enter between the rubber-like elastic membrane and the filler 15, and the properties of both the rubber-like elastic membrane and the filler 15 can be easily reflected. can do.
  • the rubber-like elastic film and the filler 15 can be integrated with each other by eliminating the influence of air bubbles at 100% by volume.
  • the inner or outer surface of the container-like substrate 13 or the lid 14 can be provided with a filler 15 or a low-permeability permeation-preventing film that prevents permeation or permeation of air, or can be surface-treated.
  • a filler 15 or a low-permeability permeation-preventing film that prevents permeation or permeation of air, or can be surface-treated.
  • film formation include film formation using a fluorine-based coating agent, butyl rubber film, and urethane-based material film.
  • surface treatment include known water-repellent finishing and oil-repellent finishing.
  • a method using an adhesive or a pressure-sensitive adhesive, or a method using welding or fusing can be used. Since the fixed portion needs to be flexible even after being fixed, when using an adhesive, it is preferable to use an adhesive that is flexible even after being fixed. Moreover, when using an adhesive or a pressure-sensitive adhesive, it is preferable that these materials are also materials that the filler 15 does not permeate or permeate. In the embodiment in which the container-shaped substrate 13 and the lid body 14, both made of silicone rubber, are fixed with silicone rubber adhesive, liquid leakage does not occur even when the operation of crushing, releasing and returning to the original shape is repeated 5000 times. It is a preferable combination because it can withstand a load test of up to 100 kgf.
  • FIG. 3 is an explanatory diagram of how the container-shaped base 13 and the lid 14 are integrated.
  • the container-shaped substrate 13 and the lid 14 are molded in advance from a rubber-like elastic material into a predetermined shape.
  • hard cylinders 16a and 16b are formed by insert molding of a hard material so that the hard materials forming the hard cylinders 16a and 16b are integrated with the respective inner peripheral walls 13b and 14b.
  • a liquid mixture composition is prepared by mixing a liquid diene-based polymer, a silicone compound having a hydrosilyl group, and a catalyst. do.
  • a material with poor fluidity it is possible to raise the temperature to improve the fluidity.
  • the opening 13a which is the "fixed end" of the container-shaped substrate 13, and the lid 14 are fixed by using an adhesive, a pressure-sensitive adhesive, welding, fusion bonding, or the like.
  • the container-shaped substrate 13 enclosing the filler 15 and the lid 14 are heated to 50 to 200.degree. C., preferably 50 to 150.degree. C., more preferably 80 to 120.degree.
  • the filler 15 bonds the liquid diene-based polymer having a double bond and the silicone having a hydrosilyl group in the liquid mixture composition by a hydrosilylation reaction and is crosslinked and cured.
  • the reaction temperature is lower than 50°C, the reaction time will be long and the production efficiency will be lowered.
  • the reaction temperature is higher than 200° C., autoxidative deterioration tends to occur.
  • a temperature of 50 to 150° C. is more preferable because oxidation deterioration is less likely to occur, and a temperature of 80 to 120° C. is more preferable because oxidation deterioration does not occur while improving production efficiency.
  • the earpiece 10a can be easily manufactured by the above method.
  • the earpiece 10a obtained in this way is flexibly deformable to correspond to the ear canal, can be brought into close contact with the ear, has a good wearing feeling, and is difficult for external sounds to penetrate.
  • the external sound reaching the earpiece 10a is also absorbed by the filler 15, providing good sound insulation.
  • the sound passes through the rigid cylindrical portion 16 whose shape is ensured, making it easy to hear even low frequencies.
  • FIG. 4 shows an earpiece 10b of modification 1-1.
  • the lid-side tubular portion 16b which is a part of the hard tubular portion 16
  • the inner peripheral wall 14b of the lid 14 is shown.
  • Modification 1-1 only the inner peripheral wall 13b of the container-shaped base 13 is provided with the base-side cylindrical portion 16a that serves as the hard cylindrical portion 16.
  • FIG. According to this, it is possible to omit the trouble of integrating the lid-side cylindrical portion 16b at the time of manufacturing the lid 14, and it is possible to suppress the manufacturing cost.
  • the opening 13a of the container-shaped base 13 is wide on the inner peripheral wall 13b side as well. Since the inner peripheral wall 13b side is also wide, the area of the opening 13a can be expanded and the fixing force with the lid body 14 can be increased.
  • FIG. 5 shows an earpiece 10c of modification 1-2.
  • the cover 14 is not positioned on the surface of the hard tubular portion 16 (base-side tubular portion 16a).
  • the end surface of the hard tubular portion 16 is covered with the lid 14, and the lid 14 and the hard tubular portion 16 are fixed together. According to Modification 1-2, the fixing force between the lid 14 and the container-shaped base 13 can be increased.
  • FIG. 6 shows an earpiece 10d of modification 1-3.
  • the earpiece 10d differs from the previous earpieces 10a to 10c in that the rigid tubular portion 16 is not used.
  • the softness of the entire earpiece 10d can be increased.
  • manufacturing is easy because the hard cylindrical portion 16 is not provided.
  • FIG. 7 shows an earpiece 10e of modification 1-4.
  • the earpiece 10e differs from the previous earpieces 10a to 10d in that the hard cylindrical portion 16 is not provided and the through hole 11 is not provided. By not providing the through-hole 11, it can be suitably used for applications such as earplugs.
  • FIG. 8 shows a front view and a cross-sectional view of a cushion body 20a
  • FIG. 9 shows a front view and a cross-sectional view of a cushion body 20b of modification 2-1.
  • the cushion bodies 20a and 20b are collectively referred to as the cushion body 20 as well.
  • the cushion body 20a of the second embodiment is formed of a cushion body 22 composed of a container-shaped base body 23 and a lid body 24, and a filler 25 enclosed in the cushion body 22.
  • the end of the container-shaped base 23 opposite to the lid 24 has a flexible side end 23d that contacts the body.
  • Such a shape is roughly the same as the earpiece 10e shown in FIG. 7, but while the earpiece 10e is large enough to be inserted into the ear, the cushion body 20a is placed on the flexible side end 23d with the lid body 24 placed on the floor. It is a moderate size such as a size that can be lowered. Since the aspect of the present embodiment is a cushion body, the container body composed of the container-shaped base body 23 and the lid body 24 is used as the cushion body 22 .
  • the materials of the container-shaped base body 23 and the lid body 24 in the cushion body 20a and the manufacturing method of the cushion body 20a are the same as the materials and the manufacturing method of the container-shaped base body 13 and the lid body 24 in the earpiece 10a of the first embodiment. .
  • ⁇ Modification 2-1 [Fig. 9]>:
  • the cushion body 20b of modification 2-1 has through holes 21 as shown in FIG.
  • the external shape is generally the same as that of the earpiece 10d of Modified Example 1-3 shown in FIG.
  • the third embodiment is a mode in which the soft tactile body is used as either an earpiece or a cushion body.
  • the soft tactile body described in the embodiments so far has been described as one in which the container-shaped substrate and the lid are integrated. It is characterized in that it consists only of a container-like substrate.
  • FIG. 10 shows a front view, a sectional view and a left side view of the soft tactile body 30. As shown in FIG. As shown in these figures, the soft tactile body 30 has a through hole 31 formed inside a cylindrical shape.
  • the manufacturing method of the soft tactile body 30 does not have a lid, so unlike the soft tactile bodies in the previous embodiments, there is no step of adhering the container-shaped substrate and the lid.
  • the air inside is removed with an injection needle or the like, and then a liquid mixed composition to be the filler 35 is injected and cured.
  • a hole made by an injection needle or the like is closed with an adhesive or the like, or closed with a rubber-like seal.
  • the outer peripheral wall 23c is made of a rubber-like elastic film, and especially if it is made of silicone rubber, the surface feels good on the skin and the inside is filled with a low-hardness gel-like material. Therefore, it has good elasticity to be pushed back and has excellent tactile sensation.
  • the cushion bodies 20a, 20b and the soft tactile body 30 are a face pad attached to goggles, VR goggles, etc., a nose pad, a cushion pad attached to the body contact surface such as a belt, band, strap, etc., and a cushion pad attached to the inner surface of the shoe.
  • Seats, child seats, cushion pads attached to the seat surface, back surface, and head surface of strollers, etc. housing-related or building-related materials such as cushions provided on doorstops and hinges to dampen the sound of door closing, surface decoration, cushioning materials, or sealing around electronic parts such as optical sensors and electrostatic sensors It can be used for a wide variety of purposes such as consumer and industrial use.
  • the cushion bodies 20a and 20b and the soft tactile body 30 used for these applications not only have excellent tactile sensation, but also provide effects such as anti-slipping, cushioning against collisions, and protection.
  • the earpieces shown in the first embodiment and its modifications can be used as cushion bodies with different sizes, and conversely, the cushion bodies shown in the second embodiment and its modifications can be used as cushion bodies with different sizes. You can also use it as an earpiece by changing the .
  • the container body may be a container body in which a container-shaped substrate is closed with a lid, or a container body in which a container-shaped substrate is opened without using a lid depending on the application. This is because the filler is a gel-like cross-linked polymer and therefore does not readily flow out of the container-like substrate.
  • the main body of the container and the filling material can be made transparent or colored by adding a pigment or the like.
  • Samples 1 to 17 were obtained by mixing the materials shown in the following tables as shown in "Composition”.
  • the "composition” shown in the tables indicates parts by mass.
  • the characteristics of each sample described in detail below are shown in the "Properties” column of each table.
  • the liquid mixture composition was cured at 120° C. for 2 hours to obtain gel-like fillers of Samples 1 to 17 having sizes according to the “penetration” and “30% compression load” tests described later. rice field.
  • Sample 1 is liquid polybutadiene (LBR-307, manufactured by Kuraray Co., Ltd.)
  • sample 2 is liquid polybutadiene (LBR-352, manufactured by Kuraray Co., Ltd.)
  • sample 3 is liquid isoprene (LIR-30, manufactured by Kuraray Co., Ltd.)
  • sample 4 is liquid polybutadiene (LBR-307, manufactured by Kuraray Co., Ltd.)
  • sample 5 is liquid isoprene (LIR-50, manufactured by Kuraray Co., Ltd.)
  • sample 5 is liquid polybutadiene (B-1000, manufactured by Nippon Soda Co., Ltd.)
  • sample 6 is liquid polybutadiene (B-2000, manufactured by Nippon Soda Co., Ltd.)
  • sample 7 is liquid polybutadiene (manufactured by Nippon Soda Co., Ltd., B-3000)
  • sample 8 is liquid butadiene (manufactured by Clay Valley Co., Ricon 134)
  • sample 9 is a styrene-butadiene random copolymer (manufactured by Clay Valley Co., Ricon 181)
  • sample 10 is a styrene-butadiene random copolymer (Ricon 184, manufactured by Clay Valley)
  • sample 11 is a styrene-butadiene random copolymer (L-SBR-820, manufactured by Kur
  • Sample 13 is hydrogenated polyisoprene (LIR-290, manufactured by Kuraray Co., Ltd.)
  • sample 14 is a styrene isoprene block polymer (LIR-310, manufactured by Kuraray Co., Ltd.)
  • sample 15 is polyisobutylene (EP- 450A)
  • Sample 16 is a two-liquid mixed curable silicone gel (KE-1052, manufactured by Shin-Etsu Chemical Co., Ltd.)
  • Sample 17 is liquid paraffin (P-260, manufactured by MORESCO).
  • the silicone compound having a hydrosilyl group used in each sample is a hydrogensiloxane compound having an average of 5 hydrosilyl groups in the molecule, and is indicated as "hydrogensiloxane compound" in the table.
  • a platinum catalyst SRX212 manufactured by Dow
  • ethynylcyclohexanol PT88 manufactured by Asahi Kasei Wacker Silicone Co., Ltd.
  • BHT dibutylhydroxytoluene
  • the current of the above circuit is fixed at 1 mA by the constant current source 4, and the resistance change in the load cell 6 accompanying the compression of the test piece 1 and the resistance change in the gauge sensor 7 accompanying the compression of the test piece 1 are data.
  • Each voltage (mV) was read by the logger 5, and the compression load value and compression amount when the test piece 1 was compressed were calculated from these values.
  • each test piece 1 having a thickness of 24 mm was compressed at a speed of 1 mm per minute, and the data logger 5 recorded the values of the load and compression amount over time every 0.5 seconds, and the compression ratio was 30%. was calculated. The measured values are shown in the "30% compression load" column of each table.
  • Oil Bleed The degree of exudation of the liquid component from the earpiece to the outside was evaluated. More specifically, the liquid mixture compositions of Samples 1 to 17 were poured into a silicone rubber container-shaped substrate having a thickness of 1 mm, cured at 120° C. for 2 hours (uncured samples were left as they were), and then cured at room temperature. After leaving for a week, the presence or absence of oil-like gloss on the surface of the container-shaped substrate was visually observed and evaluated, and by observing whether the oil-like gloss could be wiped off with a paper waste, the oil bleeding was confirmed. determined whether or not The presence or absence of oil bleed is shown in the "oil bleed" column of each table.
  • the viscosities of the liquid diene-based polymers were all as low as 500 Pa ⁇ s or less for samples 1 to 12, and those prepared as liquid mixed compositions were able to have viscosities that could be injected into the container body.
  • the viscosity of the liquid diene-based polymer was too high at 1000 Ps ⁇ s or more, and it was difficult to pour into the container main body after forming the liquid mixed composition.
  • the fillers of Samples 1 to 12 all have a penetration of 60 or more, and a 30% compression load of 60 kPa or less. became a thing.
  • the fillers of Samples 13 to 15 had a small penetration of 10 or less, a 30% compressive load of over 90 kPa, and a container-like substrate with low deformability and flexibility.
  • sample 16 is a two-liquid mixed curing type silicone gel, which has a low viscosity and a high penetration of the filler after cross-linking, but has a high affinity for container-shaped substrates made of silicone rubber. Perhaps because of this, the remaining low-molecular-weight silicone component seeped out, causing oil bleeding.
  • sample 17 liquid paraffin was used as a filler in a liquid state, but oil bleed occurred due to exudation from the container-like substrate made of silicone rubber.

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Otolaryngology (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Neurosurgery (AREA)
  • Biophysics (AREA)
  • Psychology (AREA)
  • Medicinal Chemistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Headphones And Earphones (AREA)

Abstract

La présente invention permet d'obtenir un corps de texture souple qui a un bon toucher, tout en étant exempt de lixiviation d'un composant huileux. La présente invention concerne un corps de texture souple (10a) qui est obtenu en ayant une charge (15) scellée dans un corps principal de récipient (12), dans lequel la charge (15) est un polymère réticulé de type gel d'une composition mixte liquide qui contient un polymère diénique liquide, un composé de silicone ayant un groupe hydrosilyle, et un catalyseur.
PCT/JP2022/021471 2021-06-29 2022-05-25 Corps de texture souple WO2023276500A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021107940A JP2024123282A (ja) 2021-06-29 2021-06-29 軟質触感体
JP2021-107940 2021-06-29

Publications (1)

Publication Number Publication Date
WO2023276500A1 true WO2023276500A1 (fr) 2023-01-05

Family

ID=84691262

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/021471 WO2023276500A1 (fr) 2021-06-29 2022-05-25 Corps de texture souple

Country Status (2)

Country Link
JP (1) JP2024123282A (fr)
WO (1) WO2023276500A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008255343A (ja) * 2007-03-12 2008-10-23 Shin Etsu Chem Co Ltd ヒドロシリル化反応制御剤、ヒドロシリル化触媒組成物、及び硬化性組成物
JP2010540721A (ja) * 2007-09-26 2010-12-24 ダウ・コーニング・コーポレイション オルガノポリシロキサン樹脂からのシリコーン有機エラストマーゲル

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008255343A (ja) * 2007-03-12 2008-10-23 Shin Etsu Chem Co Ltd ヒドロシリル化反応制御剤、ヒドロシリル化触媒組成物、及び硬化性組成物
JP2010540721A (ja) * 2007-09-26 2010-12-24 ダウ・コーニング・コーポレイション オルガノポリシロキサン樹脂からのシリコーン有機エラストマーゲル

Also Published As

Publication number Publication date
JP2024123282A (ja) 2024-09-11

Similar Documents

Publication Publication Date Title
JP7277872B2 (ja) イヤーピース
WO2013052881A2 (fr) Coussin en mousse pour casque d'écoute
US20080299339A1 (en) Earguard sealing system i: multi-chamber systems
US20170145272A1 (en) Seal member
HUP0202695A2 (hu) Alacsony feszüléscsökkenésű elasztomer anyagok
CN101293408A (zh) 装饰板、装饰成形体及装饰按键板和装饰板的制造方法
US7654538B2 (en) Gasket
JPH09501069A (ja) 音響的イヤマフ
CN109480354B (zh) 密封件及呼吸界面装置
CN205291800U (zh) 一种复合泡棉基材
WO2023276500A1 (fr) Corps de texture souple
RU2660999C2 (ru) Устанавливаемая нажатием литая ушная заглушка из вспененного материала
JP2011139180A (ja) イヤーチップ、イヤホン及びイヤーチップの製造方法
CN112135991B (zh) 防水构件
TW200300097A (en) Pierceable stopper and method of producing the same
CN112468938A (zh) 发声器及电子产品
JP2010509088A (ja) 立体成型品及びその製造方法並びにその用途
JP2019011431A (ja) 車両用シール部材および車両用電気中継部品
US6672548B1 (en) Cushion
CN110572501A (zh) 一种发声装置以及电子产品
JP3721170B2 (ja) エラストマー部材、およびエラストマー部材の製造方法
Kolpe et al. Chemistry and rheology of otoplastic materials
JP4511866B2 (ja) 栓体の製造方法
JP2000013079A (ja) 電磁波シールド材
JP2022167057A (ja) シール部材

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22832658

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22832658

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP