JP2691990B2 - Method for manufacturing diaphragm for heat-resistant speaker - Google Patents

Method for manufacturing diaphragm for heat-resistant speaker

Info

Publication number
JP2691990B2
JP2691990B2 JP63099784A JP9978488A JP2691990B2 JP 2691990 B2 JP2691990 B2 JP 2691990B2 JP 63099784 A JP63099784 A JP 63099784A JP 9978488 A JP9978488 A JP 9978488A JP 2691990 B2 JP2691990 B2 JP 2691990B2
Authority
JP
Japan
Prior art keywords
fiber
diaphragm
resin
heat
aromatic polyester
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
JP63099784A
Other languages
Japanese (ja)
Other versions
JPH01270491A (en
Inventor
秀一 市川
隆久 佐野
Original Assignee
フオスター電機株式会社
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 フオスター電機株式会社 filed Critical フオスター電機株式会社
Priority to JP63099784A priority Critical patent/JP2691990B2/en
Publication of JPH01270491A publication Critical patent/JPH01270491A/en
Application granted granted Critical
Publication of JP2691990B2 publication Critical patent/JP2691990B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Diaphragms For Electromechanical Transducers (AREA)

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は耐熱性を有するスピーカ用振動板の製造方法
に関する。
The present invention relates to a method of manufacturing a speaker diaphragm having heat resistance.

(従来の技術) 従来、スピーカ用振動板の材料として、いわゆる液晶
ポリマーと称される物質を用いたものが提供されている
が、この場合、射出成形法により製造されていた。
(Prior Art) Conventionally, as a material for a speaker diaphragm, a material using a so-called liquid crystal polymer has been provided, but in this case, it was manufactured by an injection molding method.

(発明が解決しようとする課題) ところが、射出成形法によると射出成形機が大型化す
るばかりでなく、金型に穿設された小径孔の目詰りを排
除するため、度々洗浄しなければならぬ問題があった。
また、材料損失も大きいなどの問題もあった。
(Problems to be Solved by the Invention) However, the injection molding method not only increases the size of the injection molding machine but also requires frequent cleaning in order to eliminate clogging of small diameter holes formed in the mold. There was a problem.
There was also a problem that the material loss was large.

本発明はかかる問題に鑑みなされたもので、その目的
は、射出成形機を使用しないで、しかも耐熱性を向上し
たスピーカ用振動板の製造方法を提供することにある。
The present invention has been made in view of the above problems, and an object thereof is to provide a method for manufacturing a speaker diaphragm without using an injection molding machine and having improved heat resistance.

(課題を解決するための手段) 上記目的を達成するために本発明に係る耐熱性スピー
カ用振動板は、高耐熱、高強度、高弾性率を有する無機
繊維、有機繊維の各々単独、またはこれらの混紡したも
のからなる織布(交織を含む)、不織布(紙状繊維マト
リックスを含む)等の基材1に、メラミン樹脂、フェノ
ール樹脂またはエポキシ樹脂の如き熱硬化性樹脂を含浸
し、かつ振動板形状に加熱成形し、これにフィルム状で
あって振動板形状に形成された熱可塑性液晶高分子であ
る全芳香族ポリエステル樹脂または強化全芳香族ポリエ
ステル樹脂を加熱溶融し、接着して製造することを要旨
としている。
(Means for Solving the Problems) In order to achieve the above object, the heat-resistant speaker diaphragm according to the present invention has high heat resistance, high strength, an inorganic fiber having a high elastic modulus, an organic fiber alone, or these. A base material 1 such as a woven fabric (including a mixed woven fabric) or a non-woven fabric (including a paper-like fiber matrix) made of a blended product of 1) is impregnated with a thermosetting resin such as a melamine resin, a phenol resin or an epoxy resin, and is vibrated. It is manufactured by heat-molding into a plate shape, and then melting and adhering a wholly aromatic polyester resin or a reinforced wholly aromatic polyester resin, which is a film-shaped and diaphragm-shaped thermoplastic liquid crystal polymer, to the film. That is the gist.

(作用) 本発明にかかる耐熱性スピーカ用振動板は叙上のよう
に、高耐熱、高強度および高弾性率を有する基材に、熱
可塑性液晶高分子を加熱溶融し、接着しているので、射
出成形法を使用することがなく、製造が容易で、また、
剛性等の機械的性質が向上するとともに、耐熱性等も向
上している。
(Function) Since the diaphragm for a heat-resistant speaker according to the present invention has the thermoplastic liquid crystal polymer heated and melted and adhered to the base material having high heat resistance, high strength and high elastic modulus as described above. , Easy to manufacture without using injection molding method,
Mechanical properties such as rigidity are improved, and heat resistance is also improved.

第1図は本発明にかかる耐熱性振動板を、いわゆる積
層法によって製造する場合の一実施例である。
FIG. 1 shows an embodiment in which the heat resistant diaphragm according to the present invention is manufactured by a so-called laminating method.

しかして、図中1は基材で、この基材1は高耐熱、高
強度、高弾性率を有する無機繊維および有機繊維の各々
単独、またはこれらの混紡及び交織したる織布、不織布
(紙状繊維マトリックスを含む)等からなっている。
In the figure, reference numeral 1 is a base material, and the base material 1 is made of inorganic fibers and organic fibers having high heat resistance, high strength, and high elastic modulus, respectively, or a woven fabric, a non-woven fabric (paper, etc.) obtained by blending and mixing these fibers. (Including a fiber matrix).

高耐熱、高強度、高弾性率無機繊維としては、例えば
下記のものを用いると好適である。
As the high heat resistant, high strength and high elastic modulus inorganic fibers, for example, the following ones are preferably used.

(1) ガラス繊維 (2) アルミナ繊維 Al2o399%以上 (3) セラミック繊維 Al2o3/slo2系 (4) 炭素繊維 (5) シリカ繊維 sio299%以上 (6) 金属繊維 (7) チタン酸カリウム繊維 (8) ジルコニア繊維 また、高耐熱、高強度、高弾性系有機繊維としては、 (1) 芳香族アラミッド繊維 例えば 1.ポリパラフェニレンテレフタラミド系繊維。(1) Glass fiber (2) Alumina fiber Al 2 o 3 99% or more (3) Ceramic fiber Al 2 o 3 / slo 2 system (4) Carbon fiber (5) Silica fiber sio 2 99% or more (6) Metal fiber (7) Potassium titanate fiber (8) Zirconia fiber Further, as the high heat resistance, high strength and high elasticity organic fiber, (1) aromatic aramid fiber, for example, 1. polyparaphenylene terephthalamide fiber.

PTA 2.ポリメタフェニレンテレフタラミド系繊維。 PTA 2. Polymetaphenylene terephthalamide fiber.

MPIA 3.ポリベンズイミダゾール系繊維。 MPIA 3. Polybenzimidazole fiber.

PBIM 4.ポリエーテルイミド系繊維。 PBIM 4. Polyetherimide fiber.

PEI 5.ポリパラフェレン3.4ジフエニルエーテルテレフタラ
ミド系繊維。
PEI 5. Polyparaphenylene 3.4 Diphenyl ether terephthalamide fiber.

PMPREA 6.ポリパラフェニレンベンズビスチアゾール系繊維。 PMPREA 6. Polyparaphenylene benzbis thiazole fiber.

PBT (2) 芳香族ポリエステル繊維 例えば、 1.ポリアリレート系繊維。 PBT (2) Aromatic polyester fiber For example, 1. Polyarylate fiber.

PAR 2.全芳香族ポリエステル系液晶高分子系。 PAR 2. Liquid crystal polymer based on wholly aromatic polyester.

3.ポリエーテルエーテルケトン液晶高分子。3. Polyether ether ketone liquid crystal polymer.

PEEK (3) 含硫黄有機繊維 例えば、 1.ポリフェニレンサルファイド系繊維 PPS 2.ポリサルフォン系繊維 PS 等が用いられる。 PEEK (3) Sulfur-containing organic fiber For example, 1. Polyphenylene sulfide fiber PPS 2. Polysulfone fiber PS etc. are used.

そして、この基材1は熱硬化性樹脂(メラミン樹脂、
フェノール樹脂、エボキシ樹脂)が含浸され、振動板の
形状に加熱成形され、これを上型2と下型3との間に配
設する。
The base material 1 is a thermosetting resin (melamine resin,
Phenolic resin and epoxy resin) are impregnated and heat-molded into the shape of a diaphragm, which is arranged between the upper mold 2 and the lower mold 3.

また、その上下にはそれぞれ熱可塑性液晶高分子とフ
イルム状であって振動板状に形成したもの、または液晶
高分子フイルムを加熱加圧成形もしくは真空成形してな
るフイルム状振動板4を配置している。このフイルム状
振動板4はマトリックス樹脂としての役割をなすもので
ある。
Further, a film-shaped vibrating plate formed with a thermoplastic liquid crystal polymer, or a film-shaped vibrating plate 4 formed by heat-pressurizing or vacuum-molding a liquid crystal polymer film is disposed above and below the film. ing. The film diaphragm 4 serves as a matrix resin.

熱可塑性液晶高分子としては全芳香族ポリエステル樹
脂を用いると好適である。全芳香族ポリエステル樹脂と
は下記のものである。
It is preferable to use a wholly aromatic polyester resin as the thermoplastic liquid crystal polymer. The wholly aromatic polyester resin is as follows.

A+B+C+D+E+F+G=100% A=B=C=D=E=F=G=0〜100% の組成を持つポリエステル樹脂である。 A polyester resin having a composition of A + B + C + D + E + F + G = 100% A = B = C = D = E = F = G = 0 to 100%.

また、他のマトリックス樹脂として強化全芳香族ポリ
エステル樹脂が用いられる。
Further, a reinforced wholly aromatic polyester resin is used as another matrix resin.

すなわち、強化全芳香族ポリエステル樹脂とは、樹脂
に対して強化剤をして1〜50%添加したものである。強
化剤としては繊維状と無機化合物とがある。
That is, the reinforced wholly aromatic polyester resin is a resin to which 1 to 50% of a reinforcing agent is added. The reinforcing agent includes fibrous and inorganic compounds.

(イ)繊維状強化剤としては、 前記無機繊維及び有機繊維の繊維長0.1〜5m/mのもの
を熱可塑性液晶高分子である全芳香ポリエステル樹脂に
対して1〜50%添付したものである。
(A) As the fibrous reinforcing agent, 1 to 50% of the inorganic fiber and the organic fiber having a fiber length of 0.1 to 5 m / m is attached to the wholly aromatic polyester resin which is a thermoplastic liquid crystal polymer. .

(ロ)無機化合物強化剤としては、 石英 マイカ 黒鉛 チタン酸カリウムウイスカー 石コウ 金属箔(フレーク状) タルク ガラス(粉末、フレーク) 石綿 等を全芳香ポリエステル樹脂に対して1〜50%添加した
ものである。
(B) As an inorganic compound strengthening agent, quartz mica, graphite, potassium titanate whiskers, gypsum, metal foil (flakes), talc glass (powder, flakes), asbestos, etc. are added in an amount of 1 to 50% with respect to the wholly aromatic polyester resin. is there.

しかして、このようなフイルム振動板4を加熱溶融
し、かつ第1図において矢印で示すように、上型2を下
動せしめて加圧して基材1の両面に接着せしめている。
Then, such a film vibrating plate 4 is heated and melted, and as shown by an arrow in FIG. 1, the upper mold 2 is moved downward and pressed to adhere it to both surfaces of the substrate 1.

第2図(a)はこのようにして製造された耐熱性振動
板5を示し、また、同(b)図は要部拡大図で、基材1
の両面にフイルム状振動板4が接着された状態を示す。
FIG. 2 (a) shows the heat-resistant diaphragm 5 manufactured in this way, and FIG. 2 (b) is an enlarged view of the main part of the substrate 1.
2 shows a state in which the film diaphragm 4 is adhered to both surfaces of the.

第3図は本発明の他の実施例であり、この実施例では
基材1の上面側にのみフイルム状振動板4を配置し、上
型2、下型3等を介し基材1の片側にフイルム状振動板
4を接着したことに特徴を有している。
FIG. 3 shows another embodiment of the present invention. In this embodiment, the film diaphragm 4 is arranged only on the upper surface side of the base material 1, and one side of the base material 1 is placed through the upper mold 2 and the lower mold 3. It is characterized in that the film diaphragm 4 is adhered to the.

第4図(a)は製造された振動板、同(b)図は、そ
の要部拡大図を示す。
FIG. 4 (a) is a manufactured diaphragm, and FIG. 4 (b) is an enlarged view of a main part thereof.

このようにして製造された振動板5は、マトリックス
樹脂を単にエポキシ樹脂としたものと比較して下記の点
で性能が優れている。
The diaphragm 5 manufactured in this manner is superior in performance in the following points as compared with a case where the matrix resin is simply an epoxy resin.

(1)曲げ強度 曲げ弾性率の向上 (2)引張り強度 引張り弾性率の向上 (3)タフネスの向上 (4)クリープ性の向上 繊維強化により耐熱クリープ特性は向上する。(1) Bending strength Improvement of flexural modulus (2) Tensile strength Improvement of tensile modulus (3) Improvement of toughness (4) Improvement of creep property Heat-resistant creep property is improved by fiber reinforcement.

(5)耐湿強度の向上 (6)内部損失の向上 液晶高分子の結晶間摩擦の増加による向上 (7)熱変形温度 HDT 150℃以上 ASTM D−648 (8)難燃性 UL−94、V−1以上 (9)耐ハンダ特性良好 260〜280℃−10秒 (10)耐絶縁性が良好 表面抵抗率(ASTMD257) 1×1616Ω 絶縁破壊強さ(ASTMD14) 21KV/mm以上 (カーボン、金属繊維、黒鉛を除く) 特に本発明では耐熱性、難燃性が向上し、かつ高強
度、高弾性率(引張、圧縮)、タフネス、耐ハンダ付け
性に優れている。
(5) Improvement of moisture resistance strength (6) Improvement of internal loss Improvement due to increase in intercrystalline friction of liquid crystal polymer (7) Heat distortion temperature HDT 150 ℃ or more ASTM D-648 (8) Flame retardant UL-94, V -1 or more (9) Good soldering resistance 260 to 280 ℃ -10 seconds (10) Good insulation resistance Surface resistivity (ASTMD257) 1 x 16 16 Ω Dielectric breakdown strength (ASTMD14) 21KV / mm or more (carbon, In particular, the present invention has improved heat resistance and flame retardancy, and is excellent in high strength, high elastic modulus (tensile and compression), toughness, and soldering resistance.

また、表1は振動板性能を示す一覧である。 Table 1 is a list showing the diaphragm performance.

(発明の効果) 以上のように本発明によれば基材に対し全芳香族ポリ
エステル樹脂または強化全芳香族ポリエステル樹脂を加
熱溶融して接着することによって振動板を製造している
ため、射出成形によるものに比べ (ア)金型代が安価である。
(Effects of the Invention) As described above, according to the present invention, since the diaphragm is manufactured by heating and melting and bonding the wholly aromatic polyester resin or the reinforced wholly aromatic polyester resin to the substrate, injection molding is performed. (A) Mold cost is cheaper than that of

(イ)大型形成機が必要ではない。(B) No large forming machine is required.

(ウ)材料効率が良く、射出成形に比較して材料損失が
少ない。
(C) Material efficiency is good, and material loss is small compared to injection molding.

(エ)成形装置は従来のコーン製造装置で使用できる。(D) The molding device can be used in a conventional cone manufacturing device.

(オ)加えて、耐熱性が著しく向上する。(E) In addition, heat resistance is significantly improved.

等の効果がある。And so on.

【図面の簡単な説明】[Brief description of the drawings]

第1図は本発明の製造方法を示す一実施例、第2図
(a)は同上によって製造された耐熱性振動板、(b)
は同上の要部拡大説明図である。 第3図は本発明の他の実施例、第4図(a)は製造され
た耐熱性振動板、(b)はその要部拡大説明図である。 1……基材、2……上型、3……下型 4……フイルム状振動板 5……振動板
FIG. 1 is an embodiment showing a manufacturing method of the present invention, FIG. 2 (a) is a heat-resistant diaphragm manufactured by the same as above, (b)
FIG. 4 is an enlarged explanatory view of a main part of the above. FIG. 3 is another embodiment of the present invention, FIG. 4 (a) is a manufactured heat-resistant diaphragm, and FIG. 1 ... Substrate, 2 ... Upper mold, 3 ... Lower mold 4 ... Film-like diaphragm 5 ... Vibrator

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】高耐熱、高強度、高弾性率を有する無機繊
維、有機繊維の各々単独、またはこれらの混紡したもの
からなる織布(交織を含む)、不織布(紙状繊維マトリ
ックスを含む)等の基材(1)に、メラミン樹脂、フェ
ノール樹脂またはエポキシ樹脂の如き熱硬化性樹脂を含
浸し、かつ振動板形状に加熱成形し、これにフィルム状
であって振動板形状に形成された熱可塑性液晶高分子で
ある全芳香族ポリエステル樹脂または強化全芳香族ポリ
エステル樹脂を加熱溶融し、接着して製造することを特
徴とした耐熱性スピーカ用振動板の製造方法。
1. A woven fabric (including a mixed woven fabric) or a non-woven fabric (including a paper-like fiber matrix) made of an inorganic fiber having a high heat resistance, a high strength, and a high elastic modulus, an organic fiber, or a mixture thereof. The base material (1) such as the above was impregnated with a thermosetting resin such as a melamine resin, a phenol resin or an epoxy resin, and was thermoformed into a diaphragm shape, and was formed into a film shape and a diaphragm shape. A method for producing a diaphragm for a heat-resistant speaker, which is characterized in that a wholly aromatic polyester resin or a reinforced wholly aromatic polyester resin, which is a thermoplastic liquid crystal polymer, is melted by heating and then adhered to produce.
JP63099784A 1988-04-22 1988-04-22 Method for manufacturing diaphragm for heat-resistant speaker Expired - Lifetime JP2691990B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63099784A JP2691990B2 (en) 1988-04-22 1988-04-22 Method for manufacturing diaphragm for heat-resistant speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63099784A JP2691990B2 (en) 1988-04-22 1988-04-22 Method for manufacturing diaphragm for heat-resistant speaker

Publications (2)

Publication Number Publication Date
JPH01270491A JPH01270491A (en) 1989-10-27
JP2691990B2 true JP2691990B2 (en) 1997-12-17

Family

ID=14256566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63099784A Expired - Lifetime JP2691990B2 (en) 1988-04-22 1988-04-22 Method for manufacturing diaphragm for heat-resistant speaker

Country Status (1)

Country Link
JP (1) JP2691990B2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002034095A (en) * 2000-07-19 2002-01-31 Foster Electric Co Ltd Diaphragm for electro-acoustic transducer
JP3893540B2 (en) * 2002-05-20 2007-03-14 松下電器産業株式会社 Speaker diaphragm edge and manufacturing method thereof
JP4414809B2 (en) * 2004-04-26 2010-02-10 パイオニア株式会社 Method for manufacturing diaphragm for electroacoustic transducer
JP5352566B2 (en) * 2010-11-02 2013-11-27 勝 田丸 Diaphragm for audio equipment
US20120161549A1 (en) * 2010-12-23 2012-06-28 Harman International Industries, Incorporated System for assembling a speaker motor
CN113617232B (en) * 2021-08-30 2022-07-22 安徽清澜新材料科技有限公司 Reverse osmosis membrane non-woven fabric supporting material coated with modified polyester powder and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5466117A (en) * 1977-11-04 1979-05-28 Onkyo Kk Method of fabricating speaker vibrating plate
JPS62202699A (en) * 1985-11-22 1987-09-07 Mitsubishi Electric Corp Manufacture of speaker diaphragm
JPS62193496A (en) * 1986-02-20 1987-08-25 Sanon Kk Speaker diaphragm
JPS62253300A (en) * 1986-04-25 1987-11-05 Foster Denki Kk Diaphragm for loudspeaker

Also Published As

Publication number Publication date
JPH01270491A (en) 1989-10-27

Similar Documents

Publication Publication Date Title
TWI708683B (en) Laminated body, integrated molded product, and manufacturing method thereof
JP2691990B2 (en) Method for manufacturing diaphragm for heat-resistant speaker
KR20010095259A (en) Liquid crystal polyester resin composition, process for producing the same, and molded article thereof
JP6700049B2 (en) Carbon fiber sheet material, prepreg, laminated body, molded body and manufacturing method thereof
US3598693A (en) Molding composition
TW200401704A (en) Carbon fiber composite transfer member with reflective surfaces
KR20190118141A (en) Fiber-reinforced composites including and/or formed in part from fibrous non-woven layers
KR101714910B1 (en) Porous single polymer fibre composite and method for preparing porous single polymer fibre composite
CN113544322B (en) Continuous filament nonwoven fabric, laminate, composite material, and method for producing same
TW202134029A (en) Sandwich structure and method for manufacturing same
JPH01270494A (en) Manufacture of diaphragm for heat resisting speaker
JP2799910B2 (en) Damping composite and manufacturing method thereof
KR102366434B1 (en) Reinforced Fiber Composite Materials
JPH01270490A (en) Diaphragm for heat resisting speaker and manufacture thereof
US3658748A (en) Molding composition and method
JP3598787B2 (en) Doctor blade holder
US11883989B2 (en) Method for producing press molded body
JPS63286327A (en) Composite containing long fiber and carbon material whisker
KR101951205B1 (en) Fiber reinforced composite material and method of manufacturing the same
JPH0376731A (en) Production of fiber-reinforced foamed resin article
JPS6363749A (en) Curable resin composition for molding
JP2567606B2 (en) Sheet reinforced plastic
JP2961201B2 (en) Dust cap for speaker
TW202128422A (en) Sandwich structure and method for manufacturing same
JPS63287196A (en) Diaphragm for electro-acoustic transducer

Legal Events

Date Code Title Description
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080905

Year of fee payment: 11

EXPY Cancellation because of completion of term
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080905

Year of fee payment: 11