JPH0530321B2 - - Google Patents
Info
- Publication number
- JPH0530321B2 JPH0530321B2 JP59125764A JP12576484A JPH0530321B2 JP H0530321 B2 JPH0530321 B2 JP H0530321B2 JP 59125764 A JP59125764 A JP 59125764A JP 12576484 A JP12576484 A JP 12576484A JP H0530321 B2 JPH0530321 B2 JP H0530321B2
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic wave
- protective layer
- mold
- fiber
- reinforced resin
- 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
Links
- 239000000463 material Substances 0.000 claims description 66
- 229920005989 resin Polymers 0.000 claims description 36
- 239000011347 resin Substances 0.000 claims description 36
- 239000011241 protective layer Substances 0.000 claims description 25
- 239000000835 fiber Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 17
- 239000004744 fabric Substances 0.000 description 9
- 239000011521 glass Substances 0.000 description 9
- 239000003677 Sheet moulding compound Substances 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 6
- 239000003365 glass fiber Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000000748 compression moulding Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000004412 Bulk moulding compound Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 229920001567 vinyl ester resin Polymers 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 235000019646 color tone Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009503 electrostatic coating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009787 hand lay-up Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 239000002345 surface coating layer Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/141—Apparatus or processes specially adapted for manufacturing reflecting surfaces
- H01Q15/142—Apparatus or processes specially adapted for manufacturing reflecting surfaces using insulating material for supporting the reflecting surface
Description
［発明の利用分野］
本発明は電磁波反射板、電磁シールド板等に用
いられる電磁波反射体の製造方法に関する。
［背景技術］
電波通信用のパラボラアンテナに用いる電磁波
反射板、パーソナルコンピユーター、フアクシミ
リ、複写機等のオフイスオートメーシヨン機器に
用いる電磁（electro magnetic interference）
シールド板には電磁波反射体が必要である。
肉厚が0.3mm以上の電波反射体が必要な場合
には、アルミニウム等の金属板、金属箔等を用い
ればよいが、これらは変形しやすく、かつ復元性
が無い。またこれらの反射体の裏面に繊維強化樹
脂を補強用として用いる場合にはこの繊維強化樹
脂と一体成型することが困難である。
そこで柔軟性を有する金網、織布、不織布等を
導電反射材として用い、これらを補強材料ととも
に一体成形すれば、反射面として曲面を必要とす
る場合に最適となる。
この保護層成形の方法としては、第１にゲルコ
ートをパラボラ鏡面側の型上に吹きつけておき、
反射材及びガラスマツト等を積層するハンドレイ
アツプやレジンインジエクシヨンによる方法、第
２に反射材をSMC（シートモールデイングコンパ
ウンド）やガラスクロスプリプレグ等のシート状
樹脂材料の間に挟み込み圧縮成形、真空成形によ
り一体成形する方法、第３に反射材をパラボラ鏡
面に沿うように樹脂材料と一体成形した後、スプ
レー塗装、静電塗装等により塗膜を鏡面上に形成
する方法が代表的である。
ところが上記の第１の方法では、ゲルコートを
吹きつける工数を必要とし、生産性が低い。また
第２の方法は生産性は向上するが、反射材の波打
ち、切れ、リブ中への入り込み等が生じ易く、ま
たその確認作業は不可能である。さらに第３の方
法では専用設備を必要とし、工数も増大し、ゆず
肌、ピンホールやたれといつた表面欠陥が生じや
すい。
［発明の目的］
本発明は上記事実を考慮し、樹脂材料の間へ電
磁波反射材料を挟持して積層構造の電磁波反射体
を得る場合の製造方法であり、成形時に電磁波反
射材料の変形が生じ難く、また成形時に反射材料
の成形状況を確認できる電磁波反射体の製造方法
を得ることが目的である。
［発明の概要］
本発明に係る電磁波反射体の製造方法では、繊
維強化樹脂材料とこれへ載置した電磁波反射材料
とを型内で加圧加熱して半硬化状態とする。その
後、型を開放して保護層となるべき流動性樹脂を
電磁波反射材料上に配置し加圧加熱することによ
り一体的な積層構造を得るようになつている。
したがつて保護層の成形前であつて電磁波反射
材料と繊維強化樹脂材料との成形後に型を開放し
た状態で、表面に露出している電磁波反射材料の
成形状態を確認することができ、場合によつては
電磁波反射材料を整形することができる。このた
め電磁波反射体の鏡面精度を確保しつつ反射体の
リブ、ボスへの樹脂材料の入り込みを防止でき、
表面保護層の圧みも0.7mm以下とすることができ
る。この厚さはガラス繊維やコーテイング樹脂の
粘度を調整して自由に変更可能である。
しかし、保護層を成形する前に、繊維強化樹脂
材料が未硬化状態であることが必要であり、完全
硬化後に表面保護層を成形する場合には繊維強化
樹脂材料及び電磁波反射材料と保護層との密着性
が低下する。
本発明に用いる電磁波反射材料としては多孔質
等の導電材が適用でき、炭素繊維、金属メツキ有
機繊維、アルミコートガラス繊維、金属繊維、こ
れらによる織布、網、組み物、編物、不織布紙及
びこれらの塊状物、金属メツキフオーム、及びこ
れらの圧縮体、アルミ箔等の金属箔、及びこれら
に打抜き処理をしたもの等が適用できる。
また繊維強化樹脂材料（FRP）としては耐候
性、耐着雪性、耐熱性を有することが好ましく、
ガラス短繊維を含んだ樹脂材料、一般的にシート
モールデイングコンパウンド（SMC）と呼ばれ
るシート材料が適用可能である。またこのシート
モールデイングコンパウンドをさらに厚くしたシ
ツクモールデイングコンパウンド（TMC）、バル
クモールデイングコンパウンド（BMC）、や繊維
強化ポリプロピレン（商品名：AZDEL）も適用
できる。
必要に応じて繊維強化樹脂材料と電磁波反射体
との間にガラス繊維のサーフエスマツト、クロ
ス、コンテイニユアスマツト等の中間層を介在す
ることができ、この中間層は電磁波反射材料が炭
素繊維クロスやアルミコートガラスクロスや金網
等の引張強度に優れた材料である場合には省略し
てもよい。
また保護層はウレタン系、ビニルエステル系、
エポキシ系、エポキシアクリレート系、フラン系
等の熱硬化型の樹脂を硬化剤と混合したものを用
いることができる。この保護層はガラス繊維のサ
ーフエスヤツトのクロスを用いることにより塗膜
が強度を増大し、塗膜圧も0.1〜0.7mmまで調整可
能であり、耐候性が向上する。さらにガラス繊維
の織布及び不織布の樹脂含浸シートも保護層とし
て適用できる。
保護層の上にさらに表面コーテイング剤も施す
ことができ、保護層を成形した後に型を開放して
コーテイング剤を塗布し、再び型内へ加圧加熱す
ることにより表面光沢を向上し、また混合される
トナーを変更して所望の色調外観を得ることがで
きる。
このようにしてガラス含量30重量％以下、厚さ
0.7mm以下の強固でかつ表面外観に優れた表面保
護層をアンテナ鏡面上に形成することができる。
なお、本発明に用いる電磁波反射材料、補強
材、中間層はこれらを複数枚重ねて多重積層構造
としてもよい。
［発明の実施例］
実施例 １
本発明をFRPパラボラアンテナの製造に適用
した。第１図に示される電磁波反射材料１０とし
ては、金属染色アクリル繊維（商品名サンダーロ
ン）の編物を用い、繊維強化樹脂材料１２として
ガラス短繊維強化不飽和ポエステル樹脂シート
（SMC）が用いられており、電磁波反射材料１０
及び繊維強化樹脂材料１２が中間層１３を挟持す
ると共に反射面に沿うように下型１４上へ積層さ
れている。下型１４は成形品の背面に補強リブ１
８を形成するための凹部が設けられている。
この第１図では、繊維強化樹脂材料１２上へ電
磁波反射材料１０を載置した後に上型２２を下型
１４へ密着し、成形温度140℃、成形圧力50Kg／
cm2で２分間加圧し成形した。
第２図に示される如く上型２２を上昇して型を
開き電磁波反射材料１０の成形状況を確認でき
る。保護層２４としてガラスサフエスマツト２５
（約30g／m2）を電磁波反射材料１０上へ載置し、
不飽和ビニルエステル系樹脂コンパウンドを硬化
剤と混合して樹脂供給装置２６から供給し、上型
２２を再び下型１４へ密着させ、加圧加熱成形し
た。
これによつて第３図に示される如く電磁波反射
材料１０、繊維強化樹脂材料１２、保護層２４が
一体的に積層された電磁波反射体が出来上がつ
た。保護層２４は電磁波反射材料１０を浸透して
繊維強化樹脂材料１２へ至ることがないので、電
磁波反射材料１０に変形、たれが生ずることはな
い。
さらに第４図に示される如く上型２２を開放し
た後に樹脂供給装置２８から２液性ウレタン樹脂
を供給して加圧加熱圧縮成形することにより、表
面コーテイング層が形成されてさらに光沢が向上
する。この樹脂供給装置２８へ各種の色トナーを
混入することによりさまざまの色調を得ることが
できる。
実施例 ２
電磁波反射材料１０及び繊維強化樹脂材料１２
は実施例１と同一の材料を用いて同じ条件で成形
した。
上型を開放した後にガラスクロス（200g／m2）
を投入し、実施例１と同一の樹脂を70g供給して
再度加熱圧縮成形して電磁波反射体を製造した。
実施例 ３
電磁波反射材料１０及び繊維強化樹脂材料１２
は実施例１と同一であり、電磁波反射材料１０は
２枚のガラスサーフエスマツトの間に挟んで
SMCと一体成形し、型開き後２液性のウレタン
系樹脂を供給して加圧加熱した。
実施例 ４
電磁波反射材料１０として炭素繊維マツト（ト
レカBO−050）を用い、これを２放のガラスク
ロス（約200g／m2）の間に挟んでSMCと一体成
形した。型開きの後１液性のウレタン系樹脂を供
給して加熱圧縮成形した。
実施例 ５
電磁波反射材料１０及び繊維強化樹脂材料１２
は実施例１と同一の材料を用いて同じ条件で成形
した。
上型を開放した後に２液性ウレタン系樹脂を供
給して加圧加熱し保護層を形成した。
[Field of Application of the Invention] The present invention relates to a method of manufacturing an electromagnetic wave reflector used for an electromagnetic wave reflecting plate, an electromagnetic shielding plate, etc. [Background technology] Electromagnetic wave reflecting plates used in parabolic antennas for radio communication, electromagnetic interference used in office automation equipment such as personal computers, facsimile machines, and copying machines.
The shield plate requires an electromagnetic wave reflector. If a radio wave reflector with a wall thickness of 0.3 mm or more is required, a metal plate such as aluminum, metal foil, etc. may be used, but these are easily deformed and have no restorability. Furthermore, when a fiber-reinforced resin is used for reinforcement on the back surface of these reflectors, it is difficult to integrally mold the reflector with the fiber-reinforced resin. Therefore, if a flexible wire mesh, woven fabric, non-woven fabric, etc. is used as the conductive reflective material and these are integrally molded together with a reinforcing material, it becomes optimal when a curved surface is required as the reflective surface. The method for forming this protective layer is as follows: First, gel coat is sprayed onto the mold on the parabolic mirror side.
The second method is by hand lay-up or resin injection, in which reflective materials and glass mats are laminated.The second method is to sandwich the reflective materials between sheet-like resin materials such as SMC (sheet molding compound) or glass cloth prepreg, and use compression molding or vacuum. Typical methods include integral molding by molding, and thirdly, a method in which the reflective material is integrally molded with a resin material along the parabolic mirror surface, and then a coating film is formed on the mirror surface by spray painting, electrostatic coating, etc. However, the first method described above requires many man-hours to spray the gel coat, resulting in low productivity. Although the second method improves productivity, the reflective material is likely to be wavy, cut, or get into the ribs, and it is impossible to confirm this. Furthermore, the third method requires specialized equipment, increases the number of man-hours, and is prone to surface defects such as orange skin, pinholes, and sag. [Object of the Invention] Taking the above facts into consideration, the present invention is a manufacturing method for obtaining an electromagnetic wave reflector with a laminated structure by sandwiching an electromagnetic wave reflective material between resin materials, and in which deformation of the electromagnetic wave reflective material occurs during molding. The object of the present invention is to obtain a method for manufacturing an electromagnetic wave reflector that is difficult to manufacture and that also allows checking the molding status of the reflective material during molding. [Summary of the Invention] In the method for manufacturing an electromagnetic wave reflector according to the present invention, a fiber-reinforced resin material and an electromagnetic wave reflective material placed thereon are heated under pressure in a mold to be in a semi-cured state. Thereafter, the mold is opened, and the fluid resin that will become the protective layer is placed on the electromagnetic wave reflective material and heated under pressure to obtain an integrated laminated structure. Therefore, before molding the protective layer and after molding the electromagnetic wave reflective material and the fiber-reinforced resin material, it is possible to check the molded state of the electromagnetic wave reflective material exposed on the surface with the mold open. In some cases, the electromagnetic wave reflecting material can be shaped. Therefore, it is possible to prevent resin material from entering the ribs and bosses of the reflector while ensuring the mirror accuracy of the electromagnetic wave reflector.
The pressure of the surface protective layer can also be 0.7 mm or less. This thickness can be freely changed by adjusting the viscosity of the glass fibers and coating resin. However, before molding the protective layer, it is necessary that the fiber-reinforced resin material is in an uncured state, and when molding the surface protective layer after complete curing, the fiber-reinforced resin material, electromagnetic wave reflecting material, and protective layer must be in an uncured state. adhesion is reduced. Porous and other conductive materials can be used as the electromagnetic wave reflecting material used in the present invention, including carbon fibers, metal-plated organic fibers, aluminum-coated glass fibers, metal fibers, woven fabrics, nets, braids, knitted fabrics, non-woven paper and These lumps, metal plating forms, compressed bodies thereof, metal foils such as aluminum foil, and punched materials thereof can be used. In addition, it is preferable that the fiber reinforced resin material (FRP) has weather resistance, snow accretion resistance, and heat resistance.
A resin material containing short glass fibers, generally a sheet material called sheet molding compound (SMC), can be applied. In addition, thick molding compound (TMC), bulk molding compound (BMC), which is a thicker version of this sheet molding compound, and fiber reinforced polypropylene (product name: AZDEL) can also be used. If necessary, an intermediate layer such as glass fiber surf mat, cloth, or continuous mat can be interposed between the fiber-reinforced resin material and the electromagnetic wave reflector. It may be omitted if the material has excellent tensile strength, such as cloth, aluminum-coated glass cloth, or wire mesh. In addition, the protective layer is urethane-based, vinyl ester-based,
A mixture of thermosetting resin such as epoxy, epoxy acrylate, or furan with a curing agent can be used. This protective layer uses glass fiber Surf Suit cloth to increase the strength of the coating film, the coating thickness can be adjusted from 0.1 to 0.7 mm, and weather resistance is improved. Furthermore, resin-impregnated sheets of woven and non-woven glass fibers can also be used as the protective layer. A surface coating agent can also be applied on top of the protective layer. After molding the protective layer, the mold is opened and the coating agent is applied, and the surface gloss is improved by pressurizing and heating the mold again. The toner used can be varied to obtain the desired tonal appearance. In this way the glass content is less than 30% by weight, the thickness
A strong surface protective layer with a thickness of 0.7 mm or less and excellent surface appearance can be formed on the antenna mirror surface. Note that the electromagnetic wave reflecting material, reinforcing material, and intermediate layer used in the present invention may have a multilayer structure by stacking a plurality of these materials. [Embodiments of the Invention] Example 1 The present invention was applied to manufacturing an FRP parabolic antenna. As the electromagnetic wave reflecting material 10 shown in FIG. 1, a knitted fabric of metal-dyed acrylic fiber (trade name: Thunderon) is used, and as the fiber-reinforced resin material 12, short glass fiber-reinforced unsaturated polyester resin sheet (SMC) is used. Electromagnetic wave reflective material 10
A fiber-reinforced resin material 12 is laminated onto the lower mold 14 so as to sandwich the intermediate layer 13 and along the reflective surface. The lower mold 14 has reinforcing ribs 1 on the back of the molded product.
8 is provided. In FIG. 1, after placing the electromagnetic wave reflecting material 10 on the fiber-reinforced resin material 12, the upper mold 22 is brought into close contact with the lower mold 14, the molding temperature is 140°C, and the molding pressure is 50 kg/kg.
It was pressed and molded at cm 2 for 2 minutes. As shown in FIG. 2, the upper mold 22 is raised and the mold is opened so that the molding status of the electromagnetic wave reflecting material 10 can be checked. Glass safety mat 25 as protective layer 24
(approximately 30 g/m 2 ) is placed on the electromagnetic wave reflecting material 10,
An unsaturated vinyl ester resin compound was mixed with a curing agent and supplied from the resin supply device 26, and the upper mold 22 was brought into close contact with the lower mold 14 again, followed by pressure and heat molding. As a result, as shown in FIG. 3, an electromagnetic wave reflector in which the electromagnetic wave reflecting material 10, the fiber reinforced resin material 12, and the protective layer 24 were integrally laminated was completed. Since the protective layer 24 does not penetrate the electromagnetic wave reflective material 10 and reach the fiber reinforced resin material 12, the electromagnetic wave reflective material 10 will not be deformed or sag. Further, as shown in FIG. 4, after the upper mold 22 is opened, a two-component urethane resin is supplied from the resin supply device 28 and pressurized heating compression molding is performed, thereby forming a surface coating layer and further improving the gloss. . By mixing various color toners into this resin supply device 28, various color tones can be obtained. Example 2 Electromagnetic wave reflective material 10 and fiber reinforced resin material 12
was molded using the same material and under the same conditions as in Example 1. Glass cloth (200g/m 2 ) after opening the upper mold
70g of the same resin as in Example 1 was supplied and heat compression molded again to produce an electromagnetic wave reflector. Example 3 Electromagnetic wave reflective material 10 and fiber reinforced resin material 12
is the same as in Example 1, and the electromagnetic wave reflecting material 10 is sandwiched between two glass surf mats.
It was integrally molded with SMC, and after opening the mold, a two-component urethane resin was supplied and heated under pressure. Example 4 A carbon fiber mat (Trading Card BO-050) was used as the electromagnetic wave reflecting material 10, and this was sandwiched between two pieces of glass cloth (approximately 200 g/m 2 ) and integrally molded with the SMC. After opening the mold, a one-component urethane resin was supplied and heat compression molding was performed. Example 5 Electromagnetic wave reflective material 10 and fiber reinforced resin material 12
was molded using the same material and under the same conditions as in Example 1. After opening the upper mold, a two-component urethane resin was supplied and heated under pressure to form a protective layer.
【表】
このようにして得られた保護層２４の膜圧が第
１表に示されている。
実施例 ６〜８
電磁波反射材料１０及び繊維強化樹脂材料１２
は第１実施例と同一材料を用い、加圧時間のみを
変え、他は同一条件で成形した。
上型開放後に２液性ウレタン樹脂を供給し、加
熱圧縮して保護層を形成した。
加圧時間及び得られた電磁波反射体の保護層の
密着性結果が第２表に示されている。ここに密着
性結果はJISK5400、碁盤目試験による剥離残存
数を示すものである。[Table] Table 1 shows the film thickness of the protective layer 24 obtained in this manner. Examples 6 to 8 Electromagnetic wave reflective material 10 and fiber reinforced resin material 12
The same material as in the first example was used, only the pressurization time was changed, and the other conditions were the same. After opening the upper mold, a two-component urethane resin was supplied and heated and compressed to form a protective layer. Table 2 shows the pressurization time and the adhesion results of the protective layer of the electromagnetic wave reflector obtained. The adhesion results here indicate the number of remaining peels according to JISK5400 and a grid test.
【表】
［発明の効果］
以上説明した如く本発明に係る電磁波反射体の
製造方法では、繊維強化樹脂材料と電磁波反射材
料とを成形したのちに表面保護層を成形するの
で、電磁波反射材料の変形が少なくかつ成形時に
反射体の成形状況を確認することができる優れた
効果を有する。[Table] [Effects of the Invention] As explained above, in the method for manufacturing an electromagnetic wave reflector according to the present invention, the surface protective layer is molded after the fiber reinforced resin material and the electromagnetic wave reflective material are molded. It has the excellent effect of minimizing deformation and making it possible to check the molding status of the reflector during molding.
第１図〜第４図は本発明の製造手順を示す断面
図である。
１０……電磁波反射材料、１２……繊維強化樹
脂材料、１４……下型、２４……保護層。
1 to 4 are cross-sectional views showing the manufacturing procedure of the present invention. 10... Electromagnetic wave reflective material, 12... Fiber reinforced resin material, 14... Lower mold, 24... Protective layer.
Claims (1)
射材料を一体的に挟持した積層構造の電磁波反射
体を得る電磁波反射体の製造方法であつて、前記
繊維強化樹脂材料とこれへ載置した電磁波反射材
料とを型内で加圧加熱して半硬化状態とし、その
後型を開放して流動性樹脂を前記電磁波反射材料
上に配置し加圧加熱し保護層を形成することを特
徴とした電磁波反射体の製造方法。1. A method for producing an electromagnetic wave reflector for obtaining an electromagnetic wave reflector having a laminated structure in which an electromagnetic wave reflective material is integrally sandwiched between a fiber reinforced resin material and a protective layer, the method comprising: the fiber reinforced resin material and a protective layer placed thereon; The electromagnetic wave reflecting material is heated under pressure in a mold to bring it into a semi-cured state, and then the mold is opened and a fluid resin is placed on the electromagnetic wave reflective material and heated under pressure to form a protective layer. A method for manufacturing an electromagnetic wave reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59125764A JPS614304A (en) | 1984-06-19 | 1984-06-19 | Production of electromagnetic wave reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59125764A JPS614304A (en) | 1984-06-19 | 1984-06-19 | Production of electromagnetic wave reflector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS614304A JPS614304A (en) | 1986-01-10 |
| JPH0530321B2 true JPH0530321B2 (en) | 1993-05-07 |
Family
ID=14918242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59125764A Granted JPS614304A (en) | 1984-06-19 | 1984-06-19 | Production of electromagnetic wave reflector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS614304A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2606704A1 (en) * | 1986-11-18 | 1988-05-20 | Mecelec Sa | Method for producing electrically conducting components by the compression moulding technique, sandwich sheets for implementing the said method and electrically conducting components obtained |
| EP0476228A1 (en) * | 1990-08-20 | 1992-03-25 | Bridgestone Corporation | Reflector and method of and apparatus for fabricating the same |
| EP0543664A3 (en) * | 1991-11-21 | 1993-09-22 | Nifco Inc. | Parabolic antenna and method of manufacturing reflector body of the same |
| US5840383A (en) * | 1996-02-12 | 1998-11-24 | Bgf Industries, Inc. | Electromagnetic wave reflective fabric |
| JP5366251B2 (en) * | 2009-10-14 | 2013-12-11 | 信越ポリマー株式会社 | Lens for ultrasonic diagnostic apparatus and manufacturing method thereof |
| WO2024029575A1 (en) * | 2022-08-02 | 2024-02-08 | 積水化学工業株式会社 | Radio wave reflecting body, manufacturing method for radio wave reflecting body, construction method for radio wave reflecting body |
-
1984
- 1984-06-19 JP JP59125764A patent/JPS614304A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS614304A (en) | 1986-01-10 |
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