JPH04361012A - Heat-resistant cushioning material for molding press - Google Patents
Heat-resistant cushioning material for molding pressInfo
- Publication number
- JPH04361012A JPH04361012A JP3136701A JP13670191A JPH04361012A JP H04361012 A JPH04361012 A JP H04361012A JP 3136701 A JP3136701 A JP 3136701A JP 13670191 A JP13670191 A JP 13670191A JP H04361012 A JPH04361012 A JP H04361012A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- resistant
- molding press
- fiber aggregate
- cushioning material
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 57
- 238000000465 moulding Methods 0.000 title claims abstract description 52
- 239000000835 fiber Substances 0.000 claims abstract description 52
- 229920006015 heat resistant resin Polymers 0.000 claims abstract description 32
- 239000004744 fabric Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 25
- 238000003825 pressing Methods 0.000 abstract description 10
- 229920001971 elastomer Polymers 0.000 description 13
- 239000005060 rubber Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 229920002379 silicone rubber Polymers 0.000 description 7
- 239000004945 silicone rubber Substances 0.000 description 7
- 239000004760 aramid Substances 0.000 description 6
- 229920003235 aromatic polyamide Polymers 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920002943 EPDM rubber Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920006229 ethylene acrylic elastomer Polymers 0.000 description 3
- -1 polymetaphenylene isophthalamide Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 201000004384 Alopecia Diseases 0.000 description 2
- 240000008564 Boehmeria nivea Species 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 208000024963 hair loss Diseases 0.000 description 2
- 230000003676 hair loss Effects 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000012210 heat-resistant fiber Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- QZUPTXGVPYNUIT-UHFFFAOYSA-N isophthalamide Chemical compound NC(=O)C1=CC=CC(C(N)=O)=C1 QZUPTXGVPYNUIT-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000031070 response to heat Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、成形プレス用耐熱クッ
ション材に係り、特に、プリント基板用積層板や建築用
化粧合板などを製造するホットプレス工程に好適な成形
プレス用耐熱クッション材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-resistant cushioning material for a molding press, and more particularly to a heat-resistant cushioning material for a molding press suitable for hot-pressing processes for producing laminated boards for printed circuit boards, decorative plywood for construction, and the like.
【０００２】0002
【従来の技術】各種電子機器に多用されるプリント配線
用銅張り積層板は通常、樹脂製プリプレグの片面または
両面に銅箔を積層した後、これらを電気ないしは蒸気で
加熱された熱盤で加圧して製造する。この熱プレス工程
において、プリプレグは加熱により一旦粘度が下がって
液体状態に戻った後、徐々に硬化が進行する。従って、
プレス時の昇温と加圧のタイミングを樹脂の熱的特性に
応じて適宜調整しなければならない。また、この工程で
の温度分布と圧力分布を均一化するために、高温・高圧
下での繰り返し使用に耐えるクッション材を介在させる
ことが不可欠である。[Prior Art] Copper-clad laminates for printed wiring, which are often used in various electronic devices, are usually made by laminating copper foil on one or both sides of a resin prepreg, and then heating them on a hot plate heated with electricity or steam. Manufactured by pressing. In this hot pressing process, the prepreg once lowers its viscosity and returns to a liquid state due to heating, and then gradually hardens. Therefore,
The timing of temperature rise and pressurization during pressing must be adjusted as appropriate depending on the thermal characteristics of the resin. Furthermore, in order to equalize the temperature distribution and pressure distribution in this process, it is essential to use a cushioning material that can withstand repeated use at high temperatures and high pressures.
【０００３】また、一般にこの種の成形プレス用耐熱ク
ッション材としては、紙、不織布、織布、樹脂、無機質
材料、ゴムなどの単一素材で構成されたものと、複合材
料で構成されたものとがあった。そして、最近では、特
公昭６０−６２１４号に開示されているように、ウエッ
ブと未硬化ないしは半硬化状態の加熱硬化可能な接着剤
で被覆した強化基布とを交互に積層し、これにニードリ
ングを施して両者を一体化した後、得られた積層繊維層
を加熱加圧変形して前記接着剤を硬化することで、クッ
ション性、復元性、寸法安定性が良く、しかも使用に伴
うそれらの変化の少ない耐久性に富む成形プレス用クッ
ション材が提案されている。[0003] In general, this type of heat-resistant cushioning material for molding presses includes those made of a single material such as paper, nonwoven fabric, woven fabric, resin, inorganic material, and rubber, and those made of composite material. There was. Recently, as disclosed in Japanese Patent Publication No. 60-6214, a web and a reinforcing base fabric coated with an uncured or semi-cured heat-curable adhesive are alternately laminated, and this is then coated with a needle. After applying a ring to integrate the two, the obtained laminated fiber layer is deformed under heat and pressure to harden the adhesive, resulting in good cushioning properties, restoring properties, and dimensional stability, and moreover, Cushioning materials for molding presses have been proposed that are highly durable and exhibit little change.
【０００４】0004
【発明が解決しようとする課題】しかしながら、特公昭
６０−６２１４号に開示されている従来例は、ニードリ
ングする前の基布に前記接着剤を被覆しているため、ニ
ードリング時に繊維の切断が多く、ニードル効果が悪く
なる結果、立毛繊維束が少なくなり、前記積層繊維層に
よるクッション性が低下するという問題があった。また
、前記クッション性は、製作時の加熱加圧後における成
形プレス用クッション材の密度によって大きく変化する
が、常に安定した高クッション性を持続する成形プレス
用クッション材が得られ難いという問題があった。さら
に、基布の時と、前記積層繊維層に接着剤を含浸する時
と、２回樹脂加工を行っているため、生産性が劣るとい
う問題もあった。[Problems to be Solved by the Invention] However, in the conventional example disclosed in Japanese Patent Publication No. 60-6214, since the base fabric is coated with the adhesive before needling, fibers are likely to be cut during needling. There was a problem in that the needle effect worsened, the number of napped fiber bundles decreased, and the cushioning properties of the laminated fiber layer deteriorated. Furthermore, the cushioning properties vary greatly depending on the density of the cushioning material for molding presses after heating and pressing during production, but there is a problem in that it is difficult to obtain cushioning materials for molding presses that always maintain stable high cushioning properties. Ta. Furthermore, since resin processing is performed twice, once for the base fabric and once for impregnating the laminated fiber layer with an adhesive, there is also the problem of poor productivity.
【０００５】本発明は、このような問題を解決すること
を課題とするものであり、加熱加工後の成形プレス用ク
ッション材の密度に着目することで、常に安定した高ク
ッション性、生産性を向上した成形プレス用クッション
材を提供することを目的とする。[0005] The present invention aims to solve these problems, and by focusing on the density of the cushioning material for molding presses after heat processing, consistently high cushioning properties and productivity can be achieved. An object of the present invention is to provide an improved cushioning material for a molding press.
【０００６】[0006]
【課題を解決するための手段】この目的を達成するため
に本発明は、ウエッブと樹脂加工されていない基布とを
交互に積層し、これをニードリング接結して両者を一体
化した繊維集合体に耐熱性樹脂を含浸して加熱加圧し、
密度＝０．６ｇ／ｃｍ３ 以上、０．９ｇ／ｃｍ３ 未
満、となるようにしたことを特徴とする成形プレス用耐
熱クッション材を提供するものである。[Means for Solving the Problems] In order to achieve this object, the present invention creates a fiber in which a web and a non-resin-treated base fabric are alternately laminated, and the two are joined by needling. The aggregate is impregnated with heat-resistant resin and heated and pressurized.
The present invention provides a heat-resistant cushion material for a molding press, characterized in that the density is 0.6 g/cm3 or more and less than 0.9 g/cm3.
【０００７】[0007]
【作用】前記耐熱性樹脂を含浸して加熱加圧した後の成
形プレス用耐熱クッション材の密度を０．６ｇ／ｃｍ３
以上、０．９ｇ／ｃｍ３ 未満としたことで、常に安
定した高クッション性を付与することができる。即ち、
前記繊維集合体に同じ量の耐熱性樹脂を含浸しても、前
記加熱加圧後の成形プレス用耐熱クッション材の密度が
異なると、その圧縮率に大幅な違いを生じ、これに伴っ
て前記クッション性も大幅に変化する。前記加熱加圧後
の成形プレス用耐熱クッション材の密度が０．６ｇ／ｃ
ｍ３ 未満だと、クッション性が安定するまでに時間が
かかり、初期より安定した製品を得ることができない。
また、前記加熱加圧後の成形プレス用耐熱クッション材
の密度が０．９ｇ／ｃｍ３ 以上となると、当該耐熱性
樹脂の空隙率が低下し圧縮率の低下を招く。従って、前
記加熱加圧後の成形プレス用耐熱クッション材の密度を
０．６ｇ／ｃｍ３ 以上、０．９ｇ／ｃｍ３ 未満と限
定した。[Function] The density of the heat-resistant cushion material for molding press after impregnated with the heat-resistant resin and heated and pressurized is 0.6 g/cm3.
As described above, by setting the amount to be less than 0.9 g/cm3, stable high cushioning properties can be provided at all times. That is,
Even if the fiber aggregate is impregnated with the same amount of heat-resistant resin, if the density of the heat-resistant cushion material for the molding press after heating and pressing differs, there will be a significant difference in the compressibility. The cushioning properties also change significantly. The density of the heat-resistant cushion material for the molding press after heating and pressing is 0.6 g/c.
If it is less than m3, it will take time for the cushioning properties to stabilize, making it impossible to obtain a product that is more stable than the initial stage. Furthermore, if the density of the heat-resistant cushion material for a molding press after heating and pressing is 0.9 g/cm3 or more, the porosity of the heat-resistant resin will decrease, leading to a decrease in compressibility. Therefore, the density of the heat-resistant cushion material for a molding press after heating and pressing was limited to 0.6 g/cm 3 or more and less than 0.9 g/cm 3 .
【０００８】また、基布に予め樹脂加工を施さないため
、ニードリング時に繊維が切断されることがなく、ニー
ドリングをスムーズに行うことができる結果、立毛繊維
束の発生に支障を来すことがない。そして、前記耐熱性
樹脂の含浸は、前記加熱加圧前の繊維集合体に行うのみ
で十分な効果を上げることができるため、生産性に支障
を来すこともない。[0008] Furthermore, since the base fabric is not subjected to resin processing in advance, the fibers are not cut during needling, and needling can be performed smoothly, which prevents problems in the generation of napped fiber bundles. There is no. Further, since a sufficient effect can be obtained by impregnating the heat-resistant resin into the fiber aggregate before heating and pressing, there is no problem in productivity.
【０００９】[0009]
【実施例】次に、本発明に係る実施例について説明する
。
（実施例１）太さ＝２ｄ、長さ＝５１ｍｍ、のメタ芳香
族ポリアミド繊維からなるウエッブをクロスラッパで重
ねて目付＝４００ｇ／ｍ２ としたバットを、目付＝１
５０ｇ／ｍ２ 、平織、のメタ芳香族ポリアミド繊維（
ポリメタフェニレンイソフタルアミド）からなる基布の
上に重ね、これをニードリングして一体化する。次いで
、この一体化した繊維の基布側に、前記と同じバットを
重ね、ニードリングして一体化する。さらに、この操作
を繰り返し、目付＝２２００ｇ／ｍ２ 、厚み＝１０．
０ｍｍ、かさ密度＝０．２２ｇ／ｃｍ３ 、の繊維集合
体を作製する。この時、基布に耐熱性樹脂加工が施され
ていないため、ニードリング時に繊維が切断されること
がなく、ニードリングをスムーズに行うことができた。[Example] Next, an example according to the present invention will be described. (Example 1) A bat with a fabric weight of 400 g/m2 was made by overlapping webs made of meta-aromatic polyamide fibers with a thickness of 2 d and a length of 51 mm using a cross wrapper.
50g/m2, plain weave, meta-aromatic polyamide fiber (
It is layered on a base fabric made of poly(methphenylene isophthalamide) and then integrated by needling. Next, the same batt as above is placed on the base fabric side of the integrated fibers, and the fibers are integrated by needling. Further, repeat this operation to obtain a basis weight of 2200 g/m2 and a thickness of 10.
A fiber aggregate having a diameter of 0 mm and a bulk density of 0.22 g/cm3 is prepared. At this time, since the base fabric was not treated with a heat-resistant resin, the fibers were not cut during needling, and needling could be performed smoothly.
【００１０】次いで、この繊維集合体に耐熱性樹脂とし
て、シリコンゴムを含浸付着し、１００℃で１時間予備
乾燥を行なった後、熱盤プレス機を用いて１８０℃、４
０ｋｇ／ｃｍ２ で３０分間加熱加圧する。この時、前
記熱盤の間に３．５ｍｍのゲージを設けた状態で加熱加
圧を行ったため、シリコンゴムを当該繊維集合体全体に
均一に含浸するころができた。このようにして、目付＝
２６２５ｇ／ｍ２ 、かさ密度＝０．７５ｇ／ｃｍ３
、厚み＝３．５ｍｍ、の成形プレス用耐熱クッション材
を得た。尚、この成形プレス用耐熱クッション材中の前
記ゴム量は、１９重量％とした。
（実施例２）前記実施例１と同様の方法で、目付＝４０
０ｇ／ｍ２ の麻（ラミー）で構成したウエッブを重ね
たバットと、目付＝１５０ｇ／ｍ２ 、平織、のメタ芳
香族ポリアミド繊維（ポリメタフェニレンイソフタルア
ミド）で構成した基布とを交互に積層し、これをニード
リングして一体化し、目付＝２２８０ｇ／ｍ２ 、厚み
＝１１．４ｍｍ、かさ密度＝０．２０ｇ／ｃｍ３ 、の
繊維集合体を作製する。この時、基布に耐熱性樹脂加工
が施されていないため、ニードリング時に繊維が切断さ
れることがなく、ニードリングをスムーズに行うことが
できた。Next, this fiber aggregate is impregnated with silicone rubber as a heat-resistant resin, pre-dried at 100°C for 1 hour, and then dried at 180°C for 4 hours using a hot platen press.
Heat and pressurize at 0 kg/cm2 for 30 minutes. At this time, since heating and pressurization was performed with a 3.5 mm gauge provided between the heating plates, a roller was created in which the entire fiber aggregate was uniformly impregnated with silicone rubber. In this way, weight =
2625g/m2, bulk density=0.75g/cm3
A heat-resistant cushion material for a molding press having a thickness of 3.5 mm was obtained. The amount of rubber in this heat-resistant cushion material for a molding press was 19% by weight. (Example 2) By the same method as in Example 1, basis weight = 40
A batt made of webs made of 0g/m2 hemp (ramie) and a base fabric made of plain weave meta-aromatic polyamide fibers (polymetaphenylene isophthalamide) with a basis weight of 150g/m2 are laminated alternately. This is needled and integrated to produce a fiber aggregate having a basis weight of 2280 g/m2, a thickness of 11.4 mm, and a bulk density of 0.20 g/cm3. At this time, since the base fabric was not treated with a heat-resistant resin, the fibers were not cut during needling, and needling could be performed smoothly.
【００１１】次に、この繊維集合体に耐熱性樹脂として
、エチレンアクリルゴムを含浸付着し、１００℃で１時
間予備乾燥を行なった後、熱盤プレス機を用いて１８０
℃、４０ｋｇ／ｃｍ２ で３０分間加熱加圧する。この
時、前記熱盤の間に３．７ｍｍのゲージを設けた状態で
加熱加圧を行ったため、エチレンアクリルゴムを当該繊
維集合体全体に均一に含浸するころができた。このよう
にして、目付＝２９２３ｇ／ｍ２ 、かさ密度＝０．７
９ｇ／ｃｍ３ 、厚み＝３．７ｍｍ、の成形プレス用耐
熱クッション材を得た。尚、この成形プレス用耐熱クッ
ション材中の前記ゴム量は、２８重量％とした。
（実施例３）前記実施例１と同様の方法で、太さ＝６ｄ
、長さ＝５１ｍｍ、のポリエステルで構成したウエッブ
を重ね、目付＝４００ｇ／ｍ２ としたバットと、目付
＝１５０ｇ／ｃｍ２ 、平織、のメタ芳香族ポリアミド
繊維（ポリメタフェニレンイソフタルアミド）で構成し
た基布とを交互に積層し、これをニードリングして一体
化して、目付＝２２４７ｇ／ｍ２ 、厚み＝１２．５ｍ
ｍ、かさ密度＝０．１８ｇ／ｃｍ３ 、の繊維集合体を
作製する。この時、基布に耐熱性樹脂加工が施されてい
ないため、ニードリング時に繊維が切断されることがな
く、ニードリングをスムーズに行うことができた。Next, this fiber aggregate was impregnated with ethylene acrylic rubber as a heat-resistant resin, pre-dried at 100°C for 1 hour, and then heated at 180°C using a hot platen press.
Heat and pressurize at 40 kg/cm2 for 30 minutes. At this time, heating and pressurization was performed with a gauge of 3.7 mm provided between the heating plates, so that a roller was created in which the entire fiber aggregate was uniformly impregnated with ethylene acrylic rubber. In this way, basis weight = 2923g/m2, bulk density = 0.7
A heat-resistant cushion material for a molding press having a weight of 9 g/cm3 and a thickness of 3.7 mm was obtained. The amount of rubber in this heat-resistant cushion material for a molding press was 28% by weight. (Example 3) Thickness = 6d using the same method as in Example 1
A bat made of polyester webs with a length of 51 mm and a fabric weight of 400 g/m2, and a base fabric made of plain-woven meta-aromatic polyamide fibers (polymetaphenylene isophthalamide) with a fabric weight of 150 g/cm2. Layers are alternately layered with cloth and then integrated by needling, fabric weight = 2247g/m2, thickness = 12.5m
A fiber aggregate with a bulk density of 0.18 g/cm3 is prepared. At this time, since the base fabric was not treated with a heat-resistant resin, the fibers were not cut during needling, and needling could be performed smoothly.
【００１２】次いで、この繊維集合体に耐熱性樹脂とし
て、ＥＰＤＭ（エチレンプロピレンジエンゴム）を含浸
付着し、１００℃で１時間予備乾燥を行なった後、熱盤
プレス機を用いて１８０℃、４０ｋｇ／ｃｍ２ で３０
分間加熱加圧する。この時、前記熱盤の間に３．６ｍｍ
のゲージを設けた状態で加熱加圧を行ったため、ＥＰＤ
Ｍを当該繊維集合体全体に均一に含浸することができた
。
このようにして、目付＝２６２８ｇ／ｍ２ 、かさ密度
＝０．７３ｇ／ｃｍ３ 、厚み＝３．６ｍｍ、の成形プ
レス用耐熱クッション材を得た。尚、この成形プレス用
耐熱クッション材中の前記ゴム量は、１７重量％とした
。
（比較例１）前記実施例１の繊維集合体に実施例１と同
一条件でシリコンゴムを含浸付着して１００℃で１時間
予備乾燥した後、熱盤プレス機を用いて１８０℃、４０
ｋｇ／ｃｍ２ で３０分間加熱加圧する。この時、前記
熱盤の間に２．８ｍｍのゲージを設けた状態で加熱加圧
を行ったため、シリコンゴムを当該繊維集合体全体に均
一に含浸するころができた。このようにして、目付＝２
６２８ｇ／ｍ２ 、かさ密度＝０．９４ｇ／ｃｍ３ 、
厚み＝２．８ｍｍ、の成形プレス用耐熱クッション材を
得た。
尚、この成形プレス用耐熱クッション材中の前記ゴム量
は、１９重量％とした。
（比較例２）前記実施例１の繊維集合体に実施例１と同
一条件でシリコンゴムを含浸付着して１００℃で１時間
予備乾燥した後、熱盤プレス機を用いて１８０℃、４０
ｋｇ／ｃｍ２ で３０分間加熱加圧する。この時、前記
熱盤の間に５．１ｍｍのゲージを設けた状態で加熱加圧
を行ったため、シリコンゴムを当該繊維集合体全体に均
一に含浸するころができた。このようにして、目付＝２
６２８ｇ／ｍ２ 、かさ密度＝０．５２ｇ／ｃｍ３ 、
厚み＝５．１ｍｍ、の成形プレス用耐熱クッション材を
得た。
尚、この成形プレス用耐熱クッション材中の前記ゴム量
は、１９重量％とした。
（比較例３）前記実施例１の繊維集合体に、熱盤プレス
機を用いて１８０℃、８０ｋｇ／ｃｍ２ で３０分間加
熱加圧する。この時、前記熱盤の間に３．３ｍｍのゲー
ジを設けた状態で加熱加圧を行い、かさ密度＝０．６７
ｇ／ｃｍ３ 、厚み＝３．３ｍｍの成形プレス用耐熱ク
ッション材を作製した。
（実験）次に、前記実施例１〜実施例３及び比較例１〜
比較例３で得た成形プレス用耐熱クッション材について
、クッション性と耐久性の比較試験を次の条件により行
った。Next, this fiber aggregate was impregnated with EPDM (ethylene propylene diene rubber) as a heat-resistant resin, pre-dried at 100°C for 1 hour, and then pressed at 180°C using a hot platen press with a weight of 40 kg. /cm2 = 30
Heat and pressurize for a minute. At this time, there is a distance of 3.6 mm between the heating plates.
Since heating and pressurizing was performed with a gauge installed, the EPD
M could be uniformly impregnated throughout the fiber aggregate. In this way, a heat-resistant cushion material for a molding press was obtained having a basis weight of 2628 g/m2, a bulk density of 0.73 g/cm3, and a thickness of 3.6 mm. The amount of rubber in this heat-resistant cushion material for a molding press was 17% by weight. (Comparative Example 1) The fiber aggregate of Example 1 was impregnated with silicone rubber under the same conditions as Example 1, pre-dried at 100°C for 1 hour, and then heated to 40°C at 180°C using a hot platen press.
Heat and pressurize at kg/cm2 for 30 minutes. At this time, since heating and pressurization was performed with a 2.8 mm gauge provided between the heating plates, a roller was created in which the entire fiber aggregate was uniformly impregnated with silicone rubber. In this way, basis weight = 2
628g/m2, bulk density=0.94g/cm3,
A heat-resistant cushion material for a molding press with a thickness of 2.8 mm was obtained. The amount of rubber in this heat-resistant cushion material for a molding press was 19% by weight. (Comparative Example 2) The fiber aggregate of Example 1 was impregnated with silicone rubber under the same conditions as Example 1, pre-dried at 100°C for 1 hour, and then heated to 40°C at 180°C using a hot platen press.
Heat and pressurize at kg/cm2 for 30 minutes. At this time, heating and pressurization was performed with a 5.1 mm gauge provided between the heating plates, so that a roller was created in which the entire fiber aggregate was uniformly impregnated with silicone rubber. In this way, basis weight = 2
628g/m2, bulk density=0.52g/cm3,
A heat-resistant cushion material for a molding press with a thickness of 5.1 mm was obtained. The amount of rubber in this heat-resistant cushion material for a molding press was 19% by weight. (Comparative Example 3) The fiber aggregate of Example 1 was heated and pressed at 180° C. and 80 kg/cm 2 for 30 minutes using a hot platen press. At this time, heating and pressurizing was performed with a 3.3 mm gauge provided between the heating plates, and the bulk density was 0.67.
A heat-resistant cushioning material for a molding press having a weight of 3.3 mm and a thickness of 3.3 mm was produced. (Experiment) Next, the above Examples 1 to 3 and Comparative Examples 1 to
Regarding the heat-resistant cushioning material for a molding press obtained in Comparative Example 3, a comparative test of cushioning properties and durability was conducted under the following conditions.
【００１３】試験機＝テスト用熱盤プレス機最高温度＝
１８０℃
加圧力＝１５〜５０ｋｇ／ｃｍ２
加圧時間（５０ｋｇ／ｃｍ２ ）＝５０分表１に被試験
品の基本仕様を示す。[0013]Testing machine=Testing hot platen press machine maximum temperature=
180°C Pressure force = 15 to 50 kg/cm2 Pressure time (50 kg/cm2) = 50 minutes Table 1 shows the basic specifications of the tested product.
【００１４】[0014]
【表１】[Table 1]
【００１５】図１は、クッション性試験をする際、被試
験品に与える付加条件となる熱盤プレスの温度−圧力サ
イクルを示す運転特性図である。図２は、前記条件によ
る被試験品の圧縮率の変動を示す特性図であり、比較例
１と３は、その圧縮率が２〜２．５％程度であるのに対
し、本発明に係る成形プレス用耐熱クッション材（実施
例１〜実施例３）は、４％以上のレベルで安定し、高い
クッション性を有することが確認された。但し、ここで
、
圧縮率＝〔（ｔ１５−ｔ５０）／ｔ１５〕×１００ｔ１
５＝１５ｋｇ／ｃｍ２ 負荷時の資料厚さｔ５０＝５０
ｋｇ／ｃｍ２ 負荷時の資料厚さと定義してある。FIG. 1 is an operational characteristic diagram showing the temperature-pressure cycle of a hot platen press, which is an additional condition to be applied to the product under test when conducting a cushioning property test. FIG. 2 is a characteristic diagram showing the variation in the compression ratio of the tested product under the above conditions. Comparative Examples 1 and 3 have a compression ratio of about 2 to 2.5%, whereas the compression ratio of the present invention It was confirmed that the heat-resistant cushioning materials for molding presses (Examples 1 to 3) were stable at a level of 4% or more and had high cushioning properties. However, here, compression rate=[(t15-t50)/t15]×100t1
5=15kg/cm2 Material thickness under load t50=50
kg/cm2 Defined as material thickness under load.
【００１６】この実験から、本発明に係る成形プレス用
耐熱クッション材が２００回程度の繰り返し負荷後でも
、高いクッション性を維持できることが明らかになった
。比較例２は、クッション性が安定するまで時間がかか
り、初期より安定した製品を得ることができない。また
、比較例３は、加熱加圧後の密度が０．６７ｇ／ｃｍ３
であるにもかかわらず、前記条件による圧縮率が２〜
２．５％と低い結果となった。これは、比較例３の繊維
集合体には、耐熱性樹脂を含浸付着していないことが原
因している。即ち、繊維集合体に耐熱性樹脂を含浸付着
することにより、成形プレス用耐熱クッション材の物性
を向上することができる。This experiment revealed that the heat-resistant cushioning material for a molding press according to the present invention can maintain high cushioning properties even after repeated loading about 200 times. In Comparative Example 2, it took time for the cushioning properties to become stable, making it impossible to obtain a product that was stable from the initial stage. Furthermore, in Comparative Example 3, the density after heating and pressing was 0.67 g/cm3.
Despite this, the compression ratio under the above conditions is 2~
The result was a low 2.5%. This is because the fiber aggregate of Comparative Example 3 was not impregnated with heat-resistant resin. That is, by impregnating and adhering a heat-resistant resin to the fiber aggregate, the physical properties of the heat-resistant cushion material for a molding press can be improved.
【００１７】以下、繊維集合体に耐熱性樹脂を含浸付着
することにより生じる成形プレス用耐熱クッション材の
物性の向上について説明する。
（クッション性）被試験品として、前記実施例１で作製
した成形プレス用耐熱クッション材（サンプルＮｏ．１
）、比較例３で作製した成形プレス用耐熱クッション材
（サンプルＮｏ．２）、サンプルＮｏ．２の上下（上層
表面と下層表面）に、７８３ｇ／ｍ２ のゴムシートを
各々積層した成形プレス用耐熱クッション材（サンプル
Ｎｏ．３）、を用意する。このサンプルＮｏ．１〜Ｎｏ
．３に１８０℃、５０ｋｇ／ｃｍ２ で６０分間の加熱
加圧を２００回行った後、１８０℃で負荷圧力１５ｋｇ
／ｃｍ２ と５０ｋｇ／ｃｍ２ のサンプルの加圧厚み
を測定し、クッション性（圧縮率；％）を測定した。こ
の結果を表２に示す。[0017] The improvement in physical properties of a heat-resistant cushion material for a molding press produced by impregnating and adhering a heat-resistant resin to a fiber aggregate will be explained below. (Cushioning properties) The heat-resistant cushioning material for molding press produced in Example 1 (Sample No. 1) was used as a test product.
), heat-resistant cushion material for molding press produced in Comparative Example 3 (sample No. 2), sample No. A heat-resistant cushioning material for a molding press (sample No. 3) in which rubber sheets of 783 g/m2 were laminated on the upper and lower surfaces (upper layer surface and lower layer surface) of Sample No. 2 was prepared. This sample no. 1~No
．． After heating and pressurizing 200 times for 60 minutes at 180℃ and 50kg/cm2 in step 3, the load pressure was 15kg at 180℃.
/cm2 and 50 kg/cm2, and the cushioning properties (compressibility; %) were measured. The results are shown in Table 2.
【００１８】[0018]
【表２】[Table 2]
【００１９】表２より、サンプルＮｏ．１は、ゴム付着
量が４２５ｇ／ｍ２ とサンプルＮｏ．３より少ないに
もかかわらず、高クッション性を有することが確認され
た。これは、繊維集合体にゴムを含浸付着することで、
当該繊維集合体全体にゴムが付着するため、当該繊維集
合体の立毛、ブリッジ構造体が前記ゴムにより強固に固
定され、且つ、高圧に対しても当該繊維集合体の両側面
に付着したゴムの存在により、ウエッブと基布との隙間
を保持し易い構造となっているため、弾性変形性、復元
性が極めて良好となったためである。From Table 2, sample No. Sample No. 1 has a rubber adhesion amount of 425 g/m2. It was confirmed that it had high cushioning properties even though it was less than 3. This is done by impregnating and adhering rubber to the fiber aggregate.
Since the rubber adheres to the entire fiber aggregate, the raised and bridge structures of the fiber aggregate are firmly fixed by the rubber, and even under high pressure, the rubber attached to both sides of the fiber aggregate remains stable. This is because, due to its presence, the structure is such that it is easy to maintain the gap between the web and the base fabric, resulting in extremely good elastic deformability and restorability.
【００２０】次に、実施例１で作製した成形プレス用耐
熱クッション材に含浸付着する耐熱性樹脂量について検
討したところ、付着量が全体の６０ｗｔ％となるまでは
、付着量が増加するにつれ圧縮率も増加するが、６０ｗ
ｔ％を越えると、逆に低下する傾向となることが確認さ
れた。これは、耐熱性樹脂の付着量が一定量より増加す
ると、耐熱性樹脂が非常に密な状態となり、弾力性に欠
けるようになるためである。以上を考慮に入れると、耐
熱性樹脂の含浸付着量は、１０〜６０ｗｔ％、好ましく
は、２０〜４０ｗｔ％とすることが好適である。
（厚み精度）次に、前記実施例１で作製した成形プレス
用耐熱クッション材（サンプルＮｏ．１）と、比較例３
で作製した成形プレス用耐熱クッション材（サンプルＮ
ｏ．２）の厚み精度σを調査した。この結果を表３に示
す。Next, we examined the amount of heat-resistant resin that was impregnated and adhered to the heat-resistant cushion material for molding presses produced in Example 1, and found that as the amount of adhesion increased, compression decreased until the amount of adhesion reached 60 wt% of the total. The rate also increases, but 60w
It was confirmed that when it exceeds t%, it tends to decrease. This is because when the amount of heat-resistant resin attached exceeds a certain amount, the heat-resistant resin becomes very dense and lacks elasticity. Taking the above into consideration, it is suitable that the amount of heat-resistant resin impregnated and adhered is 10 to 60 wt%, preferably 20 to 40 wt%. (Thickness Accuracy) Next, the heat-resistant cushion material for molding press produced in Example 1 (Sample No. 1) and Comparative Example 3
Heat-resistant cushioning material for molding presses (sample N) made with
o. The thickness accuracy σ of 2) was investigated. The results are shown in Table 3.
【００２１】[0021]
【表３】[Table 3]
【００２２】表３より、サンプルＮｏ．１は、サンプル
Ｎｏ．２に比べ、厚み精度σが極めて高いことが確認さ
れた。これは、繊維集合体に耐熱性樹脂を含浸し、加熱
加圧した成形プレス用耐熱クッション材は、当該耐熱性
樹脂により、全体を完全に覆われているためである。From Table 3, sample No. 1 is sample No. It was confirmed that the thickness accuracy σ was extremely high compared to 2. This is because the heat-resistant cushion material for a molding press in which a fiber aggregate is impregnated with a heat-resistant resin and then heated and pressurized is completely covered with the heat-resistant resin.
【００２３】高品質プリント基板に使用する成形プレス
用耐熱クッション材の厚み精度の要求レベルは、σ＝０
．０１ｍｍであるが、サンプルＮｏ．１は、この値を十
分に満足していることがわかる。また、本発明に係る成
形プレス用耐熱クッション材は、その厚みが安定してい
るため、使用初期から安定使用することができる。
（寸法安定性）繊維集合体は、高温で収縮する性質を有
している。この収縮は、成形プレス用耐熱クッション材
の寸法安定性に悪影響を与える。この収縮を緩和するた
め、予め高温で成形プレス用耐熱クッション材を作製す
る事が試みられているが、長期に渡たって高温・高圧下
で当該成形プレス用耐熱クッション材を使用すると、収
縮してしまい未だ十分な寸法安定性を付与することがで
きない。[0023] The required level of thickness accuracy of the heat-resistant cushion material for molding presses used for high-quality printed circuit boards is σ = 0.
．． 01 mm, but sample No. It can be seen that 1 sufficiently satisfies this value. Moreover, since the heat-resistant cushion material for a molding press according to the present invention has a stable thickness, it can be used stably from the initial stage of use. (Dimensional stability) The fiber aggregate has the property of shrinking at high temperatures. This shrinkage adversely affects the dimensional stability of the heat-resistant cushion material for molding presses. In order to alleviate this shrinkage, attempts have been made to prepare heat-resistant cushioning materials for molding presses at high temperatures in advance, but if the heat-resistant cushioning materials for molding presses are used for a long period of time under high temperature and high pressure, they will shrink. As a result, it is still not possible to provide sufficient dimensional stability.
【００２４】これに対し、耐熱性樹脂は、熱に対し膨張
する傾向があるため、繊維集合体に当該耐熱性樹脂を含
浸することにより、両者の性質を組み合わせ、寸法安定
性を向上することができる。
（脱毛防止）繊維集合体は毛羽が多いが、これに耐熱性
樹脂を含浸することで、成形プレス用耐熱クッション材
表面が毛羽立つことがないため、当該毛羽の切断や、脱
毛を防止することができる。[0024] On the other hand, heat-resistant resins tend to expand in response to heat, so by impregnating the fiber aggregate with the heat-resistant resins, it is possible to combine both properties and improve dimensional stability. can. (Prevention of hair loss) The fiber aggregate has a lot of fuzz, but by impregnating it with a heat-resistant resin, the surface of the heat-resistant cushion material for molding presses does not become fuzzed, so cutting of the fuzz and hair loss can be prevented. can.
【００２５】この他にも、耐熱性樹脂を含浸し、加熱加
圧したことで、成形プレス用耐熱クッション材の表面が
適度な硬さとなるため、取扱が容易となる。また、耐熱
性樹脂により通気性が減少するため、自動積載機等のバ
キューム処理が容易となる。さらに、耐熱性樹脂にカー
ボン等の静電気防止剤を添加することで、静電気防止効
果を付与することもできる。[0025] In addition, by impregnating a heat-resistant resin and heating and pressurizing the material, the surface of the heat-resistant cushion material for a molding press becomes moderately hard, making it easy to handle. In addition, since the heat-resistant resin reduces air permeability, vacuum processing using an automatic loading machine or the like becomes easier. Furthermore, by adding an antistatic agent such as carbon to the heat-resistant resin, an antistatic effect can be imparted.
【００２６】尚、耐熱性樹脂としては、シリコンゴム、
エチレンアクリルゴム、ＥＰＤＭの他、フッ素ゴム等、
他の耐熱性樹脂を使用することもできる。そして、これ
らのゴムにシリカ、炭酸カルシウム等の充填剤を添加す
ることにより、さらに耐熱性を向上することができる。
また、基布及びウエッブに使用する繊維としては、芳香
族ポリアミド、メタ芳香族ポリアミド、麻（ラミー）、
ポリエステルの他、所望により、ポリベンジスミダゾー
ル、ポリアミドイミド等、他の耐熱性繊維、または、ナ
イロン等を使用してもよい。[0026] As the heat-resistant resin, silicone rubber,
In addition to ethylene acrylic rubber, EPDM, fluororubber, etc.
Other heat resistant resins can also be used. By adding fillers such as silica and calcium carbonate to these rubbers, the heat resistance can be further improved. In addition, the fibers used for the base fabric and web include aromatic polyamide, meta-aromatic polyamide, hemp (ramie),
In addition to polyester, other heat-resistant fibers such as polybendismidazole, polyamideimide, or nylon may be used, if desired.
【００２７】[0027]
【発明の効果】以上説明したように本発明によれば、前
記耐熱性樹脂を含浸して加熱加圧した後の成形プレス用
耐熱クッション材の密度を０．６ｇ／ｃｍ３ 以上、０
．９ｇ／ｃｍ３ 未満としたことで、常に当該成形プレ
ス用耐熱クッション材に安定した高クッション性を付与
することができる。As explained above, according to the present invention, the density of the heat-resistant cushion material for a molding press after being impregnated with the heat-resistant resin and heated and pressurized is 0.6 g/cm3 or more, and 0.6 g/cm3 or more.
．． By setting the amount to be less than 9 g/cm 3 , stable high cushioning properties can always be imparted to the heat-resistant cushioning material for a molding press.
【００２８】また、基布に予め樹脂加工を施さないため
、ニードリング時に繊維が切断されることがなく、ニー
ドリングをスムーズに行うことができる結果、立毛繊維
束の発生に支障を来すことがないため、繊維集合体自身
のクッション性も十分に保持することができる。そして
、前記耐熱性樹脂の含浸は、前記加熱加圧前の繊維集合
体に行うのみで十分な効果を上げることができるため、
生産性に支障を来すこともない。[0028] Furthermore, since the base fabric is not subjected to resin processing in advance, the fibers are not cut during needling, and needling can be performed smoothly, which prevents problems in the generation of napped fiber bundles. Therefore, the cushioning properties of the fiber aggregate itself can be sufficiently maintained. And, since the impregnation of the heat-resistant resin can be sufficiently effected by simply impregnating the fiber aggregate before heating and pressurizing,
It does not hinder productivity.
【００２９】この結果、常に安定した高クッション性を
有する成形プレス用耐熱クッション材を効率良く提供す
ることができる。As a result, it is possible to efficiently provide a heat-resistant cushioning material for a molding press that always has stable and high cushioning properties.
【図１】本実施例で使用する試験機の熱盤プレスの温度
−圧力サイクルを示す運転特性図である。FIG. 1 is an operating characteristic diagram showing the temperature-pressure cycle of the hot platen press of the test machine used in this example.
【図２】本実施例に係る被試験品の圧縮率の変動を示す
特性図である。FIG. 2 is a characteristic diagram showing fluctuations in compression ratio of the test article according to the present example.
Claims (1)
とを交互に積層し、これをニードリング接結して両者を
一体化した繊維集合体に耐熱性樹脂を含浸して加熱加圧
し、密度＝０．６ｇ／ｃｍ３ 以上、０．９ｇ／ｃｍ３
未満、となるようにしたことを特徴とする成形プレス
用耐熱クッション材。[Claim 1] The web and the non-resin-treated base fabric are alternately laminated, and the two are joined by needling to form a single fiber aggregate.The fiber aggregate is impregnated with a heat-resistant resin and heated and pressurized to obtain a density. =0.6g/cm3 or more, 0.9g/cm3
A heat-resistant cushioning material for a molding press, characterized in that it has a
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3136701A JP3021778B2 (en) | 1991-06-07 | 1991-06-07 | Heat resistant cushion material for forming press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3136701A JP3021778B2 (en) | 1991-06-07 | 1991-06-07 | Heat resistant cushion material for forming press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04361012A true JPH04361012A (en) | 1992-12-14 |
| JP3021778B2 JP3021778B2 (en) | 2000-03-15 |
Family
ID=15181464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3136701A Expired - Lifetime JP3021778B2 (en) | 1991-06-07 | 1991-06-07 | Heat resistant cushion material for forming press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3021778B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1084821A3 (en) * | 1999-09-17 | 2002-01-02 | Ichikawa Co.,Ltd. | Heat resistant cushion material for forming press |
| JP2006116596A (en) * | 2004-05-28 | 2006-05-11 | Mitsuboshi Belting Ltd | Heat-resistant cushioning material for press |
| US8435630B2 (en) | 2006-11-28 | 2013-05-07 | Yamauchi Corporation | Cushioning pad for hot press and method for manufacturing the same |
| JP2013173364A (en) * | 2007-09-28 | 2013-09-05 | Toray Ind Inc | Method and device for manufacturing sheet having fine shape transferred thereon |
| US8709590B2 (en) | 2006-07-18 | 2014-04-29 | Yamauchi Corporation | Hot-press cushion material and manufacturing method of the same |
-
1991
- 1991-06-07 JP JP3136701A patent/JP3021778B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1084821A3 (en) * | 1999-09-17 | 2002-01-02 | Ichikawa Co.,Ltd. | Heat resistant cushion material for forming press |
| JP2006116596A (en) * | 2004-05-28 | 2006-05-11 | Mitsuboshi Belting Ltd | Heat-resistant cushioning material for press |
| US8709590B2 (en) | 2006-07-18 | 2014-04-29 | Yamauchi Corporation | Hot-press cushion material and manufacturing method of the same |
| US8435630B2 (en) | 2006-11-28 | 2013-05-07 | Yamauchi Corporation | Cushioning pad for hot press and method for manufacturing the same |
| JP2013173364A (en) * | 2007-09-28 | 2013-09-05 | Toray Ind Inc | Method and device for manufacturing sheet having fine shape transferred thereon |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3021778B2 (en) | 2000-03-15 |
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