JP2000154477A - Production of press cushioning material - Google Patents
Production of press cushioning materialInfo
- Publication number
- JP2000154477A JP2000154477A JP10329235A JP32923598A JP2000154477A JP 2000154477 A JP2000154477 A JP 2000154477A JP 10329235 A JP10329235 A JP 10329235A JP 32923598 A JP32923598 A JP 32923598A JP 2000154477 A JP2000154477 A JP 2000154477A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- press
- fiber
- cushion material
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/06—Platens or press rams
- B30B15/061—Cushion plates
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Woven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は化粧版、プリント回
路板等の積層板を製造する際に使用するホットプレス機
のクッション材等好適なプレスクッション材の製造方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a suitable press cushion material such as a cushion material for a hot press used for producing a laminate such as a decorative plate or a printed circuit board.
【０００２】[0002]
【従来の技術】通常ホットプレス機においては、プレス
成形する際に熱板と熱板との間にクッション材を挿入し
て、熱板の歪みを修正するとともにプレス成型する化粧
版の板面に圧力と熱が均等に加わるようにしている。2. Description of the Related Art Normally, in a hot press machine, a cushion material is inserted between hot plates during press forming to correct the distortion of the hot plate and to apply the same to the surface of a decorative plate to be press formed. Pressure and heat are applied equally.
【０００３】従来、この様なクッション材としてはクラ
フト紙やゴム材、フェルト材もしくは多重織物が知られ
ている、しかしながらクラフト紙は通常１０〜２０枚重
ねて使用するため、１回毎に重ね合わせ作業や破損紙の
交換が必要となり、作業性が悪い。Conventionally, kraft paper, rubber material, felt material, or multiple woven fabrics are known as such cushion materials. However, since kraft paper is usually used by stacking 10 to 20 sheets, the kraft paper is stacked every time. Work and replacement of damaged paper are required, resulting in poor workability.
【０００４】また、ゴム材は高温高圧のホットプレス条
件下（１６０〜２２０℃、圧力４０〜１２０ｋｇ／ｃｍ
2）では劣化が起こり、クッション性の低下および変形
が生じ易く、一方、フェルト材は密度分布に班が多く、
また短繊維から構成されるので発塵し易く、プレス成型
する製品に異物として付着するという問題があった。The rubber material is hot pressed under high temperature and high pressure conditions (160-220 ° C., pressure 40-120 kg / cm).
In 2 ), deterioration occurs, and the cushioning property is likely to be reduced and deformed. On the other hand, the density distribution of felt material is large,
In addition, since it is composed of short fibers, it is easy to generate dust and has a problem that it adheres to a product to be press-formed as a foreign substance.
【０００５】さらに、特公平８−１７８８０号公報に
は、多重織物を基材としたプレスクッション材が開示さ
れており、該プレスクッション材は簡単な製造工程で高
い耐久性を有するという特徴がある反面、通気度が高い
ので表面の吸引による自動搬送装置での搬送が難しく、
紡績糸を使用した場合は発塵しやすい等の問題があっ
た。 このような問題を解決するため、フェルト材や多
重織物に樹脂を含浸させた後、該樹脂を常圧下で焼成す
ることにより通気度を下げると共に発塵を防ぐ方法も知
られているが、樹脂の付着量を多くしても自動搬送が可
能な程度（２ｃｃ／ｃｍ2／ｍｉｎ以下）にまで通気度
を下げるのは困難であった。Further, Japanese Patent Publication No. Hei. 8-17880 discloses a press cushion material based on multiple woven fabrics, which is characterized in that the press cushion material has high durability in a simple manufacturing process. On the other hand, because of high air permeability, it is difficult to transport with an automatic transport device by suctioning the surface,
When a spun yarn is used, there is a problem that dust is easily generated. In order to solve such a problem, a method of impregnating a felt material or multiple woven fabrics with a resin and then baking the resin under normal pressure to reduce air permeability and prevent dust generation is also known. It was difficult to reduce the air permeability to an extent that automatic conveyance was possible ( 2 cc / cm 2 / min or less) even if the amount of adhering was increased.
【０００６】[0006]
【発明が解決しようとする課題】本発明の目的は、高温
高圧のホットプレス条件下においてもクッション性の低
下や変形が生じ難く、発塵が起こりにくい上、自動搬送
装置での搬送が可能な程度に通気度が低下されたプレス
クッション材を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to reduce the cushioning property and deformation under hot press conditions of high temperature and high pressure, to prevent the generation of dust, and to be able to be transferred by an automatic transfer device. An object of the present invention is to provide a press cushion material having a reduced air permeability.
【０００７】[0007]
【課題を解決するための手段】本発明者らは、上記問題
を解決すべく鋭意研究を重ねた結果、布帛に樹脂を含浸
させた後、加温・加圧下で焼成するとき、布帛内部が密
な構造になって通気度を著しく低下させることができ、
さらに繊維と樹脂の密着性が高くなるので発塵防止効果
も向上することを究明した。すなわち本発明は、耐熱性
合成繊維から構成される布帛に樹脂を含浸させた後、該
樹脂を加温加圧下で焼成することを特徴とするプレスク
ッション材の製造方法である。Means for Solving the Problems The present inventors have conducted intensive studies to solve the above problems. As a result, after impregnating the cloth with a resin, when firing under heating and pressure, the inside of the cloth has a problem. It becomes dense structure and can significantly reduce air permeability,
In addition, it has been found that the adhesion between the fiber and the resin is increased, so that the effect of preventing dust generation is also improved. That is, the present invention is a method for producing a press cushion material, which comprises impregnating a resin made of a heat-resistant synthetic fiber with a resin and firing the resin under heating and pressure.
【０００８】[0008]
【発明の実施の形態】本発明で使用する布帛を構成する
繊維は、熱圧成型時の耐久性に優れた耐熱性合成繊維で
あり、具体的にはアラミド繊維、ポリイミド繊維、ポリ
フェニレンサルファイド繊維、ポリパラフェニレンベン
ゾビスオキサゾール繊維等の耐熱性合成繊維が挙げられ
る。上記繊維は１種類のみに限定されるものではなく、
２種以上を複合して使用しても構わない。BEST MODE FOR CARRYING OUT THE INVENTION The fibers constituting the fabric used in the present invention are heat-resistant synthetic fibers having excellent durability at the time of hot pressing, and specifically, aramid fibers, polyimide fibers, polyphenylene sulfide fibers, and the like. Heat-resistant synthetic fibers such as polyparaphenylene benzobisoxazole fibers are exemplified. The fibers are not limited to only one type,
Two or more kinds may be used in combination.
【０００９】布帛の種類は織編物、不織布或いはフェル
トなど特に限定されないが、３〜５重の多重織物が目付
けの均一性の点から好ましい。２重織以下の織物では織
物厚さが薄くクッション性に乏しい。一方、６重織以上
の織物では正常な織物組織にならず、また製織が困難と
なり易い。The type of the fabric is not particularly limited, such as a woven or knitted fabric, a nonwoven fabric, or a felt, but a three- to five-ply multi-woven fabric is preferred from the viewpoint of uniformity of the basis weight. In a woven fabric having a double weave or less, the woven fabric thickness is small and the cushioning property is poor. On the other hand, a woven fabric having six or more layers does not have a normal woven structure, and weaving tends to be difficult.
【００１０】また、本発明で使用する樹脂はクッション
材として熱圧成型に耐えうる樹脂であれば良く、フッ素
樹脂、ポリアラミド樹脂、ポリイミド樹脂、ポリフェニ
ルスルホン樹脂、メラミン樹脂、シリコンアクリル樹
脂、エポキシ樹脂等の樹脂を使用することが出来るが、
耐熱性、成形性、クッション性からフッ素系樹脂が好ま
しい。中でも、フッ素ゴムラテックスを用いた場合、特
にクッション性に優れたクッション材とすることができ
る。The resin used in the present invention may be any resin that can withstand hot-press molding as a cushioning material, such as a fluororesin, a polyaramid resin, a polyimide resin, a polyphenylsulfone resin, a melamine resin, a silicone acrylic resin, and an epoxy resin. Can be used,
Fluororesins are preferred from the viewpoint of heat resistance, moldability and cushioning properties. Among them, when a fluororubber latex is used, a cushioning material having particularly excellent cushioning properties can be obtained.
【００１１】本発明においては、先ず上記の布帛に上記
樹脂を含浸する。この含浸処理は、例えば布帛に樹脂ド
ープを含浸またはコーティングした後、乾燥すれば良
い。乾燥温度は例えばフッ素樹脂として４フッ化エチレ
ン−６フッ化プロピレン共重合体（以下ＦＥＰと称す
る）或いはフッ素ゴムラテックスを使用した場合、１０
０〜２５０℃が好ましい。In the present invention, the cloth is first impregnated with the resin. This impregnation treatment may be performed, for example, by impregnating or coating a cloth with a resin dope and then drying. The drying temperature is, for example, 10 when using a tetrafluoroethylene-6-fluoropropylene copolymer (hereinafter referred to as FEP) or a fluororubber latex as the fluororesin.
0-250 ° C is preferred.
【００１２】次いで、布帛に含浸された樹脂を加温加圧
下で焼成するが、この焼成は熱圧プレス法で行うことが
好ましい。即ち、熱圧プレス法のような加温加圧下で圧
縮焼成することによって、布帛の内部を密な構造とし、
通気性を低下することができる上、繊維と樹脂との密着
性が高くなるので、繊維からの発塵を低減することがで
きる。Next, the resin impregnated in the cloth is fired under heating and pressurization. This firing is preferably performed by a hot press method. That is, by compressing and firing under heating and pressurization such as a hot press method, the inside of the fabric has a dense structure,
Since the air permeability can be reduced and the adhesion between the fiber and the resin is increased, dust generation from the fiber can be reduced.
【００１３】これに対して、従来のオーブン等による常
圧下の焼成では、繊維と樹脂の密着が不十分であり本発
明の目的は達せられない。On the other hand, in the conventional baking under normal pressure using an oven or the like, the adhesion between the fiber and the resin is insufficient, and the object of the present invention cannot be achieved.
【００１４】熱圧プレスの温度は使用する樹脂が熱可塑
性樹脂の場合、その２次転移点以上であれば良く、好ま
しくは融点未満である。プレス温度が使用する樹脂の２
次点移転未満の場合、樹脂の変形が少なくなるので繊維
と樹脂とが十分に密着せず、一方、プレス温度が使用す
る樹脂の融点以上の場合は樹脂の付着の均一性、表面の
仕上がり、取り扱い性が劣る。具体的には前述のＦＥＰ
の場合は２００〜２７０℃、フッ素ゴムラテックスの場
合は１８０〜２５０℃である。When the resin to be used is a thermoplastic resin, the temperature of the hot pressing may be higher than the secondary transition point thereof, and is preferably lower than the melting point. Press temperature 2 of the resin used
If less than the next point transfer, the deformation of the resin is reduced, so that the fiber and the resin do not adhere sufficiently.On the other hand, if the pressing temperature is higher than the melting point of the resin used, the uniformity of the adhesion of the resin, the surface finish, Poor handling. Specifically, the above-mentioned FEP
Is 200-270 ° C., and 180-250 ° C. for the fluoro rubber latex.
【００１５】また熱硬化性樹脂を使用する場合、熱圧プ
レスの温度は該樹脂の硬化温度が適当である。When a thermosetting resin is used, the temperature of the hot pressing is appropriately set at the curing temperature of the resin.
【００１６】熱圧プレスの圧力は、好ましくは５〜２２
０ｋｇ／ｃｍ2であるが、プレスクッション材として実
使用する際に負荷される圧力より高目に設定すること
で、プレス時の寸法変化を防ぐことができる。The pressure of the hot press is preferably 5 to 22.
Although it is 0 kg / cm 2 , a dimensional change at the time of pressing can be prevented by setting the pressure higher than the pressure applied when actually used as a press cushion material.
【００１７】本発明のクッション材は実使用に際して通
常単体で用いるが、ホットプレスの条件によっては複数
枚重ね合わせて用いることもできる。また樹脂の焼成時
に樹脂含浸された布帛を複数枚重ねあわせて加圧するこ
とにより、複数枚の布帛を貼り合わせることもできる。The cushioning material of the present invention is usually used alone in actual use, but a plurality of the cushioning materials may be used depending on the conditions of hot pressing. In addition, a plurality of cloths impregnated with a resin can be laminated and pressed together when the resin is fired, so that a plurality of cloths can be bonded together.
【００１８】[0018]
【実施例】以下、本発明を実施例を用いてさらに詳細に
説明する。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples.
【００１９】［実施例１］メタ型アラミド繊維(帝人
（株）製、コーネックス)よりなる紡績糸を用い、目付
けが９００ｇ／ｍ2の３重織物を得た。上記織物に水系
のＦＥＰを含浸させた後１１０℃で乾燥させた。次い
で、該織物を表１に示す条件で、ホットプレス機を用い
てプレスし、樹脂の焼成を行った。 得られたプレスク
ッション材の通気度及び発塵性を表１に示す。尚、発塵
性は発塵量の非常に少ないものを◎、少ないものを○、
やや多いものを△、多いものを×であらわした。Example 1 A triple woven fabric having a basis weight of 900 g / m 2 was obtained using a spun yarn composed of meta-type aramid fiber (manufactured by Teijin Limited, Conex). The fabric was impregnated with an aqueous FEP and dried at 110 ° C. Next, the woven fabric was pressed using a hot press under the conditions shown in Table 1 to fire the resin. Table 1 shows the air permeability and dust generation properties of the obtained press cushion material. In addition, the dust generation property is ◎ for those with a very small amount of dust generation,
Somewhat many are indicated by △, and many are indicated by ×.
【００２０】［実施例２］実施例１において、含浸時の
ＦＥＰの濃度２倍にし、ＦＥＰの付着量を表１に示す如
く変更した以外は実施例１と同様に実施した。得られた
プレスクッション材の通気度及び発塵性を表１に示す。Example 2 The procedure of Example 1 was repeated, except that the concentration of FEP at the time of impregnation was doubled and the amount of FEP deposited was changed as shown in Table 1. Table 1 shows the air permeability and dust generation properties of the obtained press cushion material.
【００２１】［実施例３］実施例１において、３重織物
に代えてメタ型アラミド繊維(帝人（株）製、コーネッ
クス)よりなる、目付けが９５０ｇ／ｍ2のフェルトを使
用した以外は実施例１と同様に実施した。得られたプレ
スクッション材の通気度及び発塵性を表１に示す。Example 3 Example 1 was repeated except that a felt made of meta-type aramid fiber (manufactured by Teijin Limited, Conex) and having a basis weight of 950 g / m 2 was used instead of the triple woven fabric. Performed as in Example 1. Table 1 shows the air permeability and dust generation properties of the obtained press cushion material.
【００２２】［実施例４］実施例１において、ＦＥＰに
代えてフッ素ゴムラテックス（ダイキン（株）製、ダイ
エルラテックス）を使用した以外は実施例１と同様に実
施した。得られたプレスクッション材の通気度及び発塵
性を表１に示す。Example 4 Example 1 was carried out in the same manner as in Example 1 except that FEP was replaced with fluoro rubber latex (Daikin latex, manufactured by Daikin Co., Ltd.). Table 1 shows the air permeability and dust generation properties of the obtained press cushion material.
【００２３】［比較例１］実施例１において、樹脂の焼
成を実施しなかった以外は実施例１と同様に実施した。
得られたプレスクッション材の通気度及び発塵性を表１
に示す。Comparative Example 1 The procedure of Example 1 was repeated, except that the resin was not fired.
Table 1 shows the air permeability and dust generation of the obtained press cushion material.
Shown in
【００２４】［比較例２］実施例１において、樹脂を常
圧のオーブン中で乾熱焼成した以外は実施例１と同様に
実施した。得られたプレスクッション材の通気度及び発
塵性を表１に示す。Comparative Example 2 The procedure of Example 1 was repeated, except that the resin was fired in an oven at normal pressure. Table 1 shows the air permeability and dust generation properties of the obtained press cushion material.
【００２５】[0025]
【表１】 [Table 1]
【００２６】[0026]
【発明の効果】本発明によれば、高温高圧のホットプレ
ス条件下においてもクッション性の低下や変形が生じ難
く、発塵が起こりにくい上、自動搬送装置での搬送が可
能な程度に通気度が低下されたプレスクッション材が提
供される。According to the present invention, the cushioning property is not easily reduced or deformed even under hot press conditions of high temperature and high pressure. And a press cushion material having a reduced pressure.
Claims (4)
脂を含浸させた後、該樹脂を加温加圧下で焼成すること
を特徴とするプレスクッション材の製造方法。1. A method for manufacturing a press cushion material, comprising impregnating a resin made of a heat-resistant synthetic fiber with a resin, and firing the resin under heating and pressure.
ある請求項１記載のプレスクッション材の製造方法。2. The method for producing a press cushion material according to claim 1, wherein the fabric is a multiple woven fabric made of heat-resistant spun yarn.
は２記載のプレスクッション材の製造方法。3. The method according to claim 1, wherein the resin is a fluororesin.
ある請求項３記載のプレスクッション材の製造方法。4. The method for producing a press cushion material according to claim 3, wherein the fluororesin is a fluororubber latex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10329235A JP2000154477A (en) | 1998-11-19 | 1998-11-19 | Production of press cushioning material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10329235A JP2000154477A (en) | 1998-11-19 | 1998-11-19 | Production of press cushioning material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000154477A true JP2000154477A (en) | 2000-06-06 |
Family
ID=18219168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10329235A Pending JP2000154477A (en) | 1998-11-19 | 1998-11-19 | Production of press cushioning material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000154477A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007245579A (en) * | 2006-03-16 | 2007-09-27 | Mitsuboshi Belting Ltd | Heat-resistant cushion material for press |
| KR100846760B1 (en) * | 2001-06-19 | 2008-07-16 | 이치가와 가부시키가이샤 | Heat resistant cushioning material for press molding |
| CN102555398A (en) * | 2010-12-14 | 2012-07-11 | 得万利科技股份有限公司 | Buffer material for hot press and application thereof |
| CN103981723A (en) * | 2014-05-09 | 2014-08-13 | 浙江康隆达特种防护科技股份有限公司 | Latex dispensing glove and preparation method thereof |
| JP2015127065A (en) * | 2013-11-29 | 2015-07-09 | 三ツ星ベルト株式会社 | Cushioning material for hot pressing |
| CN105696324A (en) * | 2016-04-20 | 2016-06-22 | 吴江市泽旺纺织有限公司 | Novel composite high-temperature-resistant and odor-resistant textile material and method for preparing same |
-
1998
- 1998-11-19 JP JP10329235A patent/JP2000154477A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100846760B1 (en) * | 2001-06-19 | 2008-07-16 | 이치가와 가부시키가이샤 | Heat resistant cushioning material for press molding |
| JP2007245579A (en) * | 2006-03-16 | 2007-09-27 | Mitsuboshi Belting Ltd | Heat-resistant cushion material for press |
| CN102555398A (en) * | 2010-12-14 | 2012-07-11 | 得万利科技股份有限公司 | Buffer material for hot press and application thereof |
| JP2015127065A (en) * | 2013-11-29 | 2015-07-09 | 三ツ星ベルト株式会社 | Cushioning material for hot pressing |
| CN103981723A (en) * | 2014-05-09 | 2014-08-13 | 浙江康隆达特种防护科技股份有限公司 | Latex dispensing glove and preparation method thereof |
| CN105696324A (en) * | 2016-04-20 | 2016-06-22 | 吴江市泽旺纺织有限公司 | Novel composite high-temperature-resistant and odor-resistant textile material and method for preparing same |
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