JPS6360715A - Heat-resistant cushion material for molding press - Google Patents
Heat-resistant cushion material for molding pressInfo
- Publication number
- JPS6360715A JPS6360715A JP61203790A JP20379086A JPS6360715A JP S6360715 A JPS6360715 A JP S6360715A JP 61203790 A JP61203790 A JP 61203790A JP 20379086 A JP20379086 A JP 20379086A JP S6360715 A JPS6360715 A JP S6360715A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- wet paper
- resistant
- paper
- particles
- 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 36
- 238000000465 moulding Methods 0.000 title claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 41
- 239000002245 particle Substances 0.000 claims abstract description 32
- 229920000642 polymer Polymers 0.000 claims abstract description 30
- 125000003118 aryl group Chemical group 0.000 claims abstract description 24
- 239000012784 inorganic fiber Substances 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 238000001035 drying Methods 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract description 2
- 238000003475 lamination Methods 0.000 abstract description 2
- 230000018044 dehydration Effects 0.000 abstract 2
- 238000006297 dehydration reaction Methods 0.000 abstract 2
- 239000011490 mineral wool Substances 0.000 description 13
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 239000002131 composite material Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000004760 aramid Substances 0.000 description 3
- 229920003235 aromatic polyamide Polymers 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- 230000001747 exhibiting effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Paper (AREA)
- Presses And Accessory Devices Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
(A)産業上の利用分野
本発明は積層板などの成形の際に用いられるプレス成形
機用のクッション材に関するものである。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a cushioning material for a press molding machine used in molding laminates and the like.
(B)従来の技術
プレス成形機用クッション材には、成形加工時かなりの
熱と圧力が加わるので十分な耐熱性とクッション性が要
求される。(B) Prior Art Cushioning materials for press molding machines are required to have sufficient heat resistance and cushioning properties since considerable heat and pressure are applied during the molding process.
従来この分野にはアスベスト繊維からなるシート状、板
状或いは特定形状に成形した複合材料が多く使用されて
きた。しかし、近年、アスベスト繊維の人体に対する悪
影響のためその心配のないロックウール繊維を用いた複
合材料が使われるようになってきた。(例えば特開昭5
9−192795号公報)
(C)解決しようとする問題点
ロックウール複合材料の場合、ロックウール繊維が極細
で、かつ脆いため、プレスをくりかえしているうちに繊
維に起因する粉末が発生し、プレス工程上問題となって
いた。この問題を解決するために、例えばクッヨン材の
両側や、端面に耐熱性の接着剤を用いて別の耐熱性シー
トを貼り付ける方法が取られていた。(特開昭61−6
1839号公報、61−70027号公報)
しかし、この場合、ロックウール複合材料が多くの接着
剤を吸収するため、多量の接着剤を要するうえ、その部
分が固化し、クッション性が悪くなる。又、耐熱性シー
トをシワにならないように貼り付けるには、かなりの熟
練と手間を要する。Conventionally, in this field, composite materials made of asbestos fibers in the form of sheets, plates, or formed into specific shapes have often been used. However, in recent years, composite materials using rock wool fibers, which are free from the harmful effects of asbestos fibers on the human body, have come into use. (For example, JP-A No. 5
9-192795) (C) Problems to be solved In the case of rock wool composite materials, the rock wool fibers are extremely fine and brittle, so during repeated pressing, powder caused by the fibers is generated and the pressing There was a problem with the process. In order to solve this problem, a method has been adopted in which, for example, another heat-resistant sheet is attached to both sides or end faces of the cushion material using a heat-resistant adhesive. (Unexamined Japanese Patent Publication No. 61-6
(No. 1839, No. 61-70027) However, in this case, since the rock wool composite material absorbs a large amount of adhesive, a large amount of adhesive is required, and the area hardens, resulting in poor cushioning properties. Furthermore, it requires considerable skill and effort to attach the heat-resistant sheet without wrinkles.
更に、高温高圧下の繰り返しプレスに耐える満足すべき
特性を持った接着剤が無いなどの問題点があった。Furthermore, there were other problems such as the lack of an adhesive with satisfactory properties that could withstand repeated pressing under high temperature and high pressure.
(D>問題点を解決するための手段
以上のような問題は、クッション材の上下両面及び、も
しくは中間層の任意の場所に、ロックウール成分を含ま
ない耐熱性芳香族系重合体のパルプ状粒子をフィブリッ
ドを主成分とする耐熱性シート層をクッション材製造の
際に、設ければ解決することができる。(D>Means for solving the problem) The above problem can be solved by using a pulp-like heat-resistant aromatic polymer that does not contain rock wool components on both the upper and lower surfaces of the cushioning material and/or any part of the intermediate layer. This problem can be solved by providing a heat-resistant sheet layer containing particles and fibrids as a main component when manufacturing the cushion material.
即ら、本発明におけるクッション材は、ロックウール繊
維と耐熱性芳香族系重合体のパルプ状粒子を90−60
: 10−40重量%の比で混合してなる坪M80−
60g/mの湿紙とロックウール繊維を全く含まない耐
熱性芳香族系重合体のパルプ状粒子と同繊維が100−
50 : 0−50重量%の割合からなる坪量5−30
9/mの湿紙を抄ぎ合わせて少なくとも基体の上下両面
、及び任意の中間層に耐熱性芳香族系重合体のパルプ状
粒子と繊維とからなる耐熱層が来るように、多層積層し
たのち、加熱加圧して一体化することを特徴とする耐熱
性クッション材である。That is, the cushioning material in the present invention contains pulp-like particles of rock wool fiber and heat-resistant aromatic polymer in a ratio of 90-60%.
: Tsubo M80- made by mixing at a ratio of 10-40% by weight
60 g/m of wet paper and pulp-like particles of a heat-resistant aromatic polymer containing no rock wool fibers and 100 g/m of the same fibers.
50: Basis weight 5-30 consisting of a proportion of 0-50% by weight
9/m wet paper is laminated in multiple layers so that a heat-resistant layer consisting of pulp-like particles of a heat-resistant aromatic polymer and fibers is placed on at least the upper and lower surfaces of the substrate and any intermediate layer. , is a heat-resistant cushioning material characterized by being integrated by heating and pressurizing.
従って、出来上がったクッション材としての性能上好ま
しくない接着剤等を全く含んでいない。Therefore, it does not contain any adhesives or the like that are unfavorable in terms of performance as a finished cushioning material.
上記の抄き合わせにおいて上下両面にくる層の力学的強
度を増すために、耐熱性芳香族系重合体のパルプ状粒子
に芳香族ポリアミド繊維を抄紙原料として加える。In order to increase the mechanical strength of the upper and lower layers in the above papermaking process, aromatic polyamide fibers are added to the pulp-like particles of the heat-resistant aromatic polymer as a papermaking raw material.
(E)発明の作用
ロックウールと耐熱性芳香族系重合体のパルプ状粒子を
主成分とするクッション材はアスベスト使用クッション
材の代替として非常に有用であるが、用いたロックウー
ルの弾性率があまりにも高く、また繊維長が短すぎるた
め、使用中にロックウールの粉が出てくるという欠点が
あった。(E) Function of the invention Cushioning materials whose main components are rock wool and pulp-like particles of heat-resistant aromatic polymers are very useful as a substitute for cushioning materials containing asbestos, but the elastic modulus of the rock wool used is Because it was too expensive and the fiber length was too short, it had the disadvantage that rock wool powder came out during use.
今回の抄き合わせにより、その粉の落ちをほぼ完全に防
ぐことが出来るようになる。別々のシートを接着剤を用
いて張り合わせるよりも抄き合わせの方法は、従来の円
網抄式を用いれば簡単に行うことが出来る等の利点があ
る。This combination of papermaking makes it possible to almost completely prevent the powder from falling off. The method of joining sheets together using an adhesive has the advantage that it can be easily carried out using the conventional circular mesh method.
更に、抄ぎ合わせに用いるシー(〜がクッション材中に
用いられている芳香族ポリアミドの繊維及びパルプ状粒
子であるため非常になじみがよくかつ、特別な接着剤(
耐熱性があり、かつ、一定の弾力性を持つもの)を必要
としない。Furthermore, the sheet used for paper binding (~ is the aromatic polyamide fiber and pulp-like particles used in the cushioning material, so it is very compatible with the fibers and pulp-like particles, and the special adhesive (~)
It does not require heat resistance and a certain degree of elasticity.
耐熱性芳香族系重合体のパルプ状粒子単独湿紙、又はパ
ルプ状粒子と耐熱性芳香族系重合体の繊維の混抄紙であ
る耐熱性の湿紙層をクッション材の中間層に設けること
により、厚めのクッション材においても従来弱かった層
間剥離強度も向上させることが出来る。By providing a heat-resistant wet paper layer in the middle layer of the cushioning material, which is a wet paper made solely of pulp-like particles of a heat-resistant aromatic polymer, or a mixed paper made of pulp-like particles and fibers of a heat-resistant aromatic polymer. It is also possible to improve the delamination strength, which has been weak in the past, even in thick cushioning materials.
本発明は微細無機繊維と芳香族系重合体のパルプ状粒子
を使用するものであるが、微細無機繊維と芳香族系重合
体のパルプ状粒子とが弾性率が著しく異なる(前者が後
者よりも弾性率が高い)ことおよび微細前Ia、iIi
維と耐熱性芳香族系重合体のパルプ状粒子とが形状を著
しく異にし、この異種形状の組み合わせにもとづき空隙
率が高められる事の理由により優れたクッション機能を
好ましく具現したものである。The present invention uses fine inorganic fibers and pulp-like particles of an aromatic polymer, but the elastic modulus of the fine inorganic fibers and the pulp-like particles of an aromatic polymer are significantly different (the former is more than the latter high elastic modulus) and fine front Ia, ii
The fibers and the pulp-like particles of the heat-resistant aromatic polymer have significantly different shapes, and this combination of different shapes increases the porosity, which preferably provides an excellent cushioning function.
一般に重合体のみのシートにおいては、同一ポリマーか
らなる繊維とバルブ上粒子であるため、お互いのなじみ
がよく、また、弾性率も無Ia繊維に比べひくいため、
繊維とパルプ状粒子間の空隙が少なくクッション機能も
満足すべきものでない。In general, in a sheet made only of polymers, the fibers and the bulb particles are made of the same polymer, so they are compatible with each other, and the elastic modulus is lower than that of non-Ia fibers.
There are few voids between the fibers and the pulp particles, and the cushioning function is also unsatisfactory.
本発明に言う無機繊維は、ロックウール、セラミツク繊
維、ガラス繊維等であり、繊維径がo、5−’15*、
R維長が70−1000譚のものが用いられる。また、
繊維化の時点で繊維にならないいわゆるショットをふく
まないことが必須である。The inorganic fibers referred to in the present invention include rock wool, ceramic fibers, glass fibers, etc., and have fiber diameters of o, 5-'15*,
Those with an R fiber length of 70-1000 tans are used. Also,
It is essential not to include so-called shot that does not become fibers at the time of fiberization.
ショットが含まれると肌触りが悪くショットの離脱がお
こりやすく、又強度的にもマイナスである。If shots are included, the texture is poor and the shots tend to come off easily, and the strength is also negative.
更にクッション材として使用するとき鏡板を傷つける等
好ましくない。前記繊維径が0.511rt未満では、
得られるクッション材の空隙率が低くなり好ましくない
、一方15IInを越えると、無機繊維が表面から突出
して肌触りが悪くなり好ましくない。また前記繊維長が
70IIn未満では抄紙時の歩留まりが悪く、かつ得ら
れるシートの物性特性が劣り実用的でない。一方繊維長
が10ooII!tを越えると、水中での均一分散性が
著しく不良となりR維の結束が発生し、得られるクッシ
ョン材の厚さ均一性、平滑性が劣り、又、クッション材
のカール等がおこりやすくなる。Furthermore, when used as a cushioning material, it is undesirable as it may damage the end plate. When the fiber diameter is less than 0.511rt,
The resulting cushioning material has a low porosity, which is undesirable. On the other hand, if it exceeds 15 IIn, the inorganic fibers protrude from the surface, making it undesirable to the touch. Furthermore, if the fiber length is less than 70 IIn, the yield during paper making will be poor, and the physical properties of the resulting sheet will be poor, making it impractical. On the other hand, the fiber length is 10ooII! If it exceeds t, the uniform dispersibility in water will be extremely poor and the R fibers will bunch up, resulting in poor thickness uniformity and smoothness of the resulting cushion material, and the cushion material will tend to curl.
本発明に使用する耐熱性芳香族系重合体のパルプ状粒子
は芳香族ポリアミド又は芳香族ポリアミドイミドから構
成されるものである。The pulp-like particles of the heat-resistant aromatic polymer used in the present invention are composed of aromatic polyamide or aromatic polyamide-imide.
本発明に於て使用するパルプ状粒子は、抄紙機を用いて
紙に似た構造物を作ることが出来る多数の突起を有する
繊維状、薄膜状又はリボン状@造の粒子をいい、芳香族
系重合体の溶液を沈澱剤中に導入して、微細な粒子とし
て沈澱させることによって得られる。たとえば、特公昭
37−5732号公報にはその製法の例があるが、該製
法に限定されるものではなく、湿紙形成能を有する前記
重合体粒子で有れば良い。The pulp-like particles used in the present invention refer to fibrous, thin film-like, or ribbon-like particles having a large number of protrusions that can be made into a paper-like structure using a paper machine, and are aromatic particles. It is obtained by introducing a solution of the polymer into a precipitant and precipitating it as fine particles. For example, Japanese Patent Publication No. 37-5732 discloses an example of its production method, but the production method is not limited thereto, and any polymer particles having the ability to form wet paper may be used.
本発明における該ポリマーのパルプ状粒子は後述する試
験法による濾水値が150秒以上、500秒未満の値を
示すものが使用される。該濾水値が160秒以上、40
0秒未満のものがさらに好適である。The pulp-like particles of the polymer used in the present invention are those exhibiting a freeness value of 150 seconds or more and less than 500 seconds according to the test method described below. The drainage value is 160 seconds or more, 40
More preferably, the time is less than 0 seconds.
150秒未満の値を示す粗いパルプ状粒子は繊維長が長
すぎ、無機11維との混合スラリーの分散性が著しく悪
化し、又紙層形成時(抄紙時)、地合いが悪く、物理強
度の悪いシートしか得られない。一方、該濾水値が50
0秒を越える細かいパルプ状粒子では分散性は良好であ
るが、紙層形成性脱水、搾水性が悪く抄紙効率上好まし
いものではなかった。Coarse pulp-like particles exhibiting a value of less than 150 seconds have too long fiber length, and the dispersibility of the slurry mixed with inorganic 11 fibers is significantly deteriorated, and the formation is poor during paper layer formation (paper making), resulting in poor physical strength. I only get bad seats. On the other hand, the filtration value is 50
Fine pulp-like particles exceeding 0 seconds had good dispersibility, but poor paper layer formation, dewatering and water squeezing properties, and were not preferable in terms of papermaking efficiency.
尚、本発明で言う濾水値とは下記の試験法により得られ
るパルプの濾水性を評価する値である。Note that the freeness value in the present invention is a value for evaluating the freeness of pulp obtained by the following test method.
即ち、パルプ状粒子を0.3%の水分散液(20℃)に
調整し、これを1リツトル採取する。このスラリーを内
系102mの円筒容器(底に78メツシユの金網を張っ
である)に移したとき、濾液が500r111得られる
に要する時間を秒で表示したものを濾水値という。That is, the pulp particles are adjusted to a 0.3% aqueous dispersion (20°C), and 1 liter of this is collected. When this slurry is transferred to a cylindrical container with an internal diameter of 102 m (the bottom is lined with a 78-mesh wire mesh), the time required to obtain 500 r111 of filtrate is called the filtration value, expressed in seconds.
本発明の成形プレス用耐熱クッション材は、前述のよう
に、実質的にショットを含まない繊維系が0.5−15
*、繊維長が70−1000mの微細無*gi4維と濾
水値が150秒以上500秒未満の耐熱性芳香族系重合
体のパルプ状粒子とを混合した水性スラリーを湿式抄造
して湿紙を成形し、水分含有率を50−95%に調整し
た湿紙を任意の枚数積層した後、加熱加圧下に脱水乾燥
して一体化することにより得られるが、両者の混合比率
は、微細無機繊維と耐熱性芳香族系重合体のパルプ状粒
子を重量比で50 : 50−95 : 5の範囲で適
宜選択される。As mentioned above, the heat-resistant cushion material for molding presses of the present invention has a fiber system substantially free of shot, with a fiber content of 0.5-15%.
Wet paper is produced by wet papermaking of an aqueous slurry made by mixing fine non-*gi4 fibers with a fiber length of 70 to 1000 m and pulp-like particles of a heat-resistant aromatic polymer with a freeness value of 150 seconds to less than 500 seconds. It is obtained by laminating any number of sheets of wet paper with a moisture content adjusted to 50-95%, and then dehydrating and drying them under heat and pressure to integrate them. The weight ratio of the fibers to the pulp-like particles of the heat-resistant aromatic polymer is appropriately selected within the range of 50:50-95:5.
本発明によれば、耐熱性芳香族系重合体のパルプ状粒子
と無機繊維とを混合して水性スラリーとして、長網式、
円網式、傾斜型ワイヤー式等の抄紙機を用いて湿紙を形
成する。According to the present invention, pulp-like particles of a heat-resistant aromatic polymer and inorganic fibers are mixed to form an aqueous slurry,
Wet paper is formed using a paper machine such as a cylinder type or an inclined wire type.
吸入又は圧搾によって、湿紙の水分含有率を50−95
%とする。湿紙の水分含有率が50%よりすくないと、
湿紙を積層して乾燥した場合、紙層間の接着が弱く、一
体のクッション材とならない。又水分含有率が95%よ
り多いと、湿紙が崩れやすり、vi層が困難であるし、
加圧加熱中に亀裂が生ずる。The moisture content of wet paper is reduced to 50-95 by inhalation or squeezing.
%. If the moisture content of wet paper is less than 50%,
When wet paper is layered and dried, the adhesion between the paper layers is weak and the paper does not form an integrated cushioning material. Also, if the moisture content is more than 95%, the wet paper will crumble and it will be difficult to form the VI layer.
Cracks occur during pressure heating.
以上のようにして紙層間の接着が十分性われ均一で一体
化した構成を有し、クッション機能、機械的強度、耐熱
性及び耐久性の優れたクッション材が得られる。As described above, a cushioning material with sufficient adhesion between paper layers, a uniform and integrated structure, and excellent cushioning function, mechanical strength, heat resistance and durability can be obtained.
(F)実施例
耐熱性芳香族系重合体のパルプ状粒子30部と平均繊維
長250IIft、平均太ざ4゜11Inのショットを
含まない微細のロックウール繊維70部とを混合し、固
形分温度1%の水性スラリーを作る。(F) Example 30 parts of pulp-like particles of a heat-resistant aromatic polymer and 70 parts of shot-free fine rock wool fibers having an average fiber length of 250IIft and an average diameter of 4°11In were mixed, and the solid content temperature Make a 1% aqueous slurry.
この水性スラリーから円網抄紙機にて湿紙を形成させる
際に耐熱性芳香族系重合体のパルプ状粒子のみからなる
坪f!15g/mの湿紙を抄き合わせる。この複合湿紙
を第1図に示すように耐熱性芳香族系重合体のパルプ状
物体のみからなる層が上下両面にくるように必要枚数積
層した後4ONy/crA、140’Cのホットプレス
にて加圧加熱乾燥し一体化してボード状物体を得た。When a wet paper is formed from this aqueous slurry using a cylinder paper machine, the tsubo f! Mix 15 g/m wet paper. As shown in Fig. 1, the required number of sheets of this composite wet paper were laminated so that the layers consisting only of the pulp-like material of the heat-resistant aromatic polymer were on both the top and bottom surfaces, and then hot pressed at 4ONy/crA, 140'C. They were dried under pressure and heat to obtain a board-like object.
比較例1
従来と同じ耐熱性芳香族系重合体のパルプ状物体とロッ
クウール繊維のみからなる混抄湿紙からなるクッション
材(特開昭59−192795号公報〉を比較例として
もちいた。Comparative Example 1 A cushioning material (Japanese Unexamined Patent Publication No. 192795/1989) made of a mixed wet paper made of only rock wool fibers and a pulp-like material of a heat-resistant aromatic polymer as the conventional one was used as a comparative example.
比較例2
更に、比較例1に用いるクッション材にメラミン処理し
た綾織りノーメックス布をニトリルゴム系の接着剤を用
いて加熱一体化したものを用いた。Comparative Example 2 Further, as the cushioning material used in Comparative Example 1, a melamine-treated twill weave Nomex cloth was heated and integrated using a nitrile rubber adhesive.
以上のクッション材をエポキシ樹脂積層板のプ示す。The above cushioning material is an epoxy resin laminate plate.
(G)発明の効果
本発明によれば、比較的簡単に、高温高圧下、繰り返し
プレスに耐える、満足すべき特性を持ったクッション材
を得ることが出来る。(G) Effects of the Invention According to the present invention, it is possible to relatively easily obtain a cushioning material having satisfactory properties that can withstand repeated pressing at high temperatures and pressures.
第1図は、本発明の一実施例の積層後の湿紙の横断面を
示す略図である。
革LJD
□−ラ
□□−ラ
□□□□□□□□□−4”
一27埴しフ・1文゛牽し″+単執1
1 521キケノ&
↓FIG. 1 is a schematic diagram showing a cross section of a wet paper web after lamination according to an embodiment of the present invention. Leather LJD □-ra□□-ra□□□□□□□□□-4” 127 Hani Shifu・1 sentence゛To pull”+Single bond 1 1 521 Kikeno & ↓
Claims (1)
μm繊維長が70−1000μmの微細無機繊維と、濾
水値が150秒以上500秒未満の耐熱性芳香族系重合
体のパルプ状粒子とを混合した水性スラリーから湿式抄
造した湿紙と無機繊維を含まない耐熱性重合体からなる
湿紙を成形し、該湿紙の水分含有率を50−95%に調
整した後各湿紙を任意の枚数積層し、加熱、加圧下に脱
水乾燥し、一体化してなる成形プレスクッション用耐熱
クッション材。 2)耐熱性重合体からなる湿紙が耐熱性芳香族系重合体
のパルプ状粒子単独湿紙、又はパルプ状粒子と耐熱性芳
香族系重合体の繊維の混抄紙である特許請求の範囲第1
項記載のクッション材。 3)耐熱性湿紙をクッション材の上下両面に設けた特許
請求の範囲第1−2項記載のクッション材。 4)耐熱性湿紙をクッション材の上下両面及び中間層に
もうけた特許請求の範囲第1−2項記載のクッション材
。[Claims] 1) Fiber diameter that does not substantially contain shot is 0.5-15
Wet paper and inorganic fibers made from an aqueous slurry made by mixing fine inorganic fibers with a fiber length of 70-1000 μm and pulp-like particles of a heat-resistant aromatic polymer with a freeness value of 150 seconds or more and less than 500 seconds. After molding a wet paper made of a heat-resistant polymer that does not contain any Heat-resistant cushioning material for integrally molded press cushions. 2) The wet paper made of a heat-resistant polymer is a wet paper made solely of pulp-like particles of a heat-resistant aromatic polymer, or a mixed paper of pulp-like particles and fibers of a heat-resistant aromatic polymer. 1
Cushion material as described in section. 3) The cushioning material according to claims 1-2, wherein heat-resistant wet paper is provided on both upper and lower surfaces of the cushioning material. 4) The cushioning material according to claims 1-2, wherein heat-resistant wet paper is provided on both upper and lower surfaces of the cushioning material and in the middle layer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61203790A JPH068016B2 (en) | 1986-09-01 | 1986-09-01 | Heat resistant cushion material for molding press |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61203790A JPH068016B2 (en) | 1986-09-01 | 1986-09-01 | Heat resistant cushion material for molding press |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6360715A true JPS6360715A (en) | 1988-03-16 |
JPH068016B2 JPH068016B2 (en) | 1994-02-02 |
Family
ID=16479796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61203790A Expired - Lifetime JPH068016B2 (en) | 1986-09-01 | 1986-09-01 | Heat resistant cushion material for molding press |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH068016B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07207600A (en) * | 1993-12-29 | 1995-08-08 | Utsui:Kk | Production of molded article produced by paper-making procedure |
JPH07229097A (en) * | 1993-07-07 | 1995-08-29 | Yamauchi Corp | Cushioning material for molding press and its production |
-
1986
- 1986-09-01 JP JP61203790A patent/JPH068016B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07229097A (en) * | 1993-07-07 | 1995-08-29 | Yamauchi Corp | Cushioning material for molding press and its production |
JPH07207600A (en) * | 1993-12-29 | 1995-08-08 | Utsui:Kk | Production of molded article produced by paper-making procedure |
Also Published As
Publication number | Publication date |
---|---|
JPH068016B2 (en) | 1994-02-02 |
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