JPS6353031A - Heat-resistant one-sided coated sheet and manufacture thereof - Google Patents
Heat-resistant one-sided coated sheet and manufacture thereofInfo
- Publication number
- JPS6353031A JPS6353031A JP19781786A JP19781786A JPS6353031A JP S6353031 A JPS6353031 A JP S6353031A JP 19781786 A JP19781786 A JP 19781786A JP 19781786 A JP19781786 A JP 19781786A JP S6353031 A JPS6353031 A JP S6353031A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- resistant
- base fabric
- water
- sided
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000004744 fabric Substances 0.000 claims description 46
- 239000000203 mixture Substances 0.000 claims description 16
- 238000012856 packing Methods 0.000 claims description 14
- 239000011342 resin composition Substances 0.000 claims description 12
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 10
- 229910052731 fluorine Inorganic materials 0.000 claims description 10
- 239000011737 fluorine Substances 0.000 claims description 10
- 239000012210 heat-resistant fiber Substances 0.000 claims description 9
- 230000035515 penetration Effects 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 description 28
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 27
- 239000004810 polytetrafluoroethylene Substances 0.000 description 27
- 238000000034 method Methods 0.000 description 21
- 238000000576 coating method Methods 0.000 description 20
- 239000010410 layer Substances 0.000 description 17
- 239000011248 coating agent Substances 0.000 description 16
- 230000001070 adhesive effect Effects 0.000 description 13
- 238000001035 drying Methods 0.000 description 11
- 239000000945 filler Substances 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 10
- 238000012545 processing Methods 0.000 description 10
- 239000011521 glass Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 239000000835 fiber Substances 0.000 description 7
- 238000011049 filling Methods 0.000 description 6
- 239000010408 film Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000002562 thickening agent Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000007665 sagging Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 4
- 230000037303 wrinkles Effects 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 238000009499 grossing Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
- 238000003851 corona treatment Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- PYVHTIWHNXTVPF-UHFFFAOYSA-N F.F.F.F.C=C Chemical compound F.F.F.F.C=C PYVHTIWHNXTVPF-UHFFFAOYSA-N 0.000 description 1
- 229920002449 FKM Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 239000013305 flexible fiber Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Manufacturing Of Multi-Layer Textile Fabrics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Laminated Bodies (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は耐熱性片面被覆シート及びその製造法に関する
。さらに詳しくは基布の片面にのみ水分散弗素系樹脂組
成物を被覆せしめてなる耐熱性片面被覆シート及びその
製造法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a heat-resistant single-sided coated sheet and a method for producing the same. More specifically, the present invention relates to a heat-resistant single-sided coated sheet in which only one side of a base fabric is coated with a water-dispersed fluororesin composition, and a method for producing the same.
(従来の技術)
耐熱性離型シートは種々の用途に広く利用されるように
なってきており、特に弗素系樹脂の中でもポリテトラフ
ルオロエチレン(PTFE)は非粘着性、低摩擦性、耐
熱性等に優れ、型造時における物質ロスの減少、清浄に
要する時間の短縮、作業能率ならびに製品品質の改善等
にみられる利点を有し、くっつき易い物質を取扱う作業
に利用されている。(Prior art) Heat-resistant release sheets have come to be widely used for various purposes, and among fluorine-based resins, polytetrafluoroethylene (PTFE) is particularly popular for its non-adhesive, low-friction, and heat-resistant properties. It has advantages such as reducing material loss during mold making, shortening the time required for cleaning, improving work efficiency and product quality, and is used in operations that handle materials that tend to stick together.
そして、PTFEを用いる場合、表面にPTFEフィル
ム又はシートを機械的方法で取り付ける方法としては、
例えばガラス繊維織布と4弗化エチレン樹脂シートとの
複合体の連続!!J造方法、特開昭57−189845
号等が提案されている。When using PTFE, the method of mechanically attaching a PTFE film or sheet to the surface is as follows:
For example, a continuous composite of glass fiber woven fabric and tetrafluoroethylene resin sheet! ! J construction method, JP-A-57-189845
No. etc. have been proposed.
また、PTFEエナメルを被覆する方法も公知であるが
、PTFEエナメルは、金属表面に薄いフィルムを必要
とする場合に用いられ、接着強度や、耐熱性、耐薬品性
等の特徴があるが、一方耐摩耗性に乏しく、塗るのに手
間がかかり、しかも高温で焼き付は処理を行なわねばな
らない等の欠点がある。次に、PTFEを用いた耐熱性
離型シートとしては一般にPTFEディスパージョン含
浸ガラスクロスを用いる方法が採用されている。In addition, a method of coating with PTFE enamel is also known, but PTFE enamel is used when a thin film is required on a metal surface, and has characteristics such as adhesive strength, heat resistance, and chemical resistance. It has drawbacks such as poor abrasion resistance, time-consuming application, and the need to treat burn-in at high temperatures. Next, as a heat-resistant release sheet using PTFE, a method using a glass cloth impregnated with a PTFE dispersion is generally adopted.
しかし、このようなPTFEディスパージョンによる含
浸、或いは前記の如きフィルムの貼り付けの場合におい
ても、フィルムの片面を金属ナトリウムで処理するか、
又はコロナ放電処理、表面のスチレングラフト処理等の
方法で処理した後、接着剤で貼り付けるか、又はゴムの
場合には上記処理したPTFEフィルムの上に未加硫ゴ
ムを置き、加熱、加圧して加硫すると同時に接着させる
方法がとられている。However, even in the case of impregnation with such a PTFE dispersion or the pasting of a film as described above, one side of the film is treated with metallic sodium or
Or, after treating it with a method such as corona discharge treatment or styrene graft treatment on the surface, it is pasted with an adhesive, or in the case of rubber, unvulcanized rubber is placed on top of the above-treated PTFE film, heated and pressurized. The method used is to vulcanize the material and adhere it at the same time.
(発明の解決しようとする問題点)
上記PTFEディスパージョン含浸ガラスクロスを用い
る方法では、ガラスクロスをディスパージョンに浸漬し
、引上げて乾燥し焼成するが、このPTFE分散液を一
度に厚く付着させると乾燥によってマッドクラックを発
生し焼付は処理してもなくならず、ピンホールになるの
で1回当たりの付着量を厚くすることはできず、浸漬、
乾燥、焼付けを多数回繰り返して所定の厚みにする。ま
た、2回目以降は分散液を適当に薄めたり、必要により
活性剤を添加したりして調整することも行なわれている
。このため、通常浸透が起こり易いPTFE分散液は使
用されず、該分散液にイソプロパツール、界面活性剤等
の如き増粘剤を添加して粘度を一般に500〜2000
0センチポイズの範囲に調整することも行なわれている
。しかし該分散液の粘度が高まれば被処理基布への浸透
現象は低下するが、一方、分散液の取扱い、作業性が悪
くなり、該基布への付着量が増加してコスト高となるの
みならず、処理表面の状態を悪くし、タレ、亀裂、発泡
等の原因となる難点がある。(Problems to be Solved by the Invention) In the method using the glass cloth impregnated with PTFE dispersion, the glass cloth is immersed in the dispersion, pulled up, dried, and fired, but if the PTFE dispersion is applied thickly at once, Mud cracks occur due to drying, and the burn-in does not go away even after treatment, and it becomes pinholes, so it is not possible to increase the amount of adhesion per coat.
Drying and baking are repeated many times to achieve the desired thickness. Further, from the second time onwards, the dispersion liquid is appropriately diluted and an activator is added as necessary to adjust the dispersion liquid. For this reason, PTFE dispersions, which tend to penetrate easily, are not used, and thickeners such as isopropanol, surfactants, etc. are added to the dispersions to increase the viscosity, generally from 500 to 2,000.
Adjustment to a range of 0 centipoise has also been carried out. However, if the viscosity of the dispersion liquid increases, the phenomenon of penetration into the base fabric to be treated decreases, but on the other hand, handling and workability of the dispersion liquid worsens, and the amount of adhesion to the base fabric increases, resulting in higher costs. In addition, it has the disadvantage that it deteriorates the condition of the treated surface and causes sagging, cracking, foaming, etc.
このように、PTFEディスパージョン含浸ガラスクロ
スは、PTFE分散液を多数回、含浸、乾燥、焼付は処
理して形成されるが、基布の他面への浸透、浸出や、タ
レ、亀裂、発泡等を生じ易く、極めて熟練を要し、取扱
い作業性のよくないものであった。さらに、上記の含浸
両面処理を施こしたような場合、裏面に粘着処理又は接
着処理等の後加工を施こす際、コロナ放電処理などの煩
雑な加工を行なわなければ接着或いは禎層が困難であっ
た。このように含浸両面処理はPTFE分1汝液の非粘
着性を得る方法として従来より採用されているが、以後
の粘着処理等の如き加工性、取扱いにおいて手数を要し
、かつその非粘着性も片面のみが利用されるに止まり、
高コストとなり経済性の悪いものであった。このため片
面にのみPTFE分散液が低コストで効率よく層着され
た耐熱性離型シートが望まれていた。In this way, PTFE dispersion-impregnated glass cloth is formed by impregnating, drying, and baking the PTFE dispersion many times, but it does not cause penetration to other surfaces of the base fabric, leaching, sagging, cracking, or foaming. etc., required extremely high skill, and was not easy to handle. Furthermore, in cases where the above-mentioned impregnated double-sided treatment is applied, when performing post-processing such as adhesive treatment or adhesion treatment on the back side, it is difficult to adhere or remove the adhesive layer unless complicated processing such as corona discharge treatment is performed. there were. In this way, impregnating double-sided treatment has been conventionally adopted as a method for obtaining non-adhesive properties of PTFE-based liquids, but it requires time and effort in processing and handling such as subsequent adhesive treatment, and the non-adhesive properties However, only one side is used,
It was expensive and uneconomical. For this reason, there has been a desire for a heat-resistant release sheet in which a PTFE dispersion is efficiently layered on only one side at low cost.
また、PTFE分散液による加工処理で従来片面のもの
が得られなかったのは、上記の如<PTFEが粉体、フ
ィルム、或いは低粘度の水性ディスパージョンとして供
給されており、いずれも高融点のため、平滑、かつ織編
物基布やシートと樹脂の接着力の強い製品をつくるとき
、約380 ’Cの高温で焼付ける必要があるが、粉体
やフィルムの場合は高温、高圧でのltim物基布への
圧着が必要であり、水性ディスパージョンの場合は低粘
度のため織編物基布の裏面へ浸透してしまうという難点
があったためである。Furthermore, the reason why single-sided PTFE dispersions could not be obtained through processing using PTFE dispersions is that PTFE is supplied as powder, film, or low-viscosity aqueous dispersions, all of which have high melting points. Therefore, when producing products that are smooth and have strong adhesion between woven or knitted fabrics or sheets and resin, it is necessary to bake them at a high temperature of about 380'C, but in the case of powders and films, it is necessary to bake them at high temperatures and pressures. This is because it requires pressure bonding to the base fabric, and in the case of an aqueous dispersion, its low viscosity causes it to penetrate into the back side of the woven or knitted base fabric.
このため、例えば特開昭和59−14950号。For this reason, for example, Japanese Patent Application Laid-open No. 59-14950.
ポリテトラフルオロエチレン被覆布の製造方法等が提案
されており、ここではPTFEの両面異種被覆ならびに
片面被覆が開示されているが、塗布する場合には垂直方
向に上昇する耐熱性布の表面に接してスリット・アプリ
ケ−クー等の装置を取り付け、かつPTFE分散液被覆
組成物の塗布量を制御する等の複雑な塗布機構及び装置
を必要とする。また、かかる機構及び装置等を使用して
もPTFE分散液被覆用組成物の粘度が50センチボイ
ズ以下の如き、例えば増粘剤を添加しない市販のPTF
E水性分散液等の使用は布への浸透性がよいため使用が
困難であり、該組成物の粘度等の選択範囲が限られる。A method for manufacturing a polytetrafluoroethylene coated cloth has been proposed, and here a double-sided dissimilar coating of PTFE and a single-sided coating are disclosed. This method requires a complicated coating mechanism and device, such as installing a device such as a slit applicator and controlling the amount of the PTFE dispersion coating composition applied. In addition, even if such a mechanism and apparatus are used, the viscosity of the PTFE dispersion coating composition is 50 centivoise or less, for example, commercially available PTF without the addition of a thickener.
E. It is difficult to use an aqueous dispersion because of its good permeability into cloth, and the range of selection of the viscosity of the composition is limited.
したがって、これによって例え片面被覆が可能であると
しても、装置、取扱い、作業性、コスト面等からみてP
TFE分散液による片面被覆に通した経済性、効率性の
ぼれた方法とはいえない。Therefore, even if single-sided coating is possible, it is disadvantageous in terms of equipment, handling, workability, cost, etc.
This method cannot be said to be economical or efficient compared to single-sided coating with a TFE dispersion.
本発明は上記の如き従来の問題点ならびに片面処理にお
ける諸問題を解消するため種々検討の結果到達したもの
であり、耐熱性繊維からなる織編物基布の片面又は両面
に水分散弗素系樹脂組成物の浸透を阻止し得る目詰め層
が形成されると共に、該基布の片面に水分散弗素系樹脂
組成物を被覆してなる耐熱性片面被覆シート及びその製
造法を提供することを目的とする。また、本発明の他の
目的は耐熱性繊維からなる織編物基布に水分散弗素系樹
脂組成物を片面に被覆した非粘着性ならびに平滑性に優
れた片面被覆シートを簡易、且つ効率的に低コストで得
ようとすることにある。The present invention was achieved as a result of various studies in order to solve the above-mentioned conventional problems as well as various problems in single-sided processing. It is an object of the present invention to provide a heat-resistant single-sided coated sheet in which a packing layer capable of preventing penetration of substances is formed and one side of the base fabric is coated with a water-dispersed fluorine-based resin composition, and a method for producing the same. do. Another object of the present invention is to easily and efficiently produce a single-sided coated sheet with excellent non-adhesiveness and smoothness, in which a woven or knitted base fabric made of heat-resistant fibers is coated on one side with a water-dispersed fluororesin composition. It's about trying to get something at a low cost.
本発明において用いられる耐熱性繊維は、無機及び有機
繊維及びこれらの組合せからなるものを用いることがで
き、たとえば、ガラス繊維、炭素繊維、アスベスト繊維
、全屈繊維等の如き耐熱性無機繊維、ポリイミド系繊維
、芳香族ポリアミド系繊維、芳香族ポリエステル系繊維
等の如き耐熱性有機繊維及びこれらの組合せからなるW
i編物基布が適当である。また、これらの素材からなる
不織布、その他シート類であってもよい。The heat-resistant fibers used in the present invention can be made of inorganic and organic fibers or combinations thereof, such as heat-resistant inorganic fibers such as glass fibers, carbon fibers, asbestos fibers, fully flexible fibers, and polyimide fibers. W consisting of heat-resistant organic fibers such as polyester fibers, aromatic polyamide fibers, aromatic polyester fibers, and combinations thereof
A knitted base fabric is suitable. Alternatively, nonwoven fabrics or other sheets made of these materials may be used.
上記の耐熱性基布は水分散弗素系樹脂組成物を被覆した
後、約250℃〜500°Cの焼付は工程でも変形成い
は熱分解等による物性低下を生じない条件を備えるもの
であり、これらを適宜選択することができる。The above-mentioned heat-resistant base fabric is baked at approximately 250°C to 500°C after being coated with the water-dispersed fluororesin composition, which is a condition that does not cause deterioration of physical properties due to deformation or thermal decomposition during the process. , these can be selected as appropriate.
次に、本発明において、水分散弗素系樹脂組成物はテト
ラフルオロエチレンの単独重合体の他、ポリテトラフル
オロエチレンを主成分とする共重合体を用いることがで
きる。これらの水性ディスパージョンを多数回コーティ
ング、乾燥、焼付は処理を繰り返し前記耐熱性繊維から
なる織編物基布の上に被覆される。また、必要により、
ポリアルキレンオキサイド樹脂等の水溶性高分子の一種
又は二種以上を適宜組合せた増粘剤を適宜選択し用いる
こきができ、さらに、アルミナ、チタン等の無機材料を
該分散液に添加することもできる。Next, in the present invention, in addition to a homopolymer of tetrafluoroethylene, a copolymer having polytetrafluoroethylene as a main component can be used as the water-dispersed fluororesin composition. These aqueous dispersions are coated on the woven or knitted base fabric made of the heat-resistant fibers by repeating the coating, drying, and baking processes many times. In addition, if necessary,
Thickeners made of one or more water-soluble polymers such as polyalkylene oxide resins can be appropriately selected and used, and inorganic materials such as alumina and titanium can also be added to the dispersion. can.
また、本発明において、耐熱性基布の片面又は両面での
目詰め処理に用いる充填剤としては、該基布での焼付は
工程において物性低下を生じない条件が必要とされるが
、例えば、4弗化エチレン、6弗化プロピレン及び2弗
化ビニリデンの共重合エラストマー等を有機溶剤に熔解
した高粘度に調整したもの、或いはアルミナ、酸化チタ
ン等の無機物にバインダーとして無機及び有機物を添加
した高粘度のもの等を用い、該基布の表面に目詰め層を
形成するよう被覆する。また、目詰め層として高粘度に
予め調整した水分散弗素系樹脂組成物を用いることもで
きる。In addition, in the present invention, the filler used in the packing treatment on one or both sides of the heat-resistant base fabric requires conditions that do not cause deterioration of physical properties during the baking process on the base fabric. Copolymerized elastomers of ethylene tetrafluoride, propylene hexafluoride, and vinylidene difluoride are dissolved in organic solvents and adjusted to high viscosity, or high-viscosity products are prepared by adding inorganic and organic substances as binders to inorganic substances such as alumina and titanium oxide. Using a viscous material, etc., the surface of the base fabric is coated to form a packing layer. Furthermore, a water-dispersed fluororesin composition whose viscosity has been adjusted in advance to have a high viscosity can also be used as the packing layer.
以下本発明の一実施例を図面について説明する。An embodiment of the present invention will be described below with reference to the drawings.
第1図は本発明にかかる耐熱性片面被覆シートの部分拡
大略示図、第2図は別実施例である。FIG. 1 is a partially enlarged schematic diagram of a heat-resistant single-sided coated sheet according to the present invention, and FIG. 2 is another embodiment.
第1図において、1は耐熱性片面被覆シート本体であり
、耐熱性繊維基布2は経糸3および緯糸4からなり、そ
の表面片側には4弗化エチレン、6弗化プロピレン及び
2弗化ビニリデンの共重合エラストマーなどを有機溶剤
に熔解した高粘度の充填剤5を塗布し、前記経糸3およ
び緯糸4の空隙部6を充填した目詰め層7が形成されて
いる。In FIG. 1, 1 is a heat-resistant single-sided coated sheet body, and a heat-resistant fiber base fabric 2 is made up of warp threads 3 and weft threads 4, and one side of its surface is coated with tetrafluoroethylene, hexafluoropropylene, and divinylidene difluoride. A filling layer 7 is formed by applying a highly viscous filler 5 made by dissolving a copolymerized elastomer or the like in an organic solvent, and filling the voids 6 of the warp threads 3 and weft threads 4.
次に該目詰め層70表面にはPTFE水性ディスパージ
ョンの如き水分散弗素系樹脂組成物8を被覆した後、乾
燥、焼成処理した被覆層9が層着された概略構成となっ
ている。Next, the surface of the packing layer 70 is coated with a water-dispersed fluorine-based resin composition 8 such as an aqueous PTFE dispersion, and then a coating layer 9 which is dried and fired is deposited thereon.
かかる構成よりして、耐熱性繊維基布2の表面片側に低
粘度の水分散弗素系樹脂組成物8で被覆され、さらに2
回目の被覆では更にその粘度を低く調整される場合があ
っても、表面上に形成した目詰め屓7が介在するため、
従来基布の裏面側まで毛細管現象により該組成物8が浸
透又は浸出したりする難点は解消され、操業上もかかる
弗素系樹脂組成物8の前記基布2の裏面側への浸透等の
障害を全く防止し得る。このため、表面片側に多数回の
被覆処理が行なわれても裏面片側への浸透等は起こらず
、増粘剤を使用し該分散液の粘度を高い範囲に調節する
等の作業を必要としない。With this configuration, one side of the surface of the heat-resistant fiber base fabric 2 is coated with the low-viscosity water-dispersed fluorine-based resin composition 8, and the 2
Even though the viscosity may be adjusted to a lower level in the second coating, since the packing layer 7 formed on the surface is present,
The conventional problem of the composition 8 permeating or leaching out to the back side of the base fabric due to capillary action has been solved, and there are no operational obstacles such as penetration of the fluorine-based resin composition 8 to the back side of the base fabric 2. can be completely prevented. Therefore, even if one side of the front surface is coated multiple times, penetration into the back side will not occur, and there is no need to use a thickener to adjust the viscosity of the dispersion to a high range. .
また、第2図に示す如(、目詰め眉7を片面のみならず
両面に被覆した後、そのいずれかの片面に水分散弗素系
樹脂組成物8の被覆層9を形成せしめるか、或いは片面
にのみ目詰め層7を設け、他の片面に該樹脂組成物8の
被rit層9を形成せしめることもできる。さらに、必
要により、これら充愼処理する目詰め層7を表面片側に
比較的粗な状態に形成したような場合には、上記の如き
増粘剤により粘度を関節した該組成物8を適宜組合せて
使用することもできる。また、目詰め層7に応じ、たと
えば、マグネシア、アルミナ等の充填物質を添加するこ
とができ、また、共重合エラストマーの場合はこれを加
硫することによって不溶、不融性等を付与せしめるか、
或いは耐熱、耐油性ならびに強力を向上せしめることが
できる。In addition, as shown in FIG. 2 (after coating not only one side but both sides of the filling eyebrows 7), a coating layer 9 of the water-dispersed fluorine-based resin composition 8 is formed on one of the sides, or It is also possible to provide the packing layer 7 only on one side, and form the rit layer 9 of the resin composition 8 on the other side.Furthermore, if necessary, the packing layer 7 to be filled may be formed on one side of the surface relatively. When the composition 8 is formed in a rough state, the viscosity of the composition 8 can be increased by adjusting the viscosity with a thickener such as those described above. A filler material such as alumina can be added, and in the case of a copolymerized elastomer, it can be vulcanized to make it insoluble, infusible, etc.
Alternatively, heat resistance, oil resistance, and strength can be improved.
次に、第3図は本発明方法の一実施例を示す装置の概略
説明図である。第3図において、耐熱性基布2は巻出し
ロール10よりアキュム装置11を経て皺伸ばしロール
12により該基布2の皺を除去した後、ガイドロール1
3を経て送込みロール14に導入される。次に、ベッド
15に載置せしめながら水平方向に該基布2を走行せし
め、ナイフドクター16により充填剤5をコーティング
し、目詰め層7を形成せしめる。続いて、該基布2を水
平方向に走行せしめながら、第1室の乾燥炉17ならび
に第2室の乾燥炉18で乾燥を行ない、さらに次の第3
室の焼成炉19で焼成処理を行なう。続いて、上記の如
き処理を施した該基布2を冷却部20に導き、空冷部2
1ならびに水冷部22において冷却され、巻取りロール
23に巻き取られる。Next, FIG. 3 is a schematic explanatory diagram of an apparatus showing an embodiment of the method of the present invention. In FIG. 3, the heat-resistant base fabric 2 is passed from an unwinding roll 10 to an accumulating device 11, and after the wrinkles of the base fabric 2 are removed by a wrinkle smoothing roll 12, a guide roll 1
3 and then introduced into the feed roll 14. Next, the base fabric 2 is run horizontally while being placed on a bed 15, and the filler 5 is coated with a knife doctor 16 to form a packing layer 7. Next, while running the base fabric 2 in the horizontal direction, it is dried in the drying oven 17 in the first chamber and the drying oven 18 in the second chamber.
A firing process is performed in a firing furnace 19 in the chamber. Subsequently, the base fabric 2 that has been treated as described above is led to the cooling section 20, and the air cooling section 2
1 and a water cooling section 22, and then wound onto a winding roll 23.
本発明の方法においては、上述の如(耐熱性基布2を水
平方向に走行せしめながら、皺伸ばし等の前処理串備工
程を経て、ナイフコーターにより、まず充填剤5による
目詰め層7が層着される。次いで、巻き取られた該基布
2の片面又は両面に水分散弗素系樹脂組成物8を形成せ
しめるが、いずれも前記の充填剤5による目詰め層7を
形成したのと同一の装置を反(9使用できる利点があり
、同一の装置を使用して、乾燥、焼成等の加工条件を適
宜設定し、効率的に被覆処理を行なうことができる。In the method of the present invention, as described above (while running the heat-resistant base fabric 2 in the horizontal direction, the packing layer 7 with the filler 5 is first applied using a knife coater through a pretreatment process such as smoothing out wrinkles). Next, a water-dispersed fluorine-based resin composition 8 is formed on one or both sides of the wound base fabric 2, but in both cases, the filling layer 7 with the filler 5 is formed. There is an advantage that the same apparatus can be used for coating, and the coating process can be carried out efficiently by setting processing conditions such as drying and baking as appropriate using the same apparatus.
したがって、本発明の方法では、片面又は両面に充填剤
5でもって目詰め層7を効率的に形成することかでき、
さらに、そのいずかの片面にどのような粘度の水分散弗
素系樹脂組成物8でも通用して被覆処理を行なうことが
できるため、比較的低粘度の該樹脂組成物8を用い、1
回ないし多数回被覆を行なうこの種被覆処理工程での従
来の障害を全く解消することができる。また、上記の如
き装置に所望の加工条件を設定し、反復して同一の装置
を使用して効率的に被覆加工処理を行なうことができる
点に本発明方法の特徴がある。Therefore, in the method of the present invention, the packing layer 7 can be efficiently formed with the filler 5 on one or both sides,
Furthermore, since the water-dispersed fluororesin composition 8 of any viscosity can be used to coat one side of the resin composition 8, the resin composition 8 having a relatively low viscosity can be used to coat one side.
The conventional problems associated with coating processes of this type, which involve multiple or multiple coatings, can be completely eliminated. Further, the method of the present invention is characterized in that desired processing conditions can be set in the above-mentioned apparatus and coating processing can be carried out efficiently by repeatedly using the same apparatus.
(実施例) 以下、本発明の一実施例について説明する。(Example) An embodiment of the present invention will be described below.
実施例1
市販ガラス・りoス、130g/n?、中105印を用
い、下記配合からなる充填剤をもって、第3図に示した
装置を使用し、該クロスを水平方向に走行せしめながら
、該ガラス・クロスの上側片面にコーティングを施こし
た後、第1室の乾燥炉では100℃〜160℃、次の第
2室の乾燥炉では250℃〜300℃、10m/分の速
度で乾燥を行なった。付着量は25g/r+(であった
。続いて、次の第3室の焼成炉では250℃〜320
”Cで焼成処理を行なった後、冷却部で冷却し、巻取り
ロールに巻き取った。Example 1 Commercially available glass glass, 130g/n? , using the medium 105 mark and a filler having the following composition, using the apparatus shown in Figure 3, and coating the upper side of the glass cloth while running the cloth in the horizontal direction. Drying was carried out at 100° C. to 160° C. in the drying oven in the first chamber, and at 250° C. to 300° C. in the drying oven in the second chamber at a speed of 10 m/min. The adhesion amount was 25g/r+ (.Subsequently, in the next firing furnace in the third chamber, the temperature was 250°C to 320°C.
After the firing process was carried out at C, it was cooled in a cooling section and wound up on a winding roll.
充填剤配合
弗素ゴム viton(デュポン)100重量部加硫剤
diakNci3 (〃 ) 1金尿酸化物
MgO5
1容 剤 MEK
2 0 0次いで、同じく第3図に示した装
置を使用し、水分散弗素系樹脂組成物、 TEFLON
30− J (三井デュポンフロロケミカル製)を用い
て、粘度15〜20センチポイズに調整し、ナイフコー
ターでコーティングを行ない、続いて、該クロスを水平
方向に走行せしめながら、第1室、150’c、第2室
、200℃、第3室、300°C〜370 ’c、速度
10m/分の加工条件で、これを4回繰り返し被覆処理
を行ない、付着量23 g / mの被覆層を形成した
。Filler compounded fluororubber Viton (DuPont) 100 parts by weight Vulcanizing agent diakNci3 (〃) 1 Gold urine oxide MgO5 1 volume Agent MEK
200 Next, using the same apparatus shown in FIG. 3, a water-dispersed fluorine-based resin composition, TEFLON
30-J (manufactured by DuPont Mitsui Fluorochemicals), the viscosity was adjusted to 15 to 20 centipoise, and coating was performed using a knife coater. Subsequently, while running the cloth horizontally, the first chamber, 150'c The coating process was repeated 4 times under the processing conditions of 200 °C in the second chamber, 300 °C to 370 °C in the third chamber, and a speed of 10 m/min to form a coating layer with a coating weight of 23 g / m. did.
得られた耐熱性基布は、表側片面には非粘着性及び平f
肖性に優れた弗素系樹脂組成物の被覆層が充填剤をコー
ティングした目詰め層に積層されて強力に固着されてお
り、亀裂、発泡等は見られなかった。一方、裏面片側は
ガラス・クロス生地がそのまま露出した状態であり、か
つ裏面には表面片側に反復被覆処理した水性ディスパー
ジョンの浸透、浸出、タレ、発泡等の状態は全(見られ
なかった。The obtained heat-resistant base fabric has non-adhesive and flat f on one front side.
The coating layer of the fluorine-based resin composition with excellent properties was laminated on the filling layer coated with the filler and was strongly fixed, and no cracks, foaming, etc. were observed. On the other hand, on one side of the back side, the glass cloth fabric was exposed as it was, and on the back side, there was no penetration, seepage, sagging, foaming, etc. of the aqueous dispersion that had been repeatedly coated on one side of the front side.
かくして、表面片側に非粘着性、低摩擦性を有すると共
に、裏面側では以後粘着又は接着加工を行なうのに通し
た裸布状態の耐熱性片面被覆シートが得られた。In this way, a heat-resistant, single-sided coated sheet was obtained that had non-adhesive properties and low friction properties on one side of the front side, and was in the form of a bare cloth that could be subsequently subjected to adhesive or adhesive processing on the back side.
(発明の効果)
本発明によれば、従来含浸両面被覆処理、或いは垂直方
式での複雑な機構を伴なう両面異種又は片面vlFFt
処理が行なわれていたのを改善し、耐熱性繊維基布の片
面のみに非粘着性、低摩擦性等に優れたPTFE水性デ
ィスパージョン被ri!、層を効率的、かつ強力に層着
せしめることができる。(Effects of the Invention) According to the present invention, conventional impregnating double-sided coating treatment or double-sided heterogeneous or single-sided vlFFt that involves a complicated mechanism in a vertical system
This treatment has been improved, and only one side of the heat-resistant fiber base fabric is coated with a PTFE water-based dispersion that has excellent non-adhesive and low-friction properties! , layers can be applied efficiently and strongly.
また、片面又は両面に予め空隙部を充填した目積め層を
形成せしめるため、該水性ディスパージョンの不都合な
浸透、タレ等を生ずる虞れもなく、簡易な装置ならびに
操作であると共に、同じ装置を反復して繰り返し使用す
ることが可能なため、極めて効率的である。さらに、現
品ロスが少なく、しかも片面では以後の接着又は粘着処
理に必要な加工処理を省略し得るので、工業的有利に低
コストで適宜用途に適した耐熱性片面被覆シートを得る
ことができる。In addition, since a filling layer is formed with voids filled in advance on one or both sides, there is no risk of inconvenient permeation or sagging of the aqueous dispersion, and the equipment and operation are simple, and the same equipment can be used. It is extremely efficient because it can be used repeatedly. Furthermore, there is little loss of actual products, and since processing necessary for subsequent adhesion or adhesive treatment can be omitted on one side, it is possible to obtain a heat-resistant single-sided coated sheet suitable for various uses at an industrially advantageous low cost.
第1図は本発明にかかる耐熱性片面被覆シートの部分拡
大略示図、第2図は別実施例、第3図は本発明方法の一
実施例を示す装置の概略説明図である。
1・・・耐熱性片面被覆シート本体、2・・・耐熱性繊
維基布、3・・・経糸、4・・・緯糸、5・・・充瞑剤
、6・・・空隙部、7・・・目詰め層、8・・・水分散
弗素系樹脂組成物、9・・・被覆層、10・・・巻出し
ロール、11・・・アキニム装置、12・・・皺伸ばし
ロール、13・・・ガイドロール、14・・・送込みロ
ール、15・・・ベッド、16・・・ナイフドクター、
17.18・・・乾燥炉、19・・・焼成炉、20・・
・冷却部、21・・・空冷部、22・・・水冷部、23
・・・巻取りロール、
第1図FIG. 1 is a partial enlarged schematic diagram of a heat-resistant single-sided coated sheet according to the present invention, FIG. 2 is another embodiment, and FIG. 3 is a schematic explanatory diagram of an apparatus showing an embodiment of the method of the present invention. DESCRIPTION OF SYMBOLS 1... Heat-resistant single-sided coating sheet body, 2... Heat-resistant fiber base fabric, 3... Warp, 4... Weft, 5... Filler, 6... Void, 7... . . . Closing layer, 8. Water-dispersed fluororesin composition, 9. Coating layer, 10. Unwinding roll, 11. Ackinim device, 12. Wrinkle smoothing roll, 13. ...Guide roll, 14...Feeding roll, 15...Bed, 16...Knife doctor,
17.18...Drying oven, 19...Calcining oven, 20...
- Cooling section, 21... Air cooling section, 22... Water cooling section, 23
...Take-up roll, Figure 1
Claims (1)
分散弗素系樹脂組成物の浸透を阻止し得る目詰め層が形
成されると共に、該基布の片面に水分散弗素系樹脂組成
物を被覆してなることを特徴とする耐熱性片面被覆シー
ト。 2)耐熱性繊維からなる織編物基布の片面又は両面に水
分散弗素系樹脂組成物の浸透を阻止し得る目詰め層を形
成した後、該基布のいずれかの片面を上面として水平方
向に走行せしめ、前記基布の上面片側に水分散弗素系樹
脂組成物を被覆してなることを特徴とする耐熱性片面被
覆シートの製造法。[Scope of Claims] 1) A packing layer that can prevent the penetration of a water-dispersed fluororesin composition is formed on one or both sides of a woven or knitted base fabric made of heat-resistant fibers, and a packing layer that can prevent the penetration of a water-dispersed fluororesin composition is formed on one side of the base fabric. A heat-resistant single-sided coated sheet characterized by being coated with a water-dispersed fluororesin composition. 2) After forming a packing layer that can prevent the penetration of the water-dispersed fluororesin composition on one or both sides of a woven or knitted base fabric made of heat-resistant fibers, horizontally with one side of the base fabric as the upper surface. 1. A method for producing a heat-resistant single-sided coated sheet, characterized in that one side of the upper surface of the base fabric is coated with a water-dispersed fluorine-based resin composition.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19781786A JPS6353031A (en) | 1986-08-23 | 1986-08-23 | Heat-resistant one-sided coated sheet and manufacture thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19781786A JPS6353031A (en) | 1986-08-23 | 1986-08-23 | Heat-resistant one-sided coated sheet and manufacture thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6353031A true JPS6353031A (en) | 1988-03-07 |
JPH0574459B2 JPH0574459B2 (en) | 1993-10-18 |
Family
ID=16380832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19781786A Granted JPS6353031A (en) | 1986-08-23 | 1986-08-23 | Heat-resistant one-sided coated sheet and manufacture thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6353031A (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5119111U (en) * | 1974-07-31 | 1976-02-12 | ||
JPS51119778A (en) * | 1975-04-15 | 1976-10-20 | Nippon Valqua Ind Ltd | A method for manufacturing a laminated board of polytetrafluoroethylen e |
JPS5298075A (en) * | 1976-02-12 | 1977-08-17 | Chem Fab Corp | Method of coating base with fluorinated organic polymer and their products |
JPS57162840U (en) * | 1981-04-03 | 1982-10-14 | ||
JPS6164436U (en) * | 1984-10-03 | 1986-05-01 | ||
JPS61181639A (en) * | 1985-02-08 | 1986-08-14 | 平岡織染株式会社 | Heat-resistant sheet |
-
1986
- 1986-08-23 JP JP19781786A patent/JPS6353031A/en active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5119111U (en) * | 1974-07-31 | 1976-02-12 | ||
JPS51119778A (en) * | 1975-04-15 | 1976-10-20 | Nippon Valqua Ind Ltd | A method for manufacturing a laminated board of polytetrafluoroethylen e |
JPS5298075A (en) * | 1976-02-12 | 1977-08-17 | Chem Fab Corp | Method of coating base with fluorinated organic polymer and their products |
JPS57162840U (en) * | 1981-04-03 | 1982-10-14 | ||
JPS6164436U (en) * | 1984-10-03 | 1986-05-01 | ||
JPS61181639A (en) * | 1985-02-08 | 1986-08-14 | 平岡織染株式会社 | Heat-resistant sheet |
Also Published As
Publication number | Publication date |
---|---|
JPH0574459B2 (en) | 1993-10-18 |
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