JPH02173271A - Continuous impregnation of belt piece consisting of non-woven fabric or needle punch felt with activated solution - Google Patents
Continuous impregnation of belt piece consisting of non-woven fabric or needle punch felt with activated solutionInfo
- Publication number
- JPH02173271A JPH02173271A JP28510389A JP28510389A JPH02173271A JP H02173271 A JPH02173271 A JP H02173271A JP 28510389 A JP28510389 A JP 28510389A JP 28510389 A JP28510389 A JP 28510389A JP H02173271 A JPH02173271 A JP H02173271A
- Authority
- JP
- Japan
- Prior art keywords
- strip
- solution
- nonwoven fabric
- woven fabric
- felt
- 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
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 13
- 238000005470 impregnation Methods 0.000 title claims description 5
- 230000003213 activating effect Effects 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 14
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 6
- 239000011800 void material Substances 0.000 claims abstract description 6
- -1 polyethylene Polymers 0.000 claims abstract description 5
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 5
- 239000004698 Polyethylene Substances 0.000 claims abstract description 3
- 229920000573 polyethylene Polymers 0.000 claims abstract description 3
- 239000004952 Polyamide Substances 0.000 claims abstract 2
- 239000004743 Polypropylene Substances 0.000 claims abstract 2
- 229920002239 polyacrylonitrile Polymers 0.000 claims abstract 2
- 229920002647 polyamide Polymers 0.000 claims abstract 2
- 229920001155 polypropylene Polymers 0.000 claims abstract 2
- 238000001994 activation Methods 0.000 claims description 35
- 230000004913 activation Effects 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 11
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 238000001465 metallisation Methods 0.000 claims description 3
- 229910000510 noble metal Inorganic materials 0.000 claims description 2
- 229920006149 polyester-amide block copolymer Polymers 0.000 claims 1
- 238000007747 plating Methods 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000007772 electroless plating Methods 0.000 abstract 1
- 229920000728 polyester Polymers 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 229910052759 nickel Inorganic materials 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- VONSLYSEUXFYLE-UHFFFAOYSA-N Erychrosid Natural products C1C2(C)OC2(C)C(O)OC1C(C)C1C2(C)C(=O)CC3C4(C)C(=O)C=CCC4(O)C4OC4C3C2CC1 VONSLYSEUXFYLE-UHFFFAOYSA-N 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012799 electrically-conductive coating Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/28—Sensitising or activating
- C23C18/30—Activating or accelerating or sensitising with palladium or other noble metal
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Chemically Coating (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ｌないし１０ｍｍの厚さと５０ないし９７％
の空隙率を持つ非導電性プラスチック繊維の不織布又は
ニードルパンチフェルトから成る帯片に、金属化のため
パラジウム及び亜鉛を主成分とする貴金属含有活性化溶
液を連続含浸する際、帯片を１ないしｌ Ｏｖａ／＋ｓ
ｉ ｎの送り速度で活性化溶液へ供給して、上から活
性化溶液へ浸漬する、不織布又はニードルパンチフェル
トから成る帯片に活性化溶液を連続含浸する方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention has a thickness of 1 to 10 mm and a thickness of 50 to 97%.
During continuous impregnation of a strip of non-woven fabric or needle punched felt of non-conductive plastic fibers with a porosity of l Ova/+s
The present invention relates to a method for continuous impregnation of a strip of non-woven fabric or needle-punch felt with an activation solution, which is fed into the activation solution at a feed rate of in and immersed into the activation solution from above.
不織布又はニードルバンチフェル１〜から成る帯片は通
常プラスチック繊維から製造され、従って非導電性であ
る。多くの物理的又は化学的使用目的のため、現在は高
多孔性担体材料が使用されるが、金員的性質を持ってい
なければならない。従ってこのような帯片をこのような
目的に使用できるためには、帯片に金属的性質を与え°
ねばならない。従ってこれらの帯片に導電性被椋即ち金
属被覆を設けねばならない。これらの帯片用に加工され
るプラスチック繊維は電気絶縁性で、従って直接に化学
的金属析出には適さないので、予め活性化せねばならず
、活性化過程中にまず繊維表面上に触媒的に活性な物質
を析出させねばならない。活性化のため、塩酸中の還元
剤として２価亜鉛イオンを過剰に含むコロイド又はイオ
ン化パラジウム溶液から成る貴金属含有活性化溶液が使
用される。The strips of non-woven fabric or needle bunch fels 1 are usually made from plastic fibers and are therefore electrically non-conductive. For many physical or chemical applications, highly porous carrier materials are currently used, but must have metallic properties. Therefore, in order for such a strip to be used for this purpose, it must be given metallic properties.
Must be. These strips must therefore be provided with an electrically conductive coating or metal coating. Since the plastic fibers processed for these strips are electrically insulating and therefore not suitable for direct chemical metal deposition, they must be activated beforehand, and during the activation process a catalytic agent is first deposited on the fiber surface. active substances must be precipitated. For activation, a noble metal-containing activation solution is used consisting of a colloidal or ionized palladium solution containing an excess of divalent zinc ions as reducing agent in hydrochloric acid.
パラジウム及び亜鉛を主成分とする活性化溶液を不ｗＡ
市又はニードルパンチフェルトの帯片に含浸し、含浸区
域を通してこの帯片を引張ることは、例えばドイツ連邦
共和国特許第３６３１０５５号明細書から既に公知であ
る。しかし活性化溶液中を通して帯片を引張るこのよう
な方法では、帯片を活性化溶液へ浸漬する瞬間に、均一
に帯片の空隙へ急速に浸入するのに充分過剰な新しい活
性化溶液が帯片の両側に存在しないという欠点が生ずる
。この方法では、浴中に比較的少量の活性化溶液しか存
在せず、含浸された帯片により溶液が浴から搬出される
のと同じ程度だけ、新しい活性化溶液が補充されるよう
にしている。Activation solution containing palladium and zinc as main components
It is already known, for example from German Patent No. 3,631,055, to impregnate a strip of city or needle-punch felt and to pull this strip through an impregnated zone. However, such a method of pulling the strip through the activating solution ensures that at the moment the strip is dipped into the activating solution, there is a sufficient excess of new activating solution on the strip to uniformly and rapidly penetrate the voids in the strip. The disadvantage arises that it is not present on both sides of the piece. In this method, only a relatively small amount of activating solution is present in the bath, and as much solution is removed from the bath by the impregnated strip, it is replenished with fresh activating solution. .
従って本発明の基礎になっている課題は、パラジウム及
び亜鉛を主成分とする貴金属含有活性化溶液により、繊
維の完全に均一な被覆を待に不ａ市又はニードルパンチ
フェルトの内部まで確実に行なう、不織布又はニードル
パンチフェルトから成る帯片の活性化方法を提供するこ
とである。The object of the present invention is therefore to ensure a completely uniform coating of the fibers, even into the interior of the raw material or needle-punch felt, with a precious metal-containing activation solution based on palladium and zinc. The object of the present invention is to provide a method for activating a strip made of nonwoven fabric or needle punch felt.
この課題を解決するため本発明によれば、全活性化過程
中に活性化溶液へ帯片を浸漬する瞬間に、帯片の両側へ
、帯片の浸漬範囲において含浸すべき空隙容積の少なく
とも５倍の容積に相当する過剰な新しい活性化溶液を与
える。In order to solve this problem, according to the invention, during the entire activation process, at the moment of immersion of the strip in the activation solution, at least 50% of the void volume to be impregnated in the area of immersion of the strip is applied on both sides of the strip. Give an excess of new activation solution equivalent to double the volume.
前述した従来の技術とは異なり、本発明による方法では
、多量の過剰な活性化溶液で処理が行なわれ、帯片が上
から活性化溶液へ浸漬される。その際帯片は通常垂直に
活性化溶液へ導入される。活性化溶液への帯片の垂直な
導入に対する偏差は最大２０°を越えないようにして、
帯片へ両側から均一に活性化溶液を含浸する。過剰な活
性化浴液が存在することによって、活性化溶液へ帯片を
浸漬する各時点に、帯片の両側から新しい活性化溶液が
水平にこの帯片へ浸入し、帯片の空隙も新しい活性化溶
液で完全に満たされる。実際には、新しい全活性化溶液
を例えば０．３ないし帆５ｍの幅の容器へ与え、供給さ
れる帯片の厚さを１ないし１０■麿とする。本発明によ
る方法では、活性化過程中に帯片の内部に形成される気
泡は、帯片内で均一に上方へ導出され、これが帯片の均
一な活性化に有利な影響を及ばす。In contrast to the prior art described above, in the method according to the invention the treatment is carried out with a large excess of activating solution, and the strip is dipped into the activating solution from above. The strip is usually introduced vertically into the activation solution. The deviation from the vertical introduction of the strip into the activation solution does not exceed a maximum of 20°,
Impregnate the strip evenly from both sides with the activation solution. The presence of excess activation bath liquid causes new activation solution to enter the strip horizontally from both sides of the strip at each point in time when the strip is immersed in the activation solution, and the voids in the strip are also fresh. Fill completely with activation solution. In practice, the fresh total activation solution is applied to a container with a width of, for example, 0.3 to 5 m, and the thickness of the supplied strip is 1 to 10 mm. In the method according to the invention, the air bubbles that are formed inside the strip during the activation process are evenly drawn upwards within the strip, which favorably influences the uniform activation of the strip.
図面に示される実施例により本発明を以下に説明する。 The invention will be explained below by means of embodiments shown in the drawings.
９５％の空隙率、３ｍｍの厚さ、１ＯＩＬ１の長さ及び
５０ｃｍの幅を持ちポリエチレンから成る二ドルパンチ
フェルト帯片２が、供給コイルｌから引出され、垂直に
上下に設けられた２つの案内ローラ３及び４を介して、
垂直に上から活性化溶液７へ浸漬され、パラジウム及び
亜鉛を含む活性化溶液で満たされている含浸容器６を通
って引出される。帯片２が活性化溶液７へ没入する範囲
５には、常に活性化過程にとって充分過剰な新しい活性
化溶液が与えられ、この過剰な活性化溶液の容積は、ニ
ードルパンチフェルト帯片の含浸すべき空隙容積の５倍
以上に相当している。活性化の行なわれた後、次の図示
しない遠心分離装置においてニードルパンチフェルト帯
片が活性化溶液を分離され、続いて溶液１４当り３０ｇ
のＮｉＣ７！２・６Ｈ２０，３５ｇのＮａＨ２ＰＯ４・
Ｈ２Ｏ，５０ｇのＮＨ４Ｃ７！及び２５ｇのＮａＯＨを
含むニッケルめっき溶液で化学的にニッケルめっきされ
る。A double-punch felt strip 2 made of polyethylene with a porosity of 95%, a thickness of 3 mm, a length of 1 OIL and a width of 50 cm is drawn off from a supply coil 1 and placed between two guides arranged vertically one above the other. Via rollers 3 and 4,
It is dipped vertically from above into the activation solution 7 and drawn out through the impregnating vessel 6, which is filled with an activation solution containing palladium and zinc. The region 5 in which the strip 2 is immersed into the activation solution 7 is always provided with a sufficient excess of fresh activation solution for the activation process, and this volume of excess activation solution covers the impregnation of the needle-punch felt strip. This corresponds to more than five times the void volume. After the activation has taken place, the needle-punch felt strips are separated from the activation solution in a subsequent centrifugation device (not shown), followed by 30 g per solution 14.
of NiC7!2・6H20,35g of NaH2PO4・
H2O, 50g of NH4C7! and chemically nickel plated with a nickel plating solution containing 25 g of NaOH.
活性化されたニードルパンチフェルト帯片では、４すべ
でのｍ雄が完全にニッケルめっきされた。In the activated needle-punch felt strip, all four m males were fully nickel plated.
個々のｍ維は、それらを包囲するニッケル外皮上で、続
いて更に電気めっきで補強された。電気めつきにより補
強されたニードルパンチフェルト帯片の顕微鏡検査によ
り、ニッケルめっきのこのような均一性が証明された。The individual m-fibers were subsequently further reinforced by electroplating on a nickel skin surrounding them. Microscopic examination of electroplated reinforced needle punch felt strips demonstrated this uniformity of the nickel plating.
この検査は、帯片の先行する活性化過程が均一に行なわ
れたことも証明した。これまで使用された金属化ニード
ルパンチフェルト帯片の１０！凸方法では、均一に具ツ
ケルめっきされない１０ないし１５％の不良帯片が出た
が、本発明による方法によって製造されるニードルパン
チフェルト帯片では、ニッケルめっきに欠陥のある約２
％の不良製品しか認められなかった。This test also demonstrated that the previous activation process of the strip was carried out uniformly. 10 of the best metallized needle punch felt strips ever used! The convex method resulted in 10 to 15% defective strips that were not evenly plated, whereas the needle punch felt strips produced by the method of the present invention had about 20% defective strips in the nickel plating.
Only % of defective products were found.
従って本発明の利点は、特に帯片の内部でも活性化溶液
による繊維の被覆が著しく均一に行なわれることである
。それにより、活性化されたプラスチック繊維帯片の続
いて行なわれる金属化の際における均一性も得られる。The advantage of the invention is therefore that the coating of the fibers with the activating solution is extremely uniform, especially within the strip. This also results in uniformity during the subsequent metallization of the activated plastic fiber strip.
図は本発明による方法を実厖する装置の概略断面図であ
る。
２・・・帯片、７・・・活性化溶液。
ハフトウングThe figure is a schematic cross-sectional view of an apparatus for implementing the method according to the invention. 2... Strip, 7... Activation solution. Haftung
Claims (1)
率を持つ非導電性プラスチック繊維の不織布又はニード
ルパンチフェルトから成る帯片に、金属化のためパラジ
ウム及び亜鉛を主成分とする貴金属含有活性化溶液を連
続含浸する際、帯片を１ないし１０ｍ／ｍｉｎの送り速
度で活性化溶液へ供給して、上から活性化溶液へ浸漬す
る方法において、全活性化過程中に活性化溶液へ帯片を
浸漬する瞬間に、帯片の両側へ、帯片の浸漬範囲におい
て含浸すべき空隙容積の少なくとも５倍の容積に相当す
る過剰な新しい活性化溶液を与えることを特徴とする、
不識布又はニードルパンチフェルトから成る帯片に活性
化溶液を連続含浸する方法。 ２、活性化すべきプラスチック繊維として、ポリエチレ
ン、ポリプロピレン、ポリアクリルニトリル、ポリエス
テル又はポリアミドの不織布又はニードルパンチフェル
トから成る帯片を使用することを特徴とする、請求項１
に記載の方法。[Claims] 1. A strip of non-woven fabric or needle punched felt of non-conductive plastic fibers with a thickness of 1 to 10 mm and a porosity of 50 to 97%, containing palladium and zinc as the main components for metallization. During continuous impregnation with a noble metal-containing activation solution, the strip is fed into the activation solution at a feed rate of 1 to 10 m/min and immersed in the activation solution from above, during the entire activation process. characterized in that at the moment of immersion of the strip in the activating solution, an excess of fresh activating solution is applied to both sides of the strip, corresponding to a volume at least 5 times the void volume to be impregnated in the area of immersion of the strip. do,
A method of continuously impregnating a strip of non-woven fabric or needle punch felt with an activating solution. 2. Claim 1, characterized in that the plastic fibers to be activated are strips of non-woven fabric or needle punched felt of polyethylene, polypropylene, polyacrylonitrile, polyester or polyamide.
The method described in.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883837835 DE3837835C1 (en) | 1988-11-08 | 1988-11-08 | |
| DE3837835.3 | 1988-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02173271A true JPH02173271A (en) | 1990-07-04 |
Family
ID=6366707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28510389A Pending JPH02173271A (en) | 1988-11-08 | 1989-11-02 | Continuous impregnation of belt piece consisting of non-woven fabric or needle punch felt with activated solution |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH02173271A (en) |
| DE (1) | DE3837835C1 (en) |
| FR (1) | FR2638768B1 (en) |
| GB (1) | GB2225028B (en) |
| SE (1) | SE503747C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04124280A (en) * | 1990-09-17 | 1992-04-24 | Hitachi Chem Co Ltd | Instrument for measuring deposition speed of electroless plating |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3925232C1 (en) * | 1989-07-29 | 1990-04-19 | Deutsche Automobilgesellsch | Chemically metallising electrically non-conducting porous substrates - esp. needle felts, etc., by activating substrate surface and adding metallising soln. |
| DE4033518C1 (en) * | 1990-10-22 | 1991-07-25 | Deutsche Automobilgesellschaft Mbh, 3300 Braunschweig, De | |
| DE4106696C1 (en) * | 1991-03-02 | 1991-09-19 | Deutsche Automobilgesellschaft Mbh, 3300 Braunschweig, De | Continuous prodn. of chemically metallised felt or foamed web - involves feeding web to catalytically activated soln. contg. lead and tin, drying, impregnating with metallising soln. etc. |
| DE4242443C1 (en) * | 1992-12-16 | 1993-06-03 | Deutsche Automobilgesellschaft Mbh, 3300 Braunschweig, De | Wet chemical metallising process for pre-activated plastic substrates - involves collecting used metallising soln., activating soln. and aq. washings for processing and recycling in the process |
| DE4444458C1 (en) * | 1994-12-14 | 1995-08-03 | Deutsche Automobilgesellsch | Metallic artificial substrate made of fleece, needle felt or foam |
| DE19711857C2 (en) * | 1997-03-21 | 2003-07-31 | Hoppecke Batterie Systeme Gmbh | Electrode frame made of needle felt material |
| RU2479681C2 (en) * | 2011-04-01 | 2013-04-20 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный университет технологии и дизайна" | Method of metallization flat materials |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3267017A (en) * | 1962-01-31 | 1966-08-16 | Ibm | Apparatus for producing magnetic recording materials |
| US3562005A (en) * | 1968-04-09 | 1971-02-09 | Western Electric Co | Method of generating precious metal-reducing patterns |
| GB1360824A (en) * | 1971-06-30 | 1974-07-24 | Cottbus Textilkombinat | Metallisation process for inorganic and organic polymers |
| DE3631055C1 (en) * | 1986-09-12 | 1987-05-21 | Deutsche Automobilgesellsch | Process for the continuous draining of nonwoven or needle felt webs with an activation solution |
-
1988
- 1988-11-08 DE DE19883837835 patent/DE3837835C1/de not_active Expired - Lifetime
-
1989
- 1989-10-25 SE SE8903550A patent/SE503747C2/en not_active IP Right Cessation
- 1989-11-01 GB GB8924595A patent/GB2225028B/en not_active Expired - Fee Related
- 1989-11-02 JP JP28510389A patent/JPH02173271A/en active Pending
- 1989-11-06 FR FR8914490A patent/FR2638768B1/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04124280A (en) * | 1990-09-17 | 1992-04-24 | Hitachi Chem Co Ltd | Instrument for measuring deposition speed of electroless plating |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2638768B1 (en) | 1993-11-12 |
| GB8924595D0 (en) | 1989-12-20 |
| SE8903550L (en) | 1990-05-09 |
| DE3837835C1 (en) | 1990-02-22 |
| SE8903550D0 (en) | 1989-10-25 |
| SE503747C2 (en) | 1996-08-19 |
| GB2225028A (en) | 1990-05-23 |
| FR2638768A1 (en) | 1990-05-11 |
| GB2225028B (en) | 1993-01-13 |
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