JPS6144634B2 - - Google Patents
Info
- Publication number
- JPS6144634B2 JPS6144634B2 JP16908881A JP16908881A JPS6144634B2 JP S6144634 B2 JPS6144634 B2 JP S6144634B2 JP 16908881 A JP16908881 A JP 16908881A JP 16908881 A JP16908881 A JP 16908881A JP S6144634 B2 JPS6144634 B2 JP S6144634B2
- Authority
- JP
- Japan
- Prior art keywords
- buff
- resin
- nonwoven fabric
- tensile strength
- polishing
- 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.)
- Expired
Links
- 239000004745 nonwoven fabric Substances 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 238000005498 polishing Methods 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 239000006061 abrasive grain Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 9
- 238000011221 initial treatment Methods 0.000 claims description 7
- 238000011282 treatment Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 description 10
- 239000003082 abrasive agent Substances 0.000 description 7
- 238000009987 spinning Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 235000014593 oils and fats Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229910052580 B4C Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/001—Manufacture of flexible abrasive materials
Description
【発明の詳細な説明】
本願発明は、新規な研磨用バフの製造方法に関
するものである。
従来、バフ仕上は金属、非金属の表面加工法と
して広く用いられている。バフ仕上げは、バフと
バフ研磨剤を用いて行つているものである。
一方、前記バフ仕上と同様の研磨を行う研磨工
具として、砥粒と接着剤を不織布に吹付けた研磨
材が知られているが、なじみ性は良好であるが、
研削力や光沢が劣るものであつた。
また、砥粒を繊維体中に含有した繊維を不織布
状にして、丸く打抜いたものを数枚合せて用い
る。或いは、フラツプ状としたものが知られてい
るが、前者では、研削力は良いが仕上面に合せ目
がでること、後者では、なじみ性は良好であり、
特徴のある仕上面が得られるが研削力や、耐摩耗
性が劣るものであつた。そして、前者では、合せ
目のないようにするには不織布を柔軟にしなけれ
ばならず、そうすると研削力や耐摩耗性が劣るも
のになる。後者では、研削力、耐摩耗性を向上さ
せるために剛性の強いものにすると、なじみ性が
劣るものであつた。
そこで、前者において、合せ目の出ない方法と
してオープンバフの形式にすることが考えられ
る。しかし、研削力や耐摩耗性のよい不織布をバ
フ成型機にかけると、不織布は180゜に折り曲げ
られるため、不織布が折れるか、絞り込みが非常
に困難なものであつた。
本願発明者は、研削性、なじみ性、仕上面、耐
摩耗性のよい研磨工具を得るために種々研究を行
つた結果、不織布を一次処理と二次処理を行うこ
とによつて本願発明を完成したものである。
即ち、本願発明は、砥粒を含有したポリビニル
アルコール（以下PVAと称す）系繊維を一定の
長さに切断し、乾式または湿式で均一に分散し、
同時に樹脂を分散させるかまたはその後樹脂を塗
布・含浸させ引張強度1.0〜4.0Kg/cm2、ヤング率
10〜50Kg/cm2となるように一次処理を施して得た
不織布を、バフ成型機にかけセンター金具を装着
後、引張強度5.0〜60.0Kg/cm2、ヤング率75〜1000
Kg/cm2となるよう二次処理を施すことを特徴とす
る研磨用バフの製造方法である。
本願発明の砥粒を含浸したPVA系繊維は次の
ようにして得ることができる。
紡糸方法は、溶融、乾式、湿式のいずれでもよ
く、PVA紡糸原液に砥粒を混合し、公知の方法
で紡糸する。ノズルの径、形状を替えることによ
つて多様な繊維が得られる。これを、目的に応じ
て延伸、熱処理、化学処理を行う。
PVAとしては、平均重合度1000〜3000の完全
ケン化物が繊維の品質上望ましい。
紡糸原液には油脂類を添加することができる。
これは、光沢を出すことができ、発熱の防止に役
立ものである。
本発明に使用される砥粒は、天然または合成の
研磨、研削、切削、艷出し等の性能を有する粉
状、粒状の固体物質である。例えば、アルミナ、
炭化硅素、コランダム、エメリー、炭化硼素、金
属酸化物、窒化物等の天然または合成の艷出し剤
等である。これらは単独または二種以上に混合し
ても使用される。砥粒の粒度は研磨目的に応じて
用いられる。
本発明の繊維中に含まれる砥粒は５〜95％（重
量）であり好ましくは25〜85％である。５％以下
であると研削力に期待できず、95％以上である繊
維強度が弱くなるのである。
PVA系砥粒含有繊維は、せん断または切断等
によつて、乾式用では10〜100mm、湿式用には、
３〜20mmに切断する。上記の寸法は、分散に最適
の長さである。これを乾式または湿式方法によつ
て、均一に分散せしめて方向性をなくしたものを
一次処理して、所定の密度、厚さの引張強度1.0
〜4.0Kg/cm2、ヤング率10〜50Kg/cm2の不織布状研
磨材を得る。
一次処理は、繊維の分散と同時に行うか、また
は、分散したものに塗布・含浸によつて行うこと
ができる。一次処理に用いる樹脂としては、
PVA、NBR，SBR、メラミン樹脂等が用いられ
二種以上混合することができる。
不織布状研磨材は、1.0Kg/cm2以下であると、取
扱いが難しくなり、4.0Kg/cm2以上であると、バフ
成型機にかけるときに折れるか、絞り込みが困難
となるのである。
次に不織布状研磨材を長尺のテープ状に切断
し、バフ成型機にて、バフ型に成型する。バフ成
型機としては、例えば、中央に凹部のあるドラム
に、テープ状不織布研磨材を巻きつけ、テープ状
不織布研磨材の幅方向の中心線をドラムの中心軸
の方向に均一に絞つてゆき、この際生ずる折目部
分にセンター金具を装着させるものである。
センター金具としては、クリンチリング式また
は二枚金具式が用いられる。
次に、金具の装着された不織布研磨材は二次処
理を行い、不織布部は引張強度5.0〜60.0Kg/cm2、
ヤング率75〜1000Kg/cm2ものにする。5.0Kg/cm2以
下では、研削性や耐摩耗性がないものであり、
60.0Kg/cm2以上であるとなじみ性のないものにな
る。
二次処理に用いる樹脂としては、ウレタン樹
脂、エポキシ樹脂、アクリル樹脂、酢酸ビニル樹
脂等が用いられ、二種以上混合してもよい。そし
て、樹脂は有機溶剤系が望ましい。また、樹脂に
は油脂類を混合、分散することができる。これを
乾燥または硬化後、外周を成型し、製品とするも
のである。
本願発明は、以上のような構成よりなるもので
あるから次のような効果がある。
従来は、引張強度５Kg/cm2以上のPVA系砥粒含
有繊維を用いた不織布は、バフ成型機にて成型で
きないものであつたが、本願発明は、一次処理
後、センター金具を装着し、これに、二次処理を
行うことによつて引張強度５Kg/cm2以上の不織布
状研磨用バフを容易に得ることができるようにな
つたのである。
また、砥粒含有繊維を用いて、更に樹脂処理し
ているので研削力に優れている。そして、オープ
ンバフ形状によつて、なじみ性があり、合せ目も
なく、且つ耐摩耗性のある研磨用バフが得られる
のである。
また、本願発明はセンター金具のついたユニツ
ト型であるから、厚さを積層によつて任意に行う
ことができ、更に、前記本願不織布の密度や硬さ
を変えることによつて多様なバフ加工の用途に適
用できるのである。
次に実施例を挙げて本願発明の方法を説明す
る。
実施例 1.
Ａ#180砥粒率55％、繊維径0.21mm、長さ30〜
45mmのポリビニルアセタール化繊維を乾式分散
し、厚さ５mm、嵩比重0.40ｇ/cm2のシート状と
し、５％NBR系樹脂で処理して乾燥させた（嵩
比重0.46ｇ/cm2）。これを幅190mm、長さ1900mmに
切断したものをバフ成型機にかけ、外径310mm、
厚み15mm、内径125mmのセンター金具のついたバ
フを得た。次に、ポリイソシアネートプレポリマ
ー（NCO11％）の22.5％トルエン・キシレン溶
液を含浸し、絞つたところ嵩比重0.61ｇ/cm2（不
織布部）のものが得られた。この本発明研磨用バ
フを2200rpmにて被削材軟鋼（鉄バフ#150の後
工程）に使用したところ、研削力、仕上面、耐摩
耗性共に良好であつた。なお、二次処理した不織
布と同等のものを打抜き、数枚合せて研磨したと
ころ合せ目を生じた。
前記、一次、二次処理不織布の物性を表―１に
示した。
【表】DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel method for manufacturing a polishing buff. Conventionally, buffing has been widely used as a surface treatment method for metals and non-metals. Buffing is performed using a buff and a buffing agent. On the other hand, an abrasive material in which abrasive grains and adhesive are sprayed onto a nonwoven fabric is known as an abrasive tool that performs polishing similar to the buffing process, but although it has good conformability,
The grinding power and gloss were inferior. Alternatively, several pieces of a non-woven fabric containing abrasive grains and punched into circles are used. Alternatively, flap-shaped ones are known, but the former has good grinding power but leaves seams on the finished surface, while the latter has good conformability.
Although a characteristic finished surface could be obtained, the grinding power and wear resistance were poor. In the former case, the nonwoven fabric must be made flexible in order to avoid seams, which results in poor grinding power and abrasion resistance. In the latter case, when the rigidity was increased in order to improve the grinding force and wear resistance, the conformability was poor. Therefore, in the former case, it is possible to use an open buff format as a method to prevent the seams from appearing. However, when a nonwoven fabric with good grinding power and abrasion resistance is applied to a buffing machine, the nonwoven fabric is bent 180 degrees, so the nonwoven fabric either breaks or is extremely difficult to squeeze. The inventor of the present application conducted various studies in order to obtain an abrasive tool with good grindability, conformability, finished surface, and wear resistance, and as a result, completed the present invention by performing primary treatment and secondary treatment of nonwoven fabric. This is what I did. That is, in the present invention, polyvinyl alcohol (hereinafter referred to as PVA) fibers containing abrasive grains are cut into a certain length, uniformly dispersed in a dry or wet process,
At the same time, resin is dispersed or coated and impregnated with resin to achieve tensile strength of 1.0 to 4.0 Kg/cm 2 and Young's modulus.
The nonwoven fabric obtained by primary treatment to 10-50Kg/cm 2 is put into a buffing machine and after attaching a center metal fitting, it has a tensile strength of 5.0-60.0Kg/cm 2 and a Young's modulus of 75-1000.
This is a method for manufacturing a polishing buff characterized by performing a secondary treatment so that the polishing buff becomes Kg/cm 2 . The abrasive-impregnated PVA fiber of the present invention can be obtained as follows. The spinning method may be melt, dry, or wet, and a PVA spinning stock solution is mixed with abrasive grains, and spinning is performed by a known method. A variety of fibers can be obtained by changing the diameter and shape of the nozzle. This is subjected to stretching, heat treatment, and chemical treatment depending on the purpose. As PVA, a completely saponified product with an average degree of polymerization of 1000 to 3000 is desirable in terms of fiber quality. Oils and fats can be added to the spinning dope.
This can give gloss and is useful for preventing heat generation. The abrasive grains used in the present invention are natural or synthetic powdery or granular solid substances that have properties such as polishing, grinding, cutting, and polishing. For example, alumina,
These include natural or synthetic release agents such as silicon carbide, corundum, emery, boron carbide, metal oxides, and nitrides. These may be used alone or in combination of two or more. The particle size of the abrasive grains is used depending on the purpose of polishing. The abrasive grains contained in the fibers of the present invention range from 5 to 95% (by weight), preferably from 25 to 85%. If it is less than 5%, the grinding force cannot be expected, and if it is more than 95%, the fiber strength becomes weak. PVA-based abrasive-containing fibers can be sheared or cut to a length of 10 to 100 mm for dry use, or 10 to 100 mm for wet use.
Cut into 3-20mm pieces. The above dimensions are the optimum lengths for dispersion. This is uniformly dispersed using a dry or wet method to eliminate directionality, and then subjected to primary treatment to obtain a tensile strength of 1.0 at a predetermined density and thickness.
A non-woven abrasive material having a density of ~4.0 Kg/cm 2 and a Young's modulus of 10 to 50 Kg/cm 2 is obtained. The primary treatment can be carried out simultaneously with the dispersion of the fibers, or by coating or impregnating the dispersed material. The resin used for primary treatment is
PVA, NBR, SBR, melamine resin, etc. are used, and two or more types can be mixed. If the non-woven abrasive material is less than 1.0 Kg/cm 2 , it will be difficult to handle, and if it is more than 4.0 Kg/cm 2 , it will break or become difficult to squeeze when applied to a buffing machine. Next, the non-woven abrasive material is cut into a long tape shape and molded into a buff shape using a buff molding machine. As a buffing machine, for example, a tape-shaped non-woven abrasive material is wound around a drum having a recess in the center, and the widthwise center line of the tape-shaped non-woven abrasive material is uniformly squeezed in the direction of the central axis of the drum. A center metal fitting is attached to the folded portion that occurs at this time. As the center metal fitting, a clinch ring type or a two-piece metal fitting type is used. Next, the nonwoven abrasive material with the metal fittings attached undergoes secondary treatment, and the nonwoven part has a tensile strength of 5.0 to 60.0 Kg/cm 2 .
Young's modulus should be 75-1000Kg/ cm2 . If it is less than 5.0Kg/cm2, it has no grindability or wear resistance.
If it is 60.0Kg/cm 2 or more, it will not be compatible. As the resin used for the secondary treatment, urethane resin, epoxy resin, acrylic resin, vinyl acetate resin, etc. are used, and two or more types may be mixed. The resin is preferably an organic solvent-based resin. Furthermore, oils and fats can be mixed and dispersed in the resin. After drying or curing, the outer periphery is molded to form a product. Since the present invention has the above configuration, it has the following effects. Conventionally, nonwoven fabrics using PVA-based abrasive-containing fibers with a tensile strength of 5 Kg/cm 2 or more could not be molded using a buff molding machine, but in the present invention, after the primary treatment, a center metal fitting is attached, By performing a secondary treatment on this, it has become possible to easily obtain a non-woven polishing buff with a tensile strength of 5 kg/cm 2 or more. Also, since it uses abrasive grain-containing fibers and is further treated with a resin, it has excellent grinding power. The open buff shape makes it possible to obtain a polishing buff that is conformable, has no joints, and is wear resistant. Furthermore, since the present invention is a unit type with a center metal fitting, the thickness can be arbitrarily adjusted by laminating layers, and furthermore, various buffing processes can be performed by changing the density and hardness of the nonwoven fabric of the present invention. It can be applied to various uses. Next, the method of the present invention will be explained with reference to Examples. Example 1. A#180 abrasive grain ratio 55%, fiber diameter 0.21mm, length 30~
45 mm of polyvinyl acetalized fibers were dry dispersed to form a sheet with a thickness of 5 mm and a bulk specific gravity of 0.40 g/cm 2 , which was treated with a 5% NBR resin and dried (bulk specific gravity of 0.46 g/cm 2 ). This was cut into 190mm width and 1900mm length, which was then put through a buffing machine to create an outer diameter of 310mm.
I got a buff with a center metal fitting that was 15mm thick and had an inner diameter of 125mm. Next, it was impregnated with a 22.5% toluene/xylene solution of polyisocyanate prepolymer (NCO 11%) and squeezed to obtain a bulk specific gravity of 0.61 g/cm 2 (nonwoven fabric portion). When this polishing buff of the present invention was used at 2200 rpm on a workpiece of mild steel (post-process of iron buff #150), it had good grinding power, surface finish, and wear resistance. Note that when several pieces of nonwoven fabric equivalent to the secondarily treated nonwoven fabric were punched out and polished together, seams were formed. Table 1 shows the physical properties of the above-mentioned primary and secondary treated nonwoven fabrics. 【table】
Claims (1)
を一定の長さに切断し、乾式または湿式で均一に
分散し、同時に樹脂を分散させるかまたはその後
樹脂を塗布・含浸させ引張強度1.0〜4.0Kg/cm2、
ヤング率10〜50Kg/cm2となるように一次処理を施
して得た不織布を、バフ成型機にかけセンター金
具を装着後、引張強度5.0〜60Kg/cm2、ヤング率
175〜1000Kg/cm2となるように二次処理を施すこと
を特徴とする研磨用バフの製造方法。1. Polyvinyl alcohol fibers containing abrasive grains are cut to a certain length and uniformly dispersed in a dry or wet process, and at the same time, resin is dispersed or coated/impregnated with resin to achieve a tensile strength of 1.0 to 4.0 Kg/cm. 2 ,
The nonwoven fabric obtained by primary treatment to have a Young's modulus of 10 to 50 Kg/cm 2 is put into a buff molding machine, and after attaching a center metal fitting, it has a tensile strength of 5.0 to 60 Kg/cm 2 and a Young's modulus of 5.0 to 60 Kg/cm 2 .
A method for producing a polishing buff, which comprises performing a secondary treatment to obtain a polishing buff of 175 to 1000 Kg/cm 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16908881A JPS5871071A (en) | 1981-10-21 | 1981-10-21 | Manufacture of polishing buff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16908881A JPS5871071A (en) | 1981-10-21 | 1981-10-21 | Manufacture of polishing buff |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5871071A JPS5871071A (en) | 1983-04-27 |
| JPS6144634B2 true JPS6144634B2 (en) | 1986-10-03 |
Family
ID=15880100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16908881A Granted JPS5871071A (en) | 1981-10-21 | 1981-10-21 | Manufacture of polishing buff |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5871071A (en) |
-
1981
- 1981-10-21 JP JP16908881A patent/JPS5871071A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5871071A (en) | 1983-04-27 |
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