JPS633729B2 - - Google Patents
Info
- Publication number
- JPS633729B2 JPS633729B2 JP55074386A JP7438680A JPS633729B2 JP S633729 B2 JPS633729 B2 JP S633729B2 JP 55074386 A JP55074386 A JP 55074386A JP 7438680 A JP7438680 A JP 7438680A JP S633729 B2 JPS633729 B2 JP S633729B2
- Authority
- JP
- Japan
- Prior art keywords
- nylon
- metal
- mold
- bonding
- molding
- 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
- 229920000299 Nylon 12 Polymers 0.000 claims description 21
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 claims description 20
- 229920000571 Nylon 11 Polymers 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GUOSQNAUYHMCRU-UHFFFAOYSA-N 11-Aminoundecanoic acid Chemical compound NCCCCCCCCCCC(O)=O GUOSQNAUYHMCRU-UHFFFAOYSA-N 0.000 description 1
- PBLZLIFKVPJDCO-UHFFFAOYSA-N 12-aminododecanoic acid Chemical compound NCCCCCCCCCCCC(O)=O PBLZLIFKVPJDCO-UHFFFAOYSA-N 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
本発明はナイロンの接着方法に関し、更に詳し
くはナイロン11又はナイロン12の成形品と金属を
接着する方法に関する。
ナイロン11又はナイロン12は一般に金属との接
着の悪いことが知られている。即ちナイロン11又
はナイロン12は溶剤に侵され難く、m−クレゾー
ル、フエノール等その毒性のために実用困難な薬
品に溶解するのみであるため、溶解することによ
る接着が事実上できず、またナイロン11又はナイ
ロン12と良好に接着する接着剤は未だ見出されて
いない。
一方ナイロン11又はナイロン12は溶融すること
により焼付形熱硬化性塗料でプライマー処理され
た金属と良好に接着するためホツトメルト接着剤
として用いられる。この場合ナイロン11又はナイ
ロン12は、数十〜数百ミクロンのフイルム又は粉
の形態で用いられ、体積に比べ表面積が大きいた
め、ナイロン11又はナイロン12に吸収されている
水分は、樹脂の溶融以前に蒸発し、従つてナイロ
ン11又はナイロン12は発泡することなく良好に接
着できる。しかしながら、この溶融接着方法を一
般の成形品に適用しようとすると、前以て余程完
全な乾燥を行わない限りナイロン11又はナイロン
12は溶融と同時に発泡し良好な接着は得られな
い。更に完全な乾燥を行つても成形品の一部が溶
融することによる成形品の変形は避けられない。
以上のように成形されたナイロン11又はナイロ
ン12と金属の接着は極めて困難である。
本発明の目的は、上記の如き欠点がなく、ナイ
ロン11又はナイロン12の成形品と金属を容易に接
着する新規な方法を提供するにある。
この目的は、金属上にプライマーを被覆し、こ
れを加熱して金属を好ましくは温度100℃以上に
保持した状態で射出成形用金型に固定し、ナイロ
ン11又はナイロン12を射出成形して成形されたナ
イロン11又はナイロン12を金属に接着することに
よつて達成される。
本発明によれば、成形品を成形後溶融する必要
がないため、その発泡、変形がないだけでなく、
一工程で同時に成形と接着が可能であるという利
点がある。
本発明に言うプライマーとは熱硬化性樹脂塗料
であつて、例えばナイロン11又はナイロン12によ
るホツトメルト接着に先立つて金属に施されるエ
ポキシ、フエノール、メラミン、アルキツド系等
の焼付形熱硬化性塗料或いはナイロン11又はナイ
ロン12を用いた粉体塗装に用いられるエポキシ
系、フエノール系、ポリブタジエン系等の熱硬化
性樹脂よりなる塗料である。
これらのプライマーを用いなくても、金属を
100℃以上に加熱すれば、成形直後にはナイロン
11又はナイロン12と金属の良好な接着が得られる
が、経時的接着力の低下がみられるので好ましく
ない。
金属は予じめ燐酸処理、クロム酸処理等の化成
処理をほどこすことができ、これにより更に長期
間良好な密着性を保持せしめ得る。
金型に固定された金属が100℃以下であると、
良好な接着が得られ難いため100℃以上に加熱す
ることが望ましく、ナイロン11又はナイロン12の
融点以上の温度に加熱することが更に好ましい。
プライマーは硬化等のため加熱した後一度冷却
し、更に加熱してもかまわないが、加熱後すぐそ
の熱を利用して連続して金型内に移した方が熱の
損失を防ぐ点で有利である。
本発明に言うナイロン11又はナイロン12とはポ
リ11−アミノウンデカン酸又はポリ12−アミノド
デカン酸即ちポリラウリルラクタム、或いはこれ
らのモノマーを主たる成分とする共重合ポリアミ
ドを意味する。また、これらのナイロン11又はナ
イロン12は必要に応じ可塑剤、安定剤等の添加剤
を含んでいてもよいことは勿論である。
以下本発明を実施例及び比較例について説明す
る。
実施例及び比較例
第1図及び第2図に示す形の3mm厚の軟鋼板1
に表1の焼付形熱硬化性塗料を塗布し、熱風循環
加熱炉により表1の条件で加熱硬化した。加熱後
第1図及び第2図のような平板状成形物を得るた
めの固定型A及び移動型Bよりなる金型内に軟鋼
板1を固定し、サーミスタ表面温度計で鋼板表面
温度を測定し、所定の温度となつた時金型A,B
を閉じキヤビテイー2,2′内に射出成形を行つ
た。尚図中3は突出ピン、4はゲート、5はパー
テイングラインである。成形後5日経過して、樹
脂を削り、ナイフで樹脂と金属の接着状況を調べ
た。
これらの結果を表1に示す。
The present invention relates to a method for bonding nylon, and more particularly to a method for bonding a molded product of nylon 11 or nylon 12 to metal. Nylon 11 or nylon 12 is generally known to have poor adhesion to metals. In other words, nylon 11 or nylon 12 is difficult to be attacked by solvents, and only dissolves in chemicals such as m-cresol and phenol that are difficult to put into practical use due to their toxicity. Also, an adhesive that adheres well to nylon 12 has not yet been found. On the other hand, nylon 11 or nylon 12 is used as a hot melt adhesive because it adheres well to metal primed with a baking type thermosetting paint when melted. In this case, nylon 11 or nylon 12 is used in the form of a film or powder of several tens to hundreds of microns, and since the surface area is large compared to the volume, the moisture absorbed by nylon 11 or nylon 12 is absorbed before the resin melts. Therefore, nylon 11 or nylon 12 can be bonded well without foaming. However, when trying to apply this melt bonding method to general molded products, it is difficult to use nylon 11 or nylon unless thoroughly dried in advance.
No. 12 foams at the same time as it melts, making it impossible to obtain good adhesion. Furthermore, even if complete drying is performed, deformation of the molded product due to melting of a portion of the molded product cannot be avoided. It is extremely difficult to bond nylon 11 or nylon 12 formed as described above to metal. An object of the present invention is to provide a new method for easily bonding molded products of nylon 11 or nylon 12 to metal without the above-mentioned drawbacks. The purpose of this is to coat the metal with a primer, heat it, hold the metal preferably at a temperature of 100°C or higher, fix it in an injection mold, and then injection mold nylon 11 or nylon 12. This is achieved by bonding the coated nylon 11 or nylon 12 to metal. According to the present invention, there is no need to melt the molded product after molding, so not only is there no foaming or deformation, but there is also no need to melt the molded product after molding.
It has the advantage that molding and adhesion can be performed simultaneously in one process. The primer referred to in the present invention is a thermosetting resin coating, such as a baking-type thermosetting coating such as epoxy, phenol, melamine, or alkyd, which is applied to metal prior to hot melt adhesion with nylon 11 or nylon 12. It is a paint made of thermosetting resin such as epoxy, phenol, or polybutadiene that is used for powder coating using nylon 11 or nylon 12. metal without using these primers.
If heated to over 100℃, nylon will form immediately after molding.
Although good adhesion between nylon 11 or nylon 12 and metal can be obtained, it is not preferable because the adhesive strength decreases over time. The metal can be previously subjected to a chemical conversion treatment such as phosphoric acid treatment or chromic acid treatment, thereby making it possible to maintain good adhesion for a longer period of time. If the metal fixed in the mold is below 100℃,
Since it is difficult to obtain good adhesion, it is desirable to heat the material to a temperature of 100° C. or higher, and more preferably to a temperature higher than the melting point of nylon 11 or nylon 12. The primer may be heated for curing, etc., then cooled once and then heated again, but it is advantageous to use the heat immediately after heating and transfer it continuously into the mold in order to prevent heat loss. It is. In the present invention, nylon 11 or nylon 12 means poly-11-aminoundecanoic acid or poly-12-aminododecanoic acid, ie, polylauryllactam, or a copolyamide containing these monomers as the main component. Furthermore, it goes without saying that these nylon 11 or nylon 12 may contain additives such as plasticizers and stabilizers as necessary. The present invention will be described below with reference to Examples and Comparative Examples. Examples and Comparative Examples 3 mm thick mild steel plate 1 in the shape shown in Figures 1 and 2
The baking-type thermosetting paint shown in Table 1 was applied to the surface of the paint and cured by heating under the conditions shown in Table 1 in a hot air circulation heating furnace. After heating, the mild steel plate 1 is fixed in a mold consisting of a fixed mold A and a movable mold B to obtain a flat plate-shaped molded product as shown in Figs. 1 and 2, and the surface temperature of the steel plate is measured with a thermistor surface thermometer. When the temperature reaches the specified temperature, molds A and B
was closed and injection molding was performed inside the cavities 2 and 2'. In the figure, 3 is a protruding pin, 4 is a gate, and 5 is a parting line. Five days after molding, the resin was scraped and the adhesion between the resin and metal was examined using a knife. These results are shown in Table 1.
【表】【table】
第1図は金型の縦断面図、第2図は移動型に固
定した金属の正面図である。
1…金属、2…キヤビテイー。
FIG. 1 is a longitudinal sectional view of the mold, and FIG. 2 is a front view of the metal fixed to the movable mold. 1...Metal, 2...Cavity.
Claims (1)
した金属を100℃以上に加熱した状態で射出成形
用金型に固定し、ナイロン11又はナイロン12を射
出成形して成形されたナイロン11又はナイロン12
と金属を接着することを特徴とするナイロンの接
着方法。1 Nylon 11 or nylon 12 formed by injection molding nylon 11 or nylon 12 by fixing a metal coated with a primer made of thermosetting resin paint in an injection mold while heating it to 100°C or higher.
A nylon bonding method characterized by bonding metal to metal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7438680A JPS571713A (en) | 1980-06-04 | 1980-06-04 | Bonding method of nylon |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7438680A JPS571713A (en) | 1980-06-04 | 1980-06-04 | Bonding method of nylon |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS571713A JPS571713A (en) | 1982-01-06 |
JPS633729B2 true JPS633729B2 (en) | 1988-01-26 |
Family
ID=13545676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7438680A Granted JPS571713A (en) | 1980-06-04 | 1980-06-04 | Bonding method of nylon |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS571713A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0544419Y2 (en) * | 1988-03-29 | 1993-11-11 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62121027A (en) * | 1985-11-21 | 1987-06-02 | Daiseru Hiyurusu Kk | Composite parts |
JPS62121026A (en) * | 1985-11-21 | 1987-06-02 | Daiseru Hiyurusu Kk | Composite parts |
JPH04320814A (en) * | 1991-04-19 | 1992-11-11 | Kyowa Kogyo Kk | Conductive article and manufacture thereof |
JP2011051189A (en) * | 2009-09-01 | 2011-03-17 | Ju Teng Internatl Holdings Ltd | Insert molding method for casing |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5399264A (en) * | 1977-02-14 | 1978-08-30 | Matsushita Electric Ind Co Ltd | Transfer device |
JPS5555842A (en) * | 1978-10-20 | 1980-04-24 | Shiseido Co Ltd | Metallic plate insert molding and products obtained therethrough |
-
1980
- 1980-06-04 JP JP7438680A patent/JPS571713A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5399264A (en) * | 1977-02-14 | 1978-08-30 | Matsushita Electric Ind Co Ltd | Transfer device |
JPS5555842A (en) * | 1978-10-20 | 1980-04-24 | Shiseido Co Ltd | Metallic plate insert molding and products obtained therethrough |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0544419Y2 (en) * | 1988-03-29 | 1993-11-11 |
Also Published As
Publication number | Publication date |
---|---|
JPS571713A (en) | 1982-01-06 |
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