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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
Application number
JP55074386A
Other languages
Japanese (ja)
Other versions
JPS571713A (en
Inventor
Hajime Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daicel Corp
Original Assignee
Daicel Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daicel Chemical Industries Ltd filed Critical Daicel Chemical Industries Ltd
Priority to JP7438680A priority Critical patent/JPS571713A/en
Publication of JPS571713A publication Critical patent/JPS571713A/en
Publication of JPS633729B2 publication Critical patent/JPS633729B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/71General 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

【発明の詳細な説明】[Detailed description of the invention]

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】

【表】【table】 【図面の簡単な説明】[Brief explanation of the drawing]

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)

【特許請求の範囲】[Claims] 1 熱硬化性樹脂塗料からなるプライマーを被覆
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.
JP7438680A 1980-06-04 1980-06-04 Bonding method of nylon Granted JPS571713A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0544419Y2 (en) * 1988-03-29 1993-11-11

Families Citing this family (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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