JPH0120968B2 - - Google Patents

Info

Publication number
JPH0120968B2
JPH0120968B2 JP59167234A JP16723484A JPH0120968B2 JP H0120968 B2 JPH0120968 B2 JP H0120968B2 JP 59167234 A JP59167234 A JP 59167234A JP 16723484 A JP16723484 A JP 16723484A JP H0120968 B2 JPH0120968 B2 JP H0120968B2
Authority
JP
Japan
Prior art keywords
pvc
parts
irregularly shaped
mold
vinyl chloride
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
JP59167234A
Other languages
Japanese (ja)
Other versions
JPS6144612A (en
Inventor
Yoshio Yamazaki
Masahiro Takimoto
Fujio Sakamoto
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.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei Co 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 Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Priority to JP59167234A priority Critical patent/JPS6144612A/en
Publication of JPS6144612A publication Critical patent/JPS6144612A/en
Publication of JPH0120968B2 publication Critical patent/JPH0120968B2/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
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14311Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
    • 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
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336Coating a portion of the article, e.g. the edge of the article

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • 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]

<産業上の利用分野> この発明は、自動車用サイドモール・グラスラ
ン等の一般部と異形部を有する塩化ビニル樹脂
(以下「PVC」)製品の製造方法に関する。 尚この明細書で、一般部とは同一断面を有し押
出等により成形可能な部分をいい、異形部とはモ
ールにおける端末部や、グラスランにおけるコー
ナ部のように断面形状や断面方向が変り、金型成
形の必要がある部分をいう。 <従来の技術> ここでは、上記タイプのPVC製品として、第
2図に示すように一般部1と異形部(端末部)2
を有するサイドモールを例に採り説明する。 このサイドモールの製造は、第1図に示すよう
に、押出等により成形した一般部1を、その接合
端面1aに接着剤を塗布して金型3にセツト後、
金型3に形成された異形部成形用キヤビテイ4に
PVC材料(PVC配合物)を射出ノズル5から注
入して(トランスフアでも可)端末部2を成形と
同時に一体化する方法で行なうことが多い(特公
昭56−47852号公報等参照)。端面1aは図例では
垂直であるが、接着面増大の見地から斜面とする
こともある。但し材料の無駄がでる。 このとき、接着剤としては、従来、PVC用と
して市販されているアクリル・フエノール系、ポ
リウレタン系の接着剤を用いていた。 <発明が解決しようとする問題点> しかし、これらの接着剤では、昨今の自動車の
酷暑地における普及に伴なう耐熱接着強さ(特に
引張り)増大の要求を満足させることは困難であ
つた。 <問題点を解決するための手段> 本発明者らは、上記問題点を解決するために、
鋭意研究検討した結果、一般部の接合端面に塗布
する接着剤として、PVC0.5〜20重量部をPVCの
良溶剤100重量部に溶かしたものを使用すればよ
いことを見い出した。 ここで、PVCの配合量が上記範囲をはずれる
と、いずれも所要の接着強さが得られない。 上記良溶剤としては、メチルエチルケトン、ア
セトン、シクロヘキサノン等のケトン類、テトロ
ヒドロフラン(THF)等の環状エーテル類、ジ
メチルホルムアミド、ジメチルアセトアミド、ニ
トロベンゼン等の含窒素化合物類を例示できる。 また、上記PVCとしては、ホモポリマーばか
りでなく塩化ビニルと酢酸ビニル、エチレン等の
コポリマーも使用でき、それらは懸濁・乳化重合
等の方法により製造する。尚、PVCの形態は通
常粉末とする。 <作用> PVCのような結晶性の高いポリマーの場合は、
同質のプラスチツクからなる接着剤を使用しても
必ずしも接着するとは限らず、たとえば、PVC
パイプの場合、PVC粉末THFを溶かしたものを
接着剤として使用しても、全く接着しない(「接
着ハンドブツク第2版」日刊工業新聞社刊、昭和
55年11月10日発行、第93頁参照)。 ところが、この発明では、一般部の接合端面に
塗布する接着剤としては、特定量のPVCを良溶
剤に溶かしたものを塗布することにより、高い接
着強さを一般部と異形部との間に得られる。 その理由は、明瞭ではないが、一般部の接合端
面に形成されたPVC塗膜に、異形部の材料注入
の際、材料中の可塑剤が移行して、PVC塗膜が
可塑化され、結晶性が低下して、高い接着強さが
得られるものと推定される。 <実施例> 下記PVC配合物を用いて、正方形断面(一
辺1cm)に押出成形(押出温度170℃)して一般
部1を得た。 PVC配合物 (部:重量部) ニポリツトCMチツソ(株)製造PVCホモポリマ
ー:=2900) 100部 DOP 80部 重質炭酸カルシウム 30部 有機錫系安定剤 2部 上記で得た一般部1の接合端面1aに第1表に
示す各接着剤を刷毛塗りして1〜3時間放置(溶
剤揮散)した。続いて一般部1を第1図に示すよ
うに金型3にセツト後、金型3に形成されたキヤ
ビテイ4に下記PVC配合物を注入して異形部
2を成形し同時に一体化する。 PVC配合物 (部:重量部) ゼオン103EP8J(日本ゼオン(株)製造塩化ビニ
ル・酢酸ビニルコポリマー)) 100部 DOP 100部 重質炭酸カルシウム 20部 金属石ケン 3部 エポキシ化大豆油 3部 上記のようにして、一般部1と異形部2が接合
されたPVC製品を 常態は23℃・65%RH雰囲気×24時間放置、 耐熱試験後は23℃・65%RH雰囲気×24時間→
80℃雰囲気×240時間→23℃・65%雰囲気×1時
間放置 したものについて、インストロン型万能試験機
を用いて、第2図に示す白矢印の方向に引つ張
り、引つ張り接着強さを測定した。測定結果を第
1表に示す。 <発明の効果> この発明の方法で得たPVC製品は、第1表の
試験結果から明らかな如く、常態は勿論、耐熱試
験後においても、従来の市販のPVC用接着剤を
用いた場合に比して格段に高い接着強さ(特に引
張り)を一般部と異形部との間に有する。従つ
て、この発明の方法で得たサイドモール、グラス
ラン等のPVC製品は酷暑地での使用も可能とな
るものである。
<Industrial Application Field> The present invention relates to a method for manufacturing a vinyl chloride resin (hereinafter referred to as "PVC") product having a general part and an irregularly shaped part, such as side moldings and glass runs for automobiles. In this specification, the general section refers to a section that has the same cross section and can be formed by extrusion, etc., and the irregularly shaped section refers to a section that has a different cross-sectional shape or cross-sectional direction, such as the end section of a molding or the corner section of a glass run. This refers to the part that requires molding. <Prior art> Here, as the above-mentioned type of PVC product, as shown in Fig. 2, a general part 1 and an irregularly shaped part (terminal part) 2 are used.
This will be explained by taking a side molding having a side molding as an example. As shown in FIG. 1, this side molding is manufactured by applying adhesive to the joint end surface 1a of a general part 1 formed by extrusion or the like, and setting it in a mold 3.
In the cavity 4 for molding the irregularly shaped part formed in the mold 3
This is often done by injecting a PVC material (PVC compound) through an injection nozzle 5 (transfer is also acceptable) and integrating the end portion 2 at the same time as molding (see Japanese Patent Publication No. 56-47852, etc.). Although the end surface 1a is vertical in the illustrated example, it may be sloped from the viewpoint of increasing the adhesive surface. However, there is a waste of material. At this time, as the adhesive, acrylic/phenol adhesives and polyurethane adhesives, which are commercially available for PVC, have been used. <Problems to be solved by the invention> However, with these adhesives, it has been difficult to satisfy the demand for increased heat-resistant adhesive strength (particularly tensile strength) that has come with the recent proliferation of automobiles in extremely hot regions. . <Means for solving the problems> In order to solve the above problems, the present inventors
As a result of extensive research and consideration, we discovered that the adhesive to be applied to the joint end surfaces of the general parts should be a mixture of 0.5 to 20 parts by weight of PVC dissolved in 100 parts by weight of a good solvent for PVC. Here, if the blending amount of PVC is out of the above range, the required adhesive strength cannot be obtained in either case. Examples of the good solvent include ketones such as methyl ethyl ketone, acetone, and cyclohexanone, cyclic ethers such as tetrahydrofuran (THF), and nitrogen-containing compounds such as dimethylformamide, dimethylacetamide, and nitrobenzene. Furthermore, as the above-mentioned PVC, not only homopolymers but also copolymers of vinyl chloride, vinyl acetate, ethylene, etc. can be used, and these are produced by methods such as suspension and emulsion polymerization. Note that PVC is usually in the form of powder. <Function> In the case of highly crystalline polymers such as PVC,
The use of adhesives made of homogeneous plastics does not necessarily result in adhesion; for example, PVC
In the case of pipes, even if you use PVC powder THF as an adhesive, it will not adhere at all ("Adhesive Handbook 2nd Edition", published by Nikkan Kogyo Shimbun, Showa)
(Refer to page 93, published November 10, 1955). However, in this invention, by applying a specific amount of PVC dissolved in a good solvent as the adhesive applied to the joint end surface of the general part, high adhesive strength can be achieved between the general part and the irregularly shaped part. can get. The reason for this is not clear, but when the material is injected into the irregularly shaped part, the plasticizer in the material migrates to the PVC coating formed on the joint end surface of the general part, causing the PVC coating to become plasticized and crystallize. It is presumed that the adhesive strength decreases and high adhesive strength is obtained. <Example> General part 1 was obtained by extrusion molding (extrusion temperature: 170°C) into a square cross section (1 cm on each side) using the following PVC blend. PVC compound (parts: parts by weight) PVC homopolymer manufactured by Nipolitsu CM Chitsuso Co., Ltd.: = 2900) 100 parts DOP 80 parts heavy calcium carbonate 30 parts organotin stabilizer 2 parts Joining of general part 1 obtained above Each adhesive shown in Table 1 was applied to the end surface 1a with a brush and left for 1 to 3 hours (solvent evaporation). Subsequently, the general part 1 is set in a mold 3 as shown in FIG. 1, and then the following PVC compound is injected into the cavity 4 formed in the mold 3 to form the irregularly shaped part 2 and integrated at the same time. PVC compound (parts: parts by weight) Zeon 103EP8J (vinyl chloride/vinyl acetate copolymer manufactured by Nippon Zeon Co., Ltd.)) 100 parts DOP 100 parts heavy calcium carbonate 20 parts metal soap 3 parts epoxidized soybean oil 3 parts Above In this way, the PVC product in which the general part 1 and the irregularly shaped part 2 are joined is left for 24 hours at 23℃ and 65%RH atmosphere, and after the heat resistance test, it is left at 23℃ and 65%RH atmosphere for 24 hours→
80°C atmosphere for 240 hours → 23°C, 65% atmosphere for 1 hour. Using an Instron universal testing machine, the tensile adhesive strength was measured by pulling in the direction of the white arrow shown in Figure 2. We measured the The measurement results are shown in Table 1. <Effects of the Invention> As is clear from the test results in Table 1, the PVC products obtained by the method of the present invention exhibit superior performance when using conventional commercially available PVC adhesives, not only under normal conditions but also after heat resistance tests. It has much higher adhesive strength (especially tensile strength) between the general part and the irregularly shaped part. Therefore, PVC products such as side moldings and grass runs obtained by the method of the present invention can be used even in extremely hot regions.

【表】【table】

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

第1図はこの発明及び従来の方法において金型
に一般部をセツトした状態の断面図、第2図はこ
の発明及び従来の方法で得られるPVC製品の部
分断面図である。 1……一般部、1a……一般部の接合端面、2
……異形部、3……金型、4……異形部成形用キ
ヤビテイ、5……射出ノズル。
FIG. 1 is a cross-sectional view of a general part set in a mold according to the present invention and the conventional method, and FIG. 2 is a partial cross-sectional view of a PVC product obtained by the present invention and the conventional method. 1... General part, 1a... Joint end surface of general part, 2
... Irregularly shaped part, 3... Mold, 4... Cavity for molding the irregularly shaped part, 5... Injection nozzle.

Claims (1)

【特許請求の範囲】 1 一般部と異形部を有する塩化ビニル樹脂製品
を製造するに際し、押出等により成形した一般部
を、その接合端面に接着剤を塗布して金型にセツ
ト後、該金型に形成された異形部成形用キヤビテ
イに塩化ビニル樹脂材料を注入して前記異形部を
成形し同時に一体化する方法において、 前記接着剤として塩化ビニル樹脂0.5〜20重量
部を該塩化ビニル樹脂の良溶剤100重量部に溶か
したものを使用することを特徴とする塩化ビニル
樹脂製品の製造方法。
[Scope of Claims] 1. When manufacturing a vinyl chloride resin product having a general part and an irregularly shaped part, the general part is molded by extrusion or the like, and after applying an adhesive to the joint end surface and setting it in a mold, the mold is In the method of injecting a vinyl chloride resin material into a cavity for molding an irregularly shaped part formed in a mold to mold and simultaneously integrate the irregularly shaped part, 0.5 to 20 parts by weight of a vinyl chloride resin is added as the adhesive to the vinyl chloride resin. A method for producing a vinyl chloride resin product, characterized by using a product dissolved in 100 parts by weight of a good solvent.
JP59167234A 1984-08-09 1984-08-09 Manufacture of vinylchloride resin product Granted JPS6144612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59167234A JPS6144612A (en) 1984-08-09 1984-08-09 Manufacture of vinylchloride resin product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59167234A JPS6144612A (en) 1984-08-09 1984-08-09 Manufacture of vinylchloride resin product

Publications (2)

Publication Number Publication Date
JPS6144612A JPS6144612A (en) 1986-03-04
JPH0120968B2 true JPH0120968B2 (en) 1989-04-19

Family

ID=15845936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59167234A Granted JPS6144612A (en) 1984-08-09 1984-08-09 Manufacture of vinylchloride resin product

Country Status (1)

Country Link
JP (1) JPS6144612A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04129233U (en) * 1991-05-16 1992-11-25 積水化学工業株式会社 Mounting structure of eaves gutter
JPH04129232U (en) * 1991-05-16 1992-11-25 積水化学工業株式会社 Mounting structure of eaves gutter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5749385A (en) * 1980-07-10 1982-03-23 Siemens Ag Circuit device for forming voltage signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5749385A (en) * 1980-07-10 1982-03-23 Siemens Ag Circuit device for forming voltage signal

Also Published As

Publication number Publication date
JPS6144612A (en) 1986-03-04

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