JPS6354225A - Manufacture of multilayer composite molded item - Google Patents
Manufacture of multilayer composite molded itemInfo
- Publication number
- JPS6354225A JPS6354225A JP19804786A JP19804786A JPS6354225A JP S6354225 A JPS6354225 A JP S6354225A JP 19804786 A JP19804786 A JP 19804786A JP 19804786 A JP19804786 A JP 19804786A JP S6354225 A JPS6354225 A JP S6354225A
- Authority
- JP
- Japan
- Prior art keywords
- thermotropic
- injection
- polymers
- polymer
- molded item
- 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.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 229920000642 polymer Polymers 0.000 claims abstract description 36
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 238000001746 injection moulding Methods 0.000 claims abstract description 16
- 229920000728 polyester Polymers 0.000 abstract description 18
- 238000000465 moulding Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 abstract 1
- 239000002356 single layer Substances 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 8
- 229920001169 thermoplastic Polymers 0.000 description 8
- -1 4'-dicarboxylic acid Chemical class 0.000 description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 239000003365 glass fiber Substances 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N 1,4-Benzenediol Natural products OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 1
- PXGZQGDTEZPERC-UHFFFAOYSA-N 1,4-cyclohexanedicarboxylic acid Chemical compound OC(=O)C1CCC(C(O)=O)CC1 PXGZQGDTEZPERC-UHFFFAOYSA-N 0.000 description 1
- NEQFBGHQPUXOFH-UHFFFAOYSA-N 4-(4-carboxyphenyl)benzoic acid Chemical compound C1=CC(C(=O)O)=CC=C1C1=CC=C(C(O)=O)C=C1 NEQFBGHQPUXOFH-UHFFFAOYSA-N 0.000 description 1
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- 229920000106 Liquid crystal polymer Polymers 0.000 description 1
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- VCCBEIPGXKNHFW-UHFFFAOYSA-N biphenyl-4,4'-diol Chemical group C1=CC(O)=CC=C1C1=CC=C(O)C=C1 VCCBEIPGXKNHFW-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000000687 hydroquinonyl group Chemical class C1(O)=C(C=C(O)C=C1)* 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000343 polyazomethine Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
本発明は、高弾性率である多層複合射出成形品の製造方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a multilayer composite injection molded article having a high modulus of elasticity.
〈従来の技術〉
サーモトロピックポリマとりわけ液晶ポリエステルは、
射出成形時に高度に配向しガラス繊維などの補強材を添
加することなく高弾性率射出成形品が得られることが知
られている。<Prior art> Thermotropic polymers, especially liquid crystal polyesters,
It is known that highly oriented injection molded articles with high modulus of elasticity can be obtained without adding reinforcing materials such as glass fibers during injection molding.
〈発明が解決しようとしている問題点〉しかしながらこ
れら液晶ポリエステルは、成形品厚みが薄い時には高弾
性率射出成形品が得られるが成形品厚みが厚い時を７−
は低弾性率になることが知られている（Ｗ、 Ｊ、 Ｊ
ａＣ３（ｓｇｎら、Ｊ。<Problems to be solved by the invention> However, with these liquid crystal polyesters, injection molded products with high elastic modulus can be obtained when the thickness of the molded product is thin, but when the thickness of the molded product is thick, 7-
is known to have a low elastic modulus (W, J, J
aC3 (sgn et al., J.
ｐｏ１７ｍ、ＳＣｉ、、ｐｏｔｙｍ、Ｃｈｅｍ、Ｅｄ、
、１４．２０４３ （１９７６））。po17m, SCi,, potym, Chem, Ed,
, 14.2043 (1976)).
そこで我々は、成形品厚みが厚くても高弾性率成形品が
得られるための研究を行ない本発明をなすに到った。Therefore, we conducted research on how to obtain a molded article with a high elastic modulus even if the thickness of the molded article is large, and arrived at the present invention.
〈問題点を解決するための手段〉
即ち本発明は少なくとも一種がサーモトロピックポリマ
である一種以上のポリマを２＠以上の射出ユニットを有
する射出成形機の各射出ユニットから連続的に多層複合
射出成形することを特徴とする多層複合成形品の製造方
法に関するものである。<Means for solving the problem> That is, the present invention continuously performs multilayer composite injection molding of one or more polymers, at least one of which is a thermotropic polymer, from each injection unit of an injection molding machine having two or more injection units. The present invention relates to a method for producing a multilayer composite molded article.
本発明におけるサーモトロピックポリマとは、加熱する
ことによって溶融状態で液晶を形成するポリマであり、
例えばサーモトロピックポリエステル、サーモトロピッ
クポリアゾメチン、サーモトロピックポリエステルアミ
ド、サーモトロピックヒドロキシプロピルセルロースな
ど主鎖型のサーモトロピックポリマーである。The thermotropic polymer in the present invention is a polymer that forms liquid crystal in a molten state by heating,
Examples include main chain type thermotropic polymers such as thermotropic polyester, thermotropic polyazomethine, thermotropic polyester amide, and thermotropic hydroxypropyl cellulose.
これらのうち最も好ましいものはサーモトロピックポリ
エステルであり以下に具体例を下記する。Among these, thermotropic polyesters are most preferred, and specific examples thereof are shown below.
１） ポリ （エチレンテレフタレート／Ｐ−オキシ
ベンゾエート）共重合体などサーモトロピック半芳香族
ポリエステル。1) Thermotropic semi-aromatic polyesters such as poly(ethylene terephthalate/P-oxybenzoate) copolymers.
２）核置換ハイドロキノン、２．６−シオキシナフタレ
ン、４．４’−ジヒドロキシビフェニルなどの芳香族ジ
オキシ化合物とテレフタル酸、４．４’−ジフェニルジ
カルボン酸、１．２−ビス（フェノキシ）エタン−４，
４′−ジカルボン酸、１．２−ビス （２−クロルフェ
ノキシ）エタン−４，４’−ジカルボン酸、２．６−ナ
フタレンジカルボン酸、１．４−シクロヘキサンジカル
ボン酸などのジカルボン酸から生成するサーモトロピッ
クポリエステル及びこれらポリエステルとＰ−オキシ安
息香酸、２．６−オキシナフトエ酸などのオキシカルボ
ン酸とのサーモトロピック共重合ポリエステル。2) Aromatic dioxy compounds such as nuclear-substituted hydroquinone, 2,6-cyoxynaphthalene, and 4,4'-dihydroxybiphenyl with terephthalic acid, 4,4'-diphenyldicarboxylic acid, and 1,2-bis(phenoxy)ethane- 4,
Thermos produced from dicarboxylic acids such as 4'-dicarboxylic acid, 1,2-bis(2-chlorophenoxy)ethane-4,4'-dicarboxylic acid, 2,6-naphthalene dicarboxylic acid, and 1,4-cyclohexanedicarboxylic acid. Tropical polyesters and thermotropic copolymerized polyesters of these polyesters and oxycarboxylic acids such as P-oxybenzoic acid and 2,6-oxynaphthoic acid.
、３）Ｐ−オキシ安息香酸と２．６−オキシナフトエ酸
などのサーモトロピックオキシカルボン酸共重合ポリエ
ステルなどであり弾性率の高いサーモトロピックポリエ
ステルはど好ましい。また、これらポリエステルを７０
モル％以上の構成成分とするポリエステルアミドであっ
てもよい。, 3) Thermotropic polyesters having a high elastic modulus, such as thermotropic oxycarboxylic acid copolyesters such as P-oxybenzoic acid and 2,6-oxynaphthoic acid, are preferred. In addition, these polyesters are
It may be a polyester amide having a mol% or more constituent component.
これらサーモトロピックポリマを多層複合してなる成形
品のポリマの組み合わせとしては、下記のような組み合
わせを考えることができる。The following combinations of polymers can be considered for a molded article formed by a multilayer composite of these thermotropic polymers.
（ａｌ サーモトロピックポリマ（Ａ）／／サーモト
ロピックポリマ囚
（ｂｌ サーモトロピックポリマ（２）Ｉサーモトロ
ピックポリマ（Ｂｌ
（Ｃ１サーモトロピックポリマ（ＡＪＩサーモプラスチ
ックポリマ
は） サーモトロピックポリマ（２）ｌサーモプラスチ
ックポリマＩサーモトロピック４リ マ Ｑす
ｔｅｌ サーモトロピックポリマ（Ａ）／／サーモプ
ラスチックポリマｊサーモトロピックポリマａ３１
（ｆｌ サーモプラスチックポリマｊサーモトロピッ
クポリマ用〃サーモプラスチックポリマ
厚みは０．２ｕ以上、好ましくはｏ、 ｓ ｍ以上であ
る。(al Thermotropic Polymer (A) // Thermotropic Polymer Container (bl Thermotropic Polymer (2) I Thermotropic Polymer (Bl (C1 Thermotropic Polymer (AJI Thermoplastic Polymer)) Thermotropic Polymer (2) I Thermoplastic Polymer I Thermotropic 4 Lima Qstel Thermotropic Polymer (A) // Thermoplastic Polymer J Thermotropic Polymer A31 (fl Thermoplastic Polymer J For Thermotropic Polymer〃Thermoplastic polymer thickness is 0.2u or more, preferably o, s m or more.
また、各層の射出成形品の流動方向が３０゜以上１こ互
に交叉するように多層複合することにより液晶ポリマの
欠点である異方性を減少することも可能である。Furthermore, it is also possible to reduce anisotropy, which is a drawback of liquid crystal polymers, by forming a multilayer composite such that the flow directions of the injection molded products in each layer intersect with each other by 30° or more.
これらのサーモトロピックポリマを多層複合成形するこ
とによって、例えば多層サンドイッチ成形する際Ｐこは
一層のみの成形品の弾性率と多層の成形品の弾性率をほ
ぼ等しくすることができるため、−層の成形品の厚み（
ｔｌと多層（ｎ層）の成形品厚み（ｎｔ）の時の弾性率
とがほぼ等しくなりサーモトロピックポリマの欠点であ
る成形品厚み（１）から成形品厚み（ｎ ｔ）になる時
の弾性率の大幅な低下を抑制することができる。By performing multilayer composite molding of these thermotropic polymers, for example, when performing multilayer sandwich molding, it is possible to make the elastic modulus of a molded product with only one layer almost equal to that of a molded product with multiple layers. Thickness of molded product (
tl and the elastic modulus when the multilayer (n layer) molded product thickness (nt) is almost equal, which is a disadvantage of thermotropic polymers.The elasticity when the molded product thickness changes from (1) to (nt) It is possible to suppress a significant drop in the rate.
一方、サーモトロピックｌリフ以外のポリマな併用する
際には、熱可塑性ポリマとして例えエステルポリカーボ
ネート、ポリカーボネート、６．６、ポリエチレン、ポ
リプロピレン、ポリスチレン、ＡＢＳなどが挙げられる
が、多くのサーモトロピックポリマの流動方向の線膨張
係数はｌ （ｊ’ ａｍ／α／℃以下であることからサ
ーモトロピックポリマとこれら熱可塑性ポリマにガラス
繊維、炭素繊維などの強化剤や充填剤を添加して線膨張
係数を５×ｌＯ″ｃＩＡ／ｃ１１／℃以下に・すること
が好ましい。On the other hand, when using polymers other than thermotropic liff, examples of thermoplastic polymers include ester polycarbonate, polycarbonate, polyethylene, polypropylene, polystyrene, ABS, etc. Since the coefficient of linear expansion in the direction is l (j' am/α/°C or less), reinforcing agents and fillers such as glass fibers and carbon fibers are added to thermotropic polymers and these thermoplastic polymers to increase the coefficient of linear expansion to 5. It is preferable to keep it below ×lO″cIA/c11/°C.
これら熱可塑性ポリマを液晶ポリエステルと併用するこ
とによっても本発明の多層複合成形品を製造することに
より成形品厚みの厚い高弾性率射出成形品を得ることが
できる。By using these thermoplastic polymers in combination with liquid crystalline polyester, it is also possible to produce a thick, high modulus injection molded article by producing the multilayer composite molded article of the present invention.
このように１種以上のポリマな多層複合射出成形するに
は、２個以上の射出ユニットを有した射出成形機が用い
られ、サンドイッチ射出成形機（例えば合成樹脂１７、
（５）、５４（’７１））や二色射出成形機（または多
材質射出成形機）および混色射出成形機などが用いられ
る。これらの射出成形機は公知であるが、サーモトロピ
ックポリマをこれらの成形機で成形されたことはなく、
これらの成形機を用いることによってサーモトロピック
ポリマの最大の欠点である成形品厚みが厚い時の弾性率
の低下を抑制できることは従来の知見からは全く予想で
きない。In order to perform multilayer composite injection molding of one or more types of polymers in this way, an injection molding machine having two or more injection units is used, and a sandwich injection molding machine (for example, a synthetic resin 17,
(5), 54 ('71)), a two-color injection molding machine (or a multi-material injection molding machine), and a mixed-color injection molding machine. Although these injection molding machines are known, thermotropic polymers have never been molded using these machines.
It cannot be predicted from conventional knowledge that by using these molding machines, it is possible to suppress the decline in elastic modulus when the molded product is thick, which is the biggest drawback of thermotropic polymers.
これらの成形機を用いることにより図１に示なお、本発
明の少なくとも一種がサーモトロピックポリマであるポ
リマにガラス繊維、炭素繊維、アスベストなどの強化剤
、充填剤、核剤、顔料、酸化防止剤、安定剤、可塑剤、
滑剤、離型剤および難燃剤なとの添化剤や他の熱可塑性
樹脂を添加して、成形品に所望の特性を付与することが
できる。By using these molding machines, as shown in FIG. 1, at least one of the polymers of the present invention is a thermotropic polymer, reinforcing agents such as glass fibers, carbon fibers, and asbestos, fillers, nucleating agents, pigments, and antioxidants. , stabilizers, plasticizers,
Additives such as lubricants, mold release agents, and flame retardants, as well as other thermoplastic resins, can be added to impart desired properties to the molded article.
本発明の多層複合射出成形品は、その構造と特異なサー
モトロピックポリマの特徴により弾性率が極めて高い。The multilayer composite injection molded article of the present invention has an extremely high modulus of elasticity due to its structure and unique thermotropic polymer characteristics.
以下に実施例を挙げて説明する。Examples will be described below.
〈実施例〉
実施例１
ポリエチレンテレフタレートにＰ−オキシ安息香酸を６
０モル％共重合せしめた液晶ポリエステル（対数粘度０
．６８ ）を以下の条件で成形し三層からなる厚み８■
の三層複合射出成形品を得た。<Example> Example 1 6 P-oxybenzoic acid in polyethylene terephthalate
Liquid crystal polyester copolymerized with 0 mol% (logarithmic viscosity 0
．． 68) under the following conditions to form a three-layer thickness of 8■
A three-layer composite injection molded product was obtained.
−（株）！１住友−ネネ゛タール２色射出成形機を用を
叉転させ内層の両側を同一液晶ポリエステル＋７）２．
．５Ｘ８Ｘ６０１１１（Ｆ）外層２でサンドイッチ成形
し第２図の断面を有した厚み８■の三層からなる複合射
出成形品を得た。- Co., Ltd.! 1) The Sumitomo Nenetal two-color injection molding machine was rotated and both sides of the inner layer were made of the same liquid crystal polyester +7)2.
．． Sandwich molding was performed using outer layer 2 of 5×8×60111 (F) to obtain a three-layer composite injection molded product having a cross section as shown in FIG. 2 and having a thickness of 8 cm.
この成形品は外層と内層が良好に接着しており、外層、
内層の弾性率を測定するため三層成形品を三層に切削し
てそれぞれのサンプルの曲げ弾性率を東洋ボールドウィ
ン（株）Ｉ！！テンシロンＵＴＭ−４でスパン間距離４
０ｍ１．歪速度ｌ藺／分で測定した。This molded product has good adhesion between the outer layer and the inner layer.
To measure the elastic modulus of the inner layer, the three-layer molded product was cut into three layers and the bending elastic modulus of each sample was measured using Toyo Baldwin Co., Ltd. I! ! Tensilon UTM-4 span distance 4
0m1. It was measured at a strain rate of 1/min.
その結果第１表に示すように外層の曲げ弾性率はいずれ
も７．２ＧＰａであり、内層の曲げ弾性率は７．３ＧＰ
ａであった。一方、内層のみ（厚み３ｍｍ）を射出成形
した成形品の曲げ弾性率は７．９ＧＰａであり、これら
の切削して得られた外層、内層のサンプルの曲げ弾性率
はスキン層を切削しているにもかかわらず、内１のみを
成ＧＰ＆と本発明の三層複合成形品の弾性等よりも大き
く弾性前の低下することがわかった。As a result, as shown in Table 1, the bending elastic modulus of the outer layer is 7.2 GPa, and the bending elastic modulus of the inner layer is 7.3 GPa.
It was a. On the other hand, the flexural modulus of a molded product made by injection molding only the inner layer (thickness 3 mm) is 7.9 GPa, and the flexural modulus of samples of the outer layer and inner layer obtained by cutting the skin layer is 7.9 GPa. Nevertheless, it was found that the elasticity of only one of the three-layer composite molded products of the present invention was significantly lower than that of the three-layer composite molded product of the present invention.
第１表 曲げ弾性キ
実施例２
ポリエチレンテレフタレートｔこＰ−オキシ安息香酸を
６０モル％共重合せしめた液晶ポリエステル（対数粘度
０．６８ ’Ｉ とガラス繊維３０％含有ポリエチレン
テレフタレート （デュポン社、ライナイト５３０）を
実施例１）こ示す２色射出成形機を用いて以下のように
射出成形した。Table 1 Bending elasticity Example 2 Liquid crystalline polyester copolymerized with 60 mol% of polyethylene terephthalate and t-P-oxybenzoic acid (logarithmic viscosity 0.68'I) and polyethylene terephthalate containing 30% glass fiber (Dupont, Rynite 530) ) was injection molded in the following manner using the two-color injection molding machine shown in Example 1).
を得た。I got it.
この成形品は外層（液晶ポリエステル）と内層（ライナ
イト５３０）とが良好に接着しており実施例１と同じよ
うに三層【こ切削したサンプルの曲げ弾性′）゛を測定
したところ外層（液晶ポリエステル）はいずれも７．５
ＧＰａであり、内層（ライナイト５３θ）は、９．８０
Ｐａと成形品厚み８ｗ１の高弾性”ポ射出成形品を得る
ことができたＯ
く本発明の効果〉
本発明の方法で得られる多層複合射出成形品は成形品全
体の厚みが厚くても高弾性十を保持し構造材料として有
望である。In this molded product, the outer layer (liquid crystal polyester) and the inner layer (Rynite 530) were well bonded, and the three layers (bending elasticity of the cut sample) were measured in the same way as in Example 1. polyester) are both 7.5
GPa, and the inner layer (Rynite 53θ) is 9.80
Effects of the present invention in which a highly elastic injection molded product with Pa and molded product thickness of 8W1 could be obtained> The multilayer composite injection molded product obtained by the method of the present invention has a high elasticity even if the overall thickness of the molded product is large. It has good elasticity and is promising as a structural material.
第１図Ａ〜工は本発明で得られる多層複合成形品の断面
図、第２図は実施例１で得られた多：ｌｉ ｌ ・・
・・・内層
、：
２・・・・・外層Figures 1-A are cross-sectional views of the multilayer composite molded product obtained in the present invention, and Figure 2 is a cross-sectional view of the multilayer composite molded product obtained in Example 1.
...Inner layer: 2...Outer layer
Claims (1)
上のポリマを２個以上の射出ユニットを有する射出成形
機の各射出ユニットから連続的に多層複合射出成形する
ことを特徴とする多層複合成形品の製造方法。A method for producing a multilayer composite molded article, which comprises continuously performing multilayer composite injection molding of one or more polymers, at least one of which is a thermotropic polymer, from each injection unit of an injection molding machine having two or more injection units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19804786A JPS6354225A (en) | 1986-08-26 | 1986-08-26 | Manufacture of multilayer composite molded item |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19804786A JPS6354225A (en) | 1986-08-26 | 1986-08-26 | Manufacture of multilayer composite molded item |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6354225A true JPS6354225A (en) | 1988-03-08 |
| JPH0367850B2 JPH0367850B2 (en) | 1991-10-24 |
Family
ID=16384649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19804786A Granted JPS6354225A (en) | 1986-08-26 | 1986-08-26 | Manufacture of multilayer composite molded item |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6354225A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0227110A (en) * | 1988-07-15 | 1990-01-29 | Nippon Petrochem Co Ltd | Muffler |
| JPH02220821A (en) * | 1989-02-22 | 1990-09-04 | Toppan Printing Co Ltd | Multi-layered molded product |
-
1986
- 1986-08-26 JP JP19804786A patent/JPS6354225A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0227110A (en) * | 1988-07-15 | 1990-01-29 | Nippon Petrochem Co Ltd | Muffler |
| JPH02220821A (en) * | 1989-02-22 | 1990-09-04 | Toppan Printing Co Ltd | Multi-layered molded product |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0367850B2 (en) | 1991-10-24 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |