CN1051280C - 使用双金属带生产印刷线路用的带有金属薄层的层压塑料的方法 - Google Patents

使用双金属带生产印刷线路用的带有金属薄层的层压塑料的方法 Download PDF

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CN1051280C
CN1051280C CN94102783A CN94102783A CN1051280C CN 1051280 C CN1051280 C CN 1051280C CN 94102783 A CN94102783 A CN 94102783A CN 94102783 A CN94102783 A CN 94102783A CN 1051280 C CN1051280 C CN 1051280C
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布鲁诺·塞拉索
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Abstract

本发明涉及一种制造特别是印刷线路用的层压塑料的方法，各构件被组合成排列为垛(10)的各组件(11～14)，在该方法中每一层压塑料的二表面上的薄片分别是由二条连续的带子(20，30)制成的，所说的二条连续的带子交替地呈蛇形铺置而形成为每一个形成的组件(11～14)的上下薄片，通过电加热元件对所说的组件(11～14)进行内加热，而电加热元件是通过将二条带子的端点连接到合适功率的电流发生器(50)形成的。

Description

使用双金属带生产印刷线路用的带有金属薄层的层压塑料的方法
本发明涉及使用金属薄层制造层压塑料的方法。
在正常形式中层压塑料是由通过压缩而牢固地连接在一起的，在纸、玻璃纤维或其他材料的底基上的塑料的若干层组成的。
塑料可以是酚醛塑料、三聚氰胺塑料、环氧塑料、聚酯塑料、硅塑料、氟树脂等等。
在生产印刷线路时，在压制过程中使金属薄层、特别是铜箔粘合到线路板的一面或两面上。
首先由基本上类似的组件形成组件垛，每一个组件包括许多用塑料浸渍的片材与置于最外面的铜薄层。金属片例如不锈钢片或其他金属片被置于每一组件之间并将组件垛置于能同时加热与加压的多层压机中。
在包括冷却步骤的热循环结束时，得到其各别构件被紧密地连接在一起的紧密而刚硬的产品。
适用于此类生产的压机是复杂的并且生产率很低，因为具有许多块同时在明确限定的、准确程序中产生热与压力的压板，而热必须通过传导而在垛的每个组件中形成均匀的温度(但是，很显然，只有处于垛的顶部与底部的组件是与加热板接触的)。
许多加热板的存在不仅使压机的结构复杂，而且使组件的装卸操作时间延长和难于降低成本，而在整个短的生产运行时间中产生许多问题。
特别是，热从压板穿过细件垛的贯穿受到阻碍，因为热必须经过一段距离才能达到最内部组件。这些困难引起压机本身及其运行费用很高、材料的浪费、加工时间长等问题，并因此使产品成本更高。
此处提出的发明不仅大大地减轻了上述的缺陷，还提供了如下面将要说明的有重要意义的优点。
本发明涉及一种制造层压塑料、特别是制造印刷线路用的层压塑料的方法。该方法包括：通过形成组件垛，每一组件包括在下文中被称为“预浸料坯”或其他材料的高绝缘板的预浸料坯，和在所说的预浸料坯两面上的在下文中被称为“薄片”的特别是铜的金属薄片。将在下文中被称为“片材”的不锈钢或其他材料的片材铺设于一个组件与另一个组件之间。将组件垛铺设在同时施加压力与热的压机中制造层压塑料、特别是制造印刷线路用的层压塑料的方法。
根据本发明二薄片是由二连续的金属带子制成的。
将第一条带子的第一段铺设第一个组件的预浸坯料的第一表面上。
将第二条带子的第一段铺设在第一组件的预浸坯料的第二表面上，在放置一块片材后和在第二条带子被弯曲180°后将第二条带子的第二段放置在所说的片材的的第二表面上。
将第一条带子的第二段铺装在第一组件之后的第二组件的预浸坯料的第二表面上，在放置第二块片材后和在第一条带子被弯曲180°后将所说的第一条带子的第三段放置在所说的片材的第二表面上。
将第二条带子的第三段铺装在第三组件的预浸坯料的第二表面上，在放置第三块片材后和在第二条带子被弯曲180°后将所说的第二条带子的第四段放置在所说的片材的第二表面上等等，直至形成组件垛时为止。在二条带子之间保持一电绝缘层。
将两条带子的两端接到合适的电源上。
这样，当适当的压力施加在组件垛上并闭合电源时，两条带子的各段将分别与组件的二表面相配合并起电加热元件的作用，使不同层紧密接触并形成层压塑料。
电绝缘用的插入层被置于片材与连续的带子之间。
两条带子优选由铜制成。
在优选的实施方案中两条带子通过弯曲180°而交替地处于组件的一侧与另一侧。这是本发明的优点。
组件垛上的压力可通过将所说的组件垛放置在冷压机或热压机中来确定。
在一优选的实施例中，组件垛被置于具有通过支座与导引杆相连的上下压板的压模中。
工作中所需的压力是通过将压模置于冷压机或热压机中而获得的。
本发明明显地具有许多优点。
压机无须同时提供压力与热，它可以是一台简单的、具有不同类型和功率的压机，只要能根据所需的层压制品类型产生足够的压力的均可。
加热发生在每一组件的内部，由此而使在短的时间内在所有的构件中能达到均匀的温度。
可以进行一系列的大批量和少批量的生产。
加热要比现有压机的加热快得多，在现有压机中加热到组件垛的内部必须穿过相当的距离。
通过使用这种由在组件垛二端的加热板的惯用的加热形式与此内加热形式相结合的混合加热形式，加工时间被缩短而产率却大大地提高。
不仅使工作程序更快更简单，而且还降低了废品并因此显著地降低了生产成本。
从下面由附图所示的实施例中将可以更清楚地看出本发明的特征与目的。
图1所表示的是处在冷的压机中的带有金属薄片的组件垛，所述的金属薄片是由铜带制成的并以蛇形被铺设。
被置于压机100的压板101，102之间的组件垛10是由组件11～14组成的，每一组件包括用环氧树脂浸渍的玻璃纤维层。钢片40～44与电绝缘用的插入层18一起被置于一个组件与另一个组件之间。被置于下压板102上的是钢片40已在其上放置绝缘材料层18，在绝缘材料层18的顶部是第一条铜带20的第一段21。在所说的段21上是预浸坯料层15而在预浸坯料层15上的是第二条铜带30的第一段31和绝缘材料层18，由它们形成第一个组件11。
然后铺设钢片41与绝缘材料层18。在第二条铜带已被急转180°32后，在所说的绝缘材料层18上铺设第二条铜带的段33。然后将第二个预浸坯料层15置于其上，在第一条铜带22弯曲180°后在第二个预浸坯料层15上铺设第一条铜带20的第二段23而形成第二组件12。
在铺设绝缘材料层18、第三块不锈钢片42和另一绝缘材料层18后，使第一条铜带20在24处被第二次弯曲180°后并将其第三段25铺在片42上。
在使第二条铜带30在34处第二次弯曲180°后将第二条铜带铺在第三层预浸坯料15上并形成组件13。
最后，第一条铜带20的末端26出现在组件的顶面而第二条铜带显露出其末端36。
在组件成型开始时，将二条铜带连接到连接件19，29并被引导到51。
将二条铜带的起始端与末端分别通过连接件19，29和27，37连接并引导到电流发生器50。
当闭合电路的同时启动压机100时，带20和30起电加热元件的作用并使热按箭头所指过到组件11～14。
然后在内加热的同时进行压制加工。

Claims (9)

1.一种通过形成组件(11～14)垛(10)，每一组件包括在下文中被称为“预浸料坯”的高绝缘层的预浸料坯(15)和在所说的预浸料坯两面上的、在下文中被称为“薄片”的、特别是铜的金属薄片(20～25)，在所说的预浸料坯的每一面上是在下文中被称为“片材”的不锈钢或其他材料的片材(40～44)，所说的片材被置于一个组件与另一个组件之间，然后将组件垛放置到压机中以接受压力与热而制造层压塑料、特别是制造印刷线路用的层压塑料的方法，其特征在于两薄片是由二条连续的带子(20，30)制成的，第一条带子(20)的第一段(21)被铺在第一组件(11)的预浸料坯(15)的第一表面上，第二条带子(30)的第一段(31)被铺在第一组件(11)的预浸料坯(15)的第二表面上，在放置片材(41)和将带子(30)弯曲180°后，第二条带子的第二段(33)被置于此最近的片材(41)的第二表面上，第一条带子(20)的第二段(23)被置于第二组件(12)的预浸料坯(15)的第二表面上，在放置第二块片材(42)和将第一条带子(20)的第三段(25)放置在所说的片材(42)的第二表面上，在弯曲180°后将第二条带子(30)的第三段置于第三组件(13)的预浸料坯(15)的第二表面上，并依次继续下去直至组件(11～14)垛(10)完成为止，在二条带子(20，30)之间保持电绝缘，此二条带子(20，30)的第一端和末端被连接到合适功率的电流发生器(50)，由此通过组件(11～14)垛(10)在施加合适的压力和闭合电流发生器(50)的电路，使分别与组件(11～14)的一个表面与另一个表面相配合的两条带子(20，30)的各段起电加热元件的作用，在不同的层(15，20，30)之间达到紧密的连接并形成层压塑料。
2.如权利要求1所述的方法，其特征在于提供高的电绝缘的层(18)或其等同物被放置在片材(40～41)与连续的带子(20，30)之间。
3.如权利要求1所述的方法，其特征在于带子(20，30)是由铜制成的。
4.如权利要求1所述的方法，其特征在于带子(20，30)的两端从垛(10)的同一侧出来，以便于与电流发生器(50)相连接。
5.如权利要求1所述的方法，其特征在于二条带子(20，30)的每一条在垛(10)的组件(11～14)的一侧与另一侧上被交替地弯曲180°。
6.如权利要求1所述的方法，其特征在于在组件(11～14)垛(10)上的压力是通过将所说的垛(10)放入到冷压机(100)内而获得的。
7.如权利要求1所述的方法，其特征在于在组件(11～14)垛(10)上的压力是通过将所说的垛(10)放入到热压机内而获得的。
8.如权利要求1所述的方法，其特征在于在每一组件垛(10)被放入到带有通过支座与导引杆相连的上、下压板的压模中，所需的工作压力是通过将所说的压模放入到冷压机中而获得的。
9.如权利要求1所述的方法，其特征在于在每一组件垛被放入到带有通过支座与导引杆相连的上、下压板的压模中，所需的工作压力是通过将所说的压模放入到热压机中而获得的。
CN94102783A 1993-02-10 1994-02-09 使用双金属带生产印刷线路用的带有金属薄层的层压塑料的方法 Expired - Lifetime CN1051280C (zh)

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WO1994017976A1 (en) 1994-08-18
KR100256140B1 (ko) 2000-05-15
EP0683716A1 (en) 1995-11-29
DE69312325T2 (de) 1998-01-29
DE69312325D1 (de) 1997-08-21
AU4042893A (en) 1994-08-29
JPH08506289A (ja) 1996-07-09
ATE155387T1 (de) 1997-08-15
JP2794614B2 (ja) 1998-09-10
ITMI930224A0 (it) 1993-02-10
ITMI930224A1 (it) 1994-08-10
KR960700135A (ko) 1996-01-19
CA2154446A1 (en) 1994-08-18
GR3025013T3 (en) 1998-01-30
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IT1271942B (it) 1997-06-10

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