CN1489536A - 边窗型气囊及其制造过程 - Google Patents

边窗型气囊及其制造过程 Download PDF

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CN1489536A
CN1489536A CNA018218199A CN01821819A CN1489536A CN 1489536 A CN1489536 A CN 1489536A CN A018218199 A CNA018218199 A CN A018218199A CN 01821819 A CN01821819 A CN 01821819A CN 1489536 A CN1489536 A CN 1489536A
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金光五
李相牧
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Kolon Industries Inc
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Abstract

本发明涉及一种在车辆翻转或滚动情况下防止乘客被车辆侧边玻璃窗或结构伤害的边窗型气囊。本发明的边窗型气囊,其特征在于,以热塑性多纤维丝为材料的气囊的上部和下部是缝合成的,将一种橡胶材料涂在或将一种粘合膜薄片叠压在包括缝合部分的气囊的上部和下部,缝合部分单位长度上的漏气量(在压力2.5KPa下测试)小于0.8L/min.cm。本发明的气囊可通过防止空气泄漏在车辆翻转情况下安全保护乘客。

Description

边窗型气囊及其制造过程
发明领域
本发明涉及安装在车辆的侧边玻璃窗或结构上的气囊(在下文中称作边窗型气囊),它用来保护乘客在侧边受到撞击情况下不受冲击,防止他们不受车辆的侧边玻璃窗或结构的撞击。本发明还涉及制造该气囊的方法。
一般来说,橡胶材料例如硅橡胶、氯丁二烯橡胶等均匀涂在织物上,然后将其裁剪、缝成气囊。安装在车辆前部的普通气囊在遇到碰撞时会快速被爆炸性气体胀大,然后胀大的气囊中的气体应在很短的时间内放出,使乘客受到胀大气囊的第二次冲击尽量减轻,同时确保驾驶员的视野范围。因此安装在车辆前部的大多数传统气囊都配有放气的排气孔。
因为边窗型气囊是保护乘客在车辆翻转或滚动情况下免受被车辆侧边玻璃窗或结构的伤害,那么当车辆翻转时为了安全地保护乘客的头部,边窗型气囊的膨胀状态应保持几秒钟,更恰当是保持5秒钟以上。因此不能从膨胀气囊的织物和缝合部分泄漏更多的气体。
因此通常在边窗型气囊上不配有放气的排气孔。
背景技术
美国专利5,685,347提出了一种在提兰织布机上同时编织气囊的上部和下部的方法,这种方法可防止过多的空气从气囊的缝合部分泄漏。但用此法需要配有昂贵电子设备的提兰织布机,而且把编织式样编程或输入这种织布机是非常复杂的。
另外,由这种方法制成的气囊的织物连接部分不牢,当气囊胀大时,此连接部分会产生裂缝,使空气从裂缝中泄漏,而且连接部分的拉伸性能也很弱。
日本公开专利Hei 4-81342,Hei 4-197848,Hei 3-10946等提出了密封气囊的方法,这种方法是先缝制涂有橡胶的织物,制成气囊,然后用胶带密封气囊的缝合部分。然而,这种方法添加了密封过程,所以制作过程复杂,成本也就增大。
同时也提出了一种缝制涂有硅橡胶的织物来制作边窗型气囊的方法,但缝合部分没有密封。因为缝合部分单位长度上的漏气量较高,这种方法不适合边窗型气囊的制作。
发明内容
本发明的目的是提供一种制作缝合部分单位长度上的漏气量不超过0.8L/min·cm的边窗型气囊的方法。
本发明的另一目的是提供一种边窗型气囊,该气囊通过抑制膨胀气囊的空气泄漏使膨胀状态保持至少5秒,可以防止乘客被车辆的侧边玻璃窗等的碰撞。
本发明的边窗型气囊,其特征在于,以热塑性多纤维丝为材料构成的此气囊的上部和下部是缝制结合的,将一种橡胶材料涂在包括缝合部分的气囊的上部和/或下部,或将一种粘合膜叠压在包括缝合部分的气囊的上部和/或下部。缝合部分单位长度上的漏气量(在压力2.5KPa下测试)小于0.8L/min·cm。
本发明制作边窗型气囊的方法,其特征在于,将以热塑性多纤维丝为材料的未涂层或未叠压的织物缝制成气囊,然后将一种橡胶材料涂在缝合气囊的上部和/或下部,或将一种粘合膜叠压在缝合气囊的上部和/或下部。
在下面,本发明将结合附图详细叙述。
本发明的边窗型气囊可以用下面几种方法制作。
本发明的第一种方法,把热塑性多纤维丝织成的织物(下文中我们称为气囊用的织物)裁剪成气囊的上部和下部,然后缝制成气囊。
在此情况下,可以用聚酰胺多纤维丝、聚酯多纤维丝等作为织物的热塑性多纤维丝,但240-420旦尼尔的聚酰胺多纤维丝更适合。
因为本发明的气囊安装在车辆的侧面,小体积的气囊更适合。因此多纤维丝的细度为210-420旦尼尔更适合。
然后将一种橡胶材料涂在或将一种粘合膜叠压在缝合好的气囊的上部和/或下部。
作为橡胶材料,可以用硅橡胶、氯丁二烯橡胶、聚氨酯橡胶等,但乳液聚合型硅橡胶更容易涂布。
硅橡胶可用刮刀涂布法,浸涂法,喷涂法涂在气囊的上部和/或下部。但喷涂法和浸浸法比刮刀涂布法更适合连续过程。
作为橡胶材料,可以用硅橡胶、氯丁二烯橡胶、聚氨酯橡胶等。气囊的单位面积上橡胶的涂布量为15-200g/m2更适合。
如果气囊的单位面积上的橡胶涂布量小于15g/m2,那么因为漏气量增加边窗型气囊的膨胀状态不能保持5秒以上。如果气囊的单位面积上的橡胶涂布量大于200g/m2,那么膨胀状态保持时间太长,气囊的体积增大,也会发生问题。
同时,也可将粘合膜叠压在气囊的上部和/或下部,而不是将橡胶材料涂在其上面。
粘合膜可用聚氨酯树脂、聚醚树脂、聚丙烯树脂、聚乙烯树脂、聚酰胺树脂或它们的共聚物。
粘合膜的厚度为5-100μm更适合。如果粘合膜的厚度小于5μm,缝合部分单位长度上的漏气量增加。如果粘合膜的厚度大于100μm,模量折叠性质变差。
本发明的第二种方法,折叠两层以上的热塑性多纤维丝织物,缝制成气囊。
具体地说,在原始宽度上把织物折叠,然后进行涂布和裁剪,缝制成图1所示形式的气囊。
用CAD功能缝纫机缝制织物更适合。
织物的多纤维丝的类型和细度与第一种方法所述相同。
接着,将一种橡胶材料涂在或将一种粘合膜叠压在图1所示的缝合好的织物(1)上,然后沿着缝合线(2)裁剪织物成为边窗型气囊。
橡胶材料的种类、单位面积的涂布量、涂布方法、粘合膜的种类或厚度与第一种方法所述相同。
本发明的特征在于,先缝制气囊用的织物,然后将一种橡胶材料涂在或一种粘合膜叠压在缝制气囊的上部和/或下部。
具体地说,本发明的特征在于,先把未涂布或未叠压的织物缝制成为气囊的形式,然后将橡胶材料涂在或将粘合膜叠压在气囊上。
本发明具有涂布过程和密封过程同时进行的效果,因为它将橡胶材料涂在或将粘合膜叠压在包括缝合部分的气囊的全部表面上。
这样,本发明的制作过程简化了,成本也降低了。
本发明气囊的缝合部分单位长度上的漏气量(在压力2.5KPa下测试)小于0.8L/min·cm,因为橡胶材料涂在或粘合膜叠压在气囊的缝合部分上。
因此,本发明的气囊能更有效地保护车辆中的乘客,因为在车辆翻转或滚动情况下气囊的膨胀状态可以保持至少5秒。
在本发明中,缝合部分单位长度上的漏气量用备有调节器,流量计和压力计的检测仪测量得到。
具体地说,在压力2.5KPa下将空气充入气囊中使其完全膨胀,测量单位时间内(1分钟)气囊的漏气量,单位时间的漏气量除以气囊缝合部分的整个长度得到缝合部分单位长度的漏气量。在测试中,假设气囊织物缝合部分以外的部分漏气量为零(0升)。
图例的简明描述
图1为缝合好的尚未经裁剪的本发明边窗型气囊的平面图。
图2为经粘合膜叠压的本发明的边窗型气囊的平面图。
图3(a)-3(c)为图2的A-A′部分的截面图。在上述各图中,1为气囊织物,2为缝合部分,3为粘合膜,4为硅橡胶。
本发明的最佳实施方式
本发明将通过下面的实施例和比较例来更加具体说明,但本发明不局限于这些实施例。
实施例1
编织66 210旦尼尔的聚酰胺的经线和纬线进行织造,将织成的织物再进行煮练、热处理,得到密度为76单丝/英寸×72单丝/英寸的光面织物。将制成的织物裁剪成气囊的上部和下部,缝制成边窗型气囊。用浸涂法将乳液聚合型硅树脂涂在气囊的上部和下部(涂布量:35g/m2),然后烘干、固化制成边窗型气囊。这样制成的气囊的缝合部分,在压力2.5KPa下测试,单位长度上的漏气量为0.45L/min·cm。
实施例2
将66 315旦尼尔的聚酰胺的经线和纬线织造,将织成的机织织物进行煮练、热处理,得到密度为60单丝/英寸×60单丝/英寸的光面织物。将制成的织物裁剪成气囊的上部和下部,缝制成边窗型气囊。用刮刀涂布法将乳液聚合型硅树脂涂在气囊的上部和下部(涂布量:25g/m2),然后烘干、固化制成边窗型气囊。这样制成的气囊的缝合部分,在压力2.5KPa下测试,单位长度上的漏气量为0.63L/min·cm。
实施例3
将66 420旦尼尔的聚酰胺的经线和纬线进行织造,将织成的机织织物进行煮练,热处理得到密度为49单丝/英寸×49单丝/英寸的光面织物。将制成的织物裁剪成气囊的上部和下部,缝制成边窗型气囊。用浸渍法将乳液聚合型硅树脂涂在气囊的上部和下部(涂布量:35g/m2),然后烘干、固化制成边窗型气囊。这样制成的气囊的缝合部分,在压力2.5KPa下测试,单位长度上的漏气量为0.39L/min·cm。
实施例4
将66 420旦尼尔的聚酰胺的经线和纬线进行织造,将织成的机织织物进行煮练,热处理得到密度为49单丝/英寸×49单丝/英寸的光面织物。将制成的织物裁剪成气囊的上部和下部,缝制成边窗型气囊。将聚酰胺树脂粘合膜(厚度30μm)叠压在气囊的上部和下部,然后烘干、固化制成边窗型气囊。这样制成的气囊的缝合部分,在压力2.5KPa下测试,单位长度上的漏气量为0.39L/min·cm。
实施例5
将66 210旦尼尔的聚酰胺的经线和纬线进行织造,将织成的机织织物进行煮练,热处理得到密度为70单丝/英寸×70单丝/英寸的光面织物。将此机织织物折叠,在织物的宽度上缝制几个边窗型气囊。用刮刀涂布法将硅橡胶涂布在缝制的织物的所有表面(涂布量:35g/m2),然后沿着缝合线裁剪成边窗型气囊。这样制成的气囊的缝合部分,在压力2.5KPa下测试,单位长度上的漏气量为0.45L/min·cm。
实施例6
将66 315旦尼尔的聚酰胺的经线和纬线进行织造,将织成的机织织物进行煮练,热处理得到密度为60单丝/英寸×60单丝/英寸的光面织物。将此机织织物折叠,在织物的宽度上缝制几个边窗型气囊。用喷涂法将乳液聚合型硅树脂涂布在缝制的织物的所有表面(涂布量:55g/m2),然后沿着缝合线裁剪成边窗型气囊。这样制成的气囊的缝合部分,在压力2.5KPa下测试,单位长度上的漏气量为0.43L/min·cm。
实施例7
将66 420旦尼尔的聚酰胺的经线和纬线进行织造,将织成的机织织物进行煮练,热处理得到密度为49单丝/英寸×49单丝/英寸的光面织物。将此机织织物折叠,在织物的宽度上缝制几个边窗型气囊。用浸涂法将乳液聚合型硅树脂涂布在缝制的织物的所有表面(涂布量:65g/m2),然后沿着缝合线裁剪成边窗型气囊。这样制成的气囊的缝合部分,在压力2.5KPa下测试,单位长度上的漏气量为0.40L/min·cm。
实施例8
将66 420旦尼尔的聚酰胺的经线和纬线进行织造,将织成的机织织物进行煮练,热处理得到密度为49单丝/英寸×49单丝/英寸的光面织物。折叠此机织织物,在织物的宽度上缝制几个边窗型气囊。将聚酯粘合膜(厚度40μm)叠压在缝制的织物的所有表面,然后沿着缝合线裁剪成边窗型气囊。这样制成的气囊的缝合部分,在压力2.5KPa下测试,单位长度上的漏气量为0.40L/min·cm。
比较例1
将66 210旦尼尔的聚酰胺的经线和纬线进行织造,将织成的机织织物进行煮练,热处理得到密度为70单丝/英寸×70单丝/英寸的光面织物。用刮刀涂布法将硅橡胶涂在织物上(涂布量:35g/m2)。将涂布后的织物裁剪成边窗型气囊的上部和下部,然后缝制成边窗型气囊。这样制成的气囊的缝合部分,在压力2.5KPa下测试,单位长度上的漏气量为0.85L/min·cm。
比较例2
将66 315旦尼尔的聚酰胺的经线和纬线进行织造,将织成的机织织物进行煮练,热处理得到密度为60单丝/英寸×60单丝/英寸的光面织物。用刮刀涂布法将硅橡胶涂在制成的织物上(涂布量:30g/m2)。将涂布后的织物裁剪成边窗型气囊的上部和下部,然后缝制成边窗型气囊。这样制成的气囊的缝合部分,在压力2.5KPa下测试,单位长度上的漏气量为0.88L/min·cm。
比较例3
将66 420旦尼尔的聚酰胺的经线和纬线进行织造,将织成的机织织物进行煮练,热处理得到密度为49单丝/英寸×49单丝/英寸的光面织物。用刮刀涂布法将硅橡胶涂在制成的织物上(涂布量:35g/m2)。将涂布后的织物裁剪成边窗型气囊的上部和下部,然后缝制成边窗型气囊。这样制成的气囊的缝合部分,在压力2.5KPa下测试,单位长度上的漏气量为0.93L/min·cm。
比较例4
将66 210旦尼尔的聚酰胺的经线和纬线进行织造,将织成的机织织物进行煮练,热处理得到密度为70单丝/英寸×70单丝/英寸的光面织物。用刮刀涂布法将硅橡胶涂在制成的织物上(涂布量:35g/m2)。将涂布后的织物裁剪,然后缝制成边窗型气囊。这样制成的气囊的缝合部分,在压力2.5KPa下测试,单位长度上的漏气量为0.86L/min·cm。
工业应用
因为本发明的边窗型气囊能保持膨胀状态至少5秒,因此将它安装在车辆的侧边玻璃窗或结构上非常有用,就能在车辆翻转情况下安全保护乘客。
另外,因为本发明省略了密封过程,因此本发明的制作过程简单化了。

Claims (15)

1.一种制作边窗型气囊的方法,其特征在于,将以热塑性多纤维丝为材料构成的未涂层或未叠压的织物先缝制成气囊,然后将一种橡胶材料涂在或将一种粘合膜叠压在缝制气囊的上部和/或下部。
2.如权利要求1所述的方法,其特征在于,橡胶材料是硅橡胶,氯丁二烯橡胶,聚氨酯橡胶。
3.如权利要求1所述的方法,其特征在于,用喷涂法将硅橡胶涂布在缝制成的气囊的上部和/或下部。
4.如权利要求1所述的方法,其特征在于,用刮刀涂布法将硅橡胶涂布在缝制成的气囊的上部和/或下部。
5.如权利要求1所述的方法,其特征在于,用浸涂法将硅橡胶涂布在缝制成的气囊的上部和/或下部。
6.如权利要求1所述的方法,其特征在于,橡胶材料的涂布量为15g/m2-200g/m2
7.如权利要求1所述的方法,其特征在于,在缝制前将织物裁剪成气囊的上部和下部。
8.如权利要求1所述的方法,其特征在于,在将折叠的织物在全部宽度上缝制成几种形式的气囊,然后将织物裁剪成边窗型气囊,将橡胶材料涂在或将粘合膜叠压在缝合的气囊上。
9.如权利要求1所述的方法,其特征在于,粘合膜的厚度为5-100μm。
10.如权利要求1所述的方法,其特征在于,粘合膜的材料是聚氨酯树脂、聚醚树脂、聚丙烯树脂、聚乙烯树脂、聚酰胺树脂或上述树脂的共聚物。
11.边窗型气囊,其特征在于,将以热塑性多纤维丝为材料构成的气囊的上部和下部缝合起来,然后将一种橡胶材料涂在或将一种粘合膜薄片叠压在包括缝合部分的气囊的上部和下部。
12.如权利要求11所述的边窗型气囊,缝合部分单位长度上的漏气量(在压力2.5KPa下测试)小于0.8L/min·cm。
13.如权利要求11所述的边窗型气囊,缝合部分用硅橡胶涂布。
14.如权利要求11所述的边窗型气囊,粘合膜的厚度为5-100μm。
15.如权利要求11所述的边窗型气囊,粘合膜的材料为聚氨酯树脂,聚醚树脂,聚丙烯树脂,聚乙烯树脂,聚酰胺树脂或上述树脂的共聚物。
CNA018218199A 2001-01-09 2001-10-25 边窗型气囊及其制造过程 Pending CN1489536A (zh)

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