CN202242202U - 带聚氨酯弹性体高粘表层的eva片材 - Google Patents

带聚氨酯弹性体高粘表层的eva片材 Download PDF

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Publication number
CN202242202U
CN202242202U CN2011202944298U CN201120294429U CN202242202U CN 202242202 U CN202242202 U CN 202242202U CN 2011202944298 U CN2011202944298 U CN 2011202944298U CN 201120294429 U CN201120294429 U CN 201120294429U CN 202242202 U CN202242202 U CN 202242202U
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Prior art keywords
eva
elastic body
materials
sheet material
layer
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CN2011202944298U
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Inventor
郭虎
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KUNSHAN TONGCHANG AUTOMOTIVE NEW MATERIALS CO., LTD.
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KUNSHAN YIWEI AUTOMOBILE NEW MATERIAL CO Ltd
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Abstract

本实用新型公开了一种带聚氨酯弹性体高粘表层的EVA片材，其以EVA材料作为基材，在所述基材的一侧面上设有薄膜层，所述薄膜层背向所述基材的侧面上设有PU泡沫层。将EVA材料与聚氨酯弹性体材料通过高温高压共挤熔合于一体，形成的材料层之间的粘结力很大、密不可分；且聚氨酯弹性体材料与后续发泡用的PU发泡材料之间有很好的相容性，两者之间能紧密粘结，进而PU发泡材料便可通过聚氨酯弹性体材料层与EVA表皮形成整体的粘合，彻底解决了PU泡沫层与EVA表皮的分层现象。本实用新型复合效率高，且能够连续生产、成本低。

Description

带聚氨酯弹性体高粘表层的EVA片材
技术领域
本实用新型涉及一种高分子材料复合领域，具体提供一种带聚氨酯弹性体高粘表层的EVA片材。
背景技术
现有技术中，汽车前围一般采用EVA片材表皮通过吸塑或模压成型，然后再将EVA片材放入发泡模，向发泡模中充入双组份的PU发泡料，从而形成表皮为EVA、背面为聚氨酯软质泡沫的前围部件。但在实际生产中，因EVA表面极性与PU发泡料的相容性不好，因此经常会出现EVA与PU泡沫分层现象，从而破坏汽车前围部件的整体性，影响部件的使用。
发明内容
为了克服上述缺陷，本实用新型提供了一种带聚氨酯弹性体高粘表层的EVA片材，该EVA片材的层间粘结力大，不易分层。
本实用新型为了解决其技术问题所采用的技术方案是：一种带聚氨酯弹性体高粘表层的EVA片材，其以EVA材料作为基材，在所述基材的一侧面上设有薄膜层，所述薄膜层背向所述基材的侧面上设有后续发泡用的PU泡沫层。
作为本实用新型的进一步改进，所述薄膜层为TPU薄膜。
本实用新型的有益效果是：将EVA材料与聚氨酯弹性体材料通过高温高压共挤熔合于一体，形成的材料层之间的粘结力很大、密不可分；且聚氨酯弹性体材料与后续发泡用的PU发泡材料之间有很好的相容性，两者之间能紧密粘结，进而PU发泡材料便可通过聚氨酯弹性体材料层与EVA表皮形成整体的粘合，彻底解决了PU泡沫层与EVA表皮的分层现象。本实用新型复合效率高，且能够连续生产、成本低。
附图说明
图1为本实用新型结构示意图。
具体实施方式
下面参照附图对本实用新型的一种带聚氨酯弹性体高粘表层的EVA片材的实施例进行详细说明。
本实用新型的一种带聚氨酯弹性体高粘表层的EVA片材，其以EVA 1材料作为基材，在所述基材的一侧面上设有薄膜层2，所述薄膜层背向所述基材的侧面上设有后续发泡用的PU泡沫层3。
在本实施例中，所述薄膜层为TPU薄膜。
在本实施例中，带聚氨酯弹性体高粘表层的发泡前围用EVA片材的制备过程为：首先分别将EVA材料和TPU材料均挤出到同一个分配器中，通过调节两种材料的挤出量，使两种材料在高温高压条件下完全熔为一体，形成一个两面为不同材质的片材；然后对片材进行模压成型处理，即将EVA面层作为外层面，TPU薄膜层作为内层，加工成规定形状的成型件；紧接着将成型件放入发泡模内，使TPU薄膜层与PU发泡材料相粘结，从而在TPU薄膜层表面形成一层PU泡沫层；最后将发泡后的成型件进行后续的切边切孔处理，制成符合规定形状的EVA发泡前围部件。

Claims (2)

1.一种带聚氨酯弹性体高粘表层的EVA片材，其特征在于：其以EVA(1)材料作为基材，在所述基材的一侧面上设有薄膜层(2)，所述薄膜层背向所述基材的侧面上设有PU泡沫层(3)。
2.根据权利要求1所述的带聚氨酯弹性体高粘表层的EVA片材，其特征在于：所述薄膜层为TPU薄膜。
CN2011202944298U 2011-08-15 2011-08-15 带聚氨酯弹性体高粘表层的eva片材 Expired - Fee Related CN202242202U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102935750A (zh) * 2011-08-15 2013-02-20 昆山依维艾汽车新材料有限公司 带聚氨酯弹性体高粘表层的eva片材

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102935750A (zh) * 2011-08-15 2013-02-20 昆山依维艾汽车新材料有限公司 带聚氨酯弹性体高粘表层的eva片材

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Address before: 315000, room 13, No. 168, Lane 606, Zhangshu street, Jiangdong District, Zhejiang, Ningbo

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Granted publication date: 20120530

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