CN109130442B - 一种利用淋膜、压延工艺压贴木皮的一体成型加工工艺 - Google Patents

一种利用淋膜、压延工艺压贴木皮的一体成型加工工艺 Download PDF

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CN109130442B
CN109130442B CN201810926474.7A CN201810926474A CN109130442B CN 109130442 B CN109130442 B CN 109130442B CN 201810926474 A CN201810926474 A CN 201810926474A CN 109130442 B CN109130442 B CN 109130442B
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王黄志
王灿义
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Shanghai Chengjian Environmental Protection Technology Co.,Ltd.
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Abstract

本发明公开了一种利用淋膜、压延工艺压贴木皮一体成型的加工工艺,其技术方案要点是:包括以下步骤:a、拼皮:沿纵或横向无缝拼接木皮成片,确保木皮宽幅最大化,同时修饰木皮表面透底纹络,采取同木纹颜色填充,确保薄木皮整体外观统一实色无异常透底等现象;b、挤出流延:将不同性能的塑胶原料中的一种或几种混合投入挤出机料斗中,通过加热、混炼、塑化、挤出,在淋膜机上挤出流延成膜,在淋膜机上挤出流延成膜,将薄膜调节至要求的厚度及偏差;c、淋膜压贴:在调整好的流延膜上,将拼接好的木皮及耐高温基膜引入压延辊组进行多辊组压合;d、冷却成型:压贴后的木皮经冷却、切边,通过收卷机收成卷材。

Description

一种利用淋膜、压延工艺压贴木皮的一体成型加工工艺
【技术领域】
本发明属于木材加工技术领域,具体涉及一种利用淋膜、压延工艺压贴木皮的一体成型加工工艺。
【背景技术】
传统的加工工艺要采用流延或吹膜设备、木皮处理设备、片材压贴设备及裁切设备等,经过制膜、木皮处理、片材压贴、成品裁切等多道工序,设备投入种类多,占地面积大,因加工工序繁琐,加工周期长,需投入的资源也会相应增加,成本较高,而且工序多,不但增加了加工过程的浪费,工序中产品不良风险增加,制程中的不良影响因素增加,进一步导致生产成本的增加。
【发明内容】
本发明的目的是克服现有压贴木皮加工工序繁琐,加工周期长的缺陷,提供一种利用淋膜、压延工艺压贴木皮的一体成型加工工艺,加工过程环保,品质易于控制,可批量工业化生产卷材或片材的木皮。
本发明技术方案如下:
一种利用淋膜、压延工艺压贴木皮一体成型的加工工艺,包括以下步骤:
a、拼皮:沿纵或横向无缝拼接木皮成片,确保木皮宽幅最大化,同时修饰木皮表面透底纹络,采取同木纹颜色填充,确保薄木皮整体外观统一实色无异常透底等现象;
b、挤出流延:将不同性能的塑胶原料中的一种或几种混合投入挤出机料斗中,通过加热、混炼、塑化、挤出,在淋膜机上挤出流延成膜,在淋膜机上挤出流延成膜,将薄膜调节至要求的厚度及偏差;
c、淋膜压贴:在调整好的流延膜上,将拼接好的木皮及耐高温基膜引入压延辊组进行多辊组压合;
d、冷却成型:压贴后的木皮经冷却、切边,通过收卷机收成卷材。
优选的,在步骤a中无缝拼接木皮前,先使用高透明聚氨酯弹性 UV树脂,对木皮进行填充并通过UV光源干燥,而后进行木皮镜面抛光,木皮厚度误差控制在0.01~0.05mm,使用全自动无缝拼接机,将多片木皮进行无缝拼接。
优选的,在步骤a中所使用木皮坯料的厚度在0.05~0.4mm。
优选的,在步骤b中所述橡胶原料包括塑胶原料包括聚氨酯、 EVA、POE、改性PE中的一种或几种混合挤出。
优选的,在步骤b中使用的塑料与木皮要有良好的粘结性,粘结后的产品剥离强度≧60N/cm,所述流延膜厚度为0.02~0.2mm。
优选的,在步骤c中木皮与流延的压贴,采用多辊组热压方式进行压合。
优选的,在步骤d中成型切边后的木皮,厚度0.06~0.1mm的可通过收卷成卷材,厚度﹥0.1mm的通过裁切成片材。
一种利用淋膜、压延工艺压贴木皮的一体成型加工工艺,其特征在于:在步骤a中UV光源干燥时,UV光源波长为 480~650nm,干燥时间30~70min。
优选的,所述高透明聚氨酯弹性UV树脂包含以下重量百分比组分:
Figure BDA0001765511260000031
优选的,所述催化剂为苄基三乙基氯化铵和二月桂酸二丁基锡的混合物,所述的阻聚剂为对羟基苯甲醚。
本发明相对于现有技术,有以下优点:
本发明公开了一种利用淋膜、压延工艺压贴木皮一体成型的加工工艺,采用薄木木皮木坯经过相互平铺、砂光、填充、实色处理组合后,通过压延与塑胶流延薄膜直接压合,然后通过表面接触冷却成型,成型中可采用单层挤出淋膜机或多层挤出淋膜机,利用塑胶原料挤出成膜,将不同性能胶膜与木皮有机的贴合在一起,压贴方式采用多组辊压方式进行,对卷材产品可实现无缝压贴,从而提高了产品的利用率,减少浪费,利用淋膜机或改进型淋膜机进行同步流延、压贴成型的加工工艺,可达到减少生产工序、筒化生产工艺流程的目的,加工工序单一,加工周期短,筒化了生产工艺流程,从而降低了加工过程的质量风险,降低了成本,节约了资源,并可批量工业化生产卷材或片材,采用卷材便于操作,工作效率高,工艺环保无毒,且隔热防火效果佳。
【附图说明】
图1:本发明加工工艺流程;
图2:本发明淋膜压贴步骤中多辊组热压方式示意。
【具体实施方式】
下面对本发明技术作具体说明:
结合具体实施例1~4说明本发明的具体技术方案:
实施例1:
一种利用淋膜、压延工艺压贴木皮一体成型的加工工艺,包括以下步骤:
a、拼皮:先使用高透明聚氨酯弹性UV树脂,对木皮坯料进行填充并通过UV光源干燥,木皮坯料厚度0.05mm,UV光源波长为480nm,干燥时间30min,而后进行木皮镜面抛光,木皮厚度误差控制在0.01~ 0.05mm,使用全自动无缝拼接机,将多片木皮进行无缝拼接,沿纵向无缝拼接木皮成卷材,同时修饰木皮表面透底纹络,采取同木纹颜色填充,确保薄木皮整体外观统一实色无异常透底等现象;
b、挤出流延:投入能与木皮粘结良好的塑胶原料,在单层挤出淋膜机上挤出流延成膜,流延膜厚度为0.01mm;
c、淋膜压贴:将卷材木皮装在第一放卷架上,将基膜装在第二放卷架上,在调节好的流延膜上,将木皮及胶膜引入压延辊组,进行多辊组热压方式压合;
d、冷却成型:压贴后的木皮经冷却、切边,通过收卷机收成卷材。
实施例2:
一种利用淋膜、压延工艺压贴木皮一体成型的加工工艺,包括以下步骤:
a、拼皮:先使用高透明聚氨酯弹性UV树脂,对木皮坯料进行填充并通过UV光源干燥,木皮坯料厚度0.15mm,UV光源波长为520nm,干燥时间45min,而后进行木皮镜面抛光,木皮厚度误差控制在0.01~ 0.05mm,使用全自动无缝拼接机,将多片木皮进行无缝拼接,沿纵向无缝拼接木皮成卷材,同时修饰木皮表面透底纹络,采取同木纹颜色填充,确保薄木皮整体外观统一实色无异常透底等现象;
b、挤出流延:投入能与木皮粘结良好的塑胶原料,分别投入相应的挤出机,熔融物料进行分配共挤,通过模具流延成膜,流延膜厚度为0.08mm;
c、淋膜压贴:将卷材木皮装在第一放卷架上,将基膜装在第二放卷架上,在调节好的流延膜上,将木皮及胶膜引入压延辊组,进行多辊组热压方式压合;
d、冷却成型:压贴后的木皮经冷却、切边,通过收卷机收成卷材。
实施例3:
一种利用淋膜、压延工艺压贴木皮一体成型的加工工艺,包括以下步骤:
a、拼皮:先使用高透明聚氨酯弹性UV树脂,对木皮坯料进行填充并通过UV光源干燥,木皮坯料厚度0.3mm,UV光源波长为600nm,干燥时间60min,而后进行木皮镜面抛光,木皮厚度误差控制在0.01~ 0.05mm,使用全自动无缝拼接机,将多片木皮进行无缝拼接,沿横向无缝拼接木皮成卷材,同时修饰木皮表面透底纹络,采取同木纹颜色填充,确保薄木皮整体外观统一实色无异常透底等现象;
b、挤出流延:投入能与木皮粘结良好的塑胶原料,在单层挤出淋膜机上挤出流延成膜,流延膜厚度为0.15mm;
c、淋膜压贴:将卷材木皮装在第一放卷架上,将基膜装在第二放卷架上,在调节好的流延膜上,将木皮及胶膜引入压延辊组,进行多辊组热压方式压合;
d、冷却成型:压贴后的木皮经冷却、切边,通过收卷机收成卷材。
实施例4:
一种利用淋膜、压延工艺压贴木皮一体成型的加工工艺,包括以下步骤:
a、拼皮:先使用高透明聚氨酯弹性UV树脂,对木皮坯料进行填充并通过UV光源干燥,木皮坯料厚度0.4mm,UV光源波长为650nm,干燥时间70min,而后进行木皮镜面抛光,木皮厚度误差控制在0.01~ 0.05mm,使用全自动无缝拼接机,将多片木皮进行无缝拼接,沿纵向无缝拼接木皮成卷材,同时修饰木皮表面透底纹络,采取同木纹颜色填充,确保薄木皮整体外观统一实色无异常透底等现象;
b、挤出流延:投入能与木皮粘结良好的塑胶原料,分别投入相应的挤出机,熔融物料进行分配共挤,通过模具流延成膜,流延膜厚度为0.2mm;
c、淋膜压贴:将卷材木皮装在第一放卷架上,将基膜装在第二放卷架上,在调节好的流延膜上,将木皮及胶膜引入压延辊组,进行多辊组热压方式压合;
d、冷却成型:压贴后的木皮经冷却、切边,通过收卷机收成卷材。表1:实施例1~4中所用橡胶原料组成:
橡胶原料 实施例1 实施例2 实施例3 实施例4
丁苯橡胶 V V
顺丁橡胶 V V
异戊橡胶 V
乙丙橡胶 V
氯丁橡胶 V V
表2:实施例1~4中所用高透明聚氨酯弹性UV树脂组成
Figure BDA0001765511260000071
Figure BDA0001765511260000081
表3:实施例1~4中木皮复合产品测试数据
项目 实施例1 实施例2 实施例3 实施例4
粘结强度(N/cm) 95 115 100 90
外观(气泡、脱层)
断裂伸长率(%) 600 900 800 500
表面耐磨度(g/c㎡) 0.032 0.03 0.034 0.033
宽幅(mm) 任意 任意 任意 任意
冷热循环(2循环) 无开裂 无开裂 无开裂 无开裂
本发明采用薄木木皮木坯经过相互平铺、砂光、填充、实色处理组合后,通过压延与塑胶流延薄膜直接压合,然后通过表面接触冷却成型,成型中可采用单层挤出淋膜机或多层挤出淋膜机,利用塑胶原料挤出成膜,将不同性能胶膜与木皮有机的贴合在一起,压贴方式采用多组辊压方式进行,对卷材产品可实现无缝压贴,从而提高了产品的利用率,减少浪费,利用淋膜机或改进型淋膜机进行同步流延、压贴成型的加工工艺,可达到减少生产工序、筒化生产工艺流程的目的,加工工序单一,加工周期短,筒化了生产工艺流程,从而降低了加工过程的质量风险,降低了成本,节约了资源,并可批量工业化生产卷材或片材。

Claims (6)

1.一种利用淋膜、压延工艺压贴木皮的一体成型加工工艺,其特征在于,包括以下步骤:
a、拼皮:沿纵或横向无缝拼接木皮,同时修饰木皮表面透底纹络,采取同木纹颜色填充;无缝拼接木皮前,先使用高透明聚氨酯弹性UV固化树脂,对木皮进行填充并通过UV光源干燥,而后进行木皮镜面抛光,木皮厚度误差控制在0.01~0.05mm,木皮坯料的厚度在0.05~0.4mm,使用全自动无缝拼接机,将多片木皮进行无缝拼接;
b、挤出流延:将一种或多种塑胶原料混合投入挤出机料斗中,通过加热、混炼、塑化、挤出,在淋膜机上挤出流延成膜,将薄膜调节至要求的厚度及偏差;
c、淋膜压贴:在调整好的流延膜上,将拼接好的木皮及基膜引入压延辊组进行多辊组压合;
d、冷却成型:压贴后的木皮经冷却、切边成型;
所述高透明聚氨酯弹性UV树脂包含以下重量百分比组分:
丙烯酸羟乙酯 23.0~27.5%
甲基六氢苯酐 30.0~35.0%
环氧氯丙烷 25.0~29.5%
六亚甲基二异氰酸酯 13.0~15.0%
催化剂 0.1~0.2%
阻聚剂 0.1~0.2% ;
所述催化剂为苄基三乙基氯化铵和二月桂酸二丁基锡的混合物,所述的阻聚剂为对羟基苯甲醚。
2.根据权利要求1所述的一种利用淋膜、压延工艺压贴木皮的一体成型加工工艺,其特征在于:在步骤b中使用的塑胶原料与木皮具有良好的粘结性,粘结后的产品剥离强度≧60N/cm,所述流延膜厚度为0.02~0.2mm。
3.根据权利要求1所述的一种利用淋膜、压延工艺压贴木皮的一体成型加工工艺,其特征在于:所述塑胶原料包括聚氨酯、EVA、POE、改性PE中的一种或多种。
4.根据权利要求1所述的一种利用淋膜、压延工艺压贴木皮的一体成型加工工艺,其特征在于:在步骤c中采用多辊组热压方式进行压合。
5.根据权利要求1所述的一种利用淋膜、压延工艺压贴木皮的一体成型加工工艺,其特征在于:步骤d中还包括对冷却、切边后的厚度在0.06-0.1mm的木皮收卷成卷材,厚度﹥0.1mm的裁切成片材的步骤。
6.根据权利要求1所述的一种利用淋膜、压延工艺压贴木皮的一体成型加工工艺,其特征在于:在步骤a中UV光源干燥时,UV光源波长为480~650nm,干燥时间30~70min。
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