CN107354760B - 耐低温挠曲打孔透气聚氯乙烯人造革及其制备方法 - Google Patents

耐低温挠曲打孔透气聚氯乙烯人造革及其制备方法 Download PDF

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CN107354760B
CN107354760B CN201710373375.6A CN201710373375A CN107354760B CN 107354760 B CN107354760 B CN 107354760B CN 201710373375 A CN201710373375 A CN 201710373375A CN 107354760 B CN107354760 B CN 107354760B
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蔡东旦
陈红梅
滕大勇
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Benecke Changshun Auto Trim Zhangjiagang Co Ltd
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Abstract

本发明公开了一种耐低温挠曲打孔透气聚氯乙烯人造革及其制备方法，本发明的人造革包括基布层、PVC发泡层、PVC致密层和油漆层，采用本发明的配方和方法制备的耐低温挠曲打孔透气聚氯乙烯人造革具有良好的机械强度和韧性强、耐磨、低温耐挠曲性较强的特点，兼备类似真皮的透气性、舒适度，手感较好，而且安全性高。

Description

耐低温挠曲打孔透气聚氯乙烯人造革及其制备方法
技术领域
本发明涉及人造革的技术领域，具体地是一种耐低温挠曲打孔透气聚氯乙烯人造革及其制备方法。
背景技术
目前以人造革材料应用广泛，消费者对产品质量追求的热情也逐渐提高，但是目前人造革普遍存在以下问题：尽管真皮材料具有良好的透气性和手感，但是真皮存在如下明显缺陷：价格昂贵，资源有限，此外真皮的低温耐挠曲性差、耐磨性差、表面极易损坏，一旦遇上刀、剪、针等尖锐物品，真皮上就会留下印痕；其次，常规聚氯乙烯内饰材料尽管具有良好的耐清洁，耐磨等性能，但是其透气舒适度又不足，而普通聚氯乙烯配方制备的打孔透气性材料，由于其较差的乃挠曲性能存在长期耐刮擦和实用性差的明显缺点；再者，在人造革表面处理过程中常使用属于生殖毒性的物质——N-甲基吡咯烷酮和N-乙基吡咯烷酮，危害人体健康。因此，迫切需要机械性能好、类似真皮的透气性和舒适度、低温耐挠曲性强的人造革。
同时，在人造革的生产加工过程中，常用压延法制备，但是现有技术中压延处理过程中温度过高，容易造成材料本身物理或化学的不利变化，甚至引发火灾。但是温度过低又达不到产品质量需求，因此压延过程对温度的控制较为严格和苛刻，生产成本较高和效率较低，不利于工业化生产。
发明内容
针对以上问题，本发明的目的之一是提供一种耐低温挠曲打孔透气聚氯乙烯人造革，本发明的人造革类似真皮的透气性，舒适度，手感较好，本发明的配方赋予人造革优异的低温耐挠曲性。
本发明所采取的技术方案是：提供一种耐低温挠曲打孔透气聚氯乙烯人造革，其包括基布层、PVC发泡层、PVC致密层和油漆层，其中，所述PVC发泡层由以下质量份的原料组成：聚氯乙烯树脂60-80份、耐低温增塑剂40-50份、发泡剂0.5-3份；所述PVC致密层材料由以下质量份的原料组成：聚氯乙烯树脂40-80份、耐低温增塑剂35-50份、发泡剂0.5-3份、稳定剂1-3份、聚乙烯蜡1-3份；所述油漆层由以下质量份的材料组成：聚氯乙烯树脂20-50份、耐低温增塑剂25-45份、聚双酚酸苯基磷酸酯1-2份、手感剂1-3份。
作为优选，所述发泡剂由以下质量份的原料组成：十二烷基磺酸钠1-2.5份、钛酸酯1-2.5份、环氧树脂纳米复合材料100份，钛酸酯优选单烷氧基磷酸酯钛酸酯偶联剂Tl-411-A，因为阴离子型表面活性剂和两性表面活性剂之间的复配会产生显著的增效作用，本发明选用十二烷基磺酸钠与钛酸酯的复配型发泡剂，一方面提高表面活性剂的性能、进一步增强泡沫的稳定性，无需在PVC发泡层的配方中另加发泡稳定剂，另一方面因为钛酸酯偶联剂Tl-411-A钛酸酯本身含有磺酸基和磷酸酯基等多种活性基团赋予发泡层体系一定的粘结性。环氧树脂纳米复合材料本身的耐磨强度和韧性强、耐低温力学性能强、粘结性能强，与具有表面活性较强的十二烷基磺酸钠与钛酸酯的复配型发泡剂起到协同作用，进一步增强PVC发泡层和PVC致密层的机械稳定性和耐低温力学性能，而且因为PVC发泡层和PVC致密层中均含有本发明特殊配方的复配型发泡剂，确保PVC发泡层和PVC致密层的层与层之间的粘结性，使得人造革的机械性能更强。
作为优选，所述手感剂由以下质量份的原料组成：石蜡10份、脂肪酸5份、微晶蜡2份、失水山梨醇单油酸酯聚氧乙烯醚1.8份、聚丙烯酸钠1份、乳化硅油0.4份，油漆层更加温暖柔软的丝绸手感，更接近于真皮之手感效果。
采用以上原料配方后，本发明的耐低温挠曲打孔透气聚氯乙烯人造革与现有技术相比具有以下优点：
(1)本发明中添加了耐低温增塑剂部分代替聚氯乙烯树脂，既保留了人造革本身具有的产品特性，而且在人造革PVC发泡层和PVC致密层的浆料中本身具备了增塑剂兼稳定剂的性能，使本发明配方的人造革具备了较佳的耐低温效果；同时，聚双酚酸苯基磷酸酯中因为芳基磷酸酯的存在，可以改变PVC的表面张力，与耐低温增塑剂对PVC的溶解性起到了协同增效的作用；以耐低温增塑剂和聚氯乙烯树脂为原材料配合组成的人造革成品比单一使用聚氯树脂为原材料合成的树脂的机械性能更强，耐低温增塑剂本身具有的挥发性低、无毒性、迁移性小、优良的热稳定性和光稳定性、耐水性和耐油性，赋予了本发明人造革制品良好的机械强度、韧性；
(2)本发明油漆层的稳定性更强、更环保。油漆配方中不含有行业内常用的N-甲基吡咯烷酮和N-乙基吡咯烷酮强极性溶剂(N-甲基吡咯烷酮和N-乙基吡咯烷酮都已经被欧盟法规列为属于生殖毒性的物质)，而是采用了与聚氯乙烯树脂相容性较好的耐低温增塑剂；聚双酚酸苯基磷酸酯中因为芳基磷酸酯的存在，可以改变PVC的表面张力，与耐低温增塑剂对PVC的溶解性起到了协同增效的作用；再者，聚双酚酸苯基磷酸酯是以生物质资源双酚酸为原料制备的原材料，使最终人造革产品更安全、更环保；
(3)水漆层的组成成分呈现弱负电荷性，而PVC发泡层呈现多种基团和电荷性质，尤其是钛酸酯偶联剂中所含有的磺酸基和磷酸酯基以及等多种活性基团，使得两层之间相互作用，粘结性更强，满足了产品不掉浆、不裂浆、粘层牢固、耐磨的质量要求；
(4)环氧树脂纳米复合材料本身的耐磨强度和韧性强、耐低温力学性能强、粘结性能强，与具有表面活性较强的十二烷基磺酸钠与钛酸酯的复配型发泡剂起到协同作用，进一步增强PVC发泡层和PVC致密层的机械稳定性和耐低温力学性能，而且因为PVC发泡层和PVC致密层中均含有本发明特殊配方的复配型发泡剂，确保PVC发泡层和PVC致密层的层与层之间的粘结性，使得人造革的机械性能更强；
(5)本发明的原料配方使PVC发泡层和PVC致密层两层之间得粘结性更强，而且同时解决了单独使用PVC发泡层人造革机械性能差、单独使用PVC致密层柔性和透气性差的缺陷；
(6)本发明人造革可广泛运用于汽车内饰件等。
本发明的另一目的是提供耐低温挠曲打孔透气聚氯乙烯人造革的制备方法，该方法包括以下步骤：混浆；PVC发泡层的涂布、塑炼压延；PVC致密层的涂布、塑炼压延；印刷压花；打孔切割。
①PVC发泡层的制备：在混合桶中加入聚氯乙烯树脂和耐低温增塑剂，混匀，加入发泡剂，搅拌40-60min混匀，放浆，得到PVC发泡层浆料，转移至双辊挤出机的料斗，优选所述PVC发泡层浆料的黏度为4000-15000cps；
②PVC致密层的制备：在混合桶中加入聚氯乙烯树脂和耐低温增塑剂，混匀，再加入发泡剂、稳定剂和聚乙烯蜡，搅拌60-80min混匀，抽真空，真空度0.08-0.1MPa保持8-10min，开启制冷机制冷，调节冷却温度至10-15℃，搅拌5-8min，得到PVC致密层浆料，转移至双辊挤出机的料斗，优选所述PVC致密层浆料的黏度为10000-17000cps。
作为优选，在基布层上依次涂覆PVC发泡层和PVC致密层，所述PVC发泡层的涂布和PVC致密层的涂布过程涂覆量均为250-300g/m2、涂布车速均为30-40m/min，优选基布类型为粗孔型基布，最低限度降低后期打孔对基布的损伤，耐低温挠曲性能更强。
所述PVC发泡层的混炼压延条件为：在双辊混炼挤出机进行，温度130-140℃，真空度0.13-0.2MPa，压延时间3-5min；温度140-150℃，真空度0.13-0.2MPa，压延时间3-6min；温度150-170℃，真空度0.13-0.2MPa，压延时间2-6min，结束后，冷却至10-15℃；所述PVC致密层的混炼压延条件为：在温度10-15℃的条件下，双辊挤出机混炼压延15-20min，开启双辊压光机，双辊间隙为3-5mm。
所述印刷压花具体是指：①充分搅拌混匀油漆层原料；②涂饰厚度10-15μm的油漆，100-120℃固化烘干；③涂饰厚度10-20μm的油漆，90-100℃固化烘干；④涂饰厚度10-15μm的油漆，80-100℃固化烘干，形成所述油漆层；⑤加热至160-170℃，真空度0.13-0.2MPa的条件下压花。
作为优选，所述打孔的孔径为1-1.2mm，孔距10-12mm，透气效果优异，且外观简约美观。
利用本发明的耐低温挠曲打孔透气聚氯乙烯人造革的制备方法与现有技术相比具有以下优点：
(1)通过分段压延，使PVC发泡层与基布层充分地粘结牢固，而且三步温度和时间过程为发泡层影响产品质量的气体的释放提供了充分地条件，确保最终产品的表面平成和人造革厚度的稳定、减小误差，也进一步防止了皮革发泡材料表面的溶胀；
(2)通过多次表面处理过程，使发泡层与表面水漆材料之间形成更为稳定地共价键，粘结力更强，层与层之间粘结更牢固；
(3)本发明的耐低温挠曲打孔透气聚氯乙烯人造革的制备方法简单，结合材料本身特点，操作温度比现有技术的温度要求低，避免了因温度过高引发火灾等问题，也更节约能源，生产成本更低。
附图说明
为了更清楚地说明本发明实施例技术中的技术方案，下面将对实施例技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明的耐低温挠曲打孔透气聚氯乙烯人造革的结构放大示意图；
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部实施例，基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
下面结合附图和具体实施方式对本发明作进一步说明。
如图1为本发明耐低温挠曲打孔透气聚氯乙烯人造革的结构放大示意图，本发明人造革具有四层机构，依次为基布层、PVC发泡层、PVC致密层和油漆层。
实施例1
手感剂由以下成分组成：石蜡10g、脂肪酸5g、微晶蜡2g、失水山梨醇单油酸酯聚氧乙烯醚1.8g、聚丙烯酸钠1g、乳化硅油0.4g。
按照表1称量实施例1重量份的发泡剂组份原料，充分混匀。
按照表2称量实施例1重量份的PVC发泡层原料，在混合桶中首先加入聚氯乙烯树脂和耐低温增塑剂，混匀，加入发泡剂，搅拌50min混匀，放浆，得到PVC发泡层浆料，转移至双辊挤出机的料斗，PVC发泡层浆料的黏度为7000cps涂布于复合棉质基布上，涂布的涂覆量为15g/m2、涂布车速40m/min，在双辊混炼挤出机混炼压延，依次进行温度140℃，真空度0.15MPa，压延时间5min；温度150℃，真空度0.2MPa，压延时间5min；温度170℃，真空度0.13MPa，压延时间3min，结束后，冷却至10℃；；按照表3称量实施例1重量份的PVC致密层原料，在混合桶中加入聚氯乙烯树脂和耐低温增塑剂，混匀，再加入发泡剂、稳定剂和聚乙烯蜡，搅拌80min混匀，抽真空，真空度0.08MPa保持10min，开启制冷机制冷，冷却温度12℃，搅拌7min，得到PVC致密层浆料，转移至双辊挤出机的料斗，PVC致密层浆料的黏度为15000cps，采用骤冷降温法处理，在双辊混炼挤出机进行，在温度12℃的条件下，双辊挤出机混炼压延20min，开启双辊压光机，双辊间隙为3mm。
按照下表4中实施例1的重量份称取油漆层原料，并充分混合均匀，形成油漆层原浆料，涂饰厚度12μm的油漆，115℃固化烘干；③涂饰厚度20μm的油漆，100℃固化烘干；④涂饰厚度10μm的油漆，90℃固化烘干，形成所述油漆层；⑤加热至170℃，真空度0.2MPa的条件下压花。
人造革的表皮打孔，要求孔径为1.2mm，孔距10mm，按照客户要求完成成品切割。
实施例2
手感剂同实施例1，按照表1称量实施例2重量份的发泡剂组份原料，充分混匀。
按照表2称量实施例2重量份的PVC发泡层原料，在混合桶中首先加入聚氯乙烯树脂和耐低温增塑剂，混匀，加入发泡剂，搅拌40min混匀，放浆，得到PVC发泡层浆料，转移至双辊挤出机的料斗，PVC发泡层浆料的黏度为15000cps涂布于复合棉质基布上，涂布的涂覆量为12g/m2、涂布车速30m/min，在双辊混炼挤出机混炼压延，依次进行温度140℃，真空度0.13MPa，压延时间3min；温度140℃，真空度0.15MPa，压延时间6min；温度160℃，真空度0.15MPa，压延时间5min，结束后，冷却至13℃；；按照表3称量实施例2重量份的PVC致密层原料，在混合桶中加入聚氯乙烯树脂和耐低温增塑剂，混匀，再加入发泡剂、稳定剂和聚乙烯蜡，搅拌60min混匀，抽真空，真空度0.1MPa保持10min，开启制冷机制冷，冷却温度15℃，搅拌8min，得到PVC致密层浆料，转移至双辊挤出机的料斗，PVC致密层浆料的黏度为10000cps，采用骤冷降温法处理，在双辊混炼挤出机进行，在温度10℃的条件下，双辊挤出机混炼压延20min，开启双辊压光机，双辊间隙为5mm。
按照下表4中实施例2的重量份称取油漆层原料，并充分混合均匀，形成油漆层原浆料，涂饰厚度10μm的油漆，100℃固化烘干；③涂饰厚度10μm的油漆，90℃固化烘干；④涂饰厚度10μm的油漆，80℃固化烘干，形成所述油漆层；⑤加热至160℃，真空度0.15MPa的条件下压花。
人造革的表皮打孔，要求孔径为1mm，孔距12mm，按照客户要求完成成品切割。
实施例3
手感剂同实施例1，按照表1称量实施例3重量份的发泡剂组份原料，充分混匀。
按照表2称量实施例3重量份的PVC发泡层原料，在混合桶中首先加入聚氯乙烯树脂和耐低温增塑剂，混匀，加入发泡剂，搅拌40min混匀，放浆，得到PVC发泡层浆料，转移至双辊挤出机的料斗，PVC发泡层浆料的黏度为4000cps涂布于复合棉质基布上，涂布的涂覆量为20g/m2、涂布车速30m/min，在双辊混炼挤出机混炼压延，依次进行温度130℃，真空度0.2MPa，压延时间3min；温度145℃，真空度0.13MPa，压延时间6min；温度160℃，真空度0.2MPa，压延时间6min，结束后，冷却至15℃；；按照表3称量实施例3重量份的PVC致密层原料，在混合桶中加入聚氯乙烯树脂和耐低温增塑剂，混匀，再加入发泡剂、稳定剂和聚乙烯蜡，搅拌80min混匀，抽真空，真空度0.08MPa保持10min，开启制冷机制冷，冷却温度15℃，搅拌8min，得到PVC致密层浆料，转移至双辊挤出机的料斗，PVC致密层浆料的黏度为17000cps，采用骤冷降温法处理，在双辊混炼挤出机进行，在温度15℃的条件下，双辊挤出机混炼压延18min，开启双辊压光机，双辊间隙为5mm。
按照下表4中实施例3的重量份称取油漆层原料，并充分混合均匀，形成油漆层原浆料，涂饰厚度15μm的油漆，120℃固化烘干；③涂饰厚度10μm的油漆，95℃固化烘干；④涂饰厚度15μm的油漆，80℃固化烘干，形成所述油漆层；⑤加热至170℃，真空度0.15MPa的条件下压花。
人造革的表皮打孔，要求孔径为1.2mm，孔距12mm，按照客户要求完成成品切割。
实施例4
分别按照变1、表2、表3、表4称量实施例4重量份的PVC发泡剂原料、PVC发泡层原料、PVC致密层原料、油漆层原料，其他同实施例1。
对比例1
分别按照变1、表2、表3、表4称量对比例1重量份的PVC发泡剂原料、PVC发泡层原料、PVC致密层原料、油漆层原料，其他同实施例1。
对比例2
分别按照变1、表2、表3、表4称量对比例2重量份的PVC发泡剂原料、PVC发泡层原料、PVC致密层原料、油漆层原料，其他同实施例1。
对比例3
分别按照变1、表2、表3、表4称量对比例3重量份的PVC发泡剂原料、PVC发泡层原料、PVC致密层原料、油漆层原料，其他同实施例1。
表1各实施例中发泡剂组份含量
十二烷基磺酸钠/g 钛酸酯/kg 环氧树脂纳米复合材料/kg
实施例1 1.00 2.5 80
实施例2 1.50 1.0 85
实施例3 2.50 1.5 100
实施例4 2.00 1.5 100
对比例1 0 2.3 90
对比例2 1.50 0 85
对比例3 2.15 1.6 乙醇
表2各实施例中PVC发泡层组份含量(单位：kg)
Figure BDA0001303370440000081
Figure BDA0001303370440000091
表3各实施例中PVC致密层组份含量(单位：kg)
Figure BDA0001303370440000092
表4各实施例中油漆层组份含量(单位：kg)
聚氯乙烯树脂 耐低温增塑剂 聚双酚酸苯基磷酸酯 手感剂
实施例1 20 25 1.0 1.0
实施例2 27 28 1.2 1.8
实施例3 40 32 1.5 3.0
实施例4 50 45 2.0 1.5
对比例1 45 33 1.7 2.5
对比例2 35 0 1.2 2.0
对比例3 18 30 1.6 0
结果验证实验
按照ASTM D1415方法测定所制备的人造革硬度，按照GB/T 4689.4-1984测定人造革的物理性能，采用GB 2917.1-2002标准刚果红法测定人造革的热稳定性能；按照GB/T17928-1999标准测定人造革的撕裂强度，上述结果见表5。按照GB 21550-2008标准测定人造革中有害物质限量，尤其是挥发性物质的含量小于4.17g/m3、氯乙烯单体含量小于1mg/kg，均明显低于国家标准，结果表明实施例1-4中制备的人造革是一种环境友好型人造革。
表5验证试验结果表
邵氏硬度/HA 热稳定性/min 撕裂强度/N 屈服强度/Mpa
实施例1 65 10 40 41.2
实施例2 72 13 51 38.9
实施例3 76 13 53 36.0
实施例4 83 15 64 44.7
对比例1 58 7 27 12.4
对比例2 52 8 32 14.3
对比例3 61 13 46 34.2
明显看出，实施例1-4中的力学机械性、热稳定性等参数整体效果是优于对比例1-3的，尤其是屈服强度和撕裂强度，也可以充分说明本发明配方制备出的人造革机械性能更为稳定；尽管对比例3中的整体效果与本实施例中的效果较为接近，但是因为并没有使用手感剂，考虑到实际生产中消费者对最终产品质感的需求，增加了手感剂的配方，而且通过实验室检测，选用本发明配方的手感剂使人造革附着力更强、并赋予产品耐湿擦以及温暖柔软的丝绸质感。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (8)

1.一种耐低温挠曲打孔透气聚氯乙烯人造革，其特征在于：包括基布层、PVC发泡层、PVC致密层和油漆层，其中，所述PVC发泡层由以下质量份的原料组成：聚氯乙烯树脂60-80份、耐低温增塑剂40-50份、发泡剂0.5-3份；所述PVC致密层材料由以下质量份的原料组成：聚氯乙烯树脂40-80份、耐低温增塑剂35-50份、发泡剂0.5-3份、稳定剂1-3份、聚乙烯蜡1-3份；所述油漆层由以下质量份的材料组成：聚氯乙烯树脂20-50份、耐低温增塑剂25-45份、聚双酚酸苯基磷酸酯1-2份、手感剂1-3份；
所述发泡剂由以下质量份的原料组成：十二烷基磺酸钠1-2.5份、钛酸酯1-2.5份、环氧树脂纳米复合材料80-100份。
2.根据权利要求1所述的耐低温挠曲打孔透气聚氯乙烯人造革，其特征在于：所述手感剂由以下质量份的原料组成：石蜡10份、脂肪酸5份、微晶蜡2份、失水山梨醇单油酸酯聚氧乙烯醚1.8份、聚丙烯酸钠1份、乳化硅油0.4份。
3.根据权利要求1或2所述的耐低温挠曲打孔透气聚氯乙烯人造革的制备方法，其特征在于：该方法依次包括以下步骤：混浆；PVC发泡层的涂布、混炼压延；PVC致密层的涂布、混炼压延；印刷压花；打孔切割。
4.根据权利要求3所述的耐低温挠曲打孔透气聚氯乙烯人造革的制备方法，其特征在于：所述混浆具体包括以下步骤：
①PVC发泡层的制备：在混合桶中加入聚氯乙烯树脂和耐低温增塑剂，混匀，加入发泡剂，搅拌40-60min混匀，放浆，得到PVC发泡层浆料，转移至双辊挤出机的料斗，其中，所述PVC发泡层浆料的黏度为4000-15000cps；
②PVC致密层的制备：在混合桶中加入聚氯乙烯树脂和耐低温增塑剂，混匀，再加入发泡剂、稳定剂和聚乙烯蜡，搅拌60-80min混匀，抽真空，真空度0.08-0.1MPa保持8-10min，开启制冷机制冷，调节冷却温度至10-15℃，搅拌5-8min，得到PVC致密层浆料，转移至双辊挤出机的料斗，其中，所述PVC致密层浆料的黏度为10000-17000cps。
5.根据权利要求4所述的耐低温挠曲打孔透气聚氯乙烯人造革的制备方法，其特征在于：在基布层上依次涂覆PVC发泡层和PVC致密层，所述PVC发泡层的涂布和PVC致密层的涂布过程涂覆量均为250-300g/m2、涂布车速均为30-40m/min。
6.根据权利要求4所述的耐低温挠曲打孔透气聚氯乙烯人造革的制备方法，其特征在于：所述PVC发泡层的混炼压延条件为：在双辊混炼挤出机进行，温度130-140℃，真空度0.13-0.2MPa，压延时间3-5min；温度140-150℃，真空度0.13-0.2MPa，压延时间3-6min；温度150-170℃，真空度0.13-0.2MPa，压延时间2-6min，结束后，冷却至10-15℃；所述PVC致密层的混炼压延条件为：在双辊混炼挤出机进行，在温度10-15℃的条件下，双辊挤出机混炼压延15-20min，开启双辊压光机，双辊间隙为3-5mm。
7.根据权利要求4所述的耐低温挠曲打孔透气聚氯乙烯人造革的制备方法，其特征在于：所述印刷压花具体是指：①充分搅拌混匀油漆层原料；②涂饰厚度10-15μm的油漆，100-120℃固化烘干；③涂饰厚度10-20μm的油漆，90-100℃固化烘干；④涂饰厚度10-15μm的油漆，80-100℃固化烘干，形成所述油漆层；⑤加热至160-170℃，真空度0.13-0.2MPa的条件下压花。
8.根据权利要求4所述的耐低温挠曲打孔透气聚氯乙烯人造革的制备方法，其特征在于：所述打孔的孔径为1-1.2mm，孔距10-12mm。
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