CN106183264B - 一种绒面压花聚乳酸熔纺壁纸生产工艺 - Google Patents
一种绒面压花聚乳酸熔纺壁纸生产工艺 Download PDFInfo
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Abstract
本发明公开了一种绒面压花聚乳酸熔纺壁纸生产工艺,具体为:聚乳酸切片经过干燥塔干燥处理后,通过干燥塔的干切片料管进入纺丝螺杆挤出机,干燥后的聚乳酸切片进入纺丝螺杆挤出机的螺杆进料段后,通过纺丝螺杆挤出机的螺杆计量段进入纺丝箱体的熔体管道中,经过滤后通过纺丝箱体下方的喷丝板挤出成纤;喷丝板挤出成纤的若干绒面无纺布落在拉伸罗拉外侧底层初生无纺布上;经压花罗拉与挤压罗拉的挤压,绒面无纺布与拉伸后的底层初生无纺布压合在一起,复合后形成绒面聚乳酸墙纸无纺布。本发明采用聚乳酸为原料,聚乳酸无纺布可有效改善涂层的透气性,涂层的力学性能得到改善,更为耐用,有杀菌功效,可有效的改善室内环境。
Description
技术领域
本发明涉及墙纸技术领域,尤其涉及到一种绒面压花聚乳酸熔纺壁纸生产工艺。
背景技术
墙纸又名壁纸,因其具有色彩多样,图案丰富,豪华气派、安全环保、施工方便、价格适宜等优势在家装中应用越来越广泛,常见墙纸大多是以纯纸、无纺布等材料作为基材,在其表面涂覆树脂浆料,经高温塑化、印制压花等工序制成。
采用表面涂覆树脂浆料的工艺存在透气性差的缺点,且含有有机类溶剂,长时间使用会污染室内空气。
聚乳酸(H-[OCHCH3CO]n-OH)的热稳定性好,加工温度170~230℃,有好的抗溶剂性,可用多种方式进行加工,如挤压、纺丝、双轴拉伸,注射吹塑。由聚乳酸制成的产品除能生物降解外,生物相容性、光泽度、透明性、手感和耐热性好,聚乳酸(PLA)还具有一定的耐菌性、阻燃性和抗紫外性,因此用途十分广泛,可用作包装材料、纤维和非织造物等。
专利申请号为201510826807.5,专利名称为一种含凹凸棒土-聚乳酸多孔纤维改性丙烯酸树脂液涂层的墙纸,该墙纸是由无纺布基材和涂覆于基材表面的涂层浆料经过干燥、塑化、压花后制成,其特征在于,所述的涂层浆料由以下重量份的原料制成:复合水性丙烯酸树脂乳液80-100、聚乳酸切片8-10、凹凸棒土3-4、硬脂酸0.1-0.2、钛酸四丁酯0.1-0.2、羟乙基纤维素1-2、乙烯基双硬脂酸酰胺0.1-0.2、硅烷偶联剂kh550 0.1-0.2。此墙纸的涂层浆料还是有化学成分,其树脂浆料存在透气性差的缺点,且含有有机类溶剂,长时间使用会污染室内空气。
专利申请号为201510833931.4,专利名称为一种含改性丙烯酸树脂乳液涂层的隔音保温型墙纸,该墙纸是由无纺布基材和涂覆于基材表面的涂层浆料经过干燥、塑化、压花后制成,其特征在于,所述的涂层浆料由以下重量份的原料制成:复合水性丙烯酸树脂乳液80-100、聚乳酸切片8-10、粒度为10-20μm的空心玻璃微珠3-4、固含量为30-35%的水性聚乙烯蜡乳液3-5、乙烯基双硬脂酸酰胺0.1-0.2、硅烷偶联剂kh550 0.1-0.2。此墙纸的涂层浆料还是有化学成分,其树脂浆料存在透气性差的缺点,且含有有机类溶剂,长时间使用会污染室内空气。
发明内容
本发明的目的在于克服上述现有技术中的不足之处而提供一种绒面压花聚乳酸熔纺壁纸生产工艺。
本发明是通过如下方式实现的:
一种绒面压花聚乳酸熔纺壁纸生产工艺,其特征在于:包括聚乳酸低面无纺布成形工艺、绒面无纺布复合成形工艺,
所述聚乳酸低面无纺布成形工艺为:聚乳酸切片经过无纺布切片干燥塔1干燥处理后,聚乳酸切片中的含水量降低至30PPm以下后,通过无纺布切片干燥塔1的干切片料管进入无纺布纺丝螺杆挤出机2,干燥后的聚乳酸切片进入无纺布纺丝螺杆挤出机2的螺杆进料段后,在套筒传导热的作用下聚乳酸切片开始吸热、软化,当聚乳酸切片进入无纺布纺丝螺杆挤出机2的螺杆压缩段后,聚乳酸切片在套筒传到热以及半熔融切片的高压作用、切片熔融、压缩,熔体密实度为1.28G/mL,熔化后的熔体通过无纺布纺丝螺杆挤出机2的螺杆计量段进入无纺布纺丝挤出箱体3的熔体管道中,在无纺布纺丝挤出箱体3的联苯或者导热油热载体的工艺温度下,熔体得以进一步的平衡塑化,塑化后的熔体经过计量泵计量、增压、并经过滤后,通过无纺布纺丝挤出箱体3下方的喷丝板挤出成纤;喷丝板挤出成纤的数千根纤维在高速冷却气流6的作用下通过纺丝甬道4平落在无纺布传送带10上,落到无纺布传送带10上的若干丝条经喂入平层压辊7压平并相互粘合形成初生无纺布,粘结在无纺布传送带10上的初生无纺布顺无纺布传送带10进通过平层剥离压辊11,将无纺布传送带10表层成形的初生无纺布与无纺布传送带10剥离,成形后的初生无纺布通过拉伸罗拉12,并在拉伸罗拉12的高速拉伸下变薄,使其伸长率降低至50%以下,布料厚度达到0.3-0.5mm;
所述绒面无纺布复合成形工艺为:聚乳酸切片经过干燥塔21干燥处理后,聚乳酸切片中的含水量降低至30PPm以下后,通过干燥塔21的干切片料管进入纺丝螺杆挤出机22,干燥后的聚乳酸切片进入纺丝螺杆挤出机22的螺杆进料段后,在套筒传导热的作用下聚乳酸切片开始吸热,当聚乳酸切片进入压缩段后,聚乳酸切片在套筒传到高温及高压作用下开始熔融、压缩,熔体密实度为1.28G/mL,最后熔化后的熔浆通过纺丝螺杆挤出机22的螺杆计量段进入纺丝箱体23的熔体管道中,在纺丝箱体23的联苯或者导热油热载体的工艺温度下,熔体温度得以进一步的平衡塑化,塑化后的熔体经过计量泵计量、增压、并经过滤后通过纺丝箱体23下方的喷丝板挤出成纤,喷丝板挤出成纤的数千条纤维在100-150℃、0.5马赫的第二高速冷却气流26的作用下通过第二纺丝甬道24拉成单丝线密度1dtex以下的类似短纤维的棉絮丝条,落在拉伸罗拉12外侧底层初生无纺布上;经压花罗拉14与挤压罗拉13的挤压,绒面无纺布与拉伸后的底层初生无纺布压合在一起,同时绒面无纺布上压出凸凹有序的花纹,复合后形成绒面聚乳酸墙纸无纺布,绒面聚乳酸墙纸无纺布经冷却辊15、张力辊组16拉平定型,通过输出罗拉17、切边分条18卷绕到卷绕机19的芯轴上,再经后道工序定长包装,制成聚乳酸绒面墙纸。
所述高速冷却气流6是由制冷机降温后的冷气由高速风机增压后送至静压室5并经过风排向甬道下侧吹射形成的,以达到丝条冷却及喷丝头拉伸的作用。
所述无纺布传送带10由四个固定转轮8支撑,并通过横向移动的张紧轮9将无纺布传送带10拉紧,无纺布传送带10的动力是由固定转轮8上的同步电机驱动。
所述第二高速冷却气流26是由高速风机增压加温后送至第二静压室25并经过风排向甬道下侧吹射形成的,以达到丝条快速拉成超细绒毛的作用。
本发明的有益效果在于:采用聚乳酸无纺布作为墙纸基材,压花层也采用聚乳酸布层,使得形成的釉面墙纸布产品具有防水、防污、抗菌等功能,有效改善墙纸的透气性,有杀菌功效,可有效的改善室内环境。
附图说明
图1本发明流程示意图。
具体实施方式
现结合附图,详述本发明的具体实施方式:
如图1所示,一种绒面压花聚乳酸熔纺壁纸生产工艺,包括聚乳酸低面无纺布成形工艺、绒面无纺布复合成形工艺,所述聚乳酸低面无纺布成形工艺为:聚乳酸切片经过无纺布切片干燥塔1干燥处理后,聚乳酸切片中的含水量降低至30PPm以下后,通过无纺布切片干燥塔1的干切片料管进入无纺布纺丝螺杆挤出机2,干燥后的聚乳酸切片进入无纺布纺丝螺杆挤出机2的螺杆进料段后,在套筒传导热的作用下聚乳酸切片开始吸热、软化,当聚乳酸切片进入无纺布纺丝螺杆挤出机2的螺杆压缩段后,聚乳酸切片在套筒传到热以及半熔融切片的高压作用、切片熔融、压缩,熔体密实度为1.28G/mL,熔化后的熔体通过无纺布纺丝螺杆挤出机2的螺杆计量段进入无纺布纺丝挤出箱体3的熔体管道中,在无纺布纺丝挤出箱体3的联苯或者导热油热载体的工艺温度下,熔体得以进一步的平衡塑化,塑化后的熔体经过计量泵计量、增压、并经过滤后,通过无纺布纺丝挤出箱体3下方的喷丝板挤出成纤;喷丝板挤出成纤的数千根纤维在高速冷却气流6的作用下通过纺丝甬道4平落在无纺布传送带10上,落到无纺布传送带10上的若干丝条经喂入平层压辊7压平并相互粘合形成初生无纺布,粘结在无纺布传送带10上的初生无纺布顺无纺布传送带10进通过平层剥离压辊11,将无纺布传送带10表层成形的初生无纺布与无纺布传送带10剥离,成形后的初生无纺布通过拉伸罗拉12,并在拉伸罗拉12的高速拉伸下变薄,使其伸长率与布料厚度达到工艺要求,使其伸长率降低至50%以下,布料厚度达到0.3-0.5mm;
所述绒面无纺布复合成形工艺为:聚乳酸切片经过干燥塔21干燥处理后,聚乳酸切片中的含水量降低至30PPm以下后,通过干燥塔21的干切片料管进入纺丝螺杆挤出机22,干燥后的聚乳酸切片进入纺丝螺杆挤出机22的螺杆进料段后,在套筒传导热的作用下聚乳酸切片开始吸热,当聚乳酸切片进入压缩段后,聚乳酸切片在套筒传到高温及高压作用下开始熔融、压缩,熔体密实度为1.28G/mL,最后熔化后的熔浆通过纺丝螺杆挤出机22的螺杆计量段进入纺丝箱体23的熔体管道中,在纺丝箱体23的联苯或者导热油热载体的工艺温度下,熔体温度得以进一步的平衡塑化,塑化后的熔体经过计量泵计量、增压、并经过滤后通过纺丝箱体23下方的喷丝板挤出成纤,喷丝板挤出成纤的数千条纤维在100-150℃、0.5马赫的第二高速冷却气流26的作用下通过第二纺丝甬道24拉成单丝线密度1dtex以下的类似短纤维的棉絮丝条,落在拉伸罗拉12外侧底层初生无纺布上;经压花罗拉14与挤压罗拉13的挤压,绒面无纺布与拉伸后的底层初生无纺布压合在一起,同时绒面无纺布上压出凸凹有序的花纹,复合后形成绒面聚乳酸墙纸无纺布,绒面聚乳酸墙纸无纺布经冷却辊15、张力辊组16拉平定型,通过输出罗拉17、切边分条18卷绕到卷绕机19的芯轴上,再经后道工序定长包装,制成聚乳酸绒面墙纸。
本发明高速冷却气流6是由制冷机降温后的冷气由高速风机增压后送至静压室5并经过风排向甬道下侧吹射形成的,以达到丝条冷却及喷丝头拉伸的作用。
本发明无纺布传送带10由四个固定转轮8支撑,并通过横向移动的张紧轮9将无纺布传送带10拉紧,无纺布传送带10的动力是由固定转轮8上的同步电机驱动。
本发明所述第二高速冷却气流26是由高速风机增压加温后送至第二静压室25并经过风排向甬道下侧吹射形成的,以达到丝条快速拉成超细绒毛的作用。
Claims (4)
1.一种绒面压花聚乳酸熔纺壁纸生产工艺,其特征在于:包括聚乳酸低面无纺布成形工艺、绒面无纺布复合成形工艺,
所述聚乳酸低面无纺布成形工艺为:聚乳酸切片经过无纺布切片干燥塔(1)干燥处理后,聚乳酸切片中的含水量降低至30PPm以下后,通过无纺布切片干燥塔(1)的干切片料管进入无纺布纺丝螺杆挤出机(2),干燥后的聚乳酸切片进入无纺布纺丝螺杆挤出机(2)的螺杆进料段后,在套筒传导热的作用下聚乳酸切片开始吸热、软化,当聚乳酸切片进入无纺布纺丝螺杆挤出机(2)的螺杆压缩段后,聚乳酸切片在套筒传导热以及半熔融切片的高压作用、切片熔融、压缩,熔体密度为1.28G/mL,熔化后的熔体通过无纺布纺丝螺杆挤出机(2)的螺杆计量段进入无纺布纺丝挤出箱体(3)的熔体管道中,在无纺布纺丝挤出箱体(3)的联苯或者导热油热载体的工艺温度下,熔体得以进一步的平衡塑化,塑化后的熔体经过计量泵计量、增压、并经过滤后,通过无纺布纺丝挤出箱体(3)下方的喷丝板挤出成纤;喷丝板挤出成纤的数千根纤维在高速冷却气流(6)的作用下通过纺丝甬道(4)平落在无纺布传送带(10)上,落到无纺布传送带(10)上的若干丝条喂入平层压辊(7)压平并相互粘合形成初生无纺布,粘结在无纺布传送带(10)上的初生无纺布顺着无纺布传送带(10)进入通过平层剥离压辊(11),将无纺布传送带(10)表层成形的初生无纺布与无纺布传送带(10)剥离,成形后的初生无纺布通过拉伸罗拉(12),并在拉伸罗拉(12)的高速拉伸下变薄,使其伸长率降低至50%以下,布料厚度达到0.3-0.5mm;
所述绒面无纺布复合成形工艺为:聚乳酸切片经过干燥塔(21)干燥处理后,聚乳酸切片中的含水量降低至30PPm以下后,通过干燥塔(21)的干切片料管进入纺丝螺杆挤出机(22),干燥后的聚乳酸切片进入纺丝螺杆挤出机(22)的螺杆进料段后,在套筒传导热的作用下聚乳酸切片开始吸热,当聚乳酸切片进入压缩段后,聚乳酸切片在套筒传导高温及高压作用下开始熔融、压缩,熔体密度为1.28G/mL,最后熔化后的熔浆通过纺丝螺杆挤出机(22)的螺杆计量段进入纺丝箱体(23)的熔体管道中,在纺丝箱体(23)的联苯或者导热油热载体的工艺温度下,熔体温度得以进一步的平衡塑化,塑化后的熔体经过计量泵计量、增压、并经过滤后通过纺丝箱体(23)下方的喷丝板挤出成纤,喷丝板挤出成纤的数千条纤维在100-150℃、0.5马赫的第二高速冷却气流(26)的作用下通过第二纺丝甬道(24)拉成单丝线密度1dtex以下的类似短纤维的棉絮丝条,落在拉伸罗拉(12)外侧底层初生无纺布上;经压花罗拉(14)与挤压罗拉(13)的挤压,绒面无纺布与拉伸后的底层初生无纺布压合在一起,同时绒面无纺布上压出凸凹有序的花纹,复合后形成绒面聚乳酸墙纸无纺布,绒面聚乳酸墙纸无纺布经冷却辊(15)、张力辊组(16)拉平定型,通过输出罗拉(17)、切边分条(18)卷绕到卷绕机(19)的芯轴上,再经后道工序定长包装,制成聚乳酸绒面墙纸。
2.根据权利要求1所述的一种绒面压花聚乳酸熔纺壁纸生产工艺,其特征在于:所述高速冷却气流(6)是由制冷机降温后的冷气由高速风机增压后送至静压室(5)并经过风排向甬道下侧吹射形成的,以达到丝条冷却及喷丝头拉伸的作用。
3.根据权利要求1所述的一种绒面压花聚乳酸熔纺壁纸生产工艺,其特征在于:所述无纺布传送带(10)由四个固定转轮(8)支撑,并通过横向移动的张紧轮(9)将无纺布传送带(10)拉紧,无纺布传送带(10)的动力是由固定转轮(8)上的同步电机驱动。
4.根据权利要求1所述的一种绒面压花聚乳酸熔纺壁纸生产工艺,其特征在于:所述第二高速冷却气流(26)是由高速风机增压加温后送至第二静压室(25)并经过风排向甬道下侧吹射形成的,以达到丝条快速拉成超细绒毛的作用。
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