CN112478367A - 一种抗摔抗变形的纸质包装盒及其制备工艺 - Google Patents
一种抗摔抗变形的纸质包装盒及其制备工艺 Download PDFInfo
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Abstract
本发明公开了一种抗摔抗变形的纸质包装盒及其制备工艺。所述包装盒由外层、外海绵、中间层、内海绵和内层热压粘接制成,外层和内层由经过表面接枝聚氨酯处理之后表面活性基团增加的碳纤维与牛皮纸浸渍、热压合成,外海绵和内海绵均为高浓度聚氨酯海绵,具有良好的吸能以及复原能力,中间层为高密度聚乙烯、增容剂、热塑性聚氨酯、轻质碳酸钙共混改性制成。本发明具有抗拉、抗摔以及抗变形能力,能够更有效的保护盒体以及和盒体内的物品。
Description
技术领域
本发明涉及纸制品技术领域,具体为一种抗摔抗变形的纸质包装盒及其制备工艺。
背景技术
随着中国经济的快速发展,人民生活水平提高和人口老龄化引起的医疗费用增加,新药品开发力度加大,医疗保障体系改革的步伐加快和城镇居民医疗保险的扩大,工业将会继续保持快速增长的势头。另外中国包材质量及包装盒品种都明显低于国际水平。调查,在发达国家,包装占产品价值的30%,而中国不到10%。今后几年将是中国包装产业的快速发展时期。
目前的包装盒种类繁多,材质多样,有纸盒、铁盒、木盒、塑料盒等各种各样的包装盒,每种包装盒各有优势,纸盒造价低廉,铁盒结实耐用,木盒造型美观,塑料盒方便实用,其中尤以纸质包装盒用途广泛,需求量大。
随着需求量的增加,纸质包装盒的缺点也就越来越明显,运输过程中的不慎跌落、挤压、堆叠都会造成包装盒的损坏进而损坏包装物品。本发明就提出了一种抗摔抗变形的纸质包装盒及其制备工艺来解决上述所说的问题。
发明内容
本发明的目的在于提供一种抗摔抗变形的纸质包装盒及其制备工艺,以解决上述背景技术中提出的问题。
为了解决上述技术问题,本发明提供如下技术方案:
一种抗摔抗变形的纸质包装盒由外层、外海绵、中间层、内海绵和内层制成,由外而内依次按照外层、外海绵、中间层、内海绵、内层的顺序进行热压粘接。
进一步的,所述外层和内层均为表面浸渍有碳纤维的牛皮纸。牛皮纸表面浸渍有碳纤维可以提高牛皮纸的抗拉、抗冲击能力。
进一步的,所述碳纤维经过表面接枝聚氨酯处理,表面活性基团增加。碳纤维表面引入羟基、羧基、羰基可以改善碳纤维的界面粘结强度。
进一步的,所述外海绵和内海绵均为高密度聚氨酯海绵。高密度聚氨酯海绵具有良好的吸能以及复原能力。
进一步的,所述中间层为高密度聚乙烯、增容剂、热塑性聚氨酯、轻质碳酸钙熔融共混改性制成,高密度聚乙烯与热塑性聚氨酯熔融共混之后拉伸强度、断裂伸长率、耐热性、冲击强度都有显著提高,改善了共混材料的综合性能。
进一步的,所述增容剂为低密度聚乙烯接枝马来酸酐,轻质碳酸钙填充高密度聚乙烯可以提高刚性、耐热性、耐油性,但高密度聚乙烯与轻质碳酸钙界面结合性差,会导致力学性能下降,加入增容剂可以改善界面结合性,避免力学性能下降,同时还可以作为高密度聚乙烯和热塑性聚氨酯的增容剂,使两者更好地结合。
一种抗摔抗变形的纸质包装盒制备工艺,包括以下步骤:
步骤一:将碳纤维表面接枝改性;
步骤二:将改性后的碳纤维与两份牛皮纸浸渍、热压合成外层和内层;
步骤三:将两份高浓度聚氨酯海绵切割制得外海绵和内海绵;
步骤四:将高密度聚乙烯、增容剂、热塑性聚氨酯、轻质碳酸钙共混改性制得中间层基体;
步骤五:将中间层基体切割打磨制得中间层;
步骤六:将制得的外层、内层、外海绵、内海绵和中间层按照外层、外海绵、中间层、内海绵、内层的顺序依次热压粘接,得到包装盒盒纸;
步骤七:将热压粘接后的包装盒盒纸拼接塑造成形制得包装盒。
进一步的,所述步骤一步骤为:
(1)清除碳纤维表面涂层:将碳纤维材料放在丙酮溶液中超声处理30~50min,然后将碳纤维取出,置于真空烘箱中,在70~80℃中干燥3~4h,清除了表面杂质,形成微孔,增大了粗糙度,形成大小不一的孔隙,孔隙率高;
(2)碳纤维氧化:将(1)中处理过的碳纤维在常温下置于体积比为3:1的浓硫酸和浓硝酸溶液中,水浴加热至75℃,氧化处理5~8h,再用去离子水浸泡15min,重复浸泡3~4次,置于真空烘箱中,在70~80℃干燥5h;
(3)接枝聚氨酯:将(2)中氧化处理后的碳纤维置于聚氨酯接枝液中,在80~120℃下抽提8~10h,再将碳纤维置于去离子水中浸泡10min,重复浸泡2~3次,放置真空烘箱中,在30~50℃中干燥3h,得到表面接枝聚氨酯的碳纤维,聚氨酯接枝液为聚氨酯与丙酮溶液混合,水浴加热2~3h所得,表面接枝聚氨酯的碳纤维表面活性基团增加,增加了羟基、羧基、羰基,改善了界面粘结强度,提高了表面活性,力学性能明显增加。
进一步的,所述步骤二为用步骤一中改性后的碳纤维浸渍在两份牛皮纸上,浸渍其中1~2min,然后干燥处理,置于真空烘箱中在60~90℃中干燥2~3h,然后取出进行热压固化处理10min,即可得到外层和内层,浸渍、热压后制得的碳纤维牛皮纸,抗拉、抗湿以及抗变形能力都有所提高。
进一步的,所述步骤三将两份高浓度聚氨酯海绵切割为一面平整,一面UV型(形状介于U型、V性之间,强度更高,抗拉、抗变形能力更强),即可得到外海绵和内海绵,便于热压粘接。
进一步的,所述步骤四的步骤为:
(1)填充改性:将高密度聚乙烯、轻质碳酸钙和1/2量的增容剂混合搅拌均匀,放入高速热混合机中,在150~180℃,转速为1500r/min中混合20~30min,得到物料A,轻质碳酸钙填充高密度聚乙烯可以提高刚性、耐热性、耐油性;
(2)熔融共混:将物料A、1/2量的增容剂和热塑性聚氨酯放入干粉混合器中进行初混合,在120~150℃中混合15~25min,混合均匀后放入双辊混炼机中,在180~200℃中混炼40min,塑造成型,得到中间层基体,高密度聚乙烯与热塑性聚氨酯熔融共混之后拉伸强度、断裂伸长率、耐热性、冲击强度都有显著提高,改善了共混材料的综合性能;
进一步的,所述步骤五将中间层基体切割打磨成双面UV型(形状介于U型、V性之间,强度更高,抗拉、抗变形能力更强),即可得到中间层,增强了抗压,耐破的能力,也便于热压粘接。
进一步的,所述步骤六将得到的外层、内层、外海绵、内海绵和中间层按照外层、外海绵、中间层、内海绵、内层的顺序依次热压粘接,得到包装盒盒纸,通过粘接成形来对包装盒进行进一步增强韧性和坚固性。
进一步的,将热压粘接后的包装盒盒纸拼接塑造成形制得包装盒。
与现有技术相比,本发明所达到的有益效果是:
1、多层结构,采用了从外至内依次为外层、外海绵、中间层、内海绵、内层的结构,厚度增加,安全性能更好。
2、高密度聚氨酯海绵具有很好的吸能效果及还原效果,能够极大的减小碰撞强度以及提供缓冲过程。
3、轻质碳酸钙填充高密度聚乙烯可以提高刚性、耐热性、耐油性。
4、高密度聚乙烯与热塑性聚氨酯熔融共混之后拉伸强度、断裂伸长率、耐热性、冲击强度都有显著提高,改善了共混材料的综合性能。
5、增容剂可以改善高浓度聚乙烯和轻质碳酸钙的界面结合性,避免力学性能下降,同时还可以作为高密度聚乙烯和热塑性聚氨酯的增容剂,使两者更好地结合。
6、清除了碳纤维表面杂质,形成微孔,增大了粗糙度,形成大小不一的孔隙,孔隙率高。
7、碳纤维表面接枝聚氨酯,表面活性基团增加,增加了羟基、羧基、羰基,改善了界面粘结强度,提高了表面活性,力学性能明显增加。
8、中间层采用的UV型,形状介于U型、V性之间,强度更高,抗拉、抗变形能力更强。
9、外层、内层采用聚氨酯接枝处理,内海绵、外海绵均为聚氨酯海绵,中间层为热塑性聚氨酯,按照外层、外海绵、中间层、内海绵、内层的顺序依次热压粘接时可以更好地粘接,结合更加紧密。
附图说明
附图用来提供对本专利的进一步理解,并且构成说明书的一部分,与本专利的实施例一起用于解释本专利,并不构成对本专利的限制。在附图中:
图1是本专利的包装盒盒体结构示意图;
图中:1外层;2外海绵;3中间层;4内海绵;5内层。
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,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做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。
实施例1
一种抗摔抗变形的纸质包装盒及其制备工艺,具体步骤如下:
步骤一:将碳纤维表面接枝改性;
步骤二:将改性后的碳纤维与两份牛皮纸浸渍、热压合成外层1和内层5;
步骤三:将两份高浓度聚氨酯海绵切割制得外海绵2和内海绵4;
步骤四:将高密度聚乙烯、增容剂、热塑性聚氨酯、轻质碳酸钙共混改性制得中间层基体;
步骤五:将中间层基体切割打磨制得中间层3;
步骤六:将制得的外层1、内层5、外海绵2、内海绵4和中间层3按照外层1、外海绵2、中间层3、内海绵4、内层5的顺序依次热压粘接,得到包装盒盒纸;
步骤七:将热压粘接后的包装盒盒纸拼接塑造成形制得包装盒。
其中,步骤一碳纤维表面接枝改性步骤为:
(1)清除碳纤维表面涂层:将碳纤维材料放在丙酮溶液中超声处理30min,再将碳纤维取出,置于真空烘箱中,在75℃中干燥3h;
(2)碳纤维氧化:将(1)中处理过的碳纤维在常温下置于体积比为3:1的浓硫酸和浓硝酸溶液中,水浴加热至75℃,氧化处理6h,然后用去离子水浸泡15min重复浸泡4次,置于真空烘箱中,在75℃干燥5h;
(3)接枝聚氨酯:将(2)中氧化处理后的碳纤维置于聚氨酯接枝液中,在80℃下抽提10h,然后将碳纤维置于去离子水中浸泡10min,重复浸泡3次,放置真空烘箱中,在35℃中干燥3h,得到表面接枝聚氨酯的碳纤维,聚氨酯接枝液为聚氨酯与丙酮溶液混合,水浴加热3h所得。
其中,步骤二为用步骤一中改性后的碳纤维浸渍在两张牛皮纸上,浸渍其中2min,然后干燥处理,置于真空烘箱中在60℃中干燥3h,然后取出进行热压固化处理10min,即可得到外层1和内层5。
其中,步骤三将两份高浓度聚氨酯海绵切割为一面平整,一面UV型(形状介于U型、V性之间,强度更高,抗拉、抗变形能力更强),即可得到外海绵2和内海绵4。
其中,步骤四为:
(1)填充改性:将高密度的聚乙烯、轻质碳酸钙和1/2量的增容剂混合搅拌均匀,放入高速热混合机中,在150℃,转速为1500r/min中混合20min,得到物料A;
(2)熔融共混:将物料A、1/2量的增容剂和热塑性聚氨酯放入干粉混合器中进行初混合,在120℃中混合15min,混合均匀后放入双辊混炼机中,在180℃中混炼40min,塑造成形,得到中间层基体;
其中,步骤五将中间层基体切割打磨成双面UV型(形状介于U型、V性之间,强度更高,抗拉、抗变形能力更强),即可得到中间层3。
其中,步骤六将得到的外层1、内层5、外海绵2、内海绵4和中间层3按照外层1、外海绵2、中间层3、内海绵4、内层5的顺序依次热压粘接,得到包装盒盒纸。
其中,步骤七将热压粘接后的包装盒盒纸拼接塑造成形制得包装盒。
实施例2
步骤一:将碳纤维表面接枝改性;
步骤二:将改性后的碳纤维与两份牛皮纸浸渍、热压合成外层1和内层5;
步骤三:将两份高浓度聚氨酯海绵切割制得外海绵2和内海绵4;
步骤四:将高密度聚乙烯、增容剂、热塑性聚氨酯、轻质碳酸钙共混改性制得中间层基体;
步骤五:将中间层基体切割打磨制得中间层3;
步骤六:将制得的外层1、内层5、外海绵2、内海绵4和中间层3按照外层1、外海绵2、中间层3、内海绵4、内层5的顺序依次热压粘接,得到包装盒盒纸;
步骤七:将热压粘接后的包装盒纸拼接塑造成形制得包装盒。
其中,步骤一碳纤维表面接枝改性步骤为:
(1)清除碳纤维表面涂层:将碳纤维材料放在丙酮溶液中超声处理40min,再将碳纤维取出,置于真空烘箱中,在75℃中干燥3h;
(2)碳纤维氧化:将(1)中处理过的碳纤维在常温下置于体积比为3:1的浓硫酸和浓硝酸溶液中,水浴加热至75℃,氧化处理7h,然后用去离子水浸泡15min,重复浸泡4次,置于真空烘箱中,在75℃干燥5h;
(3)接枝聚氨酯:将(2)中氧化处理后的碳纤维置于聚氨酯接枝液中,在100℃下抽提10h,然后将碳纤维置于去离子水中浸泡10min,重复浸泡3次,放置真空烘箱中,在45℃中干燥3h,得到表面接枝聚氨酯的碳纤维,聚氨酯接枝液为聚氨酯与丙酮溶液混合,水浴加热3h所得。
其中,步骤二为用步骤一中改性后的碳纤维在两份牛皮纸上,浸渍其中2min,然后干燥处理,置于真空烘箱中在75℃中干燥3h,然后取出进行热压固化处理10min,即可得到外层1和内层5。
其中,步骤三将两份高浓度聚氨酯海绵切割为一面平整,一面UV型(形状介于U型、V性之间,强度更高,抗拉、抗变形能力更强),即可得到外海绵2和内海绵4。
其中,步骤四为:
(1)填充改性:将高密度的聚乙烯、轻质碳酸钙和1/2量的增容剂混合搅拌均匀,放入高速热混合机中,在165℃,转速为1500r/min中混合25min,得到物料A;
(2)熔融共混:将物料A、1/2量的增容剂和热塑性聚氨酯放入干粉混合器中进行初混合,在135℃中混合20min,混合均匀后放入双辊混炼机中,在190℃中混炼40min,塑造成形,得到中间层基体;
其中,步骤五将中间层基体切割打磨成双面UV型(形状介于U型、V性之间,强度更高,抗拉、抗变形能力更强),即可得到中间层3。
其中,步骤六将得到的外层1、内层5、外海绵2、内海绵4和中间层3按照外层1、外海绵2、中间层3、内海绵4、内层5的顺序依次热压粘接,得到包装盒盒纸。
其中,步骤七将热压粘接后的包装盒盒纸拼接塑造成形制得包装盒。
实施例3
一种抗摔抗变形的纸质包装盒及其制备工艺,具体步骤如下:
步骤一:将碳纤维表面接枝改性;
步骤二:将改性后的碳纤维与两份牛皮纸浸渍、热压合成外层1和内层5;
步骤三:将两份高浓度聚氨酯海绵切割制得外海绵2和内海绵4;
步骤四:将高密度聚乙烯、增容剂、热塑性聚氨酯、轻质碳酸钙共混改性制得中间层基体;
步骤五:将中间层基体切割打磨制得中间层3;
步骤六:将制得的外层1、内层5、外海绵2、内海绵4和中间层3按照外层1、外海绵2、中间层3、内海绵4、内层5的顺序依次热压粘接,得到包装盒盒纸;
步骤七:将热压粘接后的包装盒纸拼接塑造成形制得包装盒。
其中,步骤一碳纤维表面接枝改性步骤为:
(1)清除碳纤维表面涂层:将碳纤维材料放在丙酮溶液中超声处理50min,再将碳纤维取出,置于真空烘箱中,在75℃中干燥3h;
(2)碳纤维氧化:将(1)中处理过的碳纤维在常温下置于体积比为3:1的浓硫酸和浓硝酸溶液中,水浴加热至75℃,氧化处理8h,然后用去离子水浸泡15min,重复浸泡4次,置于真空烘箱中,在75℃干燥5h;
(3)接枝聚氨酯:将(2)中氧化处理后的碳纤维置于聚氨酯接枝液中,在120℃下抽提10h,然后将碳纤维置于去离子水中浸泡10min,重复浸泡3次,放置真空烘箱中,在50℃中干燥3h,得到表面接枝聚氨酯的碳纤维,聚氨酯接枝液为聚氨酯与丙酮溶液混合,水浴加热3h所得。
其中,步骤二为用步骤一中改性后的碳纤维浸渍在两份牛皮纸上,浸渍其中2min,然后干燥处理,置于真空烘箱中在90℃中干燥3h,然后取出进行热压固化处理10min,即可得到外层1和内层5。
其中,步骤三将两份高浓度聚氨酯海绵切割为一面平整,一面UV型(形状介于U型、V性之间,强度更高,抗拉、抗变形能力更强),即可得到外海绵2和内海绵4。
其中,步骤四为:
(1)填充改性:将高密度的聚乙烯、轻质碳酸钙和1/2量的增容剂混合搅拌均匀,放入高速热混合机中,在180℃,转速为1500r/min中混合30min,得到物料A;
(2)熔融共混:将物料A、1/2量的增容剂和热塑性聚氨酯放入干粉混合器中进行初混合,在150℃中混合25min,混合均匀后放入双辊混炼机中,在200℃中混炼40min,塑造成形,得到中间层基体;
其中,步骤五将中间层基体切割打磨成双面UV型(形状介于U型、V性之间,强度更高,抗拉、抗变形能力更强),即可得到中间层3。
其中,步骤六将得到的外层1、内层5、外海绵2、内海绵4和中间层3按照外层1、外海绵2、中间层3、内海绵4、内层5的顺序依次热压粘接,得到包装盒盒纸。
其中,步骤七将热压粘接后的包装盒盒纸拼接塑造成形制得包装盒。
实施例4
一种抗摔抗变形的纸质包装盒及其制备工艺,具体步骤如下:
步骤一:用两份原浆牛皮纸制作外层1和内层5;
步骤二:将两份高浓度聚氨酯海绵切割制得外海绵2和内海绵4;
步骤三:将高密度聚乙烯、增容剂、热塑性聚氨酯、轻质碳酸钙共混改性制得中间层基体;
步骤四:将中间层基体切割打磨制得中间层3;
步骤五:将制得的外层1、内层5、外海绵2、内海绵4和中间层3按照外层1、外海绵2、中间层3、内海绵4、内层5的顺序依次热压粘接,得到包装盒盒纸;
步骤六:将热压粘接后的包装盒纸拼接塑造成形制得包装盒。
其中,步骤二将两份高浓度聚氨酯海绵切割为一面平整,一面UV型(形状介于U型、V性之间,强度更高,抗拉、抗变形能力更强),即可得到外海绵2和内海绵4。
其中,步骤三为:
(1)填充改性:将高密度的聚乙烯、轻质碳酸钙和1/2量的增容剂混合搅拌均匀,放入高速热混合机中,在160℃,转速为1500r/min中混合25min,得到物料A;
(2)熔融共混:将物料A、1/2量的增容剂和热塑性聚氨酯放入干粉混合器中进行初混合,在135℃中混合20min,混合均匀后放入双辊混炼机中,在190℃中混炼40min,塑造成形,得到中间层基体;
其中,步骤四将中间层基体切割打磨成双面UV型(形状介于U型、V性之间,强度更高,抗拉、抗变形能力更强),即可得到中间层3。
其中,步骤五将得到的外层1、内层5、外海绵2、内海绵4和中间层3按照外层1、外海绵2、中间层3、内海绵4、内层5的顺序依次热压粘接,得到包装盒盒纸。
其中,步骤六将热压粘接后的包装盒盒纸拼接塑造成形制得包装盒。
试验:
按照本发明实施例制备的包装盒具有良好的抗摔抗变形能力,用环压强度试验机、耐破度仪、摆锤式试验机对包装盒盒纸进行边压强度、耐破强度、冲击强度的测试,其中:
(1)边压强度(将试样置于试验仪下压板正中间,用导块支持试样,使试样的表面垂直于压板,开动试验仪施加压力,当加压到50N时移开导块,直至试样压坏,记录试样所能承受的最大压力):分别为:实验例1:2.04×104N/m;实验例2:2.30×104N/m;实验例3:2.13×104N/m;实验例4:1.87×104N/m;
(2)耐破强度(一个被下压环牢固夹紧的能够凸起并复原的橡胶膜在液压的作用下,以一定的力把紧紧固定在上、下压环之间的试样通过凸起的橡胶膜使试样破裂,测试时把试样分成A、B组,A组正面贴向橡胶膜,B组反面贴向橡胶膜进行测试,当试样破裂时,读取显示值)分别为:实验例1:1026kPa;实验例2:1237kPa;实验例3:1140kPa;实验例4:890kPa;
(3)冲击强度(用已知能量的摆锤打击支承成水平梁的试样,由摆锤一次冲击使试样破坏。冲击线位于两支座正中,若为缺口试样则冲击线应正对缺口,以冲击前、后摆锤的能量差,确定试样在破坏时所吸收的能量。然后按试样原始横截面积计算其冲击强度)分别为:实验例1:337kJ/m2;实验例2:352kJ/m2;实验例3:340kJ/m2;实验例4:311kJ/m2;
综合以上测试说明,本发明实施制备的包装盒具有良好的抗摔抗变形能力,解决了现有技术中包装盒易破易变形的问题。
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (9)
1.一种抗摔抗变形的纸质包装盒,其特征在于:所述包装盒由外层(1)、外海绵(2)、中间层(3)、内海绵(4)和内层(5)制成,由外而内依次按照外层(1)、外海绵(2)、中间层(3)、内海绵(4)、内层(5)的顺序进行热压粘接。
2.根据权利要求1所述的一种抗摔抗变形的纸质包装盒,其特征在于:所述外层(1)和内层(5)均为表面浸渍有碳纤维的牛皮纸。
3.根据权利要求2所述的一种抗摔抗变形的纸质包装盒,其特征在于:所述碳纤维表面通过聚氨酯和丙酮的混合溶液反应接枝处理。
4.根据权利要求1所述的一种抗摔抗变形的纸质包装盒,其特征在于:所述外海绵(2)和内海绵(4)均为高密度聚氨酯海绵。
5.根据权利要求1所述的一种抗摔抗变形的纸质包装盒,其特征在于:所述中间层(3)为高密度聚乙烯、增容剂、热塑性聚氨酯、轻质碳酸钙共混改性制成。
6.根据权利要求5所述的一种抗摔抗变形的纸质包装盒,其特征在于:所述增容剂为低密度聚乙烯接枝马来酸酐。
7.一种抗摔抗变形的纸质包装盒制备工艺,其特征在于:
包括以下步骤:
步骤一:将碳纤维表面接枝改性;
步骤二:将改性后的碳纤维与两份牛皮纸浸渍、热压合成外层(1)和内层(5);
步骤三:将两份高浓度聚氨酯海绵切割制得外海绵(2)和内海绵(4);
步骤四:将高密度聚乙烯、增容剂、热塑性聚氨酯、轻质碳酸钙共混改性制得中间层基体;
步骤五:将中间层基体切割打磨制得中间层(3);
步骤六:将制得的外层(1)、内层(5)、外海绵(2)、内海绵(4)和中间层(3)按照外层(1)、外海绵(2)、中间层(3)、内海绵(4)、内层(5)的顺序依次热压粘接,得到包装盒盒纸;
步骤七:将热压粘接后的包装盒盒纸拼接塑造成形制得包装盒。
8.根据权利要求7所述的一种抗摔抗变形的纸质包装盒制备工艺,其特征在于:
所述步骤一的接枝步骤为:
(1)清除碳纤维表面涂层:将碳纤维材料放在丙酮溶液中超声处理,将碳纤维取出后,置于真空烘箱中,烘干干燥处理;
(2)碳纤维氧化:将(1)中处理过的碳纤维置于浓硫酸和浓硝酸混合溶液中,水浴加热,氧化处理,再用去离子水浸泡,重复浸泡,置于真空烘箱中,烘干干燥处理;
(3)接枝聚氨酯:将(2)中氧化处理后的碳纤维置于聚氨酯接枝液中,抽提处理,再将碳纤维置于去离子水中浸泡,重复浸泡,放置真空烘箱中,烘干干燥处理,得到表面接枝聚氨酯的碳纤维,聚氨酯接枝液为聚氨酯与丙酮溶液混合,水浴加热所得;
所述步骤二为用步骤一中改性后的碳纤维浸渍在两份牛皮纸上,干燥处理,置于真空烘箱中干燥处理,取出后进行热压固化处理,即可得到外层(1)和内层(5);
所述步骤三将两份高浓度海绵均切割为一面平整,一面UV型,即可得到外海绵(2)和内海绵(4);
所述步骤四的步骤为:
(1)填充改性:将高密度聚乙烯、轻质碳酸钙和1/2量增容剂混合搅拌均匀,放入高速热混合机中,进行充分混合,得到物料A;
(2)熔融共混:将物料A、1/2量的增容剂和热塑性聚氨酯放入干粉混合器中进行初混合,混合均匀后放入双辊混炼机中进行熔融共混,塑造成形,得到中间层基体;
所述步骤五将中间层基体切割打磨成双面UV型,即可得到中间层(3);
所述步骤六将得到的外层(1)、内层(5)、外海绵(2)、内海绵(4)和中间层(3)按照外层(1)、外海绵(2)、中间层(3)、内海绵(4)、内层(5)的顺序依次热压粘接,得到包装盒盒纸;
所述步骤七将热压粘接后的包装盒盒纸拼接塑造成形制得包装盒。
9.根据权利要求8所述的一种抗摔抗变形的纸质包装盒制备工艺,其特征在于:
所述步骤一碳纤维表面接枝改性步骤为:
(1)清除碳纤维表面涂层:将碳纤维材料放在甲乙酮溶液中超声处理30~50min,然后将碳纤维取出,置于真空烘箱中,在70~80℃中干燥3~4h;
(2)碳纤维氧化:将(1)中处理过的碳纤维在常温下置于体积比为3:1的浓硫酸和浓硝酸溶液中,水浴加热至75℃,氧化处理5~8h,再用去离子水浸泡15min,重复浸泡3~4次,置于真空烘箱中,在70~80℃干燥5h;
(3)接枝聚氨酯:将(2)中氧化处理后的碳纤维置于聚氨酯接枝液中,在80~120℃下抽提8~10h,再将碳纤维置于去离子水中浸泡10min,重复浸泡2~3次,放置真空烘箱中,在30~50℃中干燥3h,得到表面接枝聚氨酯的碳纤维,聚氨酯接枝液为聚氨酯与丙酮溶液混合,水浴加热2~3h所得;
所述步骤二为用步骤一中改性后的碳纤维浸渍在两份牛皮纸上,浸渍其中1~2min,置于真空烘箱中在60~90℃中干燥处理2~3h,取出后进行热压固化处理10min,即可得到外层(1)和内层(5);
所述步骤三将两份高浓度海绵均切割为一面平整,一面UV型,即可得到外海绵(2)和内海绵(4);
所述步骤四的步骤为:
(1)填充改性:将高密度的聚乙烯、轻质碳酸钙和1/2量的增容剂混合搅拌均匀,放入高速热混合机中,在150~180℃,转速为1500r/min中混合20~30min,得到物料A;
(2)熔融共混:将物料A、1/2量的增容剂和热塑性聚氨酯放入干粉混合器中进行初混合,在120~150℃中混合15~25min,混合均匀后放入双辊混炼机中,在180~200℃中混炼40min,塑造成形,得到中间层基体;
所述步骤五将中间层基体切割打磨成双面UV型,即可得到中间层(3);
所述步骤六将得到的外层(1)、内层(5)、外海绵(2)、内海绵(4)和中间层(3)按照外层(1)、外海绵(2)、中间层(3)、内海绵(4)、内层(5)的顺序依次热压粘接,得到包装盒盒纸;
所述步骤七将热压粘接后的包装盒盒纸拼接塑造成形制得包装盒。
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