CN109549283A - 一种鞋底及其制作方法 - Google Patents

一种鞋底及其制作方法 Download PDF

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CN109549283A
CN109549283A CN201811371018.7A CN201811371018A CN109549283A CN 109549283 A CN109549283 A CN 109549283A CN 201811371018 A CN201811371018 A CN 201811371018A CN 109549283 A CN109549283 A CN 109549283A
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buffer layer
sole
outer bottom
layer
production method
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邓子辉
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Zhongshan Dongheng Shoes Co Ltd
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    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/14Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18Resilient soles
    • A43B13/187Resiliency achieved by the features of the material, e.g. foam, non liquid materials
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/02Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12Soles with several layers of different materials
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/14Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/22Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00Producing footwear
    • B29D35/12Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
    • B29D35/14Multilayered parts
    • B29D35/142Soles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/12Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/18Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/40Layered products comprising a layer of synthetic resin comprising polyurethanes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04Interconnection of layers
    • B32B7/12Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/046Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02Synthetic macromolecular fibres
    • B32B2262/0276Polyester fibres
    • B32B2262/0284Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • B32B2262/106Carbon fibres, e.g. graphite fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00Composition of foam
    • B32B2266/02Organic
    • B32B2266/0214Materials belonging to B32B27/00
    • B32B2266/0221Vinyl resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2437/00Clothing
    • B32B2437/02Gloves, shoes

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

本发明公开了一种鞋底及其制作方法,包括括内底、减震层和外底,所述减震层中部为向上拱起的曲面结构,所述内底沿减震层的上表面的曲面结构粘贴固定,所述减震层设置在内底与外底之间,所述减震层与外底相连的一面上间隔设置有若干凸块,所述凸块与减震层为一体成型结构,所述外底上远离减震层的一面上设置若干凹凸结构的防滑条;所述鞋底的制作方法包括制作内底、制作减震层、制作外底以及加压粘合;本发明将鞋底设计成多层复合结构,利用不同材料的优势特点制作功能性不同的鞋底分层,不仅舒适度高,而且弹性和耐磨性好,在保证鞋底强度的同时具有高性能的弯折回弹性,使得鞋底的使用寿命长。

Description

一种鞋底及其制作方法
技术领域
本发明涉及鞋底生产加工领域,尤指一种鞋底及其制作方法。
背景技术
鞋底的构造相当复杂,就广义而言,可包括外底、中底与鞋跟等所有构成底部的材料。依狭义来说,则仅指外底而言,一般鞋底材料共通的特性应具备耐磨、耐水,耐油、耐热、耐压、耐冲击、弹性好、容易适合脚型、定型后不易变型、保温、易吸收湿气等,同时更要配合中底,在走路换脚时有刹车作用不致于滑倒及易于停步等各项条件。鞋底用料的种类很多,可分为天然类底料和合成类底料两种。天然类底料包括天然底革、竹、木材等,合成类底料包括橡胶、塑料、橡塑合用材料、再生革、弹性硬纸板等。
在制造鞋底的时候,常采用各种材料,如橡胶、EVA、PVC等,但不管采用哪种材料,均制成单一密度或单一材质鞋底,如果选用较硬的材质,则鞋底过硬而弯曲效果不好;如果选用较为柔软的材质,虽然弯曲性能有了保障,强度过低,若碰到硬石或锐利物品则容易触碰脚掌从而导致舒适性能不好,如果要保证行走安全则需增加鞋底厚度,从而造成鞋底重量增加,使得人们在走路时因鞋底过重而颇为不便,舒适度较差。
发明内容
本发明要解决的技术问题是现有的鞋底多采用单一的材料和结构,使得鞋底的功能性单一,不能解决实际应用中的出现的多种问题,现提供一种鞋底及其制作方法,从而解决上述问题。
为了解决上述技术问题,本发明提供了如下的技术方案:
本发明提供一种鞋底,包括内底、减震层和外底,所述减震层中部为向上拱起的曲面结构,所述内底沿减震层的上表面的曲面结构粘贴固定,所述减震层设置在内底与外底之间,所述减震层与外底相连的一面上间隔设置有若干凸块,所述凸块与减震层为一体成型结构,所述外底上远离减震层的一面上设置若干凹凸结构的防滑条,所述减震层两端为向上弯曲翘起结构,所述减震将内底两端包裹在弯曲翘起结构内。
本发明还提供了上述鞋底的制作方法,包括如下步骤:
S1:制作内底:将记忆海绵根据内底的尺寸和形状进行剪裁得到内底的基底,在内底的基底上表面粘贴一层3D透气网布得到内底;
S2:制作减震层:
S21:将EVA载体树脂、橡胶颗粒、聚氯乙烯、微纳米晶纤维素粒子、多孔粉石英、丙二酸二乙酯和马来酸二丁基锡混合后进行第一阶段密炼,控制温度为90-100℃,时间为10-15min,然后加入交联剂以及发泡剂,进行第二阶段密炼,控制温度为100-110℃,时间为10-12min;
S22:第二阶段密炼结束后注入注射装置相应的模具内,分别控制成型温度为80-90℃,成型压力为1.2-1.4MPa,成型时间为70-80s,冷却成型后开模,得到减震层主体的预发泡底胚;
S23:将减震层主体的预发泡底胚进行表面处理,称好重量后,平整放入发泡模具内的对应位置,控制好成型温度170-180℃、成型时间9-11min和真空度-0.06至-0.09MPa,进行发泡成型,得到带有凸块的减震层粗品;
S24:将减震层粗品跳模后经过梯度降温、冷却定型、修边,得到减震层基底,在减震层基底上贴上一层透气织物得到减震层;
S3:制作外底:将适量的石墨烯改性TPU粉末填充至3D打印机的打印粉槽中,并通过3DP工艺按照设计的外底模型打印出石墨烯改性TPU鞋底。
S4:将内底、减震层和外底由上至下依次用EVA胶水加压粘合即可。
作为本发明的一种优选技术方案,步骤S1中,3D透气网布为由经线和纬线交织而成,经线和纬线均由涤纶线和竹炭纤维混合缠绕而成,经线包括中间线和侧线,中间线的两侧分别设有侧线,纬线间的二根经线相互交叉连接,中间线穿接过二根经线的交叉点,中间线和二根侧线相间隔分布。
作为本发明的一种优选技术方案,步骤S1中,橡胶颗粒为丁睛橡胶依次经过破碎、绉片、造粒,得到预处理的丁睛橡胶颗粒。
作为本发明的一种优选技术方案,步骤S1中,发泡剂为二苯磺酰肼醚。
作为本发明的一种优选技术方案,步骤S3中,石墨烯改性TPU粉末的制作方法为:用接枝法对石墨烯表面改性,再用还原法将氧化石墨烯均匀分散于TPU的溶液中,除去溶剂,制得粒径均匀形状一致的干燥的石墨烯改性TPU粉末。
作为本发明的一种优选技术方案,步骤S4中,EVA胶水以EVA树脂、水、正丁醇为主要成分协同水解桃胶和变性淀粉制成。
本发明所达到的有益效果是:本发明将鞋底设计成多层复合结构,利用不同材料的优势特点制作功能性不同的鞋底分层,不仅舒适度高,而且弹性和耐磨性好,在保证鞋底强度的同时具有高性能的弯折回弹性,使得鞋底的使用寿命长。
附图说明
附图用来提供对本发明的进一步理解,并且构成说明书的一部分,与本发明的实施例一起用于解释本发明,并不构成对本发明的限制。
在附图中:
图1是本发明的整体结构示意图;
图中标号:1、内底;2、减震层;3、外底;4、凸块;5、防滑条。
具体实施方式
在本发明的描述中,需要说明的是,术语“竖直”、“上”、“下”、“水平”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。
在本发明的描述中,还需要说明的是,除非另有明确的规定和限定,术语“设置”、“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
以下结合附图对本发明的优选实施例进行说明,应当理解,此处所描述的优选实施例仅用于说明和解释本发明,并不用于限定本发明。
实施例:如图1所示,本发明提供一种鞋底,包括内底1、减震层2和外底3,所述减震层2中部为向上拱起的曲面结构,所述内底1沿减震层2的上表面的曲面结构粘贴固定,所述减震层2设置在内底1与外底3之间,所述减震层2与外底3相连的一面上间隔设置有若干凸块4,所述凸块4与减震层2为一体成型结构,所述外底3上远离减震层2的一面上设置若干凹凸结构的防滑条5,所述减震层2两端为向上弯曲翘起结构,所述减震层2将内底1两端包裹在弯曲翘起结构内。
本发明还提供上述鞋底的制作方法,包括如下步骤:
S1:制作内底1:将记忆海绵根据内底1的尺寸和形状进行剪裁得到内底1的基底,在内底1的基底上表面粘贴一层3D透气网布得到内底1;
S2:制作减震层2:
S21:将EVA载体树脂、橡胶颗粒、聚氯乙烯、微纳米晶纤维素粒子、多孔粉石英、丙二酸二乙酯和马来酸二丁基锡混合后进行第一阶段密炼,控制温度为90-100℃,时间为10-15min,然后加入交联剂以及发泡剂,进行第二阶段密炼,控制温度为100-110℃,时间为10-12min;
S22:第二阶段密炼结束后注入注射装置相应的模具内,分别控制成型温度为80-90℃,成型压力为1.2-1.4MPa,成型时间为70-80s,冷却成型后开模,得到减震层2主体的预发泡底胚;
S23:将减震层2主体的预发泡底胚进行表面处理,称好重量后,平整放入发泡模具内的对应位置,控制好成型温度170-180℃、成型时间9-11min和真空度-0.06至-0.09MPa,进行发泡成型,得到带有凸块4的减震层2粗品;
S24:将减震层2粗品跳模后经过梯度降温、冷却定型、修边,得到减震层2基底,在减震层2基底上贴上一层透气织物得到减震层2;
S3:制作外底3:将适量的石墨烯改性TPU粉末填充至3D打印机的打印粉槽中,并通过3DP工艺按照设计的外底3模型打印出石墨烯改性TPU鞋底。
S4:将内底1、减震层2和外底3由上至下依次用EVA胶水加压粘合即可。
进一步的,步骤S1中,3D透气网布为由经线和纬线交织而成,经线和纬线均由涤纶线和竹炭纤维混合缠绕而成,经线包括中间线和侧线,中间线的两侧分别设有侧线,纬线间的二根经线相互交叉连接,中间线穿接过二根经线的交叉点,中间线和二根侧线相间隔分布;该方式制成的3D透气网布结构紧凑,强度提升,使用寿命延长;竹炭纤维是取毛竹为原料,采用了纯氧高温及氮气阻隔延时的煅烧新工艺和新技术,使得竹炭天生具有的微孔更细化和蜂窝化,然后再与具有蜂窝状微孔结构趋势的聚酯改性切片熔融纺丝而制成的,这种独特的纤维结构设计,具有吸湿透气、抑菌抗菌、冬暖夏凉、绿色环保等特点,提高了内底的功能性。
进一步的,步骤S1中,橡胶颗粒为丁睛橡胶依次经过破碎、绉片、造粒,得到预处理的丁睛橡胶颗粒;通过丁睛橡胶与聚氯乙烯共混后与EVA树脂进行合成,得到高级无臭的海绵橡胶,弹性好,环保性强。
进一步的,步骤S1中,发泡剂为二苯磺酰肼醚,二苯磺酰肼醚的热分解温度低,无需助发泡剂也能在通常的硫化温度下发泡,其热分解产物残渣是一个具有硫醇味的不挥发性聚合物,用它制成的海绵胶气孔结构细致均匀,渗透性小,能形成闭孔或联孔结构的海绵胶,孔眼不易塌陷,收缩率较小,变形亦较少。
进一步的,步骤S3中,石墨烯改性TPU粉末的制作方法为:用接枝法对石墨烯表面改性,再用还原法将氧化石墨烯均匀分散于TPU的溶液中,除去溶剂,制得粒径均匀形状一致的干燥的石墨烯改性TPU粉末。
进一步的,步骤S4中,EVA胶水以EVA树脂、水、正丁醇为主要成分协同水解桃胶和变性淀粉制成;该EVA胶水具有良好的强度,使用方便,在生产和使用过程中不会产生挥发性有毒物质,实现安全环保的效果;粘合时,粘合强度不小于3.0KN/m,能够避免鞋底易于脱胶的问题,通过添加水解桃胶与变性淀粉协同作用,能够显著提高粘合剂的粘合强度,并且还极大的提高了粘合剂的抑菌率,尤其是对白癣菌的抑制作用显著,从而能够避免脚气的产生,保障了穿鞋人脚步的健康安全,舒适性得到显著提高。
工作原理:本发明将鞋底设计成多层复合结构,分为内底1、减震层2和外底3,内底1主体采用记忆海绵材料,记忆海绵材料是一种具有开放式单元结构的聚氨酯高分子聚合物,该材料具有特殊的黏弹特性,体现很柔软的材料特性,并有很强的冲击能吸收能力;作为直接与人体脚部接触的部分,内底1的高柔软度增加了鞋底整体的舒适度;内底1上表面粘贴一层3D透气网布,结构紧凑,强度提升,使用寿命延长,与竹炭纤维结合,具有吸湿透气、抑菌抗菌、冬暖夏凉、绿色环保等特点,提高了内底1的功能性。
减震层2通过将EVA载体树脂、丁睛橡胶、聚氯乙烯混炼得到海绵橡胶,该海绵橡胶无臭,质轻、有弹性,具有防震、缓和冲击等作用,与减震层2的凸块4结构结合,具有优良的减震功能。制作过程中采用梯度式降温,有利于提高产品成型的稳定性。
外底3利用3D打印技术将石墨烯改性TPU粉末打印成型,工作效率高;具有优异的机械强度、耐磨性、耐油性和耐屈挠性,特别是耐磨性最为突出,石墨烯是已知强度最高的材料之一,同时还具有很好的韧性,且可以弯曲,石墨烯改性TPU粉末同时具备TPU和石墨烯的特点,可以同时达到耐磨止滑、除臭杀菌、导电导热等效果。
本发明利用不同材料的优势特点制作功能性不同的鞋底分层,不仅舒适度高,而且弹性和耐磨性好,在保证鞋底强度的同时具有高性能的弯折回弹性,使得鞋底的使用寿命长。
最后应说明的是:以上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 (7)

1.一种鞋底,其特征在于,包括内底(1)、减震层(2)和外底(3),所述减震层(2)中部为向上拱起的曲面结构,所述内底(1)沿减震层(2)的上表面的曲面结构粘贴固定,所述减震层(2)设置在内底(1)与外底(3)之间,所述减震层(2)与外底(3)相连的一面上间隔设置有若干凸块(4),所述凸块(4)与减震层(2)为一体成型结构,所述外底(3)上远离减震层(2)的一面上设置若干凹凸结构的防滑条(5),所述减震层(2)两端为向上弯曲翘起结构,所述减震层(2)将内底(1)两端包裹在弯曲翘起结构内。
2.一种鞋底的制作方法,其特征在于,包括如下步骤:
S1:制作内底(1):将记忆海绵根据内底(1)的尺寸和形状进行剪裁得到内底(1)的基底,在内底(1)的基底上表面粘贴一层3D透气网布得到内底(1);
S2:制作减震层(2):
S21:将EVA载体树脂、橡胶颗粒、聚氯乙烯、微纳米晶纤维素粒子、多孔粉石英、丙二酸二乙酯和马来酸二丁基锡混合后进行第一阶段密炼,控制温度为90-100℃,时间为10-15min,然后加入交联剂以及发泡剂,进行第二阶段密炼,控制温度为100-110℃,时间为10-12min;
S22:第二阶段密炼结束后注入注射装置相应的模具内,分别控制成型温度为80-90℃,成型压力为1.2-1.4MPa,成型时间为70-80s,冷却成型后开模,得到减震层(2)主体的预发泡底胚;
S23:将减震层(2)主体的预发泡底胚进行表面处理,称好重量后,平整放入发泡模具内的对应位置,控制好成型温度170-180℃、成型时间9-11min和真空度-0.06至-0.09MPa,进行发泡成型,得到带有凸块(4)的减震层(2)粗品;
S24:将减震层(2)粗品跳模后经过梯度降温、冷却定型、修边,得到减震层(2)基底,在减震层(2)基底上贴上一层透气织物得到减震层(2);
S3:制作外底(3):将适量的石墨烯改性TPU粉末填充至3D打印机的打印粉槽中,并通过3DP工艺按照设计的外底(3)模型打印出石墨烯改性TPU鞋底。
S4:将内底(1)、减震层(2)和外底(3)由上至下依次用EVA胶水加压粘合即可。
3.根据权利要求2所述的一种鞋底的制作方法,其特征在于,步骤S1中,3D透气网布为由经线和纬线交织而成,经线和纬线均由涤纶线和竹炭纤维混合缠绕而成,经线包括中间线和侧线,中间线的两侧分别设有侧线,纬线间的二根经线相互交叉连接,中间线穿接过二根经线的交叉点,中间线和二根侧线相间隔分布。
4.根据权利要求2所述的一种鞋底的制作方法,其特征在于,步骤S1中,橡胶颗粒为丁睛橡胶依次经过破碎、绉片、造粒,得到预处理的丁睛橡胶颗粒。
5.根据权利要求2所述的一种鞋底的制作方法,其特征在于,步骤S1中,发泡剂为二苯磺酰肼醚。
6.根据权利要求2所述的一种鞋底的制作方法,其特征在于,步骤S3中,石墨烯改性TPU粉末的制作方法为:用接枝法对石墨烯表面改性,再用还原法将氧化石墨烯均匀分散于TPU的溶液中,除去溶剂,制得粒径均匀形状一致的干燥的石墨烯改性TPU粉末。
7.根据权利要求2所述的一种鞋底的制作方法,其特征在于,步骤S4中,EVA胶水以EVA树脂、水、正丁醇为主要成分协同水解桃胶和变性淀粉制成。
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