WO2024044993A1 - 多色超临界发泡鞋体的制造方法、及多色发泡鞋体 - Google Patents

多色超临界发泡鞋体的制造方法、及多色发泡鞋体 Download PDF

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Publication number
WO2024044993A1
WO2024044993A1 PCT/CN2022/115977 CN2022115977W WO2024044993A1 WO 2024044993 A1 WO2024044993 A1 WO 2024044993A1 CN 2022115977 W CN2022115977 W CN 2022115977W WO 2024044993 A1 WO2024044993 A1 WO 2024044993A1
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Prior art keywords
foam
shoe
color
foam shoe
shoe body
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PCT/CN2022/115977
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English (en)
French (fr)
Inventor
陈怡良
王宝欣
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王宝欣
黄沂荣
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Priority to PCT/CN2022/115977 priority Critical patent/WO2024044993A1/zh
Publication of WO2024044993A1 publication Critical patent/WO2024044993A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/06—Making multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique

Definitions

  • the present invention relates to shoe material manufacturing technology, and particularly refers to a manufacturing method of multi-color supercritical foam shoe body and multi-color foam shoe body.
  • the traditional shoemaking industry when the traditional shoemaking industry produces multi-color shoe bodies, it mainly uses artificial gluing to glue shoe body parts of two different colors together. Since the aforementioned gluing technology requires the shoe body parts to be Chemical agents undergo complex surface treatment, and then the adhesive is applied to the surface of the shoe body parts for gluing, and then sent to a medium or high temperature conveyor belt oven to catalyze the agent to ensure the strength of the bond. It can be seen that the traditional multi-color The shoe body process requires a lot of labor costs. In addition, the chemicals used in the process are toxic and will harm human health for workers over a long period of time. The heat energy generated by the medium-high temperature conveyor belt oven causes a large amount of Carbon emissions, thereby causing environmental pollution.
  • Chinese invention patent publication number CN112662043A is an impact protection foam shoe material.
  • the process includes the step of injecting the preform, in which the prepared plastic pellets are poured into the injection molding machine to complete the injecting of the preform; the foaming step, in which the formed preform is placed in a supercritical foaming tank for physical foaming; In the molding step, after the small foamed semi-finished product is left to cool, it is pressed into a flat molding mold to complete the molding of the finished product to complete the foamed shoe material.
  • the aforementioned disclosed technology is to first perform supercritical foaming on the green body, and then perform hot pressing treatment to form foamed shoe materials. Since the foaming material in the green body has been supercritically foamed first, in the forming step, the aforementioned small The foamed waste generated during the molding process of foamed semi-finished products cannot be regenerated, and in the actual shoemaking industry, when a large amount of shoe materials are produced every day, the aforementioned foamed waste is produced in large quantities, which will cause environmental pollution problems. Pollution problems place a huge burden on the environment.
  • the object of the present invention is to provide a method for manufacturing a multi-color supercritical foam shoe body, and a multi-color foam shoe body, which uses a hot pressing method to first combine the plurality of preliminary blank models of different colors. are combined together to form the semi-finished shoe material, and then the semi-finished shoe material is subjected to supercritical foaming to obtain the multi-color foamed shoe body.
  • the manufacturing method providing a friendly processing environment for environmentally friendly processes, and the multi-color foam shoe body does not require additional processing after being made, so there will be no waste problems, which is in line with the concept of ESG sustainable management and can also improve the process yield. .
  • the invention provides a method for manufacturing multi-color supercritical foam shoe bodies, including the following steps: Step S1, providing multiple blank molds, and injecting multiple rubber and plastic foam materials of different colors respectively. method to fill the mold chambers of each of the preliminary blank molds, so that the plurality of preliminary blank molds can respectively produce multiple unfoamed preliminary blank models of different colors; step S2, put the plurality of preliminary blank models into Place it in a hot-pressing mold for hot-pressing bonding, so that the contact surfaces of the two adjacent preliminary blank models are combined together due to heating to form a semi-finished shoe material; and step S3, place the semi-finished shoe material It is foamed into a supercritical foaming device to obtain a multi-color foam shoe body.
  • the multi-color foam shoe body which is produced by supercritical foaming of a semi-finished shoe material, wherein the semi-finished shoe material is a plurality of preforms of different colors through hot pressing.
  • the multi-color foam shoe body includes a first foam shoe part and a second foam shoe part.
  • the first foam shoe component has a first bonding surface;
  • the second foam shoe component has a second bonding surface, and the second bonding surface and the first bonding surface are combined with each other to form one body.
  • the effect of the present invention is that the manufacturing method of the multi-color supercritical foam shoe body of the present invention uses hot pressing to first combine the plurality of preliminary blank models of different colors.
  • the plurality of preliminary blank models are When the blank model is heated in the hot pressing mold, the molecular structure in each of the blank models is thermally cracked due to the heating, causing two adjacent blank models to generate molecular cross-linking and combine with each other into one body.
  • the semi-finished shoe material is formed, and then the semi-finished shoe material is supercritically foamed to obtain the multi-color foamed shoe body.
  • the manufacturing method of this embodiment saves the cost of existing manpower to apply adhesive and provides environmental protection.
  • the process is friendly to the processing environment, and the multi-color foam shoe body does not require additional processing after being made, so there will be no waste problems. It is in line with the concept of ESG sustainable management and can also improve the process yield.
  • the color of the multi-color foam shoe body produced by the process can further produce shoe materials of more than two colors, thereby improving the color diversity of the multi-color foam shoe body and making the multi-color foam shoe body more colorful.
  • the overall visual effect of the body is more beautiful, and it also allows users to interact with each other in terms of physical properties and functionality.
  • Figure 1 is a step flow chart of a method for manufacturing a multi-color supercritical foam shoe body according to a preferred embodiment of the present invention.
  • Figure 2 is a structural diagram of a rough model of the first preferred embodiment of the present invention.
  • Fig. 3 is a schematic cross-sectional view of the blank model inserted into the hot pressing mold according to the first preferred embodiment of the present invention.
  • Figure 4 is a schematic cross-sectional view of the hot pressing mold for mold closing and hot pressing according to the first preferred embodiment of the present invention.
  • Figure 5 is a structural diagram of a multi-color foam shoe body according to the first preferred embodiment of the present invention.
  • FIG. 6 is a cross-sectional view taken along the section line 6-6 in FIG. 5 .
  • Figure 7 is a structural diagram of a multi-color foam shoe body according to the second preferred embodiment of the present invention.
  • Figure 8 is a bottom view of the multi-color foam shoe body according to the second preferred embodiment of the present invention.
  • FIG. 9 is a cross-sectional view taken along section line 9-9 in FIG. 7 .
  • FIG. 10 is a cross-sectional view taken along section line 10-10 in FIG. 7 .
  • Figure 1 provides a manufacturing method for a multi-color supercritical foam shoe body according to the present invention, which includes the following steps:
  • Step S1 Provide multiple preliminary molds (not shown in the figure), and fill the mold chambers of each of the preliminary molds with multiple rubber and plastic foam materials of different colors by injection. After the foam material is solidified and formed, the foam material is demoulded and taken out from each of the preliminary molds, so that the plurality of preliminary molds can produce multiple unfoamed preliminary models 10 of different colors.
  • the plurality of preliminary molds 10 are injection molded using the same rubber-plastic foam material, which includes ethylene-vinyl acetate copolymer (EVA), synthetic rubber (Synthetic Rubber), polyurethane (PU) ), thermoplastic polyurethane (TPU), PEBAX, polyolefin thermoplastic elastomer (TPV), thermoplastic polyester elastomer (TPEE), thermoplastic polyamide elastomer (TPAE), polyolefin elastomer (POE), polypropylene (PP ), polyethylene (PE), acrylonitrile-butadiene-styrene copolymer (ABS), styrene-butadiene rubber (SBR), polyethylene terephthalate (PET), thermoplastic elastomer (TPE) A kind of foaming material in the group.
  • the rubber-plastic foaming material can be selected from ethylene-vinyl acetate copolymer (EVA),
  • each of the rubber and plastic foaming materials is injection molded under the condition that the screw temperature is lower than 130°C, and the output of the injection pressure of each of the rubber and plastic foaming materials is controlled during the injection process.
  • the injected rubber and plastic foaming material can be uniformly distributed in the mold chamber of the preliminary mold (not shown in the figure) and solidified to form the preliminary mold 10, wherein the preliminary mold 10 can be a shoe upper preliminary.
  • the model, the sole rough model, the foot bed rough model, the sole flower rough model and the shoe body rough model have multiple types, as shown in Figure 2.
  • the plurality of rough models The model 10 is illustrated using the upper rough model 11 and the sole rough model 12 .
  • each of the preliminary molds 10 of the present invention is an unfoamed molded body.
  • the plurality of preliminary molds 10 can be designed with the same color and the same physical properties, or a variety of different colors and different physical properties according to the needs of use.
  • the hardness of the plurality of preliminary blank models 10 is designed to differ by less than 40 degrees.
  • the hardness of the sole preliminary blank model 12 is greater than the hardness of the shoe upper preliminary blank model 11, so that the The foamed multi-color foam shoe body 30 has multi-functional characteristics, making the user more comfortable to wear and more stable in walking.
  • Step S2 Place the plurality of preliminary blank models 10 into a hot pressing mold 100 for hot pressing molding, so that the contact surfaces of two adjacent preliminary blank models 10 are combined together due to heat to form a shoe.
  • Semi-finished products more specifically, as shown in Figures 2 and 3, when the plurality of preliminary blank models 10 are actually hot-pressed, the sole preliminary blank models 12 are first placed into one part of the hot-pressing mold 100.
  • the shoe upper rough model 11 is disposed on an inner mold 120 of the hot pressing mold 100; and when the hot pressing mold 100 is closed, an upper mold 130 of the hot pressing mold 100
  • the inner core 120 of the mold is driven toward the lower mold 110 so that the bottom surface of the shoe upper rough model 11 contacts the shoe sole rough model 12 to connect the shoe upper rough model 11 with the shoe upper rough model 11 .
  • the shoe sole preliminary model 12 is accommodated in the mold chamber formed between the mold inner core 120 and the upper mold 130 and the lower mold 110 .
  • the upper rough model 11 and the sole rough model 12 are made of the same rubber-plastic foam material for injection molding, as described in this embodiment
  • the rubber and plastic foaming material is ethylene-vinyl acetate copolymer (EVA) as an illustration. Therefore, the upper rough model 11 and the sole rough model 12 are heated in the mold chamber, so that the shoes The molecular structures in the upper rough model 11 and the sole rough model 12 are thermally decomposed due to heating, and the two adjacent upper rough models 11 and the sole rough models 12 produce molecular cross-linking.
  • EVA ethylene-vinyl acetate copolymer
  • the plurality of preliminary molds 10 may also be made of different rubber and plastic foam materials, but this may affect the hot-pressing bonding effect of the plurality of preliminary molds 10 .
  • the temperature of the hot pressing mold 100 ranges from 130 to 180°C, and the hot pressing time ranges from 100 to 800 seconds, but the temperature and time of the hot pressing mold 100 are not limited thereto.
  • the conditions of the hot-pressing mold 100 can be adjusted depending on the characteristics of the rubber-plastic foam material, as long as the temperature and time conditions of the hot-pressing mold 100 can make the rubber-plastic foam material in each preliminary model 10 Just reach the softening temperature.
  • Step S3 then put the aforementioned semi-finished shoe material into a supercritical foaming device (not shown) for foaming molding to obtain a multi-color foamed shoe body 30, wherein the supercritical foaming device is filled with There is supercritical fluid.
  • the supercritical foaming device is heated and pressurized so that the supercritical fluid penetrates into the semi-finished shoe material.
  • the supercritical foaming device After a period of time, the supercritical foaming device generates pressure relief, so that the semi-finished shoe material is physically foamed, that is, the multi-color foamed shoe body 30 is formed; specifically, the semi-finished shoe material is The supercritical foaming process will cause the semi-finished shoe material to foam into a curved foaming intermediate product (not shown in the figure) due to the difference in the foaming ratio of each of the preliminary blank models 10.
  • the multi-color foamed shoe body 30 can be formed by cooling the foamed intermediate product back to molding.
  • the semi-finished shoe material can be formed into the shape of the multi-color foamed shoe body 30 at one time after supercritical foaming.
  • the multi-color foam shoe body 30 of the first preferred embodiment is made from the semi-finished shoe material by supercritical foaming using the method of the previous embodiment, and the semi-finished shoe material
  • the plurality of blank models 10 of the aforementioned different colors are combined by hot pressing, and the multi-color foam shoe body 30 can be one of a shoe outsole, slippers and bag shoes; as shown in Figure 5
  • the multi-color foam shoe body 30 of the first embodiment is illustrated with two-color slippers.
  • the multi-color foam shoe body 30 includes a first foam shoe part 31 and a second foam shoe part. 32.
  • the first foam shoe part 31 is the upper of the multi-color foam shoe body 30, and the second foam shoe part 32 is the sole of the multi-color foam shoe body 30, wherein the The bottom of the first foam shoe component 31 has a first bonding surface 311, and the top of the second foam shoe component 32 has a second bonding surface 321.
  • the second bonding surface 321 and the first bonding surface 311 are combined with each other into one body, so that there is no existing chemical adhesive between the second bonding surface 321 and the first bonding surface 311, that is, the first foam in the multi-color foam shoe body 30
  • the shoe part and the second foam shoe part are integrated together, and from the outer peripheral surface of the multi-color foam shoe body 30, it can be clearly seen that the first foam shoe part 31 and the second foam shoe part 31 are
  • the two foam shoe parts 32 each present a different color; in addition, the hardness of the first foam shoe part 31 and the second foam shoe part 32 of the multi-color foam shoe body 30 in this embodiment differs by 40 degrees.
  • the hardness of the second foam shoe component 32 is greater than the hardness of the first foam shoe component 31. Since the upper area is made of special soft material to achieve the Q-soft effect, the ground contact surface is made of special hard material to achieve the Q-soft effect.
  • the anti-slip and wear-resistant effect makes users more comfortable and stable when walking.
  • FIG. 7 to 10 illustrate a multi-color foam shoe body 40 provided by a second preferred embodiment of the present invention.
  • the multi-color foam shoe body 40 described in the second embodiment is a four-color sports shoe outsole.
  • the multi-color foamed shoe body 40 is also made from a semi-finished shoe material through supercritical foaming.
  • the semi-finished shoe material is made from the plurality of preliminary blank models in four different colors.
  • the multi-color foam shoe body 40 includes a first foam shoe part 41, a second foam shoe part 42, A third foam shoe part 43 and a fourth foam shoe part 44, wherein the first foam shoe part 41 is the footbed of the multi-color foam shoe body 40, and the second foam shoe part 42 represents the sole of the multi-color foam shoe body 40, and the third foam shoe part 43 and the fourth foam shoe part 44 are the bottom patterns of the multi-color foam shoe body 40, that is, the The third foam shoe part 43 and the fourth foam shoe part 44 are respectively combined at the bottom of the second foam shoe part 42, and the fourth foam shoe part 44 and the third foam shoe part 43 are arranged adjacent to each other (see Figure 8).
  • the bottom of the first foam shoe part 41 has a first joining surface 411, and the second foam shoe part 41 has a first joint surface 411.
  • the top of the component 42 has a second bonding surface 421, and the second bonding surface 421 and the first bonding surface 411 are combined into one body, so that the first foamed shoe component 41 is bonded to the second foamed shoe component 42.
  • the bottom of the shoe component 42 is provided with a receptacle 423.
  • the bottom of the receptacle 423 has a fifth joining surface 422.
  • the third foam shoe component 43 and the fourth foam shoe component 44 are respectively provided at the bottom.
  • the third coupling surface 431 and the fourth coupling surface 441 are respectively combined with the fifth coupling surface 422 to form one body, so that the third coupling surface 431 and the fourth coupling surface 441 of the multi-color foam shoe body 40 are integrated with each other.
  • a foam shoe part 41, the second foam shoe part 42, the third foam shoe part 43 and the first foam shoe part 44 are integrated together, so that the multi-color
  • the foam shoe body 40 is a shoe outsole with four uniform colors as a whole.
  • the colors of the multi-color foam shoe body 40 are diverse, making the overall visual effect more beautiful, and the multi-color foam shoe body 40 40 can also be designed with multi-function and multi-density characteristics as required; in other embodiments, the multi-color foam shoe body 40 can also omit the third foam shoe component 43 and the fourth foam shoe component One of 44, the multi-color foam shoe body 40 is designed as a three-color sports shoe outsole, or the third foam shoe component 43 and the fourth foam shoe component 44 are omitted, as long as The multi-color foam shoe body 40 can have at least two colors.
  • the manufacturing method of the multi-color supercritical foam shoe body of the present invention is to first combine the plurality of preliminary blank models 10 of different colors by using hot pressing.
  • the blank models 10 are made of the same rubber-plastic foam material.
  • the plurality of blank models 10 are heated in the hot pressing mold 100, the molecular structure of each blank model 10 is heated. Thermal cracking is generated, causing the two adjacent preliminary blank models 10 to generate molecular cross-linking and combine with each other to form a semi-finished shoe material.
  • the semi-finished shoe material is then supercritically foamed to obtain the multi-color hair. Soak the shoe body 30, 40.
  • the manufacturing method of the multi-color supercritical foam shoe body described in this embodiment not only saves the existing labor cost of applying adhesive, but also the plurality of preliminary blank models 10 are produced during the hot pressing process in step S2.
  • the waste material is an unfoamed product, so it can be recycled again to make the rubber and plastic foaming material, which can effectively reduce the non-recyclable waste generated by the manufacturing method of the multi-color supercritical foam shoe body, and provide an environmentally friendly process It is friendly to the processing environment, and the multi-color foam shoe bodies 30 and 40 do not require additional processing after being made, so there is no waste problem. It is fully in line with the concept of ESG sustainable management and can also improve the quality of the overall manufacturing process. Rate.
  • the multi-color foam shoe bodies 30 and 40 are formed by completing physical foaming at one time, in which two adjacent foam shoe parts are firmly combined by molecular cross-linking without any chemical substances, resulting in the multi-color foam shoe body
  • the multi-color foam shoe body 30, 40 can be recycled to achieve environmental benefits; in addition, in the second embodiment, the multi-color foam shoe body 40 can be further produced into three or four colors.
  • the shoe material enhances the color and functional diversity of the multi-color foam shoe body 40, making the overall visual effect of the multi-color foam shoe body 40 more beautiful, and the application of different color blocks with different physical properties can Let the shoe body achieve multiple applications in terms of appearance, comfort, and functionality.

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  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

一种多色超临界发泡鞋体的制造方法及鞋体结构，包括步骤S1，提供多个初坯模具，将不同颜色的多个橡塑发泡材料分别以射出方式填充在各所述初坯模具的模室中，以使所述多个初坯模具分别制得不同颜色的多个未发泡的初坯模型(10)；步骤S2，将所述多个初坯模型(10)置入于一热压模具(100)中进行热压，以使两个相邻初坯模型(10)的相接触面因受热而结合在一起，形成一鞋材半成品；步骤S3，将所述鞋材半成品置入一超临界发泡装置中发泡成型，以获取一多色发泡鞋体(30)。

Description

多色超临界发泡鞋体的制造方法、及多色发泡鞋体 技术领域
本发明与鞋材制程技术有关，特别指一种多色超临界发泡鞋体的制造方法，及多色发泡鞋体。
背景技术
随着鞋体流行趋势，近年来鞋材的开发着重在鞋体颜色与性能的多样性的设计，能让消费者依据个人风格选择符合自己喜好的多色鞋材。
然而，传统制鞋业在生产多色鞋体时，主要是利用人工胶粘方式，将两种不同颜色的鞋体部件胶粘在一起，由于前述胶粘技术需先对所述鞋体部件以化学药剂进行繁复的表面处理，再将粘着剂涂布在所述鞋体部件表面上进行胶粘，并送入中温或高温的输送带烘箱来催化药剂以保证接着的强度，可见传统的多色鞋体制程需要耗费大量的人力成本，除此之外，制程中所使用的化学药剂具有毒性，长时间下来对工作人员来说会危害人体健康，中高温的输送带烘箱产生的热能造成大量的碳排放，进而造成环境污染。
有相关制鞋业者为了改善传统多色鞋体制程的缺失，利用超临界发泡技术来制成多色鞋体，如中国发明专利公开号CN112662043A，是一种冲击力防护发泡鞋材，其制程包含射初坯步骤，将造好的塑料粒倒入注塑成型机内，以完成射初坯；发泡步骤，将成型好的初坯，放入超临界发泡罐内进行物理发泡；成型步骤，将小发泡的半成品静置冷却后，将其压入平板模压模具中，完成成品模压，以完成发泡鞋材。
前述公开技术是先将初坯进行超临界发泡，再进行热压处理形成发泡鞋材，由于初坯当中的发泡材料已先进行超临界发泡，因而所述成型步骤中，前述小发泡的半成品在模压成型过程所产生发泡废弃物无法进行再生处理，且在实际制鞋业中，每天生产大量鞋材情况下同时大量产生前述发泡废弃物会造成环境污染的问题，如此污染问题给环境带来巨大负担。
综上可知，目前多色发泡鞋体的制法仍未臻完善，尚有待改进之处。
发明内容
有鉴于此，本发明的目的在于提供一种多色超临界发泡鞋体的制造方法，及多色发泡鞋体，是利用热压方式先将不同颜色的所述多个初坯模型相结合在一起，形成所述鞋材半成品，再将所述鞋材半成品利用超临界发泡，获得所述多色发泡鞋体，如此所述制造方法除了节省现有人力涂设粘着剂的成本，提供环保制程的友善加工环境，且制成后所述多色发泡鞋体不需额外加工处理，借以不会有废料的问题产生，符合ESG永续经营的理念，更可提高制程良 率。
缘以达成上述目的，本发明提供的多色超临界发泡鞋体的制造方法，包括下列步骤：步骤S1，提供多个初坯模具，将不同颜色的多个橡塑发泡材料分别以射出方式填充在各所述初坯模具的模室中，以使所述多个初坯模具分别制得不同颜色的多个未发泡的初坯模型；步骤S2，将所述多个初坯模型置入于一热压模具中进行热压结合，以使两个相邻初坯模型的相接触面因受热而结合在一起，形成一鞋材半成品；以及步骤S3，将所述鞋材半成品置入一超临界发泡装置中发泡成型，以获取一多色发泡鞋体。
本发明又一实施例提供一种多色发泡鞋体，是由一鞋材半成品经超临界发泡所制得，其中所述鞋材半成品为不同颜色的多个初坯模型通过热压方式结合而成，所述多色发泡鞋体包含一第一发泡鞋部件及一第二发泡鞋部件。所述第一发泡鞋部件具有一第一结合面；所述第二发泡鞋部件具有一第二结合面，所述第二结合面与所述第一结合面彼此结合为一体。
本发明的效果在于，本发明所述多色超临界发泡鞋体的制造方法，是利用热压方式先将不同颜色的所述多个初坯模型相结合在一起，当所述多个初坯模型在所述热压模具中受加热作用时，各所述初坯模型当中的分子结构因受热而生成热裂解，使得两个相邻初坯模型产生分子交联作用而彼此结合为一体，形成所述鞋材半成品，再将所述鞋材半成品利用超临界发泡，获得所述多色发泡鞋体，如此本实施例的制造方法节省现有人力涂设粘着剂的成本，提供环保制程的友善加工环境，且制成后所述多色发泡鞋体不需额外加工处理，借以不会有废料的问题产生，符合ESG永续经营的理念，更可提高制程良率。
此外，制程出的所述多色发泡鞋体的色彩还可进一步制得两种颜色以上的鞋材，提升所述多色发泡鞋体的色彩多样性，让所述多色发泡鞋体整体视觉效果更为美感，也让使用者在物性及功能性可交互搭配应用。
附图说明
图1是本发明一优选实施例的多色超临界发泡鞋体的制造方法的步骤流程图。
图2是本发明第一优选实施例的初坯模型的结构图。
图3是本发明第一优选实施例的初坯模型置入热压模具剖面示意图。
图4是本发明第一优选实施例的热压模具进行合模热压的剖面示意图。
图5是本发明第一优选实施例的多色发泡鞋体的结构图。
图6是图5沿剖面线6-6方向所得的剖面图。
图7是本发明第二优选实施例的多色发泡鞋体的结构图。
图8是本发明第二优选实施例的多色发泡鞋体的底视图。
图9是图7沿剖面线9-9方向所得的剖面图。
图10是图7沿剖面线10-10方向所得的剖面图。
具体实施方式
为能更清楚地说明本发明，兹举优选实施例并配合附图详细说明如后。请参考图1，为本发明提供一种多色超临界发泡鞋体的制造方法，包括下列步骤：
步骤S1，提供多个初坯模具(图中未示)，将不同颜色的多个橡塑发泡材料分别以射出方式填充在各所述初坯模具的模室中，各所述橡塑发泡材料固化成型后从各所述初坯模具脱模取出，以使所述多个初坯模具分别制得不同颜色的多个未发泡的初坯模型10；具体说明，在本实施例中，所述多个初坯模型10是使用相同所述橡塑发泡材料射出成型，所述橡塑发泡材料包含乙烯-醋酸乙烯共聚物(EVA)、合成橡胶(Synthetic Rubber)、聚氨酯(PU)、热塑性聚氨酯(TPU)、PEBAX、聚烯烃类热塑性弹性体(TPV)、热塑性聚酯弹性体(TPEE)、热塑性聚酰胺弹性体(TPAE)、聚烯烃弹性体(POE)、聚丙烯(PP)、聚乙烯(PE)、丙烯腈-丁二烯-苯乙烯共聚物(ABS)、丁苯橡胶(SBR)、聚对苯二甲酸乙二酯(PET)、热塑性弹性体(TPE)所构成群组中的一种发泡材料，在一优选实施例中，所述橡塑发泡材料可选用乙烯-醋酸乙烯共聚物(EVA)、热塑性聚氨酯(TPU)及热塑性弹性体(TPE)中的一种发泡材料。
所述步骤S1在实际制程上，各所述橡塑发泡材料是控制在螺杆温度低于130℃的条件下射出成型，且各所述橡塑发泡材料在射出过程控制射出压力的输出，而能使射出的橡塑发泡材料均匀分布在所述初坯模具(图中未示)的模室中固化形成所述初坯模型10，其中所述初坯模型10可为鞋面初坯模型、鞋底初坯模型、脚床初坯模型、底花初坯模型及鞋体初坯模型多个多种型态，如图2所示，在第一实施例中，所述多个初坯模型10是以所述鞋面初坯模型11及所述鞋底初坯模型12作为说明。
特别说明地，本发明各所述初坯模型10是未发泡成型体，所述多个初坯模型10可依使用需求选择设计相同颜色及相同物理特性，或者多种不同颜色及不同物理特性，在本实施例中，所述多个初坯模型10彼此间硬度是设计相差40度以下，例如，所述鞋底初坯模型12的硬度大于所述鞋面初坯模型11的硬度，使得发泡后的多色发泡鞋体30具有多功能的特性，让使用者在穿戴上更为舒适且行走较为稳健。
步骤S2，将所述多个初坯模型10置入于一热压模具100中进行热压成型，以使两个相邻初坯模型10的相接触面因受热而结合在一起，形成一鞋材半成品；更具体说明，如图2、3所示，当所述多个初坯模型10在实际热压时，是先将所述鞋底初坯模型12置入所述热压模具100的一下模具110中，所述鞋面初坯模型11设置在所述热压模具100的一模具内仁120上；且在所述热压模具100闭合时，所述热压模具100的一上模具130带动所述模具内仁120朝所述下模具110方向密合，使得所述鞋面初坯模型11的底面接触所述鞋底初坯模型12上，以将所述鞋面初坯模型11与所述鞋底初坯模型12容置在所述模具内仁120与所述上模具130及所述下模具110之间所形成的所述模室中。
当所述热压模具100在热压过程中，由于所述鞋面初坯模型11与所述鞋底初坯模型12是选用相同所述橡塑发泡材料射出成型，在本实施例中所述橡塑发泡材料是选用乙烯-醋酸乙烯共聚物(EVA)作为说明，因而所述鞋面初坯模型11及所述鞋底初坯模型12在所述模室 中受加热作用，使得所述鞋面初坯模型11及所述鞋底初坯模型12当中的分子结构因受热而生成热裂解，且两个相邻所述鞋面初坯模型11与所述鞋底初坯模型12产生分子交联作用，以致所述鞋面初坯模型11及所述鞋底初坯模型12的相接触面彼此结合为一体，制得双色所述鞋材半成品(图中未示)；在其他实施例中，所述多个初坯模型10亦可选用彼此互不相同的所述橡塑发泡材料，只是可能会影响所述多个初坯模型10的热压结合效果。
另外，本实施例中所述热压模具100的温度介于130～180℃，热压时间介于100～800秒，但所述热压模具100的温度及时间不以此为限，所述热压模具100的条件可视所述橡塑发泡材料的特性有所调整，只要所述热压模具100的温度及时间条件能够让各所述初坯模型10当中所述橡塑发泡材料达到软化温度即可。
步骤S3，接着将前述鞋材半成品置入一超临界发泡装置(图中未示)中发泡成型，以获取一多色发泡鞋体30，其中所述超临界发泡装置中充入有超临界流体，当所述鞋材半成品置入所述超临界发泡装置时，对所述超临界发泡装置内进行加热加压，使所述超临界流体渗入所述鞋材半成品中，经过一段时间后，所述超临界发泡装置产生泄压，以使所述鞋材半成品产生物理发泡，即形成所述多色发泡鞋体30；特别说明地，所述鞋材半成品在超临界发泡过程，会因各所述初坯模型10发泡倍率之间差异，使得所述鞋材半成品发泡成弯曲型态的一发泡中间产物(图中未示)，待所述发泡中间产物冷却回塑即能形成所述多色发泡鞋体30，但在其他实施例中，若所述鞋材半成品当中所述多个初坯模型10的发泡倍率均为相同，因而所述鞋材半成品在超临界发泡后即能一次形成所述多色发泡鞋体30的型态。
请参考图5～6，是第一优选实施例的所述多色发泡鞋体30利用前述实施例的方法由所述鞋材半成品经超临界发泡所制得，且所述鞋材半成品为前述不同颜色的所述多个初坯模型10借由热压方式结合而成，其中所述多色发泡鞋体30可为鞋大底、拖鞋及包鞋中的一种；如图5所示，本第一实施例所述多色发泡鞋体30是以双色拖鞋作为说明，所述多色发泡鞋体30包含一第一发泡鞋部件31以及一第二发泡鞋部件32，所述第一发泡鞋部件31是所述多色发泡鞋体30的鞋面，所述第二发泡鞋部件32是所述多色发泡鞋体30的鞋底，其中所述第一发泡鞋部件31的底部具有一第一结合面311，所述第二发泡鞋部件32的顶部具有一第二结合面321，所述第二结合面321与所述第一结合面311彼此结合为一体，是以所述第二结合面321与所述第一结合面311之间不具有现有化学粘着剂，即所述多色发泡鞋体30当中所述第一发泡鞋部件与所述第二发泡鞋部件为一体结合在一起，且从所述多色发泡鞋体30的外周面观察，能明显看出所述第一发泡鞋部件31与所述第二发泡鞋部件32各自呈现不同颜色；此外，本实施例所述多色发泡鞋体30当中所述第一发泡鞋部件31与所述第二发泡鞋部件32的硬度相差40度以下，是所述第二发泡鞋部件32的硬度大于所述第一发泡鞋部件31的硬度，由于鞋面区域为特殊软质料达到Q软效果，接地面处为特殊硬质料并达到防滑耐磨效果，让使用者在行走时更为舒适与稳健。
另外，请参考图7至10，是本发明第二优选实施例提供的多色发泡鞋体40，本第二实施例所述多色发泡鞋体40是四色运动鞋大底，所述多色发泡鞋体40同样是由鞋材半成品经超 临界发泡所制得，在本第二实施例中，所述鞋材半成品是以四种不同颜色的所述多个初坯模型(图中未示)借由前述热压方式结合而成，其中所述多个初坯模型包含脚床初坯模型、所述鞋底初坯模型及两种底花初坯模型，所述多色发泡鞋体40的制造方法在此不再赘述；如图7～10所示，所述多色发泡鞋体40包含一第一发泡鞋部件41、一第二发泡鞋部件42、一第三发泡鞋部件43及一第四发泡鞋部件44，其中所述第一发泡鞋部件41是所述多色发泡鞋体40的脚床，所述第二发泡鞋部件42是所述多色发泡鞋体40的鞋底，所述第三发泡鞋部件43与所述第四发泡鞋部件44是所述多色发泡鞋体40的底花，即所述第三发泡鞋部件43与所述第四发泡鞋部件44分别结合在所述第二发泡鞋部件42底部，且所述第四发泡鞋部件44与所述第三发泡鞋部件43彼此相邻设置(参图8)。
还具体说明所述多色发泡鞋体40的细部结构，如图9、10所示，所述第一发泡鞋部件41的底部具有一第一结合面411，所述第二发泡鞋部件42的顶部具有一第二结合面421，所述第二结合面421与所述第一结合面411彼此结合为一体，使得所述第一发泡鞋部件41结合在所述第二发泡鞋部件42上方；所述第三发泡鞋部件43的顶部具有一第三结合面431，所述第四发泡鞋部件44的顶部具有一第四结合面441，而所述第二发泡鞋部件42的底部设有一容槽423，所述容槽423的槽底具有一第五结合面422，所述第三发泡鞋部件43与所述第四发泡鞋部件44分别设于所述容槽423中，且所述第三结合面431及所述第四结合面441分别与所述第五结合面422彼此结合为一体，以致所述多色发泡鞋体40当中所述第一发泡鞋部件41、所述第二发泡鞋部件42、所述第三发泡鞋部件43及所述第一发泡鞋部件44为一体结合在一起，如此一来，所述多色发泡鞋体40为整体呈现四种色彩均匀的鞋大底，所述多色发泡鞋体40的色彩具备多样性，使其整体视觉效果更为美感，且所述多色发泡鞋体40亦可视需求设计多功能及多密度的特性；在其他实施例中，所述多色发泡鞋体40亦可省略所述第三发泡鞋部件43与所述第四发泡鞋部件44中的一者，将所述多色发泡鞋体40设计成三色运动鞋大底，或者将所述第三发泡鞋部件43与所述第四发泡鞋部件44省略设置，只要所述多色发泡鞋体40至少两种颜色即可。
借由本发明的设计，本发明所述多色超临界发泡鞋体的制造方法，是利用热压方式先将不同颜色的所述多个初坯模型10相结合在一起，由于各所述初坯模型10是选用相同所述橡塑发泡材料，当所述多个初坯模型10在所述热压模具100中受加热作用时，各所述初坯模型10当中的分子结构因受热而生成热裂解，使得两个相邻初坯模型10产生分子交联作用而彼此结合为一体，形成所述鞋材半成品，再将所述鞋材半成品利用超临界发泡，获得所述多色发泡鞋体30、40。
如此，本实施例所述多色超临界发泡鞋体的制造方法，除了节省现有人力涂设粘着剂的成本，且在步骤S2当中所述多个初坯模型10在热压过程所产生的废料为未发泡产物，因而能再次回收制成所述橡塑发泡材料，能有效地减少所述多色超临界发泡鞋体的制造方法产生不可回收的废弃物，提供环保制程的友善加工环境，且制成后所述多色发泡鞋体30、40不需额外加工处理，借以不会有废料的问题产生，完全符合ESG永续经营的理念，更可提高整体 制程的良率。
此外，所述多色发泡鞋体30、40经由一次性完成物理发泡而成型，当中两个相邻发泡鞋部件利用分子交联作用而稳固结合，不具任何化学物质，致使所述多色发泡鞋体30、40能回收利用以达到环保的效益；除此之外，在第二实施例中，所述多色发泡鞋体40还可进一步制得三种及四种颜色的鞋材，提升所述多色发泡鞋体40的色彩与功能多样性，让所述多色发泡鞋体40整体视觉效果更为美观，且以不同色块搭配不同物性特质的应用，能让鞋体在外观、舒适性、功能性达到多重应用的目的。
以上所述仅为本发明优选可行实施例而已，举凡应用本发明说明书及申请专利范围所为的等效变化，理应包含在本发明的专利范围内。
附图标记说明
[本发明]
100：热压模具
110：下模具
111：模穴
120：模具内仁
130：上模具
10：初坯模型
11：鞋面初坯模型
12：鞋底初坯模型
30、40：多色发泡鞋体
31、41：第一发泡鞋部件
311、411：第一结合面
32、42：第二发泡鞋部件
321、421：第二结合面
422：第五结合面
423：容槽
43：第三发泡鞋部件
431：第三结合面
44：第四发泡鞋部件
441：第四结合面
S1～S3：步骤

Claims (17)

  1. 一种多色超临界发泡鞋体的制造方法，包括下列步骤：
    步骤S1，提供多个初坯模具，将不同颜色的多个橡塑发泡材料分别以射出方式填充在各所述初坯模具的模室中，以使所述多个初坯模具分别制得不同颜色的多个未发泡的初坯模型；
    步骤S2，将所述多个初坯模型置入于一热压模具中进行热压，以使两个相邻初坯模型的相接触面因受热而结合在一起，形成一鞋材半成品；以及
    步骤S3，将所述鞋材半成品置入一超临界发泡装置中发泡成型，以获取一多色发泡鞋体。
  2. 如权利要求1所述的多色超临界发泡鞋体的制造方法，其中，在所述步骤S2中，各所述初坯模型是使用相同所述橡塑发泡材料射出成型，当所述热压模具在热压过程，当所述热压模具在热压过程，所述多个初坯模型在所述热压模具中受加热作用，使得各所述初坯模型当中的分子结构因受热而生成热裂解，且两个相邻初坯模型产生分子交联作用，以致两个相邻初坯模型的相接触面彼此结合为一体，制得所述鞋材半成品。
  3. 如权利要求2所述的多色超临界发泡鞋体的制造方法，其中，在所述步骤S2中，所述热压模具的温度设定介于130～180℃，热压时间介于10～800秒。
  4. 如权利要求1或2所述的多色超临界发泡鞋体的制造方法，其中，在所述步骤S2中，所述鞋材半成品包含鞋面初坯模型、鞋底初坯、脚床初坯模型、底花初坯模型及鞋体初坯模型所组成的群组。
  5. 如权利要求1或2所述的多色超临界发泡鞋体的制造方法，其中，在所述步骤S2中，所述多个初坯模型包含一鞋面初坯模型及一鞋底初坯模型，将所述鞋底初坯模型置入所述热压模具的一下模具中，所述鞋面初坯模型设置在所述热压模具的一模具内仁上；当所述热压模具进行合模时，所述热压模具的一上模具带动所述模具内仁朝所述下模具方向密合，使得所述鞋面初坯模型的底面与所述鞋底初坯模型的顶面相接触，且将所述鞋面初坯模型与所述鞋底初坯模型容置在所述模具内仁与所述上模具及所述下模具之间所形成的所述模室中。
  6. 如权利要求1所述的多色超临界发泡鞋体的制造方法，其中，在所述步骤S1中，各所述橡塑发泡材料是控制在螺杆温度低于130℃的条件下射出。
  7. 如权利要求1所述的多色超临界发泡鞋体的制造方法，其中，在所述步骤S1中，所述橡塑发泡材料包含乙烯-醋酸乙烯共聚物、合成橡胶、聚氨酯、热塑性聚氨酯、PEBAX、聚 烯烃类热塑性弹性体、热塑性聚酯弹性体、热塑性聚酰胺弹性体、聚烯烃弹性体、聚丙烯、聚乙烯、丙烯腈-丁二烯-苯乙烯共聚物、丁苯橡胶、聚对苯二甲酸乙二酯、热塑性弹性体所构成群组中的一种发泡材料。
  8. 如权利要求1所述的多色超临界发泡鞋体的制造方法，其中，所述橡塑发泡材料包含乙烯-醋酸乙烯共聚物、热塑性聚氨酯、热塑性弹性体所构成群组中的一种发泡材料。
  9. 如权利要求1所述的多色超临界发泡鞋体的制造方法，其中，在所述步骤S1中，所述多个初坯模型彼此间硬度相差40度以下。
  10. 如权利要求1所述的多色超临界发泡鞋体的制造方法，其中，在所述步骤S3中，所述超临界发泡装置中充入有超临界流体，当所述鞋材半成品置入所述超临界发泡装置时，对所述超临界发泡装置内进行加热加压，使所述超临界流体渗入所述鞋材半成品中，经过一段时间后，所述超临界发泡装置产生泄压，使所述鞋材半成品发泡形成所述多色发泡鞋体。
  11. 一种多色发泡鞋体，是由一鞋材半成品经超临界发泡所制得，其中，所述鞋材半成品为不同颜色的多个初坯模型借由热压方式结合而成，所述多色发泡鞋体包含：
    一第一发泡鞋部件，具有一第一结合面；以及
    一第二发泡鞋部件，具有一第二结合面，所述第二结合面与所述第一结合面彼此结合为一体。
  12. 如权利要求11所述的多色发泡鞋体，其中，所述第一发泡鞋部件是所述多色发泡鞋体的鞋面，所述第二发泡鞋部件是所述多色发泡鞋体的鞋底。
  13. 如权利要求12所述的多色发泡鞋体，其中，所述第二发泡鞋部件的硬度大于所述第一发泡鞋部件的硬度。
  14. 如权利要求11所述的多色发泡鞋体，其中，还包含一第三发泡鞋部件，所述第三发泡鞋部件结合在所述第二发泡鞋部件底部，所述第三发泡鞋部件具有一第三结合面，所述第二发泡鞋部件具有一容槽，所述容槽的槽底具有一第四结合面，所述第三发泡鞋部件设于所述容槽中，且所述第三结合面与所述第四结合面彼此结合为一体。
  15. 如权利要求14所述的多色发泡鞋体，其中，还包含一第四发泡鞋部件，所述第四发泡鞋部件结合在所述第二发泡鞋部件底部且相邻于所述第三发泡鞋部件，所述第四发泡鞋部件具有一第五结合面，所述第四发泡鞋部件设于所述第二发泡鞋部件的容槽中，且所述第五 结合面与所述第四结合面彼此结合为一体。
  16. 如权利要求15所述的多色发泡鞋体，其中，所述第一发泡鞋部件是所述多色发泡鞋体的脚床，所述第二发泡鞋部件是所述多色发泡鞋体的鞋底，所述第三发泡鞋部件与所述第四发泡鞋部件分别是所述多色发泡鞋体的底花。
  17. 如权利要求11所述的多色发泡鞋体，其中，所述多色发泡鞋体包含鞋大底、拖鞋及包鞋中的一种。
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CN103817964A (zh) * 2014-01-18 2014-05-28 福建省晋江市中利鞋材有限公司 一种eva多色鞋底的生产制备方法
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US20210114324A1 (en) * 2020-12-28 2021-04-22 Runhong Liu Process of making a sole having different properties
CN112873937A (zh) * 2020-12-28 2021-06-01 东莞海瑞斯新材料科技有限公司 一种多性能鞋底的制造方法
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