CN116852744A - 一种环保物理发泡鞋垫及其制造工艺 - Google Patents
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/14—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined made of sponge, rubber, or plastic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
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- B26F1/38—Cutting-out; Stamping-out
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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
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
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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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/50—Footwear, e.g. shoes or parts thereof
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Abstract
本发明涉及一种环保物理发泡鞋垫及其制造工艺，按照以下步骤进行，①造粒，将高分子发泡材料制成发泡颗粒；②初步成型，将发泡颗粒注入片材模具，片材模具成型出初胚片材；③超临界发泡，将初胚片材放入反应釜中，然后往反应釜中通入氮气及二氧化碳，初胚片材在反应釜发泡进而制得鞋垫；④热压成型，将鞋垫放入热压模具，然后往鞋垫表面铺上网布，热压模具合模将鞋垫和网布粘贴一体制得半成品片材；⑤裁切定型，采用热压方式使鞋垫与网布粘接成型一起，定型时间长、稳定性好，保证鞋垫长期不变形符合使用需求，而物理发泡无需用到发泡剂，制造出的鞋垫无毒、弹性好，另外，由于采用的是物理发泡后期再用到热压方式时不会改变鞋垫物性。
Description
技术领域
本发明涉及鞋垫领域，具体涉及一种环保物理发泡鞋垫及其制造工艺。
背景技术
鞋垫是鞋子的配件，主要是配合鞋子大底、中底所做出相应的型体，按照楦底板或者面板制作尺码板，并制作出相应的形状，常见的鞋垫是采用EVA材料制成后，然后通过冷压工艺与网布结合到一起的，这种工艺的缺陷在于：一是冷压定型不稳定，后期有回弹的风险，时间长了鞋垫变形不符合设定尺寸要求；二是传统鞋垫发泡采用的是化学发泡方式，化学发泡工作时刺激性气味，不环保，对人身体健康有害。
发明内容
针对现有技术存在上述缺陷，本发明提供了一种环保物理发泡鞋垫及其制造工艺，具体技术方案如下：
一种环保物理发泡鞋垫制造工艺，按照以下步骤进行，
①造粒，将高分子发泡材料制成发泡颗粒；
②初步成型，将发泡颗粒注入片材模具，片材模具成型出初胚片材；
③超临界发泡，将初胚片材放入反应釜中，然后往反应釜中通入氮气及二氧化碳，初胚片材在反应釜发泡进而制得鞋垫；
④热压成型，将鞋垫放入热压模具，然后往鞋垫表面铺上网布，热压模具合模将鞋垫和网布粘贴一体制得半成品片材；
⑤裁切定型，将半成品片材裁切出合适尺寸的鞋垫。
作为本发明的一种优选方案，热压模具包括上模和下模，上模、下模都分别安装有发热元件，下模设有供鞋垫放入的模穴。
作为本发明的一种优选方案，上模、下模的加热温度为100～200℃，合模压力为10～30吨，保压时间为10～50s，冷却时间为100～500s。
作为本发明的一种优选方案，高分子发泡材料由TPEE、TPU、PEBAX混合制成。
作为本发明的一种优选方案，反应釜内温度为100～200℃、压强为10～20Mpa。
作为本发明的一种优选方案，反应釜内温度为150℃、压强为15Mpa，初胚片材在反应釜中保压、保热1.5个小时，快速泄压使初胚片材快速膨胀发泡进而制得鞋垫。
一种环保物理发泡鞋垫，采用上述制造工艺制得。
作为本发明环保物理发泡鞋垫的一种优选方案，包括发泡鞋垫层和网布层，网布层粘合在发泡鞋垫层上方。
有益效果：采用热压方式使鞋垫与网布粘接成型一起，定型时间长、稳定性好，保证鞋垫长期不变形符合使用需求，而物理发泡无需用到发泡剂，制造出的鞋垫无毒、弹性好，另外，由于采用的是物理发泡后期再用到热压方式时不会改变鞋垫物性。
附图说明
图1是本发明的工艺流程图；
图2是本发明的热压示意图。
具体实施方式
下面结合附图，对本发明的具体实施方式做进一步说明：
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”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位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，需要说明的是，除非另有明确的规定和限定，术语“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，可以视具体情况理解上述术语在本发明中的具体含义。
如图1和2所示，一种环保物理发泡鞋垫制造工艺，按照以下步骤进行，
①造粒，将高分子发泡材料制成发泡颗粒；
②初步成型，将发泡颗粒注入片材模具，片材模具成型出初胚片材；
③超临界发泡，将初胚片材放入反应釜中，然后往反应釜中通入氮气及二氧化碳，初胚片材在反应釜发泡进而制得鞋垫；
④热压成型，将鞋垫放入热压模具，然后往鞋垫表面铺上网布，热压模具合模将鞋垫和网布粘贴一体制得半成品片材；
⑤裁切定型，将半成品片材裁切出合适尺寸的鞋垫。
具体的，热压模具包括上模和下模，上模、下模都分别安装有发热元件，发热元件可以是发热丝或其他，下模设有供鞋垫放入的模穴，上模、下模分别发热有利于快速加热使两者粘合起来，上模、下模的加热温度为100～200℃，合模压力为10～30吨，保压时间为10～50s，冷却时间为100～500s。
具体的，高分子发泡材料由TPEE、TPU、PEBAX混合制成。热塑性聚酯弹性体(TPEE)又称聚酯橡胶，是一类含有PBT(聚对苯二甲酸丁二醇酯)聚酯硬段和脂肪族聚酯或聚醚软段的线型嵌段共聚物，TPEE兼具橡胶优良的弹性和热塑性塑料的易加工性。热塑性聚氨酯弹性体又称热塑性聚氨酯橡胶，简称TPU，是一种(AB)n型嵌段线性聚合物，A为高分子量(1000-6000)的聚酯或聚醚，B为含2-12直链碳原子的二醇，AB链段间化学结构是二异氰酸酯。PEBAX为聚醚嵌段聚酰胺，PEBAX树脂结构由规则的线形硬聚酰胺链段嵌嵌由柔软的聚醚链段构成，PEBAX不仅是具有介于热塑性塑料和橡胶之间的许多独特动态机械性能的材料，还具有优异的抗静电性能。
具体的，反应釜内温度为100～200℃、压强为10～20Mpa，优选，反应釜内温度为150℃、压强为15Mpa，初胚片材在反应釜中保压、保热1.5个小时，快速泄压使初胚片材快速膨胀发泡进而制得鞋垫。
一种环保物理发泡鞋垫，采用上述制造工艺制得，包括发泡鞋垫层和网布层，网布层粘合在发泡鞋垫层上方。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明，对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。
Claims (8)
1.一种环保物理发泡鞋垫制造工艺，其特征在于：按照以下步骤进行，
①造粒，将高分子发泡材料制成发泡颗粒；
②初步成型，将发泡颗粒注入片材模具，片材模具成型出初胚片材；
③超临界发泡，将初胚片材放入反应釜中，然后往反应釜中通入氮气及二氧化碳，初胚片材在反应釜发泡进而制得鞋垫；
④热压成型，将鞋垫放入热压模具，然后往鞋垫表面铺上网布，热压模具合模将鞋垫和网布粘贴一体制得半成品片材；
⑤裁切定型，将半成品片材裁切出合适尺寸的鞋垫。
2.根据权利要求1所述的一种环保物理发泡鞋垫制造工艺，其特征在于：热压模具包括上模和下模，上模、下模都分别安装有发热元件，下模设有供鞋垫放入的模穴。
3.根据权利要求2所述的一种环保物理发泡鞋垫制造工艺，其特征在于：上模、下模的加热温度为100～200℃，合模压力为10～30吨，保压时间为10～50s，冷却时间为100～500s。
4.根据权利要求1所述的一种环保物理发泡鞋垫制造工艺，其特征在于：高分子发泡材料由TPEE、TPU、PEBAX混合制成。
5.根据权利要求1所述的一种环保物理发泡鞋垫制造工艺，其特征在于：反应釜内温度为100～200℃、压强为10～20Mpa。
6.根据权利要求5所述的一种环保物理发泡鞋垫制造工艺，其特征在于：反应釜内温度为150℃、压强为15Mpa，初胚片材在反应釜中保压、保热1.5个小时，快速泄压使初胚片材快速膨胀发泡进而制得鞋垫。
7.一种环保物理发泡鞋垫，其特征在于：采用权利要求1-6任一所述的制造工艺制得。
8.根据权利要求7所述的一种环保物理发泡鞋垫，其特征在于：包括发泡鞋垫层和网布层，网布层粘合在发泡鞋垫层上方。
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| CN117417591A (zh) * | 2023-10-11 | 2024-01-19 | 台州天奇鞋业股份有限公司 | 一种缓震型中底eva鞋材及制备方法 |
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| CN117417591A (zh) * | 2023-10-11 | 2024-01-19 | 台州天奇鞋业股份有限公司 | 一种缓震型中底eva鞋材及制备方法 |
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