WO2021138968A1 - Thermoplastic polyurethane foam sole having injected textures and preparation process therefor - Google Patents

Thermoplastic polyurethane foam sole having injected textures and preparation process therefor Download PDF

Info

Publication number
WO2021138968A1
WO2021138968A1 PCT/CN2020/075919 CN2020075919W WO2021138968A1 WO 2021138968 A1 WO2021138968 A1 WO 2021138968A1 CN 2020075919 W CN2020075919 W CN 2020075919W WO 2021138968 A1 WO2021138968 A1 WO 2021138968A1
Authority
WO
WIPO (PCT)
Prior art keywords
thermoplastic polyurethane
injection
mold
injected
gas
Prior art date
Application number
PCT/CN2020/075919
Other languages
French (fr)
Chinese (zh)
Inventor
陈旭斌
Original Assignee
广东昂斯新材料技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东昂斯新材料技术有限公司 filed Critical 广东昂斯新材料技术有限公司
Publication of WO2021138968A1 publication Critical patent/WO2021138968A1/en

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/04—Plastics, rubber or vulcanised fibre
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
    • 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
    • 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
    • B29D35/122—Soles
    • 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
    • B29D35/128—Moulds or apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent

Definitions

  • the invention relates to the technical field of manufacturing foamed shoe soles, in particular to a thermoplastic polyurethane foamed shoe sole with an injection stripe path and a preparation process thereof.
  • Shoes are an indispensable item in people's daily life. With the development of society and the acceleration of the pace of life, people are more and more concerned about the comfort of shoes and whether they can show their individuality.
  • the sole is an important part of the shoe.
  • the existing soles are manufactured by a one-step molding process.
  • the soles produced are all solid-color soles with a single color and monotonous appearance, which cannot be personalized. Some soles with patterns and textures need to be passed. Subsequent secondary processing can achieve the adhesion and formation of new lines, which not only increases the processing procedures, but also requires additional purchases of new machinery for auxiliary production, which greatly increases the manufacturing and production costs of the enterprise, and the processing efficiency is low.
  • the texture is very easy to wear and drop during wearing, and the softness and rebound coefficient of the sole are directly related to the comfort and protection of the shoe.
  • the traditional solid sole has been gradually replaced by the emerging foam sole, mainly PU Foam soles are the main ones, but PU foam sole materials have high processing requirements, which are not environmentally friendly and cannot be recycled. PU foam soles are prone to internal bubbles during the production process, which affects the quality of the soles, and it is also easy in low temperature environments.
  • the purpose of the present invention is to provide a thermoplastic polyurethane foamed shoe sole with a unique injection stripe path, good resilience coefficient, not easy to deform and harden in a low temperature environment, environmentally friendly, recyclable, and long service life and its preparation process To solve the shortcomings of the above-mentioned existing shoe sole preparation technology.
  • the present invention is realized through the following schemes:
  • thermoplastic polyurethane foamed shoe sole with injection stripe path The foamed shoe sole is made of thermoplastic polyurethane added with a gas blowing agent in a ratio ranging from 1:25 to 200, and is fully mixed with a twin screw and a single screw to form a TPU polymer hair
  • the foam is poured into a mold by extrusion injection, and then formed by hot-compression molding.
  • the foamed shoe sole is uniformly distributed with injection stripe paths with a width of 1-60 mm, and the extrusion injection stripe paths are arranged between them. Dark isolation strip texture.
  • thermoplastic polyurethane foamed shoe sole with injection stripe path includes the following steps:
  • thermoplastic polyurethane According to the content of the gas blowing agent in the thermoplastic polyurethane, the ratio of the gas blowing agent to the thermoplastic polyurethane is in the range of 1:25 ⁇ 200, and the thermoplastic polyurethane raw material is put into the twin screw through the loss-in-weight limited precision feeder The extruder shears, and cooperates with the single-screw heating device to heat treatment to form the thermoplastic polyurethane in the molten state;
  • step S2 During the heating process, the gas blowing agent is injected according to the proportion of step S1 at the same time, and the gas blowing agent is injected into the extruder barrel to reach the pressure value of 1-8kpa and the molten thermoplastic polyurethane is continuously sheared and mixed by the twin-screw extruder. Uniformly form a mixture of polymer-gas homogeneous system;
  • thermoplastic polyurethane polymer foam is injected with a special-shaped cut-off porous nozzle, and injected into the lower master mold in the form of foam strips.
  • the master mold will move back and forth at a uniform speed to the stacking and filling.
  • the injection process adopts the injection cylinder storage pressure of 10 ⁇ 150Kpa, injection pressure of 10 ⁇ 150Kpa, injection speed of 10 ⁇ 150cm 3 /s, and the melt temperature of the thermoplastic polyurethane polymer foam is 140 ⁇ 220°C.
  • the time is 1 ⁇ 6s;
  • thermoplastic polyurethane polymer foamed strip After the thermoplastic polyurethane polymer foamed strip is injected to fill the cavity of the female mold, the female mold moves back to the preset origin position, and at the same time, it is hot-pressed with the fixed male mold in the form of automatic upper and lower mold clamping. Both male and female molds must have vent holes, the diameter of the holes is 0.5-30mm, and the number of vent holes is 1 to 400. When the mold is closed, it must have vacuum and exhaust power, and the shaping temperature should be controlled at 50°C ⁇ 90°C, setting time is 5 ⁇ 15min;
  • the gas blowing agent includes carbon dioxide, nitrogen, butane, isobutane, fluorine-containing gas, methanol, ethanol, and dimethyl ether.
  • twin-screw extruder is mainly responsible for heating and melting the raw materials and the foaming gas to mix uniformly
  • the single screw is mainly responsible for conveying and cooling the polyurethane gas mixture to form a thermoplastic polyurethane gas foam in a molten state.
  • the position of the male mold is the turntable of the fixed disc machine
  • the female mold is attached to the disc machine, and is automatically taken and positioned on the platform with the SYZ axis by the manipulator, and the SYZ axis is controlled by the servo motor.
  • the moving speed and positioning of the female mold After the inner cavity of the female mold is stacked and filled with foaming strips, the manipulator drives the female mold back to the original position of the disc machine, and the male mold will automatically be combined with the female mold for hot pressing and finalizing.
  • the set temperature of the male mold is 60-90°C
  • the temperature of the female mold is 30-70°C
  • the shaping treatment time is 5-15 minutes.
  • the area of the nozzle holes of the special-shaped intercepted porous nozzle is 3 mm 2 to 80 mm 2 , and the number of nozzle holes distributed is 1 to 200.
  • the gain effect of the present invention is:
  • thermoplastic polyurethane foamed sole produced by the present invention has a unique extrusion injection strip texture and isolation texture strip, which has a distinct personality and style, no pollution, no peculiar smell, no pungent odor, and can be worn when worn. Play a deodorant effect;
  • the foamed shoe sole manufactured by the preparation process of the present invention is not easy to generate bubbles inside, has good elasticity, is not easy to deform, has good rebound effect, and can be restored to its original shape after being folded and twisted. It is not easy to deform and harden in a low temperature environment, and has a good wear-resistant effect, is not easy to be damaged, has a long service life, and is environmentally friendly and recyclable;
  • the present invention simplifies the processing technology, has fewer processing procedures, is easy to operate and process, has a low product defect rate, and is convenient for subsequent post-integration bonding;
  • the manufacturing method of the present invention not only saves energy and environmental protection, but also saves human resources, and effectively reduces production costs;
  • the shoe sole prepared by the present invention has good shock absorption and cushioning effect, light weight, soft touch, can fit better with the sole of the foot, does not feel like a foot, is comfortable to walk, and has high wearing comfort, which can replace traditional filling
  • the air cushion has a better cushioning and shock absorption effect.
  • Figure 1 is a schematic diagram of the preparation process of the present invention.
  • Figure 2 is a schematic diagram of the product of the present invention.
  • thermoplastic polyurethane foamed shoe sole with injection stripe path The foamed shoe sole is made of thermoplastic polyurethane added with a gas blowing agent in a ratio ranging from 1:25 to 200, and is fully mixed with a twin screw and a single screw to form a TPU polymer hair
  • the foam is poured into a mold by extrusion injection, and then formed by hot-compression molding.
  • the foamed shoe sole is uniformly distributed with injection stripe paths with a width of 1-60 mm, and the extrusion injection stripe paths are arranged between them. Dark isolation strip texture.
  • thermoplastic polyurethane foamed shoe sole with injection stripe path includes the following steps:
  • thermoplastic polyurethane According to the content of the gas blowing agent in the thermoplastic polyurethane, the ratio of the gas blowing agent to the thermoplastic polyurethane is in the range of 1:25 ⁇ 200, and the thermoplastic polyurethane raw material is put into the twin screw through the loss-in-weight limited precision feeder The extruder shears, and cooperates with the single-screw heating device to heat treatment to form the thermoplastic polyurethane in the molten state;
  • step S2 During the heating process, the gas blowing agent is injected according to the proportion of step S1 at the same time, and the gas blowing agent is injected into the extruder barrel to reach the pressure value of 1-8kpa and the molten thermoplastic polyurethane is continuously sheared and mixed by the twin-screw extruder. Uniformly form a mixture of polymer-gas homogeneous system;
  • thermoplastic polyurethane polymer foam is injected with a special-shaped cut-off porous nozzle, and injected into the lower master mold in the form of foam strips.
  • the master mold will move back and forth at a uniform speed to the stacking and filling.
  • the injection process adopts the injection cylinder storage pressure of 10 ⁇ 150Kpa, injection pressure of 10 ⁇ 150Kpa, injection speed of 10 ⁇ 150cm 3 /s, and the melt temperature of the thermoplastic polyurethane polymer foam is 140 ⁇ 220°C.
  • the time is 1 ⁇ 6s;
  • thermoplastic polyurethane polymer foamed strip After the thermoplastic polyurethane polymer foamed strip is injected to fill the cavity of the female mold, the female mold moves back to the preset origin position, and at the same time, it is hot-pressed with the fixed male mold in the form of automatic upper and lower mold clamping.
  • the male and female molds In the process of hot pressing, the male and female molds must have vent holes. The diameter of the vent hole is 0.5-30mm.
  • the mold When the mold is closed, it must have the function of vacuuming and exhausting, so that the foam material is in the shoe mold. The air in the foam material can be exhausted when the inner is shaped to solve the problem of bubbles in the sole molding.
  • the shaping temperature is controlled at 50 ⁇ 90°C, and the shaping time is 5 ⁇ 15min;
  • the gas blowing agent includes carbon dioxide, nitrogen, butane, isobutane, fluorine-containing gas, methanol, ethanol, and dimethyl ether.
  • twin-screw extruder is mainly responsible for heating and melting the raw materials and the foaming gas to mix uniformly
  • the single screw is mainly responsible for conveying and cooling the polyurethane gas mixture to form a thermoplastic polyurethane gas foam in a molten state.
  • the position of the male mold is the turntable of the fixed disc machine
  • the female mold is attached to the disc machine, and is automatically taken and positioned on the platform with the SYZ axis by the manipulator, and the SYZ axis is controlled by the servo motor.
  • the moving speed and positioning of the female mold After the inner cavity of the female mold is stacked and filled with foaming strips, the manipulator drives the female mold back to the original position of the disc machine, and the male mold will automatically be combined with the female mold for hot pressing and finalizing.
  • the set temperature of the male mold is 60-90°C
  • the temperature of the female mold is 30-70°C
  • the male and female molds must have vent holes
  • the diameter of the holes is 0.5-30mm
  • the number of vent holes is 1 to 400.
  • the diameter of the nozzle holes of the special-shaped intercepted porous nozzle has an area ranging from 3 mm 2 to 80 mm 2 , and the number of nozzle holes distributed is 1 to 200.
  • thermoplastic polyurethane foamed shoe sole with injection stripe path includes the following steps:
  • thermoplastic polyurethane According to the content of the gas blowing agent in the thermoplastic polyurethane, the ratio of the gas blowing agent to the thermoplastic polyurethane is 1:40, and the thermoplastic polyurethane raw material is put into the twin-screw extruder through the loss-in-weight limited precision feeder Machine shearing, combined with single-screw heating device for heat treatment to form molten thermoplastic polyurethane;
  • step S2 Inject the gas blowing agent according to the proportion of step S1 at the same time during the heating treatment.
  • the gas blowing agent When the gas blowing agent is injected into the extruder barrel to reach the pressure value of 8kpa, it will be formed by continuous shearing and mixing with the molten thermoplastic polyurethane by the twin screw extruder. Mixture of polymer-gas homogeneous system;
  • thermoplastic polyurethane polymer foam is injected with a special-shaped cut-off porous nozzle with a nozzle hole area of 4mm 2 and injected into the lower master mold in the form of foam strips.
  • the master mold The temperature is set to 70°C, the master mold will move back and forth at a constant speed until the stack is filled.
  • the injection process adopts an injection cylinder with a storage pressure of 50Kpa, an injection pressure of 80pa, an injection speed of 30cm 3 /s, and the melting of the thermoplastic polyurethane polymer foam.
  • the body temperature is 168°C, and the injection time is 2s;
  • thermoplastic polyurethane polymer foamed strip After the thermoplastic polyurethane polymer foamed strip is injected to fill the cavity of the female mold, the female mold moves back to the preset origin position, and at the same time, it is hot-pressed with the fixed male mold in the form of automatic upper and lower mold clamping.
  • the diameters of the vent holes of the male and female molds are 0.8mm and 6mm, respectively, the number of male mold vent holes is 60, the number of female mold vent holes is 30, the shaping temperature is controlled at 90°C, and the shaping time is 10min;
  • thermoplastic polyurethane shoe midsole has a detection density of 0.25 g/cm 3 ⁇ 0.35g/cm 3 , the rebound rate is 62% ⁇ 75%, the hardness value is 40 ⁇ 60C, the sole pattern is densely distributed, and there is no bubble hole in the sole.
  • thermoplastic polyurethane foamed shoe sole with injection stripe path includes the following steps:
  • thermoplastic polyurethane According to the content of the gas blowing agent in the thermoplastic polyurethane, the ratio of the gas blowing agent to the thermoplastic polyurethane is 1:200, and the thermoplastic polyurethane raw material is put into the twin-screw extruder through the loss-in-weight limited precision feeder Machine shearing, combined with single-screw heating device for heat treatment to form molten thermoplastic polyurethane;
  • step S2 During the heating process, the gas blowing agent is injected according to the proportion of step S1 at the same time, and the gas blowing agent is injected into the extruder barrel to reach a pressure value of 4kpa and the molten thermoplastic polyurethane is continuously sheared and mixed by the twin-screw extruder to form a uniform formation. Mixture of polymer-gas homogeneous system;
  • thermoplastic polyurethane shoe midsole has a detection density of 0.22g /cm 3 ⁇ 0.33g/cm 3 , the resilience rate is 52% ⁇ 70%, the hardness value is 45 ⁇ 60C, the sole pattern distribution is relatively sparse with 4mm 2 nozzle holes, and the soles produced by the nozzle holes are relatively sparse, light in weight, and moderate in resilience and hardness. , The most comfortable to wear.
  • thermoplastic polyurethane foamed shoe sole with injection stripe path includes the following steps:
  • thermoplastic polyurethane According to the content of the gas blowing agent in the thermoplastic polyurethane, the ratio of the gas blowing agent to the thermoplastic polyurethane is 1:25, and the thermoplastic polyurethane raw material is put into the twin-screw extrusion through the loss-in-weight limited precision feeder Machine shearing, combined with single-screw heating device for heat treatment to form molten thermoplastic polyurethane;
  • step S2 Inject the gas blowing agent according to the proportion of step S1 at the same time during the heating treatment, and the gas blowing agent is injected into the extruder barrel to reach a pressure value of 6kpa.
  • the twin screw extruder continues to shear and mix uniformly with the molten thermoplastic polyurethane. Mixture of polymer-gas homogeneous system;
  • thermoplastic polyurethane shoe midsole has a detection density of 0.2g /cm 3 ⁇ 0.31g/cm 3 , the resilience rate is 48% ⁇ 68%, the hardness value is 40 ⁇ 60C, the sole has wide textures, and the distribution is relatively sparse compared to 16mm 2 nozzle holes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

The present invention relates to the technical field of foam sole manufacturing, and in particular relates to a thermoplastic polyurethane foam sole having injected textures and a preparation process therefor. A thermoplastic polyurethane foam sole having injected textures, the foam sole being manufactured by adding a gas blowing agent to thermoplastic polyurethanethe in a ratio range of 1 : 25 to 200, fully mixing same by means of the cooperation of a twin screw and a single screw to form TPU polymer foam, injecting same into a die by means of extrusion injection, and closing the die by thermocompression and performing shaping; injected textures having a width of 1 mm to 60 mm are uniformly distributed on the foam sole, and dark color isolation texture stripes are provided between the extrusion-injected textures. Compared with the prior art, the present invention has the following beneficial effects: the thermoplastic polyurethane foam sole produced by the present invention has unique extrusion-injected textures and isolation texture stripes, has vivid character and style, has a good elastic effect, rebound effect, and wear resistance effect, has a long service life, and is environmentally-friendly.

Description

一种带注射条纹路的热塑性聚氨酯发泡鞋底及其制备工艺Thermoplastic polyurethane foamed shoe sole with injection stripe path and preparation process thereof 技术领域Technical field
本发明涉及发泡鞋底的制造技术领域，具体涉及一种带注射条纹路的热塑性聚氨酯发泡鞋底及其制备工艺。The invention relates to the technical field of manufacturing foamed shoe soles, in particular to a thermoplastic polyurethane foamed shoe sole with an injection stripe path and a preparation process thereof.
背景技术Background technique
鞋是人们日常生活当中必不可少的物件，随着社会的发展和生活节奏的加快，人们对鞋子的舒适性和能否彰显个性的关注点越来越高。鞋底作为鞋子的重要组成部分，现有鞋底都是采用一次成型工艺制造，生产出来的鞋底都是纯色鞋底，颜色单一，外表样式单调，无法突显个性化，一些带有花纹纹理的鞋底都需要通过后续二次加工才能实现新纹路的附着生成，不仅增加了加工工序，还需要额外的购置新的机械来进行辅助生产，大大地增加了企业的制造生产成本，加工效率低，二次加工上去的纹路才穿着过程中极容易磨损掉落，而且鞋底的柔软度和回弹系数直接关系到鞋的穿着舒适度和保护度，传统的实心鞋底已逐渐被新兴的发泡鞋底所取代，主要以PU发泡鞋底为主，但PU发泡鞋底材料存在着加工工艺要求高，不环保无法回收利用，PU发泡鞋底在制作过程中内部容易产生气泡，影响鞋底的质量，在低温的环境下也容易变形，***的缺点，鞋底磨损快，导致其使用寿命短，穿着舒适度差。Shoes are an indispensable item in people's daily life. With the development of society and the acceleration of the pace of life, people are more and more concerned about the comfort of shoes and whether they can show their individuality. The sole is an important part of the shoe. The existing soles are manufactured by a one-step molding process. The soles produced are all solid-color soles with a single color and monotonous appearance, which cannot be personalized. Some soles with patterns and textures need to be passed. Subsequent secondary processing can achieve the adhesion and formation of new lines, which not only increases the processing procedures, but also requires additional purchases of new machinery for auxiliary production, which greatly increases the manufacturing and production costs of the enterprise, and the processing efficiency is low. The texture is very easy to wear and drop during wearing, and the softness and rebound coefficient of the sole are directly related to the comfort and protection of the shoe. The traditional solid sole has been gradually replaced by the emerging foam sole, mainly PU Foam soles are the main ones, but PU foam sole materials have high processing requirements, which are not environmentally friendly and cannot be recycled. PU foam soles are prone to internal bubbles during the production process, which affects the quality of the soles, and it is also easy in low temperature environments. The shortcomings of deformation and hardening, the sole wears quickly, resulting in a short service life and poor wearing comfort.
发明内容Summary of the invention
本发明的目的在于提供一种带有独特注射条纹路且具有良好回弹系数，在低温的环境下不容易变形***并环保可回收利用，使用寿命长的热塑性聚氨酯发泡鞋底及其制备工艺来解决上述现有鞋底制备技术存在的不足之处。The purpose of the present invention is to provide a thermoplastic polyurethane foamed shoe sole with a unique injection stripe path, good resilience coefficient, not easy to deform and harden in a low temperature environment, environmentally friendly, recyclable, and long service life and its preparation process To solve the shortcomings of the above-mentioned existing shoe sole preparation technology.
本发明通过如下方案实现：The present invention is realized through the following schemes:
一种带注射条纹路的热塑性聚氨酯发泡鞋底，所述发泡鞋底由热塑性聚氨酯添加气体发泡剂比例范围为1:25～200，在双螺杆与单螺杆配合下充分混合形成TPU聚合物发泡物，通过挤出注射灌注在模具内，热压合模定型制成，所述发泡鞋底上均布有宽度为1～60mm的注射条纹路，所述挤出注射条纹路之间设有深色隔离条纹理。A thermoplastic polyurethane foamed shoe sole with injection stripe path. The foamed shoe sole is made of thermoplastic polyurethane added with a gas blowing agent in a ratio ranging from 1:25 to 200, and is fully mixed with a twin screw and a single screw to form a TPU polymer hair The foam is poured into a mold by extrusion injection, and then formed by hot-compression molding. The foamed shoe sole is uniformly distributed with injection stripe paths with a width of 1-60 mm, and the extrusion injection stripe paths are arranged between them. Dark isolation strip texture.
一种带注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺，包括以下步骤：A preparation process of thermoplastic polyurethane foamed shoe sole with injection stripe path includes the following steps:
S1：根据气体发泡剂在热塑性聚氨脂的含量添加气体发泡剂与热塑性聚氨脂的比例范围取1:25～200，通过失重式限量精准喂料机将热塑性聚氨酯原料放入双螺杆挤出机剪切，配合单 螺杆加热装置进行加热处理形成熔融状态的热塑性聚氨酯；S1: According to the content of the gas blowing agent in the thermoplastic polyurethane, the ratio of the gas blowing agent to the thermoplastic polyurethane is in the range of 1:25～200, and the thermoplastic polyurethane raw material is put into the twin screw through the loss-in-weight limited precision feeder The extruder shears, and cooperates with the single-screw heating device to heat treatment to form the thermoplastic polyurethane in the molten state;
S2：在加热处理时同时按步骤S1比例注入气体发泡剂，在挤出机筒注入气体发泡剂达到压力值为1～8kpa状态下与熔融热塑性聚氨酯由双螺杆挤出机继续剪切混合均匀形成聚合物～气体均相体系的混合物；S2: During the heating process, the gas blowing agent is injected according to the proportion of step S1 at the same time, and the gas blowing agent is injected into the extruder barrel to reach the pressure value of 1-8kpa and the molten thermoplastic polyurethane is continuously sheared and mixed by the twin-screw extruder. Uniformly form a mixture of polymer-gas homogeneous system;
S3：继续通过单螺杆挤出机对聚合物～气体均相体系的混合物进行降温处理，使混合物在输送过程中产生熔体压力破坏材料内部聚合物～气体均相体系的平衡状态形成热塑性聚氨酯聚合物发泡体；S3: Continue to cool down the polymer-gas homogeneous system mixture through the single-screw extruder, so that the mixture will produce melt pressure during the conveying process, destroy the equilibrium state of the polymer inside the material-gas homogeneous system to form thermoplastic polyurethane polymerization物foam
S4：通过注射工艺用异形截流式多孔射嘴将制备好的热塑性聚氨酯聚合物发泡体射出，将以发泡条的形式注射入下方的母模内，母模会匀速前后左右移动至堆叠填满，注射工艺采用注射缸储料压力10～150Kpa、注射压力10～150Kpa、注射速度为10～150cm 3/s、热塑性聚氨酯聚合物发泡体的熔体温度值为140～220℃，射料的时间为1～6s； S4: Through the injection process, the prepared thermoplastic polyurethane polymer foam is injected with a special-shaped cut-off porous nozzle, and injected into the lower master mold in the form of foam strips. The master mold will move back and forth at a uniform speed to the stacking and filling. Full, the injection process adopts the injection cylinder storage pressure of 10～150Kpa, injection pressure of 10～150Kpa, injection speed of 10～150cm 3 /s, and the melt temperature of the thermoplastic polyurethane polymer foam is 140～220℃. The time is 1～6s;
S5：在热塑性聚氨酯聚合物发泡条注射填满母模的内腔后，母模移回到预设原点位置，同时并且与固定设置的公模采用自动上下合模的形式进行热压成型，公母模具都要开排气孔，开孔直径在0.5～30mm，排气孔分布数量为1～400个，当模具合模时要具有抽真空与排气功，定型温度控制在50℃～90℃，定型时间5～15min；S5: After the thermoplastic polyurethane polymer foamed strip is injected to fill the cavity of the female mold, the female mold moves back to the preset origin position, and at the same time, it is hot-pressed with the fixed male mold in the form of automatic upper and lower mold clamping. Both male and female molds must have vent holes, the diameter of the holes is 0.5-30mm, and the number of vent holes is 1 to 400. When the mold is closed, it must have vacuum and exhaust power, and the shaping temperature should be controlled at 50℃～ 90℃, setting time is 5～15min;
S6：成型加工完毕后模具打开，完成带有注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺。S6: After the molding process is completed, the mold is opened, and the preparation process of the thermoplastic polyurethane foamed sole with injection stripes is completed.
进一步的，所述气体发泡剂包括二氧化碳、氮气、丁烷、异丁烷、含氟气体、甲醇、乙醇、二甲醚。Further, the gas blowing agent includes carbon dioxide, nitrogen, butane, isobutane, fluorine-containing gas, methanol, ethanol, and dimethyl ether.
进一步的，所述的双螺杆挤出机主要是负责加热熔融原料与发泡气体混合均匀，单螺杆主要是负责聚氨酯气体混合物输送降温，形成熔融状态的热塑性聚氨酯气体发泡物。Further, the twin-screw extruder is mainly responsible for heating and melting the raw materials and the foaming gas to mix uniformly, and the single screw is mainly responsible for conveying and cooling the polyurethane gas mixture to form a thermoplastic polyurethane gas foam in a molten state.
进一步的，所述公模位置是固定圆盘机的转盘，母模是附在圆盘机，是由机械手自动拿到带有SYZ轴的平台上并定位，由伺服电机控制SYZ轴的平台上的母模移动速度与定位，母模内腔层叠填满发泡条后，由机械手带动母模回到原来的圆盘机位置上，公模会自动与母模合模进行热压和合定型。Further, the position of the male mold is the turntable of the fixed disc machine, the female mold is attached to the disc machine, and is automatically taken and positioned on the platform with the SYZ axis by the manipulator, and the SYZ axis is controlled by the servo motor. The moving speed and positioning of the female mold. After the inner cavity of the female mold is stacked and filled with foaming strips, the manipulator drives the female mold back to the original position of the disc machine, and the male mold will automatically be combined with the female mold for hot pressing and finalizing.
进一步的，所述公模设定温度60～90℃，母模温度30～70℃，定型处理时间为在5～15min。Further, the set temperature of the male mold is 60-90°C, the temperature of the female mold is 30-70°C, and the shaping treatment time is 5-15 minutes.
进一步的，所述的异形截流式多孔射嘴其的射嘴孔的面积由3mm 2～80mm 2，射嘴孔的分布数量为1～200个。 Further, the area of the nozzle holes of the special-shaped intercepted porous nozzle is 3 mm 2 to 80 mm 2 , and the number of nozzle holes distributed is 1 to 200.
本发明相对于现有技术的增益效果是：Compared with the prior art, the gain effect of the present invention is:
1.本发明所生产的热塑性聚氨酯发泡鞋底带有独特的挤出注射条纹理和隔离纹理条带，具有鲜明的个性和风格，无污染无异味，不会产生刺鼻气味，穿着时也能够起到防臭效果；1. The thermoplastic polyurethane foamed sole produced by the present invention has a unique extrusion injection strip texture and isolation texture strip, which has a distinct personality and style, no pollution, no peculiar smell, no pungent odor, and can be worn when worn. Play a deodorant effect;
2.通过本发明的制备工艺所制造的发泡鞋底内部不易产生气泡，具有良好的弹性效果，且不易变形，回弹效果好，在翻折扭曲后能够很好的恢复到原来的形状，在低温的环境下不容易变形***，并且具有良好的耐磨效果，不易损坏，使用寿命长，环保可回收利用；2. The foamed shoe sole manufactured by the preparation process of the present invention is not easy to generate bubbles inside, has good elasticity, is not easy to deform, has good rebound effect, and can be restored to its original shape after being folded and twisted. It is not easy to deform and harden in a low temperature environment, and has a good wear-resistant effect, is not easy to be damaged, has a long service life, and is environmentally friendly and recyclable;
3.本发明简化了加工工艺，加工工序少，容易操作加工，产品不良品率低，方便后续后整粘合；3. The present invention simplifies the processing technology, has fewer processing procedures, is easy to operate and process, has a low product defect rate, and is convenient for subsequent post-integration bonding;
4.本发明制造方法既节约能源环保，又节省人力资源，有效降低生产成本；4. The manufacturing method of the present invention not only saves energy and environmental protection, but also saves human resources, and effectively reduces production costs;
5.本发明制备的鞋底吸震缓冲效果好，质量轻，脚部触感柔软，能与脚底更好的贴合，不会有硌脚的感觉，行走舒适，穿着舒适度高，能够的替代传统填充式气垫起到更好的缓冲吸震作用。5. The shoe sole prepared by the present invention has good shock absorption and cushioning effect, light weight, soft touch, can fit better with the sole of the foot, does not feel like a foot, is comfortable to walk, and has high wearing comfort, which can replace traditional filling The air cushion has a better cushioning and shock absorption effect.
附图说明Description of the drawings
图1为本发明的制备流程示意图。Figure 1 is a schematic diagram of the preparation process of the present invention.
图2为本发明的产品示意图。Figure 2 is a schematic diagram of the product of the present invention.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，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作出创造性劳动的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。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
一种带注射条纹路的热塑性聚氨酯发泡鞋底，所述发泡鞋底由热塑性聚氨酯添加气体发泡剂比例范围为1:25～200，在双螺杆与单螺杆配合下充分混合形成TPU聚合物发泡物，通过挤出注射灌注在模具内，热压合模定型制成，所述发泡鞋底上均布有宽度为1～60mm的注射条纹路，所述挤出注射条纹路之间设有深色隔离条纹理。A thermoplastic polyurethane foamed shoe sole with injection stripe path. The foamed shoe sole is made of thermoplastic polyurethane added with a gas blowing agent in a ratio ranging from 1:25 to 200, and is fully mixed with a twin screw and a single screw to form a TPU polymer hair The foam is poured into a mold by extrusion injection, and then formed by hot-compression molding. The foamed shoe sole is uniformly distributed with injection stripe paths with a width of 1-60 mm, and the extrusion injection stripe paths are arranged between them. Dark isolation strip texture.
一种带注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺，包括以下步骤：A preparation process of thermoplastic polyurethane foamed shoe sole with injection stripe path includes the following steps:
S1：根据气体发泡剂在热塑性聚氨脂的含量添加气体发泡剂与热塑性聚氨脂的比例范围取1:25～200，通过失重式限量精准喂料机将热塑性聚氨酯原料放入双螺杆挤出机剪切，配合单螺杆加热装置进行加热处理形成熔融状态的热塑性聚氨酯；S1: According to the content of the gas blowing agent in the thermoplastic polyurethane, the ratio of the gas blowing agent to the thermoplastic polyurethane is in the range of 1:25～200, and the thermoplastic polyurethane raw material is put into the twin screw through the loss-in-weight limited precision feeder The extruder shears, and cooperates with the single-screw heating device to heat treatment to form the thermoplastic polyurethane in the molten state;
S2：在加热处理时同时按步骤S1比例注入气体发泡剂，在挤出机筒注入气体发泡剂达到压力值为1～8kpa状态下与熔融热塑性聚氨酯由双螺杆挤出机继续剪切混合均匀形成聚合物～气体 均相体系的混合物；S2: During the heating process, the gas blowing agent is injected according to the proportion of step S1 at the same time, and the gas blowing agent is injected into the extruder barrel to reach the pressure value of 1-8kpa and the molten thermoplastic polyurethane is continuously sheared and mixed by the twin-screw extruder. Uniformly form a mixture of polymer-gas homogeneous system;
S3：继续通过单螺杆挤出机对聚合物～气体均相体系的混合物进行降温处理，使混合物在输送过程中产生熔体压力破坏材料内部聚合物～气体均相体系的平衡状态形成热塑性聚氨酯聚合物发泡体；S3: Continue to cool down the polymer-gas homogeneous system mixture through the single-screw extruder, so that the mixture will produce melt pressure during the conveying process, destroy the equilibrium state of the polymer inside the material-gas homogeneous system to form thermoplastic polyurethane polymerization物foam
S4：通过注射工艺用异形截流式多孔射嘴将制备好的热塑性聚氨酯聚合物发泡体射出，将以发泡条的形式注射入下方的母模内，母模会匀速前后左右移动至堆叠填满，注射工艺采用注射缸储料压力10～150Kpa、注射压力10～150Kpa、注射速度为10～150cm 3/s、热塑性聚氨酯聚合物发泡体的熔体温度值为140～220℃，射料的时间为1～6s； S4: Through the injection process, the prepared thermoplastic polyurethane polymer foam is injected with a special-shaped cut-off porous nozzle, and injected into the lower master mold in the form of foam strips. The master mold will move back and forth at a uniform speed to the stacking and filling. Full, the injection process adopts the injection cylinder storage pressure of 10～150Kpa, injection pressure of 10～150Kpa, injection speed of 10～150cm 3 /s, and the melt temperature of the thermoplastic polyurethane polymer foam is 140～220℃. The time is 1～6s;
S5：在热塑性聚氨酯聚合物发泡条注射填满母模的内腔后，母模移回到预设原点位置，同时并且与固定设置的公模采用自动上下合模的形式进行热压成型，在热压成型的过程中，公母模具都要开排气孔，排气孔开孔直径为0.5～30mm，当模具合模时要具有抽真空与排气功能，让发泡料在鞋模里定型时能将发泡料里的空气排掉，解决鞋底成型内有气泡问题，定型温度控制在50～90℃，定型时间5～15min；S5: After the thermoplastic polyurethane polymer foamed strip is injected to fill the cavity of the female mold, the female mold moves back to the preset origin position, and at the same time, it is hot-pressed with the fixed male mold in the form of automatic upper and lower mold clamping. In the process of hot pressing, the male and female molds must have vent holes. The diameter of the vent hole is 0.5-30mm. When the mold is closed, it must have the function of vacuuming and exhausting, so that the foam material is in the shoe mold. The air in the foam material can be exhausted when the inner is shaped to solve the problem of bubbles in the sole molding. The shaping temperature is controlled at 50～90℃, and the shaping time is 5～15min;
S6：成型加工完毕后模具打开，完成带有注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺。S6: After the molding process is completed, the mold is opened, and the preparation process of the thermoplastic polyurethane foamed sole with injection stripes is completed.
进一步的，所述气体发泡剂包括二氧化碳、氮气、丁烷、异丁烷、含氟气体、甲醇、乙醇、二甲醚。Further, the gas blowing agent includes carbon dioxide, nitrogen, butane, isobutane, fluorine-containing gas, methanol, ethanol, and dimethyl ether.
进一步的，所述的双螺杆挤出机主要是负责加热熔融原料与发泡气体混合均匀，单螺杆主要是负责聚氨酯气体混合物输送降温，形成熔融状态的热塑性聚氨酯气体发泡物。Further, the twin-screw extruder is mainly responsible for heating and melting the raw materials and the foaming gas to mix uniformly, and the single screw is mainly responsible for conveying and cooling the polyurethane gas mixture to form a thermoplastic polyurethane gas foam in a molten state.
进一步的，所述公模位置是固定圆盘机的转盘，母模是附在圆盘机，是由机械手自动拿到带有SYZ轴的平台上并定位，由伺服电机控制SYZ轴的平台上的母模移动速度与定位，母模内腔层叠填满发泡条后，由机械手带动母模回到原来的圆盘机位置上，公模会自动与母模合模进行热压和合定型。Further, the position of the male mold is the turntable of the fixed disc machine, the female mold is attached to the disc machine, and is automatically taken and positioned on the platform with the SYZ axis by the manipulator, and the SYZ axis is controlled by the servo motor. The moving speed and positioning of the female mold. After the inner cavity of the female mold is stacked and filled with foaming strips, the manipulator drives the female mold back to the original position of the disc machine, and the male mold will automatically be combined with the female mold for hot pressing and finalizing.
进一步的，所述公模设定温度60～90℃，母模温度30～70℃，公母模具都要开排气孔，开孔直径在0.5～30mm，排气孔分布数量为1～400个，当模具合模时要具有抽真空与排气功能，定型处理时间为在5～15min。Further, the set temperature of the male mold is 60-90°C, the temperature of the female mold is 30-70°C, the male and female molds must have vent holes, the diameter of the holes is 0.5-30mm, and the number of vent holes is 1 to 400. A. When the mold is closed, it must have the function of vacuuming and exhausting, and the shaping treatment time is 5-15min.
进一步的，所述的异形截流式多孔射嘴其的射嘴孔的直径由面积由3mm 2～80mm 2，射嘴孔的分布数量为1～200个。 Further, the diameter of the nozzle holes of the special-shaped intercepted porous nozzle has an area ranging from 3 mm 2 to 80 mm 2 , and the number of nozzle holes distributed is 1 to 200.
实施例1：Example 1:
一种带注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺，包括以下步骤：A preparation process of thermoplastic polyurethane foamed shoe sole with injection stripe path includes the following steps:
S1：根据气体发泡剂在热塑性聚氨脂的含量添加气体发泡剂与热塑性聚氨脂的比例范围取1:40，通过失重式限量精准喂料机将热塑性聚氨酯原料放入双螺杆挤出机剪切，配合单螺杆加热装置进行加热处理形成熔融状态的热塑性聚氨酯；S1: According to the content of the gas blowing agent in the thermoplastic polyurethane, the ratio of the gas blowing agent to the thermoplastic polyurethane is 1:40, and the thermoplastic polyurethane raw material is put into the twin-screw extruder through the loss-in-weight limited precision feeder Machine shearing, combined with single-screw heating device for heat treatment to form molten thermoplastic polyurethane;
S2：在加热处理时同时按步骤S1比例注入气体发泡剂，在挤出机筒注入气体发泡剂达到压力值为8kpa状态下与熔融热塑性聚氨酯由双螺杆挤出机继续剪切混合均匀形成聚合物～气体均相体系的混合物；S2: Inject the gas blowing agent according to the proportion of step S1 at the same time during the heating treatment. When the gas blowing agent is injected into the extruder barrel to reach the pressure value of 8kpa, it will be formed by continuous shearing and mixing with the molten thermoplastic polyurethane by the twin screw extruder. Mixture of polymer-gas homogeneous system;
S3：继续通过单螺杆挤出机对聚合物～气体均相体系的混合物进行降温处理，使混合物在输送过程中产生熔体压力破坏材料内部聚合物～气体均相体系的平衡状态形成热塑性聚氨酯聚合物发泡体；S3: Continue to cool down the polymer-gas homogeneous system mixture through the single-screw extruder, so that the mixture will produce melt pressure during the conveying process, destroy the equilibrium state of the polymer inside the material-gas homogeneous system to form thermoplastic polyurethane polymerization物foam
S4：通过注射工艺用射嘴孔面积为4mm 2的异形截流式多孔射嘴将制备好的热塑性聚氨酯聚合物发泡体射出，将以发泡条的形式注射入下方的母模内，母模的温度设置为70℃，母模会匀速前后左右移动至堆叠填满，注射工艺采用注射缸储料压力50Kpa、注射压力80pa、注射速度为30cm 3/s、热塑性聚氨酯聚合物发泡体的熔体温度值为168℃，射料的时间为2s； S4: Through the injection process, the prepared thermoplastic polyurethane polymer foam is injected with a special-shaped cut-off porous nozzle with a nozzle hole area of 4mm 2 and injected into the lower master mold in the form of foam strips. The master mold The temperature is set to 70℃, the master mold will move back and forth at a constant speed until the stack is filled. The injection process adopts an injection cylinder with a storage pressure of 50Kpa, an injection pressure of 80pa, an injection speed of 30cm 3 /s, and the melting of the thermoplastic polyurethane polymer foam. The body temperature is 168℃, and the injection time is 2s;
S5：在热塑性聚氨酯聚合物发泡条注射填满母模的内腔后，母模移回到预设原点位置，同时并且与固定设置的公模采用自动上下合模的形式进行热压成型，公母模具排气孔开孔直径分别为0.8mm、6mm，公模排气孔数量为60个，母模排气孔数量为30个，定型温度控制在90℃，定型时间10min；S5: After the thermoplastic polyurethane polymer foamed strip is injected to fill the cavity of the female mold, the female mold moves back to the preset origin position, and at the same time, it is hot-pressed with the fixed male mold in the form of automatic upper and lower mold clamping. The diameters of the vent holes of the male and female molds are 0.8mm and 6mm, respectively, the number of male mold vent holes is 60, the number of female mold vent holes is 30, the shaping temperature is controlled at 90℃, and the shaping time is 10min;
S6：成型加工完毕后模具打开，完成带有注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺。S6: After the molding process is completed, the mold is opened, and the preparation process of the thermoplastic polyurethane foamed sole with injection stripes is completed.
采用1:40比例的气体发泡剂与熔融的热塑性聚氨酯橡胶混合后形成TPU聚合物发泡体由4mm 2的射嘴孔注入模具进行进行定型，生产的热塑性聚氨酯鞋中底，检测密度为0.25g/cm 3～0.35g/cm 3，回弹率为62％～75％，硬度值为40～60C，鞋底纹路细分布密集，鞋底内无气泡孔。 Use 1:40 ratio of gas blowing agent and molten thermoplastic polyurethane rubber to form a TPU polymer foam, which is injected into a mold with a 4mm 2 nozzle hole for shaping. The produced thermoplastic polyurethane shoe midsole has a detection density of 0.25 g/cm 3 ～0.35g/cm 3 , the rebound rate is 62%～75%, the hardness value is 40～60C, the sole pattern is densely distributed, and there is no bubble hole in the sole.
实施例2：Example 2:
一种带注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺，包括以下步骤：A preparation process of thermoplastic polyurethane foamed shoe sole with injection stripe path includes the following steps:
S1：根据气体发泡剂在热塑性聚氨脂的含量添加气体发泡剂与热塑性聚氨脂的比例范围取1:200，通过失重式限量精准喂料机将热塑性聚氨酯原料放入双螺杆挤出机剪切，配合单螺杆加热装置进行加热处理形成熔融状态的热塑性聚氨酯；S1: According to the content of the gas blowing agent in the thermoplastic polyurethane, the ratio of the gas blowing agent to the thermoplastic polyurethane is 1:200, and the thermoplastic polyurethane raw material is put into the twin-screw extruder through the loss-in-weight limited precision feeder Machine shearing, combined with single-screw heating device for heat treatment to form molten thermoplastic polyurethane;
S2：在加热处理时同时按步骤S1比例注入气体发泡剂，在挤出机筒注入气体发泡剂达到压力值为4kpa状态下与熔融热塑性聚氨酯由双螺杆挤出机继续剪切混合均匀形成聚合物～气体均 相体系的混合物；S2: During the heating process, the gas blowing agent is injected according to the proportion of step S1 at the same time, and the gas blowing agent is injected into the extruder barrel to reach a pressure value of 4kpa and the molten thermoplastic polyurethane is continuously sheared and mixed by the twin-screw extruder to form a uniform formation. Mixture of polymer-gas homogeneous system;
S3：继续通过单螺杆挤出机对聚合物～气体均相体系的混合物进行降温处理，使混合物在输送过程中产生熔体压力破坏材料内部聚合物～气体均相体系的平衡状态形成热塑性聚氨酯聚合物发泡体；S3: Continue to cool down the polymer-gas homogeneous system mixture through the single-screw extruder, so that the mixture will produce melt pressure during the conveying process, destroy the equilibrium state of the polymer inside the material-gas homogeneous system to form thermoplastic polyurethane polymerization物foam
S4：通过注射工艺用16mm 2的异形截流式多孔射嘴将制备好的热塑性聚氨酯聚合物发泡体射出，将以发泡条的形式注射入下方的母模内，母模的温度设置为50℃，母模会匀速前后左右移动至堆叠填满，注射工艺采用注射缸储料压力80Kpa、注射压力50Kpa、注射速度为40cm 3/s、热塑性聚氨酯聚合物发泡体的熔体温度值为160℃，射料的时间为2s； S4: Inject the prepared thermoplastic polyurethane polymer foam with a 16mm 2 special-shaped cut-off porous nozzle through the injection process, and inject it into the lower master mold in the form of a foam strip. The temperature of the master mold is set to 50 ℃, the master mold will move back and forth at a constant speed until the stack is filled. The injection process adopts the injection cylinder storage pressure of 80Kpa, injection pressure of 50Kpa, injection speed of 40cm 3 /s, and the melt temperature of the thermoplastic polyurethane polymer foam is 160 ℃, the injection time is 2s;
S5：在热塑性聚氨酯聚合物发泡条猪舍填满母模的内腔后，母模移回到预设原点位置，同时并且与固定设置的公模采用自动上下合模的形式进行热压成型，公母模具排气孔开孔直径分别为0.6mm、8mm，公模排气孔数量为80个，母模排气孔数量为25个，定型温度控制在50℃，定型时间15min；S5: After the cavity of the female mold is filled in the thermoplastic polyurethane polymer foam barn, the female mold moves back to the preset origin position, and at the same time, it is hot-pressed with the fixed male mold in the form of automatic upper and lower mold clamping , The opening diameters of male and female mold vent holes are 0.6mm and 8mm, respectively, the number of male mold vent holes is 80, the number of female mold vent holes is 25, the setting temperature is controlled at 50℃, and the setting time is 15min;
S6：成型加工完毕后模具打开，完成带有注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺。S6: After the molding process is completed, the mold is opened, and the preparation process of the thermoplastic polyurethane foamed sole with injection stripes is completed.
采用1:200比例的气体发泡剂与熔融的热塑性聚氨酯橡胶定量充分混合后形成TPU聚合物发泡体由4mm射嘴孔注入模具进行定型，生产的热塑性聚氨酯鞋中底，检测密度为0.22g/cm 3～0.33g/cm 3，回弹率为52％～70％，硬度值为45～60C，鞋底纹路分布对比4mm 2射嘴孔生产的鞋底较为稀疏，质量轻，回弹性和硬度适中，穿着最为舒适。 Use 1:200 ratio of gas blowing agent and molten thermoplastic polyurethane rubber to quantitatively and fully mix to form TPU polymer foam, which is injected into a mold with a 4mm nozzle hole for finalization. The produced thermoplastic polyurethane shoe midsole has a detection density of 0.22g /cm 3 ～0.33g/cm 3 , the resilience rate is 52%～70%, the hardness value is 45～60C, the sole pattern distribution is relatively sparse with 4mm 2 nozzle holes, and the soles produced by the nozzle holes are relatively sparse, light in weight, and moderate in resilience and hardness. , The most comfortable to wear.
实施例3：Example 3:
一种带注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺，包括以下步骤：A preparation process of thermoplastic polyurethane foamed shoe sole with injection stripe path includes the following steps:
S1：根据气体发泡剂在热塑性聚氨脂的含量添加气体发泡剂与热塑性聚氨脂的比例范围取1:25，通过失重式限量精准喂料机将热塑性聚氨酯原料放入双螺杆挤出机剪切，配合单螺杆加热装置进行加热处理形成熔融状态的热塑性聚氨酯；S1: According to the content of the gas blowing agent in the thermoplastic polyurethane, the ratio of the gas blowing agent to the thermoplastic polyurethane is 1:25, and the thermoplastic polyurethane raw material is put into the twin-screw extrusion through the loss-in-weight limited precision feeder Machine shearing, combined with single-screw heating device for heat treatment to form molten thermoplastic polyurethane;
S2：在加热处理时同时按步骤S1比例注入气体发泡剂，在挤出机筒注入气体发泡剂达到压力值为6kpa状态下与熔融热塑性聚氨酯由双螺杆挤出机继续剪切混合均匀形成聚合物～气体均相体系的混合物；S2: Inject the gas blowing agent according to the proportion of step S1 at the same time during the heating treatment, and the gas blowing agent is injected into the extruder barrel to reach a pressure value of 6kpa. The twin screw extruder continues to shear and mix uniformly with the molten thermoplastic polyurethane. Mixture of polymer-gas homogeneous system;
S3：继续通过单螺杆挤出机对聚合物～气体均相体系的混合物进行降温处理，使混合物在输送过程中产生熔体压力破坏材料内部聚合物～气体均相体系的平衡状态形成热塑性聚氨酯聚合物发泡体；S3: Continue to cool down the polymer-gas homogeneous system mixture through the single-screw extruder, so that the mixture will produce melt pressure during the conveying process, destroy the equilibrium state of the polymer inside the material-gas homogeneous system to form thermoplastic polyurethane polymerization物foam
S4：通过注射工艺用36mm的异形截流式多孔射嘴将制备好的热塑性聚氨酯聚合物发泡体射 出，将以发泡条的形式注射入下方的母模内，母模的温度设置为40℃，母模会匀速前后左右移动至堆叠填满，注射工艺采用注射缸储料压力50Kpa、注射压力100Kpa、注射速度为80cm 3/s、热塑性聚氨酯聚合物发泡体的熔体温度值为160℃，射料的时间为2s； S4: Inject the prepared thermoplastic polyurethane polymer foam with a 36mm special-shaped cut-off porous nozzle through the injection process, and inject it into the lower master mold in the form of foam strips. The temperature of the master mold is set to 40°C , The master mold will move back and forth at a constant speed until the stack is filled. The injection process adopts the injection cylinder storage pressure of 50Kpa, the injection pressure of 100Kpa, the injection speed of 80cm 3 /s, and the melt temperature of the thermoplastic polyurethane polymer foam is 160℃. , The shooting time is 2s;
S5：在热塑性聚氨酯聚合物发泡条猪舍填满母模的内腔后，母模移回到预设原点位置，同时并且与固定设置的公模采用自动上下合模的形式进行热压成型，公母模具排气孔开孔直径分别为0.5mm、1mm，公模排气孔数量为80个，母模排气孔数量为40个，定型温度控制在90℃，定型时间5min；S5: After the cavity of the female mold is filled in the thermoplastic polyurethane polymer foam barn, the female mold moves back to the preset origin position, and at the same time, it is hot-pressed with the fixed male mold in the form of automatic upper and lower mold clamping , The opening diameters of male and female mold vent holes are 0.5mm and 1mm, respectively, the number of male mold vent holes is 80, the number of female mold vent holes is 40, the setting temperature is controlled at 90℃, and the setting time is 5min;
S6：成型加工完毕后模具打开，完成带有注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺。S6: After the molding process is completed, the mold is opened, and the preparation process of the thermoplastic polyurethane foamed sole with injection stripes is completed.
采用1:50比例的气体发泡剂与熔融的热塑性聚氨酯橡胶定量充分混合后形成TPU聚合物发泡体由6mm射嘴孔注入模具进行定型，生产的热塑性聚氨酯鞋中底，检测密度为0.2g/cm 3～0.31g/cm 3，回弹率为48％～68％，硬度值为40～60C，鞋底纹路宽，分布对比16mm 2射嘴孔生产的鞋底较为稀疏。 Use 1:50 ratio of gas blowing agent and molten thermoplastic polyurethane rubber to quantitatively and fully mix to form TPU polymer foam, which is injected into the mold with a 6mm nozzle hole for shaping, and the produced thermoplastic polyurethane shoe midsole has a detection density of 0.2g /cm 3 ～0.31g/cm 3 , the resilience rate is 48%～68%, the hardness value is 40～60C, the sole has wide textures, and the distribution is relatively sparse compared to 16mm 2 nozzle holes.
以上实施例制备的鞋底内均无产生气泡，鞋底回弹效果好，具有良好的耐磨性。No bubbles are generated in the soles prepared in the above examples, and the soles have good resilience effect and good wear resistance.
以上所揭露的仅为本发明的几种较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。The above-disclosed are only a few preferred embodiments of the present invention, which of course cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (7)

  1. 一种带注射条纹路的热塑性聚氨酯发泡鞋底，其特征在于：所述发泡鞋底由热塑性聚氨酯添加气体发泡剂比例范围为1:25～200，在双螺杆与单螺杆配合下充分混合形成TPU聚合物发泡物，通过挤出注射灌注在模具内，热压合模定型制成，所述发泡鞋底上均布有宽度为1～60mm的注射条纹路，所述挤出注射条纹路之间设有深色隔离条纹理。A thermoplastic polyurethane foamed shoe sole with injection stripes, characterized in that the foamed shoe sole is made of thermoplastic polyurethane added with a gas blowing agent in a ratio ranging from 1:25 to 200, and is formed by fully mixing with a twin screw and a single screw. The TPU polymer foam is poured into a mold by extrusion injection, and is formed by thermocompression molding. The foamed shoe sole is uniformly distributed with injection strips with a width of 1-60 mm. The extrusion injection strips There is a dark isolation strip texture between.
  2. 一种带注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺，其特征在于，包括以下步骤：A preparation process of thermoplastic polyurethane foamed shoe sole with injection stripe path, which is characterized in that it comprises the following steps:
    S1：根据气体发泡剂在热塑性聚氨脂的含量添加气体发泡剂与热塑性聚氨脂的比例范围取1:25～200，通过失重式限量精准喂料机将热塑性聚氨酯原料放入双螺杆挤出机剪切，配合单螺杆加热装置进行加热处理形成熔融状态的热塑性聚氨酯；S1: According to the content of the gas blowing agent in the thermoplastic polyurethane, the ratio of the gas blowing agent to the thermoplastic polyurethane is in the range of 1:25～200, and the thermoplastic polyurethane raw material is put into the twin screw through the loss-in-weight limited precision feeder The extruder shears, and cooperates with the single-screw heating device to heat treatment to form the thermoplastic polyurethane in the molten state;
    S2：在加热处理时同时按步骤S1比例注入气体发泡剂，在挤出机筒注入气体发泡剂达到压力值为1～8kpa状态下与熔融热塑性聚氨酯由双螺杆挤出机继续剪切混合均匀形成聚合物～气体均相体系的混合物；S2: During the heating process, the gas blowing agent is injected according to the proportion of step S1 at the same time, and the gas blowing agent is injected into the extruder barrel to reach the pressure value of 1-8kpa and the molten thermoplastic polyurethane is continuously sheared and mixed by the twin-screw extruder. Uniformly form a mixture of polymer-gas homogeneous system;
    S3：继续通过单螺杆挤出机对聚合物～气体均相体系的混合物进行降温处理，使混合物在输送过程中产生熔体压力破坏材料内部聚合物～气体均相体系的平衡状态形成热塑性聚氨酯聚合物发泡体；S3: Continue to cool down the polymer-gas homogeneous system mixture through the single-screw extruder, so that the mixture will produce melt pressure during the conveying process, destroy the equilibrium state of the polymer inside the material-gas homogeneous system to form thermoplastic polyurethane polymerization物foam
    S4：通过注射工艺用异形截流式多孔射嘴将制备好的热塑性聚氨酯聚合物发泡体射出，将以发泡条的形式注射入下方的母模内，母模会匀速前后左右移动至堆叠填满，注射工艺采用注射缸储料压力10～150Kpa、注射压力10～150Kpa、注射速度为10～150cm3/s、热塑性聚氨酯聚合物发泡体的熔体温度值为140～220℃，射料的时间为1～6s；S4: Through the injection process, the prepared thermoplastic polyurethane polymer foam is injected with a special-shaped cut-off porous nozzle, and injected into the lower master mold in the form of foam strips. The master mold will move back and forth at a uniform speed to the stacking and filling. Full, the injection process adopts the injection cylinder storage pressure of 10～150Kpa, the injection pressure of 10～150Kpa, the injection speed of 10～150cm3/s, and the melt temperature of the thermoplastic polyurethane polymer foam is 140～220℃. The time is 1～6s;
    S5：在热塑性聚氨酯聚合物发泡条注射填满母模的内腔后，母模移回到预设原点位置，同时并且与固定设置的公模采用自动上下合模的形式进行热压成型，在热压成型的过程中，公母模具开设有排气孔，定型温度控制在50～90℃，定型时间5～15min；S5: After the thermoplastic polyurethane polymer foamed strip is injected to fill the cavity of the female mold, the female mold moves back to the preset origin position, and at the same time, it is hot-pressed with the fixed male mold in the form of automatic upper and lower mold clamping. In the process of hot pressing, the male and female molds are provided with vent holes, the shaping temperature is controlled at 50～90℃, and the shaping time is 5～15min;
    S6:成型加工完毕后模具打开，完成带有注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺。S6: After the molding process is completed, the mold is opened, and the preparation process of the thermoplastic polyurethane foamed sole with injection stripes is completed.
  3. 根据权利要求2所述的带注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺，其特征在于：所述气体发泡剂包括二氧化碳、氮气、丁烷、异丁烷、含氟气体、甲醇、乙醇、二甲醚。The preparation process of the thermoplastic polyurethane foamed shoe sole with injection stripes according to claim 2, wherein the gas blowing agent includes carbon dioxide, nitrogen, butane, isobutane, fluorine-containing gas, methanol, ethanol , Dimethyl ether.
  4. 根据权利要求2所述的带注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺，其特征在于：所述的双螺杆挤出机主要是负责加热熔融原料与发泡气体混合均匀，单螺杆主要是负责聚氨酯气体混合物输送降温，形成熔融状态的热塑性聚氨酯气体发泡物。The preparation process of thermoplastic polyurethane foamed shoe sole with injection stripe path according to claim 2, characterized in that: the twin-screw extruder is mainly responsible for heating and melting the raw material and the foaming gas to mix uniformly, and the single screw is mainly Responsible for the transportation and cooling of the polyurethane gas mixture to form a molten thermoplastic polyurethane gas foam.
  5. 根据权利要求2所述的带注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺，其特征在于：所述公模位置是固定圆盘机的转盘，母模是附在圆盘机，是由机械手自动拿到带有SYZ轴的 平台并定位，由伺服电机控制SYZ轴的平台上的母模的移动速度与定位，母模内腔层叠填满发泡条后，由机械手带动母模回到原来的圆盘机位置上，公模会自动与母模合模进行热压和合定型。The preparation process of thermoplastic polyurethane foamed shoe sole with injection stripe path according to claim 2, characterized in that: the position of the male mold is the turntable of the fixed disc machine, and the female mold is attached to the disc machine by a manipulator. The platform with the SYZ axis is automatically taken and positioned, and the moving speed and positioning of the master mold on the SYZ axis are controlled by the servo motor. After the cavity of the master mold is stacked and filled with foam strips, the robot drives the master mold back to the original In the position of the disc machine, the male mold will automatically be combined with the female mold for hot pressing and finalizing.
  6. 根据权利要求2所述的带注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺，其特征在于：所述公模设定温度60～90℃，母模温度30～70℃，公母模具开有排气孔，排气孔的开孔直径在0.5～30mm，排气孔分布数量为1～400个，定型处理时间为在5～15min。The preparation process of thermoplastic polyurethane foamed shoe sole with injection stripe path according to claim 2, characterized in that: the set temperature of the male mold is 60-90°C, the temperature of the female mold is 30-70°C, and the male and female molds are opened with The vent hole, the diameter of the vent hole is 0.5 to 30mm, the number of vent holes is 1 to 400, and the shaping treatment time is 5 to 15 minutes.
  7. 根据权利要求2所述的带注射条纹路的热塑性聚氨酯发泡鞋底的制备工艺，其特征在于：所述的异形截流式多孔射嘴的射嘴孔的面积由3mm 2～80mm 2，射嘴孔的分布数量为1～200个。 The preparation process of thermoplastic polyurethane foamed sole with injection stripe path according to claim 2, characterized in that: the area of the nozzle hole of the special-shaped cut-off porous nozzle is 3mm 2 ~ 80mm 2 , the nozzle hole The number of distribution is 1 to 200.
PCT/CN2020/075919 2020-01-06 2020-02-20 Thermoplastic polyurethane foam sole having injected textures and preparation process therefor WO2021138968A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010009466.3A CN113068898A (en) 2020-01-06 2020-01-06 Thermoplastic polyurethane foamed sole with injection stripe lines and preparation process thereof
CN202010009466.3 2020-01-06

Publications (1)

Publication Number Publication Date
WO2021138968A1 true WO2021138968A1 (en) 2021-07-15

Family

ID=76608876

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/075919 WO2021138968A1 (en) 2020-01-06 2020-02-20 Thermoplastic polyurethane foam sole having injected textures and preparation process therefor

Country Status (2)

Country Link
CN (1) CN113068898A (en)
WO (1) WO2021138968A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114801068A (en) * 2022-05-14 2022-07-29 锋特(福建)新材料科技有限公司 TPU foaming injection molding shoe material mold

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002085105A (en) * 2000-09-05 2002-03-26 Chankonshanshii Kofun Yugenkoshi Manufacture of shoe sole
CN101291789A (en) * 2005-10-19 2008-10-22 巴斯夫欧洲公司 Shoe soles based on foamed thermoplastic polyurethane (TPU)
CN103183955A (en) * 2011-12-28 2013-07-03 北京中能江龙科技开发有限公司 Novel foaming thermoplastic polyurethane elastomer material sole and preparation method thereof
CN104441409A (en) * 2014-11-04 2015-03-25 林仔孺 Production process of foamed TPU (Thermoplastic polyurethane) sole
CN109228444A (en) * 2018-10-26 2019-01-18 福建省安职教育服务有限公司 A kind of carbon dioxide, chloro fluoroethane thermoplastic polyurethane foam injection molding technology
CN109262935A (en) * 2018-09-12 2019-01-25 广东昂斯新材料技术有限公司 It is a kind of for manufacturing the frothing injection system of thermoplastic polyurethane sole, shoes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100256181B1 (en) * 1997-05-21 2000-05-15 박수관 Injection molding material
JP5642957B2 (en) * 2009-11-18 2014-12-17 積水化成品工業株式会社 Resin foam sheet
CN204278382U (en) * 2014-10-10 2015-04-22 瑞安市信德鞋模有限公司 A kind of sole injection moulding apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002085105A (en) * 2000-09-05 2002-03-26 Chankonshanshii Kofun Yugenkoshi Manufacture of shoe sole
CN101291789A (en) * 2005-10-19 2008-10-22 巴斯夫欧洲公司 Shoe soles based on foamed thermoplastic polyurethane (TPU)
CN103183955A (en) * 2011-12-28 2013-07-03 北京中能江龙科技开发有限公司 Novel foaming thermoplastic polyurethane elastomer material sole and preparation method thereof
CN104441409A (en) * 2014-11-04 2015-03-25 林仔孺 Production process of foamed TPU (Thermoplastic polyurethane) sole
CN109262935A (en) * 2018-09-12 2019-01-25 广东昂斯新材料技术有限公司 It is a kind of for manufacturing the frothing injection system of thermoplastic polyurethane sole, shoes
CN109228444A (en) * 2018-10-26 2019-01-18 福建省安职教育服务有限公司 A kind of carbon dioxide, chloro fluoroethane thermoplastic polyurethane foam injection molding technology

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114801068A (en) * 2022-05-14 2022-07-29 锋特(福建)新材料科技有限公司 TPU foaming injection molding shoe material mold

Also Published As

Publication number Publication date
CN113068898A (en) 2021-07-06

Similar Documents

Publication Publication Date Title
JP7430176B2 (en) Biodegradable and Industrially Compostable Injection Molded Micro-Flexible Foam and Method for Producing the Same
US6129798A (en) Process for manufacturing an ethylene vinyl acetate insole
US10266689B2 (en) Composition and process of manufacture for a shoe sole component for footwear
WO2021138968A1 (en) Thermoplastic polyurethane foam sole having injected textures and preparation process therefor
JP2002144366A (en) Foamed molding and article using foamed molding
CN111634040A (en) Injection-molded integrated multicolor thermoplastic elastomer foamed sole and manufacturing method thereof
CN109262935B (en) Foaming injection molding system for manufacturing thermoplastic polyurethane soles and shoes
JP2024038117A (en) Biodegradable, industrially compostable and recyclable injection molded microcellular flexible foam
CN112172219A (en) Preparation method of double-hardness die-pressed foamed sole
KR100571874B1 (en) METHOD OF MOLDING CROSSLINKED ETHYLENE-VINYL ACETATE FOAMS FOR SHOE COMPONENT USING LAYER OF THIN FILMS and SHOE COMPONENT USING THAT
CN110667222A (en) Multilayer composite product and preparation process thereof
KR100688154B1 (en) A shoe sole using the cork sponge and a method for manufacturing the same
CN109251380A (en) A kind of primary hollow sulfidization molding sole and preparation method thereof of two-color dual-density
CN114539595A (en) Preparation method of shoe material based on EVA modified popcorn insole
JPH0890688A (en) Synthetic resin vessel or the like and manufacture thereof
CN112873937A (en) Method for manufacturing multi-functional sole
CN111391229A (en) Leather product and forming method thereof
CN113831580B (en) Double-hardness insole and preparation method thereof
JP3168290B2 (en) Method for producing starch pellets and method for producing molded starch
KR920010270B1 (en) Manufacturing method of in sole use high elastic polyurethane
TWI387521B (en) Production Method of Biomass Polymer Shoes
WO2024044993A1 (en) Method for manufacturing multicolor supercritically-foamed shoe body, and multicolor foamed shoe body
WO2023115318A1 (en) Manufacturing method for environmentally friendly waste-free foamed shoe material, and shoe material semi-finished product and shoe body finished product thereof
TW201036787A (en) One-process molding method for manufacturing solid and foamed sole with compound rubber in one mold
TW202325520A (en) Eco-friendly method of manufacturing shoe material, semi-finished, and foam shoe material made thereby

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20913044

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20913044

Country of ref document: EP

Kind code of ref document: A1