CN107283972A - 一种聚丙烯复合塑料、塑料碗及其制备方法 - Google Patents

一种聚丙烯复合塑料、塑料碗及其制备方法 Download PDF

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CN107283972A
CN107283972A CN201710521800.1A CN201710521800A CN107283972A CN 107283972 A CN107283972 A CN 107283972A CN 201710521800 A CN201710521800 A CN 201710521800A CN 107283972 A CN107283972 A CN 107283972A
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polypropylene
layer
protective layer
composite plastic
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王湘林
周毅
曹鹏
张金菊
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Hunan Skill Development Co Ltd Of Central-South Pattern Cisco
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Hunan Skill Development Co Ltd Of Central-South Pattern Cisco
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76498—Pressure
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76531—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76545—Flow rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B32B2250/242—All polymers belonging to those covered by group B32B27/32
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/10—Composition of foam characterised by the foam pores
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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Abstract

本发明公开了一种聚丙烯复合塑料，包括保护层Ⅰ、基材层、发泡层和保护层Ⅱ，基材层为彩色PP，所述保护层Ⅰ和保护层Ⅱ为原色PP，所述发泡层为PP微孔发泡。还公开了一种用上述塑料制成的塑料碗及其制备方法。本发明采用彩色基材层和原色保护层，既可以满足塑料制品对色彩美观的要求，又可保证没有着色剂等与食物接触，保证安全、健康。同时设有的PP微孔发泡层，具有优异的微波适应性，同时又有良好的隔热性能，可加工制成各种食品盛放容器。

Description

一种聚丙烯复合塑料、塑料碗及其制备方法
技术领域
本发明属于高分子技术领域，具体涉及一种聚丙烯复合塑料、塑料碗及其制备方法。
背景技术
聚丙烯(PP塑料)是继尼龙之后发展的又一优良树脂品种，它是一种高密度、无侧链、高结晶的线性聚合物，具有优良的综合性能。未着色时呈白色半透明。食用级PP就是可以直接接触食品的塑料(制品)。
现有的塑料碗一般采用食品级PP原料制成，但随着消费者对健康的重视程度日益提高，人们关注PP塑料碗本身所用的材料是否健康、卫生、安全，而且还要求塑料碗耐用，要有优越的耐冲击性，重压或撞击时不易碎裂，不会留下刮痕。
现有的塑料碗虽然采用食品级PP原料制成，可微波，但是为了美观，会使用着色剂，而且微波加热后，塑料碗很烫手，不方便拿取。
发明内容
为了解决上述问题，本发明提供一种聚丙烯复合塑料，包括保护层Ⅰ、基材层、发泡层和保护层Ⅱ，基材层为彩色PP，所述保护层Ⅰ和保护层Ⅱ为原色PP，所述发泡层为PP微孔发泡。
优选地，所述保护层Ⅰ和保护层Ⅱ还可以GFR-PP复合材料层。
一种聚丙烯复合塑料碗，包括碗底和碗壁，所述碗底和碗壁采用上述聚丙烯复合塑料制成。
优选地，所述聚丙烯复合塑料碗的保护层Ⅰ和保护层Ⅱ的厚度为0.1-0.4mm，所述发泡层的厚度为0.6-1.2mm，所述基材层的厚度为0.4-1mm。
所述聚丙烯复合塑料碗还包括保温盖，所述保温盖与碗壁接触处设有凹槽，所述凹槽内设有弹性密封圈；所述碗壁上设有至少一组对称设置斜向的卡槽，所述卡槽上边均设有多个卡齿，所述保温盖上设有与卡齿相配合的对称设置的卡凸。
一种聚丙烯复合塑料碗的制备方法，采用注塑成型方法制成，具体包括以下步骤：
（1）定量加料；
（2）熔融塑化；
（3）将超临界状态的二氧化碳或氮气注入发泡层的熔融原料中；
（4）施压注射；
（5）充模冷却；
（6）起模取件。
优选地，所述施压注射的工艺参数设定如下：
本发明有益效果：
（1）采用彩色基材层和原色保护层，既可以满足塑料制品对色彩美观的要求，又可保证没有着色剂等与食物接触，保证安全、健康。
（2）设有的PP微孔发泡层，具有优异的微波适应性，同时又有良好的隔热性能，可加工制成各种食品盛放容器。
（3）设有的保温盖，可延长碗盛放食物的保温时间。
（4）设有斜向的卡槽，卡槽上边设置的多个卡齿，可根据需要调整保温盖的密封程度，还可延长保温盖的使用寿命。
附图说明
图1为本发明中聚丙烯复合塑料的结构示意图；
图2为本发明中塑料碗的结构示意图；
图3为图2中B处放大图；
图4为实施例4的结构示意图；
图5是图4中C处放大图；
图6为保温盖的结构示意图；
图7为图6中D处放大图；
图中，1 是保护层Ⅰ，2是基材层，3是发泡层，4是保护层Ⅱ，5是塑料碗，6是碗底，7是碗壁，8是保温盖，9是卡槽，10是卡齿，11是弹性密封圈，12是卡凸。
具体实施方式
下面将结合本发明的实施例，对本发明实施例中的技术方案进行清楚、完整地描述。
实施例1
如图1所示，一种聚丙烯复合塑料，包括保护层Ⅰ、基材层、发泡层和保护层Ⅱ。
本实施例中基材层为彩色PP，所述保护层Ⅰ和保护层Ⅱ为食品级透明原色PP，所述发泡层为PP微孔发泡。
一种聚丙烯复合塑料碗的制备方法，采用注塑成型方法制成，具体包括以下步骤：
（1）定量加料；
（2）熔融塑化；
（3）将超临界状态的二氧化碳或氮气注入发泡层的熔融原料中；
（4）施压注射；
（5）充模冷却；
（6）起模取件。
其中，所述施压注射的工艺参数设定如下：
一段 二段 三段 四段
压力（bar） 80 65 60 80
温度（℃） 220 200 200 220
流量（%） 20 30 25 20
位置（mm） 40 40 40 40
实施例2
本实施例与实施例1不同之处在于，所述保护层Ⅰ和保护层Ⅱ为GFR-PP复合材料层。
实施例3
如图2-3所示，一种聚丙烯复合塑料碗，包括碗底和碗壁，所述碗底和碗壁采用实施例1中所述聚丙烯复合塑料制成。其中，所述聚丙烯复合塑料碗的保护层Ⅰ和保护层Ⅱ的厚度为0.1-0.4mm，所述发泡层的厚度为0.6-1.2mm，所述基材层的厚度为0.4-1mm。
实施例4
本实施例与实施例1不同在于， 所述聚丙烯复合塑料碗还包括保温盖，所述保温盖与碗壁接触处设有凹槽，所述凹槽内设有弹性密封圈；所述碗壁上设有至少一组对称设置斜向的卡槽，所述卡槽上边均设有多个卡齿，所述保温盖上设有与卡齿相配合的对称设置的卡凸。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (7)

1.一种聚丙烯复合塑料，其特征在于，包括保护层Ⅰ、基材层、发泡层和保护层Ⅱ，基材层为彩色PP，所述保护层Ⅰ和保护层Ⅱ为原色PP，所述发泡层为PP微孔发泡。
2.根据权利要求1所述的聚丙烯复合塑料，其特征在于，所述保护层Ⅰ和保护层Ⅱ还可以GFR-PP复合材料层。
3.一种聚丙烯复合塑料碗，其特征在于，包括碗底和碗壁，所述碗底和碗壁采用权利要求1-2任一项所述聚丙烯复合塑料制成。
4.根据权利要求3所述的聚丙烯复合塑料碗，其特征在于，所述聚丙烯复合塑料碗的保护层Ⅰ和保护层Ⅱ的厚度为0.1-0.4mm，所述发泡层的厚度为0.6-1.2mm，所述基材层的厚度为0.4-1mm。
5.根据权利要求4所述的聚丙烯复合塑料碗，其特征在于，所述聚丙烯复合塑料碗还包括保温盖，所述保温盖与碗壁接触处设有凹槽，所述凹槽内设有弹性密封圈；所述碗壁上设有至少一组对称设置斜向的卡槽，所述卡槽上边均设有多个卡齿，所述保温盖上设有与卡齿相配合的对称设置的卡凸。
6.一种聚丙烯复合塑料碗的制备方法，其特征在于，采用注塑成型方法制成，具体包括以下步骤：
（1）定量加料；
（2）熔融塑化；
（3）将超临界状态的二氧化碳或氮气注入发泡层的熔融原料中；
（4）施压注射；
（5）充模冷却；
（6）起模取件。
7.根据权利要求6所述的聚丙烯复合塑料制备方法，其特征在于，所述施压注射的工艺参数设定如下：
一段 二段 三段 四段 压力（bar） 80 65 60 80 温度（℃） 220 200 200 220 流量（%） 20 30 25 20 位置（mm） 40 40 40 40
。
CN201710521800.1A 2017-06-30 2017-06-30 一种聚丙烯复合塑料、塑料碗及其制备方法 Pending CN107283972A (zh)

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