CN105346179A - 一种轻量化、节能环保托盘及制造方法 - Google Patents

一种轻量化、节能环保托盘及制造方法 Download PDF

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CN105346179A
CN105346179A CN201510843035.6A CN201510843035A CN105346179A CN 105346179 A CN105346179 A CN 105346179A CN 201510843035 A CN201510843035 A CN 201510843035A CN 105346179 A CN105346179 A CN 105346179A
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Abstract

本发明涉及一种轻量化、节能环保托盘及制造方法，提供了一种托盘材料，其特征在于包括：B和C的双层复合体叠加16-3000层而成的叠加复合体，所述B为高融体强度聚丙烯（HMSPP）发泡物，所述C为玻纤增强聚丙烯（玻纤含量为10-40%）、增韧聚丙烯或碳酸钙聚丙烯（碳酸钙含量10%-30%），其具有轻量化、低成本、高强度、可回收、快装快卸的特点。

Description

一种轻量化、节能环保托盘及制造方法
技术领域
本发明涉及一种托盘材料及制备方法。
背景技术
托盘是用于集装、堆放、搬运和运输的放置作为单元负荷的货物和制品的水平平台装置。作为与集装箱类似的一种集装设备，托盘现已广泛应用于生产、运输、仓储和流通等领域。托盘作为物流运作过程中重要的装卸、储存和运输设备，与叉车配套使用在现代物流中发挥着巨大的作用。托盘给现代物流业带来的效益主要体现在：可以实现物品包装的单元化、规范化和标准化，保护物品，方便物流和商流，托盘又名栈板，夹板。托盘以塑料材质为主。塑料外壳存在脆、硬的问题，有的时候会发生破损和开裂的状况，影响物品的使用寿命。
随着劳动力成本的增高以及国家一带一丝的快速发展，势必要尽量降低劳动力和物流成本。而现在的托盘制品密度大于0.90g/cm3，具有热胀冷缩系数大，低温时易变脆、不耐磨、易老化等缺点，并存在动植物检疫问题以及成本过高过重等问题。
发明内容
本发明提供了一种轻量化、低成本、高强度、可回收、快装快卸的带盘运输托盘。
本发明的目的是通过以下措施实现的：
一种托盘材料，其特征在于包括：B和C的双层复合体叠加16-3000层而成的叠加复合体，所述B为高融体强度聚丙烯(HMSPP)发泡物，所述C为玻纤增强聚丙烯(玻纤含量为10-40％)、增韧聚丙烯或碳酸钙聚丙烯(碳酸钙含量10％-30％)。本发明所述的叠加是B料和C料的物理成层粘合，不发生化学反应和物料的无序混合。本发明大大提高了材料的应用性能，如力学强度、阻隔性等等。优选地，上述高融体强度聚丙烯与C的重量比为(80～90)∶(10～30)。
上述高融体强度聚丙烯发泡物的发泡剂D为AC发泡剂。发泡剂优选用量为总重量的1-5％。
为了覆盖、着色等，上述托盘材料，还可以包括A-无规聚丙烯，，其组成按重量份数计为：A-无规聚丙烯5-10份、高融体强度聚丙烯80-90份、C-玻纤增强PP(玻纤含量为10-40％)、增韧PP或碳酸钙PP(碳酸钙含量为10％-30％)。
A中可以添加F-色母料，其用量占1wt‰-4wt％。
上述A-无规PP加入了抗氧剂。抗氧剂优选为[3-(3，5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯，其用量为3-8wt％。
上述增韧pp的增韧剂优选为橡胶，其用量为10-40wt％。
具体地，上述材料按照A-(BC)n-A的排列方式复合。其中n为BC双层结构的层数；n＝16～3000。
本发明的另一目的在于提供上述材料的制备方法。其通过以下措施实现的：
上述材料的制备方法，将B、C分别经混炼塑化挤出，经分配成B和C的双层复体，双层复体叠加16-3000层形成叠加复合体，将其与其它混炼塑化挤出物经分配挤出复合发泡材料；所述挤出温度控制在160-280℃。
上述材料的制备方法，包括以下步骤：
(1)在无规PP中分别加入抗氧剂和色母料后投入A挤出机经混炼塑化挤出，高融体强度聚丙烯(HMSPP)和发泡剂按比例混匀后投入B挤出机料斗内经混炼塑化挤出，C投入C挤出机料斗内经混炼塑化挤出；挤出加工温度控制在160-250℃，压力在12-20Mpa；
(2)将步骤(1)所得B挤出料和C挤出料通过分配器分成B、C的双层复合体，然后叠加挤出16-3000层的叠加复合体；叠加复合体、A挤出料，通过分配机经分配挤出，经过T型头模具形成A、BC、BC…A(A-(BC)n-A)的复合发泡材料；其中步骤(1)和(2)的加工温度控制在160-280℃，压力在12-20Mpa；
(3)经压制、定型、冷却、切割为要求的板材；
(4)将制备好的PP复合发泡板材，送入烘箱烘软，温度在180-300℃，时间为60-180s，烤软的板材送入不同模具的压机进行压制、保压、冷却、定型、切边得到不同的托盘，边角料回收再次利用。托盘重量为6-8kg/L。
有益效果
1.本发明的材料具有可回收、无毒等特性，真正实现了绿色、环保的多用途特性。
2.本发明材料物理性能、耐高温性能优异。
3.本发明的材料是轻量化、低成本、高强度、可回收、快装快卸的带盘运输托盘材料。
具体实施方式
下面结合具体实施例对本发明作进一步阐述，但本发明并不限于以下实施例。所述方法如无特别说明均为常规方法。所述原材料如无特别说明均能从公开商业途径而得。
实施例1
一种托盘材料，各组分的配比如下所示：A-无规PP10份、高融体强度聚丙烯80-90份、C-增韧PP。
A中添加1wt‰-4wt％的F-色母料，3-8wt％[3-(3，5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯作为抗氧剂。
C-增韧pp的增韧剂为橡胶，其用量为10-40wt％。
制备方法按以下步骤：
(1)在无规PP中分别加入抗氧剂和色母料后投入A挤出机经混炼塑化挤出，高融体强度聚丙烯(HMSPP)和发泡剂按比例混匀后投入B挤出机料斗内经混炼塑化挤出，C投入C挤出机料斗内经混炼塑化挤出；挤出加工温度控制在160-250℃，压力在12-20Mpa；
(2)将步骤(1)所得B挤出料和C挤出料通过分配器分成B、C的双层复合体，然后进入叠加机叠加挤出16-3000层的叠加复合体；叠加复合体、A挤出料，通过分配机经分配挤出，经过T型头模具形成A、BC、BC…A(A-(BC)n-A)的复合发泡材料；其中步骤(1)和(2)的加工温度控制在160-280℃，压力在12-20Mpa；
(3)经压制、定型、冷却、切割为要求的复合发泡板材；
(4)将制备好的复合发泡板材，送入烘箱烘软，温度在180-300℃，时间为60-180s，烤软的板材送入不同模具的压机进行压制、保压、冷却、定型、切边得到不同的托盘，边角料回收再次利用。托盘重量为6-8kg/m3。产品密度(0.3-0.65)×103kg/m3。
本产品(尺寸1830*915*15mm)的性能如表1所示。
表1
本产品表面光滑、平整，无伤痕，凹凸、裂纹、杂质等，色泽均匀一致。
耐温性测试：将产品放置于100℃，保持60min后，产品无气泡、裂痕和软化现象，继续加热到180℃，保持90min，尺寸膨胀率0.1％，再快速降温到零摄氏度(10s内迅速转移至0℃的环境)，保持2h，采用2mm钉子钉在产品上，无开裂现象。再次进行物理性能测试，其性能相对于表1无明显变化。
产品长期(12个月以上)分别或者交替置于90℃和-30℃环境中，其性能不变。
耐腐蚀实验：分别浸泡于饱和氢氧化钙溶液和20％的氯化氢，48h，产品无变化。

Claims (10)

1.一种托盘材料，其特征在于包括：B和C的双层复合体叠加16-3000层而成的叠加复合体，所述B为高融体强度聚丙烯（HMSPP）发泡物，所述C为玻纤增强聚丙烯（玻纤含量为10-40%）、增韧聚丙烯或碳酸钙聚丙烯（碳酸钙含量10%-30%）。
2.如权利要求1所述的托盘材料，所述高融体强度聚丙烯与C的重量比为（80～90）：（10～30）。
3.如权利要求1所述的托盘材料，所述高融体强度聚丙烯发泡物的发泡剂D为AC发泡剂；发泡剂用量优选为1-5wt%。
4.如权利要求1-3任一所述的托盘材料，玻纤增强聚丙烯的玻纤含量为10-40%，碳酸钙聚丙烯的碳酸钙含量为10-30wt%。
5.如权利要求1-4任一所述的托盘材料，还可以包括A无规聚丙烯；其用量按重量份数计为：A-无规聚丙烯5-10份、高融体强度聚丙烯80-90份、C-玻纤增强PP、增韧PP或碳酸钙PP10-30份。
6.如权利要求1-5任一所述的托盘材料，A中添加F-色母料或抗氧剂，其用量占1wt‰-4wt%；抗氧剂优选为[3-(3,5-二叔丁基-4-羟基苯基)丙烯]季戊四醇酯，其用量为3-8wt%。
7.如权利要求1-6任一所述的托盘材料，所述增韧ｐｐ的增韧剂优选为橡胶，其用量为10-40wt%。
8.如权利要求5、6或7所述的托盘材料，所述材料按照A-（BC）n-A的排列方式复合；其中n为BC双层结构的层数；n=16～3000。
9.如权利要求1-8任一所述的托盘材料的制备方法，包括以下步骤：将B、C分别经混炼塑化挤出，经分配成B和C的双层复体，双层复体叠加16-3000层形成叠加复合体，将其与其它混炼塑化挤出物经分配挤出复合发泡材料；所述挤出温度控制在160-280℃。
10.如权利要求9所述的托盘材料的制备方法，包括以下步骤：
（1）在无规PP中分别加入抗氧剂和色母料后投入A挤出机经混炼塑化挤出，高融体强度聚丙烯和发泡剂按比例混匀后投入B挤出机料斗内经混炼塑化挤出，C投入C挤出机料斗内经混炼塑化挤出；挤出加工温度控制在160-250℃，压力在12-20Mpa；
（2）将步骤（1）所得B挤出料和C挤出料通过分配器分成B、C的双层复合体，然后叠加挤出16-3000层的叠加复合体；叠加复合体、A挤出料，通过分配机经分配挤出，经过T型头模具形成A-（BC）n-A的复合发泡材料；其中步骤（1）和（2）的加工温度控制在160-280℃，压力在12-20Mpa；
（3）经压制、定型、冷却、切割为板材；
（4）将制备好发泡板材，送入烘箱烘软，温度在180-300℃，时间为60-180s，烤软的板材进行压制、保压、冷却、定型、切边得到托盘。
CN201510843035.6A 2015-11-26 2015-11-26 一种轻量化、节能环保托盘及制造方法 Pending CN105346179A (zh)

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