技术领域technical field
本发明涉及塑料领域，确切地说是一种食品杯用微发泡片材。The invention relates to the field of plastics, in particular to a microfoamed sheet for food cups.
背景技术Background technique
由于传统的BOPS、PVC片材需专用设备生产，所以一般热成型企业所需BOPS、PVC片材多是外购的。加之PVC边角料企业自己无法利用，回收价格又很低，增加了企业的生产成本。另一个原因是PVC回收料易污染其它塑料，因此在生产中要格外注意，这就给生产操作带来一些麻烦随着塑料应用越来越广泛，急需要开发能够按需要平衡产品的刚性和韧性，使成本更优化，同时还具有极高的韧性和抗冲击性的，适用于高度尺寸稳定性的热成型食品包装，如乳制品杯，饮料杯、沙拉盘、熟食盘和带盖餐盒等的新型塑料片材。当前资源消耗过量的前提下，作为轻量化的 包装的一种工艺和包装方法，在不改变材料厚度，保持材料挺度的情况下，减小材料密度，以达到减轻重量的效果，提高绝缘性能，同时降低生产成本迫在眉睫。Since the traditional BOPS and PVC sheets need special equipment for production, most of the BOPS and PVC sheets required by general thermoforming enterprises are outsourced. In addition, the PVC leftovers cannot be used by the enterprises themselves, and the recycling price is very low, which increases the production cost of the enterprises. Another reason is that PVC recycled materials are easy to pollute other plastics, so extra attention must be paid in production, which brings some troubles to production operations. As plastics are more and more widely used, it is urgent to develop products that can balance the rigidity and toughness of products as needed. , to optimize the cost, but also has extremely high toughness and impact resistance, suitable for thermoformed food packaging with high dimensional stability, such as dairy cups, beverage cups, salad plates, deli plates and lunch boxes with lids, etc. new plastic sheet. Under the premise of excessive resource consumption, as a lightweight packaging process and packaging method, the material density is reduced without changing the thickness of the material and maintaining the stiffness of the material, so as to achieve the effect of reducing weight and improving insulation performance. , while reducing production costs is imminent.
微发泡剂主要为NaHCO3,在加热过程中遇热产生CO2和H2O，在经过塑化后的聚合物熔体中形成致密的气层，而达到降低PS片材密度的效果。The micro-foaming agent is mainly NaHCO3 , which generates CO2 and H2 O when heated during the heating process, and forms a dense air layer in the plasticized polymer melt to achieve the effect of reducing the density of the PS sheet.
发明内容Contents of the invention
本发明的目的是提供一种极高的韧性和抗冲击性的，适用于高度尺寸稳定性的热成型食品包装，如乳品杯、饮料杯、沙拉盘、熟食盘和带盖餐盒等的食品杯用微发泡片材。The purpose of the present invention is to provide a thermoformed food packaging with extremely high toughness and impact resistance, which is suitable for high dimensional stability, such as dairy cups, beverage cups, salad plates, deli plates and lunch boxes with lids, etc. The cup is made of micro-foamed sheet.
上述目的通过以下方案实现：The above purpose is achieved through the following schemes:
一种食品杯用微发泡片材，其特征在于：其是具有按照层A/层B/层A/层C依序排列的分层结构的四层片材；A microfoamed sheet for food cups, characterized in that: it is a four-layer sheet with a layered structure arranged in sequence according to layer A/layer B/layer A/layer C;
所述的层A是由下述重量份的原料制成：HIPS聚苯乙烯90-110，色母1-2，热塑性橡胶3-5，按重量百分比计四层片材结构中的两层层A分别各占片材总重量的10-15%；The layer A is made of the following raw materials in parts by weight: HIPS polystyrene 90-110, color masterbatch 1-2, thermoplastic rubber 3-5, two layers in the four-layer sheet structure by weight percentage A each accounts for 10-15% of the total weight of the sheet;
所述的层B是由下述重量份的原料制成：HIPS聚苯乙烯90-110，通用级聚苯乙烯6-8，热塑性橡胶3-5，色母1-3，发泡剂1-2，按重量百分比计占片材总重量的65-77%；The layer B is made of the following raw materials in parts by weight: HIPS polystyrene 90-110, general-purpose polystyrene 6-8, thermoplastic rubber 3-5, color masterbatch 1-3, foaming agent 1- 2. It accounts for 65-77% of the total weight of the sheet by weight percentage;
所述的层C指的是由通用级聚苯乙烯制成，按重量百分比计占片材总重量的3-5%；The layer C refers to being made of general-purpose polystyrene, accounting for 3-5% of the total weight of the sheet by weight percentage;
所述的一种食品杯用微发泡片材，其特征在于：所述的层A是由下述重量份的原料制成：HIPS聚苯乙烯100，色母1，热塑性橡胶4；The microfoamed sheet for a food cup is characterized in that: the layer A is made of the following raw materials in parts by weight: HIPS polystyrene 100, color masterbatch 1, thermoplastic rubber 4;
所述的层B是由下述重量份的原料制成：HIPS聚苯乙烯100，通用级聚苯乙烯,7，色母2，发泡剂1.1。The layer B is made of the following raw materials in parts by weight: HIPS polystyrene 100, general-purpose polystyrene, 7, color masterbatch 2, foaming agent 1.1.
所述的一种食品杯用微发泡片材，其特征在于：所述的色母为特白色母，所述的发泡剂为NaHCO3 。The microfoam sheet for food cups is characterized in that: the color masterbatch is extra white masterbatch, and the foaming agent is NaHCO3 .
所述的食品杯用微发泡片材其特征在于：其是由各原料通过共挤出工艺制得。The microfoamed sheet for food cups is characterized in that it is made of various raw materials through a co-extrusion process.
所述的食品杯用微发泡片材，其特征在于：The microfoamed sheet for food cups is characterized in that:
制备方法为：将每层板材的原料在各自的混合料斗中按比例搅拌均匀，充分干燥后，将挤塑机机身温度控制在200-220℃，再将分配好的各层原料挤出到同一分配器中，经模头挤出至压辊设备，挤压定型即得产品。The preparation method is as follows: mix the raw materials of each layer of board in their respective mixing hoppers in proportion, and after fully drying, control the temperature of the extruder body at 200-220°C, and then extrude the distributed raw materials of each layer into In the same distributor, it is extruded through the die head to the pressing roller equipment, and the product is obtained by extrusion and shaping.
所述的食品杯用微发泡片材，其特征在于：所述的模头为T型模头。The microfoamed sheet for food cups is characterized in that: the die head is a T-shaped die head.
本发明的有益效果为：The beneficial effects of the present invention are:
1、本发明能够按需要平衡产品的刚性和韧性，使成本更优化，具有极高的韧性和抗冲击性，能在零下20-零下30℃使用，可以循环使用降低产品成本；1. The present invention can balance the rigidity and toughness of the product as required, optimize the cost, have extremely high toughness and impact resistance, can be used at minus 20- minus 30°C, and can be recycled to reduce product cost;
2、本发明适应于乳品快餐饮料的一次性快速食品包装，通过发泡层的涉及减轻产品重量，节约原材料，同时提高性能，降低碳排量。2. The present invention is suitable for one-time fast food packaging of dairy fast food beverages. The foaming layer reduces product weight, saves raw materials, improves performance, and reduces carbon emissions.
具体实施方式Detailed ways
一种食品杯用微发泡片材，其是具有按照层A/层B/层A/层C依序排列的分层结构的四层片材；A microfoamed sheet for food cups, which is a four-layer sheet with a layered structure arranged in sequence according to layer A/layer B/layer A/layer C;
所述的层A是由下述重量份的原料制成：HIPS聚苯乙烯100，色母1，热塑性橡胶4；按重量百分比计四层片材结构中的两层层A分别各占片材总重量的10%；The layer A is made of the following raw materials in parts by weight: HIPS polystyrene 100, color masterbatch 1, thermoplastic rubber 4; two layers of layer A in the four-layer sheet structure are respectively accounted for by weight percentage 10% of the total weight;
所述的层B是由下述重量份的原料制成：HIPS聚苯乙烯100，通用级聚苯乙烯,7，色母2，发泡剂1.1，按重量百分比计占片材总重量的75%。The layer B is made of the following raw materials in parts by weight: HIPS polystyrene 100, general-purpose polystyrene, 7, color masterbatch 2, foaming agent 1.1, accounting for 75% of the total weight of the sheet by weight percentage %.
所述的层C指的是由通用级聚苯乙烯制成，按重量百分比计占片材总重量的5%；The layer C refers to being made of general-purpose polystyrene, accounting for 5% of the total weight of the sheet by weight percentage;
所述的色母为特白色母。发泡剂为NaHCO3。The color masterbatch is extra white masterbatch. The blowing agent is NaHCO3 .
所述的食品杯用微发泡片材其是由各原料通过共挤出工艺制得。The microfoamed sheet for food cups is made from various raw materials through a co-extrusion process.
所述的食品杯用微发泡片材制备方法为：将每层板材的原料在各自的混合料斗中按比例搅拌均匀，充分干燥后，将挤塑机机身温度控制在200℃，再将分配好的各层原料挤出到同一分配器中，经模头挤出至压辊设备，挤压定型即得产品。The preparation method of the micro-foamed sheet for food cups is as follows: the raw materials of each layer of the sheet are stirred evenly in proportion in their respective mixing hoppers, and after being fully dried, the temperature of the extruder body is controlled at 200°C, and then the The distributed raw materials of each layer are extruded into the same distributor, extruded through the die to the pressing roller equipment, and extruded to obtain the final product.
所述的模头为T型模头。Described die head is T-shaped die head.
本产品常温冲击强度43kj/m2,低温-42℃的冲击强度25.7kj/m。具有极高的韧性和抗冲击性，能在零下20-零下30℃使用。The normal temperature impact strength of this product is 43kj/m2, and the impact strength at low temperature -42℃ is 25.7kj/m2. It has extremely high toughness and impact resistance, and can be used at minus 20- minus 30°C.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210317885.9ACN102935752B (en) | 2012-08-31 | 2012-08-31 | Micro-foaming sheet for food cup |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210317885.9ACN102935752B (en) | 2012-08-31 | 2012-08-31 | Micro-foaming sheet for food cup |
| Publication Number | Publication Date |
|---|---|
| CN102935752A CN102935752A (en) | 2013-02-20 |
| CN102935752Btrue CN102935752B (en) | 2015-04-15 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210317885.9AActiveCN102935752B (en) | 2012-08-31 | 2012-08-31 | Micro-foaming sheet for food cup |
| Country | Link |
|---|---|
| CN (1) | CN102935752B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106275678A (en)* | 2015-06-02 | 2017-01-04 | 内蒙古伊利实业集团股份有限公司 | A kind of foaming bottle and preparation method thereof |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1396410A (en)* | 1972-05-16 | 1975-06-04 | Eps Research Dev Ltd | Panels boards or containers |
| US4528221A (en)* | 1982-05-11 | 1985-07-09 | Sekisui Kaseihin Kogyo Kabushiki Kaisha | Polystyrene foamed sheet suitable for forming |
| CN1729094A (en)* | 2002-12-20 | 2006-02-01 | 诺瓦化学公司 | Thermoplastic film for a disposable container made of expandable thermoplastic particles |
| CN1759041A (en)* | 2003-03-07 | 2006-04-12 | 日本合成化学工业株式会社 | Multilayered container |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1396410A (en)* | 1972-05-16 | 1975-06-04 | Eps Research Dev Ltd | Panels boards or containers |
| US4528221A (en)* | 1982-05-11 | 1985-07-09 | Sekisui Kaseihin Kogyo Kabushiki Kaisha | Polystyrene foamed sheet suitable for forming |
| CN1729094A (en)* | 2002-12-20 | 2006-02-01 | 诺瓦化学公司 | Thermoplastic film for a disposable container made of expandable thermoplastic particles |
| CN1759041A (en)* | 2003-03-07 | 2006-04-12 | 日本合成化学工业株式会社 | Multilayered container |
| Publication number | Publication date |
|---|---|
| CN102935752A (en) | 2013-02-20 |
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