Plastic packaging materials

1、它具有重量輕、使用方便、阻隔性、滲透性、耐熱性、耐寒性、耐腐蝕性好、外觀色彩鮮艷、美觀等特點(diǎn)。因其原料來源豐富、成本低、性能優(yōu)異，被廣泛應(yīng)用于食品包裝中，逐漸取代了玻璃、金屬、紙張等傳統(tǒng)包裝材料，極大地改變了食品包裝的外觀。值得注意的是，塑料包裝材料存在一個突出的缺點(diǎn)，不易降解，焚燒時會產(chǎn)生有毒氣體。而且塑料包裝材料是塑料制品中使用壽命短的品種，一般一個月?！齻€月，不超過一年，此后大部分城市固體廢物進(jìn)入垃圾處理系統(tǒng)，有的則隨意丟棄，造成“白色污染”。

1. It has the characteristics of light weight, convenient use, barrier, permeability, heat resistance, cold resistance, good corrosion resistance, bright color appearance, and aesthetics. Due to its rich source of raw materials, low cost, and excellent performance, it is widely used in food packaging, gradually replacing traditional packaging materials such as glass, metal, and paper, greatly changing the appearance of food packaging. It is worth noting that plastic packaging materials have a prominent drawback: they are not easily degradable and can produce toxic gases during incineration. And plastic packaging materials are the varieties with a short service life among plastic products, usually one month Three months, no more than a year, after which most of the urban solid waste enters the garbage treatment system, and some are randomly discarded, causing "white pollution".

2、塑料包裝材料在廢棄物中所占的比例很大，對環(huán)境的污染在各種包裝材料中也很嚴(yán)重。目前的處理方案是回收利用和降解塑料的開發(fā)應(yīng)用相結(jié)合。此外，由于塑料制品本身存在缺陷，其耐濕性和阻隔性普遍不如金屬和玻璃容器，因此改善現(xiàn)有的塑料性能、開發(fā)新品種、提高強(qiáng)度和阻隔性、減少用量、重復(fù)使用、分類回收等非常重要。

2. Plastic packaging materials account for a large proportion of waste and cause serious environmental pollution among various packaging materials. The current treatment plan is a combination of recycling and the development and application of degradable plastics. In addition, due to the inherent defects of plastic products, their moisture resistance and barrier properties are generally not as good as those of metal and glass containers. Therefore, improving the performance of existing plastics, developing new varieties, increasing strength and barrier properties, reducing dosage, reusing, sorting and recycling are very important.

二是紙質(zhì)包裝材料

Secondly, paper packaging materials

1、紙質(zhì)和紙質(zhì)包裝容器在現(xiàn)代包裝工業(yè)體系中占有重要地位，占所有包裝材料總量的40%～50%。與其他材料相比，它具有一系列獨(dú)特的優(yōu)點(diǎn):加工性能好、印刷性能好、機(jī)械性能好、復(fù)合加工方便、成行性好、衛(wèi)生性好、原材料來源廣泛、品種多樣、成本低廉、易于大規(guī)模生產(chǎn)。紙質(zhì)包裝容器重量輕、緩沖性好、應(yīng)用廣泛、廢物可回收、無白色污染。隨著人們意識的增強(qiáng)和生活實際需要，植物纖維快餐盒的開發(fā)和天然綠色包裝材料的開發(fā)將成為未來紙制品食品包裝材料的趨勢。

1. Paper and paper packaging containers play an important role in the modern packaging industry system, accounting for 40% to 50% of the total amount of all packaging materials. Compared with other materials, it has a series of unique advantages: good processing performance, good printing performance, good mechanical performance, convenient composite processing, good processability, good hygiene and safety, wide source of raw materials, diverse varieties, low cost, and easy large-scale production. Paper packaging containers are lightweight, have good cushioning properties, are widely used, waste can be recycled, and have no white pollution. With the increasing awareness of environmental protection and the practical needs of daily life, the development of plant fiber fast food boxes and natural green packaging materials will become the trend of paper food packaging materials in the future.

2、此外，隨著包裝技術(shù)的快速發(fā)展，可食用包裝紙是現(xiàn)代食品包裝的重要發(fā)展方向。這種包裝具有重要的和經(jīng)濟(jì)價值。目前國外有兩種可食用的紙張，一種是以蔬菜為主要原料，成型后干燥蔬菜;另一種是將淀粉、糖糊化，加入其他食品添加劑，以類似造紙的方式成型。從應(yīng)用和發(fā)展前景來看，以蔬菜為原料的綠色產(chǎn)品具有更大的發(fā)展?jié)摿Α?/div>