The weather's cool food plastic bags heating deposit to harm?

by:Kolysen     2020-07-07
The weather gradually cool, everyone will find vendors will buy breakfast plastic packaging good soya-bean milk or milk soak in hot water, so that when we drink would be warm; If you buy food or drink some cold, some people will choose microwave heating slightly, but many plastic packaging of food in a heated will faint after plastic taste, these is the legendary plasticizer and other additives, is harmful to human body? Chemical engineering, nanjing university professor lu, general food plastic products are polyethylene and polypropylene, for they were soaked in the water heating should be safe. At the same time, a lot of food will add some plastic products with other additives, such as release agent and lubricant, in high temperature, some components more active additives may break, but the high temperature can't be we would be less than 100 ℃ hot water temperature. Nearly two years, the new packaging of Chinese beverage market gradually more up, at present, used in the beverage packaging plastic type mainly has several kinds: & emsp; 1、PE( Polyethylene) : PE is one of the world's largest synthetic resin production, is one of the biggest plastic packaging materials of consumption. Polyethylene products is divided into three of low density, medium density and high density. High density polyethylene ( HDPE) Due to the high crystallinity, the hardness, air tightness and mechanical strength, good chemical resistance are so heavily used blow molding hollow container such as made into bottles. Using PE heat sealing performance is good, the production of a variety of containers made of composite materials, can be dressed up the lemon juice, fruit juice and other drinks.   2、PVC( Polyvinyl chloride) :  PVC can be roughly divided into three classes of hard ware, soft ware and paste products. With note blow method production PVC bottles without stitches, bottle, bao hou uniform can be dressed up gas beverage such as cola, soft drinks, etc. ; Adopting extrusion blow molding production PVC bottle is only applicable to holding fruit juice and mineral water.   3、PP( Polypropylene) :  The development of transparent polypropylene bottles is a hotspot at home and abroad in recent years, plastic packaging. With transparent modifier & ndash; — Successful development of the nucleating agent in PP. 0. 1% - — 0. Sorbitol 4% shrinkage xylene ( Benzaldehyde) Nucleating agent, produced by the high transparent PP bottles can be widely used in thermal sterilization, such as concentrated juice needed hot filling beverage packaging, the price is appropriate, compression resistance to temperature, PS, ABS, PET, PE bottle of new rivals.
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