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Comparative Analysis of the Components of Glass Fresh - keeping Box and Plastic Storage Container

2016-10-28 09:13:58

In summer, the food is easy to deteriorate, not eaten food wasted too much, the right choice for the food preservation method is that every family is very concerned about food and health are closely related to the choice of brand food containers are getting more and more Family attention, for example; we often use two kinds of crisper, glass and plastic crisper crisper that fresh better? Which is the most healthy and harmless food contact? 

glass jars with lids
1, glass crisper
There are tempered glass crisper and heat-resistant glass crisper
Advantages: material safety, high transparency, heat-resistant glass can withstand high temperatures.
Disadvantages: tempered glass will burst high-temperature, heavy and fragile products, should not be carried, airtight bad.
2, plastic PP material preservation box
Non-toxic, tasteless, small density, strength stiffness, hardness and heat resistance are better than low-pressure polyethylene, can be used in about 100 degrees. Has a good electrical properties and high-frequency insulation from humidity, density 0.90-0.91, high heat resistance, toughness and chemical resistance are very good. Food and plastic products, the most commonly used one.
Disadvantages: low temperature brittle, not wear, easy to aging. 
glass jars with lids
3, plastic PET material
Milky white or light yellow, highly crystalline polymer, the surface smooth and shiny. In a wide temperature range with excellent physical and mechanical properties. Heat to 70 ℃, only suitable for warm or cold drinks, loaded with high-temperature liquid, or heat is easy to deformation.
Such as mineral water bottles, so do not take bottled hot water in mineral water.
4, plastic PC material
It is a non-crystalline thermoplastic resin with excellent properties such as excellent electrical insulation, extensibility, dimensional stability and chemical corrosion resistance, high strength, self-extinguishing, flame retardant, non-toxic and coloring. advantage.
Disadvantages: the disadvantage is that compared with the hardness of the metal, the appearance of more easily scratched, PC plastic case of heat release of bisphenol A, in the use of this plastic containers to pay special attention. Many cups, bottles are using this material. 
glass jars with lids
5, TritanTM material crisper
1) No BPA, is the safest food contact material: in the polymerization process without BPA components in the course of the release will not be BPA, in line with environmental requirements and FDA (US Food and Drug Administration) certification;
2) high molecular density, antioxidant, long-term storage of food odor-free residue, no pigmentation: as glass is generally clear and transparent, transmittance> 90%, haze <1%, a crystal-like luster. Can be anti-detergent, cleaning agents, hydrocarbon solvents, oils, perfumes and other corrosion; in the hot and humid environment to hydrolysis.
3) high impact strength, can be used for high vacuum storage, to prevent atmospheric compression deformation: in accordance with ISO international standards, "no gap impact" is not broken, "notch impact" strength close to 1000J / m, Is more than 300 times that of glass.
4) high temperature, can be used for direct heating microwave: 200 degrees high temperature deformation, no odor release. 
glass jars with lids
5) stress is small, strong and durable, after the fall is not damaged: injection molding, the product residual stress than the PC small, no need to do the follow-up annealing. The use of the product in the process due to residual stress cracking less chance. From the second floor (5 m height) free fall without damage to the crack.
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