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The representative of polylactic acid biodegradable materials

 

Seven priorities - packaging

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Differentiated competitive advantages of polylactic acid materials in packaging products

Absolute safety (natural source, no harmful substances precipitated out)

 

Biodegradability (under composting conditions, completely degraded in 3-6 months)

 

Widely used (Can meet the vast majority of packaging material usability requirements).

 
 
 
Packaging is a popular field of market application of polylactic acid. The consumption of packaging market accounts for 70% of the total consumption of polylactic acid.
 
 
 
Polylactic acid packaging materials are commonly used for direct contact with food packaging because they meet food-grade requirements. Such as bottled water, bottled fruit juice, yogurt, etc.
 

Nature

PLA

PS

PET

Tensile strength/Mpa

53

45

58

Elongation at break/%

4.1

3

5.5

Bending strength/Mpa

98

76

88

Bending modulus/Gpa

3.7

3.0

2.7

Izod impact strength/(J/m)

29

21

59

Density/(g/cm3)

1.26

1.05

1.4

Flame retardancy(UL94)

HB

HB

HB

Light transmittance/%

94

90

 

 

The State encourages the use of biodegradable materials in express packaging.

The General Administration of Quality Supervision and Inspection and the National Standard Committee of China have issued a series of national standards for the new edition of Express Packaging Products. According to the requirements of reduction, greening and recycling, five aspects of modification were made, and the related content of the standard was supplemented and improved, making up for the deficiency of the old version of the national standard green environmental protection content. The new edition of the national standard will come into effect on September 1, 2018. For the first time, it is clearly proposed that "biodegradable plastics should be used in express packaging bags", and increased performance requirements for biological decomposition. According to statistics, the total use of plastic bags in China's express industry in 2016 was about 14.7 billion, of which about 6.8 billion were used directly by express delivery; about 3.4 billion were used directly by envelopes and 99% were used directly by express enterprises; the total use of packaging boxes was about 8.6 billion; and about 3.7 billion were used directly by express delivery industry. "In 2017, China's express delivery industry has completed a total of 400.6 billion pieces, an increase of 28% year-on-year, the corresponding use of express packaging supplies is still huge."

In 2016, 14.7 billion plastic bags were used in China's express delivery industry. Among them, 6.8 billion plastic bags are directly used for express delivery.