Abstract: This article introduces the excellent characteristics of non-woven fabrics and non-woven environmental protection bags. Through experimental comparison, it is found that non-woven environmental protection bags are better than ordinary plastic bags in terms of durability and degradation performance, thereby reducing the impact of ordinary plastic bags. White pollution has strengthened people's awareness of environmental protection.

Keywords: non-woven fabric; environmental protection; performance test; application

As people's awareness of environmental protection has increased, the "white pollution" caused by plastic bags has attracted the attention of various countries. Countries around the world have formulated regulations for shopping plastic bags to restrict or prohibit their use. Various relevant mandatory policies and regulations in my country have been promulgated one after another. From June 1, 2008, all major supermarkets across the country have stopped providing plastic shopping bags for free [1]. How to develop alternative products that are conducive to environmental protection and generally accepted by low-income groups has become a research hotspot in solving the problem of plastic bags. Among several alternatives, non-woven shopping bags are considered to be the best alternatives to plastic bags due to their short process flow, high output, rapid variety, wide raw material sources, long service life, and degradability. . This article mainly discusses the bursting strength and abrasion resistance of non-woven eco-friendly shopping bags, in order to encourage people to use eco-friendly bags to protect the earth and humans.

1 Introduction of non-woven fabrics

1.1 The concept of non-woven fabrics

The production of non-woven fabric breaks through the conventional textile processing principle. It is a textile material that does not require spinning and weaving. As long as the short fibers or filaments for textile are oriented or randomly arranged to form a fiber network structure, it is used It can be formed by strengthening by mechanical, thermal bonding or chemical methods.

1.2 The main properties of non-woven fabrics

Non-woven fabrics are laminated with filaments into a net shape, with high porosity, good light transmission, strong moisture permeability, high air permeability, non-toxic and non-irritating characteristics [2]; in addition, it can be recycled more Reusable, degradable or recyclable, and has the advantages of lightness, softness, elasticity, corrosion resistance, and washability. Non-woven fabrics have fast production speed, short process flow, low cost, high output, wide raw material sources and uses, and rich colors.

1.3 The production process of non-woven fabrics

According to different processing technologies, the production process of non-woven fabrics can be divided into: needle-punched non-woven fabrics, spunlace non-woven fabrics, wet-laid non-woven fabrics, stitch-bonded non-woven fabrics, heat-bonded non-woven fabrics, meltblown non-woven fabrics, Spunbond non-woven fabrics, pulp air-laid non-woven fabrics, etc. Among them, non-woven environmental protection bags are mostly heat-sealed non-woven fabrics.

2 Characteristics of non-woven shopping bags

Plastic bags commonly used in daily life are non-degradable, or the degradation period can take decades or even hundreds of years. Due to the non-degradable properties of ordinary plastic bags, soil and groundwater are contaminated. In addition, a complete plastic bag can only be used to store garbage or throw away after the items are carried from the supermarket to the residence. There is also a serious waste problem.

The environmentally friendly shopping bag is safe and hygienic during use, and can be recycled many times; the used shopping bag can be degraded, or can be recycled and reused [3].

3 Performance test of non-woven shopping bag

3.1 Test materials

Several samples of non-woven bags and polyester fiber, polypropylene fiber, polyethylene plastic bags.

3.2 Test equipment

   Use YG(B)026 electronic fabric strength tester according to FZ/T 60005-1991 to test the bursting strength of fabric; use YG(B)522 disc type fabric wear-resisting machine according to FZ/T 60019-1994 to test the fabric's durability Friction performance.

3.3 Test principle and steps

3.3.1 Bursting strength test method:

Cut 4 pieces of non-woven bag samples with R="5 cm, and mark them as 1#, 2#, 3#, 4#. Similarly, take another 4 pieces of ordinary polyethylene plastic bags of the same size and mark them as 5#, 6#, 7#, 8#, uniformly adjust the humidity for 3 hours under laboratory conditions; put 8 samples into the cloth clamping ring and screw them tightly, and then place them flat on the cloth chuck rack ; Press the start button, after the sample is completely capped, the instrument returns to its original state to retrieve the sample backup and record the data. Complete 8 samples according to this method one by one.

3.3.2 Test method for wear resistance:

Cut 4 pieces of non-woven bag samples with R=" 5cm, and mark them as 1#, 2#, 3#, 4#. Similarly, take another 4 pieces of ordinary polyethylene plastic bags of the same size and mark them as 5#, 6#, 7#, 8#, uniformly adjust the humidity for 3 hours under laboratory conditions, put eight samples into the cloth clamping ring and screw them tightly, and place them on the disc-type fabric wear-resistant machine ; Press the start button and observe the degree of wear of the sample. When the sample is broken, press the stop button and record the data.

4 Results and discussion

4.1 Bursting strength

The burst strength test results are shown in Table 1.

Table 1 Bursting strength test results

Specimen     Breaking strength/N      Tensile length/mm     Elongation/%    Time/s

   1#                      189.3                                   21.0                        20.3             9.9

   2#                      172.2                                  19.0                         19.6             9.6

   3#                      159.6                                  18.0                         19.3             9.2

   4#                      163.7                                  20.0                         19.8             9.7

   5#                        1.8                                     5.0                           5.9              2.6

   6#                        1.9                                     6.0                           5.3              2.4

   7#                        1.9                                     6.0                           5.6              2.5

   8#                        1.6                                     5.0                           5.1              2.3

It can be seen from Table 1 that the average breaking strength of non-woven bags is higher than 170.0 N, while the maximum breaking strength of ordinary plastic bags is less than 2.0 N. This strength reflects the relationship between their strength and carrying capacity. From the above data, it can be seen that the carrying capacity of a non-woven environmental protection bag is equivalent to more than one hundred ordinary plastic bags.

4.2 Abrasion resistance

The abrasion resistance test results are shown in Table 2.

Table 2 Abrasion test results

Sample       1#               2#              3#              4#              5#             6#            7#               8#

Times        176             168            164            172               3               4              4                  5

    It can be seen from Table 2 that the wear resistance of the non-woven environmental protection bag is very good, about 169 times on average, while the ordinary polyethylene plastic bag is about 4 times, the difference is more than 40 times. In terms of wear resistance, a non-woven environmental protection bag is equivalent to dozens of ordinary polyethylene plastic bags. Therefore, non-woven environmental protection bags will replace ordinary polyethylene plastic bags and become an indispensable convenience bag in people's daily life.

5 Application prospects

With the rapid development of our country's economy and the continuous improvement of people's quality of life, people's awareness of environmental protection is increasing day by day. Non-woven environmental protection bags produced by using natural fibers or biodegradable fibers can meet the requirements of environmental protection and saving. If polyamide fiber is added to the production of non-woven fabrics, it can make it have better load-bearing capacity and durability. In addition, non-woven bags that have been processed after water and oil repellency, antibacterial and easy decontamination are not easy to be stained by water and oil, and they also have antibacterial properties, and it is more convenient to clean when necessary. The shopping bag is small in size after being folded, convenient to carry and store, and meets the requirements of repeated use. With the maturity of non-woven processing technology and the decline of processing costs, non-woven environmental protection bags will have a good application prospect.

references

[1] Ni Bingxuan, Jiao Xiaoning. Performance test and application analysis of non-woven eco-friendly shopping bags[J]. Industrial Textiles, 2009(1): 29-34.

[2] Zhang Jing. my country's non-woven fabric mainstream technology and its application research [J]. Science and Technology Communication, 2011 (10): 73-75.

[3] Wang Shanshan. Low-carbon and environmentally friendly non-woven technology [J]. Textile and Apparel Weekly, 2010(4): 38-40.