Degradable bags usually refer to bag products that can gradually decompose and transform their high-molecular polymer structures into relatively simple, environmentally harmless small molecular substances within a certain period of time through various natural or biological actions under specific environmental conditions, and finally return to nature. The degradation process involves complex chemical reactions and biological processes. For example, with the participation of microorganisms (such as bacteria, fungi, etc.), or under the influence of natural factors like light, heat and water, the chemical bonds of the bags are broken and the high-molecular chains are fractured, which then causes the morphology and performance of the bags to change gradually until the degradation is completed.
Types of Biodegradable plastic materials:
Polylactic acid (PLA): It is a biodegradable plastic made from renewable biomass resources (such as plant starches from corn, sugarcane, etc.) through a series of processes like fermentation and polymerization. Degradable bags made of polylactic acid have good transparency and gloss, and are relatively beautiful in appearance. Moreover, their mechanical properties can meet the basic needs of daily use. For example, they have a certain tensile strength and toughness and can bear the loading of items of a certain weight. However, its thermal stability is relatively poor. It is prone to deformation in high-temperature environments, and its degradation speed is greatly affected by factors such as environmental temperature, humidity and types of microorganisms. Usually, it degrades relatively quickly in environments rich in organic microorganisms, such as in compost.
Poly(butylene adipate-co-terephthalate) (PBAT): It is a thermoplastic biodegradable polyester obtained by the condensation polymerization of adipic acid, terephthalic acid and 1,4-butanediol. Bags made of PBAT have good flexibility, moderate tensile strength and excellent processing performance, enabling them to be conveniently made into bags of various shapes and specifications. Meanwhile, its degradation performance is relatively outstanding. It can degrade relatively smoothly under various natural environmental conditions (such as in soil, fresh water, seawater and other environments). However, its raw material cost is relatively high, which restricts its wider application to a certain extent.
Starch-based plastics: They are mainly made by blending and modifying natural starches (such as corn starch, potato starch, etc.) with other degradable or non-degradable polymers. The biggest feature of this type of bags is that the sources of raw materials are extensive and the cost is relatively low. They have a certain degree of biodegradability. In natural environments such as soil, the starch part can be decomposed by microorganisms first, and then drive the whole bag to degrade gradually. However, its drawback lies in the fact that due to the strong hydrophilicity of starch itself, the performance of the bags may decline in humid environments, such as a decrease in strength. Moreover, if the starch content is too high, the overall mechanical properties of the bags will be rather poor.
The emergence and application of degradable bags have important environmental significance. They can effectively alleviate the problem of white pollution caused by the large accumulation of traditional plastic bags in the environment due to their difficulty in degradation, protect ecological environment elements such as soil, water bodies and air, maintain ecological balance and promote the harmonious coexistence of humans and nature. With the continuous progress of environmental protection technologies, the gradual reduction of costs and the further improvement and promotion of relevant policies and regulations, degradable bags are expected to be more widely used in more fields, gradually replacing traditional non-degradable bags and becoming one of the mainstream choices for bags used for packaging, carrying and other purposes in the future.
Product composition: PBAT+PLA+MD/ST
Product thickness: 0.02mm-0.06mm
Product width range: 180mm-600mm
Product applications: T-shirt bags, roll bags, flat bags, milk tea bags, Eight-fold garbage bags, roll garbage bags, drawstring garbage bags, express bags.
Biodegradable t-shirt bag for supermarkets, grocery shops, etc. Support customised size, thickness, material, printing and so on.
Biodegradable flat bags for electronics, parts, product packaging. Advantage: easy to take out, cheap, protect the product.
Biodegradable Gift Bags for boutiques, clothes shopping and more. High-end and elegant design, help your shop to enhance its image and bring customers the best shopping experience.
Biodegradable die-cut bags for boutiques, garment bags, bakeries, etc. Can be customised with size, printing etc
Customizable Design: We offer customization options to suit your branding needs. Our design team can work with you to create bags that reflect your brand's identity while promoting sustainability.
