PBS Fully Biodegradable Plastics
Products similar to PBS mainly include polybutanedioic acid-adipic acid- butylene glycol (hereinafter referred to as PBSA), poly(terephthalic acid-adipic acid- butylene glycol) (hereinafter referred to as PBAT), poly(lactic acid) (hereinafter referred to as PLA), etc. The elongation at break of PBSA is good, but the heat deflection temperature is around 65℃; PBAT has good film-forming properties and is generally used for blown film, but its heat deflection temperature is 50~55℃, and it is expensive. Compared with them, PBS products have better temperature resistance, can be used in the temperature range of -30 ~ 100 ℃, can withstand boiling water temperature, a wider range of applications, more convenient in such as shipping, hotter environment, storage, transportation and use; and PLA compared to the toughness and temperature resistance of PBS than PLA, but hardness and transparency is not as good as PLA, these two products in the mechanical properties of each Each of these two products is good at mechanical properties. However, in terms of application areas, processing performance and storage, PBS has obvious advantages:
(1) PBS softening point is high, the application field is wider than PLA polylactic acid (PLA) is a chemically synthesized aliphatic polyester, its softening point is low, only 58 ℃, while the softening point of PBS can reach 101 ℃, PBS can be used in the temperature range of -30 ~ 100 ℃, can be applied in the boiling water environment, while PLA due to the limitations of the softening point, the The application area is somewhat restricted due to the limitation of softening point.
(2) PBS has excellent processing performance and is easier to process than PLA. The difference in processing performance is one of the biggest differences between PLA and PBS. PLA, on the other hand, has harsh processing conditions and poor adaptability, requiring not only a harsh processing environment (dry environment), but also specially modified processing equipment.
(3) PBS products are easier to store than PLA products PBS is a typical biodegradable material, only contact with sufficient microorganisms will degrade, so in the daily storage process, as long as no direct contact with microbial-rich soil, natural water bodies, long-term storage, will not degrade. The material must be packaged in aluminum-plastic packaging, and the storage period cannot exceed 2 years, and in non-sealed packaging, the storage period does not exceed 6 months, and the storage time is only a few hours at 50℃. Therefore, the storage cost of PLA products is high.
PBS is one of the best biodegradable plastic materials, and is used in a wide range of applications, such as packaging, tableware, cosmetic bottles and pharmaceutical bottles,
It can be used in packaging, tableware, cosmetic and pharmaceutical bottles, disposable medical products, agricultural films, pesticide and fertilizer slow-release
PBS has excellent overall performance and reasonable cost performance, and has good prospects for application.
PBS has excellent overall performance, reasonable cost performance and good application prospects.
Compared with other biodegradable plastics, PBS has excellent mechanical properties, close to PP and ABS plastics; good heat resistance, heat deformation temperature is close to 100℃, and the use temperature can exceed 100℃ after modification, so it can be used in the preparation of hot and cold beverage packaging and lunch boxes, overcoming the shortcomings of other biodegradable plastics with low heat resistance; very good processing performance, and can be used in all kinds of molding on the existing plastic processing equipment. processing, is currently the best performance of degraded plastics processing, while a large number of calcium carbonate, starch and other fillers can be blended to get low-priced products; PBS production can be carried out through a slight transformation of the existing general polyester production equipment, the current serious excess capacity of domestic polyester equipment, the transformation of production PBS for excess polyester equipment provides new opportunities. In addition, PBS only in compost, water bodies and other contact with specific microbial conditions before degradation, in the normal storage and use of the process is very stable performance. PBS aliphatic diacid, diol as the main raw material, both through petrochemical products to meet demand, but also through cellulose, dairy by-products, glucose, fructose, lactose and other natural renewable crop products produced by biological fermentation route. In this way, we can realize the green cycle production from nature and return to nature. Moreover, the raw materials produced by biofermentation process can significantly reduce the cost of raw materials, thus further reducing the cost of PBS.
GWELL PBS sheet production line:
It adopts single extruder or multiple extruders co-extrusion technology to produce different types of PBS sheets, such as single-layer A, three-layer ABA, five-layer ABCBA, and other different structures, which are widely used in thermoforming, printing, hardware packaging, electronic trays, flocking, food, clothing, tools, toys, stationery sheets, decorative sheets, etc.
* GWELL independently written electric control operating system
* Oblique horizontal sheet pressing structure, more convenient for operation and maintenance.
* Independent power of rollers, synchronous closed-loop control of line speed and extruder speed.
* Equipped with precision dispenser, even layering, adjustable ratio of each layer, digital precise control.
* The whole machine adopts PLC control to realize automatic control of parameter setting, data operation and feedback, alarm and other functions.
