Under the requirements of the country’s new “plastic limit order”, the demand for biodegradable materials is increasing. However, the biodegradable modified masterbatches produced by the existing technology on the market are mostly made by blending and modifying petroleum-based and bio-based degradable materials or modified by adding starch. Need to consume a lot of biomass raw materials, such as corn starch. When the global food supply is still insufficient, the widespread use of this material will put greater pressure on food supply. At the same time, the current production of bio-based degradable materials is difficult to expand rapidly due to technical barriers and other issues, and there have been problems such as insufficient supply and rising prices. These circumstances are very unfavorable to the implementation of the policy of replacing non-biodegradable materials with biodegradable materials in the new version of the “plastic restriction order” in terms of disposable plastic products. In order to reduce the use of bio-based degradable materials and at the same time reduce the production and manufacturing costs of biodegradable packaging, Sunkey has developed a new type of biodegradable modified masterbatch. The masterbatch is made by combining a single polymer petroleum-based biodegradable material such as PBAT or PBS with inorganic powder (calcium carbonate, talc, titanium dioxide), and is prepared by modification. The inorganic powder content is 50%, which can be Blow the film directly, or mix with PBAT or PBS in any ratio to blow various packaging films.
The advantages are as follows:
1. Because the raw material of the biodegradable modified material is inorganic powder combined with petroleum-based biodegradable materials, so the inorganic powder will not produce carbon emissions during the degradation process of this material, and the degraded inorganic powder Returning to nature and reducing carbon emissions are more conducive to environmental protection. At the same time, it is of great significance in reducing material costs and reducing resource consumption.
2. Since the modified material does not use degradable materials such as polylactic acid and starch, which use food as raw materials, there will be no competition between plastic packaging and humans and animals for food, which is very beneficial to ensure food safety. Because starch is not used As a filler, there is no need to add any small molecular substances such as glycerin, plasticizer, etc., no small molecules will be precipitated, no pollution of the packaged material, non-toxic and harmless, and more beneficial to food safety.
BT5510
BT5510 is prepared by combining a single polymer PBAT and inorganic powder through modification, without any other polymers and small molecule additives, mixed with 20%-50% PBAT as needed to blow all kinds of handbags; Packaging film such as bags.
| Density g/cm3 | 1.42 |
| Melt mass flow rate g | 2-3 |
| Melting temperature℃ | ≥125 |
| Processing temperature ℃ | 140-160 |
BT5520 (outside)
BT5520 is prepared by combining a single polymer PBAT and inorganic powder through modification. It does not contain any other polymers and small-molecule additives. It can be directly used for blowing films, blowing all kinds of handbags, garbage bags, and other packaging films.
| Density g/cm3 | 1.35 |
| Melt mass flow rate g | 2.5-3.5 |
| Melting temperature℃ | ≥125 |
| Melting temperature℃ | 140-160 |
Grade BT5730
BT5730 is prepared by combining a single polymer PBAT and inorganic powder through modification. It does not contain any other polymers and small-molecule additives. It can be directly used for blowing film, blowing all kinds of handbags, garbage bags, and other packaging films.
| Density g/cm3 | 1.31 |
| Melt mass flow rate g | 3-4 |
| Melting temperature ℃ | ≥125 |
| Processing temperature ℃ | 140-160 |
BT5640
BT5640 is prepared by combining a single polymer PBAT and inorganic powder through modification. It does not contain any other polymers and small-molecule additives. It can be directly used for blowing films, blowing all kinds of handbags, garbage bags, and other packaging films.
| Density g/cm3 | 1.30 |
| Melt mass flow rate g | 3-4 |
| Melting temperature℃ | ≥125 |
| Processing temperature ℃ | 140-160 |
Modified polylactic acid (PLA) specification
Brand: BL1210
BL1210 is modified by our company using polylactic acid resin and introducing strong polar groups. The modified material has a polylactic acid content of 99.5% and is highly transparent. It can be mixed with PBAT or PBS in any ratio and used for blowing various types of Films, injection moldings, sheets, and other products that have very good compatibility and processing stability.
| Density g/cm3 | 1.2 |
| Melt mass flow rate g | 8 |
| Melting temperature ℃ | 155 |
| Processing temperature ℃ | 170-210 |