What is PLA
What is PLA?
PLA (Polylactic Acid) is a type of biomass plastic made from biological resources (biomass) such as plants and animals. Unlike traditional plastics that rely on fossil fuels, PLA is produced from renewable plant-based resources such as corn, sugarcane, cassava, and even straw. Additionally, PLA is biodegradable and, under appropriate conditions, naturally decomposes after disposal. This makes it a widely used alternative to petroleum-based plastics in various fields, including food packaging, containers, and textile products.
PLA Made from Straw
Traditionally, PLA has been made from edible plants like corn and sugarcane, which contain large amounts of starch. As a result, much of the raw materials used in Japan have historically been imported. However, advances in technology have now made it possible to produce PLA from straw, a non-edible agricultural waste product.
Straw is a byproduct of farming activities and is often discarded or incinerated. By utilizing this byproduct effectively, we can simultaneously reduce waste and make better use of available resources. Furthermore, the use of straw reduces the risk of competing with food production and helps stabilize the supply of raw materials. The use of agricultural waste not only supports low-cost, sustainable production but also provides a new source of income for farmers.
Moreover, the use of straw contributes to reducing CO2 emissions. By using straw, which would normally be burned, as a raw material for PLA, we can help suppress carbon emissions into the atmosphere. This technology is gaining attention worldwide as an innovative approach that combines environmental protection with economic benefits.
Some of our products are made with PLA derived from straw.
Straw is a byproduct of farming activities and is often discarded or incinerated. By utilizing this byproduct effectively, we can simultaneously reduce waste and make better use of available resources. Furthermore, the use of straw reduces the risk of competing with food production and helps stabilize the supply of raw materials. The use of agricultural waste not only supports low-cost, sustainable production but also provides a new source of income for farmers.
Moreover, the use of straw contributes to reducing CO2 emissions. By using straw, which would normally be burned, as a raw material for PLA, we can help suppress carbon emissions into the atmosphere. This technology is gaining attention worldwide as an innovative approach that combines environmental protection with economic benefits.
Some of our products are made with PLA derived from straw.
Environmental
Characteristics
Low Carbon Footprint
The manufacturing process of PLA is more energy-efficient compared to traditional petroleum-based plastics, and it emits less CO2 during production, contributing to the reduction of global warming. Additionally, as the plants used as raw materials grow, they absorb carbon dioxide, further reducing greenhouse gas emissions when considering the entire carbon footprint from production to disposal.
Renewability
PLA is made from renewable, plant-based resources such as corn, sugarcane, and cassava, and can also be produced from agricultural waste like straw. It is a sustainable material that does not rely on petroleum-based plastics.
Eco-Friendly Decomposition
PLA is biodegradable under specific conditions, helping to reduce waste issues. When properly processed in industrial composting facilities, PLA decomposes into water and carbon dioxide within weeks to months, making it harmless to the natural environment. Additionally, it prevents the release of harmful substances into soil and water sources, and reduces the risk of wildlife choking on debris, contributing to the protection of ecosystems.
Improvement in Waste Management Costs
PLA is a recyclable material. By establishing proper recycling systems, it can contribute to reducing industrial waste. Additionally, when processed in industrial composting facilities, PLA can be composted and incorporated into the organic waste composting process.
Low Emissions During Incineration
PLA releases very few harmful gases, such as dioxins or furans, during incineration, reducing the environmental impact of waste disposal. It can be safely processed even in situations that require clean incineration.
Promotion of Eco-Friendly Design
Many PLA products have obtained eco-label certifications, making them recognized by consumers as environmentally friendly choices. The use of PLA in companies promotes sustainable product design and manufacturing processes, contributing to an increased environmental awareness among businesses.
Product
Characteristics
Mechanical Properties
PLA is also strong enough to compete with conventional plastic products, resulting in a hard, durable finish. As a thermoplastic resin, it can be easily processed through methods such as injection molding, extrusion molding, and blow molding. It can be used for products and parts that require strength, offering both durability and versatility for a wide range of applications, from everyday items to components that need to withstand wear and tear.
Heat Resistance
By using modified PLA or additives, products with enhanced heat resistance have also been developed. This allows PLA to be applied in products such as food containers and cutlery that need to withstand temperature changes.
Barrier Properties
PLA has excellent gas barrier properties against oxygen and carbon dioxide, making it suitable for use in food and beverage containers to prevent oxidation. However, its barrier properties against water vapor are somewhat lower, so combining it with other materials may be necessary depending on the application.
Biocompatibility
PLA is non-toxic and safe for biological use. It is widely used in food packaging and the medical field. Since it is safe to come into contact with food and pharmaceuticals, it is suitable for medical applications such as surgical sutures, drug delivery systems, and absorbable implants.
Transparency
PLA has a high degree of transparency, making it ideal for products and packaging that require a clear appearance. This characteristic enhances the aesthetic appeal and allows for greater design flexibility.
Color Versatility
PLA can be dyed in a variety of colors, providing high flexibility in color choices. This versatility allows for a broader range of product designs, enhancing visual appeal.