Features

KOIZUMISEIMA CO., LTD., in collaboration with Fuekinori Kogyo Co., Ltd. has developed “Morokoshi Pellet,” a biomass composite material made from corn.

This innovative material helps reduce the use of petroleum-based plastics and lowers CO₂ emissions.
Alongside this development, we have also introduced the “Morokoshi Cap,” a cap for our Baron Box liquid containers, manufactured using Morokoshi Pellet.

1. Development of a Practical and Environmentally Friendly Alternative to Plastics

The development theme was “to create a plastic alternative that is both environmentally friendly and practical.”
Morokoshi Pellet was developed as a material suitable for caps of liquid containers, which require both moldability and functional performance.

Challenges in Developing Morokoshi Pellet
　To meet practical requirements at standards, equivalent to petroleum-based plastics
　To ensure the material is environmentally conscious

2. About the New Material “Morokoshi Pellet”

Morokoshi Pellet is a biomass composite material, with 51.3% of its content made from raw corn starch.
Because the pellets are produced using raw starch without further modification, Morokoshi Pellet does not fall under the category of biomass plastics. It is a new material that has not yet been classified.

The technology behind Fuekinori Kogyo’s starch-based adhesive has been applied in this development, contributing to the material’s performance and functionality.

Four Key Features of Morokoshi Pellet
(1) Specifications Comparable to Petroleum-Based Plastics
Morokoshi Pellet is a material with specifications equivalent to petroleum-based plastics.
The Morokoshi Cap made from Morokoshi Pellet has successfully passed the same performance tests as conventional petroleum-based plastic caps.

(2) Excellent Moldability
The material can be manufactured using existing injection and blow molding equipment and molds.
No pre-drying is required before molding.

(3) Compliant with the Food Sanitation Act
Morokoshi Pellet complies with the revised Food Sanitation Act, making it safe for use in food-related applications.

(4) Environmentally Friendly
The material reduces the use of fossil resources and plastics, as well as CO₂ emissions.
When incinerated, CO₂ emissions are approximately 50% lower compared to conventional plastics.

3. “Morokoshi Cap” Made with the New Material “Morokoshi Pellet”

The Morokoshi Cap is a cap for Baron Box (bag-in-box container) and spout bags, manufactured using the innovative Morokoshi Pellet as an alternative to petroleum-based plastics.

The cap consists of two parts—an outer cap and an inner cap—with the outer cap manufactured entirely from Morokoshi Pellet.

The role of a cap is to function as part of the container and prevent leakage of its contents.
During manufacturing, strict requirements must be met, including precise dimensional accuracy for fitting and threading, pressure resistance when sealed, and chemical resistance.

The Baron Box has a large capacity of 5 to 20 liters and is used for a wide variety of food products and chemicals.
As a result, it is required to meet stringent testing conditions.

The Morokoshi Cap meets the same testing standards as conventional caps made from petroleum-based plastics.
Morokoshi Pellet, the sole material used, complies with the Food Sanitation Act, and the inner cap—which comes into contact with the liquid contents—uses the same material as conventional products.
This ensures equivalent performance and safety to conventional caps.

In addition, compared to conventional caps, the Morokoshi Cap reduces the use of petroleum-based plastics by approximately 52%, and lowers CO₂ emissions generated from manufacturing to disposal by approximately 31.1%.

4. Continuing Development Combining Environmental Contribution and Practicality

The development of the Morokoshi Cap marked the first step in utilizing Morokoshi Pellet for Baron Box-related products.

Going forward, we aim to expand beyond caps and work on developing Morokoshi Pellet suitable for the Baron Box body itself—thin and flexible—which presents a greater technical challenge.

If you are considering the adoption of Morokoshi Pellet or the Morokoshi Cap, please do not hesitate to contact us.

YouTube