What is LimexTM

Limestone is a sustainable raw material, with abundant reserves all over the world. It is 100% self-sufficient and said to be almost inexhaustible. We believe that this sustainable material can save the world.

Limestone, which is the raw material of LIMEX is a resource that can be self-sufficient even in Japan, where resources are scarce. The estimated recoverable years of limestone continue to grow, with 24 billion tons of resources reserved in Japan alone, and limestone is said to be a resource with a very low risk of depletion compared to oil, water, and forest resources. Since paper alternative products can be manufactured with almost no use of water or forest, it could be manufactured in many places. Also, by promoting local production for local consumption, a compact supply chain can be constructed, which could reduce impact on the environment. Because it is a resource that is abundant everywhere, we believe it can save the world.

Limestone Reserve

Superiority of Limestone

In the raw material procurement process, petroleum-based resin are manufactured by fractional distillation of crude oil and naphtha and polymerizing the extracted monomers. The impact of climate change is caused by the consumption of energy through the heating process. However, calcium carbonate, the main raw material of LIMEX, is produced by crushing limestone. Due to this difference in process, Limestone can reduce CO2 emissions by about 50 times compared to petroleum-based resins.

Mining and processing of limestone is easier than petroleum and metal. Because it is abundant all over the world, it has excellent supply stability and is inexpensive. Products such as plastics and rubber deteriorate due to environmental factors such as exposure to sunlight, but the physical characteristics of limestone are more stable. It is a resource that is not easily affected by environmental factors

Co2 Emitted during Raw Material Procurement

Co2 Emitted during Combustion

Flexible Moulding Using LIMEXTM

LIMEX is suitable for diverse moulding methods including injection moulding, extrusion moulding, vacuum moulding, and blow moulding. Though LIMEX is a composite material, it does not require custom equipment and can be processed using traditional methods and machinery. LIMEX is used by more than 6,000 companies and municipalities for a variety of purposes. (As of June 2021)

LIMEXTM Manufacturing Process

LIMEX is an advanced material produced from calcium carbonate (CaCO3), which is derived from limestone, and a small amount of polymeric resin added as a binder. These materials are heated and kneaded in a twin screw extruder, creating a molten, homogeneous composite containing over 50% calcium carbonate by body weight. Next, the composite is heated and pressurized treated under LIMEX’s proprietary manufacturing process, resulting in material properties ideal for post-processing.

Pellets

LIMEX pellet is manufactured by pelletizing, the process of molding the molten composite into the shape of a pellet. LIMEX pellet is also manufactured by pelletizing edge waste produced through manufacturing and printing process or used LIMEX sheets collected from consumers. Since the amount of petroleum-based resin contained in conventional plastic products can be reduced, LIMEX is used as a material to “reduce plastic”.

Sheets

LIMEX sheet is manufactured by T-die sheet extrusion of the molten composite, and stretching process controlling a porous structure in order to create whiteness and lightness. Next, specific coating agent is applied onto the surface of LIMEX sheet depending on its application, enhancing surface properties for various kinds of printing process. Stone paper and LIMEX Sheet are different products.

Pellets

LIMEX pellet is manufactured by pelletizing, the process of molding the molten composite into the shape of a pellet. LIMEX pellet is also manufactured by pelletizing edge waste produced through manufacturing and printing process or used LIMEX sheets collected from consumers. Since the amount of petroleum-based resin contained in conventional plastic products can be reduced, LIMEX is used as a material to “reduce plastic”.

Sheets

LIMEX sheet is manufactured by T-die sheet extrusion of the molten composite, and stretching process controlling a porous structure in order to create whiteness and lightness. Next, specific coating agent is applied onto the surface of LIMEX sheet depending on its application, enhancing surface properties for various kinds of printing process. Stone paper and LIMEX Sheet are different products.

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