Question 1

What are the main applications of &#8220;CAL-FOOD,&#8221; your calcium carbonate for food use?

Accepted Answer

It is primarily used for calcium fortification in food products and is highly valued for its safety and stable dispersion within food matrices.

Question 2

Which calcium carbonate has low moisture content or allows easy moisture removal during drying?

Accepted Answer

Generally, micron-sized heavy calcium carbonate has low moisture content. However, if you require a low-moisture colloidal calcium carbonate that can also impart viscosity to sealants and adhesives, we recommend "CALFORSEAL 15B."

Question 3

What is the difference between food-grades and industrial-grades?

Accepted Answer

They differ in standards for raw materials, process control, and contamination management. Our food-grade product "CAL-FOOD" is designed and managed to comply with food additive specifications, whereas industrial grade-products are manufactured to specifications and standards suited to industrial applications such as paints, resins, and rubber.

Question 4

Which grades are commonly used for sealants, adhesives, and plastisols?

Accepted Answer

"KALFAIN 500" is highly regarded for imparting viscosity and thixotropy, while "CARLEX 300" is well received for enhancing reinforcement and adhesion.

Question 5

Which applications and products have been attracting more inquiries recently?

Accepted Answer

We have seen an increase in inquiries for light-diffusion grades for lighting and displays, grades for environmentally conscious resins and paints, and AB grades aimed at improving film productivity.

Question 6

What kinds of specialty products do you offer?

Accepted Answer

Our specialty lineup designed for specialty applications includes acicular calcium carbonate grades, light-diffusion grades with optimized optical properties, fine-particle AB grades for films, high-whiteness and high-dispersion grades, and dedicated food-application grades.

Question 7

How is your calcium carbonate used in light diffusion applications for plastics?

Accepted Answer

"CALTEX" and "CUBE" are adopted for lighting covers and display components. They offer an excellent balance between light diffusion and transmittance, contributing to reduction of light unevenness and glare.

Question 8

What are the most established applications and uses for Maruo Calcium&#8217;s calcium carbonate?

Accepted Answer

We have an extensive track record in viscosity and thixotropy adjustment for sealants, adhesives, and plastisols, anti-blocking (AB) agents for films; light diffusion in plastics; opacity enhancement in paints and inks; reinforcement in rubber; and food applications.

Question 9

Would you describe applications and features of your AB agents for films?

Accepted Answer

"CUBE" is widely used to prevent blocking and impart slip properties in packaging films. It improves film opening and winding performance while maintaining transparency.

Question 10

Would you recommend calcium carbonate products to be used for automotive undercoats and body sealers?

Accepted Answer

We offer an extensive lineup within the KALFAIN and CARLEX series. Please refer to these product ranges for details.

Question 11

Could you provide samples?

Accepted Answer

Yes, we accept requests starting from small quantities. Please refer to our product information page and contact us regarding the product of interest. If you are unsure which product to choose, please feel free to consult us; our experienced staff will recommend the most suitable product based on your objectives and application.

Question 12

Are Safety Data Sheets (SDS) available for your products?

Accepted Answer

Yes, they are available. Please contact us through our inquiry form.

Question 13

I don&#8217;t understand the relationship between BET specific surface area and particle size.

Accepted Answer

A higher BET value indicates a smaller particle size, while a lower BET value indicates a larger particle size.

Question 14

Would you clarify the differences between manufacturing methods (such as light and heavy calcium carbonate), and how they affect product characteristics?

Accepted Answer

Generally, heavy calcium carbonate, produced by grinding ore, allows characteristics to be designed through particle shape and size, while light calcium carbonate, produced by chemical precipitation, can be designed through specific surface area and pore structure. We select the optimal manufacturing process according to the intended application.

Question 15

Why do you offer such a wide range of products, including the KALFAIN and CARLEX series?

Accepted Answer

Our fundamental philosophy is to design products that meet the specific needs of our customers. Even within a single category such as adhesives, our customers select from a wide variety of resins and plasticizers for their design purposes. By offering multiple calcium carbonate grades, we strive to provide products that precisely match the performance our customers require.

Question 16

What functions does the fine-particle calcium carbonate &#8220;KALFAIN-40&#8221; provide?

Accepted Answer

As its fine particles disperse throughout the resin, "CALFINE N-40" delivers exceptionally high viscosity. As a result, it is expected to provide thickening performance equal to or greater than that of organic thickeners such as amide wax, castor oil, and bentonite.

Question 17

In what applications is fine-particle calcium carbonate used?

Accepted Answer

Fine-particle calcium carbonate has a particle size of 20–40 nm, and its manufacturing process includes a technology unique to Japan. Adding only a small amount to sealants, adhesives, paints, or plastisols delivers high viscosity and effective anti-sagging performance. When used in combination with heavy calcium carbonate, it also helps reduce overall formulation costs.

Question 18

Q. Do you handle products other than calcium carbonate?

Accepted Answer

While calcium carbonate is our core product, we may also be able to propose other inorganic fillers or composite materials in some cases, depending on the application. Please contact us individually for further details.

Question 19

Q. How can I request a quotation for a product?

Accepted Answer

Please refer to our product information page and contact us. After confirming the details of your request, we will prepare a quotation for you.

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