Products Information - YAMANAKA INDUSTRY CO.,LTD. - Planing and Production of filters for beverage


An environmentally-friendly, biodegradable filter

Product number NW030

TEAROAD SOILON NW is a filter made with the biomass material known as polylactic acid, the base material of which is plant starch.
Burying this product into the ground after use causes microorganisms to completely break it down after being hydrolyzed into shoter fragmen.Such is the nature of this filter for beverage use created with mankind and the environment as a top priority.
TEAROAD SOILON NW features a more attractive price than the woven mesh filters in the SOILON series.


  1. Using plant starch as its base material, this Nonwoven Fabric Filter is manufactured through processes that include lactic acid fermentation and polymerization of lactic acid.
  2. No harmful matter is detected upon extraction using boiling water. Deemed to be compliant with food, additive and other standards under the Food Sanitation Act (No. 370).
  3. Upon burying SOILON NW in the ground, following hydrolysis, the matter is completely broken down by microorganisms, after which it is eventually turned into water and CO2 (materials cited). The speed of degradation varies largely depending on the temperature, moisture and PH level of the soil, as well as the types and number of microorganisms present.
  4. When burning SOILON NW,the harmful gas (dioxin etc.) is not generated. Also the generation of greenhouse gas (carbon dioxide) is less than usual plastic. (reference literature)
  5. Polylactic acid, the material used in SOILON NW, has reported to have bacteriostatic and mildew-proof properties.
  6. Plants, which are renewable, are used as the basic materials in SOILON NW, thereby helping to contribute to the development of a sustainable society. This aspect has enabled us to acquire "GreenPla" membership (No. 1023).

Environmental circulation of polylactic acid

Environmental circulation of polylactic acid

What's GreenPla


"GreenPla" is a registered trademark of the Japan BioPlastics Association (JBPA), which is a N.P.O. engaging in study, research and development to promote commercialization of plastics which are made from non-petroleum resources, and are biodegraded. Yamanaka Industry Co., Ltd. is a member of the JBPA "Mark". For more details, please access the JBPA homepage.


Filters for green tea, black tea, healthcare tea, herb tea and others

Physical properties

Product number Weight
Tensile strength
Elongation (%) Sealing adaptability
NW030 30 0.21 65.00 30.00 15.00 15.00 Ultrasonic seal
  • Material : Polylactic acid
  • Measuring Method : JIS L-1906:2000 Test methods for non -woven fabrics made of filament yarn.
  • * The above physical properties are measured, but are not guaranteed.

  • Contactフォームへ

Top of Page

YAMANAKA INDUSTRY CO.,LTD. - Production Planning and wrapping materials drinking filter -

  • 17 Ogino-cho, Hanazono, Ukyo-ku, KYOTO
  • 616-8044 JAPAN
  • TEL 81(75)-802-5397
  • FAX 81(75)-841-7848
  • ● Sales Department
  • TEL 81(75)-841-4682
  • FAX 81(75)-841-4757
  • URL: