What is the Imabari Towel Project? History, Tradition, Challenge

Quality standards on Imabari Towel

Revision(2009.04.24)

Test Items Test Methods Judgment Standards
Characteristics of Towel Absorbency JS-L1907 / Sedimentation Within 5 seconds
(In case of no subsidence, within 5 seconds after washing with a washing machine.)
Rate of thread removal JS-L0217 /“How to wash: Rule-137”(Towel Examination Rules) Piles: less than 0.2%
Non-twisted threads: less than 0.5%
Shirring: less than 0.4%
Pile resistance to being pulled out (Towel Examination Rules) More than BT・KT 2.45 cN / pile
More than FT・WT 2.16 cN / pile
Strength of dye Resistance to light JIS-L0842 / Carbon Arc Method More than 4 degrees(More than 3 degrees for pastels and vivid colors)
Resistance to being washed JIS-L0844 / A- No.2 Method More than 4 degrees for discoloration
More than 4 degrees for stains
Resistance to sweat JIS-L0848 More than 4 degrees for discoloration
More than 3 ~ 4 degrees for stains
Resistance to friction JIS-L0849 / (Type Ⅱ) More than 4 degrees for dryness More than 2 ~ 3 degrees for moisture
(For dark colors and pigment coloring, below the levels mentioned above by 0.5.)
Strength of towel cloth Strength against being pulled out JIS-L1096 (Rule A) /(Labeled-Strip-Rule) More than 147N for length
More than 196N for width
Tensile strength JIS-L1096 (Rule A) / Mullen Form-Rule More than 392.3KPa/cm2
Size change rate LIS-L1096 (Rule G) / By electric washing machine Within ± 7%
 
Organic substance Formaldehyde content Health & Welfare Ministry- Rule No. 34
Acetylaceton Rule
Less than 75 ppm(Чg/g) for anybody except under 24- month-old-babies and infants
Less than A-A0 0.05 for under 24-month-old-babies and infants
Outward size     The bigger side of
+3% ~-1%
+3cm ~-1cm
Number of needle handling     More than 10 stitches per hour (return-stitch )

Note

  1. Absorbency Test : Needs consideration on materials except cotton.Towel blankets and scarves are excluded.
  2. Thread Removal Rate Test : Needs consideration on materials except cotton.Lower the percentages of the judgment-standards by 0.1% for specially processed products
  3. Pile Resistance to Being Pulled Out Test : More than 500mN for handkerchiefs, gauge-on-the-back products, and towel scarves should be tested by JIS-L1075 Rule-B (Pile Preservation Test)
  4. Absorbency Test: In case of no subsidence, within 5 seconds after washing with a washing machine. The meaning of when no subsidence is limited that subsiding at 60 seconds from 5 seconds.
  5. The standard value is excluded for the resistance to friction concerning the towel textile with the gauze weaving and the elastic material (strong twine and spandex, etc.). However, apply the disadvantage label.

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