GB/T 12705.2-2024 Textiles - Methods of testing the down-proof property -
Part 2: Tumble test
1 Scope
This document describes the method for determining the down-proof property of fabrics and textiles by the tumble test.
This document is applicable to the textiles filled with down and feathers and the fabrics for making such products.
This document is not applicable to the products filled with down and feathers and other fillers.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 6529 Textiles - Standard atmospheres for conditioning and testing
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 8629-2017 Textiles - Domestic washing and drying procedures for textile testing
GB/T 17685-2016 Down and feather
GB/T 31907 Method of garment measurement
QB/T 1514-2011 Needles for household sewing machines
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
down-proof property
property of a fabric to prevent feathers, down, down fiber and feather fabric from coming out of its surface
Note: It is generally expressed by the number of pieces of down coming out under specified conditions.
4 Principle
The fabric sample is made into a specimen bag in a certain size, filled with a certain mass of down/feather, or the down/feather products are directly used as specimens. The specimen bag or specimen is put into the rotary box of the testing machine for down-proof property equipped with rubber ball. The rubber ball is brought to a certain height by the rotary box through the constant-speed rotation, to impact the specimen in the box to simulate the various extrusions, kneading and collision effects of down/feather products in use. The down-proof property of fabrics or down/feather products is evaluated by counting the number of pieces of feathers, down, down fiber and feather fabric coming out of the specimen bag or specimen.
