Silk quilt inspection and testing methods and purchasing tips Inspection and factory inspection services

Today, with the increasingly fast pace of life and professionals working from home early and returning late, efficient time management has become crucial. Good sleep is the most important way to relieve stress, but many white-collar workers often toss and turn due to high work pressure and irregular work schedules, which in turn affects their productivity the next day. The comfort of bedding largely determines sleep quality, and silk quilts are highly sought after for their softness, breathability, and skin-friendly comfort. This article will systematically explain silk quilt inspection methods, quality standards, and purchasing tips to help you choose a silk quilt with greater professionalism and confidence.

1. Silk quilt inspection method

Method 1: Combustion test method - Verification of silk purity Test purpose: To identify whether the filling is pure silk.
Inspection process: Remove a small amount of filling from the quilt and ignite it over the flame of an alcohol burner. Pure silk will burn with a small flame and a smell similar to burning hair, which will extinguish itself after being removed from the flame. Filling containing polyester will emit black smoke and a sweet odor, and will continue to burn even after being removed from the flame.
Inspection suggestions: This method is simple and effective. It is recommended to be used during on-site factory inspections or purchase sampling, and can be used as a basis for preliminary authenticity determination.

Method 2: Chemical dissolution test - identification of fiber components. Purpose of the test: To verify the silk composition through reagents.
Inspection process: Place approximately 1 gram of filler in a 1 mol/L alkaline sodium hypochlorite solution and stir for about one minute. Pure silk will dissolve completely, and the solution will become cloudy; synthetic fibers will remain largely unchanged.
Interpretation: Silk is an animal protein fiber that can be dissolved in alkaline solutions. Consumers can also use household 84 disinfectant for simple testing, but caution is advised.

Method 3: Microstructure test method - observing fiber morphology. Purpose: To identify the morphological differences between silk and chemical fibers under a microscope.
Inspection process: After sampling and processing, the samples are placed under a microscope. Real silk fibers are uneven in thickness and have a natural luster on the surface; while polyester fibers are usually uniform in thickness and have holes or spots on the surface.
Application Note: This test method is mostly used in professional inspection and quality testing laboratories and can accurately determine whether a product is adulterated.

Method 4: Quality deviation rate inspection - verification of filling weight compliance inspection purpose: to detect whether the actual filling weight of the silk quilt is consistent with the nominal weight.
Inspection process: Remove the filling completely, weigh it, and dry it to constant weight. Calculate the quality deviation under the specified moisture regain.
Standard Reference: According to the national standard GB/T 24252-2009, "Silk Quilts," the deviation rate between superior and first-class products should be between -2.0% and +10.0%, while that for qualified products should be between -2.5% and +10.0%. In this experiment, 11 products failed to meet this standard, indicating the need for strict verification of this indicator during actual inspections.

2. Silk Quilt Purchasing Tips and Factory Inspection Suggestions

1. Ingredient labeling check:
   According to national standards, a silk quilt can only be called one with a silk content of 50% or more. Quilts made with 100% silk can be labeled "pure silk quilt." When purchasing, carefully check the label to clearly distinguish between mulberry silk and tussah silk. Mulberry silk is whiter, softer, and more comfortable; tussah silk is yellowish and has a relatively hard feel.

2. Key points for physical inspection:
   Consumers or inspectors are advised to open the duvet core and inspect the filling deep inside to check for uniform color, presence of lumps or streaks, and presence of stains or odors. Long-filament or medium-long-filament cotton is preferred, as these products generally last longer and provide greater comfort.

3. Factory and system inspection recommendations:
   For corporate procurement or large-volume purchases, we recommend conducting on-site factory inspections to examine the production environment, raw material sources, quality management systems, and inspection procedures. This can be done based on AQL sampling standards, combining various methods such as the aforementioned combustion and dissolution methods to implement systematic inspections.

4. Note the length of the silk floss:
   The length of silk floss affects the fluffiness and durability of a quilt. Long-filament floss is drawn from whole cocoons, while short-filament floss is often sourced from inferior cocoons or waste silk. During inspection, a pull test can be performed on a sample to determine if the fibers are easily broken and whether there is any short-filament adulteration.

In summary, the authenticity and quality of silk quilts require comprehensive testing. From simple self-tests by consumers to factory inspections and professional testing, a systematic inspection process effectively ensures product quality and helps everyone choose a truly comfortable and healthy silk quilt.