was released on December 9, 2020 and was officially implemented on April 1, 2021.
On Dec 9th, 2020 China Ministry of Industry and Information Technology issued a product standard for Slippers QB/T 4552-2020 which became effective April 1, 2021. QB/T 4552-2020 replaced its previous edition QB/T 4552-2013.
The new version is applicable to slippers for daily use, excluding disposable slippers.
Main Technical Changes
The main differences between QB/T 4552-2020 and QB/T 4552-2013:
- The requirements for appearance quality were revised
- The requirements and test methods for the pull-out force of the upper band are modified
- The requirements and test methods for abrasion resistance of outsoles are modified
- The requirements and test methods for anti-slip performance of outsoles are added
- The requirements and test methods of colour fastness to rubbing of lining and insock are added
- The requirement and test method of free or partially hydrolytic formaldehyde content were modified
- The test method of peel strength of upper and sole is modified
- The test method of odour was modified
- The test method for the content of decomposable harmful aromatic amine dyes was modified
- The inspection items and qualification judgment were modified
- Added informative appendix "list of harmful aromatic amine dyes"
Main Technical Requirements of QB / T 4552-2020 Slippers
No | Item | Requirement |
|---|---|---|
1 | Appearance quality | Comply with GB / T 36975-2018, 5.2 |
2 | Bonding durability of upper-sole | ≥25 N/cm |
3 | Pull-out force of the upper band | The pull-out force of slipper strap in cold gluing, sewing and gluing process shall not be less than 80N; the pull-out force of slipper strap in rivet assembly process shall not be less than 50N. If the material is torn and the band is not pulled out at the bonding part of the upper and bottom, the pull-out strength of the band shall not be less than 30n / cm. |
4 | Abrasion resistance of outsole | Length of abrasion ≤15.0mm, and the phenomenon of wearing through of the outsole shall not appear. |
5 | Slip resistance | Bathroom slippers and slippers with slip resistance function, the wet dynamic friction coefficient should not be less than 0.4. |
6 | Color fastness to rubbing of lining and insock | Suede leather: wet≥ Grade 2 |
7 | Odour | ≤ Grade 3 |
8 | Decomposable carcinogenic arylamines dyes | Textile ≤ 20 mg/kg |
9 | Formaldehyde content | With direct contact to skin ≤ 75 mg/kg |
Details of the Technical Content
For more information, please refer to the standard QB/T 4552-2020 <slippers> or contact SGS directly.
SGS Global Softlines has an extensive network of over 40 laboratories worldwide, with a strong team of committed professionals from multi-disciplinary backgrounds. Our internationally accredited state-of-the-art testing laboratories offer a comprehensive range of physical, chemical and functional testing services for components, materials and finished products. We help your company ensure quality, performance and compliance with international, industrial and regulatory standards worldwide. Discover more at www.sgs.com/softlines.
For enquiries, please contact:
Louann Spirito
Consumer and Retail — Softlines
US & Canada Softlines Business Head
t: +1 973 461 7919
© SGS Group Management SA - 2021 - All rights reserved - SGS is a registered trademark of SGS Group Management SA. This is a publication of SGS, except for 3rd parties’ contents submitted or licensed for use by SGS. SGS neither endorses nor disapproves said 3rd parties contents. This publication is intended to provide technical information and shall not be considered an exhaustive treatment of any subject treated. It is strictly educational and does not replace any legal requirements or applicable regulations. It is not intended to constitute consulting or professional advice. The information contained herein is provided “as is” and SGS does not warrant that it will be error-free or will meet any particular criteria of performance or quality. Do not quote or refer any information herein without SGS’s prior written consent.
The newly renovated, sustainability-focused laboratory provides critical food testing services with a turnaround time that is 50-70% quicker than that of its predecessor.
The Callao City laboratory’s Testing Capabilities
Our 100m2 food testing laboratory in Callao City, Peru, conducts microbiological, chemical and sensory testing on a wide variety of food products:
- Fishmeal
- Oily fish and fish oils
- Dairy products
- Meats
- Processed food products
- Vegetables (fresh, dehydrated and frozen)
Thanks to its recent renovations, our laboratory in Callao City boasts increased testing capabilities and faster turnaround times, while significantly reducing its environmental impact.
“At SGS Peru, we are committed to improving our services, performing more precise analyses and achieving shorter response times. But the most important thing is that we achieve these objectives through sustainable management, aimed at reducing our carbon footprint,” explains Lorenzo De Santis, Health & Nutrition Manager.
We have introduced new automated equipment for testing proteins, moisture and fats. The laboratory can also now conduct FFA-TVBN (free fatty acids and basic volatile nitrogen) and color tests. These acquisitions allow for more precise analyses, and reduce delivery times by 50-70%.
The renovated laboratory is also far more sustainable than its predecessor. Its new equipment reduces the use of reagents and glass materials by 50% and decreases energy consumption by 75%. The laboratory also possesses a new automated control system that measures energy consumption and the carbon footprint in real time – providing key insights to help the laboratory reduce carbon emissions on an ongoing basis.
“SGS is a leader in laboratory analysis for food, fishmeal and fish oil, with a presence in over 140 countries. The Callao City laboratory benefits greatly from this global network. Our experienced staff is always up to date with the industry’s latest best practices and adopts a global lens throughout its work. This allows us to deliver the best possible service to our clients, backed up by our first-class facilities and robust technical support capabilities,” states De Santis.
To find out more about our revamped Callao City laboratory’s capabilities, please get in touch:
Jennifer Buckley
Senior Global Marketing Manager - Crop Science and Food
t: +1 973 461 1498
About SGS
We are SGS – the world’s leading testing, inspection and certification company. We are recognized as the global benchmark for quality and integrity. Our 96,000 employees operate a network of 2,600 offices and laboratories, working together to enable a better, safer and more interconnected world.
