T/SZFA 2003.1-2019 Active Group standards

T/SZFA 2003.1-2019 Mattress ergonomics evaluation Part 1: Evaluation methods for mattress hardness grading and distribution testing

Publish Date: 2019-12-10 Implement Date: 2020-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/SZFA 2003.1-2019

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Ergonomics

ICS Name: Furniture

Publish Date: 2019-12-10

Implement Date: 2020-01-01

Scope

Scope: This standard specifies two methods for testing and evaluating mattress hardness and hysteresis loss rate. —— Method A: Mattress hardness rating, which provides the measurement and evaluation methods for the hardness rating and its distribution. —— Method B: Mattress layer hardness, which provides the measurement and evaluation methods for the hardness of the mattress surface layer, core layer, and base layer. This standard applies to the testing and evaluation of hardness and hysteresis loss rate of finished mattresses. Main technical content: Sleep is essential for human energy and physical recovery. As a platform for sleep, the physical characteristics of mattresses have a significant impact on sleep quality. Mattress hardness is an important aspect of characterizing the physical performance of mattresses, primarily because it not only affects the pressure relief between the human body and the mattress, but also influences spinal support. When the mattress is too hard, if the local pressure between the human body and the mattress exceeds 2 times the pressure of the human body's terminal arteries, i.e., 9.33 kPa (70 mmHg), and the pressure duration lasts 1–2 hours, it can block the perfusion of capillary blood to tissues, causing tissue hypoxia. Prolonged pressure lasting more than 2 hours can lead to irreversible damage to human muscle and soft tissue. For healthy individuals, moderate actions such as turning over can reduce the impact of local pressure on human muscle and soft tissue (under normal circumstances, people turn over about 20 times per night). However, excessive movements during sleep can disrupt sleep continuity, which is detrimental to improving sleep quality. For individuals with limited mobility or long-term bedridden patients, under the dual influence of load duration and intensity, pressure ulcers may form. When the mattress is too soft, the human body sinks deeply into the mattress. Turning over or adjusting posture requires sig