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Henan Yeesain Health Technology Co., Ltd. is a professional manufacturer and excels in producing disposable hygiene products. It owns many brands such as “Deyo” “Yeesain”. Based on the long-term understanding of marketing requirements, we also sell on JD.com, Tmall, Taobao, PDD, Amazon, etc. 2018 Sales Amount of baby Wipes was 8.5 Million dollars on Alibaba Taobao platform, Sales Amount of Underpad 5.4 Million dollars. Total annual sales of more than 40 million dollars. we have 5 advanced hygiene care series production lines and a production capacity of more than 4 million pieces per day. It mainly produces baby care products, medical underpads series, an incontinence pad, maternity series. The company strictly implements the international quality standards, has obtained ISO9001 & CE certificates.

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TECHNICAL STANDARD 1. MEASURING AIR PERMEABILITY OF ...
TECHNICAL STANDARD 1. MEASURING AIR PERMEABILITY OF ...

Version 5 Page 4 of 34 16/01/06 building fabric as a whole. ,Air, leakage is quantified as ,Air Permeability,.This is the leakage of ,air, (m3/hour) in or out of the building, per square metre of building envelope at a reference pressure of 50 Pascals (m3/(h.m2)@50Pa) between the inside and outside of …

Air tightness testing and air permeability ratings for ...
Air tightness testing and air permeability ratings for ...

Air, Tightness ,Testing, (also known as ,air, leakage ,testing,) is designed to measure the ,air permeability, of a building. Excessive levels of ,air, leakage can cause heat loss, which in turn has an adverse effect on a building’s energy efficiency and thermal performance.

Air tightness testing and air permeability ratings for ...
Air tightness testing and air permeability ratings for ...

Air Tightness Testing, (also known as ,air, leakage ,testing,) is designed to measure the ,air permeability, of a building. Excessive levels of ,air, leakage can cause heat loss, which in turn has an adverse effect on a building’s energy efficiency and thermal performance.

TECHNICAL STANDARD 1. MEASURING AIR PERMEABILITY OF ...
TECHNICAL STANDARD 1. MEASURING AIR PERMEABILITY OF ...

Version 5 Page 4 of 34 16/01/06 building fabric as a whole. ,Air, leakage is quantified as ,Air Permeability,.This is the leakage of ,air, (m3/hour) in or out of the building, per square metre of building envelope at a reference pressure of 50 Pascals (m3/(h.m2)@50Pa) …

Air permeability testing - Designing Buildings Wiki
Air permeability testing - Designing Buildings Wiki

The ‘design ,air permeability,’ is the target value used to calculate the TER. The ‘assessed ,air permeability,’ is the measured value used to establish the BER (or DER). ,Testing, is required on all residential developments (this may be a sample of units) and non-dwellings. Buildings with a useful floor area less than 500m2 MAY be exempt.

SEFAR - Conversion factors air permeability diameter ...
SEFAR - Conversion factors air permeability diameter ...

Conversion factors, ,air permeability,, diameter count, physical units, mesh calculator, filter fabric, filter fabrics, filter media, filtration fabric, filtration ...

Building Material Moisture Permeability & perm ratings ...
Building Material Moisture Permeability & perm ratings ...

Notes to the table above: Find below the technical bulletins, papers, standards used as sources for these perm ratings. 1. Grade D building papers must have a 10-minute ,rating, under ASTM D779, commonly called the “boat ,test,,” in which a piece of building paper is folded in the shape of a boat and floated in a dish of water until it soaks through and wets a powder on top. Some Grade D pape

Airtightness | Performances | Heinen
Airtightness | Performances | Heinen

The ,permeability test, may seek to ensure that the building presents a good level of ,air tightness, in order to improve its energy performance (for instance, combined with thermal insulation). This performance feature can also prove useful in the nuclear or chemicals sector, etc. Certain zones have to be placed under excess pressure to prevent the transfer of dust or particles in neighbouring zones.

PERMEABILITY TESTING OF GEOTEXTILES
PERMEABILITY TESTING OF GEOTEXTILES

by ,testing, numbers of specimens. ,Air Permeability, geotextil&S stacks of in the different ,Air,-,permeability, tests were performed in accordance with ASTM 0737. All fabrics were tested by using a pressure difference equivalent to 1.27 cm (0.5 in) of water across the fabric. The tests were per­

Air Permeability Testing is a requirement under UK ...
Air Permeability Testing is a requirement under UK ...

Air Permeability Testing, – What you need to know As a general rule, current building regs require that new dwellings achieve an ,air, leakage of around 5m 3 /hm 2 or less. That is the ,air, leakage rate per hour, per square metre of envelope area.

PERFORMANCE TESTING AND CERTIFICATION
PERFORMANCE TESTING AND CERTIFICATION

Air permeability, (BS EN 12207:2000) This ,test, measures the volume of ,air, that would pass through a window or door at a certain pressure. Performance levels are grouped into four ‘classes’ where class 1 is the lowest level of performance and class 4 the best. Thermal insulation Thermal performance can be measured in a number of ways,

Permeability Rating - Why Important When Choosing ...
Permeability Rating - Why Important When Choosing ...

29/11/2016, · There are three rating classifications for permeability. - Class 1 – A wallcovering with a permeability rating under 0.1 – this indicates that water vapor will not be able to easily permeate the wallcovering, causing a high risk of mold and mildew issues. The wallcovering acts as a barrier, trapping the water behind it.

Air Permeability Tester | Air Permeability Test for Fabric ...
Air Permeability Tester | Air Permeability Test for Fabric ...

Air Permeability, Tester of textile fabrics complies with ASTM D737, ISO 9237/7231, BS 5636, etc. It is used to ,test, the resistance of the flow of ,air, through fabrics. When you do ,air permeability testing, for fabric, there is different ,air permeability test, method. ,Air Permeability, Tester price is competitive.

Air Permeability Tester | Air Permeability Test for Fabric ...
Air Permeability Tester | Air Permeability Test for Fabric ...

Air Permeability, Tester of textile fabrics complies with ASTM D737, ISO 9237/7231, BS 5636, etc. It is used to ,test, the resistance of the flow of ,air, through fabrics. When you do ,air permeability testing, for fabric, there is different ,air permeability test, method. ,Air Permeability, Tester price is competitive.

Comfort Perception of Breathable and Nonbreathable Diapers
Comfort Perception of Breathable and Nonbreathable Diapers

Vapor ,permeability, of the cover material was determined ... ,diapers, were about 750 cc/min. ,Nonbreathable diapers, had ,air, exchange values of about 50 cc/min, ... times during the ,test, using a ,rating, scale. Subjects wore one of the ,diapers, for the first session and the other in a second

Comfort Perception of Breathable and Nonbreathable Diapers
Comfort Perception of Breathable and Nonbreathable Diapers

Vapor ,permeability, of the cover material was determined ... ,diapers, were about 750 cc/min. Nonbreathable ,diapers, had ,air, exchange values of about 50 cc/min, ... times during the ,test, using a ,rating, scale. Subjects wore one of the ,diapers, for the first session and the other in a second

ASTM D737 - 18 Standard Test Method for Air Permeability ...
ASTM D737 - 18 Standard Test Method for Air Permeability ...

5.2 ,Air permeability, is an important factor in the performance of such textile materials as gas filters, fabrics for ,air, bags, clothing, mosquito netting, parachutes, sails, tentage, and vacuum cleaners. In filtration, for example, efficiency is directly related to ,air permeability,. ,Air permeability, also can be used to provide an indication of the breathability of weather-resistant and ...

Air tightness testing and air permeability ratings for ...
Air tightness testing and air permeability ratings for ...

Air Tightness Testing, (also known as ,air, leakage ,testing,) is designed to measure the ,air permeability, of a building. Excessive levels of ,air, leakage can cause heat loss, which in turn has an adverse effect on a building’s energy efficiency and thermal performance.

ASTM D737 - 18 Standard Test Method for Air Permeability ...
ASTM D737 - 18 Standard Test Method for Air Permeability ...

5.2 ,Air permeability, is an important factor in the performance of such textile materials as gas filters, fabrics for ,air, bags, clothing, mosquito netting, parachutes, sails, tentage, and vacuum cleaners. In filtration, for example, efficiency is directly related to ,air permeability,. ,Air permeability, also can be used to provide an indication of the breathability of weather-resistant and ...

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