全天候抗菌，有效抵抗金黄色葡萄球菌、大肠杆菌、绿脓杆菌和沙门氏菌...

卫生是当今社会日益关注的问题。用户越来越重视在医院、公共场所或家中防止有害细菌的蔓延和日常用品的安全保护。
Dryflex抗菌TPE直击微生物的来源，有助于防止问题发生。当使用认可的ISO 22196方法进行测试时，样品经过独立测试，证明可以杀死99.9 ％以上的革兰氏阳性及阴性菌。该材料可以有效抵抗金黄色葡萄球菌、大肠杆菌、绿脓杆菌、沙门氏菌和其他许多有害细菌。
一些细菌也可能对日常用品产生不利的影响，引起污渍、脆化、气味和产品变质。 Dryflex抗菌TPE有助于防止这些问题的发生，并延长产品的使用寿命。
抗菌成分在生产复合物时便加入配方中，因此抗菌活性存在于整个TPE，而不是仅仅在表面上。性能不会受到外部应力、划痕和磨损影响。
活性成分符合欧洲食品安全局指引，被美国食品药物管理局批准为适合食品接触，在美国环保署登记，并符合欧洲杀菌剂产品指令（ BPD） 。

Dryflex抗菌热塑弹性体的优点
增值，产品差异化
有效抵抗金黄色葡萄球菌、大肠杆菌，绿脓杆菌和链球菌
'内置'的连续保护 - 性能不会受到磨损、压力或化学清洁剂的影响
适用于透明制品，并具有高度的热稳定性
无毒，对人类安全
抑制细菌的生长，延长产品寿命
样品测试符合ISO 22196:2007
我们将提交客户用Dryflex的制成品进行免费外部微生物检测并对研究结果进行报告。样本是根据国际认可的JIS Z 2801和ISO 22196:2007测试协议进行检测的。

应用
消费品
学校、商场和体育场馆区等人流量大的区域
体育器材
医疗保健和临床环境
公共交通
包装

INTRODUCTION

Hygiene is a growing concern in today´s society. Preventing the spread of harmful bacteria and the safe protection of everyday products, in hospitals, public places or at home is highly valued by customers.

Dryflex antimicrobial TPEs attack micro-organisms at source, helping prevent problems before they occur. Samples made from Dryflex antimicrobial TPEs have been independently tested and proven to kill >99.9% of gram positive and negative bacteria when tested by the recognised ISO 22196 test method. Dryflex antimicrobial TPEs are effective against MRSA, E-Coli, Pseudomonas Aeroginosa and Salmonella and many other harmful bacteria.

Some bacteria can also adversely affect everyday products causing stains, embrittlement, odours and product deterioration. Using Dryflex Antimicrobial TPE can help to prevent these issues and extend the service life of the finished product. They can add value to your product by addressing the health image desired by end-users.

HOW DOES IT WORK?

Atmospheric moisture triggers the gradual release of silver ions in the compound. These ions interact with the micro-organisms to prevent a wide spectrum of bacteria from reproducing. Silver does not deteriorate and this controlled release of silver ions lasts for the lifetime of the product. Silver is non toxic and safe for humans.

As the antimicrobial treatment is formulated into the compound at the time of manufacture; the antimicrobial activity is consistent throughout the TPE and not solely on the surface. Performance is not affected by external stresses, scratches, and wear and tear. The additive system is suitable for transparent articles and has a high degree of thermal stability to withstand industrial processing.

PERFORMANCE

Articles manufactured using Dryflex Antimicrobial TPEs have been independently tested and proven to exhibit reductions in bacterial viable counts by more than 99.9%.

We will submit customer finished articles made from Dryflex for free external micro-biological testing and report on the findings. Samples are tested according to international recognised test protocols such as JIS Z 2801 and ISO 22196:2007, a quantitative antibacterial test, and other variants applicable to the end use requirement.

The active ingredient is included in the EFSA guidelines and FDA approved as suitable for food contact, it is EPA registered and complies with the European Biocidal Products Directive (BPD).

TYPICAL APPLICATIONS

Cross-contamination is of concern for multi-use articles, and especially those frequently used by different people. Dryflex Antimicrobial TPEs can add value to applications found in public and domestic environments, including:

•        Consumer goods

•        Sports equipment

•        Furniture trimming, flooring and wall protection

•        Hand held devices

•        Healthcare and clinical environments

•        Areas with a heavy footfall such as schools, shopping centres and gyms

•        Packaging

•        Public transport

COMPOUND OR MASTERBATCH?

There are many benefits to using a compound over a masterbatch in antimicrobial applications. The accuracy of the dosing equipment is vital to the performance of the material. Addition rates are typically in the 1  to  2%  range and the antimicrobial active ingredient must be dispersed perfectly to ensure the properties are not compromised and the efficacy of each part.

If your product requires third party certifications, such as UL listing, then the addition of a masterbatch can make the material certifications invalid. If you need to add more than one masterbatch to include other properties such as colour or UV, the costs can quickly rise. A fully compounded Dryflex TPE gives a perfectly dispersed, consistent antimicrobial activity with a correct and reproducable addition level. Dryflex Antimicrobial TPEs are custom formulated for your application, they are ready for use, with no additional steps.

ANTIMICROBIAL TESTING

Five Dryflex samples, three of which had been compounded with antimicrobial additive, were independantly tested. The samples were leached and tested for activity using a quantitative test method.

PROCEDURE - QUANTITATIVE ANTIBACTERIAL ASSESSMENT:

ISO 22196:2007 was used to quantitatively test the specimen for antibacterial activity. In brief:

1.   1、 The sample was placed into a container with a lid.

2、 A 0.1mL inoculum of Escherichia coli (ATCC #8739) or Methicillin resistant Staphylococcus aureus (ATCC #33591) was placed, in microdroplets, on the surface of the samples. Sterile films were placed over the inoculum to encourage good contact.

3.   3、 The specimen was incubated 24 hours at 37°C.

4.   4、 20mL of Letheen broth was added to the container and shook. The liquid was plated using dilution techniques.

5.   5、 The “Value of Antimicrobial Activity” was carried out using the formula

R  =  [log (B/C)] (where R: value of antimicrobial activity)

B  =  Average of the number of viable cells of bacteria on the untreated test piece / inoculum control after 24 hours

C  =  Average of the number of viable cells of bacteria on the antimicrobial piece after 24 hours.

RESULTS

E.coli after 1hr leach

Concentration of starting inoculum 3.88 x105 CFU/mL

MRSA after 1hr leach

Concentration of starting inoculum 1.67 x 105 CFU/mL

The level of treatment stated in the results tables indicate theoretical levels only. For further information please contact us.