格外用心的首选供应商

Eastman承担的责任远远超出了首选供应商应承担的一般职责。不同于很多竞争对手,Eastman免费为您提供监管和技术服务,帮助您顺利完成生产过程。您可借助本指南以及我们的优质创新材料提升品牌形象,并确保根据您的设备对我们的聚合物进行优化。
 
我们的监管服务团队密切关注全球监管动态,并向市场及时提供相关信息。我们为您提供安全使用我们的聚合物所需的监管信息,包括遵守食品和药品管理局相关标准、化学和机械性能等方面的详细信息。
 
我们还针对从概念到将您的产品推向市场的成型工艺所涉及的各个方面,提供优质的技术服务。Eastman设计服务能力包括:
 

感谢您咨询

我们经常收到有关使用Eastman医用级聚合物进行模塑成型的问题,并始终乐于答疑解惑并提供更多信息。以下是对我们最近收到的一个咨询请求的回复:
 
“EastmanMXF221共聚聚酯的环保性如何?”

Eastman致力于打造可带来更大价值、同时减少环境影响的解决方案。
MXF221共聚聚酯是我们众多符合安全与可持续性行业标准的
环保型产品之一。其部分创新特性包括:
  • 不含双酚A、卤素或邻苯二甲酸酯型增塑剂。
  • 其韧性和耐用性有助于延长产品寿命并减少浪费。
  • 所使用的阻燃添加剂不含锑、溴或氯。
  • 适用于需要接触皮肤的换能器外壳应用。
详细了解Tritan如何改善设备和诊断的可持续性与设计。

EastmanMXF221共聚聚酯带来多种色彩匹配可能性

EastmanMXF221共聚聚酯可按照透明天然色或不透明彩色聚合物的形式提供,具有出色的耐化学品性和耐用性,特别适用于电子医疗器械外壳。该产品不仅极其坚韧,能承受医院环境中的日常压力,而且有助于塑造品牌。
 
使用不透明聚合物的品牌通常需要精确的颜色匹配以及出众的美观性来维护其品牌形象。EastmanMXF221共聚聚酯提供丰富的颜色选择,能够完美契合任何品牌标准。
 

Thank You for Asking.

我们经常收到有关使用Eastman医用级聚合物进行模塑成型的问题,并始终乐于答疑解惑并提供更多信息。以下是对我们最近收到的一个咨询请求的回复:
 
“What is the heat deflection temperature for Eastman MXF221 copolyester?”
 
Heat deflection temperature (HDT) is the temperature at which a polymer or plastic deforms under a specified load. The HDT of our latest offering, Eastman MXF221 copolyester, is outlined here.
 
Thermal properties
Deflection temperature  
  在0.455 MPa(66 psi)的压力条件下 ASTM
D 648 
94°C (201°F)
  在1.82 MPa(264 psi)的压力条件下

Eastman Tritan™ copolyester: Innovative properties for medical devices

Eastman Tritan copolyester offers a unique blend of processing and performance properties, including clarity, toughness, and heat and chemical resistance. It can also often be substituted into existing molds with minimal adjustments to processing parameters. This total balance of performance and processing gives Tritan advantages and design flexibility over many other commonly used polymers. Some qualities that make Tritan an excellent choice when it comes to molding parts for the medical market include:
 
  • Toughness: Exceptional toughness and durability. Medical device housings made with Tritan are impact- and shatter-resistant and have the ability to withstand extreme conditions.
  • Clarity: Outstanding clarity and color retention before and after gamma and e-beam sterilization.

Reducing stress in the assembly process

Parts made from Eastman Tritan copolyester can be assembled using a variety of joining techniques, including chemical, mechanical, or thermal methods. The choice of assembly method will depend on the end-user requirements of your application. With whatever method you choose, however, the assembly process can cause stress in devices.
 
The good news is that Tritan is an inherently tough material and can stand up to these stresses. Consider mechanical joining methods. In this technique, molded-in bosses are commonly used to accept screws or threaded inserts, while molded-in or postmold inserts are commonly used where a plastic cover or part must be removed repeatedly.
 

Liquid silicone rubber technology enhances Eastman Tritan™ copolyesters.

There’s a growing demand in today’s medical market for innovative medical devices and housings that provide a superior combination of chemical resistance and impact strength. Thanks to advancements in liquid silicone rubber (LSR) technology, manufacturers are now able to meet this demand using medical grades of Eastman Tritancopolyester. 
 
Momentive's Silopren LSR 47×9 series provides strong in-mold adhesion with Tritan™ without the need for primers. This combination is ideal for applications that require properties like handling comfort, waterproofing, durability, and aging stability, including:
  • Respiratory devices
  • Sealing elements
  • Gaskets for joints in housings and hardware
  • Buttons and switches on electronic housings and hardware
  • Vibration reduction
  • Membranes and lenses for electronic device housings
 

This Old Mold 3 - Hot runner systems

Tips for optimizing existing molds to run Eastman Tritan copolyester
 
Selecting the best hot runner system for your needs can vary greatly depending on the size of the part, polyester formulation, and part design. That’s why it’s critical that runner design and selection be discussed together. When using Eastman Tritan copolyester in an existing mold, consider the following factors when designing and processing hot runner systems.
 
设计指南
When properly designed, hot runner systems can eliminate sprue and runner regrind, mold with lower pressures, reduce cycle times, and improve processing windows. Good hot runner systems should:
 

Improving Medical Devices with Eastman MXF221 Copolyester

Eastman’s polymers are the key components used in many medical devices, and we’re constantly innovating our materials to help equipment achieve optimum performance and withstand the ever-changing demands of the health care industry.
 
Our latest offering, Eastman MXF221 copolyester, is a biocompatible, fully compounded medical grade polymer that is uniquely suited for medical devices and electronic device housings. Developed from Eastman Tritan copolyester, Eastman MXF221 copolyester offers superior chemical resistance to stringent disinfectants and drugs, improved durability, and greater longevity.
 
Eastman MXF221 copolyester provides many advantages for devices and brands, including:
 
  • Unsurpassed chemical resistance—Unlike polycarbonate or other polymers that lose their impact strength after contact with harsh disinfectants and chemicals, Eastman MXF221 copolyester can withstand many aggressive disinfectants without cracking, crazing, or hazing.
     

This Old Mold 3 - Shrinkage

Tips for optimizing existing molds to run Eastman Tritan copolyester
 
When using a mold designed for other plastics to run Eastman Tritan™ copolyester, good cooling is absolutely critical. Proper cooling helps you obtain lower cycle times and high-quality parts while reducing cost. Poor cooling, however, can lead undesirable effects, including mold shrinkage and warpage.
 
To minimize shrinkage, remember these key factors:
 
Uniform wall thickness
A uniform wall promotes even flow, minimizes shear heating, reduces molded-in stress, and tends to minimize warpage.
 
Consistent mold temperatures

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