Tyvek-paper

Tyrrano TySAR Tysme Tyuyamumte [12196-95-1] Tyvek-Mylar Tyvek-paper... 

Paper. For many years, paper was the only choice for package types until the introduction of Tyvek as a medical packaging material. However, paper still plays a significant role in the medical device industry. Over the years before the introduction of Tyvek, paper materials compiled a significant performance record of product protection and patient safety. Although Tyvek has taken a majority share of the medical device package market, the industry is finding ways to utilize paper in combination with plastics and foils to provide the needed performance characteristics with favorable economics. 

Union Carbide Corp produced the first of the synthetic papers in the late 1960s. Since that time other examples of synthetic papers include DuPont s Tyvek nonwoven paper and Van Leer s Valeron cross-laminated film. This market is now dominated by a few large, worldwide ventures with proprietary processing techniques that extend the use of single and multilayer extruded blown film or cast film. 

Recycle. A large number of manufacturing facilities, especially chemical plants, have internal recycle streams that are considered part of the process. In this case, recycle refers to the external recycle of materials, such as polyester film and bottles, Tyvek envelopes, paper, and spent solvents. 

Spun-bonded polyethylene (e.g., Tyvek) is used in strong mailing envelopes. How should these be marked so that they would not end up in the recycling of paper, where they cause complications ... 

Although various gases can be employed, e.g. formaldehyde, ethylene oxide, most pharmaceutical processes relate to the latter. Since ethylene oxide (and its residues) are toxic and it forms explosive mixtures with air/oxygen, special precautions are essential to safe handling. Ethylene oxide is therefore mixed with an inert gas (usually C02) and needs a certain temperature (usually 55°C) and the presence of moisture to be effective, together with materials which are either porous (paper, Tyvek, board) or permeable to the gas (PVC, PS, PE, etc.). This means that there is a solubility or retention factor related to their use and a period must be allowed to reduce residues (by degassing). 

Another type of peelable pouch is known as the header bag. This package is essentially a two-web pouch in which a portion of one web is a peelable Tyvek or paper vent. The header bag provides high permeability, ease of opening, and convenient product dispensing. An advantage of this package type is that a basic flexible bag can contain a high-profile device. 

This is a classic nonwoven packaging application. The formula is exciting a traditional industry finds a nonwoven, which creates a completely new application sector. In this case, DuPont Nonwovens, Wilmington, DE, United States, has led the field, establishing Tyvek as an early leader in the field. DuPont Tyvek offered a unique material that could replace paper or plastic films and offer a compelling combination of... 

In Europe, Bong (based in Stockholm, Sweden), a major player in paper envelopes, entered into an exclusive agreement with DuPont in 2010. This covered the manufacturing, marketing and sales of Tyvek branded envelopes and related products in Western Europe. 

Tyvek, a polyolefin fibrous sheet material, is made from very fine, high density Polyethylene fibers. It offers a unique combination of the characteristics of paper, film and fabrics which makes it strong, tear and puncture resistant and yet light weight... 

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