Abstract:
The invention relates to a method for treating an elongated object using a plasma process. The method comprises the steps of providing an elongated object in a planar electrode structure, and applying potential differences between electrodes of an electrode structure to generate the plasma process. Further, the method comprises at least partially surrounding the elongated object by a unitary section of the guiding structure, the electrode structure being associated with the unitary section.
Abstract:
A method for protecting an item from weight gain due to uptake of liquid comprising the step of exposing the item to plasma in a gaseous state for a sufficient period of time to allow a protective layer, particularly a polymeric layer, to be created on the surface of the item. Also encompassed is an item of footwear treated by the method.
Abstract:
Methods of manufacturing a nonwoven web having alcohol repellency properties are provided. A plurality of perfluoroalkyl(alkyl)(meth)acrylic monomers can first be deposited on a surface of the nonwoven web, and subsequently exposed to a RF plasma to polymerize the monomers on the surface of the nonwoven web to form a fluorinated polymeric coating. The perfluoroalkyl(alkyl)(meth)acrylic monomers include perfluoroalkyl(alkyl)(meth)acrylate esters having a perfluorinated carbon end group of 1 to 6 carbon atomsNonwoven webs are also generally provided that have an alcohol repellency of greater than 80%.
Abstract:
This invention relates to functional nonwoven filter media provided by radiation-induced graft copolymerization and its production method. Meltblown type of nonwoven (Meltblown) comprised of fine fibers, less than 8 micron in diameter, of polyolefin or polyamide is chosen as the suitable grafting trunk polymer. The production methods are composed of following steps, 1) irradiation less than 30 kGy dose to the Meltblown with electron beam or gamma ray; 2) graft copolymerization of emulsified vinyl monomer onto the Meltblown; and 3) chemical conversion of ion exchange group onto the grafted vinyl monomer. These steps are independently conducted in their suitable operation conditions.
Abstract:
A process for the preparation of water repellent acrylic fiber materials which includes (a) a first step in which the material is subjected to plasma treatment in the presence of a reactive gas or a mixture thereof with a noble gas; and (b) a second step in which the material obtained in step (a) is subjected to waterproofing by means of (i) traditional resin finish or (ii) with plasma generated in the presence of fluorinated compounds. The materials made of acrylic fiber obtained by the process have a waterproofing degree higher than 25 cm of water column and have a rigid appearance or good draping and softness depending on whether they have been water-proofed with treatment (i) or (ii). These materials may used in the preparation of covers or sun shields.
Abstract:
A process is disclosed in which low energy electrons are used chemically to graft phosphorous or halogen-rich double bonded molecules and the like into natural and synthetic materials to render the same flame retarding.
Abstract:
Fabrication of ballistic resistant fibrous composites having improved ballistic resistance properties. More particularly, ballistic resistant fibrous composites having enhanced a dynamic storage modulus, which correlates to low composite backface signature.