摘要:
An article, such a bag, pouch, casing, or sheet formed from joined film pieces, comprises a non-crosslaminated film. The article has a parallel plate burst strength of at least 190 inches of water, with the film having a thickness of from 1 to 2.9 mils. The film comprises one or more of a wide variety of polymers, with linear low density polyethylene being a preferred polymer. The film is heat sealed to itself or another film (preferably a similar or identical film). The burst strength is surprising in view of the thin gauge of the film, and the fact that the film is not cross-laminated.
摘要:
A processing technique and a composition which allow compositions of PBT polymers or copolymers to be formed into blow molded articles, especially medical balloons such as dilatation or stent placement balloons, from extruded tubular parisons. The process includes a longitudinal stretch step run at a temperature below the Tg of the polymeric material and a radial expansion step run at a temperature above the Tg of the polymeric material. During the longitudinal stretch step, the tubing is subjected to high internal pressure. In the composition a small amount of boric acid is added to the polybutylene terephthalate in a melt blend to give a formulation which has reduced crystallinity after extrusion and which can more readily fashioned into high strength blow molded articles than PBT by itself. Articles, which may be formed using the invention include medical device balloon articles in which the polymer consists essentially of PBT optionally blended with boric acid.
摘要:
A cushioning device that imparts both stability and cushioning to the midsole of an athletic shoe. The cushioning device includes a bladder that has a plurality of separate fluid chambers positioned around a perimeter. The chambers define an open central portion of the bladder arrangement. Each of the chambers has an inner side, an outer side and a height that increases from a minimum adjacent the inner side to a maximum toward the outer side thereof.
摘要:
An airbag having at least two composite layers of fabric R.F. welded around the periphery thereof to form the bag and, which, when R.F. welded has excellent seam strength and a specific inflation strength less than 1.2.
摘要:
A medical device, at least a portion of which is composed of a polymeric material in which the polymeric material is a melt blend product of at least two different thermoplastic polymers, one of the thermoplastic polymers being a thermoplastic liquid crystal polymer (LCP) having a melting point of less than 250° C. The portion of the device made from the melt blend may be a catheter body segment or a balloon for a catheter. The LCP blends suitably also include a non-LCP base polymer having a melting point in the range of about 140° C. to about 265° C.