摘要:
The invention relates to a fibrous tape comprising fused polymeric fibers, said fibrous tape having a tape thickness and a tape width and being characterized by a coefficient of variation (CV) of the tape thickness across the tape width of at most 6%.
摘要:
The invention relates to a fibrous tape comprising fused polymeric fibers, said fibrous tape having a tape thickness and a tape width and being characterized by a coefficient of variation (CV) of the tape thickness across the tape width of at most 6%.
摘要:
The invention relates to a process for the manufacture of a multilayer material sheet comprising unidirectional high performance fibers, the process comprising the steps of positioning the fibers in a parallel fashion, consolidation of the fibers to obtain a monolayer, stacking at least two monolayers such that the fiber direction in one monolayer is at an angle α to the direction of the fibers in an adjacent monolayer and fixation whereby the stack of at least two monolayers is subjected to a pressure and temperature treatment for a duration of a least 2 seconds, followed by cooling the stack under pressure to a temperature of 120° C. or lower. The invention furthermore relates to the multilayer material sheet obtainable with the process according to the invention. This multilayer material sheet has a reduced uptake of liquids.
摘要:
Process for producing a three-dimensionally shaped article, comprising the steps a) providing a structure containing a plurality of consolidated films or tapes of uni-directionally oriented polymer, b) forming the structure into a three-dimensionally shaped article by applying a force at a temperature below the melting point of the oriented polymer.
摘要:
The invention relates to a process for the manufacture of a multilayer material sheet comprising unidirectional high performance fibers, the process comprising the steps of positioning the fibers in a parallel fashion, consolidation of the fibers to obtain a monolayer, stacking at least two monolayers such that the fiber direction in one monolayer is at an angle a to the direction of the fibers in an adjacent monolayer and fixation whereby the stack of at least two monolayers is subjected to a pressure and temperature treatment for a duration of a least 2 seconds, followed by cooling the stack under pressure to a temperature of 120° C. or lower. The invention furthermore relates to the multilayer material sheet obtainable with the process according to the invention. This multilayer material sheet has a reduced uptake of liquids.
摘要:
Process for producing a three-dimensionally shaped article, comprising the steps a) providing a structure containing a plurality of consolidated films or tapes of uni-directionally oriented polymer, b) forming the structure into a three-dimensionally shaped article by applying a force at a temperature below the melting point of the oriented polymer.
摘要:
The invention relates to an implantable valve prosthesis, optionally comprising a support structure and at least one valve leaflet. The valve prosthesis comprises a material structure of unidirectional reinforcing elements of drawn ultra high molecular weight polyolefin, extending in at least two directions, wherein the modulus of elasticity of the polyolefin reinforcing elements is at least 60 GPa. The invention furthermore relates to a method for manufacturing such an implantable valve. The valve is easily manufactured and has an improved durability.
摘要:
The invention relates to a flexible sheet comprising (i) a woven fabric comprising yarns containing polyethylene fibers; and (ii) a plastomer layer adhered to at least one surface of said woven fabric wherein said plastomer is a semi-crystalline copolymer of ethylene or propylene and one or more C2 to C12 α-olefin co-monomers and wherein said plastomer having a density as measured according to ISO1183 of between 870 and 930 kg/m3, wherein the flexible sheet has a shrinkage of at most 1.9%.
摘要翻译:本发明涉及一种柔性片材,其包括(i)包含含有聚乙烯纤维的纱线的机织织物; 和(ii)粘附到所述织物的至少一个表面的塑性体层,其中所述塑性体是乙烯或丙烯与一种或多种C 2 -C 12α-烯烃共聚单体的半结晶共聚物,并且其中所述塑性体具有密度 根据ISO1183测量的在870和930kg / m 3之间,其中柔性片材具有至多1.9%的收缩率。
摘要:
The invention relates to a process for making high-performance polyethylene multi-filament yarn comprising the steps of making a solution of ultra-high molar mass polyethylene in a solvent; spinning of the solution through a spinplate containing a plurality of spinholes into an air-gap to form fluid filaments, while applying a draw ratio DRfluid; cooling the fluid filaments to form solvent-containing gel filaments; removing at least partly the solvent from the filaments; and drawing the filaments in at least one step before, during and/or after said solvent removing, while applying a draw ratio DRsolid, wherein in a draw ratio DRfluid=DRsp×DRag of at least 50 is applied, wherein DRsp is the draw ratio in the spinholes and DRag is the draw ratio in the air-gap, with DRsp greater than 1 and DRag at least 1. The invention further relates to a spinplate having spinholes of specific geometry.
摘要:
Bone fixing device comprising (I) a surgical cable having a first and a second end and (II) at least a first and a second fixing plate having a first resp. second central hole and a first resp. second ring surrounding said first resp. second hole, the circumference of each fixing plate forming an outer edge of its ring and an inner edge of its ring being adjacent to the hole it surrounds, the first fixing plate being in a stacked position on top of the second plate leaving a gap between the plates and the holes at least partly overlapping each other, wherein the cable ends follow a continuous trajectory running around and between the plates and through the holes in such way that by drawing the cable ends the cable is tensioned around the bone parts and fixate these.