Abstract:
Reticular structure made of material comprising: a biodegradable polymeric composition in a percentage by weight greater than 90% with respect to the total weight of the material of the reticular structure and a stabilizing additive configured, in use, for reducing the degradation of the reticular structure. The present disclosure also relates to a process for making said reticular structure and to a use thereof.
Abstract:
La invención se refiere a una red (1) tejida o extrudida para la formación de bolsas (10), con hilos o cintas que mediante ligazón o unión firme entre sí conforman mallas (2, 3). Las mallas de la red no son homogéneas y la red comprende al menos una porción principal en la que los hilos o cintas están ligados o unidos formando una primera estructura (4) de malla, adecuada para que dicha red desempeñe su función; y al menos una porción menor en la que los hilos o cintas forman una segunda estructura (5) de malla, rompible más fácilmente que la primera estructura de malla, precisamente destinada a facilitar la apertura de la bolsa que será confeccionada con la red.
Abstract:
A method and apparatus for manufacturing a combined polymeric structure are disclosed. The apparatus includes an extruder body (110), a die (120) configured to receive flowing polymeric material from the extruder body (110) and a motion unit. The die includes a hollow inner die (122), a protecting sleeve (124) located within the inner die (122) and an outer die (125) located at an exit (128) end of the hollow inner die (122). The motion unit is configured to cause bidirectional translational motion of the hollow inner die (122) relative to the outer die (125).
Abstract:
Composite polymeric comprising, in order, first, second, and third polymeric layers. The first layer is compositionally different than the second layer. The third layer is compositionally different than the second layer. The second layer comprises an array of void spaces therein, but not through the first and second major surfaces. The void spaces each have a series of areas through the void spaces ranging from minimum to maximum areas. The minimum area is not adjacent to either the first or third layer. Methods for making the composite polymeric layers are also disclosed. Polymeric layers described herein are useful, for example, as components in personal care garments such as diapers and feminine hygiene products. They can also be useful for filtering (including liquid filtering) and acoustic applications.
Abstract:
A method of forming a fibre reinforced polymer structure, comprises the steps of:- providing a first bundle of fibres arranged in an array and having a first fibre volume fraction (FVF); forming a node region in the bundle wherein a transverse dimension of the first bundle is increased and a second perpendicular dimension of the bundle is decreased so that the first FVF is maintained at an approximately constant value; providing a second bundle of fibres extending in angular relation to the first bundle, arranged in an array and having a second FVF; forming a node region in the second bundle wherein a transverse dimension of the second bundle is increased and a perpendicular dimension of the second bundle is decreased so that the second FVF is maintained at an approximately constant value; wherein the node region of the second bundle overlies the node region of the first bundle to form an assembly; infusing the assembly with a polymer resin; and curing the resin to form the structure.
Abstract:
Method and extrusion die (1030) for produciing a three-dimensional polymeric strand netting, wherein a plurality of the polymeric strands (1070a, 1070b, 1070c) are periodically joined together in a regular pattern at bond regions throughout the array, wherein a majority of the polymeric strands (1070a, 1070b, 1070c) are periodically bonded to at least two (three, four, five, six, or more) adjacent polymeric strands, and wherein no polymeric strands are continuously bonded to a polymeric strand. Three-dimensional polymeric strand netting described herein have a variety of uses, including wound care, tapes, filtration, absorbent articles, pest control articles, geotextile applications, water/vapor management in clothing, reinforcement for nonwoven articles, self bulking articles, floor coverings, grip supports, athletic articles, and pattern coated adhesives.
Abstract:
A one-piece plastics material mesh structure (1), particularly a geogrid for use in geoengineering construction, is produced by stretching a plastics sheet starting material (20) formed with an array of holes (21). The mesh structure (1) comprises a plurality of generally parallel rib structures (2) extending longitudinally in a first direction parallel to the stretch direction (MD) and a plurality of generally parallel bar structures (3) extending in a second direction (TD) transverse to the rib structures (2). The rib structures (2) and said bar structures (3) are interconnected by junctions (5) at spaced locations along their respective lengths whereby the rib structures (2) are sub-divided along their length into alternating junctions (5) and rib segments (6) and the bar structures are sub-divided along their lengths by alternating bar segments (7) and junctions (5). In the mesh structure (1), (a) the rib structures (2) are such that the rib segments (6) are oriented in the first direction (MD) along their lengths and orientation in the first direction (MD) extends across the junctions (5) connecting two such oriented rib segments, and (b) the bar structures (3) are such that their overall stretch ratio in the second direction (TD) is a maximum of 1 and all locations along the length of the bar structures (3) have a maximum orientation of 1.5 in the second direction (TD).
Abstract:
본 발명은 세포 배양용 지지체 성형장치에 관한 것으로서, 수평부와 수직부로 구성된 장치 본체; 상기 장치 본체의 수평부에 부설되며, 세포 배양용 지지체가 성형되는 작업대; 상기 작업대의 상부에 배치되며, 상기 장치 본체의 수직부에 부설되며, 하나 이상의 디스펜서를 구비하는 디스펜서 기구; 및 상기 작업대를 디스펜서 기구에 대하여 혹은 상기 디스펜서 기구를 상기 작업대에 대하여 이동시키는 이송수단;을 포함하며, 상기 디스펜서는 상부로 고상 원료를 투입하는 실린지, 상기 실린지의 상부에 장착되며 중심에 공기공급제어관이 연결되는 실린지 뚜껑, 상기 실린지의 하부에 결합되는 노즐 및 상기 실린지가 끼워지며 실린지를 가열하여 실린지 내부에 있는 고상의 원료를 용융시키는 가열부를 포함하여 구성되어, 상기 디스펜서 기구 혹은 상기 작업대의 이동과 함께, 상기 디스펜서 기구로 투입된 원료를 용융 배출시켜 세포 배양용 지지체를 성형하는 것을 특징으로 한다.