摘要:
The invention is directed to monoaxially drawn polyolefin multilayer film, tape or yarn of the AB or ABA type, having a stretch ratio of more than 12, having an E-modulus of at least 10GPa, substantially consisting of a central layer (B) of a polyolefin selected from polyethylene and polypropylene, and one or two other layers (A) of a polyolefin from the same class as the material of the central layer B, the DSC melting point of the material of the said other layers (A) being lower than the DSC melting point of the material of the said central layer (B), wherein the central layer (B) is between 50 and 99 wt.% of the material and the other layers (A) between 1 and 50 wt.%. The present invention further relates to a method of manufacturing such a tape, film or yarn.
摘要:
For manufacturing tape or yarns, plastic polymer material is extruded into a film (20, 21) having a pattern of parallel, longitudinal, alternating ribs (31, 32) and deep, narrow grooves (33, 34) on each of its two opposite sides, at least a plurality of the grooves (33, 34) in one side each being located diametrically opposite one of the grooves (34, 33) in the other, opposite side. Yarns and tapes obtained in the form of or from such a film typically have a substantially improved tenacity and are more supple and smooth.
摘要:
The invention is directed to a co-extruded tape or yarn of the ABA-type, as well as to a process for producing such a tape, comprising a central layer and two top layers, the composition of the central layer (A) and the top layers (B) being different, wherein the central layer (B) is based on at least one propylene polymer, or on at least one ethylene polymer having a density of more than 935 kg/m 3 , and the top layers (A) are based on at least one ethylene copolymer with one or more C 3 -C 8 olefins, and the tape or yarn having a thickness of 50 to 150 µm and a stretch ratio between 6 and 10.
摘要翻译:本发明涉及一种ABA型的共挤压带或纱,以及一种制造这种带的方法,包括中心层和两个顶层,中心层(A)和 顶层(B)不同,其中中心层(B)基于至少一种丙烯聚合物,或至少一种密度大于935kg / m 3的乙烯聚合物,并且顶层( A)基于至少一种具有一种或多种C 3 -C 8烯烃的乙烯共聚物,并且所述带或纱线具有50至150μm的厚度和6至10的拉伸比。
摘要:
A yarn for strands of an artificial turf ground cover (2), including a tape filament (4) having a flat cross-section. One side of the tape filament (4; 54) has a colour and/or tint different from the color and/or tint of the other side. The a tape filament (4; 54) preferably has two layers or a core layer (8; 58) and two outer layers (9; 59) of a different material than the core layer (8; 58) and co-extruded with the core layer (8; 58), each on one of two opposite sides of the core layer (8; 58). An artificial turf ground cover including a substrate sheet and strands fastened to the substrate sheet and projecting upwardly from the substrate sheet, wherein the strands are formed of such a yarn is also described and its appearance makes it particularly suitable as a replacement of natural turf.
摘要:
A yarn for strands of an artificial turf ground cover, including a tape filament (4) having a core layer (8) and two outer layers (9) of a different material than the core layer (8), each on one of two opposite sides of the core layer. The core layer (8) contains at least polyester or polyolefin material, and the outer layers (9) contain high-density polyethylene. An artificial turf ground cover and a playing field including such a yarn and a method for producing such a yarn are also described. The high-density polyethylene has a relatively small coefficient of friction with the human skin and the yarn has a good shape recovery after deformation in spite of containing HDPE in outer layers.
摘要:
The invention is directed to a monoaxially drawn polyolefine multilayer tape or yarn of the AB or ABA type having a stretch ratio of more than 12, substantially consisting of a central layer (B) of a polyolefine selected from polyethylene and polypropylene, and one or two other layers (A) of a polyolefine from the same class as the material of the central layer B, the DSC melting point of the material of the said other layers (A) being lower than the DSC melting point of the material of the said central layer (B), wherein the central layer (B) is between 50 and 99 wt.% of the material and the other layers (A) between 1 and 50 wt.%.
摘要:
The present invention is directed to a method for forming a thermoplastic composite, wherein the thermoplastic composite comprises a matrix and a reinforcement, both issued of a semi-crystalline polymer of the same class. The invention provides in a method for isothermally forming a thermoplastic composite, which composite comprises a matrix and a reinforcement, both issued of a semi-crystalline polymer of the same class, comprising the steps of: i) placing a stack of said thermoplastic composite, having a temperature below the sealing or melting point of said matrix, in a mould, having a temperature between the sealing or melting point of said matrix and the melting point of said reinforcement; ii) closing said mould and applying; and iii) opening the mould after a dwell time.
摘要:
The present invention relates to a method for preparing a composite product, comprising bonding a polyolefinic article together with a woven or non-woven cloth, wherein at least the surface of the cloth that is bonded with the article is provided with a backing-layer comprising a polyolefin. The invention further relates to a composite product obtainable by a method according to the invention.
摘要:
A fence tape, rope or wire for transmitting an electric current to an animal that touches the fence tape, rope or wire, having a support structure and an electrically conductive conduction structure (3). The conduction structure (3) has different electrically conductive materials having mutually distinctive electrical and mechanical properties. One of the materials has a better electrical conductivity. The other material has a greater resistance to tensile and bending loads. The conduction structure (3) contains at least one composite filament having, viewed in cross section, a conduction zone (4) from the electrically better conducting material and a self-supporting support zone (5) from the better material as to tensile and bending loadability. Mechanical loading of the electrically better conductive material is limited and an electrically conductive bridge is even maintained if an interruption of the electrically better conductive material occurs. A filament (3) for use in the proposed tape, wire or rope is also described.