Patents Assigned to PRS Mediterranean Ltd.
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Patent number: 7674516Abstract: A multiphase polymeric material comprises a first rigid continuous phase and a second elastic phase dispersed in the first phase. The multiphase polymeric material may be formed into polymeric strips and used to make a cellular confinement system which is suitable for use in cold areas.Type: GrantFiled: September 4, 2008Date of Patent: March 9, 2010Assignee: PRS Mediterranean Ltd.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Publication number: 20100055443Abstract: A cellular confinement system is formed from an ultrasonic welding method which requires no external pressure during the welding step. A plurality of multi-layer strips can be welded such that the weld area is not thinner than the rest of the strip and has good UV protection. The method comprises: stacking a plurality of strips; providing external pressure; removing the external pressure, positioning the ultrasonic welding apparatus so that it places no external pressure on the stack; welding at least two strips; and removing the welding apparatus.Type: ApplicationFiled: September 4, 2008Publication date: March 4, 2010Applicant: PRS Mediterranean Ltd.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Patent number: 7648754Abstract: The present disclosure generally relates to a polymeric cellular confinement system which can be filled with soil, concrete, aggregate, earth materials, and the like. More specifically, the present disclosure concerns a cellular confinement system characterized by improved durability against damage generated by UV light, humidity, and aggressive soils, or combinations thereof.Type: GrantFiled: March 1, 2007Date of Patent: January 19, 2010Assignee: PRS Mediterranean Ltd.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Publication number: 20090169803Abstract: Geotechnical article, and process for making it, the article having coefficient of thermal expansion less than about 150 ppm/° C. at ambient; resistance to acidic media greater than polyamide 6 resin and/or resistance to basic media greater than PET resin; resistance to hydrocarbons greater than that of HDPE; creep modulus of at least 400 MPa at 25° C., at 20% of yield stress load for 60 minutes (ISO 899-1); and 1 percent secant flexural modulus at least 700 MPa at 25° C. (ASTM D790); the article including a composition including (a) from about 1 to about 95% by weight of the composition of at least one functional group containing polymer or oligomer; and (b) from about 5 to about 99% by weight of the composition of at least one engineering thermoplastic, and optionally containing a filler and optionally containing an unmodified polyolefin, ethylene copolymer or ethylene terpolymer.Type: ApplicationFiled: March 4, 2009Publication date: July 2, 2009Applicant: PRS MEDITERRANEAN LTD.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Publication number: 20090142144Abstract: A retaining wall comprises a plurality of layers made from geocells. The retaining wall has a capping layer at the top of the wall, wherein the ratio of the length of the capping layer to the height of the retaining wall is at least 0.8. The retaining wall also has at least one stacking layer and may further comprise a reinforcing layer made of geogrids or, preferably, geocells. The reinforcing geocells have a height that is less than the height of the capping layer geocell.Type: ApplicationFiled: September 26, 2008Publication date: June 4, 2009Applicant: PRS Mediterranean Ltd.Inventors: Oded Erez, Adi Erez
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Publication number: 20090142542Abstract: A composite system comprises a base layer, a capping layer, and at least one core geocell layer. The base layer and capping layer are stacked below and above the core geocell layer, which is infilled with a low quality material. In specific embodiments, the base layer and capping layer are each geocells infilled with a high quality material. This composite system meets engineering specifications economically.Type: ApplicationFiled: September 26, 2008Publication date: June 4, 2009Applicant: PRS MEDITERRANEAN LTD.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Patent number: 7541084Abstract: A multiphase polymeric material comprises a first rigid continuous phase and a second elastic phase dispersed in the first phase. The multiphase polymeric material may be formed into polymeric strips and used to make a cellular confinement system which is suitable for use in cold areas.Type: GrantFiled: March 1, 2007Date of Patent: June 2, 2009Assignee: PRS Mediterranean Ltd.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Patent number: 7501174Abstract: Geotechnical article, and process for making it, the article having coefficient of thermal expansion less than about 150 ppm/° C. at ambient; resistance to acidic media greater than polyamide 6 resin and/or resistance to basic media greater than PET resin; resistance to hydrocarbons greater than that of HDPE; creep modulus of at least 400 MPa at 25° C., at 20% of yield stress load for 60 minutes (ISO 899-1); and 1 percent secant flexural modulus at least 700 MPa at 25° C. (ASTM D790); the article including a composition including (a) from about 1 to about 95% by weight of the composition of at least one functional group containing polymer or oligomer; and (b) from about 5 to about 99% by weight of the composition of at least one engineering thermoplastic, and optionally containing a filler and optionally containing an unmodified polyolefin, ethylene copolymer or ethylene terpolymer.Type: GrantFiled: March 1, 2007Date of Patent: March 10, 2009Assignee: PRS Mediterranean Ltd.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Publication number: 20080319112Abstract: A multiphase polymeric material comprises a first rigid continuous phase and a second elastic phase dispersed in the first phase. The multiphase polymeric material may be formed into polymeric strips and used to make a cellular confinement system which is suitable for use in cold areas.Type: ApplicationFiled: September 4, 2008Publication date: December 25, 2008Applicant: PRS Mediterranean Ltd.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Patent number: 7462254Abstract: An ultrasonic welding method which requires no external pressure during the welding step is disclosed. A plurality of multi-layer strips can be welded such that the weld area is not thinner than the rest of the strip and has good UV protection. The method comprises: stacking a plurality of strips; providing external pressure; removing the external pressure, positioning the ultrasonic welding apparatus so that it places no external pressure on the stack; welding at least two strips; and removing the welding apparatus.Type: GrantFiled: March 1, 2007Date of Patent: December 9, 2008Assignee: PRS Mediterranean Ltd.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Publication number: 20080213572Abstract: Geotechnical article, and process for making it, the article having coefficient of thermal expansion less than about 150 ppm/° C. at ambient; resistance to acidic media greater than polyamide 6 resin and/or resistance to basic media greater than PET resin; resistance to hydrocarbons greater than that of HDPE; creep modulus of at least 400 MPa at 25° C., at 20% of yield stress load for 60 minutes (ISO 899-1); and 1 percent secant flexural modulus at least 700 MPa at 25° C. (ASTM D790); the article including a composition including (a) from about 1 to about 95% by weight of the composition of at least one functional group containing polymer or oligomer; and (b) from about 5 to about 99% by weight of the composition of at least one engineering thermoplastic, and optionally containing a filler and optionally containing an unmodified polyolefin, ethylene copolymer or ethylene terpolymer.Type: ApplicationFiled: March 1, 2007Publication date: September 4, 2008Applicant: PRS Mediterranean Ltd.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Publication number: 20080210359Abstract: An ultrasonic welding method which requires no external pressure during the welding step is disclosed. A plurality of multi-layer strips can be welded such that the weld area is not thinner than the rest of the strip and has good UV protection. The method comprises: stacking a plurality of strips; providing external pressure; removing the external pressure, positioning the ultrasonic welding apparatus so that it places no external pressure on the stack; welding at least two strips; and removing the welding apparatus.Type: ApplicationFiled: March 1, 2007Publication date: September 4, 2008Applicant: PRS Mediterranean Ltd.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Publication number: 20080210688Abstract: The present disclosure generally relates to a polymeric cellular confinement system which can be filled with soil, concrete, aggregate, earth materials, and the like. More specifically, the present disclosure concerns a cellular confinement system characterized by improved durability against damage generated by UV light, humidity, and aggressive soils, or combinations thereof.Type: ApplicationFiled: March 1, 2007Publication date: September 4, 2008Applicant: PRS Mediterranean Ltd.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Publication number: 20080214699Abstract: A process is provided for producing a compatibilized polymeric blend. A first thermoplastic polymer and a reactive moiety are provided to a progressive melt kneading apparatus. The reactive moiety comprises a first reactive group capable of reacting with the first thermoplastic polymer but not a second polymer and a second reactive group capable of reacting with the second polymer but not the first polymer. The first thermoplastic polymer and the reactive moiety are then melt kneaded so that the first reactive group reacts with the first thermoplastic polymer and the second reactive group is grafted to the first thermoplastic polymer, forming a molten self-compatibilizer. A molten second polymer is then provided. The molten self-compatibilizer is melt kneaded with the molten second polymer so that the second reactive group reacts with the second polymer to form a compatibilized polymeric blend. Also provided are articles formed from the compatibilized polymer blend.Type: ApplicationFiled: February 29, 2008Publication date: September 4, 2008Applicant: PRS Mediterranean Ltd.Inventors: Izhar Halahmi, Oded Erez, Adi Erez
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Publication number: 20080213521Abstract: A multiphase polymeric material comprises a first rigid continuous phase and a second elastic phase dispersed in the first phase. The multiphase polymeric material may be formed into polymeric strips and used to make a cellular confinement system which is suitable for use in cold areas.Type: ApplicationFiled: March 1, 2007Publication date: September 4, 2008Applicant: PRS Mediterranean Ltd.Inventors: Izhar Halahmi, Oded Erez, Adi Erez