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128results about How to "Less raw material" patented technology

Extruded polypropylene sheets containing beta spherulites

An improved extruded polypropylene sheet that contains a high level of beta crystallinity and a process for making such sheets are disclosed herein. The polypropylene sheet contains at least one layer of a resinous polymer of propylene and an effective amount of beta spherulites. The beta spherulites in the sheet are produced by the incorporation of a beta nucleating agent in the polymer. The presence of the beta spherulites in the sheet facilitates the process of post-stretching the perforated sheet to produce a uniaxially or biaxially oriented mesh structure, and also broadens the temperature range over which this stretching can be performed. The final mesh has a lower density than a polypropylene mesh without beta spherulites. The perforated beta nucleated sheet also exhibits different stretching characteristics during the orientation steps such that more resinous polymer is drawn out of the node junction region between the machine direction and transverse direction oriented strands and a greater percentage of the web area has a solid polymer structure. This altered stretching behavior results in an oriented web that has higher strength and torsional rigidity characteristics. Thus lighter weight mesh structures which meet all of the physical property requirements for end-use applications, such as reinforcing grids to stabilize concrete and soil in civil engineering and landfill applications, are produced. The lighter weight extruded beta nucleated sheet can also be stretched at higher line speeds, thereby reducing the manufacturing costs.
Owner:MAYZO

Self collapsable blow moulded plastic thin-walled containers, their manufacturing process and their applications in water dispensing units

The invention pertains to self collapsable blow moulded plastic thin-walled PET bottle (1) manufactured by Injection moulding of a preform (100), as well as Stretching, Blowing and Moulding (ISBM) of said preform (100).Said container (1) having:a top part (2,3,4,5);a tubular body portion (6);and a bottom structure (7) opposite to the top part (2,3,4,5); preferably a bottle (1), notably for beverages, is characterized:a) in that it is self-collapsable during its emptying;b) in that it comprises at least two transversal grooves and / or ribs (6.1), preferably located in the tubular body portion (6), optionally with at least some of them being each equipped with at least 2, preferably at least 4, and more preferably between 4 and 8 collapse starters (6.2);c) in that the mean wall thickness (Tmean) of the tubular body portion (6) is—in an increasing order of preference—less than or equal to 200; 180; 160; 150 μM; preferably comprised between 65 and 150; and more preferably comprised between 90 and 130 μm.The invention also concerns a method, a preform (100) and a mold for the manufacture of said aforementioned container by blow moulding.The invention also concerns a method for bottling liquid into said bottles (1), a method for dispensing said liquid, a dispenser for implementing said method and a method for packing the thin-walled bottles, in view of storage and transportation.
Owner:DES EAUX MINERALES DEVIAN S A E M E
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