الثلاثاء , يوليو 7 2020
الرئيسية / أرشيف الوسم : and

أرشيف الوسم : and

NEW STRETCHER FRAME TO PREVENT THE LOOSENING OF OIL PAINTINGS AND AVOID THE DEFECTS OF TRADITIONAL STRETCHER FRAME

THE NEW STRETCHER FRAME FOR CANVAS OIL PAINTINGS IS MADE OF PLEXIGLASS, WHICH IS A TRANSPARENT MATERIAL. THIS FRAME CONSISTS OF FOUR SIDES WITH BEVELED INNER EDGES AND MITERED CORNERS WITH SLOT AND TENON JOINTS THAT CAN BE EXPANDED BY USING A CONTROL UNIT CONTAINING EIGHT COGWHEELS. THE SIDES CAN BE MOVED EASILY BY TURNING THE COGWHEELS, WHICH AIDS THE …

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PRODUCTION AND APPLICATION OF ENVIRONMENT-FRIENDLY BIOPOLYMERS FOR THE PROTECTION OF THE ENVIRONMENT FROM TOXIC FORMALDEHYDE OF WOOD-PRODUCT ADHESIVE

THE INVENTION PROVIDES A NEW ADHESIVE SYSTEM OF WOOD PRODUCTS MADE FROM INCORPORATING BIOPOLYMERS WITH AN AMINO RESIN (UREA FORMALDEHYDE). THE BIOPOLYMERS HAVE IMPROVED REDUCTION OF FREE FORMALDEHYDE OF ADHESIVE SYSTEM. THE ENVIRONMENTAL PERFORMANCE OF THE PREPARED LIGNOCELLULOSIC COMPOSITES WERE EVALUATED TOWARDS THE EFFECT OF INVESTIGATED BIOPOLYMERS ON THE PERCENTAGE OF FREE FORMALDEHYDE AND THE ADHESION PROPERTIES (MECHANICAL AND PHYSICAL …

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