摘要:
Le procédé de mise en forme d'une feuille de verre d'épaisseur Ev comporte : une étape (310) d'application et d'adhérence sur une première face de la feuille de verre d'une couche d'un premier matériau apte à être sollicité en traction, ladite couche ayant une épaisseur E1 de telle sorte que : - soit la fibre neutre du complexe est déportée dans la couche de ce premier matériau, le verre étant alors totalement sollicité en compression, - soit la fibre neutre est déportée vers ce premier matériau tout en restant dans la feuille de verre, la surface du verre étant alors sollicitée à un niveau de traction inférieur à la valeur à rupture; une étape (320) de déformation du complexe comprenant la feuille de verre revêtue de la première couche de matériau, proche de la forme finale, de telle sorte que le verre soit principalement en compression; une étape (330) d'application d'un élément de stabilisation B et une étape (340) d'adhérence ou de fixation de l'élément de stabilisation B le complexe A et de stabilisation dimensionnelle de la forme finale.
摘要:
A method of laminating and forming a non-planar composite part from a pair of metal skins having an intervening paper layer in a single operation maintains a uniform pressure between die faces. The paper layer may be degassed prior to the lamination/forming process.
摘要:
This invention relates to a method of producing a printed can by drawing or drawing and redrawing a metallic blank or laminate that is printed in advance. The preparation of an original plate for printing is conducted by computer image processing to reproduce faithfully the printed image on the sidewall of the can. The occurrence of undesired striped patterns can be prevented, and a printed image having high linearity can be displayed on the drawn can without error because anisotropy resulting from plastic flow of the can blank has been corrected.
摘要:
A repulpable and recyclable case ready food tray is disclosed for carrying various food items, such as meat, poultry and produce that is typically used for retail display. The food tray is formed from paperboard made from natural wood fiber that is coated to provide a waterproof food cavity for preventing leakage of liquid from the food item and a moisture proof exterior support surface which allows excess liquid to be released from the food tray during the manufacturing process while providing a moisture proof surface to prevent wicking of liquid into the food tray if the tray is placed on a wet surface.
摘要:
The invention relates to a wipe comprising a generally flat piece of material (10) made of paper, cloth or the like, which is formed into a non-planar form having a three-dimensional shape, for example conical, for storage and dispensing.
摘要:
A method of making a helmet comprises the steps of cutting a plurality of substantially rectangular, preferably square, blanks from a sheet of resin-impregnated fabric, making curved cuts (1) in each blank to form a crown portion (5) and lobe portions (3) therefrom, arranging a stack of said sheets into a helmet preform such that the lobe portions of any blank partially overlap adjacent lobe portions of the same blank, and molding the helmet from the preform.
摘要:
The method includes the stages of gluing of a plurality of layers of sheet material (2, 3, 4); and stamping of all the layers (2, 3, 4) together; with sticking together of the previously glued zones being carried out at the same time as the stamping of all the layers (2, 3, 4). The machine includes gluing stations (12); and a stamping station (13) which includes a pair of pressing elements, which stamp and stick together said previously glued layers. The laminar element is formed from a plurality of layers of sheet material (2, 3, 4) and can include one or several cavities (5) of polygonal profile, or else said layers are of sinusoidal profile. A higher manufacturing output of the laminar layer is achieved and it permits the forming of a laminar element with cavities or undulations of any desired shape, without limitation on the thickness of the layers.