Abstract: The invention relates to an anti-spalling laminated safety glass comprising a relatively thick front lamina, a back glass lamina having a thickness of 0.3 to 1.8 mm, and an intermediate resinous bonding layer, and glazing units formed therewith.

Abstract: An ionomer resin, a film or sheet of the ionomer resin and laminated articles having a lamina of the ionomer resin film are provided. The ionomer resin consists of ionically crosslinked ethylene-methacrylic acid copolymer or ethylene-arcylic acid copolymer which is neutralized with a polyamine. The polyamine neutralized ionomer resin may be formed into a film or sheet which may be self-supporting or may be laminated to glass to form a safety glass.

Abstract: A laminated glazing unit having outer sheets of glass or plastic and at least one resinous interlayer bonding the outer layers together. The unit is provided with an attachment member embedded in the interlayer free from contact with the outer sheets for attachment to a support structure.

Abstract: Laminated articles, particularly safety glass, are disclosed which comprise a lamina of ionomer film laminated to a sheet of glass. The ionomer resin film is preferably an ionically cross-linked resin prepared from ethylene or an alpha-olefin and carboxylic acid monomers. In particular, ethylene and acrylic acid monomers are preferred but other monomers are also disclosed. The laminated articles may also comprise a sheet of polycarbonate laminated to the ionomer resin film opposite the glass. The laminated articles may further comprise an ionomer resin film sandwiched between two sheets of glass. The laminated articles may still further comprise a sheet of polycarbonate or other plastic material or metal sandwiched between sheets of ionomer resin film, which are in turn sandwiched between sheets of glass.

Abstract: Laminated articles, particularly safety glass, comprising a lamina of ionomer resin film laminated to a sheet of glass. The ionomer resin film is preferably an ionically crosslinked ethylene-methacrylic acid copolymer. The laminated articles may also comprise a sheet of polycarbonate laminated to the ionomer resin film opposite the glass. The laminated articles may further comprise an ionomer resin film sandwiched between two sheets of glass. The laminated articles may still further comprise a sheet of polycarbonate or other plastics sandwiched between sheets of ionomer resin film, which are in turn sandwiched between sheets of glass.

Abstract: A process is disclosed for producing multi-layer laminates of glass and plastic of the type subject to nonsymmetrical thermal shear stress, such as flat or curved glass-plastic laminates or curved glass-plastic-glass sandwiches. Use of difunctional silane-treated glass and an aliphatic polyether polyurethane interlayer allows curing at temperatures low enough to minimize shear stresses which tend to cause delamination or shattering of the thin layer of glass in the finished part. The interlayer of aliphatic polyether polyurethane can be replaced by cured-in-place polyurethane having a polyether backbone, allowing processing at even lower temperatures.

Abstract: A method of handling a glass part to be treated and shaped in a hot liquid bath of a composition having a melting point greater than ambient temperature comprises the steps of: placing at least one glass part on at least one flexible porous member suspended by its edges; immersing the glass part, flexible member and a form in the hot bath; drawing the immersed glass part against the form by pulling the edges of the flexible porous member over the form; removing the form, glass part and flexible member from the bath as a unit, whereupon the glass and a portion of the bath composition hardens, the bath composition clinging to the glass and porous member; removing the form from the glass; and, removing the flexible porous member, and essentially all of the bath composition clinging to the glass. Protection for the glass and further ease of handling are provided where a second flexible porous member is placed between the glass and the form.

Abstract: A method for bending glass sheets is provided wherein glass is heated just to the softening point in a molten salt bath, then mechanically forced around a cylindrical or conical form using a forming member which hinges to follow the glass sheet onto the form, thereby maintaining the optical characteristics of the glass sheet by avoiding exertion of force along the plane of the glass sheet.The apparatus for use with the invention comprises a forming member which maintains contact with the part being formed at the same spot throughout the forming operation, means for supporting the part, and means for actuation.