Surfaces of substrates which are difficult to bond strongly, e.g. polyethylene, are subjected to ultraviolet radiation in the presence of a photosensitizer and bonded with an adhesive comprising an elastomer and a reactive aldehyde resin to form a structurally strong joint.
A multi-layer laminate web for furniture formed of a polyolefin web containing a mixture or blend of specific proportions by weight of a propylene homopolymer or copolymer and specific proportions by weight of a low pressure polyethylene, polyvinylalcohol, ethylene-vinylalcohol copolymer, ethylene-acrylic acid copolymer, ethylene-acrylate ester-acrylic acid copolymer or -terpolymer and/or polycaprolactone or a mixture of blend of low pressure polyethylene with one or more of the foregoing polymers, copolymers or terpolymers and specific proportions by weight of a finely divided mineral filler or mineral filler mixture having on the surface thereof a substance having polar and non-polar groups, and a surface layer having an average thickness from 3 to 30 microns applied over the polyolefin web. A method for producing a furniture laminate is also disclosed.
A method of manufacturing an optically readable information disc in which a disc-shaped substrate of a synthetic resin which comprises an optically readable structure on at least one side is treated with an oxidizing gas of reactive, electrically neutral particles and is then provided on the side of the structure with a non-electrolytic deposited reflection layer.
A three-dimensional complex preform is made formed of various types of reinforcement fiberglass fibers with a binder at the interstices which rigidize the preform to the shape and form approximating the molded article, which can be handled and stored until a final mold is made filling the interstices with plastic and curing the plastic. Complex preforms require either specific reinforcements in the form of increased sections, specific reinforcement, or require modification or enlargement in size or increase in complexity by the attachment of one or more additional preforms. To modify an existing preform and obtain a desired shape and form, reinforcement members or additional preforms are attached by energetic stitching. Energetic stitching includes the application of an electromagnetic energy curable binder and the application of electromagnetic radiation to cure the binder. The stitching normally occurs over a restricted area defined by the contact surfaces to join two or more members and the restricted area is obtained in various forms such as by applying binders in preselect areas, or by applying the curing radiation in preselect areas or by masking the application of the binder or masking the application of the energy by controlling of the location and/or areas where the stitching is applied. Substantial modifications and flexibility in the type of resultant preform can be attained whether the preform has an add on reinforcement member or is formed by the attachment of one or more additional preforms to it to obtain a complex resultant preform.