Crack Resistant Plastic Enclosure Structures

Electronic device housing structures and other structures may be formed from molded plastic. Plastic structures such as injection molding housing structures and other structures may be provided with openings. An opening may have sidewall surfaces. Machining operations and other techniques may be use...

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Bibliographische Detailangaben
Hauptverfasser:	DINH RICHARD H, JARVIS DANIEL W
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPARATUS THEREFOR CHEMISTRY COMBINED OPERATIONS CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HANDLING THIN OR FILAMENTARY MATERIAL INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY OTHER WORKING OF METAL PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING UNIVERSAL MACHINE TOOLS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Electronic device housing structures and other structures may be formed from molded plastic. Plastic structures such as injection molding housing structures and other structures may be provided with openings. An opening may have sidewall surfaces. Machining operations and other techniques may be used in forming the openings. Openings may be processed to enhance resistance to stress-induced cracking of the plastic structures along the sidewall surfaces. Cracking resistance may be obtained by activating the surface using heat or laser treatment and by electroplating the activated surface to form a metal liner structure. Surface treatments using applied liquid chemicals or heat may form a treated layer on the surface of an opening with enhanced cracking resistance. A plastic sleeve or other insert may form a liner structure in an opening that resists cracking. Liner structures may also be formed by applying heat or light to a coating in an opening.