Polymer composite formed article, printed wiring board using the formed article and method for producing them

• Main Author: TOBITA MASAYUKI,KIMURA TORU,AOKI HISASHI,SHIMOYAMA NAOYUKI,ISHIGAKI TSUKASA,OCHI MITSUKAZU,HARADA MIYUKI
• Format: Patent
• Language: English
• Published: 31.01.2007
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PRINTED CIRCUITS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

A thermoplastic polymer composite formed article or a thermoplastic polymer composite formed article formed from a thermoplastic polymer or a thermoplastic polymer and a fiber, wherein the fiber is arranged along a first plane and the molecular chains of the thermoplastic polymer or thermoplastic polymer is oriented in the direction intersecting with the first plane, and the molecular chains of the thermoplastic polymer or thermoplastic polymer has a degree (±) of orientation in a range of 0. 5 or more and less than 1.0, and wherein the thermal expansion coefficients of said formed article in the direction along the first plane and in the direction intersecting with the first plane are both 5 × 10 -6 to 50 × 10 -6 (/K), and the difference between the thermal expansion coefficient in the direction along the first plane and the thermal expansion coefficient in the direction intersecting with the first plane is 30 × 10 -6 (/K) or less.