Classifications

• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K3/00—Apparatus or processes for manufacturing printed circuits
  • H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
  • H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
  • H05K3/1283—After-treatment of the printed patterns, e.g. sintering or curing methods
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K1/00—Printed circuits
  • H05K1/02—Details
  • H05K1/03—Use of materials for the substrate
  • H05K1/0393—Flexible materials
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
  • H05K2201/06—Thermal details
  • H05K2201/062—Means for thermal insulation, e.g. for protection of parts
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
  • H05K2203/01—Tools for processing; Objects used during processing
  • H05K2203/0104—Tools for processing; Objects used during processing for patterning or coating
  • H05K2203/0143—Using a roller; Specific shape thereof; Providing locally adhesive portions thereon
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
  • H05K2203/11—Treatments characterised by their effect, e.g. heating, cooling, roughening
  • H05K2203/1131—Sintering, i.e. fusing of metal particles to achieve or improve electrical conductivity
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
  • H05K2203/15—Position of the PCB during processing
  • H05K2203/1545—Continuous processing, i.e. involving rolls moving a band-like or solid carrier along a continuous production path
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49002—Electrical device making
  • Y10T29/49117—Conductor or circuit manufacturing
  • Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
  • Y10T29/49128—Assembling formed circuit to base
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49002—Electrical device making
  • Y10T29/49117—Conductor or circuit manufacturing
  • Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
  • Y10T29/49155—Manufacturing circuit on or in base
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49002—Electrical device making
  • Y10T29/49117—Conductor or circuit manufacturing
  • Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
  • Y10T29/49155—Manufacturing circuit on or in base
  • Y10T29/49163—Manufacturing circuit on or in base with sintering of base

Definitions

• the present invention is related to a method of applying a conductive pattern onto a web of indefinite length material.
• a roll with "very low thermal mass,” is defined as a roll that requires no more than about 1 joule of energy to change 1 cm 2 of the roll's surface by I 0 K.
• Figure Ia is a schematic view of an alternate embodiment of the apparatus of Figure 1;
• the roll 30 is constructed to require less than 1.0 joule of energy to change 1 cm 2 of the surface of the roll by I 0 K. In some embodiments, the roll 30 requires less than 0.5 joule of energy to change 1 cm 2 of the roll's surface by I 0 K. In some embodiments, the roll 30 requires less than 0.2 joule of energy to change 1 cm 2 of the roll's surface by I 0 K.
• heater 34 may be capable of providing heat energy at a rate sufficient to buckle thin metal shell 30 due to localized thermal expansion.
• embodiments of the invention are equipped to pre-heat thin metal shell 31 to an elevated temperature so that the additional heat provided to the surface of the metal shell 31 by heater 34 will not induce local expansion forces that exceed the thin shell's buckling force threshold.
• a baseline heating device is provided for warming thin metal shell 31 to a predetermined baseline temperature or to a temperature within a predetermined range of temperatures.
• baseline heating device is provided in the form shown in Figure 1, i.e. as a plurality of resistance heaters 40 mounted inside the air bearing 32. Other configurations for a baseline heating device are also contemplated and will be appreciated by those skilled in the art.
• tapered shoulder 133 prevents thin metal shell 131 from laterally wandering between the edges of air bearing 132 and serves to balance forces exerted by lateral airflow A' emerging from the edges of the thin shell 131, thus keeping the thin shell centered on the air bearing.
• FIG 2b a sectional view of another embodiment of a roll 230 useful in the present invention is shown and will now be described.
• Thin metal shell 231 is mounted on air bearing 232. Airflow from the air bearing 232 emerges from underneath the metal shell 231 along the lateral edge 231a of the shell as indicated by arrows "A"."
• the width of the thin shell 231 is such that it the shell fits within the lateral edges of air bearing 232.
• the shoulder structures depicted as tapered shoulder 133 ( Figure 2a) and stepped shoulder 233 ( Figure 2b) are exemplary of structures useful in the present invention to prevent excessive lateral movement of the thin metal shell within the confines of the air bearing.
• Other structures are contemplated within the scope of the invention to perform the same function and achieve the same result as the shoulders 133 and 233, and the invention is not to be construed as limited in any respect to the depicted shoulder structures.
• IR heaters Power to the IR heaters was controlled with a power controller cabinet (model 910-A-240- 40-00, Research Inc.).
• the infrared wavelength of this apparatus was primarily between 1 and 2 microns, which equates to a bulb "temperature" of about 1000 to 2000 0 C.
• Exposure of the ink composition to the radiation caused the silver nanoparticles to sinter into a conductive layer of silver which was cooled with a quenching system provided in the form of an air knife positioned downstream from the IR heaters, essentially as shown in Figure 1 and described elsewhere herein.
• the PET web was not thermally distorted and the nickel shell did not buckle.
• Example 2 An experimental set-up was prepared similar to that of Example 1 , except as follows.
• the 1600 watt IR heaters and their focusing and controlling hardware were replaced by a 1500 watt, 25-50 kHz induction heater.
• This induction heater coil having a 1 inch (2.54 cm) diameter was positioned a distance of 2 mm from the thin shell, and the film was advanced at a speed of 2 feet/min (0.61 m/min).
• Exposure of the ink composition to the heat generated by the induction heater caused the silver nanoparticles to sinter into a conductive layer of silver which was cooled with a quenching system provided in the form of an air knife positioned downstream from the induction heating coil as described elsewhere herein.
• the PET web was not thermally distorted and the nickel shell did not buckle.

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Rolls And Other Rotary Bodies (AREA)
• Manufacturing Of Printed Wiring (AREA)
• Laminated Bodies (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40873419

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (6)

Citations (2)

Family Cites Families (24)

• 2009
  • 2009-05-20 KR KR1020107028184A patent/KR101545372B1/ko not_active Expired - Fee Related
  • 2009-05-20 EP EP09751434.3A patent/EP2298047B1/en active Active
  • 2009-05-20 WO PCT/US2009/044603 patent/WO2009143206A1/en not_active Ceased
  • 2009-05-20 JP JP2011510668A patent/JP2011521476A/ja active Pending
  • 2009-05-20 CN CN2009801186522A patent/CN102037794B/zh not_active Expired - Fee Related
  • 2009-05-20 US US12/993,138 patent/US8720052B2/en active Active

Patent Citations (2)

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