Method of splicing webs

Details Method of splicing webs Method of splicing webs

1990-06-12

1991-10-15

Heinrich, Samuel M.

Metal fusion bonding

Process

With shaping

228189, 228 57, B23K 902, B23K 923

Patent

active

050567039

ABSTRACT:
A method of splicing together leading and following webs which are delivered successively. In the splicing method, when the leading and following webs are different in shape or material from each other, there is interposed between the leading and following webs a dummy web for increasing the strength of splicing of the webs. Also, when the leading and following webs are welded and spliced togethr, the two webs are in part lapped on each other and the lapped portions thereof are cut inclined with respect to the width direction of the webs. After waste materials produced from the cutting are removed, the ends of the webs are butted against each other or slightly lapped on each other and are then welded together. A welded and spliced portion, which includes a fusion portion and a recrystallized portion produced due to heat during welding, is formed such that a difference between the web thickness of the recrystallized portion and the thickness of the adjoining portions of the recrystallized portion is within .+-.30%.

REFERENCES:
patent: 3421676 (1969-01-01), Jenkins
patent: 3618844 (1971-11-01), Morley et al.
patent: 3654035 (1972-04-01), Takimoto
patent: 3670398 (1972-06-01), Minton
patent: 3736979 (1973-06-01), Rakich et al.
patent: 4286744 (1981-09-01), Gullotti et al.
patent: 4878986 (1989-11-01), Nishikawa

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