Butt-Weld Thermal Splicer for Polyester Motion-Picture Films

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 80, No. 2, pp. 111–116
Abstract: The editing, assembly, and convenient use of motion-picture film requires that film splices be easily made, and be invisible in the projected image. In those applications when polyester film base is preferred for its balance of physical properties, splicing of such film base has not yet become convenient. Thermal weld splices can be produced on polyester, however, and the simplicity of one procedure has now been demonstrated with a prototype tabletop unit for the thermal butt-weld splicing of 35mm polyester motion-picture film. The welding process employs radiant heating to achieve fusion. The film is initially positioned and trimmed to lengths that provide about 0.035 in of additional length in the splice area, compressed into a butt-weld after two seconds of heating. The excess length is forced out of the film plane into a bead, which is then skived away. The necessary orientation and crystallinity of the polyester base are maintained over most of the splice area by controlled, rapid heating and cooling. A group of tests has been developed to evaluate both the weld and its adjacent areas, and has been correlated with practical use. Design data are presented.
Publication Date: 1971-02-01
DOI: 10.5594/J13530
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J13530
Author(s): C. O. StoutzManufacturing Experiments Div., Eastman Kodak Co., Bldg. 35, Kodak Park, Rochester, NY 14650
F. J. KolbManufacturing Experiments Div., Eastman Kodak Co., Bldg. 35, Kodak Park, Rochester, NY 14650
Copyright: © 1971 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

A Method Using Dielectric Heating for Splicing Motion-Picture Film [Active]
Liquid Cement for Splicing Cronar Polyester Cine Films [Active]
Ultrasonic Splicing of Polyethylene Terephthalate Films [Active]
A Method for Splicing Motion-Picture Film [Active]
2. ANSI PH22.178–1969, 35mm Motion-Picture Film Splices . EXTERNAL
4. Caskin N. H. , “Heat-scaling apparatus for joining thermoplastic members,” U.S. Patent 2,865,738, Jan. 12, 1954 . EXTERNAL
6. Gotham R. C. Schrader R. W. , “Quantitative splice testing — progress report,” Private Communication, Oct. 31, 1967 . EXTERNAL
7. Scarlett A. C. , “Stretching of polyethylene terephthalate film,” U.S. Patent 2,823,421, Feb. 18, 1958 . EXTERNAL

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C. O. Stoutz and F. J. Kolb; Butt-Weld Thermal Splicer for Polyester Motion-Picture Films, Journal of the SMPTE ( Volume: 80, Issue: 2, February 1971); SMPTE, 1971. Available at https://doi.org/10.5594/J13530

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C. O. Stoutz and F. J. Kolb; Butt-Weld Thermal Splicer for Polyester Motion-Picture Films, Journal of the SMPTE ( Volume: 80, Issue: 2, February 1971); SMPTE, 1971. Available at https://doi.org/10.5594/J13530

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<span class="citation">C. O. Stoutz and F. J. Kolb; <cite>Butt-Weld Thermal Splicer for Polyester Motion-Picture Films</cite>, Journal of the SMPTE ( Volume: 80, Issue: 2, February 1971); SMPTE, 1971. Available at <a href="https://doi.org/10.5594/J13530" target="_blank" rel="noopener">https://doi.org/10.5594/J13530</a></span>

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C. O. Stoutz and F. J. Kolb; Butt-Weld Thermal Splicer for Polyester Motion-Picture Films, Journal of the SMPTE ( Volume: 80, Issue: 2, February 1971); SMPTE, 1971
doi: 10.5594/J13530
url: https://doi.org/10.5594/J13530

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<li>
C. O. Stoutz and F. J. Kolb; <cite id="bib-10-5594-j13530">Butt-Weld Thermal Splicer for Polyester Motion-Picture Films</cite>, Journal of the SMPTE ( Volume: 80, Issue: 2, February 1971); SMPTE, 1971
<span class="doi">10.5594/J13530</span>
</li>

Referenced By

Progress Committee Report for 1971 [Active]