Apparatus for producing composite corrugating media for the manufacture of corrugated fiberboard and method of making same
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United States of America Patent
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Oct 1, 1985
Issued Date -
N/A
app pub date -
Oct 9, 1984
filing date -
Jun 8, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a method and apparatus for laminating two webs of corrugating medium to produce a composite corrugating medium for the manufacture of corrugated fiberboard. The method essentially consists of the steps of (a) applying a coat of a water-soluble adhesive onto one side of at least one web of a first and second corrugating medium; (b) conveying the first and second corrugating medium over the surface of a first heating cylinder such that the water-soluble adhesive is between the first and second corrugating medium to join them together into a loosely bound composite corrugating medium, wherein heat is applied to one surface of said composite corrugating medium through the first heating cylinder; and (c) passing the opposite surface of the composite corrugating medium to a second heating cylinder to subject the composite to a second heating step. The present invention contemplates an apparatus for carrying out this invention.
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