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US 5,707,328 AGranted
Method and apparatus for manufacturing paper tube
AssigneeFuji Photo Film Co., Ltd.
InventorsHiroki Sato, Shigehisa Shimizu
Life of this patent
Estimating the term…
Abstract
The moisture content of a base paper for manufacturing a paper tube is controlled to a predetermined value. Water-soluble adhesive is applied to a side of the base paper in such a small amount as to cause the adhesive to ridge on the side of the base paper, and the ridging adhesive is uniformly smoothed over the side of the base paper. The base paper is wound into a tube.
Claims19
A method of manufacturing a paper tube comprising the steps of
- controlling the moisture content of base paper to a predetermined value,
- applying water-soluble adhesive to a side of the base paper in such a small amount as to cause the adhesive to ridge on the side of the base paper,
- uniformly smoothing the ridging adhesive over the side of the base paper and
- winding the base paper into a tube.
1 more element
An apparatus for manufacturing a paper tube comprising
- a moisture content controlling means which controls the moisture content of base paper to a predetermined value,
- a coating means which applies water-soluble adhesive to a side of the base paper in such a small amount as to cause the adhesive to ridge on the side of the base paper,
- a smoothing means which uniformly smoothes the ridging adhesive over the side of the base paper and
- a winding means which winds the base paper into a tube.
1 more element
Dependencies are inferred from the claim text.