Methods for making repulpable paper strings and straps through pultrusion process and related devices for the same
AssigneeEnterprises International, Inc.
InventorsHalim Chtourou, Michelle Agnes Ricard, Natalie Pagé, Guy Njamen Tchapda, Michael Lee Reynolds, Lyman Arthur Biggar
Life of this patent
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Abstract
A method for forming paper straps is provided. The method may include providing a paper strip from a base sheet and directing the paper strip through a first die to form an intermediate string. The method may further include directing the intermediate string from the first die through a second die, the intermediate string exiting the second die in a substantially non-twisted state. Related apparatuses and devices to form paper straps are also provided.
Claims37
A method for forming a paper strap, the method comprising:
- providing a plurality of paper strips;
- directing each of the plurality of paper strips through a respective funneling die to form intermediate strings;
- directing each of the intermediate strings from the respective funneling die through a first pultrusion string die, the intermediate strings exiting the first pultrusion string die in a substantially non-twisted state to form non-twisted strings;
- impregnating the non-twisted strings with a water-soluble PVOH adhesive;
- and
- directing the non-twisted strings through a pultrusion strap die, the non-twisted strings forming the paper strap.
A method, comprising:
- providing a paper strip from a base sheet;
- directing the paper strip through a funneling die to form an intermediate string;
- and
- directing the intermediate string from the funneling die through a first pultrusion string die, the intermediate string exiting the first pultrusion string die in a substantially non-twisted state to form a non-twisted string, the non-twisted string having a substantially solid cylindrical cross-sectional shape.
A method, comprising:
- providing a paper strip from a base sheet;
- forming slits in the paper strip, the slits increasing a strength capability of a non-twisted string;
- directing the paper strip through a first pultrusion string die to form an intermediate string;
- and
- directing the intermediate string from the first pultrusion string die through a second pultrusion string die, the intermediate string exiting the second pultrusion string die in a substantially non-twisted state to form the non-twisted string.
Dependencies are inferred from the claim text.