초록 ▼

A cushioning dunnage producing mechanism and method wherein the mechanism utilizes one or more webs of sheet-like stock material, with the stock material being adapted to be disposed by the mechanism in generally superimposed relation and then fed into a crumpler section of tubular-like construction

A cushioning dunnage producing mechanism and method wherein the mechanism utilizes one or more webs of sheet-like stock material, with the stock material being adapted to be disposed by the mechanism in generally superimposed relation and then fed into a crumpler section of tubular-like construction, to radially compress the sheet-like material into a pad-like dunnage product. The lateral edges of the stock material are caused to be rolled inwardly into generally spiral-like form, prior to passage of the stock material into the crumpler section, by a forming frame of generally triangular-like shape both in plan and in side elevation, with the nose of the forming frame being disposed closely adjacent the entranceway to the crumpler section. Meshed spur gears coacting with the crumpler section, coin or stitch the confronting portions of the rolled edges of stock material together, to hold the produced dunnage product in a pad-like configuration. The forming frame mechanism is operable to cause the central coined or stitched section of the pad-like product to be as thin as possible, while urging the stock material into the lateral pillow-like portions of the product, thereby providing greater resiliency to the pad-like product and one of lesser density.

대표청구항 ▼

In a mechanism for producing low density pad-like cushioning dunnange from sheet-like stock material comprising, a support, crumpler means mounted on said support and having an entry opening, and an exit opening spaced lengthwise from said entry opening, said crumpler means being adapted to receive

In a mechanism for producing low density pad-like cushioning dunnange from sheet-like stock material comprising, a support, crumpler means mounted on said support and having an entry opening, and an exit opening spaced lengthwise from said entry opening, said crumpler means being adapted to receive the sheet-like stock material, means for causing inward rolling of the lateral edges of the stock material into generally rolled form prior to passage of the sheet-like stock material into said crumpler means, means coacting with said crumpler means for connecting the confronting rolled edges, resulting in a unitary dunnange product of pad-like configuration as produced from said mechanism, said connecting means including means for pulling the stock material from a supply thereof into said crumpler means, said means for causing inward rolling including a forming frame mounted on said support and disposed generally in line with said crumpler means, said frame adapted to be engaged slidingly with and to press against the sheet-like stock material, said crumpler means being tunnel-like and being adapted to cause the stock material to be generally radially compressed as it passes into and through said crumpler means, said forming frame being generally triangular shaped in plan with the forward end nose portion of the triangular configuration disposed closely adjacent to said entry opening of said crumpler means, said nose portion of said frame projecting into the path of travel of the stock material from the supply thereof to said crumbler means, to cause deflection of the stock material adjacent said entry opening. Paper dunnage product comprising a pad-like article for use in packaging, formed from paper sheet or the like with the lateral edges of the sheet having been generally loosely rolled inwardly and forming radially crumpled pillow-like portions defining the lateral extremities of said packaging article, and means connecting the rolled confronting edges of the pillow-like portions together along the generally central portion of the pad-like article, lengthwise thereof, the last mentioned means comprising lengthwise spaced transversely extending coined portions of said paper material, said laterally arranged pillow-like portions of said article possessing considerable resiliency, each being of a substantially greater thickness than said central coined connected portion, and occasioned by said paper material having been urged outwardly into said pillow-like portions of the formed product instead of remaining in said central connected portion giving said pillow-like portions greater dimension and resiliency, with said central connected portion being comprised of minimum layers of connected paper material as coined, said article having a density of approximately 0.6 to 0.7 pounds per cubic foot as compared to a density approxiamtely one pound per cubic foot for prior art dunnage product pad-like articles of generally similar configuration.