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[0001] This application claims priority from provisional application number 60/217,764 filed Jul. 12, 2000.
[0002] 1. Field of Invention
[0003] This invention relates to a protective wrap packing material, and more particularly, to a laminated protective wrap having a hard outer layer with a shock absorbing inner layer adhered thereto.
[0004] 2. Related Art
[0005] Modern continuous manufacturing techniques often produce products that are sold in lengths of hundreds if not thousands of feet. These products are often coiled or spooled then shipped great distances and frequently are exported to customers overseas. Upon arrival, the end user will uncoil or unwind the product from the spoil and process it for their particular application. Two major types of products shipped in this manner are sheet metal coils and fiber optic communication cables.
[0006] In the sheet metal industry, metal coils are transported by truck, by rail, or even by ship and are often handled many times during their transport. During handling, the heavy coils are generally loaded and unloaded using a crane or fork-lift truck and frequently collide with or brush against other coils or other objects. As a result, many coils are often dented, damaging the outer layers of the coil. Before processing, customers are forced to remove the damaged portion of the coil and discard it as scrap.
[0007] In the telecommunications industry, fiber optic cable is spooled in continuous lengths thousands of feet in length for use in extensive networks that span great distances. These spools are of considerable weight and difficult to handle without colliding with other spools or other objects and damaging the cable. If damaged during shipment, that portion of the cable is removed by the customer and is generally unusable due to the costly expense of splicing fiber optic cable.
[0008] In the past, corrugated plastic sheets have been used to wrap both metal coils and fiber optic cable during shipments. Corrugated plastic sheets are durable, versatile and superior to traditional materials, such as cardboard, in many ways. However, corrugated plastic sheets have only hard surfaces, and therefore lack the necessary cushioning or energy absorbing ability required to adequately protect products during extended shipments. Typically, corrugated plastic sheets are supplemented by a foam or cloth liner to provide additional protection in traditional packaging systems. However, using multiple separate layers of material is difficult, costly, and time consuming. Therefore, what the art needs is a protective wrap that combines the hardness of corrugated plastic with the shock absorption of foam or cloth liners into a single sheet that can easily by adapted for use in wrapping around spoils.
[0009] This invention solves the problems encountered with conventional wrapping methods by providing a laminated protective wrap that combines a hard outer layer and a shock absorbing inner layer into a single sheet.
[0010] An aspect of the invention is a laminated protective wrap, including a hard outer layer having a top surface, a bottom surface, a length, and a width; and a shock absorbing inner layer adhered to the bottom surface of the hard outer layer.
[0011] Another aspect of the invention is a method for packaging a coil having an outer surface, a first end, and a second end, including the steps of: (1) wrapping a laminated protective wrap comprising a hard outer layer having a top surface, a bottom surface, a length, and a width, and a shock absorbing inner layer adhered to the bottom surface of the hard outer layer, around the outer surface of the coil such that the shock absorbing inner layer is in physical contact with the outer surface of the coil, and (2) securing the first and second ends of the laminated protective wrap.
[0012] Another aspect of the invention is a method for manufacturing a laminated protective wrap comprising a hard outer layer having a top surface, a bottom surface, a length, and a width; and a shock absorbing inner layer adhered to the bottom surface of the hard outer layer, including the steps of: (1) applying an adhesive to the bottom surface of the hard outer layer, and (2) affixing the shock absorbing inner layer to the bottom surface of the impact resistant layer.
[0013] A feature of the invention is a laminated protective wrap produced in a single sheet that has the strength and durability of corrugated plastic combined with the shock absorption of foam.
[0014] Another feature of the invention is that both single-faced and double-faced corrugated sheets can be used thereby allowing for a wide variety of strength characteristics.
[0015] Another feature of the invention is that the degree of shock absorption can be easily adjusted by varying the thickness and/or material of the shock absorbing inner layer.
[0016] An advantage of the invention is that it provides a protective wrap with greater impact resistance and shock absorption thereby preventing damage to goods during extended shipments and rough handling resulting in less waste.
[0017] Another advantage of the invention is that it provides increased ultraviolet protection.
[0018] Another advantage of the invention is that it makes wrapping a large object, such as a metal coil, easier and less time consuming.
[0019] The present invention is described with reference to the accompanying drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Additionally, the left-most digit(s) of a reference number identifies the drawing in which the reference number first appears.
[0020]
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[0027]
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[0029]
[0030] An embodiment of the laminated protective wrap
[0031] The hard outer layer
[0032] The hard outer layer
[0033] The hard outer layer
[0034] Attached to the bottom surface
[0035] The laminated protective wrap
[0036]
[0037]
[0038] In general, double-faced laminated protective wraps
[0039] An embodiment of the means for bending is depicted in
[0040] The use of transverse cuts
[0041] FIGS.
[0042]
[0043]
[0044]
[0045] While various embodiments of the present invention have been described above, it should be understood that they have been presented by the way of example only, and not limitation. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined. Thus, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments, but should be defined in accordance with the following claims and their equivalents.