US3521747A - Protective wrap - Google Patents

Description

July 28,1970 l. H. Km l 3,521,741'

PROTECTIVE WRAP Filed April 25, 1968 United States Patent O 3,521,747 PROTECTIVE WRAP Isadore H. Katz, 7950 Morningside Drive, Indianapolis, Ind. 46240 Filed Apr. 25, 1968, Ser. No. 724,077

Int. Cl. B65d 85/66 U.S. Cl. 206-53 1 Claim ABSTRACT OF THE DISCLOSURE A protective, cushioning wrap adapted for wrapping on a loaded yarn beam or spool, the wrap beingv of laminated construction having a polyethylene component at the side margins of the Wrap, a component of extensible kraft paper and an uppermost component or layer of creped kraft paper which carries spaced strlps of polyethylene to adapt the Wrap for fastening by pressure sensitive tape. The creped kraft component or sheet has a width substantially the same as the length of the beam or spool between its figures, the'width of the extensible kraft sheet is slightly greater than that of the creped kraft and the polyethylene component extends substantially beyond the kraft layers on each side of the wrap to permit the extending portion to cling to the beam anges protecting the yarn on the spool from contamination by dust, etc.

BACKGROUND OF THE INVENTION Field of the invention The protective wrap of the present invention is particularly adapted for use in protecting delicate yarns. Conventionally, these yarns are wound on large beams or spools and then stored or transported to the site of the Weaving operation where the yarns are played off the beams, at high speeds, by the weaving apparatus. The yarn itself is delicate and requires protection during storing or transport while wound on the beams or spools. Since the yarn must be smoothly unwound, at hlgh speed, during the weaving operation, any crushing of or indentation in the yarn While on the beams can cause diiculty and slow-down of the weaving operation. The loaded beams have a Weight of the order of eight hundred pounds and are usually lifted onto the weaving equipment by belt slings passing under the yarn and between the end flanges of the beam. The weight of the yarn load itself thus applied to the yarn adjacent the sling rnakes it desirable that some type of cushioning means be provided to take up at least a portion of this compressive force on the yarn. Since the yarn, wound on the beams, may be'stored for extended periods in warehouses where temperatures may fluctuate widely, protection of the yarn y from dust or other contaminants is essential.

Description of the prior art SUMMARY The wrap of the present invention utilizes a soft, ilexible dust, moisture and gas impervious component, preferably polyethylene, which extends from the side margins of the wrap and clings to the adjacent end flanges of the beam or spool to substantially seal the yarn against dust and other contaminants. A smooth surfaced, flexible maice terial such as a kraft sheet having a width slightly greater than the distance :between the end flanges of the beam underlies a flexible cushioning sheet such as creped kraft paper which forms the outer'surface of the wrap and performs the cushioning function referred to above. Spaced, longitudinal portions of the rough outer surface of the cushioning sheet are smoothed by, for example, adhering longitudinal strips of smooth surfaced, ilexible rmaterial such as polyethylene, these providing smooth surface areas upon which pressure sensitive tape may be applied to hold the protective covering after it has been wrapped on the yarn carrying beam.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an end sectional view of a protective Wrap embodying the present invention.

FIG. 2 is a fragmentary, bottom plan view of the wrap shown in FIG. 1.

FIG. 3 is an end view of a typical beam or spool on which yarn is wound.

FIG. 4 is a fragmentary side sectional view showing the wrap of FIGS. 1 and 2 in place on a beam on which yarn has been found.`

FIG. 5 is a schematic, end view of a modified form of the wrap shown in FIG. 1.

FIG. 6 is a schematic end view similar to FIG. 5 but showing a further modified form of the wrap.

FIG. 7 is a schematic end View, similar to FIG. 6, but showing a further modified form of the wrap.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring initially to FIGS. 1 through 4, the wrap is laminated and is made up of an underlying sheet of ilexible, contaminant-impervious sheet 10, which, preferably, is formed of polyethylene. Strip laminated to the polyethylene sheet 10, by means of adhesive strips such as indicated at 11 in FIG. 2, is4 a sheet of extensible kraft paper 12. Solidly laminated to the sheet 12 is la creped kraft paper sheet 13. The somewhat rough face of the sheet 13 provides shock absonbing characteristics to the wrap. The smooth underface of the sheet 12 protects the polyethylene sheet 10 and the underlying yarn from the rough surface of the cushioning sheet 13. Since the rough surface of cushioning sheet 13 does not readily accommodate pressure sensitive adhesive tape such as might be used to hold the Wrap in place on a yarn beam to be subsequently described, strips of smooth faced material, such as polyethylene strips 14 may be adhered to the sheet 13, the strips 14 providing a smooth face readily accepting a pressure sensitive fastening tape (not shown) As may best be seen in FIGS. 3 and 4 the Ibeam on which the yarn is wrapped is generally spool-shaped with a central barrel portion 16 and spaced end flanges 17 between Lwhich the yarn is wrapped. The beams are relatively large and can be formed of aluminum or similar material, their dimension on the parts accommodating the yarn being machined to very close tolerances and finished very smoothly.

Yarn, indicated at 21 in FIG. 4, is wrapped at high speed on the -beams to a height near the circumferential edge of the end flanges 17 as indicated in FIG. 4. After the beams have been loaded with yarn, the wrap of the present invention is applied by Winding it over the yarn and fastening it by pressure sensitive tape or other means.

The wrap in place upon the beam is shown fragmentarily in FIG. 4. It will be noted that, when in place, the polyethylene extending strip 10 folds against the adjacent surface of the beam flange and serves to substantially seal the yarn from contaminants such as dust, etc. The extensible kraft sheet 12 is deformed upwardly somewhat, overlying a small portion of the polyethylene sheet at the beam ange, and the crepe kraft sheet 13, presents a rough, shock absorbing outer surface to the wrap and lies, because of its relative stiffness, between the two end anges of the beam with its marginal edge abutting the slightly folded edge portion of the extensible kraft sheet 12. The difference in width dimension between the elements 10, 12 and 13 which is plainly evident in FIG. 1 has an important functional aspect as pointed out with reference to FIG. 4.

FIG. illustrates a modified form of the wrap in which the polyethylene side flanges' which flexibly lie against the adjacent beam end flanges are identied at 31 and they are held between the extensible kraft sheet 32 and the creped kraft sheet 33 which are solidly laminated together. Polyethylene tape strips 14 may also be provided on the outer face of the sheet 33. The structure of FIG. 5 thus differs from that of FIG. 1 only in that the polyethylene component is composed of strips 31 at each side margin of the wrap rather than formed lby a polyethylene sheet extending completely across the wrap.

A further modified form of the wrap is shown in FIG. 6 in which the polyethylene component is formed of flanges or strips 41 which are adhered to the adjacent portions of the extensible kraft sheet 42, the kraft sheet being solidly laminated to the creped kraft sheet 43. Again, polyethylene strips 14 may be adhered to the outer face of the sheet 43 to accommodate pressure sensitive fastening tape. The wrap of FIG. 6 thus differs from that of PIG. 5 only in that the polyethylene extending portions 41 are adhered to the under face of the extensible kraft sheet 42, rather than interposed between the extensible kraft sheet and the creped kraft sheet as in FIG. 5.

A further modified form of the wrap is shown in FIG. 7 in which the polyethylene component is formed in anges or strips 51 adhered between the extensible kraft sheet 52 and the creped kraft sheet 53, as in the construction of FIG. 5. The polyethylene strips in the structure of FIG. 7, however, are folded over on themselves and their margins adhered to the outer face of the sheet `52. The fold area, indicated at 51a, contacts the beam flange to provide the sealing function. Polyethylene strips 14 may be adhered to the outer face of the sheet 53 to accommodate pressure sensitive fastening tape.

While the invention has been disclosed and described in some detail in the drawings and foregoing description, they are to be considered as illustrative and not restrictive in character, as other modifications may readily suggest themselves to persons skilled in this art.

What is claimed is:

1. A protective cushioning Wrap for a beam on which delicate yarn or the like has ibeen wound, the 'beam being generally spool-shaped and having end flanges between which the yarn is wrapped on the spool to a point just short of the circumferential edge of the end flanges, said Wrap comprising a continuous sheet 0f smooth llexi'ble material solidly laminated to an overlying sheet of cushioning material, said smooth sheet having a width slightly greater than the distance between the beam end flanges and said cushioning sheet having a width slightly less than the distance between the beam end anges, said wrap further having a flexible, contaminant-impervious strip extending substantially lbeyond each of the side margins of the smooth sheet and adapted to fold against the beam side flanges when the wrap is installed on a loaded beam, said cushioning sheet having a rough outer face, and spaced strips of smooth surfaced flexible material adhered to said rough outer face to facilitate fastening of the Wrap in place on a beam.

References Cited UNITED STATES PATENTS 2,127,029 8/ 1938 Hermanson 229-91 X 3,128,135 4/1964 Ege 206-59 3,437,196 4/ 1969 Kulka .206-53 FOREIGN PATENTS 228,570 6/1960 Australia.

JOSEPH R. LECLAIR, Primary Examiner U.S. Cl. X.R. 206-59

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