IL23238A

IL23238A - Textile tube

Info

Publication number: IL23238A
Application number: IL2323865A
Authority: IL
Original assignee: Canadian Ind
Priority date: 1964-05-07
Filing date: 1965-03-26
Publication date: 1968-09-26
Also published as: CH420941A; NL6505648A; DE1921536U; ES312708A1; BE663567A

Description

■ PATENTS AND DESIGNS ORDINANCE SPECIFICATION "TEXTILE TUBE" We, CANADIAN INDUSTRIES LIMITED, a Canadian Corporation of 630 Dorchester Blvd. , West. Montreal, Province of Quebec Canada, DO HEREBY DECLARE the nature of this invention and in what manner the same is to be performed to be particularly described and ascertained in and by the following statement: - This invention relates to textile tubes and, more particularly, to an improvement in the surfacing of paper tubes used in the textile industry as a core for winding thereon filament yarn.

Textile tubes comprising a plurality of wound plies of paper have been used for a long time in the textile industry as carriers for lengths of filament yarn supplied by primary yarn producers to textile manufacturers. Such paper tube yarn carriers possess the advantage of low cost and hence heed only be employed once and thence discarded, thus eliminating the need to return the empty yarn carriers to the primary yarn producers. It has been found, however, that low cost paper tube yarn carriers are not satisfactory for use with fine denier yarns, that is, yarns below about 100 denier. When yarns of below about 100 denier are wound on low cost paper tube yarn carriers, the fine yarn filaments tend to adhere, or snag on seams or other imperfections in the surface of the tube causing broken filaments, slubs and yarn breaks when the layer of yarn next to the tube is removed. In addition, the yarn in contact with the tube surface tends to splay, which causes difficulty in subsequent joining of yarn ends and may result in visible imperfections in the fabric in which the yarn is incorporated.

To overcome the aforementioned difficulties, the textile industry has normally employed hard surface, metallic tube yarn carriers for fine denier filament yarn. Such yarn carriers, while overcoming the problems noted heretofore, have resulted in high cost to the primary yarn producers. Since the initial cost of metal tube yarn carriers is high, it is necessary that they be returned to the yarn suppliers for re-use. Before re- use, metal tubes normally require careful inspection for damage and, when necessary, surfaces in contact with the yarn must be refinished and buffed. In an attempt to overcome the high cost of metal tube inspection and refini-shing operations , some yarn suppliers have employed removable, disposable, hard moulded plastic sleeves over the metal tubes. However, such plastic sleeves are themselves expensive to manufacture and do not eliminate the necessity of returning the metal core tubes to the yarn suppliers.

It is an object of this invention to provide an improved paper textile tube which may be economically manufactured.

A further object of this invention is to provide a paper textile tube with a smooth, seamless surface, which may be used with fine denier filament yarns.

A still further object of the invention is to provide a paper textile tube for fine denier yarn which may be disposed of after single use.

These and other objects of the invention will appear hereinafter.

The improved textile tube of the invention comprises, in combination, a fibreboard tube consisting of a plurality of wound plies of paper and an exterior sheath consisting of a thin-walled sleeve of resilient thermoplastic material.

The fibreboard tube may be any usual convolute or spiral wound paper tube well known in the art. For textile yarn carrying purposes, such a tube normally comprises 5 to 15 plies of kraft, or similar grade paper. The plies are held together by means of an adhesive. The wall thickness of such a tube normally varies from about 1/8 to about 3/4 inches and the tube may vary from about 6 to about 30 inches in length.

The resilient thin-walled outer sleeve of the textile tube of the invention may be of any suitable thermoplastic material. Polythene has been found suitable but it will be apparent to those skilled in the art that other kinds of materials may be successfully employed. It will be appreciated, however, that a material which is unduly soft and lacks resistance to the cutting action of the yarn filaments is not suitable. Similarly, a material lacking sufficient resiliency and smoothness is not suitable. Thin-walled plastic tubing known in the art as "seamless" or "lay-flat" tubing is preferably employed in order that no ridges or seams are presented on the surface of the textile tube.

The resilient outer sleeve may be simply applied to the fibreboard core by selecting a section of resilient thin-walled plastic tubing of diameter slightly less the the outer diameter of the fibreboard core and of suitable length, and stretching said tubing and pulling it over the fibreboard core by manual means or by means of appropriate apparatus adapted for the purpose. Because of the resilient elastic nature of the sleeve material, a firm bond is achieved between the sleeve and the fibreboard core. Any excess in length of sleeve material beyond the length limit of the fibreboard core may be simply cut away by suitable cutting means.

It will be apparent form the above that the improved textile tube of this invention represents an economical solution to a long felt .need in the textile trade. The assembled fibreboard tube and outer resilient plastic sleeve provide a simple and efficient means of obtaining a smooth, seamless surface suitable for fine denier filament yarn. Additionally, such a textile tube, because of its low cost, may advantageously be discarded after use and so eliminates the high cost normally associated with the purchase, maintenance and reuse of metal tubes. Because of its smooth and resilient outer surface, no problems of snagging, breaking or damaging filaments or splayed ends are encounteredr.

Claims

Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed* we declare that what we claim is:

1. A low cost seamless textile tube comprising, in combination, a fibreboard tube consisting of a plurality of wound plies of paper and an exterior sheath consisting of a thin-walled sleeve of resilient thermoplastic material.

2. A textile tube as claimed in Claim 1 wherein the thin-walled sleeve has a thickness of from .002 to .010 inch.

3. A textile tube as claimed in Claim 1 where in the thin sleeve is made of polythene. DATED this 25th day of March, 1965. Agents or pp cants