DE2251077A1 - THREAD CARRIER - Google Patents

Description

Dr. day- Waltsr Abftz
Dr. Dieter F. Wort
Dr. Hans-A. Erauns _; . · /

28

October 18, 1972 L- 215

E. I. DU PONT DE NEMORS AND COMPANY 10th and Market Streets, Wilmington, Del. I9898, V.St.A,

Yarn carrier

The invention relates to improvements in yarn carriers, e.g. on bobbins, cross-wound bobbins, tubes and bobbins, as well as the numerous carrier forms that are used for winding Winding made of textile material, e.g. made of twisted threads, single threads and fibers, hereinafter referred to as yarns are made of cotton, wool, silk, rayon, materials on polyamide, polyester or Polyaeryl-based and especially made of spandex.

Yarn carriers are consumed in large quantities and inevitably, numerous attempts have been made to improve them. One type of yarn carrier has a core made of paper, which is cheap and inexpensive, namely as a helical roll.

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can be made, the strength is sufficient as long as the core does not absorb water, which is why a External coating with plastic can be provided. This outer plastic coating prevents Liquids from penetrating the paper core, and with a suitable choice of an appropriate plastic coating a surface can be produced which has the necessary roughness properties for winding of the beginning of the yarn. Such carriers and their advantages are for example in the British patents 716 036 and 993 228 and U.S. Patent 2,765,129. Despite their advantages, however, such carriers have complaints about excessive Amounts of equipment in the inner layers of the wrap, i.e. the plastic coating of the wearer immediately adjacent layers of yarn. This problem is particularly severe with spandex yarns, in particular for spandex yarns that require large amounts of equipment (more than 3.5% of the yarn weight), e.g. equipment based on silicone and which are used e.g. for winding warp beams. Some trees are generally wound from the same yarn winding of a bobbin frame. The inner layers of the wrap have amounts of equipment that are significantly larger than the quantities in the outer layers and therefore the last tree wrapped from these coils shows accordingly more equipment than the earlier trees and must therefore be wrapped at a slower speed. Close Lich other complaints can arise because equipment occasionally drips if it is too large Quantities are used.

In the case of the usual wraps, there was thus a serious problem of the occurrence of an excessive

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Avoid finishing in the inner layers of yarn; This was especially true for spandex * yarns , which initially have a relatively high amount of finish, especially yarns with low denier numbers *. For example, 70 and less »...... ...

According to the invention, a yarn carrier .mit a.ne?n. Core.off absorbent material and with a., plastic cover, layering provided j the one winding surface for the Represents yarn and is provided with perforations.

The core made of absorbent material and the plastic coating can be made of any conventional material. The Kunststoffbeschichtung.bietet a useful Wiekeiflaehe _s having for textile yarn • erförderliche roughness durch'die while excess amounts equipment perforations in the plastic coating in the underlying core of absorbent material penetrate Jönnen that absorbs this equipment "The core is preferably made of paper, For example, made of kraft paper and can be produced in the usual way, for example by screw-like winding or by pressing. A self-supporting film is preferably chosen as the plastic layer, preferably a ^{vinylidene copolymer or cellulose acetate known under the trade name "Sarah 11} ", which is produced in the usual way, for example, can be applied to the core, such as injection molding or shrinking.

* The openings can have any shape and be arranged in any way; they can by cutting the plastic with a knife _s dnrefo punching the ©

Using a toothed wheel or other tool on either a self-supporting film establish its application to the core or after the film is bonded to the core. Appropriately The plastic can be punched in situ on the core so that notches appear in the core that are on the same Place like the perforations in the plastic, creating the surface of the opposite of the equipment exposed material is enlarged without the core weakened inadmissibly or an impermeable Layer is pierced, which can be provided so that the equipment does not penetrate the entire core (see patent application 70 05987 in the Netherlands).

Preferable are cylindrical tubular supports from 2 to 5 inches (5 to 12.5 cm) long, 3 to 5 inches (7.5 to 12.5 cm outside diameter and l / H to 3/8 inches (6.5 mm to 1 cm) wall thickness.

You already have yarn carriers through the entire carrier reaching openings for dyeing or other treatments of the yarn in a wrap on the carrier used. For this purpose, the perforations were necessarily made through the entire beam, so the paint or other treatment liquid pass through the perforations and get in contact with the yarn. or the inside of the coil, as described, for example, in British patent specification 177 054 and is in contrast to the present invention.

The invention will be described again with reference to the drawings, in which corresponding reference numerals indicate the same items and represent the following:

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Figures 1 and 2 are perspective views of different embodiments of the invention;

Fig. 3 and 4 sectional images through the carrier according to . . The Figs. 1 and 2, respectively.

According to FIGS. 1 and 3, a carrier 10 for textile yarns consists of a cylindrical tube as core 12 on which a plastic coating 14 lies through the openings 3L6. .to lead , ". --

According to Figures 2 and 4, the carrier 10 'consists of a core 12' with a coating film 1, H * covering it. the perforations 16 of which are made when the film 14 was already on the core 12 ', so that the tool producing the perforations has caused notches 17 in the core 12'; the core itself consists of an outer layer 24 and an inner layer 22, between which an impermeable plastic film 20 lies. After the drawing, the impermeable film 20 is preferably about one third of the distance between the inside 18 and the outside - 19 of the core 12 'from the inner side 18, that is, the outer layer 24 is about twice as strong as the inner layer 22nd ...

It is a preferred embodiment that the core consists of an inner layer and an outer layer, between which an impermeable plastic film is located. . = ._. ,,; .

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In a further preferred form, the core has notches provided that are in the same place as the openings.

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Claims (1)

L-215 Godfather η ta η s ρ ruch Carrier for textile yarn, with a core (12) made of absorbent material and a yarn winding surface (14) made of plastic, characterized in that the yarn winding surface (14) has openings (16). -7 3 0.9 B 1 7 / Ü8A2 L e r s e i t 'e