SU269065A1 - METHOD OF PACKING YARNS - Google Patents

Description

There is a method of packaging yarn in a plastic film wrapper.

The proposed method differs from the known fact that the yarn, wound on the core, is placed in a cylindrical shell of heat-shrinkable synthetic material, the ends of the yarn package are covered with annular plates of elastic sponge-like synthetic resin, the hole diameter of which is somewhat smaller than the diameter of the end entering the pad core. The thickness of the lining exceeds the height of the protruding end of the core, and its outer diameter is the outer diameter of the yarn winding.

Several yarn wraps wound on the cores are placed in one film shell, with each place between each pair of packages: a single intermediate shell;

The film shell with the yarn wrapping enclosed in it and the lining is exposed to a gaseous medium heated to a temperature of 80-250 ° C for 3-12 seconds.

FIG. 1 shows a package of yarn wound on a core; in fig. 2 - cylindrical protective sheath, put on the package; in fig. 3 - packing in one protective shell of two packages; in fig. 4 - the same for another type of package; in fig. five-

packaging in one protective shell of four packages.

The package with yarn 2 wound onto the core 1 (Fig. 1) is placed in a protective

shell 3, made in the form of a cylinder (Fig. 2). The containment shell is made of heat-shrinkable synthetic material, which is selected from the group of materials containing polyvinyl chloride, polyvinylidene chloride, polypropylene 5 polyne, polyamide and polyethylene. The shell has a seam 4, but can be made seamless. On the circumference of the upper and lower edges of the cylinder shell made several slots 5.

The surface of the ends of the package is covered with overlays 6 (Fig. 1). Pads are made of spongy synthetic resin with a certain degree of elasticity. Synthetic resin is selected from the group

materials containing polystyrene, polyurethane, polyethylene and polypropylene. Each pad has a hole 7 for the protruding end of the core 1 to pass through it, and the diameter of the hole is less than the diameter

the core included in it, for example, by 0.2-1 mm, which provides an elastic tight connection of the lining with the core. Thats the thickness of the lining exceeds the height of the protruding end of the core, and the external diameter of the stress is approximately 2-10 mm. The annular protrusions 5 thus formed serve as a reliable protection of the yarn against possible mechanical damage during transport of the packaged yarn.

The protective sheath 3 is put on the package over the yarn and on the linings, usually exposed to the gas medium heated to a temperature of 80-250 ° C for 3-12 seconds. At the same time, due to the presence of the pads, 6 prs from both end surfaces are protected from contact with the gaseous medium. Heat treatment of the protective sheath can cause only a slight increase in the temperature of the yarn, which does not affect its quality. After heat treatment, the protective shell receives heat shrinkage. Its length is reduced by 20-50%, the edge of each end of the shell's shell is pulled out on the corresponding patch and, due to the presence of slots 5. Takes the shape of a polygon, in this case a pentagon (the front part in Fig. 5), adjoins the pads and completely covers the and pads (with the exception of the central zone), providing effective sealing to protect the yarn from mechanical damage, dustiness and other harmful effects.

It is possible to place several varnishes of yarn 2 wound on cores in one protective sheath (Fig. 3). In this case, the upper 9 and lower 10 cores enter into one another, tightly connected to each other. Between the packings have one intermediate annular pad 11, and depending on the shape of the cores 9 and 10, the pad 11 may have an opening of different diameters, ensuring tight contact between the packings by the corresponding core (Fig. 4). Packages so joined are also placed in a protective sheath, which, after heat treatment, shrinks, shrinks the parking lot together without the risk of the relative movement of the jointed packings between themselves inside the shell. In this case, the upper and lower lining

6 remain the same as for the packaging of one package. The plate 11 has a diameter greater than the largest diameter of the yarn winding, and therefore the reliability of protection against harmful influences is not reduced.

Annular recesses 12 can be made on the outer surfaces of the pads (Fig. 1), with the upper edge 13 of the protective sheath extending over the recess with a canopy, which facilitates the subsequent removal of the protective sheath when it is necessary to release the yarn for further processing. Instead of annular grooves, radial grooves can be made. When removing the shell 3, the finger is inserted into the recess under the shell and tear it off.

FIG. Figure 5 shows a group of packages made up of four conical packages 14 enclosed in one protective sheath. Between each pair of packages, one intermediate cover is placed // also with a diameter OD exceeding the maximum diameter of the yarn.

Subject invention

Claims (3)

1. A method of packing yarn in a plastic film sheath, characterized in that the yarn wound on the core is placed in a cylindrical sheath made of heat-shrink synthetic material, The ends of the yarn package are covered with annular linings of elastic spongy synthetic resin, the hole diameter of which is somewhat smaller than the diameter of the end of the core entering the slip, the thickness of the slip evens out the height of the protruding end of the core, and its outer diameter is larger than the outer diameter of the yarn winding. 2. Method of clause 1, characterized in that several cores of yarns wound on the cores of the packages are placed into one film sheath, with one intermediate ring lining being placed between each pair of packages. 3. A method according to claim 1, characterized in that the film shell with the yarn wrapping and linings enclosed in it is exposed to a gaseous medium heated to a temperature of 80-250 ° C for 3-12 seconds. fuz.l 5/7 .S fuz 2 FIG. four // 1i (. fuz 5