RU2778595C1 - Method for connecting several paper harness into twine (options) - Google Patents

Abstract

FIELD: paper products production.

SUBSTANCE: invention relates to methods for making paper products and can be used to connect several paper bundles into twine. To connect paper bundles into twine, the paper tape is unwound from the reel. The unwound tape is fed into the device for forming the tape and paper bundles are obtained. The paper bundles are connected into twine simultaneously with the manufacture of these bundles into twine before they enter the spinneret. The twine is pulled through the spinneret, wrapping it with paper tape. The twines are pulled through the spinneret again. The paper twine is wound on the twine winding machine.

EFFECT: invention makes it possible to increase the stability of the twist and ensure solidity.

2 cl, 2 dwg

Description

The present invention relates to the interconnection of several paper bundles and paper tapes in the manufacture of twine from long tape material.

There are various ways of connecting twine bundles together and increasing its strength (patent US 3126312, B32B 29/08, op. 09/14/2010; patent SU 168149 A1, B63B 57/02, op. 15.09.1981; US patent 2097299, D02G 3 /08, op. 26.10.1954).

The disadvantages of the known methods is the complexity of the design and the use of chemical reagents for binding cellulose fibers. The addition of chemical reagents complicates the subsequent disposal of paper twine, since it requires the separation of these reagents from waste paper pulp.

Closest to the proposed invention is a method of gluing several paper cords into one, which involves passing a paper strip through several heads to form a paper cord, then applying glue or another substance to the formed paper cord, which facilitates the connection of several paper cords into one bundle, and then passing the resulting a bundle through a device for connecting the cords to each other either by thermal means or by cold gluing with a water-based adhesive dispersion. This method allows the production of a single piece of paper twine, consisting of several paper cords and having increased strength properties. This twine, according to the description, can be used for packing pulp bales instead of traditional steel wire tying (patent RU No. 2722010, B31D 1/00, op. 25.05.2020, Bull. No. 15).

This method has a number of disadvantages, such as a multi-stage technological process that requires the production of individual paper cords before they are combined into a bundle, impregnation of cords with reagents, cord connection in a separate device, and subsequent drawing of the resulting bundle through a spinneret before twisting. And also the disadvantage of this method is the use of reagents that cannot be separated from the paper twine when it is disposed of or if it gets into the pulp dispersal devices together with cellulose bales.

The technical result provided by the proposed invention is the connection of several paper cords into a single cord of paper twine, the strength of which is a multiple of the number of bundles connected and wrapping a single paper cord with paper tape, which increases the stability of the paper tape twist before pulling the paper twine through the spinneret and ensures its solidity.

The specified technical result according to the first variant is achieved by the method of connecting paper tows into twine, in which the paper tape is unwound from the reel, the paper tows are connected into twine simultaneously with the manufacture of these tows from paper tapes, the tows are pulled through the die, the tows are wrapped with paper tape and then pulled through the next spinneret before winding on the twine winder.

The specified technical result according to the second variant is achieved by the method of connecting paper tows into twine, in which the paper tape is unwound from the bobbin, the paper tows are connected into twine simultaneously with the manufacture of these tows from paper tapes, the tows are pulled through the die, the tows are wrapped with paper tape and then pulled through the next spinneret before winding on the twine winding machine, while additionally wrapping the paper twine with paper tapes and pulling the paper tow through additional spinnerets, after which the paper twine is wound on the twine winding machine.

The attached figures 1 and 2 show the formation of paper twine from a plurality of paper tapes, where:

1 - paper tape,

2 - device for forming a tape into a cylindrical bundle,

3 - die,

4 - paper twine,

5 - twine winding machine.

Examples of specific implementation of the method.

Example 1 The paper tape 1 was unwound from the reel, then it was fed into the tape forming device 2 and a paper tow was obtained (Fig. 1). Next, the paper bundles were connected into a twine simultaneously with the manufacture of these bundles from paper tapes before they entered the die 3, they were pulled through it, wrapped with paper tape 1 and re-stretched through the die 3, forming paper twine 4, after which the paper twine 4 was wound on the machine for winding twine 5.

Example 2 The paper tape 1 was unwound from the reel, then it was fed into the tape forming device 2 and a paper tow was obtained (Fig. 2). Next, the paper bundles were connected into twine simultaneously with the manufacture of these bundles from paper tapes before they entered the die 3, they were pulled through it, wrapped with paper tape 1 and re-stretched through the die 3, forming paper twine 4, while additionally wrapping paper twine 4 with paper ribbons 1 and stretched a paper bundle through additional spinnerets 3, after which paper twine 4 was wound on a twine winding machine 5.

The proposed method makes it possible to obtain high-strength paper twine by combining individual twine bundles, wrapping them with paper tape, followed by pulling through a spinneret and twisting.

Claims (2)

1. A method of connecting paper bundles into twine, in which paper tape is unwound from a reel, paper bundles are connected into twine simultaneously with the manufacture of these bundles from paper tapes, the bundles are pulled through a die, the bundles are wrapped with paper tape, and then they are pulled through the next die before winding on twine winding machine. 2. The method of connecting paper bundles into twine, in which paper tape is unwound from a reel, paper bundles are connected into twine simultaneously with the manufacture of these bundles from paper tapes, the bundles are pulled through a die, the bundles are wrapped with paper tape, and then they are pulled through the next die before winding on twine winding machine, while additionally wrapping the paper twine with paper tapes and pulling the paper bundle through additional spinnerets, after which the paper twine is wound on the twine winding machine.

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