Technology does not stand still, the same trend is visible in the packaging materials industry. However, there are such unshakable and irreplaceable things over which neither progress nor time has power, paper twine refers to such products.
old friend
Twine is well known to us since childhood: they tied parcels in the mail, dragged gifts in wrapping paper, cakes, used them in the garden to fix vegetable crops to the base. Unappealing in appearance, but so irreplaceable in everyday life, it still regularly serves in many industries and farms.
The first mention of the use of paper cords can be found in stories of needlework of the 30s of the last century. In wartime, everyday objects (bags, carpets), tents and even clothes were made from it. Later, twine was forgotten for a certain period, but in the 80s a new surge in the popularity of household goods began. This is due to the emergence of the production of paper bags, as well as the development of design and creative activities.
Description of paper twine
An element of the packaging assortment is twine twisted from strong and dense strips of paper. In its production, high-strength wrapping material is used. As a rule, kraft paper is used, in the manufacture of which low-boiled long-fiber sulfate pulp is used. Sometimes bast or synthetic fibers are added to paper twine.
The natural color of the product in the manufacture is gray-brown, the diameter varies from 1.1 to 4.8 mm. In the 80s in Italy, new technologies for dyeing twine appeared, which were immediately picked up by industrialists around the world, and now manufacturers of paper twine can produce twisted paper rope of any color.
Twine, like other paper products, is afraid of moisture. It should be noted the main advantage of the material - it is environmentally friendly, everyone can work with it without exception (children, adults). This product is environmentally friendly, waste can be reused for the production of paper of 2 grades or cardboard. In addition, twine is not destroyed by prolonged exposure to ultraviolet rays, is resistant to temperature fluctuations, has a low weight, retains its shape for a long time and is easy to operate.
Waste material is easily burned in a landfill or quickly decomposes under the influence of precipitation, without harming the environment.
Manufacturing technology
The production of paper twine is not complicated: prepared cut strips of kraft paper with a density of 20-60 g / m 2 are mechanically folded on twisting machines in one direction. Finished ropes are wound on mounted bobbins of cylindrical or conical shape. If necessary, the fibers pass through such technological operations as paraffin impregnation, dyeing in the desired color, and drying. The diameter of the final twine depends and is equal to the width of the strip of kraft paper. The winding speed of a twisted finished thread, that is, the pace of its manufacture is about 40 meters per minute.
Used machines are double-head and single-head, often used simultaneously with twine rewind devices, which allow you to get a coil without sleeves at the output. This is an additional advantage for the free unwinding of coils and a prerequisite for the manufacture of pens from paper twine on bag making machines.
The weight, diameter and size of the coils (bobbins) is regulated and varies depending on the requirements of the customer and the conditions in which the twine will be used.
Performance and performance
The material is made in accordance with GOST 17308-88 “Twine. Technical conditions. " According to him, the following technical characteristics of paper twine are regulated during production:
1. The diameter of the twine (1.1-4.6 mm for paper twine).
2. Nominal linear density - the ratio of the mass of fibers to the length (units of measure - tex), planned for production in production. For household twine, its value is 0.84-5.6 tex, depending on the diameter.
3. Type of finish: polished with paraffin, unpolished.
4. Breaking load - the greatest force held by the fiber. According to GOST, for paper twine with a diameter of 2.8 mm, its value is 6.5-8 kgfs, while for materials made from natural yarns - 58.8 kgfs, and synthetic ones - 73.5 kgfs.
In accordance with the technical conditions, the humidity of the finished threads should not be higher than 17%. Twine has medium stiffness, is flexible, fits well and can withstand knots.
Home-made
One of the easiest and most inexpensive ways is to make do-it-yourself paper twine from toilet paper:
- A more dense option is suitable, it is desirable that it be corrugated.
- A roll in one layer is tightly wound onto a long knitting needle, wire or any other twig.
- After that, you should remove the base and twist the resulting twine.
- To reel the finished twine, you can use a jar or any cylindrical vessel.
- Continue repeating steps 1-4 until the desired length of twine in the spool.
Application
Paper twine easily fits into any shape, environmentally friendly, has a low cost, practical. Thanks to these properties, it has gained its high popularity and is used in the following areas:
- design - used to decorate and create interior elements;
- as handles for paper bags;
- packaging of light goods, gifts, food (cheeses, sausages, confectionery);
- household and everyday needs (garter plants, dressing documents in archives, rewinding gifts);
- binding of hay and straw bales in agriculture. Scraps of paper twine in contact with animal feed will not do them much harm, as would be the case with synthetic materials;
- needlework - used for various types of weaving, knitting, making crafts.
Twine is used to create the following products:
- Elements and furniture: chairs with wicker seats, tables. The goods have an original look and unique style, perfectly decorate the interior of country houses or cottages.
- Baskets for linen, children's toys, flowers, vegetables, bread, storage of trifles. Textured, designer, vintage and other wicker baskets are fashionable and very popular today, they perfectly create coziness and decorate the house.
- Dolls, children's toys, animal figures.
- Products for animals: various types of claws, houses, toys. The material has a neutral odor that does not irritate pets. Durability and appearance are not inferior to similar products from other more expensive and modern materials.
- Lamps, floor lamps, lampshades. In the manufacture, the rope is impregnated with a special tool that prevents the occurrence of fire.
Crafts, panels, decoration of various objects, creative ideas of designers, crafts, souvenirs and so on.
Product disadvantages
Due to the characteristics of paper, as a starting material in the manufacture, the resulting twine has several disadvantages:
- can not be used repeatedly - loses its properties, does not withstand the load
- low moisture resistance - when wet, softens and breaks at the slightest load;
- low strength.
Where and how to buy twine
Since paper twine is a very popular type of rope, you can buy it at a hardware store or any hardware store. In Russia, it is produced in Kazan, Moscow, Omsk, Novosibirsk, Ivanovo, Yaroslavl, Volzhsky, Yekaterinburg, Chelyabinsk and other cities.
For industrial needs, goods are produced in skeins of 500 meters and above, for households, the optimal form of release is reels of 50-60 meters. The cost depends on the diameter, length, type of processing, color and manufacturer. The average price of paper twine per kg is 140-175 rubles. Of course, it cannot compete in products (strength, resistance to moisture) with products made from bast or chemical fibers. However, due to the low cost and absolute environmental safety, paper twine is indispensable in the field of packaging materials (strapping) and as pens for paper bags that are fashionable and common now.