You are here: Home >> News

Do you Understand Cordstrap Strapping?

May. 13, 2020

As a Composite Strap Factory, share with you. The packaging strapping tape is made of polyethylene, polypropylene resin, cold-rolled strip steel, and some are made of nylon and polyester. They are made by unidirectional extrusion and heat-treated. In addition to corrugated box sealing, bundling, hot-rolled steel coil bundling, cold-rolled steel coil bundling, glass, pipes, materials, fruits, etc. can also be bundled.

Composite Strapping

Composite Strapping

Packing tape is a kind of packaging material with a wide range of usage. There are many kinds of packaging materials. According to different classification methods, the following aspects can be classified:

1. The PP material produced can be divided into cored belt and solid core belt;

2. According to the quality of the product, it can be divided into transparent A level, transparent B level, A level, AB level, B level, BC level and C level, etc .;

3. It can be divided into manual packing belts and machine packing belts from the used packing machine;

4. In terms of use, it can be divided into packaging straps and handicraft straps;

5. It can be divided into printing tape and non-printing tape according to whether it is printed or not;

6. From the point of view of the ability to bear, there are mainly PP packing belts, PET packing belts and metal packing belts;

7. The source of raw materials for making packing belts can be divided into brand new material packing belts and recycled material packing belts;

8. From the color point of view, there are mainly white packing belt, gray packing belt and color packing belt.

The manufacturing process of PP strapping is firstly the temperature control of the extruder, generally 250 ℃ ~ 280 ℃. The next step is cooling. After the material is taken out of the machine head, the temperature is very high. It is necessary to immediately enter the water to cool, because the isotactic polypropylene is prone to generate a crystalline structure under the condition of rapid cooling, and the molecular structure of the crystalline is loose. It is easy to stretch the orientation and obtain high-quality products. Then the stretching, the purpose of stretching is to increase the longitudinal strength of the strapping and reduce the elongation. Stretching must be carried out in boiling water, generally using a stretch. Finally, there is embossing. The stretched baling belt passes through two patterned pressing rollers and is pressed onto the pattern. Its function is to increase friction during use, without slipping, and it looks beautiful from the outside.

PET steel belt

PET belt is a new type of strapping belt which is popular in the world instead of steel belt.

Widely used in steel, aluminum, chemical fiber, cotton spinning, tobacco, paper, metal cans and other industries.

Small elongation: the elongation is only one sixth of the PP belt, which can maintain the tension for a long time.

Strong temperature resistance: the melting point is 260 degrees, and it is not deformed when used below 120 degrees.

Good flexibility: no sharp edges of the steel belt, safe operation, neither hurting the hands nor damaging the objects.

Beautiful appearance and no rust: no steel belt is rusted to pollute the objects to be bound, and the color is bright.

Our company also has Composite Strapping for sale, please contact us.


Copyright © Qingdao Strapping Pack Co.,Ltd. All Rights Reserved

WhatsApp