Classification and advantages of stretch film

June 26, 2019

Stretch film is a kind of thermoplastic film that shrinks during heat during use. It can also refer to a form of packaging that is very popular in the world, that is, the deformation stress generated by forcibly stretching the film by hand or mechanical device. Wrap the goods for storage and transportation. In the production process, the thick film is generally produced by extrusion casting or extrusion blow molding, and then horizontally and longitudinally stretched in a state of high elastic temperature below the melting temperature and above the softening temperature, or one The direction is not stretched, and the orientation is stretched only in one direction. The former produces a biaxially stretched shrink film, and the latter is called a one-way shrink film.

The stretch film can form a very light maintenance outer layer around the product, and the primary maintenance can provide the appearance maintenance of the product. Therefore, the purpose of waterproofing, anti-theft, moisture-proof and oil-proof is achieved. Especially important stretch film packaging can make the packaged articles have uniform force, so as to prevent unnecessary damage to the articles caused by uneven force, which is tape, packing and sleepy. Packaging and other packaging can not be done.

Stretch film can be used for sales packaging and short-distance transportation, such as daily necessities packaging, stainless steel pipe plastic pipe, stainless steel pipe, wrapping wrapping of profiles, transportation packaging, such as wrapping of containers, wrapping of large pallets, etc., and plastic decorative panels. , roll floor, roll carpet wrapping and so on.

According to the method of use, it can be divided into machine stretch film and hand stretch film. The weight of the machine is generally more than 10 kg, and the hand is generally less than 5 kg. The machine film is slightly higher than the hand film. Most of the stretch film is transparent. There are also a few machine stretch films that are black. The black stretch film is mainly suitable for more expensive products. It is not noticed, so it can be effectively burglarproof.

Stretch film is used in many forms, such as sealed packaging, full width packaging, manual packaging, stretch film winding machine packaging, horizontal mechanical packaging, paper tube packaging, small item packaging, tube and cable packaging, tray mechanism packaging. Wait.

There are many advantages to stretch film, such as stretch packaging and raw material, manpower, and time savings compared to shrink packaging. It is a more economical packaging method, which can greatly reduce the cost of use. The packaging cost is only about half of the carton packaging, about 30% of the heat shrinkable film, and about 15% of the original wooden box packaging. In addition, it has high strength and high elastic force, and is suitable for any shape of goods. It is excellent in puncture resistance and tear resistance. It can avoid damage to items during bundling and has good anti-loose, rainproof, dustproof and anti-theft effects. High-performance resins and tackifiers can also be utilized to best meet the diverse needs of users. The stretched film also has very good tensile strength, tear resistance and puncture resistance, and can protect the packaged object from water, dust and damage. Wrap stretch film is available in a variety of styles, single, double sided, micro viscous, low viscous, medium viscous, highly viscous and extra high, suitable for all types of packaging.

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Ms. Justina

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