What are the most important criteria in choosing a stretch film? - Gongye Packing

What are the most important criteria in choosing a stretch film? - Gongye Packing: a good stretch film is not only the good quality but also save costs,the problem of usage, the stand or fall of a stretch film has five points, tensile strength, tensile strength, toughness, self-adhesive and stress the stranded these a few respects

Stretch film choice by now a lot of packaging industry, its application is very extensive, a good stretch film is not only the good quality but also save costs,

the problem of usage, you should how to choose a good stretch film, the stand or fall of a stretch film has five points, tensile strength, tensile strength, 

toughness, self-adhesive and stress the stranded these a few respects.Below give everybody detailed introduction these a few respects.

①Stress the stranded of stretch film

Stress retention refers to the degree to which the tension applied to the film can be maintained during the tensile wrapping.

②Stretchability of stretch film

The stretchability of the stretch film refers to the maximum stretch that can be applied to maintain all kinds of necessary characteristics for a certain use. The 

stretchability varies with different USES. The greater the stretchability, the less the film dosage and the lower the packaging cost.

③The tensile force of stretch film

Stretching is the ability of a film to produce elastic elongation after being pulled by tension. The increase of longitudinal stretching will eventually make the

film thin and shorten its width. Although longitudinal stretching is beneficial, overstretching is often undesirable. This will make the film thin and easy to tear 

and increase the tension applied to the package.

④The toughness of a stretch film

Toughness is a combination of membrane puncture resistance and tensile properties, tear resistance refers to the film only after the tension and frauds of

tearing resistance, resistance to tear must take risk value of horizontal and vertical direction to that of the machine operation, because in this direction will 

make the package torn loose and even longitudinal tear, package remained strong.

⑤Self-adhesion of stretch film

The adhesion between the stretch film films after contact, in the process of stretching and winding and after wrapping, can make the packaging products 

tight but not loose, self-adhesion is affected by a variety of external factors, such as humidity, dust and pollutants, there are mainly two ways to obtain self-

adhesion film: one is to process the film with smooth and shiny surface; Second, the use of additives to increase the adhesion, so that the surface of the film

produced a wetting effect, so as to improve the adhesion.

This is about how to choose a good stretch film should consider several factors, stretch film is used for all kinds of product packaging and transportation, its

main role is stable packaging, cover protection products, so the choice of stretch film should have high flexibility, not easy to damage, the impact resistance, 

tear resistance characteristics of strong tension.

                                                                                                 

Dongguan Gongye Plastic Packing Co.Ltd is a professional manufacturer of environmental plastic packaging materials with more than 20 years experience,The company has professional technical personnel, advanced production technology and equipments.focus on PVC Stretch Film，PE Stretch Film，Food Grade Cling Film，Packing Belt，Cable Packaging Film，Carton Sealing Tape，Handle For Stretch Film.all products have obtained SGS environmental testing , and in accord with the European Union ROHS standards.we have perfect customizd service and after-sales service,if have any qustions,please feel free contact us.    

Phone：0769-85334677（85358099）
Email:sales@gongyepack.com
FAX:0769-85470909

ADD:#6,HengXi Road,DongShan Kapok Industrial Zone, QiShi Town, DongGuan City, GuangDong Province,China