The physical indexes of food stretch film

it is well known that stretch film is a kind of packaging materials, packaging industry with the development of packaging technology in China, the unitary way of packing is more and more widely used, and stretch film with high strength, good ductility, strong resilience, vertically tear resistance good, durable performance is good, since the viscosity can be good, and the advantages of non-toxic, tasteless,

many for stretch film is not to understand, so what are the physical index of the stretch film?

here by our guy in food packaging manufacturer to introduce:

1, keep tension: stretch film after stretching a certain proportion, maintain the state of a certain time of the ratio of tensile force and the force F value to maintain tension.

2, sticky: stretch film in the condition of stretching or not stretching, tackiness between two layers of membranes.

3, permanent deformation, stretch film after stretching a certain proportion, increasing the ratio of length to the original length.

4, elastic recovery: stretch film in tensile proportion maintain this state after a certain time, the release of the ratio of recovery after size with the original size.

5, resist Pierce: used to denote stretch film needle wear resistance. Used in food packaging of stretch film when protection packaging food should have the ability, in order to avoid the packing damage caused by such bad food spoilage.

6, light transmittance, haze: stretch film in use need to have good transparency.

what are above physical index of the stretch film to share here, the requirements of the stretch film technology is divided into three parts: the size and specifications, appearance and physical and mechanical properties.

want to customize the quality qualified excellent stretch film can contact our food packaging manufacturers. Food packaging manufacturer of professional custom production stretch film more than 10 years, the company has a class 100000 clean production workshop and the production process automation.

as stretch film manufacturer, we are professional ShenKai. To customize in stretch film production for many years, we always work to guarantee the quality of packaging material supply stability, accuracy, delivery quantity and delivery time of each work coordination.