How to Choose Stretch Film Machine?

Choosing the right stretch film machine is crucial to meet your needs. This article will introduce several key factors to consider when choosing a stretch film machine, as well as related guidelines to help you find the most suitable machine.

1. Pre-stretch capacity

The pre-stretch capacity of the stretch film machine determines the extent to which the film can be stretched before attaching the goods. A higher pre-stretch capacity can produce a thinner film and reduce the amount of material used.

Pre-stretch capacity is closely related to stretch film quality and cost savings.

(1) The most efficient machine can pre-stretch the film to 400%.
(2) Lower efficiency machines usually have less than 190% pre-stretch capacity.

2. Membrane type

What are the three main types of stretch film?

(1) Handmade stretch film
(2) Machine stretch film
(3) Super strong stretch film.

Each type has optimized characteristics that affect cutting and winding feasibility.

What are the factors that affect the choice of membrane materials?

(1) Ultimate stretch rate
(2) holding power
(3) Puncture resistance
(4) Tear propagation resistance
(5) Adhesion

3. Stretch rate

The stretch rate of the stretch film machine determines the pressure exerted on the goods, thereby affecting the stability of the wrapped goods. The machine can usually be set to a stretch rate such as 200%, 250% or 270%.

The appropriate stretch rate depends on the weight and characteristics of the goods being wrapped.

4. Film thickness

The thickness of the film is called the film gauge, with lower gauges indicating thinner films and higher gauges indicating thicker films.

It is important to choose a specification suitable for the weight and stability of the cargo. Pre-stretched film typically comes in sizes ranging from 25-42, with load capacities ranging from 1800-4000 pounds.

5. Cargo characteristics

The characteristics of the goods being wrapped will also affect the choice of stretch film machine. Goods with sharp edges or uneven contours may require packaging in a different type of film than regular flat edges.

The weight of the goods is also a factor to consider, with lighter goods requiring less force to pack efficiently.