automatic shrink wrapper
flow shrink wrapper

The fully automatic shrink wrapper is a machine that wraps the product with heat shrink film and then heats it to make the film shrink and wrap the product. And with the appearance and environmental requirements, how to choose shrink film for automatic shrink wrapper is also one of the hot concerns; and now very popular POF shrink film is the first choice, toughness, anti-tear, high transparency, high shrinkage and environmental non-toxic.

Because the production efficiency of the automatic shrink wrapper is very high, reducing unnecessary extra shrink film loss will also greatly save packaging costs and respond to environmental protection and saving policies. it needs to consume a lot of shrink film, so it is very important to select the appropriate shrinkage film size for the automatic shrink wrapper. Here, with reference to the shrinkage and characteristics of the film, SNCPACK focuses on the use of POF shrink film shrink wrapper, how to determine the size of the shrink film.

 

First, for flow shrink wrapper using single layer POF shrink film, please refer to the following format

Width of POF shrink film

1.[Package width (inch) + package height (inch)] x 2 + 2.0 "(when the package height is less than 2.5 inches)

2.[Package width (inch) + package height (inch)] x 2 + 2.5 "(when the package height is 2.5 inch to 4.5 inch)

3.[Package width (inch) + package height (inch)] x 2 + 3.0 "(when the package height is more than 4.5 inches)

 

Second, about shrink packing machines such as fully automatic L seal and edge seal shrink wrapper. It needs to be taken into account that they use a center folded shrink film, that is, double layer, where the width of the shrink film refers to the width of the folded (double layer).

Width of POF shrink film (after center folding)

1.Package width (inch) + package height (inch) + 4.0 "(when the package height is less than 3 inches).

2.Package width (inch) + package height (inch) + 4.5 "(when the package height is between 3 inch and 6 inch)

3.Package width (inch) + package height (inch) + 5.0 "(when the package height is over 6 inch)

The length of the package is the direction of balance with the shrink film, Therefore, this length does not need to be taken into account when calculating the film width, and the package width mentioned above refers to the direction parallel to the sealing line of the shrink wrapper, rather than the product length of the popular concept, because sometimes it is better for the product to feed vertically when packing. At this time, the width of the package refers to the length of the product.


Finally, the selection of the thickness of POF shrink film, Finally, with regard to the selection of the thickness of the POF shrinkage film, we only focus on the standard POF film (the shrinkage is 55% Mel 60%). The optional thickness is basically from 12 µm to 30 µm, and the shrinkage temperature is from 140 ℃ to 170 ℃. If the weight of the product is about 1kg, you can use 12 µm to 15 µm; if you exceed 2kg, you can choose a thickness of more than 19 µm. The standard thickness on the market are 12µm, 15µm, 19µm, 22µm,29µm; there are also other special films such as 9 µm thickness, soft POF, Lower temperature shrink POF film, Cross Linked POF film. Please contact the sales staff of SNCPACK and we will provide the most appropriate suggestions.