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The air-ring cools the film as it travels upwards. In the center of the die is an air outlet from which compressed air can be forced into the center of the extruded circular profile, creating a bubble. This expands the extruded circular cross section by some ratio (a multiple of the die diameter). This ratio, called the “blow-up ratio” can be just a few percent to more than 200 percent of the original diameter.

The air cooling system, air ring,  is an integral part of any blown film line. It greatly affects not only the heat transfer from the molten polymer film but also the formation and stability of the bubble. For most blown film bubbles the shape is primarily determined by mechanical manipulations and aerodynamics. The importance of heat transfer in film blowing modeling, as bubble cooling ultimately affects both production rates and final film properties.  Used Dual Lip and Single Lip air rings are available here in this section, and new air rings can be quoted as well from our new machinery section or by contacting us.  The air ring is a commonly overlooked component that will increase output and control film variations.

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Image
Sku
Name
Type
Stock Order
Description
Size
Min-Qty
Dual Lip
19
13" Dual Lip Air Rings
13
Dual Lip
19
20" Sano Dual Lip Air Rings
20
Dual Lip
180
11" Sano Dual Lip Air Rings
11
Dual Lip
412
1.25" ID Dual Lip Air Rings Future Design
1.25
Dual Lip
1353
12" Alpha Marathon Dual Lip Air Rings
12
Dual Lip
1577
28" Davis Standard Dual Lip Air Ring
28
Dual Lip
1577
6" GEC Dual Lip Air Ring Rotating Model 812
6
Dual Lip
1577
11" GEC Dual Lip Air Ring Rotating Model 824
11
Dual Lip
1577
25" Uniflo Dual Lip Air Ring Rotating
25
Dual Lip
1530
12" Polystems Dual Lip Air Ring
12
Dual Lip
2094
10" Polysystems Dual Lip Air Ring
10
Dual Lip
2094
8" Dual Lip Air Ring
8
Dual Lip
2094
20" GEC Dual Lip Air Ring with Iris
20
Dual Lip
2185
12" Brampton Dual Lip Air Ring 12.75 ID
12
Dual Lip
2185
24" Uniflo Dual Lip Air Ring 26" ID
24
Dual Lip
2185
24" Uniflo Dual Lip Air Ring 26" ID
24
Dual Lip
2185
16" Sano Dual Lip Air Ring 17.75' ID
16
Dual Lip
2816
18" GEC Dual Lip Air Ring Model 824
18
Dual Lip
2816
18" Western Dual Lip Air Ring
18
Dual Lip
2816
18" Western Dual Lip Air Ring
18
Dual Lip
3426
14" GEC Dual Lip Air Ring Model 824 with Iris
14
Dual Lip
1175-3
20" Dual Lip Air Ring, Uniflo Style
20
Dual Lip
SK
8" Dual Lip Air Ring Unflo Style
8
Dual Lip
SK
8" Alpha Marathon Dual Lip Air Ring
8
Dual Lip
SK
12" Western Dual Lip Air Ring
12

Air Cooling System

The air cooling system, air ring, is an integral part of any blown film line. It greatly affects not only the heat transfer from the molten polymer film but also the formation and stability of the bubble. For most blown film bubbles the shape is primarily determined by mechanical manipulations and aerodynamics. The importance of heat transfer in film blowing modeling, as bubble cooling ultimately affects both production rates and final film properties. Dual Lip and Single Lip air rings are available used here in this section, and new air rings can be quoted as well from our new machinery section or by contacting us. The air ring is a commonly overlooked component that will increase output and control film variations.