700 Type Low Pressure Port Air Ring

Core Functions
1. Low pressure, steady airflow — delivers a gentler, more controlled air output suited to smaller-diameter film bubbles that don't need high-force cooling
2. Even air distribution around the ring opening — spreads airflow around the film bubble as it rises, which helps avoid the localized thin spots that come from uneven cooling
3. Dual side-port air feed — air enters through two ports on the housing, feeding the internal chamber before it's released around the ring opening
4. Compact, low-profile housing — a smaller footprint that fits more easily into tighter spaces around the die head area on smaller machines
5. Cast aluminum construction — holds its shape under continuous operating heat and airflow, keeping the 700 Type Low Pressure Port Air Ring stable over long production runs

Specific Applications
1. Blown film bubble cooling on smaller lines — fits machines running at the 700 output level, where a lower-pressure, steadier airflow is enough to set the film properly
2. Thinner-gauge film production — lower pressure airflow suits thinner films that can be disturbed by overly forceful cooling
3. Entry-level and mid-scale production setups — a fit for plants running smaller-diameter die heads or lower output volumes rather than high-speed, high-output lines
4. Single-layer film production — well suited to straightforward single-material film runs where a simpler air ring structure is enough
5. Replacement or upgrade on existing smaller machines — since it's built to custom dimensions, it also fits plants swapping out a worn or mismatched air ring on equipment already in production

Purchasing Motivation

Buyers looking for a 700 Type Low Pressure Port Air Ring are typically running smaller or mid-scale blown film lines and need a cooling ring sized and pressured correctly for that output level — using an oversized, high-pressure ring on a smaller line can actually cause problems, since too much airflow force can distort a thinner or narrower film bubble instead of cooling it evenly.

This ring's lower-pressure design matches the airflow needs of smaller-diameter bubbles without overdoing it, and its more compact structure fits machines where space around the die head is limited. Since it's built to custom, non-standard specifications rather than a single fixed size, buyers can order one matched to their exact die head diameter and machine layout instead of adapting a generic part.

FAQ

Q1: What's the difference between this and a high-pressure air ring?
This is a low-pressure design built for smaller output lines and narrower film bubbles, where a gentler, steadier airflow is enough. High-pressure rings are built for larger, higher-output lines that need stronger airflow to cool wider bubbles fast enough.

Q2: What size lines is the 700 Type Low Pressure Port Air Ring suited for?
It's built for the 700 output range, generally fitting smaller or mid-scale blown film machines rather than high-output production lines.

Q3: How does air get into the ring?
Through two side ports on the housing, which feed the internal chamber before air is released evenly around the ring opening.