{"id":4121,"date":"2026-04-17T10:09:08","date_gmt":"2026-04-17T03:09:08","guid":{"rendered":"https:\/\/cokhitienphat.com\/?p=4121"},"modified":"2026-04-17T10:09:12","modified_gmt":"2026-04-17T03:09:12","slug":"the-role-and-functions-of-inner-tube-lining-in-expander-machines","status":"publish","type":"post","link":"https:\/\/cokhitienphat.com\/en\/2026\/04\/17\/the-role-and-functions-of-inner-tube-lining-in-expander-machines\/","title":{"rendered":"The Role and Functions of Inner Tube Lining in Expander Machines"},"content":{"rendered":"\n

In the feed processing industry, expander machines play a vital role in enhancing the nutritional quality and digestibility of animal feed. Among the critical mechanical components of these machines, the Inner Tube Lining (also referred to as a liner or sleeve) is indispensable.<\/p>\n\n\n\n

The following are the primary technical functions of Inner Tube Lining in animal feed expander systems:<\/p>\n\n\n\n

Main Housing Protection and Wear Resistance<\/h2>\n\n\n\n

The inner tube lining acts as a protective layer for the main housing (barrel) of the machine. During operation, the friction between the raw materials, the screw, and the barrel is immense.<\/p>\n\n\n\n

\"\u1ed0ng<\/a>
\u1ed0ng L\u00f3t & V\u1ecf M\u00e1y L\u00e0m Ch\u00edn (Inner Tube Lining & Barrel)<\/figcaption><\/figure>\n\n\n\n

Instead of allowing direct wear on the main barrel, the lining absorbs the abrasive impact. It is significantly more cost-effective and efficient to replace a worn lining than to repair or replace the entire barrel assembly.<\/p>\n\n\n\n

\"\u1ed0ng<\/a>
\u1ed0ng L\u00f3t M\u00e1y L\u00e0m Ch\u00edn (Inner Tube Lining)<\/figcaption><\/figure>\n\n\n\n

Creating HTST Reaction Environment<\/h2>\n\n\n\n

The inner tube lining, in conjunction with the screws, forms a sealed compression chamber where the HTST (High Temperature – Short Time) process occurs. This configuration ensures thermal retention and maintains a stable operating pressure ranging from 40 to 120 bar.<\/p>\n\n\n\n

\"\u1ed0ng<\/a>
\u1ed0ng L\u00f3t M\u00e1y L\u00e0m Ch\u00edn (Inner Tube Lining)<\/figcaption><\/figure>\n\n\n\n

The internal temperature within the lining bore can rapidly escalate to 90 – 140\u00b0C in just a few seconds. This facilitates instantaneous cooking of the raw materials while preserving heat-sensitive vitamins.<\/p>\n\n\n\n

Optimization of Nutritional Value and Starch Gelatinization<\/h2>\n\n\n\n