Short Description

BULK-FLOW’s belted semi-barless moisture barrier HDPE film liner, provides maximum product protection and minimizes cost in a single design. It is ideal for fine powders leaked to prone in regular liners.

Optimized for safety, product protection and contamination prevention, these liners are ideal for transporting petrochemicals, specialty chemicals, pharmaceuticals, flours and other sensitive products that require a pristine environment.


ApplicationFor moisture-sensitive products and powder grades
MaterialLDPE extruded film liner
Bars Required3 bars


  • Superior strength and safety
  • Maximum product containment for fine powders
  • Ideal for sensitive chemicals and other similar products
  • Contamination prevention
  • Ultimate protection for products
  • Guaranteed access to discharge port
  • Eliminates the need for 2 to 3 steel bars


Detailed Description

STRENGTH AND SAFETY – Unlike traditional film liners that are composed of mono-layer film, our liners are composed of co-extruded film formulated to yield the highest strength and puncture resistance of any liner on the market. In fact, our liners are able to stretch up to 880 percent before breaking. This impressive elongation capability provides a significant advantage over woven liners, which are able to stretch only 15 to 30 percent before breaking.

SUPERIOR CONSTRUCTION – BULK-FLOW’s belted barless moisture barrier film liners feature a seamless, tubular construction. The lack of seams eliminates the chances of product contamination with loose threads, as well as the possibility for leakage. Our liners are also composed of virgin resin materials for additional protection from contamination.

ULTIMATE PRODUCT PROTECTION – Our HDPE film liners’ proprietary formulation minimizes the transmission of water vapors in order to protect the liners’ contents from moisture damage. In fact, our HDPE Film Liners are six to eight times more impermeable than woven liners and three to four times more impermeable to humidity than other film liner designs.

ACCESSIBLE DISCHARGE PORT – Blocked discharged ports can be disastrous for a product’s recipient. Our HDPE Film Liners feature a top steel bar with low-elongation hanging belts designed to hold the bulkhead in place so that the discharge port is always exposed and accessible to receivers.

BARLESS – Our belted barless moisture barrier HDPE film liners feature a built-in bracing system consisting of numerous restraining belts. These belts brace the bulkhead and prevent bulging of the liner’s contents, eliminating the need for two to three steel bars that would be required for a traditional liner. This model also includes a portable easy-to-install discharge frame for superior safety during discharge.


  • Belted barless (patented)
  • 20'
  • 40'
  • 40' HC
  • 53'
  • Custom
  • HDPE film
  • Pneumatic lance
  • Belt conveyor
  • Reverse tilting
  • Belt thrower
  • Screw conveyor
Unloading by Tilting
  • Receiving rotary air valve + positive pneumatic
  • Gravity dump
  • Suction lance + positive pressure
  • Receiving bin + take-away pneumatic pipe
  • Receiving bin + take-away belt/screw conveyor
Ideal for Shipping
  • Dry flowable bulk solid or packaged solid
  • Agriculture
  • Chemicals
  • Minerals
  • High
Food Grade
  • Yes