--- title: Anatomy of a Multiwall Bag description: Paper multiwall bags are made up of several layers of paper products and used to package cement, pet food, granulated items such as sugar and many other products. image: https://www.oren-intl.com/hubfs/Untitled_design-1.png --- [![Contact Us](https://www.oren-intl.com/hs-fs/hubfs/NEWCONTACT-1.png?width=116&name=NEWCONTACT-1.png "Contact Us")](https://www.oren-intl.com/contact)[![Oren Blog](https://www.oren-intl.com/hs-fs/hub/166086/file-2227019119.png?width=116&name=file-2227019119.png "Oren Blog")](https://www.oren-intl.com/blog) [![oren-logo-4](https://www.oren-intl.com/hs-fs/hub/166086/file-2225710411.png)](https://www.oren-intl.com/) # PAPER CONVERTING BLOG ## [Anatomy of a Multiwall Bag](https://www.oren-intl.com/blog/bid/296162/Anatomy-of-a-Multiwall-Bag) Posted by [Alan NeSmith](https://www.oren-intl.com/blog/author/alan-nesmith) on Jun 25, 2013 7:30:00 AM - [Tweet](https://twitter.com/share) ![Untitled_design-1](https://www.oren-intl.com/hs-fs/hubfs/Untitled_design-1.png?width=275&name=Untitled_design-1.png)Multiwall paper bags are often used as shipping and storage containers for bulk materials. In many cases, design and production artists can create and adapt multiwall bags that work for your specific needs, from a utility approach that simply identifies your product, to the more difficult task of grabbing the consumer’s attention at the point of sale.  There are two basic designs of bags:  open mouth bags and valve bags, and variations thereof. **Open Mouth Bags** An open mouth bag is a tube of paper plies with the bottom end sealed. The bag is filled through the open mouth and then closed by stitching, adhesive, or tape. Characteristics: - Open bag - Re-opening devices may be applied so that product remains protected for a longer period of time by the end user - Typically bleached or natural paper - Varying weights - Optional coatings- for glossy effect or to improve frictional characteristics - Optional protective barriers/liner Common Uses: - Food - Pet Food, pet care - Animal feed, seed - Chemicals, pharmaceuticals - Minerals **Valve Bags** Valve bags have both ends closed (pasted) and are filled through a valve. Characteristics: - Closed bag - Designed for high speed filling through a valve on spout packers - Biggest benefit is top performance wherever high speed filling processes are used, as well as protection properties - Optional liners where moisture protection is needed - Bleached or natural paper Common Uses: - Cement bags - Building materials such as plaster and dry mortar - Food - Pet food - Animal feed, seeds - Chemicals, minerals - Detergents, granulates Multiwall bags are made up of at least several layers of paper products to include inner ply and a printed external layer.  Some have a polyethylene foil or polyethylene coated paper layer in between as a vapor/grease repellant protective barrier.  At Oren, we supply the “accessories” that go into making a multiwall bag. [Contact us](https://www.oren-intl.com/contact/) to find out more about Oren’s components for creating multiwall bags. Tags: [Paper Converting](https://www.oren-intl.com/blog/topic/paper-converting) ### Search Our Blog ### Posts by category - [Butcher Paper (67)](https://www.oren-intl.com/blog/topic/butcher-paper) - [Custom Paper Ideas (30)](https://www.oren-intl.com/blog/topic/custom-paper-ideas) - [Flexographic Printing (27)](https://www.oren-intl.com/blog/topic/flexographic-printing) - [Food Service Paper (98)](https://www.oren-intl.com/blog/topic/food-service-paper) - [Freezer Paper (14)](https://www.oren-intl.com/blog/topic/freezer-paper) - [Industry News & Tips (29)](https://www.oren-intl.com/blog/topic/industry-news-tips) - [Kraft Paper Uses (64)](https://www.oren-intl.com/blog/topic/kraft-paper-uses) - [Paper Converting (49)](https://www.oren-intl.com/blog/topic/paper-converting) ### Subscribe via E-mail ### Latest Posts © 2025 Oren International. All rights reserved.