food bags

FoodBags



where to buy about contact us recommended pkg. for food bags types of food bags news

About Us

food bagsWelcome to Discount Food Bags.Plastic packaging continues to have the wrap on consumer preference. Freshness, storage stability and ease of preparation are among the consumer goals driving the popularity of plastic food packaging.

We provide free and accurate information on types, sizes and gauges of food bags and other food service packaging. Learn everything you need about food bags or buy food bags at discounted prices from our recommended suppliers.

Food bags help keep our food fresh and safe, and protects against spoilage. Food packaging provides a hygienic and safe environment for foods and medicine by protecting against contamination while keeping foods fresh throughout use. Food bags allow packaging to perform many necessary tasks and provide properties including strength and stiffness, barrier to oxygen transmission and moisture, resistance to food component attack, and flexibility.

poly food bags ~ food packaging


What are Food bags?

A bag made from clear plastic to store food. Plastic food bags keep food fresh. Food bags are made mostly from ordinary polythene.

food waste bags ~ food bags


Recommended Packaging for Food Bags

RECOMMENDED PACKAGING
Product Package Requirement Recommended Film
Bakery Prevent Mold Saran
Spices Prevent migration of odor out of package

Saran

Dry Sausage Products Oxygen Barrier Nylon
Bologna, Franks Oxygen and Moisture Barrier Saran / Polyethylene
Cheese Oxygen and Moisture Barrier Saran / Polyethylene
Frozen or Smoked Fish Oxygen and Moisture Barrier Saran / Polyethylene
Fresh Meats Oxygen Barrier Nylon or Polyethylene
Frozen Meats Oxygen and Moisture Barrier Saran / Polyethylene

polythene food bags ~ food saver bags


How is plastic wrap made?

Background

Plastic wrap is a form of food packaging consisting of a thin film of flexible, transparent polymer that clings to itself and to food containers to form a tight seal. The plastic keeps the food fresh by protecting it from air and by preventing dry foods from absorbing moisture and wet foods from losing moisture. It also seals in odors to prevent them from spreading to other foods stored nearby.

Plastics are artificial polymers; that is, they consist of gigantic molecules formed by combining thousands of small molecules of the same kind into a long chain. These small molecules are known as monomers, and the process of combining them is known as polymerization. Natural polymers include such familiar substances as silk, rubber, and cotton.

The first plastic was made by the British chemist Alexander Parkes in 1862, who produced a substance he called Parkesine from cotton, nitric acid, sulfuric acid, castor oil, and camphor. Two years later in the United States John Wesley Hyatt improved this product and named it celluloid. Celluloid was a tremendous success and was used to make many different products, but it was highly flammable.

The first completely artificial polymer (unlike celluloid, which was a derivative of the natural polymer cellulose) was Bakelite, which was produced from phenol and formaldehyde by the Belgian chemist Leo Baekeland in 1908. Many other polymers were developed during the 20th century, including such important products as artificial rubber and artificial fibers such as nylon.

The first plastic used for wrapping was cellophane, another derivative of cellulose invented by the Swiss chemist Jacques Brandenberger in 1911. It had the advantage of being transparent, and was used for packaging as early as 1924. Cellophane was the most common form of plastic film made until 1963, when it was overtaken by polyethylene.

Polyethylene was discovered by accident by research workers at the British company Imperial Chemicals Industries in 1933, when they mixed benzene and ethylene at high temperature and pressure. Polyethylene was first used chiefly for electrical insulating material. It was first made into a film in 1945 by the Visking Corporation in the United States, and has grown in popularity ever since.

Polyvinyl chloride (PVC) was produced before World War II and was originally used as an inferior substitute for rubber, but films of this substance were not made in any quantity until the 1950s. PVC is used today in many different products such as pipes, flooring, electric cables, shoes, and clothing, as well as plastic wrap.

Polyvinylidene chloride (PVDC) film was developed by the Dow Chemical Company during World War II for military use. It offered a high degree of protection from moisture and resistance to oils, greases, and corrosive chemicals, so it was used to package sensitive equipment such as optical devices and aircraft engine components. In 1952 it was offered to the public under the familiar trade name Saran Wrap.

Raw Materials

Most household plastic wrap is made from polyethylene, PVC, or PVDC. These polymers are all derived from simple hydrocarbons such as methane or ethylene, which are produced from natural gas or petroleum. Polyethylene is made directly from ethylene. PVC is made from vinyl chloride, derived from ethylene, or from acetylene, derived from methane. PVDC is made from vinyl chloride and vinylidene chloride, a derivative of 1,1,2-trichloroethane, which in turn is derived from ethylene or acetylene.

Some plastic films, including cellophane, are derived from cellulose, which is obtained from wood pulp or from linters, tiny fibers that cling to cotton seeds after the longer cotton fibers have been removed by a cotton gin. At least one form of plastic film (Pliofilm, a trademark of Goodyear) is derived from rubber.

The Manufacturing Process

Quality Control

A variety of standard tests exist to ensure that plastic wrap is effective. The most important are tests for permeability, impact resistance, and tear strength.

Water vapor permeability is measured by filling a dish with calcium chloride, a highly water-absorbent substance. It is covered with a sample of plastic wrap and weighed. The dish is then placed in a chamber with a controlled temperature and humidity. After a measured amount of time the dish is weighed again. The increase in weight shows how much water vapor has passed through the plastic. This test can also be done by filling the dish with water instead of calcium chloride and measuring the decrease in weight to see how much water vapor has escaped. These tests are performed at 73'F (23'C) with a relative humidity of 50%, at 90'F (32'C) with a relative humidity of 50%, and at 100'F (38'C) with a relative humidity of 90%.

Gas permeability is measured by placing a sample of plastic wrap between two chambers. The upper chamber contains a pressure of 100 kilopascals, and the lower chamber contains a vacuum connected to a tube containing liquid mercury. As the air in the upper chamber passes through the plastic wrap it increases the pressure in the lower chamber and forces the level of mercury to drop. The change in the level reveals how much air has penetrated the plastic.

Impact resistance is measured by dropping weights of increasing size on test samples until half of them break, at which point the weight is recorded. It can also be measured by filling bags made from the plastic wrap that is being tested with sand and dropping them on a hard surface from increasing heights until they burst. The height at which this occurs is then recorded. Impact resistance is also measured by shooting a small steel ball propelled by pressurized air through a sheet of plastic wrap and measuring how much the plastic slows it down.

Tear strength consists of tear initiation strength (the force required to start a tear) and tear propagation strength (the force needed to continue a tear). To measure tear initiation strength a sample shaped like a shallow V is pulled between two jaws until it begins to tear. This unusual shape is selected to provide a 90 degree angle that provides a controlled starting point for the tear. Tear propagation strength is measured by pulling apart a sample containing a precut slit.

In general, PVDC is stronger and less permeable than polyethylene, which is less permeable than PVC.

Environmental Concerns

Since plastic wrap is difficult, if not impossible, to recycle and is rarely reused, it does contribute to waste. One consumer group, considering such factors as the energy and raw materials needed for manufacture, the wastes released during manufacturing and disposal, the ability to be recycled, and the typical amounts used, has rated plastic wrap as "Good." By comparison, reusable plastic containers were rated as "Excellent," plastic bags as "Very Good," aluminum foil and freezer bags as "Good," and freezer papers as "Poor." Another concern is the possibility that exposure to certain plasticizers in plastic wrap could be harmful. These chemicals are absorbed from plastic wrap into hot and fatty foods. Although they have never been shown to cause harm in humans, plasticizers have been proved to cause cancer when fed in large amounts to lab animals. PVC wrap can consist of as much as one-third plasticizers, PVDC wrap consists of about 10% plasticizers, and polyethylene wrap usually contains no plasticizers.

Reference:http://www.answers.com/topic/plastic-wrap?cat=technology
vacuum food bags ~ food packaging bags


Markets for Plastic bags in Food Industry

  1. Food service
  2. Poultry
  3. Fresh Red Meat
  4. Smoked and Processed Meats
  5. Produce
  6. Bakery
  7. Deli
  8. Grocery
  9. Restaurant & Catering
  10. Instituational
  11. Hotel Industry
  12. Fish & Seafood
  13. Retail packaging
biodegradable food bags ~ bags for food


Types of Popular Plastic Food Bags

  1. Side Gusset Bags: Low & Linear Low Density
  2. Gusset Bags are like a flat style bags with both sides or bottom tucked in to form gussets and used anywhere. These bags serve as the most adaptive and useful bags in all food service areas. They are excellent for use in preparing and presenting bakery products as well as being ideal for the everyday storage and transport of any food item. All bags are made from virgin resins and comply with FDA and USDA requirements for safe contact with food items. Our comprehensive line of Low Density, Linear Low Density and High Density bags gives you the selection options to meet your needs.

    A bag made from clear plastic to store food. Plastic food bags keep food fresh. Food bags are made mostly from ordinary polythene.

  3. Polypropylene Flat Reclosable (Seal Top) and Gusseted Bags
  4. Wide variety of polyprop bags specifically suits to the needs of the bakery industry. It's clear to see why polypropylene bags are an excellent way to package and present bakery products. The exceptional clarity combined with polypropylene's excellent vapor and moisture barrier makes it a natural choice for food packaging. Polypropylene bags have long been the choice for product presentation and preserving freshness by fine bakeries.

  5. Polypropylene Co-Extruded Bags
  6. Co-extruded bags ideal for freezer applications. These bags possess superior clarity in a material that is thinner and stronger than regular polypropylene. This added strength adds confidence that these bags are not easily torn by sharp-edged hard crusted breads etc

  7. Polypropylene Micro-Perf Crusty Bread Bags
  8. Crusty breads can stay crisp without losing freshness. Micro-Perf Crusty Bread Bags having micro perforations throughout the bag to let in just the right amount of air to keep the bread crusty. These clear polypropylene bags are also an ideal way to display bread. Customers can see clearly what they're buying without having to remove loaves from the bags. In addition to making a beautiful presentation, Micro-Perf Bags allow the aroma of fresh baked bread to fill the store.

    Micro-Perf Bags, crusty breads can be packaged quickly from the wicket dispenser and sealed with either heat or twist-ties.

  9. Bun Pan & Bun Pan Rack Covers
  10. Bun pan and rack covers for assortment of bun pan or rack covers. These covers are available in both low and high density materials and are case packed or on rolls.

  11. Sandwich Bags
  12. Popular sandwich bag selection gives a variety of size and closure configurations. Some have an interlocking 'Lip-Flip' closure to keep contents fresh and others have a reclosable seal top to make entry and retrieval easy. There are also perforated pre-opened bags on rolls for special application and easy sandwich packaging.

  13. Reclosable Bags Seal Top
  14. These low density polyethylene (LDPE) bags are a natural choice for food service because the zipper type closure makes these bags reclosable and perfect for items that need to be kept fresh and repackaged

  15. Reclosable Bags - Slide Seal
  16. Low density polyethylene (LDPE) Slide-Seal bags meet FDA requirements for food applications and are an excellent choice for storing and displaying all types of products. Perfect for items that need to be kept fresh or repackaged, even with gloved hands.

  17. Bags on Rolls
  18. Bags on Rolls are the ideal bag delivery system in many food service areas. Bags on Rolls are convenient in dispensing an individual bag at a manual packing workstation where the roll may be placed on a wall or other location to save table top space.

  19. Poly Nylon Vacuum Pouches
  20. These pouches are used in the vacuum packaging of meat, fish, poultry, cheese and other perishable food products. Our line of top-quality laminated poly nylon pouches provide the highest levels of clarity, strength and flexibility. These pouches are three-seal constructed offering excellent barrier properties for both oxygen and moisture vapor transmission, resulting in extended shelf life for a variety of food products. All pouches meet FDA and USDA requirements for food contact safety. Sizes are listed by outside dimension.

  21. Ice Bags & Ice Bucket Liners
  22. Metallocene Ice Bags are made from a production process that yields a special balance of ideal ice bag requirements. Beyond what is possible with Low or Linear Low Density polyethylene films, these bags excel in high impact strength, low haze/high gloss and clarity, and durability properties.

  23. Vest Style carrier bags/Merchandise Bags, & Counter Bags
  24. These bags designed for restaurant take-out and grocery food bagging. These bags are made from various thicknesses of high molecular weight, high density film that makes them stronger and more durable. They come ready to dispense in low cube dispenser cartons that are easy to use at the retail counter or store shelves. Some bags are available in seven colors to fit your particular requirement. The attractive printed Counter Bags are designed to be stable while sitting open on a counter or table. This allows for convenient packing and lowers the risk of spillage when carried or transported

food freezer bags ~ cellophane food bags uk


Where to Buy?

Search Results for "plastic food bags" - Found 1 UK Company:

  1. Plastic food bags - Polythene food bags
    Polybags Limited is UK based plastic food bags manufacturer and supplier; offers custom food bags, flat poly bags available in various sizes and styles. All bags made out of virgin material comply to EU & USA food contact standards....
    www.polybags.co.uk

food grade plastic bags ~ small food bags


Standards for Food Bags

Below are the list of the Standards for the 'Food bags' to be considered in food contact applications:

plastic food bags ~ food storage bag


Order Discounted Biodegradable bags here

If you looking for a quality biodegradable bags at cheap prices then please visit biodegradable bags for all your degradable, biodegradable and compostable bag needs...


cellophane bags for food ~ food safe bags


News

food carrier bags ~ polythene food bag


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