Biodegradable Plastic

Biodegradable Plastic

Only a couple of decades ago, biodegradable plastic was introduced to the world. Biodegradable plastics are plastics that will decompose in natural aerobic (composting) and anaerobic (landfill) environments. Biodegradation of plastics can be achieved by enabling microorganisms in the environment to metabolize the molecular structure of plastic films to produce an inert humus-like material that is less harmful to the environment. They may be composed of either bioplastics, which are plastics whose components are derived from renewable raw materials, or petroleum-based plastics which utilize an additive.

The lowering of the costs to manufacture plastic has as a result led to plastic being more widely available and as such has become an environmental issue. While today it is common place to see plastic bags everywhere as a means to transport an item from the store or restaurant, but only 20 years ago, one would rarely even see a store that offered plastic over paper.

The most common plastic seen anywhere in the world today is polyethylene. This type of plastic is what is utilized to make the grocery bags as well as many other items like water and cola bottles. The product of plastic itself is as a result of the refinement of petroleum products which are of course the root of the environmental issues we face today; the dependence on fossil fuels.

Along with polyethylene though, there are a number of other types of plastic that are also available. The plastics breaks down easier and of course do not have the toxic styrene by product that the polyethylene has. These other plastics are made from a variety of substances such as vegetable oils and starches. One big example is that of the cellophane plastic wrap which is made entirely from the pulp of wood.

As science and technology advance in to the next millennia, many more types will become available and some of those are already here. Many new types of plastic can now be readily and cheaply produced as well as the older manufacturing techniques of other plastics are being improved upon. Unfortunately, not one single type of plastic has shown the strength which can be obtained only in the polyethylene bags and as long as it remains on top as the strongest plastic bag, getting rid of it will be next to impossible.

Furthermore, as more developments unfold in the search for a polyethylene replacement, one thing is for certain that is that each and every single newly designed plastic too has its own list of environmental impact factors. Some say that we should just go back to paper, but unfortunately this cannot happen as there is not a sufficient amount of trees available for this to occur.

The goal within time is that eventually a true biodegradable plastic will be developed that is as strong or even stronger than that of polyethylene, and can break down easier without all of the toxic by-products. This would greatly reduce the amount of plastic waste consumed and disposed of into landfills.

Biodegradable Plastics .org is a new portal, displaying all the latest news, information and developments in the biodegradable plastic (bioplastics) industry. Visit us at biodegradable plastic portal. This article was written by John Harley, staff writer at Biodegradable products blog

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WVTR-Water Vapor Transmission Rate

WVTR-Water Vapor Transmission Rate

WVTR is the abbreviation for water vapor transmission rate, which is defined as the constant rate at which water vapor permeates through a specimen film at specified conditions of temperature and relative humidity.

WVTR is of great significance for package quality. With the Water vapor transmission rate testing, effective quality control of food, drug and electronic products, etc. can be guaranteed so as to improve the storage, transportation and shelf life results and prolong shelf life span of the products.

The WVTR measurement is applicable for barrier property evaluation of plastic films, laminated films, sheets, back sheets, high barrier materials, foils, OLED, water-proof membranes and bottles, pouches, jars, boxes made of plastic, rubber, paper, glass and metal, as well as medical devices, etc.

The testing principle of WVTR is as follows: Mount the preconditioned specimen between the testing cells, clamp tightly. Nitrogen with constant humidity flows through one side of specimen, dry nitrogen flows through another side of the specimen. Under the function of humidity difference/grades, water vapor passes through the specimen and enters the lower humid side, and is carried to the sensor by the dry nitrogen. The electrical signals are generated at the sensor when the water vapor enters. Calculate the water vapor transmission rate by analyzing the electrical signals. For package test, dry nitrogen flows in the package, humid nitrogen flows around the outer side of the package.

Labthink Instruments Co., Ltd., as the leading transmission testing instrument manufacturer, devotes to providing excellent WVTR testing instruments. Recently, Labthink introduces innovative Labthink PERME W3/330 Water Vapor Permeability Tester. This tester is of master base and satellite module mode, which can effectively test 30 kinds of specimen simultaneously. This instruments complies with ISO 15106-3, GB/T 21529, DIN 53122-2, YBB 00092003 and other international standards.

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.
Mark Won Secretary@labthink.cn
Tel: +86 (0)531 85864214-8058
Fax: +86 (0)531 85812140
www.labthink.cn

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What is Permeation?

What is Permeation?

Permeation is one of the indexes indicates the barrier properties in material field. In packaging material industry, permeation is used to state and evaluate the barrier property of packaging materials against water vapor, oxygen or other gases, etc.; that is, through the evaluation of water vapor transmission rate (WVTR) testing, oxygen transmission rate (OTR) and other gas transmission rate (GTR) testing of packaging materials, the basic guarantee for product quality and shelf-life period is confirmed. More questions for Permeation, please visit www.labthink.cn for answers.

WVTR is the abbreviation for water vapor transmission rate, which is defined as the constant rate at which water vapor permeates through a specimen film at specified conditions of temperature and relative humidity.

WVTR is of great significance for package quality. With the Water vapor transmission rate testing, effective quality control of food, drug and electronic products, etc. can be guaranteed so as to improve the storage, transportation and shelf life results and prolong shelf life span of the products.

The WVTR measurement is applicable for barrier property evaluation of plastic films, laminated films, sheets, back sheets, high barrier materials, foils, OLED, water-proof membranes and bottles, pouches, jars, boxes made of plastic, rubber, paper, glass and metal, as well as medical devices, etc.

Oxygen Transmission Rate (OTR) is one of the important indexes of Gas Transmission Rate (GTR) Testing. Oxygen Transmission Rate, OTR is defined as the constant rate at which oxygen permeates through a specimen film at specified conditions of temperature and relative humidity. Oxygen Transmission Rate is also of great significance for packaging material quality. Through the testing of oxygen transmission rate (OTR) measurement, a better evaluation and quality control of varied materials under vacuum and modified air status can be achieved, so as to confirm long term storage and shelf-life of packed contents. Besides, transmission rate of other gases can also be measured, such as organic vapor transmission rate testing. 

Labthink, as the leading instruments manufacturer and testing service provider, has the thorough capacity in permeation field. The PERME series permeation products has a complete line of water vapor transmission rate (WVTR) testing instruments and gas transmission rate (GTR) testing instruments.

About Labthink?

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.

 

Labthink Instruments Co., Ltd.

No. 144 Wuyingshan Road, Jinan 250031, China

Tracy Bao  info@labthink.cn

Tel: 0086 531 85061153  fax:0086 531 85812140

 

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.

Labthink is devoted to share excellent quality testing and control techniques with global clients and is known for wide coverage of international testing standards. Labthink participates in the drafting of several important standards of food, pharmaceutical and packaging industries, and is the excellent partner of national certification institutes.

Labthink has also established cooperation with IGT, Rycobel, Metrotec, Chilton, Moroka and other renowned distributors to provide attentive and prompt technical services for her customers in more than 40 countries and regions.

Labthink aims at creating satisfactory value and professional services for her customers.

Labthink, think for you only!

Labthink, the excellent provider of testing instruments and testing services, is devoted to provide most excellent and complete quality control solutions for pharmaceutical, foodstuff, cosmetics, packaging, printing, adhesive, automotive, petrochemistry, environment, biology, new energy, construction, aviation and electronic industries worldwide.

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    Postal bags

    Postal bags

    Postal Bags are an excellent low cost way to ship goods that already have good quality packaging or don’t require postal protection like clothes.

    Plastic bags usually use less material than cardboard boxes, cartons, or jars and are therefore often considered as reduced or minimized packaging. Depending on the construction, plastic bags can be well suited for plastic recycling and can be incinerated in appropriate facilities for waste-to-energy conversion.

    Bags can be made with a variety of plastic films. Polyethylene, of various grades and types, is the most common. Other forms, including laminates and coextrusions can be used when the physical properties are needed.

    Plastic recycling improves usage of resources. Biodegradable films need to be kept away from the usual recycling stream to prevent contaminating the polymers to be recycled. If disposed of in a sanitary landfill, most traditional plastics do not readily decompose. The sterile conditions of a sealed landfill also deter degradation of “biodegradable” polymers.

    Polyethylene is a polymer consisting of long chains of the monomer ethylene (IUPAC name ethene). The recommended scientific name polyethene is systematically derived from the scientific name of the monomer. In certain circumstances it is useful to use a structure–based nomenclature. In such cases IUPAC recommends poly(methylene). The difference is due to the opening up of the monomer’s double bond upon polymerisation. In the polymer industry the name is sometimes shortened to PE in a manner similar to that by which other polymers like polypropylene and polystyrene are shortened to PP and PS respectively. In the United Kingdom the polymer is commonly called polythene, although this is not recognised scientifically.

    Biodegradable postal bags are also available now like the Degradamailer, a biothene degradable postal bag. These films are made by blending an additive to provide a UV / oxidative and/or biological mechanism to degrade them. This typically takes 6 months to 2 years in a landfill site if adequate exposure to oxygen and heat over 140°F/60°C.

    Degradation is a two stage process. First the plastic is converted by reaction with oxygen (light, heat and/or stress) to molecular fragments that water can wet, and then these smaller oxidized molecules are biodegraded, i.e. converted into carbon dioxide, water and biomass by microorganisms.

    Kevin Thomas works for Davpack, a uk packaging supplier. Their friendly staff are waiting to help you choose the right packaging for your business.

    Text and content © Copyright of Davenport Paper Co. Ltd 2009

    Article from articlesbase.com

    To celebrate National Recycling Week (8th 14th November 09), Thiess Services in conjunction with Gosford City and Wyong Shire Councils, invited all Central Coast residents to be a part of our 2009 National Recycling Week Competition . The competition asked residents to design a creative, unique or humorous 30 second YouTube style video that encouraged Central Coast residents to recycle. Thiess Services Education Officer Michelle Murrell, said it was a tough choice for the judges to determine the winning entries We received 7 video entries from residents, all of them showing great creativity from our residents and providing some outstanding ideas that can be incorporated into the 1 Coast, 1 World, Dont Waste It! Waste Education Program. The winning entry, submitted by University student Renee Smith of Bateau Bay, has been turned into a professional TV Commercial by sponsor Treehouse Creative and broadcast on NBN Central Coast (sponsor) during National Recycling Week. Renee has also won 00 for her creative efforts plus a 5000L water tank donated by SULO Australia. Renees video, titled The Great Escape is all about keeping our recycling out of landfills. The video is innovative and uses a life like puppet of an aluminium can to reiterate the recycling message. Renees entry shows an aluminium can escaping from the Red Lid Bin into the Yellow Lid Bin and touches on an important recycling message for Central Coast residents. Approximately 20% of what we currently put in our
    Video Rating: 3 / 5

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    Mailing Bags

    Mailing Bags

    Mailing Bags are an excellent low cost way to ship goods that already have good quality packaging or don’t require postal protection like clothes.

    Plastic bags usually use less material than cardboard boxes, cartons, or jars and are therefore often considered as reduced or minimized packaging. Depending on the construction, plastic bags can be well suited for plastic recycling and can be incinerated in appropriate facilities for waste-to-energy conversion.

    Bags can be made with a variety of plastic films. Polyethylene, of various grades and types, is the most common. Other forms, including laminates and coextrusions can be used when the physical properties are needed.

    Plastic recycling improves usage of resources. Biodegradable films need to be kept away from the usual recycling stream to prevent contaminating the polymers to be recycled. If disposed of in a sanitary landfill, most traditional plastics do not readily decompose. The sterile conditions of a sealed landfill also deter degradation of “biodegradable” polymers.

    Polyethylene is a polymer consisting of long chains of the monomer ethylene (IUPAC name ethene). The recommended scientific name polyethene is systematically derived from the scientific name of the monomer. In certain circumstances it is useful to use a structure–based nomenclature. In such cases IUPAC recommends poly(methylene). The difference is due to the opening up of the monomer’s double bond upon polymerisation. In the polymer industry the name is sometimes shortened to PE in a manner similar to that by which other polymers like polypropylene and polystyrene are shortened to PP and PS respectively. In the United Kingdom the polymer is commonly called polythene, although this is not recognised scientifically.

    Biodegradable postal bags are also available now like the Degradamailer, a biothene degradable postal bag. These films are made by blending an additive to provide a UV / oxidative and/or biological mechanism to degrade them. This typically takes 6 months to 2 years in a landfill site if adequate exposure to oxygen and heat over 140°F/60°C.

    Degradation is a two stage process. First the plastic is converted by reaction with oxygen (light, heat and/or stress) to molecular fragments that water can wet, and then these smaller oxidized molecules are biodegraded, i.e. converted into carbon dioxide, water and biomass by microorganisms.

    Kevin Thomas works for Davpack, a uk packaging supplier. Their friendly staff are waiting to help you choose the right packaging for your business.

    Text and content © Copyright of Davenport Paper Co. Ltd 2009

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    Various Kinds of Packaging

    Various Kinds of Packaging

    Every product whether electronic, consumer good, furniture or other, needs packaging. Packing is done to protect the product as well as it is an excellent marketing scheme for selling.

    Basically there are protective, flexible and custom packaging. In protective one, great care is taken for the product, as generally it is either very expensive or fragile. So you will have to depend upon this for safe transportation of the product. Here weather, extremes of temperature along with other things are taken into account.

    Pouches, bags and wraps are considered under flexible packaging. It is very helpful in reducing waste. Owing to this and other reasons, flexible packaging industry has become very big in USA.

    Custom packaging is done as per the requirements of the customer. Client get this done on the basis of their marketing plan as well as kind of product. Actual creativity is shown in this type of packaging. This include attractive color, printing, labels, product related designing and more.

    Basic kinds of Packaging

    Film Packaging
    Many kinds of films are used for packing different products. Like blister film packaging is used in pharmaceutical, medical as well as for consumer good. It is a very tough packaging that not only protects the product inside but it also displays it clearly for buyer to purchase it. Then there are shrink wrap packaging in which the film holds the product tightly after heat it, anti fog films, anti static films, barrier films and so on. Polyvinyl chloride (PVC) films is the chief material used in these film. In addition to this polyethylene (PE), polypropylene (PP), polyolefin are also used extensively.

    Plastic Boxes
    Most of the grocery and dairy items are packed in different kinds of plastic boxes and plastic films. You will find curd, yogurt, juices etc in the smart plastic packaging. Also any item that needs to be transported is packed in plastic boxes.

    Thermocol Packaging
    Thermocol packaging is done for the consumer good such as electronics. TV, refrigerator, iron, washing machines are packed with thermocol in cardboard boxes as these protect these act as shock absorber.

    Textile Packaging
    Textile packaging is done for the automobiles during their transportation. Also the custom made packaging is done for this and it is really very effective from shock absorbing point of view. Generally textile inserts are used that are fit into metal containers.

    Foam Packaging
    Foam of varied thickness is used in the form of plain sheets as well as rolls for packing purposes. Goods are wrapped in foam packaging and these are also insert in the corner of the packed material. Sharp edges of the furniture is generally protected during travelling with foam packaging.

    Check out b2b marketplace for all kinds of packaging films and industry information.

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