Plastic recycling breakthrough could reduce landfill numbers

March 11th, 2010

Plastic could be recycled continually without any waste, after a breakthrough was made by scientists.

 

The material weakens so much on recycling that after its original use for packaging or containers, it is often sent to landfill.

 

Researchers from Stanford University and IBM used ‘organic catalysts’ to break down polyethylene terephthalate plastic to its building blocks, while maintaining its original strength – allowing it to be recycled once again as bottles and containers.

 

According to lead researcher Chandrasekhar Narayan, the discovery has already led to new projects which could result in recyclable plastics being on the market within the next two years.

 

The innovation could have a substantial impact on the UK government’s recently-announced targets for reducing the five million tonnes of household packaging waste created in the UK annually.

 

Several household names committed to the government’s second phase of a long-term plan to reduce packaging waste – potentially saving eight million tonnes from landfill by 2020.

Indoor shoe covers

March 11th, 2010

Shoe Covers are a practical, inexpensive, unique, and professional solution to one of the most common problems facing realtors, homeowners and other professional tradesmen every day.

Smart homeowners and top housing agents around the country are using our disposable shoe covers instead of asking visitors to remove their shoes before entering their newly listed or remodeled home. Parents with small children appreciate them to help keep floors free of bacteria and germs. 

Real Estate Agents, Appraisers and Tradesmen are using these shoe covers to give themselves a professional edge over the competition by minimizing their liability while taking care of their customer’s home. Give your customers peace of mind with quality, skid-resistant shoe covers. These shoe covers are inexpensive enough to be disposable but tough enough to be reusable.

 

These extra large, seamless, heavy duty shoe covers are manufactured of high quality diamond latex and are excellent for indoor or outdoor use by Appraisers and Gardeners to help keep shoes clean and dry.

They are waterproof, reusable and available in blue or white. Other applications include: medical, dental, cleanroom, critical environment, food handling/production, industrial manufacturing and construction

we are offering shoe cover making machines,if you are interested,please  contact :simon@odemade.com

Plastics Recycling in 4 Simple Steps

February 28th, 2010

Stop! Before you throw away that empty plastic bottle, think about recycling it. 

When it comes to embracing environmentally friendly technologies, recycling may not be as exciting as solar panels or hybrid cars, but it’s one area where consumers can make a huge difference.

Since the early days of recycling back in the 1970s, the nation’s recycling infrastructure has grown considerably.  Surveys suggest that, today, approximately 80 percent of Americans have access to a local recycling program1, be it residential curbside collection or a community drop-off center. 

Through these programs, specific types of post-consumer plastics are collected, processed for recycling, and used to create an array of second-generation products – everything from fleece jackets and bottles for beverages and detergents to carpeting and even high-end composite lumber for outdoor decking2.

Message in a Bottle
Take bottles. The number of bottles collected in the United States has increased every year since plastic bottle recycling was first calculated in 1990. In 2005, that number jumped to over 2.1 billion pounds of post-consumer plastic bottles, and the overall plastic bottle recycling rate climbed to 24.3 percent.  While this is all good news, it’s clear that there’s a tremendous opportunity to recycle even more – namely, the remaining 75.7 percent of plastic bottles used in this country annually.

Consider this: In most areas, the demand for recycled plastics exceeds (sometimes far exceeds) the available supply.  The message to consumers, especially those of us with access to community recycling, is that we can all work a little harder to make sure that our bottles and other recyclable plastics make it into the recycling bin when we’re finished using them.

The following tips can help make it easier to maximize the plastics you recycle:

  1. Learn what items and materials are accepted for recycling in your community.

    On the one hand, all major types of plastics (#1 through #7) are recyclable, meaning that technologies to recycle these materials have been developed and are in use in some areas.  Community recycling programs often collect plastic bottles made from PET (#1) and HDPE (#2), which, together represent approximately 96 percent of all plastic bottles produced in the United States.  Although a growing number of communities have started to collect other types of plastic containers, such as tubs, trays, lids, buckets and so on, opportunities to recycle plastics vary widely.  The only way to know what materials are accepted in your area is to check with your local recycling or solid waste facility.

    How to check: One way to get started is to search the Web.  Using your favorite search engine, enter the name of your municipality (usually a county, city or township) and the word “recycling.”  Many municipalities list the types of materials they do and don’t accept on their websites, and some provide the names of locations of where residents can drop off specific items for reuse or recycling. Even if this information isn’t available on your municipality’s website, you should be able to locate a phone number so you can call and ask.

  2. Recycle often and recycle right.

    In other words, once you know the rules, follow them.  There are two keys to making any recycling system functionally and economically viable:  (1) a continuous and dependable supply of incoming material, and (2) the ability to control the quality of the materials being recycled.  Consumers are absolutely essential to making both parts work.

    In addition to making sure that plastic recyclables end up in the recycling bin, consumers can help keep out potential contaminants.  Mixing the wrong types of materials (even other types of plastics) with recyclable plastics can lower the quality of recycled material.  This is why it’s so important to learn which types of plastics are – and are not – recycled in your area, and to sort things accordingly.

  3. Deposit bottles in the bin – not the trash.

    A “bottle” is a container that has a neck or an opening that is smaller than the base3.  Plastic bottles are among the most readily recycled plastics, but there’s still a lot we can do to recycle more of them.  Here’s the problem:  Lightweight, shatterproof plastic beverage bottles are ideal to take on the go – to work, to school, to the gym, on errands, and just about anywhere.  But because more beverages are being consumed away from home, a smaller percentage of empty beverage bottles are making it into our recycling bins. 

    One remedy:  Place the cap back on and temporarily store the empty bottle in your briefcase or backpack or simply leave it in your car until you get home. This will prevent any residual liquid from leaking out until you can properly recycle the bottle. 

    Below is a list of suggested “dos and don’ts” to help you maximize the bottles you recycle while avoiding mistakes that can contaminate the material collected.

Domestic PP, PE offers for February announced to Malaysia

February 6th, 2010

Players in Malaysia report that domestic producers have announced their February PP and PE offers to the local market with further increases from the late January offer levels. Higher production costs along with limited availability were cited as the main reasons supporting producers’ price hikes. Producers’ new prices have not yet met with acceptance on the converters’ side, with many buyers electing to delay their purchases for now in hopes of obtaining more attractive prices after the Chinese New Year holidays.

In the PP market, initial February offers were reported with increases of MYR210/ton ($62/ton) for homo-PP injection and raffia, MYR310/ton ($91/ton) for PP film and at MYR410/ton ($120/ton) for copolymer PP when compared with the late January offer levels. Offers for domestic PP are currently being reported at MYR4740-4810/ton ($1390-1410/ton) for homo-PP injection and raffia, MYR4980-5010/ton ($1460-1469/ton) for PP film and at MYR5160/ton ($1513/ton) for PP block copolymer, all on an FD Malaysia, cash equivalent basis.

In the PE market, initial February offers were reported with increases of MYR400/ton ($117/ton) for LDPE film, MYR150/ton ($44/ton) for LLDPE film and MYR100/ton ($29/ton) for HDPE film when compared with the late January offer levels. Offers for domestic cargoes are currently being reported at MYR5600-5640/ton ($1642-1654/ton) for LDPE film, MYR5220/ton ($1531/ton) for LLDPE film and at MYR4730-4860/ton ($1387-1425/ton) for HDPE film, all on an FD Malaysia, cash equivalent basis.

Limited local supply prompts greater PP, PE buying interest in Indonesia

February 6th, 2010

In Indonesia, persistent supply tightness in the country’s local PP and PE markets has encouraged converters in the local market to pick up the pace of their purchases out of fears that tightening supply could force sellers to seek further price hikes over the near term. In addition to concerns about further price hikes, converters commented that they are also looking to build up some buffer stocks in case domestic materials become even harder to locate over the near term.

A distributor reported that they sold out their stocks of domestic PP and PE this week at prices equal to the new producer price level for both products, with the distributor claiming to have concluded deals at $1400/ton for homo-PP injection, $1440/ton for PP film, $1430/ton for HDPE film and $1480/ton for LLDPE film, all on an FD Indonesia, cash basis. The distributor attributed the rise in buying interest to converters’ concerns about being able to locate sufficient amounts of prompt material.

When compared with the end of December, the producer price level in Indonesia has posted cumulative increases of $80/ton for homo-PP, $60-70/ton for LLDPE film and $40-70/ton for HDPE film.

N95 respirator and surgical mask are similarly protective against influenza

January 27th, 2010

Clinical question How effective is the surgical mask compared to the N95 respirator in protecting health care workers against influenza?

Bottom line Laboratory-confirmed influenza occurred with similar incidence among nurses wearing a fit-tested N95 respirator compared with a standard surgical mask when caring for patients with febrile respiratory illness. Given the increased expense and greater discomfort with use of the N95 respirator compared with the surgical mask, this information should be very helpful for the coming influenza season. (Level of evidence = 1b)

Synopsis Real world evidence comparing different respiratory protective devices is sparse. These investigators randomized (concealed allocation assignment) 446 nurses working full time in emergency departments, medical units, and pediatric units from eight medical centers in Canada to either a fit-tested N95 respirator or surgical mask when providing care within one meter of patients with febrile respiratory illness. The primary outcome measured was laboratory-confirmed influenza. Personnel conducting confirmatory testing for influenza illness remained blind to intervention group assignments. Study subjects wore gloves and gowns when caring for patients with suspected infection. About 30% in each group received influenza vaccine during the study year. Complete follow-up occurred for more than 90% of participants. Using intention-to-treat analysis, laboratory-confirmed influenza occurred with similar incidence in both the surgical mask and N95 respirator group (23.6% vs 22.9%, respectively). In addition, there was a nonsignificant trend for an increased incidence of the specific pandemic H1N1 swine influenza strain in the N95 respirator group compared with the surgical mask group (11.9% vs 8.0%). Using per-protocol analysis with only data from subjects with complete follow-up there was still no significant difference in influenza illness between the two intervention groups. The study was 80% powered to detect a 10% risk reduction with the N95 respirator.

Loeb M, Dafoe N, Mahony J, et al. Surgical mask vs N95 respirator for preventing influenza among health care workers: a randomized trial. JAMA. 2009;302(17):1865-1871. doi:10.1001/jama.2009.1466. Published October 1, 2009. 

Plastic Bottle Recycling Facts

January 25th, 2010

Plastic bottles can be recycled into: rugs, swimming goggles, dog bowls, back packs, skateboard wheels, and ski jackets.

 

- Plastic bottles are very fashionable: about five plastic bottles produce enough fiber filling for a ski coat, 25 recycled bottles can make a fleece coat, and it takes 26 bottles to make a polyester suit.

 

- It takes 14, 20-ounce PET bottles to produce one Extra Large T-shirt.

 

- Amazing Recycled melts plastic and whips it in an electric mixer, making a foam. The foam is spun into fibers. They take the fibers, mix it with cotton and make white T-shirts that are 50% cotton/50% water bottles.

 

- Made from recycled plastic, the nails and screws in plastic lumber hold better than wood for at least 50 years.

 

- A one liter water bottle can be recycled and manufactured as a ruler.

 

- The filling for one sleeping bag could be made from 85 20-ounce water bottles.

Recycling of different plastics

January 14th, 2010

The confusion over what we can and cannot recycle continues to confound consumers. Plastics are especially troublesome, as different types of plastic require different processing to be reformulated and re-used as raw material. Some municipalities accept all types of plastic for recycling, while others only accept jugs, containers and bottles with certain numbers stamped on their bottoms.

Recycling by the Numbers
The symbol code we’re familiar with—a single digit ranging from 1 to 7 and surrounded by a triangle of arrows—was designed by The Society of the Plastics Industry (SPI) in 1988 to allow consumers and recyclers to differentiate types of plastics while providing a uniform coding system for manufacturers.

The numbers, which 39 U.S. states now require to be molded or imprinted on all eight-ounce to five-gallon containers that can accept the half-inch minimum-size symbol, identify the type of plastic. According to the American Plastics Council, an industry trade group, the symbols also help recyclers do their jobs more effectively.

Easy Plastics to Recycle
The easiest and most common plastics to recycle are made of polyethylene terephthalate (PETE) and are assigned the number 1. Examples include soda and water bottles, medicine containers, and many other common consumer product containers. Once it has been processed by a recycling facility, PETE can become fiberfill for winter coats, sleeping bags and life jackets. It can also be used to make bean bags, rope, car bumpers, tennis ball felt, combs, cassette tapes, sails for boats, furniture and, of course, other plastic bottlesPET bottle recycling.

Number 2 is reserved for high-density polyethylene plastics. These include heavier containers that hold laundry detergents and bleaches as well as milk, shampoo and motor oil. Plastic labeled with the number 2 is often recycled into toys, piping, plastic lumber and rope. Like plastic designated number 1, it is widely accepted at recycling centers.

Plastics Less Commonly Recycled
Polyvinyl chloride, commonly used in plastic pipes, shower curtains, medical tubing, vinyl dashboards, and even some baby bottle nipples, gets number 3. Like numbers 4 (wrapping films, grocery and sandwich bags, and other containers made of low-density polyethylene) and 5 (polypropylene containers used in Tupperware, among other products), few municipal recycling centers will accept it due to its very low rate of recyclability.

Another Useful Plastic to Recycle
Number 6 goes on polystyrene (Styrofoam) items such as coffee cups, disposable cutlery, meat trays, packing “peanuts” and insulation. It is widely accepted because it can be reprocessed into many items, including cassette tapes and rigid foam insulation.

Hardest Plastics to Recycle
Last, but far from least, are items crafted from various combinations of the aforementioned plastics or from unique plastic formulations not commonly used. Usually imprinted with a number 7 or nothing at all, these plastics are the most difficult to recycle and, as such, are seldom collected or recycled. More ambitious consumers can feel free to return such items to the product manufacturers to avoid contributing to the local waste stream, and instead put the burden on the makers to recycle or dispose of the items properly.

GOT AN ENVIRONMENTAL QUESTION? Send it to: EarthTalk, c/o E/The Environmental

Seven Misconceptions about Plastic and Plastic Recycling

January 4th, 2010

Plastic Recycling

Misconception # 1: Plastics that go into a curbside recycling bin get recycled. Not necessarily. Collecting plastic containers at curbside fosters the belief that, like aluminum and glass, the recovered material is converted into new containers. In fact, none of the recovered plastic containers from Berkeley are being made into containers again but into new secondary products such as textiles, parking lot bumpers, or plastic lumber – all unrecyclable products. This does not reduce the use of virgin materials in plastic packaging. “Recycled” in this case merely means “collected,” not reprocessed or converted into useful products.

Misconception # 2: Curbside collection will reduce the amount of plastic landfilled. Not necessarily. If establishing collection makes plastic packages seem more environmentally friendly, people may feel comfortable buying more. Curbside plastic collection programs, intended to reduce municipal plastic waste, might backfire if total use rises faster than collection. Since only a fraction of certain types of plastic could realistically be captured by a curbside program, the net impact of initiating curbside collection could be an increase in the amount of plastic landfilled. The Berkeley pilot program showed no reduction of plastic being sent to the landfill in the areas where the curbside collection was in operation. Furthermore, since most plastic reprocessing leads to secondary products that are not themselves recycled, this material is only temporarily diverted from landfills.

Misconception # 3: A chasing arrows symbol means a plastic container is recyclable. The arrows are meaningless. Every plastic container is marked with the chasing arrows symbol. The only information in the symbol is the number inside the arrows, which indicates the general class of resin used to make the container. The attorneys general of 11 states objected to false and misleading claims about plastic recyclability. The recent settlement that they reached with the American Plastics Council paves the way for a first-ever definition of what claims can or cannot be made about plastic recycling and recyclability.

Misconception # 4: Packaging resins are made from petroleum refineries’ waste. Plastic resins are made from non-renewable natural resources that could be used for a variety of other applications or conserved. Most packaging plastics are made from the same natural gas used in homes to heat water and cook.

Misconception # 5: Plastics recyclers pay to promote plastics’ recyclability. No; virgin resin producers pay for the bulk of these ads. Most such ads are placed by virgin plastic manufacturers whose goal is to promote plastic sales. These advertisements are aimed at removing or diminishing virgin plastic’s greatest challenge to market expansion: negative public conception of plastic as unrecyclable, environmentally harmful, and a major component of wastes that must be landfilled or burned.

Misconception # 6: Using plastic containers conserves energy. When the equation includes the energy used to synthesize the plastic resin, making plastic containers uses as much energy as making glass containers from virgin materials, and much more than making glass containers from recycled materials. Using refillables is the most energy conservative.

Misconception # 7: Our choice is limited to recycling or wasting. Source reduction is preferable for many types of plastic and isn’t difficult. Opportunities include using refillable containers, buying in bulk, buying things that don’t need much packaging, and buying things in recyclable and recycled packages

Plastic packaging has economic, health, and environmental costs and benefits. While offering advantages such as flexibility and light weight, it creates problems including: consumption of fossil resources; pollution; high energy use in manufacturing; accumulation of wasted plastic in the environment; and migration of polymers and additives into foods.

Plastic container producers do not use any recycled plastic in their packaging. Recycled content laws could reduce the use of virgin resin for packaging. Unfortunately, the virgin&endash;plastics industry has resisted such cooperation by strongly opposing recycled -content legislation, and has defeated or weakened consumer efforts to institute stronger laws. Plastic manufacturers recently decided that they will not add post consumer materials to their resins used in the USA.

There is a likelihood that establishing plastics collection might increase consumption by making plastic appear more ecologically friendly both to consumers and retailers. Collecting plastics at curbside could legitimize the production and marketing of packaging made from virgin plastic. Studies of garbage truck loads during the recent plastic pick-up pilot program showed no reduction of “recyclable” plastic containers being thrown away in the pilot areas (in fact, there was a slight increase). Due in part to increased plastic use, glass container plants around the country have been closing, including Anchor Glass Container Corporation in Antioch, putting 300 people out of work

Plastic recycling costs much and does little to achieve recycling goals. Our cost/benefit analysis for implementing curbside plastics collection in Berkeley shows that curbside collection of discarded plastics: involves expensive processing; has limited benefits in reducing environmental impacts; and has limited benefits in diverting resources from waste.

Processing used plastics often costs more than virgin plastic. As plastic producers increase production and reduce prices on virgin plastics, the markets for used plastic are diminishing. PET recyclers cannot compete with the virgin resin flooding the market.

Increasing the capture rates of glass, paper or yard debris in Berkeley could divert more resources from landfills than collecting plastics at curbside. The “recyclable” plastic to be collected in Berkeley at most would only amount to 0.3% of the waste stream.

Five Strategies to Reduce the Environmental Impact of Plastics

1. Reduce the use
Source reduction Retailers and consumers can select products that use little or no packaging. Select packaging materials that are recycled into new packaging - such as glass and paper. If people refuse plastic as a packaging material, the industry will decrease production for that purpose, and the associated problems such as energy use, pollution, and adverse health effects will diminish.

2. Reuse containers
Since refillable plastic containers can be reused about 25 times, container reuse can lead to a substantial reduction in the demand for disposable plastic, and reduced use of materials and energy, with the consequent reduced environmental impacts. Container designers will take into account the fate of the container beyond the point of sale and consider the service the container provides. “Design for service” differs sharply from “design for disposal”.

3. Require producers to take back resins
Get plastic manufacturers directly involved with plastic disposal and closing the material loop, which can stimulate them to consider the product’s life cycle from cradle to grave. Make reprocessing easier by limiting the number of container types and shapes, using only one type of resin in each container, making collapsible containers, eliminating pigments, using water-dispersible adhesives for labels, and phasing out associated metals such as aluminum seals. Container and resin makers can help develop the reprocessing infrastructure by taking back plastic from consumers.

4. Legislatively require recycled content
Requiring that all containers be composed of a percentage of post-consumer material reduces the amount of virgin material consumed.

5. Standardize labeling and inform the public
The chasing arrows symbol on plastics is an example of an ambiguous and misleading label. Significantly different standardized labels for “recycled,” “recyclable,” and “made of plastic type X” must be developed.

China’s import controls affecting price of plastic

December 25th, 2009
Industry experts are predicting the price of plastics may fall this month due to varying issues including China’s import controls.Over the past month the duty on imports into China has increased. Container prices have also risen sharply, roughly doubling charges compared to four months ago.

Additionally, it is felt that more stringent checking of imports into China from Hong Kong is restricting materials entering the country therefore weakening plastic bottle prices.

A UK recycler said: “China’s export orders are down by 25 per cent and its factories are not very active at the moment, so it is still trying to recover from the recession.

“China is only willing to take high grade material and plastic reprocessors in China will only buy it at a price which is low enough for them to make a margin. Because they have very low overheads, it is easy for them to stop taking it and just shut down.”

According to Chinese law, plastic bottles can only be directly exported to the country if they are sorted and shredded first. Whole plastic bottles can be shipped from the UK to Hong Kong but are prohibited from entering China as whole plastic bottles. Buyers in Hong Kong should cut up the bottles ready for exporting to China however, sometimes whole plastic bottles still find their way in. It seems as port officials step up their checks on containers they may be finding the whole bottles and holding up material.

Another industry insider said : “It is a bit of a cyclical pattern. China stopped taking material for a while before Christmas and then the prices jumped up again. The point is if material is being held up, the price will drop a bit although we’re not experiencing too much of that at the moment. If any material price does decline it is most likely to be mixed bottles.

“With the recent fire at a UK plastic recycling plant, this could also mean more material is on the market, which will further push prices a bit lower.”

An additional UK recycler said: “It is very difficult to get a shipping container because there are such little exports and imports happening. However container prices are likely to come back down once the economy recovers.

“It seems like China is also keeping an eye on material quality because one of the common problems in the Far East is the amount of plastic carrier bags. Although they are a perfectly good grade of plastic to recycle, due to typical contamination inside them, such as receipts, they have reduced plastic bag production significantly, affecting the demand for plastic.

Plastic bottles are still being accepted in Hong Kong but they are paying less to UK exporters which is forcing prices down.”

However, domestic demand and rising oil prices appear to have pushed up the price of plastic in the short-term.