Clamshell Blog

In daily life, in each of our families, plastic bags, plastic food containers has become commonplace in full bloom; in an array on the shelves of the store, placed in plastic food packaging everywhere. We all know full bloom for food packaging and plastic should be non-toxic. But sometimes people do not attach importance to this issue, readily took a plastic bags used to hold food to realize that this is harmful to the body. Because some plastics, such as polychlorinated ashamed vinyl plastic is toxic. Although non-toxic PVC, plastic products, but in the process of accession to the plasticizer dibutyl phthalate and lead are all toxic DOTP; Add stabilizer is also mainly lead stearate toxicity. Easily precipitated lead salt together, there will be set once the store into the body effect, poisoning people a long time, so use plastic food packaging and in full bloom exclusive use of food bags, boxes, must not be misused.
The use of plastic food packaging to note the following:
1. PVC products with ethanol, ether and other solvents precipitate when exposed to lead salt, so in full bloom with this soft plastic food is not suitable;
2. If the use of PVC products in full bloom oily foods such as fried fritters, fried cake, fried fish, snacks and the like will cause the spread of lead in plastic food to go;
3. PVC products when the temperature at 105 ℃, it will dissolve toxic substances, if long-term use in more than 80 ℃ will slowly release HCl gas that has toxic effects on the human body.
Also Bakelite (Bakelite) containing free phenol and formaldehyde on human toxicity, so Bakelite products are not suitable for eating utensils and food packaging. Xinhua Yu (urea-formaldehyde plastic), although a room temperature non-toxic and tasteless, but at 100 ℃ boiling water bubbles or for holding vinegar, there will be precipitation of free formaldehyde on human health, and should not be used for food packaging or a. Other products such as waste plastic recycling extremely complex and difficult to guarantee its non-toxic should not be used for food packaging.
One day be used as food packaging, plastic is generally without plasticizer and antioxidant species, such as polyethylene, polypropylene, polystyrene, nylon, they are non-toxic. Such as the commonly used food bag is made of polyethylene plastic, another example, bottles, cups, sugar bowl, tray, ladle, and lunch boxes are also using non-toxic plastic.
In the commonly used plastic products in identifying whether or how toxic?
Identify many ways, such as the appearance of law, the proportion method, solvent, boiling water immersion, combustion method. More simple, accurate and feasible method is combustion, are presented below:
The samples were cut out a small section to clamp the clamp, in the light of the kerosene lamp on (also available without the alcohol lamp lit candles instead of) view of their ease of combustion from the case after the fire, the color of flame and smoke, burning such phenomena and the odor can be integrated sub-word is what kind of plastic.
PVC: not flammable, away from the fire Jimie, the color of flame and smoke to the bottom of the green tip of the yellow, white fume burning softens, have brushed off later phenomenon, hydrochloric acid gas to stimulate the taste.
Polyethylene plastic: flammable, away from the fire continued to burn after the flame and smoke blue top yellow bottom, continue to melt dripping during burning, burning paraffin wax with a similar issue of taste.
Polypropylene: flammable, burning up from the fire, the flame color of the top end blue yellow, burning continuously melt dripping when there oil flavor.
Polystyrene: flammable, away from the fire continued to burn after the flame and smoke Secheng orange, black smoke, it is obvious that black carbon fly to the end of the air, given the unique odor of styrene.
Bakelite: flame from the fire and then turns off the flame and smoke color yellow, expansion cracks when burning issue of wood burned and the smell of phenol.
Urea-formaldehyde plastics: flame, after the Jimie from fire, flame and smoke color yellow, tip pale blue, burning and swelling when there are cracks, issued a sharp taste of urea and formaldehyde.
Nylon plastic: the slow burn from the fire put out after the slow, yellow flame, burning under the drip when the constantly melting and foaming, have similar taste burnt wool.

After resin is a synthetic polymer. The plastic is a polymer material as the main, add (or without) other additives, to a certain temperature and pressure conditions to molding materials. Therefore, if a number of popular talk, that is, the scope of resin is plastic, plastic containing resin. However, resin and plastic are two concepts associated with each other.

Is a linear polymer chain to react the functional group under certain conditions by the AFL-CIO, or by the direct polymerization of monomer three-dimensional structure of the polymer. Polymer body is a “giant molecule” molecular size and molecular weight are not a limit, often a product is a huge volume of molecules. Therefore, the molecular weight it has lost its meaning. It can not be dispersed by the solvent molecules (but can be solvent swelling), heat can not flow, is insoluble compounds. Amorphous polymer body is always in the glassy state, very hard, brittle, usually not to show flexibility, heat does not soften, it does not work plasticizer, cold rolling and not to delay or molecular orientation. However, due to the formation of polymer shape is often carried out in stages, from a linear shape by the shape and the last, if the structure has not yet formed in the body to die before that, while heating, allow the reaction to complete the course in full bloom can be be hard products. General commonly referred to as thermosetting plastics, mostly polymer body.

Number of monomer units connected chain structure of polymers formed, called the linear polymer or a polymer chain. Such polymers can be swollen in the solvent and can dissolve. Thermal softening, and can flow. Most can melt without decomposition, can be repeatedly melted several times. Has good flexibility and plasticity. Most can be extended by cold or roll to increase their degree of molecular orientation. Most of the general linear thermoplastic polymer.

Large molecular weight polymer is a class of compounds by one or more simple compounds (usually referred to as monomers) the Exalted. They are the main ingredients in plastics, leading in all the components in the bonding role in determining the plastic is a thermosetting or thermoplastic, is the physical impact of plastics, chemical, and mechanical properties of the important factors. Their content in plastics is generally 30% to 90%. Not very strictly speaking, known as polymers, polymers and polymer is called homopolymer obtained by two or more monomers and polymers is called copolymer obtained.

The U.S. government is prepared to Indonesia, Vietnam and Taiwan imported plastic bags levy of up to 96% of the final tax.

According to the U.S. Department of Commerce to make the decision, in addition to Vietnam, Indonesia and Taiwan imports all the plastic bags levy a general tax, will be on 18 Vietnamese companies, two Indonesian companies and two Taiwan companies to pay a special tax with a punitive nature .

Among them, the tax rate applicable to Vietnamese enterprises to 69-85%, Taiwan 36% -96% business, 52-76% of Vietnamese enterprises.

U.S. bag makers applauding this decision, saying the move will effectively curb what they called violations of U.S. trade law and WTO rules “not a fair price,” plastic bags dumped imports in the United States.

Representative in the United States, South Carolina Hartsville of Hilex PolyCo.LL CinHartsville companies and is located in Houston Superbag Corp. The company to institute legal proceedings over the United States attorney JoeDorn plastic bag manufacturers, said in a statement: “The revenue measures help to restore fair competition in the U.S. market, then our business remain in the United States, factories and employees. ”

Vietnamese media quoted a government official as saying the Road, the U.S. ruling as unfair and U.S. government officials in Vietnam have to submit evidence to prove that Vietnamese enterprises in the export is not violation of WTO provisions.

Made at the end of March the U.S. government’s latest decision in the two companies announced the dumping of these profits and specific amount of subsidies. United States International Trade Commission is expected to make a final ruling on April 14.

The United States also said that Vietnam imported plastic bags subsidy ranges from 0.44% -52.56%. From the Washington law firm King & Spaulding Dorn said that this is the first time the U.S. government imposed countervailing duties on Vietnamese enterprises / countervailing duties.

According to U.S. government data showed ,2006-2008, the Vietnam’s plastic bags the largest growth rate of imports, from 17.4 million U.S. dollars in 2006 to 79.4 million U.S. dollars in 2008.
The same period, imports from Taiwan plastic 17.6 million U.S. dollars to 51.2 million U.S. dollars, Indonesia imports plastic bags to 23.5 million U.S. dollars from 37.7 million U.S. dollars.

If the United States International Trade Commission’s final ruling on April 14 to maintain the preliminary ruling, importers will over the next three countries to pay the import of plastic bags, cash bond, while imports of plastic bags in Vietnam needs to pay countervailing duty margin .

Imperial College London, the food marketing expert David Hughes recently by the Australian Packaging Council (Packaging Council of Australia) will be the packaging of the seminar organized by the packaging industry is facing the biggest challenge is too concerned about the cost savings, without attention to our clients value.

It DavidHughes introduction, this phenomenon is mainly due to packaging and packaging manufacturers customers most commercial relations rather than a partnership, so product development is often will give up simply as a lower packaging costs opportunities.

Point for Hughes, Gavin Williams, CEO of the Australian packaging members also expressed their own customers for the packaging and packaging business relationship issues.

Williams said: “Hughes said business professor is a commercial relationship with customers rather than the issue of partnership is right in this situation depends on packaging manufacturers to change, they not only have to actively track sales leads, but also passionate way to make friends with customers. ”

“Packaging companies should make efforts to change the packaging as the ordinary people to the idea of consumer goods, it is actually a value for our clients products and services.”

Hughes said in his speech, sustainable packaging is now a trend to reduce the carbon footprint means for enterprises to save money. He said: “This is a fact that an increasing number of shareholders would be interested in environmental issues, so packaging companies must go in front.”

Looking ahead, Hughes that the packaging companies will face a food label, the more stringent recovery requirements and carbon footprint and water footprint and other issues challenges. Private labeling and packaging standards will continue to improve, the market for simple and easy to read the label packaging demand will increase.

Earlier this year, Motorola indicated that it plans to release up to 20 handsets in 2010 running Google’s Android platform. Considering the sheer volume of Android-related leaks coming from the Motorola camp, it wasn’t kidding.

Add two more Motorola-made Android phones to the growing pile of devices the company is preparing to release in 2010. Most recently caught on camera? The Opus One and and Backflip. Both are interesting in their own way.

Opus One

What stands out most about this device is the fact that it will be Motorola’s first iDEN-based Android phone. That means it will work on Sprint Nextel’s iDEN network and offer features such as walkie-talkie calling. According to the Boy Genius, it will run Android 1.5 with iDEN service enhancement. As for the rest of the specs:

* 3.1″ HVGA 320×480 capacitative touchscreen display
* 3 megapixel autofocus camera with LED flash
* Accelerometer
* Proximity sensor
* Wi-Fi
* 802.11b/g
* Bluetooth
* microSD card slot
* 2.5mm headset jack
* Home, Menu, Back, Speaker buttons are capacitive buttons with haptic feedback
* iDEN PTT & PTX
* Android LBS which is integrated into the iDEN GPS engine
* “Enterprise email”
* Plastic-molded housing with some rubberized texture finishes
* 58mm in width, 118mm in length
* 100g weight
* 512MB Flash /
* 256MB of RAM
* 64k and 128k iDEN SIM card support
* A-GPS
* Motorola dual-mic technology noise-canceling for noisy enviroments
* Flash Lite v3.1.x
* Some of the preloaded apps include: corporate email client with ActiveSync support, MOTONAV navigation app, barcode scanner, and document viewer.

Backflip

This is one of the weirder phones I’ve seen, if the spy shots are to be believed. It is a sideways clamshell, but the QWERTY keyboard is placed on the back surface of the device. That’s just not something you see very much of. How Motorola will engineer it so that users don’t accidentally compose email dissertations while the thing is packed away in their pocket or purse is beyond me.

Other points suggest that this will be AT&T’s first Android device. “Known” specs are said to include Android 1.5, 256 MB memory, 528 Mhz processor, 5 megapixel camera with autofocus and flash, Wi-Fi, Bluetooth, GPS, and a 3.1” HVGA touchscreen.

This information was sorted out by Phandroid. The Backflip (also called the Motus and Enzo) will run Motoblur, which is Motorola’s social networking service.

Lenovo on Wednesday introduced a hybrid laptop that’s either a clamshell notebook or a multi-touch slate tablet, each with its own processor and operating system.

The two-in-one design makes the IdeaPad U1 unique and more mobile than a standard laptop. Lenovo plans to showcase the device along with a variety of other PCs at the International Consumer Electronics Show in Las Vegas.

The IdeaPad U1 has an 11.6-inch display and weighs 3.8 pounds. When the display is attached to the body of the laptop, the unit operates like a typical notebook running Microsoft Windows 7.

With a flip of a switch, however, the display detaches, and becomes a multi-touch tablet PC powered by an ARM processor and running a Linux-based operating system. The slate weighs 1.6 pounds.

The two devices share the same battery power and 3G mobile broadband technology and are designed to have all data and documents in sync. For example, a user can surf the Web in laptop mode, switch to tablet mode, and continue from the same point without interruption, according to Lenovo.

The tablet interface provides either landscape or portrait viewing, depending on the application in use. The screen can be divided into four or six sections, with each section running a separate application, such as email, a calendar, an RSS reader, a social networking Web site, video playback or document editing.

Lenovo said the system can support more than five hours of 3G Web browsing. The hybrid comes with an integrated video camera, stereo speakers and microphone.

The IdeaPad U1 is scheduled to be available June 1. The estimated retail price is $999.

On Tuesday Lenovo introduced the Skylight smartbook, a clamshell device with a keyboard and 10-inch display. The thin gadget weighs less than two pounds and has a customer interface for quick access to Internet services and browsing. It also refreshed its line of laptop PCs for mobile pros, adding ultra-portable notebooks and introduced a series of energy efficient machines.

People on the food industry products, particularly in the health food become increasingly demanding, manufacturers Chuliao research and development in the food industry, not less fill people in need and in many Gongneng Shang, manufacturers of clamshell packaging by modern be realized, Mibu product Zi Shen’s defects, reduce costs and enhance the core competitiveness of the products. Here are some “advanced” packaging, is gradually changing products, changing our lives.

Paper-based composite packaging

This is a composite of a flexible, mainly foil type liner bag, embedded type, liquid type, etc.. Paper-based composite package to solve the main problem is the seepage problem, because the oil molecules small reason. Packed like cooking oil in Japan developed a composite box, very successful. Composite paper structure PE / paper / PE / AL / PET / PE, paper-layer composite substrate made by aluminum 6. As the composite layer with aluminum foil, its performance is better than glass bottles and plastic bottles, is safe and portable, and beautifully printed, increase the added value and competitiveness of goods.

New Compound “paper”

Super-strength composite paper has been developed abroad. The paper white as snow, thin as cicada’s wings, soft like satin, is still intact after repeated folding, also known as soft glass, and low prices. This kind of “paper” is basalt and Latin America in 2000 ℃ high temperature into the fiber, impregnated with phenolic resin and the infiltration of powder made of clay films. Mainly due to rock material, so long-term storage will not become brittle, moldy, moth-eaten, and can dyer & printer color, use wider. In addition, air-laid paper, sterilization paper, deodorant, paper, anti-charged paper, paper, anti-electromagnetic interference, high-absorbing paper (ie stealth packaging materials) and so on.

Deodorant packaging

Since the development of supermarkets and fast food, the rise in recent years abroad and a popular new concept of HMR, HMR market soon. Packaging materials in order to prevent the smell (that smell and odor) effects developed deodorizing packaging. Deodorant now has more than 40 kinds of packaging materials, mainly consists of three types:

A generic type of chemical odor that can remove nitrogen and sulfur compounds and the Department of compounds plus ammonia, dimethylamine, trimethylamine, hydrogen sulfide and other odor or smell.

Class B is a physical type, mainly used to remove hydrogen sulfide, carboxylic acid, and the like odor or smell, which is characterized by high concentrations of hydrogen sulfide odor effect is good.

C-like material is mixed odor type. Mainly made of activated carbon deodorant, deodorant ability of low concentrations of these materials good characteristics.

Deodorant packaging films for food packaging can also play a deodorizing effect of preservation. General deodorant packaging used that each have a special smell or odor of food, and agricultural products, aquatic products packaging.

Antimicrobial packaging

Microorganisms food corruption, so antimicrobial packaging has become a hot topic. To this end, Japan has added a new type of packaging materials inorganic antibacterial agent, successfully developed a series of antimicrobial packaging material, it has antibacterial effects various pathogens. The main features of the packaging materials are as follows: anti-bacterial effects of long duration; as antibacterial agents are gas-based, so the contents of the package without any adverse effects; stability.

In the packaging process, the thermal stability of high concentration and stability, no adverse effects on the working environment. Antimicrobial packaging materials mainly sheet, absorbent sheets, packaging film, anti-bacterial and other types of packaging. Sheet is to mixing to polyolefins and other antimicrobial agents.

Resin from repression, absorbing sheet is used as base material made of super absorbent polymers, often with film type and coating type. Such as non-woven / paper / mixed with antibacterial agents absorbent resin / paper / cloth.

Is now the widely used antimicrobial packaging film, add in the polyolefin film made of antibacterial agents on the most common microorganisms such as E. coli, Staphylococcus aureus, bean Phytophthora, wearing hold bacillus, Aspergillus niger, etc. have antibacterial effects.

High barrier packaging

As we all know, aluminum packaging materials superior performance, but opaque, for the successful development of a class of barrier experts new material. It is a good barrier, and other performance equal to or better than the plastic composite material. This is called GT composite packaging material, is deposited on the surface of a plastic film thickness 10 ~ 100um inorganic (eg nano-silica or titanium oxide) films made. Such nano-coatings, stable performance, even after high-temperature sterilization, its gas barrier, moisture, transparency is still as ever.

In recent years, the United States developed thermal efficiency liquid crystal polymer film (TLCP), from a special dense fibrous polymer composed of long chains, good strength and toughness. 2um thick liquid crystal polymer gas barrier properties of EVOH is very thick and 25um, but the price is much lower than the latter.

Cold seal packaging

Packaging machinery to be simple and convenient, energy saving, increased speed and efficiency to meet the needs of modern high-volume packaging, the use of low-temperature sealing packaging material is a necessary condition for low temperature sealed packaging. The so-called low-temperature packaging materials, that is, the film coated with a layer of natural rubber as the main component of cold seal coating and does not require heat-sealing the packaging material can be. It has a series of characteristics: First, the contents on the packaging does not produce heat-affected, and therefore particularly suitable for the packaging of tired of hot items; second is difficult to seal the substrate can be used; Third, simplify packaging machinery, reduce costs, save energy ; Fourth, to achieve high-speed packaging; 5 is a good cold seal, even under the seal strength at -20 ℃ will not decrease.