Clamshell Blog

Plastics are synthetic or natural polymer resin as the main material. After adding various additives, to a certain temperature and pressure with a scalable, can be fixed after cooling the shape of a class of materials. Natural or synthetic polymer resin molecules in the molten state, and around the uniform distribution of additive molecules in a process called plastination, having already achieved this process has been called plastination, and has not yet reached, is considered not plasticized.
Plastics according to their own performance to hours can be divided into: You can repeatedly melt forming can maintain their identity and the underlying thermoplastic and can only carry out a fusion of the thermosetting plastic two broad categories. According to their purpose for the use of a wide range of points can be divided into low prices, better overall performance of General Plastics, such as PE, PP, PVC, PS, and amino plastics have good physical and mechanical strength, it may replace the metal used in construction machinery engineering plastics, such as: ABS, nylon, polyester, POM, TPX-1 and so on. As well as in a fine performance, particularly a class of engineering plastics, such as: sex with a particularly good resistance to radiation, temperature, etc. The specialty plastics, such as: poly aryl sulfone, liquid crystal polymers. Thermoplastic resin according to the size of molecular crystal points, can be divided into amorphous thermoplastic polymers and two types of crystalline polymers.
The main characteristics of plastics are: first, the density of small, high specific strength, get a higher yield of the packaging that “the quality of the packaging unit of volume or package size. Second, most of the plastics chemical resistance is good, there are Good acid and alkali resistance, various types of organic-Rong agents, long-term placement, oxidation does not occur. Third, forming easy to consume less power than required for forming steel and other metal materials. Fourth, with good transparency, easy coloring nature. Fifth, has good strength, unit weight of the intensity of high-performance, impact resistance, easy modification. Sixth, the low processing costs. Seventh, excellent insulation.

Cellphone designs that hide the screen when not in use have

traditionally been separated into two designs, the clamshell and the

slider. People have preferred the clamshell because they’re compact,

and others like the slider because they usually have large screens.

Like Pandas, Cellphone’s forced the two to mate for the good of the

species, and out popped the Sliding-Clamshell.

When you flip the phone open, the body becomes a track for the screen

to move up. There’s enough room for the standard keys plus an iPod like

click wheel. This design seems like it will make phones more compact,

but thicker. Is that a sliding-clamshell in your pocket or did you just

have genital enhancement surgery?

Ingredients: lettuce mosaic, Magnolia vegetables, red bell pepper, small tomatoes, purple cabbage, sugar pea, purple leaf lettuce, corn kernels, onion
Ingredients: salad dressing

Vegetable salad making steps:
1, lettuce Baicheng large mosaic on the Salad Box.
2, the Magnolia vegetables evenly spread out.
3, red peppers into a small circle and cut tomatoes.
4, plus amount of sugar pea and purple cabbage wire.
5, the purple leaf lettuce rolled up on the vegetables and sprinkle with onion rings and sweet corn kernels.
6, Add salad dressing, mix well.

Effects: lose weight, beauty, clear the brain kidney, regulating appetite

Plastic Molding Technology that plastic sheet (board) material hot molding process technology, plastic secondary processing industries as a technology. It differs from injection molding, extrusion and other primary processing technology, is not directed against plastic resin or particles heat molding or die-off with the cross-section with a continuous molding; nor is the use of machine tools, cutting tools and other mechanical processing means, a portion of the plastic materials cutting down, get the required shape, size, but against the plastic sheet (board) material, for heating, the use of molds, vacuum or pressure to make sheet (board) material deformation, up to the required shape and size, combined with supporting processes, to achieve application.

Plastic molding equipment, including clamping systems, heating systems, vacuum and compressed air systems, and mold and so on several parts.

Due to people’s food safety, shelf life extension, cost-effectiveness, environmental issues and consumer demand increased convenience, food packaging technology has also been fully developed, in order to improve the performance of packaging to meet people’s needs, active packaging technology should be transported and Health. antimicrobial food packaging technology is a kind of active packaging technology, which can effectively suppress the surface of micro-organisms of food to extend the shelf life of food to ensure food quality. This paper discusses the type of antimicrobial packaging technology and their application in food, Antimicrobial packaging systems as well as inorganic antibacterial agent, organic antibacterial agent and a natural antimicrobial agent summed up. Finally, the future development of antimicrobial packaging technology trends were described.

Definition bags

Bag is a bag used for packaging of various products, widely used in daily life and industrial production.

Classification bags
Press material is often divided into plastic clamshell bags, cloth bags, paper bags and so on.
By use of terms can be divided into food trays packaging bags, industrial bags and specialty bags.
According to environmental standards, can be divided into green bags and non-environmentally friendly bags.

The development of bag
The development of bags has gone through four distinct phases: the primitive stage of packing bags, big bags stage, the small packets of bagging stage and gradually into the current environmental (green) bags of the new stage. With the development of commodity economy, packaging of the commodity itself, more and more significant, it has become a kind of commodity production is no longer dependent on the particular product, a kind of all commodities can not be separated, and widely used products.

1. Plastic clamshell products produced fused marks of reasons:
1) due to melting the material solidified in the confluence of spearhead part of the cooling of the fused strip without causing marks.
2) due to volatile materials, the air still blocked
3) residual cavity with release agent.
2. Associated with knowledge:
1) using a gate, without the direction of the material from the confluence of the two products generally do not have fused marks, in addition, if the Want to avoid changing the gate can only be fused marks the location of so fused marks are not visible, or appear to occur in the location of eyesore.
2) mold on the pins (in the product on the hole) usually occurs fused marks.
3) has been closed due to air arising from the phenomenon of fused mark is very large, it is necessary to make the air completely escape.
4) it also uses this method: To generate fused marks in a place where the extra sheets in the product, and then then slice Cut off.
5) release agent over molten material Ershi float part of the advance party sent to the cavity, melting occurs certain knot mark.
3. Solution:
1)An instant: Improving injection speed, mold temperature increased to raise the temperature of barrel increase injection pressure.
2)short-term: the increase of gas escape slot.

When choosing foods, many consumers know to look at QS, but the paper packaging, containers have to go through QS certification but are not aware. From September 1,2009, the State Administration of Quality Supervision, Inspection and Quarantine to begin across the country investigated and dealt with without access to food paper packaging, food containers and other products production license the production, sale and use of such acts; same time, “food containers, packaging materials with the additive use of health standards “and” food containers, packaging materials used melamine – formaldehyde moldings and health standards, “” plastic disposable tableware General technical requirements “and a series of food packaging, containers have to implement the standard, these are for food safety plus of a lock.

Paper packaging, the container will be standardized

Teabag filter paper, loaded bread paper bags, fast-food restaurants food boxes in full bloom, the family used to entertain guests disposable cups … … can be seen everywhere in life food packaging paper products presence. According to AQSIQ announced in May this year, “About carrying out food paper packaging, containers and other products production license investigative work without a license notice” be provided from September 1 onwards, paper cups, paper tableware and other food paper packaging, the container must have a QS logo can be in the market.

It is understood that from the beginning in June 2007, AQSIQ has cups, paper tableware, food wrapping paper, etc. there are 21 kinds of national standards and industry standards in food production licensing system for the implementation of paper products. Included in the directory includes not only the consumers commonly used paper bags, paper cans, paper cups, paper tableware, paper boxes, etc., but also paper bowl instant noodles, burgers, sandwiches and other cooked food classes wrapping paper, candy, preserved fruits, medicine balls, of wrapping paper, tea cake, wrapping paper, tea bag of wrapping paper, apples, bananas and other fruit, food packaging paper wrapping paper, etc., are all in the management of the scope of QS.

Dong Lion disclosed that the national standard “one-off cups hygiene standards” have been developed and are currently being National Standardization Management Committee for review.

A number of standard plastic tableware gatekeeper

Light, beautiful, strong and durable plastic tableware, once in winning consumers, especially parents of all ages, however, caused uproar this year, melamine tableware, people generally feel worried about the safety of plastic tableware. “Children are used in small plastic bottles, plastic bowls, and even the spoons are plastic, and now I threw them all.” Consumers Ms Lau told reporters, for fear of glass, ceramic tableware, after breaking injury to the children, she gave the child the use of plastic products, can be seen after the relevant reports have been regretted.
This reporter learned that, since September 1, the “food containers, packaging materials used melamine – formaldehyde moldings and health standards” into effect. The new standard not only provides raw melamine – formaldehyde resin in the recommended conditions, should be the release of substances harmful to health, and any other additives should be added to meet the requirements. Detection of physical and chemical indicators of health, but also increased the amount of melamine monomer migration determination of carcinogens formaldehyde limit value of an older standard for doubled. In addition, the new identification requirements, the more explicit requirements for labeling products materials, and to inform the “food with” and “non-heating in a microwave oven use” packaging requirements should be clearly marked “food with” and indicate the manufacturer , product names, conditions of use, material type and so on.

“Plastic disposable tableware General technical requirements” will also come into effect on December 1,2009, the standard disposable tableware on the scope of a clear definition of: disposable tableware is expected to dining or similar purposes, including a one-time use The lunch boxes, plates, dishes, knives, forks, spoons, chopsticks, bowls, cups, cans, pots, straw, etc., but also includes a one-time child care outside the lining tableware, but does not include meals without the expected purpose or similar purposes food packaging materials, such as fresh food trays, yogurt cups, jelly cups and so on. Meanwhile, the technical requirements for such products, testing methods, inspection rules and product identification, packaging, transportation, storage requirements are carried out detailed provisions.

Ink used will also be restricted

Can the fries fell on the food tray pad of paper, which has aroused people’s concern, but to do so, what specific hazards, people do not fully understand. August 1, 2009 come into operation on the “composite packaging with plastic film, bags of dry compound, extrusion compound” will replace “boiling-resistant composite films, bags” and “bi-oriented polypropylene film / low-density polyethylene composite film , bags. ” The new standard will be solvent residue from the original target ≤ 10 mg per square meter was revised to ≤ 5 mg
per square meter, of which benzene solvent residue from the original ≤ 3 mg per square meter per square meter was revised to “0.01 mg ( that is, not detected). This food packaging printing ink standards put forward higher requirements for basic and related standards in developed countries converge on the health of consumers will be more secure.

The most basic material for the forming web is PVC or Polyvinyl Chloride. The principal advantages of PVC are the low cost and the ease of thermoforming. The main disadvantages are the poor barrier against moisture ingress and oxygen ingress; moreover PVC has a negative environmental connotation due to its chlorine content. In the case of blister packaging the PVC sheet does not contain any plasticizer and is sometimes referred to as Rigid PVC or RPVC. In the absence of plasticizers, PVC blisters offer structural rigidity and physical protection for the pharmaceutical dosage form. On the other hand, the blister cavity must remain accessible by the push-through effect and the formed web may not be too hard to collapse when pressed upon; for this reason the PVC sheet thickness is typically chosen between 200µ to 300µ depending on the cavity size and shape. Most PVC sheets for pharmaceutical blisters are 250µ or 0.250 mm in thickness. Typical values for the Water Vapor Transmission Rate (WVTR or MVTR) of a 250µ PVC film are around 3.0 g/m2/day measured at 38°C/90%RH and the Oxygen Transmission Rate (OTR) is around 20 cc/m2/day. In order to overcome the lack of barrier properties of PVC film, it can be coated with PVDC or laminated to PCTFE or COC to increase the protective properties. Multi-layer blister films based on PVC are often used for pharmaceutical blister packaging, whereby the PVC serves as the thermoformable backbone of the structure. Also, the PVC layer can be colored with pigments and/or UV filters. The European Pharmacopoeia (EP) references the requirements for PVC blister packs for pharmaceutical primary packaging in the monograph EP 3.1.11 “MATERIALS BASED ON NON-PLASTICISED POLY(VINYL CHLORIDE) FOR CONTAINERS FOR DRY DOSAGE FORMS FOR ORAL ADMINISTRATION”. In order to be suitable for pharmaceutical blister packs, the PVC formulation also needs to comply with the US Pharmacopoeia <661>; EU food legislation; US 21.CFR and Japanese food contact requirements.
Our products :Tri fold clamshell,Hardware Packaging & more is made by PVC