Clamshell Blog

As the synthetic material has superior performance, which was large in the field of packaging applications. The biggest advantages of plastic packaging materials, is easily adjusted through a variety of methods of material properties to meet various needs; also be made of composite thin films and multilayer plastic bottles, light weight, unbreakable, easy to transport and carry. Transparent plastic packaging materials, clean, smooth, easy printing and decoration style may beautify the appearance of goods, improve merchandise display performance.

    Most plastics can be used in beverage and food packaging, which is the largest amount of low-cost polyolefins. Commonly used plastic types are: polyethylene, polyvinyl chloride, polypropylene, polyester, polyvinylidene chloride, and polycarbonate.

    Polyethylene (PE)

    Polyethylene is the world’s largest output of synthetic resin, is the largest consumption of plastic packaging materials, about 30% of plastic packaging materials.

    Low density polyethylene (LDPE) better transparency, flexibility, elongation rate and large, impact resistance and low temperature resistance than HDPE as excellent, in all kinds of packaging consumption is still large, but as a food packaging material of its obvious shortcomings.

    High-density polyethylene (HDPE) with high crystallinity, allowing a higher temperature, its hardness, air tightness, mechanical degree of chemical resistance are better, it made extensive use of blow molding bottles and other hollow container. Because of its high resistance to mineral oils, widely used to contain milk, milk products, packaged natural fruit juice and jam like the food. However, Paul Hong HDPE, poor food and drink should not be loaded for long. However, it can be used with good sealing performance characteristics as the inner layer of composite film materials. Such as two-story, three composite materials, has a large number of used beverage packaging, the United States using cellophane / adhesive / PE compound containing lemon juice bottle special.

    Polyvinyl chloride (PVC)

    PVC plastic can be divided into hardware products, software products and three types of paste products. Hardware products generally less than 5% of plasticizer, the soft products in up to 20% or more plasticizers.

    Rigid PVC with plasticizer for free or very little, the finished product without plasticizer the smell, and excellent mechanical strength, light weight, chemical stability, so containers made of PVC is widely used in beverage packaging. Using injection stretch blow bottle production of the PVC seamless line, sidewall thickness and can be used to contain carbonated drinks such as Coca Cola and so on.

    PVC material has been the safety of people’s concern. PVC resin used in packaging of vinyl chloride content of not higher than 1 × 10-6, 1 kg of PVC resin that is only allowed with 1 mg of vinyl chloride monomer and PVC resin production in this bottle to drink, in food testing no vinyl chloride monomer.

    Polypropylene (PP)

    High crystalline polypropylene film structure, permeability to polyethylene 1 / 4 to 1 / 2, transparent, smooth, high processing performance, widely used to prepare the fibers, molding products, mainly plastic film.

    Currently, with the air tightness and thermal co-coating of polypropylene film and other film, cellophane, paper, aluminum foil composite mass production of composite materials are used PP composite materials can be used for beverage packaging containers.

    Various types of PP have a common characteristic of static electricity, to solve this problem, usually in thin film coating anti-static agent or the anti-static agent mixing in the film. Tightness in the film coating good PVDC resins can improve the oxidation resistance of PP polyester (PET or PETP)

    PET is a good crystal, colorless and transparent, extremely tough materials. Glass appearance, odorless, tasteless, non-toxic, flammable, burning yellow flame with blue edges, good air tightness.

    PET expansion coefficient, low mold shrinkage, only 0.2%, is one-tenth of polyolefins, PVC and nylon relatively small, it is dimensionally stable products. Mechanical strength are the most, the expansion degree of similarity with the aluminum film strength 9 times for the polyethylene, polycarbonate and nylon 3 times the impact strength of the film is generally 3 to 5 times. While the film there are moisture and protect Hong properties.

Although PET has the advantage, but the more expensive film, sealing problems, static electricity easily, so rarely used alone, mostly with the seal of the common good of the resin coating made of composite films.

    Two axis extends PET bottle blow molding method, can give full play to the characteristics of PET, which has good transparency, high gloss surface, showing glassy appearance, is the most suitable plastic instead of glass bottles.

    PET bottle production has developed rapidly in recent years, heat-resistant PET bottles are widely used in tea drinks, juice drinks, canned drinks need heat.

    Polyvinylidene chloride (PVDC)

    PVDC is characterized by soft and breathable with a very low permeability performance, prevent odor by, fresh aroma and good performance, suitable for long-term preservation of food; acid, alkali, chemicals, and excellent resistance to oil, has a good shrink nature, suitable for sealing packaging, shrink packaging material is good.

    PVDC drawback is too soft, poor operating performance; crystalline strong, easy to crack perforation, poor resistance to aging; the monomer is also toxic, it is mainly used for coating materials or manufacturing of composite materials.

    PVDC often associated with paper, aluminum foil and other plastic film made of composite material or PVDC coating material. Obtained by solvent viscosity legitimate good combination. These composite materials have excellent moisture and oxygen barrier, sealing performance, but also easy to heat sealing, water suitable for packaging food.

    Polycarbonate (PC)

    PC is a colorless, transparent, bright and clean and plastic. As the PC non-toxic, no odor, prevent the ultraviolet through the performance and the performance is good aroma and moisture, temperature and a wide range of non-brittle fracture under the -180 ℃, 130 ℃ environment in the long-term use, it is an ideal food packaging materials.

    Using PC good impact resistance, easy molding characteristics, can be manufactured into bottles, cans and various forms of containers for packaging beverages, wine, milk and other liquid substances.

    PC biggest drawback is the stress cracking. In addition to use in production of high purity raw materials, strict control of various processing conditions, the use of internal stress of the resin modification, such as the small amount of polyolefin, nylon, polyester and other melt blending, can significantly improve the resistance to stress cracking resistance, water resistance .

“01″ – PET (polyethylene terephthalate)

Mineral water bottles, soda bottles are made with this material. Dong Lion that can not be recycled beverage bottles mounted hot water, heat the material to 70 ℃, only suitable for the warm drink or cold drink, put hot liquids or heat distortion is easy, there are harmful substances leaching. Also, scientists found that the plastic products in 10 months, may release carcinogenic, toxic to the human body. Therefore, the beverage bottles used up on the lost, not to be used as a cup, or in containers used for storage of other goods, so as not to cause more harm than good health.

“02″ – HDPE (High Density Polyethylene)

Retains cleaning supplies, bath products, plastic containers, currently used in supermarkets and shopping malls are mostly plastic bags made of such material, resistant to high temperature 110 ℃, indicating the use of plastic bags of food can be used to dress food. Retains cleaning supplies, bath products, plastic containers can be reused after careful cleaning, but these containers are usually not good cleaning, the original cleaning residue into a hotbed of bacteria, cleaning is not complete, it is best not to recycle.

“03″ – PVC (polyvinyl chloride)

According to reports, this material is easy to produce plastic products of toxic and harmful substances from the two sides, namely the production process has not been completely single-molecule polymer of vinyl chloride, and second, the harmful plasticizers. These two substances when in the face of high temperatures and grease easily precipitate a poison with the food into the human body, are carcinogenic. At present, this material has less container used for packaging food. If used, do not let it heat.

“04″ – LDPE (low density polyethylene )…. Road fans Note: We used the water bottle is generally below that of this material and material, O

Plastic wrap, plastic film is such a material. Heat resistance is not strong, usually qualified PE cling film when the temperature exceeds 110 ℃ melting phenomenon occurs, the body can not break down will leave some plastic agents. And, wrapped with plastic wrap heating food, food in the oil is easy to wrap up the harmful substances dissolved. Therefore, the food into the microwave oven, first remove the wrapped plastic wrap.

“05″ – PP (polypropylene)

Microwave meal boxes made of using this material, resistant 130 ℃ temperature, transparency is poor, this is the only place in microwave plastic box, in care can be reused after cleaning. Need special attention, some microwave lunch box, box with 05 PP production, but the lid has to 06 PS (polystyrene)) manufacturing, PS transparency and good, but not high temperature, it is not with the box body 1 and microwave oven. For insurance purposes, the container in a microwave oven before, first remove the lid.

“06″ – PS (polystyrene)

This is a bowl of instant noodles for the manufacture of boxes, foam fast food box material. Then heat it cold, but not into the microwave oven, the temperature is too high to avoid the release of chemicals. And can not be used to contain acid (such as orange juice), strong alkaline substances, as well the human body will decompose polystyrene. Therefore, you should try to avoid using hot snack food packaging.

“07″ – PC and other types of

PC was a material widely used, particularly for the manufacture of multi-bottle, space cup, as with bisphenol A and controversial. Experts pointed out that, in theory, as long as the PC in the production process, bisphenol A hundred percent into a plastic structure, would mean that products not bisphenol A, let alone release. But, if a small amount of bisphenol A into a PC without the plastic structure, which may be released into food or beverages. Therefore, use this plastic containers to be exceptionally careful.

PC residual bisphenol A, the higher the temperature, the release of the more, the faster the speed. Therefore, should not PC bottle containing hot water. If your water bottle number is 07, the following method can reduce the risk: Do not use heat, do not in direct sunlight. Not dishwasher, washing machine water bottle drying bowl. Before first use, wash with baking soda in warm water, drying naturally at room temperature. If there is any break or damage the container, it is recommended to stop using, because the plastic surface if there are subtle grooves, are susceptible to bacteria. Avoid the repeated use of the aging plastic utensils.

Plastic recycling symbol is a triangle, usually in the bottom of plastic containers. 1 to 7 inside a triangle number, each number represents different materials, so recycling symbol in different figures indicates that the product is made from resin which, if the product is made of several different materials, then label is the main product, the basic material. The signs from the United States, including my now been accepted and cited in many countries. In China, plastic products labeled recycling symbol is optional, a number of large brands formal order to facilitate the recycling of plastic products, have recently started recycling label symbol.

A wide range of plastic packaging bags, specification uncertainty, therefore, the design and production staff tend to ignore the bag method, the result is that, although beautifully designed draft, but the system was finished package is incompatible everyone, even become waste. Experience tells us that only in understanding the common types of packaging products, based on the design ideas in order to maximize its potential to eliminate the design process does not meet bag works to design practical, the perfect product packaging.

Plastic Bag by bag method can be divided into triangular sealing the bottom sealing, three-dimensional letters and on-chip material in Class 4.

Trilateral sealed bag in the packaging around the seal, is, back sizes are finished sizes, have a certain sense of unity, design unfettered, and before and after the designs have a certain consistency. As the positive, on the back of the same size, can first design the front, so that the back with a positive echo. Plate hours, back to arrange a version of the same drum.

Sealing the end of the sealing in the back of the positive dimensions of finished size, the back is divided into two equal parts, and its width is equal to the width of the front, usually the design is positive, the back started to carry out integrated design, and the left and right The Canadian 1cm Edge, is back and is also a version of the same drum.

Three-dimensional letters are the letters in the end, based on the three-dimensional on both sides plus side, is back, side 3 face the same version in the same set of rollers.

Film material due to restrictions on printed material, its positive and negative must be separately designed, separate plate, can not simultaneously appear in the version of the same set of rollers.

     Shopping bags, paper, or plastic? When every time we go to the supermarket shopping, perhaps we would ask ourselves this question. Paper bags and plastic bags because of the environmental impact of their advantages and disadvantages, and even some environmentalists are also puzzled by this simple choice. Experts say the raw material paper timber, plastic bags, raw materials are crude oil. Americans spend each year for the production of shopping bags, manufacturers need to run out 14 million trees, or 12 million barrels of oil. Air pollution caused by production of paper bags, 70 percent higher than the production of plastic bags.

        However, plastic bags, once produced it is difficult natural degradation, they can exist for centuries, even millennia. Because of cheaper production costs of plastic bags, the U.S. Food and grocery stores usually select them. But San Francisco is limiting consumers to use plastic bags. Starting in April of this year, the city will only allow the use of renewable bio-degradable plastic bags or paper bags. Biodegradable plastic bags in a few months rather than several hundred years ago decomposition. Whether paper or plastic bags, environmentalists advocate is the same: to be recycling to use them. They further pointed out that the best option, of course, the use of a bag, and always bring their own bags.

Plastic packaging products are widely used in daily classes, electronics, chemical category, food products imported high quality raw materials using the membrane PVC, PE, PET, CPP, non-woven fabrics (not woven), zippers, ribbon, etc.. Production of composite, elevator bag, luxury bedding packing bag, high permeability PE and PVC handbag, canvas bag non-woven bags (environmental non-woven bags) and bags, suit cover series packaging products. Fundamentally to ensure the quality of the product packaging.

China Machinery Industry Federation is expected, from 2011 to 2015, China’s food and packaging machinery industry output value is expected to exceed 6,000 billion yuan, an annual average growth rate of approximately maintained at 16% level. However, China packaging machinery for over-reliance on foreign high-end technology has been seriously constrained China’s packaging industry sustained and stable development.

It is reported that China’s packaging industry behind the rapid development of a large number of complete sets of equipment with high technological content still rely on imports, a year in foreign exchange for imports of complete sets of high-end equipment. If a two-way stretch plastic film equipment, a production line near 100 million yuan,from the age of 70 introduced into the last century, so far, have import of such domestic production line 110. In addition, there are a large number of dairy industry, use of aseptic packaging boxes, filling equipment, packaging machines almost all for foreign companies.

Compared with foreign countries, China’s machinery manufacturing is mainly reflected in the gap between the level of technology. Such as high-pressure sterilization and other cutting-edge technology in the world, we are no one to develop this cutting-edge technology development requires both knowledge of the investment also need equipment, investment, enterprises are unwilling to invest, research institutes and no power, the long run, will be China and

the international advanced level will make the gap between the larger and larger. So called for the domestic packaging machine manufacturers can look to the future, take the road of Chinese-made packaging machine. Spark (Zhengzhou) Packaging machinery is working with the domestic packaging machinery manufacturers to jointly develop domestic and industrialization of packaging production line system. To revitalize national industry to make its own ontribution.

To face the future development trend of food packaging machines, domestic enterprises should be based on technological innovation, increase the intensity of independent innovation; step by step implementation of the “big strong small specialized” production and business model, the formation of “difference” competition in the market system; attention to green packaging, eliminate pollution and attach importance to environmental protection.

Recently, a mineral water bottle recycling can be carcinogenic Posts in major websites, forums widespread, but also triggered a public re-use beverage bottles issues. “Shenzhen Special Zone” investigation by the reporter was informed that many plastic beverage bottom of the bottle marked with a triangle formed by three arrows, internal standard 1 to 7 different figures. In fact, these figures represent the production of beverage bottles of different materials. Different materials in the recycling of plastic bottles are dramatic differences in the use of inappropriate may be hazardous to health.

Cited concern about the safety of mineral water bottles

My daughter drinks bottled water is available every day to school. Today, on-line reading cancer-causing mineral water bottles to recycle can be very worried after the post do not know if this is true or not. Who lives in Bao’an District, Shenzhen, Ms. Lee is very worried about her daughter’s health.

Currently, Ms. Lee said posts have been widely reproduced major websites, the quote also said that the general mineral water bottles with the PET (polyethylene terephthalate) plastic, the bottle is safe to use once, if repeated the use of there carcinogenic risk.

Re-use plastic bottles are common

Bottle re-use can be carcinogenic? This argument has no basis? Is not alarmist talk? Recently, the “Shenzhen Special Zone Daily” reporter on this commenced an investigation.

Now on the market of mineral water, carbonated drinks, juice and other beverage plastic bottle shape beautiful, stylish and easy to carry, very popular among the people welcome. After drinking beverages, reluctant to throw away, leaving the water with the dress. Readers Ms. Zhang said that she often used plastic beverage bottles Sheng bulk soy sauce, vinegar sauce. Finish drink bottles, mineral water bottles lost unfortunately, used to hold things very convenient. This is not the advocate for environmental protection? This is a very saving, environmental protection, and really serve the dual purposes. Taxi driver Mr. Chen said that in order to facilitate and save money, he often used mineral water bottles as cups, and generally are filled with hot water. However, recently, he smelled the strange taste of mineral water bottles have shares, suspected to be caused by the bottle to use for too long.

Members of the public not only the use of plastic drink bottled water, some merchants also brought business. King Long New Village in Longhua a store, the shop on the use of plastic beverage bottles sold peanut oil. Shop owner said the old drink every time, I will drink bottles of cleaning, it should be safe.

The short term rational use of

According to experts, plastic bottom of the bottle triangle marked by important figures. Triangle composed of three arrows, which means recycling on behalf of recyclable, but not able to re-use of the mark. In China, plastic products labeled recycling symbol is not compulsory. Some formal big brands for the convenience of plastic recycling, have recently begun to mark recycling symbol.

Beverage bottles can be re-use? For the reader’s questions, the experts give different answers. Some experts suggested that better not finish the bottle re-use. Because, as with the No. 1 PET (polyethylene terephthalate) beverage bottles made, heat-resistant to 70 ℃ easy to deformation, the use of 10 months may be released carcinogens. No. 2 HDPE (High Density Polyethylene) beverage bottles made from hard to clean, easy to breed bacteria. No. 3 PVC (polyvinyl chloride), No. 4 LDPE (low density polyethylene) made products, when you encounter high temperatures and grease easily release toxic. 6 PS (polystyrene) manufactured products in the chemicals released when the temperature is too high, can not be used to install strong acid (such as orange juice), strong alkaline substances.

Some experts believe that bottle re-use of the transmission line is not as sensational as. When used, it is necessary to see the plastic bottom of the bottle within a triangle marked on the figures, in control of their material properties of the circumstances, can exceed and reasonable utilization. As for those who used to dress in formal manufacturers of mineral water, plastic beverage bottles, can be installed in a short time at room temperature water. But you can not install high-temperature water, and it is not loaded pH beverages.

Bottom of the bottle figures represent the different materials

“Shenzhen Special Zone” reporter visited the supermarkets, shopping malls found that marked bottom of the bottle drinks on the market situation is rather unclear. Labeled as a mineral water bottle at the bottom, the following PET was also marked with letters, mostly brand of mineral water production. Those unknown mineral water, rarely seen bottom of the bottle has an identity. Most dairy beverages, especially for chilled fresh dairy beverages, bottom of the bottle marked with the number 2. “Shenzhen Special Zone” reporter saw the highest rating for a 5 mark is Taiwan’s production of a certain brand of aloe honey drink bottles. Tea drinks in plastic bottles deeper the color, bottom of the bottle rarely marked. Worthy of particular concern is the Coke, Sprite and other carbonated soft drinks category, although its mostly famous international brands, but the bottom of the bottle is basically no triangle figure icon.

Bottom of the bottle for beverage bottles the meaning of identity, not only the general public do not understand, and even shopping malls beverage sales staff do not understand. King Tin in the Futian District, a large supermarket, two employees are being added to the drink on the shelves. “Shenzhen Special Zone” reporter picked up a mineral water bottle, ask them the number 1 inside the triangle bottom of the bottle What is the meaning, are not answer.

Flip phone, in recent years is not Samsung’s major product lines, but as the world’s leading mobile phone business, Samsung still has not given up flip phone, in addition to high-end products introduced this year, G508E, the another is a metallic clamshell, the S3600, However, the low-end of the S3600 is taking the route to skills-oriented, the latest price of 850 yuan.

Samsung S3600C shape, in Xiaobian think it is absolutely forever “epidemic.” All-metal brushed look gives the feeling like to eat “lunch cans,” the same box. But if you think it is an all-metal building products, then you are mistaken. “Sneak” and “metallic” body is actually the body of high-grade engineering plastics coated with a layer of metallic colors. Therefore, S3600C is not a heavy weight in his hand, and body with clamshell shape, measurements size is 98.5 × 49.9 × 15.3mm, 105g of body weight you mention it, not too small.

    Samsung S3600 has a 2.2-inch 65536-color TFT display with a resolution of 176 * 220 pixels, although some of the gap between the resolution of QVGA-level, but the display is quite unsatisfactory. Keyboard connection, S3600c carved with flat metal keyboard, but the keys there is no obvious stripes between the split, but the key area is relatively large, relatively comfortable with them.

    Audio and video connection, the Samsung S3600 has a built-in set of the 1.3 million-pixel camera, support for face capture technology to facilitate the user requirements. In the music player, supporting PNG, MID, JPG, WAV, AMR, GIF, MP3 and other multimedia formats, as well as MPEG4 format video recording.

    In addition, the phone built-in Bluetooth 2.0 devices, FM FM radio and standard USB2.0 interface. The phone’s body memory 30MB, but the user if there is a demand by a third party microSD (T-Flash) memory card expansion of storage capacity can reach 2GB. Commonly used in alarm clock, calculator, and calendar functions are also available.

   Edit Comment: Samsung S3600C has a stylish brushed metal appearance, with a 2.2-inch screen and 1.3 million pixel camera, has also joined the fun matrix shooting. Currently only the price of 850 yuan for the recent purchase program budget, not a lot of friends, should be a good choice.

[Reference price]: Samsung S3600 850 yuan (licensed)

In the PET bottle hot-filling production, direct contact with the materials, packaging materials mainly PET bottles and caps. PET bottles has just blown out, its colony brought the number of small, but because of blowing bottles out of their own with a static, its easy to adsorption in the air of dust, but dust is a good carrier of micro-organisms, this bottles in the storage process will be subject to microbiological contamination, the degree of pollution and PET bottle packaging methods and storage of the environment. ESL for hot-fill PET bottles and caps of the need to select a reasonable manner and in strict control of packaging packaging materials storage and transportation conditions, while in the production must be disinfected before use. In process design, it is necessary according to the original packaging materials to determine the extent of microbial contamination of disinfectants varieties isolator selection, process conditions used in disinfectants and disinfection methods choice.

ESL in the PET bottle production line hot filling, the bottles are the main methods of sterilization disinfectant perfusion method and jetting method. The main mode of air disinfection cover a continuous period of jetting method and immersion method. In the production line design, the need to intensity of the chosen sterilization disinfectant, disinfectant corrosive and irritating to the staff, the production line speed and stability of the isolator requirements as well as manufacturers of quality goods and reasonable package options control the level of material sterilization method.

PET bottles for hot filling production of ESL package material commonly used disinfectant disinfectant mainly hypochlorous acid, chlorine dioxide, peracetic acid and complex-type disinfectant. In general, in the low-speed production line, using perfusion disinfection disinfectant can be maintained with longer duration of action may make use of bactericidal capacity of the weakness of the disinfectant. While in high-speed production line, in order to ensure the reliability of equipment operation, generally to be used disinfectant spray washed method, the same time, in order to reduce the cost of investment in equipment, technology to request disinfectant spray washed, the action time should be as short as possible Therefore, the choice of disinfectant, you should use a strong disinfectant disinfection.

Variety in the choice of disinfectant, in addition to special consideration for the micro-organisms, broad-spectrum bactericidal disinfectant and bactericidal characteristics of strength, the corrosion of the equipment disinfectant, disinfectant of operator injuries, and disinfectant residual in the package material in the focus elements need to be considered. Such as the current isolators commonly used chlorine dioxide, which has a strong irritant, exposure caused by coughing, sneezing, shortness of breath, chest tightness, and runny nose, tears, etc. to stimulate the symptoms can also occur through inhalation of high concentrations of pulmonary edema.

(A) PPA’s basic performance, plastic processing aid-PPA
      (1) automatically speed up the production of blown film or a rolling speed, improve equipment productivity, lower power consumption per unit of production and related management costs. PPA can not change the blown film, rolling equipment, the original process conditions, equipment, production capacity can automatically increase 7-12%. The main power without increasing consumption and the increase of screw speed of Electrical and circumstances, the capacity can be further increased to 10-15%.
(2) a substantial reduction from the blown film or calendering process arising from the crystal points, including the human eye can not be directly observed by the tiny crystal points, therefore, can greatly reduce the fine print caused by the crystallization point of the “white point. ”
(3) can significantly improve various types of blown film or calendered membranes of the surface roughness, especially in the optical microscope shown in the micro smoothness, so the transparency of various types of membrane material, printing ink brightness, fine print outlets uniformity, fine sense of both the level of printing is improved.
(4) Elimination of transmission by the die parts or equipment on the membrane surface caused by the longitudinal drag marks, including the human eye in ordinary light are difficult to see, to be under high-intensity light source can clearly see the longitudinal drag marks.
(5) can reduce the die temperature of 10-15 ℃. Reduce the die temperature, for processing all kinds of high-performance PE materials have an important significance. As the high-performance PE materials melt viscosity, so processing of multiple use of the higher die temperature in order to obtain a higher degree of smoothness membranes. Die temperatures are high, the body of the blown film bubble Wen significant qualitative impact. Especially in the summer, because the cooling air, Central air temperature higher, further affect the foam body Wen characterization. So, it is blown directly limit the rate of increase. PPA can reduce the die temperature of 10-15%, therefore, can improve the general equipment, raw materials for processing various types of high-performance PE foam body Wen characterized, in order to increase production speed, provide a guarantee of processing conditions.
(6) to improve various types of blown film, calendered membrane thickness uniformity and thickness of Wen characterization. Membrane thickness uniformity and Wen qualitative in ensuring the quality of fine print to ensure the reliability and strength of plastic bag sealing of a uniform, multi-layer co-extruded shrink film for ensuring the physical expansion of the bubble uniformity and fine print patterns in Canada Shrink after the proportional shrinkage, there has been significant.
(7) to make additions and metallocene catalyst mLLDPE of the membrane, with uniform sealing fastness, so that the line to the fastness of sealing reliability guarantees the added amount of metallocene catalyst mLLDPE be physical and chemical control to multivesicular body Wen qualitatively improved. PPA can improve the mixing of different ingredients melt melt index of plastics, mLLDPE melt viscosity at high shear rate than ordinary occasions, and with the Ziegler (Ziegler – Natta) catalysts produced by PE high, not only multivesicular body Wen qualitative decline in extruder backpressure and make up the main motor torque increase. High shear rate is a new generation of high-speed film blowing, high-speed multi-layer co-extruded blown film or a rolling device characteristics. Some plastic bag factory in the interest of high-speed membrane sealing effect, often by adding the amount of metallocene-catalyzed mLLDPE transferred to the high side, not only to increased production costs, and the PE melt process conditions worse. PPA after use the above types of process issues can be significantly improved. Plastic Processing Aid-PPA

        (B) plastic processing aid-PPA PPA use additives to ensure a good dispersion, PPA masterbatch form to join. Using the method, is divided into two phases: Phase I ─ established high-tech coating the metal surface. This phase is to be fully functional additive PPA has played an important operation. 5% masterbatch with the preparation of accession to the amount of LLDPE / LDPE raw materials mixed uniformly continuous blown 60 minutes. According to experience, at this stage, it is possible because the PPA began to blow molding equipment, the establishment of lubrication layer of the steel surface will adhere to steel surfaces in the past large numbers of “crystallization point” or impurity “rid”, and continued to blow with the membranes or rolling out of the plastic. Therefore some of the more old-fashioned film blowing machine or rolling equipment, when used at the beginning, you may find a large number of crystal points appeared in the membrane surface. This is completely normal. According to a lot of use of experience, not previously used PPA auxiliary equipment, blown film, or rolling, about 72 hours after the use of the equipment was basically clean, PPA’s performance is fully play. ─ the second phase of the normal production. Production phase is expected to join the normal capacity of the mother or the rolling of the PE for blown plastic materials about 1% of the total weight, depending on the film blowing or calendering line speed (m / min), membrane thickness, blown film die, or rolling equipment gap width of the die wall smoothness, raw materials combined state and other practical circumstances. Plastic Processing Aid-PPA

       (C) plastic processing aid-PPA PPA for the multi-layer co-extruded film of accession methods to discuss multi-layer co-extruded film is a high-quality packaging films mainstream. At the same time, most of the multi-layer co-extruded film for the fine print. Therefore, the multi-layer co-extruded film for the printing of micro-smoothness of the surface, the crystallization point of the human eye can see content of the human eye can not see the point of content of membranes of microcrystalline quality control in the printing of the important elements. In addition, the transparency of multi-layer co-extruded film, but also one of the elements of quality control. For some users to improve the micro-printing surface smoothness and a significant reduction in the surface of the crystal point for printed content, just add the PPA for the printing of the surface processing aids, although to receive good results, but improving Membrane transparency and increase production speed of both is invalid. Therefore, the user if required to improve the transparency of multi-layer co-extruded membrane, if the membrane solely by the olefin type of material (PE, PP) formed, it is recommended for each layer are added PPA. Actual production confirmed that in the PPA each layer are added, the membranes of the layer improved the smoothness, so the overall transparency of the membrane is improved. (D) Production Costing (1) To lower power consumption, increase production capacity to enable enterprises to manage costs. (2) the production of high-quality products, so that waste time decreased. (3) increasing the proportion of LLDPE used to reduce cost of raw materials. (4) using a high-melting means the tensile LLDPE, can film thinning. To sum up the situation, using PPA not only increase costs, but also enabled a comprehensive cost reduction products. (V) the safety of PPA on the PPA in the U.S. FDA (Food and Drug Administration) of the test requirements, it is absolutely safe. The use of PPA by blowing or pressing of the various types of membrane, can be used in drug or food packaging.