Mook
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Not so boring milk package designs!

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Lớp Photoshop cơ bản tới nâng cao cho người mới bắt đầu
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How to calculate the weight of a plastic bag when knowing the size and thickness
https://baobikhangloi.com.vn/cach-tinh-can-nang-cua-tui-nhua-khi-biet-kich-thuoc-va-do-day a. What is specific gravity or density? Specific gravity or density is the mass of matter in a given volume, is calculated by dividing the mass of matter by its volume. Here we have the formula: D = m/V, with D (Density) is the density, m is the mass and V is the volume. b. What does the density index mean? The density of a substance helps us to calculate their weight per unit volume, knowing how much heavier one substance is than another based on their density. For example, gasoline has a density of 700 kg/m3, which means that the amount of gasoline contained in a tank with a volume of 1 cubic meter will weigh 700 kg. Iron has a density of 7800 kg/m3, which means that one cubic meter of iron will weigh exactly 7800 kg. All chemical elements known to man have been found to have their densities by measuring and experimenting many times. c. How to calculate the weight of a plastic bag by density We already have the formula for density above, and when we reverse the equation, we can calculate the weight when we know the density and volume. The formula would be: m= D x V Density is given in kilograms per cubic meter (kg/m3) or grams per cubic centimeter (g/cm3). Given the very light weight of plastic packaging, converting to the g/cm3 system will help simplify the formula for calculating their mass. The density (D) of each plastic material can be found easily online, or from your packaging supplier. This parameter is printed on the plastic resins packaging that they use to create the product. For example: The density (D) of POF shrink film is 0.92 g/cm3, LDPE is 0.91 and PVC is 1.4. The volume of the bag will be calculated by length x width x height, and the height here is the thickness of the bag (of both sides of the bag combined). Don't forget to convert the thickness to cm. If the thickness is being measured in mm, divide it by 10, and if it's in microns, divide it by 10000. Let's take an example: the size of LDPE plastic bags is 80 cm x 150 cm x 70 microns, we have the formula for weight calculation as D x V = 0.91 x 80 x 150 x 0.007 = 76.44 grams/ bag. 1 kg is equal to 1000 grams, dividing 1000 by 76.44 we get 13.08. That is, with the above LDPE 80 x 150 cm bag size 70 micron thick, one kilogram will include about 13 bags.. It should be noted that the thickness in this case is for both sides of the bag, which means that each membrane layer of a bag is only 35 microns thick.
Refrigerator Plastic Bag
https://baobikhangloi.com.vn/tui-dong-lanh There are certain types of products that need to be frozen at low temperatures during storage and transportation, such as fruit, meat, fish, etc. And in reality, there is almost only the packaging whith plastic material, is possible to best meet the preservation requirements for these food items, with the lowest cost. However, not any type of plastic can be used. All packaging materials have different properties, advantages and disadvantages, and only by understanding their physical properties as well as their advantages and disadvantages can we choose the right plastic material. For frozen foods, in addition to preventing them from spoiling, preserving the taste and quality of the food is also a mandatory criterion. Currently, there are three main types of flexible plastic packaging used in the frozen food industry The first type is a simple single-layer bag, which can be PA, EVA or LLDPE. This type of bag has the ability to store in medium frozen conditions, often used to store vegetables or products with short storage and transportation times. Their advantage is that they are easy to produce and use, and have the cheapest price compared to the other two types. The second is a composite film packaging, which is a bag that uses glue to combine two or more layers of plastic film material. For example, OPP combined with LLDPE, or PA and LLDPE. This combination gives them better resistance to moisture, cold and puncture. The third is plastic packaging produced by multi-layer extrusion machine. This machine has multiple feed ports and separate extrusion shafts, but all lead to a single blow die head. This structure allows manufacturers to create a multi-layer packaging with different materials without the need for glues or adhesives. They have both durability, high cold resistance but are also safer for food, as they do not have to use chemicals in the production process. Both PA, LLDPE and EVA are low temperature resistant, tear resistant and puncture resistant. Mixing these materials together during co-extrusion or film lamination can greatly improve moisture, oxidation and mechanical strength properties.
Lý do nên sử dụng dịch vụ khai thuê hải quan
Bạn đang hoạt động trong lĩnh vực sản xuất hàng hóa xuất nhập khẩu và đang có nhu cầu tìm một công ty cung cấp dịch vụ hải quan giá rẻ tại tphcm để có thể có thể hỗ trợ bạn thông quan hàng hóa cho lô hàng hóa xuất nhập khẩu của doanh nghiệp mình. Khi đến đây là bạn đã tìm đúng nơi uy tín cho bạn. Việt nam chúng ta là một nền kinh tế trẻ và năng động được đánh giá là nhà nước có tiềm năng vô cùng lớn trong thương mại nhất là trong lĩnh vực xuất nhập khẩu hàng hóa. Cùng với đó là dịch vụ hải quan cũng đang ngày càng nâng cao. Bất kể doanh nghiệp nào đang kinh doanh hàng hóa xuất nhập khẩu đều có nhu cầu tìm được một đơn vị cung cấp dịch vụ khai báo hải quan chuyên nghiệp nhanh chóng để có thể đồng hành cùng họ trong các chiến lược phát triển của một doanh nghiệp. Vì sao nên sử dụng dịch vụ hải quan tại tphcm Khi lựa chọn dịch vụ tại công ty chúng tôi bạn sẽ nhận được những lợi ích vô cùng to lớn: Tư vấn miễn phí Chúng tôi có kinh nghiệm trong lĩnh vực xuất nhập khẩu đã nhiều năm qua để có đầy đủ kiến thức về những chứng từ cũng như các thủ tục cần chuẩn bị cho lô hàng hóa xuất nhập khẩu. Với những doanh nghiệp chưa có kinh nghiệm trong lĩnh vực xuất nhập khẩu thì công ty chúng tôi sẽ hỗ trợ giải đáp mọi thắc mắc giúp bạn kinh doanh thành công hơn và cung cấp đầy đủ thông tin như các loại hồ sơ cần thiết, cách tính thuế cho lô hàng, cách tính cước vận chuyển quốc tế, kho bãi… Hỗ trợ chuẩn bị hồ sơ nhanh chóng Tại đây khaibaohaiquan.com.vn chúng tôi có thể cung cấp cho bạn đầy đủ thông tin và hồ sơ của lô hàng sẽ khiến cho quá trình xuất nhập khẩu hàng hóa của bạn để cho việc thông quan trở nên thuận lợi, nhanh chóng, tiết kiệm chi phí. Tiết kiệm chi phí: Đơn vị của chúng tôi cung cấp một dịch vụ tốt nhất, chúng tôi có kinh nghiệm trong lĩnh vực chọn cho mình bạn những phương pháp vận chuyển, chuẩn bị hồ sơ nhanh và an toàn, tiết kiệm chi phí hoàn hảo cho doanh nghiệp bạn. Vận chuyển trọn gói: Khi chọn dịch vụ xuất nhập khẩu trọn gói tại đây chính vì vậy bạn không cần phải lo lắng cho hàng hóa trong quá trình vận chuyển, đáp ứng tối đa yêu cầu của bạn. Khi bạn mong muốn sử dụng dịch vụ xuất nhập khẩu tại công ty của chúng tôi bạn sẽ được nhân viên tại đây gửi cho hợp đồng mẫu. Nhờ vào đây hai bên sẽ tiến hành đàm phán để ký kết hợp đồng. Liên hệ với chúng tôi ngay hôm nay để được báo giá dịch vụ hải quan cho lô hàng của bạn. Nguồn: https://congtyindecal.com/dich-vu-hai-quan-gia-re-tai-tphcm-hien-nay.html
From Where To Buy Cigarette Boxes Online?
Cigarette always demands seductive and sturdy packaging boxes to make the product appealing and mind-blowing. In fact, it will not be wrong to say that without packaging boxes cigarettes cannot be sold. That is why the cigarette manufacturer does not take any risk and order captivating Cigarette Packaging boxes. Though the packaging is the most important thing to increase profit there is no doubt at all that the traders are very busy in their life and they do not get the time to visit the outlet time and again and Order empty cigarette boxes. The Cigarette Boxes is the only platform that gives the opportunity to traders to save their time. After shaking hands with us, the customers will come to know that they have no need to visit our outlet to place their order of cigarette packaging boxes. All the specifications, offers, terms, and conditions are mentioned on our website, social media pages, apart from the traders can call us on a given number or contact us through the live chat option as well. Our sales representatives are available 24/ 7 to give you an ideal packaging solution. The traders can now choose their desired packaging boxes and can buy cigarette boxes online. The Best Idea to Wrap Cigarettes Though a lot of sizes and shapes of packaging boxes for cigarettes are manufactured on our platform we always recommend our dear clients to go with customized designs and shapes. Customization allows our dear clients to get your ideal packaging solution to represent your product in the market. In addition to this we manufacture cigarette boxes blank, the blank cigarette packaging boxes give an opportunity to our dear clients to warp their required number of cigarettes inboxes. We never compromise on the quality of packaging boxes. We do not only pay attention to the designs and sizes of cigarettes boxes but also, use natural material to manufacture Empty Cigarette Packaging boxes. We rely on cardboard and Kraft material. Both the materials are not only biodegradable but recyclable and can bear heavy-weighted items quite easily. The best thing about these materials is that they are easy to hold. Yes, these are not heavily weighted. • Contemporary Ideas Boost Up The Business The prime purpose of the cigarette boxes is not only to manufacture the packaging boxes for cigarettes but the main purpose of our company is to enhance your business and make it the first choice of the customers. That is why, no more typical brown color packaging is only manufactured for cigarettes but we build colorful packaging boxes too but for colored packaging, the unbleached packaging material is used. • Increase Profit The designers are hired who use their creative and artistic skills to manufacture cigarette brand boxes. When these designer packaging boxes for cigarettes go in the market. The customers at once get attracted to these products and keep the product in their cart. To increase the profit, not only the customized cigarette packaging boxes but also some flavors are also added like lamination, gloss, and matte quotes. All of these add-ons make the empty cigarette packaging more trendy and classy. • Advertise Your Product The cigarette traders have no need to visit advertising companies to advertise their products. Our manufactured blank printed cigarette packaging boxes are enough to publicize your product in the market. Not only the company and product facts are imprinted on these packaging boxes. But the stylish logo is also embossed that making your product recognizable and identifiable. Printing communicates and finishes the need to investigate the product. No more traditional printing ideas are used but to make the product moderate and up to date digital and UV printing is used to imprint the blank Cigarette Packaging Boxes. Place Your Order Now! We are a few steps away. Just send us an email at sales@thecigaretteboxes.com or call us on the given number and on bulk orders, we will not only give your wholesale rate but free shipping will also be given that will not only save the packaging cost but shipping cost too. Stay connected with us for u comping updates!
En savoir plus sur les sacs en plastique scellés
https://baobikhangloi.com.vn/tui-cat-seal-co-lo-treo b) Structure et fonctionnement de la machine de découpe de joints de sacs en plastique Le principe de fonctionnement de la machine de découpe de joints de sacs en plastique est différent et également beaucoup plus compliqué que la machine de découpe et de scellage de fond de sac normale. Sur les rouleaux de film plastique tubulaire, la soudeuse de fond de sachet n'effectue qu'une seule opération horizontale de découpe et de soudure pour fabriquer un produit. Comme pour le sac scellé, la machine doit couper et sceller 2 lignes parallèles pour former 2 côtés du sac. Mais en premier lieu, le coupeur de sceau doit effectuer une déchirure d'un côté du rouleau de nylon pour former l'embouchure du sac. Cette coupe sera sur un côté du côté du rouleau en plastique lors de la production d'un sac scellé avec une bouche plate, ou à une petite distance du bord du rouleau lorsque vous souhaitez produire un sac en plastique avec un couvercle collé. Le rouleau de nylon après avoir été arraché d'un côté, passera parfois à travers les rouleaux pour fixer la bande adhésive, ou pressera les tyroliennes lorsque vous souhaitez produire des sacs à fermeture éclair, avant d'être emmené par le convoyeur vers le coupe-scellage pour le thermoscellage. Les coupe-joints qui utilisent un seul rouleau de film n'auront pas de partie de déchirure, mais à la place un système qui double la membrane avec des cadres de pliage mécaniques. On peut dire que la machine à sceller le fond du sac produit des sacs dans le sens vertical et ne façonne que le fond du sac, tandis que la découpeuse de scellage produit des sacs dans le sens horizontal et façonne simultanément les deux côtés et l'embouchure du sac. Les coupe-scellés ont également de nombreuses variantes ou accessoires tels que des cadres pliants, des moules de poinçonnage ou des cutters qui peuvent être ajoutés pour produire des sacs plus complexes tels que : des sacs pliants à fond, des sacs à découper des scellés à 2 étages avec des trous de suspension.
What are the special features of vacuum bags, what material are they made of?
https://baobikhangloi.com.vn/tui-hut-chan-khong-mang-ghep-pa-pe Depending on the purpose of packaging, we can use single-layer plastic bags or laminated film packaging (multi-layer) to vacuum. In theory, all types of plastic bags can be vacuumed, as long as they are thick enough to not tear under the strong suction of the vacuum. After the air is sucked out and sealed, the packaging must remain intact so that air does not re-enter the interior. For the purpose of vacuuming for family activities, most types of thick enough plastic bags can meet well. However, in industrial production, the story is completely different. Vacuum bags for frozen foods require the ability to withstand low temperatures for a long time without drying out, a phenomenon that common plastic materials such as LDPE, HDPE or PP all face. As for the purpose of packaging to minimize the volume and volume of packages such as pillowcases, comforters, mattresses, etc., The packaging used needs to be soft and flexible but still has to be strong enough to withstand extreme suction, compressing the product inside to the smallest possible size. High-thickness Low-density Polyethylene (LDPE) bags can meet these packaging requirements. When the vacuum cleaner sucks the air out of the package, it creates wrinkles and shrinks on the package. With stiffer materials such as Polypropylene (PP) or High-density Polyethylene (HDPE), these creases can form tearing folds that lead to packaging failure. Vacuum LDPE bags can also be added to the material tank when being produced, adding a toughness additive to the material tank, which improves packaging performance significantly. Returning to the vacuum-sealed plastic bag for frozen food, manufacturers need to find a material that can withstand strong suction to completely remove the air inside, and can withstand freezing temperatures for a long time. There are many engineering plastics that can meet this requirement, but they have problems with heat sealing. And most importantly, they have not been proven to be safe and approved for food storage according to the standards issued in many countries. Using such packaging would be very unsafe, and the product contained inside would almost no longer have a chance to be exported. And the main solution is a type of laminated film packaging made up of many layers of materials combined to create outstanding properties, with the innermost layer in direct contact with the product being food safe materials (LDPE). and outer layers are engineering plastics with outstanding properties. There are many types of vacuum bags with different compositions such as PET/PE, PA/PE, PE/PA/EVOH, OPET/PP, OPA/PP, etc. There are also bags due to special requirements that are composed of 5, even 7 different layers of film. The selection of the right type of vacuum bag will be based on the needs and responsiveness of each type of material that makes them up. For example, bags made of PA/PE are safe to boil at 100°C, but cannot be sterilized at 121°C, but PA/PP or PET/PP bags can. This is because the melting point of PE is only 120°C and PP is up to 165°C. There is one thing in common among all vacuum bags currently on the market, is that they can all be considered freezer safe, because this is the core purpose of this type of packaging.
Criteria for choosing plastic packaging from the manufacturer's perspective
https://baobikhangloi.com.vn/tieu-chi-lua-chon-bao-bi-nhua-duoi-goc-nhin-cua-nha-san-xuat 1. What plastic material will be suitable for your packaging? To determine the material, let's take a look at the characteristics of each of the major resins commonly used. Polyethylene (PE) packaging is the most basic in terms of both production process and appearance. They are cheap and easy to manufacture, and therefore occupy a large market share, appearing in all supply chains to retail chains. PE plastic is divided into HDPE or LDPE (high density and low density). HDPE bags are hard and strong, have more opacity than LDPE. LDPE plastic bags are more resilient and can be stretched than HDPE. Bags made of PP (Polypropylene) or OPP (Orient-Polypropylene) are much harder and transparent than PE, but they are also very easy to tear when there is a puncture or scratch. In addition to the type of plastic, customers can also decide to use virgin plastic or recycled plastic, mixed with a certain ratio. Usually, to save costs for customers, manufacturers also often recommend that they order bags from recycled polyethylene. However, manufacturers still do not have a unified standard on the mixing ratio and a general assessment of the impact on the durability of recycled bags. Of course, their mechanical properties such as strength and toughness will decrease as the mixing ratio is increased. In addition, they will not look as good as products made of virgin plastic. Even a non-professional can tell with the naked eye that he is holding a bag made of recycled plastic in his hand. Not all manufacturers agree to use recycled plastic in their production processes, especially for food packaging items. This form of cost savings can only be realized when producing packaging for the secondary market. Products made from recycled plastic are often cloudy, gray or dirty beige. People often produce black plastic bags to cover these defects.
Technical data sheet: properties and parameters of plasic resin
https://baobikhangloi.com.vn/bang-du-lieu-ky-thuat-cac-dac-tinh-va-thong-so-cua-hat-nhua 1. Melt Flow Index (MFI) Melt Flow Index (MFI) or also known as flow rate - Melt Flow Rate (MFR) is a measure of the ability of molten plastic to move under a specific pressure. This is an important, regularly tested metric as they tell us and control the flow of molten plastic from the tank through the screw to the blow mold, die, injection molding head or any other parts that have any other shaping function. MFI is inversely proportional to the viscosity of the resin. Low MFI means high viscosity materials, they flow with greater resistance and hence slower than low viscosity materials. The MFI can be the only indicator on the technical data sheet that has no specific value that can vary significantly from batch to batch with the same resin code. This is because polymer copolymerization is unlikely to take place precisely at the molecular level. The length of the polymer chains affects the average molecular weight and viscosity of the finished product, and changes the MFI. In many cases, MFI index is the criterion to evaluate the quality of a batch produced on the same type of plastic resin and manufacturer. The MFI index tells us which materials are suitable for which type and treatment method in the manufacturing industry. Injection molding machines, blow extruders tend to be suitable for materials with high flow rates (low viscosity). The extruder is compatible with low flow rate (high viscosity) materials. Strict control of the MFI value of input materials is important to the productivity and quality of the product. The MFI number exceeds the normal level, causing the plastic to be pushed out too quickly, and if it is too low, will cause the plastic to flow out too slowly. In all cases, other parameters on the mechanical system are affected. There are two methods of measuring plastic flow, automatic or manual, based on ASTM D1238 or ISO 1133 test standards. The manual measurement process, temporarily called process A, is useful for organizations whom do occasional testing, using a variety of materials in order to find a better and more suitable material for their production of plastic products job. Process B, on the other hand, is an automated process, ideal for organizations that repeatedly test the same material under different conditions, to find the correct value for scientific purposes. Theoretically, both methods, if properly implemented, should give identical test results. The range of factors that can affect MFI flow index test results is very wide. For accurate results, it is necessary to be aware of each problem, strictly follow the equipment inspection and maintenance procedures. The plastometer machine used in the test is constructed of a temperature-controlled cylindrical material tank. The resin introduced into this tube, after being melted, is forced to flow through a capillary tube with a diameter of 2,095 mm at the bottom of the barrel, under the pressure of a piston actuated by a standard weight. The mass of molten plastic in grams that flows through the capillary in 10 minutes is the MFI of the material. There is also a slight difference between standards ASTM D1238 and ISO 1133. But they perform essentially the same function, and the manufacturers consider them to be technically equivalent. ASTM D1238 is the test method for measuring MFI flow rates for thermoplastics expressed in units of grams/10 minutes. And ISO 1133 standard defines volumetric melt rate (MVR) in cm3/ 10 minutes The melt volume (MVR) obtained in the ISO 1133 test, multiplied by the melt density gives the MFI. However, it should be noted that the density when melted plastic is not the same as the density of the material under normal conditions. For example, Polypropylene has a specific density of 0.91 grams/cm3 but their melting density is only 0.70 grams/cm3. Applying the density or density value under normal conditions to calculate the MFI with the MVR value gives misleading results.