Warm Global Customers
With China Plastic Machinery
With China Plastic Machinery
Plastic barrels are mostly made of polyethylene, polypropylene and other plastics blow molding, injection molding, Shanghai Plastic Products Chemical, Pesticide, Medicine, Food, Hardware Electronics, Electromechanical and other industries liquid, solid goods outer packaging.
Plastic barrels are mostly used for the storage and transportation of various liquids, and have good characteristics for special dangerous goods packaging. It has the characteristics of not easy to break, not rust, light weight, and excellent oil resistance and strong corrosion resistance. It is mostly used for dangerous goods packaging that requires heat preservation, moisture resistance, pressure resistance, and corrosion resistance. Plastic barrels are mostly made of polyethylene, polypropylene, polyester and other plastics blow molding, injection molding, suction molding, and rotational molding. They are mostly used to hold liquids and solid goods in chemical, pesticide, medicine, food, hardware electronics, electromechanical and other industries. Specifications range from 0.25L--220L
Open and closed plastic barrels and 1000L container plastic barrels. It can be used for goods storage or transportation turnover. At present, the maximum capacity of plastic barrels produced by rotational molding can reach 50 tons.
Some products can be used for hot filling, and the general temperature should not exceed 60¡æ. After hot filling, the lid and stacking should be closed only after the contents are fully cooled and dropped to room temperature. Excellent weather resistance of 60¡æ-40¡æ.
The main raw material for the production of plastic barrels is polyethylene (PE), referred to as PE, which is a high-molecular organic compound formed by the addition polymerization of ethylene. Polyethylene is recognized as the best material for contact with food in the world. It is non-toxic, tasteless, and odorless, and meets the sanitation standards for food packaging. Polyethylene film is light and transparent, and has the properties of moisture resistance, oxidation resistance, acid resistance, alkali resistance, general air tightness, and excellent heat sealing. It is known as the "flower of plastics" and is the most used and most important material for plastic packaging printing.
Polyvinyl chloride
PVC, with a molecular formula of (CH2¡ªCH2CL)n, is the main type of vinyl polymer and the second largest plastic in the world after polyethylene. Its output in China ranks first among plastics. In the printing industry, polyvinyl chloride colored calendering film and transparent glazing film are often used to make packaging and decoration for covers of books, folders, tickets, etc.
Shrink film
Shrink film is a thermoplastic film that is stretched and oriented during the production process and shrinks when exposed to hot air or infrared radiation during use. After heat treatment, the film is tightly wrapped around the packaged object, and the shrinkage force reaches its maximum value during the cooling stage, and can be stored for a long time.
Low-density polyethylene
Low-density polyethylene, referred to as LDPE, is the largest variety used in the plastic packaging and printing industry in various countries. The specific gravity is 0.92-0.93, and it can float on water. Low crystallinity (60%), bulk polymerization at a pressure of 1000-3000kg/C©O, so it is also called high-pressure polyethylene. At 23¡æ, the density is about 0.92. The calendering formability is poor, and it is suitable for processing into tubular film by blow molding. Suitable for food packaging, fiber product packaging, and daily chemical product packaging. Signs of degradable plastic bags
High-density polyethylene
High-density polyethylene, referred to as HDPE. The density is 0.941-0.965g/cubic centimeter. It is polymerized at low pressure, so it is also called low-pressure polyethylene. It is milky white, indicating that the gloss is poor. The film can be processed by blow molding and T-die extrusion process. It is heat-resistant and steam-resistant, cold-resistant and freezing-resistant, moisture-proof, gas-proof, and has good insulation properties. It is not easy to break, and its strength is twice that of LDPE. It is very easy to open. It has strong paper-like properties and is known as "paper-like plastic film."
Polypropylene film
Biaxially oriented polypropylene film, also known as biaxially oriented polypropylene film, English abbreviation code BOPP, is characterized by oriented stretch molecules, and its mechanical strength, folding strength, air density, and moisture barrier properties are better than ordinary plastic films. Compared with cellophane per unit area, the unit price is lower than cellophane. Because this film has excellent transparency, the color reproduced after printing is particularly bright and beautiful, and it is an important substrate for plastic composite flexible packaging.
Scope of application:
Plastic packaging barrels are mostly used for the storage and transportation of various liquids. They have good properties for special dangerous goods. They are not easy to break, rust, light, and not easy to deform. They are also oil-resistant and highly corrosive. They are excellent for packaging dangerous goods that require heat preservation, moisture resistance, pressure resistance, and corrosion resistance. They are mostly used to hold liquids and solid items in chemical raw materials, pesticides, lubricants, coatings, medicines, food, hardware and electronics, electromechanical and other industries. Specifications range from 100mL to 200L.
Functions and features of barrels:
1. The plastic barrel is beautiful, smooth inside and outside, seamless, light, strong, impact-resistant, corrosion-resistant, non-toxic and tasteless, and easy to transport.
2. Long service life, under normal filling, transportation and loading and unloading conditions, the shelf life is 1.5 years.
3 The product technical parameters strictly comply with national standards, and the product appearance design and product size can also be tailored according to needs.
4. It can be used for hot filling, and the general temperature should not exceed 60¡æ. After hot filling, the lid and stacking should be closed only after the contents are fully cooled and cooled to room temperature.
5. If it contains easily dispersed chemicals, it can be equipped with a lid with exhaust function to avoid the danger of overpressure during transportation, while ensuring the sealing performance of the liquid.
Product features: storage, stacking, canning, the whole process greatly saves space and materials. Lightweight, low temperature resistant, corrosion resistant, reduced pollution, super clean, and acid, alkali, high temperature resistant, non-toxic, sterile, odorless, and has excellent elasticity and impact resistance, meeting the requirements of medical testing.
Raw material preparation, blow molding, injection molding, demoulding and trimming, waste crushing, drying, assembly, final inspection and storage
Appearance characteristics
Soft plastic barrels are beautiful, light, strong, impact resistant, corrosion resistant, foldable, non-toxic and odorless, and easy to transport. The product is suitable for packaging of various salted and brine liquid foods, condiments, medical and health products, alcoholic beverages and fine chemical products. Product features: acid, alkali, high temperature resistant, non-toxic, sterile, odorless, and has excellent elasticity and impact resistance.
Product advantages: folding, stacking, storage, transportation, stacking, canning, the whole process greatly saves space and materials. Lightweight, cold-resistant, corrosion-resistant, reduces pollution, super clean, and meets the requirements of medical testing.
Product Uses:
Food packaging: packaging for sauces, oils, vinegar, condiments, milk, lactic acid, etc.
Beverage packaging: packaging for wine, sake, fruit wine, mixed wine, juice, mineral water, etc.
Chemical packaging: packaging for fine chemicals, liquid fertilizers, pesticides, treatment agents, cleaning agents, etc.
Medical packaging: packaging for medical reagents, disinfectants, developers, fixatives, distilled water, etc.
a. Dangerous goods that can be shipped in plastic packaging barrels include: Dangerous goods Category I: d¡Ü1.2: acetic acid (acetic acid, glacial acetic acid) acetic anhydride aniline cresol phenol hydrochloric acid (36%) crude oil diesel kerosene (kerosene for lamps) petroleum solvent hydrofluoric acid (¡Ü60%)
Category II: d£¾1.2: formic acid silicic acid hydrogen bromide solution hydrogen iodide solution chromic acid (30%) perchloric acid (¡Ü50%) potassium hydroxide solution sodium hydroxide solution nitric acid (¡Ü55%) sulfuric acid waste sulfuric acid
Category III : d¡Ü1.2: Propionic acid Acrylic acid Methacrylic acid Ammonia solution Formaldehyde (¡Ü35%) Furfuryl alcohol Ethylene glycol monoethyl ether Hypochlorite solution (¡Ü16%) Alkylphenols (including C2-C8 homologues)
Class IV: d£¾1.2: Ferric chloride Phosphoric acid Alcohols (limited to Class II and III) such as methanol, ethanol (alcohol), propanol, butanol Esters (limited to Class II and III) such as di-n-butyl phosphite Ketones (limited to Class II and III) Ethers (limited to Class II and III) Aliphatic hydrocarbons (limited to Class II and III)
b. Items that cannot be shipped in plastic packaging barrels include: Dangerous goods that require Class I packaging such as fuming sulfuric acid, concentrated nitric acid with a concentration of more than 55% and fuming nitric acid. Benzene, toluene, xylene, chlorobenzene, gasoline, condensate oil, liquid ammonia, liquid chlorine, ethylene oxide, etc.
High-density polyethylene
The material used for blow molding hollow plastic containers is low-pressure high-density polyethylene, also known as HDPE. High-density polyethylene is a highly crystalline, non-polar thermoplastic resin. The appearance of the original HDPE is milky white, and it is translucent to a certain extent in the thin section. PE has excellent resistance to most domestic and industrial chemicals. Certain types of chemicals can cause chemical corrosion, such as corrosive oxidizers (concentrated nitric acid), aromatic hydrocarbons (xylene) and halogenated hydrocarbons (carbon tetrachloride). The polymer is non-hygroscopic and has good water vapor resistance and can be used for packaging purposes. HDPE has very good electrical properties, especially high dielectric strength of insulation, making it very suitable for wires and cables. Medium to high molecular weight grades have excellent impact resistance, even at room temperature or at low temperatures of -40F. The unique characteristics of various grades of HDPE are the appropriate combination of four basic variables: density, molecular weight, molecular weight distribution and additives. Different catalysts are used to produce customized special performance polymers. These variables are combined to produce HDPE grades for different purposes; achieving the best balance in performance.
High-density polyethylene is a non-toxic, tasteless, odorless white granule with a melting point of about 130¡ãC and a relative density of 0.941~0.960. It has good heat and cold resistance, good chemical stability, high rigidity and toughness, and good mechanical strength. Dielectric properties and environmental stress cracking resistance are also good.
Melting temperature 220~260¡ãC. For materials with larger molecules, the recommended melting temperature range is between 200~250¡ãC.
PE can be manufactured by a wide range of different processing methods. With ethylene as the main raw material, propylene, 1-butene, and hexene as copolymers, under the action of a catalyst, a slurry polymerization or gas phase polymerization process is used. The resulting polymer is flashed, separated, dried, granulated, and other processes to obtain a finished product with uniform particles. These include sheet extrusion, film extrusion, pipe or profile extrusion, blow molding, injection molding and rotational molding.
Extrusion: Grades used for extrusion production generally have a melt index of less than 1 and a medium to wide MWD. Low MI can achieve suitable melt strength during processing. Wider MWD grades are more suitable for extrusion because they have higher production speeds, lower die pressures and reduced melt fracture tendency.
PE has many extrusion uses, such as wires, cables, hoses, pipes and profiles. Pipe applications range from small-section yellow pipes for natural gas to 48in diameter thick-walled black pipes for industrial and urban pipelines. Large diameter hollow wall pipes are growing rapidly as a substitute for concrete storm drains and other sewer lines.
Sheets and Thermoforming: The thermoformed linings of many large picnic-type coolers are made of PE, which is tough, light and durable. Other sheet and thermoformed products include fenders, tank liners, tray covers, shipping boxes and cans. A large and rapidly growing sheet application is ground film or pool lining, which is based on the toughness, chemical resistance and impermeability of MDPE.
Blow molding: More than 1/3 of HDPE sold in the United States is used for blow molding applications. These range from bottles for bleach, motor oil, detergent, milk and distilled water to large refrigerators, automobile fuel tanks and cans. The properties of blow molding grades, such as melt strength, ES-CR and toughness, are similar to those used for sheet and thermoforming applications, so similar grades can be used.
Injection-blow molding is commonly used to make smaller containers (less than 16 oz) for packaging pharmaceuticals, shampoos and cosmetics. One advantage of this process is that the bottles are automatically deburred, eliminating the need for post-process finishing steps as in conventional blow molding. Although there are some narrow MWD grades for improved surface finish, medium to wide MWD grades are generally used.
Injection molding: HDPE has countless applications, ranging from reusable thin-walled beverage cups to 5-gsl cans, consuming 1/5 of the HDPE produced in China. Injection molding grades generally have a melt index of 5-10, with tough, lower-flow grades and higher-flow grades for processability. Uses include thin-wall packaging for daily necessities and food; tough, durable food and paint cans; high environmental stress cracking resistance applications such as small engine fuel tanks and 90-gal garbage cans.
Rotational molding: Materials used in this process are generally crushed into powders that melt and flow during thermal cycles. Rotomolding uses two types of PE: general-purpose and cross-linkable. General-purpose MDPE/HDPE usually has a density range of 0.935 to 0.945 g/cc, has a narrow MWD, and gives the product high impact and minimal warpage, and its melt index range is generally 3-8. Higher MI grades are generally not suitable because they do not have the impact and environmental stress cracking resistance desired for rotomolded products.
High-performance rotomolding applications take advantage of the unique properties of its chemically cross-linkable grades. These grades have good fluidity in the first stage of the molding cycle, and then cross-link to form their excellent resistance to environmental stress cracking, toughness. Abrasion resistance and weather resistance. Cross-linkable PE is uniquely suited for large containers, ranging from 500-gal tanks for transporting various chemicals to 20,000-gal agricultural storage tanks.
Film: PE film processing is generally processed by ordinary blown film processing or flat extrusion processing. Most PE is used for film, and general low-density PE (LDPE) or linear low-density PE (LLDPE) are available. HDPE film grades are generally used where superior stretchability and excellent impermeability are required. For example, HDPE film is often used in commodity bags, grocery bags and food packaging.
Polyvinyl chloride is also a commonly used plastic. It is a resin composed of polyvinyl chloride resin, plasticizer and antioxidant, and is non-toxic in itself. However, the main auxiliary materials such as plasticizers and antioxidants added are toxic. The plasticizers in daily polyvinyl chloride plastics mainly use dibutyl terephthalate, dioctyl phthalate, etc. These chemicals are toxic, and the antioxidant lead stearate of polyvinyl chloride is also toxic. Polyvinyl chloride (PVC) products containing lead salt antioxidants will precipitate lead when they come into contact with ethanol, ether and other solvents. When polyvinyl chloride containing lead salts is used as food packaging and meets fried dough sticks, fried cakes, fried fish, cooked meat products, cakes and snacks, the lead molecules will diffuse into the oil, so polyvinyl chloride plastic bags cannot be used to hold food, especially oil-containing foods.
In addition, polyvinyl chloride plastic products will slowly decompose hydrogen chloride gas at higher temperatures, such as around 50 degrees. This gas is harmful to the human body, so polyvinyl chloride products are not suitable for food packaging. Bakelite (phenolic plastic) contains free phenol and formaldehyde, which are toxic to the human body and are not suitable for storing food and food packaging. Although urea-formaldehyde plastic is odorless and tasteless, free formaldehyde will be precipitated when it is placed in 100-degree boiling water or used to hold vinegar-based foods, which is harmful to the human body. Therefore, it is not suitable for use as tableware or food packaging. The renewal products of waste plastics (some of which may have a small amount of new materials added) are difficult to guarantee to be non-toxic due to their complex composition, so they are generally not used as food containers and packaging.
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