Plastic Jars

Mingda: Your Professional Plastic Jars Manufacturer!

Mingda Plastic Products Co., Ltd. is a comprehensive manufacturer of medical and food plastic packaging containers specializing in design, development, production and sales. Our products are specialized in packaging containers for food, pharmaceutical and healthcare applications, supplements and cosmetics.

Excellent R&D Team

The company has a R&D team of 20 people and a technical team of 50 people. We conduct strict supervision and control from product design, mold making, packaging solutions and logistics transportation.

Customizable

We have 8 years of production experience, and all products can be customized OEM and ODM.

Quality Assurance

Our products have obtained ROSH, CE, BV, SGS, REACH and other certificates.

Advanced Instruments

The company has 172 sets of production equipment, 10,000-level inspection rooms and professional testing equipment.

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What is Plastic Jars

Plastic jars are containers made of plastic material. They come in various sizes and shapes and can be transparent or colored. These jars are commonly used to store a variety of products such as cosmetics, personal care products, paints, tablets, creams, lotions, powders, and food products.

Features of Plastic Jars

Good Formability

Plastic is a great material in terms of formability. Plastics can be molded, cast, rolled, pressed, stamped, extruded, etc. They can form complex shapes, including shapes that are difficult or impossible to form with other materials.

Resistant to Chemical and Water Degradation

Our products will not corrode or degrade like metals. Metal can rust, weakening the structural integrity of the container. Rust also poses the threat of product contamination, especially food and pharmaceuticals.

Light Weight

Plastic is approximately 0.8 to 1.5 times denser than water. Steel is about 7.8 times denser, while glass and ceramics are about 2 to 3 times denser. This shows that plastic is much lighter than metal and glass used for the same application. In addition, our products are carefully designed to have a high strength-to-mass ratio.

Flexibility

Our products can be made from different types of chemicals through a variety of processes. Each type of plastic has inherent mechanical properties. These properties are modified by compounding special additives that increase its flexibility and strength.

Materials of Plastic Jars

Polyethylene (PE)

Polyethylene is a commonly used plastic material that is lightweight, durable and has excellent chemical resistance. It is often used in food and household items.

Polypropylene (PP)

Polypropylene is a strong and lightweight plastic with excellent heat and chemical resistance. It is commonly used in food packaging, cosmetics and household products.

Polycarbonate (PC)

Polycarbonate is a tough, durable plastic with excellent transparency and high temperature resistance. It is commonly used in baby bottles, food storage containers and medical equipment.

Polyethylene Terephthalate (PET)

Polyethylene terephthalate is a recyclable plastic that is lightweight and has excellent barrier properties against water, oxygen and carbon dioxide. It is commonly used in food and beverage containers.

ABS

ABS is a tough and durable plastic that is impact, heat and chemical resistant. It is commonly used in household items, toys, and automotive parts.

Polystyrene (PS)

Polystyrene is a lightweight, rigid plastic commonly used in disposable food packaging, medical equipment and insulation.

Benefits of Using Plastic Jars

Long Service Life

Plastic Jars are chemically and abrasion resistant, making them less likely to degrade under normal conditions. This gives them a long service life. Some plastic additives further enhance their durability by resisting oxidation and UV radiation.

Recyclability

Like glass and metal, Plastic Jars can be recycled. Traditionally, plastic is recycled by heating and melting it. By heating, the plastic melts and is shaped into the raw material from which new plastic products are made.

Low Production Cost

Plastic Jars are easy to shape and require less energy to produce than metal and glass containers. Plastic is easy to shape when heated, requiring only moderate pressure. Plastics can even be shaped using compressed air. The temperature of its molten state is not as high as that of metals and glasses. The plastic in this state can be injection molded without the need for expensive molds and tooling.

Safety and Hygiene

Plastic jars are very hygienic and can be washed and sterilized, thus maintaining the good hygiene of their inner containers. In addition, it has waterproof and antibacterial properties, making it easier for users to keep clean and hygienic.

Process of Plastic Jars

Injection Molding

Injection molding is a plastic molding process that involves injecting molten plastic into an enclosed cavity or mold. The process has three main operations: heating and grinding the plastic until it flows under pressure, injecting the plastic into the mold and allowing it to cool, and opening the mold to eject the plastic container.

Blow Molding

Blow molding forms plastic containers by inflating a softened plastic compound inside a mold. The main processes of blow molding are: heating the plastic and shaping it into a tube called a parison or preform, closing and clamping the preform between two molds, inflating the preform, and cooling the product. Eject it from the mold.

Rotational Molding

Rotational molding, commonly referred to as "rotational molding," is a plastic casting technology used to produce hollow and seamless plastic containers. The process uses no pressure to form its product.

Thermoforming

Thermoforming is a process in which a thin plastic sheet is heated to forming temperature and stretched over a mold. It is a secondary plastic molding process that does not use plastic raw materials for compounding. Instead, it uses plastic sheet or film produced through a preliminary process such as extrusion or calendering.

How to Choose Plastic Jars

Determine Purpose

The first thing to consider when choosing plastic jars is what you plan to use them for. For example, if you plan to store food or liquids, you will need food-grade plastic jars that are safe for food storage.

Jar Type

The most important point to consider should be the jar type. You cannot use jars of any kind to package your products, especially when handling food, as some plastic jars may contaminate the product. Polyethylene terephthalate (PET or PETE) and high-density polyethylene (HDPE) bottles are the safest plastic bottles of any product.

Size

The size of the plastic jar depends on the items you want to store. If the quantity is small, choose jars with proportional sizes. Large quantities require larger jars.

Width

Width should be the third factor to consider. Plastic jars come in different diameters. You should determine what diameter is suitable for your product.

Special Function

Plastic jars come with airtight lids or snap-on lids to keep items fresh for longer. Choose plastic jars with special features that suit your needs.

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Preparation Before Cleaning
First, if there is any residue in the plastic jar, remove it, which will make cleaning easier and more thorough. Then, prepare the necessary cleaning supplies such as sponges, detergent, dishwashing liquid, or vinegar.

Clean with Detergent
Use a cleaning tool such as a sponge or brush on the inner wall and bottom of the plastic jar, adding an appropriate amount of detergent and warm water. Cleaners can moisturize residue and make cleaning easier. The cleaner can be dishwashing liquid, an all-purpose cleaner, or a cleaner specifically designed for plastics. Add the detergent to water according to the detergent instructions and stir until the foam is rich.

Clean Thoroughly
Use detergent and a sponge or brush to give the inside walls and bottom of the plastic jar a deep clean to make sure dirt and bacteria are completely removed. Note that if the plastic jar has corners or grooves that are difficult to clean, use a small sponge or brush to clean it.

Rinse Clean
Scrub the inside of the plastic jar with clean water to ensure that any detergent residue is completely removed. Rinse with clean water several times until completely rinsed.

Dry
Place the plastic jar in a well-ventilated area to dry, making sure all moisture has evaporated, then place the lid on the jar and store.

Applications of Plastic Jars

Package

Plastic jars are commonly used to package a variety of products, including food, cosmetics, and household items. They are particularly useful for packaging products that need to remain airtight or moisture-proof.

Storage

Plastic jars are commonly used for storage in homes and industries. They can be used to store food, crafts, hardware, and more.

Medical

In the medical field, plastic jars are used to store and transport medical supplies, specimens, and medications.

Beauty and Personal Care

Plastic jars are often used to store beauty and personal care products such as lotions, creams, and serums.

Electronic Product

Plastic jars are used in the electronics industry to package and protect electronic components.

Household Cleaning

Plastic jars with spray tops are widely used for household cleaning products.

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Frequently Asked Questions

Q: What are plastic jars made of?

A: Plastic jars are typically made of polyethylene terephthalate (PET) or high-density polyethylene (HDPE) plastic.

Q: What are the common uses of plastic jars?

A: 1. Food Storage – Plastic jars are commonly used to store food items such as pasta, cereal, nuts, spices, and other dry goods.
2. Cosmetics and Personal Care Products – Plastic jars are used to hold cosmetics, lotions, soaps, creams, and other personal care products.

Q: What are the different sizes of plastic jars?

A: There are many different sizes of plastic jars available, from small containers for pills and spices to larger containers for food storage and industrial purposes. Some common sizes of plastic jars include: 1 oz (30 ml), 2 oz (60 ml), 4 oz (120 ml), and more.

Q: What are the colors available in plastic jars?

A: Plastic jars come in a variety of colors, some common colors are: white, black, blue, and green. Special color options are also available, such as metallic tones, neon colors, and matte finishes. Color options may vary depending on the manufacturer and the type of plastic used in the jar.

Q: Are plastic jars reusable?

A: Yes, plastic jars are reusable as long as they are in good condition and have been properly cleaned. However, over time, plastic may become brittle or discolored, making it less suitable for reuse. It is important to note that not all plastic jars are safe for reuse, especially if they have previously contained toxic or harmful substances.

Q: Are plastic jars safe to use for food storage?

A: Plastic jars are generally safe to use for storing food, as long as they are made from food-grade materials and bear a food-grade label. Before using a plastic jar, you should check to make sure it is BPA-free and avoid using it for high-temperature items like soup or hot liquids. Additionally, some plastics may leach chemicals into food over time, so it's important to replace them after a while and avoid exposing them to sunlight or extreme temperatures.

Q: What are the benefits of using plastic jars?

A: Plastic jars are lightweight and easy to transport and handle. And plastic jars are durable and shatterproof, reducing the possibility of breakage during transportation or use.

Q: What are the disadvantages of using plastic jars?

A: Plastic jars are not suitable for storing hot liquids or food because they can warp or melt, leading to contamination and potential health risks.

Q: How can you clean plastic jars?

A: The first step in cleaning plastic jars is to rinse them with hot water. This will help remove any loose dirt or debris. After rinsing the jar, apply a small amount of dishwashing liquid to the surface of the plastic jar. Use a sponge or soft cloth to gently scrub the jar, paying special attention to any areas that are stained or have sticky residue. Finally, after cleaning and rinsing the jars, make sure they are completely dry before use or storage. You can use a clean dish towel or place it on a drying rack to air dry.

Q: Can plastic jars withstand high temperatures?

A: It depends on the type of plastic used to make the jar. Some plastic jars, such as those made of polypropylene or PET, can withstand temperatures up to 212°F (100°C). However, other plastics, such as high-density polyethylene (HDPE) or polystyrene, may become deformed or melt at high temperatures. It is important to check the temperature rating of the specific plastic jar before using it with hot contents.

Q: Are plastic jars microwave safe?

A: It depends on the type of plastic. Some plastics, such as microwave-safe polypropylene, polycarbonate, and polyethylene, can be used in microwave ovens. However, other types of plastic containers may release harmful chemicals or melt in the microwave. Always check the label or manufacturer's instructions before using any plastic container in the microwave.

Q: Are plastic jars dishwasher safe?

A: It depends on the type of plastic and the specific product. Some plastic jars are labeled as dishwasher safe, while others are not. It is best to check the manufacturer's instructions before placing any plastic item in the dishwasher to avoid any damage or warping.

Q: What are the different shapes of plastic jars?

A: There are many different shapes of plastic jars to choose from, including: round plastic jars, square plastic jars, rectangular plastic jars, oval plastic jars, spherical plastic jars, and more.

Q: Are plastic jars airtight?

A: Generally speaking, plastic tanks can be airtight, but this depends on the specific design and materials used in their construction. Some plastic jars have screw-on lids or snap-on lids that create an airtight seal when closed properly. However, other plastic jars may have looser lids or may not be designed to be airtight, so it's important to check product specifications or test the container before relying on the container to keep the contents airtight.

Q: Are plastic jars freezer safe?

A: Yes, plastic jars that are marked as freezer-safe are safe to use in the freezer. However, it is important to check the specific instructions and limitations provided by the manufacturer for each jar to ensure that they are suitable for the type of food or beverage stored in the freezer. It is also recommended to leave some extra space in the jar to prevent expansion and cracking due to freezing.

Q: How long do plastic jars last?

A: The lifespan of a plastic tank depends on a variety of factors, such as the type of plastic used and storage and use conditions. If a plastic jar is stored in a dry, cool place, it can last for several years, whereas exposure to heat, chemicals, and sunlight can damage the plastic and shorten its lifespan. It is recommended to consult the manufacturer or check the label for instructions on how to care for your specific plastic jar.

Q: Are plastic jars environmentally friendly?

A: Some plastic jars can be recycled and reused, which helps reduce environmental impact. Additionally, some types of plastics, such as those made from plant materials, are considered more environmentally friendly than traditional plastics.

Q: What are the most common types of plastic used for jars?

A: The most common types of plastic used for jars are PET (polyethylene terephthalate), HDPE (high-density polyethylene), and polypropylene.

Q: Can plastic jars be recycled?

A: In general, yes, plastic jars can be recycled. However, it is important to check with your local recycling program to see which types of plastic are accepted.

Q: What industries commonly use plastic jars?

A: There are several industries that commonly use plastic jars, including: food and beverages, pharmaceuticals, personal care and beauty, and more.

Hubei Mingda Plastics Products Co., Ltd. is one of the most professional plastic jars manufacturers and suppliers in China, specialized in providing high quality products with low price. If you're going to wholesale cheap plastic jars in stock, welcome to get free sample from our factory. Also, customized service is available.

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