218WJ LLDPE High-Density Polyethylene Resin for Injection Molding

1. Product type

name: 218WJ LLDPE

Type: Linear Low Density Polyethylene (LLDPE)

2. Main characteristics

Density: typically 0.918-0.922 g/cm ³

Melt Flow Rate (MFR): Usually around 1.0 g/10 min (190 ° C, 2.16 kg)

Tensile strength: high

Impact resistance: excellent

Tear resistance: good

Transparency: Good

3. Application Fields

Film: Suitable for various film applications, such as packaging film, agricultural film, stretch film, etc.

Packaging: Used for food packaging, industrial packaging, etc.

Other: It can also be used for processing methods such as injection molding and blow molding.

Features

Good tensile properties: It has high tensile strength and tear resistance. In injection molded products, it can make the products withstand certain tensile forces and external forces without breaking easily. For example, when manufacturing plastic boxes, plastic barrels and other products, it can ensure that the products maintain structural integrity during transportation and use.

Excellent toughness: LLDPE 218WJ has good toughness, which makes injection molded products have good impact resistance. Even in low temperature environments, it can maintain a certain flexibility and reduce damage caused by collision or impact. It is suitable for manufacturing plastic products that need to be used in different environmental conditions, such as outdoor toys.

Good processing fluidity: During the injection molding process, the resin has good fluidity and can be quickly and evenly filled in the mold, which helps to produce plastic products with complex shapes and high precision. This makes it adaptable to the requirements of various injection molds and improves production efficiency and product quality.

Chemical corrosion resistance: It has a certain tolerance to many chemicals, such as acids, alkalis, salts, etc. In injection molded container products, it can be used to hold some chemically corrosive liquids or solids to ensure that the products are not corroded by chemicals during storage and use, and to extend the service life of the products.

Environmental stress cracking resistance: It has good environmental stress cracking resistance and can resist cracking caused by environmental factors (such as temperature changes, humidity, mechanical stress, etc.) during use. It is suitable for plastic products exposed to the outdoors or special environments for a long time.

Application

Plastic containers: It is widely used in the manufacture of various plastic containers, such as plastic barrels, plastic cans, plastic bottles, etc. Its good toughness and chemical corrosion resistance enable these containers to safely store and transport various liquid and solid products, including chemical raw materials, food, beverages, etc.

Plastic toys: Due to its good toughness and safety, it is often used in the production of plastic toys. Toys of various shapes and colors can be injection molded, while ensuring that the toys are not easily damaged during play, and are non-toxic and harmless, meeting the safety standards of toy products.

Plastic household items: It is used to manufacture plastic household items, such as plastic storage boxes, plastic tables and chairs, plastic flower pots, etc. Its excellent tensile properties and resistance to environmental stress cracking give these household items a long service life. At the same time, good processing fluidity also facilitates the production of various beautiful and practical products.

Industrial parts: In the industrial field, some parts can be injection molded, such as plastic gaskets, plastic connectors, etc. Its chemical corrosion resistance and good mechanical properties can meet the requirements of parts in industrial production and improve the efficiency and quality of industrial production.

Precautions

Processing temperature control: During the injection molding process, the processing temperature needs to be strictly controlled. Too high temperature may cause the resin to decompose, produce harmful substances, and affect the quality of the product; too low temperature will make the fluidity of the resin worse, resulting in difficulty in product molding, lack of material, and uneven surface.

Generally speaking, the processing temperature of LLDPE 218WJ is between 180℃ and 230℃, and the specific temperature needs to be adjusted according to the equipment and product requirements.

Mold design: Since LLDPE 218WJ has a certain shrinkage rate, this needs to be taken into account when designing the mold, and the size and shape of the mold should be reasonably designed to ensure the dimensional accuracy of the injection molded product. At the same time, the surface finish of the mold will also affect the surface quality of the product, and the smoothness of the mold surface needs to be ensured.

Storage conditions: It should be stored in a dry, well-ventilated warehouse, avoiding direct sunlight and moisture. The storage temperature should generally be controlled between 5℃ - 35℃. Too high or too low temperature may affect the performance of the resin. In addition, avoid contact between the resin and other chemicals to prevent chemical reactions.

Environmental protection requirements: Although LLDPE is a recyclable material, environmental protection issues still need to be paid attention to during production and use. Minimize the generation of waste materials, and recycle and treat waste materials reasonably to reduce the impact on the environment.

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