What is Injection Molding Low-Density Polyethylene?

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ICOMold makes the best custom lowdensity polyethylene injection molded parts that are durable and lightweight. Whether you are producing consumer or commercial goods, our team of experts can work with you to determine if lowdensity polyethylene is the best match for your injection molding project. Our custom plastic injection molds can last well over 100,000 cycles, increasing uniformity while lowering costs. Lowdensity polyethylene has many advantages and applications when used in the injection molding process.  

LowDensity Polyethylene (LDPE) is a form of polyethylene (PE) made using high pressure and high temperature. LDPE is a flexible type of polyethylene primarily used for packaging. It has superior moisture resistance but is not suitable for products that require weatherability or that must withstand high temperatures. LDPE has good impact strength and chemical resistance. LDPE can be used to make six-pack rings, toys and computer components. In recycled form, polyethylene can be utilized to produce trash cans, tiles, paneling and furniture. Polyethylene products account for 34% of total plastics on the market. 

Advantages of Injection Molding LowDensity Polyethylene

Lowdensity polyethylenes lower cost, numerous applications combined with the effectiveness of injection molding, results in many advantages. Some of these primary benefits of using LDPE for an injection molding project include:

  • FDA compliance
  • Transparency 
  • Lightweight 
  • Flexibility 
  • Impactresistant 
  • Good stress resistance 
  • Toughness 
  • Cost-effective 
  • Recyclable 

Recyclability is an important benefit of LDPE. Bottles, lids, caps and containers made using LDPE can all be recycled. Plastic bags used for both shopping and packaging once clean and dry are also recyclable. Many of these recycled pieces can be used to make products such as floor tiling, furniture, compost bins, trash cans, shipping envelopes and more. 

Injection Molding LDPE Specifications

Lowdensity polyethylene is a form of polyethylene that has excellent flexibility. It is transparent in color and has low UV resistance. It is somewhat chemical resistant but should not be exposed to acids and oxidation. Properties of low-density polyethylene: 

  • Density range: 917-930 kg/m3 
  • Tensile Strength: 1,200-4,000 psi 
  • Flexural Strength: 48,000 psi 
  • Melting Point: 248F 

Injection Molding LDPE Process 

To begin the injection molding process, the lowdensity polyethylene is heated until it becomes a liquid. It is then injected by pressure into a two-sided mold to create the desired shape. Once the item has cooled, it is dropped into a bin and then moved into postprocessing for finishing touches. The advantage of using injection molding for your lowdensity polyethylene part is that once the tool has been made, it can be used over and over again, producing a large volume of high-quality products. 

Applications of LowDensity Polyethylene 

Lowdensity polyethylene is a good material for products that must be disposable and recyclableLDPE is very popular and used across multiple industries for both commercial and consumer goods. Some common uses of low-density polyethylene in injection molding include: 

  • Toys 
  • Food containers 
  • Food industry products 
  • Consumer goods 
  • Electronic wire/cable insulators 
  • Housewares 
  • Industrial parts 
  • Medical products 
  • Computer parts 
  • Plastic bags 
  • Lids 
  • Caps 

Get a Quote on Injection Molding LDPE Today

ICOMold can work with you on the design and production of your lowdensity polyethylene part. Get an instant quote today.  

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