Injection Moulding Plastic Pellets

Why pellet size and shape are important uniformity is needed to help ensure melt quality.

Injection moulding plastic pellets.

Variation in pellet size and geometry influences solid bed breakup and is the source of partially melted pellets in your parts. Plastic resins and pellets for extrusion injection molding and compression molding are available from professional plastics. Common ones are acetal delrin hard polypropylene pp medium hard thermoplastic polyolefins tpo medium polyethylene pe medium soft thermoplastic elastomers pe soft. They are also very easy to spill when they get into the factory where pellets can easily find their way outside or into drains.

With over 85 thousand types of injection molding plastic materials to choose from you can only imagine how overwhelming it can be for product designers entrepreneurs and others alike to pick. When plastic pellets are being transported from the factories to an injection moulding plant they are liable to be spilt from trucks trains and cargo containers. Mixed color mdpe pellet 1 4 mfi. This article is meant to help those who have little to no understanding of drying plastic resins.

This is the first article in a new series that will examine the injection molding process by breaking down the path a plastic pellet takes as it is transformed from pellet 2 part. There are many different types of plastic resins but they can all be split into two basic categories. It covers what every moldmaker should know about raw materials including the fundamentals of viscosity curves melt flow index melt flow rate shear and more. Professional plastics is the master distributor of vestakeep brand peek polyetheretherketone a high performance engineering plastics used extensively in medical semiconductor and aerospace materials.

Plastic resin rotational molding resin services polymer testing services plastic recycling plastic compounding pulverizing. Mixed color pp mixed color pellets 6 20 mfi. These polypropylene pellets often come from bottle caps. Mixed color medium density polyethylene pellets are great for pipe plastic lumber furniture decking compression molding pipe profiles and more.

This last method involves the use of the plastic injection molding machine itself as dry pigment powder is mixed directly with plastic pellets in the machine s hopper when you achieve the perfect ratio of 2 by volume then the mixing process can begin. Sell your scrap 713 433 1898.