Plastic can production machine

Plastics are the most common materials for the production of high-use parts and products, from consumer products to medical devices. Plastics are a versatile class of materials with thousands of polymer options, each with their own unique mechanical properties. In this article, you will get acquainted with various methods and devices for producing plastic cans and other plastic products, and if you intend to start working in this field, you will get the necessary information.

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How are plastic parts made?

A variety of plastic product manufacturing methods have been developed to cover a wide range of applications, part geometries and types of plastics. For any designer and engineer working in product development, it’s important to be familiar with today’s manufacturing options and the new developments that will shape how tomorrow’s parts will be made.

This article provides an overview of the most common manufacturing processes for producing plastic parts and provides guidelines to help you choose the best option for your application.

How to choose from various methods of producing plastic products

Consider the following factors when choosing a manufacturing process for your product:

Form: Do your parts have complex structural features or have to withstand pressure? Depending on the geometry of a design, manufacturing options may be limited or may require significant design for manufacturing optimization (DFM) to make them cost-effective to manufacture.

Volume/Cost Ratio: What is the total or annual volume of parts you intend to produce? Some manufacturing processes have high tooling and setup costs, but produce parts that are inexpensive on a per-piece basis. In contrast, low-volume manufacturing processes have low startup costs, but because of slower cycle times, less automation, and manual labor, the cost per part remains constant or declines slightly as volume increases.

Timing: How quickly do you need parts or finished goods? Some processes create the first parts within 24 hours, while tooling and commissioning for some high-volume production processes take months.

Material: What stresses and pressures should your product withstand? The optimal material for a given application is determined by a number of factors. Cost must be balanced with functional and aesthetic requirements. Consider the ideal features for your specific application and compare them to the options available in a given manufacturing process.

All kinds of plastics for the production of plastic cans

Plastics come in thousands of varieties with various base chemicals, derivatives and additives formulated to cover a wide range of functional and aesthetic properties.

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To simplify the process of finding the best materials for a particular part or product, we first look at the two main types of plastics: thermoplastics and thermosets.

Thermoplastics

Thermoplastics are the most common type of plastic that are used in various methods of producing plastic products. The main feature that distinguishes them from thermosets is their ability to undergo multiple freeze-thaw cycles without significant degradation. Thermoplastics are usually supplied as pellets or small sheets that are heated and formed into the desired shape using various manufacturing processes. The process is completely reversible, as no chemical bonding takes place, which enables thermoplastics to be recycled or melted and reused.

Common types of thermoplastic materials:

Acrylic (PMMA)

Acrylonitrile Butadiene Styrene (ABS)

Polyamide (PA)

Polylactic acid (PLA)

Polycarbonate (PC)

Polyether ether ketone (PEEK)

Polyethylene (PE)

Polypropylene (PP)

Polyvinyl chloride (PVC)

Thermoset plastics

Unlike thermoplastics, thermoset plastics (also called thermosets) remain permanently solid after curing. Polymers in thermosetting materials are cross-linked during a curing process induced by appropriate heat, light, or radiation. This curing process forms an irreversible chemical bond. Thermoset plastics decompose when heated rather than melt and do not reform when cooled. It is not possible to recycle the thermostat or return the materials to its original materials.

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Common types of thermoset materials:

Cyanate ester

Epoxy

polyester

Polyurethane

Silicon

Vulcanized rubber

Types of production methods of plastic products (production of plastic cans and bottles)

3D printing

CNC machining

Polymer casting

Rotational molding

Vacuum forming

plastic injection

extrusion

Polymer casting (various methods of producing plastic products)

In polymer casting, a liquid resin or reactive rubber fills the mold, which chemically reacts and solidifies. Common polymers for casting include polyurethane, epoxy, silicone, and acrylic.

Machine for producing plastic products

Manufacturing process by polymer casting

Template preparation

Casting

Cooking

Demolition

trimming

Flexible molds made of latex rubber or room temperature vulcanized (RTV) silicone rubber are inexpensive compared to hard tools, but can only make a limited number of castings (about 25 to 100) as the urethanes react chemically. Produce epoxies, polyester, etc. Acrylic destroys the surface of the mold.

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