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HUIWEN Plastic Product Material Classification and Application
Plastic Product Material Classification and Application Plastic products are everyday items we use every day. From telephones, fax machines, computers, mobile phones, bowls and chopsticks, to bottles and jars of all sizes, you come into contact with them to some extent. However, you often don't know what materials they are made of. Without classification, plastic resources cannot be recycled and reused, which is a waste of resources. Generally speaking, because plastics are easy to recycle,...
Specialized Terminology in the Plastic Injection Molding Industry [Worth Saving]
Plastic Processing Terminology * **Weld Mark/Watermark/Line/Stretch:** A mark caused by incomplete fusion at the interface of two material streams during injection molding. * **Shrinkage Mark/Shrinkage:** A depression on the surface of a plastic part that occurs when the part cools and solidifies within the mold cavity due to uneven wall thickness, insufficient injection pressure, or insufficient cooling time. * **Airflow Marks:** Material flow marks on the surface of a plastic part...
Principles of Plastic Injection Molding Mold Production
Plastic products are widely used across various industries. Injection molds are an indispensable tool in plastic product manufacturing. The mold determines the product's structure and dimensions. Therefore, to produce high-quality plastic products, it's essential to understand the principles of plastic injection molding mold production, summarized as follows: 1. When designing each injection-molded product, first determine its mold opening direction and parting line to minimize the impact...
Plastic parts Injection Molding Parts - Manufacturing Process
Plastic injection molding refers to a business where the client provides drawings or physical samples, and the injection molding factory manufactures the injection molded products according to the client's requirements, charging mold fees and processing fees. Injection molding is a knowledge-intensive, highly technical, and practical industry. It requires not only a professional production team but also adequate hardware facilities such as production equipment. Compared to other industries,...
Can small appliance casings shells be made in multiple colors?
I saw a plastic product in the sample cabinet with two different colors. Engineer Huang explained that this is a classic two-color injection molding process, where two different materials are injected into the same mold to create a product formed from two materials. The two materials may differ in color or hardness, which improves the product's appearance and assembly performance. So, can small appliance casings be made in multiple colors? First, let's discuss the difference between...
Injection Molding Manufacturers Tell You How to Get a Quote for Injection Molding Processing
Many people want to process injection molded parts and find quotes from various manufacturers online. However, as a purchasing agent, you don't know how the price is calculated and can't control costs effectively. Aside from differences in raw materials, there are generally universal methods. HUIWEN Injection Molding Manufacturers tells you how to get a quote for injection molding processing. 1) Unit Price Unit Price = Material Price + Processing Fee Material Fee Unit Price = (Actual Weight...
How do injection molded parts manufacturers solve product shrinkage problems?
Shrinkage problems in plastic parts (surface sink marks and internal cavities) are defects caused by insufficient molten plastic replenishment during the cooling of thicker areas. We often encounter this problem. Do you know how injection molded parts manufacturers solve product shrinkage issues? HUIWEN Plastics will explain. Among commonly used raw materials, PC material is notoriously difficult to solve due to its rapid cooling rate, and PP material also faces challenges with sink marks...
Selection of Raw Materials for Medical Plastic Injection Molding Parts
In recent years, the use of plastic injection molded parts in the medical field has increased significantly. Because these parts come into contact with medications or the human body, the basic requirements for medical plastics are chemical stability and biocompatibility. So, how should one choose plastic raw materials when customizing medical plastic injection molded parts? HUIWEN Plastics lists the following points: 1. Polyvinyl Chloride (PVC) PVC is one of the world's most produced...
Plastic Blow Molding Machine Injection Mold Processing Principle
In recent years, the application of plastic blow molding machines and injection molds has become increasingly widespread. Do you know the processing principle of blow molding machine injection molds? Below, HUIWEN Plastics will give you a brief introduction. During the production process of plastic blow molding machine injection molds, longitudinal thickness uniformity can be controlled by extrusion stability and traction speed. Transverse thickness uniformity of the film usually depends...
Profitability Trends in the Cosmetic Injection Packaging Industry
The profit levels of cosmetic injection packaging companies are influenced by several factors. Firstly, they are affected by upstream raw material prices, R&D and innovation capabilities, production technology levels, and product iteration speed. Secondly, they vary depending on the target customer group. Companies producing higher-end cosmetic packaging containers generally enjoy higher profit margins due to factors such as product design, manufacturing processes, and downstream...
What processes can be used for cosmetic injection molding packaging?
When choosing cosmetics, consumers are often attracted by the product packaging. To enhance their market competitiveness, manufacturers focus on the surface finish of cosmetic packaging. Nowadays, the surface finishes for cosmetic packaging are incredibly diverse, including common finishes like gradient colors, bright gold, matte, silver plating, and textured surfaces. These processes enhance the color, appearance, and feel of cosmetic injection molding packaging, making it more textured...
Quality Requirements and Acceptance Rules for Injection Molded Plastic Cosmetic Bottle Manufacturers
Cosmetic packaging plastic bottles consist of two parts: the plastic bottle and the plastic cap. The plastic cap can be composed of an outer cap and an inner cap (gasket, stopper). Plastic bottles can be divided into cream bottles and caps, lip gloss bottles and caps, and lotion bottles (jars) and caps. To test whether the product meets the standards, the following tests are conducted: product size, weight, capacity, tightness, drop test, adhesion test, cap compatibility, and cap opening...
Plastic Injection Mold Manufacturing Process
The plastic injection mold manufacturing process generally includes: customer customization, mold design, mold manufacturing, mold inspection and trial molding, mold modification and repair, and mold maintenance. These will be explained in detail below. I. Customer Customization The production of plastic molds begins with the customer's engineers providing product drawings to the mold manufacturer. The manufacturer then collects, analyzes, and processes the product data based on the...
How to Deal with Color Variation in Injection Molded Products
Color variation is a common defect in injection molding, severely impacting the product's appearance and potentially even causing losses. There are many factors contributing to color variation, including the choice of plastic raw materials, masterbatch mixing, injection molding process, mold design, and operator control. Therefore, color variation control is generally considered one of the most challenging techniques to master in injection molding. Huiwen Plastic Mold Manufacturer will now...
Lip Gloss Tube Injection Mold Processing
There are many public molds for cosmetic packaging on the market today, but creating unique and innovative products requires customized molds. This allows you to design the desired product and secure a strong market. Let's take a look at the specific process for lip gloss tube injection mold processing. Injection molding is a common method for manufacturing industrial products. This process involves processing rubber and plastic to achieve the desired shape. There are several types of...
Where can I find manufacturers of thermosetting plastic products?
Injection molding is a process used in mass production, primarily in the industrial sector. The injection molding process involves injecting molten material into a mold cavity under high pressure, where it cools and solidifies to produce a molded product. Based on molding characteristics, molds can be categorized as thermosetting plastic molds and thermoplastic molds. So, where can I find manufacturers of thermosetting plastics? Thermosetting plastics are typically sold as a liquid...
Application of PETG in Cosmetic Plastic Packaging Injection Molding Factories
Application of PETG in Cosmetic Plastic Packaging Injection Molding Factories The most commonly used materials in cosmetic injection molding factories are PETG, AS, and ABS. The HUIWEN Plastics editor will focus on the application of PETG in cosmetic injection molding factories. 1. What is PETG and Its Characteristics PETG is a transparent plastic and an amorphous copolyester. Its common comonomer is 1,4-cyclohexanedimethanol (CHDM). It is a polycondensation product of terephthalic acid...
plastic parts ，Mold Design Experience at Injection Molding Manufacturers
The quality of mold design accounts for over 80% of mold quality. Factors such as mold precision, service life, manufacturing cycle time, mold standardization, and the company's level of innovation determine mold quality. HUIWEN Injection Molding Manufacturers is sharing its mold design experience, hoping to provide valuable insights. An excellent mold design is one that meets customer requirements while minimizing costs, complexity, and time. This requires designers to carefully analyze...
Plastic Mold Polishing Considerations at Injection Molding Manufacturers
Polishing plastic molds for injection molds has two purposes: one is to increase the mold's finish, resulting in a smooth, beautiful, and aesthetically pleasing surface. The other is to facilitate mold release, preventing plastic from sticking to the mold and becoming stuck. Huiwen Plastics will share some tips for polishing molds at injection mold manufacturers: 1. When machining a new mold cavity, first inspect the workpiece surface and clean it with kerosene to prevent contaminants from...
How can we control injection mold processing costs ？ plastic parts production
Some applications require mold steel with high hardness and high wear resistance to enhance parting line durability, while others require mold steel with higher toughness to resist mechanical fatigue. Therefore, the material selection, mold process, and factory management before injection mold production all affect injection mold processing costs. So, how can we control injection mold processing costs during production? To summarize, here are three points: 1. Steel Selection Some...
Why are inserts needed in injection mold manufacturing? plastic parts molding processing
Mold inserts are widely used in injection mold manufacturing, primarily in front molds, back molds, sliders, and lifters. So why are inserts needed in injection mold manufacturing, and what is their purpose? Let's take a closer look. 1. Saving Materials in Injection Mold Manufacturing As we all know, injection molds use relatively regular blocks of steel with fixed shapes to hold the material. However, the material of the front and back molds is determined by the Z-height. Whether in the...
Cosmetic Plastic Cases and Powder Compacts Injection Mold Factory Manufacturing Technology Solution
Air cushions, as a cosmetic product, are highly sought after by beauty enthusiasts, and attractive packaging is a key attraction. To achieve attractive packaging, we first need to understand market demand and listen to customer feedback. Finally, we must find a specialized injection mold factory specializing in powder compacts to mold the product according to our design. Our company recently injection molded an air cushion compact. This compact consists of a top cover, a powder cover, a...
What are the requirements for plastic mold processing when choosing a factory?
Plastic mold processing has the characteristics of high precision requirements, complex processing surface shapes, and multiple processing steps. In order to ensure that the subsequent goods can be mass-produced normally, what requirements must we meet in plastic mold processing? What are the requirements for factory selection? Let's talk about it below. I. The characteristics of plastic mold processing are as follows: (1) High precision requirements for plastic mold processing A mold...
Learn about the quote process for plastic molds for plastic parts. Don't be fooled!
A customer in Beijing contacted us on the HUIWEN Plastics official website, inquiring about the price of a mold for a medical LED pen. A plastic mold quote requires an evaluation of multiple factors, including material costs and processing fees. Many people are unaware of the quote process and are prone to being scammed by unscrupulous suppliers. Below, our HUIWEN Plastics editor will explain the quote process to help you avoid pitfalls. I. Plastic Mold Quotation Methods 1. Empirical...
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