The importance of packaging for plastic products

 In today's world, plastic products have become an integral part of our lives. From household items to industrial tools, plastics are used in almost every sector. However, with the increasing use of plastic products, the importance of packaging has also increased significantly. Packaging plays a crucial role in protecting and preserving plastic products throughout the supply chain. In this blog post, we will discuss the importance of packaging for plastic products.

 

Firstly, packaging helps to protect plastic products from damage during transportation and storage. Plastic products are often fragile and can easily get damaged if not handled carefully. Proper packaging ensures that the products are protected from moisture, dust, and other external factors that can cause damage. Moreover, packaging also helps in reducing the risk of theft and tampering during transportation.

 

Secondly, packaging helps to preserve the quality of plastic products. Plastic products are susceptible to degradation over time due to exposure to light, heat, and moisture. Proper packaging helps to prevent these factors from affecting the products and ensures that they remain in good condition for a longer period. This is particularly important for plastic products that have a longer shelf life, such as medical devices and electronic components.

 

Thirdly, packaging plays a vital role in branding and marketing plastic products. The packaging design and quality can significantly impact the consumer's perception of the product. A well-designed and high-quality packaging can create a positive impression on the consumer and increase brand loyalty. Moreover, packaging can also be used as a tool for differentiation in a highly competitive market.

 

Fourthly, packaging helps to reduce the environmental impact of plastic products. Plastic waste is a significant environmental concern, and proper packaging can help to reduce the amount of plastic waste generated. Packaging that is reusable or recyclable can significantly reduce the environmental impact of plastic products. Moreover, packaging can also be designed to use fewer materials, thereby reducing the overall carbon footprint of the product.

In conclusion, packaging is an essential aspect of plastic products that should not be overlooked. Proper packaging helps to protect and preserve the quality of plastic products, enhances branding and marketing efforts, and reduces the environmental impact of plastic waste. As such, businesses that deal with plastic products should give due consideration to packaging design and quality to ensure that their products are well-protected and marketed effectively.

What is a surface printing?

 

China Plastic injection molding products processing technology

Plastic parts surface printing is a widely used technique in the manufacturing industry that involves applying graphics or text onto the surface of plastic components. This process is commonly used to enhance the aesthetics of products, provide branding or labeling information, and improve overall product visibility.

There are several methods of plastic parts surface printing, each with its own advantages and limitations. One of the most common techniques is pad printing, which involves transferring ink from a silicone pad onto the plastic surface. This method is ideal for printing on irregular or curved surfaces and can produce high-quality, detailed prints.

Another popular method is screen printing, which involves pushing ink through a fine mesh screen onto the plastic surface. Screen printing is suitable for larger print areas and can be used to achieve vibrant colors and intricate designs. However, it may not be ideal for complex shapes or small print areas.

Digital printing is another option for plastic parts surface printing. This technique involves directly printing the desired graphics or text onto the plastic surface using specialized digital printers. Digital printing offers flexibility in terms of design customization and can produce high-resolution prints. However, it may not be as cost-effective for large production runs compared to other methods.

In addition to these techniques, there are also various considerations when it comes to selecting the right ink for plastic parts surface printing. The choice of ink depends on factors such as the type of plastic material, desired print durability, and environmental requirements. Common types of inks used for plastic parts surface printing include solvent-based inks, UV-curable inks, and water-based inks.

When implementing plastic parts surface printing, it is crucial to ensure proper surface preparation to achieve optimal print quality. This typically involves cleaning the plastic surface to remove any contaminants or oils that may interfere with ink adhesion. Additionally, pre-treatment methods such as corona treatment or flame treatment may be necessary to enhance ink adhesion on certain types of plastics.

Plastic parts surface printing offers numerous benefits to manufacturers. It allows for customization and personalization of products, making them stand out in a competitive market. It also provides a cost-effective solution for branding and labeling requirements, eliminating the need for additional labels or stickers. Furthermore, surface printing can enhance product visibility and improve user experience by providing important information or instructions directly on the product.

In conclusion, plastic parts surface printing is a versatile and effective technique for enhancing the appearance and functionality of plastic components. With various printing methods and ink options available, manufacturers have the flexibility to achieve their desired print quality and design customization. By utilizing plastic parts surface printing, businesses can create visually appealing products that leave a lasting impression on consumers.

we are a professional china injection molding factory

We focus on precision mold manufacturing and injection molding manufacturing and also supply your
injection molding after process technology service.

customer quality support

 Overview:

• Parts Design 

• (client may provide completed 3D files)
  The tooling process begins with a completed and checked part design. CNMOULDING can optionally optimize your design before tooling to lower your costs and ensure that your design will work well.
• Parts Prototyping (if necessary)
  If you would like to validate your parts design with a machined piece that you can see and feel, Cnmoulding can use Computer Numerical Control (CNC) techniques to prototype your parts.

• Tool Design

• At this stage the tool is designed, using the information from your completed tools and molds design

• Tool Check and Mold Flow Analysis

• The tool design is validated for correctness.
• Tool Fabrication (including use of Computerized Numerical Control (CNC) and Electrical Discharge Machining (EDM) technologies)
  The tool is precisely fabricated according to the validated design.

• First Shots To Client

• Once the injection molds are made, the first test shot samples will be sent out soon after via an international courier. Once sent, these usually take around 2-5 days to arrive.

• Tool Modifications and Texturing

• At this stage, Cnmoulding completes the tool and makes any required changes to bring the tool into the approved spec. Changes made to bring the tool to spec (specifically excluding design changes, which are always charged) are made free of charge.
  At this stage, texturing also takes place, which is normally the last stage before mass production.

• Mass Production Run or Export

• At this stage, parts are produced and delivered to the customer, or the tool is released for export use.

Technical Topics:

Molding begins with tooling. No matter how good the design, if the tooling is not up to the task, the quality of the parts will suffer.

The Molding Machine

Achieving consistent dimensions and quality requires up-to-date molding machines, operating to specifications, with precise position and pressure control capabilities. The basic construction of a molding machine is fairly straightforward.

Material is fed in through a hopper into a screw and barrel where it is heated to a molten condition. The melt is then injected under high pressure into the mold while the mold is held closed with the high force of a toggle or hydraulic ram. The goal is to melt resin in a very uniform and repeatable fashion, inject it into the mold under very precise and repeatable pressure conditions, and hold the steel temperatures in the entire flow system very stable. After the molten plastic is solidified, the mold is opened and the gear is ejected. It then continues to cool in the open air.

There are many handling and pre-processing requirements for injection molding materials. Engineering polymers quite often must be dried to a specific dew point before use. When parts are made, runners are formed that some shops regrind and put back in the melt. This quite often raises more quality concerns than the slight savings in material expense may justify, and CPIM uses only virgin material.

Injection

The method of injecting the plastic into the mold is very important. In most cases, the plastic should be injected under high pressure very quickly to maintain the good characteristics of the melt completely during the injection. As the mold cavity fills, the injection pressure should be held at the same high value and the speed of injection slowed to maintain that pressure. At the moment when the part is filled, and the molding machine switches over from injection to a pack & hold condition, the plastic melt is held at the same high pressure. This pressure is held for as long as it takes to freeze the gates and achieve the highest weight possible for the molded part. 

Dimensional Inspection in medical Injection Molding

 We produce medical stents for our international clients. However, due to the use of different tools, there have been deviations in the dimensions of the stents, which do not meet the required specifications. As they are current 2.54 mm in diameter and client need to be 2.44 mm in diamete.But it is not the wrong size, but the deviation caused by different measuring tools. After many measurements, it is proved that this position can not be measured with calipers, because the edge of the hole is sharp, and the strength is slightly larger, you can measure the size of the hole, and the best way is to measure it with a gaugeical Injection Molding

Dimensional Inspection in medical Injection Molding

It is crucial to understand that these are special products and therefore require special testing methods to ensure their quality and compliance with international standards.

Dimensional Inspection in medical Injection Molding

The use of different tools has resulted in variations in the dimensions of the medical stents. This deviation from the required specifications is a matter of concern as it can impact the effectiveness and safety of the stents when used in medical procedures. It is imperative that we address this issue promptly and implement measures to rectify the situation.

In order to ensure that the medical stents meet the necessary standards, it is essential to employ special testing methods that are specifically tailored to the unique characteristics of these products. These testing methods should take into consideration the material composition, structural design, and intended application of the stents. By utilizing specialized testing techniques, we can accurately assess the dimensional accuracy, mechanical properties, and biocompatibility of the stents.

Additionally, we must prioritize the implementation of stringent quality control measures throughout the production process to prevent any deviations in the dimensions of the medical stents. This may involve standardizing the use of specific tools, conducting regular inspections, and implementing corrective actions to address any discrepancies.

By addressing the issue of dimension discrepancies in our medical stents and implementing specialized testing methods, we can uphold our commitment to delivering high-quality products that meet the stringent requirements of our international clients. This proactive approach will not only safeguard the reputation of our company but also contribute to advancing healthcare outcomes globally.

In conclusion, the production of medical stents for international clients requires meticulous attention to detail and adherence to specialized testing methods. By acknowledging the impact of tool variations on dimensional accuracy and taking proactive measures to address this issue, we can ensure that our medical stents meet international quality standards and deliver optimal performance in clinical applications.

Electric car pipe joint

 The pipe joint is the connecting piece between the oil pipe and the oil pipe, the oil pipe and the hydraulic components. It needs to meet the requirements of firm connection, reliable sealing, small size, large flow capacity, convenient assembly and good process performance. In the hydraulic system, metal pipes with an outer diameter greater than 50 mm are generally connected by flanges, and oil pipes with small diameters are connected by pipe joints.

car pipe joint

According to the form of the connected pipeline, pipe joints are divided into hard pipe joints, hose joints, quick joints and rotary joints.

Hydraulic quick couplings, also known as quick couplings, are mechanical devices that allow quick, easy, and safe reconnection and disconnection of fluid lines without the use of any tools. Widely used in hydraulic systems, it enables liquids to be transported efficiently and greatly improves work efficiency.

car pipe joint

As an indispensable part of various automobiles, electrical appliances, mechanical equipment and daily necessities, pipe fittings and joints that play a role in connection and fastening have penetrated into every corner of our lives. The functional plastic pipe fittings that complement the traditional metal pipe fittings are more and more widely used by people because of their light texture, strong applicability, corrosion resistance, strong expansibility, and good insulation.

car pipe joint

As the supplier of China’s largest electric automotive pipe connectors company, another area that we are very good at is to participate in the design and development of customers, and provide customers with overall solutions for fastening and electric car pipe joint systems with our expertise and experience. Careful, comprehensive and strong sense of responsibility have enabled us to achieve success in this practice, and have won the trust and recognition of our customers. We regard the trust and recognition of our customers as the most valuable wealth. It gives us the impetus to continue our efforts, spurs us to pursue higher and better pursuits, and grows and progresses together with our customers.

Better functions, better performance, ensuring product reusability to reduce waste, and improving work efficiency to help customers reduce costs, these are our constant pursuits.

How do you calculate shot size in an injection moulding machine?

 Calculating shot size in an injection moulding machine is a crucial step in the manufacturing process. The shot size determines the amount of material that is injected into the mould, and it is essential to get it right to ensure the final product meets the required specifications.

If it is Hot runner, No of cavities (layman's words number of parts to be filled) multiplied by each part weight is Total shot weight or Shot Size.

if it is a cold runner, No cavities multiplied by each part weight added to Runner weight is Shot weight or Shot Size.

Remember the shot size mentioned by the Machine manufacturer for PS. If your material is other than PS, then you have to identify the specific gravity of the material to be processed and then multiply it with the Total shot weight of the machine mentioned in the catalog.

 

To calculate the shot size, you need to consider several factors. These include the size of the mould, the material being used, and the desired part weight. Here's how to calculate the shot size step by step:

1. Determine the size of the mould

The first step is to determine the size of the mould that will be used in the injection moulding machine. This will give you an idea of the volume of material that will be needed to fill the mould.

2. Calculate the volume of the mould

Once you know the size of the mould, you can calculate its volume. This is done by multiplying the length, width, and height of the mould. For example, if your mould is 10cm x 10cm x 10cm, the volume would be 1000 cubic centimeters (cc).

3. Determine the material being used

The next step is to determine the material that will be used in the injection moulding machine. Different materials have different densities, which means they require different volumes to achieve the same weight.

4. Calculate the density of the material

Once you know the material being used, you can calculate its density. This is done by dividing its mass by its volume. The density is usually expressed in grams per cubic centimeter (g/cc).

5. Determine the desired part weight

The final step is to determine the desired weight of the finished part. This will depend on the specifications of the product being manufactured.

6. Calculate the shot size

With all of this information, you can now calculate the shot size. The shot size is calculated by multiplying the volume of the mould by the density of the material and the desired part weight. The formula is as follows:

Shot size = (mould volume) x (material density) x (desired part weight)

For example, if your mould has a volume of 1000cc, the material being used has a density of 1.2g/cc, and the desired part weight is 50 grams, the shot size would be:

Shot size = 1000cc x 1.2g/cc x 50g = 60,000 cubic millimeters (mm3)

In conclusion, calculating shot size in an injection moulding machine is a critical step in the manufacturing process. By following these steps, you can ensure that the final product meets the required specifications and is of high quality.

Injection mold steel

 

Injection Mold Steel: The Key to High-Quality and Durable Molded Products

Injection molding is a widely used manufacturing process for producing plastic parts and products of various shapes and sizes. The process involves injecting molten plastic into a mold cavity, which is then cooled and solidified to form the desired shape. However, the quality and durability of the molded products depend largely on the quality of the injection mold steel used.

One of the key characteristics of injection mold steel is its ability to maintain its shape and integrity under extreme conditions. This is essential for ensuring that the finished products meet the required specifications and quality standards. The steel must also have excellent wear resistance to withstand the abrasive nature of the injection molding process, as well as good polishability to achieve the desired surface finish of the molded parts.

There are several different types of injection mold steel available, each with its own unique properties and advantages. Some of the most commonly used types include P20, H13, S7, and 420 stainless steel. P20 steel, for example, is known for its good machinability and weldability, making it a popular choice for many injection molding applications. H13 steel, on the other hand, offers high heat resistance and toughness, making it suitable for demanding molding operations.

When selecting the right injection mold steel for a specific application, factors such as the type of plastic material being used, the expected production volume, and the complexity of the part design must be taken into consideration. It is also important to consider the overall cost-effectiveness of the chosen steel, taking into account factors such as tool life, maintenance requirements, and overall production efficiency.

In addition to selecting the appropriate type of injection mold steel, proper heat treatment and surface finishing are also critical to ensure optimal performance and longevity of the molds. Heat treatment processes such as quenching and tempering can enhance the hardness and strength of the steel, while surface treatments like nitriding or PVD coating can further improve wear resistance and corrosion protection.

Overall, injection mold steel plays a vital role in the success of injection molding operations. By carefully selecting the right type of steel and implementing proper heat treatment and surface finishing techniques, manufacturers can ensure the production of high-quality plastic parts with precision and efficiency. As technology continues to advance, new developments in injection mold steel are likely to further improve the performance and capabilities of injection molding processes.