Mold design and manufacturing

In the field of Mold design and manufacturing, polypropylene (PP) has become one of the world's most widely used and widely produced general-purpose plastics due to its excellent chemical stability, lightweight characteristics, and low-cost advantages. PP injection molding raw materials specifically refer to polypropylene materials that have undergone formula optimization (such as adding antioxidants, weather resistant agents, toughening agents, etc.), exist in particle form, and can be directly used in injection molding processes. It not only retains the core advantages of PP substrate such as low density, chemical corrosion resistance, and easy processing, but also adapts to the differentiated mechanical and environmental performance requirements of different scenarios through functional modification, covering a wide range of injection molding fields such as packaging, automotive, home appliances, and daily necessities.

Mold design and manufacturing, also known as polypropylene injection molding raw materials, are made of polypropylene resin generated by the polymerization reaction of propylene monomers as the substrate. Functional additives (such as antioxidants, light stabilizers, toughening agents, fillers, colorants, etc.) are added according to the performance requirements of injection molded products. Mold design and manufacturing can be directly put into injection molding machines and processed into various PP injection molded products through heating and melting, high-pressure injection, cooling and solidification steps.

P&M Mold design and manufacturing Introduction

1. Raw material pretreatment: Simplify as needed to ensure cleanliness

The pretreatment process of PP injection molding raw materials is much simpler than other plastics, with the core being "removing impurities+drying as needed".

2. Injection molding machine selection and parameter setting: matching raw material properties

Selecting an appropriate injection molding machine and setting core process parameters based on the MFR of PP injection molding raw materials and product structure is the key to ensuring molding quality.

3. Melt injection: controlling flow and filling

PP injection molding raw materials undergo a "preheating melting mixing injection" process in the injection molding machine barrel, ensuring that the melt is uniform and stable.

4. Pressure holding cooling: compensates for shrinkage and stabilizes the shape.

Pressure holding and cooling directly affect the dimensional accuracy and internal stress of the product, and require precise control.

5. Demoulding and retrieval: protect the product from damage

PP products have excellent demolding properties, but attention should be paid to the way they are taken to prevent surface scratches or deformation:

6. Post processing and testing: Optimize performance to ensure compliance

The post-processing process of PP injection molded products is simple, with the core being "defect removal+performance verification".

P&M Mold design and manufacturing(Specification)

P&M Mold design and manufacturing Feature And Application

PP injection molding raw materials, with their comprehensive advantages of "customizable performance, low cost, and convenient processing", have penetrated into almost all injection molding fields such as packaging, automobiles, household appliances, daily necessities, and industry, and are one of the most widely used categories in general plastics:

1. Packaging field: lightweight and hygienic preferred

Packaging is the largest application area for PP injection molding raw materials, accounting for about 30% -40%. The core requirements are "lightweight, hygienic, and easy to form":

Food packaging: used for disposable meal boxes, food containers (such as fresh-keeping boxes), bottle caps (such as mineral water bottle caps, beverage bottle caps), yogurt cups. Food grade PP has the advantages of no odor, boiling water resistance, and no harmful substance migration, and its lightweight characteristics reduce transportation costs;

Industrial packaging: used for logistics pallets, turnover boxes, and express packaging boxes, using reinforced or toughened modified PP, with high rigidity (load-bearing capacity ≥ 50kg) and impact resistance (no damage after falling 1.5m), and can be reused;

Pharmaceutical packaging: used for drug bottle caps, syringe push rods, and infusion set components, using pharmaceutical grade PP (compliant with USP Class VI standards), which has the advantages of sterilization resistance (121 ℃ high temperature sterilization) and strong chemical stability, ensuring drug safety.

2. Automotive field: Core materials for lightweight and weather resistance

The automotive industry is the second largest application area for PP injection molding materials, accounting for about 20% -25%, with core requirements of "lightweight, weather resistance, and impact resistance".

3. Home appliance field: High cost-effective appearance and functional components

The demand for PP injection molding materials in the home appliance industry is concentrated on "appearance texture, temperature resistance, and low cost", accounting for about 15% -20%.

4. Daily necessities and industrial sector: full scene adaptation

The application of PP injection molding raw materials in daily necessities and industrial fields covers a wide range, and the core requirements are "durability, easy processing, and low cost":

Daily necessities: used for trash cans, mop poles, plastic chairs, toys, using toughened modified PP, which has the advantages of impact resistance (no damage after falling 1m), aging resistance (no cracking for 3 years outdoors), and customizable colors, suitable for home scenes;

Industrial components: used for water pump impellers, valves, pipeline fittings, and instrument casings, using reinforced PP (glass fiber content of 20% -40%) or chemical resistant PP, with the advantages of high rigidity (bending strength ≥ 50MPa), acid and alkali corrosion resistance, and lower cost than metals and engineering plastics;

In the agricultural field, it is used for agricultural films, irrigation pipelines, and seedling trays. It uses weather resistant PP (with added light stabilizers), which has the advantages of outdoor aging resistance (3 years without degradation) and pesticide corrosion resistance, and its lightweight characteristics reduce agricultural production inputs.

Customization Process

Factory&About US

NingBo Plastic Metal Product Co.,Ltd (P&M) is located in Yuyao, the so-called Mould City, Plastic Kingdom, in the southern tip of Hangzhou Bay Bridge,north of Shanghai, the east of Ningbo Port,tight double line of State Road 329 on land, sea and air trafic into a network to facilitate transport.

By the abundant technical strength,scientific management methods and good after-sales service, product deeply trusted and welcomed by customers from all over the world. P&M holds improved system of development and production, to achieve mold design, plastic products manufacturing and automatic production. Our main products is design and manufacturing of plastic mold, plastic product, metal product. 90% products of our enterprise are exported to America, Europe, Germany, Japan, Australia, etc. For many years, the company has been committed to the research of raw materials. The company has its own trademark and dozens of patents, providing more convenient technical support for mold making and product production. P&M started domestic business from 2008,named Shundi Mould Factory. And opened the international market from 2014. We always adhere to the principles of quality first and time first. While providing customers with the highest quality products, try to maximize the production efficiency and shorten production time. We are proud to tell every customer that our company has not lost any customer since its establishment.If there is a problem with the product, we will seek a solution actively and take responsibility to the end.

P&M adheres to market-oriented to the quanlity of life and focus on quality service and continuous development of new products,determined to establish a better corporate image,and our friends at home and abroad to carry a wide range of business exchanges and cooperation, create brilliant.

Packing

Packaging according to your needs

1. By air ,it takes 3-7 days for delivery.

The goods can be shipped by DHL , Fedex , UPS .

2. By sea ,the delivery time is based on your port.

To South East Asian Countries takes about 5-12 days.

To Middle east countries takes about 18-25 days.

To European countries takes about 20-28 days.

To American countries takes about 28-35 days.

To Australia takes about 10-15 days.

To African countries takes about 30-35 days.

P&M Bike parts, centered around children, balances safety, health, and fun, aiming to add a bright color to children's beautiful childhood. We look forward to working together with you to serve our children.

The path of a child's growth is paved with bricks and tiles.

FAQ

1.Who are we?

We are based in Zhejiang, China, start from 2014,sell to North America(30.00%),Southern Europe(10.00%),Northern Europe(10.00%),Central America(10.00%),Western Europe(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%). There are total about 51-100 people in our office.

2.How can we guarantee quality?

Always a pre-production sample before mass production;

Always final Inspection before shipment;

3.What can you buy from us?

Mould, Plastic Product, Metal Product, Dental Product, CNC machining.

4.Why should you buy from us not from other suppliers?

We main do all kinds of 3d design, 3d printing and plastic metal molds tooling and products. We have our own engineer and factory. One-stop supply: 3d design - 3d printing - mold making - plastic injection.

5.What services can we provide?

Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU;

Accepted Payment Currency: USD, EUR;

Accepted Payment Type: T/T,L/C,PayPal,Western Union,Escrow;

Language Spoken:English,Chinese,Spanish,French,Russian.

6.What are the characteristics of your service?

1. Your inquiry related to our products or prices will be replied within 24 hours.

2. Well-trained and experienced staffs to answer all your enquiries in fluent English.

3. Offering the support to solve the problem in the application or selling period.

4. Competitive prices based on same quality.

5. Guarantee samples quality same as mass production quality.