1. Enhance structural strength

2. Optimize material use

3. Improve product stability

4. Functional expansion

5. Extended service life

6. Design flexibility

1. Why are there vents on the surface of rotomolded products?

（1）Rigid process requirements - exhaust is the "lifeline" of rotational molding

（2）The location of the exhaust hole cannot be completely hidden

（3） Air pressure balance during the cooling stage



2.How to reduce the impact of exhaust holes on the surface?
（1）Design optimization

（2） Process improvement

（3）Post-processing

Here are some steps and precautions for how to evenly wear the surface of the roto-molded finished product:

1. Choose the right abrasive

2. Determine the purpose of wear

3. Control the intensity and speed of wear

4. Uniform wear

5. Pay attention to safety

1. High design freedom and flexible modeling

2. Lightweight, easy to install and transport

3. Strong durability and wide application environment

4. Low cost, suitable for small batch customization

5. Diverse surface treatments and rich textures

6. Environmental advantages

7. Functional expansion



Typical application scenarios
Home decoration: art ornaments, imitation stone flower pots, creative lampshades.

Commercial space: shopping mall art installations, corporate LOGO sculptures, theme restaurant decorations.

Outdoor landscape: park sculptures, imitation wood railings, holiday decorations (such as Christmas trees, pumpkin lanterns).

Summary
The core advantage of roto-molded decorations lies in "low cost to achieve complex design" + "lightweight and durable", which is particularly suitable for scenes that require personalization, small and medium batches, and outdoor use. It is a high-quality alternative to traditional metal and ceramic decorations.

1. Potential problems of rotomolding mold modification

2. Is it recommended to change the mold? Decision-making by scenario

3. Alternative solutions for remodeling

4. Key steps before remodeling

1. Clarify production needs

Before choosing rotomolding equipment, enterprises need to clarify their own production needs. This includes determining the type, specification, quantity and production process requirements of the plastic products to be produced. Understanding this basic information will help enterprises determine the specifications and performance requirements of the required equipment.

2. Consider equipment performance parameters

Specifications and capacity: According to production needs, select suitable equipment specifications and capacity to ensure that the requirements of production efficiency and output can be met.

Precision and stability: The precision and stability of the equipment have an important impact on product quality. Choosing equipment with high precision and high repeatability can improve the qualified rate and stability of the product.

3. Understand market reputation and after-sales service

Market reputation: Understanding the reputation and user evaluation of rotomolding equipment in the market will help to judge the performance and quality of the equipment. Choosing brands and manufacturers with good reputation can reduce the risk of purchase.

4. Consider budget and return on investment

Budget range: Set a reasonable budget range and select and configure the equipment according to the budget. At the same time, consider long-term operating costs, such as maintenance costs and consumables costs.

5. Actual inspection and comparison

Field inspection: Enterprises with conditions can inspect the equipment manufacturers on site to understand the actual operating conditions, production efficiency and process flow of the equipment. This will help enterprises to evaluate the performance and quality of the equipment more comprehensively.

1. Not considering wall thickness distribution

2. Overly complex mold features

3. Insufficient draft angles

4. Ignoring shrinkage tolerances

5. Ignoring proper venting of the mold

6. Designing with inconsistent surface textures

7. Underestimating the cooling stage in the design

8. Improper placement of reinforcements

9. Insufficient consideration of post-molding processes

Reinforcement ribs are a method often used in roto-molded products to increase strength. They not only make the wall thickness of the product uniform, but also save materials, improve strength, and avoid appearance defects of the product. Since some roto-molded products are large flat thin-walled products, the surface of the product is more prone to warping and deformation, and the strength is not high. Therefore, in order to increase the rigidity and strength of the large plane and the stress-bearing part of the product, it is necessary to consider designing reinforcement ribs on the corresponding surface of the roto-molded product. Moreover, products designed with reinforcement ribs can also use less raw materials and molding time to achieve the same strength, which makes the wall thickness, strength and cost better coordinated.

As for the size of the reinforcement rib, there are three elements: length, width and height. The height here refers to the size of the reinforcement rib protruding from the wall. The strength of the reinforcement rib is mainly determined by this height. Generally speaking, the design height of the reinforcement rib should be at least 4 times greater than the average wall thickness of the product to greatly enhance the strength of the product. The width of the reinforcement rib should be designed to be at least 5 times the average wall thickness of the product to provide enough space for the powder or liquid to flow into the cavity. If the space is too narrow, the raw material cannot flow into this part of the mold cavity evenly, resulting in bridging, internal porosity and increased shrinkage of the product.

1. Labor cost advantage

2. Flexible trade policies and preferential policies

3. Close to major consumer markets

4. Less trade friction

5. Environmental protection and sustainable development production advantages

6. Production flexibility and customized services

7. Rapidly emerging industrial infrastructure

8. Diversified raw material supply

9. Foreign investment advantages

Roto-molding and blister molding are two different plastic processing methods, which are significantly different in principle, equipment, application and product characteristics. The following are the main differences between the two:

1. Process principle
2. Equipment
3. Mold
4. Raw materials
5. Product characteristics
6. Application areas
7. Production cycle
8. Cost

Roto-molding and blow-molding are two common plastic processing technologies, each with its own characteristics and application scenarios. Here are their differences:

1. Process principle
Roto-molding: Add plastic powder into the mold, heat and rotate the powder to make it melt evenly and adhere to the inner wall of the mold, and demold it after cooling to obtain the finished product.

Blow-molding: Place the molten plastic preform in the mold, expand it to fit the inner wall of the mold through compressed air, and demold it after cooling to obtain the finished product.

2. Applicable materials
Roto-molding: Commonly used powder materials such as polyethylene (PE), polypropylene (PP).

Blow-molding: Commonly used granular materials such as polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET).

3. Product features
Roto-molding: Suitable for the production of hollow, large, and complex-shaped products, such as water tanks, toys, containers, etc., with uniform wall thickness and high strength.

Blow-molding: Suitable for the production of hollow products such as bottles, cans, and barrels, with thin walls, suitable for mass production.

4. Production efficiency and cost
Rotational molding: long production cycle, suitable for small batch and customized production, low mold cost.

Blow molding: high production efficiency, suitable for large batch production, high mold cost.

5. Application areas
Rotational molding: used in large containers, amusement equipment, medical equipment, etc.

Blow molding: widely used in the packaging industry, such as beverage bottles, cosmetic bottles, etc.

1. Material selection and processing
Material quality: Make sure to use high-quality rotomolding grade polyethylene (PE) or other suitable plastic materials, and avoid using materials containing impurities or degradation.

2. Optimize process parameters
Heating temperature: Ensure that the heating temperature is uniform and appropriate. Too high a temperature may cause material degradation, while too low a temperature may cause insufficient material fluidity and fail to completely fill the mold.


3. Mold design and maintenance
Mold surface treatment: Ensure that the mold surface is smooth, free of pollution or rust, and avoid poor material adhesion or obstructed flow.


4. Operation and equipment maintenance
Equipment inspection: Regularly check the heating system, cooling system and rotation system of the rotational molding machine to ensure that the equipment operates normally.


5. Product design and wall thickness control
Wall thickness uniformity: Avoid excessive wall thickness differences when designing products to ensure that the material can be evenly distributed.


6. Inspection and quality control
Online inspection: Use tools such as infrared thermometers to monitor mold temperature during production to ensure uniform heating and cooling.


7. Troubleshooting of common problems
Bubble problem: If the perforation is caused by bubbles, check whether the material is dry and whether the mold exhaust is unobstructed.

Material degradation: If the material degrades due to overheating, reduce the heating temperature or shorten the heating time.

Mold contamination: If there are contaminants on the mold surface, clean the mold thoroughly and check whether the material is pure.