Pulp Molded Products - HTA Custom Specifications

This article explains in more detail to readers from 4 aspects the design terms encountered at different stages in the pulp molding customization process, as well as the differences between manual machines and automatic machines in production and manufacturing. It is helpful to enhance the efficiency of communication between us and customers.

1. Four-stage design

① Creative design

The main software used are: AI/PS/procreat, etc.

Use creative design as a model to guide subsequent design work, and use the powerful visual appeal of graphic design to stimulate customers' curiosity and desire to purchase.

② Graphic design

The main software used is: keyshot/C4D

Enhance the visual presentation of the product. The realism and three-dimensionality of the rendering can provide a more valuable understanding of the appearance, structure and details of the product, thereby enhancing recognition of the product.

③ Structural design

The main software used is: RHINO/CAD

At this point, we enter the product production process. The structural designer will design the structural engineering drawing based on the actual object.

④ Mold design

The main software used is: UG/PROE

The last step is to draw mold drawings for processing bulk molds, and finally put them into product manufacturing.

2. File format and design requirements

① File format

The key to the file format is mainly in the structural design. STP\XT\PRT is often used as the main format to ensure that the Nurbs surface format can be given in the file.

Surfaces are divided into grid surfaces (right picture) and Nurbs (left picture) surfaces. Grid surfaces can only be used for proofing and model rendering, and cannot be used for subsequent production and processing. Nurbs surfaces are real surfaces and can be used for production and processing.

② Design requirements

——R angle:

The plane R angle is more than 0.5°, and the elevation R angle is more than 3°.

The plane R angle has no effect, but the elevation R angle needs to be determined according to the product size.

——Draft angle:

The draft angle is required to be above 0.5 degrees.

——Spacing:

If it is larger than 8mm, it will not affect the drafting yield.

 

3. Paper-plastic trimming process

During the manufacturing process of paper-plastic products, there will be excess paper molding on the edges, and the final step usually involves trimming and trimming using different techniques. Divided into: skirt, hem, ring cutting, flat cutting. As shown below.

4. The difference between automatic machines and manual machines

Different products require different production equipment. In this section, the differences between automatic equipment and manual equipment will be explained through three dimensions.

① Equipment differences

Automatic machine: The automatic machine integrates pulp extraction, molding, hot pressing, and the whole process takes about 120 seconds. The entire product manufacturing process is mechanized, with higher precision.

Manual machine: The manual machine is divided into two sets of forming and hot pressing machines, which require manual handling and drying. However, the pressure of a single hot press machine is relatively high.

② Mold difference

Automatic machine: The material is made of all-aluminum 6061, with a fixed mesh inside. The mold accuracy is higher than that of manual machines.

Manual machine: The manual machine forming mold can use ABS material. The internal packet network is an active network.

③ Difference in production capacity

Take the 1070 fully automatic machine and the 8060 manual machine as an example:

Automatic machine: mold plate size is 100×70cm, daily production capacity is 600 molds.

Manual machine: mold plate 80×60cm, daily production capacity 400 molds.

For the same product size, the mold plate of the automatic machine is larger and the single-mold output is high. The manual machine also needs to be manually transported and dried, resulting in a large difference in production capacity between the manual machine and the automatic machine.

5. Process distinction

① Wet pressing:

It refers to the process in which the slurry is injected into the forming mold through the pipeline through the pipeline, and the excess moisture is absorbed by vacuum to form a wet embryo, which is immediately transferred to the hot-pressed shaping mold for rapid extrusion and drying.

This process has a series of advantages, such as high production efficiency, smooth and delicate surface of the formed product, and beautiful appearance. However, the wet pressing process also has its limitations. For example, for products with a small slope or small R-angle, there may be problems with demoulding difficulty or a high screen breakage rate.

② Dry pressing:

It is a molding method with low pulp moisture content. This process is suitable for pulp moisture content lower than 10%. In the dry pressing process, the pulp is first dewatered and compressed before being placed into a mold. The pulp is then shaped into the desired shape through high-pressure mechanical pressure.

Pulp molded products produced by the dry pressing process usually have high density and compressive strength, smooth surface, compact structure, high hardness and low water absorption. These characteristics make dry-pressed products perform well in applications that need to withstand greater pressure or impact, making them particularly suitable for making cartons, cardboard, box liners, liners, disposable tableware, etc.

③ Semi-dry pressing:

Pulp molded products go through a series of processes before shaping, such as airing, drying, drying, spraying, showering, sprinkling, etc., to keep the moisture content at about 35%. Then, in-mold drying or shaping is performed to obtain high-quality paper mold products. This process method not only retains some of the advantages of the wet pressing process, such as the smooth and delicate surface of the product, but also overcomes the problems that may exist in the wet pressing process, such as difficulty in demoulding and high screen breakage rate. At the same time, the semi-dry pressing process consumes less energy and is more efficient than the dry pressing process.

6. Color Definition

For the color design of paper-plastic gift boxes, white and natural colors are generally recommended. These two colors are the original colors of sugar cane and bamboo, and there is no water pollution;

If the brand must require colored products, generally the demand is relatively large, our definition is that the order amount cannot be less than RMB 500,000;

Aimeida has brand-new color technology that can provide customers with zero-pollution solutions in all colors.

7. Definition of slurry

① Sugar cane fiber:

Sugarcane fiber comes from sugarcane bagasse, which is a by-product of sugar mills. After chemical or biological pulping, bagasse pulp can be obtained. This sugarcane fiber has moderate strength and moderate toughness, making it ideal for use in molded products.

In addition, sugarcane fiber, as a biodegradable natural cellulose material, has good biodegradability. After a certain period of natural degradation, it can be decomposed by microorganisms into harmless substances such as carbon dioxide and water. At the same time, sugarcane fiber does not contain any toxic or harmful substances and is not harmful to the human body or the environment. Therefore, pulp molded sugarcane fiber products also meet environmental protection requirements.

② Bamboo fiber:

It is a pulp molded product that uses bamboo as raw material, fiber made through chemical processing and special processing technology, and then undergoes pulping, adsorption molding, drying and shaping, shaping and other processes. Bamboo fiber is a medium-long fiber, and its performance is between that of coniferous wood and hardwood. Products produced using bamboo pulp have strong toughness and a smooth and delicate surface, but are prone to plush-like fuzz fibers.

The application of bamboo fiber in pulp molding adds more possibilities. However, for products with complex shapes, slopes and small draft angles, additional fibers or materials may need to be added to enhance their properties.

③ Wood fiber:

The wood fiber raw material is converted into fibrous material through pulping, refining and other processes, and is suspended in water to form pulp. Then, through specific molds and processes, the pulp is adsorbed and formed, and then through drying, shaping and other steps, the required pulp molded products are finally made.

Pulp molded wood fiber products offer several advantages. First, they are environmentally friendly because wood fiber is derived from renewable resources, and the waste generated during the production process is also easy to recycle and dispose of. Secondly, pulp molded wood fiber products have better physical properties, such as strength, toughness and durability, and can meet the needs of various packaging and products. In addition, pulp molded wood fiber products also have good cushioning properties and can effectively protect packaged items.

We are committed to building HTAeco into an internationally renowned service brand with plant fiber pulp molding technology as its core, global presence, customer trust, industry respect, and employee love.

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