Industrial Pulp Moulding Machine

Biodegradable and economical
All packaging materials are robust and provide reliable protection. Made of (recycled) paper, bagasse straw and various virgin fibres, they are fully degradable. As a result, they offer a perfect alternative to plastic packaging products.

On top of their sustainable nature, our pulp moulding machines are economically priced. This is made possible by clever purchase arrangements and yearlong optimisations regarding costs and energy use.

Automated stacking, packing, handling and palletising
In combination with a stacking, packing, handling and palletising unit, the moulded fibre lines are fully self-supportive with minimised operator involvement and handling. Furthermore, ERP-integration ensures improved efficiency and automated, real-time production information.

Barrier coating options
Sometimes, food packaging materials need a coating. For instance, to provide humidity control, to make them airtight, or to seal them off. Upon request, we can add a process step to our pulp moulding machines to enable the addition of a wide array of barrier linings.

Effortless integration with ancillary equipment
You will find our range of pulp moulding machines. All of them can be easily integrated with ancillary equipment. Including afterpress machinery, that adds the possibility to emboss or print the pulp moulded products, or coat the moulded products with a barrier.

Custom-made pulp moulding machines
All our pulp moulding machines are tailored to meet your requirements. But perhaps you wish to produce an entirely new pulp moulded product.

The paper molding machine is very important in production efficiency. Here are some points to considering while choosing a recycled paper molding machine –

Stability of Control System
All systems involved in the recycling process are closely linked with each other. The systems work automatically as per the operational settings. Therefore, a steady and durable control system is needed to make sure that each process is performed accurately and simultaneously.

Qualification Rate
Qualification rates directly reflect the productivity of the machine and also the working state of the molding machine. To manufacture efficient and up to the mark products, the mold should be clean, perfect in size and shape, and should be robust and sturdy.

Safety, Maintainability & Operability
Safety is an essential thing in the molding process. There are special training given to the workers working on the molding machines. Paper molding machines need to be cleaned on a regular basis to maintain their operational efficiency.

Adsorption Forming Molds
Adsorption forming molds consist of a convex mold, a concave mold, a mesh mold, a mold base, a mold cavity, and an air chamber, among others. The mesh mold is the main component of the mold. Since the mesh mold is woven from wires (metal or plastic) with a diameter of 0.15mm, it cannot form independently and must be attached to the mold surface to function.

The mold cavity is an empty space formed by the mold base and the backside of the mold, which maintains a certain thickness and perfectly matches the shape of the working surface. The convex and concave molds form a shell structure with a specific wall thickness. Small holes are uniformly distributed to connect the working surface and the mold cavity.

The mold is mounted on the template of the pulp molding machine through the mold base, while the other side of the template is equipped with an air chamber that communicates with the mold cavity.

Determining the allowance in the design of adsorption forming molds is crucial. Due to water evaporation, there will be shrinkage when wet pulp is made into finished products. Different positions of the same product have irregular and varying shrinkage rates, leading to multidirectional and unpredictable changes during the forming process. This poses challenges in determining the allowance for mold design. Currently, the packaging industry does not require high precision in the manufacturing of pulp molded products, so designers mainly rely on experience to determine the allowance.

Pulp Molding Shaping Molds
Shaping molds for pulp molding are designed to provide heating, pressurization, and dehydration functions, allowing the wet pulp to undergo direct drying and shaping inside the mold. Products manufactured with shaping molds have smooth surfaces, accurate dimensions, solid texture, and good rigidity. Disposable tableware often utilizes this type of mold. In the industrial packaging field, shaping molded paper products are also used for packaging small and delicate items.

The structure of shaping molds includes convex molds, concave molds, mesh molds, and heating elements. The convex or concave molds with mesh molds have drainage and vent holes. During the production of pulp molded products, the wet pulp undergoes extrusion and then heating inside the shaping mold, which vaporizes and removes the water content, resulting in the formation of the product.

The presence of a mesh mold in the shaping mold can cause a mesh pattern on the surface of the product, and the mesh mold can quickly become damaged due to frequent extrusion. To address this issue, some mold designers have developed a meshless mold using copper-based spherical powder metallurgy. Over the past years, through multiple structural improvements and the selection of appropriate powder particle sizes, the meshless shaping molds have been manufactured with a lifespan ten times longer than that of mesh molds and at a 50% lower cost. The resulting paper products exhibit high precision and have smooth internal and external surfaces.

Pulp Molding Trimming Molds
After drying, the wet pulp may undergo deformation, with certain areas experiencing severe deformation. When there is a high requirement for the external shape of the product or when significant precision is needed, the product needs to undergo a trimming process using trimming molds. These molds also require heating elements but do not have mesh molds. The products that require trimming should retain a moisture content of 25-30% during the drying process to facilitate trimming.

In practical production, it is challenging to control the moisture content, making it difficult for the products to meet quality requirements. To address this issue, some manufacturers have designed spray trimming molds, which feature spray holes corresponding to the areas that require trimming. During operation, the thoroughly dried product is placed into the trimming mold, and simultaneously, the spray holes on the mold spray water and apply heat and pressure to the product, achieving the desired trimming effect.

Bagasse pulp - the raw pulp molding material for the manufacturing production of molded pulp products
Bagasse pulp is a good raw material for molded pulp products. Bagasse fiber is mostly used in the production of pulp molded lunch boxes and tableware products.

Bagasse pulp is made of bagasse as raw material through chemical or biological pulping to make bagasse pulp. The bagasse pulp can be in a wet state, or it can be dried and pressed into a pulp board.

The bagasse pulp in the wet pulp state is then added with water to prepare a certain concentration of slurry directly for molded pulp manufacturing; while the pulp board is broken by a pulper and then water is added to configure a certain concentration of slurry for the pulp mold Plastic production.

A certain concentration of slurry is supplied to the pulp molding machine. The slurry is formed, shaped, and trimmed in a pulp molding machine to become a molded product.

Bagasse fiber is a medium-long fiber with the advantages of moderate strength and moderate toughness. It is currently the most suitable raw material for molded pulp products. Therefore, bagasse pulp products are currently the most widely applicable.

Bamboo pulp - the raw pulp molding material for the manufacturing production of molded pulp products
Bamboo pulp is a good raw material for molded pulp (plant fiber molding) products. Bamboo fiber is a medium-long fiber, and its performance is between softwood and hardwood.

Products made from bamboo pulp have strong toughness, cracks are not easy to appear when deep pulp molded products are produced, and the surface is smooth and delicate and has high whiteness.

However, fluffy fluff fibers are prone to appear after the surface of the product is rubbed. When the proportion of bamboo pulp exceeds 40%, it should be ground to eliminate the phenomenon of fluff fiber on the surface of the product.

The production of products with complex shapes, small slopes and small R angles generally requires adding a certain proportion of bamboo pulp. Because bamboo pulp resources are more precious, the price is slightly higher than that of bagasse pulp.