The manufacturing process of corrugated plastic wardrobe boxes typically includes the following steps:

1. Material Preparation

   • Raw Material Selection: Choose high-quality polypropylene (PP) or high-density polyethylene (HDPE) as the main raw material, and select suitable colorants, ultraviolet absorbers, anti-oxidants, etc., according to the product design requirements.
   • Mixing and Stirring: Add the selected auxiliary materials into the raw material in proportion, and stir evenly through a mixer to ensure the uniform dispersion of various additives in the material.

2. Sheet Production

   • Extrusion: The evenly mixed raw material is sent to an extruder, where it is melted under high temperature and pressure, and then extruded from a specific die head to form a flat sheet.
   • Cooling and Solidification: The extruded sheet is rapidly cooled through a cooling system to solidify and form a solid sheet with a certain thickness and strength.

3. Corrugation Processing

   • Pre-treatment of Corrugated Cardboard: If the design requires corrugated cardboard, the flat sheet needs to be preliminarily processed into corrugated cardboard first. This usually involves gluing two or more layers of flat sheets together and then passing them through a corrugating machine to form a wave-shaped corrugated cardboard.
   • Combining with Flat Sheet: The prepared corrugated cardboard is combined with other flat sheets again through gluing or other methods to form a multi-layer composite structure, which will serve as the side and bottom walls of the wardrobe box.

4. Cutting and Shaping

   • Cutting: Use a cutting machine such as a die-cutting machine or a laser cutting machine to cut the combined sheet according to the predetermined size and shape of the wardrobe box, forming various parts such as front, back, sides, top, bottom, and doors.
   • Edge Treatment: Process the edges of the cut parts, such as trimming, chamfering, and rounding corners, to make them smoother and safer to use.

5. Assembly

   • Frame Assembly: Assemble the cut and edge-treated parts into a frame by connecting them with connectors, snaps, or adhesive. The commonly used connection methods include slotted connections, tongue and groove connections, and rivet connections.
   • Door Installation: Install the door on the front of the frame according to the design requirements. The installation method can be hinge connection or sliding rail installation.

6. Surface Treatment

   • Cleaning: Clean the surface of the assembled wardrobe box to remove dust, oil stains, and other impurities, so that the subsequent surface treatment effect is better.
   • Printing: If the customer has printing requirements, carry out printing treatment at this stage. Common printing methods include screen printing, offset printing, and digital printing. Through printing, you can add patterns, logos, instructions and other information to the wardrobe box.
   • Coating: Apply a layer of protective coating on the printed surface of the wardrobe box, such as a light oil or matte oil, to enhance its wear resistance, scratch resistance, and weather resistance.

7. Quality Inspection and Packaging

   • Quality Inspection: Inspect the appearance, dimensions, structural strength, and surface quality of the wardrobe box. Check whether there are defects such as cracks, bubbles, deformation, discoloration, etc. Ensure that the product meets relevant standards and customer requirements.
   • Packaging: After passing the quality inspection, wrap the wardrobe box with protective film or place it in a suitable packaging box for protection, and then label it for identification. Finally, store it in the warehouse for sale or shipment.