Acrylic bathtub forming process

Explanation of acrylic bathtub forming process

1. ?#Forming:

Bathtubs, shower room chassis, backboards, and other sanitary ware are usually molded using acrylic or composite plastic sheets. Due to the complex appearance of bathtubs and other products, which have a deep molding height, the materials and machinery used in Xitong packaging materials are difficult to meet the process requirements. Therefore, selecting appropriate boards and equipment is the foundation for excellent sanitary ware molding.

2. ?#Plate:

The plastic plate used for sanitary ware molding mainly uses pure acrylic (chemical name methyl methacrylate) material or ABS composite material, as well as newly developed thermoplastic materials. The specialized acrylic plate used for sanitary ware has excellent surface finish, and its wear resistance is equivalent to aluminum. It is not easy to scratch and is easy to clean. Moreover, if there is an accidental scratch on the surface, as long as a polishing agent is used, it can be quickly and conveniently repaired and restored.

3. ?#mold :

In actual production, first design and process the suction molding mold according to the design drawings or actual samples of the sanitary ware. The suction molding mold generally uses aluminum alloy or resin mold. The aluminum alloy mold has a long service life, good process characteristics, and high surface smoothness. However, due to its high cost and long processing cycle, the application of conventional sanitary ware products in production is limited to some extent. Due to its low cost and short processing cycle, resin molds are currently widely used in the rapidly changing environment of domestic sanitary ware varieties.

4. ?#vacuumforming :

heat and soften the plate cut as required in the furnace of the blister forming machine. The temperature of the acrylic plate is generally 150-180 degrees, the composite plate is generally 130-150 degrees, and the PC plate is generally 150 degrees.) The softened plate is accumulated on the mold by mechanical pressure. Under the condition of sealing in the mold, the plate is thermally stretched and deformed by compressed air or vacuum blowing and suction. When suction is performed on the mold wall, start the cooling fan as appropriate to harden and shape the plate, Then demould and remove the product. According to different appearance products and different models, the process may vary slightly. The advanced molding process adopts digital fully automatic molding and product delivery, and the local method is to manually make it step by step. With the modernization transformation of large-scale industrialization, local methods are about to be phased out, and investors must consider this reality.

5. ?#adhesion :

After forming, the raw material needs to be reinforced with resin adhesion. The eliminated adhesion is generally composed of unsaturated resin and glass fiber at the bottom of the sanitary ware raw material, so that the formed product has sufficient strength. There are generally two methods of adhesive application: mechanical spraying and manual pasting. Mechanical spraying is the use of a specialized spray gun to spray resin and cut glass fibers onto the bottom surface of sanitary ware, and then use a robot or manual pressure roller to flatten it. Currently, most sanitary ware production uses mechanical pasting methods. After the adhesive application is completed, it is best to place it in a constant temperature curing furnace and fully cure it in a drying room at 40~50 ℃. After constant temperature curing, the deformation of the product in the future is significantly reduced.

6. ?#Edgecutting:

After the dried product has solidified, edge cutting begins. Manual cutting is labor-intensive, with guaranteed quality and serious safety hazards. Using mechanical edge cutting to solve the above problems, the vast majority of manufacturers now use specialized edge cutting machines for operation.

7.??#punching :

For punching holes on sanitary ware such as bathtubs, if they are on a flat surface, mechanical processing such as porous drills should be used as much as possible. The device holes on the side of nozzles and other devices can be processed using machining centers or robotic arms (industrial robots), but due to the expensive equipment, most of them are currently manually operated.

8.??#grinding :

To prevent water leakage, the device holes on the sanitary ware should be polished using a dedicated grinding blade. The adhesive layer on the back of the sanitary ware should be ground to create a circular device plane, which is more conducive to leak protection during accessory installation. This process cannot be ignored.

9. ?#support :

Sanitary ware supports are made of solid wood, plastic, steel structure, and other materials, with stainless steel square tubes being the most commonly used. When applying adhesive, fix the cushion block or frame used for installing the bracket in the appropriate position of the product, and then use explosive nails or clips to install the bracket. The quality of the sanitary ware bracket affects the safety of the user. Therefore, the bracket of the sanitary ware must be made sturdy and stable.

10. ?#assembly :

The installation of water parts and electrical appliances should be waterproof to ensure safety. When the production is large, assembly line operations should be considered. Generally speaking, it is recommended to use a desktop non extrusion conveyor production line?