Who knows about universal soft mold and tell me about it?

Wanyou soft mold is made of special rubber for craft molds through curing and molding. Due to its excellent performance, it is unique among molds. The promotion and application of process molds will solve production process problems for many industries.

1. Application scope of molds

1.1 Application in arts and crafts industry

Universal floppy disk checking tool can be widely used in the production of polymer resin arts and crafts Among them, such as the production of various gold, copper, jade carvings, ivory, amber and other handicrafts and the production of replicas of cultural relics.

1.2 Applied to metal precision casting

The excellent simulation performance of the universal soft mold can be used to make the intermediate mold for precision casting, and then the wax mold and sand mold are made, and then cast by paraffin wax , metal products with complex shapes can be produced. Not only can it improve mold quality and reduce costs, but it can also shorten the molding cycle.

1.3 Application in high-frequency embossing leathermaking

The application of process molds in the field of high-frequency embossing leathermaking has become popular abroad. It uses special rubber for process molds to directly design A working mold is made on the prototype, and various raw materials are placed on the mold and processed by a high-frequency embossing machine to produce the required embossed leather products. Using this kind of mold, not only the manufacturing process is simple, the cost is low, the service life can reach more than 10,000 times, but also various exquisite patterns can be produced.

2. Manufacturing technology of process molds

Since the universal soft mold is made of special rubber for process molds, its performance mainly depends on the performance of the special rubber.

2.1 Performance of special rubber for universal soft molds

2.1.1 Excellent simulation performance Using special rubber for process molds, the mold can be directly copied from the original, and the mold can be completely retained. Replicated subtle textures and floral features. The objects to be copied can be clay sculptures, wood carvings, cultural relics, fossils, mechanical parts, or plant flowers, stems, leaves, and fruits. It can be said that craft mold rubber can be used to make molds on anything except liquids and woolen fabrics.

2.1.2 Appropriate elasticity The process mold has good elasticity after being formed, and its elasticity and hardness can be adjusted by changing the formula of the special rubber for the process mold.

2.1.3 Special rubber for process molds can generally withstand high temperatures of 110°C. Therefore, any raw material with a melting point of around 100°C can be cast directly in the process mold.

2.1.4 Excellent non-stickiness Molds made of special rubber for process molds have good demoulding properties, do not require any release agent, and are highly reusable.

2.1.5 Easy mold making Molds made of special rubber for process molds can be solidified at room temperature.

2.2 Preparation process of special rubber for process molds

2.2.1 Equipment and tools vulcanization tank, measuring scale, measuring cup, thermometer

2.2.2 Raw materials and preparation (Based on the ingredient standard of 100 parts of natural latex)

2.2.2.1 Preparation of material A

The raw materials that need to be vulcanized: antioxidant D1, accelerator TmD0.7, zinc oxide 0.5.

Put the raw materials that need to be vulcanized into the vulcanization tank, and rotate the vulcanization tank back and forth to fully mix and react the raw materials in the tank (this process is called "vulcanization" in this process). The time should generally be kept at 10 hours. , the vulcanized raw materials are ready for use.

The raw materials that do not require vulcanization are: ammonia 3, casein 8, borax 1, and distilled water 86.

Process flow: When the natural latex is heated to 30°C, start adding the vulcanized raw materials. Under slow stirring, add the unvulcanized raw materials separately. Stir while adding. When the temperature gradually When it reaches the specified temperature (60-65°C in winter, 58-60°C in summer, and the pH value reaches 9), it is removed from the fire and becomes the first material.

2.2.2.2 Preparation of Material B

Raw material ratio: calcium chloride 3.7, clay 6.4, peach gum 0.5, water 4.3.

Mix the above raw materials evenly according to the proportion and set aside, which is the second ingredient.

2.3 Technical indicators of rubber for process molds (see attached table)

Technical indicators of rubber for process molds in the attached table

Vulcanization

Front

Color light yellow or white

Viscosity (25℃, mP·S) 3000-50000

Relative density (25℃ ) 1.3-1.4

Surface vulcanization time (25℃, mLm) 45-120

Tensile strength after vulcanization

(Pa) ≥2.45×106

Elongation () ≥130

Temperature resistance (℃) 230

2.4 Process Mold Making

Weigh component A: component B = 100:1.8:1.2, put it in a container and mix evenly, then pour it onto the physical sample that needs to be molded. In order to make a mold with a thinner wall thickness, you can Use the method of brushing in stages: In order to increase the tensile strength of the mold, gauze or other substances can be sandwiched between the special glue. The new mold can be molded in 2 hours at room temperature (20°C), and 1 day can be used. use. When the room temperature is too low, you can use warming methods to keep the room temperature above 10°C. The amount of materials A and B can also be adjusted according to changes in room temperature to control mold quality. For example, at 20-25°C, when A:B = 100:1.5, if the room temperature is low, appropriately increase the amount of B material by 0.1-0.3 parts.

3 Notes:

3.1 The special rubber for process molds is sold in two-component packaging. Component A is the rubber and component B is the catalyst. The amount of component B is related to the performance and curing speed of the mold. Generally speaking, the more component B, the faster the curing speed, the higher the strength and hardness of the product, but the poorer elasticity, so accurate weighing is required during preparation.

3.2 As soon as components A and B are mixed, the curing process begins immediately, and the viscosity of the glue gradually rises and cannot be stopped. Therefore, the amount should be prepared according to the required amount during preparation.

3.3 Since component B is a catalyst and contains more active genes, it is easily hydrolyzed by moisture, so the lid should be tightly closed after use to prepare for next use. One-component universal rubber for soft molds is a new product that can be used directly after purchase. No additives are needed and it can be operated at room temperature.