Plastic screws, also known as plastic screws, China's common plastic screws are hot melt injection molding processing, according to the key materials to distinguish: polyester PA66 screws, PP screws, PVC screws, PE screws, etc., the characteristics of the materials are different, so the application field is also different.

Since the 1970s, plastic products have been widely used in industrial production, work and life, and plastic products have become a very important branch of the chemical and oil industry, and have been applied in many major uses. Compared with traditional metal screws, plastic screws have excellent performance in all aspects.

Guangzhou OTEM Engineering Plastics Co., Ltd. is a plastic screw processing customized manufacturing experience of more than 20 years in Guangzhou injection molding factory, with more than 2,000 square meters of physical processing plant, also has CNC, rubber vulcanization machine, electric discharge machine and other related production line equipment, has a strong strength in the mold customization business. In addition, a professional design team can bring satisfactory products and services to users.

First, according to the material

Polyester screws, PC screws, PVDF screws, PP screws, PTFE screws, PEEK screws, PPS screws, PFA screws and PI screws, etc.

Second, according to the type of screw head

Pan head plastic screws, countersunk plastic screws, outer hex plastic screws, hex plastic screws, plastic setting screws, etc.

Three, according to the groove

Cross, one word (groove), hexagonal, rice word, red plum, etc.

Four, according to the screw specifications and models

Metric system M2 screw teeth, M2.5, M3, M4, M5, M6, M8, M10, M12

Inch screw 2-56, 4-40, 6-32, 8-32, 10-32

According to the above classification can be combined with many different types of plastic screws

Performance index value of plastic screws

The most important physical performance index value

(1) The head and the contact of the lead screw resist torsion

(2) The concave groove of the head, especially the cross head, is not in line with the requirements of the head specification of the screw screwdriver.

(3) The outer diameter, middle diameter and bottom diameter of the thread of the plastic screw are standardized. Due to the water absorption capacity of different plastics resulting in different specifications under different application conditions, this specification is not as stringent as metal material screws.

The most important indicator of organic chemical properties

(1) Acid resistance

(2) Alkaline resistance

(3) Flame retardant rating

(4) Insulation layer performance

Advantages of plastic screws

(1) Compared with ordinary metal screws, the main advantage of plastic screws is that their insulation layer is good and conductive.

(2) In addition, because of the production of non-metallic materials, it will not cause electromagnetic interference such as vortices under the push of current flow or other electronic signals, and its anti-interference is somewhat suitable for communication and other fields.

(3) the temperature resistance of plastic screws is more suitable, in which the better PVDF screws are followed by polypropylene, they have strong corrosion resistance, and polyester screws compared with the first two types, strong oxidizer resistance is very poor, so in some electroplating industry strong acid and alkali environment, plastic screws, especially PVDF screws are widely used.

Insufficient plastic screws

(1) The main disadvantage of plastic screws is that the torque and strength of ordinary plastic screws are not as good as that of ordinary metal screws, and the torque is very likely to have a large slip wire or head fracture.

(2) Due to the shrinkage of different plastic forms, the size deviation of plastic screws is allowed to be large due to changes in temperature and humidity and the length of the production cycle or other reasons. In addition, because the general plastic material is too soft, it can not use the conventional ring gauge measurement method.

Application range of plastic screws

Plastic screws have insulation layer, no carbon, corrosion resistance, beautiful and generous, never rust and other major characteristics, and modified materials engineering project plastic, the use of product compressive strength, impact resistance can be compared with metal materials, people often say that plastic screws alias polyester screws with 30% glass fiber, its mechanical equipment performance is far better than the general polyester, The selection of plastic screws is becoming more and more diversified, the performance is constantly improving, and the main use is becoming more and more open.

(1) Medical device enterprises (insulating layer, no carbon, environmental protection, anti-electromagnetic interference, so that the application of diagnostic and treatment industrial equipment high safety factor)

(2) Wind power enterprises (isolation and insulation layer of main box power circuit PCB board)

(3) Aerospace industry (insulation layer on electronic products, anti-electromagnetic interference)

(4) Office supplies (never rust, beautiful and practical)

(5) Chemical oil industry (heat resistance, solvent resistance, corrosion resistance, increase the service life of equipment)

(6) Electronics industry (insulation layer, anti-interference, light weight)