Gas-assisted extrusion equipment

An extrusion equipment and gas-assisted technology, which is applied in the field of plastic thermal processing equipment, can solve the problems of affecting the barrel, the large pressure drop of the die, and increase the energy consumption, so as to meet the requirements of reducing the rotational torque and reducing the extrusion expansion ratio. , The effect of prolonging the life of the whole machine
CN103496145AInactive Publication Date: 2014-01-08昆山市华浦塑业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
昆山市华浦塑业有限公司
Publication Date
2014-01-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses gas-assisted extrusion equipment. The gas-assisted extrusion equipment comprises an extruder and an extruder head which is matched and connected with the extruder, wherein the extruder comprises a material cylinder; the inside of the material cylinder is provided with a screw rod; the screw rod is capable of rotating in the material cylinder and comprises main threads and accessory threads which are arranged in intervals with the main threads; the height of each main thread is greater than that of each accessory thread; the extruder head comprises a gas input controlling device and an extrusion opening die; a gas inlet hole is formed in the extrusion opening die; the gas inlet hole is connected with the gas input controlling device; the gas in the gas input controlling device enters the extrusion opening die through the gas inlet hole; a gas layer is formed between the inner wall side of the extrusion opening die and a molten plastic body. Through the gas-assisted extrusion equipment, the molten plastic body can be fully stirred and pushed to a discharging die opening, the requirement on the rotation torsion of the screw rod can be reduced, the whole life of the gas-assisted extrusion equipment is prolonged, and the production efficiency is improved.
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Description

technical field

[0001] The invention relates to the field of plastic thermal processing equipment, in particular to a gas-assisted extrusion equipment. Background technique

[0002] Extrusion equipment heats the plastic to make it into a viscous flow state. Under pressure, it passes through a die with a certain shape to become a continuous body with a cross-section similar to the shape of the die, and then cools to make it have a certain geometric shape. The plastic of different sizes changes from a viscous fluid state to a high elastic state, and finally cools and shapes into a glass state to obtain the desired product. After years of development, the extrusion equipment has been derived from the original single-screw, twin-screw, multi-screw, and even no screw. The extruder (main machine) can be matched with various plastic molding auxiliary machines such as pipe, film, handle material, monofilament, flat wire, packing belt, extruded net, plate (sheet), profiled material,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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