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Preparation method for extrusion blow molding of waste

An extrusion blow molding and waste technology, which is applied in the field of waste extrusion blow molding, can solve the problems of complex production process of die-casting molding process base, prone to brittle fracture, high cost, etc., and achieves high cost performance and no secondary pollution. , the effect of short process time

Inactive Publication Date: 2017-10-13
慈溪市现代模具有限公司
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Problems solved by technology

However, with the increasing application of plastic products, people have put forward higher requirements for the precision, shape, function and cost of plastic products, and the traditional injection molding process has been difficult to meet this requirement.
The base of the injection molding process has the disadvantage of low strength, and the base of the die-casting process has the disadvantages of complicated production process, high cost, and prone to brittle fracture

Method used

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  • Preparation method for extrusion blow molding of waste

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Embodiment Construction

[0027] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. refer to figure 1 , the present invention provides a kind of waste material extrusion blow molding preparation method, comprises the following steps:

[0028] Step A, sorting the recovered waste to remove impurities and crushing to obtain crushed raw materials, which are sent to the hopper on the blow molding machine through a feeder or manually;

[0029] Step B, set the heating temperature, push the melted plastic material from the rear end of the barrel to the front end under the thrust of the screw rotating and stirring, and then inject it into the material storage tank of the machine head;

[0030] Step C, the material storage tank of the machine head is heated up, the raw material from the barrel is kept in a gel state, and under the thrust of the screw, it flows out from the machine head after being heated and kept warm, and extruded to the upper ...

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Abstract

The invention relates to the field of blow molding techniques and provides a preparation method for extrusion blow molding of waste. According to the preparation method for extrusion blow molding of waste, by recovering and recycling leftover waste, the environment is protected, cost is low, and secondary pollution is avoided. A parison is pulled through negative-pressure pulling force and can rapidly and stably enter a mold cavity of a mold after being discharged, time for the whole process is short, the phenomena of difficult forming, and material stacking and accumulation caused by too fast crystallization of the parison can be effectively avoided, the rejection rate of parts is decreased, the work time is shortened, and the production efficiency is improved; and the preparation method for extrusion blow molding of waste has the advantages of high strength, high tenacity and high cost performance and also has the advantages that the appearance is attractive, the shape is variable, and the technique is environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of blow molding technology, and in particular relates to a preparation method of waste material extrusion blow molding. Background technique [0002] At this stage, plastic materials are widely used in people's production and life, and the annual waste plastics and plastic waste raw materials are gradually increasing. For these wastes, the usual method is to treat them as garbage. At this stage, whether it is Whether it is incineration or landfill, the pollution caused by a large amount of plastic waste is unavoidable. On the surface of lightweight GMT and polypropylene felt boards, more than 200 grams per square meter of PET non-woven fabrics, PU sponges, leather and other heat-insulating and sound-absorbing and decorative layers are compounded, making the components of the materials more and more complex, and they are classified and recycled. It becomes more and more difficult, especially there are about ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/06B29C49/42
CPCB29C49/06B29C49/4205Y02P70/10B29C2049/023
Inventor 景伟德
Owner 慈溪市现代模具有限公司
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