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Pre-impregnation side feeding device and method

A side feeding and pre-impregnation technology, applied in the field of polymer material preparation facilities and processes, can solve the problems of reducing the aspect ratio of brittle fillers, affecting product quality, affecting the feeding of side feeding devices, and reducing compression and shearing. function, product quality is stable and reliable, and the effect of improving the side feeding problem

Pending Publication Date: 2019-08-20
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional side feeding device is simply forced feeding. For materials such as flocculent powder, ultrafine powder, glass beads, short glass fiber Calcium carbonate, short glass fiber, carbon fiber, glass microspheres, etc.) for production, the side feeding method has the problems of poor feeding and reduced feeding capacity, which cannot meet the ratio requirements. For higher ratio side feeding, The problem is more prominent
[0004] In addition, when the moisture content in some raw materials is high, the side feeding device is affected by the high temperature barrel, and the moisture of the raw materials will volatilize and condense in the side feeding device, seriously affecting the feeding of the side feeding device
[0005] Moreover, in the prior art, in order to make the material enter the barrel of the main machine, the side feeding device for forced feeding needs to establish a certain pressure at the place where it enters the barrel, and the material added through the side feeding will be compacted into agglomerates at the outlet section of the side feeder , and may even affect the shape of the material, such as crushing the hollow microspheres, reducing the aspect ratio of the brittle filler, etc. The agglomerated material is not easy to infiltrate and disperse in the melt after entering the host, and ultimately affects product quality
When the material is severely compacted, it will also cause the main screw to be stuck or even damage the screw, resulting in serious losses

Method used

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  • Pre-impregnation side feeding device and method
  • Pre-impregnation side feeding device and method
  • Pre-impregnation side feeding device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1 As shown, this embodiment provides a pre-impregnated side feeding device, which is used for mixing and extruding materials, especially resin materials. The pre-impregnated side feeding device includes an extruder body, a material guiding device and a side feeding device 301.

[0056] Wherein, the extruder body has a host barrel 101, which is configured to mix, melt, convey and then extrude after adding materials. Specifically, the main engine barrel 101 has a main feeding port 102 for adding materials that need to be kneaded and formed. Preferably, the main feeding port 102 is provided with a feeding scale (not shown in the figure), and the two ends of the feeding scale pass through The pipelines are respectively connected to the feed bin and the main feeding port 102, so that the weight of the material fed into the main machine barrel 101 from the main feeding port 102 can be precisely controlled. Those skilled in the art can understand that, in orde...

Embodiment 2

[0081] Compared with embodiment 1, the main difference of this embodiment is:

[0082] Such as Figure 4 As shown, in this embodiment, a splitter assembly is provided between the outlet end of the second feed pipe section 202 and the side feeding device 301 .

[0083] Preferably, the splitter assembly includes an adjustment plate 307 disposed at the outlet end of the second feed pipe section 202 or at the opening of the side wall of the side feeding device 301 , and the body 3071 of the adjustment plate 307 is provided with an overflow hole 3072 . Further preferably, there are multiple flow holes 3072, and the flow holes 3072 include circular holes.

[0084] Since the plate body 3071 of the adjusting plate 307 has a plurality of flow holes 3072, the contact area between the molten material and the side-feed material can be increased, and the two can be more fully and uniformly mixed.

[0085] Other features in this embodiment are the same as those in Embodiment 1 and will no...

Embodiment 3

[0087] Compared with embodiment 1, the main difference of this embodiment is:

[0088] Such as Figure 5 As shown, in this embodiment, a splitter assembly is provided between the outlet end of the second feed pipe section 202 and the side feeding device 301 .

[0089] Preferably, the splitter assembly includes an adjustment plate 307 disposed at the outlet end of the second feed pipe section 202 or at the opening of the side wall of the side feeding device 301 , and the body 3071 of the adjustment plate 307 is provided with an overflow hole 3072 . Further preferably, there are multiple flow holes 3072, and the flow holes 3072 include strip holes.

[0090] Since the plate body 3071 of the adjusting plate 307 has a plurality of flow holes 3072, the contact area between the molten material and the side-feed material can be increased, and the two can be more fully and uniformly mixed.

[0091] Other features in this embodiment are the same as those in Embodiment 1 and will not b...

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PUM

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Abstract

The invention provides a pre-impregnation side feeding device and method. The device comprises an extrusion machine body, a material leading device and a side feeding device. The extrusion machine body comprises a main machine barrel, and according to the arrangement of the main machine barrel, materials are mixed, molten, conveyed and then extruded after being added. According to the arrangementof the material leading device, after being led out from the inner portion of the main machine barrel, a molten material is conveyed into the side feeding device. According to the arrangement of the side feeding device, a material added through a feed port of the side feeding device is subjected to pre-impregnation and mixing in the side feeding device together with the molten material led in fromthe material leading device and is then input into the main machine barrel. Influences of side feeding screws on the side fed material can be weakened, the achievement of the side feeding of materialhigh components, such as powder and glass fiber, is facilitated, and reduction of the compressing and shearing effects of the feeding screws on the material are reduced is facilitated. Furthermore, moisture in the side fed material is forced to be discharged through a feed port or an exhaust hole of the side feeding device in advance, the material mixing effect in the subsequent processing process after the side fed material enters the main machine barrel is ensured, and therefore the side feeding problem is improved, and the product quality is improved.

Description

technical field [0001] The invention relates to the field of polymer material preparation facilities and technology, in particular to a pre-preg side feeding device and method. Background technique [0002] In order to meet different product requirements, polymer materials often need to be modified by adding fillers, reinforcements, flame retardants and other components. Usually, formula materials are mixed and then melted and kneaded by screw extruder and other equipment, extruded and granulated Preparation of modified plastics. [0003] Generally, a high proportion of filling powder (or part of the powder), glass fiber, flame retardant, etc. is forced to be added by side feeding, so as to avoid the stratification of the premixed material affecting the product quality and the main feeding and feeding. Port accumulation, stuck host or affecting product performance, etc. However, the conventional side feeding device is simply forced feeding. For materials such as flocculent...

Claims

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Application Information

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IPC IPC(8): B29C48/28B29C48/395
CPCB29C48/2886B29C48/397
Inventor 马鹏涛李东师维夏宏拓于亚勇余兴兴
Owner KINGFA SCI & TECH CO LTD