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Continuous partial roll forming process method for ultra-thin fibrilia composite board

A technology of roll forming and process method, which is applied to household appliances, other household appliances, flat products, etc., which can solve the problems of low production efficiency and inability to produce ultra-thin hemp fiber composite boards, so as to improve production efficiency and reduce internal Pores, the effect of improving mechanical properties

Active Publication Date: 2019-02-15
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common hemp fiber composite boards are made of felt and then molded, which has low production efficiency and cannot produce ultra-thin hemp fiber composite boards.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) The chopped hemp fiber and PP fiber are solid-phase blended, air-laid, and needle-punched to consolidate to prepare a felt, and the thickness of the felt is 5mm. On-line continuous heating is carried out by non-contact heating, the heating temperature is 200° C., and the heating time is 5 min. The heated preform is preliminarily formed by the preheated pressure roller, the roll gap is 3mm, the preheating temperature of the pressure roller is 80°C, and the rolling speed is 1000mm / min.

[0027] 2) Carry out non-contact on-line heating to the plate after rolling, the heating temperature is 210° C., and the heating time is 3 minutes. Then it is formed continuously through the second preheated pressure roller, the roll gap is 2mm, the preheating temperature of the pressure roller is 100°C, and the rolling speed is 1000mm / min.

[0028] 3) Carry out non-contact on-line heating to the plate after rolling, the heating temperature is 200° C., and the heating time is 2 minutes...

Embodiment 2

[0031] 1) The chopped mixed hemp fiber (hemp fiber: jute fiber = 1:1) and PLA fiber were solid-phase blended, carded, laid, needle-punched and consolidated to prepare a felt with a thickness of 4mm. Dip the felt into the prepared ammonium polyphosphate solution, then take it out and dry it with hot air. On-line continuous heating is carried out by non-contact heating, the heating temperature is 180° C., and the heating time is 6 minutes. The heated preform is preliminarily formed by the preheated pressure roller, the roll gap is 2mm, the preheating temperature of the pressure roller is 80°C, and the rolling speed is 800mm / min.

[0032] 2) Carry out non-contact on-line heating to the plate after rolling, the heating temperature is 190° C., and the heating time is 3 minutes. Then it is formed continuously through the second preheated pressure roller, the roll gap is 1.5mm, the preheating temperature of the pressure roller is 100°C, and the rolling speed is 800mm / min.

[0033] ...

Embodiment 3

[0036] 1) The chopped flax fiber and PA fiber were solid-phase blended, carded, laid and needle-punched to consolidate to prepare a felt with a thickness of 3 mm. On-line continuous heating is carried out by non-contact heating, the heating temperature is 250° C., and the heating time is 6 minutes. The heated preform is preliminarily formed by the preheated pressure roller, the roll gap is 1mm, the preheating temperature of the pressure roller is 100°C, and the rolling speed is 500mm / min.

[0037] 2) Carry out non-contact on-line heating to the plate after rolling, the heating temperature is 260° C., and the heating time is 2 minutes. Then it is formed continuously through the second preheated pressure roller, the roll gap is 0.8mm, the preheating temperature of the pressure roller is 100°C, and the rolling speed is 500mm / min.

[0038] 3) Carry out non-contact on-line heating to the plate after rolling, the heating temperature is 260° C., and the heating time is 2 minutes. T...

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Abstract

The invention discloses a continuous partial roll forming process method for an ultra-thin fibrilia composite board, and belongs to the technical field of a fibrilia composite board forming process. The problem that an existing forming process cannot produce the ultra-thin fibrilia composite board with a thickness of 0.2-2 mm is solved. The continuous partial roll forming process method can perform continuous rolling on the ultra-thin fibrilia composite board after a prefabricated body is preheated at a certain temperature to enable the thickness of the ultra-thin fibrilia composite board to gradually reach an ultra-thin thickness of 0.2-2 mm. The ultra-thin fibrilia composite board prepared has the characteristics of compact internal structure, good interface performance, surface decoration, good comprehensive mechanical properties, high molding efficiency and low cost, and can be widely applied to the fields such as building decoration materials, wallpapers and veneer plates of composite panels.

Description

technical field [0001] The invention relates to a hemp fiber composite board and a forming process thereof, in particular to a preparation method of an ultra-thin hemp fiber composite board. technical background [0002] With the progress of society, people's demand for environmental protection, energy saving, material saving, etc. is constantly increasing, and the requirements for building decoration materials and wallpaper materials are also getting higher and higher, and the market competition is fierce. Environmental protection, low cost, and high performance are the development trends of this series of materials. As an organic material, hemp fiber has good performance and is environmentally friendly. Now common hemp fiber composite boards all adopt the method of preparing felt and then molding, which has low production efficiency and cannot produce ultra-thin hemp fiber composite boards. Therefore, the present invention proposes an ultra-thin hemp fiber composite boar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/24B29C43/58B29C43/52B29C59/04B29C70/34B29L7/00
CPCB29C43/24B29C43/52B29C43/58B29C59/043B29C70/34B29C2043/5816B29L2007/002
Inventor 李志刚韩洪江刘俊辉刘雪强贾红杰程秀明周晓丽赵泼高丹
Owner JILIN UNIV
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