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A paper honeycomb composite panel with expandable strong bonding and high sound absorption and its manufacturing method

A manufacturing method and technology of paper honeycomb, which is applied in the field of expandable paper honeycomb composite board and its manufacture, can solve the problems of uneven product skin, insufficient plumpness of molded parts, exposed glass fiber, etc. Effect of sound absorption and peel strength increase

Active Publication Date: 2018-03-13
浙江华江科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the prepreg and the paper honeycomb core layer in this patented product are rigid materials of different materials, the dry process still has the following defects in the actual production process: when there is a large external force (≥150N), the prepreg and The honeycomb core layer will be delaminated. Once delamination occurs in local positions, the rigidity of the board will be limited; when it is baked and molded, due to the thin thickness of the prepreg (2-3mm), it is especially difficult in places where the molding depth is large. It is a right angle or a corner position, which is prone to glass fiber exposure, and there are uneven glass fiber marks on the surface of the product, resulting in insufficient plumpness of the molded part.

Method used

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  • A paper honeycomb composite panel with expandable strong bonding and high sound absorption and its manufacturing method
  • A paper honeycomb composite panel with expandable strong bonding and high sound absorption and its manufacturing method
  • A paper honeycomb composite panel with expandable strong bonding and high sound absorption and its manufacturing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] figure 1 It is a schematic diagram of the structure of the paper honeycomb composite board;

[0033] A kind of paper honeycomb composite panel with strong bonding and high sound absorption, which can be unwound by 50g / m from bottom to top 2 Black spunlace fabric, 10g / 10min modified polyethylene film A7, place prepreg 5, then unwind glass fiber reinforced polypropylene fiber composite material GMT2, 20g / 10min modified polyethylene film B1, place 5mm thick The regular hexagonal honeycomb core material is compounded by unwinding 20g / 10min modified polyethylene film B1, glass fiber reinforced polypropylene fiber composite material GMT2, placing prepreg 5, and finally unwinding 30g / 10min polyethylene film C8 .

[0034] The structure of prepreg 5 is as follows:

[0035] It is composed of modified polypropylene film with a melt index of 50g / 10min and glass fibers with a linear density of 2280-2520tex, 8 beams, and a length of 5mm at a ratio of 5:5.

[0036] The structure o...

Embodiment 2

[0043] A kind of paper honeycomb composite board with strong bonding and high sound absorption, which can be unwound by 120g / m from bottom to top 2 Black hot-rolled polyethylene terephthalate non-woven fabric, 10g / 10min modified polypropylene film A7, place prepreg 5, and then unwind glass fiber reinforced polypropylene fiber composite material GMT2, 40g / 10min modified polypropylene film B1, place 25mm thick triangular honeycomb core material 6, unwind 40g / 10min modified polypropylene film B1, glass fiber reinforced polypropylene fiber composite material GMT2, place prepreg 5, and finally put Roll 50g / m 2 Composite polypropylene film C8.

[0044] The structure of prepreg 5 is as follows:

[0045] It is made of modified polypropylene film with a melt index of 100g / 10min and glass fibers with a linear density of 2280-2520tex, 8 beams, and a length of 5mm at a ratio of 5:5.

[0046] The structure of glass fiber reinforced polypropylene fiber composite GMT2 is as follows:

[...

Embodiment 3

[0053] A kind of paper honeycomb composite board with strong bonding and high sound absorption, which can be unwound by 100g / m from bottom to top 2 Black hot-rolled polyethylene terephthalate non-woven fabric, 5 / min modified ethylene-acrylic acid copolymer film A7, place prepreg 5, and then unwind glass fiber reinforced polypropylene fiber composite material GMT2 , 50g / 10min modified ethylene-acrylic acid copolymer film B1, place corrugated honeycomb core material 6 with a thickness of 15mm, unwind 50g / 10min modified ethylene-acrylic acid copolymer film B1, glass fiber reinforced polypropylene fiber composite material GMT2, place prepreg 5, and finally unwind 50g / m 2 Modified polyethylene film C8 composite.

[0054] The structure of prepreg 5 is as follows:

[0055] Modified polypropylene film with a melt index of 75g / 10min and glass fiber with a linear density of 2280-2520tex, 8 beams, and a length of 5mm in a ratio of 5:5.

[0056] The structure of glass fiber reinforced ...

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Abstract

The invention discloses an expandable high-bonding and high-sound-absorption paper honeycomb composite board and a manufacturing method thereof. The composite board is sequentially compounded by bottom fabric, an adhesive film A, a prepreg, a glass fiber reinforcement polypropylene fiber composite material GMT, an adhesive film B, a honeycomb core material, an adhesive film B, a glass fiber reinforcement polypropylene fiber composite material GMT, a prepreg and an adhesive film C from bottom to top. According to the expandable high-bonding and high-sound-absorption paper honeycomb composite board and the manufacturing method thereof, a rivet type bonding structure is arranged between the adhesive film B and the honeycomb core material, the peel strength between the upper layer and the middle layer and between the middle layer and the lower layer of the product can be enhanced, the overall rigidity is improved, and the problem that an original patented product is not plump in forming during forming, and thus glass fibers can be exposed easily is solved through the layer of the additionally-arranged GMT.

Description

technical field [0001] The invention relates to an expandable paper honeycomb composite board and a manufacturing method thereof, in particular to an expandable, strongly bonded, high sound-absorbing paper honeycomb composite board for automotive interior materials and a manufacturing method thereof. Background technique [0002] Paper honeycomb products are widely used in the packaging industry, and its unique hollow structure endows the products with special properties - light weight and high strength. When the paper honeycomb surface is compounded with other materials, such as thermoplastic resin, the strength of the paper honeycomb composite board will be greatly improved. The characteristics of high strength, light weight and easy forming of paper honeycomb composite materials make it widely used in rail transit interiors in my country, such as spare tire covers, coat racks, sunroof sliders and other parts. [0003] Paper honeycomb composite panels mainly include dry p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/08B32B17/02B32B27/02B32B27/32B32B17/04B32B17/12B32B5/26B32B27/04B32B7/10B32B3/12B32B37/06B32B37/10B32B37/08B32B43/00
CPCB32B3/12B32B5/08B32B5/26B32B7/10B32B17/02B32B17/04B32B17/067B32B27/32B32B37/06B32B37/08B32B37/10B32B43/003B32B2260/021B32B2260/046B32B2262/0253B32B2262/101B32B2262/14
Inventor 赵涛卢成勇楼娣周立方腾飞朱艳妍马国维
Owner 浙江华江科技股份有限公司
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