Modified cotton fiber felt and application thereof

A technology for modifying cotton and fiber mats, applied in the field of modified cotton fiber mats, can solve problems such as inability to bond with other materials, inability to form, and achieve the effects of reducing material costs, odors, and costs.

Active Publication Date: 2012-10-10
NINGBO RANDY AUTOMOBILE PARTS IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The present invention mainly solves the problem that the cotton fiber felt (including the regenerated cotton fiber felt supported by cotton cloth leftovers and recovered cotton cloth after opening) cannot be formed without adhesive and cannot be bonded with other materials, and improves the cotton fiber felt forming, Adhesive and composite bonding strength and its environmental protection characteristics, and reduce production and use costs

Method used

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  • Modified cotton fiber felt and application thereof
  • Modified cotton fiber felt and application thereof
  • Modified cotton fiber felt and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Mix 20% cotton fiber, 40% low-melting point PET fiber, and 40% polypropylene fiber in proportion, and then go through pre-opening, fine opening, carding, web laying, pre-punching, double-punching, ironing, and then cut and pack That is, the modified cotton fiber felt is obtained.

[0058] It is used to prepare sound-insulating and heat-insulating pads. The modified cotton fiber felt is sent to a far-infrared heating furnace, and the far-infrared hot air is circulated and heated. The heating temperature is 250°C, and the heating time is 30 seconds. Then it is sent into the mold, and the cotton fiber is modified by heating It is molded under the action of a press, and at the same time cooled by the mold (cooling water is passed through the mold) and formed to obtain a sound-insulating and heat-insulating pad. The product is pollution-free and has good fastness. Use an acoustic tester (8-channel standing wave tube) to test its sound-absorbing performance, as attached Im...

Embodiment 2

[0060] Mix 90% cotton fiber, 5% low-melting point PET fiber, and 5% polypropylene fiber in proportion, and then go through opening, fine opening, carding, web laying, pre-punching, re-punching, ironing, and then slitting and packing. The modified cotton fiber mat is obtained.

[0061] It is used to prepare sound-insulating pad parts, and the modified cotton fiber felt is sent to a far-infrared heating furnace, heated by far-infrared hot air circulation, the heating temperature is 200 ° C, and the heating time is 60 seconds. Rubber and Plastic Co., Ltd.) is also moved into the far-infrared heating furnace, and the far-infrared hot air is circulated for heating. The heating temperature is 200 ° C, and the heating time is 20 seconds. The heated EVA soft board is sent into the mold and spread on the lower mold. The modified cotton fiber felt is sent between the upper mold and the lower mold of the mold, and spread on the heated EVA soft board, the press is started, molded under th...

Embodiment 3

[0063] Mix 50% cotton fiber, 30% low-melting point PET fiber, and 20% polypropylene fiber in proportion, and then go through pre-opening, fine opening, carding, web laying, pre-punching, double-punching, ironing, and then cut and pack That is, the modified cotton fiber felt is obtained.

[0064] It is used to prepare sound-insulating and heat-insulating pads, and the modified cotton fiber mat is sent to a far-infrared heating furnace, heated by far-infrared hot air circulation, the heating temperature is 250 ° C, and the heating time is 30 seconds. At the same time, PP wood powder board (Jiangsu Zhong Hong Machinery Co., Ltd.) is also moved into the far-infrared heating furnace, and the far-infrared hot air is circulated for heating. The heating temperature is 250°C and the heating time is 30 seconds. The final modified cotton fiber felt is sent between the upper mold and the lower mold of the mould, and spread on the heated PP wood powder board, the press is started, molded u...

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Abstract

The invention discloses a modified cotton fiber felt which is made from the following uniformly-mixed components in percentage by mass: 20-90% of cotton fibers, 5-40% of low melting point polyethylene terephthalate (PET) fibers and 5-40% of polypropylene fibers. The invention also discloses application of the modified cotton fiber felt to preparing sound insulating pads or rigid plates. The modified cotton fiber felt provided by the invention can reduce the odor, enhance the environmental friendliness and reduce the cost. After adding a certain proportion of low melting point fibers, any other adhesion agent or resin is not needed in molding and composition; and therefore, the modified cotton fiber felt has the advantages of no odor, easiness in the molding, low cost and high cohesive property.

Description

(1) Technical field [0001] The invention relates to a modified cotton fiber felt and its application in the preparation of sound insulation pads or rigid boards. (2) Background technology [0002] At present, in the fiercely competitive international automobile market, the comprehensive "price ratio" in terms of conventional performance of models of the same grade is getting closer and has reached a relatively high level. Therefore, improving the level of vehicle noise control has become a new focus of competition and technology development direction. In this context, the NVH (Noise / Vibration / Harshness) performance of vehicles is gradually evolving into an important design indicator, and it is also one of the vehicle performance indicators that users care about. [0003] The level of car noise control will definitely become one of the indispensable and important factors that determine the success of model development, and the noise in the engine compartment is an important ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4291D04H1/435D04H1/4382D04H1/46B32B27/12B32B37/06B32B37/10
Inventor 葛日体
Owner NINGBO RANDY AUTOMOBILE PARTS IND
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