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Method for producing automobile interior roof

A production method and technology for automotive interiors, applied in the field of automotive interiors, can solve problems such as heavy product weight, endangering human health, and polluting the environment, and achieve the effects of improving quality, lowering costs, and reducing operating procedures

Active Publication Date: 2013-04-17
YANTAI ZHENGHAI HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a kind of production method of automobile interior ceiling, mainly solve the problem of environmental pollution, harm to human health and heavy product weight, not easy in the existing production process of automobile interior ceiling. Conducive to recycling and environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1, prepare glued film and fiber felt, glued film is placed in the extruder fully with 35% ethylene acrylic acid copolymer, 62% low-density polyethylene, 3% slippery agent according to the required weight, Under the process conditions of 180-260 ℃, it is made by extrusion casting and winding; the fiber mat is made of 45% low melting point PP fiber and 55% polyester fiber by needle punching method;

[0013] The high-strength PU hard foam sheet with a density of 16kg / m3 is heated and compounded on the compounding equipment with the adhesive film and the needle-punched fiber mat to ensure that the adhesive film is softened and nearly melted with the PU hard foam sheet. For compounding, the temperature of the upper and lower heating plates under the process conditions is 180-220 °C and 160-200 °C respectively, and the production speed is 5-7 m / min. The above parameters are different from the equipment, and the quality is guaranteed to complete the base material com...

Embodiment 2

[0014] Embodiment 2, with embodiment 1, difference is glued film and fiber mat, glued film is by the weight of actual need, and the slippery agent of 25% ethylene acrylic acid copolymer, 70% low-density polyethylene, 5% is fully Mixed and placed in the extruder, under the process conditions of 180-260 ° C, it is rolled up by extrusion casting; the fiber mat is made of 50% low-melting PP fiber and 50% polyester fiber through the method of needle punching production.

Embodiment 3

[0015] Embodiment 3, with embodiment 1, 2, difference is glued film, glued film is by the weight of actual need, the ethylene acrylic acid copolymer of 45%, 50% low-density polyethylene, the smooth agent of 5% are fully mixed Placed in the extruder, under the process conditions of 180-260 ℃, it is rolled by extrusion casting.

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PUM

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Abstract

The invention discloses a method for producing an automobile interior roof, which is characterized by comprising the following steps of: compounding a fibrofelt prepared by needling low melting point polypropylene (PP) fibers and polyethylene (PET) fibers through a needling method on upper and lower surfaces of an ultralow-density and high-strength polyurethane (PU) hard-foam sheet respectively by using adhesive films so as to form a base material; heating, softening and expanding the base material, and performing mould pressing compounding with a surface decorated layer; removing waste edgesby using water cutting, thermal cutting or other cutting methods; and gluing accessories, and trimming the edges to obtain a finished roof product. The finished roof product has the obvious characteristics of light weight of 600-750g / m<2>, high rigidity, no deformation, good sound-absorbing property, no odor, stable properties, safety and environmental friendliness, and is suitable to serve as the interior roof of a passenger vehicle.

Description

Technical field: [0001] The invention relates to the technical field of automobile interior decoration, in particular to a production method of an automobile interior decoration ceiling, which is suitable for the interior decoration ceiling of passenger cars. Background technique: [0002] PU foam sheet is a commonly used high-quality and cheap general-purpose base material for ceiling interiors. The general density is between 33-40kg / m3, and most of them use glass fiber-assisted PU sheets to meet the rigidity of the ceiling; currently, there are There are two main types of ceiling production processes: wet process and dry process. The wet process is usually used in high-end cars, and its product size is stable, but it is environmentally friendly due to thermosetting recycling. The dry process is the main process method for ceiling production. It is simple to operate and relatively easy to control, and is preferred by most interior decoration manufacturers. Its structure is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R13/02B32B27/02B32B27/08B32B27/12B32B27/18B32B27/40
Inventor 吕文君朱维珍单如坤张卫红李光福
Owner YANTAI ZHENGHAI HIGH TECH