CN101618698A - Automotive interior roof and production method thereof - Google Patents

Abstract

The invention discloses an automotive interior roof and a production method thereof, the roof takes honeycomb paper core and polyurethane materials with reinforced glass felt as a framework, is produced by adopting a pray molding process of the polyurethane, the products has light weight, good rigidity, and good effects of sound absorption, heat insulation and decoration, and are beneficial for environmental protection at the same time.

Description

A kind of automotive interior roof and production method thereof

Technical field:

The present invention relates to the automotive upholstery technical field, is a kind of automotive interior roof and production method thereof specifically.

Background technology:

Automotive interior roof is installed on top, vehicle drive cabin, plays the effect of heat insulation, sound insulation and beautifying and decorating.More and more pursuing High Performance, environment-friendly type, energy-saving, lightweight, personalized epoch, the interior trim of automobile is the same with the profile of automobile, becomes the key factor that people choose automobile.Therefore personalized trend is more and more stronger, also more and more higher to the requirement of automotive upholstery.In existing panorama skylight ceiling, MPV vehicle ceiling technology, low grammes per square metre, high strength, index such as ornamental become bottleneck, are restricting the development of ceiling.

This class ceiling has three kinds of structures at present, and the key distinction is skeleton, and its structure and operational path are as follows:

(1) soft PU skeleton: the centre is a semi-rigid PU foam, and there is fiberglass layer on both sides, and outermost is respectively the facial ornament layer in front and the nonwoven layer at the back side.Its production technology of the ceiling of this structure is: the PU cystosepiment of at first preparing density and size conforms product requirement, two sides at the PU cystosepiment applies the last layer polyurethane adhesive and sprays water by roller glue or spray glue, order according to nonwoven fabrics, glass, PU plate, glass, nonwoven fabrics is completed, be put on the heated mold, the mould closure, the polyurethane adhesive on PU plate surface and water reaction, foamed solidification, these several layer materials are sticked together, then composite material.The major defect of this structure is the problem that the ceiling bending appears in poor rigidity, entrucking process easily.

(2) SMC (glass-felt plastic) skeleton: this ceiling directly forms with the mold pressing under High Temperature High Pressure of SMC sheet material, then composite material.The major defect of this structure is that product weight is big, and production and fitting process labour intensity are big, the sound-absorption and heat-insulation weak effect.

(3) chassis less construction: this ceiling directly sticks on the facial ornament layer on the roof panel beating exactly, this technology is mainly seen in low-grade vehicle, sound insulation, effect of heat insulation are poor, decorative effect is also bad, and there is deletrious volatile matter because in taping process, use adhesion agent, the health that is unfavorable for driver and crew, rarely found now.

Summary of the invention:

The objective of the invention is to overcome the deficiency of above-mentioned various ceilings, provide a kind of and have lighter weight, superior stiffness simultaneously, and the automotive interior roof of good sound absorption heat-proof quality.

Another object of the present invention provides a kind of production method of automotive interior roof.

The present invention has solved mainly that existing automotive interior roof poor rigidity, weight are big, sound-absorption and heat-insulation weak effect and be unfavorable for problem such as health.

In order to achieve the above object, the present invention is achieved in that a kind of automotive interior roof, its special character is to be in the middle of the ceiling pory honeycomb paper, honeycomb paper be respectively up and down the layer of polyurethane that the glass felt strengthens, on the layer of polyurethane of visible surface, establish the facial ornament layer.

The production method of a kind of automotive interior roof of the present invention, its special character are that it comprises following processing step:

The a material is prepared: select, grammes per square metre 150-450g/m good with the polyurethane compatibility for use ²Glass chopped strand mats, the honeycomb paper of thickness 5-15mm, cut into suitable dimensions as required, good according to the serial arrangement of glass chopped strand mats, honeycomb paper, glass chopped strand mats, fix;

B spraying polyurethane slurry: distinguishing the spraying polyurethane slurry on 2 layers of glass chopped strand mats up and down, spraying is even, and the quantity for spray of polyurethane slurry is 200-600g/m ²

The c foaming: will spray good material and put into forming mould, matched moulds, pressurize moulding, mold temperature 80-130 degree centigrade, clamping pressure 1.0-5.0Mpa, pressurize was opened mould after 60～180 seconds, took out product;

D removes slitter edge: remove slitter edge, obtain the ceiling skeleton;

E facial ornament laminating closes: needs on the surface of ceiling skeleton spray glue on the position of compound facial ornament layer, carries out the facial ornament layered material and fit, and the mold temperature of applying: 80-120 ℃, laminate pressure: 0.5-2Mpa, applying time: 30-60 second;

F facial ornament layered material finishing: remove unnecessary facial ornament layered material;

G puts check in order: put lateral opening burr in order, check back warehouse-in.

Compared with the prior art a kind of automotive interior roof of the present invention and production method thereof have outstanding substantive distinguishing features and marked improvement: in light weight, the good rigidly of product, and sound-absorption and heat-insulation, and have the excellent decoration effect, be beneficial to environmental protection simultaneously.

Description of drawings:

Fig. 1 is a structural representation of the present invention.

The specific embodiment:

In order to understand better and to implement, provide specific embodiment below in conjunction with accompanying drawing and describe a kind of automotive interior roof of the present invention and production method thereof in detail.

Embodiment 1, referring to Fig. 1, is example with the size of ceiling specification: L1785*W1193MM, ceiling skylight opening: L1178*W805MM, and employing is 280g/m with the good grammes per square metre of polyurethane compatibility ²Pulvis glass chopped strand mats, the honeycomb paper that thickness is 7mm, material is cut by the ceiling size as required, and according to the order of pulvis glass chopped strand mats, honeycomb paper, pulvis glass chopped strand mats, fitly put, and fixes; By robot gripping's material and move under the spray head of polyurethane foam equipment, the spraying polyurethane slurries respectively on 2 surfaces up and down of above-mentioned material by robot control running orbit, can be guaranteed the spraying homogeneity of polyurethane slurry, and quantity for spray is single face 350g/m ²By robot above-mentioned material is carried to the forming mould position again, is placed on the bed die, matched moulds, pressurize, polyurethane slurry generation foamable reaction, 120 degrees centigrade of mold temperatures, clamping pressure 4.0Mpa, pressurize die sinking after 120 seconds; Remove the slitter edge of goods and the material of positions such as middle N/R skylight opening, grip hole with die cutting die, obtain the ceiling skeleton; The position spray polyurethane adhesive that needs compound facial ornament layer on the surface of ceiling skeleton carries out the facial ornament layered material in mould and fits, and the mold temperature of applying is 120 ℃, laminate pressure 3.0Mpa, applying time: 45 seconds; Reserve the position that needs bound edge then, N/R facial ornament layered material is cut away by water; Need the position brush coating bound edge of bound edge, simply putting lateral opening burr, check back packing warehouse-in in order.

Embodiment 2, adopt, grammes per square metre 150g/m good with the polyurethane compatibility ²Glass chopped strand mats, the honeycomb paper of thickness 15mm, cut into suitable dimensions as required, serial arrangement according to glass chopped strand mats, honeycomb paper, glass chopped strand mats is good, fix, difference spraying polyurethane slurry on following thereon two faces, adopt the mode of mobile material to guarantee that the polyurethane slurry spraying on glass surface is even, the quantity for spray of polyurethane slurry is 200g/m ²The material that spraying is good is put into forming mould, matched moulds, pressurize moulding, and 80 degrees centigrade of mold temperatures, clamping pressure 1.0Mpa, pressurize was opened mould after 180 seconds, took out product, and slitter edge is removed in the water cutting, obtains the ceiling skeleton; The position spray polyurethane adhesive that needs compound facial ornament layer on the surface of ceiling skeleton, carrying out the facial ornament layered material fits, the mold temperature of fitting: 80 ℃, laminate pressure: 0.5Mpa, the applying time: 60 seconds, need the position brush coating bound edge of bound edge by die-cut except that unnecessary facial ornament layered material, simply putting lateral opening burr, check back packing warehouse-in in order.

Embodiment 3, adopt, grammes per square metre 450g/m good with the polyurethane compatibility ²Glass chopped strand mats, the honeycomb paper of thickness 5mm, cut into suitable dimensions as required, serial arrangement according to glass chopped strand mats, honeycomb paper, glass chopped strand mats is good, fix, descend difference spraying polyurethane slurry on the two sides thereon, adopt the mode of mobile shower nozzle to guarantee that the polyurethane slurry spraying on glass surface is even, the quantity for spray of polyurethane slurry is 600g/m ²The material that spraying is good is put into forming mould, matched moulds, pressurize moulding, 130 degrees centigrade of mold temperatures, clamping pressure 5.0Mpa, pressurize was opened mould after 60 seconds, take out product, remove slitter edge, obtain the ceiling skeleton, need the position spray polyurethane adhesive of compound facial ornament layer on the surface of ceiling skeleton, carry out the facial ornament layered material and fit the mold temperature of applying: 120 ℃, laminate pressure: 2Mpa, the applying time: 30 seconds, remove unnecessary facial ornament layered material, the lateral opening burr of simple arrangement, check back warehouse-in.

In the middle of the automotive interior roof of being produced by the foregoing description be pory honeycomb paper 1, honeycomb paper 1 be respectively up and down the layer of polyurethane 2,3 of glass felt enhancing, on the layer of polyurethane 3 of visible surface, be facial ornament layer 4.

The ceiling assembly that the foregoing description is made during use is assembled to it on panel beating of car crust and gets final product.

Claims (2)

1, a kind of automotive interior roof is characterized in that being in the middle of the ceiling pory honeycomb paper (1), honeycomb paper (1) be respectively up and down the layer of polyurethane (2,3) that the glass felt strengthens, on the layer of polyurethane (3) of visible surface, establish facial ornament layer (4).

2, the production method of a kind of automotive interior roof of claim 1 is characterized in that it comprises following processing step:

The a material is prepared: select, grammes per square metre 150-450g/m good with the polyurethane compatibility for use ²Glass chopped strand mats, the honeycomb paper of thickness 5-15mm, cut into suitable dimensions as required, good according to the serial arrangement of glass chopped strand mats, honeycomb paper, glass chopped strand mats, fix;

B spraying polyurethane slurry: distinguishing the spraying polyurethane slurry on 2 layers of glass chopped strand mats up and down, spraying is even, and the quantity for spray of polyurethane slurry is 200-600g/m ²

The c foaming: will spray good material and put into forming mould, matched moulds, pressurize moulding, mold temperature 80-130 degree centigrade, clamping pressure 1.0-5.0Mpa, pressurize was opened mould after 60～180 seconds, took out product;

D removes slitter edge: remove slitter edge, obtain the ceiling skeleton;

E facial ornament laminating closes: needs on the surface of ceiling skeleton spray glue on the position of compound facial ornament layer, carries out the facial ornament layered material and fit, and the mold temperature of applying: 80-120 ℃, laminate pressure: 0.5-2Mpa, applying time: 30-60 second;

F facial ornament layered material finishing: remove unnecessary facial ornament layered material;

G puts check in order: put lateral opening burr in order, check back warehouse-in.

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