CN201900759U

CN201900759U - Automobile roof liner manufactured by one-step dry forming process

Info

Publication number: CN201900759U
Application number: CN2010202856964U
Authority: CN
Inventors: 马献国; 王晓刚; 刘自勇
Original assignee: Yanfeng Visteon Automotive Trim Systems Co Ltd
Current assignee: Yanfeng Automotive Trim Systems Co Ltd; Shanghai Yanfeng Jinqiao Automotive Trim Systems Co Ltd; Yanfeng Hainachuan Automotive Trim Systems Co Ltd
Priority date: 2010-08-09
Filing date: 2010-08-09
Publication date: 2011-07-20
Anticipated expiration: 2020-08-09

Abstract

The utility model discloses a automobile roof liner manufactured by the one-step dry forming process. The automobile roof liner comprises a PU (polyether urethane) board and a fabric, wherein the PU board is stuck to the fabric through a bonding layer, a high temperature resistant glass fiber felt locally laid is arranged between the bonding layer and the fabric, the PU board consists of a PE (polyethylene) adhesive film, a PE adhesive powder, a glass fiber, a PU foaming board and a nonwoven fabric, the underside of the PU foaming board is stuck to the glass fiber through the PE adhesive powder, and the underside of the glass fiber is cemented with the nonwoven fabric; the upside of the PU foaming board is cemented with the glass fiber, the PE adhesive powder is spread on the upside of the glass fiber, and the PE adhesive film is arranged on the PE adhesive powder. The automobile roof liner has the following advantages: the problems of dimensional stability and edge tearing process in the dry method are easily solved in structure, processing and die structure, and the optimum dry process is realized.

Description

A kind of automobile roof liner that adopts the dry method one-shot forming technique to make

Technical field

The utility model belongs to the automotive trim technical field, is specifically related to a kind of automobile roof liner that adopts the dry method one-shot forming technique to make.

Background technology

Automobile roof liner plate in the market mainly is made by two kinds of processing technologys, and a kind of is that wet method PU plate is made, and another kind is that dry method PU plate is made.Classify the contrast table of two kinds of technologies down as:

Figure 353573DEST_PATH_GSB00000465620900011

Two kinds of problems that technology exists:

1, wet processing exists spray glue or plastic roll to endanger bigger to the employee;

2, there is a technology controlling and process difficult problem in the gluing of wet processing: the uniformity of glue amount and glue;

3, there is torn edges technology (the skylight bound edge preparation) difficulty at edge, skylight in dry process;

4, there is the defective of poor dimensional stability in dry process;

Technology with regard to present wet method and dry method is compared, and the difficult point of wet method mainly concentrates on the technology of glue and the solution of technology environmental protection; Dry method concentrates on the solution of dimensional stability control and torn edges technology.

Analyze the pluses and minuses of two kinds of technologies, in conjunction with present national industry requirement, choose dry process to make the interior trim roof liner, and, realize the optimization of dry process from forming a dimensional stability difficult problem and the torn edges technology difficult problem that structure, processing and mould structure solve dry method.

The utility model content

The purpose of this utility model provides a kind of automobile roof liner that adopts the dry method one-shot forming technique to make, the problems referred to above that existing dry technique exists have been overcome, from forming a dimensional stability difficult problem and the torn edges technology difficult problem that structure, processing and mould structure solve dry method, realize the optimization of dry process.

In order to reach above-mentioned purpose of design, the technical solution adopted in the utility model is as follows:

A kind of automobile roof liner that adopts the dry method one-shot forming technique to make comprises PU plate, lining, and described PU plate also is provided with the high temperature resistant glass felt that put local shop by the bonding lining of adhesive linkage between described adhesive linkage and the lining.

Preferably, the marginal position after adhesive linkage and lining are bonding is put in described high temperature resistant glass felt shop.

Described PU plate is made up of PE glued membrane, PE rubber powder, glass, PU foaming plate and nonwoven, and PU foaming plate downside is by PE rubber powder bonded and glass fiber, glass downside cementation nonwoven; Described PU foaming plate upside cementation glass, glass upside spreading PE rubber powder, the PE rubber powder is provided with the PE glued membrane.

Also be provided with the local glass felt of laying between described glass and the nonwoven.

Also be provided with the local glass felt of laying between described PU foaming plate and the glass.

Described PU foaming plate 8 is to be mixed according to a certain percentage by combined polyether glycol, combination isocyanates, and the die sinking foaming forms.

The PE glued membrane of described PU plate upside and PE rubber powder form adhesive linkage 170 ℃～200 ℃ following fusions.

The beneficial effect of the automobile roof liner that employing dry method one-shot forming technique described in the utility model is made is: from forming a dimensional stability difficult problem and the torn edges technology difficult problem that structure, processing and mould structure solve dry method, realize the optimization of dry process.

Concrete is: 1, the deflection of product dwindles greatly, and especially the position on edge, front and back can well reach the digital-to-analogue claimed condition:

Before the improvement: forward position and front windshield are interfered; The back is along not wrapping in the back along in the sealing strip;

Improve the back: forward position and front windshield have kept good clearance distance; The back is along wrapping in the back uniformly along in the sealing strip in the treating selvedge edge;

2, the rigidity of product can finely satisfy the performance requirement of product, greatly reduces the scrap that fractures inadequately and form owing to product rigidity, and scrap is reduced to below 3% by original 30%.

3, the torn edges operation has been simplified in technological process, has directly saved cover torn edges frock and 2 operators, reduces manufacture craft, saves manpower, can raise the efficiency, and reduces cost.

Description of drawings

Fig. 1 is the schematic diagram of the automobile roof liner of the described employing dry method of the utility model embodiment one-shot forming technique making;

Fig. 2 is the sectional view of the automobile roof liner of the described employing dry method of the utility model embodiment one-shot forming technique making;

Fig. 3 is the schematic diagram of the PU plate of the automobile roof liner made of the described employing dry method of the utility model embodiment one-shot forming technique;

Fig. 4 is the schematic diagram of the PU plate of the automobile roof liner made of the described employing dry method of another embodiment of the utility model one-shot forming technique.

Among the figure: 1, PU plate; 2, lining; 3, high temperature resistant glass felt; 4, adhesive linkage; 5, PE glued membrane; 6, PE rubber powder; 7, glass; 8, PU foaming plate; 9, nonwoven; 10, glass felt.

The specific embodiment

Below in conjunction with accompanying drawing preferred embodiment of the utility model is described in further detail.

As illustrated in fig. 1 and 2, the automobile roof liner that the described employing dry method of the utility model embodiment one-shot forming technique is made, comprise PU plate 1, lining 2, described PU plate 1 is by adhesive linkage 4 bonding linings 2, also be provided with the high temperature resistant glass felt 3 that put local shop between described adhesive linkage 4 and the lining 2, high temperature resistant glass felt 3 can bear that temperature-resistant shape is shunk more than 240 ℃, by glass felt 3 as barrier paper, the lining 2 that guarantees day window position separates with adhesive linkage 4, thereby improves the performance of automobile roof liner.

The marginal position after lining 2 and PU plate 1 are bonding is put in described high temperature resistant glass felt 3 shops, especially between the lining 2 and PU plate 1 of the position, skylight of automobile roof liner.

The moulding process of described automobile roof liner is: heat-hang up the high temperature resistant glass felt of the reinforced PU plate of lining 2-lay 1-lay 3-integral heat pressure compound-cutting-assembling.

As shown in Figure 3, described PU plate 1 is made up of PE glued membrane 5, PE rubber powder 6, glass 7, PU foaming plate 8 and nonwoven 9, and PU foaming plate 8 downsides are by PE rubber powder 6 bonded and glass fibers 7, glass 7 downside cementation nonwoven 9; Described PU foaming plate 8 upside cementation glasses 7, glass 7 upside spreading PE rubber powders 6, PE rubber powder 6 is provided with PE glued membrane 5.

Described PU foaming plate 8 is to be mixed according to a certain percentage by combined polyether glycol, combination isocyanates, and the die sinking foaming finally forms density and is (35 ± 3) KG/m ³Open-cell foam structure, PU foaming plate 8 specifically is a kind of polyurethane foam; The elasticity of the PU foaming plate 8 that described this kind method is made and performance guarantee: become before the heating and behind the Product Status pressurized recovery of meeting elasticity broken powder foam can not appear, deformation guarantees more than 60% and the performance characteristic of destruction material such as broken end own do not occur.

The adhesive linkage 4 that the PE glued membrane 5 of described PU plate 1 upside and PE rubber powder 6 form 170～220 ℃ of following fusions, thereby bonding lining 2.

The laying of described PU plate 1 is in proper order: lay nonwoven 9-spreading glass 7--on nonwoven 9 spreads PU foaming plate 8-spreading glass 7-that PE rubber powder 6-lay section finishes and spreads PE rubber powder 6-and lay PE glued membrane 5, passes through technologies formation PU plates 1 such as drying tunnel heating, roller-way repoussage, cutting cut-parts then.

As shown in Figure 4, also be provided with the local glass felt of laying 10 between described glass 7 and the nonwoven 9, also be provided with the local glass felt of laying 10 between PU foaming plate 8 and the glass 7, can increase the rigidity of roof liner, make product formation rock-steady structure by glass felt 10.

During concrete enforcement, the dimensional stability optimization of automobile roof liner realizes in the following manner in the processing:

1, temperature will guarantee between (180～220) ℃ during moulding hot pressing, on heating process, to must not guarantee sallow color to occur, and be the limit to occur pale yellow, to guarantee product aging performance and sound absorption qualities.

2, raw material thickness: the basic wall thickness of ceiling will guarantee the decrement of (15～25) %.

3, the mould manufacturing improves: consider the pre-degenerative treatments of product, the angle that pre-modification is handled: (2 °～5 °), the spacing of cooling water pipe is no more than 80mm, and bore is not less than 10mm, thus the product surface temperature is not higher than 60 ℃ when guaranteeing depanning.

4, product design: basic wall thickness requires wall thickness even, if receive 2 times of the basic wall thickness of decrement of limit structure; Lock seaming edge thickness is no more than 2.5mm, and the partial structurtes of stress concentrated position are strengthened, and the size crossover position is made an accurate selection of datum level, seamlessly transits.

This specific embodiment is a preferred embodiment of the present utility model, can not limit the utility model, and concrete every rights protection scope is defined by the claims.

Claims

1. an automobile roof liner that adopts the dry method one-shot forming technique to make comprises PU plate, lining, it is characterized in that: described PU plate also is provided with the high temperature resistant glass felt that put local shop by the bonding lining of adhesive linkage between described adhesive linkage and the lining.

2. the automobile roof liner that employing dry method one-shot forming technique according to claim 1 is made is characterized in that: the marginal position after adhesive linkage and lining are bonding is put in described high temperature resistant glass felt shop.

3. the automobile roof liner that employing dry method one-shot forming technique according to claim 1 is made, it is characterized in that: described PU plate is made up of PE glued membrane, PE rubber powder, glass, PU foaming plate and nonwoven, PU foaming plate downside is by PE rubber powder bonded and glass fiber, glass downside cementation nonwoven; Described PU foaming plate upside cementation glass, glass upside spreading PE rubber powder, the PE rubber powder is provided with the PE glued membrane.

4. the automobile roof liner that employing dry method one-shot forming technique according to claim 3 is made is characterized in that: also be provided with the local glass felt of laying between described glass and the nonwoven.

5. the automobile roof liner that employing dry method one-shot forming technique according to claim 3 is made is characterized in that: also be provided with the local glass felt of laying between described PU foaming plate and the glass.