CN209718850U - A kind of ceiling with wet method of the high sound absorption-type of environmental protection - Google Patents

Abstract

The utility model provides a kind of ceiling with wet method of high sound absorption-type of environmental protection, including laminated structure and the precoat being adhered to each other, back alveolar layer, PU sheet layer, fiberglass layer, PU sheet layer, back alveolar layer, nonwoven layer and acoustical cotton layer；It is fixed between back alveolar layer and the adjacent surface layer by PA wire mesh membrane；It is fixed between the fiberglass layer and the PU sheet layer of two sides by roller glue and pure water activated adhesive.Ceiling good environmental protection described in the utility model, and the surfacing of ceiling, good with vehicle body compactness, sound absorption qualities are excellent.

Description

A kind of ceiling with wet method of the high sound absorption-type of environmental protection

Technical field

The utility model relates to automotive trim parts, the ceiling with wet method of specifically a kind of high sound absorption-type of environmental protection.

Background technique

Important component of the automotive interior roof as vehicle interior trim, perceived quality, comfort, environment-friendly type require to get over Come higher, while ceiling can also reduce interior noise and obstruct the important function of the outer heat transfer of vehicle.Existing ceiling with wet method, fabric It is bonded with solvent glue sticking, hot-melt adhesive powder, aqueous glue sticking etc., above several adhesives have the following disadvantages or defect, such as Solvent adhesive bonding organic solvent volatility is big, the feature of environmental protection is poor；Hot-melt adhesive powder dusting difficulty, uneven, fabric poor flatness, beauty Property is poor；The most important problem of water-base cement be the peeling force of fabric is poor, cementability loosely, it is sagging to easily lead to fabric.

Existing ceiling production method is as follows: 1, fabric and PU plate or PP plate are compound by the mould pressing method of the cold mould of hot material At although production process is simple, cost of raw material height, the poor dimensional stability of dry method ceiling, stretching depth be shallower, mouldability It is poor, poor with the matching of Surrounding Parts；2, fabric steeps, fabric compound by flame and skeleton with back and is glued by solvent adhesive It connects, main problem is that flame combined pollution environment, residual volatile species are big, and production process discharges a large amount of organic solvents and causes vehicle Between it is odor profiles it is big, environment-friendly type is poor, while the smell of product itself, VOC are also poor, are difficult to meet main engine plants' requirement；3, fabric with Skeleton is compound by hot-melt adhesive powder hot pressing, and it is uneven to be primarily present complex procedures, dusting, will cause the aesthetics problem of fabric, Rubber powder also results in fabric poor flatness simultaneously, and sound absorption qualities reduce；4, fabric is carried out with skeleton by water-base cement be bonded, mainly There are fabric splitting is poor, fabric is easily sagging, causes aesthetics difference problem.

Utility model content

The utility model aim is to provide a kind of ceiling with wet method of high sound absorption-type of environmental protection, for solving traditional vehicle top Canopy production efficiency is low, smell is easily exceeded, cementability is poor, fabric out-of-flatness, aesthetics are poor, at high cost, matching, sound absorption qualities are poor Technical problem.

To reach above-mentioned purpose, the utility model proposes following technical solutions:

A kind of ceiling with wet method of the high sound absorption-type of environmental protection, including laminated structure and the precoat being adhered to each other, back alveolar layer, PU Sheet layer, fiberglass layer, PU sheet layer, back alveolar layer, nonwoven layer and acoustical cotton layer；Between back alveolar layer and the adjacent surface layer It is fixed by PA wire mesh membrane；It is fixed between the fiberglass layer and the PU sheet layer of two sides by roller glue and pure water activated adhesive.

Further, in the present invention, bound edge is provided on the precoat, the bound edge package above layers The marginal adhesion of end face and bound edge is in the surface for being located at close acoustical cotton side on harmless layer of cloth.

Further, in the present invention, the acoustical cotton layer is pasted between nonwoven layer by ultrasonic bonding It is fixed.

The utility model has the advantages that

From the above technical scheme, the technical solution of the utility model provides a kind of environment-friendly type wet processing ceiling, The ceiling is compared and is had the advantage that with traditional ceiling

1, precoat and back bubble are bonded with PA wire mesh membrane, solve in precoat flame recombination process and generates flue gas The problem of, reduce the residual of pollution.

2, PA wire mesh membrane bonding ensure that fabric and back steep the full of the gas permeability and fabric being bonded, and improve the suction of ceiling Sound performance.

3, precoat is Nian Jie by PA silk screen glue film with PU casing play (the PU sheet layer including fiberglass layer and two sides), solves The problem that fabric need to cause solvent to volatilize by spraying solvent glue sticking in existing wet processing, to ceiling VOC, smell all right and wrong Often big promotion, meets main engine plants VOC and odor requirements.

4, the back bubble between nonwoven layer and PU casing play further improves the sound absorption qualities of ceiling.

5, using PA silk screen glue film compound sticking fabric and casing play, reduce workshop condition pollution, also guarantee that product does not have There are volatile hazardous substances, meets the discharge and environmental requirement of automobile industry；Simultaneously previous glue spraying, heating, molding compound three Procedure is optimized for the compound procedure of hot pressing, reduces operator's quantity, saves labour, improves production Efficiency and stability.

It should be appreciated that as long as aforementioned concepts and all combinations additionally conceived described in greater detail below are at this It can be viewed as a part of the utility model theme of the disclosure in the case that the design of sample is not conflicting.

The foregoing and other side of the utility model introduction can be more fully appreciated from the following description in conjunction with attached drawing Face, embodiment and feature.The features and/or benefits of other additional aspects such as illustrative embodiments of the utility model To be obvious in the following description, or will be learnt in the practice by the specific embodiment instructed according to the utility model.

Detailed description of the invention

Attached drawing is not intended to drawn to scale.In the accompanying drawings, identical or nearly identical group each of is shown in each figure It can be indicated by the same numeral at part.For clarity, in each figure, not each component part is labeled. Now, by by example and be described in reference to the drawings the utility model various aspects embodiment, in which:

Fig. 1 is the overall structure from the ceiling trim panel of the upper end overlook view of one embodiment according to the present utility model Cross-sectional view；

Fig. 2 is the cross-sectional view of the top decoration board from the front 1-1 of one embodiment according to the present utility model；

Fig. 3 is the cross-sectional view of the top decoration board from the side 2-2 of one embodiment according to the present utility model；

Fig. 4 is section view partial enlarged view identical with Fig. 3, shows fabric, back bubble, skeleton, PA wire mesh membrane, formed nonwoven The state of cloth position.

In figure, the meaning of each appended drawing reference is as follows:

Sun-shading board hanger mounting hole 1, ceiling light mounting hole 2, acoustical cotton layer 3, nonwoven layer 4, precoat 5, PU sheet layer 6, Fiberglass layer 7, PA silk screen film layer 8, back alveolar layer 9.

Specific embodiment

In order to know more about the technology contents of the utility model, spy lifts specific embodiment and institute's accompanying drawings is cooperated to be described as follows.

It is described with reference to the various aspects of the utility model in the disclosure, shown in the drawings of the implementation of many explanations Example.It is not intended to cover all aspects of the utility model for embodiment of the disclosure.It should be appreciated that a variety of structures presented hereinbefore Think and embodiment, and those of describe in more detail below design and embodiment can in many ways in any one Implement, this is because conception and embodiment disclosed in the utility model are not limited to any embodiment.In addition, this is practical Novel disclosed some aspects can be used alone, or with it is disclosed by the utility model it is otherwise it is any it is appropriately combined come It uses.

A kind of automobile-used ceiling as shown in Figs 1-4, including laminated structure and the precoat 5 being adhered to each other, back alveolar layer 9, PU sheet layer 6, fiberglass layer 7, PU sheet layer 6, back alveolar layer 9, nonwoven layer 4 and acoustical cotton layer 3；The back alveolar layer 9 with it is adjacent Surface layer between fixed by PA wire mesh membrane；It is activated between the fiberglass layer 7 and the PU sheet layer 6 of two sides by roller glue and pure water Binder is fixed.

In above-mentioned ceiling, PU sheet layer 6, fiberglass layer 7, PU sheet layer 6 form skeleton, and the skeleton is more stiffening, molding effect Fruit is good and is unlikely to deform.

It is be bonded to pass through PA wire mesh membrane on the basis of above-mentioned skeleton, between back alveolar layer 9 and adjacent surface layer, not only the feature of environmental protection It can be promoted, and ensure that the uniformity of gas permeability, the plumpness of fabric and bonding that back steeps, be the flatness of product, inhale Audio fruit provides sound assurance.

The production method of above-mentioned ceiling, comprises the following steps that:

A feeding: the PU sheet material for cutting size is put into the automatic transmission belt of feeder and prepares feeding；

B roller glue: the material sent by transmission belt is by the rotation of roller rubber tire automatically in PU sheet material upper roller glue；

C spray: the PU sheet surface complete to roller glue sprays a certain amount of pure water activated adhesive；

D is laid with glass: the PU sheet material after activation is transmitted directly on workbench, glass fiber felt is laid on PU sheet material, in glass PU sheet material after placing a piece of activation on fine felt again；

E skeleton forming: the PU sheet material feeding mold progress hot pressing that centre has been coated glass fiber felt is compound, heating temperature 180 ~220 DEG C, 60~90s of pressure maintaining, it is sent into cooled region later and carries out cooling and shaping；

The molding of f fabric: the good PA wire mesh membrane of Jiang Beipao, gas permeability and precoat 5 are neatly put into hot pressing die in order, 180~220 DEG C of heating temperature, 60~90s of pressure maintaining, closure heating tooling, completion is compounded to form molding precoat；

G nonwoven molding with cloth: the good PA wire mesh membrane of Jiang Beipao, gas permeability and non-woven fabrics are neatly put into hot pressing die in order In, 180~220 DEG C of heating temperature, 60~90s of pressure maintaining, closure heating tooling, completion is compounded to form formed nonwoven layer of cloth；

The first type of h ceiling: formed nonwoven layer of cloth, PA wire mesh membrane, casing play, PA wire mesh membrane, molding precoat are folded in order Put well be put into grinding tool carry out it is hot-forming, top layer is precoat 5, lowest level is nonwoven layer 4.Heating furnace temperature is controlled when molding It is multiple to complete material at 180~220 DEG C, 60~90s of heating time, 10~15MPa of clamping pressure, 45~60s of dwell time for degree It closes；The heating plate up and down of caking tooling is controlled by individual temperature control system；

The production of i finished product: being placed on the ceiling after molding on Water Cutting mold, in cutting process input Water Cutting equipment It is cut；

J bound edge: the section and marginal adhesion for wrapping up each layer with fabric are in formed nonwoven cloth surface；

K welds acoustical cotton: being bonded acoustical cotton by ultrasonic bonding at the back side of nonwoven layer 4.

PU sheet material is put into the automatic transmission belt of feeder and prepares feeding, by the rotation of roller rubber tire automatically in PU by embodiment 1 Sheet material upper roller glue, the PU sheet surface complete to roller glue spray a certain amount of pure water and activate glue；PU sheet material after activation directly transmits Onto workbench, it is laid with glass fiber felt on PU sheet material, the PU sheet material after placing a piece of activation again on glass fiber felt will coat glass The PU sheet material of fine felt be fed together mold carry out hot pressing it is compound, 180~220 DEG C of heating temperature, 60~90s of pressure maintaining is sent into later Cooled region carries out cooling and shaping and forms ceiling skeleton；Back bubble, PA wire mesh membrane and precoat 5 are neatly put into hot-die in order In tool, 180~220 DEG C of heating temperature, 60~90s of pressure maintaining, closure heating tooling forms molding precoat；By back bubble, gas permeability Good PA wire mesh membrane and non-woven fabrics is neatly put into hot pressing die in order, and 180~220 DEG C of heating temperature, 60~90s of pressure maintaining, Closure heating tooling, completion are compounded to form formed nonwoven layer of cloth；By formed nonwoven layer of cloth, PA wire mesh membrane, casing play, PA silk screen Film, molding precoat stack in order be put into grinding tool carry out it is hot-forming, top layer is precoat 5, lowest level is non-woven fabrics Layer 4.180~220 DEG C of heating temperature, 60~90s of heating time, 10~15MPa of clamping pressure are controlled when molding, the dwell time 45 ~60s completes Material cladding；Ceiling blank is placed on Water Cutting mold and is cut；The ceiling cut carries out bound edge And be bonded acoustical cotton by ultrasonic bonding at the formed nonwoven cloth back side, complete top can be produced after the above process Canopy.

Embodiment 2, except that heating temperature is 180 DEG C when skeleton forming, heats 90s with embodiment 1；Fabric When molding, heating temperature is 180 DEG C, heats 90s；When ceiling forms, 180 DEG C of heating temperature, heating time 90s, clamping pressure 15MPa, dwell time 60s complete the compound of three kinds of materials, and mold is opened after the time for reaching setting and takes out product.

Embodiment 3, except that heating temperature is 220 DEG C when skeleton forming, heats 60s with embodiment 1；Fabric When molding, heating temperature is 220 DEG C, heats 60s；When ceiling forms, 220 DEG C of heating temperature, heating time 60s, clamping pressure 10MPa, dwell time 45s complete Material cladding, and mold is opened after the time for reaching setting and takes out product.

The product that above-mentioned technique is prepared, whole feel is stiffening, surfacing, and smell is small.On this basis, it installs such as Sun-shading board hanger mounting hole 1 and ceiling light mounting hole 2 shown in Fig. 1-3, and ceiling is installed on vehicle, compactness is good, and right The noise of vehicle interior perception decreased more in the past.

Although the utility model has been disclosed with preferred embodiment as above, so it is not intended to limit the utility model.This reality It is without departing from the spirit and scope of the utility model, each when that can make with novel those of ordinary skill in the art Kind changes and retouches.Therefore, the protection scope of the utility model is subject to view those as defined in claim.

Claims (3)

1. a kind of ceiling with wet method of the high sound absorption-type of environmental protection, it is characterised in that: including laminated structure and the precoat being adhered to each other, Carry on the back alveolar layer, PU sheet layer, fiberglass layer, PU sheet layer, back alveolar layer, nonwoven layer and acoustical cotton layer；The back alveolar layer with it is adjacent Surface layer between fixed by PA wire mesh membrane；It is viscous by roller glue and pure water activation between the fiberglass layer and the PU sheet layer of two sides Knot agent is fixed.

2. the ceiling with wet method of the high sound absorption-type of environmental protection according to claim 1, it is characterised in that: be provided on the precoat The marginal adhesion of bound edge, the end faces of bound edge package above layers and bound edge in nonwoven layer in being located at close to acoustical cotton side Surface.

3. the ceiling with wet method of the high sound absorption-type of environmental protection according to claim 1, it is characterised in that: the acoustical cotton layer and nonwoven It is pasted and is fixed by ultrasonic bonding between layer of cloth.