CN113787777A - Automobile interior ceiling and production method thereof - Google Patents

Automobile interior ceiling and production method thereof Download PDF

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Publication number
CN113787777A
CN113787777A CN202111046266.6A CN202111046266A CN113787777A CN 113787777 A CN113787777 A CN 113787777A CN 202111046266 A CN202111046266 A CN 202111046266A CN 113787777 A CN113787777 A CN 113787777A
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China
Prior art keywords
layer
glue
fabric
ceiling
adhesive film
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Pending
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CN202111046266.6A
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Chinese (zh)
Inventor
隋健
李海帆
王克强
许林
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Yantai Zhenghai High Technology Co ltd
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Yantai Zhenghai High Technology Co ltd
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Priority to CN202111046266.6A priority Critical patent/CN113787777A/en
Publication of CN113787777A publication Critical patent/CN113787777A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B60R13/0212—Roof or head liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B32B2037/1215—Hot-melt adhesive
    • B32B2037/1223—Hot-melt adhesive film-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/04—Punching, slitting or perforating
    • B32B2038/047—Perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0278—Polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/003—Interior finishings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Abstract

The invention discloses an automotive interior ceiling and a production method thereof. Belongs to the field of automobile interior decoration. The structure of the fabric comprises a first non-woven fabric layer (1), a first glue film resisting layer (2), a first glass fiber felt layer (3), a first forming glue layer (4), a PU foam board layer (5), a second forming glue layer (6), a second glass fiber felt layer (7), a second glue film resisting layer (8), a second non-woven fabric layer (9), a glue film layer (10) and a fabric layer (11) from bottom to top in sequence. In the process of compounding the fabric, the hot melt adhesive film is used for replacing solvent adhesive or water-based adhesive for spraying, so that adhesive fog is prevented from being generated, the investment of adhesive spraying equipment is reduced, and the odor and VOC index of the product are better.

Description

Automobile interior ceiling and production method thereof
Technical Field
The invention relates to an automotive interior ceiling and a production method thereof, belonging to the technical field of automotive interiors.
Background
At present, the production modes of the automobile ceiling are mainly divided into a dry method and a wet method, and the wet method is divided into a one-step wet method and a two-step wet method.
The first step of the two-step wet method is to produce a ceiling framework, a first non-woven fabric layer (1), a first glue resisting layer (2), a first glass fiber felt layer (3), a first forming glue layer (4), a PU foam board layer (5), a second forming glue layer (6), a second glass fiber felt layer (7), a second glue resisting layer (8) and a second non-woven fabric layer (9) are placed in a hot die, and the forming glue is reacted and solidified through heating; and secondly, spraying glue on the framework, and compounding the fabric to obtain the ceiling body. And (5) subsequently installing accessories on the ceiling body to obtain a ceiling assembly.
The one-step wet process is to directly put various materials for producing the ceiling body, including non-woven fabrics, a glue-blocking film, a glass fiber felt, a forming glue, a PU foam board and fabrics, into a mould and obtain the ceiling body through one-step mould pressing.
Although the ceiling produced by the two-step wet method is slightly complicated in process, the forming step does not need to consider the fabric factor, the degree of freedom of the modeling design is large, the product size stability is good, the rigidity is high, the special requirements of edge covering and the like can be met, and the ceiling is accepted by more and more customers on high-grade vehicle types.
Compared with a one-step wet method, the two-step wet method increases a fabric compounding procedure. The fabric compounding process usually adopts a glue spraying process, solvent glue is generally adopted in the early stage, and water-based glue is increasingly applied in recent years.
A large amount of atomized glue solution and volatile solvent are generated in the glue spraying process of the solvent glue, and the production operation environment is relatively poor; the requirement on the production process is higher, the glue spraying area is generally required to be isolated independently, relevant equipment in the glue spraying area needs to meet the explosion-proof requirement, and the equipment investment is high. The solvent adhesive for compounding is usually a bi-component, the reaction rate is adjusted by changing the proportion of the bi-component according to the change of the environmental temperature, and the process control requirement is high.
Compared with solvent glue, the aqueous glue is improved to a certain extent, the solvent is water, the burning explosion risk caused by solvent volatilization is reduced, a large amount of atomized glue solution still exists, and the solid waste treatment still needs higher cost; and the water volatilization is slow, the water-based adhesive compounding needs higher airing temperature and longer airing time, the process conditions are relatively harsh, and the process control difficulty is higher.
For products with edge covering requirements, a robot is generally adopted to spray hot melt adhesive on an edge covering area, or solvent adhesive is adopted to brush the hot melt adhesive on the edge covering area, and the fabric edge covering is carried out by combining a tool. Because the width of the edge is narrow and the angle is large, the requirements on the precision of equipment and the viscosity of glue solution are very high.
The adhesive is formally released in national standard of adhesive volatile organic compound limit in 12 months and 1 days in 2020, the strict limit of the standard is the volatile content, and great challenges are provided for solvent adhesive and water-based adhesive.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a ceiling and a production method thereof, and the technical scheme is as follows:
the automotive interior ceiling is characterized by comprising the following materials from bottom to top in sequence: the novel ceiling structure comprises a first non-woven fabric layer, a first glue resisting layer, a first glass fiber felt layer, a first forming glue layer, a PU foam board layer, a second forming glue layer, a second glass fiber felt layer, a second glue resisting layer, a second non-woven fabric layer, a hot melt glue film layer and a fabric layer, wherein the part from the first non-woven fabric layer to the second non-woven fabric layer is of the structure of a ceiling framework, and the hot melt glue film layer is used for bonding the fabric layer and the ceiling framework.
Furthermore, the ceiling is also provided with an edge covering structure, and the fabric and the framework of the edge covering part are also bonded by hot melt adhesive films.
Further, the hot melt adhesive film is a modified polyethylene adhesive film, and the gram weight of the hot melt adhesive film is 30-60g/m 2.
Further, the hot melt adhesive film is subjected to punching treatment, and the hole pattern is a staggered longitudinal strip hole;
furthermore, the length of the hot melt adhesive film strip holes is 3-5mm, and the distance between the inner holes in the row is 5-7 mm. The row spacing is 2-4 mm.
The production method of the automotive interior ceiling comprises a skeleton forming step and a fabric compounding step and is characterized in that before the fabric compounding step, a hot melt adhesive film and a fabric are compounded together in advance, the skeleton and the fabric with the hot melt adhesive film are placed in a hot compounding mold, and the compounding is completed under the pressure maintaining condition.
Further, the process conditions of compounding the framework and the adhesive film fabric are that the temperature is 120-160 ℃, and the pressure maintaining time is 30-60 s;
further, the ceiling production also comprises an edge covering process, in the edge covering process, the framework in the edge covering area is heated, and the fabric is tightly pressed and cooled after being covered, so that edge covering is realized.
Furthermore, in the edge covering process, the heating mode of the framework in the edge covering area is non-contact radiation heating, so that the temperature of the edge covering area exceeds the softening point of the hot melt adhesive film by more than 50 ℃.
Furthermore, the heat source for radiation heating is a conformal metal block, the metal block is heated by an electric heating element or hot fluid, the temperature of the metal block is set to be 160-220 ℃, and the distance from the surface of the metal block to the surface of the framework in the edge covering area is 10-30 mm.
Compared with the prior art, the hot melt adhesive film is used for replacing solvent adhesive or water-based adhesive to bond the fabric and the framework, solvent volatilization in the production process is reduced, and the operation environment is improved. In addition, in the edge covering process, the hot melt adhesive film is directly used for edge covering of the fabric, single-component PUR adhesive is not needed, the adhesive machine and the adhesive spraying process of the PUR adhesive are omitted, the equipment investment is reduced, and the efficiency is improved. In addition, the hot melt adhesive film is used for replacing PUR adhesive, so that the odor and VOC indexes of the product can be improved.
After the adhesive film is punched, the tensile modulus of the adhesive film is reduced, the elongation of the adhesive film is increased, the hot-melt adhesive film can be suitable for ceiling products with complex shapes, composite exhaust is facilitated, the generation of defects such as wrinkles, bulges, delaminations and the like is reduced, and the product quality is improved. In addition, the rubber film strip hole parameters of the scheme ensure the elongation of the rubber film and prevent the rubber film from being broken and torn.
In the process of edge covering, the framework is heated by adopting a radiation heating mode, then the cold-pressing edge covering mode can solve the problem of stress resilience of the edge-covering fabric, and the requirement on the material is reduced, so that the edge covering of the hot melt adhesive film is realized, otherwise, the edge covering is carried out by adopting a fabric compounding mode, and the defect of glue opening caused by the retraction of the fabric due to insufficient cohesion of the hot melt adhesive film at high temperature is possibly caused.
Drawings
Fig. 1 is a structural view of a ceiling material of the present application;
FIG. 2 shows a hole pattern of the glue film of the present application.
As can be seen from fig. 2, the holes are elongated slots, the holes are spaced apart from one another in the longitudinal direction of the holes, two adjacent rows of holes are offset from one another in the width direction of the holes, and the holes in the alternate row are substantially aligned.
Detailed Description
Example 1
As shown in FIG. 1, the first nonwoven fabric 1 is 35-45g/m2 spunlace fabric, the first glue-blocking film layer 2 is 20-35g/m2 PE layer or 35-45g/m2 PE/PA/PE three-layer structure glue-blocking film, the first glass fiber felt layer 3 is 130-80 g/m2 chopped strand mat, the first molding glue layer 4 uses 40-80g/m2 polyurethane molding glue, the PU foam board layer 5 is semi-rigid foam with the density of 23-28kg/m3 and the thickness of 6-7mm, the second molding glue layer 6 uses 40-80g/m2 polyurethane molding glue, the second glass fiber felt layer 7 is 130-150g/m2 chopped strand mat, the second glue-blocking film layer 8 is 35-45g/m2 PE/PA/PE three-layer structure glue-blocking film or 20-35g/m2 PE layer, 35-45g/m2 spunlace is used as the second non-woven fabric layer 9, the hot melt adhesive film layer 10 is a modified polyethylene film with the gram weight of 35-55g/m2, the upper surface is provided with strip holes, the hole patterns and the hole positions are shown in figure 2, the length a of each strip hole is 3-5mm, the row spacing c is 2-4mm, the row inner hole spacing d is 5-7mm, and the inter-row hole spacing b is 0-2 mm. The fabric layer 11 is a knitted fabric with polyurethane flexible foam.
Firstly, pressing other materials (1-9 layers) except the adhesive film 10 and the fabric 11 into a ceiling framework through a forming mold, then placing the adhesive film 10 and the fabric 11 on the framework in a composite mold, and maintaining the mold temperature at 150 ℃ for 40s to complete fabric compounding. The glue is not suitable for solvent glue and water-based glue, glue spraying personnel and glue spraying equipment are not needed naturally, and meanwhile, glue mist is not discharged.
Comparative examples 1 to 1
The backbone was the same as in example 1, but the compounding procedure was carried out using a solvent gel, as follows.
In the glue spraying room meeting the explosion-proof requirement, two components of solvent glue A, B are mixed in a pressure tank in proportion, the solvent glue is sprayed on a framework through a single-arm 6-axis robot, and when the framework is aired to an operation window, the framework is subjected to mould pressing compounding. Need use and spout gluey equipment, spout gluey process and need 1 people to operate, the personnel need wear from inhaling formula gas mask, can produce gluey fog and discharge and solvent volatilization, and the smell and the VOC index of product are also relatively poor.
The results were immediately higher than those in example 1.
Comparative examples 1 to 2
The material structure of the product is basically the same as that of the example 1, and the production process and the process parameters are the same as those of the example 1, except that no perforation is formed on the hot melt adhesive film. As a result, the film pleating occurred in a partial area.
Because the holes are not punched, the stress of the adhesive film is overlarge in the stretching process, the elongation is undersized, and the pleating is generated at the position under the stretching action in the compounding process.
Example 2:
the basic ceiling construction is as in example 1, except that there is also a hem area. The edge covering area adopts a hot melt adhesive film for direct edge covering, and the specific operation method is that the edge cutting is finished after the ceiling framework is formed; finishing the cutting of the fabric contour after the fabrics are compounded; on the edge covering tool, a 200 ℃ radiation block is used for heating an edge covering area, so that the temperature of the material reaches more than 150 ℃ and far exceeds the softening point of the hot melt adhesive film by 110 ℃, the edge covering block without heating pushes edge covering fabric to be in contact with a framework of the edge covering area, and the edge covering is realized by maintaining pressure and cooling for 30 s.
Comparative example 2-1
The production method of the ceiling structural tube in the embodiment 2 is basically the same as that in the embodiment 2, and is different from the method that a radiation heating block is not used, the edge covering block with the temperature of 150 ℃ is adopted for directly covering edges, the edge covering block is removed after pressure maintaining for 40s, the adhesive film is in a molten state, and the fabric is locally unglued due to stress retraction.
Comparative examples 2 to 2
The ceiling is provided with an edge covering structure, and hot melt adhesive edge covering is adopted. By using the PUR hot melt adhesive, a hot melt adhesive machine and an adhesive spraying action mechanism, such as an adhesive spraying manipulator, are required.
When the PUR is sprayed with glue, the width and the track of the glue fluctuate and sometimes exceed the fabric area, so that glue yarns are exposed or glue is partially lacked. In addition, the viscosity of the glue at high temperature is very low, the edge covering area is sometimes close to a vertical surface, glue threads can flow downwards under the action of gravity, the glue is cheap, and places with the glue are not available. PUR glue itself is more expensive than hot melt glue film and bad in smell, and various problems are easily caused by using glue machine and glue spraying action device, and it is obvious that the advantage of example 2 is much more than that of example 2.

Claims (10)

1. The automotive interior ceiling is characterized by comprising the following materials from bottom to top in sequence: the novel ceiling structure comprises a first non-woven fabric layer, a first glue resisting layer, a first glass fiber felt layer, a first forming glue layer, a PU foam board layer, a second forming glue layer, a second glass fiber felt layer, a second glue resisting layer, a second non-woven fabric layer, a hot melt glue film layer and a fabric layer, wherein the part from the first non-woven fabric layer to the second non-woven fabric layer is of the structure of a ceiling framework, and the hot melt glue film layer is used for bonding the fabric layer and the ceiling framework.
2. The automotive interior ceiling as claimed in claim 1, characterized in that the ceiling is further provided with a hem structure, and the facing material of the hem portion and the framework are also bonded by a hot melt adhesive film.
3. The automotive interior ceiling as claimed in claim 1, wherein the hot melt adhesive film is a modified polyethylene adhesive film having a grammage of 30-60g/m 2.
4. The automotive interior ceiling as claimed in claim 1, wherein the hot melt adhesive film is perforated with alternating longitudinal slots.
5. The automotive interior ceiling of claim 4, wherein the hot melt adhesive film strip holes are 3-5mm long, the row inner hole spacing is 5-7mm, and the row spacing is 2-4 mm.
6. The method for manufacturing an automotive interior ceiling as claimed in claim 1, comprising a skeleton-forming step and a fabric-compounding step, wherein, prior to the fabric-compounding step, the hot-melt adhesive film and the fabric are compounded together in advance, the skeleton and the fabric with the hot-melt adhesive film are placed in a hot compounding mold, and the compounding is completed under pressure.
7. The method for producing an automotive interior ceiling as claimed in claim 6, characterized in that the process conditions for compounding the skeleton and the adhesive film fabric are that the temperature is 120-160 ℃ and the pressure holding time is 30-60 s.
8. The method of producing an automotive interior ceiling as claimed in claim 6, characterized in that the ceiling production further includes a hemming process in which the frame of the hemming area is heated, and the covering is effected by pressing and cooling the fabric after it is folded.
9. The method for producing an automotive interior ceiling as claimed in claim 8, characterized in that in the hemming process, the frame in the hemming area is heated by non-contact radiation heating so that the temperature of the hemming area exceeds the softening point of the hot melt adhesive film by more than 50 ℃.
10. The method for producing an automotive interior ceiling as claimed in claim 9, characterized in that the heat source for radiation heating is a conformal metal block which is heated by an electric heating element or a hot fluid, the temperature of the metal block is set at 160-220 ℃, and the distance from the surface of the metal block to the surface of the framework in the border area is 10-30 mm.
CN202111046266.6A 2021-09-08 2021-09-08 Automobile interior ceiling and production method thereof Pending CN113787777A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104260529A (en) * 2014-09-25 2015-01-07 沈阳际华三五四七特种装具有限公司 Sponge ball and fabrication method thereof
CN205143535U (en) * 2015-11-16 2016-04-13 江苏国泰宝马制衣有限公司 Clothing of seamless concatenation
CN106079466A (en) * 2016-07-04 2016-11-09 无锡吉兴汽车部件有限公司 The production technology of vehicular coat and hat rack
CN208274109U (en) * 2018-05-10 2018-12-25 中山市名人世家服饰有限公司 A kind of seamless trace trousers
CN109228564A (en) * 2018-08-07 2019-01-18 福州联泓交通器材有限公司 A kind of dormer window sunshading board composite material for automobile interiors and its manufacturing process
CN208429024U (en) * 2018-06-28 2019-01-25 江苏敏安电动汽车有限公司 Boot-lid panel and vehicle
CN210415729U (en) * 2019-07-30 2020-04-28 烟台正海合泰科技股份有限公司 Automotive interior ceiling
CN213013509U (en) * 2020-09-01 2021-04-20 天津市千丹地毯有限公司 Carpet production and processing is with device of borduring
CN112706419A (en) * 2020-12-31 2021-04-27 臻越自动化技术（上海）有限公司 Automobile armrest edge covering equipment

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104260529A (en) * 2014-09-25 2015-01-07 沈阳际华三五四七特种装具有限公司 Sponge ball and fabrication method thereof
CN205143535U (en) * 2015-11-16 2016-04-13 江苏国泰宝马制衣有限公司 Clothing of seamless concatenation
CN106079466A (en) * 2016-07-04 2016-11-09 无锡吉兴汽车部件有限公司 The production technology of vehicular coat and hat rack
CN208274109U (en) * 2018-05-10 2018-12-25 中山市名人世家服饰有限公司 A kind of seamless trace trousers
CN208429024U (en) * 2018-06-28 2019-01-25 江苏敏安电动汽车有限公司 Boot-lid panel and vehicle
CN109228564A (en) * 2018-08-07 2019-01-18 福州联泓交通器材有限公司 A kind of dormer window sunshading board composite material for automobile interiors and its manufacturing process
CN210415729U (en) * 2019-07-30 2020-04-28 烟台正海合泰科技股份有限公司 Automotive interior ceiling
CN213013509U (en) * 2020-09-01 2021-04-20 天津市千丹地毯有限公司 Carpet production and processing is with device of borduring
CN112706419A (en) * 2020-12-31 2021-04-27 臻越自动化技术（上海）有限公司 Automobile armrest edge covering equipment

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