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Production method of inner decorative ceiling of car

A production method and technology for automotive interiors, applied in the field of automotive interiors, can solve problems such as poor peeling force between substrates and surface finishes, application limitations, and high prices of substrates, and achieve light weight, low product cost, and excellent sound-absorbing performance Effect

Inactive Publication Date: 2011-04-20
YANTAI ZHENGHAI HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome above-mentioned deficiencies in the prior art, and provide a kind of production method of car interior ceiling, mainly solve existing use PP glass fiber composite board material as base material to produce the base material price of car interior ceiling is high, The application is greatly limited and the peeling force between the base material and the finish layer is poor, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] Preparation of CPP adhesive film:

[0014] 1. According to the pre-designed weight percentage, fully mix 70% HO-PP and 5% ethylene-octene copolymer in extruder A, and then put 25% CO-PP in extruder D and C In the process of exiting the machine, under the condition of process temperature 240-270 ℃, it is rolled by three-layer co-extrusion casting.

[0015] 2. According to the pre-designed weight percentage, fully mix 60% HO-PP and 5% ethylene-octene copolymer in extruder A, then put 35% CO-PP in extruder D and C In the process of exiting the machine, under the condition of process temperature 240-270 ℃, it is rolled by three-layer co-extrusion casting.

[0016] 3. According to the pre-designed weight percentage, fully mix 70% HO-PP and 3% ethylene-octene copolymer in extruder A, and then put 27% CO-PP in extruder D and C In the process of exiting the machine, under the condition of process temperature 240-270 ℃, it is rolled by three-layer co-extrusion casting.

[001...

Embodiment 1

[0018] Embodiment 1, the PP glass fiber composite plate and any one of the above-mentioned 4 kinds of CPP adhesive films are heated and compounded on the composite equipment to ensure that the CPP adhesive film is in a softened state with the PP glass fiber composite plate. One side of the PA film can be compounded together, and the CPP adhesive film cannot be melted; the process temperature of the CPP adhesive film is 130°C, and the process temperature of the PP glass fiber composite sheet below is slightly higher than 170°C, so that the PP glass fiber The PA film on the composite board and the CPP tackifying film are bonded together. The production speed is 4-6 m / min. The belt speed needs to be combined with the length of the drying tunnel to be used as a specific parameter. After the two are combined, they are used as the base material; The surface layer is hung on the mold, and at the same time, put the composite base material into the oven to heat, the oven temperature: 22...

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PUM

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Abstract

The invention discloses a production method of an inner decorative ceiling of a car, which is characterized by comprising the following steps: a. compounding a CPP adhesive film at one side of a PP glass fiber compound board, which is provided with a PA film, wherein the temperature of the CPP binding film is 130 DEG C and the temperature of the lower PP glass fiber compound board is 170 DEG C during compounding, and a compounded film is used as a base material; b. heating and softening the base material, and after the base material is swelled, compounding the swelled base material with a surface decorative layer through mould pressing; c. removing slitter edges in a water cutting way and a thermal cutting way or other cutting ways; and d. adhering accessories and trimming edges and then obtaining a ceiling finished product. The ceiling finished product has the advantages of low cost, good outer rigidity without deforming, excellent sound absorption property, odorlessness, stable property, safety, environmental protection, light weight, and the like and has the most important effect of solving the problem of the small stripping force between the PP glass fiber compound board and the surface decorative layer.

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] PP fiberglass composite sheet is a composite material that can be recycled. The basic structure includes: non-woven fabric on the bottom layer, PP fiberglass layer in the middle, and PA layer on the top layer; currently, some models use PP fiberglass composite sheet as the base material for production. Car interior roof. [0003] There are two main production processes for PP fiberglass composite sheets currently on the market: wet process and acupuncture process. The board produced by the wet process has a good expansion rate after heating, but it is completely dependent on imports, the price is high, the procurement cycle is long, and the application is greatly restricted; the board pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R13/02B32B37/06B32B37/10B32B38/04
Inventor 吕文君朱维珍刘美霞姜炳松孙勇
Owner YANTAI ZHENGHAI HIGH TECH