WO2022077552A1 - Garniture intérieure automobile thermoplastique, ainsi que moule de préparation et procédé de préparation de celle-ci - Google Patents

Garniture intérieure automobile thermoplastique, ainsi que moule de préparation et procédé de préparation de celle-ci Download PDF

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Publication number
WO2022077552A1
WO2022077552A1 PCT/CN2020/123830 CN2020123830W WO2022077552A1 WO 2022077552 A1 WO2022077552 A1 WO 2022077552A1 CN 2020123830 W CN2020123830 W CN 2020123830W WO 2022077552 A1 WO2022077552 A1 WO 2022077552A1
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Prior art keywords
interior trim
thermoplastic
preparation
mold
skin
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PCT/CN2020/123830
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English (en)
Chinese (zh)
Inventor
袁瑞建
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广东聚石化学股份有限公司
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Publication of WO2022077552A1 publication Critical patent/WO2022077552A1/fr

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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
    • 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
    • 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
    • B32B3/02—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 features of form at particular places, e.g. in edge regions
    • B32B3/08—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 features of form at particular places, e.g. in edge regions characterised by added members at particular parts
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    • 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
    • B32B3/10—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 discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—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 discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
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    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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    • B32B5/08—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 the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
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    • 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
    • B32B5/18—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 features of a layer of foamed material
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance 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
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    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • 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
    • 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
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • 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
    • B32B2266/025—Polyolefin
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • 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
    • B32B2307/70—Other properties
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    • B32B2605/08—Cars

Definitions

  • the invention belongs to the technical field of automobile interior trim parts manufacturing, and in particular relates to a thermoplastic automobile interior trim part, a preparation mold and a preparation method thereof.
  • Molding is the abbreviation of compression molding, also known as compression molding, which is a processing method in which plastic or rubber compounds are formed into products by heating and pressing in a closed mold cavity. Molding has many advantages, such as low processing cost, good product repeatability, easy to realize automatic production, and one-time molding of complex products. It has been widely used in the processing of cloakrooms, ceilings, pedals and other products.
  • the trunk covers of high-load-bearing vehicles are mainly made of PHC wet-laid honeycomb panels, which need to be sprayed and wrapped in the subsequent process.
  • the preparation process is complicated, the smell is large, the VOC is easy to exceed the standard, and there is a risk of leakage of glass fiber.
  • the leakage is easy to cause skin allergies, and the materials cannot be recycled and reused, and the folding function cannot be processed in one time.
  • Such as PP honeycomb panels, hexagonal honeycomb fiberglass panels, round-hole honeycomb fiberglass panels and other foamed core glass fiber reinforced composite panels the composite panels are softened and pressed into shape by baking. It is suitable for the preparation of products with complex vehicle body space and different thickness requirements.
  • the purpose of the present invention is to provide a thermoplastic automobile interior trim part, a preparation mold and a preparation method thereof.
  • the technical scheme adopted in the present invention is: a preparation mold for thermoplastic automobile interior trim parts, which comprises an upper template and a lower template, and the upper template and the lower template are opposed to form an inner mold cavity, so the inner mold cavity is formed.
  • the lower template is provided with a telescopic air needle and a vacuum suction hole communicating with the inner mold cavity, and the telescopic air needle can extend into the inner mold cavity.
  • the lower formwork comprises at least two sections, and the heights of adjacent sections are unequal.
  • the mold of the present invention can be used for one-time compression molding to prepare thermoplastic automotive interior parts with unequal thicknesses.
  • a bent connecting portion is provided between the adjacent segments.
  • folding lines can be reserved between parts of different thicknesses of the thermoplastic automobile interior trim part, so that the automobile interior trim part can realize the folding function.
  • each of the segments is provided with the telescopic air needle and the vacuum forming hole.
  • cooling water passages are provided inside the upper formwork and the lower formwork. Thereby, cooling water can be passed into the interior of the upper die plate and the lower die plate for cooling.
  • the present invention also provides a thermoplastic automobile interior trim part, which is prepared by using the preparation mold of the thermoplastic automobile interior trim part, the thermoplastic automobile interior trim part includes a core material and a skin wrapping the core material, the The epidermis consists of upper and lower epidermis.
  • a decorative fabric layer is further provided on the surface of the upper skin.
  • thermoplastic automobile interior trim component is a sandwich structure with unequal thickness
  • thermoplastic automobile interior trim component is provided with at least two core materials, and the thicknesses of adjacent core materials are unequal.
  • a metal support frame is provided between adjacent core materials.
  • Metal support frames increase the load-bearing capacity of automotive interior parts.
  • the core material is made of thermoplastic material, which may be selected from polyolefin materials.
  • the core material of the honeycomb structure is formed by plasticizing and extruding the polyolefin material or the core material of the corresponding structure is foamed.
  • the upper skin and the lower skin can be made of an extruded skin made of polyolefin, an extruded skin of fiber-reinforced polyolefin, or a pressed skin blended with polypropylene and glass fibers.
  • the thicknesses of the upper epidermis and the lower epidermis are respectively 1-5 mm.
  • thermoplastic automotive interior parts have a thickness of 5-30 mm.
  • the decorative fabric layer is made of non-woven fabrics, knitted fabrics, leather and other materials that can realize thermal compounding. As a result, there is no need for subsequent glue spray processing, and one-time compression molding is required.
  • thermoplastic automotive interior parts are trunk lids, spare tire lids, ceilings or footrests and the like.
  • the present invention also provides a method for preparing the thermoplastic automotive interior trim, which comprises molding using a preparation mold for the thermoplastic automotive interior, and the specific steps are as follows:
  • an infrared non-contact oven is used to bake and heat the upper skin and the lower skin, the heating temperature is 200-300° C., and the heating time is 30-60 s.
  • the vacuum pressure for evacuation is 0.1-0.5Mpa.
  • the step (3) further includes the following operation: placing a metal support frame between adjacent core materials.
  • the clamping pressure is 18-25MPa, and the pressure-holding time is 30-180s; the blowing pressure is 0.5-0.8Mpa, and the blowing time is 30-180s.
  • the present invention Compared with the prior art, the present invention has the following beneficial effects: the present invention can produce finished thermoplastic automobile interior parts by one-time compression molding, the preparation process is simple, the production efficiency is high, the preparation process is environmentally friendly, and no adhesive is required.
  • the core material of thermoplastic automotive interior parts is a foam core material or a thermoplastic honeycomb structure core material, which achieves a lightweight effect.
  • the internal structure of thermoplastic automotive interior parts can be freely designed, and products of equal thickness or unequal thickness can be produced according to needs, and can be molded in one step to realize the product folding function.
  • a metal support frame can be added to the interior of thermoplastic automotive interior parts to improve the load-bearing capacity of the product and replace the existing high-load-bearing PHC wet-laid paper honeycomb.
  • the thermoplastic automobile interior trim parts prepared by the invention can be recycled and reused, and are light in weight, good in sound insulation effect and large in bearing capacity.
  • Fig. 1 is the structural representation of thermoplastic automobile interior trim part according to the present invention
  • FIG. 2 is a schematic view of the state during molding of the thermoplastic automotive interior trim according to the present invention.
  • thermoplastic automobile interior trim part comprises a core material and a skin wrapping the core material, the skin is composed of an upper skin and a lower skin, and a decorative fabric layer is arranged on the surface of the upper skin.
  • the thermoplastic automobile interior trim part of this embodiment has a sandwich core structure of unequal thickness, and the thermoplastic automobile interior trim part is provided with at least two core materials of unequal thickness, and a metal support frame may be arranged between adjacent core materials.
  • the core material is made of thermoplastic material, and the thermoplastic material can be selected from polyolefin materials, such as a core material of a honeycomb structure formed by plasticizing and extruding a polyolefin material or a core material of a corresponding structure formed by foaming.
  • the quality of the core material of the structure Lightweight, which can reduce the weight of automotive interior parts.
  • the upper and lower skins can be made of polyolefin extruded skins, fiber-reinforced polyolefin extruded skins, or polypropylene and glass fiber blended pressed skins; the thicknesses of the upper and lower skins are 1 to 5 mm respectively. ; The total thickness of thermoplastic automotive interior parts is 5 to 30 mm.
  • the decorative fabric layer is made of non-woven fabrics, knitted fabrics, leather and other materials that can realize thermal compounding; thus, there is no need for subsequent glue spray processing, and one-time molding is required.
  • the thermoplastic automobile interior parts of this embodiment are trunk lids, spare tire lids, ceilings or footboards, and the like.
  • a mold for preparing thermoplastic automotive interior parts includes an upper mold plate 1 and a lower mold plate 2, and the upper mold plate 1 and the lower mold plate 2 are opposed to form an inner mold cavity.
  • the lower formwork is provided with at least two sections, the heights of adjacent sections are unequal, and a bent connecting portion 3 is arranged between the adjacent sections.
  • each section is provided with a telescopic air needle 22 and a vacuum suction hole 21, the vacuum suction hole 21 communicates with the inner mold cavity, and the telescopic air needle 22 can extend into the inner mold cavity.
  • Cooling water passages are arranged inside the upper die plate 1 and the lower die plate 2, so that cooling water can be passed into the upper die plate 1 and the lower die plate 2 for cooling.
  • a method for preparing a thermoplastic automobile spare tire cover plate of unequal thickness includes using the preparation mold of Example 2 to perform compression molding, as shown in Figures 1-2.
  • the core material of the spare tire cover is 20 times the PP foam core, the thickness of the front core material d is 12mm, the thickness of the rear core material e is 20mm, and there is an H between the front end core material d and the rear core material e.
  • type aluminum alloy support frame f; upper skin b and lower skin c are PP-TD20 material, 1.2mm thick; decorative fabric layer a covering the surface of upper skin b is 200g/m 2 PET non-woven fabric.
  • the steps of the preparation method are as follows:

Abstract

L'invention concerne une garniture intérieure automobile thermoplastique, ainsi qu'un moule de préparation et un procédé de préparation de celle-ci. Le moule de préparation comprend une plaque de moule supérieure et une plaque de moule inférieure. La plaque de moule supérieure et la plaque de moule inférieure sont disposées de façon opposée pour former une cavité de moule interne. La plaque de moule inférieure est pourvue de broches à gaz télescopiques et de trous d'absorption de plastique sous vide en communication avec la cavité de moule interne. Les broches à gaz télescopiques peuvent s'étendre dans la cavité de moule interne. Selon la présente invention, un produit fini de garniture intérieure automobile thermoplastique peut être préparé en une seule étape au moyen d'un moulage par compression, les procédures de préparation sont simples, le rendement de production est élevé, le procédé de préparation est respectueux de l'environnement et il n'est pas nécessaire d'utiliser un adhésif. Le matériau de noyau de la garniture intérieure automobile thermoplastique est un matériau de noyau expansé ou un matériau de noyau à structure en nid d'abeilles thermoplastique, ce qui permet d'obtenir l'effet de légèreté. La structure interne de la garniture intérieure automobile thermoplastique peut être conçue librement, des produits d'épaisseur égale ou des produits d'épaisseur inégale peuvent être produits selon les exigences, et une fonction de pliage de produit peut être obtenue par pressage de moule en une étape. La garniture intérieure automobile thermoplastique peut être recyclée et réutilisée, elle est légère en termes de poids, et présente un bon effet d'isolation sonore et une grande capacité de soutien.
PCT/CN2020/123830 2020-10-16 2020-10-27 Garniture intérieure automobile thermoplastique, ainsi que moule de préparation et procédé de préparation de celle-ci WO2022077552A1 (fr)

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Application Number Priority Date Filing Date Title
CN202011107584.4A CN112297545B (zh) 2020-10-16 2020-10-16 一种热塑性汽车内饰件及其制备模具和制备方法
CN202011107584.4 2020-10-16

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WO2022077552A1 true WO2022077552A1 (fr) 2022-04-21

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