WO2021077680A1 - 一种用于制造具有木材纹理的发泡地板的模具 - Google Patents

一种用于制造具有木材纹理的发泡地板的模具 Download PDF

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Publication number
WO2021077680A1
WO2021077680A1 PCT/CN2020/082439 CN2020082439W WO2021077680A1 WO 2021077680 A1 WO2021077680 A1 WO 2021077680A1 CN 2020082439 W CN2020082439 W CN 2020082439W WO 2021077680 A1 WO2021077680 A1 WO 2021077680A1
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Prior art keywords
surface layer
mold
flow channel
module
wood texture
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PCT/CN2020/082439
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English (en)
French (fr)
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唐道远
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安徽森泰木塑科技地板有限公司
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Publication of WO2021077680A1 publication Critical patent/WO2021077680A1/zh

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    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers

Definitions

  • the invention relates to a mold, in particular to a mold for manufacturing foamed flooring with wood texture.
  • Traditional imitation wood floors are generally composite floors. It is composed of MDF substrate, wood grain decorative paper, wear-resistant layer and balance layer at the bottom.
  • MDF substrate is prone to mold and rot, and there is a fire hazard, the field urgently needs a floor with mildew-proof and flame-retardant functions.
  • PVC foam floor has become a choice.
  • the shape and appearance of the PVC foam floor do not meet the traditional requirements of people's use, resulting in its low added value and difficult to use in a large area of the market.
  • a Chinese invention patent application with publication number CN102294812A discloses a polystyrene wood-like profile. It puts the surface layer material and the core layer material into the auxiliary extruder and the main extruder respectively, and co-extrudes them into a mold, so that the surface layer material is coated on the core layer material.
  • the surface layer material is high-impact polystyrene and contains rhyolite masterbatch with good compatibility with high-impact polystyrene but different fluidity and dispersibility.
  • the core material is polystyrene micro-foamed board. The surface of the co-extruded profile is embossed to produce a three-dimensional effect or other effects.
  • This method uses color masterbatches of different substrate colors to make base color masterbatches and flow pattern masterbatches respectively.
  • the base color masterbatches have good fluidity and are dispersed in the base styrene material to form a background color during processing;
  • Grain color masterbatch has a low melt index and poor dispersibility. It cannot be uniformly dispersed during processing.
  • wood grain or other patterns are formed.
  • the imitation wood texture of the above co-extruded floor is not highly simulated, and the base color and flow pattern are prone to problems of mutual fusion and cross-color in the adjacent places, so that the quality of the imitation wood grain is extremely low.
  • the present invention aims to solve the above-mentioned problems, thereby providing a mold for manufacturing foamed flooring with wood texture.
  • the floor made by the mold can be co-extruded with two surface layers on the surface of the core layer, and after post-processing, the co-extruded floor can have a realistic effect of wood texture.
  • a mold for manufacturing foamed flooring with wood texture which is composed of a number of modules.
  • the modules include a main flow channel module, a second surface layer module and a first surface layer module; the main flow channel module is composed of a plurality of flow channels
  • the composition of the board is used to form the foamed core layer of the foamed floor with wood texture;
  • the second surface module is composed of at least one flow channel plate, which has a main flow channel and a second surface flow channel;
  • the first surface layer The module is composed of at least one flow channel plate, which has a main flow channel and a first surface layer flow channel.
  • the second surface layer flow channel and the main flow channel are connected through a straight mouth, and the first surface layer flow channel and the main flow channel are connected through a straight mouth.
  • a second surface casting cavity is formed between the second surface flow channel and the main flow channel, and the thickness of the second surface casting cavity is that of the second surface layer of the foamed floor with wood texture. thickness.
  • a first surface casting cavity is formed between the first surface flow channel and the main flow channel, and the thickness of the first surface casting cavity is the same as that of the first surface layer of the foamed floor with wood texture. thickness.
  • baffles are provided on both sides of the second surface layer casting cavity.
  • baffles are provided on both sides of the first surface layer casting cavity.
  • the material inlet of the first surface layer module is arranged on the upper part of the mold, and the material inlet of the second surface layer module is arranged on the side of the mold.
  • the second surface layer module is composed of two flow channel plates, one is the second surface layer forming plate, and the other is the second surface layer feeding plate; the material inlet of the second surface layer module is set in the second On the surface layer feeding plate, the material outlet of the second surface layer feeding plate is connected with the material inlet of the second surface layer forming plate; the second surface layer casting cavity is arranged on the second surface layer forming plate.
  • the first surface layer module is composed of a flow channel plate, and the material inlet and the mold outlet of the first surface layer module are both arranged on the flow channel plate.
  • the distance between the discharge port of the first surface layer casting cavity and the discharge port of the second surface layer casting cavity in the direction of the die plate is not less than 0.1 mm.
  • two surface layers can be co-extruded on the surface of the core board, which is suitable for manufacturing the mold for the foamed floor with wood texture;
  • the discharge ports of the two casting cavities of the present invention have a certain distance in the direction of the die plate, which ensures that the first surface layer and the second surface layer can be layered on the core layer board, with no cross-color
  • the first surface layer flow channel and the second surface layer flow channel of the present invention are arranged in a half-coated manner, so that the first surface layer and the second surface layer are half-coated on the core plate after molding, and then subjected to subsequent processing to form a whole
  • the surface layer of the floor in this way, the surface and bottom layers of the floor can be made of different materials, which can better reflect the performance of the overall floor.
  • Figure 1 is a schematic diagram of the structure of the mold of the present invention.
  • Figure 2 is a front view of the A plate in Figure 1;
  • Figure 3 is a front view of plate B in Figure 1;
  • Figure 4 is a front view of the C board in Figure 1;
  • a mold for manufacturing foamed flooring with wood texture includes a main runner module 3, a second surface layer module 2 and a first surface layer module 1, consisting of a total of eight runner plates A-H.
  • the D-H board is provided with the main runner 300 of the core layer of the mold, which is used for the molding of the core foam layer of the foam floor with wood texture.
  • the C board in addition to the main runner 300 of the mold core layer, the C board is also provided with a material inlet 201 of the second surface layer module and a material outlet 202 of the second surface layer material inlet plate.
  • the two openings are connected by a flow channel.
  • the B plate in addition to the main runner 300 of the core layer of the mold, the B plate is also provided with the material inlet 203 of the second surface forming plate and the second surface runner 200, the second surface runner 200 and the main runner A second surface casting cavity 20 is formed between 300. Baffles 4 are also provided at both ends of the second surface casting cavity 20.
  • the second surface flow channel 200 is connected with the second surface casting cavity 20 through a slot; this arrangement enables the melt of the second surface layer to be coated on the core plate in a semi-coated manner to form the first intermediate .
  • the C board is the second surface layer forming board 21, and the B board is the second surface forming board 22; the material outlet 202 of the second surface layer forming board is connected to the material inlet 203 of the second surface forming board;
  • the second surface layer casting cavity 20 is arranged on the second surface layer forming plate 22, and the material inlet 201 of the second surface layer module is arranged on the side of the entire mold.
  • the A plate is also provided with the material inlet 101 of the first surface module and the first surface runner 100, the first surface runner 100 and the main runner 300 A first surface casting cavity 10 is formed therebetween.
  • Baffles 4 are also provided at both ends of the first surface casting cavity 10.
  • the first surface flow channel 100 is communicated with the first surface casting cavity 10 through a slot; this arrangement enables the melt of the first surface layer to be coated on the first intermediate body in a semi-coated manner to form a wood texture
  • the precursor structure of the foamed floor is also provided with the material inlet 101 of the first surface module and the first surface runner 100, the first surface runner 100 and the main runner 300 A first surface casting cavity 10 is formed therebetween.
  • Baffles 4 are also provided at both ends of the first surface casting cavity 10.
  • the first surface flow channel 100 is communicated with the first surface casting cavity 10 through a slot; this arrangement enables the melt of the first surface layer to be coated on the first intermediate body in a semi-coated manner to form a wood texture
  • the first surface layer module 1 is solely composed of a flow channel plate, that is, an A plate.
  • the material inlet 101 and the mold outlet 5 of the first surface layer module are both arranged on the A plate, while the material inlet 101 of the first surface layer module is arranged on the upper part of the mold.
  • the distance between the discharge port of the first surface layer casting cavity 10 and the discharge port of the second surface layer casting cavity 20 in the die ejection direction is not less than 0.1 mm.
  • the precursor structure of the foamed floor with wood texture is further processed to form a floor with wood texture.
  • the wood texture of the floor is realistic and can be adjusted to generate various wood textures.
  • the post-processing is based on two surface layers.
  • the Chinese invention patent application with publication number CN102294812A has only one surface layer, so it is relatively monotonous in terms of expression.
  • the floor based on two surface layers can be treated separately by treating the two surface layers, such as using different colors for the two surface layers, embossing the upper surface layer, and removing part of the surface layer after embossing, so that the floor surface has two levels of surface. , From the perspective of three-dimensional (embossed depth), color difference, light and shade, etc., so as to achieve a realistic effect of texture.

Abstract

本发明涉及一种用于制造具有木材纹理的发泡地板的模具。该模具由若干模块组成，模块包括主流道模块、第二表层模块和第一表层模块；主流道模块由多个流道板组成，用于仿木纹理的发泡共挤地板的芯层发泡层的成型；第二表层模块至少由一个流道板构成，具有主流道和第二表层流道；第一表层模块至少由一个流道板构成，具有主流道和第一表层流道。采用本发明的模具可以在芯板表面共挤上两个表层；第一表层流道和第二表层流道以半包覆的方式设置，使得第一表层和第二表层成型后半包覆在芯层板上，再经后续处理以形成整体地板的表层；这样地板的表层和底层可以采用不同的原料来制作，能更好得体现整体地板的性能。

Description

一种用于制造具有木材纹理的发泡地板的模具 技术领域
本发明涉及一种模具，尤其是一种用于制造具有木材纹理的发泡地板的模具。
背景技术
传统仿木地板一般都是复合地板。由密度板基材、木纹装饰纸、耐磨层以及底部的平衡层组成。但由于密度板基材易发霉腐烂，还有火灾隐患，本领域亟需一种具有防霉阻燃功能的地板。在这种情况下，PVC发泡地板成为了一种选择。但PVC发泡地板本身形状和外观不符合人们使用传统要求，导致其附加值低，难以大面积市场使用。
如公开号为CN102294812A的中国发明专利申请，公开了一种聚苯乙烯仿木型材。它是把表层材料和芯层材料分别投入到辅助挤出机和主要挤出机，共挤到一个模具，使表层材料包覆在芯层材料上。表层材料为高抗冲聚苯乙烯并含有和高抗冲聚苯乙烯相容性好但流动性和分散性不同的流纹色母，芯层材料为聚苯乙烯微发泡板。共挤出的型材表面进行产生立体效果或其他效果的压花处理。该法采用不同基材颜色的色母粒，分别做成基色色母粒和流纹色母粒，基色色母粒流动性较好，在加工过程中分散于基苯乙烯材料形成底色；流纹色母熔融指数较低，分散性较差，在加工过程中不能均匀分散，随着材料的挤出形成木纹或其他花纹。上述共挤地板的仿木纹理，仿真度不高，基色和流纹在相邻之处容易发生互融和串色的问题，从而使得仿木纹的档次感极低。
同样地，要制造出本发明的共挤地板，传统的共挤模具并不适用。如公开号为CN107718498的中国发明专利申请，公开了一种共挤模具。该模具适用于传统的共挤地板，而无法在芯层的表面共挤出两个表层。
发明概述
技术问题
问题的解决方案
技术解决方案
本发明要解决上述问题，从而提供了一种用于制造具有木材纹理的发泡地板的模具。采用该模具制出的地板，可以在芯层表面共挤上两个表层，再经过后期处理，可使得共挤地板具有木材纹理逼真的效果。
本发明解决上述问题的技术方案如下：
一种用于制造具有木材纹理的发泡地板的模具，由若干数量的模块组成，所述模块包括主流道模块、第二表层模块和第一表层模块；所述主流道模块由多个流道板组成，用于具有木材纹理的发泡地板的芯层发泡层的成型；所述第二表层模块至少由一个流道板构成，具有主流道和第二表层流道；所述第一表层模块至少由一个流道板构成，具有主流道和第一表层流道。
作为上述技术方案的优选，所述第二表层流道与主流道通过一字口相通，第一表层流道与主流道通过一字口相通。
作为上述技术方案的优选，所述第二表层流道与主流道之间形成一个第二表层流延腔，所述第二表层流延腔的厚度为具有木材纹理的发泡地板第二表层的厚度。
作为上述技术方案的优选，所述第一表层流道与主流道之间形成一个第一表层流延腔，所述第一表层流延腔的厚度为具有木材纹理的发泡地板第一表层的厚度。
作为上述技术方案的优选，第二表层流延腔两侧设置有挡流板。
作为上述技术方案的优选，第一表层流延腔两侧设置有挡流板。
作为上述技术方案的优选，第一表层模块的物料入料口设置在模具上部，第二表层模块的物料入料口设置在模具侧部。
作为上述技术方案的优选，第二表层模块由两个流道板组成，一个为第二表层形成板，另一个为第二表层入料板；第二表层模块的物料入料口设置在第二表层入料板上，第二表层入料板的物料出料口与第二表层形成板的物料入料口相接；所述第二表层流延腔设置在第二表层形成板上。
作为上述技术方案的优选，第一表层模块由一个流道板组成，第一表层模块的物料入料口和模具出口都设置在该流道板上。
作为上述技术方案的优选，第一表层流延腔的出料口和第二表层流延腔的出料 口在模具出板方向上的间距为不小于0.1mm。
发明的有益效果
有益效果
本发明具有以下有益效果：
1、采用本发明的模具可以在芯板表面共挤上两个表层，适用于制造具有木材纹理的发泡地板的模具；
2、本发明的两个流延腔的出料口在模具出板方向上有一定间距，保证了第一表层和第二表层能够被分层地包覆在芯层板上，具有不串色的优点；
3、本发明的第一表层流道和第二表层流道以半包覆的方式设置，使得第一表层和第二表层成型后半包覆在芯层板上，再经后续处理以形成整体地板的表层；这样地板的表层和底层可以采用不同的原料来制作，能更好得体现整体地板的性能。
对附图的简要说明
附图说明
图1是本发明模具的结构示意图；
图2是图1中A板的主视图；
图3是图1中B板的主视图；
图4是图1中C板的主视图；
图中，1-第一表层模块，2-第二表层模块，3-主流道模块；4-挡流板，5-模具出口；
10-第一表层流延腔，20-第二表层流延腔；
21-第二表层入料板，22-第二表层形成板；
100-第一表层流道，200-第二表层流道；
101-第一表层模块的物料入料口；
201-第二表层模块的物料入料口；
202-第二表层入料板的物料出料口；
203-第二表层形成板的物料入料口。
发明实施例
本发明的实施方式
以下结合附图对本发明进行进一步的说明。
本具体实施方式仅仅是对本发明的解释，并不是对本发明的限制，本领域技术人员在阅读了本发明的说明书之后，所做的任何改变，只要在权利要求书的范围内，都将受到专利法的保护。
如图1所示，一种用于制造具有木材纹理的发泡地板的模具，包括主流道模块3、第二表层模块2和第一表层模块1，共由A-H八块流道板组成。
其中，D-H板设有模具芯层的主流道300，用于具有木材纹理的发泡地板的芯层发泡层的成型。
同时参照图4，C板除了设有模具芯层的主流道300外，还设有第二表层模块的物料入料口201和第二表层入料板的物料出料口202。这两个口子之间通过流道连通。
同时参照图3，B板除了设有模具芯层的主流道300外，还设有第二表层形成板的物料入料口203和第二表层流道200，第二表层流道200和主流道300之间形成第二表层流延腔20。第二表层流延腔20两侧端部还设置有挡流板4。第二表层流道200与第二表层流延腔20通过一字口连通；如此设置，可使得第二表层的熔料以半包覆地形式包覆在芯层板上，形成第一中间体。
C板也就是第二表层入料板21，B板也就是第二表层形成板22；第二表层入料板的物料出料口202与第二表层形成板的物料入料口203相接；所述第二表层流延腔20设置在第二表层形成板22上，第二表层模块的物料入料口201设置在整个模具的侧部。
B板和C板共同构成了第二表层模块2。
同时参照图2，A板除了设有模具芯层的主流道300外，还设有第一表层模块的物料入料口101和第一表层流道100，第一表层流道100和主流道300之间形成第一表层流延腔10。第一表层流延腔10两侧端部还设置有挡流板4。第一表层流道100与第一表层流延腔10通过一字口连通；如此设置，可使得第一表层的熔料以半包覆地形式包覆在第一中间体上，形成具有木材纹理的发泡地板的前体结构 。
本实施例中，第一表层模块1单独地由一个流道板组成，也就是A板。第一表层模块的物料入料口101和模具出口5都设置在A板上，同时第一表层模块的物料入料口101设置在模具上部。
为了使第一表层和第二表层不串色，第一表层流延腔10的出料口和第二表层流延腔20的出料口在模具出板方向上的间距为不小于0.1mm。
具有木材纹理的发泡地板的前体结构进一步处理，可形成具有木材纹理的地板，该地板的木材纹理效果逼真，并且可以通过调节生成各种各样的木材纹理。
后期处理是基于两个表层实现的，公开号为CN102294812A的中国发明专利申请它只有一个表层，故在表现手法上比较单调。而基于两个表层的地板，可以通过对两个表层分别处理，如两个表层用不同的颜色、对上面的表层进行压纹、压纹后去除部分的表层使地板表面出现两种层次的表面，从立体(压纹深度)、色差、明暗等角度去表现，从而实现纹理逼真的效果。

Claims (10)

  1. 一种用于制造具有木材纹理的发泡地板的模具，由若干数量的模块组成，其特征在于：所述模块包括主流道模块(3)、第二表层模块(2)和第一表层模块(1)；所述主流道模块由多个流道板组成，用于具有木材纹理的发泡地板的芯层发泡层的成型；所述第二表层模块至少由一个流道板构成，具有主流道(300)和第二表层流道(200)；所述第一表层模块至少由一个流道板构成，具有主流道(300)和第一表层流道(100)。
  2. 根据权利要求1所述的一种用于制造具有木材纹理的发泡地板的模具，其特征在于：所述第二表层流道与主流道通过一字口相通，第一表层流道与主流道通过一字口相通。
  3. 根据权利要求1所述的一种用于制造具有木材纹理的发泡地板的模具，其特征在于：所述第二表层流道与主流道之间形成一个第二表层流延腔(20)，所述第二表层流延腔的厚度为具有木材纹理的发泡地板第二表层的厚度。
  4. 根据权利要求1所述的一种用于制造具有木材纹理的发泡地板的模具，其特征在于：所述第一表层流道与主流道之间形成一个第一表层流延腔(10)，所述第一表层流延腔的厚度为具有木材纹理的发泡地板第一表层的厚度。
  5. 根据权利要求1所述的一种用于制造具有木材纹理的发泡地板的模具，其特征在于：第二表层流延腔(20)两侧设置有挡流板(4)。
  6. 根据权利要求5所述的一种用于制造具有木材纹理的发泡地板的模具，其特征在于：第一表层流延腔(10)两侧设置有挡流板(4)。
  7. 根据权利要求6所述的一种用于制造具有木材纹理的发泡地板的模具，其特征在于：第一表层模块的物料入料口(101)设置在模具上部，第二表层模块的物料入料口(201)设置在模具侧部。
  8. 根据权利要求7所述的一种用于制造具有木材纹理的发泡地板的模具，其特征在于：第二表层模块由两个流道板组成，一个为第二表层形成板(22)，另一个为第二表层入料板(21)；第二表层模块的物料入料口(201)设置在第二表层入料板(21)上，第二表层入料板的物料出料口(202)与第二表层形成板的物料入料口(203)相接；所述第二表层流延腔(20)设置在第二表层形成板(22)上。
  9. 根据权利要求7所述的一种用于制造具有木材纹理的发泡地板的模具，其特征在于：第一表层模块由一个流道板组成，第一表层模块的物料入料口(101)和模具出口(5)都设置在该流道板上。
  10. 根据权利要求7所述的一种用于制造具有木材纹理的发泡地板的模具，其特征在于：第一表层流延腔(10)的出料口和第二表层流延腔(20)的出料口在模具出板方向上的间距为不小于0.1mm。
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