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PVC co-extrusion foaming floor and preparation method thereof

A technology for flooring and foaming layers, applied in elastic flooring, chemical instruments and methods, lamination, etc., can solve the problems of inconspicuous wood grain, shallow wood grain, and difficulty in meeting appearance requirements, and achieve interlayer structure. Reasonable design, high integrity, improved compressive strength and flexural modulus

Active Publication Date: 2021-03-05
ANHUI SENTAI WPC TECH FLOOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the plastic surface layer is engraved by rolling, during the cooling process, due to the physical and chemical properties of the material, the grooves after engraving will slowly rebound, which will make the wood grain shallower, and eventually lead to the defect that the wood grain is not obvious. Meet the appearance requirements

Method used

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  • PVC co-extrusion foaming floor and preparation method thereof
  • PVC co-extrusion foaming floor and preparation method thereof
  • PVC co-extrusion foaming floor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Such as Figure 1-2 As shown, a PVC co-extrusion foam floor includes a PVC foam core 2 and a plastic surface layer 1 . The PVC foam core 2 includes a first foam layer 21, a second foam layer 22 and a skin layer 23, the second foam layer 22 covers the first foam layer 21, and the skin layer 23 covers The second foam layer 22 and the layers of the PVC foam core 2 are integrally connected.

[0079] In this embodiment, the material of the plastic surface layer is ASA. The ASA plastic surface layer 1 is wrapped around the crust layer 23 . The first foam layer 21 is a low-density foam layer. According to the analysis of cell size and density, the density is estimated to be 0.5g / cm 3 Left and right; the second foam layer 22 is a high-density foam layer. According to the analysis of cell size and density, the density is estimated to be 0.7g / cm 3 about. The plastic surface layer 1 has wood texture; the thickness of the crust layer 23 is 0.6cm.

[0080] Such as Figure 3~4...

Embodiment 2

[0089] The PVC co-extrusion foam floor of this embodiment differs from the first embodiment only in that there is a connection structure between the PVC foam core 2 and the plastic surface layer 1 . Such as Figure 5 As shown, the connection structure includes multiple rows of coupling grooves 23-1 arranged on the upper surface of the crust layer 23 and multiple rows of connection protrusions 1-1 arranged on the lower surface of the plastic surface layer 1. The coupling grooves 23 -1 is arranged in a direction parallel to the length direction of the floor, and the connecting protrusion 1-1 forms a corresponding matching structure with the combining groove 23-1 and is embedded in it.

[0090] Such as Figure 5 As shown, the combination groove 23-1 includes a notch part that is transitionally connected with the upper surface of the crust layer 23 and a groove body part that is transitionally connected with the notch part and arranged below it, and the groove body The portion h...

Embodiment 3

[0100] The PVC co-extrusion foam floor of this embodiment differs from the first embodiment only in that the plastic surface layer 1 has two surface layers.

[0101] That is, compared to the method in Example 1, it is necessary to add a co-extruded cladding board; the specific method is as follows.

[0102] Such as Figure 6-8 Shown, a kind of preparation method of PVC co-extrusion foam floor, comprises the following steps:

[0103] a. Add the raw materials and additives constituting the foam core into the main extruder, the raw materials and their additives are melted and plasticized in the main extruder, enter the main channel 100 of the mold, and then enter the foaming cavity of the mold Foaming is carried out in 200, then through the first cooling plate 300 of the mould, extruded from the outlet of the core extrusion plate 400 of the mould, to form the PVC foam core 2; 100A is basically arranged in the main flow channel 100, while the tail end of the choke core 100A exte...

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Abstract

The invention relates to a PVC co-extrusion foaming floor and a preparation method thereof, and belongs to the technical field of PVC foaming floors. The PVC co-extrusion foaming floor comprises a PVCfoaming core and a plastic surface layer, wherein the PVC foaming core comprises a first foaming layer, a second foaming layer and a skinning layer, the second foaming layer wraps the first foaming layer, the skinning layer wraps the second foaming layer, and all the layers of the PVC foaming core are integrally connected; the plastic surface layer wraps at least the upper surface of the skinninglayer; the first foaming layer is a low-density foaming layer, and the second foaming layer is a high-density foaming layer; and wood textures are formed in the plastic surface layer. According to the PVC co-extrusion foaming floor and the preparation method thereof, one-time forming is achieved through an improved foaming process, so that compared with a PVC foaming core in the prior art that the first foaming layer and the second foaming layer are not obviously distinguished and the skinning layer is thin, the PVC foaming core has the advantages of being clearer in structural hierarchy andhigher in overall strength; and the PVC foaming core is more suitable for wrapping the plastic surface layer.

Description

technical field [0001] The invention relates to a PVC co-extruded foam floor and a preparation method thereof, belonging to the technical field of PVC foam floors. Background technique [0002] PVC foam flooring is usually used as outdoor flooring. PVC foam board is usually produced by melting PVC and foaming agent and other mixed materials through an extruder to form a melt, which is extruded into a mold for high-temperature foaming, and then cooled and formed. When used as a floor, considering the surface strength and wear resistance, it is often necessary to extrude a layer of plastic on the surface of the foam board. And in order to make the floor have the texture of wood, the usual way is to emboss the wood grain by embossing rollers on this layer of plastic layer extruded. [0003] The utility model patent of CN202685311U discloses a foam board surface embossing machine as the authorized notification number. The equipment precisely adjusts the gap between the two em...

Claims

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Application Information

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IPC IPC(8): E04F15/02E04F15/18E04F15/22B29C44/20B29C48/00B29C48/07B29C48/154B29C48/21B29C59/04B29C69/02B32B27/30B32B27/08B32B27/06B32B3/06B32B3/30B32B38/00B32B38/06
CPCB29C44/20B29C59/046B29C69/02B32B3/06B32B3/30B32B5/18B32B5/32B32B27/065B32B27/30B32B38/0012B32B38/0036B32B38/06B32B2266/0235B32B2419/00B29C48/0012B29C48/07B29C48/154B29C48/21E04F15/02E04F15/02005E04F15/02044E04F15/18E04F15/22
Inventor 唐道远但堂勇
Owner ANHUI SENTAI WPC TECH FLOOR CO LTD
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