# US 9,434,147 B2 · Environmental engineered wood laminate flooring manufacturing method

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- Number: US 9,434,147 B2
- Document ID: US9434147B2
- Status: Granted
- Kind: B2
- Application number: 13/634,400
- Filed: 2011-07-01
- Published: 2013-04-18
- Granted: 2016-09-06
- Earliest claimed: 2010-07-01
- Assignees: Zhejiang Lingge Wood Co., Ltd.
- Applicants: Binbin Liu
- Inventors: Binbin Liu
- Web page: https://patentgrep.com/patent/US9434147B2

## CPC

- B32B 37/16: with all layers existing as coherent layers before laminating
- B29D 99/0014: {provided with ridges or ribs, e.g. joined ribs}
- E04F 15/042: {the lower layer being of fibrous or chipped material, e.g. bonded with synthetic resins}
- E04F 15/102: {of fibrous or chipped materials, e.g. bonded with synthetic resins}
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B)

## Abstract

An environmental engineered wood laminate flooring manufacturing method comprising the following: using a wood veneer layer as the top layer, adhering on the wood veneer layer a wear layer, and pressing on the bottom surface of the wood veneer layer a layer of glue-soaked paper, so as to accentuate the clear and natural wood lines on the wood veneer layer; using a high density board as a base board layer, and adhering on the bottom surface thereof a balancing layer; stacking the wood veneer layer, the wear layer, the glue-soaked paper, the base board layer, and the balancing layer; heat pressing with a heat press at a temperature between 170 and 190° C., at a pressure between 16 and 22 Mpa, and for 20 to 50 s. Corresponding tongues and grooves are provided on the four lateral faces of the manufactured flooring.

## Claims

### Claim 1

A method for forming a novel environmental wood laminate flooring, comprising:
step (1): dip-dyeing a layer of glue-soaked paper with different shades of colors;
step (2): providing a translucent wood veneer layer as a top layer having a top surface and a bottom surface, the top surface of which is adhered with a wear-resistant layer, the bottom surface of which is pressed with the layer of glue-soaked paper to accentuate clear and natural wood lines of the wood veneer layer, wherein the wear-resistant layer, the wood veneer layer and the glue-soaked paper are stacked successively from top to bottom;
step (3): providing a high density board as a base board layer having a top surface and a bottom surface, wherein the high density board has a thickness ranging from 6 mm to 20 mm, and the bottom surface of which is adhered with a balance layer, wherein the high density board and the balance layer are stacked successively from top to bottom;
step (4): stacking a stack formed in step (2) and a stack formed in step (3) together, wherein the layer of glue soaked paper and high density board are adjacent each other, and heat pressing the stacks with a heat pressing machine at a temperature ranging from about 170° C. to about 190° C. and under a pressure ranging from about 16 MPa to about 22 MPa, wherein the pressure is kept for a period from 20 s to 50 s, so that a flooring is preliminarily formed; and
step (5): configuring corresponding tongues and grooves on four lateral faces of the flooring formed in step (4), so that a plurality of the floorings may be attached together with the corresponding tongues and grooves.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the heat pressing in step (4) is performed at a temperature of 175° C. under a pressure of 20 MPa, and the pressure is kept for a period of 30 seconds.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the wood veneer layer has a thickness ranging from 0.05 mm to 0.3 mm.