# US 7,744,716 B2 · Method for making water-proof laminates from wood

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- Number: US 7,744,716 B2
- Document ID: US7744716B2
- Status: Granted
- Kind: B2
- Application number: 11/674,724
- Filed: 2007-02-14
- Published: 2008-08-14
- Granted: 2010-06-29
- Earliest claimed: 2007-02-14
- Inventors: Shu-Hui Chang
- Web page: https://patentgrep.com/patent/US7744716B2

## CPC

- B29C 45/14336: {Coating a portion of the article, e.g. the edge of the article (B29C45/14573 and B29C45/14598 take precedence)}
- B29C 45/14467: {Joining articles or parts of a single article (B29C45/14377, B29C45/14385, B29C45/14581, B29C45/14614 and B29C45/006 take precedence)}
- B29K 2711/14: Wood, e.g. woodboard or fibreboard
- B32B 37/12: characterised by using adhesives
- B32B 2317/16: Wood, e.g. woodboard, fibreboard, woodchips
- B32B 2323/10: Polypropylene
- B32B 2367/00: Polyesters, e.g. PET, i.e. polyethylene terephthalate
- 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 (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

A method for making a water-proof laminate from wood, includes a lower mold. A lower cover is provided in the lower mold. A wood plate is provided on the lower cover in the lower mold. An upper cover is provided on the wood plate. An upper mold is provided for pressing the lower cover, the wood plate and lower cover against the lower mold. A coating is injected into the upper and lower molds to cover at least the edges of the upper mold, wood plate and lower mold so that a water-proof laminate is finished after the curing of the coating. The upper mold is moved from the lower mold, and the water-proof laminate is moved from the lower mold.

## Claims

### Claim 1

A method for making a water-proof laminate from wood, the method comprising:
providing a lower mold;
providing a lower cover in the lower mold;
providing a wood plate on the lower cover in the lower mold;
providing an upper cover on the wood plate;
inserting rods through the lower mold for precisely positioning the upper cover, wood plate and lower cover;
providing an upper mold for pressing the upper cover, the wood plate and lower cover against the lower mold;
injecting a coating into the upper and lower molds to cover at least edges of the upper cover, wood plate and lower cover so that a water-proof laminate is finished after curing of the coating;
retreating the rods before injecting the coating into the upper and lower molds; and
moving the upper mold from the lower mold and moving the water-proof laminate from the lower mold.

### Claim 2 (depends on 1)

The method according to claim 1 further comprising providing adhesive between the wood plate and the lower cover before providing the wood plate on the lower cover.

### Claim 3 (depends on 1)

The method according to claim 1 further comprising providing adhesive between the upper cover and the wood plate before providing the upper cover on the wood plate.

### Claim 4 (depends on 1)

The method according to claim 1 wherein the upper cover comprises at least one layer.

### Claim 5 (depends on 1)

The method according to claim 1 wherein the wood plate comprises at least one layer.

### Claim 6 (depends on 1)

The method according to claim 1 wherein the lower cover comprises at least one layer.

### Claim 7 (depends on 1)

The method according to claim 1 wherein the upper cover has various thicknesses.

### Claim 8 (depends on 1)

The method according to claim 1 wherein the wood plate has various thicknesses.

### Claim 9 (depends on 1)

The method according to claim 1 wherein the lower cover has various thicknesses.

### Claim 10 (depends on 1)

The method according to claim 1 wherein the upper cover is made of a material selected from a group consisting of polypropylene and polyethylene terephthalate.

### Claim 11 (depends on 10)

The method according to claim 10 further comprising adding a fire-proof agent into the material of the upper cover so that the upper cover is fire-proof.

### Claim 12 (depends on 1)

The method according to claim 1 wherein the lower cover is made of material selected from a group consisting of polypropylene and polyethylene terephthalate.

### Claim 13 (depends on 12)

The method according to claim 12 further comprising adding a fire-proof agent into the material of the lower cover so that the lower cover is fire-proof.

### Claim 14 (depends on 1)

The method according to claim 1 wherein the wood plate is selected from a group consisting of a polymer plate, particle board, fiberboard, plywood, oriented strand board or medium density fiberboard.

### Claim 15 (depends on 1)

The method according to claim 1 wherein the coating is made of material selected from a group consisting of polypropylene, polyethylene terephthalate, polyethylene and acrylonitrile-butadiene-styrene.

### Claim 16 (depends on 1)

The method according to claim 1 wherein the coating further covers a portion of a top of the upper cover and a portion of a bottom of the lower cover.