WO2006104301A1

WO2006104301A1 - Mulberry paper patterned laminates

Info

Publication number: WO2006104301A1
Application number: PCT/KR2005/002877
Authority: WO
Inventors: Kee Duk Sung
Original assignee: Melatone, Ltd.
Priority date: 2005-03-29
Filing date: 2005-08-31
Publication date: 2006-10-05

Abstract

Disclosed herein is a mulberry paper patterned laminate having improved decorative beauty. The mulberry paper patterned laminate comprises a kraft paper impregnated with a phenol resin, a base paper impregnated with a melamine resin and laminated on the kraft paper, a mulberry paper laminated on the base paper, and an overlay paper impregnated with the melamine resin and laminated on the mulberry paper.

Description

MULBERRY PAPER PATTERNED LAMINATES

Technical Field

[1] The present invention relates to laminates, and more particularly to mulberry paper patterned laminates having improved decorative beauty.

Background Art [2] In general, laminates are used as decorative materials attached to the surface of furniture or floorings to embellish the appearance. [3] Fig. 1 is a cross-sectional view of a conventional laminate.

[4] As shown in Fig. 1, the laminate comprises a kraft paper 2, a decor paper 3 and an overlay paper 4 laminated in this order from the bottom. Each of the kraft paper, the decor paper and the overlay paper is composed of a paper impregnated with a melamine resin or phenol resin. [5] In recent years, natural decorative materials have drawn a great deal of attention and interest. Under this circumstance, a wood pattern or a marble shape is printed on the decor paper 3 of the laminate. [6] However, the conventional laminate 1 has the limitation that an artificial shape is printed on the decor paper 3. Accordingly, conventional laminate has a problem in that superior decorative appearance cannot be provided.

Disclosure of Invention

Technical Problem [7] Therefore, the present invention has been made to solve the above problem, and it is an object of the present invention to provide laminates having improved decorative beauty.

Technical Solution [8] In accordance with one preferred embodiment of the present invention, the above object can be accomplished by the provision of a mulberry paper patterned laminate comprising a kraft paper impregnated with a phenol resin, a base paper impregnated with a melamine resin and laminated on the kraft paper, a mulberry paper laminated on the base paper, and an overlay paper impregnated with a melamine resin and laminated on the mulberry paper. [9] Preferably, the laminate further comprises pressed and dried leaves or wild grasses for decoration provided on the mulberry paper. The mulberry paper is composed of one or more processed mulberry sheets laminated to each other, and pressed and dried leaves or wild grasses for decoration may be further provided between the mulberry sheets during the lamination. [10] Preferably, the overlay paper is made of a substantially transparent material so as to display the shape of the mulberry paper to the outside. Preferably, the kraft paper, the base paper, the mulberry paper and the overlay paper are pressed under high pressure at high temperature to be fixed to one another.

[11] The mulberry paper may be impregnated with a melamine resin. At this time, it is preferred that pressed and dried leaves or wild grasses for decoration are provided on the mulberry paper, followed by impregnation with a melamine resin. The mulberry paper is composed of one or more processed mulberry sheets laminated to each other, and pressed and dried leaves or wild grasses for decoration may be further provided between the mulberry sheets during the lamination.

[12] In accordance with another preferred embodiment of the present invention, there is provided a mulberry paper patterned laminate comprising at least one kraft paper impregnated with a phenol resin, a base paper impregnated with a melamine resin and laminated on the kraft paper, and a mulberry paper impregnated with a melamine resin and laminated on the base paper.

[13] It is preferred that pressed and dried leaves or wild grasses for decoration be provided on the mulberry paper, followed by impregnation with a melamine resin. The mulberry paper is composed of one or more processed mulberry sheets laminated to each other, and pressed and dried leaves or wild grasses for decoration may be further provided between the mulberry sheets during the lamination. Preferably, the kraft paper, the base paper and the mulberry paper are pressed under high pressure at high temperature to be fixed to one another.

[14] In accordance with another preferred embodiment of the present invention, there is provided a mulberry paper patterned laminate comprising a kraft paper impregnated with a phenol resin, and a mulberry paper laminated on the kraft paper.

[15] It is preferred that an overlay paper impregnated with a melamine resin are laminated on the mulberry paper. Also, the mulberry paper may be impregnated with a melamine resin.

[16] Preferably, the laminate further comprises pressed and dried leaves or wild grasses provided for decoration on the mulberry paper. The mulberry paper is composed of one or more processed mulberry sheets laminated to each other, and pressed and dried leaves or wild grasses for decoration may be further provided between the mulberry sheets during the lamination. Preferably, the kraft paper and the mulberry paper are pressed under high pressure at high temperature to be fixed to each other. Advantageous Effects

[17] According to the present invention, laminates with remarkably improved decorative beauty can be provided. Brief Description of the Drawings

[18] The features and advantages of the present invention will be more clearly understood from the following embodiments with reference to the accompanying drawings, in which:

[19] Fig. 1 is a cross-sectional view of conventional laminate;

[20] Fig. 2 is a cross-sectional view of a mulberry paper patterned laminate according to one embodiment of the present invention;

[21] Fig. 3 is a flow chart illustrating the procedure used for producing a mulberry paper in the present invention;

[22] Fig. 4 is a cross-sectional view of a mulberry paper patterned laminate according to another embodiment of the present invention; and

[23] Fig. 5 is a cross-sectional view of a mulberry paper patterned laminate according to another embodiment of the present invention. Best Mode for Carrying Out the Invention

[24] Preferred embodiments of the present invention that can specifically achieve the above object will be described in detail.

[25] Hereinafter, mulberry paper patterned laminates according to preferred embodiments of the present invention will be explained with reference to the accompanying drawings. The same reference numerals indicate the same elements in the drawings, and further description thereof is omitted.

[26] Fig. 2 is a cross-sectional view of a mulberry paper patterned laminate according to one embodiment of the present invention. As shown in Fig. 2, the mulberry paper patterned laminate 10 comprises a kraft paper 11, a base paper 12, a mulberry paper 13 and an overlay paper 14 laminated in this order from the bottom.

[27] The kraft paper 11 is impregnated with a phenol resin. The phenol resin is prepared by condensation and polymerization of phenols and aldehydes. The phenol resin is hard and non-flammable, and has superior electrical and thermal insulation properties.

[28] The base paper 12 laminated on the kraft paper 11 is impregnated with a melamine resin. The melamine resin is a thermosetting resin prepared by condensation of melamine and formaldehyde. The melamine resin is easy to be colored as colorless and transparent, and has high heat resistant and high hardness.

[29] The mulberry paper 13 is laminated on the base paper 12.

[30] Fig. 3 is a flow chart illustrating the procedure used for a producing a mulberry paper by an automatic production process.

[31] Referring to Fig. 3, the method for automatically production of the mulberry paper

13 will be explained below. The mulberry paper used in the present invention is preferably made of a tree stem, such as mulberry stem etc. [32] First, mulberry stem removed twigs was steamed, and then bark thereof was peeled off (SlO). Peeled bark was dried, and then soaked in cold water to obtain spread bark (S20).

[33] Secondly, grass such as Uramine was added to the soaked bark (S30). At this step, banana skin or rice straw can be further added. Dried leaves or wild grasses etc was scattered or dropped on a moving wire during paper processing in an automatic production line (S40).

[34] Uramine may be included in the leaves or wild grasses as a species of grass called

Nori which grows naturally in Japan. That is, Uramine may be supplied separately or together with leaves or wild grasses. By combination of uramine and the leaves or wild grasses can improve the natural decorative beauty of the mulberry paper.

[35] Next, the mulberry paper was passed through rolls for squeezing water out and then dried in a dry steam line at about 80 C for 40-60 seconds (S50) to complete the production of the final mulberry paper.

[36] Obtained mulberry paper 13 showed natural beauty and thus can be used in decorative application.

[37] Furthermore, pressed and dried leaves or wild grasses for decoration can be further provided on the mulberry paper 13. The mulberry paper 13 is composed of one or more processed mulberry sheets laminated to each other, and pressed and dried leaves or wild grasses for decoration may be inserted between the mulberry sheets during the lamination.

[38] As a result of this course, natural decorative beauty of the laminate can be further improved.

[39] Referring back to Fig. 2, overlay paper 14 impregnated with melamine resin is preferably laminated on the mulberry paper 13. The overlay paper 14 is made of a substantially transparent material so as to display the pattern and shape of the mulberry paper to the outside.

[40] Also, the overlay paper 14 protects the mulberry paper 13 from being directly exposed to the outside, thereby effectively preventing damage to or deterioration of the mulberry paper 13.

[41] In a preferred modified embodiment, the mulberry paper 13 itself is impregnated with a melamine resin. Also, it is preferred that pressed and dried leaves or wild grasses for decoration are provided on the mulberry paper 13, followed by impregnation with a melamine resin.

[42] The mulberry paper 13 is composed of one or more processed mulberry sheets laminated to each other, and pressed and dried leaves or wild grasses for decoration may be further provided between the mulberry sheets during the lamination.

[43] In the above embodiment, the kraft paper 11, the base paper 12, the mulberry paper 13 and the overlay paper 14 can be sequentially layered, and then fixed to one another by high-pressure lamination (HPL) or low-pressure lamination(LPL).

[44] Of course, it is preferred that the kraft paper 11, the base paper 12, the mulberry paper 13 and the overlay paper 14 be pressed under high pressure at high temperature to be firmly fixed to one another. In this manner, a substantially integrated high- strength laminate can be provided.

[45] Fig. 4 is a cross-sectional view of a mulberry paper patterned laminate according to another embodiment of the present invention.

[46] As shown in Fig. 4, the laminate 10 according to this embodiment uses a mulberry paper 13 impregnated with melamine resin without any lamination of an overlay paper thereon. Since the melamine resin impregnated on the mulberry paper 13 have also functions of an overlay paper, the mulberry paper can be securely protected despite the absence of an overlay paper.

[47] Specifically, a melamine resin-impregnated base paper 12 is laminated on a phenol resin-impregnated kraft paper 11, and then a melamine resin-impregnated mulberry paper 13 is laminated on the base paper 12.

[48] The kraft paper 11, the base paper 12 and the mulberry paper 13 can be sequentially layered, and then fixed to one another by high-pressure lamination (HPL) or low- pressure lamination(LPL).

[49] Of course, it is preferred that the kraft paper 11, the base paper 12 and the mulberry paper 13 are pressed under high pressure at high temperature to be firmly fixed to one another. In this manner, a substantially integrated high-strength laminate can be provided.

[50] Further, it is more preferred that pressed and dried leaves or wild grasses for decoration are provided on the mulberry paper 13, followed by impregnation with a melamine resin.

[51] The mulberry paper 13 is composed of one or more processed mulberry sheets laminated to each other, and pressed and dried leaves or wild grasses for decoration may be further provided between the mulberry sheets during the lamination.

[52] Fig. 5 is a cross-sectional view of a mulberry paper patterned laminate according to another embodiment of the present invention.

[53] As shown in Fig. 5, the laminate 10 comprises a mulberry paper 13 provided on the kraft paper 11. The mulberry paper 13 itself have a function of a base paper. The mulberry paper 13 has a relatively high strength when compared to a base paper made of a general paper. Accordingly, the strength of the laminate 10 can be enhanced without any substantial change in the entire thickness of the laminate.

[54] It is preferred that an overlay paper 14 is laminated on the mulberry paper 13. Of course, the mulberry paper 13 itself may be impregnated with a melamine resin without separate overlay paper 14. [55] Since other constitutions of the laminate according to this embodiment are identical to those of the previous embodiments, detailed description thereof is omitted hereinafter. [56] As described above, the laminates of the present invention have remarkanly improved natural decorative beauty and high strength. [57] It should be understood that the embodiments and the accompanying drawings have been described for illustrative purposes, and those skilled in the art will appreciate that various modifications, additions and substitutions are allowed without departing from the scope and spirit of the invention. [58]

Industrial Applicability [59] As apparent from the description, mulberry paper patterned laminates provided by the present invention comprises a highly natural decorative mulberry paper, and thus can provide remarkably improved decorative appearance.

Claims

[1] A mulberry paper patterned laminate, comprising: a kraft paper impregnated with a phenol resin; a base paper impregnated with a melamine resin and laminated on the kraft paper; a mulberry paper laminated on the base paper; and an overlay paper impregnated with a melamine resin and laminated on the mulberry paper.

[2] The laminate as set forth in claim 1, further comprising pressed and dried leaves or wild grasses provided for decoration on the mulberry paper.

[3] The laminate as set forth in claim 1, wherein the mulberry paper is composed of one or more processed mulberry sheets laminated to each other, and pressed and dried leaves or wild grasses for decoration are further provided between the mulberry sheets during the lamination.

[4] The laminate as set forth in claim 1, wherein the overlay paper is made of a substantially transparent material so as to display the shape of the mulberry paper to the outside. [5] The laminate as set forth in claim 1, wherein the kraft paper, the base paper, the mulberry paper and the overlay paper are pressed under high pressure at high temperature to be fixed to one another. [6] The laminate as set forth in claim 1, wherein the mulberry paper is impregnated with the melamine resin. [7] The laminate as set forth in claim 6, wherein the mulberry paper is impregnated with the melamine resin after pressed and dried leaves or wild grasses for decoration are provided on the mulberry paper. [8] The laminate as set forth in claim 6, wherein the mulberry paper is composed of one or more processed mulberry sheets laminated to each other, and pressed and dried leaves or wild grasses for decoration are further provided between the mulberry sheets during the lamination. [9] A mulberry paper patterned laminate, comprising: a kraft paper impregnated with a phenol resin; a base paper impregnated with a melamine resin and laminated on the kraft paper; and a mulberry paper impregnated with a melamine resin and laminated on the base paper. [10] The laminate as set forth in claim 9, wherein the mulberry paper is impregnated with the melamine resin after pressed and dried leaves or wild grasses for decoration are provided on the mulberry paper. [11] The laminate as set forth in claim 9, wherein the mulberry paper is composed of one or more processed mulberry sheets laminated to each other, and pressed and dried leaves or wild grasses for decoration are further provided between the mulberry sheets during the lamination. [12] The laminate as set forth in claim 9, wherein the kraft paper, the base paper and the mulberry paper are pressed under high pressure at high temperature to be fixed to one another. [13] A mulberry paper patterned laminate, comprising: a kraft paper impregnated with a phenol resin; and a mulberry paper laminated on the kraft paper. [14] The laminate as set forth in claim 13, further comprising a melamine resin-

-impregnated overlay paper laminated on the mulberry paper. [15] The laminate as set forth in claim 13, wherein the mulberry paper is impregnated with the melamine resin. [16] The laminate as set forth in claim 13, further comprising pressed and dried leaves or wild grasses for decoration provided on the mulberry paper. [17] The laminate as set forth in claim 13, wherein the mulberry paper is composed of one or more processed mulberry sheets laminated to each other, and pressed and dried leaves or wild grasses for decoration are further provided between the mulberry sheets during the lamination. [18] The laminate as set forth in claim 13, wherein the kraft paper and the mulberry paper are pressed under high pressure at high temperature to be fixed to each other.