CN-121973532-A - Method for synchronously hot-pressing PET film and impregnated bond paper into composite plate

Abstract

The invention provides a method for synchronously hot-pressing and compounding a PET film and impregnated bond paper on a plate, which is characterized in that melamine impregnated bond paper and the PET film with an adhesive coating are synchronously solidified on a base plate, special laminating equipment and independent gluing procedures are not needed, the existing melamine plate hot-pressing equipment can be directly utilized to realize one-step molding, the process flow is simple, the operation is convenient, and the method is suitable for industrial mass production.

Inventors

• ZHU XIANQING

Assignees

• 上海桂通化工科技有限公司

Dates

Publication Date

20260505

Application Date

20260303

Claims (9)

1. 1. The method for synchronously hot-pressing and compounding the PET film and the impregnated bond paper on the plate is characterized by comprising the following steps of: S1, preprocessing a base material, namely selecting a wood-based board as the base material, and sanding or cleaning the surface of the base material; S2, stacking and combining a PET film and melamine impregnated bond paper, covering the stacked PET film and melamine impregnated bond paper on the surface of the base material, spreading the melamine impregnated bond paper on the surface of the base material, and enabling the side of the PET film with the adhesive coating to face the melamine impregnated bond paper; and S3, sending the stacked assembly into a hot press to synchronously cure the resin of the melamine impregnated bond paper and the bonding coating of the PET film, so as to realize the integrated combination of the three.
2. 2. The method for synchronously hot-pressing and compounding the PET film and the impregnated bond paper on the plate according to claim 1, wherein in the step S3, when the stacked assembly is sent into a hot press, the hot-pressing temperature is controlled to be 150-220 ℃, the hot-pressing pressure is controlled to be 2.5-4MPa, and the hot-pressing time is controlled to be 20-80 seconds.
3. 3. The method for synchronously hot-pressing and compounding the PET film and the impregnated bond paper on the plate is characterized in that one side of the PET film is provided with an adhesive coating, and the adhesive coating comprises, by mass, 50-70% of melamine-urea formaldehyde resin, 5-10% of polyethylene glycol modifier, 2-5% of latent curing agent, 3-8% of nano silicon dioxide dispersion liquid and the balance of deionized water.
4. 4. The method for synchronously hot-pressing and compounding the PET film and the impregnated bond paper on the plate according to claim 3, wherein the latent curing agent is an imidazole curing agent or a dicyandiamide curing agent.
5. 5. The method for synchronously hot-pressing and compounding the PET film and the impregnated bond paper on the plate according to claim 1, wherein the thickness of the PET film is 0.01-0.3mm.
6. 6. The method for synchronously hot-pressing and compounding the PET film and the impregnated bond paper on the plate according to claim 2, wherein the hot-pressing process adopts a sectional temperature control mode, wherein the first temperature is 150-190 ℃ for 10-15 seconds, and the second temperature is 190-220 ℃ for 20-45 seconds.
7. 7. The method for synchronously hot-pressing and compounding the PET film and the impregnated bond paper on the plate according to claim 1, wherein in the step S2, before stacking the PET film and the melamine impregnated bond paper, electrostatic dust removal treatment is carried out on the surface of the melamine impregnated bond paper.
8. 8. The method of simultaneous hot pressing of PET film and impregnated bond paper onto a sheet material according to claim 3, wherein the coating amount of the adhesive coating is 15-25g/m 2 .
9. 9. The method for synchronously hot-pressing and compounding the PET film and the impregnated bond paper on the plate according to claim 1, wherein in the step S3, after the hot pressing is finished, the composite plate is naturally cooled to room temperature, and the surface of the plate is kept free from pressure contact in the cooling process, and the cooling time is more than or equal to 30 minutes.

Description

Method for synchronously hot-pressing PET film and impregnated bond paper into composite plate Technical Field The invention relates to the technical field of household decoration board processing, in particular to a method for synchronously hot-pressing and compounding PET (polyethylene terephthalate) film and impregnated bond paper on a board. Background With the continuous improvement of the requirements of the home decoration industry on environmental protection and aesthetic property, the PET series films (such as PETG films and BOBET films) and the high-gloss plates have the characteristics of high transparency, high strength and high gloss, are environment-friendly and odorless, cannot volatilize harmful gases such as benzene, formaldehyde and dioxin, and gradually become the preferable materials for the surface treatment of the decorative plates. At present, the traditional process of attaching the PET highlight film to the surface of the melamine plate mainly comprises two steps, namely attaching by adopting UV glue and attaching by adopting hot glue PUR glue. The two processes are carried out on the surface of the plate separately before lamination, so that the production process is increased, the process flow is complicated, special PET film lamination equipment is needed, the equipment investment cost is increased, extra factory space is occupied, the problem that the UV glue is not yellowing-resistant is solved, the yellowing phenomenon is easy to occur on the surface of the plate after long-term use, the decoration effect is affected, the PUR glue is subjected to health maintenance treatment after lamination, quick shipment cannot be realized, the production efficiency is reduced, in addition, the glue raw material cost and the manual operation cost are needed to be input in the independent gluing process, and the production comprehensive cost is further increased. The invention provides a PET film compounding method which can be synchronously carried out with the melamine paper pasting process of a melamine board without independent gluing or special equipment, realizes one-step molding and effectively makes up the defects of the prior art, and solves the problems of complicated process flow, large equipment investment, high cost, slow shipment, poor yellowing resistance and the like in the prior art. Disclosure of Invention The invention aims to provide a method for synchronously hot-pressing and compounding a PET film and impregnated bond paper on a plate, which ensures that the PET film and the melamine impregnated bond paper are synchronously hot-pressed and compounded on the plate. In order to achieve the above purpose, the invention provides a method for synchronously hot-pressing PET film and impregnated bond paper to be composited on a plate, which comprises the following steps: S1, preprocessing a base material, namely selecting a wood-based board as the base material, and sanding or cleaning the surface of the base material; S2, stacking and combining a PET film and melamine impregnated bond paper, covering the stacked PET film and melamine impregnated bond paper on the surface of the base material, spreading the melamine impregnated bond paper on the surface of the base material, and enabling the side of the PET film with the adhesive coating to face the melamine impregnated bond paper; and S3, sending the stacked assembly into a hot press to synchronously cure the resin of the melamine impregnated bond paper and the bonding coating of the PET film, so as to realize the integrated combination of the three. Further, in step S3, when the stacked assembly is sent into a hot press, the hot press temperature is controlled to be 150-220 ℃, the hot press pressure is controlled to be 2.5-4MPa, and the hot press time is controlled to be 20-80 seconds. Further, one side of the PET film is provided with an adhesive coating, and the adhesive coating comprises, by mass, 50-70% of melamine-urea formaldehyde resin, 5-10% of polyethylene glycol modifier, 2-5% of latent curing agent, 3-8% of nano silicon dioxide dispersion liquid and the balance of deionized water. Further, the latent curing agent is an imidazole curing agent or a dicyandiamide curing agent. The imidazole curing agent can be one of 2-methylimidazole, 2-ethyl-4-methylimidazole, 1-cyanoethyl-2-methylimidazole or 2-phenylimidazole, and the dicyandiamide curing agent can be one of pure dicyandiamide, formaldehyde modified dicyandiamide, epoxy modified dicyandiamide or urea formaldehyde modified dicyandiamide. Further, the thickness of the PET film is 0.01-0.3mm. Further, the hot pressing process adopts a sectional temperature control mode, wherein the temperature of the first section is 150-190 ℃ for 10-15 seconds, and the temperature of the second section is 190-220 ℃ for 20-45 seconds. Further, in step S2, before stacking the PET film and the melamine impregnated bond paper, electrostatic dust removal is performed on the surface of t