CN105415477B - A kind of environment protection type sheet material and its manufacture method for production of having furniture made to order - Google Patents

Abstract

The present invention relates to an environment-friendly board for customized furniture production and a manufacturing method thereof. Adhesive layer made of modified thermoplastic film material. The plasma-modified thermoplastic film material is used as an adhesive, and the method of layered paving is used to compound with modified wood shavings or wood fibers using a flat pressing process in series of hot pressing-cold pressing. Advantages: The environmentally friendly board has no formaldehyde release, excellent water resistance, improves the compatibility of thermoplastic film and wood fiber or wood shavings, and facilitates the wetting and penetration of the melted thermoplastic film material on the surface of wood fiber or wood shavings, and forms a mechanical The reliable bonding structure improves the mechanical properties of the board. There is no gluing process in the manufacturing process, the process is simple, and it can be widely used in the production of customized furniture.

Description

A kind of environment-friendly sheet material and manufacturing method thereof for customized furniture production

technical field

The invention relates to an environment-friendly plate used for custom-made furniture production and a manufacturing method thereof.

Background technique

Customized furniture can break the limitations of space, has a high degree of matching with the main body of space, can fully improve space utilization, save housing area, and can fully meet the individual pursuit of different consumers for furniture styles. It has become a very important feature in today's society. A popular way to organize your furniture.

At present, the substrates used in custom furniture production usually use solid wood particle board (particle board) and medium density fiberboard. These materials have the advantages of light weight, high strength ratio, good elasticity, impact resistance, rich and beautiful texture and tone, and easy processing. Most of the board and medium density fiberboard production process uses liquid aldehyde-containing synthetic resins, such as urea-formaldehyde resins, melamine resins, etc., as adhesives. Great harm. At the same time, there are still problems such as unsatisfactory waterproof performance and dimensional stability in the application of solid wood particle board and medium density fiberboard, which seriously limit the development of customized furniture.

Although veneering and finishing can effectively alleviate the above problems, drilling is a necessary process in the process of custom furniture processing, which will lead to weakened sealing effect and the inevitable release of free formaldehyde. In addition, during the use of furniture, the peeling off of the edge banding is also a common defect, which not only affects the appearance, but also greatly increases the release of free formaldehyde and the chance of water molecules entering. Therefore, the use of high-performance, green and environmentally friendly adhesives is a fundamental measure.

Using film-like thermoplastic resin instead of conventional wood adhesives to prepare wood-based panels has a simple production process, low equipment investment, and high production efficiency, which can solve the problem of free formaldehyde release from the root. For example, the Chinese invention patent with the publication number CN 102181239 A proposes a method for making plywood and syntropic laminates with formaldehyde-free film adhesives, and obtains high water resistance, elongation at break and notched impact strength. Plywood and laminated wood with other advantages. At the same time, the publication numbers are CN 104308915 A "A Production Process of Formaldehyde-free Plywood", CN 103144152 A "A Formaldehyde-free Plywood and Its Preparation Method", CN 104139445 A "Manufacturing Method of Formaldehyde-Free Glued Indoor Plywood or Floor Substrate" Chinese invention patents such as CN103934877A "a kind of zero-formaldehyde particleboard and its manufacturing method" have been explored in thermoplastic wood-based panels, but the above-mentioned methods have certain limitations in the selection of wood raw materials, such as film-like thermoplastic resins. It is only used for compounding with veneer wood raw materials. When gluing wood shavings or wood fibers, thermoplastic resins in the form of particles or powders are usually used, which not only increases the mixing process, but also tends to cause uneven mixing of raw materials and insufficient adhesion.

At the same time, non-polar thermoplastic films are thermodynamically incompatible with polar wood materials, which greatly restricts their application in more fields. Although pretreatment of wood raw materials by various methods can improve the performance of the board, it is difficult to achieve large-scale production due to problems such as complex process, high cost, high energy consumption, and chemical pollution.

Contents of the invention

The present invention proposes an environment-friendly board for customized furniture production and its manufacturing method. Its purpose is to overcome the above-mentioned defects in the prior art. It has no formaldehyde release, simple and easy-to-control manufacturing process, and good water resistance. , high strength and other characteristics.

The technical solution of the present invention: an environment-friendly board for customized furniture production, its structure is to include at least three layers of wood fibers or wood shavings, and the plasma-modified panels are arranged between the upper and lower surfaces of each layer of wood shavings or wood fibers. An adhesive layer of treated thermoplastic film material, one or both of said particleboard or fiberboard.

Its preparation method comprises the following steps:

1) Dry the wood fiber or wood shavings to a moisture content of 0-15%, and then determine the amount of each layer of wood shavings or wood fiber and the number of layers of thermoplastic film according to the thickness of the target board;

2) Cut the thermoplastic film to the same size as the target sheet and perform plasma treatment;

3) Evenly spread the dried wood fibers or wood shavings in step 1) on the plasma-treated thermoplastic film material, wherein the last layer of wood shavings or wood fibers is covered with a layer of plasma-treated thermoplastic film. film;

4) Put the material paved in step 3) into the hot press machine, and perform hot pressing under the hot pressing process conditions, so that the plasma-treated thermoplastic film between each layer of wood fiber or wood shavings is fully melted, spread and infiltrated In the porous structure of wood fibers or wood shavings;

5) Transfer the hot-pressed plate in step 4) to a cold press for post-setting treatment.

The advantages of the present invention are:

(1) Formaldehyde-free environmentally friendly solid wood particle board and fiberboard can be produced, which is the most notable feature; (2) The prepared board has high bonding strength, bending resistance and good water resistance, and due to the use of The thermoplastic film is pretreated by plasma, the surface activity of the thermoplastic film is increased, the interface bonding force between the thermoplastic film and wood fiber or wood shavings is improved, and the mechanical properties of the board are greatly improved.

Description of drawings

Accompanying drawing 1 is the structural representation of the environment-friendly board material that is used for custom-made furniture production.

detailed description

An environment-friendly board for custom furniture production, its structure includes at least three layers of wood fiber or wood shavings, and a plasma-modified thermoplastic film material disposed between the upper and lower surfaces of each layer of wood shavings or wood fibers As for the bonding layer, the environment-friendly board is one or both of particleboard and fiberboard.

The bonding layer of the plasma-modified thermoplastic film material is laminated with modified wood shavings or wood fibers by means of layered paving, that is, using a hot pressing-cold pressing series flat pressing process.

The moisture content of the wood shavings or wood fibers is controlled at 0-15%.

The thermoplastic film material is one of polyethylene film PE, polypropylene film PP and polyvinyl chloride film PVC supplied in rolls, and the thickness is controlled at 0.01-0.08 mm.

Before the thermoplastic film material is compounded with wood fiber or wood shavings, the surface is pretreated with plasma.

Below in conjunction with accompanying drawing 1 and embodiment, the present invention will be described in further detail.

Example 1:

1) Dry the wood shavings to a moisture content of 2%, and then divide the dried wood shavings into 19 parts;

2) Select a PE film with a thickness of 0.02 mm as the adhesive, and cut the PE film into the same size as the target board, and use plasma to modify the surface of the PE film;

3) The plasma-modified PE film and the dried wood shavings are assembled according to the method shown in Figure 1, so that each layer of wood shavings a is evenly spread on the PE film b, and at the same time, the last layer of wood shavings a layer of plasma-treated PE film is laid on the upper surface;

4) Send the paved material into the hot press, so that the PE film is fully melted, spread and infiltrated into the porous structure of the wood shavings. The hot-pressing temperature is 150°C, the hot-pressing pressure is 1.0 MPa, and the hot-pressing time is 1.0 min·mm ^-1 ;

5) The hot-pressed board is quickly transferred to the cold press for post-setting treatment, so that the melted PE film is tightly combined with the wood shavings through mechanical locking. Among them, cold pressing pressure: 1 MPa, cold pressing time: 10 min;

6) The particleboard profiles were cut and sanded in sequence to obtain finished particleboards, which were placed under natural conditions for 48 hours, and finally an environmentally friendly board with a density of 0.8 g·cm ^-3 was obtained.

Example 2:

The difference between this embodiment and Embodiment 1 is that the thickness of the PE film is 0.04 mm, and the rest are the same.

Example 3:

The difference between this embodiment and Embodiment 1 is that the density of the finally obtained board is 1.0 g·cm ^-3 , and the rest are the same.

Example 4:

The difference between this embodiment and embodiment 1 is that: the thermoplastic film is made of PP film, the hot pressing temperature is 190° C., and the rest are the same.

According to the provisions and requirements of GB/T 17657-2013 "Test Methods for Physical and Chemical Properties of Wood-based Panels and Decorative Wood-based Panels", the standard test pieces prepared in the above four examples were tested, and the test results are shown in Table 1. In a word, the environment-friendly board prepared by the method of the present invention has no formaldehyde release, good water resistance, and better performance than ordinary wood-based boards. It is a good substitute for ordinary particle boards and medium-density fiberboards, and can be widely used in the manufacture of customized furniture.

Table 1 Performance of environment-friendly panels under different conditions

Example 24h TS (%) MOR (MPa) MOE (MPa) IB (MPa) 1 3.53 37.8 2880 1.22 2 2.14 42.3 3200 1.95 3 3.03 47.7 3440 1.47 4 2.86 40.2 3100 1.48

The above is a preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, all equivalent changes and modifications made according to the patent scope of the present invention should fall within the scope of the present invention.

Claims (2)

1. A kind of 1. environment protection type sheet material for production of having furniture made to order, it is characterized in that being one kind in particieboard or fiberboard or two Kind, particieboard or fiberboard comprise at least three layers of wood fibre or wood particle, and are arranged at every layer of wood particle or wooden The tack coat that the thermoplastic film material handled through plasma modification between fiber upper and lower surface is formed；

   The tack coat of the described thermoplastic film material handled through plasma modification, the method mated formation using layering, that is, is utilized The concora crush technique of hot pressing-cold pressing series connection, carried out with modified wood particle or wood fibre compound;

   The moisture control of the wood particle or wood fibre is 0 ~ 15%；

   Described thermoplastic film material is polyethylene film PE, polypropylene film PP, the polyvinyl chloride film PVC supplied in rolls In one kind, thickness control is in 0.01 ~ 0.08 mm；

   Before described thermoplastic film material and wood fibre or wood particle are compound, carry out surface with plasma in advance and locate in advance Reason.
2. A kind of 2. preparation method of environment protection type sheet material for production of having furniture made to order as claimed in claim 1, it is characterized in that including such as Lower step：

   1）By wood fibre or wood particle drying to moisture content 0 ~ 15%, further according to target plate thickness determine every layer it is wooden The number of plies of the dosage and thermoplastic film of wood shavings or wood fibre；

   2）By thermoplastic film cut into target plate breadth identical size, and carry out plasma treatment；

   3）By several times by step 1）In dried wood fibre or wood particle equably thermoplasticity of the spreading in plasma treatment Above thin-film material, the thermoplasticity of one layer of plasma treatment of wherein last layer of wood particle or the laying of wood fibre upper surface is thin Film；

   4）By step 3）In the material that paves be sent into hot press, hot pressing is carried out under hot pressing technique, make every layer it is wooden The thermoplastic film of plasma treatment is fully melted, sprawled and penetrates into wood fibre or wood particle between fiber or wood particle Cellular structure in；

   5）By step 4）Sheet material after middle hot pressing is transferred to progress later stage heat treatment in cold press；

   Described hot pressing technique is：Hot pressing temperature is 120 ~ 200 DEG C, and hot pressing pressure is 0.5 ~ 5 MPa, and hot pressing time is 0.5~2 min·mm^-1；

   Described hot pressing pressure is identical with cold pressing pressure, and the cold pressing time is 5 ~ 20 min.