Process quality control of peach blossom core veneer

Process quality control of peach blossom core veneer

With the shortage of forestry resources and the increase of the price of solid wood materials, the technology of sticking peach blossom core veneer is more and more used in furniture The process of sticking peach blossom core veneer has the advantages of beautiful texture, strong sense of reality and low cost. However, some quality problems in the process of sticking peach blossom core veneer will also affect the overall quality of furniture products. Based on the analysis of these problems, the corresponding improvement measures are proposed to effectively control the quality of products.

Mahogany veneer furniture is based on MDF and particleboard, with mahogany veneer on the surface. The frame of furniture is still solid wood material, so as to achieve the effect of pure solid wood.

Mahogany skin

There are two kinds of mahogany veneer: natural mahogany veneer and artificial mahogany veneer. The most suitable material, specification and color of mahogany veneer should be selected according to the product requirements.

(1) grade selection: according to the national standard, there are grade I and grade II peach blossom skin Generally, the first grade peach blossom core veneer should be selected for the important surface, while the second grade peach blossom core veneer can be selected for the secondary surface. The selected peach blossom core skin should be free of dead knots, decayed and white edges, and the important surfaces of some parts should not be allowed to have too many mineral stripes and other defects.

(2) texture selection: the texture of peach blossom core skin is divided into straight grain and mountain grain. According to the requirements of the product, the texture of peach blossom core skin should be selected. -The texture of group products should be basically the same.

(3) color selection: the color of the peach blossom core skin of the same tree species is dark and light, according to the color sample of the single product of the production material. Choose the right peach blossom skin for finishing.

(4) select specifications: select appropriate length and width. The minimum surplus material shall be considered.

Cut peach blossom skin

The process is to cut the peach blossom core face into a peach blossom core face that can be assembled to meet the specification and size requirements of the components. The width of single peach blossom skin is not enough. Several peach blossom skin are needed for splicing. In order to achieve the decorative effect, different textures, colors and tree species of veneer are spliced into patterns (short for “mosaic”). In order to ensure the tightness and flatness of the joint, it is necessary to cut the peach blossom core skin.

In general, peach blossom core veneer cutting machine is used to cut peach blossom core veneer. This equipment can cut 2800mm long and 20mm thick peach blossom core veneer. Generally, the length direction cutting is carried out first, and then the width direction cutting. When cutting the peach blossom skin, allowance shall be left. The general allowance in the length direction is 20 mm. In order to prevent burr on the edge of the peach blossom skin during the cutting process, a cushion strip is placed at the bottom of the peach blossom skin to be cut.

The cutting quality shall be achieved. The cut of peach blossom core skin shall be smooth and straight without burr or tear.

Peach blossom skin

The splicing of peach blossom skin is to splice the cut peach blossom skin to meet the requirements.

Many furniture enterprises use the advanced glue line splicing machine to splice the peach blossom core skin Put the two pieces of peach blossom core skin to be spliced on both sides of the feeding guide plate on the table of the sewing machine. The sewing machine automatically presses the hot-melt glue line heated at high temperature onto the two peach blossom core skin in the form of S-shaped uniform glue. Tightly glue the two peach blossom core skin together.

It is impossible to process some small peach blossom skin and some rubber stitching machines with poor flatness. It can be spliced by hand-held stitching machine. The principle is similar to that of rubber stitching machine. It can also be spliced with perforated water-soluble adhesive paper. At this time, pay special attention to the tightness of the seam.

To splice the peach blossom core veneer, first assemble the peach blossom core veneer to be spliced according to the design pattern on a flat workbench, and then glue the peach blossom core veneer with adhesive tape on the front side to ensure tight splicing. Then reverse the stuck peach blossom core veneer, and stick the peach blossom core veneer firmly on the back side of the peach blossom core veneer with a portable splicing machine or perforated water-soluble adhesive paper. Then sand off the front side. In this way, the mosaic of peach blossom core face leather is completed.

The spliced peach blossom core skin shall be tight and free from cracks. Both ends shall be neat and free from defects such as decayed, white edge or dead joint.

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