Figure 1 shows that: when the amount of CHINA COLOR FELT is between 0.1 and 0.5, the product of the apparent density with the total amount of CHINA COLOR FELT decreases. This is the experimental conditions, CHINA COLOR FELT is helpful to increase the melt viscosity, thereby effectively preventing the escape of gas in the melt, so that the apparent overall density reduction product.

Problems encountered in the production process are:

1 Because it is handmade, cut is not in place, the shape cannot think of a good expressed, some curves simplified design to facilitate cutting, styling tends to make simple ideas down.

(2) the size of the design there is a deviation, affecting aesthetic effect.

3 draw lines with a ruler, low precision is not accurate enough, there is also painted irregularities.

Attention problems:

1 observed characteristics of the product shape, design packaging, making it fit with the product, on this basis, to apply the terms of the structural innovations tray.

2 according to the required tray volume manufacturing dimensions strictly calculated

3 production, crop marks to draw neat, in order to ensure cartons to achieve the desired state.