CN104654742A

CN104654742A - Method for drying plates

Info

Publication number: CN104654742A
Application number: CN201410257309.9A
Authority: CN
Inventors: 梁未
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-11
Filing date: 2014-06-11
Publication date: 2015-05-27

Abstract

The invention discloses a method for drying plates and relates to the field of a wood processing technology. The method comprises the following steps: the plates are obliquely stacked and placed in a closed drying chamber, so that the low stacking end is toward a heat source, and a gap is present among stacked plates; the temperature of the drying chamber is gradually increased by 8-9 degrees centigrade/10 minutes based on the ambient temperature, and the temperature is kept for 2-3 hours when being increased above 60 degrees centigrade; steam containing a stabilizer is sprayed in the drying chamber, the temperature of the drying chamber is increased to 100-110 degrees centigrade in a first steam spraying period and kept for 3-5 hours, every half an hour, steam is sprayed once in a heat preservation process, and the steam spraying time is 10-15 minutes; the temperature is reduced to 60 degrees centigrade, and the plates aren't heated after the moisture content is within 10%; the plates are unloaded after being naturally cooled for 20-30 minutes. According to the method, the plates cannot be cracked and deformed in a drying process, thus the stability of the plate size is improved.

Description

The drying means of sheet material

Technical field

The present invention relates to wood processing technique field, especially a kind of drying means of sheet material.

Background technology

The water content of timber is usually all higher, after timber is cut into sheet material, all needs to carry out drying process to sheet material.Existing a kind of sheet material drying method is by sheet material stacking in the space vacuumized, and by drying the sheet material in vacuum environment, this drying means exists following deficiency: 1, sheet material is under the effect of internal stress, easily ftractures; 2, the moisture in sheet material is under vacuum drying environment, and moisture distributes too fast, easily produces distortion.

Summary of the invention

The object of this invention is to provide a kind of drying means of sheet material, this method can solve the problem that the drying of existing sheet material is easy to ftracture and be out of shape.

In order to solve the problem, the technical solution used in the present invention is: the drying means of this sheet material comprises the following steps:

A, the stacking that to be tilted by sheet material are inserted in airtight hothouse, and the one end making stacking lower is arranged towards thermal source, is provided with gap between every laminate material of stacking;

B, by the temperature of hothouse from room temperature by every 10 minutes increase by 8 DEG C-12 DEG C progressively promote, when temperature rises to more than 60 DEG C, be incubated 2 little Shi – 3 hours;

C, in hothouse, spray into steam containing stabilizing agent, by the temperature to 100 of hothouse DEG C – 110 DEG C in during spraying into steam first, then 3 little Shi – 5 hours are incubated, in insulating process, spray into once described steam every half an hour, the time at every turn spraying into steam is 10 Fen Zhong – 15 minutes;

D, be cooled to 60 DEG C, detect sheet material moisture content by moisture apparatus and reach after within 10%, stop heating;

E, naturally cooling 20 Fen Zhong –, after 30 minutes, draw off.

In the technical scheme of the drying means of above-mentioned sheet material, technical scheme can also be more specifically: the angle of inclination of described sheet material and horizontal plane is 6 degree-10 and spends.

Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:

1, sheet material is obliquely installed, and lower one end is towards thermal source, and the uniform moisture being conducive to sheet material distributes, and avoids intermediate moisture value many, and two water content is few, and produces warpage.

2, gradient increased temperature can prevent stress mutation, ftractures to avoid sheet material.

3, the steam that spray is steamed contains stabilizing agent, can improve the dimensional stability of sheet material further.

Detailed description of the invention

Below in conjunction with embodiment, the invention will be further described:

Embodiment 1

The drying means of the sheet material in the present embodiment comprises the following steps:

A, the stacking that to be tilted by sheet material are inserted in airtight hothouse, and the one end making stacking lower is arranged towards thermal source, and be provided with gap between every laminate material of stacking, the gap between levels sheet material is 1 centimetre, and the angle of inclination of every laminate material and horizontal plane is 6 degree;

B, by the temperature of hothouse from room temperature by every 10 minutes increase by 8 DEG C progressively promote, when temperature rises to more than 60 DEG C, be incubated 3 hours;

C, in hothouse, spray into steam containing stabilizing agent, by the temperature to 100 of hothouse DEG C in during spraying into steam first, be then incubated 5 hours, in insulating process, spray into once described steam every half an hour, the time at every turn spraying into steam is 10 minutes;

E, naturally cooling, after 20 minutes, draw off.

Embodiment 2

A, the stacking that to be tilted by sheet material are inserted in airtight hothouse, and the one end making stacking lower is arranged towards thermal source, and be provided with gap between every laminate material of stacking, the gap between levels sheet material is 1.5 centimetres, and the angle of inclination of every laminate material and horizontal plane is 8 degree;

B, by the temperature of hothouse from room temperature by every 10 minutes increase by 10 DEG C progressively promote, when temperature rises to more than 60 DEG C, be incubated 2.5 hours;

C, in hothouse, spray into steam containing stabilizing agent, by the temperature to 105 of hothouse DEG C in during spraying into steam first, be then incubated 4 hours, in insulating process, spray into once described steam every half an hour, the time at every turn spraying into steam is 12 minutes;

E, naturally cooling, after 25 minutes, draw off.

Embodiment 3

A, the stacking that to be tilted by sheet material are inserted in airtight hothouse, and the one end making stacking lower is arranged towards thermal source, and be provided with gap between every laminate material of stacking, the gap between levels sheet material is 1 centimetre, and the angle of inclination of every laminate material and horizontal plane is 10 degree;

B, by the temperature of hothouse from room temperature by every 10 minutes increase by 12 DEG C progressively promote, when temperature rises to more than 60 DEG C, be incubated 3 hours;

C, in hothouse, spray into steam containing stabilizing agent, by the temperature to 110 of hothouse DEG C in during spraying into steam first, be then incubated 3 hours, in insulating process, spray into once described steam every half an hour, the time at every turn spraying into steam is 15 minutes;

E, naturally cooling, after 30 minutes, draw off.

Claims

1. a drying means for sheet material, is characterized in that comprising the following steps:

E, naturally cooling 20 Fen Zhong –, after 30 minutes, draw off.

2. the drying means of sheet material according to claim 1, is characterized in that: the angle of inclination of described sheet material and horizontal plane is 6 degree-10 and spends.