CN101021052B

CN101021052B - No-dust paper making process

Info

Publication number: CN101021052B
Application number: CN2007100384764A
Authority: CN
Inventors: 曹志祥; 曹明良
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-26
Filing date: 2007-03-26
Publication date: 2011-06-01
Anticipated expiration: 2027-03-26
Also published as: CN101021052A

Abstract

The no-dust paper making process includes the following steps: 1. weighing materials including hot molten compounded supershort fiber 25-45 wt% and wood pulp fiber 55-75 wt%; 2. opening; 3. mixing in a fine crusher; 4. vacuum sucking the fiber mixture onto the forming net to form paper web; 5. heating the paper web to soften, smelt and cure the fiber in the paper web; and 6. cooling, cutting and winding. The optimized production process has low cost, increased product yield and less environment influence, and the product has high bulkiness and high tensile strength.

Description

A kind of manufacture method of dust-free paper

Technical field

The present invention relates to a kind of manufacture method of dust-free paper.

Background technology

Dust-free paper claims heat seal dry method paper or the expanded paper of dry method again, and it originates from the American-European and Japanese of last century eight, the nineties the earliest, mostly is raw material with the Time of Fluff Slurry, produces because medical treatment and sanitary paper.

Along with the development of dust-free paper production technology, develop into heat seal, macromolecule (SAP) dust-free paper by single Time of Fluff Slurry dust-free paper.But, exist production equipment too brief in the domestic existing dust-free paper production, so that output is on the low side.Dust is relatively more serious again in process of production, has brought very big influence for staff and social environment.Again because of the workshop air mass flow is little, adopt the cost of workshop steam humidification big with the humidity of utilizing outside air, and humidity is too low, blended fiber because of too dried shortage moisture is difficult to form tight between be connected, after excess temperature hot pressing, no rebound phenomena, bulking intensity and tension intensity are also not enough.

Summary of the invention

The object of the present invention is to provide a kind of manufacture method of dust-free paper, to production technology optimization, production equipment is perfect, and production cost is low, can increase production output, and dust is few, and is little to employee and ambient influnence, and product has bulking intensity and tension intensity preferably.

For achieving the above object, technical scheme of the present invention is, a kind of manufacture method of dust-free paper, and it comprises the steps:

1) material composition mass percent:

The compound superbhort fiber of hot melt, 25～45,

The Time of Fluff Slurry wood pulp fibre, 55～75;

2) by the said ratio computation weigh, shredding, mixing, the compound superbhort fiber of hot melt, the full processing of Time of Fluff Slurry wood pulp volume slurry or half are handled, and mix and form;

3) fine machine measures the compound superbhort fiber of hot melt to collecting, smart pulverizer is arrived in shredding to accumulator through shredding earlier; The Time of Fluff Slurry wood pulp fibre through boulder crusher metering pulverizing, arrives smart pulverizer shredding earlier again; Both mix in smart pulverizer;

4) in smart pulverizer, mix the back and deliver to screen cylinder on the former,,, blended fiber is scattered on forming web Web forming by vacuum draw under the forming web through screen cylinder, the opposite stirring of nail rod by seperator; Wherein, adopt the wind flow forming technique, form by a plurality of moulded heads, the fibre-bearing air-flow is introduced in two groups of homodromal screen cylinders through air inlet and stirs, make most of fiber dispersion become single fiber, under the effect of dispersed single fiber vacuum draw under forming net, be adsorbed onto by the circular hole of rotation on the screen cylinder and form paper web on the forming net; And the air inlet on forming web is established damping device, and controlled humidity remains on 60～75%;

5) it is online the paper web after the moulding to be passed to hot case through the transition net again, and heater temperature 125～160 degree penetrate through hot blast, make fiber softening, fusion and fixed in the paper web;

6) pass through cooling system again, cut the warehouse-in of reeling at last.

Again, the compound superbhort fiber of described hot melt is composited by polypropylene, polyethylene fiber.

In the step 4), under forming net, can move up and down by some evacuated panels, the size of control air-flow, thus controlled wind speed is so that the accurate grammes per square metre of controlling fiber.

Move left and right mainly is in order to keep the accurate grammes per square metre of dust-free paper.When the grammes per square metre on the online left side of moulding was light, evacuated panel just moved right; Otherwise, then as the same.Moving up and down mainly is for the speed of controlling wind-force and the size of air quantity, changes the speed of different wind-force and the size of air quantity according to the specific requirement of product.On move and can increase air quantity, reduce wind speed; Otherwise it is then as the same.

As adopting three to keep flat airflow plate with holes, the not perforated flat plate of two oblique 45-60 degree is regulated the height of each plate and is regulated wind speed together.

In addition, vacuum draw adopts the blower fan of being with frequency conversion in the step 4).

Again, described damping device is a kind of water injector.

Beneficial effect of the present invention

The present invention is by the optimization to production technology, and production equipment is perfect, and production cost is low, can increase production output, and dust is few, and is little to employee and ambient influnence, and product has bulking intensity and tension intensity preferably.

Description of drawings

Fig. 1 is the process chart of dust-free paper manufacture method of the present invention.

The specific embodiment

Referring to Fig. 1, the manufacture method of dust-free paper of the present invention, it comprises the steps:

Step 101, by proportioning computation weigh, shredding, mixing, the compound superbhort fiber of hot melt, the full processing of Time of Fluff Slurry wood pulp volume slurry or half are handled, and mix and form;

Fine machine measures to collecting, smart pulverizer is arrived in shredding to accumulator through shredding earlier for step 102, the compound superbhort fiber of hot melt; The Time of Fluff Slurry wood pulp through boulder crusher metering pulverizing, arrives smart pulverizer shredding earlier again; Both mix in smart pulverizer;

Step 103 is mixed the back and is delivered to screen cylinder on the former by seperator in smart pulverizer, through screen cylinder, the opposite stirring of nail rod, by vacuum draw under the forming web, blended fiber is scattered on forming web Web forming; Wherein, adopt the wind flow forming technique, form by a plurality of moulded heads, the fibre-bearing air-flow is introduced in two groups of homodromal screen cylinders through air inlet and stirs, make most of fiber dispersion become single fiber, under the effect of dispersed single fiber vacuum draw under forming net, be adsorbed onto by the circular hole of rotation on the screen cylinder and form paper web on the forming net; And the air inlet on forming web is established damping device, and controlled humidity remains on 60-75%;

Step 104, it is online that the paper web after the moulding is passed to hot case through the transition net again, and heater temperature 125～160 degree penetrate through hot blast, make fiber softening, fusion and fixed in the paper web;

Step 105 is passed through cooling system again, cuts the warehouse-in of reeling at last.

Embodiment 1:

With the compound superbhort fiber fiber of 35% hot melt that accounts for the blended fiber gross weight, 75% wood pulp fibre, through computation weigh, shredding, by the screen cylinder rightabout stirring of nail rod together, make blended fiber mutually tight between, pass through the swabbing action of vacuum tank under the forming web again, form uniform paper web and penetrate oven dry through the double-edged hot blast of temperature of superheated header 135-145 degree again and form.

Embodiment 2:

The compound superbhort fiber of 30% hot melt (ES) fiber of blended fiber gross weight will be accounted for, (absorbent material of salts solution such as moisture or saline solution is called super absorbent resin for 50% wood pulp fibre and 20% SAP, english abbreviation is SAP), can be made into the dust-free paper that contains the SAP composite sheet by the production method of embodiment 1.Get final product to add a macromolecule metered dose dispensers in the middle of two forming parts again.

Embodiment 3

To account for the compound superbhort fiber of 35% hot melt (ES) fiber of blended fiber gross weight, 55% wood pulp fibre and 10% medicine material, the production method by embodiment 1,2 can be made into the medicine dust-free paper.

Embodiment 4

To account for the compound superbhort fiber of 35% hot melt (ES) fiber of blended fiber gross weight, 65% wood pulp fibre can be made into the expanded paper of dry method by the production method of embodiment 1.

Embodiment 5

To account for the compound superbhort fiber of 35% hot melt (ES) fiber of blended fiber gross weight, 45% wood pulp fibre and 15% rim charge fiber can be made into the daily necessities of shoe-pad wiper and so on by the production method of embodiment 1.

Claims

1. the manufacture method of a dust-free paper, it comprises the steps:

1) material composition mass percent:

The compound superbhort fiber of hot melt, 25～45,

The Time of Fluff Slurry wood pulp fibre, 55～75;

4) in smart pulverizer, mix the back and deliver to screen cylinder on the former,,, blended fiber is scattered on forming web Web forming by vacuum draw under the forming web through screen cylinder, the opposite stirring of nail rod by seperator; Wherein, adopt the wind flow forming technique, form by a plurality of moulded heads, the fibre-bearing air-flow is introduced in two groups of homodromal screen cylinders through air inlet and stirs, make most of fiber dispersion become single fiber, under the effect of dispersed single fiber vacuum draw under forming web, be adsorbed onto by the circular hole of rotation on the screen cylinder and form paper web on the forming web, simultaneously, by some evacuated panels under the forming web can about, move left and right, the size of control air-flow, thus controlled wind speed is so that the accurate grammes per square metre of controlling fiber; And the air inlet on forming web is established damping device, and controlled humidity remains on 60～75%;

6) pass through cooling system again, cut the warehouse-in of reeling at last.

2. the manufacture method of dust-free paper as claimed in claim 1 is characterized in that, the compound superbhort fiber of described hot melt is composited by polypropylene, polyethylene fiber.

3. the manufacture method of dust-free paper as claimed in claim 1 is characterized in that, vacuum draw adopts the blower fan of band frequency conversion in the described step 4).

4. the manufacture method of dust-free paper as claimed in claim 1 is characterized in that, described damping device is a kind of water injector.