CN209428836U

CN209428836U - A kind of process units of high grammes per square metre craft paper

Info

Publication number: CN209428836U
Application number: CN201920066238.2U
Authority: CN
Inventors: 杨文恒; 韩冲; 孟峰
Original assignee: Nine Dragons Paper Holdings Ltd
Current assignee: Nine Dragons Paper Holdings Ltd
Priority date: 2019-01-15
Filing date: 2019-01-15
Publication date: 2019-09-24
Anticipated expiration: 2029-01-15

Abstract

This application discloses a kind of process units of high grammes per square metre craft paper, including the first wet end, the second wet end, third wet end and the 4th wet end, first wet end includes primary headbox, the first forming net and the first composite roll；Second wet end includes secondary headbox, the second forming net and the second composite roll；The third wet end includes third head box, third forming net and third composite roll；4th wet end includes the 4th head box, the 4th forming net, the paper pulp of paper pulp and the second forming net on the third forming net is compounded to form two layers of the first extrusion coating paper pulp layer by the third composite roll, second composite roll is pressed on the 4th forming net for the paper pulp in the first extrusion coating paper pulp layer and the 4th forming net to be compounded to form to three layers of the second extrusion coating paper pulp layer, first composite roll is pressed on the 4th forming net, for by the first forming net paper pulp and the second compound pulp be compounded to form four layers of third compound pulp.

Description

A kind of process units of high grammes per square metre craft paper

Technical field

This application involves a kind of process units of high grammes per square metre craft paper.

Background technique

In order to adapt to energy-saving and environment-friendly requirement, Packaging Reduce, lightweight have become industry common recognition, and part carton is gradually It is substituted using single layer paper, to paper base weight itself and intensity, more stringent requirements are proposed for this, and craft paper is mostly 2 layers .3 layers at present Design, grammes per square metre are no more than 300 grams, individual is difficult to meet requirements above, and the high grammes per square metre craft paper of spy's four formable layers of research and development produces dress It sets and production method is for substituting part corrugated case

Summary of the invention

The application technical problems to be solved are to provide a kind of process units of high grammes per square metre craft paper.

In order to solve the above-mentioned technical problem, this application provides a kind of process units of high grammes per square metre craft paper, the lifes Produce device include the first wet end, the second wet end, third wet end and the 4th wet end, first wet end include primary headbox, First forming net and the first composite roll；Second wet end includes secondary headbox, the second forming net and the second composite roll；Institute The third wet end stated includes third head box, third forming net and third composite roll；4th wet end includes the 4th stream slurry Case, the 4th forming net, the third composite roll answer the paper pulp of paper pulp and the second forming net on the third forming net Two layers of formation of the first extrusion coating paper pulp layer is closed, second composite roll is pressed on the 4th forming net and is used for first Paper pulp in extrusion coating paper pulp layer and the 4th forming net is compounded to form three layers of the second extrusion coating paper pulp layer, and first composite roll supports Be pressed on the 4th forming net, for by first forming net paper pulp and the second compound pulp be compounded to form four The third compound pulp of layer.

Preferably, the process units further includes the suction couch roll for four layers of third compound pulp to be dehydrated.

Preferably, the third wet end is additionally provided with the first dewatering net.

Preferably, the 4th wet end is additionally provided with the second dewatering net.

Preferably, the 4th wet end is provided with multiple dewatering boxs.

Preferably, the third head box is dilution water head box.

Preferably, the 4th head box liquid level dilution water head box.

A kind of process units of high grammes per square metre craft paper of the application overcomes on high grammes per square metre ox cacaine single layer in the prior art Net concentration is high, and molding evenness and banner homogeneity are crucial problems, breaks through traditional triple layer designs, increases by one layer of slurry, using 4 layers Design, while upper dewatering net is configured at higher two layers of grammes per square metre, improve dehydration, improves evenness；High two layers of grammes per square metre is all made of Banner on-line dilution regulating device guarantees banner homogeneity.The process units of the application can produce 300-500 grams of craft paper, replace For carton, greatly reduce demand of the packaging industry to fibrous raw material, while reducing the process of lap machine, save resource and Environmental protection and energy saving；Efficiently solving high grammes per square metre paper, only bottom grammes per square metre is high, the problem of bottom evenness and banner homogeneity difference, and 3.4 layers points Grammes per square metre is carried on a shoulder pole, and uses banner on-line dilution water head box, the on-line control of banner is realized, substantially improves the even of high grammes per square metre paper Degree and intensity reduce the use of chemical industry enhancing raw material.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of the process units of high grammes per square metre craft paper.

Wherein: 1, the first wet end；11, primary headbox；12, the first forming net；13, the first composite roll；2, the second wet end； 21, secondary headbox；22, the second forming net；23, the second composite roll；3, third wet end；31, third head box；32, third at Type net；33, third composite roll；34, the first dewatering net；4, the 4th wet end；41, the 4th head box；42, the 4th forming net；43, it takes off Water tank；44, the second dewatering net；5, suction couch roll.

Specific embodiment

The application is described further in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be with It more fully understands the application and can be practiced, but illustrated embodiment is not as the restriction to the application.

As shown in Figure 1, this application provides a kind of process units of high grammes per square metre craft paper, the process units includes the One wet end 1, the second wet end 2, third wet end 3 and the 4th wet end 4, first wet end 1 include primary headbox 11, the first one-tenth Type net 12 and the first composite roll 13；Second wet end 2 includes secondary headbox 21, the second forming net 22 and the second composite roll 23；The third wet end 3 includes third head box 31, third forming net 32 and third composite roll 33；4th wet end 4 Including the 4th head box 41, the 4th forming net 42, the third composite roll 33 is by the paper pulp on the third forming net 32 Two layers of the first extrusion coating paper pulp layer is compounded to form with the paper pulp of the second forming net 22, second composite roll 23 is pressed on described The 4th forming net 42 on for the paper pulp on the first extrusion coating paper pulp layer and the 4th forming net 42 to be compounded to form the second of three layers Extrusion coating paper pulp layer, first composite roll 13 are pressed on the 4th forming net 42, for forming described first Paper pulp and the second compound pulp on net 12 are compounded to form four layers of third compound pulp.The process units further includes being used for The suction couch roll 5 that four layers of third compound pulp is dehydrated.The third wet end 3 is additionally provided with the first dewatering net 34.It is described The 4th wet end 4 be additionally provided with the second dewatering net 44.4th wet end 4 is provided with multiple dewatering boxs 43.The third Head box 31 is dilution water head box.4th head box, the 41 liquid level dilution water head box.

Embodiment described above is only the preferred embodiment lifted to absolutely prove the application, the protection model of the application It encloses without being limited thereto.Those skilled in the art made equivalent substitute or transformation on the basis of the application, in the application Protection scope within.The protection scope of the application is subject to claims.

Claims

1. a kind of process units of high grammes per square metre craft paper, which is characterized in that the process units includes the first wet end, the second net Portion, third wet end and the 4th wet end, first wet end include primary headbox, the first forming net and the first composite roll；Institute The second wet end stated includes secondary headbox, the second forming net and the second composite roll；The third wet end includes third stream slurry Case, third forming net and third composite roll；4th wet end includes the 4th head box, the 4th forming net, the third The paper pulp of paper pulp and the second forming net on the third forming net is compounded to form two layers of the first compound pulp by composite roll Layer, second composite roll are pressed on the 4th forming net and are used for the first extrusion coating paper pulp layer and the 4th forming net Paper pulp be compounded to form three layers of the second extrusion coating paper pulp layer, first composite roll is pressed on the 4th forming net, For by first forming net paper pulp and the second compound pulp be compounded to form four layers of third compound pulp.

2. a kind of process units of high grammes per square metre craft paper as described in claim 1, which is characterized in that the process units is also Including the suction couch roll for four layers of third compound pulp to be dehydrated.

3. a kind of process units of high grammes per square metre craft paper as claimed in claim 2, which is characterized in that the third wet end is also It is provided with the first dewatering net.

4. a kind of process units of high grammes per square metre craft paper as claimed in claim 3, which is characterized in that the 4th wet end is also It is provided with the second dewatering net.

5. a kind of process units of high grammes per square metre craft paper as claimed in claim 4, which is characterized in that the 4th wet end is set It is equipped with multiple dewatering boxs.

6. a kind of process units of high grammes per square metre craft paper as claimed in claim 5, which is characterized in that the third head box For dilution water head box.

7. a kind of process units of high grammes per square metre craft paper as claimed in claim 6, which is characterized in that the 4th head box Liquid level dilution water head box.