阅读说明：本技术 基于在线监测的高强度抗菌瓦楞纸的制作方法 (Manufacturing method of high-strength antibacterial corrugated paper based on online monitoring ) 是由 冯桂萍 施闻君 于 2021-01-04 设计创作，主要内容包括：本发明公开了基于在线监测的高强度抗菌瓦楞纸的制作方法,包括如下步骤：步骤1：取芯层抗菌纸,通过热压将其压成波浪形；步骤2：取第一辅助支撑层和第二辅助支撑层,通过胶黏剂将第一辅助支撑层和第二辅助支撑层黏贴在芯层抗菌纸的底面和顶面上；步骤3：取第一面纸层和第二面纸层；第一面纸层通过胶黏剂黏贴在第二辅助支撑层的顶面上；第二面纸层通过胶粘剂黏贴在第一辅助支撑层的底面上；步骤4：进行厚度监测；本申请在纸板在瓦楞纸的内部设置芯层抗菌纸；一方面可以有效起到抗菌的作用；另一方面也起到了一定的防潮功能；其次,通过在线厚度监测装置进行厚度监测；可以实时有效监测纸板生产性能；对纸板重量进行有效控制。(The invention discloses a method for manufacturing high-strength antibacterial corrugated paper based on-line monitoring, which comprises the following steps: step 1: the core layer antibacterial paper is pressed into a wave shape through hot pressing; step 2: taking a first auxiliary supporting layer and a second auxiliary supporting layer, and adhering the first auxiliary supporting layer and the second auxiliary supporting layer to the bottom surface and the top surface of the core layer antibacterial paper through an adhesive; and step 3: taking a first surface paper layer and a second surface paper layer; the first surface paper layer is adhered to the top surface of the second auxiliary supporting layer through an adhesive; the second surface paper layer is adhered to the bottom surface of the first auxiliary supporting layer through an adhesive; and 4, step 4: monitoring the thickness; the application is that the antibacterial paper of the core layer is arranged in the corrugated paper of the paperboard; on one hand, the antibacterial function can be effectively achieved; on the other hand, the waterproof cloth also has certain moisture-proof function; secondly, monitoring the thickness by an online thickness monitoring device; the production performance of the paperboard can be effectively monitored in real time; the weight of the paperboard is effectively controlled.)

1. The manufacturing method of the high-strength antibacterial corrugated paper based on-line monitoring is characterized by comprising the following steps of: the method comprises the following steps:

step 1: the core layer antibacterial paper is pressed into a wave shape through hot pressing;

step 2: taking a first auxiliary supporting layer and a second auxiliary supporting layer, and adhering the first auxiliary supporting layer and the second auxiliary supporting layer to the bottom surface and the top surface of the core layer antibacterial paper through an adhesive;

and step 3: taking a first surface paper layer and a second surface paper layer; the first surface paper layer is adhered to the top surface of the second auxiliary supporting layer through an adhesive; the second surface paper layer is adhered to the bottom surface of the first auxiliary supporting layer through an adhesive;

and 4, step 4: after the corrugated paper finished in the step 3 is subjected to rear end drying, thickness monitoring is carried out through an online thickness monitoring device;

and 5: and if the thickness of the corrugated paper is abnormal, giving an alarm.

2. The method for manufacturing the high-strength antibacterial corrugated paper based on the online monitoring as claimed in claim 1, wherein the method comprises the following steps: the manufacturing method of the core layer antibacterial paper comprises the following steps:

a1: and (2) mixing softwood pulp and hardwood pulp according to the mass ratio of 50-70: blending pulp according to the proportion of 30-50, wherein the beating degree of the pulp after beating is as follows: 60-80 DEG SR of softwood pulp and 20-40 DEG SR of hardwood pulp;

step 2: sizing the sizing agent by taking an internal sizing agent, wherein the internal sizing agent comprises the components of alkyl ketene dimer, carbon quantum dots, nano ZnO and nano CaCO₃；

And step 3: adding 0.1-0.5% of retention aid, dewatering in a net part, squeezing, drying in a front section, adding surface sizing agent PVA for surface sizing, wherein the sizing amount is 1-2g/m²And then the product is dried at the later stage and is calendered to form a finished product.

3. The method for manufacturing the high-strength antibacterial corrugated paper based on the online monitoring as claimed in claim 1, wherein the method comprises the following steps: the method for monitoring the thickness of the corrugated paper by the online thickness monitoring device comprises the following steps:

s1: taking corrugated paper, and obtaining a plurality of groups of paperboard thickness data on a sample paperboard through a thickness measuring device, wherein each group of paperboard thickness data respectively forms a paperboard thickness curve; wherein, each group of paperboard thickness data comprises a plurality of thickness values which are vertical to the conveying direction of the paperboard and correspond to unit points on the paperboard;

s2: calculating the average value of the thickness data of each group of paper boards to obtain the average thickness curve of each unit point of the paper boards along the conveying direction perpendicular to the paper boards; as a standard contrast curve;

s3: during normal production, a plurality of groups of paperboard thickness data are obtained on the paperboard of the same batch with the sample paperboard through a thickness measuring device; wherein the thickness data of each group of the paper boards comprises a plurality of thickness values which are vertical to the conveying direction of the paper boards and correspond to unit points on the paper boards; forming an actual thickness curve after sizing by using each group of paperboard thickness data;

s4: calculating the average value of each group of actual thickness curves; obtaining an actual average thickness curve of each unit point on the paperboard along the conveying direction vertical to the paperboard in actual production;

s5: comparing the actual average thickness curve with the standard contrast curve, and when the value of the actual average thickness curve exceeds the threshold value of the standard contrast curve; an alarm is issued.

4. The manufacturing method of the high-strength antibacterial corrugated paper based on the online monitoring as claimed in claim 3, wherein the manufacturing method comprises the following steps: the thickness measuring device comprises a first rotating thickness measuring unit, a second rotating thickness measuring unit, a third rotating thickness measuring unit and a fourth rotating thickness measuring unit; the first rotating thickness measuring unit, the second rotating thickness measuring unit, the third rotating thickness measuring unit and the fourth rotating thickness measuring unit are sequentially arranged along the paperboard conveying direction;

the measuring area of the first rotating thickness measuring unit is a first straight line to-be-measured area vertical to the conveying direction of the paper board; the measuring area of the second rotating thickness measuring unit is a second straight line to-be-measured area vertical to the conveying direction of the paper board; the measuring area of the third rotating thickness measuring unit is a third straight line to-be-measured area vertical to the paper board conveying direction; the measuring area of the fourth rotating thickness measuring unit is a fourth straight line to-be-measured area vertical to the paper board conveying direction; wherein; the first straight line waiting area, the second straight line waiting area, the third straight line waiting area and the fourth straight line waiting area are arranged at equal intervals from front to back along the paperboard transmission direction.

5. The manufacturing method of the high-strength antibacterial corrugated paper based on the online monitoring as claimed in claim 4, wherein the manufacturing method comprises the following steps: the first straight line area to be measured, the second straight line area to be measured, the third straight line area to be measured and the fourth straight line area to be measured all include at least 3 groups of straight line units to be measured.

6. The manufacturing method of the high-strength antibacterial corrugated paper based on the online monitoring as claimed in claim 4, wherein the manufacturing method comprises the following steps: the first rotation thickness measuring unit, the second rotation thickness measuring unit, the third rotation thickness measuring unit and the fourth rotation thickness measuring unit are consistent in structure; each comprises a measuring roller assembly and a supporting roller; the measuring roller assembly comprises a measuring roller body, and at least three groups of thickness measuring assemblies are arranged on the measuring roller body; the thickness measuring assembly comprises a fixed plate, two ends of the fixed plate are fixedly connected to two ends of the inner wall of the measuring roller body, a plurality of measuring thimbles are sequentially arranged on the fixed plate at equal intervals, and the measuring thimbles penetrate through the fixed plate and are connected with a reflecting plate at the top; the lower end part of the measuring thimble is connected with a connecting plate and also comprises an elastic piece, one end of the elastic piece is sleeved on the thimble and is abutted to the connecting plate, and the other end of the elastic piece is abutted to the bottom wall of the fixing plate; the measuring roller is characterized by further comprising a miniature laser transmitter, the miniature laser transmitter is fixed on the inner wall of the measuring roller body and is arranged on the same axis with the ejector pin, and a gyroscope sensor is arranged on the fixing plate.

7. The manufacturing method of the high-strength antibacterial corrugated paper based on the online monitoring as claimed in claim 6, wherein the manufacturing method comprises the following steps: the measuring roller body comprises three groups of thickness measuring components; and the three groups of thickness measuring assemblies are arranged at equal intervals.

8. The manufacturing method of the high-strength antibacterial corrugated paper based on the online monitoring as claimed in claim 3, wherein the manufacturing method comprises the following steps: a method of measuring thickness with a thickness measurement assembly, comprising the steps of:

a1: the micro laser transmitter transmits laser to the reflecting plate; obtaining an initial distance;

a2: the measuring roller body rotates, and when the gyroscope sensor detects that the measuring roller body is in a horizontal state; the micro laser transmitter emits laser again to the reflecting plate; obtaining a measurement distance;

a3: the thickness value of the paperboard is obtained by subtracting the measured distance from the initial distance.

9. The method for manufacturing the high-strength antibacterial corrugated paper based on the online monitoring as claimed in claim 1, wherein the method comprises the following steps: the first auxiliary supporting layer and the second auxiliary supporting layer have the same structure; the core layer antibacterial paper comprises a supporting layer paper body, wherein supporting bones are arranged on the supporting layer paper body at intervals, and when the waved core layer antibacterial paper is mutually bonded with a first auxiliary supporting layer and a second auxiliary supporting layer; the supporting ribs on the first auxiliary supporting layer and the second auxiliary supporting layer are positioned in the wave troughs of the antibacterial paper of the core layer on the opposite side.

10. The method for manufacturing the high-strength antibacterial corrugated paper based on the online monitoring as claimed in claim 9, wherein the method comprises the following steps: the support ribs are formed on the paper of the support layer in a zigzag manner by pressing, and the support ribs are abutted to the inner walls of the wave troughs.

Technical Field

The invention relates to the technical field of corrugated paper manufacturing, in particular to a manufacturing method of high-strength antibacterial corrugated paper based on-line monitoring.

Background

Corrugated paper is widely applied to paper product outer packaging at present, has the advantages of simple processing, light weight, high strength and hardness, easy storage and the like, is more and more popular with outer packaging enterprises, and is widely applied to containing, storing and transporting food or digital products in the market.

Corrugated paper board made of corrugated paper is generally provided with a plurality of layers in order to increase the shock resistance and the punching resistance, the corrugated paper is separated by core paper, and the plurality of layers of corrugated paper are formed by gluing. For corrugated boards used for storage and transportation of special articles, the number of layers of corrugated paper is usually increased to five layers, seven layers and other structures, obviously, as the thickness of the corrugated board is increased, the uniformity of the thickness of the corrugated board is difficult to control, and the uneven thickness causes difficulty in paper passing during subsequent surface printing; or difficult to locate and not print.

Secondly, performing a first step; corrugated paper for packaging food has higher performance requirement; including moisture resistance, antimicrobial properties, and the like; the existing corrugated paper does not consider the antibacterial performance because of factors such as cost and the like.

Disclosure of Invention

The invention aims to provide a method for manufacturing high-strength antibacterial corrugated paper based on online monitoring, which is used for solving the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the manufacturing method of the high-strength antibacterial corrugated paper based on-line monitoring comprises the following steps:

step 1: the core layer antibacterial paper is pressed into a wave shape through hot pressing;

step 2: taking a first auxiliary supporting layer and a second auxiliary supporting layer, and adhering the first auxiliary supporting layer and the second auxiliary supporting layer to the bottom surface and the top surface of the core layer antibacterial paper through an adhesive;

and step 3: taking a first surface paper layer and a second surface paper layer; the first surface paper layer is adhered to the top surface of the second auxiliary supporting layer through an adhesive; the second surface paper layer is adhered to the bottom surface of the first auxiliary supporting layer through an adhesive;

and 4, step 4: after the corrugated paper finished in the step 3 is subjected to rear end drying, thickness monitoring is carried out through an online thickness monitoring device;

and 5: and if the thickness of the corrugated paper is abnormal, giving an alarm.

Preferably, the method for manufacturing the core layer antibacterial paper comprises the following steps:

a1: and (2) mixing softwood pulp and hardwood pulp according to the mass ratio of 50-70: blending pulp according to the proportion of 30-50, wherein the beating degree of the pulp after beating is as follows: 60-80 DEG SR of softwood pulp and 20-40 DEG SR of hardwood pulp;

step 2: sizing the sizing agent by taking an internal sizing agent, wherein the internal sizing agent comprises the components of alkyl ketene dimer, carbon quantum dots, nano ZnO and nano CaCO₃；

And step 3: adding 0.1-0.5% of retention aid, dewatering in a net part, squeezing, drying in a front section, adding surface sizing agent PVA for surface sizing, wherein the sizing amount is 1-2g/m²And then the product is dried at the later stage and is calendered to form a finished product.

Preferably, the method for monitoring the thickness of the corrugated paper by using the online thickness monitoring device comprises the following steps:

s1: taking corrugated paper, and obtaining a plurality of groups of paperboard thickness data on a sample paperboard through a thickness measuring device, wherein each group of paperboard thickness data respectively forms a paperboard thickness curve; wherein, each group of paperboard thickness data comprises a plurality of thickness values which are vertical to the conveying direction of the paperboard and correspond to unit points on the paperboard;

s2: calculating the average value of the thickness data of each group of paper boards to obtain the average thickness curve of each unit point of the paper boards along the conveying direction perpendicular to the paper boards; as a standard contrast curve;

s3: during normal production, a plurality of groups of paperboard thickness data are obtained on the paperboard of the same batch with the sample paperboard through a thickness measuring device; wherein the thickness data of each group of the paper boards comprises a plurality of thickness values which are vertical to the conveying direction of the paper boards and correspond to unit points on the paper boards; forming an actual thickness curve after sizing by using each group of paperboard thickness data;

s4: calculating the average value of each group of actual thickness curves; obtaining an actual average thickness curve of each unit point on the paperboard along the conveying direction vertical to the paperboard in actual production;

s5: comparing the actual average thickness curve with the standard contrast curve, and when the value of the actual average thickness curve exceeds the threshold value of the standard contrast curve; an alarm is issued.

Preferably, the thickness measuring device includes a first rotation thickness measuring unit, a second rotation thickness measuring unit, a third rotation thickness measuring unit, and a fourth rotation thickness measuring unit; the first rotating thickness measuring unit, the second rotating thickness measuring unit, the third rotating thickness measuring unit and the fourth rotating thickness measuring unit are sequentially arranged along the paperboard conveying direction;

the measuring area of the first rotating thickness measuring unit is a first straight line to-be-measured area vertical to the conveying direction of the paper board; the measuring area of the second rotating thickness measuring unit is a second straight line to-be-measured area vertical to the conveying direction of the paper board; the measuring area of the third rotating thickness measuring unit is a third straight line to-be-measured area vertical to the paper board conveying direction; the measuring area of the fourth rotating thickness measuring unit is a fourth straight line to-be-measured area vertical to the paper board conveying direction; wherein; the first straight line waiting area, the second straight line waiting area, the third straight line waiting area and the fourth straight line waiting area are arranged at equal intervals from front to back along the paperboard transmission direction.

Preferably, the first straight line region to be measured, the second straight line region to be measured, the third straight line region to be measured and the fourth straight line region to be measured all include at least 3 groups of straight line units to be measured.

Preferably, the first rotation thickness measuring unit, the second rotation thickness measuring unit, the third rotation thickness measuring unit and the fourth rotation thickness measuring unit have the same structure; each comprises a measuring roller assembly and a supporting roller; the measuring roller assembly comprises a measuring roller body, and at least three groups of thickness measuring assemblies are arranged on the measuring roller body; the thickness measuring assembly comprises a fixed plate, two ends of the fixed plate are fixedly connected to two ends of the inner wall of the measuring roller body, a plurality of measuring thimbles are sequentially arranged on the fixed plate at equal intervals, and the measuring thimbles penetrate through the fixed plate and are connected with a reflecting plate at the top; the lower end part of the measuring thimble is connected with a connecting plate and also comprises an elastic piece, one end of the elastic piece is sleeved on the thimble and is abutted to the connecting plate, and the other end of the elastic piece is abutted to the bottom wall of the fixing plate; the measuring roller is characterized by further comprising a miniature laser transmitter, the miniature laser transmitter is fixed on the inner wall of the measuring roller body and is arranged on the same axis with the ejector pin, and a gyroscope sensor is arranged on the fixing plate.

Preferably, the measuring roller body comprises three groups of thickness measuring assemblies; and the three groups of thickness measuring assemblies are arranged at equal intervals.

Preferably, in the initial state, the distance from the end part of the thimble to the tangent of the measuring roller body is the same as the distance from the surface of the unsized paperboard to the tangent of the measuring roller body. The thickness of the sheet can thereby be detected.

Preferably, the thickness measuring assembly measures the thickness, and comprises the following steps:

a1: the micro laser transmitter transmits laser to the reflecting plate; obtaining an initial distance;

a2: the measuring roller body rotates, and when the gyroscope sensor detects that the measuring roller body is in a horizontal state; the micro laser transmitter emits laser again to the reflecting plate; obtaining a measurement distance;

a3: the thickness value of the paperboard is obtained by subtracting the measured distance from the initial distance.

Preferably, the first auxiliary support layer and the second auxiliary support layer have the same structure; the core layer antibacterial paper comprises a supporting layer paper body, wherein supporting bones are arranged on the supporting layer paper body at intervals, and when the waved core layer antibacterial paper is mutually bonded with a first auxiliary supporting layer and a second auxiliary supporting layer; the supporting ribs on the first auxiliary supporting layer and the second auxiliary supporting layer are positioned in the wave troughs of the antibacterial paper of the core layer on the opposite side.

Preferably, the support ribs are formed on the support layer paper in a zigzag shape by press forming.

Preferably, the supporting ribs abut against the inner walls of the valleys.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a manufacturing method of high-strength antibacterial corrugated paper based on-line monitoring, and core layer antibacterial paper is arranged in the corrugated paper on a paperboard; on one hand, the antibacterial function can be effectively achieved; on the other hand, the waterproof cloth also has certain moisture-proof function; secondly, monitoring the thickness by an online thickness monitoring device; the production performance of the paperboard can be effectively monitored in real time; the weight of the paperboard is effectively controlled.

Drawings

FIG. 1 is a schematic structural view of corrugated paper of the present invention;

FIG. 2 is a schematic view of an installation structure of the thickness measuring device of the present invention;

FIG. 3 is a schematic structural diagram of an actual thickness profile of the present invention;

FIG. 4 is a schematic view of the structure of the measurement region of the present invention;

FIG. 5 is a schematic structural view of a thickness measuring device according to the present invention;

fig. 6 is an enlarged schematic view of a in fig. 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-6, the present invention provides a technical solution:

the manufacturing method of the high-strength antibacterial corrugated paper based on-line monitoring comprises the following steps:

step 1: the core layer antibacterial paper is pressed into a wave shape through hot pressing;

step 2: taking a first auxiliary supporting layer and a second auxiliary supporting layer, and adhering the first auxiliary supporting layer and the second auxiliary supporting layer to the bottom surface and the top surface of the core layer antibacterial paper through an adhesive;

and step 3: taking a first surface paper layer and a second surface paper layer; the first surface paper layer is adhered to the top surface of the second auxiliary supporting layer through an adhesive; the second surface paper layer is adhered to the bottom surface of the first auxiliary supporting layer through an adhesive;

and 4, step 4: after the corrugated paper finished in the step 3 is subjected to rear end drying, thickness monitoring is carried out through an online thickness monitoring device;

and 5: and if the thickness of the corrugated paper is abnormal, giving an alarm.

The manufacturing method of the core layer antibacterial paper comprises the following steps:

a1: and (2) mixing softwood pulp and hardwood pulp according to the mass ratio of 50-70: blending pulp according to the proportion of 30-50, wherein the beating degree of the pulp after beating is as follows: 60-80 DEG SR of softwood pulp and 20-40 DEG SR of hardwood pulp;

step 2: sizing the sizing agent by taking an internal sizing agent, wherein the internal sizing agent comprises the components of alkyl ketene dimer, carbon quantum dots, nano ZnO and nano CaCO₃；

And step 3: adding 0.1-0.5% of retention aid, dewatering in a net part, squeezing, drying in a front section, adding surface sizing agent PVA for surface sizing, wherein the sizing amount is 1-2g/m²And then the product is dried at the later stage and is calendered to form a finished product.

The method for monitoring the thickness of the corrugated paper by the online thickness monitoring device comprises the following steps:

s1: taking corrugated paper, and obtaining a plurality of groups of paperboard thickness data on a sample paperboard through a thickness measuring device, wherein each group of paperboard thickness data respectively forms a paperboard thickness curve; wherein, each group of paperboard thickness data comprises a plurality of thickness values which are vertical to the conveying direction of the paperboard and correspond to unit points on the paperboard;

s2: calculating the average value of the thickness data of each group of paper boards to obtain the average thickness curve of each unit point of the paper boards along the conveying direction perpendicular to the paper boards; as a standard contrast curve;

s3: during normal production, a plurality of groups of paperboard thickness data are obtained on the paperboard of the same batch with the sample paperboard through a thickness measuring device; wherein the thickness data of each group of the paper boards comprises a plurality of thickness values which are vertical to the conveying direction of the paper boards and correspond to unit points on the paper boards; forming an actual thickness curve after sizing by using each group of paperboard thickness data;

s4: calculating the average value of each group of actual thickness curves; obtaining an actual average thickness curve of each unit point on the paperboard along the conveying direction vertical to the paperboard in actual production;

s5: comparing the actual average thickness curve with the standard contrast curve, and when the value of the actual average thickness curve exceeds the threshold value of the standard contrast curve; an alarm is issued.

The thickness measuring device comprises a first rotating thickness measuring unit 1, a second rotating thickness measuring unit 2, a third rotating thickness measuring unit 3 and a fourth rotating thickness measuring unit 4; the first rotating thickness measuring unit, the second rotating thickness measuring unit, the third rotating thickness measuring unit and the fourth rotating thickness measuring unit are sequentially arranged along the paperboard conveying direction;

the measuring area of the first rotating thickness measuring unit is a first straight line to-be-measured area 5 vertical to the conveying direction of the paper board; the measuring area of the second rotating thickness measuring unit is a second straight line to-be-measured area 6 vertical to the paper board conveying direction; the measuring area of the third rotating thickness measuring unit is a third straight line to-be-measured area 7 vertical to the paper board conveying direction; the measuring area of the fourth rotating thickness measuring unit is a fourth straight line to-be-measured area 8 vertical to the paper board conveying direction; wherein; the first straight line waiting area, the second straight line waiting area, the third straight line waiting area and the fourth straight line waiting area are arranged at equal intervals from front to back along the paperboard transmission direction, the first straight line waiting area, the second straight line waiting area, the third straight line waiting area and the fourth straight line waiting area respectively comprise at least 3 groups of straight line waiting units, and the structures of the first rotation thickness measuring unit, the second rotation thickness measuring unit, the third rotation thickness measuring unit and the fourth rotation thickness measuring unit are consistent; each comprises a measuring roller assembly 9 and a support roller 10; the measuring roller assembly comprises a measuring roller body 11, and at least three groups of thickness measuring assemblies are arranged on the measuring roller body; the thickness measuring assembly comprises a fixing plate 12, two ends of the fixing plate are fixedly connected to two ends of the inner wall of the measuring roller body, a plurality of measuring thimbles 13 are sequentially arranged on the fixing plate at equal intervals, and the measuring thimbles penetrate through the fixing plate and are connected with a reflecting plate 14 at the top; the lower end part of the measuring thimble is connected with a connecting plate 15 and further comprises an elastic piece 16, one end of the elastic piece is sleeved on the thimble and abuts against the connecting plate, and the other end of the elastic piece abuts against the bottom wall of the fixing plate; the measuring roller is characterized by further comprising a miniature laser transmitter 17, wherein the miniature laser transmitter is fixed on the inner wall of the measuring roller body and is arranged on the same axis with the thimble, a gyroscope sensor is arranged on the fixing plate, and the measuring roller body comprises three groups of thickness measuring assemblies; and the three groups of thickness measuring assemblies are arranged at equal intervals.

In the initial state, the distance from the end part of the thimble to the tangent of the measuring roller body is the same as the distance from the surface of the paperboard without glue to the tangent of the measuring roller body. The thickness of the sheet can thereby be detected.

A method of measuring thickness with a thickness measurement assembly, comprising the steps of:

a1: the micro laser transmitter transmits laser to the reflecting plate; obtaining an initial distance;

a2: the measuring roller body rotates, and when the gyroscope sensor detects that the measuring roller body is in a horizontal state; the micro laser transmitter emits laser again to the reflecting plate; obtaining a measurement distance;

a3: the thickness value of the paperboard is obtained by subtracting the measured distance from the initial distance.

The first auxiliary support layer 18 and the second auxiliary support layer 19 are identical in structure; the core antibacterial paper comprises a supporting layer paper body, wherein supporting ribs 20 are arranged on the supporting layer paper body at intervals, and when the waved core antibacterial paper is mutually bonded with a first auxiliary supporting layer and a second auxiliary supporting layer; the supporting ribs on the first auxiliary supporting layer and the second auxiliary supporting layer are located in the wave troughs of the antibacterial paper 22 on the opposite side core layer, the supporting ribs which are in a sawtooth shape are formed on the supporting layer paper through pressing, and the supporting ribs are abutted to the inner walls of the wave troughs.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.