CN110561840B

Movatterモバイル変換

Info

Publication number: CN110561840B
Application number: CN201910767106.7A
Authority: CN
Inventors: 李慧敏; 李伟琪; 韩宇
Original assignee: Mudanjiang Hengfeng Paper Co Ltd
Current assignee: Mudanjiang Hengfeng Paper Co Ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2021-03-16
Anticipated expiration: 2039-08-20
Also published as: CN110561840A

Abstract

Translated fromChinese

本发明提供一种纸质嘴棒原纸的制备工艺，包括以下步骤：（1）将纤维原料分成两组，分别进行打浆处理；（2）打浆处理完毕后，在两组浆中分别加入聚氧化乙烯和消泡剂，进行上网处理；（3）将上网处理后的两组浆分别进行压榨脱水处理至含水量为65~75%，得到两组半干湿纸页；（4）将其中一组半干湿纸页进一步干燥卷取得到干纸页，将另一组半干湿纸页加附功能性助剂，然后和所述干纸页一起干燥复合起皱，并卷取后既得双层纸质结构的纸质嘴棒原纸，并且所述双层纸质结构之间夹附有功能性助剂层。本发明通过在半干湿纸页中添加功能性物质，然后与另一组干纸页复合得到二层原纸，使纸质嘴棒原纸具备特殊性能。The invention provides a process for preparing a paper nozzle base paper, which includes the following steps: (1) dividing the fiber raw materials into two groups, and performing beating treatment respectively; (2) after the beating treatment is completed, adding polyoxygenated pulp to the two groups of pulps respectively ethylene and defoaming agent, and carry out on-line treatment; (3) Press and dehydrate the two groups of pulps after the on-line treatment to a moisture content of 65-75%, to obtain two sets of semi-dry and wet paper sheets; (4) One of the The group of semi-dry and wet paper sheets are further dried and rolled to obtain dry paper sheets, the other group of semi-dry and wet paper sheets are added with functional additives, and then dried together with the dry and wet A paper nozzle stick base paper with a layered paper structure, and a functional auxiliary agent layer is sandwiched between the two-layer paper structure. In the present invention, the functional substance is added to the semi-dry and wet paper sheets, and then compounded with another group of dry paper sheets to obtain two-layer base paper, so that the paper nozzle stick base paper has special properties.

Description

Preparation process of paper filter tip body paper

Technical Field

The invention belongs to the technical field of raw paper preparation, and particularly relates to a preparation process of raw paper for a paper filter tip.

Background

The paper base paper for the filter tip is made of natural materials and biodegradable filter tip materials; the filter tip has the advantages of good filtering performance, quick biodegradability and low price, but the paper filter tip also has the problems of heat collapse, dry smoke and high phenol delivery amount in the cigarette smoking process.

In order to solve the problems of mouth heat sensation, dryness and high phenol delivery amount of the paper filter tip, the filter material factory improves the defects of the paper filter tip by adding functional auxiliary agents, such as: CN1102352575A discloses a filter stick paper added with adsorptive filling materials, a paper filter stick and a preparation method thereof. The method adds functional substances into the pulp, and has the problems of low substance retention rate, pollution to a production system and long time for replacing the next variety. CN204217887U discloses a two-layer base paper filter stick for cigarette. The method has the advantages of limited production specification, no fiber bonding force between two layers of paper, high subsequent processing requirement, corrugation pressing by using separate equipment and high cost. In addition, related workers develop other preparation processes of paper mouth stick base paper, but all the processes still have the defects of low additive retention, difficult processing, large equipment investment, high cost, no bonding force between two layers of paper, pollution of a production system and the like. Therefore, there is a need to further develop a process for preparing paper base for a paper filter rod to solve the above problems.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a preparation process of paper base paper for a paper filter tip.

The technical scheme of the invention is as follows:

in a first aspect, the invention provides a preparation process of paper base paper for a paper filter tip, which comprises the following steps:

(1) dividing the fiber raw materials into two groups, and respectively carrying out pulping treatment;

(2) after the pulping treatment is finished, adding polyoxyethylene and a defoaming agent into the two groups of pulps respectively to carry out net surfing treatment;

(3) carrying out squeezing dehydration treatment on the two groups of pulp subjected to the net surfing treatment respectively until the water content is 65-75%, and obtaining two groups of semi-dry wet paper sheets;

(4) and further drying and coiling one group of semi-dry and wet paper sheets to obtain dry paper sheets, adding a functional additive to the other group of semi-dry and wet paper sheets, then drying and compounding with the dry paper sheets for wrinkling, and coiling to obtain the paper mouth stick base paper with a double-layer paper structure, wherein a functional additive layer is sandwiched between the double-layer paper structures.

Further, the fiber raw material is selected from at least one of softwood pulp, hemp pulp, flash dried pulp, fluff pulp and chemical fiber.

Furthermore, the addition amount of the polyoxyethylene is 0.1-0.85% of the absolute dry pulp amount.

Further, the control parameters of the internet access processing are as follows: the net speed is 25-195 m/mim, the concentration of the pulp on the net is 0.02-0.20%, and the water content of the paper sheet outlet part is 80-90%.

Further, the control parameters of the press dehydration treatment are as follows: the pressing pressure is 0.1-0.9 Mpa, and the vacuum of the pressing roll is 0.05-0.9 Mpa.

Further, the functional auxiliary agent comprises: substances with adsorption function, substances for increasing fragrance, and substances for increasing strength; wherein the substance having an adsorption function comprises: carbon powder, wheat germ powder, corn germ powder, coarse bran and bamboo charcoal fiber; fragrance enhancing materials include: lemon powder, mint powder and tea; the strength-increasing substances include: PVA water-soluble fiber, biological cellulose and natural color coniferous fiber; the addition amount of the functional auxiliary agent is 0-60% of the oven-dried paper amount.

Further, the drying cylinder temperature for drying and compounding is 70-130, and the contact roller pressure of the drying cylinder at the temperature of 0-0.8 Mpa.

Further, the preparation process also comprises the step of reusing the white water obtained in the wire-entering treatment process in the pulping treatment process.

In a second aspect, the invention provides a paper base paper for a paper filter tip, which is prepared by adopting the method.

Further, the basis weight of the paper filter tip body paper is 25-100 g/m²Tightness degree is less than or equal to 0.45g/cm³The tensile strength is more than or equal to 0.15kN/m, and the water content is 4-8%.

The invention has the beneficial effects that: according to the invention, the functional substance is added into the semi-dry wet paper pages, and then the semi-dry wet paper pages are compounded with the other group of dry paper pages to obtain the two-layer base paper, so that the base paper of the paper filter tip has special performance. The addition amount of the functional substance can reach 60 percent, and the binding force between two layers of base paper and various performances of the base paper are not influenced. In addition, the white water produced in the production process can be recycled to the white water tank, and the white water after being used for pulping, pulp washing and treatment can also be used for dissolving an auxiliary agent, so that the cost is reduced, and the resource loss is reduced.

Detailed Description

In the description of the present invention, it is to be noted that those whose specific conditions are not specified in the examples are carried out according to the conventional conditions or the conditions recommended by the manufacturers. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.

Example 1:

the embodiment provides a preparation process of paper filter tip base paper, which comprises the following steps:

(1) dividing the fiber raw materials into two groups, and respectively carrying out pulping treatment, wherein the beating degree is 15-25 degrees SR, and the weight percentage of the fiber raw materials is as follows: bleaching softwood pulp: 50%, flash dried pulp: 50 percent.

(2) After the pulping treatment is finished, adding polyoxyethylene and a defoaming agent into the two groups of pulps respectively to carry out net surfing treatment; wherein the addition amount of the polyoxyethylene is 0.1-0.8% (absolute dry pulp amount), the addition amount of the defoaming agent is 0.02-0.2% (absolute dry pulp amount), the net speed is 170-180 m/min, the concentration of the upper pulp is 0.15%, and the water content of the paper sheet outlet part is 80-82%.

(3) And (3) respectively carrying out squeezing dehydration treatment on the two groups of pulp subjected to the internet surfing treatment until the water content is 65-68%, and controlling parameters as follows: and pressing pressure is 0.3-0.4 Mpa, and the vacuum of a pressing roller is 0.2-0.4 Mpa, so that two groups of semi-dry wet paper sheets are obtained.

(4) And further drying and reeling one group of semi-dry and wet paper sheets to obtain dry paper sheets, wherein the drying temperature is 95-100 ℃, the moisture content of the dry paper sheets is 4-8%, the other group of semi-dry and wet paper sheets are dried in a drying cylinder, carbon powder is added on the surface of the paper web through a particle spreader device, the addition amount of the carbon powder is 20% of the absolute dry paper amount, the paper sheets are dried, compounded and wrinkled together with the dry paper sheets, the drying temperature of the drying cylinder is 95-100, the contact roller pressure of a drying cylinder at the temperature of 0.6-0.8 MPa, the paper mouth stick body paper with a double-layer paper structure is obtained after reeling, and a functional auxiliary agent layer is sandwiched between the double-layer paper structures.

(5) Collecting the white water after the net surfing treatment in a white water tank, and recycling the white water in the processes of pulping, dissolving an auxiliary agent and the like.

Example 2:

(1) dividing the fiber raw materials into two groups, and respectively carrying out pulping treatment, wherein the beating degree is 15-25 degrees SR, and the weight percentage of the fiber raw materials is as follows: unbleached softwood pulp: 40%, flash dried pulp: 60 percent.

(2) After the pulping treatment is finished, adding polyoxyethylene and a defoaming agent into the two groups of pulps respectively to carry out net surfing treatment; wherein the addition amount of the polyoxyethylene is 0.45-0.55% (absolute dry pulp amount), the addition amount of the defoaming agent is 0.02-0.2% (absolute dry pulp amount), the net speed is 142-150 m/min, the net-feeding concentration of the pulp is 0.10%, and the water content of the paper sheet net-discharging part is 80-83%.

(3) And (3) respectively carrying out squeezing dehydration treatment on the two groups of pulp subjected to the internet surfing treatment until the water content is 65-68%, and controlling parameters as follows: and pressing pressure is 0.3-0.4 Mpa, and the vacuum of a pressing roller is 0.4-0.5 Mpa, so that two groups of semi-dry wet paper sheets are obtained.

(4) And further drying and reeling one group of semi-dry and wet paper sheets to obtain dry paper sheets, wherein the drying temperature is 95-100 ℃, the moisture content of the dry paper sheets is 4-8%, the other group of semi-dry and wet paper sheets are dried in a drying cylinder, wheat germ powder is added on the surface of the paper web through a particle spreader device, the addition amount of the wheat germ powder is 30% of the absolute dry paper amount, then the wheat germ powder and the dry paper sheets are dried, compounded and wrinkled, the drying temperature of the drying cylinder is 100-102 ℃, the temperature is controlled, the paper mouth stick base paper with a double-layer paper structure is obtained after reeling, and a functional auxiliary agent layer is sandwiched between the double-layer paper structures.

Example 3:

(1) dividing the fiber raw materials into two groups, and respectively carrying out pulping treatment, wherein the beating degree is 15-25 degrees SR, and the weight percentage of the fiber raw materials is as follows: pulping the hemp: 30%, flash dried pulp: 70 percent.

(2) After the pulping treatment is finished, adding polyoxyethylene and a defoaming agent into the two groups of pulps respectively to carry out net surfing treatment; wherein the addition amount of the polyoxyethylene is 0.35-0.45% (absolute dry pulp amount), the addition amount of the defoaming agent is 0.02-0.2% (absolute dry pulp amount), the net speed is 115-120 m/min, the net-feeding concentration of the pulp is 0.10%, and the water content of the paper sheet net-discharging part is 82-85%.

(3) And (3) respectively carrying out squeezing dehydration treatment on the two groups of pulp subjected to the internet surfing treatment until the water content is 65-70%, and controlling parameters as follows: and pressing pressure is 0.3-0.4 Mpa, and the vacuum of a pressing roller is 0.4-0.5 Mpa, so that two groups of semi-dry wet paper sheets are obtained.

(4) And further drying and reeling one group of semi-dry and wet paper sheets to obtain dry paper sheets, wherein the drying temperature is 95-100 ℃, the moisture content of the dry paper sheets is 4-8%, the other group of semi-dry and wet paper sheets are dried in a drying cylinder, corn germ powder is added on the surface of the paper web through a particle spreader, the addition amount of the wheat germ powder is 25% of the absolute dry paper amount, then the paper sheets are dried, compounded and wrinkled together with the dry paper sheets, the drying temperature of the drying cylinder is 75-80 ℃, the pressure of a contact roller of the drying cylinder is 0.5-0.6 MPa, the paper mouth stick body paper with a double-layer paper structure is obtained after reeling, and a functional auxiliary agent layer is sandwiched between the double-layer paper structures.

Example 4:

(1) dividing the fiber raw materials into two groups, and respectively carrying out pulping treatment, wherein the beating degree is 15-25 degrees SR, and the weight percentage of the fiber raw materials is as follows: pulping the hemp: 20%, fluff pulp: 75% and 5% of chemical fiber.

(2) After the pulping treatment is finished, adding polyoxyethylene and a defoaming agent into the two groups of pulps respectively to carry out net surfing treatment; wherein the addition amount of the polyoxyethylene is 0.35-0.45% (absolute dry pulp amount), the addition amount of the defoaming agent is 0.02-0.2% (absolute dry pulp amount), the net speed is 93-97 m/min, the net-feeding concentration of the pulp is 0.08%, and the water content of the paper sheet net-discharging part is 85-90%.

(3) And (3) respectively carrying out squeezing dehydration treatment on the two groups of pulp subjected to the internet surfing treatment until the water content is 70-75%, and controlling parameters as follows: and pressing pressure is 0.3-0.4 Mpa, and the vacuum of a pressing roller is 0.3-0.4 Mpa, so that two groups of semi-dry wet paper sheets are obtained.

(4) And further drying and reeling one group of semi-dry and wet paper sheets to obtain dry paper sheets, wherein the drying temperature is 95-100 ℃, the moisture content of the dry paper sheets is 4-8%, the other group of semi-dry and wet paper sheets are dried in a drying cylinder, coarse bran is added on the surface of the paper web through a particle spreader, the addition amount of the coarse bran is 35% of the absolute dry paper amount, the paper sheets are dried, compounded and wrinkled together, the drying temperature of the drying cylinder is 88-90, the contact roller pressure of a drying cylinder at the temperature of 0.5-0.6 MPa, the paper mouth stick body paper with a double-layer paper structure is obtained after reeling, and a functional auxiliary agent layer is sandwiched between the double-layer paper structures.

Example 5:

(1) dividing the fiber raw materials into two groups, and respectively carrying out pulping treatment, wherein the beating degree is 15-25 degrees SR, and the weight percentage of the fiber raw materials is as follows: bleaching softwood pulp: 25%, fluff pulp: 70% and 5% of chemical fiber.

(2) After the pulping treatment is finished, adding polyoxyethylene and a defoaming agent into the two groups of pulps respectively to carry out net surfing treatment; wherein the addition amount of the polyoxyethylene is 0.75-0.85% (absolute dry pulp amount), the addition amount of the defoaming agent is 0.02-0.2% (absolute dry pulp amount), the net speed is 190-195 m/min, the net-feeding concentration of the pulp is 0.10%, and the water content of the paper sheet net-discharging part is 80-85%.

(3) And (3) respectively carrying out squeezing dehydration treatment on the two groups of pulp subjected to the internet surfing treatment until the water content is 68-70%, wherein the control parameters are as follows: and pressing pressure is 0.3-0.4 Mpa, and the vacuum of a pressing roller is 0.3-0.4 Mpa, so that two groups of semi-dry wet paper sheets are obtained.

(4) And further drying and reeling one group of semi-dry and wet paper sheets to obtain dry paper sheets, wherein the drying temperature is 95-100 ℃, the moisture content of the dry paper sheets is 4-8%, the other group of semi-dry and wet paper sheets are dried in a drying cylinder, lemon powder is added on the surface of the paper sheet through a particle spreader, the addition amount of the lemon powder is 40% of the absolute dry paper amount, then the lemon powder and the dry paper sheets are dried, compounded and wrinkled, the drying temperature of the drying cylinder is 80-85%, the paper mouth stick body paper with a double-layer paper structure is obtained after being reeled at the temperature of DEG C, and a functional auxiliary agent layer is sandwiched between the double-layer paper structures.

Example 6:

(1) dividing the fiber raw materials into two groups, and respectively carrying out pulping treatment, wherein the beating degree is 15-25 degrees SR, and the weight percentage of the fiber raw materials is as follows: unbleached softwood pulp: 30%, fluff pulp: 65% and 5% of chemical fiber.

(2) After the pulping treatment is finished, adding polyoxyethylene and a defoaming agent into the two groups of pulps respectively to carry out net surfing treatment; wherein the addition amount of the polyoxyethylene is 0.55-0.65% (absolute dry pulp amount), the addition amount of the defoaming agent is 0.02-0.2% (absolute dry pulp amount), the net speed is 143-145 m/min, the net-feeding concentration of the pulp is 0.08%, and the water content of the paper sheet net-discharging part is 80%.

(3) And (3) respectively carrying out squeezing dehydration treatment on the two groups of pulp subjected to the internet surfing treatment until the water content is 68-72%, and controlling parameters as follows: and pressing pressure is 0.2-0.3 Mpa, and the vacuum of a pressing roller is 0.3-0.4 Mpa, so that two groups of semi-dry wet paper sheets are obtained.

(4) And further drying and reeling one group of semi-dry and wet paper sheets to obtain dry paper sheets, wherein the drying temperature is 95-100 ℃, the moisture content of the dry paper sheets is 4-8%, the other group of semi-dry and wet paper sheets are dried in a drying cylinder, mint powder is added to the surface of the paper sheet through a particle spreader, the addition amount of the mint powder is 38% of the absolute dry paper amount, the mint powder and the dry paper sheets are dried, compounded and wrinkled, the drying temperature of the drying cylinder is 80-85 ℃, the paper mouth stick body paper with a double-layer paper structure is obtained after being reeled at the temperature of DEG C, and a functional auxiliary agent layer is sandwiched between the double-layer paper structures.

Example 7:

(1) dividing the fiber raw materials into two groups, and respectively carrying out pulping treatment, wherein the beating degree is 15-25 degrees SR, and the weight percentage of the fiber raw materials is as follows: bleaching softwood pulp: 20%, fluff pulp: 77% and 3% of chemical fiber.

(2) After the pulping treatment is finished, adding polyoxyethylene and a defoaming agent into the two groups of pulps respectively to carry out net surfing treatment; wherein the addition amount of the polyoxyethylene is 0.55-0.65% (absolute dry pulp amount), the addition amount of the defoaming agent is 0.02-0.2% (absolute dry pulp amount), the net speed is 105-110 m/min, the net-feeding concentration of the pulp is 0.07%, and the water content of the paper sheet net-discharging part is 75-80%.

(4) And further drying and reeling one group of semi-dry and wet paper sheets to obtain dry paper sheets, wherein the drying temperature is 95-100 ℃, the moisture content of the dry paper sheets is 4-8%, the other group of semi-dry and wet paper sheets are added with tea leaves on the surface of the paper sheets through an airflow spreader before being dried in a drying cylinder, the adding amount of the tea leaves is 15% of the absolute dry paper amount, then the tea leaves and the dry paper sheets are dried, compounded and wrinkled, the drying temperature of the drying cylinder is 95-100 ℃, the paper mouth stick body paper with a double-layer paper structure is obtained after being reeled at the temperature of DEG C, and a functional auxiliary agent layer is sandwiched between the double-layer.

Example 8:

(1) dividing the fiber raw materials into two groups, and respectively carrying out pulping treatment, wherein the beating degree is 15-25 degrees SR, and the weight percentage of the fiber raw materials is as follows: bleaching softwood pulp: 40%, fluff pulp: 20% and 40% of chemical fiber.

(2) After the pulping treatment is finished, adding polyoxyethylene and a defoaming agent into the two groups of pulps respectively to carry out net surfing treatment; wherein the addition amount of the polyoxyethylene is 0.55-0.65% (absolute dry pulp amount), the addition amount of the defoaming agent is 0.02-0.2% (absolute dry pulp amount), the net speed is 185-190 m/min, the net-feeding concentration of the pulp is 0.06%, and the water content of the paper sheet net-discharging part is 72-77%.

(3) And (3) respectively carrying out squeezing dehydration treatment on the two groups of pulp subjected to the internet surfing treatment until the water content is 65-70%, and controlling parameters as follows: and pressing pressure is 0.2-0.3 Mpa, and the vacuum of a pressing roller is 0.3-0.4 Mpa, so that two groups of semi-dry wet paper sheets are obtained.

(4) And further drying and reeling one group of semi-dry and wet paper sheets to obtain dry paper sheets, wherein the drying temperature is 95-100 ℃, the moisture content of the dry paper sheets is 4-8%, the other group of semi-dry and wet paper sheets are added with bamboo charcoal fibers on the surface of the paper web through an airflow spreader before entering a drying cylinder for drying, the adding amount of the bamboo charcoal fibers is 50% of the absolute dry paper amount, then the paper sheets are dried, compounded and wrinkled together, the drying temperature of the drying cylinder is 95-100 ℃, the paper mouth stick body paper with a double-layer paper structure is obtained after being reeled at the temperature of DEG C, and a functional auxiliary agent layer is sandwiched between the double-layer paper structures.

Example 9:

(1) dividing the fiber raw materials into two groups, and respectively carrying out pulping treatment, wherein the beating degree is 15-25 degrees SR, and the weight percentage of the fiber raw materials is as follows: fluff pulp: 80% and 20% of chemical fiber.

(2) After the pulping treatment is finished, adding polyoxyethylene and a defoaming agent into the two groups of pulps respectively to carry out net surfing treatment; wherein the addition amount of the polyoxyethylene is 0.55-0.65% (absolute dry pulp amount), the addition amount of the defoaming agent is 0.02-0.2% (absolute dry pulp amount), the net speed is 185-190 m/min, the online concentration of the pulp is 0.16%, and the water content of the paper sheet outlet part is 72-77%.

(4) And further drying and reeling one group of semi-dry and wet paper sheets to obtain dry paper sheets, wherein the drying temperature is 95-100 ℃, the moisture content of the dry paper sheets is 4-8%, the other group of semi-dry and wet paper sheets are dried in a drying cylinder, and then, a P VA water-soluble fiber is added on the surface of the paper web through an airflow spreader device, the addition amount of the PVA water-soluble fiber is 5% of the absolute dry paper amount, the paper sheets are dried, compounded and wrinkled together, wherein the drying temperature of the drying cylinder is 100-105 ℃, the paper mouth stick base paper with a double-layer paper structure is obtained after being reeled at the temperature of DEG C, and a functional auxiliary agent layer is sandwiched between the double.

Example 10:

(1) dividing the fiber raw materials into two groups, and respectively carrying out pulping treatment, wherein the beating degree is 15-25 degrees SR, and the weight percentage of the fiber raw materials is as follows: unbleached softwood pulp: 40%, fluff pulp: 60%,.

(2) After the pulping treatment is finished, adding polyoxyethylene and a defoaming agent into the two groups of pulps respectively to carry out net surfing treatment; wherein the addition amount of the polyoxyethylene is 0.45-0.55% (absolute dry pulp amount), the addition amount of the defoaming agent is 0.02-0.2% (absolute dry pulp amount), the net speed is 95-100 m/min, the net-feeding concentration of the pulp is 0.05%, and the water content of the paper sheet net-discharging part is 75-80%.

(4) And further drying and reeling one group of semi-dry and wet paper sheets to obtain dry paper sheets, wherein the drying temperature is 95-100 ℃, the moisture content of the dry paper sheets is 4-8%, the other group of semi-dry and wet paper sheets are added with the biological cellulose on the surface of the paper web through a particle spreader before being dried in a drying cylinder, the addition amount of the biological cellulose is 60% of the absolute dry paper amount, then the biological cellulose and the dry paper sheets are dried, compounded and wrinkled, wherein the drying temperature of the drying cylinder is 100-105 ℃, the paper mouth stick base paper with a double-layer paper structure is obtained after being reeled at the temperature of DEG C, and a functional auxiliary agent layer is sandwiched between the double-layer paper structures.

Example 11:

(1) dividing the fiber raw materials into two groups, and respectively carrying out pulping treatment, wherein the beating degree is 15-25 degrees SR, and the weight percentage of the fiber raw materials is as follows: bleaching softwood pulp: 50%, flash dried pulp: 50%,.

(4) And further drying and reeling one group of semi-dry and wet paper sheets to obtain dry paper sheets, wherein the drying temperature is 95-100 ℃, the moisture content of the dry paper sheets is 4-8%, the other group of semi-dry and wet paper sheets are dried in a drying cylinder, natural color needle-leaved fibers are added on the surface of the paper web through an airflow spreader device, the addition amount of the natural color needle-leaved fibers is 50% of the absolute dry paper amount, then the paper sheets are dried, compounded and wrinkled together with the dry paper sheets, the drying temperature of the drying cylinder is 105-108, the paper mouth stick body paper with a double-layer paper structure is obtained after being reeled at the temperature of DEG C, and a functional auxiliary agent layer is sandwiched between the.

Example 12:

each item was examined for the 11 examples described above

1) And (5) detecting the technical indexes as shown in table 1.

Table 1 technical index test results

2) The total number of colonies was measured as shown in Table 2.

TABLE 2 Total colony count test results

Note: the test method is referred to GB 4789.2-2016.

3) Heavy metals and volatile species were detected as shown in table 3.

TABLE 3 heavy metal and volatile substance assay results

Detection ofItem

Unit of

Practice ofExample 1

Practice ofExample 2

Practice ofExample 3

Practice ofExample 4

Practice ofExample 5

Practice ofExample 6

Practice ofExample 7

Practice ofExample 8

Practice ofExample 9

Practice ofExample 10

Practice ofExample 11

Arsenic (As)

mg/kg

0.10

Not testedGo out

0.04

Not testedGo out

0.10

0.08

Not testedGo out

0.07

Not testedGo out

0.10

Lead (II)

mg/kg

0.08

Not testedGo out

0.06

0.05

0.07

0.08

0.07

0.06

0.08

0.05

Cadmium (Cd)

mg/kg

Not testedGo out

Chromium (III)

mg/kg

0.46

0.21

0.48

0.32

0.46

0.40

0.26

0.36

0.16

0.25

0.38

Nickel (II)

mg/kg

0.39

0.28

0.58

0.36

0.37

0.29

0.30

0.40

0.49

0.38

0.30

Mercury

mg/kg

Not testedGo out

Benzene and its derivatives

mg/m²

Not testedGo out

Toluene

mg/m²

Not testedGo out

Ethylbenzene production

mg/m²

Not testedGo out

Acetic acidN-butylEsters

mg/m²

Not testedGo out

Two-agentBenzene and its derivatives

mg/m²

Not testedGo out

Note: the heavy metal test method refers to YC/T316-2014; volatile material testing methods were referenced YC/T207-.

4) Chloroform extract detection, test method: reference is made to US FDA 21 CFR 176.170, as shown in table 4.

TABLE 4 chloroform extract test results

5) The fluorescent substance, formaldehyde, total migration and potassium permanganate consumption were measured as shown in table 5.

TABLE 5 results of detection of fluorescent substances, formaldehyde, total migration and potassium permanganate consumption

Note: reference to GB 31604.47-2016 for fluorescent substance test methods; according to the formaldehyde test method, GB 31604.48-2016 is referred, the limit value is '1.0', the report limit is '0.06', and ND is 'undetected'; the method for measuring the total migration amount is described in table 6 with reference to GB 31604.8-2016; the method for testing the potassium permanganate consumption is as shown in table 7 with reference to GB 4806.8-2016.

TABLE 6 Total migration test method

TABLE 7 potassium permanganate consumption testing method

Simulated liquid	Time	Temperature of	Limit value	Reporting limits
					Distilled water	2.0hr(s)	60℃	40	1.0

6) The test method of the acute oral toxicity test refers to the test method of the acute oral toxicity of GB/T21603-.

The test system comprises: ICR mice, SPF grade;

100 males, 20-23 g; 100 females, 20-24 g (10 females/males used in each example).

Breeding unit: beijing Huafukang Biotechnology GmbH (SCXK (Jing) 2014-.

Animal certification number: 11401300089815.

a breeding environment: the temperature is 21.2-24.4, and the average daily temperature difference is less than or equal to 3.2 ℃; the relative humidity is 36.7-61.9%.

The types of the feed are as follows: cobalt⁶⁰Radiation sterilization rat complete pellet feed.

The feed source is as follows: beijing Huafukang Biotechnology GmbH (SCXK (Jing) 2014-.

Certificate number: 1103221800001799.

the test method comprises the following steps:

sample preparation: soaking in pure water at 60 deg.C for 2 hr. The ratio of the surface area of the leaching medium to the surface area of the test object is 1cm²The area was immersed in 2mL of the immersion solution. The extraction stock solution is used as a sample and pure water is used as a solvent to prepare a sample solution with the concentration of 250 mg/mL. The test sample is placed at normal temperature in the sample feeding process, and the sample feeding process does not exceed half a day.

And (3) experimental design:

using the limit test method, 20 ICR mice were used per sample, each half of which was female and male, and a 5000mg/kg · bw dose group was set. Animals were given test samples by oral gavage after overnight fasting, closely observed for 4 hours, and observed for toxicity performance in mice 14 days after sample administration. CO for surviving animals at the end of the experiment₂Sacrifice, and gross anatomy and visual observation of pathological changes of tissues and organs.

Sample administration route and method: a syringe with a gavage needle is used for oral gavage sample feeding (0.2mL/10g · bw), and the sample feeding time is in the morning.

And (3) clinical observation: the observation was performed 1 time a day for 14 days.

And (3) measuring the body weight: the observation period was measured 1 time per week.

And (3) pathological examination: all test animals were subjected to gross necropsy.

And (3) test results:

clinical signs: after administration, both males and females were observed to have significant signs of toxicity associated with administration, and no mortality occurred during the observation period.

A change in body weight; the body weights of the animals in each group were not significantly abnormal on day 0, 7 and 14 of infection. Gross pathology examination results: at the end of the observation period of 14 days, the surviving animals were generally not significantly abnormal by necropsy.

And (4) test conclusion:

examples 1-10 Total 10 samples, ICR mice were gavaged at a dose of 5000mg/kg body weight under the conditions of this experimentThe test sample paper mouth stick raw paper and male and female rats have no death and no obvious toxicity. The test substance is used for acute oral administration of half Lethal Dose (LD) of ICR mice₅₀) Both female and male>5000mg/kg body weight.

In conclusion, the invention adds functional substances into the semi-dry wet paper pages, and then the semi-dry wet paper pages are compounded with the other group of dry paper pages to obtain the double-layer base paper, so that the base paper of the paper filter tip has special properties, such as enhanced adsorbability, aromaticity and increased strength. The addition amount of the functional substance can reach 60 percent, and the binding force between two layers of base paper and various performances of the base paper are not influenced.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A preparation process of paper base paper for a paper filter tip is characterized by comprising the following steps:

2. The process of claim 1, wherein the fiber material is selected from at least one of softwood pulp, hemp pulp, flash dried pulp, fluff pulp, and chemical fiber.

3. The preparation process of the paper base paper for the paper filter tip as claimed in claim 1, wherein the addition amount of the polyethylene oxide is 0.1-0.85% of the absolute dry pulp amount.

4. The preparation process of paper filter tip base paper as claimed in claim 1, wherein the control parameters of the net surfing treatment are as follows: the net speed is 25-195 m/mim, the concentration of the pulp on the net is 0.02-0.20%, and the water content of the paper sheet outlet part is 80-90%.

5. The process for preparing paper filter tip base paper as claimed in claim 1, wherein the control parameters of the press dehydration treatment are as follows: the pressing pressure is 0.1-0.9 Mpa, and the vacuum of the pressing roll is 0.05-0.9 Mpa.

6. The process for preparing paper filter tip base paper as claimed in claim 1, wherein the functional auxiliary agent comprises: substances with adsorption function, substances for increasing fragrance, and substances for increasing strength; wherein the substance having an adsorption function comprises: carbon powder, wheat germ powder, corn germ powder, coarse bran and bamboo charcoal fiber; fragrance enhancing materials include: lemon powder, mint powder and tea; the strength-increasing substances include: PVA water-soluble fiber, biological cellulose and natural color coniferous fiber.

7. The preparation process of the paper filter tip body paper as claimed in claim 1, wherein the drying temperature of the drying cylinder for drying and compounding is 70-130 ℃, and the pressure of a drying cylinder contact roller is 0-0.8 Mpa.

8. The preparation process of the paper-based filter tip body paper as claimed in any one of claims 1 to 7, wherein the preparation process further comprises the step of recycling white water obtained in the wire-entering treatment process to the pulping treatment process.

9. A paper base paper for a paper filter tip is characterized by being prepared by the preparation process of any one of claims 1 to 8.

10. The paper mouth stick base paper as claimed in claim 9, wherein the basis weight of the paper mouth stick base paper is 25-100 g/m²Tightness degree is less than or equal to 0.45g/cm³The tensile strength is more than or equal to 0.15kN/m, and the water content is 4-8%.