阅读说明：本技术 一种瓦楞纸板专用胶合剂的制备方法 (Preparation method of adhesive special for corrugated board ) 是由 黄展才 于 2019-11-13 设计创作，主要内容包括：一种瓦楞纸板专用胶合剂的制备方法,制备步骤为：(1)将清水1000-1100重量份放入反应罐中,加热至25-36℃；(2)向反应罐中加入淀粉和胶粉,淀粉180-200重量份,胶粉23-26重量份；搅拌12-15分钟；(3)其次向反应罐中加入清水150-170重量份,加热至35-38℃,搅拌2-4分钟；(4)再次向反应罐中加入淀粉170-190重量份,搅拌6-8分钟；(5)最后向反应罐中加入硼砂3-8重量份,搅拌3-5分钟搅拌3-5分钟,升温至58-60℃后即可用于瓦楞纸的粘合。本制备方法工艺简单,添加的助剂少,产品质量稳定。(A preparation method of a special adhesive for corrugated boards comprises the following preparation steps: (1) putting 1000 parts by weight of clean water and 1100 parts by weight of clean water into a reaction tank, and heating to 25-36 ℃; (2) adding starch and glue powder into a reaction tank, wherein the weight parts of the starch is 180 and the glue powder is 23-26; stirring for 12-15 min; (3) secondly, adding 150 parts by weight of clean water and 170 parts by weight of water into the reaction tank, heating to 35-38 ℃, and stirring for 2-4 minutes; (4) adding 190 parts by weight of 170-one starch into the reaction tank again, and stirring for 6-8 minutes; (5) and finally, adding 3-8 parts by weight of borax into the reaction tank, stirring for 3-5 minutes, and heating to 58-60 ℃ to bond corrugated paper. The preparation method has simple process, less added auxiliary agent and stable product quality.)

1. A preparation method of a special adhesive for corrugated boards is characterized by comprising the following steps: the preparation steps are as follows:

(1) putting 1000 parts by weight of clean water and 1100 parts by weight of clean water into a reaction tank, and heating to 25-36 ℃;

(2) adding starch and glue powder into a reaction tank, wherein the weight parts of the starch is 180 and the glue powder is 23-26; stirring for 12-15 min;

(3) secondly, adding 150 parts by weight of clean water and 170 parts by weight of water into the reaction tank, heating to 35-38 ℃, and stirring for 2-4 minutes;

(4) adding 190 parts by weight of 170-one starch into the reaction tank again, and stirring for 6-8 minutes;

(5) and finally, adding 3-8 parts by weight of borax into the reaction tank, stirring for 3-5 minutes, and heating to 58-60 ℃ to bond the corrugated paper.

2. The method for preparing the adhesive special for corrugated cardboards as claimed in claim 1, wherein the adhesive comprises the following steps: the starch is edible corn starch or cassava starch.

3. The method for preparing the adhesive special for corrugated cardboards as claimed in claim 1, wherein the adhesive comprises the following steps: the rubber powder is special rubber powder for corrugated boards at low temperature.

Technical Field

The invention relates to the technical field of adhesives, in particular to a preparation method of a special adhesive for corrugated boards.

Background

Corrugated board is also called corrugated board. The corrugated board is formed by bonding at least one layer of corrugated paper and one layer of boxboard paper, the corrugated corrugations of the corrugated board are like arch doors which are connected one by one and are mutually parallel to form a row and mutually supported to form a triangular structure body, the triangular structure body has better mechanical strength, can bear certain pressure from a plane, is rich in elasticity and has good buffering effect; the method is mainly used for manufacturing cartons, the sandwich of the cartons and other packaging materials of fragile commodities. Corrugated board is made up of waste paper and straw pulp through beating to obtain raw paper board similar to yellow paper board, mechanical processing to form corrugated board, and adhering it to board paper with adhesive.

At present, the adhesive for corrugated boards produced in China usually takes starch as a raw material, and the starch adhesive has wide sources, rich content, no toxicity, no pollution and low cost, so that adhesives for corrugated boards are basically prepared by taking starch as the raw material, and some adhesives for corrugated boards are also reported in published documents, such as:

1. chinese patent: a starch adhesive for producing corrugated cardboard and a preparation method thereof, application number: 201010222280.2, filing date: 2010.07.09, Applicant: guizhou foreign trade Shencai packaging Limited liability company, address: 550600 Hui county Chang tian industrial park of Guizhou province (district A), inventor: Penguang-Meng, abstract: the invention relates to a starch adhesive for producing corrugated boards and a preparation method thereof, belonging to the technical field of adhesives. Solves the problems that the performance of the starch adhesive is unstable, the starch adhesive is easy to delaminate and precipitate, and the corrugated board is easy to regain moisture and soften, so that the bonding strength and the edge pressure strength of the corrugated board are reduced. The starch adhesive is suitable for corrugated board production lines, and has the advantages of low cost, simple production process, no need of heating, no influence from four seasons, short reaction time, high drying speed, water resistance and strong adhesive force.

2. Chinese patent: a production process of special glue for producing corrugated boards is disclosed in the application number: 201510877729.1, filing date: 2015.12.04, Applicant: yaedong packaging, lazhou, address: 313000 Yaodong packaging Co., Ltd, of the Water chestnut lake town Phoenix bridge Huzhou, south Xue, Huzhou, Zhejiang province: zhoubaulin, abstract: a production process for producing special glue for corrugated boards comprises the following steps of combining a glue A layer and a glue B layer, wherein the glue A layer is prepared from the following raw materials in parts by weight: adding 90-100 parts of water and 6-8 parts of caustic soda into a reaction kettle, keeping the temperature between 28 ℃ and 30 ℃, and stirring for 1-2 minutes; adding 50-60 parts of edible starch, and stirring for 2-4 minutes; adding 0.5-0.7 part of caustic soda, and stirring for 30-60 seconds; the glue B is prepared from the following raw materials in parts by weight: 4-6 parts of resin or rubber, 2.5-3.5 parts of nano metal particles and 1-2 parts of starch are selected, and a proper amount of water is added for uniform stirring; and after the glue A is smeared on the surface of the corrugated board, the glue B is smeared. The special glue can effectively enhance the bonding degree of the glue, ensure the connection strength between corrugated boards of all layers, and simultaneously utilize the glue B attached to the outside of the glue A to change the surface performance of the corrugated boards and improve the waterproof strength and the impact strength.

3. Chinese patent: glue for adhering corrugated boards, application number: 201711073192.9, filing date: 2017.11.04, Applicant: shucheng Hongkong cardboard, Inc., address: 231300 Hui Anhui city Shucheng county economic technology development district Longtan north road, inventor: zhang Xiang, abstract: a glue for adhering corrugated boards relates to the technical field of paperboard manufacturing and processing, and is prepared from the following components: 30-50 parts of surfactant, 5-10 parts of anti-aging agent, 0.1-0.3 part of defoaming agent, 10-15 parts of toughening agent, 3-8 parts of accelerator, 20-25 parts of flame retardant, 1-3 parts of borax, 10-12 parts of starch and 50-80 parts of water. The glue disclosed by the invention is low in cost, environment-friendly and non-toxic in raw materials, free of pungent smell, convenient to store, not easy to solidify, not easy to tear corrugated boards after the glue is used, excellent in waterproof capability, safe and reliable due to the addition of the flame retardant.

4. Chinese patent: a preparation method of biologically modified corrugated board glue is disclosed in the application number: 201711190993.3, filing date: 2017.11.24, Applicant: tianchang city Tianxiang packaging company, address: 239300 in Anhui province, Chuzhou city, Tianchang city, Yuxing community, the inventor: houzhengyun, Xule Gao, abstract: the invention discloses a preparation method of a biologically modified corrugated board glue, and relates to the technical field of corrugated board glues. The biologically modified corrugated board glue is prepared by selecting cheap and easily available crop straws, changing waste into valuable, cutting and crushing the straws into straw particles, using a biological method, namely hydrolyzing the straws into a glucose solution by using a cellulase mixed solution, and then carrying out chemical reaction by using other additives and additives.

5. Chinese patent: a production process of corrosion-resistant corrugated board glue, which has the following application number: 201711193567.5, filing date: 2017.11.24, Applicant: tianchang city Tianxiang packaging company, address: 239300 in Anhui province, Chuzhou city, Tianchang city, Yuxing community, the inventor: houzhengyun, Xule Gao, abstract: the invention discloses a production process of corrosion-resistant corrugated board glue, and relates to the technical field of corrugated board glue. The production process of the corrosion-resistant corrugated board glue comprises the steps of firstly preparing alkali liquor, then adding other auxiliary agents such as corn starch, bridging agent, stabilizing agent and the like, and monitoring the viscosity in real time to determine the stirring time, so that the initial adhesion force of the corn starch in a low-temperature state and the rapid acceleration of water during solidification are ensured; and auxiliary agents such as a surfactant, a defoaming agent, a light filler and the like are added, so that the corrugated board glue has good bonding strength and corrosion resistance, and the service life of the bonded corrugated board is prolonged.

6. Chinese patent: a special glue for corrugated boards, application number: 201811244023.1, filing date: 2018.10.24, Applicant: anhui Jintian color printing packaging company, address: 233400 Anhui province, Bengbu city, Huaiyuan county economic development area, inventor: liuming water, abstract: the invention discloses glue special for corrugated boards, and relates to the technical field of glue. The glue comprises a glue A layer and a glue B layer; the glue A comprises the following raw materials in parts by mass: 10-15 parts of epoxy resin, 1-5 parts of polyvinyl alcohol and 1-3 parts of modified starch; the glue B comprises the following raw materials in parts by mass: 90-100 parts of deionized water, 50-60 parts of modified starch, 5-10 parts of sodium hydroxide, 5-10 parts of a stabilizer, 5-10 parts of organic bentonite, 1-5 parts of borax and 10-15 parts of polyethylene glycol 400. The glue disclosed by the invention is high in adhesion, and meanwhile, the waterproof strength and the impact strength of the paperboard are improved by using the glue B attached to the glue A.

Researches show that the starch-based adhesive for corrugated boards used at present needs to be added with a lot of additives due to the preparation process, and the preparation process is complex.

Disclosure of Invention

The invention aims to provide a preparation method of a special adhesive for corrugated boards, which has the advantages of simple process, less added additives and stable product quality.

The invention is realized by the following technical scheme:

a preparation method of a special adhesive for corrugated boards comprises the following preparation steps:

(1) putting 1000 parts by weight of clean water and 1100 parts by weight of clean water into a reaction tank, and heating to 25-36 ℃;

(2) adding starch and glue powder into a reaction tank, wherein the weight parts of the starch is 180 and the glue powder is 23-26; stirring for 12-15 min;

(3) secondly, adding 150 parts by weight of clean water and 170 parts by weight of water into the reaction tank, heating to 35-38 ℃, and stirring for 2-4 minutes;

(4) adding 190 parts by weight of 170-one starch into the reaction tank again, and stirring for 6-8 minutes;

(5) and finally, adding 3-8 parts by weight of borax into the reaction tank, stirring for 3-5 minutes, and heating to 58-60 ℃ to bond the corrugated paper.

The stirring is carried out by driving a blade in the reaction tank by a motor arranged on the top of the reaction tank, and the stirring rotating speed is 55-65 r/min.

Said borax, generally written as Na₂B₄O₇·10H₂O, a very important boron-containing mineral and boron compound. Usually a white powder containing colorless crystals, readily soluble in water. Borax has a wide range of applications, and can be used as a cleaning agent, a cosmetic, an insecticide, and also can be used for preparing a buffer solution and preparing other boron compounds, etc. Borax is available from the Danma boronization plant. Address: address, Danboronization factory in Guaning county, Liaoning county, Mandarin county, Liaoning county. And finally, adding borax which is a cross-linking agent, and stirring for reaction, wherein the cross-linking can increase the length of the straight chain of the starch and increase the viscosity.

The starch is edible corn starch or cassava starch. The method is purchased by food biochemical energy sale company Limited in edible corn starch Jilin, and has the address: xiantai street 1717 in the vinpoch economic technology development area of Jilin province.

The rubber powder is special rubber powder for corrugated boards at low temperature. The special rubber powder for the low temperature of the corrugated board can be purchased from Shenzhen, New Junheng technology development Limited company, and the address is as follows: shenzhen city Guangming new zone Matian street horse hill head community Jun forest mansion 1102.

The invention has the beneficial effects that:

1. the special adhesive for the corrugated board is added with starch in two steps, a part of starch and special low-temperature rubber powder for the corrugated board are added into water at 25-36 ℃ and stirred, the special low-temperature rubber powder for the corrugated board has the effects of saving steam, environmental-friendly pulping, stability, moisture resistance and viscosity increase, and is suitable for the starch glue in a paste making mode.

2. The raw materials of the special adhesive for corrugated boards only use water, starch, rubber powder and borax, the adhesive with stable performance can be prepared by controlling the adding sequence and the adding amount, the preparation process is simple, and other additives are not required to be additionally added.

Detailed Description

In order to make the technical solutions and advantages of the present invention clearer, the following description clearly describes the technical solutions of the present invention in combination with the embodiments.