The cost is one of the most concerned issues for many carton companies. While ensuring quality, it also minimizes production costs and enables companies to gain a firm foothold in the fierce market competition. Improve and ensure the quality of corrugated boxes and reduce costs can be started from the following aspects. Here we will introduce you in two phases. The first is the base paper.
Reasonable selection of good quality and low basis weight paper production practices show that whether the production of export cartons or domestic sales of cartons, the raw materials used (caseboard and corrugated paper) account for more than 60% of the entire cartons production costs. Therefore, according to the quality requirements of the cartons produced, choosing the right raw materials is directly related to the quality of cartons and the economic benefits of the company. The compressive strength is the best measure of the actual use of the carton and is the primary indicator of the quality assessment of the carton manufacturer and the carton user. From the relevant theory and calculation formulas, it can be known that after selecting the thickness of the corrugated board and determining the size of the corrugated board and the carton, the carton compressive strength (BCT) completely depends on the side-pressure strength (ECT) of the corrugated board, and the corrugated board The side pressure strength of the paperboard depends on the raw material's RCT, especially the corrugated paper's ring crush strength, because the corrugated paper plays the role of a support for the carton. Therefore, in order to improve the side pressure strength of corrugated board, in addition to the selection of corrugated and corrugated shapes of corrugated board, the grade and weight of the raw materials should be selected. In the past, many carton manufacturers used raw materials with lower grades or higher grammage weights, and produced corrugated paperboards with thicker AA enamels and a relatively backward CC cullet and UU peaks, and the appearance of corrugated cardboard. It is clunky and not beautiful. 70% of export cartons use double corrugated cardboard, while foreign or domestic foreign-funded enterprises mostly use high-grade and low-gram raw materials, and the corrugated board produced can meet the requirements of making export cartons. . If a cardboard box is made of low-grade and high-weight corrugated cardboard, in order to ensure the physical properties of the cardboard box, the grammage of the corrugated cardboard must be increased, thereby consuming a large amount of raw materials, resulting in an increase in cost.
Carton material selection should pay attention to the following points: 1. Avoid the use of low-grade raw materials If carton enterprises choose low-grade raw materials to make corrugated paperboard, it will inevitably meet the tension between the same width of the same width of the raw materials, with the thickness of the door width Uneven weight and the inconsistency of water content between the inside and outside of the same web and other factors, resulting in instability of the raw material ring pressure, thereby reducing the side pressure of corrugated cardboard and carton compressive strength. Therefore, in particular, the use of low-grade raw materials should be avoided when using export cartons.
2. Use low-weight raw materials Imported raw materials in addition to the quality is better than domestic raw materials, but also has a great advantage, that is, low raw material weight, general boxboard paper is 175 ~ 300G/m2, corrugated medium is 105 ~ 127G /m2.
3) The raw materials produced by the domestic corrugated base papers made from domestically-made corrugated base papers with different characteristics are generally based on straw kraft raw materials in the north, and their paper properties are resistant to pressure, but the paper is brittle and has poor tensile strength; Mainly, its paper properties are strong in tensile strength, but its paper is soft and its compressive ability is poor. In the manufacture of AB-type double corrugated cardboard, the impact strength of corrugated cardboard is affected. A-grade corrugated medium is larger than B-grade corrugated medium. Therefore, A-type corrugated medium close to the paper should be selected to have a higher ring-crush strength. High north paper. The B-type corrugating medium which is close to the surface paper can be made of northern or southern paper.
The use of high-quality, high-strength, low-weight raw materials in the carton production process is an effective way to improve the quality of cartons and reduce costs. At present, the “pavement of paper is light and the weight of core paper is heavy†is a common practice in the foreign carton industry. It is an effective way to reduce production costs and improve product quality.
Reasonable selection of good quality and low basis weight paper production practices show that whether the production of export cartons or domestic sales of cartons, the raw materials used (caseboard and corrugated paper) account for more than 60% of the entire cartons production costs. Therefore, according to the quality requirements of the cartons produced, choosing the right raw materials is directly related to the quality of cartons and the economic benefits of the company. The compressive strength is the best measure of the actual use of the carton and is the primary indicator of the quality assessment of the carton manufacturer and the carton user. From the relevant theory and calculation formulas, it can be known that after selecting the thickness of the corrugated board and determining the size of the corrugated board and the carton, the carton compressive strength (BCT) completely depends on the side-pressure strength (ECT) of the corrugated board, and the corrugated board The side pressure strength of the paperboard depends on the raw material's RCT, especially the corrugated paper's ring crush strength, because the corrugated paper plays the role of a support for the carton. Therefore, in order to improve the side pressure strength of corrugated board, in addition to the selection of corrugated and corrugated shapes of corrugated board, the grade and weight of the raw materials should be selected. In the past, many carton manufacturers used raw materials with lower grades or higher grammage weights, and produced corrugated paperboards with thicker AA enamels and a relatively backward CC cullet and UU peaks, and the appearance of corrugated cardboard. It is clunky and not beautiful. 70% of export cartons use double corrugated cardboard, while foreign or domestic foreign-funded enterprises mostly use high-grade and low-gram raw materials, and the corrugated board produced can meet the requirements of making export cartons. . If a cardboard box is made of low-grade and high-weight corrugated cardboard, in order to ensure the physical properties of the cardboard box, the grammage of the corrugated cardboard must be increased, thereby consuming a large amount of raw materials, resulting in an increase in cost.
Carton material selection should pay attention to the following points: 1. Avoid the use of low-grade raw materials If carton enterprises choose low-grade raw materials to make corrugated paperboard, it will inevitably meet the tension between the same width of the same width of the raw materials, with the thickness of the door width Uneven weight and the inconsistency of water content between the inside and outside of the same web and other factors, resulting in instability of the raw material ring pressure, thereby reducing the side pressure of corrugated cardboard and carton compressive strength. Therefore, in particular, the use of low-grade raw materials should be avoided when using export cartons.
2. Use low-weight raw materials Imported raw materials in addition to the quality is better than domestic raw materials, but also has a great advantage, that is, low raw material weight, general boxboard paper is 175 ~ 300G/m2, corrugated medium is 105 ~ 127G /m2.
3) The raw materials produced by the domestic corrugated base papers made from domestically-made corrugated base papers with different characteristics are generally based on straw kraft raw materials in the north, and their paper properties are resistant to pressure, but the paper is brittle and has poor tensile strength; Mainly, its paper properties are strong in tensile strength, but its paper is soft and its compressive ability is poor. In the manufacture of AB-type double corrugated cardboard, the impact strength of corrugated cardboard is affected. A-grade corrugated medium is larger than B-grade corrugated medium. Therefore, A-type corrugated medium close to the paper should be selected to have a higher ring-crush strength. High north paper. The B-type corrugating medium which is close to the surface paper can be made of northern or southern paper.
The use of high-quality, high-strength, low-weight raw materials in the carton production process is an effective way to improve the quality of cartons and reduce costs. At present, the “pavement of paper is light and the weight of core paper is heavy†is a common practice in the foreign carton industry. It is an effective way to reduce production costs and improve product quality.
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