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Waterproof packing cardboard and producing method thereof

A packaging cardboard and production method technology, applied in the directions of packaging paper, packaging paper, packaging, etc., can solve the problems affecting product packaging quality, rising packaging costs, plastic board deformation, etc., to achieve easy recycling and recycling, environmental protection, The effect of stable packaging performance

Inactive Publication Date: 2009-11-25
武汉市江夏区江南实业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two packaging materials have been used in the steel industry for many years, but because steel and plastic are non-renewable resources, the price of these materials has increased significantly in recent years, resulting in a sharp increase in packaging costs
In addition, thin steel plates are used as product packaging materials, which are prone to rust after being stored for a certain period of time.
The plastic board is easily deformed and brittle due to the influence of the climate.
The existence of these problems directly affects the packaging quality of the product

Method used

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  • Waterproof packing cardboard and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take 6 parts of alkyl ketene dimers with a solid content of 12% and 1 part of polyamide epoxy resin with a solid content of 15% by weight, and mix them uniformly at room temperature to prepare a composite water-repellent agent for subsequent use;

[0018] A composite water-repellent agent with a pulp amount of 3.0% by weight (that is, 3.0% of the pulp amount) is added to the pulp in the papermaking process to prepare waterproof paper 2;

[0019] Take 3 layers of waterproof paper, glue them layer by layer with adhesive on the equipment, and dry at 80-100°C to make a composite waterproof paperboard with a thickness of 1.5-2.0mm;

[0020] Coat one side (outside) of the composite waterproof cardboard with a layer of colored surface water-repellent agent 1 (appropriate amount), and dry at 50-80°C;

[0021] A layer of vapor phase corrosion inhibitor 3 is coated on the other side (inner surface) of the composite waterproof cardboard to prepare a waterproof and rust-proof packa...

Embodiment 2

[0023] Take 5 parts of alkyl ketene dimers with a solid content of 15% and 1 part of polyamide epoxy resin with a solid content of 13% by weight, and mix them uniformly at room temperature to prepare a composite water-repellent agent for subsequent use;

[0024] A composite water-repellent agent with a pulp amount of 2.25% by weight is added to the paper pulp in the papermaking process to prepare waterproof paper 2 for later use;

[0025] Take 4 layers of waterproof paper, glue them layer by layer with adhesive on the equipment, and dry at 80-100°C to make a composite waterproof paperboard with a thickness of 2.5-3.0mm;

[0026] Coating a layer of colored surface water repellent 1 (appropriate amount) on one side of the composite waterproof cardboard, and drying at 50-80°C.

[0027] On the other side of the composite waterproof paperboard, a layer of vapor phase corrosion inhibitor 3 can be coated to prepare waterproof and antirust packaging paperboard.

Embodiment 3

[0029] Take 4 parts of alkyl ketene dimer with a solid content of 15% and 1 part of polyamide epoxy resin with a solid content of 15% by weight, and mix them uniformly at normal temperature to prepare a composite water-repellent agent for subsequent use;

[0030] Waterproof paper is prepared by adding 1.5% composite water-repellent agent to the pulp in the papermaking process by weight;

[0031] Take 6 layers of waterproof cardboard, glue them layer by layer with adhesive on the equipment, and dry them at 80-100°C to make a composite waterproof cardboard with a thickness of 3.5-4mm;

[0032] Coat one side (outside) of the composite waterproof cardboard with a layer of colored surface water repellent (appropriate amount), and dry at 50-80°C;

[0033] The other side (inner surface) of the composite waterproof paperboard is coated with a layer of vapor phase corrosion inhibitor to prepare waterproof and antirust packaging paperboard.

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Abstract

The invention relates to a packaging cardboard with waterproof and antirust functions and a manufacturing method thereof. It includes a waterproof cardboard, one side of the waterproof cardboard is coated with a surface water-repellent agent, and the waterproof cardboard is composed of a cardboard containing a composite water-resistant agent, and the composite water-resistant agent is composed of an alkyl ketene dimer and The polyamide epoxy resin is mixed in a weight ratio of 4-6:1. The beneficial effects of the present invention are: 1. The waterproof cardboard is formed by multi-layer compounding, which not only has good strength and toughness, impact resistance, but also has good waterproof and moisture-proof performance. Therefore, it has excellent packaging performance and stable packaging performance; packaging steel (coil) plates with waterproof cardboard of the present invention can fully meet the packaging requirements and can meet the requirements of outdoor storage; 2. The production cost is low and the source of raw materials is wide; 3. It is easy to recycle and recycle after use, and it can also be degraded naturally, which is beneficial to environmental protection.

Description

technical field [0001] The invention relates to a packaging cardboard with waterproof and antirust functions, in particular to a waterproof and antirust packaging cardboard used for packaging metal materials such as steel sheets and coils and a manufacturing method thereof. Background technique [0002] At present, when the steel coils and steel plates produced in the steel industry are packaged at the factory, they are mostly made of thin steel plates or plastic plates. The above two packaging materials have been used in the steel industry for many years. However, since steel and plastic are non-renewable resources, the price of these materials has increased significantly in recent years, resulting in a sharp increase in packaging costs. In addition, thin steel plates are used as product packaging materials, which are prone to rust after being stored for a certain period of time. The plastic board is easily deformed and brittle due to the influence of climate. The existen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/10D21H27/24D21H27/28D21H27/30B32B29/06B31F1/00
Inventor 杜兴初王菊珍刘雄文潘启顺潘启来
Owner 武汉市江夏区江南实业有限公司
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