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Drying agent coating film

A technology of desiccant and coating film, which is applied in the direction of packaging, wrapping paper, flexible covering, etc., and can solve the problem of poor strength of national permeable paper or non-woven fabrics, which cannot adapt to automatic multi-column and high-speed production equipment, and non-woven fabrics Poor dust resistance and other problems, to achieve consistent appearance and surface performance, good air permeability, and high dust resistance

Active Publication Date: 2014-02-12
昆山建全防水透气材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1: National permeable paper or non-woven fabrics have poor strength and cannot meet the needs of modern automatic multi-column and high-speed production equipment
[0008] 2: Non-woven fabrics have poor dust resistance and are not suitable for use with desiccants for medicine, Chinese patent medicines, health care products, etc.

Method used

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  • Drying agent coating film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 Preparation of desiccant coating film of the present invention

[0045] The first step: Polymer plastic spunbonded non-woven fabric glue coating:

[0046] 35g / m 2 High-molecular plastic PET / PE spun-bonded non-woven fabrics are coated with water-based polyurethane composite glue and dried properly for use.

[0047] The second step: composite molding with polymer plastic non-woven fabrics:

[0048] Combine the above materials with 35g / m 2 High-molecular plastic PET non-woven fabric, directly heat-pressed and compounded.

Embodiment 2

[0049] Example 2 Preparation of desiccant coating film of the present invention

[0050] The first step: Polymer plastic spunbonded non-woven fabric glue coating:

[0051] 55g / m 2 High-molecular plastic PET / PE spun-bonded non-woven fabrics are coated with water-based polyurethane composite glue and dried properly for use.

[0052] The second step: composite molding with polymer plastic non-woven fabrics:

[0053] Combine the above materials with 25g / m 2 High-molecular plastic PET non-woven fabric, direct hot pressing compound molding

Embodiment 3

[0054] Example 3 Preparation of desiccant coating film of the present invention

[0055] The first step: Polymer plastic spunbonded non-woven fabric glue coating:

[0056] 25g / m 2 High-molecular plastic PET / PE spun-bonded non-woven fabrics are coated with water-based polyurethane composite glue and dried properly for use.

[0057] The second step: composite molding with polymer plastic non-woven fabrics:

[0058] Combine the above materials with 45g / m 2 High-molecular plastic PET non-woven fabric, direct hot pressing compound molding

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Abstract

The invention provides a drying agent coating film, i.e. Wiener non-woven cloth. The drying agent coating film is characterized by being formed by coating and then carrying out hot-pressing composition waterborne polyurethane resin on macromolecule plastic non-woven cloth and macromolecule plastic spunbond non-woven cloth. The drying agent coating film is high in strength and relatively high in dust prevention property, and can be adapted to production of automatic multi-column and high-speed production equipment.

Description

technical field [0001] The invention relates to the technical field of composite packaging materials, in particular to a novel desiccant coating film. Background technique [0002] The packaging material used as a desiccant must have the following properties: the material must have sufficient mechanical strength, be breathable, not leak, can be directly heat-sealed to adapt to automatic packaging machinery, and can be printed and other processing properties. [0003] Nowadays, heat-sealed tea filter paper (abbreviation: Guotou paper) and PET spunbond non-woven fabric (abbreviation: domestic non-woven fabric) are commonly used as desiccant packaging materials. The main composition of Guotou paper is natural plant fiber, and its main defects are The strength of the material itself is not high, and the heat sealing strength is poor; the main components of domestic non-woven fabrics are polyethylene terephthalate (PET for short) and polypropylene (PP) or polyethylene (PE). The m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/40B32B7/02
Inventor 沈飞
Owner 昆山建全防水透气材料有限公司
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