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Laminating non-woven fabric for high-hygroscopic drying agent, preparation method thereof and packaging bag made of laminating non-woven fabric

A technology of laminating non-woven fabric and desiccant, applied in the directions of transportation and packaging, packaging, bags, etc., can solve the problems of affecting the waterproof performance of waterproof and breathable membrane, leakage of calcium chloride aqueous solution, water seepage on the surface of products, etc., to improve mechanization The effect of production speed, excellent air permeability and high mechanical strength

Inactive Publication Date: 2015-11-11
KUNSHAN WEISHENG DRIER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the calcium chloride aqueous solution will slowly corrode the calcium carbonate particles in the PE waterproof and breathable membrane, destroy the microporous structure of the PE waterproof and breathable membrane, and the micropores will become larger, directly affecting the waterproof performance of the waterproof and breathable membrane. Pores, causing the leakage of calcium chloride aqueous solution, resulting in water seepage on the surface of the product

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Laminating non-woven fabric for high-hygroscopic drying agent, preparation method thereof and packaging bag made of laminating non-woven fabric
  • Laminating non-woven fabric for high-hygroscopic drying agent, preparation method thereof and packaging bag made of laminating non-woven fabric
  • Laminating non-woven fabric for high-hygroscopic drying agent, preparation method thereof and packaging bag made of laminating non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Preparation of laminated non-woven fabric for high moisture absorption desiccant

[0034] PP waterproof and breathable membrane is selected at 50g / m 2 The biaxially stretched PP waterproof and breathable membrane, the PE spunbond non-woven fabric is made of DuPont 1025D spunbonded non-woven fabric, and the adhesive is made of one-component moisture-curing polyurethane adhesive. Using point spraying method, heat the adhesive and spray it on Dupont 1025D spunbond non-woven fabric, and control the glue amount at 5-8g / m 2 Within the range, the biaxially stretched PP waterproof breathable film is laminated on the DuPont 1025D spunbonded nonwoven fabric, so that the PP waterproof breathable film and the PE spunbonded nonwoven fabric are combined together to obtain the high moisture absorption desiccant of the present invention. Laminated non-woven fabric.

Embodiment 2

[0035] Example 2: Preparation of laminated non-woven fabric for high moisture absorption desiccant

[0036] PP waterproof and breathable membrane is selected at 50g / m 2 The biaxially stretched PP waterproof and breathable membrane, the PE spunbond non-woven fabric is made of DuPont 1443R spunbonded non-woven fabric, and the adhesive is made of EVA hot melt adhesive. Using spot spraying method, heat the adhesive and spray it on Dupont 1443R spunbond non-woven fabric, and control the glue amount at 5-8g / m 2 Within the range, the biaxially stretched PP waterproof and breathable film is laminated on the DuPont 1443R spunbonded nonwoven fabric, thereby making the multi-film nonwoven fabric for the high moisture absorption desiccant of the present invention.

Embodiment 3

[0037] Example 3: Preparation of laminated non-woven fabric for high moisture absorption desiccant

[0038] PP waterproof and breathable membrane is selected at 70g / m 2 The biaxially stretched PP waterproof and breathable membrane, the PE spunbond non-woven fabric is DuPont 1056D spunbond non-woven fabric, and the adhesive is a one-component moisture-curing polyurethane adhesive. Using the coating method, the binder is heated and coated on the DuPont 1056D spunbonded non-woven fabric, and the amount of glue is controlled at 5-8g / m 2 Within the range, the biaxially stretched PP waterproof and breathable film is laminated on the DuPont 1056D spunbonded nonwoven fabric to obtain the multi-film nonwoven fabric for the high moisture absorption desiccant of the present invention.

[0039] refer to figure 1 As shown, it is not difficult to see that in the above three examples, the prepared laminated nonwoven fabrics for high moisture absorption desiccant are composed of PP waterpro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a laminating non-woven fabric special for a high-hygroscopic drying agent and a drying agent packaging bag made of the laminating non-woven fabric, and further discloses a preparation method of the laminating non-woven fabric. The laminating non-woven fabric for the high-hygroscopic drying agent is constructed by a PP (Propene Polymer) water-proof breathable film positioned on an outer layer, a PE (Polyethylene) spun-bonded non-woven fabric positioned on an inner layer, and a bonding agent bonded between the PP water-proof breathable film and the PE spun-bonded non-woven fabric. Through adoption of the laminating non-woven fabric, the high-hygroscopic drying agent can be packaged safely and reliably without water seepage.

Description

technical field [0001] The invention relates to a laminated non-woven fabric special for high moisture absorption desiccant, a preparation method of the laminated non-woven fabric, and a desiccant packaging bag made of the laminated non-woven fabric. The invention belongs to the technical field of desiccant packaging materials. Background technique [0002] As modern people have higher and higher requirements for the quality of life at home, more and more desiccants are accepted by people as moisture-proof desiccants. High-performance desiccant (abbreviation: high moisture absorption desiccant) refers to a desiccant that can absorb water vapor twice its own weight in the air. More than 4 times its own weight), it becomes liquid after absorbing moisture, which requires the packaging material to have a certain waterproof performance and prevent the liquid from leaking. [0003] Existing packaging materials are generally made of PE waterproof breathable film and various spunb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D30/04B32B27/08B32B7/12
Inventor 沈飞
Owner KUNSHAN WEISHENG DRIER
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