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Waterproof breathable membrane stretching device

A waterproof breathable film and stretching device technology, applied in the field of waterproof breathable film production devices, can solve problems such as uneven stretching, and achieve the effects of uniform stretching, uniform stretching and sufficient stretching.

Pending Publication Date: 2020-03-31
福建宏科新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a stretching device for waterproof and breathable film to solve the problem that the existing stretching device is prone to uneven stretching

Method used

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  • Waterproof breathable membrane stretching device
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Embodiment Construction

[0021] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but only to illustrate the essence of the technical solutions of the present invention.

[0022] In the following description, for the purposes of explaining the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment may be practiced without one or more of these specific details. In other instances, well-known devices, structures and techniques associated with the present application may not have been shown or described in detail in order to avoid unnecessari...

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Abstract

The invention relates to a waterproof breathable membrane stretching device which comprises a drying oven, an air heater and at least four sets of solid stretching rollers, a membrane inlet and a membrane outlet are formed in the two ends of the drying oven respectively, a hot air opening is formed in each side face of the drying oven, and an air suction opening is formed in the top of the dryingoven; an air inlet of the air heater is in fluid communication with the air suction opening, and an air outlet of the air heater is in fluid communication with the hot air opening; the stretching rollers are arranged in the middle of the same horizontal plane in the drying oven and are separated at equal interval, and the rotating speeds of the stretching rollers are sequentially increased along the advancing direction of a membrane. The membrane is stretched for multiple steps, the stretching rate of each step is small, the membrane can be fully and evenly stretched, the air permeability is even, the width is reduced little, and the product yield is increased; and the membrane is uniformly heated in the drying oven by adopting heated air, so that the heating temperature of the surface ofthe membrane is more uniform compared with an existing conduction oil heating mode, and the stretching is more uniform.

Description

technical field [0001] The invention relates to the field of production devices for waterproof and breathable membranes, in particular to a stretching device for waterproof and breathable membranes. Background technique [0002] The waterproof and breathable membrane is mainly based on thermoplastics, added inorganic mineral fillers, extruded by casting cold roll forming method, and then stretched longitudinally to make it have a unique microporous structure. These special structural micropores distributed in high density on the surface of the waterproof and breathable membrane make the waterproof and breathable membrane not only block the leakage of liquid water, but also allow gas molecules such as water vapor to pass through. At present, the main application fields of waterproof and breathable membranes include personal hygiene care products, medical protective products (such as medical mattresses, protective clothing, surgical gowns, surgical sheets, hot compresses, medi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C55/06B29C35/06
CPCB29C55/065B29C35/045B29C35/06
Inventor 郑劲松郑忠诚郑景文
Owner 福建宏科新材料科技有限公司
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