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Intermittent stretching air-permeable material and process flow thereof

A technology of breathable materials and process flow, applied in the field of intermittent stretching breathable materials and its process flow, can solve the problems of low tensile strength and elongation rate, high energy consumption, film rupture, etc., and achieve transverse tensile strength and elongation Good elongation, good air permeability and beautiful appearance

Inactive Publication Date: 2011-09-14
杭州全兴塑业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the production process used in the processing of PE film breathable materials in the prior art needs to be formed after secondary heating and stretching, which has high energy consumption, low yield and low output, and at the same time The transverse tensile strength and elongation of the products obtained by this production process are low, and when applied to cushion products, it is easy to cause transverse rupture of the film, making the product unusable

Method used

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  • Intermittent stretching air-permeable material and process flow thereof
  • Intermittent stretching air-permeable material and process flow thereof
  • Intermittent stretching air-permeable material and process flow thereof

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in detail:

[0016] Such as figure 1 , 2 , a kind of intermittent stretching breathable material and its technological process shown in 3, the PE film 1 containing 40-60% calcium carbonate 7 that needs to be processed passes through the rigid roller 3 with grooves or the steel roller with convex lines 4. By applying pressure between the rubber roller 2 and the steel roller, the film is partially stretched along with the deformation of the rubber roller 2 to form light and dark interval stripes, and then cut and rolled for finished packaging. The local stretched width ranges from 0.1-1mm and appears white, while the unstretched part appears dark gray. The pressure range between the rubber roller and the steel roller is 0.5-10Mpa, and the contact time range is 0.1-10 seconds.

[0017] Due to the local stretching of the PE film 1 containing 40-60% calcium carbonate ...

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Abstract

The invention provides an intermittent stretching air-permeable material and a process flow thereof. The process flow comprises the following steps: allowing a PE (polyethylene) film containing 40-60% calcium carbonate which needs to be processed to pass through a steel roller with grooves and a steel roller with raised strips; applying pressure between a rubber roller and the steel roller so that the film is locally deformed along with the rubber roller so as to realize local stretching and form alternately dark and bright fringes; and then splitting, winding and finally packaging the finished product. The product obtained by the process flow has the advantages of good air permeability effect, beautiful appearance, high transverse tensile strength and high elongation as well as low energy consumption and high yield by utilizing a one-time molding process.

Description

【Technical field】 [0001] The invention relates to a production process flow of a PE breathable film, in particular to an intermittently stretched breathable material and a process flow thereof. 【Background technique】 [0002] The PE air-permeable membranes used in the prior art are all full-width air-permeable, and they need to be heated and stretched twice before they can be formed during production. The energy consumption is high, the yield of finished products is low, and the output is also low. At the same time, after secondary stretching, while the longitudinal performance of the product is improved, the transverse tensile strength and elongation are greatly reduced. It is applied to final products, especially cushion products (such as disposable mattresses, sanitary napkins, Pads, baby diapers, pet pads, etc.), it is easy to cause transverse rupture of the film, making the product unusable. 【Content of invention】 [0003] In order to solve the above shortcomings, th...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K3/26B29D7/01
Inventor 杭建民
Owner 杭州全兴塑业有限公司
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