Breathable resin with high breathability and preparation method of breathable resin

A breathable and resin technology, applied in the field of breathable resin and its preparation, can solve the problems of short continuous production time, uneven distribution of calcium carbonate, poor air permeability, etc., and achieve the effect of avoiding waste

Active Publication Date: 2015-03-25
CHONGQING HETAI PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly the following problems in the production process of breathable resins used in breathable films: (1) the poor compatibility of inorganic materials calcium carbonate and polyolefin materials, and the uneven distribution of calcium carbonate; (2) the problem of poor air permeability , the air permeability of the film still cannot reach the expected state; (3) it cannot meet the needs of high-speed production, and now the breathable resin is used in the breathable film to only reach a production speed of about 100 m / min; (4) the continuous production time is short, and only Achieve continuous 12h production capacity

Method used

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  • Breathable resin with high breathability and preparation method of breathable resin

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Embodiment 1

[0032] A breathable resin with high air permeability, which is made of the following components according to the weight percentage shown: calcium carbonate powder: 55%, antioxidant: 0.2%, processing aid: 0.5%, color masterbatch: 5%, 2036P polyethylene: 20%, 0271 polyethylene: 5%, metallocene 3518: 14.3%.

[0033] Wherein, antioxidant is antioxidant 168, and processing aid is silane coupling agent kh550 and lubricant, and the weight ratio of silane coupling agent kh550 and lubricant is 1:1.

[0034] A method for preparing a breathable resin with high gas permeability, the method comprising the steps of:

[0035] (1) The activation treatment of calcium carbonate powder, the steps are as follows:

[0036] a, 400 mesh calcium carbonate powder is mixed with the suspension liquid that mass percent concentration is 30~40%, add sodium stearate dispersant, sodium stearate add-on is 0.1wt% of calcium carbonate powder weight, carry out wet Grinding to a D50 average particle size of 1.8...

Embodiment 2

[0041]A breathable resin with high air permeability, which is made of the following components according to the weight percentage shown: calcium carbonate powder: 35%, antioxidant: 0.5%, processing aid: 2%, color masterbatch: 10%, 1048P polyethylene: 27.5%, 2426F polyethylene: 20%, metallocene SP330: 5%.

[0042] Among them, the antioxidant is 1010, the processing aid is titanate coupling agent 201 and lubricant, and the weight ratio of titanate coupling agent 201 and lubricant is 1:1.

[0043] A method for preparing a breathable resin with high gas permeability, the method comprising the steps of:

[0044] (1) The activation treatment of calcium carbonate powder, the steps are as follows:

[0045] a, 400 mesh calcium carbonate powder is mixed with the suspension liquid that mass percent concentration is 30~40%, adds sodium stearate dispersant, and sodium stearate add-on is 0.5wt% of calcium carbonate powder weight, carries out wet Grinding to D50 average particle size is 1....

Embodiment 3

[0050] A breathable resin with high air permeability, which is made of the following components by weight percentage: calcium carbonate powder: 39.3%, antioxidant: 0.2%, processing aid: 0.5%, color masterbatch: 5%, 1048P polyethylene: 30%, 2426F polyethylene: 20%, metallocene 3518: 5%.

[0051] Among them, antioxidant 1010 and antioxidant 168 are 50% each, processing aids are titanate coupling agent 401 and lubricant, and the weight ratio of titanate coupling agent 401 and lubricant is 1:1.

[0052] The preparation method is the same as in Example 1, only the content of each component is changed.

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Abstract

The invention relates to breathable resin with high breathability and a preparation method of the breathable resin. The breathable resin with high breathability is prepared by the following components by weight percent: 35 to 55 percent of calcium carbonate powder, 0.2 to 0.5 percent of antioxidant, 0.5 to 2 percent of processing additive, 5 to 10 percent of color masterbatch, 20 to 30 percent of linear low-density polyethylene, 5 to 20 percent of low-density polyethylene and 5 to 20 percent of metallocene polyethylene. The breathable resin with high breathability is suitable for producing a breathable film with high breathability, the breathability can reach 5000g/m<2>.24h, the breathable resin is applicable to a high-speed production line in the process for manufacturing the breathable film, the production speed can reach 200m/min, and the production state of continuous production for 36 hours without stopping can be realized.

Description

technical field [0001] The invention relates to a breathable resin, in particular to a breathable resin with high air permeability and a preparation method thereof. Background technique [0002] Breathable resin refers to a compound mainly composed of polyolefin resin and calcium carbonate blended and plasticized, and is the raw material for producing breathable film. The breathable resin is melted into a film according to the measurement, and then stretched in one or two directions to become a breathable (air, moisture, etc.) impermeable (liquid, dust, etc.) film. Breathable film, which is widely used in the water-proof layer (bottom film) of baby and adult diapers / diapers / pads; Water-proof layer (back film) of nursing towels / nursing pads; isolation layer of disposable surgical gowns, protective clothing, etc.; fresh-keeping inner and outer packaging of vegetables and fruits; new environmental protection and energy-saving building materials, etc. Air permeability is an im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08K13/06C08K9/10C08K3/26
CPCC08L23/0815C08L2203/16C08L2205/02C08L2205/025C08L2205/03C08L2207/066C08L23/06C08K13/06C08K9/10C08K2003/265C08K5/526
Inventor 刘文艺
Owner CHONGQING HETAI PLASTIC
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