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A calender roller with rubber-covered composite material and its processing technology

A composite material and processing technology, used in calenders, adhesives, textiles and papermaking, etc., can solve the problems of increasing papermaking costs, wear resistance, corrosion resistance, and low service life. Easy to loose, long service life, improve the effect of paper finish

Inactive Publication Date: 2016-08-17
JIANGSU FOOD & PHARMA SCI COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface smoothness, wear resistance, and corrosion resistance of the current calender rolls are not up to the expectations of users, and the service life is low. Therefore, frequent replacement of this part increases the cost of papermaking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In the embodiment of the present invention, a kind of processing technology of the calender roller with rubber-coated composite material, the specific steps are as follows:

[0021] (1) The liquid metal is centrifugally poured under the gravity coefficient of 80 times, the cooling is accelerated, and the metal becomes the roller bushing after solidification;

[0022] (2) Configure the rubberized composite material. The raw materials of the rubberized composite material in parts by weight include: 50 parts of PET, 30 parts of ethylene-vinyl acetate copolymer EVA, 5 parts of compatibilizer, 0.5 part of antioxidant, high polysiloxane 3 parts, the compatibilizer is the mixture of maleic anhydride graft SEBS-g-MAH and ethylene-acrylic acid copolymer EAA;

[0023] (3) Put the prepared roller bushing ring into the mold and adjust the position, inject the rubber-coated composite material into the mold and carry out heat preservation for 8 hours to vulcanize and form;

[0024] ...

Embodiment 2

[0028] In the embodiment of the present invention, a kind of processing technology of the calender roller with rubber-coated composite material, the specific steps are as follows:

[0029] (1) The liquid metal is centrifugally poured under the gravity coefficient of 100 times, the cooling is accelerated, and the metal becomes the roller bushing after solidification;

[0030] (2) Configure the rubber-coated composite material. The raw materials of the rubber-coated composite material include: 50-60 parts of PET, 35 parts of ethylene-vinyl acetate copolymer EVA, 8 parts of compatibilizer, 0.8 parts of antioxidant, high poly silicon 4 parts of oxane, compatibilizer is the mixture of maleic anhydride graft SEBS-g-MAH and ethylene-acrylic acid copolymer EAA;

[0031] (3) Put the prepared roller bushing into the mold and adjust the position, inject the rubber-coated composite material into the mold and keep it warm for 9 hours to vulcanize and form;

[0032] (4) configuration adhes...

Embodiment 3

[0036] In the embodiment of the present invention, a kind of processing technology of the calender roller with rubber-coated composite material, the specific steps are as follows:

[0037] (1) The liquid metal is centrifugally poured under the gravity coefficient of 120 times, the cooling is accelerated, and the metal becomes the roller bushing after solidification;

[0038] (2) Configure the rubberized composite material. The raw materials of the rubberized composite material include: 60 parts of PET, 40 parts of ethylene-vinyl acetate copolymer EVA, 10 parts of compatibilizer, 1 part of antioxidant, high polysiloxane 5 parts, the compatibilizer is the mixture of maleic anhydride graft SEBS-g-MAH and ethylene-acrylic acid copolymer EAA;

[0039] (3) Put the prepared roller bushing into the mold and adjust the position, inject the rubber-coated composite material into the mold and keep it warm for 10 hours to vulcanize and form;

[0040] (4) configure adhesive, the raw materi...

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Abstract

The invention discloses a calendar bowl with a rubber coating composite. The calendar bowl comprises a bowl shaft and a bowl sleeve. The bowl sleeve comprises a bowl sleeve lining ring and a rubber coating layer. The two ends of the bowl shaft are provided with bearings. A coupler is arranged on the outer side of the bearing, located on one side, of the bowl shaft. The rubber coating layer comprises the rubber coating composite and an adhesion agent. The rubber coating composite comprises, by weight, PET, EVA, a bulking agent, an anti-oxidant and polysiloxane. The adhesion agent comprises, by weight, a curing agent, an accelerant, a needle-like reinforcing filler and m-benzol unsaturated resin. The bowl shaft and the bowl sleeve can be machined independently. The defect that an existing calendar bowl is prone to looseness is overcome. The surface of the bowl sleeve is coated with the rubber coating composite and the adhesion agent, so that the bowl sleeve has the advantages of being resistant to press, abrasion, aging caused by high temperature, aging caused by dampness and acid-base corrosion and is long in service life. A waste calendar can be reused. The degree of finish, the degree of flatness, the density and the like of paper can be improved, and the calendar bowl is suitable for producing high-grade paper.

Description

technical field [0001] The invention relates to the technical field of accessories for calenders used in the papermaking industry, in particular to a calender roll with a rubber-coated composite material and its processing technology. Background technique [0002] The main function of the papermaking calender is to properly improve the tightness of the paper sheet, and improve the smoothness, gloss and uniformity of the thickness of the paper. The calender is usually equipped with 3-10 calender rolls, which are vertically stacked on the frame. The selection of odd and even numbers of calender rolls depends on the paper threading method. The rollers pressed up and down by the calender are chilled cast iron rollers or chrome-plated rollers with extremely smooth surface, and the hardness is not less than 80-85°Shore. The calender must ensure that the roll surface is smooth, and the tolerance of roughness is not more than 0.5μm. The upper and lower rolls of the calender have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21G1/02C08L67/02C08L23/08C08L83/04C09J167/06
CPCC08L67/02C08L2201/08C08L2205/02C08L2205/035D21G1/02C08L23/0853C08L83/04C08L51/00C08L23/0869
Inventor 许云飞
Owner JIANGSU FOOD & PHARMA SCI COLLEGE
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