A kind of preparation method of high-strength low-expansion PVC floor

A low-expansion, PVC resin powder technology, used in floors, buildings, building structures, etc., can solve the problems of limiting the application of chopped glass fibers, unavoidable precipitation of plasticizers, and gaps in paving, and achieve excellent tension. , Avoid the precipitation of plasticizer, improve the effect of straightness

Active Publication Date: 2022-06-14
浙江海利得地板有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These shortcomings greatly limit the application of chopped glass fiber in PVC flooring
[0007] 2. PVC floors are generally paved with ground sizing, but soft PVC floors contain a large amount of plasticizers, which are easy to separate out, destroy the glue layer and lose adhesion, and cause certain damage to the body after contact with the human body. The bottom layer of the floor on the market PVC film contains a large amount of plasticizer, and the precipitation of plasticizer is inevitable
[0008] 3. The PVC floor on the market has good flexibility, but the product with too low hardness is easy to be deformed by force, and the straightness is poor, which will cause gaps in the paving

Method used

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  • A kind of preparation method of high-strength low-expansion PVC floor
  • A kind of preparation method of high-strength low-expansion PVC floor
  • A kind of preparation method of high-strength low-expansion PVC floor

Examples

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Effect test

Embodiment 1

[0049] A preparation method of high-strength low-expansion PVC floor, comprising the following steps:

[0050] Step 1: Drawing of reinforcement layer

[0051] Mix 10% of PVC resin powder, 0.5% of stabilizer and 4% of plasticizer and stir for 3 minutes, then add 70% of calcium carbonate and 15.5% of modified chopped glass fiber, and stir at high speed for 8 minutes; put the mixed raw materials into Banbury mixer, banbury for 2 minutes, when the raw materials are formed into small pieces, they are discharged to the open-mixing equipment, and then rolled through four rolls, and then cooled, cut and drawn to obtain a reinforced material layer;

[0052] Step 2: Drawing of the base layer

[0053] Mix 10% modified PVC resin powder, 0.5% stabilizer and 10% plasticizer for 3 minutes, then add 79.5% calcium carbonate, and stir at high speed for 8 minutes; put the mixed raw materials into the internal mixer, and mix for 2 minutes, when the raw materials are formed into small pieces, th...

Embodiment 2

[0073] A preparation method of high-strength low-expansion PVC floor, comprising the following steps:

[0074] Step 1: Drawing of reinforcement layer

[0075] Mix and stir 15% of PVC resin powder, 1.0% of stabilizer and 12% of plasticizer for 5 minutes, then add 62% of calcium carbonate and 10% of modified chopped glass fiber, and stir at high speed for 10 minutes; put the mixed raw materials into Banbury mixer, banbury for 6 minutes, when the raw materials are formed into small pieces, the material is discharged to the open-mixing equipment, then rolled through four rolls, and then cooled, cut and drawn to obtain a reinforced material layer;

[0076] Step 2: Drawing of the base layer

[0077] Mix 15% modified PVC resin powder, 1.0% stabilizer and 12% plasticizer for 5 minutes, then add 72% calcium carbonate, and stir at high speed for 10 minutes; put the mixed raw materials into the mixer, and mix for 6 minutes, when the raw materials are formed into small pieces, they are ...

Embodiment 3

[0094] The difference between this embodiment and Embodiment 1 is only:

[0095] Step 1: Drawing of reinforcement layer

[0096] 10% of PVC resin powder, 1.0% of stabilizer and 7% of plasticizer were mixed and stirred for 4 minutes, and then 62% of calcium carbonate and 20% of modified chopped glass fibers were added.

[0097] The thickness of the TPU anti-slip film layer is 0.12 mm.

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Abstract

The invention discloses a preparation method of a high-strength low-expansion PVC floor, which comprises the following steps: step 1: drawing a strengthening material layer; step 2: drawing a bottom material layer; step 3: drawing a middle material layer; Step 4: Fitting, apply oil pressure to the wear-resistant layer, printing layer, middle material layer, reinforcement material layer, bottom material layer and TPU anti-slip film layer; Step 5: After oil pressure, keep healthy, and then surface the product UV and tempering; step 6: curing again; step 7: punching and chamfering the cured product to obtain the final product. The present invention modifies the chopped glass fiber so that the added amount of the chopped glass fiber reaches 10%, and the expansion rate of the product is as low as 0.05%. At the same time, calendering avoids off-roll, enabling continuous production, and at the same time makes the product warp Within 0.5mm, the hardness of the core material layer is increased from 40D to 50D, and the straightness is guaranteed to be within 0.10mm.

Description

technical field [0001] The invention belongs to the field of flooring, in particular to a preparation method of a high-strength low-expansion PVC floor. Background technique [0002] There are many defects in the PVC floor currently on the market. [0003] 1. The thermal expansion and cold contraction are large. At present, there are methods at home and abroad to reduce the expansion rate of the floor by adding grid glass fiber, surface-impregnated glass fiber mat and adding chopped glass fiber to the bottom material. [0004] The effect of grid glass fiber on reducing the expansion rate is limited, and the minimum expansion can only be reduced to 0.10%, and the grid glass fiber will also produce grid marks on the surface of the floor, affecting the appearance of the floor. [0005] The glass fiber mat dipped on the surface can effectively reduce the expansion, but it does not fit well with the PVC material layer. After a long time, delamination will occur, and the cost of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B9/06B29C43/24E04F15/10C08L27/06C08L9/06C08L9/00C08K9/10C08K7/14C08K3/26C08K3/36C08J5/08
CPCB29B9/06B29C43/003B29C43/24E04F15/107C08K3/26C08K3/36C08J5/08C08K2201/011C08J2327/06C08J2409/06C08J2409/00C08K9/10C08K7/14C08K2003/265C08L27/06
Inventor 徐济南贺斌声张成学徐承彦
Owner 浙江海利得地板有限公司
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