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Soft and hard co-extrusion one-step forming method of un-plasticized polyvinyl chloride (U-PVC) profiled material and PVC adhesive tape

A 1.U-PVC, soft-hard co-extrusion technology, applied in the field of U-PVC profiles, can solve the problems of loss of sealing performance, hardening and brittleness, and decline in sealing performance of doors and windows, to improve aging resistance and improve sealing , Reduce the effect of the post-wear process

Inactive Publication Date: 2013-08-14
NANJING JULONG SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the U-PVC profiled door and window soft rubber strips currently available in the market are generally made of nitrile rubber, ethylene propylene diene monomer (EPDM), thermoplastic elastomer (TPE), Polyurethane elastomer (PU), silicone rubber and other materials, the installation of the sealant strip is mostly through the post-passing process, and the sealant strip and the profile cannot be welded at the same time during the welding process of the profile, which affects the sealing performance of doors and windows
As time goes by, the use of its sealing strips often leads to hardening and brittle materials after being exposed to wind and sun. The sealing strips become hard and brittle due to aging, lose elasticity, and some even break and lose their seal. Performance, the sealing performance of doors and windows has dropped significantly, resulting in varying degrees of decline in wind pressure resistance, thermal insulation and other performance of doors and windows

Method used

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  • Soft and hard co-extrusion one-step forming method of un-plasticized polyvinyl chloride (U-PVC) profiled material and PVC adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add PVC (100 parts by mass), stearic acid (0.1 parts by mass), and industrial inorganic pigments (0.5 parts by mass) into the mixer and stir at a low speed of 350 rpm for 5 minutes to mix the materials evenly; Add diisononyl phthalate (60 parts by mass) and epoxidized soybean oil (2 parts by mass) to the atomizing device of the feeder, the adding process is a continuous and uninterrupted process, and the speed of the mixer is at 1000- Stir at a high speed of 2000 rpm until the hot mixing temperature of the mixer is 90-100°C; when the hot mixing temperature of the mixer is 90°C, add titanium dioxide (5 parts by mass), calcium carbonate (5 parts by mass number), tributyltin chloride (0.5 parts by mass) and barium cadmium zinc stabilizer (0.5 parts by mass), the speed of the mixer is 1000 r / min and high-speed stirring until the hot mixing temperature of the mixer is 120 °C, Open the discharge valve of the hot mixer and put the mixed material into the cold mixing unit for s...

Embodiment 2

[0028] Add PVC (100 parts by mass), stearic acid (0.2 parts by mass), and industrial inorganic pigments (0.6 parts by mass) into a mixer and stir at a low speed of 380 rpm for 6 minutes to mix the materials evenly; Add diisononyl phthalate (70 parts by mass) and epoxidized soybean oil (4 parts by mass) to the atomizing device of the feeder. The process of adding is a continuous and uninterrupted process, and the speed of the mixer is 1200 rpm Stir at a high speed per minute until the hot mixing temperature of the mixer is 92°C; when the hot mixing temperature of the mixer is 95°C, add titanium dioxide (7 parts by mass), calcium carbonate (7 parts by mass), di Thiocarbamate (0.8 parts by mass) and barium cadmium zinc stabilizer (0.8 parts by mass), the speed of the mixer is at 1200 rpm, and the high-speed stirring is carried out until the hot mixing temperature of the mixer is 125 °C, and the hot mixing is turned on. The unloading valve of the feeder puts the mixed material int...

Embodiment 3

[0032] Add PVC (100 parts by mass), stearic acid (0.3 parts by mass), and industrial inorganic pigments (0.9 parts by mass) into the mixer and stir at a low speed of 400 rpm for 8 minutes to mix the materials evenly; Diisononyl phthalate (85 parts by mass) and epoxidized soybean oil (6 parts by mass) were added to the atomizing device of the feeder. The adding process was a continuous and uninterrupted process, and the speed of the mixer was 1600 rpm Stir at a high speed per minute until the hot mixing temperature of the mixer is 96°C; when the hot mixing temperature of the mixer is 98°C, add titanium dioxide (8 parts by mass), calcium carbonate (9 parts by mass), di Thiocarbamate (1.1 parts by mass) and barium cadmium zinc stabilizer (1.0 parts by mass), the speed of the mixer is 1700 rpm and the high speed is stirred to the hot mixing temperature of the mixer at 130°C, and the hot mixing is turned on. The unloading valve of the feeder puts the mixed material into the cold mi...

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Abstract

The invention relates to a method of un-plasticized polyvinyl chloride (U-PVC) profiled materials, in particular to a soft and hard co-extrusion one-step forming method of a U-PVC profiled material and a PVC adhesive tape. After being cooled through a water tank, the U-PVC profiled material is assisted with one or a plurality of PVC soft adhesive tape production extruding devices, soft PVC adhesive tapes extruded at a U-PVC profiled material adhesive tape port and U-PVC sectional materials are completely bonded together through a hot air device, and extruding speed of the PVC soft adhesive tapes is adjusted according to extruding speed of the U-PVC sectional materials so as to achieve one-step forming of the sectional materials. An air cooling or water cooling device is added in order to avoid bending of the sectional materials caused by local heating of the U-PVC sectional materials and to ensure that bending degree of the U-PVC profiled materials can reach the standard. Implementation of the soft and hard co-extrusion one-step forming method of the U-PVC profiled material and the PVC adhesive tape reduces work load of assembly procedures during door and window processing, increases sealing performance of doors and windows, and improves heat insulation performance of the doors and the windows.

Description

technical field [0001] The invention relates to a method for U-PVC profiled material, in particular to a method for one-step molding of U-PVC profiled material and PVC rubber strips by soft and hard co-extrusion. Background technique [0002] At present, the U-PVC profiled door and window soft rubber strips currently available in the market are generally made of nitrile rubber, ethylene propylene diene monomer (EPDM), thermoplastic elastomer (TPE), polyurethane elastomer (PU), silicone rubber and other materials. Most of the installation of the strips is through the post-passing process, and the sealing strips and the profiles cannot be welded at the same time during the welding process of the profiles, which affects the sealing performance of doors and windows. With the passage of time, the use of the sealing strip often leads to the hardening and brittleness of the material after being exposed to the wind and the sun. The sealing strip is hardened and brittle due to aging,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/02C08K3/22C08K3/26C08K5/1515C08K5/12C08K5/57C08K5/39B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704B29C2948/92828B29C2948/92895B29C2948/92904
Inventor 郑生力刘跃建李王兵杜东东杨飞吴汾
Owner NANJING JULONG SCI&TECH CO LTD