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Material for plastic twist-off cap, as well as preparation method and applications thereof

A plastic and polyolefin resin technology, applied in the field of materials for plastic twist-off caps and their preparation, can solve the problems of heavy odor, uncontrollable torque, and difficult opening, etc., and achieve the effects of low odor, stable torque, and avoiding the influence of flavor

Inactive Publication Date: 2014-10-29
HANGZHOU WAHAHA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The first object of the present invention is to provide a low-odor, easy-to-open, and easy-to-open plastic screw-off lid material that solves the problems of heavy odor, difficulty in opening, decomposition under normal temperature light, and uncontrollable torque in existing plastic twist-off cap materials. Twist-off cap material that is not easy to decompose under the action of light or oxygen, has controllable torque, and can be in direct contact with food and beverages

Method used

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  • Material for plastic twist-off cap, as well as preparation method and applications thereof
  • Material for plastic twist-off cap, as well as preparation method and applications thereof
  • Material for plastic twist-off cap, as well as preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of plastic unscrew cap material, under the ambient temperature of 20 ℃, take by weighing 10 kilograms of base resin high-density polyethylene, and according to proportioning 100: 0.01: 0.05: 0.1, take by weighing an appropriate amount of anti-oxidant of model 1010, The heat stabilizer zinc stearate and polydimethylsiloxane are mixed evenly in the mixer; then the mixture is put into the feeding port of the twin-screw extruder, and the preset melting temperature is 150 after the equipment is preheated ℃~170℃, melting pressure is 1MPa. After starting up, the mixed material enters the extruder, and after reaching a certain fluidity, the water in the cooling tank and the blast drying equipment are turned on; the strip-shaped melt at the exit of the die of the extruder is cooled in the cooling tank, and is pulled to the The granulator cuts and granulates, and the granulated particles are sent to the blast drying equipment for drying through the wind, and the dried part...

Embodiment 2

[0037]A kind of material for plastic unscrewable caps. At 22°C ambient temperature, weigh 10 kilograms of matrix resin polypropylene, and weigh an appropriate amount of antioxidants with models 1010 and 1076 according to the ratio of 100:0.5:0.5:5. The compound, heat stabilizer calcium stearate, and polydimethylsiloxane are mixed evenly in the mixer; then the mixture is put into the feeding port of the twin-screw extruder, and after the The melting temperature is 210°C-230°C, and the melting pressure is 1.5MPa. After starting up, the mixed material enters the extruder, and after reaching a certain fluidity, the water in the cooling tank and the blast drying equipment are turned on; the strip-shaped melt at the exit of the die of the extruder is cooled in the cooling tank, and is pulled to the The granulator cuts and granulates, and the granulated particles are sent to the blast drying equipment for drying through the wind, and the dried particles are screened by a vibrating si...

Embodiment 3

[0040] A material for plastic twist-off caps. At an ambient temperature of 18°C, weigh 10 kg of a mixture of base resin high-density polyethylene and polypropylene, and weigh an appropriate amount according to the ratio of 100:0.1:0.2:2. The model number is 1010 , 1076, 168 antioxidant compound, a mixture of heat stabilizer zinc stearate and calcium stearate, and polydimethylsiloxane are mixed uniformly in a mixer; then the mixture is put into a twin-screw extruder At the feeding port of the machine, after the equipment is preheated, the preset melting temperature is 180 ° C ~ 200 ° C, and the melting pressure is 2.5 MPa. After starting up, the mixed material enters the extruder, and after reaching a certain fluidity, the water in the cooling tank and the blast drying equipment are turned on; the strip-shaped melt at the exit of the die of the extruder is cooled in the cooling tank, and is pulled to the The granulator cuts and granulates, and the granulated particles are sent ...

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Abstract

The invention discloses a material for a plastic twist-off cap. The material is prepared by the following components: polyolefin resin, an antioxidant, a heat stabilizer, and a silicone slipping agent according to the proportion in parts by weight of 100 to (0.01-0.5) to (0.05-0.5) to (0.1-5), wherein the polyolefin resin is high-density polyethylene with melt flow index of 1-20g / 10min, or polypropylene with the melt flow index of 1-20g / 10min; the antioxidant is 1010,1076 or 168 monocomponent antioxidant or a compound thereof; the heat stabilizer is metallic stearate; the silicone slipping agent is polydimethylsiloxane with molecular weight of more than or equal to 10000. The invention further discloses a preparation method and applications of the material for the plastic twist-off cap. The material for the plastic twist-off cap can be separately used for producing twist-off caps or compounded with master batch to produce twist-off caps, the capped twist-off caps are easily unscrewed, the reduction range of the twisting-off moment is small along with prolonging of time, the smell is low, and the twist-off caps are applicable to the fields of packing of food, beverage and the like which are directly contacted.

Description

technical field [0001] The invention relates to the technical field of plastic production, in particular to a material for a plastic twist-off cap, a preparation method and application thereof. Background technique [0002] At present, for bottle cap shell materials suitable for plastic twist-off caps, polyolefin resins containing antioxidants and heat stabilizers are generally used to directly or indirectly mix amide slip agents to improve the difficult-to-open performance of bottle caps, such as adding mustard Unsaturated amides such as acid amide and oleic acid amide and / or saturated slip agents such as behenic acid amide or their compound. In order to ensure better opening performance after the bottle cap is sealed. However, this type of blended modified material has the following disadvantages: [0003] 1. The amide slip agent has peculiar smell, and there is a hidden danger of affecting the flavor of food or beverage when it is in direct contact with food or beverage...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L83/04B29B9/06
CPCC08L23/06B29B9/06C08L23/12C08L2205/03C08L2207/062
Inventor 赵允毛勇邓玉明张娟孙海滨范立英刘兆祎
Owner HANGZHOU WAHAHA TECH
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